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Search Results: 1 - 10 of 246 matches for " GULSHAN TANEJA "
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Probabilistic Analysis of an Automatic Power Factor Controller with variation in Power Factor
International Journal of Engineering Science and Technology , 2012,
Abstract: In the present study, the probabilistic analysis of an automatic power factor controller (APFC) system working in industry/factory is investigated. The power factor correction of electrical loads and energy losses due to poor power factor are the problems common to all industrial companies. Therefore, the study of APFC unit is of greatimportance. Initially, the system is operative with controlled power factor. Then it may transit to state with power factor not controlled. On the failure of the system, an inspection is carried out to detect the type of failure. The system may fail due to Fuse blown off, Transformer burnt, Programming problem, Output relay faulty. In case of the first two types of failure the components are replaced and corrected; while in last two types of failures the problem is repaired and corrected. The system remains in up state with power factor controlled and power factor not controlled. The system is analyzed by making use of regenerative point technique. The various measures of system effectiveness are obtained including the profit incurred to the system. Graphs have been plotted to depict the behavior of the profit with respect to revenue/loss per unit up time when power factor controlled and when power factor not controlled, cost per unit replacement.
International Journal of Engineering Science and Technology , 2010,
Abstract: The present paper gives the comparative study with respect to the profit between two models for sulphated juice pump standby systems—one (Model I) comprising two big units and the other (Model II) comprising one big and two small units. In model I, initially one unit is operative and the other is kept as cold standby whereas in Model II, initially one big unit is operative and both the small units are kept as cold standby. Comparative study with respect to profits is made between two models taking into consideration the installation cost and consumption cost for both types of units (big as well as small). System is analysed by making use of semi-Markov processes and regenerative point technique.
Reliability and Availability Analysis of Database System with Standby Unit Provided by the System Provider
Sukhvir Singh,Dr.Rahul Rishi,Dr. Gulshan Taneja,Dr. Amit Manocha
International Journal of Soft Computing & Engineering , 2013,
Abstract: The present paper deals with the study of a database system having Primary database and hot standby database unit which is provided by the system provider itself. There is an agreement with the system provider that on the failure of the hot standby unit, another similar unit is immediately provided by him. The primary unit is a production unit and synchronized with hot standby unit through online transfer of archive redo logs. Data being saved in the primary unit gets simultaneously stored in the hot standby unit. When the primary database unit fails, the hot standby database unit becomes the production database and primary database unit goes under repair. The system is analyzed by making use of semi-Markov processes and regenerative point technique. Expression for Mean Time to System Failure, Mean Time to Failure of Primary Database Unit and Availability of Primary Unit are obtained. Graphical study has also been done.
The Use of Multi-Objective Genetic Algorithm Based Approach to Create Ensemble of ANN for Intrusion Detection  [PDF]
Gulshan Kumar, Krishan Kumar
International Journal of Intelligence Science (IJIS) , 2012, DOI: 10.4236/ijis.2012.224016
Abstract: Due to our increased dependence on Internet and growing number of intrusion incidents, building effective intrusion detection systems are essential for protecting Internet resources and yet it is a great challenge. In literature, many researchers utilized Artificial Neural Networks (ANN) in supervised learning based intrusion detection successfully. Here, ANN maps the network traffic into predefined classes i.e. normal or specific attack type based upon training from label dataset. However, for ANN-based IDS, detection rate (DR) and false positive rate (FPR) are still needed to be improved. In this study, we propose an ensemble approach, called MANNE, for ANN-based IDS that evolves ANNs by Multi Objective Genetic algorithm to solve the problem. It helps IDS to achieve high DR, less FPR and in turn high intrusion detection capability. The procedure of MANNE is as follows: firstly, a Pareto front consisting of a set of non-dominated ANN solutions is created using MOGA, which formulates the base classifiers. Subsequently, based upon this pool of non-dominated ANN solutions as base classifiers, another Pareto front consisting of a set of non-dominated ensembles is created which exhibits classification tradeoffs. Finally, prediction aggregation is done to get final ensemble prediction from predictions of base classifiers. Experimental results on the KDD CUP 1999 dataset show that our proposed ensemble approach, MANNE, outperforms ANN trained by Back Propagation and its ensembles using bagging & boosting methods in terms of defined performance metrics. We also compared our approach with other well-known methods such as decision tree and its ensembles using bagging & boosting methods.
Reclamation of Lithium Cobalt Oxide from Waste Lithium Ion Batteries to Be Used as Recycled Active Cathode Materials  [PDF]
Rakibul Qadir, Fahmida Gulshan
Materials Sciences and Applications (MSA) , 2018, DOI: 10.4236/msa.2018.91010
Abstract: Waste laptop batteries (Type-Lithium ion) have been collected and manually dismantled in the current work. Active electrode materials were scraped off from the copper current collector and polyethylene separators. The aluminum current collectors were found to be severely damaged and attached with the electrode material. It was treated with NaOH later to be recovered as Al2O3. The leaching of LiCoO2 was done by 3 M HCl aided by 5% H2O2 at 60°C from the scraped active electrode materials (LiCoO2 and graphite) leaving the graphite completely. Co was precipitated as hydroxide by the addition of NaOH and later converted to Co3O4. The remaining solution was treated with saturated Na2CO3 to acquire Li2CO3 as crystalline precipitate with high purity. The recovery of Co and Li was 99% and 30%, respectively. Co3O4 and Li2CO3were mixed in stoichiometric proportions and calcined around 950°C with air supply to achieve LiCoO2 successfully.
Assessment of the Cases Undergone Peripartum Hysterectomy in a Tertiary Care Hospital in the Last Three Years  [PDF]
Afroz Sayma, Gulshan Ara
Open Journal of Obstetrics and Gynecology (OJOG) , 2018, DOI: 10.4236/ojog.2018.811101
Abstract: Background: Emergency peripartum hysterectomy (EPH), although rare in modern obstetrics, remains a life-saving procedure in cases of severe hemorrhage. Objective: To assess the incidence, indications, outcomes & complications of peripartum hysterecomty performed in a tertiary care hospital & compare the results with other reports in the literature. Methods: Twenty nine peripartum hysterectomy cases carried out between July 2015 and June 2018 in Enam Medical College & Hospital, Savar, Dhaka were evaluated retrospectively. Maternal characteristics and characteristics of the present pregnancy and delivery, hysterectomy indications, operative complications, postoperative conditions, and maternal and neonatal outcomes were evaluated. Results
On the Location of Zeros of Polynomials  [PDF]
Gulshan Singh, Wali Mohammad Shah
American Journal of Computational Mathematics (AJCM) , 2011, DOI: 10.4236/ajcm.2011.11001
Abstract: In this paper, we prove some extensions and generalizations of the classical Eneström-Kakeya theorem.
On The Eneström-Kakeya Theorem  [PDF]
Gulshan Singh, Wali Mohammad Shah
Applied Mathematics (AM) , 2010, DOI: 10.4236/am.2010.16073
Abstract: In this paper, we prove some generalizations of results concerning the Eneström-Kakeya theorem. The results obtained considerably improve the bounds by relaxing the hypothesis in some cases.
Pandey Gulshan
International Research Journal of Pharmacy , 2012,
Abstract: Migraine is a chronic neurological disorder with heterogeneous characteristics resulting in a range of symptom profiles, burden, and disability. Migraine affects nearly 12% of the adult population in occidental countries, imposing considerable economic and social losses. The pharmacologic treatment of migraine includes preventive and acute strategies. A better understanding of the migraine pathophysiology along with the discovery of novel molecular targets has lead to a growing number of upcoming therapeutic proposals. This review focuses on new and emerging agents for the treatment of migraine.
Self-retaining iris retractor used in cryo-extraction of lens
Rai Gulshan
Indian Journal of Ophthalmology , 1978,
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