38 research outputs found

    Constraints in adoption of composite carp culture in central Brahmaputra valley zone of Assam - a perceptual framework

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    The study was conducted in Nagaon district under central Brahmaputra valley zone of Assam to find out the perceptual constraints of the fish farmers in adoption of composite carp culture practice. A representative sample of 60 fish farmers of the district was selected using random sampling. The levels of agreement of respondents in relation to 32 identified constraints in adoption of composite fish culture were determined using 5 point Likert scale. The mean value of degree of responsiveness to constraints was analyzed to find out the perception of the farmers and found lack of fish feed at cheaper rate (3.45) as major constraint followed by high initial cost of digging of ponds (3.28). Seven factors of constraints have been identified through factor analysis such as extension support system constraints, knowledge constraints, financial constraints,distribution constraints, infrastructural constraints, agro-climatic constraints and situational constraints. With the constraints as perceived by the farmers, some relevant strategies have been suggested such as integrated effort to provide better quality fish seed at proper time at pond site of farmers through judicious carp breeding and hatchery management and proper distribution system; strengthening research extension linkage; organizing need based short and long-term training programme and on farm demonstration programme on various aspects of fish culture practices both for farmers and extension workers; establishment of ‘One stop Aqua Shop’(OAS) as single outlet in strategic locations to make available all inputs required for fish culture; formation of fish producer’s consortium to provide a dependable market support and a suitable delivery system for providing inputs to the fish farmers in time and better provision of institutional credit

    The Long-Baseline Neutrino Experiment: Exploring Fundamental Symmetries of the Universe

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    The preponderance of matter over antimatter in the early Universe, the dynamics of the supernova bursts that produced the heavy elements necessary for life and whether protons eventually decay --- these mysteries at the forefront of particle physics and astrophysics are key to understanding the early evolution of our Universe, its current state and its eventual fate. The Long-Baseline Neutrino Experiment (LBNE) represents an extensively developed plan for a world-class experiment dedicated to addressing these questions. LBNE is conceived around three central components: (1) a new, high-intensity neutrino source generated from a megawatt-class proton accelerator at Fermi National Accelerator Laboratory, (2) a near neutrino detector just downstream of the source, and (3) a massive liquid argon time-projection chamber deployed as a far detector deep underground at the Sanford Underground Research Facility. This facility, located at the site of the former Homestake Mine in Lead, South Dakota, is approximately 1,300 km from the neutrino source at Fermilab -- a distance (baseline) that delivers optimal sensitivity to neutrino charge-parity symmetry violation and mass ordering effects. This ambitious yet cost-effective design incorporates scalability and flexibility and can accommodate a variety of upgrades and contributions. With its exceptional combination of experimental configuration, technical capabilities, and potential for transformative discoveries, LBNE promises to be a vital facility for the field of particle physics worldwide, providing physicists from around the globe with opportunities to collaborate in a twenty to thirty year program of exciting science. In this document we provide a comprehensive overview of LBNE's scientific objectives, its place in the landscape of neutrino physics worldwide, the technologies it will incorporate and the capabilities it will possess.Comment: Major update of previous version. This is the reference document for LBNE science program and current status. Chapters 1, 3, and 9 provide a comprehensive overview of LBNE's scientific objectives, its place in the landscape of neutrino physics worldwide, the technologies it will incorporate and the capabilities it will possess. 288 pages, 116 figure

    Research and Design of a Routing Protocol in Large-Scale Wireless Sensor Networks

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    无线传感器网络,作为全球未来十大技术之一,集成了传感器技术、嵌入式计算技术、分布式信息处理和自组织网技术,可实时感知、采集、处理、传输网络分布区域内的各种信息数据,在军事国防、生物医疗、环境监测、抢险救灾、防恐反恐、危险区域远程控制等领域具有十分广阔的应用前景。 本文研究分析了无线传感器网络的已有路由协议,并针对大规模的无线传感器网络设计了一种树状路由协议,它根据节点地址信息来形成路由,从而简化了复杂繁冗的路由表查找和维护,节省了不必要的开销,提高了路由效率,实现了快速有效的数据传输。 为支持此路由协议本文提出了一种自适应动态地址分配算——ADAR(AdaptiveDynamicAddre...As one of the ten high technologies in the future, wireless sensor network, which is the integration of micro-sensors, embedded computing, modern network and Ad Hoc technologies, can apperceive, collect, process and transmit various information data within the region. It can be used in military defense, biomedical, environmental monitoring, disaster relief, counter-terrorism, remote control of haz...学位:工学硕士院系专业:信息科学与技术学院通信工程系_通信与信息系统学号:2332007115216

    21st DAE-BRNS High Energy Physics Symposium 2014

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    The DAE-BRNS High Energy Physics Symposium is a conference series held every other year in India, supported by the Board of Research in Nuclear Sciences (BRNS), Department of Atomic Energy (DAE), India. The symposium is considered as one of the premiere symposiums organized in India in the field of elementary particle physics. Around 350 physicists and researchers are expected to participate in this symposium to discuss the latest advancements in the fields of particle physics, astro-particle physics, cosmology, development of new detector technology and accelerator. The XXI edition of the DAE-BRNS High Energy Physics Symposium will be held in the picturesque campus of the Indian Institute of Technology Guwahati during 8 – 12 December, 2014

    Study on the effect of hydrogen addition on the variation of plasma parameters of argon-oxygen magnetron glow discharge for synthesis of TiO2 films

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    We report the effect of hydrogen addition on plasma parameters of argon-oxygen magnetron glow discharge plasma in the synthesis of H-doped TiO2 films. The parameters of the hydrogen-added Ar/O2 plasma influence the properties and the structural phases of the deposited TiO2 film. Therefore, the variation of plasma parameters such as electron temperature (Te), electron density (ne), ion density (ni), degree of ionization of Ar and degree of dissociation of H2 as a function of hydrogen content in the discharge is studied. Langmuir probe and Optical emission spectroscopy are used to characterize the plasma. On the basis of the different reactions in the gas phase of the magnetron discharge, the variation of plasma parameters and sputtering rate are explained. It is observed that the electron and heavy ion density decline with gradual addition of hydrogen in the discharge. Hydrogen addition significantly changes the degree of ionization of Ar which influences the structural phases of the TiO2 film

    Diabetic myonecrosis: An underreported complication of diabetes mellitus

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    Diabetic myonecrosis is an underreported complication of long-standing, poorly controlled diabetes mellitus which is usually self-limiting and responds well to conservative management. Patients frequently have microvascular complications, and although short-term prognosis is good, the long-term prognosis is poor. We report four cases of diabetic myonecrosis admitted in a tertiary care hospital

    Measurement of the B+/B0B^+/B^0 production ratio in e+ee^+e^- collisions at the Υ(4S)\Upsilon(4S) resonance using BJ/ψ()KB \rightarrow J/\psi(\ell\ell) K decays at Belle

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    We measure the ratio of branching fractions for the Υ(4S)\Upsilon (4S) decays to B+BB^+B^- and B0Bˉ0B^0\bar{B}{}^0 using B+J/ψ()K+B^+ \rightarrow J/\psi(\ell\ell) K^+ and B0J/ψ()K0B^0 \rightarrow J/\psi(\ell\ell) K^0 samples, where J/ψ()J/\psi(\ell\ell) stands for J/ψ+J/\psi \to \ell^+\ell^- (=e\ell = e or μ\mu), with 711711 fb1^{-1} of data collected at the Υ(4S)\Upsilon(4S) resonance with the Belle detector. We find the decay rate ratio of Υ(4S)B+B\Upsilon(4S) \rightarrow B^+B^- over Υ(4S)B0Bˉ0\Upsilon(4S) \rightarrow B^0\bar{B}{}^0 to be 1.065±0.012±0.019±0.0471.065\pm0.012\pm 0.019 \pm 0.047, which is the most precise measurement to date. The first and second uncertainties are statistical and systematic, respectively, and the third uncertainty is systematic due to the assumption of isospin symmetry in BJ/ψ()KB \to J/\psi(\ell\ell) K

    Measurement of branching fractions of Λc+pKS0KS0\Lambda_c^+\to{}pK_S^0K_S^0 and Λc+pKS0η\Lambda_c^+\to{}pK_S^0\eta at Belle

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    We present a study of a singly Cabibbo-suppressed decay Λc+pKS0KS0\Lambda_c^+\to{}pK_S^0K_S^0 and a Cabibbo-favored decay Λc+pKS0η\Lambda_c^+\to{}pK_S^0\eta based on 980 fb1\rm fb^{-1} of data collected by the Belle detector, operating at the KEKB energy-asymmetric e+ee^+e^- collider. We measure their branching fractions relative to Λc+pKS0\Lambda_c^+\to{}pK_S^0: B(Λc+pKS0KS0)/B(Λc+pKS0)=(1.48±0.08±0.04)×102\mathcal{B}(\Lambda_c^+\to{}pK_S^0K_S^0)/\mathcal{B}(\Lambda_c^+\to{}pK_S^0)={(1.48 \pm 0.08 \pm 0.04)\times 10^{-2}} and B(Λc+pKS0η)/B(Λc+pKS0)=(2.73±0.06±0.13)×101\mathcal{B}(\Lambda_c^+\to{}pK_S^0\eta)/\mathcal{B}(\Lambda_c^+\to{}pK_S^0)={(2.73\pm 0.06\pm 0.13)\times 10^{-1}}. Combining with the world average B(Λc+pKS0)\mathcal{B}(\Lambda_c^+\to{}pK_S^0), we have the absolute branching fractions: B(Λc+pKS0KS0)=(2.35±0.12±0.07±0.12)×104\mathcal{B}(\Lambda_c^+\to{}pK_S^0K_S^0) = {(2.35\pm 0.12\pm 0.07 \pm 0.12 )\times 10^{-4}} and B(Λc+pKS0η)=(4.35±0.10±0.20±0.22)×103\mathcal{B}(\Lambda_c^+\to{}pK_S^0\eta) = {(4.35\pm 0.10\pm 0.20 \pm 0.22 )\times 10^{-3}}. The first and second uncertainties are statistical and systematic, respectively, while the third ones arise from the uncertainty on B(Λc+pKS0)\mathcal{B}(\Lambda_c^+\to{}pK_S^0). The mode Λc+pKS0KS0\Lambda_c^+\to{}pK_S^0K_S^0 is observed for the first time and has a statistical significance of > ⁣10σ>\!10\sigma. The branching fraction of Λc+pKS0η\Lambda_c^+\to{}pK_S^0\eta has been measured with a threefold improvement in precision over previous results and is found to be consistent with the world average
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