86 articles for “X. Tang”

Research ArticleOpen accessIn the abstractReflectivity of Reflectarrays Based on Dielectric SubstratesM. Y. Ismail, M. Inam, A. M.A. ZaidiProblem statement: Reflectarrays provide a low cost and low profile solution for antennas required for high gain applications but their use is restricted in some applications due to the narrow bandwidth and high loss performance. These performance limitations can be attributed to different sources of reflectivity of the reflectarrays. This work provides a thorough investigation on the reflectivity performance of … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 1 · 31 Mar 2010 · 8,635 accessesView PDF Cite

Research ArticleOpen accessIn the abstractInfluence of Hillside Gradient on Forest Road Cross Section Components in a Loamy Clay SoilAidin Parsakhoo, Seyed Ataollah Hosseini, Majid Lotfalian, Hamid JalilvandProblem statement: In this study to evaluate the effects of hillside gradient on forest road cross section components in a loamy clay soil the amount of cut and fill slopes gradient and length, road bed and earthwork width were taken on tangent sections in a lat talar forest roads of Iran. Approach: The objective of this study were: (i) to … …American Journal of Applied Sciences, Vol. 6, Issue 6 · 30 Jun 2009 · 6,994 accessesView PDF Cite

Research ArticleOpen accessIn the abstractCost Elasticities of Reliability and MTTF for k-out-of-n SystemsAli Muhammad Rushdi, Abdulaziz Efain AlsulamiThe application of the concept of cost elasticity of reliability was extended from the parallel system to the partially redundant or k-out-of-n:G(F) system (or k-out-of-n system, for short). An expression for the cost elasticity of reliability was derived for a general k-out-of-n system. The expression yielded acceptable results for a wide range of values for k, n, and component reliability. … …Journal of Mathematics and Statistics, Vol. 3, Issue 3 · 30 Sep 2007 · 7,299 accessesView PDF Cite

Research ArticleOpen accessIn the abstractCommunity Based Organic Farming and Social Capital in Different Network Structures: Studies in Two Farming Communities in BangladeshM. Hammadur Rahman, Masahiro YamaoThe main purpose of this study was to assess the status of social capital in different networks of two farming communities (organic and conventional farming) in Tangail district of Bangladesh. Social trust and reciprocity existed in the community were measured in informal, generalized and institutional networks of these two communities. The study was conducted by administering questionnaire survey among the … …American Journal of Agricultural and Biological Sciences, Vol. 2, Issue 2 · 30 Jun 2007 · 8,745 accessesView PDF Cite

Research ArticleOpen accessIn the abstractA Comparative Classification of Aspect Mining ApproachesBounour Nora, Ghoul Said, Atil FadilaIn object oriented paradigm, the implementation of a concern is typically scattered over many locations and tangled with the implementation of other concerns, resulting in a system that is hard to explore and understand. Identifying such code automatically greatly improves both the maintainability and the evolveability of the application. Aspect mining aims to identify crosscutting concerns in existing systems, thereby … …Journal of Computer Science, Vol. 2, Issue 4 · 30 Apr 2006 · 6,778 accessesView PDF Cite

Research ArticleOpen accessIn the abstractE-Learning under WebCTZ. A. Al-Khanjari, N. S. Kutti, H. A. RamadhanWith the introduction of Web-Based Instruction (WBI) the traditional classroom-based higher education could be made more effective form of instruction. But the studies have shown the negative results[1]. On the other hand the distance education has derived the direct benefit of WBI through extending classroom instruction in online to reach every remote student. However researchers have identified reasons for the … …Journal of Computer Science, Vol. 1, Issue 4 · 31 Dec 2005 · 6,322 accessesView PDF Cite