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.

Proposed Method for Shoot-Through in Three Phase ZSI and Comparison of Different Control Techniques

Abstract: This paper presented the new methodology for different control techniques applied to three phase Z-source inverter for minimisation of switching losses. The procedure for proposed control techniques and its effects on the performance of operation of three phase Z-source inverter are analyzed. The graphs for voltage gain and voltage stress are drawn for different control methods. The flow-chart for the symmetrical and unsymmetrical control techniques for creating pulse signals for switches of three phase inverter are shown . All the methods are studied and compared with each other. The Total harmonic distortion (THD) of output voltage of both the control methods has been analyzed using FFT analysis. The experiments done and the results shown for capacitor voltage, load current and load line voltage for simple boost and constant boost control techniques are presented using MATLAB/ Simulink. DOI: http://dx.doi.org/10.11591/ijpeds.v5i1.6180

Fuzzy clustering of web documents using equivalence relations and fuzzy hierarchical clustering

Abstract: The conventional clustering algorithms have difficulties in handling the challenges posed by the collection of natural data which is often vague and uncertain. Fuzzy clustering methods have the potential to manage such situations efficiently. Fuzzy clustering method is offered to construct clusters with uncertain boundaries and allows that one object belongs to one or more clusters with some membership degree. In this paper, an algorithm and experimental results are presented for fuzzy clustering of web documents using equivalence relations and fuzzy hierarchical clustering.

Performance Efficiency Assessment for Software Systems

Abstract: Software quality is a complex term. Various researchers have various different views for defining it. One common point in all is that quality is required and is indispensable. It should not only be able to meet the customer requirements but should exceed it. Customers not only mean the external customers but the internal ones too. Performance efficiency characteristic is one of the vital software quality characteristics. If we improve the performance efficiency, then it will definitely have a positive effect on the software quality. In this paper, we have identified various sub-characteristics that can affect the performance efficiency of the software and proposed a performance efficiency model. We assessed the performance efficiency of the software systems by using one of the multi-criteria decision making (MCDM) methods, namely analytical hierarchy process (AHP). Results suggest that the proposed model is consistent and may be used for comparing the software system.

Computer-aided engineering analysis for the performance augmentation of a fin-tube heat exchanger using vortex generator:

Abstract: The heat transfer performance of fin-tube heat exchangers can be enhanced with the help of longitudinal vortex generators. In this work, we investigate the effect of employing a rectangular winglet...