279 research outputs found

    Study on Toxic Impact of Sugar Factory Effluent on the Gill of the Fresh Water Fish Rasbora Daniconius

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    The fresh water fish Rasbora daniconius were exposed to two sublethal concentration of sugar factory effluent for 4 weeks studied. The concentration were record 1/5(2.2%) and 1/10(1.1%) of the 96 hrs LC 5O values of sugar factory effluent. The gills of R. daniconius showed the curling and degeneration and breaking of epithelium cells of the secondary gill lamellae, destruction of blood cells, blood capillaries and nuclei were the prominent features of the gill

    Identify and Rectify the Distorted Fingerprints

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    Elastic distortion of fingerprints is the major causes for false non-match. While this cause disturbs all fingerprint recognition applications, it is especiallyrisk in negative recognition applications, such as watch list and deduplication applications. In such applications, malicious persons may consciously distort their fingerprints to hide identification. In this paper, we suggested novel algorithms to detect and rectify skin distortion based on a single fingerprint image. Distortion detection is displayed as a two-class categorization problem, for which the registered ridge orientation map and period map of a fingerprint are beneficial as the feature vector and a SVM classifier is trained to act the classification task. Distortion rectification (or equivalently distortion field estimation) is viewed as a regression complication, where the input is a distorted fingerprint and the output is the distortion field. To clarify this problem, a database (called reference database) of various distorted reference fingerprints and corresponding distortion fields is built in the offline stage, and then in the online stage, the closest neighbor of the input fingerprint is organized in the reference database and the corresponding distortion field is used to transform (Convert) the input fingerprint into a normal fingerprints. Promising results have been obtained on three databases having many distorted fingerprints, namely FVC2004 DB1, Tsinghua Distorted Fingerprint database, and the NIST SD27 latent fingerprint database

    “Implementation on Distorted Fingerprints”

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    Flexible distortion of fingerprints is the main origin of false non-match. While this origin disturbs all fingerprint recognition applications, it is mainly risk in negative recognition applications, such as watch list duplication applications. In such things, malignant user mayconsciously distort their fingerprints to hide his originality or identification. This paper, suggested novel algorithms to identify and modify skin distortion based on a single fingerprint image. Distortion detection is displayed as a two-class categorization problem, for which the registered ridge orientation map and period map of a fingerprint are beneficial as the feature vector and a SVM classifier is trained to act the classification task. Distortion rectification (or equivalently distortion field estimation) is viewed as a regression complication, where provide the input as a distorted fingerprint and generate the output as distortion field. To clarify this Problem, offline and online stages are important. A database (called reference database) of various distorted reference fingerprints and corresponding distortion fields is built in the offline stage, and then in the online stage, the closest neighbor of the input fingerprint is organized in the reference database and the corresponding distortion field is used to transform (Convert) the input distorted fingerprint into a normal undistorted fingerprints

    Developments in Control of Time-Delay Systems for Automotive Powertrain Applications

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    To provide an overview of several application problems in the area of automotive powertrain control, which can greatly benefit from applications of analysis and control design methods developed for time-delay systems. The application considered concern, the idle speed control (ISC) in gasoline engines. The nature of the delay and the role played by them in these application is highlighted and the imposed performance limitations are discussed. Links are provided with theoretical literature on the analysis and control of time-delay systems and modeling details are discussed to a level that will permit other researchers to use the associated models for simulation case studies

    Effect of Additives on Liner Properties of Case-bonded Composite Propellants

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    A thin layer of liner is applied to ensure a good bond between the insulator and the propellant in case-bonded rocket motors. It also acts as a protective shield for the insulatorby providing a limited fire protection effect. Liner compositions should preferably be based on the same binder system used in the propellant formulations. As the liner has to hold the propellant and the insulator without debond under all the environmental conditions, it plays a key role in predicted performance of a rocket motor. Hence, studies were carried out to improve the liner properties using various hydroxyl compounds, such as butanediol, cardanol, trimethylol propane, pyrogallol, etc as additives. Butanediol and phloroglucinol combination gave the best results in terms of mechanical properties and interface properties for the liner compositions. The effect of filler content on the liner properties was also studied. The results showed that higher filler content does not affect interface properties. Considering the fire retardancy effect and reinforcement of antimony trioxide (S£203), the formulation containing higher Sb2O3 was selected. The studies on pot life/castable life of liner showed that propellant could be cast up to 6 days after liner coating, without adversely affecting the bonding and the bond strength

    The Computational Power of Optimization in Online Learning

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    We consider the fundamental problem of prediction with expert advice where the experts are "optimizable": there is a black-box optimization oracle that can be used to compute, in constant time, the leading expert in retrospect at any point in time. In this setting, we give a novel online algorithm that attains vanishing regret with respect to NN experts in total O~(N)\widetilde{O}(\sqrt{N}) computation time. We also give a lower bound showing that this running time cannot be improved (up to log factors) in the oracle model, thereby exhibiting a quadratic speedup as compared to the standard, oracle-free setting where the required time for vanishing regret is Θ~(N)\widetilde{\Theta}(N). These results demonstrate an exponential gap between the power of optimization in online learning and its power in statistical learning: in the latter, an optimization oracle---i.e., an efficient empirical risk minimizer---allows to learn a finite hypothesis class of size NN in time O(logN)O(\log{N}). We also study the implications of our results to learning in repeated zero-sum games, in a setting where the players have access to oracles that compute, in constant time, their best-response to any mixed strategy of their opponent. We show that the runtime required for approximating the minimax value of the game in this setting is Θ~(N)\widetilde{\Theta}(\sqrt{N}), yielding again a quadratic improvement upon the oracle-free setting, where Θ~(N)\widetilde{\Theta}(N) is known to be tight

    A study to assess effectiveness of video assisted teaching programme on gastro intestinal tract assessment among student nurses of tertiary care hospital: a statistical approach

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    Background: The gastro intestinal is important system in the human body. Many times it is found that its uneasy for student nurses to check the patient. So, there is need to improve the available learning programmes regarding gastro intestinal tract assessment.So, it was necessary to conduct this study for educating student nurses regarding the gastro intestinal tract assessment to improve their knowledge. The objectives of this study were to assess the knowledge of student nurses regarding gastro-intestinal tract assessment and to evaluate the effectiveness of video assisted teaching programme on knowledge regarding gastro intestinal tract assessment.Methods: Material and methods used for the study is the evaluative approach; one group pre test, post test design was used. Study was conducted on sample of 70 student nurses by using convenient sampling technique. The data were collected by structured questionnaire. The data were analyzed using descriptive and inferential statistics.Results: The mean knowledge score of student nurses during the pre-test was 39.89% where as it had raised up to 72% during the post-test regarding gastro intestinal tract assessment as effectiveness of video assisted teaching programme. Therefore, the difference assessed was 32.11% between pre-test and post-test.Conclusions: There was significant difference between the pre-test knowledge level and post-test knowledge level of student nurses on gastro intestinal tract assessment. Hence health education programs and on-going teaching both can further improve the knowledge of student nurses

    Examining the Social Determinants of Health in Urban Communities: A Comparative Analysis

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    This comparative analysis investigates the social determinants of health (SDOH) in urban communities, aiming to discern disparities and inform targeted interventions and policies. With a focus on three key determinants socioeconomic status, housing and neighborhoods, and access to healthcare the study examines selected urban communities to illuminate the intricacies of health disparities within these contexts. The paper commences with an exploration of the background and significance of SDOH, emphasizing the crucial role they play in shaping health outcomes. The literature review provides a comprehensive overview of SDOH, offering insights into historical perspectives and unique challenges faced by urban communities.The methodology section outlines the criteria for selecting urban communities, the sources of data, and the ethical considerations guiding the research. A comparative framework is established, incorporating metrics such as income disparities, educational attainment, housing quality, neighborhood environments, and access to healthcare facilities. The analysis of these determinants reveals patterns, trends, and significant disparities among the selected urban communities, shedding light on the multifaceted nature of health inequalities.The findings section summarizes the key results, emphasizing the implications for public health. Policy recommendations and targeted interventions are discussed, emphasizing the importance of addressing SDOH to enhance overall community well-being. This comparative analysis underscores the imperative of considering SDOH in urban contexts and provides a foundation for future research and action. By delving into the intricacies of health disparities, this study contributes valuable insights to the ongoing discourse on public health, urging a comprehensive and nuanced approach to address the root causes of health inequities in urban communities

    Filled Ethylene-propylene Diene Terpolymer Elastomer as ThermalInsulator for Case-bonded Solid Rocket Motors

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    Ethylene-propylene diene terpolymer (EPDM)-based insulation system is being globallyused for case-bonded solid rocket motors. A study was undertaken using EPDM as base polymer,blended with hypalon and liquid EPDM and filled with fibrous and non-fibrous fillers. Theseformulations were evaluated as rocket motor insulation system. The basic objective of the studywas to develop an insulation system based on EPDM for case-bonded applications. A series ofrocket motor insulator compositions based on EPDM, filled with particulate and fibrous fillerslike precipitated silica, fumed silica, aramid, and carbon fibres have been studied for mechanical,rheological, thermal, and interface properties. Compositions based on particulate fillers wereoptimised for the filler content. Comparatively, fumed silica was found to be superior as fillerin terms of mechanical and interface properties. Addition of fibrous filler (5 parts) improved thepeel strength, and reduced the thermal conductivity and erosion rate. All the compositions wereevaluated for sulphur and peroxide curing. Superior mechanical properties were achieved forsulphur-cured products, whereas peroxide-cured products exhibited an excellent ageing resistance.Rocket motors were insulated with optimised composition and propellant cast, and the motorswere evaluated by conducting static test in end-burning mode.Defence Science Journal, 2008, 58(1), pp.94-102, DOI : http://dx.doi.org/10.14429/dsj.58.162

    Health Policy Implementation in Developing Nations: Challenges and Solutions

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    Putting health plans into action in poor countries is hard for many reasons, which makes it harder to provide good healthcare to the people who live there. Policies are often hard to put into action because of a lack of money, facilities, and skilled healthcare workers. Also, government uncertainty and corruption can make health projects less effective than they were meant to be.  One major obstacle is the insufficient funding allocated to health programs, leading to inadequate facilities and a shortage of essential medical supplies. This financial constraint exacerbates the difficulty of attracting and retaining qualified healthcare professionals, perpetuating a cycle of suboptimal healthcare delivery.Infrastructure deficiencies, including poor road networks and limited access to remote areas, further compound implementation challenges. These obstacles impede the timely and equitable distribution of healthcare services, disproportionately affecting rural and marginalized communities.Political instability and corruption introduce an additional layer of complexity, compromising the integrity of health policy implementation. Unstable political environments often result in inconsistent policy frameworks, hindering long-term planning and sustainable healthcare improvements. Corruption erodes trust in the healthcare system, discouraging public participation and impeding the successful execution of health policies.To address these challenges, a multi-faceted approach is essential. Increased international collaboration and financial assistance can alleviate resource constraints, while targeted capacity-building initiatives can bolster the healthcare workforce. Improved infrastructure development, especially in rural areas, is crucial for ensuring widespread access to healthcare services. Additionally, fostering political stability and implementing anti-corruption measures are vital steps toward creating an enabling environment for successful health policy implementation in developing nations
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