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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.
91

Bokstäverna bara hoppar! : Att kämpa med avkodningen och dessutom förstå det du läser.

Ek, Maria January 2013 (has links)
Title: “The letters jump”- to struggle with decoding and still understand what you are reading.Author: Maria EkUniversity of UmeåDepartment of EducationSupervisor: Asbjörg WestumExaminer: Fredrik KarlssonKeywords: Poor readers, Structured text talks, Reading strategies, Reading comprehension, Commitment and Motivation.During the past decades, Swedish studies show that reading comprehension and skills in reading strategies have decreased. In secondary school for individuals with learning disabilities there has been a focus on care-taking rather than on comprehension in general, and on reading comprehension in particular.The purpose of this study was to investigate whether Reciprocal Teaching would increase reading comprehension and motivation among upper secondary school for individuals with learning disabilities. The study presents how three 17-year-old pupils and their teacher, discussed expository fact texts during twelve lessons using the reciprocal method combined with power point-presentations to get the students to read more actively with interferences and reflections. The ambition was to make the structured text talks as interesting as possible with texts easy to read, technical aids, structure to make the students feel security when reading and to get committed pupils with an increased interest in reading.The results show an increase in motivation in reading, and the students were more prone to take an active part in discussions.
92

A Novel 3D Sensory System for Robotic Urban Search and Rescue Missions

Mobedi, Babak 12 January 2011 (has links)
Urban Search and Rescue (USAR) is the emergency response function that deals with the collapse of man-made structures. USAR environments contain concrete rubble, dust and debris, and provide poor lighting conditions. Due to the dangers that USAR rescue workers and their canines face, robots have become of interest in aiding rescue workers in searching. Experiences with robots in USAR missions have shown that a compact 3D sensor for 3D mapping of the environment is beneficial in providing the robot and identified victims’ locations within the structurally unstable environment. This thesis presents the developments of a novel 3D sensory system that provides both 3D and 2D texture information for mapping of cluttered unknown USAR environments. The sensor has been integrated into a robot platform, and experiments conducted to validate its usability in such applications. The experimental results show the potential for using this sensor in USAR robot mission.
93

A Novel 3D Sensory System for Robotic Urban Search and Rescue Missions

Mobedi, Babak 12 January 2011 (has links)
Urban Search and Rescue (USAR) is the emergency response function that deals with the collapse of man-made structures. USAR environments contain concrete rubble, dust and debris, and provide poor lighting conditions. Due to the dangers that USAR rescue workers and their canines face, robots have become of interest in aiding rescue workers in searching. Experiences with robots in USAR missions have shown that a compact 3D sensor for 3D mapping of the environment is beneficial in providing the robot and identified victims’ locations within the structurally unstable environment. This thesis presents the developments of a novel 3D sensory system that provides both 3D and 2D texture information for mapping of cluttered unknown USAR environments. The sensor has been integrated into a robot platform, and experiments conducted to validate its usability in such applications. The experimental results show the potential for using this sensor in USAR robot mission.
94

Structured leisure and adolescent adjustment

Nicoll, Mark John 02 January 2008
The relationships between participation in structured leisure (SL) activities (e.g., sports, prosocial activities) and adolescent adjustment were investigated. SL activities have been associated with various developmental benefits but there has been a limited number of studies that have investigated the potential negative aspects of participation. Questionnaire data were collected from 210 boys and girls (between grades 10 and 12). Fourteen students participated in focus groups to obtain a phenomenological perspective on SL participation. Adjustment variables included a well-being composite (comprised of depression, anxiety, self-esteem, and life satisfaction), a school orientation composite (comprised of students levels of school involvement and their values regarding school), academic achievement, and self-oriented and socially prescribed perfectionism. Three hypotheses were examined. First, it was predicted that there would be a curvilinear relationship between the extent of SL participation and the various adjustment variables. Second, aspects of play and leisure were expected to have moderating effects on the relationships between SL participation and outcomes. Third, aspects of perfectionism were hypothesized to play a moderating role on the relationship between SL and adolescent adjustment. <p>Although the present investigation yielded some insightful observations about participation in SL activities, the results provided no direct support for the hypotheses. Regression analyses indicated positive relationships between SL participation and self-oriented perfectionism, and SL participation and academic achievement. Negative relationships were found between the degree of playfulness in SL activities and socially prescribed perfectionism, and between academic achievement and global intrinsic leisure motivation. Notable focus group themes included a distinction between the fun experienced in SL activities and the fun experienced in nonstructured contexts, significant positive and negative experiences related to SL participation, and differences and similarities between the SL context and other contexts such as school. It is argued that leisure theory can contribute to a better understanding of the developmental implications of SL participation and that the relationship between SL participation and perfectionism merits further investigation.
95

Autonomic Dynamic Load Balancing of Parallel SAMR Applications

Ljungkvist, Karl January 2011 (has links)
When solving partial differential equations using finite difference methods on structured meshes, adaptive refinement can be used to increase the accuracy of the solution in an efficient manner. When implementing solvers using structured adaptive mesh refinement for modern parallel computer systems, an important task is the partitioning of the grid hierarchy over the available processors. The Meta-partitioner is an autonomic framework which can dynamically select between a large number of grid-partitioning algorithms at run time. In this thesis we investigate which modifications that are necessary in order to connect the Meta-partitioner to the existing SAMR-framework Chombo, and begin the process of performing this connection. We conclude that although significant changes to both Chombo and the Meta-partitioner are necessary, a connection definitely seams feasible. We estimate that that the major work of the connection has been done, and that with the experience gained from this project, the continuation is straightforward. We also connect a patch-based partitioning algorithm to Chombo and evaluate it for the first time as part of a real SAMR-based simulation. The results are promising and we conclude that it is a viable candidate for inclusion in the Meta-partitioner.
96

Structured leisure and adolescent adjustment

Nicoll, Mark John 02 January 2008 (has links)
The relationships between participation in structured leisure (SL) activities (e.g., sports, prosocial activities) and adolescent adjustment were investigated. SL activities have been associated with various developmental benefits but there has been a limited number of studies that have investigated the potential negative aspects of participation. Questionnaire data were collected from 210 boys and girls (between grades 10 and 12). Fourteen students participated in focus groups to obtain a phenomenological perspective on SL participation. Adjustment variables included a well-being composite (comprised of depression, anxiety, self-esteem, and life satisfaction), a school orientation composite (comprised of students levels of school involvement and their values regarding school), academic achievement, and self-oriented and socially prescribed perfectionism. Three hypotheses were examined. First, it was predicted that there would be a curvilinear relationship between the extent of SL participation and the various adjustment variables. Second, aspects of play and leisure were expected to have moderating effects on the relationships between SL participation and outcomes. Third, aspects of perfectionism were hypothesized to play a moderating role on the relationship between SL and adolescent adjustment. <p>Although the present investigation yielded some insightful observations about participation in SL activities, the results provided no direct support for the hypotheses. Regression analyses indicated positive relationships between SL participation and self-oriented perfectionism, and SL participation and academic achievement. Negative relationships were found between the degree of playfulness in SL activities and socially prescribed perfectionism, and between academic achievement and global intrinsic leisure motivation. Notable focus group themes included a distinction between the fun experienced in SL activities and the fun experienced in nonstructured contexts, significant positive and negative experiences related to SL participation, and differences and similarities between the SL context and other contexts such as school. It is argued that leisure theory can contribute to a better understanding of the developmental implications of SL participation and that the relationship between SL participation and perfectionism merits further investigation.
97

Urbanization in sub-Saharan Africa : A Study of Contemporary Urban Population Growth in a Less Developed Region

Nordhag, Maria January 2012 (has links)
This study investigates the contemporary urbanization process of sub-Saharan Africa. The region is predicted to experience a surge in urban population growth the forthcoming decades, yet why and how this is happening is not very clear. Theory often considers urbanization to be a part of a modernization process where people migrate from rural areas to urban. But depictions of reality suggest that rural-to-urban migration might be less significant than previously thought, and neither is it given that urbanization causes prosperity in sub-Saharan Africa. This thesis tries to complement the gap of knowledge regarding the mechanisms of urbanization in sub-Saharan Africa. Statistical data is organized and assembled by using the structured, focused comparison method and then analyzed in order to create an understanding of urbanization and urban population growth in this particular region. The result of this study suggests that the mechanisms for urban population growth change over time. Urban population growth is often thought to be driven by rural-to-urban migration. However, nowadays there is a correlation between urban population growth and population increase, which did not exist a couple of decades ago. It is clear that urbanized countries are, typically, more advanced regarding economic growth, but it is unsure whether this factor affects socio-economic development. The findings underscore the vast complexity of urbanization and urban population growth, as well as the heterogeneity of sub-Saharan Africa. Yet there is potential for a new theoretical framework that can provide explanations to the processes sub-Saharan Africa is expected to undergo.
98

Study on structure product investor's investment behavior and risk preference after financial crisis, for F bank Hong Kongexample

Huang, Yen-hung 24 June 2010 (has links)
Abstract In the recent years, there has been a wave of financial globalization and it caused the rapid expansion of financial markets, financial markets become more open, capital flows speeded greatly, and new financial product published in the market, increased the degree of mutual influence. In the 2007, the subprime mortgage of America caused the global financial crisis. Most invest banks such as Lehman Brother and brokers and lots of investors were hurt deeply by the financial crisis and the assets reduced rapidly as well. Due to the collapse of the financial system, lots of banks need to issue new financial product like Dual Currency Deposit (DCD) to customers instead of structure note. However, the new financial products have sold very well, it caused great concern to the government to restrict strictly to financial consultants and establish the classification for investors. The thesis use survey research and collect relevant reference to discuss the change of the investors¡¦ investment behavior and risk preference of the new financial products after the financial crisis. The questionnaire can be divided into four parts which are personal data¡Binvestor¡¦s risk attributes¡Bthe risk of new financial products and investment related information. In conclusion, we found the level of personal risk and commodity risk inconsistently. For the reason, the investment risk does affect the confidence of investors after the financial crisis. Furthermore, the financial institutions can target the groups of 40-49 year old ages as the future marketing. Most respondents believed that the investment environment between Taiwan and Hong Kong are different in financial policies¡Bfinancial officers knowledge. Consequently, we wish can provide Taiwan financial institutions for further reference for professional investors with specialized service and qualified financial consultants. Keyword: financial crisis, structured product, risk, investment behavior, survey research
99

A Comparison between Structured and Object-Oriented Systems Analysis and Development: Modeling Tools and Artifact

Lin, Chien-hung 07 July 2010 (has links)
Since the Software Engineering Institute published the Capability Maturity Method Integration (CMMI) in 2003, many software firms have implemented it to enhance its software quality assurance and international collaboration. Analysis and design phases are two important phases for the software development. The artifacts of these two phases mainly represented using the structured technique or the object-oriented technique. This study proposed a methodology which provides guidelines to compare the artifacts of these two techniques for an embedded system. The research methodology is articulated using the design science research methodology. A usability valuation with a real-world embedded system case is performed to demonstrate its applicability. The results provide evidences to enhance our understanding about the strength and weakness of these two nalysis and design techniques.
100

Pool boiling on nano-finned surfaces

Sriraman, Sharan Ram 15 May 2009 (has links)
The effect of nano-structured surfaces on pool boiling heat transfer is explored in this study. Experiments are conducted in a cubical test chamber containing fluoroinert coolant (PF5060, Manufacturer: 3M Co.) as the working fluid. Pool boiling experiments are conducted for saturation and subcooled conditions. Three different types of ordered nano-structured surfaces are fabricated using Step and flash imprint lithography on silicon substrates followed by Reactive Ion Etching (RIE) or Deep Reactive Ion Etching (DRIE). These nano-structures consist of a square array of cylindrical nanofins with a longitudinal pitch of 1 mm, transverse pitch of 0.9 mm and fixed (uniform) heights ranging from 15 nm – 650 nm for each substrate. The contact angle of de-ionized water on the substrates is measured before and after the boiling experiments. The contact-angle is observed to increase with the height of the nano-fins. Contact angle variation is also observed before and after the pool boiling experiments. The pool boiling curves for the nano-structured silicon surfaces are compared with that of atomically smooth single-crystal silicon (bare) surfaces. Data processing is performed to estimate the heat flux through the projected area (plan area) for the nano-patterned zone as well as the heat flux through the total nano-patterned area, which includes the surface area of the fins. Maximum heat flux (MHF) is enhanced by ~120 % for the nanofin surfaces compared to bare (smooth) surfaces, under saturation condition. The pool boiling heat flux data for the three nano-structured surfaces progressively overlap with each other in the vicinity of the MHF condition. Based on the experimental data several micro/nano-scale transport mechanisms responsible for heat flux enhancements are identified, which include: “microlayer” disruption or enhancement, enhancement of active nucleation site density, enlargement of cold spots and enhancement of contact angle which affects the vapor bubble departure frequency.

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