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Search Results: 1 - 10 of 1780 matches for " Yousef Kh. Majdalawi "
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The University of Jordan E-Learning Platform: State, Students’ Acceptance and Challenges  [PDF]
Tamara Almarabeh, Hiba Mohammad, Rana Yousef, Yousef Kh. Majdalawi
Journal of Software Engineering and Applications (JSEA) , 2014, DOI: 10.4236/jsea.2014.712087
Abstract: The rapid changes and increased complexity in today’s world present new challenges and put new demands on the education system. There has been generally a growing awareness of the necessity to change and improve the existing system towards online learning. Jordan is one of the distinguished countries in the Middle East with rapid progress in education and with advanced teaching and learning technologies. The University of Jordan is trying to exploit Information and Communication Technology (ICT) in education and moving forward by introducing the latest E-learning management systems (LMSs) to keep pace of technological revolution in the higher education. It is important to find out the impact of E-learning management system in the University of Jordan, examine the students’ acceptance for this new system and address the challenges facing the students while using the E-learning management system and these are what this paper is trying to do.
E-Government Strategy and Plans in Jordan  [PDF]
Yousef Kh. Majdalawi, Tamara Almarabeh, Hiba Mohammad, Wala Quteshate
Journal of Software Engineering and Applications (JSEA) , 2015, DOI: 10.4236/jsea.2015.84022
Abstract: Life is being developed every day in all of the life aspects. One of the major developing aspects is information technology (IT), and communication technology which makes life easier, faster, and more connected. ICT is evolving fast in Jordan and offering the government to deliver multiple delivery services with different characteristics among E-government services. The Jordanian government has invested heavily in E-government initiatives for the last 10 years to transform from traditional service delivery to more effective and efficient service to deliver high-quality customer-centric and performance-driven services to E-government stakeholders. However the global rank of E-government readiness as well as regional rank of Jordan is still in low rank according to the global countries but it is still quite according to the Arab countries. This research provides a trend analysis to find the trends (positive or negative) in the UN E-government indicators in Jordan and provides an overview to the E-government in Jordan where the researchers analyze the development of E-government in Jordan by introducing a general framework for the E-government through discussing the past, present status and the future plans for E-government in Jordan to get better service to their recipients and to improve overall progress of Jordan achievements compared with regional and global countries.
Cloud Computing of E-Government  [PDF]
Tamara Almarabeh, Yousef Kh. Majdalawi, Hiba Mohammad
Communications and Network (CN) , 2016, DOI: 10.4236/cn.2016.81001
Abstract: Over the past years, many businesses, government and individuals have been started to adopt the internet and web-based technologies in their works to take benefits of costs reduction and better utilization of existing resources. The cloud computing is a new way of computing which aims to provide better communication style and storage resources in a safe environment via the internet platform. The E-governments around the world are facing the continued budget challenges and increasing in the size of their computational data so that they need to find ways to deliver their services to citizens as economically as possible without compromising the achievement of desired outcomes. Considering E-government is one of the sectors that is trying to provide services via the internet so the cloud computing can be a suitable model for implementing E-government architecture to improve E-government efficiency and user satisfaction. In this paper, the adoption of cloud computing strategy in implementing E-government services has been studied by focusing on the relationship between E-government and cloud computing by listing the benefits of creation E-government based on cloud computing. Finally in this paper, the challenges faced the implementation of cloud computing for E-government are discussed in details. As a result from understanding the importance of cloud computing as new, green and cheap technology is contributed to fixing and minimizing the existing problems and challenges in E-government so that the developed and developing countries need to achieve E-government based on cloud computing.
Awareness and Usage of Computer and Internet among Medical Faculties’ Students at the University of Jordan  [PDF]
Tamara Almarabeh, Lama Rajab, Yousef Kh. Majdalawi
Journal of Software Engineering and Applications (JSEA) , 2016, DOI: 10.4236/jsea.2016.95012
Abstract: The rapid development of information communication technology blazed a trail in our learning, work, and lives. This study was conducted to ascertain the computer and internet literacy level of medical faculties’ students. 171 first-year medical students from 4 different medical colleges of the University of Jordan participated in the study. A semi-structured questionnaire was used to collect the data and the data analysis was done by using SPSS, Version 17. The results indicated that most medical students have average 5 or advance knowledge on the basic use of computer and internet. Google was found to be the most commonly used search engine. Also the study found that ICT (Information and Communication Technology) can be a useful tool in medical education but the lack of time, internet connectivity and resources is still a serious constraint.
Internet Usage, Challenges, and Attitudes among University Students: Case Study of the University of Jordan  [PDF]
Tamara Almarabeh, Yousef Kh. Majdalawi, Hiba Mohammad
Journal of Software Engineering and Applications (JSEA) , 2016, DOI: 10.4236/jsea.2016.912039
Abstract: The Internet usage has grown rapidly during the last decade in almost every country in the world and in Jordan specifically; today millions of individuals are connected to the Internet and the Internet has become the backbone of the information economy. It was used for social, commercial, political, and personal interactions. This study aims to investigate the attitudes of students at The University of Jordan towards using ICT (Information and Communication Technology). A semi-structured questionnaire was used to collect the data for obtaining students attitudes on the amount of Internet usage, reasons for using the Internet, and how the Internet impacted on students’ life. The data analysis was done by using SPSS, version 17. 536 students from different faculties (medical, humanities, and scientific) of the University of Jordan participated in the study. The results indicated that most students access Internet before they attended university; there is a positive attitude towards Internet; and they used it mainly for social websites, chatting and information gathering. The slow speed of the Internet connection and the lack of adopting ICT in courses syllabus are some constraints facing the students.
Modeling and Simulation Study of Space Data Link Protocol  [PDF]
Ismail Hababeh, Rizik M. H. Al-Sayyed, Ja’far Alqatawna, Yousef Majdalawi, Marwan Nabelsi
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2014, DOI: 10.4236/ijcns.2014.710045
Abstract: This research paper describes the design and implementation of the Consultative Committee for Space Data Systems (CCSDS) standards REF _Ref401069962 \r \h \* MERGEFORMAT [1] for Space Data Link Layer Protocol (SDLP). The primer focus is the telecommand (TC) part of the standard. The implementation of the standard was in the form of DLL functions using C++ programming language. The second objective of this paper was to use the DLL functions with OMNeT++ simulating environment to create a simulator in order to analyze the mean end-to-end Packet Delay, maximum achievable application layer throughput for a given fixed link capacity and normalized protocol overhead, defined as the total number of bytes transmitted on the link in a given period of time (e.g. per second) divided by the number of bytes of application data received at the application layer model data sink. In addition, the DLL was also integrated with Ground Support Equipment Operating System (GSEOS), a software system for space instruments and small spacecrafts especially suited for low budget missions. The SDLP is designed for rapid test system design and high flexibility for changing telemetry and command requirements. GSEOS can be seamlessly moved from EM/FM development (bench testing) to flight operations. It features the Python programming language as a configuration/scripting tool and can easily be extended to accommodate custom hardware interfaces. This paper also shows the results of the simulations and its analysis.
Quadrupole Excitation in Tunnel Splitting Oscillation in Nanoparticle
Yousef Yousefi,Khikmat Kh. Muminov
Advances in Condensed Matter Physics , 2012, DOI: 10.1155/2012/530765
Abstract: We analyze the interference between tunneling paths that occur for a spin system with special Hamiltonian both for dipole and quadrupole excitations. Using an instanton approach, we find that as the strength of the second-order transverse anisotropy is increased, the tunnel splitting for both excitations is modulated, with zeros occurring periodically and the number of quenching points for quadrupole excitation decreasing. This effect results from the interference of four tunneling paths connecting easy-axis spin orientations and occurs in the absence of any magnetic field. 1. Introduction Berry phase effects play an important role in spin dynamics. Tunneling of a spin (or magnetic particle) between degenerate orientations can be calculated by such Berry phase effects via the interference between tunneling paths, with quenching of the tunnel splitting occurring when tunneling paths destructively interfere [1, 2]. The first conclusive experimental evidence of tunneling in molecular magnet Mn12O12(CH3COO)16(H2O)4 called Mn12 was provided by Friedman [3]. He applies a magnetic field along the easyaxis of the crystal at a variety of temperatures and found a curve punctuated by sharp steps at regular intervals in the parameter . Also this observation that is confirmed by Hernandez et al. [4] and Thomas et al. [5] shows a series of steps in the hysteresis loops in Mn12 in low temperature. The steps observed in the hysteresis loops at nearly equal intervals of magnetic field are due to enhanced relaxation of the magnetization at the resonant fields when levels on opposite side of the anisotropy barrier coincide in energy (see Figure 1). Figure 1: The first curve was obtained from numerical calculation of the tunnel splitting for Mn 12 and the second curve is the magnetization plot of this magnetic molecule in low temperature. The common feature of molecular magnets responsible for their interesting behavior is the strong spin-spin coupling between metallic ions in the core of the molecule. In this magnet molecule, there are 4 Mn4+ atoms (spin 3/2) surrounded by 8 Mn3+ atoms (spin 2), and they retain a relative orientation such as to give the whole molecule a spin of 10 (= 8 ?4(3/2)) [3]. The Mn12 single-molecule magnet has a fourfold transverse magnetic anisotropy and displays resonant tunneling between two easy-axis orientations [3]. Here we consider the interference that occurs between tunneling paths in such a system and how that interference can be modified by the presence of a second-order transverse anisotropy perturbation and multipole excitations. Such
Semiclassical Modeling of Isotropic Non-Heisenberg Magnets for Spin and Linear Quadrupole Excitation Dynamics
Yousef Yousefi,Khikmat Kh. Muminov
Physics Research International , 2013, DOI: 10.1155/2013/634073
Semiclassical Modeling of Isotropic Non-Heisenberg Magnets for Spin and Linear Quadrupole Excitation Dynamics
Yousef Yousefi,Khikmat Kh. Muminov
Physics Research International , 2013, DOI: 10.1155/2013/634073
Abstract: Equations describing one-dimensional non-Heisenberg model are studied by use of generalized coherent states in real parameterization, and then dissipative spin wave equation for dipole and quadrupole branches is obtained if there is a small linear excitation from the ground state. Finally, it is shown that for such exchange-isotropy Hamiltonians, optical branch of spin wave is nondissipative. 1. Introduction Many condensed matter systems are fully described by use of effective continuum field models. Topologically nontrivial field configurations have an important role in modeling systems with reduced spatial dimensionality [1]. Magnetic systems are usually modeled with the help of the Heisenberg exchange interaction [2–4]. However, for spin , the general isotropic exchange goes beyond the purely Heisenberg interaction bilinear in spin operators and includes higher order terms of the type with up to [5]. Due to the spin states, the complex parameters are necessary to describe each of them, and this corresponds with the degrees of freedom. Two degrees of freedom are omitted, one because of normalization condition and the other for arbitrary phase decrease, hence 4S parameters are required to completely modeled the remainder degrees of freedom of spin states [6]. Particularly, in case with the isotropic nearest neighbor exchange on a lattice is derived by use of the Hamiltonian Here are the spin operators acting at a site , and are, respectively, the bilinear (Heisenberg) and biquadratic exchange integrals. The model (1) has been discussed recently in connection with bosonic gases in optical lattices [7] and in the context of the deconfined quantum criticality [8, 9]. Hamiltonian (1) is a special form presented in [10] and because of importance of quadrupole excitation in ferromagnetic Materials, it is considered here. This paper does not consider the antiferromagnetic and nematic states. Considering the effects of both dipole and quadrupole branches gives a nonlinear approximation. If higher order multipole effects are considered, the approximation is more accurate but at the same time, deriving the equations is too complicated. In this paper, only the effect of quadrupole branch for Hamiltonians described by (1) is considered. Study of isotropic and anisotropic spin Hamiltonian with non-Heisenberg terms is complicated due to quadrupole excitation dynamics [5, 11, 12]. Antiferromagnetic property of this excitation in states near the ground proves the existence of it, and Dzyaloshinskii calculated the effect of this excitation [13]. Also, numerical
Berry phase for coherent states in spin systems
Khikmat Kh. Muminov,Yousef Yousefi
Physics , 2011,
Abstract: In this paper we obtain Berry phase from Schr\"odinger equation. For vector states, basic kets are coherent states in real parameterization. We calculate Berry phase for spin S=1/2 and spin S=1 in SU(2) group and Berry phase for spin S=1 in SU(3) group.
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