Sign inSubmit
Tips: “quotes” for a phrase · author:Lee · a DOI goes straight to its article

144 articles for “Operation research”
Set a search alert
Research ArticleOpen accessIn the abstractCorrelation Between Dispersion and Mean Toassess Healthcare Servicee FficiencyRamalingam ShanmugamMotivation for this research work started while helping a hospital administrator to assess whether patient oriented activity duration, X≥0 is reflecting the service’s efficiency? Higher value of the sample mean duration, X implies lesser productivity in the hospital and more healthcare cost. Likewise, larger value of sample dispersion, sx2 in the service durations is an indicator of lesser reliability and … …Current Research in Biostatistics, Vol. 2, Issue 2 · 30 Aug 2012 · 6,873 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Examination of Back Ground and Strategies for Privatization of Agricultural ExtensionBagher ArayeshProblem statement: Agricultural extension as an important tool to achieve food for people has always been faced with challenges. One of these challenges is relation to the privatization of agricultural extension which has been suggested in most countries due to inefficiency of governmental systems of agricultural extension and their financial problems. The main purpose of current study was to examination … …American Journal of Agricultural and Biological Sciences, Vol. 7, Issue 1 · 5 Jan 2012 · 7,787 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Ways to Conserve and Develop Isan-Shadow Puppet Performances for Promoting Cultural Value and WorthBooncharoen Bamrungchoo, Boonsom Yodmalee, Khaentaphon SamdaengdejProblem statement: Nang Pra Mo Thai Isan (Isan-Shadow puppet performance) is a kind of cultural plays which has been performed for a long time. At present, it has declined from people’s popularity so it should be conserved and developed in order to promote its folk-cultural value and worth. The purposes of this research were: (1) to investigate the diffusion, the … …Journal of Social Sciences, Vol. 6, Issue 3 · 30 Sep 2010 · 7,723 accessesView PDFCite
Research ArticleOpen accessIn the abstractFull Model Wind Tunnel Study on the Xia-Zhang Bridge Under Operation StageAyad Thabit Saeed, Zhang Liang Liang, Yang Zhuan Yun et al.Problem statement: Long-span cable-stayed bridges under service and particular construction conditions are very susceptible to wind action due to their great flexibility, so the aerodynamic stability is becoming a major concern in the design and construction phrases. Cable-stayed bridges may exhibit wind-induced vibration phenomena such as flutter, buffeting and vortex oscillation under wind excitation. The study concentrated on the issues … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 2 · 30 Jun 2010 · 8,191 accessesView PDFCite
Research ArticleOpen accessIn the abstractOn the Use of Rolling Element Bearings' Models in Precision MaintenanceIoannis S. Zotos, Theodore N. CostopoulosProblem statement: Rolling element bearings form a very important part of machinery. The increasing demands on their continuous reliable operation under diverse environments make maintenance a very important step towards the efficient use of them. To this end, precision maintenance is a very useful practice, since it deals not only with finding a possible fault of a machine, but also … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 2 · 30 Jun 2009 · 7,413 accessesView PDFCite
Research ArticleOpen accessIn the abstractSupply Chain Performance Evaluation: Trends and ChallengesEzutah U. Olugu, Kuan Y. WongProblem statement: In today’s manufacturing world, globalization policies and rejuvenation have created a more intensive competition amongst manufacturers. On the other hand, manufacturers have turned to the option of adopting innovative technologies, process re-engineering and strategies such as efficient supply chain management to achieve a sustainable competitive advantage. Effective supply chain performance measurement has been identified as a key issue … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 1 · 31 Mar 2009 · 8,464 accessesView PDFCite
Research ArticleOpen accessIn the abstractApplying Simulated Annealing For Optimal Operation of Multi-Reservoir SystemsF. Khodabakhshi, A. R. Ghirian, N. KhakzadThe need to optimize the operation of water reservoirs is an issue that is becoming increasingly a concern for water resources planners in developing countries. This issue particularly becomes more significant in large systems with multiple reservoirs where operation of one reservoir has an impact on the others. In other word, the set of reservoirs in these systems act like … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 1 · 31 Mar 2009 · 7,620 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Inner Diameter and Inclination Angles on Operation Limit of Closed-Loop Oscillating Heat-Pipes with Check ValvesP. Meena, S. Rittidech, P. TammasaengThis research was to study the effect of inner diameter and inclination angles on operation limit of a closed loop oscillating heat pipes with check valves (CLOHP/CV). A set of CLOHP/CV was made of copper tubes in combination of following dimension: 1.77 and 2.03 mm inside diameter: 10 turn, with R123 was used as the working fluid. The working fluid … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 2 · 30 Jun 2008 · 7,145 accessesView PDFCite
Research ArticleOpen accessIn the abstractOptimizing {0, 1, 3}-NAF Recoding Algorithm Using Block-Method Technique in Elliptic Curve CryptosystemMohsen Bafandehkar, Sharifah Md Yasin, Ramlan MahmodThe most expensive and time-consuming operation in Elliptic curve cryptosystem is scalar multiplication operation. Optimization of scalar multiplication will substantially enhance the ECC performance. Scalar multiplication can be improved by using an enhanced scalar recoding algorithm that can decrease the number of operations in the scalar representation process. The objective of this research is to introduce an efficient design and … …Journal of Computer Science, Vol. 12, Issue 11 · 30 Dec 2016 · 6,672 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Efficient Denoising Algorithm for Impulse Noise RemovalA. Rajamani, V. KrishnaveniNow-a-days the images acquired by the digital cameras and defective sensors tend to introduce noises during either image acquisition or transmission process. The quality of the image is degraded in a significant measure. Lot of research works was carried out for several decades to denoise the impulse noise and each approach has its own merits and demerits. This study deals … …Journal of Computer Science, Vol. 11, Issue 1 · 10 Sep 2014 · 6,814 accessesView PDFCite