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In recent years, there is a rapid advancement in Information and Communication Technology (ICT). However, the explosive growth of ICT and its many applications in education, health, agriculture etc. are confined to a limited number of privileged people who have both language and digital literacy. At present the repositories in Internet are mainly in English, as a consequence users unfamiliar to English...
An all-solid LMA Bragg fibre (mode area exceeding 1100 μm2) is presented for mid-infrared applications, based on a new design strategy that induces large differential loss between fundamental and higher order modes for effective single-mode operation.
The reliability of InP/GaAsSb/InP DHBTs designed for very high-speed ICs applications is studied after storage accelerated aging tests performed up to 2000 hours at ambient temperatures of 180, 210 and 240°C. The HiCuM model was used for modelling DC electrical characteristics measured during aging tests. The signature of the major degradation mechanism points out an evolution of the emitter access...
NCAR's Bluefire supercomputer is instrumented with a set of low-overhead processes that continually monitor the floating point counters of its 3,840 batch-compute cores. We extract performance numbers for each batch job by correlating the data from corresponding nodes. From experience and heuristics for good performance, we use this data, in part, to identify poorly performing jobs and then work with...
The NCAR-Wyoming Supercomputing Center (NWSC) will begin operating in June 2012, and will house NCAR's next generation HPC system. The NWSC will support a broad spectrum of Earth Science research drawn from a user community with diverse requirements for computing, storage, and data analysis resources. To ensure that the NWSC satisfies the needs of this community, the procurement benchmarking process...
Mitochondria are the most important source of Reactive Oxygen species. Superoxide anion produced by mitochondria leads to damage to membranes impairing the ability of mitochondria to synthesize ATP and to carry out their wide range of metabolic functions. Thus mitochondria are both the source as well as the target for ROS. Oxidative stress generated in ischemia-reperfusion and other neurodegenerative...
For ubiquitous wireless sensor networks, there are three main requirements. The devices must be extremely small, consume very little operating power, and capable of distributed signal processing to enable in situ processing of sensed data at leaf nodes of the network. This paper presents the design of an Asynchronous Digital Signal Processor (ASPEN) to realize these goals. Using Quasi-delay insensitive...
The last four decades have seen the development of several mathematical models describing different aspects of blood glucose regulation, mainly the dynamics of glucose metabolism and the insulin action on glucose production and utilization. One of these models, developed by Ghosh and Maka involves representation of the glucose-insulin dynamics by a (piecewise affine) PWA model. The PWA modeling allows...
External stressors like parasites cause alteration in the metabolic pathways of the host. Monitoring the small molecular weight metabolites in the tissue or biofluid offer a convenient approach to understand these alterations. In this paper, we report a urine 1H NMR based metabonomic study to understand the alterations in the human host during the infection of the malarial parasite Plasmodium vivax...
This paper investigates the effect of generation technology on the participation of adjacent synchronous machines in electromechanical oscillations. It is shown that its possible to predict the generator with maximum participation in the inter-area mode as a result of incoming doubly fed induction generator (DFIG) technology. Due to the changes in generator participation, as a result of system changes...
Manufacturing of 3D stacked IC chips has became feasible recently. But testing of these 3D ICs is becoming important in the semiconductor industry. Now a days also embedded core based 3D ICs are equally popular. Hence the increased complexity in the chips becomes a constraint for the test engineers. This paper addresses a 1500-style wrapper optimization in 3D ICs based on Through Silicon Vias(TSVs)...
This paper investigates the implementation of output-delayed feedback control (ODFC) technique for controlling the sway angle of single pendulum gantry crane (SPGC) system. Linearized mathematical model of the SPGC in state space form is considered for the investigation. The designed ODFC has undergone complete stability analysis for a given controller gain.
This paper provides a probabilistic characterization of the stress index B2 which can be used for developing reliability-based design guidelines for nuclear bend pipes. The design equations for pipe bends involve stress indices (B1 and B2) that are used to modify the stress parameters used for straight pipes. These indices allow a designer to use the same basic stress limits as for a straight pipe...
Electricity is generated based on potential resources like coal, crude oil, water, wind, solar and nuclear energy. India depends largely on thermal power using coal as raw material despite the reality that indigenous stock of this raw material is depleting fast. At the same time coal based thermal stations are losing out financial viability gradually in terms of deteoriating efficiency, transmission...
Dataflow testing of programs ensures the execution of data dependencies between locations in the code (1) where variables are assigned values, and (2) where these definitions are used. Such data dependencies are called Def-Use Associations (DUAs). In an aspect-oriented (AO) program, aspects and classes interact in several ways, such as (1) through parameters passed from advised methods in a class...
Partial discharge (PD) is one of the major contributors of the problem in high voltage electrical system. It can cause the insulation of a high voltage equipment to fail and lead to catastrophic incident. In a power transformer, detection of PD using acoustic emission technique has been gaining popularity due to its nonintrusive application and capability of locating PD sources. In this research work,...
The paper proposes high speed FPGA implementations of adders and multipliers in Fp. The work shows through experimental results that due to optimized addition chain available in such devices, Karatsuba decomposition upto a particular level improves the performance. Further the paper modifies existing interleaved multiplier using Montgomery ladder and the high speed adder circuits. Extensive experiments...
White meat basically comprises of poultry products. Due to its health hazard many people are shunning away from red meat. The primary source of white meat is poultry farming where the practice of raising fowls, such as chickens, turkeys, ducks etc is carried out.. The entire requirement of white meat and eggs mostly come from these poultry products. The primary threat to poultry farming is avian influenza...
Extending the wireless sensor network's lifetime has been the aim of several research efforts. Distributed in-network processing arises as a viable solution to extend the network's lifetime. It avoids assigning heavy computations to a single node which might otherwise lead to its significant energy depletion. Task scheduling and allocation play a major role in the efficiency of the distribution. This...
In this work we are proposing a light-weight energy-aware distributed LU decomposition on energy-constrained wireless sensor networks (WSN). This work builds a complete scheme for the distribution; it involves an efficient block-based distribution of the LU decomposition, a simple energy-aware task mapping, a light-weight TDMA transmission schedule where each node can infer its transmission time slot...
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