450 research outputs found

    The Impact of Service Quality Provided by Admission and Registration Deanships at Jordanian Private Universities on Student Satisfaction

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    The study aimed at measuring the impact of service quality provided by admission and registration deanships at Jordanian private universities on students' satisfaction. To collect information for the study, a questionnaire was developed and distributed on a random sample (n=258) of students who regularly visit the admission and registration deanship and finalize their registration traditionally. After conducting the relevant statistical analysis and testing hypotheses, the study reached the following conclusions: Students are moderately satisfied with all dimensions of the service quality provided by admission and registration deanships at Jordanian private universities; namely tangibles, reliability, responsiveness, empathy and courtesy. It was also found that there is a statistically significant impact for the above-mentioned dimensions of service quality on students' satisfaction with the services provided by the deanship. The study presented a number of recommendations including: holding relevant training courses about the art of dealing with the public, encouraging cooperative work and promoting the concept of synergy, educating students about the role of the admission and registration deanship at the university. Keywords: service quality; customer satisfaction; admission and registration deanship; Jordanian private universities

    The Impact of the Internal Work Environment on the Degree of Job Burnout: An Empirical Study - Civil Status and Passports Department

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    This study aim to explore the impact of the internal work environment (participation in decision-making, social relations, work pressure, incentives) on the degree of job burnout dimensions (emotional exhaustion, depersonalization, and personal accomplishment). The study targeted administrative staff in all senior and middle and lower levels of Civil Status and Passports Department- Amman. The study relied on the analytical, descriptive approach, using both of its parts: theoretical and field. For the purposes of this study, (200) questionnaires consisted of (49) items were distributed, (183) of which were valid for analysis so were analyzed, the study showed a number of results including: - The respondents' perceptions about the importance of the internal working environment were on an average level, as well as their perceptions about the degree of job combustion which were on an average level also - The study showed that there is a significant effect of the four dimensions of  internal work environment on the degree of Job Burnout in the Civil Status and Passports Department, where the dimension of (work pressure) is the most influential. The study recommended the need to pay attention to workers and the creation of a strong social relationships environment, filled with both types of incentives. It recommended also the need to create suitable atmosphere to reduce work pressure so as to prevent the occurrence of Job Burnout. Keywords: internal work environment, job burnout, Civil Status and Passport Department

    Nyquist-SEFDM: Pulse shaped multicarrier communication with sub-carrier spacing below the symbol rate

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    A new waveform design which simultaneously compresses bandwidth and suppresses out-of-band power leakage is studied in this work considering future 5th generation (5G) requirements. Thus, doubly created interference, coming from less than symbol rate packed sub-carriers and pulse shaping filters, is introduced. Therefore, this work, through using specially designed detectors, deals with the doubly created interference problem. It paves the way to non-orthogonal signal detection and non-orthogonal carrier aggregation (CA) system designs; both of importance to future wireless and wired communication systems

    Privatization effects on Zakat and dividend: Empirical evidence from Malaysia and Jordan

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    There is a growing consensus in the literature that privatization program has positive impact to the country’s productivity and competitiveness. At micro level, empirical analyses both in Malaysian and Jordan have shown the significant contribution of privatization program on firms’ profitability, productivity and better leverage. Generally, privatization leads to better profitability which theoreti-cally should provide higher return to shareholders in terms of dividend as well as higher contribution to stakeholders in terms of zakat to the asnaf (zakat recipients including the poor and needy). Howev-er, studies on privatization impact towards zakat and dividend payment are almost absent. Therefore, this study aims at investigating the effect of privatization on zakat and dividend disbursement. This paper focuses on two developing nations namely Malaysia and Jordan. The sample size of this analy-sis includes 17 Malaysia Government Link Corporations (Top GLC20 companies) and 23 Jordan State Owned Enterprises (SOEs). The duration of the study is eleven (11) years from 2003 to 2013. The data were collected from Bloomberg, Amman Stock Exchange and Bursa Malaysia. Using statis-tical models and Wilcoxon signed rank test, the results show that privatization has contributed to higher payment in terms of dividend to shareholders in both countries. In addition, zakat paid by Ma-laysian GLCs is steadily increasing and significant. The findings also indicate that global financial crisis 2007-2008 has no impact on corporate zakat payable in Malaysia, while dividend growth is slow during this period. The paper then provides discussion on few pertinent issues and finally sug-gests the need for new tax and zakat Law in Jordan as well as improvement in current zakat account-ing practices in Malaysia. Research paper Reference to this paper should be made as follows: Bakar, R, Darwazeh, R. N., Sakinah, W. (2016). “Privatization effects on Zakat and dividend: Empirical evidence from Malaysia and Jordan”, Journal of Entrepreneurship, Business and Economics, Vol. 4, No. 1, pp. 1–2

    Spectrally Efficient FDM over Satellite Systems with Advanced Interference Cancellation

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    For high data rates satellite systems, where multiple carriers are frequency division multiplexed with a slight overlap, the overall spectral efficiency is limited. This work applies highly overlapped carriers for satellite broadcast and broadband scenarios to achieve higher spectral efficiency. Spectrally efficient frequency division multiplexing (SEFDM) compresses subcarrier spacing to increase the spectral efficiency at the expense of orthogonality violation. SEFDM systems performance degrades compared to orthogonal signals, unless efficient interference cancellation is used. Turbo equalisation with interference cancellation is implemented to improve receiver performance for variable coding, compression and modulation/constellation proposals that may be applied in satellite communications settings. Such parameters may be set to satisfy pre-defined spectral efficiency values for a given quality index (QI) or associated application. Assuming LDPC coded data, the work proposes two approaches to receiver design; a simple matched filter approach and an approach utilising an iterative interference cancellation structure specially designed for SEFDM. Mathematical models and simulations studies are presented indicating promising gains to be achieved for SEFDM transmission with advanced transceiver architectures at the cost of increased complexity at the receiver

    Demonstration of Negative Impedance Conversion for Bandwidth Extension in VLC

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    This work proposes and demonstrates the utility of a negative impedance converter (NIC) circuit, based on a common collector (CC) amplifier, for the generation of negative capacitance. The design principle of the proposed NIC is introduced, then a negative capacitance equals -200 pF is demonstrated using discrete devices constructed on a printed circuit board (PCB). The designed NIC is applied for the bandwidth extension of LEDs to enhance the achievable data rates in visible light communication (VLC) systems. The paper includes analytical derivations of the obtained negative capacitance as a function of circuit parameters and verifies this by both simulation and experimentally. Measurements show significant bandwidth extension by neutralising the bandwidth-limiting effect of the LED diffusion capacitance through the introduction of a parallel negative capacitance

    Energy and Spectrally Efficient Signalling for Next Generation IoT

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    This work proposes an energy and spectrally efficient signalling technique for the next generation internet of things (IoT). The signalling method employs the bandwidth compressed fast-orthogonal frequency division multiplexing (FOFDM) scheme with the single dimensional pulse amplitude modulation (PAM) as well as the frequency orthogonal filtering technique using Hilbert transform (HT) pair. The proposed HT-FOFDM system is designed and modelled based on the narrowband IoT (NB-IoT) specifications. To investigate the designed signalling method of different spectral efficiencies, we conducted simulations for HT-FOFDM with comparisons to single-carrier frequency division multiple access (SC-FDMA). We show that the proposed PAM modulated HT-FOFDM signalling increases the data rate effectively while maintaining reliable transmission within the same bandwidth of 180kHz. Comparative results of the bit error rate (BER) performance in additive white Gaussian noise (AWGN) channel and constellation diagrams of received noisy signals are presented. Furthermore, we show that HT-FOFDM with PAM modulation schemes comprehensively outperforms SC-FDMA that achieves the same spectral efficiencies with significant power advantages

    Non-Orthogonal Narrowband Internet of Things: A Design for Saving Bandwidth and Doubling the Number of Connected Devices

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    IEEE Narrowband IoT (NB-IoT) is a low power wide area network (LPWAN) technique introduced in 3GPP release 13. The narrowband transmission scheme enables high capacity, wide coverage and low power consumption communications. With the increasing demand for services over the air, wireless spectrum is becoming scarce and new techniques are required to boost the number of connected devices within a limited spectral resource to meet the service requirements. This work provides a compressed signal waveform solution, termed fast-orthogonal frequency division multiplexing (Fast-OFDM), to double potentially the number of connected devices by compressing occupied bandwidth of each device without compromising data rate and bit error rate (BER) performance. Simulation is firstly evaluated for the Fast-OFDM with comparisons to single-carrier-frequency division multiple access (SC-FDMA). Results indicate the same performance for both systems in additive white Gaussian noise (AWGN) channel. Experimental measurements are also presented to show the bandwidth saving benefits of Fast-OFDM. It is shown that in a line-of-sight (LOS) scenario, Fast-OFDM has similar performance as SC-FDMA but with 50% bandwidth saving. This research paves the way for extended coverage, enhanced capacity and improved data rate of NB-IoT in 5th generation (5G) new radio (NR) networks

    FPGA design of low complexity SEFDM detection techniques

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    This paper presents for the first time the hardware design of low complexity detection algorithms for the recovery of Spectrally Efficient Frequency Division Multiplexing (SEFDM) signals. The work shows that a practical design is feasible using Field Programmable Gate Arrays (FPGAs). Two detection techniques can be implemented using the proposed system architecture, namely Zero Forcing (ZF) and Truncated Singular Value Decomposition (TSVD), demonstrating that our hardware design is flexible. TSVD offers a significant reduction in complexity compared to optimal detection techniques, such as Maximum Likelihood (ML) while outperforming ZF, in terms of Bit Error Rate (BER). Results show excellent fixed-point performance and are comparable to existing floating-point computer-based simulations
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