7,567 research outputs found
Recommended from our members
Introducing Research Methods and Skills in a Workshop Environment.
Yes`Research Seminar Series¿ is a 10-credit,
Level M module offered to MSc/MEng students undertaking programmes in the areas of Electrical and Electronic Engineering at the University of Bradford. The module¿s aims are twofold: i) to disseminate stateoftheart
information that could form the basis for
future research programmes¿ and ii) to introduce the stages involved in the preparation and presentation of a research paper.Higher Education Academ
Impact and puncture resistant material protects parts from damage
Uniform sized, laminated panels protect delicate parts and equipment from damage during storage and transportation. The panels consist of sheets of steel foil bonded between sheets of elastic foam. They are lightweight, impact and puncture-resistant, and, when formed into an enclosure, provide a barrier against moisture and thermal shock
On a frame theoretic measure of quality of LTI systems
It is of practical significance to define the notion of a measure of quality
of a control system, i.e., a quantitative extension of the classical notion of
controllability. In this article we demonstrate that the three standard
measures of quality involving the trace, minimum eigenvalue, and the
determinant of the controllability grammian achieve their optimum values when
the columns of the controllability matrix from a tight frame. Motivated by
this, and in view of some recent developments in frame theoretic signal
processing, we provide a measure of quality for LTI systems based on a measure
of tightness of the columns of the reachability matrix
Benefits and challenges of applying outcome mapping in an R4D project
The Community-based Fish Culture in Seasonal Floodplains and Irrigation Systems (CBFC) project is a five year research project supported by the Challenge Program on Water and Food (CPWF), with the aim of increasing productivity of seasonally occurring water bodies through aquaculture. The project has been implemented in Bangladesh, Cambodia, China, Mali and Vietnam, where technical and institutional options for community based aquaculture have been tested. The project began in 2005 and was completed in March 2010. There is an increasing demand for researchers to demonstrate the impact of the work within project time frames, yet development is a complex, non-linear process emerging from changes that traditional, managerial approaches to development fail to capture or to understand. Methods to address unanticipated change and increasingly important æsoftÆ outcomes, such as improved governance have not yet been widely tested or adopted. In response to this gap, this paper describes lessons learned during the pilot testing of Outcome Mapping as part of an action research process in Vietnam, and presents an abridged OM methodology for application at the community level.Research, Impact assessment, Livelihoods
Conditions for collective action: understanding factors supporting and constraining community-based fish culture in Bangladesh, Cambodia and Vietnam
In 2005, the WorldFish Center embarked on a project to pilot test approaches to community-based fish culture (CBFC) in five countries. A previous study conducted between 1997-2000 demonstrated the potential of the approach in Bangladesh and Vietnam, although a greater understanding was needed regarding the social and institutional factors that would permit the development of CBFC in larger waterbodies to reach a greater number of beneficiaries. The five countries selected for dissemination of CBFC included Cambodia, Vietnam, China, Bangladesh and Mali, each very different in terms of history, politics, social-cultural context, aquaculture experience and development status. They appeared to share environmental characteristics, all having seasonally flooding areas and experience of rice-fish culture. This report presents the findings of this study, based on a detailed evaluation undertaken in 2008-2009 in Cambodia, Vietnam and Bangladesh. Mali and China were not included in the study, both for reasons of time and cost, and due to the different path that project development had taken in each country. Although the research was conducted as consistently as possible across the three countries, using the same methodology in each location, the results are nonetheless also indicative of the differences encountered at each location. The diversity of reasons why CBFC worked and didnÆt work led to difficulties in drawing conclusions across countries, or in quantifying results, with the exception of Vietnam where the number of communities involved in the study made quantification possible. The findings of the study are therefore primarily qualitative in nature, with figures provided relating to number of responses where available. The issues raised by respondents participating in the study are grouped according to environmental conditions, socio-cultural conditions, livelihood context, institutional context, markets and economic viability, technical issues and implementation and incentives and disincentives for uptake and continuance. The report concludes with a summary of lessons learned.Inland fisheries, Flood plains, Rice field aquaculture, Participatory approach, Cambodia, Vietnam, Bangladesh,
Recommended from our members
Accelerating Electromigration Aging: Fast Failure Detection for Nanometer ICs
For practical testing and detection of electromigration (EM) induced failures in dual damascene copper interconnects, one critical issue is creating stressing conditions to induce the chip to fail exclusively under EM in a very short period of time so that EM sign-off and validation can be carried out efficiently. Existing acceleration techniques, which rely on increasing temperature and current densities beyond the known limits, also accelerate other reliability effects making it very difficult, if not impossible, to test EM in isolation. In this article, we propose novel EM wear-out acceleration techniques to address the aforementioned issue. First we show that multi-segment interconnects with reservoir and sink structures can be exploited to significantly speedup the EM wear-out process. Based on this observation, we propose three strategies to accelerate EM induced failure: reservoir-enhanced acceleration, sink-enhanced acceleration, and a hybrid method that combines both reservoir and sink structures. We then propose several configurable interconnect structures that exploit atomic reservoirs and sinks for accelerated EM testing. Such configurable interconnect structures are very flexible and can be used to achieve significant lifetime reductions at the cost of some routing resources. Using the proposed technique, EM testing can be carried out at nominal current densities, and at a much lower temperature compared to traditional testing methods. This is the most significant contribution of this work since, to our knowledge, this is the only method that allows EM testing to be performed in a controlled environment without the risk of invoking other reliability effects that are also accelerated by elevated temperature and current density. Simulation results show that, using the proposed method, we can reduce the EM lifetime of a chip from 10 years down to a few hours 10^5X acceleration under the 150C temperature limit, which is sufficient for practical EM testing of typical nanometer CMOS ICs
Shepherd's Dilemma
Recent outbreaks of Rift Valley Fever in sheep have led to boycotts of African livestock by Middle Eastern importers. To normalize trade, attempts have been made to apply new livestock forecasting and monitoring technologies. In this process, producers have exhibited a resistance in revealing livestock health information, a resistance that could jeopardize the information system and lead to further boycotts. We investigate the incentives governing this problem and model the most fundamental contract issues, those concerning reputation and credibility. Equilibrium contracts require that the buyer compensate the producer for private information to address the shepherd's dilemma of concealing livestock information (and facing continued boycotts) or revealing the information and being blacklisted.Livestock Production/Industries,
Recommended from our members
Distance learning of engineering based subjects: A case study.
YesWith the advancement of technology, significant changes have been introduced into the learning and teaching environment. The importance of enhancing the interest of learners is an on-going challenge for educators of all levels. In this respect, teaching and learning practices are adapting to students¿ exposure to technological and social trends. In this presentation, a case study of using technology to enhance the learners¿ environment for engineering-based subjects in higher education is presented. The approach consists of delivering interactive materials through a Virtual Learning Environment and integrating web
application technologies to enhance the learners¿ experience. Due to the vast subject areas in engineering and the variety of content of each subject, a general methodology is first identified and adopted. This consists of stages that show the progress from initial development to deployment of the materials, followed by evaluation of the module and further improvements carried out on the module based on qualitative evaluation. The evaluation process consists of the application of electronic surveys for feedback on the
distance learning module. In addition, monitoring of the students¿ usage of the materials is also carried out. The presentation concludes with the presentation of the initial results from a current e-learning module
- …
