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Institution

YMCA University of Science and Technology

EducationFaridabad, India
About: YMCA University of Science and Technology is a education organization based out in Faridabad, India. It is known for research contribution in the topics: Web crawler & Web page. The organization has 299 authors who have published 568 publications receiving 4547 citations.


Papers
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Proceedings ArticleDOI
15 May 2015
TL;DR: A survey of different architectures of web crawlers along with their comparisons has been carried out that takes into account various important features like scalability, manageability, page refresh policy, politeness policy etc.
Abstract: World Wide Web (www) is the gigantic and richest source of information. To retrieve the information from this imperative resource, Search Engines are generally used. For this purpose these Search engines rely on massive collections of web pages that have been downloaded by web crawlers. A Web crawler is a program that traverses the web by following the ever changing, dense and distributed hyperlinked structure and thereafter storing downloaded pages in a large repository which is later indexed for efficient execution of user queries. Thus, web crawlers are becoming increasingly important. Various web crawling architectures have been proposed in recent years. In this paper a survey of different architectures of web crawlers along with their comparisons has been carried out that takes into account various important features like scalability, manageability, page refresh policy, politeness policy etc.

24 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of residual stresses has been dissected for H-WEDMed machined surface alongside the surface roughness and erosion rate to enhance surface integrity and longer service life of High Carbon High Chromium D2 tool steel.
Abstract: This experimental examination exhibit a novel Hybrid Wire electrical discharge machining (H-WEDM) process of ultrasonic vibration combined with traditional Wire-EDM. The metal cutting for form tool and extrusion die with WEDM is liked to give better surface morphology. The effect of residual stresses has been dissected for H-WEDMed machined surface alongside the surface roughness and erosion rate to enhance surface integrity and longer service life of High Carbon High Chromium D2 tool steel. The process parameters chose for this investigation are type of vibration continuous/discontinues, amplitude of vibration, workpiece dimension, duty cycle, peek current and wire feed rate with objective to optimize the residual stresses and erosion rate. Portable X-ray Residual Stress Analyzer, a non-destructive X-ray analyzer is used to measure the residual stress efficiently by detecting the full Debye ring data from a single incident X-ray angle and Non goniometer stage influence on the measurements. An endeavor was made to compare the residual stresses for continuous/discontinues vibration and without vibration. The impacts of amplitude of vibration, peak current, duty cycle and wire feed rate variations on erosion rate was study using Taguchi method. From experimental study, it was observed that discontinuous vibration enhances the erosion rate and diminishes the resultant stresses. High Peak current and duty cycle altogether deteriorate the surface texture, which creates high tensile residual stresses because of debris and micro cracks. The optimum value of residual stresses 86.53 MPa and material erosion rate 6.45 mm/min was achieved using H-WEDM.

24 citations

Journal ArticleDOI
TL;DR: In this article, a hybrid model which employs interpretive structural modelling (ISM) and modified technique for order preference by similarity to ideal solution (TOPSIS) together, is proposed.
Abstract: The aim of this paper is to evaluate the flexibility in flexible manufacturing system (FMS). Two distinct modelling approaches have been employed. Flexibility and factors are identified through literature review, and a relationship is established in the opinion of experts from industries and academia. In this study, a hybrid model which employs interpretive structural modelling (ISM) and modified technique for order preference by similarity to ideal solution (TOPSIS) together, are proposed. ISM has been used to develop a hierarchical structure of flexibility. Modified TOPSIS has been used to evaluate the flexibility based on some factors. ISM model concluded that production flexibility has the more driving power than other flexibilities. Modified TOPSIS also evaluated that production flexibility is the most important flexibility in the FMS. The criteria weights are calculated by using the analytical hierarchy process (AHP).

23 citations

Journal ArticleDOI
TL;DR: Developed ontology depicts real world scenario of railway reservation system and can be extended to develop railway tracking web based application using Web Ontology Language (OWL) and Semantic Web Rule Language (SWRL).
Abstract: Background/Objectives: The research aims to explore differences among various ontology development tools, its languages; finally developed and visualized ontology on specific domain Methods/Analysis: Railway Enquiry System (RES) ontology is being developed with the help of Protege tool and visualized using TGViz tab It involves creation of various classes and their instances so that a person can find references to its query Findings: The following manuscript makes readers aware of concept of Semantic Web because the search performed by today's search engines is based on keyword extraction technique which leads to irrelevant and incomplete results marked with low precision and high recall Developed ontology depicts real world scenario of railway reservation system With this ontology, a person can check its seat availability, train fare details, PNR status and many more Improvements/Applications: The given ontology can be extended to develop railway tracking web based application using Web Ontology Language (OWL) and Semantic Web Rule Language (SWRL)

23 citations

Journal ArticleDOI
TL;DR: Simulation results demonstrate that the semi-active suspension system having hybrid fuzzy–PID controller with coupled rules provide best performance in controlling the passenger seat acceleration and displacement response compared to uncontrolled and other controlled cases.
Abstract: In this paper, semi-active quarter car system with three degrees of freedom is considered for modeling and evaluation of passenger ride comfort. Experimental results of magneto-rheological shock absorber are modeled using polynomial model. The considered algorithms in semi-active quarter car suspension system include PID controller, fuzzy logic controller, hybrid fuzzy–PID controller and hybrid fuzzy–PID controller with coupled rules. Simulation responses of the controlled semi-active and uncontrolled quarter car systems are compared under bump type of road excitation in time domain. Simulation results demonstrate that the semi-active suspension system having hybrid fuzzy–PID controller with coupled rules provide best performance in controlling the passenger seat acceleration and displacement response compared to uncontrolled and other controlled cases.

23 citations


Authors

Showing all 322 results

NameH-indexPapersCitations
Bharat Bhushan116127662506
Vikas Kumar8985939185
Dinesh Kumar69133324342
M K Arti21491179
Tilak Raj20681541
Parmod Kumar1948895
O.P. Mishra18461242
Neeraj Sharma18961063
Sandeep Grover18821251
Gurpreet Singh171071158
Vinod Chhokar1555526
Rahul Sindhwani1441498
Vineet Jain1434495
Arvind Kumar14118934
Rajesh Attri1341665
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202319
202220
20215
202021
201947
2018104