近年來雲端運算已成為全球資訊與通訊科技產業重要的發展趨勢和議題，台灣過去在資通訊產業價值鏈中一直扮演著硬體製造代工的重要角色，是全球資通訊產業發展分工與資源整合不可或缺的重要一環。雲端運算將藉由各種類型的端末設備(如個人電腦、智慧手機及平板電腦等裝置)，透過網路連接遠端的資料中心，連結整合並使用各項資訊服務。未來企業機房建置與伺服器，甚至個人電腦的升級將不再具有如今日的大量需求。原本毛利率就已不高的台灣資通訊代工業，勢必面臨訂單減少、業績衰退的衝擊。本研究將就台灣資通訊業者，在雲端運算產業群聚效應尚未形成之前，如何在既有政府政策、網通基礎建設下，就企業在產業相對位置，採取最適之優勢競爭策略，來做為進入及因應雲端運算發展趨勢之企業策略做探討。 / Clouding computing has recently become a developing trend and key concern in IT and telecommunication sectors worldwide. Taiwan enterprises, used to be important hardware manufactures via OEM/ODM business model in these value chains, continue to be critical in the all segments of worldwide resources integration. Cloud computing will take advantage of all terminal devices, including PC, smart phone and tablet computer, to access all information in the cyber space via the integrated service of distant data centers. The expected demands for the setup of IT rooms and upgrade of servers and PC are decreasing. Accordingly, Taiwan IT OEM/ODM companies with thin gross margin will suffer from the impact of reducing orders and declining profit. This research studies the strategies of all Taiwanese ICT firms in different subsectors, before the cluster formation of related participants, to join in and deal with the development of cloud computing with the government’s current policies and infrastructure.

Copies of author's previously published articles inserted. / Bibliography: p. 223-244. / xx, 244 p. : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Physics and Mathematical Physics, 1994

Thesis (Ph. D.)--University of Washington, 2007. / Vita. Includes bibliographical references (p. 117-126).

<p>For multispectral Remote Sensing (RS) image analysis, a big problem is that original dataalways include Clouds-Interference (CI). Especially in the bad weather conditions, the CI is evidentin RS image. So during the pre-processing of RS image, the CI should be reduced as much aspossible. In this paper, reducing CI is researched as the central problem, so that much Ground-Objects Feature (GOF) can be obtained. An analysis about the clouds reflection in differentSpectral-Bands (SBs) was done based on optical theory and early researches. Moreover, therelationships between clouds reflection and ground-objects reflection are presented to understandwhat the Digital Number (DN) represented in each SB, and to reduce the impact of CI the Same DNSpectral Matching Method (SDN-SMM) based on the multispectral application is applied. Finally,two cases are tested using Matlab Programme to indicate the rationality and practicability of SDNSMM.About SDN-SMM, some advantages and disadvantages are concluded through discussion onfinal results. The method can be used in any kind of multispectral sensors image with simplecalculation, while, the original data of clouds-free region will not be changed. However, the qualityof CI reduction depends on the precision of clouds identification and the SB which is used forspectral position relationship creating. In the end of this paper, the improvement is also presentedfor the future work.</p>

A field-deployable instrument has been developed that isolates from an ambient aerosol population only those particles that have critical supersaturations, Sc, within a narrow, user-specified, range. This Differential Critical Supersaturation Separator (DScS) is designed to supply one or more particle size and/or composition analyzers to permit the direct examination of the factors that influence the activation properties of ambient aerosols. The DScS consists of two coupled parallel plate continuous flow thermal gradient diffusion cloud chambers housed within a single enclosure. Descriptions of instrument operation, construction and calibration data collected, when pure ammonium sulfate aerosols were injected into the DScS for operation at 0.15%< Sc<0.175%, 0.30%< Sc<0.35%, and 0.60% < Sc<0.70%, are included. Following instrument development, the DScS was deployed during March 2006 for the Megacities Impact on Regional And Global Environment (MIRAGE) field campaign in Mexico City, Mexico. Throughout the MIRAGE field campaign a Differential Mobility Analyzer/Tandem Differential Mobility Analyzer (DMA/TDMA) system measured aerosol size distributions and size-resolved hygroscopicity of DScS separated aerosol. The dry diameter (Dp*) of particles sampled in the TDMA system as well as the known Sc prescribed in the DScS were combined in a modified version of Köhler Theory to make predictions of particle hygroscopicity. These predictions frequently overestimated the measurements. Further analysis of DScS separated aerosols compares the known particle Sc to a predicted particle Sc, providing insight into particle activation efficiency. Overall, the sampled aerosol exhibited properties that indicate they were more efficient at activation than Köhler Theory would predict.

The Bok globule B335 is a small molecular cloud in the solar neighbourhood near the galactic plane. The aim for this three-paper-study is to construct and analyze the extinction for this globule. The method we apply is to use the light from field stars behind the cloud in broadband filters ranging from UV to the mid-infrared. We have observations performed at the ESO telescopes at La Silla and Paranal as well as at the Nordic 2.5 m telescope at La Palma. Together with images and spectra from 2MASS-, ISO- and Spitzer-archives we are able to cover the wavelength range from 0.35 to 24 μm. An important tool to analyze these observations results in order to get the extinction is the grid of synthetic stellar atmospheric spectra provided by Hauschildt (2005). The extinction so received is a result in itself. From the analysis of the extinction wavelength dependence we derive properties of the dust, especially its composition and grain size distribution. By modeling the grain size distribution we are able to find the extinction from the reddening of the stars. We find that the extinction in the optical wavelength 0.35 to 2 μm range nicely follows the functional form described by Cardelli et al. (1989). Our result from the wavelength range redward of 2 μm show an extinction dependent on the part of the cloud examined. For the rim of the cloud we get an extinction similar to that reported earlier for the diffuse interstellar medium. From the central parts of the cloud, however, a higher extinction was found. Our grain size model contains a carbonaceous particle distribution and a silicate one. The result can be explained by depletion of carbon onto carbonaceous grains and also by carbon onto all grains including the silicates. Our modeling of the extinction and our classification of the background stars allow us to - determine the distance to the globule - estimate the gas column density ratio - estimate the mass of globule - get a handle on the dust conversion processes through the grain size distribution   From the water- and CO-ice spectra we are able to estimate the ice column densities. We find similar ice column densities for the two ices. The estimates differ, when calculated from band strengths or from Lorenz-Mie calculations of ice mantles on the grain size distribution, by a factor of two.

Through an empirical comparison between U.S and Canadian copyright law, this paper examines how lawmakers in both countries should deal with copyright liability issues in the cloud while maintaining a proper balance between content owners and Internet intermediaries. This paper proposes to answer this question throughout the study of the liability of Internet intermediaries. Drawing on copyright statutory provisions, case law and scholars articles, this paper examines the issue of online piracy, defines cloud computing and identifies the copyright liability issues posed by the cloud. It then compares U.S and Canadian copyright laws and discusses the new reform proposed in both countries in relation with the liability of Internet intermediaries. It concludes that new statutory reform might not be necessary except for clarification purposes. Indeed current copyright laws deal efficiently with copyright liability issues in the cloud while maintaining a proper balance between content owners and Internet intermediaries.

Service Orientation (SO) and grid computing are two computing paradigms that when put together using Internet technologies promise to provide a scalable yet flexible computing platform for a diverse set of distributed computing applications. This practice gives rise to the notion of a computing cloud that addresses some previous limitations of interoperability, resource sharing and utilization within distributed computing. <p>In such a Service Oriented Computing Cloud (SOCC), applications are formed by composing a set of services together. In addition, hierarchical service layers are also possible where general purpose services at lower layers are composed to deliver more domain specific services at the higher layer. In general an SOCC is a horizontally scalable computing platform that offers its resources as services in a standardized fashion. <p>Workflow based applications are a suitable target for SOCC where workflow tasks are executed via service calls within the cloud. One or more workflows can be deployed over an SOCC and their execution requires scheduling of services to workflow tasks as the task become ready following their interdependencies. <p>In this thesis heuristics based scheduling policies are evaluated for scheduling workflows over a collection of services offered by the SOCC. Various execution scenarios and workflow characteristics are considered to understand the implication of the heuristic based workflow scheduling.

The types of content being transferred over the Internet are getting richer and larger; the number of social media channels users have to sift through to publish and find content is also increasing. Average users are uploading and downloading richer and larger media files as they feel the urge to share their content with others. This work explores a novel process for publishing personal media files on social applications, where the publisher retains control over the media, while the implementation follows the principles of the WWW. The Personal URI Channel (PURIC) system is introduced as a process that can take place along side social applications like email clients, social networking sites (i.e. Twitter and Facebook), and emerging decentralized social networking sites. The PURIC system is a media resource link management tool used for publishing and maintaining the links published on social applications. This work explores the feasibility, benefits, and drawbacks of the PURIC system. It reveals the modularity and scalability of the system, and how it compliments social applications without placing too much load on network traffic and server-side cpu processing.

Cloud computing enables data centres to provide resource sharing across multiple tenants. This sharing, however, usually comes at a cost in the form of reduced isolation between tenants, which can lead to inconsistent and unpredictable performance. This variability in performance becomes an impediment for clients whose services rely on consistent, responsive performance in cloud environments. The problem is exacerbated for applications that rely on cloud storage systems as performance in these systems is a ffected by disk access times, which often dominate overall request service times for these types of data services. In this thesis we introduce MicroFuge, a new distributed caching and scheduling middleware that provides performance isolation for cloud storage systems. To provide performance isolation, MicroFuge's cache eviction policy is tenant and deadline-aware, which enables the provision of isolation to tenants and ensures that data for queries with more urgent deadlines, which are most likely to be a ffected by competing requests, are less likely to be evicted than data for other queries. MicroFuge also provides simplifi ed, intelligent scheduling in addition to request admission control whose performance model of the underlying storage system will reject requests with deadlines that are unlikely to be satisfi ed. The middleware approach of MicroFuge makes it unique among other systems which provide performance isolation in cloud storage systems. Rather than providing performance isolation for some particular cloud storage system, MicroFuge can be deployed on top of any already deployed storage system without modifying it. Keeping in mind the wide spectrum of cloud storage systems available today, such an approach make MicroFuge very adoptable. In this thesis, we show that MicroFuge can provide signifi cantly better performance isolation between tenants with di fferent latency requirements than Memcached, and with admission control enabled, can ensure that more than certain percentage of requests meet their deadlines.