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A review survey on SERVQUAL model in banking quality of services

Author(s):Reza Tehrani, Mojtaba Mirlohi, Shapoor Zarei
Journal: Technical Journal of Engineering and Applied Sciences
Publisher:Science Explorer Publications
Abstract
| Pages: 895-897
In the banking sector realize the importance of customer-centric philosophy and turned to quality management approaches to help manage their businesses. This work has started with the concept of quality of service and has proven its quality gaps model of service. SERVQUAL as an effective approach has been studied and its role in the analysis of the gap between customer expectations and perceptions is marked with the support of the banking example. The results of the study illustrate that although SERVQUAL could close one of the major gaps in the quality of service associated with the external client services could be extended to other important gaps closed and therefore could be developed to be applied to internal customers, ie employees and service providers.

A Steady Flow Analysis of Blood Flow Properties through Some Defective Bileaflet Mechanical Heart Valves

Author(s):Mohammad Gudarzi, Hashem Zamanian, Atta Oveisi
Journal: Technical Journal of Engineering and Applied Sciences
Publisher:Science Explorer Publications
Abstract
| Pages: 898-903
From about 280000 valve substitutes are now implanted worldwide each year, approximately half are mechanical valves. Mechanical heart valves designs include caged-ball, tilting-disc and bileaflet. Flow dynamics of blood around the valves are the most important part of design of valves. Today bileaflet valves are the most frequently implanted mechanical prosthesis. These valves are subject to malfunction in one or both of the valve leaflets. Although the occurrence of such malfunctions is low, they are life-threatening events that require emergency surgery. In this paper, we performed numerical simulations of the flow through a defective mechanical valve under several malfunction severity conditions. Our results show that the flow properties around and downstream of the defective valve is influenced by malfunction severity. Our results show that jet flow in velocity field, turbulent intensity and Reynolds stress has more impact on platelet activation than vorticity formation. Then we saw that the pressure decreasing and cavitation phenomena would not happen in these defective cases.

Investigation the vibration of chain saw by simulating cutting tree

Author(s):Masoud Fayzi, Ali Jafari, Hojat Ahmadi
Journal: Technical Journal of Engineering and Applied Sciences
Publisher:Science Explorer Publications
Abstract
| Pages: 904-908
One of machines that whose operator is exposed to large magnitude of hand-arm vibration is chain saw. Some studies are accordance whit this. These vibrations can cause vascular, neurological and musculoskeletal disorder, collectively named as hand-arm vibration syndrome. Main sources of vibration for this machine are single cylinder engine and the interaction of the chain with the wood being worked on. Current study was done to investigate the effect of engine speed and Species of wood on the vibration of front handle of 070-stihl chain saw during the cutting simulating tree. The result showed that the effect of different operation, different axes and different speeds on the value of RMS acceleration was significant at 1% level. The peak of frequency spectrum was in the frequency in accordance with the hook of piston. By change in species of wood occasionally the peak frequency was shifted to other centre frequency between the range frequencies of 63Hz to 100 Hz.

Structural Equation Modeling of the Relationship between Knowledge Management and Business Intelligence in Knowledge-Based Companies

Author(s):AbbasAli Daryaei, Vahid Oskou, Mehdi Soltani
Journal: Technical Journal of Engineering and Applied Sciences
Publisher:Science Explorer Publications
Abstract
| Pages: 909-918
Today global competition for achieving the countries‟ and organizations‟ suitable position in modern technologies is increased. The information age has been started and creating added value through knowledge is proposed. Creating competitive advantage in knowledge-based economy requires management and using the organization‟s implicit knowledge and converting it to the business intelligence. In this regard, monitoring the role of organization knowledge management in promoting the organization‟s business intelligence is very important. Although theoretical foundation of previous researches and studies confirm this relation conceptually, the empirical evidences are so few and scattered. For this regard, the present study with the purpose of investigating the relation between knowledge management and business intelligence provides a conceptual-empirical model to determine a relation between these two. Finally, the proposed model has been evaluated and adjusted by using structural equation modelling and according to the collected data from knowledge-based companies in Yazd science and Technical Park.

Importance of k5 and k3,3 in graph theory

Author(s):B.Nikfarjam, M.T.Yahyapour
Journal: Technical Journal of Engineering and Applied Sciences
Publisher:Science Explorer Publications
Abstract
| Pages: 919-922
In this article we show that complete graph k5 and complete bipartite graph k3, 3 is very important in graph theory. Then we explain the rule of programming formulation of the thickness problem. The thickness of a graph G= (V, E) is the minimum number of planar sub graph into which the graph can be decomposed. Therefore, the thickness is one measure of the degree of non planarity of a graph. The thickness problem is NP-hard. The thickness problem has application in VLSI design. In this article we show that complete graph and complete bipartite graph is very important in graph theory. In particular complete graphs k5 and bipartite graphs k3,3 is very important in thickness and matroid problem.

On The Zero Divisor Graph of Z p n

Author(s):E.Vatandoost, Z. Ashournezhad
Journal: Technical Journal of Engineering and Applied Sciences
Publisher:Science Explorer Publications
Abstract
| Pages: 923-925
Let R be a commutative ring. We used Z(R)* to denote the set of nonzero zero divisors of R. We associate a graph Г(R) to R with vertices Z(R)* and for distinct a , b ∋ Z(R) the vertices a , b are adjacent if and only ab = 0. In this paper we obtain diameter, clique number, minimum and maximum degree of graph Г (Z p n ).

CASCADED MULTILEVEL INVERTER BASED DSTATCOM FOR POWER LINE CONDITIONERS USING INSTANTANEOUS REAL-POWER THEORY

Author(s):NAARISETTI SRINIVASA RAO
Journal: International Journal of Electrical and Electronics Engineering Research
Publisher:TJPRC Pvt Ltd.
Abstract
| Pages: 1-14
Even there are different types of concepts have been proposed for conversion of square wave to sinusoidal wave form, multi level inverter plays a dominant role due to its low switching losses, simplified circuit topology and maximum reduction in the harmonic content from the square wave by increasing the number of levels between peak-peak.Among the multilevel Converters, the cascaded H-bridge topology (CHB) is particularly attractive in high-voltage applications, because it requires the least number of components to synthesize the same number of voltage levels. This paper presents an investigation of five-Level Cascaded H – bridge (CHB) Inverter as Distribution Static Compensator (DSTATCOM) in Power System (PS) for compensation of reactive power and harmonics. The results are obtained through MATLAB/Simulink software package. The proposed DSTATCOM is simulated for both linear and nonlinear loads.

IMPROVEMENT OF POWER QUALITY BY USING SHUNT ACTIVE POWER FILTER AT VARIOUS LOAD CONDITIONS

Author(s):K. BAPAYA NAAIIDU, R. KAMESWARA RAO
Journal: International Journal of Electrical and Electronics Engineering Research
Publisher:TJPRC Pvt Ltd.
Abstract
| Pages: 15-24
Power quality problems such as three-phase unbalanced and harmonics, reactive power, power factor and so on, have become serious increasingly, passive power filter may not provide better solution and the development of APF has been one of the ways to solve these problems. This paper presents a three-phase, 3-level voltage source inverter based active filter for power line conditioning to improve power quality in the distribution network. The active filter compensates both reactive power and harmonic currents drawn by non-linear loads; additionally it facilitates power factor corrections. The compensation process is based on concept of p-q theory. This proposed 3-level active power filter system is validated through MATLAB/SIMULINK Platform with different load conditions.

IMAGE SEGMENTATION USING GABOR FILTER AND WAVELET TRANSFORM

Author(s):MAYUR INGALE, K. S. BHAGAT, P. M. MAHAJAN
Journal: International Journal of Electrical and Electronics Engineering Research
Publisher:TJPRC Pvt Ltd.
Abstract
| Pages: 25-28
This paper describes the various methods for the segmentation purpose like as using Gabor transforms and wavelet transform .The texture segmentation is the important tasks in the machine vision and the computer application. .Among the existing texture segmentation methods, those relying on Markov random fields have retained substantial interest and have proved to be very efficient in supervised mode. This paper introduces a formulation which allows using wavelet-based image segmentation. This formulation can be used in supervised, unsupervised, or semi supervised modes. The main obstacle to using wavelet-based priors for segmentation, that they’re aimed at representing real values, rather than discrete labels, as needed for segmentation. We are trying to compare between Gabor filter and wavelet transform using various algorithms. The goals are to improve textured image segmentation results, especially along the borders of regions; and to take into account the spatial relationship among pixels to improve the segmentation of region interiors.
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