The Landau-Zener transition and the surface hopping method for the 2D Dirac equation for graphene

A Lagrangian surface hopping algorithm is implemented to study the two dimensional massless Dirac equation for Graphene with an electrostatic potential, in the semiclassical regime. In this problem, the crossing of the energy levels of the system at Dirac points requires a particular treatment in the algorithm in order to describe the quantum transition-- characterized by the Landau-Zener probability-- between different energy levels. We first derive the Landau-Zener probability for the underlying problem, then incorporate it into the surface hopping algorithm. We also show that different asymptotic models for this problem derived in [O. Morandi, F. Sch{\"u}rrer, J. Phys. A: Math. Theor. 44 (2011)] may give different transition probabilities. We conduct numerical experiments to compare the solutions to the Dirac equation, the surface hopping algorithm, and the asymptotic models of [O. Morandi, F. Sch{\"u}rrer, J. Phys. A: Math. Theor. 44 (2011)]

Designing and Developing a Web-Based Post Graduate Application System for UUM

The internet technologies are rapidly increasing. The aim of the study is to design and develop a Web-based Postgraduate Application System (WPAS) for Universiti Utara Malaysia. The WPAS is a real-time application system which is free from traditional document processing procedures. It provides a convenient graphics user interface (GUI) for both student and admission department staff. It allows students to make self-apply for their selected apply online, degree program, view application status, and update application information time-to-time. It also allows administrator to manage student account, offer of place and admission information. All of the services are possible anywhere at any time

Adiabatic evolution of 1D shape resonances: an artificial interface conditions approach

Artificial interface conditions parametrized by a complex number $\theta_{0}$ are introduced for 1D-Schr\"odinger operators. When this complex parameter equals the parameter $\theta\in i\R$ of the complex deformation which unveils the shape resonances, the Hamiltonian becomes dissipative. This makes possible an adiabatic theory for the time evolution of resonant states for arbitrarily large time scales. The effect of the artificial interface conditions on the important stationary quantities involved in quantum transport models is also checked to be as small as wanted, in the polynomial scale $(h^N)_{N\in \N}$ as $h\to 0$, according to $\theta_{0}$.Comment: 60 pages, 13 figure

An Investigation into the Nūn al-Wiqāyati in Classical Arabic

The article aims to explain the denomination of the nūn al-wiqāyati (“the nūn of protection”) and its real function in classical Arabic, focusing on linguistics and the theories of the Arab grammarians. Explanations of its function fall broadly into two camps. One sees its function as a wiqāyati (“protection”) element, while the other considers it as a personal suffix, i.e. 1st p. sg. –nī as an object. At the same time this paper argues for the two personal endings for the 1st p. sg -ī and –nī in order to reach an acceptable morphological analysis. After reviewing the opinions of the classical and modern Arab grammarians about the nūn al-wiqāyati as an Arabic term, its original function becomes clear

Impact of relationship marketing on customers loyalty of Islamic banks in the state of Kuwait

This study aimed to investigate the impact of relationship marketing on Customers Loyalty of Islamic banks in the state of Kuwait. Five dimensions of relationship Marketing was included in the study: Trust, Communication, Commitment, Competence, and Cooperation. On the other hand, customer loyalty was measured by two dimensions: Attitudinal Loyalty and Behavioral Loyalty. To achieve the aim of this study, a random simple sampling was applied as a sampling technique. Population of this study was the customers of four Islamic banks in the state of Kuwait, they were provided with 600 questionnaires, (560) responses were valid for test. The researchers used the descriptive and analytical methods. The results indicated that there is a significant statistical impact of relationship marketing dimensions (Trust, Communication, Commitment, Competence, and Cooperation) on Customers Loyalty of Islamic banks in the state of Kuwait. Based on the study results, the researchers recommend managers and decision makers of Islamic banks in Kuwait to be committed to their customers in terms of the needs and desires, and to provide timely services to customer to win their commitment in return

Colon-specific delivery of 5-fluorouracil from zinc pectinate spheroids through in situ intra-capsular ethylcellulose- pectin plug formation / Assad Ali Faraj Elyagoby

Conventional fluid-bed and immersion film coating of hydrophilic zinc pectinate spheroids using ethylcellulose-pectin mixture is met with fast drug release due to hydrophobic ethylcellulose coat detachment. This study explored in situ intra-capsular spheroid coating for colon-specific delivery of 5-fluorouracil. The solid coating powder was constituted of ethylcellulose and pectin in weight ratios of 11:0 to 2:9. Its weight ratio to spheroids was varied between 2:3 and 3:2. Delayed 5-fluorouracil release was obtained when the weight ratio of ethylcellulose and pectin in coating powder was kept at 8:3, and weight ratio of solid coating powder to spheroids was kept at 3:2 with particle size of ethylcellulose reduced to 22 μm

Image Compression Based On Region Of Interest For Computerized Tomography Images

The use of computers for handling image data in the healthcare is growing. The amount of data produced by modem image generating techniques, such as Computed Tomography (CT) and Magnetic Resonance (MR), is vast. The amount of data might be a problem from a storage point of view or when the data is sent over a network. To overcome these problems data compression techniques adapted to these applications are needed. Many classes of images contain some spatial regions which are more important than other regions. Compression methods which are capable of achieving higher reconstruction quality of important parts of the image have been implemented. For medical images, only a small portion of the image might be diagnostically useful, but the cost of wrong interpretation is high. Algorithms which deliver lossless compression within the regions of interest (ROI), and lossy compression elsewhere in the image, might be the key to providing efficient and accurate image coding to the medical community. In this thesis both of compression techniques (lossy and lossless) of medical images using the JPEG algorithm (DCT), will be discussed

THE IMPACT OF ARABIC LANGUAGE ON PRODUCING FRAGMENTS

The present study aims at examining the relationship between first language (Arabic) proficiency and second language (English) writing performance of 35 students from the University of Jordan. In addition, we are also interested in testing the impact of using L1 (Arabic) on producing sentence fragments. For that purpose, we have set two surveys to examine the most common type of fragments produced by our study population. The first survey was a multiple choice survey consisting of 8 sentences written in Arabic along with 3 different choices. The second survey was a sentencetranslating one consisting of 6 Arabic sentences and the participants were asked to translate them on their own. Our study population was third-year English language and literature students. The results revealed by our study show that missing-subject fragments were the most common type of fragments produced. The results obtained by our study support the results obtained by previous studies which state that the most common type of writing errors produced may include sentence fragments and other writing errors such as subject-verb agreement and articles. These writing errors are mainly produced due to the negative impact of L1 transfer as L1 speakers rely on their mother tongue when translating certain sentences into the target language L2.The study concludes with some recommendations for teachers to attract the students’ attention to such errors