21 research outputs found

    The Mediating Effect of Job Satisfaction on Employee Loyalty: A Case Study of a Developer Company in Malaysia

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    Employees’ loyalty is being described as the ability of the employee or staff members of the organization to stay and contribute well in their jobs for such a long term. In the recent years, resignation of employees did show an increment in many companies in Malaysia. This research specifically study on a developer company which is one of the constructions developers company in Johor, Malaysia The purpose of this study is to investigate the factors of training, rewards and benefits and working condition as determinants toward employee loyalty and how job satisfaction mediate the relationship between independent variables and dependent variables as the factors that influence the employee loyalty in organizations. A stratified sampling method was adopted as the sampling method and questionnaires is chosen as the research instrument adopted previous researcher and adopt it into this research. Respondents of this research consists of 155 respondents who are employees of the developer company. In general, we conclude that employee loyalty in the developer company has positive relation between the working condition, rewards and benefits, training and job satisfaction and confirms the partial mediation of Job Satisfaction between the independent variables, rewards/benefits and training with employee loyalty.     Keywords: Employee Satisfaction, Employee Loyalty, Working Condition, Training, Malaysi

    Performance Enhancements in IEEE 802.11 DCF MANET through Variation of SIFS Values in Distance Vector Routing Environment

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    This paper describes and investigates the performance enhancement techniques used in IEEE 802.11g MANET in AODV and DSDV routing environment. Through variation of Short Interframe Space (SIFS) values, a better scheme to enhance the wireless network performance can be achieved. This is important especially to assign high priority network nodes that carry time sensitive data to reach the intended receiver in a timely manner. Using NS-2, network simulations are done and the findings are presented. It is showed that nodes using the variated SIFS values can achieve higher throughput compared to nodes using the default SIFS values

    Variable Gain Super Twisting Sliding Mode Control (VGSTW) application in longitudinal plane of Autonomous Underwater Glider (AUG)

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    904-913This paper presents a robust control design using variable gain super twisting sliding mode control application in Autonomous Underwater Glider (AUG). AUGs are known as underactuated systems and very nonlinear in nature make difficult to control. The controller is designed for longitudinal plane of an AUG that tracks the pitching angle and net buoyancy of a ballast pump for nominal system, system in existence of external disturbance and parameter variations in hydrodynamic coefficients. The Lyapunov stability theorem has proved that the proposed control law is satisfied the stability sufficient condition. The simulation results have shown that the proposed controller has improved the transient response, reduced steady error and chattering effects in control input and sliding surface in all cases

    Variable Gain Super Twisting Sliding Mode Control (VGSTW) application in longitudinal plane of Autonomous Underwater Glider (AUG)

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    This paper presents a robust control design using variable gain super twisting sliding mode control application in Autonomous Underwater Glider (AUG). AUGs are known as underactuated systems and very nonlinear in nature make difficult to control. The controller is designed for longitudinal plane of an AUG that tracks the pitching angle and net buoyancy of a ballast pump for nominal system, system in existence of external disturbance and parameter variations in hydrodynamic coefficients. The Lyapunov stability theorem has proved that the proposed control law is satisfied the stability sufficient condition. The simulation results have shown that the proposed controller has improved the transient response, reduced steady error and chattering effects in control input and sliding surface in all cases

    Electrical and magnetic properties of Ga substituted La2/3 Ca 1/3 MnO3 perovskite

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    Electrical and magnetic properties of gallium substitution for calcium in ABO3 typed colossal magnetoresistance (CMR) La2/3Ca1/3MnO3 (LCMO) perovskite were studied using DC four point probe and AC susceptometer. La2/3 (Ca1-xGax)1/3MnO3 (LCGMO) samples of concentration of x = 0.6, 0.7 and 0.8 were prepared using the solid state reaction method. Gallium substituted samples show the effect of decreasing Mn4+ concentration and of lattice distortion by incorporation of smaller gallium ionic radius. Electrical transport studies indicate samples with Ga concentration x=0.6 and 0.7 exhibit metal to insulator transition (MIT) at low temperature (50K) and sample x=0.8 only shows insulating behavior with increasing Ga concentration. AC susceptibility studies indicate all samples exhibit ferromagnetic to paramagnetic transition with an antiferromagneric ordering at low temperature showing the effect of decreasing Mn4+ concentration affecting double exchange mechanism and thus magnetic ordering of the samples

    Clinical-epidemiological pattern of primary immunodeficiencies in Malaysia 1987-2006: a 20 year experience in four Malaysian hospitals

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    Aim of study: To determine the clinical and epidemiological characteristics of patients seen with primary immunodeficiencies referred at four Malaysian Hospitals between 1987 to 2007 Methods: Patient data were retrospectively obtained from patient records and supplemented by information from a standardized questionnaires taken at the time of diagnosis from 4 participating hospitals. The completed data were transferred to document records kept by the first author. The diagnoses made were based on criteria set by WHO Scientific Committee 1986. Results: Fifty one (51) patients with completed records satisfied the criteria of primary immunodeficiencies based on WHO Scientific Committee 1986. Predominant Antibody deficiency (40.4%) is the commonest of the class of primary immunodeficiency (based on modified IUIS classification) followed by phagocytic defect (17.3%), combined immunodeficiencies (15.4%) and other cellular immunodeficiencies (11.5%). The commonest clinical presentation is pneumonia (54%). A positive Family history with a close family relative afflicted was a strong pointer to diagnosis for PID (52.6%) Primary immnodeficiencies are seen in all the major ethnic groups of Malaysia, predominantly among Malays. As observed in other patient registries, diagnostic delay remains the major cause of morbidity and mortality. Conclusion: Primary immunodeficiencies is relative rare but is an emerging disease in Malaysia. Creating awareness of the disease, may reveal more cases within the community. It is sufficient to be a health issue in Malaysia as in other developing countries in the future

    The Evaluation Of Controller Tracking Performance Based On Taylor’s Series Expansion Model

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    This paper presents the controller tracking performance of Underwater Glider. The controllers are designed based on linearised model. The equations of motion are restricted to longitudinal plane. The controllers are designed and tested for the glide path moving from 45° to 30° downward and upward. The model is linearised using Taylor’s series expansion linearisation method. The controller developed here is Sliding Mode Control (SMC), and Linear Quadratic Regulator (LQR). The performance of both controllers are compared and analysed. The simulations show SMC produce better performance with about over 30% faster than LQR based its convergence time

    Effect of artificially produced pit-like defects on the strength of AISI 410 stainless steel compressor blades

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    In the present paper, the effects of artificially produced pit-like defects00 the strength of members made of A1SI 410 Martensitic stainless steel were investigated. Compressor blades in power generation industries made of A1SI 410 stainless steel commonly suffer from pitting corrosion. Well-defined pit-like defects were artificially produced on various specimen and strength tests were conducted. A1SI 410 stainless steel microstructure shows a typical body-centered te1ragooal (bet) structure. Strength tests analysis established yield strength of 547 MPa for case I (max depth-max diameter) whereas a yield strength of 585 MPa for case 2(min depth-min diameter), In addition, strength and elongation of the artificially produced pitted tensile specimen gradually decrease with the increase of the area lost doe to artificially produced pits

    Retransmission-Based Additional TXOP Allocation for Audio-Video Transmission by IEEE 802.11e HCCA

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    This paper proposed a method of allocating additional TXOP duration to replenish the bandwidth used during the retransmission of frames at link layer in audio-video transmission by IEEE 802.11e HCCA. In the proposed scheme, the HC monitors the number of retransmission at link layer and utilize the surplus bandwidth to allocate additional TXOP duration on the basis of number of retransmission performed during the last transmission. The proposed scheme also reduces the polling overhead to gain surplus bandwidth by polling only a station in a polling interval. By simulation, we compare the application-level QoS of the TGe scheme and the proposed scheme. Numerical results show that the proposed scheme can keep the QoS of audio and video high under lossy wireless channel especially when the number of multimedia stations is small. Furthermore, the proposed scheme can admit more traffic flows than the TGe scheme
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