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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
181

Case Study of Access to Higher Education Through Technology in the Resource-Poor Country of Haiti

Medastin, Jean Jacques 01 January 2016 (has links)
According to the Federal Ministry for Economic Cooperation and Development (2012-2013), access to higher education is limited in most of the developing countries due to inadequate budgets and lack of schools and teaching staff. The use of educational technology could help bridge the gap, but research has only explored the use of available technologies to enhance learning where higher education is already accessible. The purpose of this case study was to investigate the use of one-to-many videoconferencing as an education access tool for high school seniors seeking higher education in the most devastated areas of Haiti. The theoretical framework for this study is based on Bandura's social learning theory, activity theory, and constructivist epistemology. This study attempts to explore the feasibility of using one-to-many videoconferencing learning to enhance access to education in Haiti. The study also analyzes the experiences of various sets of participants. The data were drawn from 13 interviews involving the school principal, the school's technology expert, 10 students, and one instructor corroborated by hours spent observing the same participants engaged in classroom activities via videoconferencing. The participants were interviewed on their experiences with the new delivery method proposed and utilized in the study. The data from this study suggest that by preserving the features of the familiar classroom model, videoconferencing could be successfully utilized to compensate for the lack of other facilities for higher education. The data was coded and analyzed using the NVivo data analysis software. The study will allow Haitian professionals living outside of the country to affect change in access to higher learning in Haiti.
182

台灣發展休閒農場可行性之研究-以中部酪農村休閒農場為例 / The Feasibility Of The Tourism Farm In Taiwan

游誌明, You, Jyh Ming Unknown Date (has links)
這篇論文係以個案研究的方式探討台灣發展休閒農場之可行性,論文的主要內容在嘗試回答下列四個問題:一、為什麼要發展休閒農場?二、目前發展休閒農場的現況與問題為何?三、發展休閒農場的可行性為何?未來應如何發展休閒農場?本研究的重要研究結果與建議如下:   一、發展休閒農業是未來值得繼續嘗試的方向。   二、現行發展休閒農場的方式,不僅無法落實發展休閒農場的理念,也難以達到預期的目標,而且投資報酬率低、風險大,顯示其可行性不高。   三、問題之癥結,乃在於限制休閒農場面積必須達五十公頃以上不當所致。因此未來應廢除「休閒農業區設置管理辦法」第五條關於休閒農場面積之限制。   最後,作者於此提醒讀者於閱讀本文時,請注意以下幾點:   一、文中所指的休閒農場係指五十公頃以上的、大型的農場。   二、判斷可行性的標準是依本研究第一章的定義。   三、部分結論係依個案研究結果。
183

Simulation of Switched Ethernet

Kumar Nachegari, Kishore, Babu Eadi, Suresh January 2006 (has links)
<p>Switched Ethernet is an Ethernet LAN that uses switches to connect individual nodes. </p><p>This is popular because of its effective and convenient way of extending the bandwidth of </p><p>existing Ethernets. Switched Ethernet is being considered by the industry community because </p><p>of its open standardization, cost effectiveness, and the support for higher data rates up to </p><p>10Gbps. Even though many special-purposed solutions were proposed to support time </p><p>constrained communication over Switched Ethernet, still there were some doubts about the </p><p>real time handling capability of Switched Ethernet. To achieve reliable transmission </p><p>guarantees for real time traffic over Switched Ethernet, it is important to measure the </p><p>performance of Switched Ethernet networks for real time communication. In this thesis work </p><p>we have observed the average end-to-end packet delay for real time traffic over a Switched </p><p>Ethernet by simulation, which is very much essential for real time communication in </p><p>industrial applications, where the communication is time-deterministic. In our thesis we used </p><p>FCFS priority queuing in both the source nodes and switch. In this thesis we also discussed </p><p>about the feasibility analysis for fixed sized frames and some traffic handling methods. We </p><p>used 100mbp/s single full duplex Ethernet switch for our simulation. Finally simulation </p><p>analysis and simulation results are discussed. Our purpose of simulation of Switched Ethernet </p><p>networks is of good importance for the real time industrial applications.</p>
184

Suggestions for Improvements on Shanghai’s Entrepreneurial Environment : A Comparative Study Based on the Different Perspectives of Experts and Undergraduates

Feng, Qiao, Liu, Jianchao January 2009 (has links)
<p>This study focuses on undergraduates in Shanghai and aims to generate some practical implications on how to improve the entrepreneurial environment by enhancing undergraduates’ entrepreneurial intentions. The authors initiated an analytical model with support from the GEM conceptual model and Krueger’s intention model (2000) to carry on an investigation among local undergraduates. The data reflects an actuality of undergraduates’ entrepreneurial intention. On the other hand, by the correlation analysis, undergraduates’ preferences upon different aspects of entrepreneurial environment are filtered out. Finally, practical implications are given through two aspects. One is divisions of respondents by their different grades of entrepreneurial intentions; the preferences from the higher intentioned group will firstly be suggested to improve. The other one is based on the comparison between undergraduates’ valuation and experts’ measurement on the entrepreneurial environment.</p><p>In conclusion, the study reflects that the analytical model is applicable to undergraduates in Shanghai. To enhance undergraduates’ entrepreneurial intention, it is highly recommended by the authors to improve entrepreneurial environment through more attention to the feasibility of technology transfer, sufficient government programs for new firms, the effectiveness of technological region, and government projects.</p>
185

The Use of Landweber Algorithm in Image Reconstruction

Nikazad, Touraj January 2007 (has links)
Ill-posed sets of linear equations typically arise when discretizing certain types of integral transforms. A well known example is image reconstruction, which can be modelled using the Radon transform. After expanding the solution into a finite series of basis functions a large, sparse and ill-conditioned linear system arises. We consider the solution of such systems. In particular we study a new class of iteration methods named DROP (for Diagonal Relaxed Orthogonal Projections) constructed for solving both linear equations and linear inequalities. This class can also be viewed, when applied to linear equations, as a generalized Landweber iteration. The method is compared with other iteration methods using test data from a medical application and from electron microscopy. Our theoretical analysis include convergence proofs of the fully-simultaneous DROP algorithm for linear equations without consistency assumptions, and of block-iterative algorithms both for linear equations and linear inequalities, for the consistent case. When applying an iterative solver to an ill-posed set of linear equations the error typically initially decreases but after some iterations (depending on the amount of noise in the data, and the degree of ill-posedness) it starts to increase. This phenomena is called semi-convergence. It is therefore vital to find good stopping rules for the iteration. We describe a class of stopping rules for Landweber type iterations for solving linear inverse problems. The class includes, e.g., the well known discrepancy principle, and also the monotone error rule. We also unify the error analysis of these two methods. The stopping rules depend critically on a certain parameter whose value needs to be specified. A training procedure is therefore introduced for securing robustness. The advantages of using trained rules are demonstrated on examples taken from image reconstruction from projections. / Vi betraktar lösning av sådana linjära ekvationssystem som uppkommer vid diskretisering av inversa problem. Dessa problem karakteriseras av att den sökta informationen inte direkt kan mätas. Ett välkänt exempel utgör datortomografi. Där mäts hur mycket strålning som passerar genom ett föremål som belyses av en strålningskälla vilken intar olika vinklar i förhållande till objektet. Syftet är förstås att generera bilder av föremålets inre (i medicinska tillämpngar av det inre av kroppen). Vi studerar en klass av iterativa lösningsmetoder för lösning av ekvationssystemen. Metoderna tillämpas på testdata från bildrekonstruktion och jämförs med andra föreslagna iterationsmetoder. Vi gör även en konvergensanalys för olika val av metod-parametrar. När man använder en iterativ metod startar man med en begynnelse approximation som sedan gradvis förbättras. Emellertid är inversa problem känsliga även för relativt små fel i uppmätta data. Detta visar sig i att iterationerna först förbättras för att senare försämras. Detta fenomen, s.k. ’semi-convergence’ är väl känt och förklarat. Emellertid innebär detta att det är viktigt att konstruera goda stoppregler. Om man avbryter iterationen för tidigt fås dålig upplösning och om den avbryts för sent fås en oskarp och brusig bild. I avhandligen studeras en klass av stoppregler. Dessa analyseras teoretiskt och testas på mätdata. Speciellt föreslås en inlärningsförfarande där stoppregeln presenteras med data där det korrekra värdet på stopp-indexet är känt. Dessa data används för att bestämma en viktig parameter i regeln. Sedan används regeln för nya okända data. En sådan tränad stoppregel visar sig fungera väl på testdata från bildrekonstruktionsområdet.
186

Active neutralisation and amelioration of acid mine drainage with fly ash

Damini Surender January 2009 (has links)
<p>Fly ash and AMD samples were characterised by standard analytical methods for selection of the test materials. Active treatment by means of mixing fly ash with AMD in beakers and a large tank at pre-determined ratios have shown that fly ash is capable of neutralising AMD and increasing the pH beyond neutral values, which optimises the removal of heavy metals and ions. The trend was: the more fly ash added the quicker was the reaction time and higher the pH values achieved. Iron was reduced by as much 99 % in beaker scale experiments via Fe(OH)3 precipitation at pH values &gt / 4.0. A 99 % decrease in aluminium concentration was observed which was attributed to the precipitation of primarily gibbsite and various other mineral phases at pH values &gt / 5.5. As the pH increases, sulphate is adsorbed via Fe(OH)3 and gypsum precipitation at elevated pH. Sulphate attenuation with fly ash was excellent, achieving 98 % attenuation with beaker scale experiments and 1:1 fly ash:AMD ratio. Sulphate attenuation with fly ash was comparable to membrane and ion exchange systems and exceeded the performance of limestone treatment. Except for the larger volumes of fly ash needed to neutralise the AMD, fly ash proved to be a feasible and cost efficient alternative to limestone treatment. Fly ash produced competing results to limestone concerning acidity removal and sulphate attenuation. The comparison highlighted the advantages of utilising fly ash in comparison to limestone and demonstrated its cost effectiveness. The results of this study have shown that fly ash could be successfully applied for the neutralisation of acid mine drainage (AMD) and effectively attenuate the sulphate load in the treated water. The critical parameters to this technology are the variations of chemical composition and mineralogy of fly ash, which could influence the pH, contact time of the neutralisation reaction, and the same is true if the AMD quality varies.</p>
187

Different Applications for an Innovation : A feasibility analysis of a business opportunity

Johnson, Carl, Tejada, Silvina January 2007 (has links)
Due to the pressure of hyper competitive markets, companies are forced to constantly search for improvements in their range of products and services. The success key is to be proactive and implement strategies that value innovation trough business processes and diversification of products and services. The ideal situation is when real added values are offered to customers. This Master Thesis, as a practice oriented project, analyzes the feasibility of a new business concept “Smart storage”, and aims to identify the existence of a real opportunity. It not only provides a practical solution to a case regarding innovation trough product diversification, but also shows the detailed processes that were used to solve it. There were several phases in the project. The first phase included ideas generation(the discovery of different applications for the business idea); valuable information resulted from brain storming sessions, focus groups and whishing and bug-lists of creative techniques. It was also necessary to run meetings with the consultant who is working close to the company that wants launch the new product and the Company itself. Once we come up with different applications, it was necessary to gather information about their attractiveness which constitutes the second phase of the study. In this case we contacted several organizations and information resulted from interviews,internet search, telephone calls, e-mails and observation. The empirical data gathering phase was extremely important for the analysis of the project. Finally, for data analysis and its interpretation, we used the Feasibility analysis framework. The conclusion points out that there is a great potential for starting a “Smart storage for Stadsarkivet-usage” project with public archive institutions. However further studies should be taken place in order to complete the feasibility analysis.
188

Suggestions for Improvements on Shanghai’s Entrepreneurial Environment : A Comparative Study Based on the Different Perspectives of Experts and Undergraduates

Feng, Qiao, Liu, Jianchao January 2009 (has links)
This study focuses on undergraduates in Shanghai and aims to generate some practical implications on how to improve the entrepreneurial environment by enhancing undergraduates’ entrepreneurial intentions. The authors initiated an analytical model with support from the GEM conceptual model and Krueger’s intention model (2000) to carry on an investigation among local undergraduates. The data reflects an actuality of undergraduates’ entrepreneurial intention. On the other hand, by the correlation analysis, undergraduates’ preferences upon different aspects of entrepreneurial environment are filtered out. Finally, practical implications are given through two aspects. One is divisions of respondents by their different grades of entrepreneurial intentions; the preferences from the higher intentioned group will firstly be suggested to improve. The other one is based on the comparison between undergraduates’ valuation and experts’ measurement on the entrepreneurial environment. In conclusion, the study reflects that the analytical model is applicable to undergraduates in Shanghai. To enhance undergraduates’ entrepreneurial intention, it is highly recommended by the authors to improve entrepreneurial environment through more attention to the feasibility of technology transfer, sufficient government programs for new firms, the effectiveness of technological region, and government projects.
189

Produktutveckling av ostpress / Product development of chesepress

Jägbring, Jessica, Walfridsson, Anna January 2012 (has links)
No description available.
190

Feasibility Study for a Wind Power Project in Sri Lanka : a Minor Field Study

Furulind, Johan, Berg, Johan January 2008 (has links)
This report covers a feasibility study for a wind power project in Sri Lanka. Three potential sites for a wind farm are presented, out of which the Ambewela Cattle Farm is chosen as the most suitable. Limitations of a wind farm at the site, due to properties of the electrical grid and logistical issues, are examined and costs related to installing the wind farm are estimated. The maximum capacity of a wind farm is calculated to 45 MW. The payback period of the wind farm is calculated to 4.4 years. Environmental benefits of the wind farm are estimated in terms of avoided CO2-emissions, which are calculated to 76 000 metric tonnes per year. The study concludes that a wind power project at the chosen site should be technically and financially feasible, if a wind turbine that matches certain logistical criteria can be found.

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