TechNews digests: Jan - Nov 2009

TechNews is a technology, news and analysis service aimed at anyone in the education sector keen to stay informed about technology developments, trends and issues. TechNews focuses on emerging technologies and other technology news. TechNews service : digests september 2004 till May 2010 Analysis pieces and News combined publish every 2 to 3 month

Cloudifying Desktops – A Taxonomy for Desktop Virtualization

Compared to traditional desktops, the implementation of desktop virtualization can leverage cost reductions and enable desktop access via mobile devices. Consequently, researchers and practitioners increasingly focus on virtualized desktops and Desktop as a Service (DaaS). However, a consistent definition for these technologies and the related delivery models does not exist yet. Therefore, we conducted a literature analysis which revealed that optimized resource allocation and performant DaaS infrastructures are the primary topics in research. Afterward, we developed a taxonomy to categorize extant virtual desktop delivery models and propose a holistic definition as theoretical framework for DaaS

Creating Virtual Desktop Infrastructure Using Xen Desktop 7.1 and Vsphere 5.1

Technology now demands secure centralized management of their services. Desktop virtualization allows isolation of the operating system and desktop using Xen Desktop. Now the users of any organization could connect to their own desktops from anywhere and from any client device. Xen Desktop delivers windows applications and desktops as secure mobile service and is capable of delivering full desktops or the applications that are required. It offers storefront software which allows the users to self-service what they wanted. This paper solely focuses on building a Virtual desktop infrastructure, a cloud-ready Desktop as a Service platform using which a company can reduce the cost, time for management and patching the desktops along with independence for applications. Keywords: desktop virtualization, virtual desktop infrastructur

Design and Implementation of Desktop Cloud and its Management Platform Based on KVM

随着信息化的发展，传统PC所带来的信息资产风险、故障高、管理难、人机绑定不灵活以及能耗高等问题日趋严峻。用户更倾向于能保证数据更安全，可以在任何时间任何地点通过移动设备访问的桌面，同时桌面要保持高性能并且能随业务发展实时更新升级，并且更符合节能减排的环保要求。而桌面云就是一种可以满足上述要求的一种方案。近几年随着IT基础硬件的发展，出现了更高性能和更低成本的硬件，同时虚拟化的相关技术在各个领域的不断发展应用，为桌面云的普及奠定了良好的基础。不仅国际大厂商如Citrix、VMWare、微软等纷纷推出了相应的桌面云解决方案，国内的华为、深信服、青云等也纷纷推出了国产化方案。而基于开源平台KVM的桌...With the development of information technology, the problems of information assets risk, high fault management, inflexible man-machine binding and high energy consumption caused by traditional PC are becoming more and more serious. Users tend to ensure more safety data, can at any time anywhere through mobile devices to access the desktop, and the desktop to maintain high performance and business ...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201523002

Automatic fine-grained area detection for thin client systems

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Semantic multimedia remote display for mobile thin clients

Current remote display technologies for mobile thin clients convert practically all types of graphical content into sequences of images rendered by the client. Consequently, important information concerning the content semantics is lost. The present paper goes beyond this bottleneck by developing a semantic multimedia remote display. The principle consists of representing the graphical content as a real-time interactive multimedia scene graph. The underlying architecture features novel components for scene-graph creation and management, as well as for user interactivity handling. The experimental setup considers the Linux X windows system and BiFS/LASeR multimedia scene technologies on the server and client sides, respectively. The implemented solution was benchmarked against currently deployed solutions (VNC and Microsoft-RDP), by considering text editing and WWW browsing applications. The quantitative assessments demonstrate: (1) visual quality expressed by seven objective metrics, e.g., PSNR values between 30 and 42 dB or SSIM values larger than 0.9999; (2) downlink bandwidth gain factors ranging from 2 to 60; (3) real-time user event management expressed by network round-trip time reduction by factors of 4-6 and by uplink bandwidth gain factors from 3 to 10; (4) feasible CPU activity, larger than in the RDP case but reduced by a factor of 1.5 with respect to the VNC-HEXTILE

A Review of Virtualisation and Cloud Computing in Higher Education

Virtualisation in the classroom provides students with the impression that they are interacting with applications, services, and files which are stored locally, when in fact the applications, services, and files may be stored on a server off site, or at an alternative location on site. “Virtualization is a technology that permits the abstraction of the software from one computer and its easy deployment in another one, which may house additional virtualized machines” (Martín, Marrero, Urbano, Barra, & Moreiro, 2011, p. 349). Server virtualisation is when an Information Technology manager or computer administrator partitions a server to create several instances of virtual servers, thereby multiplying the working capacity of the physical server

A private cloud infrastructure for desktop virtualization & application delivery based on Xen

Todays computing environment requires IT departments to confront more PC management challenges than they did just a few years ago. With the increment in the complexity of software, more computing power is required for their execution resulting in cost and maintenance to surge up. Additional challenges stem from the need to access applications and data anywhere and from any device. To reduce maintenance, cost and time, desktop virtualization and application delivery come handy. Desktop virtualization prospects to offer a new, cost efficient paradigm shift to cater the demand for resources while amplifying the return on investment. Additionally, desktop virtualization can provide more dynamic streamlined management by isolating the elements of the traditional desktop computing stack. So, virtualized desktop is the key to progress towards a pervasive computing in cloud computing era. As the pace of cloud adoption accelerates, a high degree of flexibility will be the clue to architecting environments that provide for highly secure and available application delivery. This thesis describes the design, installation and deployment of a private cloud using Xen open sourced software solutions within the organization. A private cloud is setup in a virtualized environment of VMware hypervisor for virtual desktop delivery and application streaming to remote users on the LAN through a browser interface over a secured connection. The users of this service would be able to remotely login and access the virtual environment using the given authorized id over the browser

Cloud Ready Desktop Virtualization Solution

Cloud computing is a relatively new set of technologies that can allow businesses to easily scale their computing resources and improve responsiveness to customer needs. This has held true for application, server, and desktop virtualization. Desktop virtualization in particular provides a means to solve many of the traditional challenges associated with deploying and maintaining large business workstation environments, including centralized data management, rapid deployment of workstations, and centralized updating. VMware, a longtime leader in the virtualization sector, offers a desktop virtualization platform that is widely considered to be the best in class. This paper explores the process of building a desktop virtualization solution using VMware View, a cloud-ready desktop virtualization solution from VMware