YMCA University of Science and Technology

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 page & Web crawler. The organization has 299 authors who have published 568 publications receiving 4547 citations.

A survey and taxonomy of various packet classification algorithms

Abstract: Routers can also function as firewalls and perform various operations on the incoming and outgoing packets In case when all the packets share common header characteristics, it is termed as a packet flow In order to classify a packet, routers perform a lookup on a classifier table using one or more fields from the packet header to classify the packet into its corresponding flow A classifier is a set of rules which identify each flow and the appropriate actions to be taken for any packet belonging to that flow The paper examines the problem of packet classification and various proposed techniques for the same

Analysis of critical success factors for implementation of humanised flexible manufacturing system in industries

Abstract: The paper focuses to identify various critical success factors that could influence the implementation of newly proposed manufacturing system i.e., humanised flexible manufacturing system (HFMS), and develop a framework to manage them. Interpretive structural modelling (ISM) is used to depict the relationship and priority among the various critical success factors (CSFs). This research provides a framework for managers and indicates the dominant CSFs on the basis of higher driving power to enable the successful implementation of HFMS. The dependent, independent, autonomous and linkage CSFs have been found using MIMAC analysis. The drive power and dependence power for CSFs has been evaluated. The proposed hierarchal model would help the manufacturing industries to effectively implement newly proposed manufacturing system, i.e., HFMS and develop suitable strategies according to the CSFs driving power and dependence power. This would encourage more number of firms to transit from traditional manufacturing sy...

HiCrawl: A Hidden Web Crawler for Medical Domain

Abstract: The Hidden Web refers to a huge portion of the WWW that holds numerous freely accessible Web databases, hidden behind search form interfaces which can only be accessed through dynamic web pages that are generated in response to the user queries issued at the search form interface. Thus, the core challenge to implement any crawler for the Hidden Web is to routinely surpass these search form interfaces by automatically generating & issuing queries that help discover these dynamic Web pages. The paper provides a novel approach to guide the crawler in choosing the right query term to be submitted to any search form interface that has been designed to accept keywords or terms as input to it. The system is based on the use of classification hierarchies that might have either been manually or automatically constructed. And for the purposes of illustration, we have considered the search form interfaces in the 'Medical' domain, it being one of the most popular domains used by the researchers and the use of a manually generated top-down classification hierarchy in the same domain.

Transient modeling of Z-source chopper used for adjustable speed control of DC motor drive

Abstract: The newly proposed Z-source chopper using LC impedance network with switching converter circuit coupled between power source and load can be used in modern energy conversion system because of both voltage buck and boost capabilities. This paper presents transient modeling of Z-source chopper and complete speed feed back control of separately excited dc motor. In the process of designing the control scheme for controlling the speed of separately excited dc motor, knowledge of transfer function representing the unique dc impedance network is essential. The presence of right-half-plane zero in developed average control-to-output model reveal that the output decreases initially before rising toward its new steady-state value, when a step increase in control input is applied. The nonminimum-phase transient response can be reduced by proper feedback control technique. The speed is controlled using direct measurement of speed and inductor current. Compensator for both speed loop and current loop are designed using classical control technique through small-signal analysis. Hysteresis band modulator is used for finding out the switching function of switches. Performance of control method of the compensated Z-source chopper is verified by simulation.