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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.
141

Small-Scale Exertion in Sports Video Games

2015 April 1900 (has links)
Sports video games should be inherently competitive, but they fall short in providing competition between player skills. The translation of real-world physical activities to a game controller and the emphasis on statistical simulations in traditional sports video games leads to a limited opportunity for expertise development, individual differentiation, and fatigue. These are three very important aspects of real-world sports that are lacking in sports video games. One possible solution to these difficulties is to use small-scale exertion. This method requires the design of an input mechanic that requires only the use of hands and fingers (or feet). We created two small-scale exertion sports video games (Track and Field Racing and Jelly Polo) and ran four studies to compare our small-scale exertion games to traditional rate-based sports video games. Qualitative and quantitative results suggest that using small-scale exertion increases the amount of expertise development, individual differentiation, and fatigue in sports video games. Results also suggest small-scale exertion controls are more engaging than traditional rate-based controls. By using small-scale exertion to add physicality into sports video games, we are able to increase richness, competitiveness, and realism in order to create a game which is competitive, in terms of player skill, and sport-like.
142

SUSTAINABLE AQUACULTURE: INTERNATIONAL LEGISLATION, TECHNICAL ASPECTS, PRESENT SITUATION AND FUTURE POTENTIAL DEVELOPMENT

MONTICINI, PIERLUIGI 28 May 2015 (has links)
The object of this thesis is to sustain that achieving Sustainable Development in Aquaculture and Fisheries is not only possible, but also strongly recommendable. Fishing and Aquaculture products are a highly valuable source of protein that remarkably contribute to food security at a global level. They also constitute a source of income and employment, but when ill managed, can cause irreversible depletion of natural aquatic resources.
143

The Fair Trade Coffee Business Model’s Affect on the Small Scale Producers through the Lens of the Triple Bottom Line

Krupka, Joseph 31 July 2012 (has links)
The aim of this study is to understand the Fair Trade Coffee Business Model by determining how the Fair Trade Coffee Business Model affects the livelihoods of the small scale producers in developing countries. The Fair Trade Coffee Business Model is driven by the mission to improve the well-being of the small scale producers located in developing countries through the lens of the Triple Bottom Line (economic, social and environment). What is the significance of fair trade coffee to the economies of developing countries that produce coffee? The economies are considerably impacted by coffee production as coffee ranks as the second foremost exported commodity from developing countries (European Coffee Federation, 2006). Ensuring the small scale producers receive a fair price for the coffee they grow is only one of the initiatives of the model. Other key initiatives include pre-harvest financing, increased healthcare services, working together for a higher quality coffee, fairer business conduct, improvements in education, and technical assistance. The findings of this study provide some insights into the Fair Trade Coffee Business Model’s effect on the livelihoods of the small scale producers in developing countries through the lens of the Triple Bottom Line. The Fair Trade Coffee Business Model has increased the quality of the coffee bean produced by the small scale producers along with developing long term business relationships throughout the Fair Trade Coffee Business Model supply chain. In sum, the small scale producers reported that the Fair Trade Coffee Business Model has a positive effect on their livelihood and well-being. More specifically, they also indicated that the motivations for them to participate in the Fair Trade Coffee Business Model are receiving a better price for coffee, democratic decision making and farm training. An additional finding affirms that the Fair Trade Coffee Business Model is a sound contributor to the socio-economic stability of the small scale producers, offering a sustainable income-generating alternative market strategy.
144

Community-based governance of artisanal fisheries, Ngazidja Island, Comoros

Hauzer, Melissa 30 September 2011 (has links)
Tropical small-scale fisheries represent the main livelihood and protein source for a substantial portion of the global population. Growing pressures on marine resources, however, have left many fishing communities faced with declining catches and increased environmental degradation. Effective management strategies and governance institutions are thus critically important. Conventional top-down, exogenous approaches to fisheries management have been ineffective in more traditional and small-scale fisheries. Yet, there remains little understanding of the effectiveness of alternative approaches and few studies offer feasible solutions for managers in lesser developed nations. This case-study of artisanal fisheries in the Comoros examines how effective local fishing associations are at managing common fisheries resources, and provides some understanding of the underlying characteristics of effectiveness. To do so, qualitative methods were used to collect data on fishing practices, local knowledge and beliefs, governance structures, and livelihoods in male and female fisheries in five villages on Ngazidja island. The results of this study are organized into three papers. The first paper focuses on current fisheries trends on Ngazidja and the implications of the gradual shift from traditional to modern fishing practices. This paper contributes to the overall goal of this study as the modernization of the fishing sector may affect both the ecological sustainability of the fishery and the ability of local fishing associations to effectively govern fisheries. Results show that although the fishery sector is not undergoing a rapid modernization, loss in traditional practices, beliefs, and values are occurring and may be linked to corresponding declines in marine resources. Improved monitoring systems will help inform local governing institutions about the need to develop enhanced management practices. The second paper examines the effectiveness of community-based governance of artisanal fisheries and addresses the overarching goal of the study by improving understanding of the key elements of success of the community fishing associations. These fishing associations collectively design, monitor, and enforce local regulations. Decisions are based on local knowledge and experience, and management strategies are based on low-cost, practical solutions. Compliance with local regulations is high, primarily due to participatory decision-making, community-monitoring, and strong feelings of solidarity among fishers. The last paper looks at fisherwomen on Ngazidja and focuses specifically on documenting their fishing practices, livelihood contributions, and potential participation in fisheries management. This paper is critical to enhancing understanding of the impacts and potential of the fishery on Ngazidja as the sector has so far failed to take into account all marine harvesting activities, particularly those undertaken by women. Moreover, authorities have recently attempted to ban women from fishing as their practices are considered destructive to near-shore reefs and juvenile fish populations. Results from the study indicate that women’s fishing methods can be destructive and may have contributed to localized declines in intertidal marine resources and habitats. Yet, fisherwomen also provide substantial contributions to household livelihoods. Thus, banning the fishery altogether is not an acceptable solution. Instead, authorities should work to empower fisherwomen with the tools necessary to manage their fishery sustainably, which will eventually lead to improved conservation measures. Overall, this case-study provides a unique example of how collective governance of common-pool resources can be achieved within communities, and how feelings of empowerment and shared responsibility among users can lead to effective management practices. There are a number of clear lessons learned from the successes of this fishery that can be applied to other similar small-scale fisheries. Future research priorities should concentrate on assessing the ecological sustainability of current fishing and management practices, and paying particular attention to the recognition and inclusion of fisherwomen. Marine conservation and sustainable fisheries systems are only facilitated when all users are recognized and engaged in management and policy decisions. / Graduate
145

Small-scale heat-driven adsorption cooling

Robbins, Thomas 12 January 2015 (has links)
Heat driven adsorption cycles use heat sources ranging in temperature from 80 - 150 °C to provide cooling, and have been used in both air conditioning and refrigeration applications. Adsorbent heat pumps operate with low cost, simple components, and very little vibration, making them appealing as an alternative heat pump technology. However, they have been limited thus far to commercial and industrial scale applications. To date, adsorption systems have predominantly used natural or industrial waste streams as heat sources in the 10s of kW range. This work expands the scope of adsorption applications to include heat driven cooling at small capacities (watts) and mobile cooling without electronic controls. Autonomous heat driven adsorption system controls are proposed and tested for these systems. Component and system level models are developed for design and assessment. Major trends in system performance with scale are identified and the causes for these scaling effects are presented. New adsorbent bed designs are proposed and modeled for small-scale adsorption systems. The small-scale adsorbent bed designs are fabricated and tested. Models are validated and refined based on the experimental results. Through a combination of modeling and experimental results, this work demonstrates the feasibility of adsorption system application at capacities that two orders of magnitude lower than any previously demonstrated work.
146

A model for a contractor support agency

Larcher, Paul A. January 2000 (has links)
This thesis is concerned with the development of small scale contractors in developing countries. The global trend towards privatisation has led to an increasing interest in the use of the private sector for the construction of buildings and infrastructure. In developing countries large projects are typically undertaken by large foreign contractors however, there are few small scale contractors to undertake small construction projects or maintenance work. The first stage of the study investigated three issues pertinent to the small scale contracting sector: 1. The problems experienced by small scale contractors and the inter-relationship of these problems 2. Contractor development projects to identify their support mechanisms and assess their level of success 3. A review of the construction industry framework in developed and developing countries to highlight the problems caused by their different structures. The second stage of the study proposes the use of a Contractor Support Agency as the most appropriate support mechanism for the development of the indigenous contracting sector and outlines the roles and activities that should be undertaken by the agency. The Contractor Support Agency model is reviewed by experts in the sector and the analysis of the results presented in the thesis. The thesis concludes that the proposed model is broadly correct and discusses small modifications that can be made to enhance its suitability in a range of different situations.
147

Small-scale producers and the governance of certified organic seafood production in Vietnam’s Mekong Delta

Omoto, Reiko January 2012 (has links)
As food scares have hastened the growth of safety and quality standards around the world, certification schemes to assure various attributes of foods have proliferated in the global marketplace. High-value food commodities produced in the global south for export have been the subject of such schemes through third-party environmental certifications, providing regulatory and verification mechanisms welcomed by global buyers. As certification becomes more common, re-localization in the current global context can also mean the projection of place onto a food commodity to highlight its origin or attributes secured by transparent verification mechanisms. However, environmental food certification is often criticized for its inapplicability in the context of the global south, due to the extensive documentation requirements and high costs. The key question here is the process for small-scale producers in the global south to navigate increasing international regulation of food safety and quality. This dissertation examines (1) how the environmental standards (as defined by the global north) were translated in the rural global south through international certification schemes, and (2) what the implications are at the local level, especially where producers had not yet integrated into conventional global markets before the introduction of certification. The dissertation also analyzes the influence of such certification in determining the development trajectories of rural society in the global south. A case study is used to examine newly-introduced certified organic shrimp production in Ca Mau Province in Vietnam’s Mekong Delta. The selected shrimp production site is the first pilot organic shrimp project in Vietnam working with an international third-party certification scheme. It is located in rural Vietnam where, as in other parts of Southeast Asia, an accelerated process of agrarian transition is underway. Whereas elsewhere the trend with intensified regulation has been the consolidation of large-scale farms and the exclusion of small-scale farms from international agrofood markets, this case study demonstrates comparative advantages of small-scale farms over large-scale farms in producing sensitive high-value crops. This dissertation employs two main analytical approaches. The first approach is to examine the network of actors and the flow of information, payment and shrimp at the production level using environmental regulatory network (ERN). In contrast to chain analyses, which can be useful in identifying linear structure of supply chains for global commodities, ERN can capture the interrelatedeness of actors in the network built around environmental certification for agrofood products. The second analytical lens is that of agrarian transition. Countries experiencing agrarian transition at present are doing so in a very different international context from countries that accomplished their transitions in the past. Results of this research indicate that technical and financial constraints at the time of initial certification are not the primary obstacles to farmers getting certified, since the extensive farming method employed at the study site is organic by default. In spite of this, many farmers unofficially withdrew from the organic shrimp project by simply shifting their marketing channel back to a conventional one. Inefficient flows of information and payments, and a restrictive marketing channel within the environmental regulatory network that does not take into account local geographical conditions and farming practices, all contributed to limiting the farmers’ capacity and lowering their incentives to get involved in the network. The analysis also indicates that, by influencing those agrarian transition processes, food standards and certification based on values developed in the global north may modify, reshape and/or hold back agrarian transition processes in agricultural sectors of developing countries. The potential benefits of environmental certification are enhanced rural development, by generating opportunities for small-scale farmers to connect to global niche markets. The findings of this dissertation highlighted that such certification schemes or their environmental regulatory networks need to ensure information sharing and compensation for farmers. As an empirical finding, this dissertation also captures where ecological credibility and market logic meet: the success of this kind of certification depends on finding a balanced point where standards are ecologically (or ethically) credible to the level that does not attract too much criticism for being green washing, but not too unrealistic to become a disincentive for farmers to participate.
148

Failure or success of African SME’s : a study on UWAZI cooperation in Zanzibar

Oscarsson, Marie January 2007 (has links)
In the discussions today about Africa’s way out of poverty the main focus has been on SME’s, and there potential to increase the economy. In my thesis I research a network of small scale producers in Zanzibar called UWAZI. The thesis compares the theory of Robertson and Lussier, with UWAZI’s situation in Zanzibar. The two most important factors for success are identified as networks and financing which this thesis is focusing on. The conclusion is that UWAZI needs a better financing programme in order to be successful in the future and if this is implemented there is no reason for them to fail. They have a strong network and cooperation and a good mentor programme linked to the business. This thesis proves that it is possible for a women network to reach a successful enterprise in Africa.
149

EFL learners in Vietnam: an investigation of writing strategies

Nguyen, Thi Ngoc January 2009 (has links)
Research into second language strategies has started as a result of the shift of focus, from teachers and teaching to learners and learning which has taken place in the field of education over the last few decades. Strategies used by good language learners have been revealed, strategies used by successful and less successful language learners have been compared, and factors influencing the use of learning strategies have also been investigated. As an attempt to contribute to gaining more insights into language learning strategy, this research aims to investigate the writing strategies used by successful and less successful English-as-a-foreign-language (EFL) learners and the relationship between strategy use and the learners’ success. A multi-method approach combining both qualitative and quantitative approaches was used to answer the research questions. This approach was achieved by means of method triangulation which consisted of structured questionnaires, semi-structured interviews, and learning diaries. Nine female adult native Vietnamese students, who were in their second year of a four-year Bachelor program at Hanoi University in Vietnam, participated in the study. Questionnaires were administered at the beginning of the data collection phase. Guidelines for diary writing were then provided to the participants. Semi-structured interviews which served as the primary method of data collection were finally conducted with each of the participants. Findings from the study showed that the successful writers not only used strategies more frequently but also used more metacognitive, memory, compensation, and cognitive strategies than the less successful writers. The study also found some strategies which were most and least frequently used by both the successful and less successful writers.
150

EFL learners in Vietnam: an investigation of writing strategies

Nguyen, Thi Ngoc January 2009 (has links)
Research into second language strategies has started as a result of the shift of focus, from teachers and teaching to learners and learning which has taken place in the field of education over the last few decades. Strategies used by good language learners have been revealed, strategies used by successful and less successful language learners have been compared, and factors influencing the use of learning strategies have also been investigated. As an attempt to contribute to gaining more insights into language learning strategy, this research aims to investigate the writing strategies used by successful and less successful English-as-a-foreign-language (EFL) learners and the relationship between strategy use and the learners’ success. A multi-method approach combining both qualitative and quantitative approaches was used to answer the research questions. This approach was achieved by means of method triangulation which consisted of structured questionnaires, semi-structured interviews, and learning diaries. Nine female adult native Vietnamese students, who were in their second year of a four-year Bachelor program at Hanoi University in Vietnam, participated in the study. Questionnaires were administered at the beginning of the data collection phase. Guidelines for diary writing were then provided to the participants. Semi-structured interviews which served as the primary method of data collection were finally conducted with each of the participants. Findings from the study showed that the successful writers not only used strategies more frequently but also used more metacognitive, memory, compensation, and cognitive strategies than the less successful writers. The study also found some strategies which were most and least frequently used by both the successful and less successful writers.

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