Tunneling in Polymer Quantization and the Quantum Zeno Effect

As an application of the polymer quantization scheme, in this work we investigate the one dimensional quantum mechanical tunneling phenomenon from the perspective of polymer representation of a non-relativistic point particle and derive the transmission and reflection coefficients. Since any tunneling phenomenon inevitably evokes a tunneling time we attempt an analytical calculation of tunneling times by defining an operator well suited in discrete spatial geometry. The results that we come up with hint at appearance of the Quantum Zeno Effect in polymer framework.Comment: 21pp,3 figures, to be published in Phys. Lett.

Gender Differences in Computer Ethics among Business Administration Students

Because of the various benefits and advantages that computers and the Internet offer, these technologies have become an essential part of our daily life. The dependence on these technologies has been continuously and rapidly increasing. Computers and the Internet use also has become an important part for instructional purposes in academic environments. Even though the pervasive use of computers and the Internet has many benefits for almost everyone, but it has also increased the use of these technologies for illegal purposes or unethical activities such as spamming, making illegal copies of software, violations of privacy, hacking and computer viruses. The main purpose of this study is to explore gender differences in computer ethics among Business Administration students and examine their attitudes towards ethical use of computers. Results from 248 students in the Department of Business Administration at a public university in Turkey reveal that significant differences exist between male and female students’ attitudes towards ethical use of computers.computer ethics, gender differences, business administration

Relativistic MOND from Modified Energetics

We begin to investigate the question of what modifications in energy-momentum tensor can yield correct MOND regime. As a starting study, we refrain from insisting on an action principle and focus exclusively on the equations of motion. The present work, despite the absence of an explicit action functional, can be regarded to extend Milgrom's modified inertia approach to relativistic domain. Our results show that a proper MOND limit arises if energy-momentum tensor is modified to involve determinant of the metric tensor in reference to the flat metric, where the latter is dynamically generated as in gravitational Higgs mechanism. This modified energy-momentum tensor is conserved in both Newtonian and MONDian regimes.Comment: 7p

A Foreword from the Editor-in-Chief

I am very happy to announce that the Non-Metallic Material Science (NMMS) which is an open access and multidisciplinary academic journal and a technical platform bringing out original research work and covering all aspects of non-metallic materials, has started its publication journey by the Bilingual Publishing Co., in 2019. The scope of the journal is devoted to publish original experimental and theoretical research papers, reviews, short communications, and technical notes mainly in the areas of polymeric materials, composites and hybrid materials, inorganic and carbon-based materials.

Higgsed Stueckelberg Vector and Higgs Quadratic Divergence

Here we show that, a hidden vector field whose gauge invariance is ensured by a Stueckelberg scalar and whose mass is spontaneously generated by the Standard Model Higgs field contributes to quadratic divergences in the Higgs boson mass squared, and even leads to its cancellation at one-loop when Higgs coupling to gauge field is fine-tuned. In contrast to mechanisms based on hidden scalars where a complete cancellation cannot be achieved, stabilization here is complete in that the hidden vector and the accompanying Stueckelberg scalar are both free from quadratic divergences at one-loop. This stability, deriving from hidden exact gauge invariance, can have important implications for modelling dark phenomena like dark matter, dark energy, dark photon and neutrino masses. The hidden fields can be produced at the LHC.Comment: 5pp, 1 fig. Improved exposition, rectified concurrency to broken and unbroken electroweak vacua, added reference

Why Interpersonal Ties are Important for People: An Analysis of the Concept of Social Capital and Its Dimensions of Holism, Convertibility, and Conductibility

During recent years, social capital has become one of the most widely used concepts in sociological literature, and its popularity has shown itself in both sociological theory and everyday language. Its increasing popularity has mainly resulted from its conceptualizations by some of the most prominent social scientists, such as Pierre Bourdieu, James Coleman, Nan Lin, and Robert Putnam and from its empirical applications to social problems and society afterwards. While many scholars have seen social capital as something of a cure for social problems and perceived social capital theories adequate as they are for their empirical applications, few scholars have approached social capital with a critical perspective and critically addressed the highly accepted social capital theories. I argue that the lack of critical perspective to the current social capital theories is a research gap. Therefore, to satisfy this research gap and to question the validity of these highly accepted social capital theories, this dissertation addresses the concept of social capital with an emphasis on its three dimensions: holism, convertibility, and conductibility. In three separate studies, this dissertation examines each dimension of the concept respectively with a critical approach, discusses what their main components are, presents who their most prominent thinkers are and what they have claimed, reveals their shortcomings, and finally offers plausible solutions to remove the shortcomings. Thus, this dissertation aims to provide an update to some of the highly accepted social capital theories and a unique contribution to the social capital literature

Protective effect of sildenafil citrate on contralateral testis injury after unilateral testicular torsion/detorsion

OBJECTIVES: This study was designed to investigate prevention of contralateral testicular injury with sildenafil citrate after unilateral testicular torsion/detorsion. METHODS: Thirty-seven adult male rats were divided into four groups: sham operated (group 1, n = 7), torsion/detorsion + saline (group 2, n = 10), torsion/detorsion + 0.7 mg of sildenafil citrate (group 3, n = 10) and torsion/detorsion + 1.4 mg of sildenafil citrate (group 4, n = 10). Unilateral testicular torsion was created by rotating the right testis 720º in a clockwise direction for 2 h in other groups, except for group 1, which was served as sham group. After torsion (2 h) and detorsion (2 h) periods, rats were killed. RESULTS: The level of reduced glutathion (GSH) (

Pattern Nulling of Linear Antenna Arrays Using Backtracking Search Optimization Algorithm

An evolutionary method based on backtracking search optimization algorithm (BSA) is proposed for linear antenna array pattern synthesis with prescribed nulls at interference directions. Pattern nulling is obtained by controlling only the amplitude, position, and phase of the antenna array elements. BSA is an innovative metaheuristic technique based on an iterative process. Various numerical examples of linear array patterns with the prescribed single, multiple, and wide nulls are given to illustrate the performance and flexibility of BSA. The results obtained by BSA are compared with the results of the following seventeen algorithms: particle swarm optimization (PSO), genetic algorithm (GA), modified touring ant colony algorithm (MTACO), quadratic programming method (QPM), bacterial foraging algorithm (BFA), bees algorithm (BA), clonal selection algorithm (CLONALG), plant growth simulation algorithm (PGSA), tabu search algorithm (TSA), memetic algorithm (MA), nondominated sorting GA-2 (NSGA-2), multiobjective differential evolution (MODE), decomposition with differential evolution (MOEA/D-DE), comprehensive learning PSO (CLPSO), harmony search algorithm (HSA), seeker optimization algorithm (SOA), and mean variance mapping optimization (MVMO). The simulation results show that the linear antenna array synthesis using BSA provides low side-lobe levels and deep null levels

Commercial Regional Space/Airborne Imaging

In this work goal programming is used to solve a minimum cost multicommodity network flow problem with multiple goals. A single telecommunication network with multiple commodities (e.g., voice, video, data, etc.) flowing over it is analyzed. This network consists of: linear objective function, linear cost arcs, fixed capacities, specific origin-destination pairs for each commodity. A multicommodity network flow problem with goals can be successfully modeled using linear goal programming techniques. When properly modeled, network flow techniques may be employed to exploit the pure network structure of a multicommodity network flow problem with goals. Lagrangian relaxation captures the essence of the pure network flow problem as a master problem and sub-problems (McGinnis and Rao, 1977). A subgradient algorithm may optimize the Lagrangian function, or the Lagrangian relaxation could be decomposed into subproblems per commodity; each subproblem being a single commodity network flow problem. Parallel to the decomposition of the Lagrangian relaxation, Dantzig-Wolfe decomposition may be implemented to the linear program. Post-optimality analyses provide a variety of options to analyze the robustness of the optimal solution. The options of post-optimality analysis consist of sensitivity analysis and parametric analysis. This mix of modeling options and analyses provide a powerful method to produce insight into the modeling of a multicommodity network flow problem with multiple objectives