Summary of ON PHOTOGRAPHY by Susan Sontag Essay Example | Topics and Well Written Essays - 250 words

Summary of ON PHOTOGRAPHY by Susan Sontag - Essay Example Taking photographs is fashionable with contemporary tourism activities especially when one’s explorations around the world for pleasure. Pictures put to preserve what an individual or group is experiencing as he or she is touring. To defend experience pictures are taken however, it confines experiences to images only. As a way of abating boredom during tours photographs are taken. (Walther Koenig, 2010). Camera captures pictures of everything enabling one to feel ad see events to completion. This supplies events with a kind of continuity and importance. Photography takes an instant out of time, changing life by holding it immobile. According to Elliott Erwitt â€Å"To me, photography is an art of observation. Its about finding something interesting in an ordinary place... Ive found it has little to do with the things you see and everything to do with the way you see

International Financial Markets Essay Example | Topics and Well Written Essays - 2000 words - 5

International Financial Markets - Essay Example Furthermore some countries have ended up losing their investment status of grade. This incident has placed the international investors in alert. Even before the downgrading of the first country into a grade of non-investment, the stock market was down, and some countries even become close to lose their access to capital market. As a result of this the European politicians directed their blame to the crediting rating agency of making thee debt crisis worse. Since 2011, the agency of rating has to regularly register with the European Security and Markets Authority (ESMA) which is also mandated with the further preparation of the legal action (Moloney, 2011). This regulation shows that the rating of credits have some control on the capital market. Some of the money market issue that was affected by the crisis that is to be discussed in this paper includes the macro-financial risk, intra-euro area financial flow, and collateral availability. In most of the countries in euro the deposits owned by the domestic banks were stable between 2010 and 2011. However the domestic banks in Ireland and Greece heavily fell. Ireland and Greece were not in a position to replace the deposits that were lost with other market borrowing or wholesale and the gap that existed by borrowing from their central banks (Whittaker, 2011). The relocation of the market money into the central bank balance sheet caused an inter-central bank debt that was very high within the system of the euro. Inter-commercial bank lending is a means of transferring money from area which have surplus to areas deficit areas (Friedman & Schwartz, 1970). For example if funds is withdrawn from the Greece bank and placed in the bank of Germany, this withdrawal will leave the Greece bank with deficit of money while the Germany bank will be in surplus of money. In the market condition that is normal, the

SSDD Forensics Issues Essay Example | Topics and Well Written Essays - 1000 words - 1

SSDD Forensics Issues - Essay Example The logical acquisition approach is based on acquiring a logical bit-by-bit copy of the directories and various types of files (address files) found within the iPhone file system. But, Physical acquisition implies a bit-by-bit copy of an entire physical store (e.g., a memory chip). Logical backups are considered a rich source of data files that can help build evidence. They can also provide proof of the pairing relationship between the computers that have been previously synced with the iPhone device if that computer was seized as part of the investigation. A physical acquisition has the advantage of allowing deleted files and data remnants to be examined. Physical extraction acquires information from the device by direct access to the flash memories. Generally, this is harder to achieve because the device vendors need to secure against the arbitrary reading of memory so that a device may be locked to a certain operator. The name of the backed-up folder is a long combination of forty hexadecimal numbers and characters (0-9 and a-f) and represents a unique identifier for the device from where the backup was obtained. This unique identifier appears to be a hashed value since it was the same unique name given to the backed-up folder by iTunes on both Mac and Windows operating systems. Within this folder reside hundreds of backup files with long hashed filenames consisting of forty numbers and characters. These filenames signify a unique identifier for each set of data or information copied from the iPhone memory. Backed-up data is stored in three file formats, plist files which stores data in plaintext format, mddata files which stores data in a raw binary format and info files which store encoded metadata of the corresponding binary mddata files. Figure 3 shows the Backup folder containing the backed-up files. Generally, the iPhone file system stores data in binary

Study On Gandhis Leadership Styles History Essay

Study On Gandhis Leadership Styles History Essay This essay gives an overview of various leadership types and its main focuson the situational leadership. It attempts to explain the situational leadership process with an example of Mohan Das Karamchand Gandhi as a situational leader. It further explores the attributes that Mahatma Gandhi as a situational leader possesses. The essay also tries to find out various effects of situational leadership. While mentioning the positive effects of the situational leadership, it also investigates the dark side of the situational leadership. After reading the essay the readers are expected to have gained enough familiarity with this kind of leadership and at the end of the essay. Any type of organisation, country or political party runs successfully when it is piloted by a skillful and influential leader. While leaders motivate their followers, it is not the only thing leaders can do. A good leader can structure the organisation in the way he wants. He represents the culture of the organization and most importantly, it has been observed that effective leaders posses a capacity to increase the productivity of the organization. Various scholars categorize leadership styles in a different way. Lewin (1939) classifies leadership styles in three categories: Autocratic Leadership, Democratic Leadership and Delegative (Laissez-Faire) Leadership. Mohandas Gandhi was born in the western part of British-ruled India on October 2, 1869. A timid child, he was married at thirteen to a girl of the same age, Kasturbai. Following the death of his father, Gandhis family sent him to England in 1888 to study law. There, he became interested in the philosophy of nonviolence, as expressed in the Bhagavad-Gita, Hindu sacred scripture, and in Jesus Christs Sermon on the Mount in the Christian Bible. He returned to India in 1891, having passed the bar, but found little success in his attempts to practice law. Seeking a change of scenery, he accepted a position in South Africa for a year, where he assisted on a lawsuit. In South Africa, he became involved in efforts to end discrimination against the Indian minority there, which were oppressed both by the British and by the Boers, descendants of the original Dutch settlers of the region. Having intended to stay a year, he ended up remaining until 1914 (his wife and children had joined him, meanwhile, in 1896). He founded the Natal Indian Congress, which worked to further Indian interests, and commanded an Indian medical corps that fought on the British side in the Boer War (1899-1901), in which the British conquered the last independent Boer republics. After the war, Gandhis reputation as a leader grew. He became even more adamant in his personal principles, practicing sexual abstinence, renouncing modern technology, and developing satyagraha-literally, soul- force. Satyagraha was a method of non-violent resistance, often called non-cooperation, that he and his allies used to great effect against the white governments in South Africa. Their willingness to endure punishment and jail earned the admiration of people in Gandhis native India, and eventually won concessions from the Boer and British rulers. By 1914, when Gandhi left South Africa and returned to India, he was known as a holy man: people called him a Mahatma, or great soul. At this point, he was still loyal to the British Empire, but when the British cracked down on Indian civil liberties after World War I, Gandhi began to organize nonviolent protests. The Amritsar Massacre, in which British troops gunned down peaceful Indian protestors, convinced Gandhi and India of the need for self-rule, and in the early 20s Gandhi organized large-scale campaigns of non-cooperation that paralyzed the subcontinents administration-and led to his imprisonment, from 1922 to 1924. After his release, he withdrew from politics for a time, preferring to travel India, working among the peasantry. But in 1930, he wrote the Declaration of Independence of India, and then led the Salt March in protest against the British monopoly on salt. This touched off acts of civil disobedience across India, and the British were forced to invite Gandhi to London for a Round-Table Conference. Although Gandhi received a warm welcome in England, the Conference foundered on the issue of how an independent India would deal with its Muslim minority, and Gandhi withdrew from public life again. But independence could not be long delayed. The Government of India Act (1935) surrendered significant amounts of power to Indians, and the Indian National Congress clamored for more. When World War II broke out, India erupted into violence, and many nationalist leaders, including Gandhi, went to prison. After the war, the new British government wanted to get India off its hands quickly. But Muhammed Ali Jinnah, the head of the Muslim League, demanded that a separate state be created for Indias Muslims, and to Gandhis great distress, the Congress leaders and the harried British agreed. August of 1947 saw Indias attainment of independence-as well as its partition into two countries, India and Pakistan. However, neither measure served to solve Indias problems, nor the country immediately fe ll apart: Hindus and Muslims killed each other in alarming numbers while refugees fled toward the borders. Heartbroken, Gandhi tried to calm the country, but to no avail. He was assassinated by a Hindu nationalist in Delhi on January 30, 1948, and India mourned the loss of its greatest hero. Gandhis leadership style is being termed as follower-centric and that took into account existing conditions before determining the strategy. Gandhi advocated having leadership styles that were dependent on the circumstances. When Gandhi was in South Africa, he launched his protests in a suit and a tie. But when he came back to India, he thought of khadi and launched non-violent protests on a greater scale; it shows that Gandhijis leadership style was situational leadership style. (http://www.sparknotes.com/biography/gandhi/summary.html) What is Leadership? Harry S. Truman, (2003) describes leadership as the ability to get men to do what they dont like to do and like it. John Gardner, (2003) describes leadership as the process of persuasion or example by which an individual (or a leadership team) induces a group to pursue objectives held by the leader or shared by the leader and his or her followers. The reciprocal process of mobilizing, by persons with certain motives and values, various economic, political and other resources, in a context of competition and conflict, in order to realize goals independently or mutually held by both leaders and followers. (James McGregor Burns, 2003). What is Situational Leadership? Hersey and Blanchard (1988) developed a particular form of contingency theory which has become well known as situational leadership. Making the point that the appropriateness of a leadership style is a function of the situation, they focused attention on subordinate maturity as a contingent variable, by which they meant the ability and willingness of a subordinate to work without direction. Where subordinate maturity is high, a relationship-oriented style is appropriate, but where maturity is lacking a more task-oriented style will prove more effective. Situational leadership theory is one of the type of leadership theory, leadership model and leadership style that believes that different leadership style suit different situations. That is as per the situation, you should apply leadership style. Situational leadership theory assumes that the best action to be taken by a leader depends on the situation. As the situation changes, you (leader) should also quickly change the leadership style. Depending on the situation, you (leader) should adopt leadership style. A situational leadership model is also associated with situational leadership theory. The basic idea of this model is that leadership flexibility is necessary for effective leadership. It also believes that different leadership approaches are required for different situations. This model defines four leadership styles. These styles are based on how much guidance or direction the leader can give to his or her followers. Situational Leadership Model : (Ollhoff.com) The above situational leadership model is applied on the Mahatma Gandhi in order to prove that he was a situational leader. In the following passages different action, reactions and incident from the life of the Gandhi are chosen that proves him a situational leader. Leadership developed by Robert House (1971) which defines that leaders make a clear and easy path for their followers and to fulfill the goals encourage and supports them to take it. The leaders clarify the path for followers and remove the roadblocks that might stop them from attaining the goal. For laying the path for followers a leader can follow any of the given leadership behavior. First the directive leader in which the leader lets the follower know what is expected of them, schedules work to be done and give specific guidance as to how to accomplish task. When Mahatma Gandhi called up all the community who were not being treated equally and made a speech to them asking all the non Europeans to burn their passes which showed their symbol of status. By doing so he was asking government for the right to claim them as equal citizens of the empire. We can see that he was making sure the followers know what is expected from them and he gave specific guidance what and how it would be accomplished. And for scheduling he made sure there is enough public gathered so he asks his wife to encourage some female along with her. The second kind of behavior is coaching leader who tries to promote good friendly relation within the group and shows concern for the welfare of the followers. In this way during Salt march from Ahmadabad to Dandi, Gandhi had gone there quietly; it would just not have made an impact. He knew he had to create an event to make an impact and so he took his followers on a march that stirred popular imagination of the time. He had a total understanding of the human psychology and used it along with his public relation skills. By doing this Gandhi coached his followers The third kind of behavior is supportive leader who tries to promote good friendly relation within the group and shows concern for the welfare of the followers. This kind of leadership depicted takes the help of followers for day-to-day decision. Decisions include processes and task allocation. The leader facilitates decisions but the final decision is taken by the follower. The Non-cooperation movement was a significant phase of the Indian struggle for freedom from British rule. This movement, which lasted from 1920 to 1922, was led by Gandhi, and supported by the Indian National Congress. It aimed to resist British occupation of India through non-violent means. Protestors would refuse to buy British goods, adopt the use of local handicrafts, picket liquor shops, and try to uphold the values of Indian honor and integrity. The Gandhian ideals of ahisma or non-violence, and his ability to rally hundreds of thousands of common citizens towards the cause of Indian independence, were fir st seen on a large scale in this movement. Gandhiji while working for independence of India used to consult other leaders like Pandit Nehru, Gokhale, Maulana Azad who were his followers as well. The last kind of leadership behaviour according to the Path-Goal theory is achievement-oriented leader where the leader sets a challenging goal both for self improvement and work. The leader shows and expects high demonstration and has faith in the capabilities of the followers to succeed.

Frosts Use of Simple Everday Subjects :: essays papers

Frosts Use of Simple Everday Subjects "Robert Frost is a poet of genius because he could so often make his subtleties inextricable from an apparent availability." Frost uses simple everyday subjects such as nature, man, and home to get his point across in his poetry. Robert Frost was born on March 26, 1874, in San Francisco California. His father, William Prescott Frost, was a journalist who worked for the Daily Evening Post in San Francisco. His mother, Isabelle Moodie Frost, came into the United State when she was 12 years old. Frost was born a year after his parents had gotten married. After Frost's father had died in 1885, he moved with his family to New England where he attended Lawrence High School. "Frost had published several poems in the school magazine and was named class poet." "He graduated in 1892, sharing valedictorian honors with Elinor White, to whom he became engaged." Frost then went onto Dartmouth College, he ended up dropping out of school after one semester. "He instead pursued a variety of jobs , including teaching at his mothers private school and working in a textile mill. In 1894 he published a few poems in The Independent and began corresponding with its literary editor." (Bloom p.12) In December 1895 he married Elinor. "In the early years of there marriage, Frost attended Harvard as a special student but withdrew in 1899 and took up poultry farming to support his growing family. The Frost's family life, often strained by emotional and financial anxieties, was marked by a series of tragedies. Their first child, Elliott, died of cholera at age three. Another child, Elinor Bettina, died two days after birth. Of the four children who lived to adulthood, Frost's daughter Marjorie died of childbed fever at age 29, and his son Carol committed suicide at age 39. Another daughter, Irma, had to be institutionalized for mental illness, as did Frost's sister Jeanie." Frost moved with his family in 1912 to England so he could focus more on his poetry and book publication. "A Boy's Will was published by the London firm of David Nutt and Company in 1913, and was reviewed favorably by American poet and critic Ezra Pound, a highly influential figure in modernist letters. Nutt published North of Boston a year later." As Frost was continuing to write poetry, he began to pursue what would be a life long career as a part-time college teacher.

Becoming a scholar practitioner

Studying human motivation has been interesting and an adventure. Thinking about what motivates people to do the things that they do is the same as asking myself why I wake up each day to work, to go to school and to be with my family. The course on human motivation for me has become a process of self-awareness and growth.I have learned that motivation is more than just needs and drives, more than intrinsic and extrinsic, more than values and goals, but that it is a complex process that is more than the sum of its parts.Human behavior is governed by the integration of internal and external processes and in order to understand behavior, one must be able to comprehend how the internal and external processes influence the person. I now realize that to be able to understand, predict and change behavior, the most important thing to examine is what motivates and what does not motivate him/her. In the same breath, effecting change to help disadvantaged individuals take control of their lives means providing them with the motivation to do so.The ability to think and examine human motivation theories and apply it to real life situations is in effect one of the enduring traits of a scholar-practitioner. A scholar practitioner is a professional who is committed to both study and explore the field that he/she is involved with and to be able to bring that learning and knowledge to his/her practice of her profession (Beck, 1999).Thus, a scholar-practitioner in the field of clinical psychology would commit herself to research and evaluation of her profession as well as applying what she has learned to her clients which would be most beneficial for them. In the past, scholars were confined to the academe; they researched and gained esteem through their work, and the practitioners practiced and became popular through their clients.However, one begins to see that the scholar and practitioner could learn from each other and by combining research and practice, one becomes a more ef fective instrument of social change. Social change is a giant leap, but nonetheless it starts from the small steps of the scholar-practitioner, for the objective of the scholar practitioner is always for the benefit of the greater number of people, if by helping a small group of people become better persons, then this groups would be able to touch more people and in the process change is facilitated.This course has helped me appreciate the psychology of human motivation and that there are a number of ways to extend that knowledge to real life situations, so that the knowledge is put to good use and I also believe that effecting change without the appropriate knowledge and training is ineffective.I see now that if I want to pursue a life dedicated to the helping profession, I must be able to understand what matters and what motivates the person so I could be of more service to them. I can only become a scholar-practitioner if I continuously seek learning experiences and trainings tha t would keep me abreast of the developments in my field as well as dedicating myself to seek new knowledge and new understanding of human behavior through research.Moreover, I need to translate that knowledge into my practice and therefore be able to give my clients the help they need and empowering them to take control of their lives and become agents of change in their own way. Reference Beck, L. G. (1999). Metaphors of educational community: An analysis of the images that reflect and influence scholarship and practice. Educational Administration Quarterly, 35; 19, 13-45.

Cloud Computing White Paper Essays

Cloud Computing White Paper Essays Cloud Computing White Paper Essay Cloud Computing White Paper Essay Cloud computing is a â€Å"newsworthy† term in the IT industry in recent times and it is here to stay! Cloud computing is not a technology, or even a set of technologies – it’s an idea. Cloud computing is not a standard defined by any standards organization. Basic understanding for Cloud: â€Å"Cloud† represents the Internet; Instead of using applications installed on your computer or saving data to your hard drive, you’re working and storing stuff on the Web.Data is kept on servers and used by the service you’re using; tasks are performed in your browser using an interface/ console provided by the service. A credit card and internet access is all you need to make an investment in technology. Business will find it easier than ever to provision technology services without the involvement of IT. There are many definitions available in the market for Cloud Computing but we have aligned it with NIST publication and with our understanding.NIST def ines cloud computing by describing five essential characteristics, three cloud service models, and fur cloud deployment models. Cloud Computing is a self service which is on demand, Elastic, Measured, Multi-tenant, Pay per use, Cost-effective and efficient. It is the access of data, software applications, and ad computer processing power through a cloud or a group of many on line/demand resources. Tasks are assigned to a combination of connections, software and services accessed over a network. This network of servers and connections is collectively known as â€Å"the cloud. Cloud service delivery is divided among three fundamental classifications referred as the â€Å"SPI Model. † Cloud computing  is the delivery of computing and storage capacity  Ã‚  as a service  to a community of end-recipients. The name comes from the use of a cloud-shaped symbol  as an abstraction for the complex infrastructure it contains in system diagrams. Cloud computing entrusts services w ith a users data, software and computation over a network. There are three types of cloud computing: * Infrastructure as a Service  (IaaS), * Platform as a Service  (PaaS), and Software asd a Service  (SaaS). The business model,  IT as a service  (ITaaS), is used by in-house, enterprise IT organizations that offer any or all of the above services. Using software as a service, users also rent application software and databases. The  cloud providers  manage the infrastructure and platforms on which the applications run. End users access cloud-based  applications  through a  web browser  or a light-weight desktop or  mobile app  while the business software  and users data are stored on servers at a remote location.Proponents claim that cloud computing allows enterprises to get their applications up and running faster, with improved manageability and less maintenance, and enables IT to more rapidly adjust resources to meet fluctuating and unpredictable busine ss demand. Cloud computing relies on sharing of resources to achieve coherence and  economies of scale  similar to a  utility  (like the  electricity grid) over a network. At the foundation of cloud computing is the broader concept of  converged infrastructure and  shared services.The origin of the term  cloud computing  is obscure, but it appears to derive from the practice of using drawings of stylized clouds to denote networks in diagrams of computing and communications systems. The word  cloud  is used as a metaphor for the Internet, based on the standardized use of a cloud-like shape to denote a network on telephony schematics and later to depict the Internet in  computer network diagrams  as an abstraction of the underlying infrastructure it represents. The cloud symbol was used to represent the Internet as early as 1994.In the 1990s,  telecommunications companies  who previously offered primarily dedicated point-to-point data circuits, began offe ring  virtual private network  (VPN) services with comparable quality of service but at a much lower cost. By switching traffic to balance utilization as they saw fit, they were able to utilize their overall network bandwidth more effectively. The cloud symbol was used to denote the demarcation point between that which was the responsibility of the provider and that which was the responsibility of the users. Cloud computing extends this boundary to cover servers as well as the network infrastructure.The underlying concept of cloud computing  dates  back to the 1950s; when large-scale  mainframe  became available in  academia  and corporations, accessible via  thin clients  /  terminal  computers. Because it was costly to buy a mainframe, it became important to find ways to get the greatest return on the investment in them, allowing multiple users to share both the physical access to the computer from multiple terminals as well as to share the  CPU  time, eliminating periods of inactivity, which became known in the industry as  time-sharing.As computers became more prevalent, scientists and technologists explored ways to make large-scale computing power available to more users through time sharing, experimenting with algorithms to provide the optimal use of the infrastructure, platform and applications with prioritized access to the CPU and efficiency for the end users. John McCarthy  opined in the 1960s that computation may someday be organized as a  public utility. Almost all the modern-day characteristics of cloud computing (elastic provision, provided as a utility, online, illusion of infinite supply), the comparison to the electricity industry and the use of public, private, government, and community forms, were thoroughly explored in  Douglas Parkhill’s 1966 book,  The Challenge of the Computer Utility. Other scholars have shown that cloud computings roots go all the way back to the 1950s when scientist  Herb Grosch  (the author of Groschs law) postulated that the entire world would operate on dumb terminals powered by about 15 large data centers.Due to the expense of these powerful computers, many corporations and other entities could avail themselves of computing capability through time sharing and several organizations, such as GEs GEISCO, IBM subsidiary The Service Bureau Corporation, Tymshare (founded in 1966), National CSS (founded in 1967 and bought by Dun ;amp; Bradstreet in 1979), Dial Data (bought by Tymshare in 1968), and  Bolt, Beranek and Newman  marketed time sharing as a commercial venture.The ubiquitous availability of high capacity networks, low cost computers and storage devices as well as the widespread adoption of  hardware virtualization,  service-oriented architecture, autonomic, and utility computing have led to a tremendous growth in cloud computing. After the  dot-com bubble,  Amazon  played a key role in the development of cloud computing by mod ernizing their  data centers, which, like most  computer networks, were using as little as 10% of their capacity at any one time, ust to leave room for occasional spikes. Having found that the new cloud architecture resulted in significant internal efficiency improvements whereby small, fast-moving two-pizza teams could add new features faster and more easily, Amazon initiated a new product development effort to provide cloud computing to external customers, and launched Amazon Web Service (AWS)  on a utility computing basis in 2006. [14][15] In early 2008,  Eucalyptus  became the first open-source, AWS API-compatible platform for deploying private clouds.In early 2008,  OpenNebula, enhanced in the RESERVOIR European Commission-funded project, became the first open-source software for deploying private and hybrid clouds, and for the federation of clouds. In the same year, efforts were focused on providing quality of service  guarantees (as required by real-time interac tive applications) to cloud-based infrastructures, in the framework of the IRMOS European Commission-funded project, resulting to a real-time cloud environment.By mid-2008, Gartner saw an opportunity for cloud computing to shape the relationship among consumers of IT services, those who use IT services and those who sell them  and observed that organizations are switching from company-owned hardware and software assets to per-use service-based models so that the projected shift to computing will result in dramatic growth in IT products in some areas and significant reductions in other areas. On March 1, 2011, IBM announced the  Smarter Computing  framework to support Smarter Planet.Among the various components of the Smarter Computing foundation, cloud computing is a critical piece. In 2012, Dr. Biju John and Dr. Souheil Khaddaj describe the cloud as a  virtualized,  semantic source of information: Cloud computing is a universal collection of data which extends over the i nternet in the form of resources (such as information hardware, various platforms, services etc. ) and forms individual units within the virtualization environment. Held together by infrastructure providers, service providers and the consumer, then it is semantically accessed by various users.Cloud computing shares characteristics with: * Autonomic computing  - Computer systems capable of  self-management. * Client–server model  -   Client–server computing  refers broadly to any  distributed application that distinguishes between service providers (servers) and service requesters (clients). * Grid computing  - A form of  distributed  and  parallel computing, whereby a super and virtual computer is composed of a  cluster  of networked,  loosely coupled  computers acting in concert to perform very large tasks. * Mainframe computer  - Powerful computers used mainly by large organizations for critical applications, typically bulk data proce ssing such as  census, industry and consumer statistics, police and secret intelligence services,  enterprise resource planning, and financial  transaction processing. * Utility computing  - The packaging of  computing resources, such as computation and storage, as a metered service similar to a traditional public utility, such as electricity. * Peer-to-peer  - Distributed architecture without the need for central coordination, with participants being at the same time both suppliers and consumers of resources (in contrast to the traditional client–server model). * Cloud gaming   Also called On-demand gaming is a way of delivering to games to computers. The gaming data will be stored in the providers server, so that gaming will be independent of client computers used to play the game. The attributes of Cloud Networking are: Scalable:  Cloud Networks scale to thousands of nodes and provide a non-blocking fabric across the entire cloud. * Low Latency: Latency i s key to improving application performance. The network needs to provide ultra-low latency in a large-scale environment. * Guaranteed Delivery: The cloud must provide predictable and reliable performance to a large number services, including HPC applications, web, video and data. * Extensible Management: Cloud Networks cross all traditional boundaries between servers, enterprise networks, and service provider networks.They need to be managed in a  hybrid  environment, often with customizations that are unique to that individual deployment. The management of the network needs to be extensible and customizable to allow such applications. * Self-Healing Resiliency: With larger scale, networks become much more critical and faults need to be contained and healed automatically. Arista Networks offers a unique Cloud Networking Platform that meet the above requirements. Please see our Products amp; Services sections for more information.In early 2008,  Eucalyptus  became the first o pen-source, AWS API-compatible platform for deploying private clouds. In early 2008,  Open Nebula, enhanced in the RESERVOIR European Commission-funded project, became the first open-source software for deploying private and hybrid clouds, and for the federation of clouds. [19]  In the same year, efforts were focused on providing quality of service  guarantees (as required by real-time interactive applications) to cloud-based infrastructures, in the framework of the IRMOS European Commission-funded project, resulting to a real-time cloud environment.By mid-2008, Gartner saw an opportunity for cloud computing to shape the relationship among consumers of IT services, those who use IT services and those who sell them  and observed that organizations are switching from company-owned hardware and software assets to per-use service-based models so that the projected shift to computing will result in dramatic growth in IT products in some areas and significant reductions in other a reas. On March 1, 2011, IBM announced the  Smarter Computing framework to support Smarter Planet.Among the various components of the Smarter Computing foundation, cloud computing is a critical piece. In 2012, Dr. Biju John and Dr. Souheil Khaddaj incorporated the semantic term into the cloud Cloud computing is a universal collection of data which extends over the internet in the form of resources (such as information hardware, various platforms, services etc. ) and forms individual units within the virtualization environment. Held together by infrastructure providers, service providers and the consumer, then it is semantically accessed by various users. (CLUSE 2012), Bangalore, April 2012 Cloud computing is all the rage. Its become the phrase du jour, says Gartner senior analyst Ben Pring, echoing many of his peers. The problem is that (as with Web 2. 0) everyone seems to have a different definition. As a metaphor for the Internet, the cloud is a familiar cliche, but when combin ed with computing, the meaning gets bigger and fuzzier. Some analysts and vendors define cloud computing narrowly as an updated version of utility computing: basically  virtual servers  available over the Internet. Others go very broad, arguing anything you consume outside the firewall is in the cloud, including conventional  outsourcing.Cloud computing comes into focus only when you think about what IT always needs: a way to increase capacity or add capabilities on the fly without investing in new infrastructure,  training  new personnel, or licensing new software. Cloud computing encompasses any subscription-based or pay-per-use service that, in real time over the Internet, extends ITs existing capabilities. Cloud computing is at an early stage, with a motley crew of providers large and small delivering a slew of cloud-based services, from full-blown applications to storage services to spam filtering.Yes, utility-style infrastructure providers are part of the mix, but so are  SaaS (software as a service)  providers such as Salesforce. com. Today, for the most part, IT must plug into cloud-based services individually, but cloud computing aggregators and integrators are already emerging. InfoWorld talked to dozens of vendors, analysts, and IT customers to tease out the various components of cloud computing. Based on those discussions, heres a rough breakdown of what cloud computing is all about: 1. SaaSThis type of cloud computing delivers a single application through the browser to thousands of customers using a multitenant architecture. On the customer side, it means no upfront investment in servers or software licensing; on the provider side, with just one app to maintain, costs are low compared to conventional hosting. Salesforce. com is by far the best-known example among enterprise applications, but SaaS is also common for HR apps and has even worked its way up the food chain to  ERP, with players such as Workday. And who could have predi cted the sudden rise of SaaS  desktop applications, such as Google Apps and Zoho Office? . Utility computing The idea is not new, but this form of cloud computing is getting new life from Amazon. com, Sun, IBM, and others who now offer storage and virtual servers that IT can access on demand. Early enterprise adopters mainly use utility computing for supplemental, non-mission-critical needs, but one day, they may replace parts of the datacenter. Other providers offer solutions that help IT create virtual datacenters from commodity servers, such as 3Teras AppLogic and Cohesive Flexible Technologies Elastic Server on Demand.Liquid Computings LiquidQ offers similar capabilities, enabling IT to stitch together memory, I/O, storage, and computational capacity as a virtualized  resource pool available over the network. 3. Web services in the cloud Closely related to SaaS, Web service providers offer APIs that enable developers to exploit functionality over the Internet, rather than de livering full-blown applications. They range from providers offering discrete business services such as Strike Iron and Xignite to the full range of APIs offered by Google Maps, ADP payroll processing, the U.S. Postal Service, Bloomberg, and even conventional credit  card processing  services. 4. Platform as a service Another SaaS variation, this form of cloud computing delivers development environments as a service. You build your own applications that run on the providers infrastructure and are delivered to your users via the Internet from the providers servers. Like Legos, these services are constrained by the vendors design and capabilities, so you dont get complete freedom, but you do get predictability and pre-integration.Prime examples include Salesforce. coms  Force. com,Coghead  and the new  Google App Engine. For extremely lightweight development, cloud-basedmashup platforms  abound, such as  Yahoo Pipes  or Dapper. net. 5. MSP (managed service providers) One of the oldest forms of cloud computing, a managed service is basically an application exposed to IT rather than to end-users, such as a virus scanning service for e-mail or an application monitoring service (which Mercury, among others, provides).Managed security services delivered by SecureWorks, IBM, and Verizon fall into this category, as do such cloud-based anti-spam services as Postini, recently acquired by Google. Other offerings include desktop management services, such as those offered by CenterBeam or Everdream. 6. Service commerce platforms A  hybrid  of SaaS and MSP, this cloud computing service offers a service hub that users interact with. Theyre most common in trading environments, such as expense management systems that allow users to order travel or secretarial services from a common platform that then coordinates the ervice delivery and pricing within the specifications set by the user. Think of it as an automated service bureau. Well-known examples include Rearden Commerce and Ariba. 7. Internet integration The integration of cloud-based services is in its early days. OpSource, which mainly concerns itself with serving SaaS providers, recently introduced the OpSource Services Bus, which employs in-the-cloud integration technology from a little startup called Boomi.SaaS provider Workday recently acquired another player in this space, CapeClear, an ESB (enterprise service bus) provider that was edging toward b-to-b integration. Way ahead of its time, Grand Central which wanted to be a universal bus in the cloud to connect SaaS providers and provide integrated solutions to customers flamed out in 2005. Today, with such cloud-based interconnection seldom in evidence, cloud computing might be more accurately described as sky computing, with many isolated clouds of services which IT customers must plug into individually.On the other hand, as virtualization and SOA permeate the enterprise, the idea of loosely coupled services running on a n agile, scalable infrastructure should eventually make every enterprise a node in the cloud. Its a long-running trend with a far-out horizon. But among big metatrends, cloud computing is the hardest one to argue with in the long term. aristanetworks. com/en/solutions http://en. wikipedia. org/wiki/Cloud_computing infoworld. com/d/cloud-computing/what-cloud-computing-really-means-031? page=0,1