1,643 research outputs found

    International Symposium on Women in Asian Fisheries

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    International Symposium on Women in Asian Fisheries presents a record of the 1998 symposium. The fisheries sector has unique problems related to women, which have to be addressed not only from a technical standpoint but also from a social one. The symposium is aimed at stimulating discussion and promoting well-planned research and development activities in this area.Role of Women, Fisheries, Socioeconomics, Indochina, Mekong River, Philippines, Malaysia, Taiwan, India, Bangladesh, Asia,

    Monitoring nearshore processes and understanding significant coastal change using x-band radar

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    Remote sensing through X-band radar can provide wave and current parameters and bathymetric maps in a 4-km radius from a land-based deployment. This paper explores the use of radar to monitor changes in nearshore bathymetry at Thorpeness, Suffolk, UK. The method presented enables significant nearshore changes to be identified based on the analysis of standard deviation of sediment volume. Seasonal changes in bathymetry can reach 4 m but depths tend to be consistent in each season. A storm power index was calculated for periods of time preceding the significant changes in bathymetry. Results indicate that impact on the nearshore is not directly linked to storm power. Storm clusters and antecedent nearshore conditions seem to be important factors, as larger volume changes were measured as a result of the first and smallest storm of a cluster

    Global Symposium on Women in Fisheries

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    All over the world, women contribute in multiple ways to the production, processing, marketing and management of fish and other living aquatic resources. The first ever Global Symposium on Women in Fisheries, held in Kaohsiung, Taiwan on 29 November 2001 generated the present collection of papers on women in fisheries. The reader of this volume will find in it a wealth of information, albeit in a very heterogeneous form, that the authors have had to draw from many different sources. Some are primary research studies whereas most are historical reviews from first hand experience of the authors or derived from other written materials, often contained in reports of fisheries development projects, newspapers and source materials well outside the fish sectors.Women, Participation, Sustainability, Poverty, Fisheries, Development projects, Fishery technology

    Fell bundles and imprimitivity theorems

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    Our goal in this paper and two sequels is to apply the Yamagami–Muhly–Williams equivalence theorem for Fell bundles over groupoids to recover and extend all known imprimitivity theorems involving groups. Here we extend Raeburn’s symmetric imprimitivity theorem, and also, in an appendix, we develop a number of tools for the theory of Fell bundles that have not previously appeared in the literature

    Fisheries production in Asia: its role in food security and nutrition

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    This paper reviews the status and some management issues of fisheries production in Asia, as well as the supply and demand situation. Its food security and nutritional roles and opportunities for value addition are also discussed

    The response to high magnetic fields of the vacuum phototriodes for the compact muon solenoid endcap electromagnetic calorimeter

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    The endcap electromagnetic calorimeter of the Compact Muon Solenoid (CMS) detects particles with the dense fast scintillator lead tungstate (PbWO4). Due to the low light yield of this scintillator photodetectors with internal gain are required. Silicon avalanche photodiodes cannot be used in the endcap region due to the intense neutron flux. Following an extensive R&D programme 26 mm diameter single-stage photomultipliers (vacuum phototriodes) have been chosen as the photodetector in the endcap region. The first 1400 production devices are currently being evaluated following recent tests of a pre-production batch of 500 tubes. Tubes passing our acceptance tests have responses, averaged over the angular acceptance of the endcap calorimeter, corresponding to the range 20 to 55 electrons per MeV deposited in PbWO4. These phototriodes operate, with a typical gain of 10, in magnetic fields up to 4T.PPARC, EC(INTAS-CERN scheme 99-424

    Fisheries production in Asia: its role in food security and nutrition

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    This paper reviews the status and some management issues of fisheries production in Asia, as well as the supply and demand situation. Its food security and nutritional roles and opportunities for value addition are also discussed.Food availability, Nutrition, Fishery management, Fishery resources, Human food, Asia,

    A conceptual design tool to support high-speed vehicle design

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    This paper aims at presenting an integrated multidisciplinary methodology and the related software tool, called ASTRID-H, developed at Politecnico di Torino to support the conceptual and preliminary design phases of high-speed vehicles. Based on the experience in the development of innovative methodologies to cope with complex and highly integrated aircraft, ASTRID-H has been developed to guide students, researchers and engineers through the very first phases of the design of high-speed vehicles. ASTRID-H supports the users to move from the statistical evaluation of the guess data and the identification of the design space to the geometrical characterization of the vehicle guaranteeing a proper integration of the main subsystems. Already available and widely used mathematical models are here integrated in a new algorithm to face the complexity of the design of high-speed vehicles. In addition, the coefficients of the semi-empirical models that were not focusing on high-speed vehicles have been updated to widen classical theories to cover high-speed vehicles. The resulting implemented methodology allows the users to cope with complex multidisciplinary problems, which encompass a variety of interrelated disciplines and heterogeneous levels of fidelity. Furthermore, this paper reports the some of the main results achieved during the validation of the methodology thanks to the application to the STRATOFLY MR3 vehicle case study. STRATOFLY MR3 is a Mach 8 waverider configuration that stems from more than a decade of European research activities in the field of high-speed and currently under investigation in the Horizon 2020 STRATOFLY Project

    Do sophisticated evolutionary algorithms perform better than simple ones?

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    Evolutionary algorithms (EAs) come in all shapes and sizes. Theoretical investigations focus on simple, bare-bones EAs while applications often use more sophisticated EAs that perform well on the problem at hand. What is often unclear is whether a large degree of algorithm sophistication is necessary, and if so, how much performance is gained by adding complexity to an EA. We address this question by comparing the performance of a wide range of theory-driven EAs, from bare-bones algorithms like the (1+1) EA, a (2+1) GA and simple population-based algorithms to more sophisticated ones like the (1+(λ,λ)) GA and algorithms using fast (heavy-tailed) mutation operators, against sophisticated and highly effective EAs from specific applications. This includes a famous and highly cited Genetic Algorithm for the Multidimensional Knapsack Problem and the Parameterless Population Pyramid for Ising Spin Glasses and MaxSat. While for the Multidimensional Knapsack Problem the sophisticated algorithm performs best, surprisingly, for large Ising and MaxSat instances the simplest algorithm performs best. We also derive conclusions about the usefulness of populations, crossover and fast mutation operators. Empirical results are supported by statistical tests and contrasted against theoretical work in an attempt to link theoretical and empirical results on EAs
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