Wednesday, July 31, 2019
Young Enterprise Is A Education Charity Education Essay
IntroductionYoung Enterprise is a instruction charity which delivers an thrilling, ready to hand, hand-on concern experience to immature people. The administration is locally run by voluntaries from the industry and instruction that form the Young Enterprise Boards. This faculty is a existent concern experience non a concern game. It ââ¬Ës been revealed through the Graduate Programme how a corporation maps. This experience provided an sole chance to construct information in all countries of concern with new accomplishments such as working as portion of a squad, leading, act uponing others, edifice relationship, concern planning, fiscal direction and control. Furthermore, taking duty for the actions done, client satisfaction and recognizing the demand for quality. We were divided into groups, the chief intent as a group is to put up a concern program, accomplish coherence and a sense of understanding amongst one another. By making this, it was hoped to achieve a sense of integrity and one which helped the squad to work together closely. This was done in a free province of head so that group members would non waver when desiring to province their sentiment. Less major group ends existed of developing support and trusting within the group of co-workers. Furthermore, deriving cognition and thoughts from other members. One of the first activities which was undertaken to make was to present ourselves to each other and give information about what major accomplishments we have. The procedure of this helped us to derive an penetration into the forces of the group and the features of different persons. Some of the other undertakings included us making new thoughts by promoting assurance, trust and synergism within the group. Furthermore, achieving a mark of deploying members right and encouraging finding within the group.Personal Development accomplishments and experienceThere are many cardinal accomplishments that this programme provided and gave me as come oning through it. Some of the accomplishments and experiences that I believe that I have obtained from making this Young Enterprise Graduate Programme are listed below: ââ¬â Team working consisted of taking portion in identifying and holding on the squad ââ¬Ës aims. Me as an single agreeing with each squad members undertakings and working efficaciously with others. I did this by back uping them to make the ends for the whole group. Problem work outing where jobs were being identified and analysed. Furthermore, taking solutions and implementing processs suitably. Communication had to be made by me and team members efficaciously to hold on aims and processs. I took portion in meetings, treatments and successfully interacting with clients and co-workers. Furthermore, bring forthing clear concise written work and presentations by utilizing appropriate and profession ICT techniques. Selling and Gross saless accomplishments were earned by making and transporting out a market research program. Then placing client mark groups and developing the appropriate selling attack. Furthermore, I choose the appropriate selling and gross revenues schemes to sell and administer to aim groups. Operationss accomplishments were achieved by keeping systems to run into quality criterions and measuring environmental impact. Besides puting up processs to run into operational marks and developing rating systems. The Finance experience was achieved by me when transporting out a fiscal audit and choosing schemes to better fiscal public presentation. I recorded fiscal information utilizing ICT every bit suitably as possible. Directing and Managing was developed by negociating with others and act uponing the results of the company. By pull offing a complex set of undertakings in an unsure environment and directing persons, squads or undertakings to accomplish agreed marks. Furthermore, pull offing co-workers, concern advisers, stakeholders, clients and constructing effectual relationships. Leadership was a hard accomplishment to accomplish for me because at times it was required to draw the company together in times of crisis and some co-workers did n't understand why. Furthermore, I encouraged co-workers to accomplish their full potency in the manner they contributed to the company ââ¬Ës overall public presentation. Learning was a accomplishment which was achieved throughout this programme from understanding cardinal larning penchants by prosecuting it in much more effectual ways. Furthermore, I improved my ability to larn from everyday of this programme experience. I have besides placing personal acquisition solutions and demands. I believe that throughout this twelvemonth my communicating accomplishments, concern thoughts and protocols were developed and strengthened. My experience was gained in working in a squad based civilization. This was like in a concern administration which involved planning, committedness, administration and flexibleness to accomplish consequences. First I disbelieved about the faculty importance to my degree class and was non precisely fascinated approximately working as portion of a squad. However I was incorrectly after the first twosome of hebdomads I got to cognize my squad members much more. I frequently wonder if I had n't taken the faculty, I would hold passed the chance of meeting and doing five new strong friends. Some issues which I had were to lodge up for others whenever there was an statement traveling to organize as I thought it would be better to screen it out by speaking non reasoning. As I started to develop my power and accomplishment to publish clear and brief instructions in a considerate mode during meetings and understanding our concern I believed we could go a successful concern. Belbin ââ¬Ës theory indicates to me that I am a ââ¬Å" company worker â⬠who is socially oriented, instead than mild sensitive with the ability to react to people and in any given state of affairs. Maslow ââ¬Ës hierarchy needs is a theory in psychological science that states people in life. Maslow identified ââ¬Å" A hierarchy needs as one degree becomes reasonably, or partially, pleased the net becomes stronger â⬠[ 1 ] Everybody in the group I got to cognize better and felt more comfy in the supportive environment one time settled down. Team members without fright were motivated as one of the elements of SCHEINIS larning civilization provinces larning to back up squad work, there must be a shared belief that co-operation will be necessary that it will work and besides shared belief that all people can and will larn fiting McGregor ââ¬Ës theory. [ 3 ] [ 5 ] Our wise man we met was called ââ¬ËMalcolm ââ¬Ë he had a concern and one of our group members gave him a call and we arranged a meeting with him. We got the SWOT analysis and thoughts down on what we are looking into to go a concern. After a few more meetings we were told that our wise man could non see us any longer as his concern was at hazard. I set myself a personal end and it was to promote all squad members and take portion in puting ends. Harmonizing to Locke ( 1968 ) ends affect motive [ 1 ] . Challenging but accomplishable ends motivates â⬠persons have basic demands or possible which, when displeased stimulates manners fixed towards fulfillment. I researched and studied as I was committed to larn and accomplishing high-quality Markss. ââ¬Å" Specific ends motivates extra than ill-defined â⬠known group roles as each group members had peculiar functions and responsibility. I developed my interpersonal and communicating accomplishments by e-mailing squad members over the Christmas vacations and complimenting them on the undertakings that all of had done before the vacations even though we had no wise man. Furthermore, we got an electronic mail sing us acquiring a new wise man from one of the Enterprise staff called ââ¬ËAndy ââ¬Ë . ââ¬Å" Contribution in puting ends is appealing â⬠each member of the group set an single end as to animate and remain on path. ââ¬Å" Significant consequences of earlier period piece is important to motive â⬠When Christmas passed we started to acquire our concern program ready for passing in on the 6th February 2010. We met with Andy and talked things through and what we have so far. It was noticed that we were really far behind through the faculty besides Andy tried to set up a new wise man for our group. If I was in control I would hold got the full group together and divided the parts that needed making together every bit. However as our group was in this meeting with Andy merely three of us were present, two were on their manner and 1 could n't do it. In this meeting the subdivisions were n't divided every bit and when asked who would wish to make certain parts some of the group members were n't at all interested. It eventually came to the decision that everyone had something to make except one member who had no undertaking but to assist other members get at that place undertakings done. Finally, the group held another meeting to inquire this member for aid to complete the undertakings off and manus in our concern study. We met our new wise man she was called ââ¬ËDebbie ââ¬Ë she helped us understand and cognize what was to be put into a concern study. Time was against us and we merely had less than a hebdomad left to complete the study. I feel one time once more that if the group was managed decently this would hold non happened at all. Luckily we got a hebdomad extension, even though this extension was set still some members were n't at all bothered. After passing in the study on the 15th February 2010 merely three members came to manus it in. Now we as a concern started to acquire prepared for the presentation. When speaking about presentations two of the members opted out. They did n't desire to show at all, I felt really angry and thought good this is what you have to accept in a concern. I experienced throughout this faculty the existent experiences and worst of being in a existent life concern. After practising and showing the presentation it was the twenty-four hours to show. The group and I were so amazed after presenting the presentation and besides we were able to answer to the whole inquiries from both the witnesss and the panel of Judgess. I felt our corporate attempt had paid away and was proud of our work. Our classs were given two hebdomads subsequently which was on the 17th March. I noticed that none of my squad members attended merely I did even though I was a few proceedingss tardily for the category. However, I was able to pick up the feedback. I gave the group a text message informing them of the consequences of past public presentations which motivated us all into making the following mission. Maslow theory encourages advice ; I learnt sing past success and can follow the manners once more. Plain rules of actions were received by all members of the group. When a member had a job, there was ever person to speak to and logic of togetherness ran throughout the group. First, the feeling was familiar, unagitated and this helped persons to province their sentiments without holding to concern about being judged by their members. Each member listened to each other and the struggle of thoughts was brought usefully into the unfastened. Decisions were normally reached by an understanding so that everybody or the bulk were pleased by the consequence. At this phase the group was more effectual and cohesive to a big extent. There was an of import growing in the behavior of persons and advancement. One issue which concerned us was when one member seemed to experience demoralized. This state of affairs was understood by the remainder of the group so it was discussed by hence deciding it sing that we had grown from a group of persons and into a group.In the close hereafterIt has been truly gratifying making this faculty as rather a batch of it was new. A batch of its qualities and utile accomplishments will be taken off from this faculty and class. As making this class it has given a strong base for the capableness to be able to work entirely. Furthermore, working as portion of a squad and besides holding gained superior contact accomplishments. After finishing this faculty I have become extremely motivated and have become a originative person. Furthermore, I am a gifted and active individual with necessary practical and theoretical formal cognition in Engineering. I am able to convey a record of teamwork and leading, and strong analytical accomplishments which will enable me to execute magnificently in the concern universe. I have refined my analytical, communicating and job resolution accomplishments both inside and outside the academic environment. My recent experience has taught me the importance of working with a item orientated attack and made me accustomed to bring forthing consequences while working under force per unit area. This faculty has helped fix me for interviews as the group presentation was 30 % of the faculty. Showing in forepart of audience and expecting designated inquiries. I will be utilizing this chance as a practise for a summer arrangement. From the group presentation I have gained, commercial consciousness, penetration of the field and self assurance. It helped in developing my accomplishments on package tools as I took the function of seting slides on PowerPoint. The construction and layout of presentation was formal accurate, elaborate and valuable. I surely could non hold done this wholly on my ain as an person. Boots The Chemist Company uses cross- functional squads to work on jobs stuck in the conventional administration. A endowment wins games, but teamwork and intelligence win title. The effectivity of squad work was surprising. I am more cognizant of consistence, truth meeting marks and deadlines in concern universe. I will wish to set all the accomplishments and cognition acquired into practise. When I complete my grade I am believing of traveling into the concern facet of telecommunication technology which is decidedly an option for me. I could work in gross revenues or in the selling sector. Am interested in making a postgraduate grade such as Masters in Business Administration ( MBA ) this will edify me more and I will hold the makings required. The work of ââ¬ËMcMclland ââ¬Ës acquired need theory ( 1985 ) ââ¬Ë proposed that some of import demands are non inherited but are learned. Team work is the cardinal component to success in a concern universe. Overall the Young Enterprise graduates programme has enabled me to be a end orientated single. It has given me a clear vision of future aims, ability to listen and use effectual communicating accomplishments. It helped me as an technology pupil to develop positive attitudes and accomplishments necessary for personal success, practical accomplishments, employability and womb-to-tomb acquisition. It encouraged me as an person in deriving an understanding the potency of future employer besides sing self-employment and concern creative activity as possible future calling options. I am good at making invention solution to accomplish ends. There is a great trade of accent on ego directed acquisition in the faculty. This faculty has been a great experience as I have enjoyed the undertakings developed accomplishments for the universe of work.
LIfe Goals Essay
I left college for a year to come back home and work. At the time that I left school I didnââ¬â¢t think that it was for me. I was working my butt off at school every day with no reward. At times I felt as if it was all for nothing. I didnââ¬â¢t have a job, I needed money and I stayed stressed out and bogged down with all different types of coursework. I just felt that my talents and effort could be put to better use elsewhere. I felt that if I dropped out and became employed full time that that situation would better suit me. However, after having had taken the working manââ¬â¢s route and still barely making ends meet I feel like I made an irrational decision by leaving college. I also found out that a college graduate has the potential to make up to a million more dollars in their lifetime as opposed to those with only a high school diploma. That tiny bit of information was enough to change my mind and lead me towards wanting to get back into school. I made a hasty decision in leaving school in the first place. I was more concerned about my current living situation instead of being focused on long term goals and how successful I wanted to be later on in life. I guess I can say that I had a little growing up to do. Now I can confidently say that Iââ¬â¢m more focused than Iââ¬â¢ve ever been in my entire life and that nothing will hinder me from becoming successful.
Tuesday, July 30, 2019
A study of the psychology of belief with reference to the influence of Freud
For many people, religion has been a pillar of our society for as long as we can trace back. A psychologist however, would argue that religion developed from the day that the people of our society started questioning their existence. As Sigmund Freud, physiologist, doctor, psychologist and the father of psychoanalysis, is generally recognised as one of the most influential and authoritative thinkers of the twentieth century, we need to consider his analysis of religion when approaching this topic. However as some of Freud's theories were developed over a century ago is it really possible to apply them to our society today, especially as our society is so multicultural and faith still holds a key role within many people's lives? According to Sigmund Freud religion is an ââ¬Å"illusionâ⬠we as a society or as individuals, conjure up for ourselves, for a number of key reasons. The first and most essential reason Freud claims we turn to religion is as a way of expressing psychological anguish from our childhood. The second is we turn to religion as a way of overcoming and preventing dangers from the natural world, in hoping to gain control ââ¬Å"the necessity of defending oneself against the crushingly superior force of nature. â⬠The third is that religion is used as a stress relief, stress that has developed from living in a suppressive society that condones the expression of sexual desire. A final key reason Freud developed is that we follow religion to prevent the feeling of helplessness we can get when we no longer have the protection of our parents or guardians: ââ¬Å"And thus a store of ideas is created, born from man's need to make his helplessness tolerable and built up from the memories of the helplessness of his own childhood and the childhood of the human raceâ⬠I shall address Freud's key idea to begin with: religion is a way of expressing psychological anguish. All of Freud's work is focused around the idea of our unconscious or our subconscious. Freud claimed that as children, any emotional torment we may suffer, instead of dealing with it directly at the time, we suppress it in our unconscious mind, only to channel it into another outlet later in life as an obsession or repulsion of any particular aspect of life. This is referred to as sublimation. One of the ways in which a person may choose to ââ¬Å"channelâ⬠their negative experiences is through religion. This link was brought to Freud's attention as he began to notice similarities in his patients' obsessions in relation to the source of their compulsive behaviour as to that of a religious person and their faith. Both have a symbolic meaning to the follower and have a set ritual ââ¬â failure to complete this ritual (however regular it may be) leads to guilty feelings of regret. Seeing this comparison Freud came to the conclusion that religion is another form of neurotic illness that stems from our unconscious. Freud then began to address the matter of what suppressed feelings from childhood actually were. It is through this thinking he developed the concept of the ââ¬Å"Oedipus Complex ââ¬Å". This suggests that as children, young boys hold loving feelings of a sexual nature for their mothers. Through this they develop feelings of envy and hatred for their fathers. Due to the society we live in the Oedipus complex has to be suppressed as it is not acceptable behaviour but the sexual urges, Freud claims, are still there. It is these urges that are pushed to our unconscious that later come out in obsession or infatuation with something ââ¬â obviously in this case ââ¬â religion. ââ¬Å"Thus religion would be a universal obsessive neurosis of humankind. Just like the obsessive neurosis in children it springs from the Oedipus complex, the relationship with the Fatherâ⬠As mentioned before Freud made a direct link between psychological anguish and guilt and religion and guilt. Freud put forward a process that humans use to channel their guilt, particularly that of a sexual nature from the Oedipus/Electra complex. In an attempt to rid themselves of these feelings of guilt the person develops idols or Gods. By doing this they feel they can repent for their guilt by worship or sacrifice to these idols. Initially the idol may be a representation of the child's Father yet later on, in the same way the Father is rejected through Oedipus, the God is changed to an animal of a primal sort. The animal becomes sacred and inflicting harm upon the animal becomes a sin. Sacrifices are made to and worship becomes a ritual. This first stage of sublimation Freud labelled as animism. The second stage is, however, called religion. During this stage, the animal develops the status of a God and once again takes the form of the father figure thus completing the cycle from Oedipus to religion. As Freud said ââ¬Å"I put forward a suggestion that mankind as a whole may have acquired its sense of guilt of its history, in connection with the Oedipus complexâ⬠Closely linked to this is the theory that religion is used as a ââ¬Å"stressâ⬠relief, stress that is placed on us by the society we live in. The stress that is caused by the suppression of our natural urges as children. This stress forces us to channel our libido into other areas of thinking and working, areas in life that are more socially acceptable. As I explained previously it is common for this area to be religion and worship. Freud's second theory for religion is that we use religion as a way of protecting ourselves or overcoming fears from the natural world. The problem of evil and suffering and religion has long being a conflict for many philosophers and psychologists. It is through this conflict that ââ¬Å"St. Augustine's Theodicyâ⬠was developed. St. Augustine based his arguments on the Bible and his theodicy suggests that God is perfect and created the world perfectly. Created things are susceptible to change and evil comes from angels and human beings that chose to turn away from God. Augustine concluded that God cannot be blamed for creating evil since evil is not a substance rather than a deprivation (a lack of good) and it is not logical to say God created that deprivation. Despite this theory and many others that have been presented to us since the problem of evil and suffering is what gives science a higher appeal than religion to many people living today but it is also, according to Freud why we invent religion in the first place. Religion offers us a ââ¬Å"rewardâ⬠for any suffering we may have inflicted upon us during our lifetime and adds meaning to life and its purpose. Otherwise we would be suffering unnecessarily and there would be no point to continue with life. Also through prayer and worship we feel we can control naturally occurring events that can cause us suffering such as death, illness, natural disasters etc. We do this in an attempt to abolish our fears of things we cannot control or change and hope to have some power over them through religion. Freud's next point is not dissimilar to the ideas of Karl Marx. Marxists would claim that religion is encouraged by the state to enforce order in society. Freud suggested a purpose for religion is that it is developed to give us a reason to obey authority. Regardless whether it is state authority or religious authority according to Freud people develop an attitude that ââ¬Å"Everything in our world is an expression of the intentions of intelligence superior to us, which in the end, though its ways and byways are difficult to follow, orders everything for the best. We feel that if we disobey we shall not be rewarded, or worse punished for our crime or sin and we, by consequence, do not disobey. Freud came to the conclusion that religion must be overthrown for society to develop and progress. A final key reason Freud presents for humans fabricating religion is to prevent the feeling of helplessness we can get when we no longer have the protection of our parents or our guardians. This is simply that we develop ââ¬Å"Godsâ⬠in order to protect ourselves, so we have someone to care for us and someone to look up to in the same way that we as children looked up to our parents. When Freud's theories were first published they were considered deeply controversial, interestingly though people took interest in what he said and took his psychoanalytical theory very seriously because at the time science was starting to make it's breakthrough and Freud's explanations were fresh and appealing to many. However whether theories that were developed over a century ago can still be relevant today is a different consideration. For Freud's work to still be relevant today, when science has developed further than psychology, which in comparison is considered the ââ¬Å"soft science,â⬠there would have to be some evidence to support the basics of Freud's theory. Freud based his ââ¬Å"Oedipus Complexâ⬠on the ideas of Darwinism, a stage of life in prehistoric men when the family unit was the ââ¬Å"primal hordeâ⬠. It consisted of a mother a father and offspring. As the dominant male the father would scare off any male threat to the female. This continued until all the male offspring joined together and turned on the father and eventually killed him. The idea of religion stemming from guilt is not such a controversial one, particularly linking to sexual guilt and religion. Religious figures have often condemned sexual activity for the use of anything other than reproduction. Figures such as St. Augustine (who was greatly influenced by Plato) viewed sex and sexual desire as ââ¬Å"having been implanted by the Devil at the time of the fallâ⬠as Peter Vardy explains Augustine claimed that it was best to avoid all sexual activity even within wedlock. If the situation should occur when sex was needed for reproduction then the man ââ¬Å"should descend to his task with a certain regret. â⬠Peter Vardy also outlines the common Catholic teaching which even today, in what we like to consider a sexually liberated society is still very traditional in it's approach, namely: ââ¬â ââ¬â Masturbation is sinful since this means using genitalia for a purpose for which they are not intended ââ¬â Sex can never have pleasure or the expression of love as its main object since, again, this means using genitalia for a purpose for which they were not intended Homosexuality, if it is practised, is deeply sinful as this means using genitalia for a purpose for which they were not intended since procreation cannot result and it is ââ¬Å"against natureâ⬠So considering people are still raised to believe sex for any other reason other than reproduction is sinful, it is easy to see why sexual feelings may lead to feelings of guilt. Particularly as sexual feelings are present throughout all stages of childhood that Freud identifies in the following ways: from birth to the age of eighteen months the child goes through what Freud named the ââ¬Å"Oral Stage. This is to say all gratification of learning is gained through the mouth (feeding, chewing, sucking fingers etc. ) From eighteen months to three years the child progresses into the ââ¬Å"Anal Stageâ⬠this normally happens when the child goes through potty training and often as a result develops fascination in anus and faeces. The period of time between three and six years of age was coined as the ââ¬Å"Phallic Stageâ⬠and it's during this stage that the child develops features of the Oedipus complex (if male) or the Electra complex (if female). After the initial rush of feelings from the phallic stage have passed the child falls into the ââ¬Å"Latent Stageâ⬠during which Freud claims there is no sexual development but this could be due to a suppression of the sexual feelings from the ââ¬Å"Phallic stage. â⬠The final stage of childhood according to Freud is the ââ¬Å"Genital Stageâ⬠and depending on how the child's feelings from their younger years were dealt with, this is the time when sexual desire develops and is explored deeper. So if a child is raised to deny themselves the sexual feelings their body releases then they may begin to feel sinful or guilty for having these feelings in the first place. Therefore for Freud to find a link between sex, guilt and religion is not entirely controversial. This all acts as evidence towards Freud's theories and the relevance they hold in our society today. However, that said, there is plenty of reason why Freud's theories are not at all relevant to us in such a developed society. Freud has been criticised for focusing on the link between a father figure and a ââ¬Å"Godâ⬠in religions such as Judaism and, of course, Christianity. He fails to address eastern cultures and religions, which are based on worship of female idols or Goddesses,â⬠such as the Egyptian Isis cult and Buddhism who have no one single object of worship. One of Freud's major critics, Bronislaw Malinowski, who went on to write a book called ââ¬Å"Sex and Repressionâ⬠disputed Freud's theory that religion develops from sexual guilt caused from the Oedipus complex. He points out for Oedipus to be a complex it needs to be universal. You cannot apply a complex such as Oedipus to matriarchal tribes in which the male is not dominant and takes the role of a nurse. Malinowski also brings to our attention the lack of evidence for ââ¬Å"Oedipusâ⬠within the animal kingdom, as Darwinism only applies to early mankind. Also there is less evidence of ââ¬Å"Oedipusâ⬠leading to religion in our society today as it is becoming increasingly secular and fewer people are turning to religion. This could suggest that the Oedipus complex does not occur, or if it does it does not have a link to religion. It is more likely, however, that all children still do go through the Oedipus complex but as our society is more sexually liberated people are allowed to express sexual desire in other ways rather than it becoming sublimated and channelled into religion. Another key criticism of the ââ¬Å"Oedipus Complexâ⬠is the suggestion that religion is a cause of the complex rather than a result of it. If it was not for religion then, it is possible, these sexual urges would not have been suppressed at an early stage and a complex would not begin to develop. It could be just a possible that a child was made to feel guilty about the loving feelings towards his Mother and as a consequence developed a complex (Oedipus. ) Rather than the ââ¬Å"Oedipus Complexâ⬠leading to religion. Another more general criticism is that even if religion is a cause or result of guilt, or fear it still works as a ââ¬Å"Bufferâ⬠between the soul and reality. It is essential to society, as, music, art or literature as it is an expression of self and belief. Therefore it is not sound to suggest, as Freud did that religion must be overthrown. â⬠Donald Winnicott essentially presented this criticism of Freud's work but is the popular feeling of many today. Psychology self ââ¬â help book ââ¬Å"Love is the Answerâ⬠presents the argument that some none ââ¬â religious responses to misfortune of frustration e. g. Cynicism has actually been shown to be bad for physical health. So a ââ¬Å"religiousâ⬠view (of forgiving and repenting) might actually be health giving to us, and to dismiss it from our society would be to dismiss this positive outlook on life. So Freud's theory may have been apt for his society, a society built on religious structure, and some of his points may appear to justify the behaviour of people today. But I feel that in the twenty-first century when we are all encouraged to express our beliefs, ideas, sexuality and ââ¬Å"bare our soulsâ⬠, a theory based on suppression (even if it is unconscious) seems radical. I think religion itself has become more liberal and has resulted in many ââ¬Å"branchesâ⬠of Christianity all with a different strand of tradition. Some ââ¬Å"branchesâ⬠base their morals on the word of the Bible where as others feel that we have to ââ¬Å"updateâ⬠the word of God and adapt it to how we live today. To apply a theory from a century ago is to digress, in the same way technology has evolved, and our knowledge of our universe and surroundings have developed, we have to advance spiritually. We have to question what we already know, even if this means abandoning Freud's theories and all its implications.
Monday, July 29, 2019
Summary of Genesis 27-45 Essay Example | Topics and Well Written Essays - 250 words
Summary of Genesis 27-45 - Essay Example The passage generates two major phenomenon; irony and radical reversals. Irony is seen when characters are extremely deceptive and end up earning privilege rather than punishment. For instance, Jacob deceives his father, Laban to Joseph and Rachel to Jacobsââ¬â¢s family. Irony and radical reversal too is evident when Jacob the lastborn is blessed instead of Esau the firstborn as it is the tradition. Esau receives lesser blessing in addition to being excluded from the covenant forever. This passage is important as it shows humanity that choices have consequences. Esau lost his inheritance for choosing a bowl of soup; Rachel suffered for hiding the idols and Jacobs brother suffered for selling in Egypt. This passage reveals world division by way of binary opposites, initiated at the creation story. Just like male opposes female as per the creation story, Jacob and Esau are absolutely different in everything right from their occupations, behaviour and appearances. Another pair of binary opposites is Rachel and Leah both struggling for Jacobs affections. Oppositions are also seen in intangible elements like the match between man and God, contrast between famine and abundance. This passage is important as it shows the Gods way of working with humanity. It shows how God creates realms of contrasting reversals, symbols, and forces to suggest through whom and how His covenant is to be
Sunday, July 28, 2019
Role of Unions and Human Relations Management Personnel Research Paper
Role of Unions and Human Relations Management Personnel - Research Paper Example This disadvantage results from the strikes which are undertaken by the labor unions for different reasons at different intervals. The decisions to go on a strike, for the acquiring of improved working environment or wages, involves many such social and professional factors which can be a big harm to the performance of the organization and employees. Moreover, the creativity, achievements and good performance of workers is not rewarded. Due to the strikes and labor union activities, the underachievers are also paid for their services same as the high performers. The union workers are normally hard to be fired, so they decrease the productivity as well as the profit potential of the organization. One of the other factors is that these unions make the individual employees lose their freedom of speech and the strength of voice in the organization (Baccaro, 2008). The human resources management personnel are the major people to be playing the contributing role in binding the people of the organization together. They organize various activities through which the people in the workforce of the company come together and work with each other. Through this process, they come to know about each other in a better manner. When the new employees are inducted into the organization, they are welcomed and are made to know the other people of the company by the human resource management officer. All the breaks, free time and leisure is managed by the HR relations officer and the productive relations, proper association and communication of colleagues with each other are assured by them in a better manner. The employee relation s manager plays the role of a link or a connection between the management and the employees within the organization. He is even responsible to collect the information of the labor unions to assist its activities and collective bargaining roles. He also makes the employees
Saturday, July 27, 2019
Rainwater Harvesting Essay Example | Topics and Well Written Essays - 250 words
Rainwater Harvesting - Essay Example Furthermore, the tanks have a 15-year warranty and use up-to-date technology to ensure the water is safe for human consumption (JFC n.p.). The availability of different sizes makes the system ideal for areas without water security. The installation process is cost efficient as the tank can be backfilled with pea-gravel instead of backfill. Furthermore, the assembling of the tank can take place on-site, and the assembly instructions provided eliminating the costs of hiring a crane. The Stormsaver provides high-quality rain harvesting systems at competitive prices. It provides its services for domestic and commercial use. Testimonials from users of the system argue that the installation has halved their water bill, and the installation budget is small. According to John Thorne, the Stormsaver System cost à £2,500 and an extra à £5,000 to install (Stormsaver n.p.). The plant reduces domestic consumption as the water covers toilet flushing and sprinkler systems. Furthermore, the company offers free servicing, maintenance and installation, reducing the cost of purchase and
Friday, July 26, 2019
Learning to Manage Essay Example | Topics and Well Written Essays - 2000 words
Learning to Manage - Essay Example Therefore, I must be able to manage myself if I want to manage others. In order to be an effect manager and leader one must be able to influence others to willingly do things with quality and standard that is above average and above the norm. A good manager is one who sets the example for others. He or she must be do what he or she expects of others and be able to do it even better and more willingly. An effective manager is both a follower and a leader and he or she should be able to direct the behaviour of his or her staff in order to accomplish the objectives of the company or business. The roles of a good manager also include helping people to be committed to achieving organizational goals and encouraging constructive change that is necessary. and knowledge. By creatively organizing, leading, and managing a good manager can match an individual's assets with the jobs and responsibilities. Then it is possible to help individuals work as a team. There are many different learning styles. Some individuals learn better by receiving information verbally. Others learn by incorporating motor skills and yet using intellectual skills work best with various individuals. Gagne (n.d.) suggests, "five major categories of learning: verbal information, intellectual skills, cognitive strategies, motor skills and attitudes. Different internal and external conditions are necessary for each type of learning." People also learn better by doing and by participating actively in the learning process. Interactive learning keeps the students, or learners, involved as this type learning involves interactions, either with other staff members, students, employers, teachers, the environment, or the learning materialInteractive learning offers involvement." There are many theories about learning. Learning theories suggest that learning is a process. There are various theories. One theory is the stimulus-response model. This is the behavourist orientation to learning. This theory states that behaviour is observable, learned by a change in behaviour, and is shaped by the environment that surrounds individuals. In other words, this theory suggests that external factors such as environmental elements determine what individuals learn Learning to Manage 4 instead of individual learning. Another learning theory is the cognitive orientation to learning. This focuses on the mental procedure, or the act/process of knowing, of learning. People who support this theory believe that learning comes from expectations, connotation, and the making of different connections. Thoughts and perceptions are viewed as a whole or a pattern instead of individual images. Individuals use knowledge and information that was gained
A Global Perspective of Contemporary Health Research Paper
A Global Perspective of Contemporary Health - Research Paper Example There is an account on coronary heart ailment amid fifty thousand civic sector workers in Finland. They established the anticipated connection amid physical indolence, stoutness, and pervasiveness of coronary heart ailment. A grassroots occasion in 2007 was held in which approximately 20 million inhabitants affirmed war on land pollution, air and water. Primary support disproportionately emerged from youthful, liberal, and largely knowledgeable Whites who were not Hispanic. The inhabitants were pleased with the development of the United States Environmental Protection Agency (EPA) and consent of the National Environmental Policy Act (NEPA) and approximately twelve subsequent rules that guaranteed to manage discharges from industries, vehicles and power plants (Weiner, 62). These measures were to guard the health of employees. The consequences of these strategies comprised of the decline of releases into water sources and the air coming from sewage management systems, industries, power-production station, vehicles, and management of a number of the countrys nastiest dangerous waste sites. After the carnival of the opening Earth Day, the government administration and the citizens of America are now centering on war, terror campaign and the economy as opposed to protection of the environment. The Earth Day event is a Global event and in some countries, it is a vital holiday. The primary promoters of environmental protectors consist of a vast assortment of age clusters, political viewpoints, racial clusters and socioeconomic clusters than 30 years ago. What the community deems as environmental protection has extended and the machinery employed to devise strategy have tailored to these modern challenges. A number of papers have been drafted to commemorate the extension of environmental problems and tools. The NEPA, which authorized environmental effect declarations, was among the pioneer vital parts of federal environmental
Thursday, July 25, 2019
Law Enforcement and Policing- (Deputy Sheriff) Essay
Law Enforcement and Policing- (Deputy Sheriff) - Essay Example The sheriff is the head of the department-wide authority. Different ranks have the scope of authority in a given county for analysis purpose we shall take an example of Montgomery county in Tennessee. Here we find that the sheriff is the department-wide authority with an insignia having five gold stars arranged in a pentagon, second in command is the chief deputy sheriff with a badge having four gold stars arranged in a line the chief deputy sheriff is responsible with department-wide jurisdiction with the authority to act in the stead of the sheriff. The captain is third in command where he acts as a division commander his badge is a double gold bars. The lieutenant is forth in command whom is the section commander and carries a insignia with a single gold bar (Inwald, 1988). The sergeant is the fifth in command who his responsibility is the unit or the shift commander for identification he has 3 chevrons. Next to him the investigator is basically called school resource officer, their responsibilities are to provide direction for deputies at crime scenes there is no way of identifying them since they do not wear any insignia. The corporal is responsible for field training officer for patrol shift supervisor or detection division, the corporal wears 2 chevrons with FTO notation for patrol. lastly in the basic organizational structure is the deputy sheriff who is the only one whose badge is silver as opposed to others who have a gold badge in color, he has no insignia (Inwald, 1991). The sheriff has is important in every county due to the functions that he is responsible for within the county, the sheriff is the chief law enforcement officer who is charged with the responsibility of policing the county and keeping the peace, he has the power to make arrests and administration of jail and custody of the inmates. The sheriff also serves as the treasurer of the county and is responsible for collecting all taxes which are levied by the
Wednesday, July 24, 2019
A comparison of wine cultures between United Kingdom and Hong Kong Literature review
A comparison of wine cultures between United Kingdom and Hong Kong citizens - Literature review Example They further stated that the production of food and wine is a global phenomenon. Varriano (2011) added that wine had manifested its uniqueness in the culture and history of food and drink that first started in the ancient Greece and Rome civilizations. It is further essential to almost all forms of religion as they use this in their worship (Deutsch and Saks 2008). Today, the wine industry is rapidly growing along with the rise of the globalization (Anderson & Nelgen 2008). Indeed, wine has played a significant role in the lives of wine consumerââ¬â¢s way back in the past and up to the present. According to the work of Estreicher (2004), wine has played an essential role in the foundation of Western civilization. He further added that wine is a magical special ancient alcoholic beverage due to its associations with gods and religious and spiritual traditions. Sanchez (2008) further added that wine is considered by the ancient people such as the Greeks, Romans, Cretans and Egyptian as their daily commodities dated before Christ. These people are used to conducting grape brewing in their respective households. In the ancient history of the invention of distillation, wine is considered to be the best and most effective antiseptic. Furthermore, it is also considered as one of the most in-demand commodities for trade in the early Western civilization along with vine. Therefore, wine can be cited as a very significant in terms of religion, medicine, and trade (Estreicher 2004). Such notions and claims are further supported by the article of Squicciarini and Swinnen (2010) as the authors had revealed that, even back in the old times, wine has been used by the ancient people in several ways and within different purposes. For instance, in China, Chinese folks are using wines for spiritual purposes. This is also the same with the Indian people in which they used wines for
Tuesday, July 23, 2019
Service Quality RTE Essay Example | Topics and Well Written Essays - 3000 words
Service Quality RTE - Essay Example The service marketing mix includes process, physical evidence, and people. When offering services instead of products, a company's reputation, the process of delivering the service and what is promised, value for the money, and follow up. Other differences include the improbability of services not being able to be returned and a company's service can be based on one particular sales representative. Council (2006) which states "The relationship between the audience and the broadcaster can be very uneven yet good communications between the two are vital for the ongoing development of a truly relevant service. RT is committed to being open to its audience, welcoming all contact, listening to all views, and responding promptly and appropriately. To facilitate communication and to enhance accountability" In order to provide quality services via services marketing, RTE must be aware of key macro economic environmental factors such as the climate in which the company conducts business. Regulations and policies set by the government. The economic environment includes the business cycle, rate of inflation, and interest rates. The changes in society's trends and markets and technological impact are also macro economic environmental factors. A Political, Economic, Socialcultural, and Technological Analysis (P.E.S.T. or PEST Analysis) is used to examine the macro (external) environment that companies must face and deal with when conducting business. External factors can be considered bad and yet a dynamic external environment creates opportunities as changes occur. Macro economic environmental factors are forces which affect companies dramatically if not controlled and addressed accordingly. The macro factors are dynamic and produce major changes and trends. Such factors include technology, politics, the status of the economy, and the Last Name 3 environment. As stated earlier, these factors (along with many other macro economic environmental factors) drive the changes that constantly occur. Demographics, or "The characteristics of human populations and population segments, especially when used to identify consumer markets", as defined by The American Heritage Dictionary of the English Language (2000) are highly determined. Unlike demographics, however, the macro environmental factor of public opinion is very uncertain. RTE should focus on the factors that are the most important and most uncertain. The company should focus on trends that are observable and measurable as these are good indicators of what changes should expect to happen and the directions in which these changes will take. RTE has an advantage in keeping abreast of the macro environmental factors as the media services (television, radio, business, news,
Monday, July 22, 2019
Internship in Nevada Restaurants Association Essay Example for Free
Internship in Nevada Restaurants Association Essay Having a successful career after studying is one of the aspirations of many college students. However, facing a real scenario in a corporate world seems to be very challenging and for some, it can be frightening. That is why internship programs are included in college courses to show the real world associated with the profession to the students and to prepare them by requiring them to work in a company of their choice. For my case, I took internship at Nevada Restaurant Association, an organization that focuses on managing various events and activities associated with hotel and restaurant management. As an HRM institution, Nevada Restaurant Organization has a goal of rendering world class hotel and restaurant services to valued customers. For them, customer satisfaction is very important because it measures the level of their performance. To accomplish their goals, NRA exhibits various ways of rendering high quality hotel services, safety food provision and high standard accommodation. The most important thing about NRA is that they recruit members in their organization for the goal of helping others and sharing their knowledge with them. Seminars, trainings and exhibits are done in a regular basis to continuously help aspirants and hone them into globally competitive HRM professionals (NRA 1). Since I am still an intern student and my knowledge about the industry is still limited, the management gave me basic tasks in the organization. As an intern, my basic tasks are to assist the events team in managing events and seminars like high school cooking competition, food preparation seminars and other activities related to hotel and restaurant management. I also do administrative works like preparation of seminar kits, modules and other things needed for the events. Most of the time, I assist the director of the organization in conference room meetings by means of preparing the room and the materials needed by the director and the participants. Even though my tasks are basic, for me they are very challenging because it tests not only my knowledge about my career but also my behavior towards work and other people. I can say that by being an intern in Nevada Restaurant Association, I am able to apply what I have learned from my subjects and learn new things at the same time. As a hospitality management major, my everyday tasks and interaction with my coworkers and a lot people outside the organization enhanced my skills and made me appreciate my profession more than how I appreciated it when I am still starting my course. As an example, the things that I have learned in my Facilities Management, Marketing and Finance subjects helped me in effectively preparing and organizing events and seminars. By assisting the team in using the available resources in an optimal way, I was able to help the entire organization in attaining cost effective processes that aided them in rendering high class services to participants. On the other hand, my knowledge in Service Management and Career Development subjects aided me in dealing with the people in the organization and with the participants in all the events that I have organized and attended. I know that it is through effective communication and respective approach that I will be able to apply my hospitality skills in my career. Among all the subjects that I have taken, it is Service Management that aided a lot n preparing me for my career. It is because I believe that a large part of Hospitality Management deals more on the services rendered. It is on how the services are organized and implemented that customer satisfaction is garnered. The food, drinks and other visual products of the service only serve as tangible proofs but beyond that, it is the kind of service that make people say that ââ¬Å"it has a global qualityâ⬠. Thus, it is very important that the skills and potentials required for rendering service is developed and enhanced. During the internship, I treated my managers and my coworkers as my customers and as a service provider, I did my best and used my skills and talents in rendering services that will give them utmost satisfaction. That is by obeying instructions, by doing tasks the right way and the way they wanted it and by completing requested works on or even ahead of time. In that way, I was able to practice how to render high quality services to other people. When I entered Nevada Restaurant Association as an intern, the management had an agreement that I will be spending 200 hours working in the organization. We also agreed that no amount will be paid for the internship and I will be working in the company until I completed the 200 hours. Perhaps for some people, 200 hours of work maybe hard especially to those who have no interest in their job. Yet, for me, 200 hours work seemed to be not enough. It is because for me, there is a lot to learn about the company and I, as a very aspiring person want to learn all the things that I can learn about the company. For me, it is the learning and the experiences that encouraged me to have enough strength to work on my tasks and be utmost motivated to prepare myself for my profession. In my own point of view, working in Nevada Restaurant Association is a big challenge for me. First of all, it is my first time to work with professional people and second, it is also my first time to apply the skills that I have learned in school in the real world. I admit that I felt the pressure of my work. There are times during my first days in work that I doubted if my work is good enough to satisfy them and if it will meet the standards set by my managers. Like any other person, I do not want, as much as possible, to fail in my work and receive negative feedbacks from my managers. It is true that at first, I thought that my job is difficult but I realized, as days went by that what I was doing was fun. I realized that the pressure is just there because it is my first time. Later on as my work get clearer and clearer for me, I realized that I am blessed because I was given the opportunity to work in a prestigious organization. In my entire stay in the company, I felt the enjoyment and fun of working with various people, meeting new acquaintances and establishing new contacts. Most of all, I learned one of the most important lessons, that failure is a key to success. As a fresh intern, I admit that I also made some mistakes in my work and my managers usually pointed it out. Though it is sometimes frustrating especially if I have already exerted too much effort to finish the job, I realized that it is my failures in my work that pushed me to do better and be more deserving for my profession. I realized that if I really want to learn, I should learn to be patient enough to continuously try my best to make my work better. Mistakes are not there to discourage me but they are there to direct me to my potential improvements. I learned that as a person full of aspirations, I should not focus on my mistakes and instead, I should focus on what my managers are telling me because they are the ones who know better than I do and they can direct me to my improvement. By keeping that in my mind, I was able to make my tasks a lot easier, fun, and enjoyable. The pressure that I felt during my first days disappeared as I learned to love my job and seek learning from it. I think that it is my positive outlook in life that I am able to transform the pressure into motivation and burning aspiration to finish my intern and keep what I have learned until the time that I need to apply it again. In addition, the organizationââ¬â¢s culture taught me important things that helped me to be a better person. First of all, I learned to be a competitive person in a creative way that showcased my talents and abilities. Since the organization aimed for producing skillful, world class and competitive students and trainees, I, as an intern has adopted this behavior and I was able to apply it in my everyday life. For me, this behavior is very essential because I believe that when I enter the real world after graduating from college, I will be facing a lot of people who may have the same skills that I have and in order for me to get accepted, I must stand out from the rest by being competitive in the best that I can be. In accordance with the culture of the company, I also experience a lot of good things in the company. Even though I am just an intern, my coworkers did not treat me as one and in fact, they treated me as their coworker already. They have shown me the appropriate respect, encouragement and motivation. Although authority is there, their attitude of being friendly and very open gave me the comfort and confidence of getting along with them and voicing out my side during meetings and or brainstorming. The light and stress-free atmosphere motivated me to work harder and be better and better everyday. Their advice served as my guiding principles during my stay and it really helped me a lot in accomplishing my job. Most of all, the most important thing that I learned from the organization and that I think I will never forget is the act of sharing. As an organization, Nevada Restaurant Association believes that the ultimate responsibility of all hotel and restaurant employees is to render their customers with world class services. In order to achieve that quality, they must share their knowledge with each other and aimed for the same goal. For them, being competitive is not about winning over other people but showcasing the best talents a person has. Nevada Restaurant Association believes that by helping each other, by sharing ideas and by teaching it to those who are willing to learn that the entire community of hotel and restaurant employees will be able to completely render high quality and world class services. It is through sharing of ideas that integration of little but talented ideas can happen to be able to establish an excellent strategy that will deliver utmost customer satisfaction and that will benefit everyone in the industry. My internship in Nevada Restaurant Association is really one of the best experiences that I have in my life and I am willing to apply what I have learned in my future career to be able to help other people and contribute in enriching the industry that I am in. References: NRA. (2007). Nevada Restaurant Association. Available at: http://www. nvrestaurants. com/
Sunday, July 21, 2019
Cloud computing security
Cloud computing security Abstract The term Cloud computing becomes more popular day by day. As this is happening, security concerns start to arise. Maybe the most critical one is that as information is spread into the cloud, the owner starts to lose the control of it. In this paper we attempt to give a brief overview of what is described by the term Cloud computing and provide a small introduction to what we mean by Cloud computing security [Brunette, 2009]. Make a discussion of what are the security benefits that Cloud computing introduces and also the security risks that arise due to its adaptation according to [ENISA, 2009]. Index Terms Cloud, security, risks, security benefits. Introduction Cloud computing funds started to build in early 90s. The main idea behind cloud computing is to separate the infrastructure and the mechanisms that a system is composed of, from the applications and services that delivers [Brunette, 2009]. Clouds are designed in such a way that can scale easily, be always available and reduce the operational costs. That is achieved due to on demand multi-tenancy of applications, information and hardware resources (such as network infrastructure, storage resources and so on). According to [Mell, 2009] Cloud computing is composed by five Essential Characteristics, three Service Models and four Deployment Models as shown in figure bellow. More details on each of the above components can be found in [Mell, 2009] Security The way that security control is implemented on Cloud computing is most of the times similar to this of traditional IT environments. But due to the distributed nature of the assets security risks vary depending on the kind of assets in use, how and who manages those assets, what are the control mechanisms used and where those are located and finally who consumes those assets [Brunette, 2009]. Furthermore earlier we mentioned that multi-tenancy. This means that a set of policies should be implementing how isolation of resources, billing, segmentation and so on is achieved is a secure and concise way. In order to measure whether the security that a Cloud Provider (CP) offers is adequate we should take under consideration the maturity, effectiveness, and completeness of the risk-adjusted security controls that the CP implements. Security can be implement at one or more levels. Those levels that cover just the Cloud infrastructure are: physical security, network security, system security and application security. Additionally security can take place at a higher level, on people, duties and processes. It is necessary at this point to have understanding of the different security responsibilities that CPs and end users have. And also that sometimes even among different CPs the security responsibilities differ. Security Benefits [ENISA, 2009] in its report has spotted the following top security benefits that arise due to the use of Cloud computing. Security and the benefits of scale: when implementing security on a large system the cost for its implementation is shared on all resources and as a result the investment end up being more effective and cost saving. Security as a market differentiator: as confidentiality, integrity and resilience is a priority for many the end users, the decision on whether they will choose one CP over another is made based on the reputation this CP has on security issues. Hence competition among CPs made them provide high level services. Standardise interfaces for managed security services: as CPs use standardise interfaces to manage their security services the Cloud computing market benefits from the uniformity and tested solutions this introduces. Rapid, smart scaling of resources: Cloud computing is considered resilient since it has the ability to dynamically reallocate resources for filtering, traffic shaping, authentication, encryption. Audit and evidence gathering: since virtualization is used in order to achieve Cloud computing, it is easy to collect all the audits that we need in order to proceed with forensics analysis without causing a downtime during the gathering process. More timely, effective and effective updates and defaults: another thing that Cloud computing benefits from virtualization is that virtual machines (VM) can come pre-patched and hardened with the latest updates. Also in case of a configuration fault or a disaster caused by changes made on the VM, we can rollback to a previous stable state. Benefits of resource concentration: having all of your resources concentrated makes it cheaper to maintain and allows physical access on those easier. That outweighs most of the times the risk the disadvantages that this generates. Security Risks The following classes of cloud computing risks were identified by [ENISA, 2009]. Loss of governance: as users do not physically posses any resources, CPs can take control on a number of resources. If those resources are not covered from an SLA security risks arise. Lock-in: as we write this paper there is still no standardization on how to move data and resources among different CPs. That means in case a user decides to move from a CP to another or even to migrate those services in-house, might not be able to do so due to incompatibilities between those parties. This creates a dependency of the user to a particular CP.. Isolation failure: one of the disadvantages of multi-tenancy and shared resources occurs when the resource isolation mechanism fails to separate the resource among users. That can occur either due to an attack (guest-hopping attacks) or due to poor mechanism design. In present days attacks of this kind are pretty rare compared to the traditional Oss but for sure we cannot rely just on that fact. risk category covers the failure of mechanisms separating storage, memory, routing and even reputation between different tenants. Compliance risks: there is a possibility that investing on achieving certification is put under risk due to the following: The CP cannot provide evidence of their own compliance with the relevant requirements The CP does not permit audit by the cloud customer (CC). Also it is possible that compliance with industry standards is not able to be achieved when using public Cloud computing infrastructure. Management interface compromise: CPs provide to the users, management interface for their resources on public Cloud infrastructures. That makes those interfaces available over the internet allowing remote access applications or web browsers vulnerabilities to allow access on resources from unauthorised users. Data protection: CP is possible to handle data in ways that are not known (not lawful ways) to the user since the users looses the complete governance of the data. This problem becomes even more obvious when data are transferred often between locations. On the other hand, there are lot of CPs that provide information on how data are handled by them, while other CPs offer in addition certification summaries on their data processing and data security activities. Insecure or incomplete data deletion: there are various systems that upon request of a resource deletion will not completely wipe it out. Such is the case with Cloud computing as well. Furthermore difficulties to delete a resource on time might arise due to multi-tenancy or dues to the fact that many copies of this resource can exist for backup/ redundancy reasons. In cases like this the risk adds to the data protection of the user is obvious. Malicious insider: there is always that possibility that an insider intentionally causes damage. For that reason a policy specifying roles for each user should be available. The risks described above constitute the top security risks of cloud computing. [ENISA, 2009] further categorises risks into policy and organizational risks, technical risks, legal risks and finally not specific risks. Vulnerabilities The list of vulnerabilities that follows [ENISA, 2009], does not cover the entirety of possible Cloud computing vulnerabilities, it is though pretty detailed. AAA Vulnerabilities: Special care should be given on the authentication, authorization and accounting system that CPs will use. Poor designed AAA systems can result to unauthorized users to have access on resources, with unwanted results on both the CP (legal wise) and the user (loss of information). User provisiontion vulnerabilities: Customer cannot control provisioning process. Identity of customer is not adequately verified at registration. Delays in synchronisation between cloud system components (time wise and of profile content) happen. Multiple, unsynchronised copies of identity data are made. Credentials are vulnerable to interception and replay. User de-provisioning vulnerabilities: Due to time delays that might occur, credential of user that have earlier logged out might appear to still be valid. Remote access to management interface: Theoretically, this allows vulnerabilities in end-point machines to compromise the cloud infrastructure (single customer or CP) through, for example, weak authentication of responses and requests. Hypervisor Vulnerabilities: In virtualized environments Hypervisors is a small piece of middleware that is used in order to be able to control the physical resources assigned to each VM. Exploitation of the Hypervisors layer will result on exploiting every single VM on a physical system. Lack of resource isolation: Resource use by one customer can affect resource use by another customer. For example IaaS infrastructures use systems on which physical resources are shared among VMs and hence many different users.. Lack of reputational isolation: The resource sharing can result on one user acting in such a way that its actions have impact on the reputation of another user. Communication encryption vulnerabilities: while data move across the internet or among different location within the CP premises it is possible that someone will be reading the data when poor authentication, acceptance of self-signed certificates present and so on. Lack of or weak encryption of archives and data in transit: In conjunction with the above when failing to encrypt data in transit, data held in archives and databases, un-mounted virtual machine images, forensic images and data, sensitive logs and other data at rest those are at risk. Poor key management procedures: Cloud computing infrastructures require the management and storage of many different kinds of keys; examples include session keys to protect data in transit, file encryption keys, key pairs identifying cloud providers, key pairs identifying customers, authorisation tokens and revocation certificates. Because virtual machines do not have a fixed hardware infrastructure and cloud based content tends to be geographically distributed, it is more difficult to apply standard controls, such as hardware security module (HSM) storage, to keys on cloud infrastructures. Key generation: low entropy for random number generation: The combination of standard system images, virtualisation technologies and a lack of input devices means that systems have much less entropy than physical RNGs Lack of standard technologies and solutions: This is the case of lock-in risk, where users cannot move across different providers due to the lack of standards. No control on vulnerability assessment process: If CPs will not prevent their users from port scanning and testing for possible vulnerabilities and also there is no audit on the time of use (ToU) for a user (something that places responsibility on the customer) severe infrustrusture security problems will arise. Possibility that internal (Cloud) network probing will occur: Cloud customers can perform port scans and other tests on other customers within the internal network. Possibility that co-residence checks will be performed: Side-channel attacks exploiting a lack of resource isolation allow attackers to determine which resources are shared by which customers. Lack of forensics readiness: While the cloud has the potential to improve forensic readiness, many providers do not provide appropriate services and terms of use to enable this. For example, SaaS providers will typically not provide access to the IP logs of clients accessing content. IaaS providers may not provide forensic services such as recent VM and disk images. Sensitive media sanitization: Shared tenancy of physical storage resources means that sensitive data may leak because data destruction policies applicable at the end of a lifecycle may either be impossible to implement because, for example, media cannot be physically destroyed because a disk is still being used by another tenant or it cannot be located, or no procedure is in place. Synchronizing responsibilities or contractual obligations external to cloud: Cloud customers are often unaware of the responsibilities assigned to them within the terms of service. There is a tendency towards a misplaced attribution of responsibility for activities such as archive encryption to the cloud provider even when it is clearly stated in the terms of the contract between the two parties that no such responsibility has been undertaken. Cross cloud applications creating hidden dependency: Hidden dependencies exist in the services supply chain (intra- and extra-cloud dependencies) and the cloud provider architecture does not support continued operation from the cloud when the third parties involved, subcontractors or the customer company, have been separated from the service provider and vice versa. SLA clauses with conflicting promises to different stakeholders: An SLA might include terms that conflict one another, or conflict clauses made from other providers. SLA causes containing excessive business risk: From CPs perspective an SLA can hide a bunch of business risks when someone thinks of the possible technical failures that might arise. At the end user point SLAs can include terms that can be disadvantageous. Audit or certification not available to customers: The CP cannot provide any assurance to the customer via audit certification. Certification schemes not adapted to cloud infrastructures: CPs will not really take any actions to provide security measures that comply with Cloud computing security standards. Inadequate resource provisioning and investments in infrastructure: This vulnerability comes in hand with the one that follows. Provisioning of resources should be done carefully in order to avoid failures of the provided services. No policies for resource capping: CPs should make really well provisioning of their resources. Also end users should be able to configure the resources that are allocated to them. If the limits of requested resources exceed this of the available resources results can be unpredictable. Storage of data in multiple jurisdictions and lack of transparency: Multiple copies of users data can exist since mirroring of the data is performed in order to achieve redundancy. During that time the user should we aware of where are those data stored. Such a move can introduce unwanted vulnerabilities since CPs may violate regulations during this time. Lack of information jurisdictions: there might be a case where data are stored using high level of user rights. In that case end users should be aware of it in order to take preventing measures. Conclusion In this paper we tried to give a brief overview of cloud computing and discuss what security on Cloud computing means. Furthermore, we made it easy for the reader to understand what the benefits and risks of moving toward Cloud computing are. Vulnerabilities of Cloud computing are listed as those were described in [ENISA, 2009], allowing us to have a full view of what are the considerations that we should keep in mind when moving on Cloud computing. It is also well understood that exhaustive risk and security control is not recommended on all Cloud computing implementations. The level of control should always depend on prior evaluation. There are still lot of open research areas on improving Cloud computing security, some of those are; Forensics and evidence gathering mechanisms, resource isolation mechanisms and interoperability between cloud providers. References [ENISA, 2009] ENISA editors. (2009). Cloud Computing Benefits, risks and recommendations for information security. . [Accessed 25 March 2010] [Brunette, 2009] Glenn Brunette and Rich Mogull (2009). Security Guidance for Critical Areas of Focus in Cloud Computing, Version 2.1 [Accessed 25 March 2010] [Mell, 2009] Peter Mell and Tim Grance (2009). The NIST Definition of Cloud Computing, Version 15. [Accessed 26 March 2010]
Principles Of Additive Manufacturing
Principles Of Additive Manufacturing Additive manufacturing (AM) is a general term for all technologies that produce parts by layer addition of material at the micron level, to achieve the required shape, besides of metal removal technique which is traditional subtractive process. During research period, AM the layer by layer manufacturing terminology has been standardised by the American society for testing and materials (ASTM) committee F42 on additive layer technologies. In the beginning AM technologies were restricted because of commonly accepted leading name Rapid prototyping (RP) for the production of parts and prototypes, which was the term used for many years to describe all layer additive manufacturing processes. Advancement in the material, process and system hardware cleared that the parts could be manufactured with an adequate mechanical property to let for further applications. This allowed the production of end use models with layer additive technologies, so rapid manufacturing (RM) was adopted which distinguish the functional nature of the models produced from the prior RP parts and prototypes. Recently AM is used generally and RM and RP are only use to illustrate the particular application of AM technologies. 1.2.1: Principles of Additive Manufacturing AM technologies fabricate models by fusing, sintering or polymerisation of materials in predetermined layers with no needs of tools. AM makes possible the manufacture of complex geometries including internal part detail that are approximately not possible to manufacture using machining and moulding processes, because process does not require predetermined tool paths, draft angles and under cuts. In AM the layers of a model are formed by slicing CAD data with professional software. All AM system work on the same principle; however, layer thickness depend upon parameters and machine being used and thickness of layer range from 10à µm up to 200à µm. Layers are clearly visible on the part surface in AM operation, which controls the quality of final product. The relation between thickness of layer and surface orientation is known as staircase effect. However, thinner the layer is the longer the processing time and higher the part resolution. Layers in AM are built up at the top of the previous one in z axis. After layer gets processed the work platform is dropped down by the single layer thickness in z axis and the fresh material layer is recoated differently for number of other methods. In resin based system traversing edge flatten the resin, in powder based system deposited powder is spread using roller or wiper, in some system the material is deposited through a nozzle which deposits the required material. Because recoating time is even longer than the layer processing time. For that sake multiple parts are building together in the time of single material recoating build. Different softwares are available to position and orient part so that maximum number of parts can be built together. Available softwares are VISCAM RP and Smart Space used in MAGICS. Some delicate parts produced through AM technologies need a support structure to hold the part in work platform during the build process. All AM machine uses different support structure that are designed from specific material for effective use of build parts. Commonly used support structures are thin small pointed teeth to minimising the part contact so that they can be removed easily with the hand tools. 1.3: Rapid Prototyping Rapid prototyping processes are a relatively recent development, accurately described as layer manufacturing processes. The first commercial RP machine was released at the AUTOFACT show in Detroit (USA) in November 1987 by the company named 3D systems. The process begins with creating a 3D model using CAD software and it is identical for all built techniques. The model is then convert in to Standard Triangulation Language (STL) format, this format shows the 3D surfaces as an assembly of many planner triangles. At next stage STL file slice the 3D model in to layers. As we know the additive manufacturing is gradual process in which parts are manufactures through layers and each layers are joined and process continues until the final part formed. Post processing is usually required to improve the surface finish of the product. RPs additive nature allows is to create parts with complicated internal features which is not possible by other means like hollow areas and undercuts for that these parts sometimes supports are necessary. (palm, W. (1998, May). Rapid Prototyping primer. Retrieved November 4, 2010, from Learing factory Rapid prototyping home page: http://www.mne.psu.edu) RP products often have low functionality and commonly used as a visual aids with in product development. However material selection decide the prototype testing for short term functionality parts. Most of the RP materials are polymer based, which is for limited part functionality. Although for little part functionality paper and starch based materials are used. RP modernised the product development with an ability to produce single and multiple physical models, facilitating the reduction of product development cycle time ranging for different industries. 1.3.1: Rapid prototyping technologies There is a huge number of experimental RP technologies either in development or used by small groups of individuals. RP techniques those are currently commercially available including: Stereolithography (SLA) is the first RP technique developed by 3D systems in 1987. SLA builds single layer at a time by tracing beam of laser on the vat of liquid UV curable photo polymer resin. UV light strikes the surface of the polymer resin and solidify the single layer of resin, when one layer is cured the built platform is dropped down by single layer thickness (Schmitt, Q. L. (2005). Rapid prototyping in dentistry: technology and application. Rapid prototyping in dentistry: technology and application , 11-13,42,44). A resin filled blade sweeps over the cross section and fill it with fresh material for further curing at the top of the previous layer, process continues until the model is produced. Material self adhesive property bond each layer and form a complete 3D model, fabricated part is cleaned in dawanol resin, alcohol and then cured in a UV oven. (wikipedia. (2010). wikipedia free encyclopedia. Retrieved November 1, 2010, from wikipedia web site: http://en.wikipedia.org/ wiki/stereolithography) Selective laser sintering (SLS) uses powdered materials. This is one of the systems major advantages that a part could be built in any fusible powdered material. SLS technology was developed in Texas University, which was commercialized in 1993 by company named DTM. In 2001 the DTM were bought out by 3D systems. (http://www.jharper.demon.co.uk/rptc01.htm) This technology works by selectively sintering fine powder materials directly using an infrared (IR) laser from CAD. Numbers of thermoplastic materials are processed in SLS like nylon (polyamide) for rapid tooling application, aluminium filled nylon, polystyrene for sacrificial pattern in investment casting and gas filled nylon. Part produced through this process used as functional model as well as visual prototypes because of good mechanical properties. However as compared to traditional tool steel the part had poor mechanical properties, so material required post processing to form dense models, thus it was very difficult to control the part accuracy because of introduced stresses in processing stage. With the combination of EOS GmbH and Electrolux a special alloy powder was developed, which did not develop shrinkage distortions. Moreover introduction of fibre laser technology allowed the introduction of Selective laser melting (SLM) since the fibre laser allowed the sintering of metals that were completely melted in to dense part with no need of post process infiltration. Numbers of other technologies have been commercialised since 1991 such as laminated object manufacturing (LOM), fused deposition modelling (FDM), 3 dimensional printing (3DP). Recent technological availability of RP is increased with material diversity, which increased the efficiency of creating physical prototype in advanced product development. 1.4: Definition of Rapid Manufacturing Firstly, it is essential to give a definition of rapid manufacturing. The way that several parts are manufactured will change in the future. RM has been explained as the use of a CAD-based automated AM process to construct parts that are used directly as finished products or components (Hopkinson et al. 2006, p. 1) Since with the time change, the research on AM technologies and materials has advanced and the feasibility of fabrication of functional, low volume parts are increasingly in many industries. Many industries are examining the available technology and investigating the possibilities of design to increase the high functional component and to reduce product to market time. A key benefit of RM approach claimed that it proposes the opportunity of mass customization, however can be cost effective for individual short run part, clearing conventional designing constraints of manufacturing processes. RM greatly minimised wastage of raw material as compared to subtractive process, so got popular in aerospace industry, where expensive metal alloys are extensively used. The grade material such as titanium, ABS, nylon and aluminium has been the important part in the progress of RM technologies. (http://www.hse.gov.uk/horizons/rapidmanufacturing.pdf) The introduction of RM is not as simple as it first appears, although research in RM technologies and application are progressed by RP. The evolution is still in progress to link RM from research to actual manufacturing for that number of matters to be addressed that prevail need explanation and consensus before it can happen. RP produced prototype were not considered for product repeatability and quality measures. Since products of RM have proposed functionality, industrial certification and the requirements include material control, accuracy, speed, surface finish and part repeatability, so that RM is successfully applied in many industries including medical, automotive and aerospace to produce low quantity of small, high value parts with complex geometries that is difficult through conventional methods. (http://www.rm-platform.com/index2.php?option=com_docmantask=doc_viewgid=129Itemid=5) In future, RM technology addition in industries can offer small complex design feature parts that ever imagined with great manufacturing facilities and the extension of approach. Development of advanced materials and equipment enable the fabrication of complex product by directly manipulating the matters on a molecular scale. 1.5: Selective laser melting (SLM) 1.5.1: SLM background Selective laser melting machine was first introduced by Fockele and Schwarze (FS) of Germany in 1999 with the support of Fraunhofer institute of laser technology that was steel powder based SLM machine. Later in 2004 first SLM machine named Realizer 250 SLM was released commercially after FS coped up with MTT (MCP tooling technologies) and in 2005 high resolution machine named SLM Realizer 100 was released. Since the release of the MCP Realizer SLM, other manufacturer such as Concept laser and EOS released machine with different process named Laser curing and Direct metal laser sintering respectively. Concept laser (GmbH) first released M3 Liner and M1 Cusing in 2001, later they released another machine named M2 Cusing to produce reactive materials like titanium and aluminium alloys. EOS released the machine named EOSINT M 270 DMLS in 2003 and termed as the most common machine for direct metal fabrication. In 2008 MTT and 3D systems proclaimed a distribution agreement for the rights to distribute SLM machines in Americas and Japan. In 2008-09 new version of SLM was released by MTT named SLM 250 and SLM 125. 1.5.2: Basic principles of SLM SLM is a powder based additive manufacturing process that permits attaining 3D functional parts from a CAD data. SLM follows the same process route as SLS, where complete melting of powder occurs instead of sintering or partial melting. Process begins with the deposition of thin layer of powder thickness ranging from 50à µm to 75à µm across a substrate platform. A high power fibre laser scans the powder surface, the generated heat melt the powder particles and form molten pool. Once the layer has been scanned, the platform drops down by single layer thickness in z axis and the fresh layer of powder is deposited and the process is repeated until the entire built is completed. Loose powders are removed once the fully dense part is complete. SLM parts must be completed in inert gas atmosphere such as argon to remove oxygen from the building chamber. Supports like thin teeth shaped are needed to secure hanging features due to shrinkage of material solidification. The substrate is removed from the build chamber once the process gets complete and supports are removed carefully. SLM termed as the most viable techniques for direct fabrication of complex featured part of metals. SLM can permit the design optimization and production of the complex functionalities beyond the capabilities of traditional techniques, which is possible because of accuracy, versatility and the laser beam spot size. The small laser spot size minimizes the area to be melt enabling the manufacturing the part of high resolution. However, to be positioned SLM in RM category as a general method to achieve greater recognition in companies, methods and development need to be changed to perform and prove itself as being reliable, repeatable and cost effective production process. SLM also known as freeform fabrication process and capable to build thin wall complex features models of high resolution and extends its capabilities than the conventional processes such as customised medical implant especially dental crown and bridge frame work, tooling inserts with conformal cooling channel and functional models. SLM concerns primarily turn around the application of high powered fibre laser to generate high temperature to completely melt the powder, surface roughness is the main concerns of SLM because of high heat input causes material vaporisation and generation of spatter that subjected by melting and re-solidifying. But SLM parts cover committed microstructure parts and material properties that make possible this technique for the application. Benefits of SLM: Parts produced in this process are nearly 100% dense and have same mechanical strength as the original material Almost no powder material is wasted, the loose powders which was not solidified can be reused SLM offers minimum time to market, exact shape generation without an expansive moulds, process flexibility and great utilization of material SLM powder bed technology permits cheap and fast powder metallurgy. The alloys to be tested can utilized straightly with in the prototyping apparatus and alloys can easily accustomed with the change of elemental ratio of powders Drawbacks of SLM: SLM is regarded as the high temperature gradient, which causes thermal stress build up and rapid solidification so coarse to grainy surface finished parts are produced The inadequate availability of some materials in powder form restricts the range of material for processing. Process should be optimised for available material (Selective laser melting, 10 December; http://raproto.com/?cat=31, accessed on 25/5/2011 and http://www.mtm.kuleuven.be/Onderzoek/a2p2/researchtopics/SLM, accessed on 26/5/2011) 1.5.3: SLM materials SLM technology worked with all possibly relevant metals for part production. Process starts with identifying the physical behaviour of material being used with microscopic level of process understanding. In order to develop technique, the main quality aspect of parts being produced includes surface roughness, high functional strength, accuracy, density, hardness, residual stresses have to be observed before applied for the industrial applications. SLM system always develops parts with variety of materials and new ranges in which material property is easily changed with the property requirement with changing the mixture ratio. The range of materials are used that improved the new work powders such as tool steel, stainless steel, titanium alloy, aluminium alloy, cobalt chrome and inconel. (http://www.mtt-group.com/data/pdf/extract/0413-MTT_2pp_SLM_A4_%20Flyer_v1.pdf) Materials are described below according to property, alloy and applications: (http://www.xyzinnovation.com.au/assets/slm-brochure_290709.pdf) Titanium: Mechanical properties: High strength, low thermal expansion, high corrosion resistance, excellent machinability and bio compatibility and low weight. Alloys: Pure titanium, Ti-6Al-7Nb and Ti-6Al-4V Applications: Medical implants, jewellery and design, F1 motor sport and aerospace Cobalt chrome: Mechanical properties: High strength, excellent corrosion resistance and bio compatibility and high toughness Alloy: CoCr ASTM F75 Applications: medical implant, dental and high temperature Stainless steel, tool steel: Mechanical properties: High toughness, hardness and corrosion resistance and excellent machinability Alloys: 316L stainless steel, H13 tool steel, 17-4PH, 50CrMo4, CrNiMo 13-4 and M333 Applications: medical implants, spindle and screws, plastic injection moulds and maritime Aluminium: Mechanical properties: Excellent alloying properties and processability and low density Alloys: Al-Si-10Mg, Al-Si-12Mg, Al-Si9-Cu3, Al-Si-7Mg and Al-Mg4 Applications: Aerospace, automotive, consumer goods Inconel: Mechanical properties: Good mechanical strength, excellent corrosion resistance, outstanding welding ability and good creep rapture strength up to 700C Alloys: Inconel 718 and Inconel 625 Applications: Aerospace, gas turbines, space shuttle and crafts, nuclear reactors and rocket motors Integration of SLM in production systems: Process chain Function SLM process chain Part Finish (Machining) Part Design Process Strategy Process Control Process Preperation Designed for optimized Part orientation built strategy online defect Interface for Functionality (quality/ build time) -built parameters detention machining (light, weight, -support structure -under cuts etc -close loop control energy efficient etc ) (www.materialscluster.lu/content/download//Wilhelm_Intermat2011.pdf, accessed on 30/5/2011) SLM machines: SLM50 Realizer: Worlds first SLM desktop machine to produce quickly and extremely accurately manufacture functional dental parts based on CAD data. It is well appropriate for dental laboratories and similar environments for the production of bridge and crown frame and brackets. This machine is capable to produce 100 parts/ months. SLM50 designed a component with height up to 40mm and diameter up to 60mm. (http://www.industrialnews.org/2011/03/worlds-first-slm-desktop-machine-dental.html#ixzz1NtOkViL9) SLM50 specifications Construction volume Platform diameter 70 mm, max. construction height 40 mm Thickness of layers 20-50 ÃŽà ¼m Laser type Fibre laser 20 to 120 W Power supply 16A, 230V Power consumption 1.0 KW Argon consumption approx. 30 Liter/h Dimensions W800 x D700 x H500 mm Weight approx. 80 kg Software ReaLizer Control Software Materials Cobalt Chrome, Stainless Steel 316 L, gold-, silver-, palladium-, titanium alloys (http://www.progold.com/GB/Files/Realizer.pdf) https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhDzMkOVgm5mOxll0sddX7b_mRp-sAJ6g4nyBZakylZ6-umBmPXplMw0vipRpkFpnJIitZGAURrHTEEjp6etK8qBiXR-DK7uI8anN4GKUzOu4eZqVw1ALXV-jTjBGTTb-x2RtgMfzj7CeBM/s1600/SLM-50-1024682.jpg (http://www.industrialnews.org/2011/03/worlds-first-slm-desktop-machine-dental.html) SLM100 Realizer: Machines capability to design a component with 100mm high cylindrical construction area with 125mm diameter, because of the dropped laser spot size to 20à µm. The machine can produce parts with delicate features, high surface quality and maximum wall thickness. SLM100 is appropriate for dental laboratories or related environments. SLM100 specifications Construction volume Platform diam. 125 mm Max. overall constr. height 100 mm Layer thicknesses 20-100 ÃŽà ¼m Laser type Fibre laser 20 to 200 W Power supply 16A, 400V Power input 1.5 kW Argon consumption app. 35 l/h Dimensions W900 x D800 x H2400 mm, SLM100A additional display support arm Weight 500 kg Software ReaLizer control software Materials Tool steel H 13, titanium, titanium V4, aluminium, cobalt chrome, stainless steel 316 L, Inconel, Gold, ceramic materials under development (http://www.realizer.com/en/wp-content/themes/realizer/ReaLizer.pdf) (http://www.twi.co.uk/content/laser_slm.html) SLM125: The SLM125 machine presented with a range of laser from 100-200W with 30mm laser spot size diameter. This machine is capable to built pattern geometries of 200à µm. Surface finish is controlled by laser scan approach, however build speed and surface finish is majorly depends on material that to be processed such as tool steel take more time than the aluminium and titanium. For fully dense part the both parameters surface finish and build speed should range from 15-30à µm and 5-200cm3/hr respectively. (http://www.sme.org/cgi-bin/find-articles.pl?ME09ART20ME20090401SME) This machine has been designed for the simplicity to the users with in a industry with touch screen features, which cleans down the process. Robustness of the machine has given precedence to the adopters. The recoater blade used in this system is soft and carefully designed to reduce consumable cost by rotating same blade many times before replacement, and low filter element causes low gas consumption, results machine reliable and minimum in cost to users. SLM125 specifications Construction volume 125mm x 125mm x 125mm (x,y,z) Layer thicknesses 20 to 100ÃŽà ¼m Laser type Fibre laser 100-200 W Power supply 16A, 400V Power input Argon consumptionm Dimensions Weight Software ReaLizer control software Materials Tool steel H13, titanium , titanium V4, aluminium, cobalt chrome, stainless steel 316 L, Inconel (http://www.mtt-group.com/data/pdf/extract/0413-MTT_2pp_SLM_A4_%20Flyer_v1.pdf) MTT SLM25 (http://develop3d.com/profiles/box-clever) SLM250: This machine measures construction area of 250ÃÆ'-250ÃÆ'-250mm. The space in the processing area can be used to produce maximum number of parts with loading numerous parts at the top of each other. SLM250 is equipped with high power laser up to 400W with an automated filter machine to remove and recycle loose powders from the processing area. High part output makes it appropriate for industrial manufacturing process. SLM250 specifications Construction volume 250 x 250 mm , maximum construction height 220 mm Layer thicknesses 20-100 ÃŽà ¼m Laser type Fibre laser 100, 200 or 400 W Power supply 16 A, 400 V Power input 2.5 kW Argon consumption app. 70 litres/h Dimensions W1800 x D1000 x H2200 mm w/o sieving machine Weight 800 kg Software ReaLizer control software Materials Tool steel H13, titanium , titanium V4, aluminium, cobalt chrome, stainless steel 316 L, Inconel (http://www.realizer.com/en/wp-content/themes/realizer/ReaLizer.pdf) http://www.renishaw.com/media/img/gen/8a0166f5acc64a4190c81957ffe11b05.jpg (http://www.renishaw.com/en/renishaw-acquires-mtt-investments-limited14897) D1: (http://doc.utwente.nl/52914/1/Wa1025.pdf) D2: (http://pic.sagepub.com/content/220/6/857.full.pdf) D3: (http://www.meditech.cf.ac.uk/pages/Individula%20Meetings/15th%20Nov%202007/presentations/R%20Bibb%20-%20PDR%20-%20ARUP%20Nov%202007.pdf) SLM 125 machine run: SLM 125 machine operated in the following manner: Turn on from the back- MTT 125 screen showed up- Tap on the screen- Login with the user name MTT2- Tap light (light opens)- Tap to open the door- hold reset and open the door Wiper reset: Tap to wiper and elevator on the screen- find wiper home- tap to substrate and set thickness to 0- press Esc- hold reset and open the door. Tap to wiper and elevator- find wiper home- Go to FWD POS- then unscrew the wiper arm from both ends To draw material holder or wiper tension: unscrew both the nuts placed at the ends with pressing at the top. Attach back both the wiper tension and wiper arm to their respective positions- shut the door Before placing the platform in the machine , first measure the base plate with vernier calliper then Tap to wiper and elevator- find wiper home- tap at substrate and set the thickness to 14.5- tap at table auto (it will built)- Tap at set datum- find table home. Go again- substrate set to 0- Go to top POS- Tap at Go to Centre to position wiper at the centre C:UsersP10507465DesktopWiper_tension[1].JPG Lift wiper and place paper then tight it. Clockwise rotation of screw to loose and anticlockwise to tight it. Later paper is removed. Just ensure that you should put the same pressure during screwing. After setting the wiper arm at the paper sheet thickness- close the door- tap to wiper and elevator- find wiper home To clean filter assembly: Remove both caping placed at the top and bottom and do not forget to remove the rings- unbolt the holder- remove the filter (twist and draw)- clean the chamber- push filter to attach- bolt it C:UsersP10507465DesktopFilter_Assy.JPGC:UsersP10507465DesktopFilter_removal.JPG Tap to wiper and elevator- find wiper home- set datum- Dose to 3- Go to FWD POS- open with holding reset button. Close the door- find wiper home- Esc- select- auto (safe change filter valve- yes)- auto operation starts- click ok- Isolate change filter- confirm. Operation or part building starts and it logged out automatically after finishing the operation Login again with user name MTT2- tap to wiper and elevator- find wiper home- Go to up- Esc- open the door Cleaning: Slowly remove the powder with the brush- later hover it to clean properly. Unscrew the base plate- Brush again not to waste powder. Close the door- wiper elevator- find wiper home- Go to FWD POS- Esc- open the door holding reset button Unscrew the wiper plate and clean- the red strip on the wiper arm turns black at worked portion means damaged. Unscrew material holder- brush the machine to restore loose powder to the holes (for titanium cleaning is really important) Over flow cleaning: Unscrew loose powder holder underneath the platform. Put screw at close position and turn around to unscrew it to recover loose powders- screw it and place it in desired place including rings and caping Set wiper back at the position to clean lense- unscrew it and clean it with proper handling Dental suprastructure The manufacturer is also is involved in the dental industry, for which the company manufactures products such as implant-supported suprastructures. Using patient-specific geometry data, acquired through medical imaging or 3-D scanning, the personalised structure is designed in software and printed in titanium. As a concluding step, the dental technician finishes off the structure and completes the final prothesis. Through patented DentWise technology, geometry and surface retention related limitations set by traditionally moulded or milled suprastructures no longer apply. Through digital SLM technology, geometry and surface retention related limitations set by traditionally moulded or milled suprastructures no longer apply, Mercelis says. In addition, the implant connections are completed with high precision. Implant bars and bridges achieve a fit accuracy better than 20 à µm at the implant interface. They also can integrate complex surface textures and sealing edges. DentWise suprastructures are manufactured using ultra-strong titanium alloy (Ti6Al4V, grade V), which outperforms the commonly used titanium grade II in terms of mechanical propertie (http://www.emdt.co.uk/article/selective-laser-melting)
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