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Search Results: 1 - 10 of 432426 matches for " S. K. Singh "
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Evaluation of Electrocardiogram for Biometric Authentication  [PDF]
Yogendra Narain Singh, S K Singh
Journal of Information Security (JIS) , 2012, DOI: 10.4236/jis.2012.31005
Abstract: This paper presents an evaluation of a new biometric electrocardiogram (ECG) for individual authentication. We report the potential of ECG as a biometric and address the research concerns to use ECG-enabled biometric authentication system across a range of conditions. We present a method to delineate ECG waveforms and their end fiducials from each heartbeat. A new authentication strategy is proposed in this work, which uses the delineated features and taking decision for the identity of an individual with respect to the template database on the basis of match scores. Performance of the system is evaluated in a unimodal framework and in the multibiometric framework where ECG is combined with the face biometric and with the fingerprint biometric. The equal error rate (EER) result of the unimodal system is reported to 10.8%, while the EER results of the multibiometric systems are reported to 3.02% and 1.52%, respectively for the systems when ECG combined with the face biometric and ECG combined with the fingerprint biometric. The EER results of the combined systems prove that the ECG has an excellent source of supplementary information to a multibiometric system, despite it shows moderate performance in a unimodal framework. We critically evaluate the concerns involved to use ECG as a biometric for individual authentication such as, the lack of standardization of signal features and the presence of acquisition variations that make the data representation more difficult. In order to determine large scale performance, individuality of ECG remains to be examined.
Environmental Assessment of Infrastructure Projects of Water Sector in Baghdad, Iraq  [PDF]
Allaa M. Aenab, S. K. Singh
Journal of Environmental Protection (JEP) , 2012, DOI: 10.4236/jep.2012.31001
Abstract: In 1970s the city of Baghdad had a good infrastructure. Education and healthcare systems were widely regarded as the best in the Middle East. Income per capita rose to over US$3600 in the early 1980s. Since that time, successive wars and a repressive, state-dominated economic system have stifled economic growth and development and debilitated basic infrastructure and social services. At the end of the 2003 war, Baghdad’s infrastructure was seriously degraded. The majority of the population had limited or inadequate access to essential basic services. Currently, there is an ongoing effort by donor countries, such as the United States (US) (through the US Agency for International Development (USAID)), Japan, the European Union (EU), etc., as well as efforts by multilateral agencies such as the United Nations Children’s Fund (UNICEF), the United Nations Development Programme (UNDP), the International Committee of the Red Cross (ICRC), and Non Governmental Organizations (NGOs), to restore the sector to standards that existed prior to the latest conflict. The present study deals with the evaluation of four projects proposed to improve the deteriorating status of water and wastewater treatment plants. Three methods viz. checklist, strategic environment assessment and cost and benefit analysis are used to evaluate the efficiency of the projects.
Evaluation of Drinking Water Pollution and Health Effects in Baghdad, Iraq  [PDF]
Allaa M. Aenab, S. K. Singh
Journal of Environmental Protection (JEP) , 2012, DOI: 10.4236/jep.2012.36064
Abstract: Contamination of water reserves by biological, chemical, and radiologic agents may affect the health of millions of residents in the Iraq as well as many others throughout the world. Fatal outbreaks of cholera struck several provinces of the country, including Baghdad. The United Nations Environment Programme (UNEP) also says air pollution, resulting from burning oil and aggravated by war, is cause for concern. The study area Baghdad has been divided into two parts: Central Baghdad and Outskirts of Baghdad (included in Baghdad but near the boundaries of Baghdad). The outskirts of Baghdad comprises of 4 cities: Al-Hussaniya located in northern part of Baghdad, Abu-Gurabe located in the western side of Baghdad, Jissr Diyala located in the eastern side of Baghdad and finally Al-Mahmodiya located in the southern side of Baghdad. These cities are in very poor situation in terms of water supply. The quality of water supplied is bad as no attention is given to WTP's in these places, which is also because of the fact that given the insecure war conditions, these areas are inaccessible. The sewage is thrown directly into the river because these areas do not have sewage treatment plants. In case of central Baghdad the water supply and sewerage network are broken in some places. Due to this there is mixing of water between the two networks. For this study we taking water supply samples and collect all the samples from WTPs and water supply network (houses, shops and different places). We made the analysis to parts first bacteriologies, second chlorine and after analysis these samples in lab we will give in our study numbers of fail samples, type of diseases and how many case during year 2007 in Baghdad City. Also in this study we will give Estimated Deaths from Water-Related Diseases 2010 to 2035.
Simulink Based Analysis and Realization of Solar PV System  [PDF]
S. Badie Asghar, R. K. Singh
Energy and Power Engineering (EPE) , 2015, DOI: 10.4236/epe.2015.711051
Abstract: Non-conventional energy resources are increasingly used to fulfill load demands. Before using such energy sources, the very important thing is analysis at the basic level. This paper presents analysis and realization of solar PV system. The current-voltage and power-voltage characteristics of solar PV array changes as parameters like solar insolation, and temperature changes. These characteristics are found and realized by using MATLAB software.
Comparative Study of Transpiration in Cooling Effect of Tree Species in the Atmosphere  [PDF]
S. K. Gupta, Jeet Ram, Hukum Singh
Journal of Geoscience and Environment Protection (GEP) , 2018, DOI: 10.4236/gep.2018.68011
Abstract: Trees create microclimate under their crowns in comparison to the outside ambient atmosphere, which is a result of physical as well as physiological functions of the tree. The cooling produced by trees varies with species due to variation in several anatomical, structural and physiological attributes of the species. Transpiration is one of the most significant physiological functions performed by plants, which affects cooling produced by a tree under its shade. When solar energy impinges on the leaf, water emerges from its surface through transpiration taking the latent heat to convert it into water vapour. This leads to a rise in humidity of the atmosphere and reduction in temperature of the leaf. To remain leaf in equilibrium, it takes heat from the surrounding atmosphere resulting in reduction in temperature of surroundings. Since, transpiration takes place through stomata which are normally located on the ventral side of the leaf, this reduction in temperature is more experienced beneath the crown of the tree. Therefore, the present study was carried out to analyze the role of transpiration in cooling effect of five forestry tree species. The cooling produced by tree species under their shades has been found positively correlated to the transpiration rate whereas the rate of transpiration has responded positively to the ambient temperature and water conductance. However, no definite relationship has been found between frequency of open stomata and the rate of transpiration.
Audiological Evaluation in Goitrous Hypotyhroidism  [PDF]
M. K. Aggarwal, Gautam Bir Singh, Ranjan K. Nag, S. K. Singh, Rajesh Kumar, Mayank Yadav
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2013, DOI: 10.4236/ijohns.2013.25042
Abstract: Objective: To determine the incidence of deafness in patients suffering from goiterous hypothyroidism exclusively and to evaluate the role of L-thyroxine therapy in improving the hearing in this group of patients. Study Design: A prospective cohort study. Materials and Methods: Hearing status was evaluated in a sample size of 100 consecutive patients reporting to the ENT/Endocrinology department of Institute of Medical Sciences, Banaras Hindu University, Varanasi, UP with the diagnosis of goitrous hypothyroidism. The study group included patients in the age group of 5 to 65 years belonging to either sex. Patients with detected hearing loss were categorized into group A, and all other patients were designated group B. L-Thyroxine treatment for goitrous hypothyroidism was initiated in all the cases. At the end of 6 months, a repeat audiogram was done in all the patients in order to evaluate the efficacy of the said treatment protocol on the hearing in these patients. The data were tabulated and statistically analysed using Paired Students “t” test. Results: An overall 39% hearing loss was observed in patients with goitrous hypothyroidism. 15% cases had sensorineural hearing loss, 13% had mixed hearing loss and 8% had a conductive hearing loss. A statistically significant hearing improvement was recorded in this study by L-thyroxine treatment in group-A, and no deterioration of hearing was recorded in group-B. Conclusions: The incidence of sensorineural hearing is less in patients with goitrous hypothyroidism (15%) as compared with the overall incidence of sensorineural hearing loss reported for hypothyroidism (30%-40%). Further, there is a definitive improvement in hearing with the use of L-thyroxine treatment of goitrous hypothyroidism.
Microwave Scattering for Soil Texture at X-Band and Its Retrieval Using Genetic Algorithm  [PDF]
Rajesh Tiwari, R. K. Singh, D. S. Chauhan, O. P. Singh, R. Prakash, D. Singh
Advances in Remote Sensing (ARS) , 2014, DOI: 10.4236/ars.2014.33010
Abstract: In the present paper, we have studied the effect of soil textures, i.e., sand, silt and clay on microwave scattering at X-band (10 GHz) at various incidence angles and like polarizations (i.e., Horizontal-Horizontal; HH-, Vertical-Vertical; VV-). We have proposed a retrieval technique based on Genetic Algorithm (GA) to retrieve soil texture. For this purpose, ten types of soil mixtures having different percentage of sand, silt and clay have been analyzed. The observations were carried out by ingeniously assembled X-band scatterometer. A good agreement has been noticed between estimated and observed soil texture. Study infers that soil texture is quite sensitive to radar scattering and it is possible to retrieve soil texture with radar/scatterometer data with good accuracy and this type of retrieved results can be helpful to predict soil strength as well as soil erosion of the particular area.
Removal of Malathion from Aqueous Solutions and Waste Water Using Fly Ash  [PDF]
Vinay K. Singh, Ravi S. Singh, Prem N. Tiwari, Jai K. Singh, Fethiye Gode, Yogesh C. Sharma
Journal of Water Resource and Protection (JWARP) , 2010, DOI: 10.4236/jwarp.2010.24037
Abstract: Fly ash, obtained from a thermal power plant, Anpara, Sonebhadra, India has been used as an effective ad-sorbent for the removal of malathion from aqueous solutions. The time required to attain equilibrium was found to increase from 40 to 60 minutes as the initial malathion concentration increases from 1 to 10 mg/L. The optimum pH value for adsorption was 4.50. The removal of malathion increased by increasing the tem-perature indicating endothermic nature of removal process. The fly ash exhibited first order rate kinetics and followed both Langmuir and Freundlich isotherm models. Endothermic nature of adsorption process was further supported from increasing values of Langmuir and Freundlich constants with increase in temperature. The adsorbent can be used as an economical product for the removal of malathion from wastewater also. A comparison of the adsorption capacity of fly ash with other adsorbents shows that fly ash can be used for the removal of malathion from aqueous solutions.
Effect of flunixin meglumine alone and in combination on haemodynamics during bovine endotoxic shock and after treatment  [PDF]
D. V. Singh, S. K. Bansal, G. S. Ghumman
Journal of Biomedical Science and Engineering (JBiSE) , 2011, DOI: 10.4236/jbise.2011.41004
Abstract: To investigate the effect of Flunixin meglumine- a NSAID; alone and in combination with hypertonic saline on endotoxemic buffalo calves, two groups of five apparently healthy male buffalo calves aged be-tween 6-8 months were subjected to I.V. infusion of E.coli endotoxin at the rate of 5μg/kg BW per hour for 3 hours. A highly significant (P < 0.01) fall in mean systolic,diastolic, pulse, mean arterial pressure (M.A.P), central venous pressure (C.V.P) and haemo-globin was observed till the end of endotoxin infusion while respiratory rate was significantly elevated along with a non-significant alteration in rectal tem-perature and hematocrit during the infusion of en-dotoxin. Immediately at the end of endotoxin infusion, flunixin meglumine at the rate of 1.1 mg/kg B.W was infused i.v. in group-I animals and group-II animals were infused with hypertonic saline solution (H.S.S.) at the rate of 4 ml/Kg BW as one time infusion fol-lowed by flunixin meglumine at the rate of 1.1 mg/kg B.W which resulted in increase of various parameters either to normal or very close to normal value while the rectal temperature and haematocrit decreased non-significantly throughout the observation period of 7 hours. No improvement in Hb and respiration was observed consequent to FM administration. Both treatments successfully raised systolic, diastolic, pulse pressure, C.V.P & M.A.P to normal pre-infusion val-ues. From the results of the present investigation, it can be concluded that i.v. infusion of FM alone and in combination with hypertonic saline solution in en-dotoxemic buffalo calves effectively restores the various hemodynamic parameters close to normal pre-infusion values and it can be used as immediate resuscitation measure to provide the clinician valu-able time to plan further long term treatment.
Microwave-assisted chemical reduction routes for direct synthesis of Fe–Pt nanoparticles in ordered face centered tetragonal L10 phase
S. Acharya,K. Singh
Applied Nanoscience , 2011, DOI: 10.1007/s13204-011-0012-5
Abstract: In the present work, microwave-assisted chemical reduction route has been explored for the direct synthesis of face centered tetragonal (fct) L10 phase of Fe–Pt nanoparticles. Effects of microwave power and irradiation time on the growth process were investigated. Using this facile and high yield technique we could tune particle size from 7 to 17 nm. The as-prepared Fe–Pt NPs were observed in ordered fct L10 phase without any post-synthesis treatment. The particle size and magnetic properties of the as-prepared Fe–Pt were found to be very sensitive to the microwave irradiation power, while influence of exposure time was insignificant. The hysteresis measurements were performed at room temperature (300 K) to study magnetic properties of as-synthesized Fe–Pt as a function of crystallite size. All specimens of Fe–Pt were found to exhibit ferromagnetic behavior at room temperature. Coercivity and saturation magnetization were observed to be decreasing with diminishing particle size. The microwave-assisted route is found to be a simple technique for direct synthesis of metal alloys and may prove to be a potential tool of high density data storage materials such as Fe–Pt.
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