Hands-On Xen

Author(s):  
Khaleel Ahmad ◽  
Masroor Ansari ◽  
Afsar Kamal

Xen is an open source virtualization framework in distributed system based on rapid elasticity on broad network access. It is a cost-effective platform for resource pooling and allows easy access to run any code any time from everywhere by any user. It is a hypervisor using a microkernel design, provides services that allow multiple operating systems to execute on the same computer concurrently. In other words, the hypervisor was made accessible to the world directly from any location, anticipating a fully virtualized cloud base environment, which is turned into cloud computing.

2015 ◽  
pp. 2068-2076
Author(s):  
James R. Stachowiak

Computer-based Assistive Technology (AT) has had a powerful effect on people with disabilities in the areas of reading, writing, communicating, and accessing information. One of the roadblocks for use has always been the expense of AT. Advancements in computing and mobile technology, however, are making some technology more readily available, accessible, and cost effective for people with disabilities. Computer operating systems, for example, now contain features to magnify screens for reading and in the entering of text. The mobile movement of smartphones, e-readers, and tablets has also been changing the way people with disabilities access information. The capabilities of these devices combined with the immediate availability, affordability, and ease of use, has been making the world more accessible for people with disabilities, and with mobile devices increasingly becoming a necessity for most, this trend is anticipated to only continue.


Author(s):  
Archit Gupta

Abstract: Software Engineering has grown and developed from the 1960’s till now a lot as our knowledge and understanding of software is increasing day-by-day due to which software is becoming increasingly reliable and cost effective. Previous research was not able to express clearly how software engineering transitioned, how new technologies and services for software came to be known and were started using in the world of software engineering, decade or year wise. I use data from different websites and research papers to tell how software engineering has evolved along with the years with details about what happened in particular years, with respect to the corresponding decades. There are also details about manifestos and the developers of computer languages. The findings indicate that the software engineering field is vast and is still far from being fully developed, in a world where we have hands on every technology possible and hence new software’s and services are coming out on a regular basis now.


Author(s):  
R. Mohanasundaram ◽  
A. Jayanthiladevi ◽  
Keerthana G.

Cloud computing suggests that the applications conveyed as services over the internet and frameworks programming in the server that give various services and offers in “pay as you go” trend which means pay only for what you use. The information and services are managed as software as a service (SaaS). Some sellers utilize terms, for example, IaaS (infrastructure as a service) and PaaS (platform as a service). The purpose of cloud computing is quickly expanding in everyday life. Today the use of cloud computing is widespread to the point that it is being utilized even in the medicinal services industry. As the development of cloud computing in healthcare is happening at a fast rate, we can expect a noteworthy piece of the healthcare administrations to move onto the Cloud and along these lines more focus is laid on giving cost-effective and efficient services to the general population all around the world. Cloud these days are turning into the new building pieces of significant organizations spread the world over. They offer assistance in servicing to offer different frameworks. Cloud computing has enhanced its technique and technologies in a better way to provide better services. Existing e-healthcare has many difficulties from advancement to usage. In this chapter, the authors discuss how cloud computing is utilized and the services provided by the Cloud and their models and its infrastructure.


Author(s):  
Guru Prasad Bhandari ◽  
Ratneshwer Gupta

Edge computing is a technique of optimizing cloud computing systems by performing data processing at the edge of the network, near the source of the data in the systems. And, cloud computing is a service that delivers on-demand self-service, broad network access, resource pooling, rapid elasticity or expansion, which is trending in today's technology-driven world. With the advantage of flexibility, storage, sharing, and easy accessibility, cloud is being used by major players in IT (information technology). This chapter highlights cloud/edge computing architecture and its current issues and challenges from technological and organizational aspects. A brief introduction of edge computing architecture with similar technologies along with its service models is discussed. A few counterexamples of cloud computing architecture are showed. Organizational aspects of cloud computing architecture, as well as IBM and Oracle reference cloud architecture, are briefly presented. Some emerging issues and challenges associated with cloud/edge computing on its utilization are also elaborated.


Author(s):  
Mohammed Soud Al Rawahi ◽  
Shaik Asif Hussain

Small and medium sized enterprises (SMEs) assure economic growth in Oman. Generally, many SMEs are struggling to survive in an ongoing global recession and are often reluctant to use research results and new technologies for business and learning. Cloud Computing offers many opportunities and could help companies to improve their business and use technology more efficiently. Small and medium sized enterprises (SMEs) assure economic growth in Oman, but the last financial crisis and the economic recession have hit SMEs hard in Omani SMEe and some of them have difficulties to survive and less resource to invest in new technologies. Cloud Computing offers many opportunities and can help companies to improve their business and use technology more efficiently. Some features i.e. on-demand services, broad network access, resource pooling, rapid elasticity and measured service distinguish Cloud from other computer networking models. According to the analyst firm IDC in 2012 more than 1.7 million cloud computing jobs have remained unoccupied and the trend should lead to more than seven million cloud-related vacancies worldwide. In this research, cloud computing advantages and disadvantages of cloud technology are reflected in the context of Omani SME sector. The project IN-Cloud is analyzed considering Omani SME project to understand the effectiveness of efforts in this direction. The general objective of the project IN-CLOUD are to study the framework of use of cloud computing in SME sector. Survey results of Cloud Computing and advantages for SMEs are presented in paper within the context of Omani SME sector. The results show that 70% of SMEs have adopted or used some of features of Cloud services but they indicated the need n for awareness, safety and training, qualified professional staff in this field.


Author(s):  
Chhavi Chaturvedi ◽  
Brij B. Gupta

The applications and software using cloud computing as a base have significantly increased, and cloud computing is nowadays developed as a scalable and cost-effective technique. It facilitates many features in the computing environment like resource pooling, multi-tenancy, virtualization, etc. The cloud environment has led to the proliferation of various attacks that affect the security of applications and software developed by using cloud services and also cloud user's data. Data security is the main concern in cloud computing because it is stored in data centers provided by service providers. The chapter presents the background history of cloud computing and different challenges faced by the cloud environment, especially in terms of providing security for customer data stored in data centers. Authors also discuss the case studies on Microsoft Azure (i.e. a cloud platform) and Aneka (i.e. a cloud development and management platform).


Author(s):  
James R. Stachowiak

Computer-based Assistive Technology (AT) has had a powerful effect on people with disabilities in the areas of reading, writing, communicating, and accessing information. One of the roadblocks for use has always been the expense of AT. Advancements in computing and mobile technology, however, are making some technology more readily available, accessible, and cost effective for people with disabilities. Computer operating systems, for example, now contain features to magnify screens for reading and in the entering of text. The mobile movement of smartphones, e-readers, and tablets has also been changing the way people with disabilities access information. The capabilities of these devices combined with the immediate availability, affordability, and ease of use, has been making the world more accessible for people with disabilities, and with mobile devices increasingly becoming a necessity for most, this trend is anticipated to only continue.


2018 ◽  
Vol 7 (4) ◽  
pp. 2241
Author(s):  
Yogesh Madhukar Ghorpade ◽  
Prof. Dr. R. Kamatchi

By in 2021, more than half of global enterprises already using cloud today adopt an all in cloud strategy [6]. Is today the world of modern infrastructure using digital transformation results cost effective approach? If yes, than how it has to be transformed and if No, than what are the differences between approaches applied. The cost effective methodology and its implementation is primary approach towards cost computing to bring effectiveness with the proper requirements and provides proper solution.The productive learning with different approach is the vital requirement for today’s Cloud infrastructure building from student’s perspective needs to be understood [13 - 15]. The paper aims in building and implementing the Lab infrastructure using developed model for cost effective approach by comparing On-premise vendors with cloud vendors. The technology that is used for the experiment are open-source and Proprietary. The paper results with the best approach used in cost computing methodology providing best solution for the given requirement in academic environment. 


Cloud computing is being envisioned to be the computing paradigm of the next generation primarily for its advantages of on-demand services, risk transference, resource pooling that is independent of location and ubiquitous network access. Service quality is allocated using various resources in the scheduling process. The deadline refers to the time period from task submission until task completion. An algorithm that has good scheduling attempts at keeping the task executed inside the constraint of the deadline. The Genetic Algorithm (GA) is a common metaheuristic that is used often in literature for procuring solutions that are either optimal or near-optimal. The Invasive Weed Optimization (IWO) is an evolutionary algorithm that is population-based with certain interesting specifications like creations of offspring that are based on the levels of fitness of the parents which increases the size of the population and generates new population by making use of the best among parents and the best among off-springs. The Greedy Algorithms will construct an object that is globally best by means of continuously choosing the option that is locally the best. In this work, a hybrid GA with the Greedy Algorithm and a Hybrid IWO with the Greedy Algorithm that has been proposed for the energy and the deadline-aware scheduling in cloud computing.


2021 ◽  
pp. 3-26
Author(s):  
W Kuan Hon ◽  
Christopher Millard ◽  
Jatinder Singh

This chapter defines what cloud computing is. The National Institute of Standards and Technology (NIST) has set out a commonly used definition of cloud computing. Under this definition, a 'computing capacity' will qualify as a 'cloud service' if it has the following five characteristics: on-demand self-service; broad network access; resource pooling; rapid elasticity; and measured service. In terms of business models, cloud computing resources are typically offered 'as a Service'. Traditionally, cloud computing services were typically described as falling into one or more of the following three service categories or models: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). The chapter then looks at the key concepts of the cloud supply chain.


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