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321 articles for “working”
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Research ArticleOpen accessIn the abstractOptimal Control of the D-Policy M/G/1 Queueing System with Server BreakdownsKuo-Hsiung Wang, Ching-Chang Kuo, Jau-Chuan KeThis study deals with a single server in the D-policy M/G/1 queueing system in which the server is turned off at the end of each complete period and is activated again only when the cumulative completion times of the customers in the system exceeds a given level D. While the server is working, he is subject to breakdowns according to … …American Journal of Applied Sciences, Vol. 5, Issue 5 · 31 May 2008 · 6,604 accessesView PDFCite
Research ArticleOpen accessIn the abstractAging Study and Lifetime Estimation of Transformer Mineral OilMohammad R. MeshkatoddiniProblem statement: Power transformer is the most expensive equipment in electrical network; and the mineral oil has the main roles of insulating and cooling in it. Oil is subjected to the degradation because of the ageing, high temperature and chemical reactions such as the oxidation. Then the oil condition has to be checked regularly and reclaimed or replaced when necessary, … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 4 · 31 Mar 2008 · 11,100 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Evaporator Lengths and Ratio of Check Valves to Number of Turns on Internal Flow Patterns of a Closed-Loop Oscillating Heat-Pipe With Check ValvesS. Rittidech, P. Meena, P. TerdtoonA visualization study of the internal flow patterns of a closed-loop oscillating heat-pipe with check valves (CLOHP/CV) at normal operating condition for several evaporator lengths (Le), and ratio of check valves to number of turns (Rcv) has been conducted. This article describes the effects of varying Le, and Rcv on flow patterns. The CLOHP/CV used a Pyrex glass tube with … …American Journal of Applied Sciences, Vol. 5, Issue 3 · 31 Mar 2008 · 7,266 accessesView PDFCite
Research ArticleOpen accessIn the abstractFactors Affecting Agricultural Land Fragmentation in Iran: A Case Study of Ramjerd Sub District in Fars ProvinceKhalil Kalantari, Gholamhossein AbdollahzadehThe objective of this study was to examine the factors influencing fragmentation of landholdings commonly regarded as a major obstacle to agricultural development in Iran. A sample of farmers was selected and household and village-level data from 12 villages of Ramjerd sub district in Fars province were used to test these factors empirically. Required data were collected by questionnaire from … …American Journal of Agricultural and Biological Sciences, Vol. 3, Issue 1 · 31 Mar 2008 · 8,407 accessesView PDFCite
Research ArticleOpen accessIn the abstractMemory Convergence and Optimization with Fuzzy PSO and ACSSubhash C. Pandey, Dr. P. MisraAssociative neural memories are models of biological phenomena that allow for the storage of pattern associations and the retrieval of the desired output pattern upon presentation of a possibly noisy or incomplete version of an input pattern. In this study, we introduce fuzzy swarm particle optimization technique for convergence of associative neural memories based on fuzzy set theory. A Fuzzy … …Journal of Computer Science, Vol. 4, Issue 2 · 28 Feb 2008 · 7,169 accessesView PDFCite
Research ArticleOpen accessIn the abstractMobile Computing Changing the Traditional Ways of Organizing the Construction CompanyNataša Šuman, Mirko PšunderThe focus of this paper is to represent some important mobile computing potential which help tackle project collaboration and information dissemination problems. Especially in the construction industry where workers have no steady working places mobile computing is shown as a chance for optimising the traditional ways of organizing Construction Company. Special attention is given to the description of changing the … …American Journal of Applied Sciences, Vol. 5, Issue 1 · 31 Jan 2008 · 7,025 accessesView PDFCite
Research ArticleOpen accessIn the abstractAssessment of Constructed Wetland Biological Integrity Using Aquatic MacroinvertebratesC. Galbrand, I. G. Lemieux, Abdel E. Ghaly et al.A surface flow constructed wetland consisting of seven cells was used to treat the leachates from a decommissioned landfill. Wetland monitoring was performed by evaluating the treatment efficiency of the landfill leachate and the wetland biological integrity of the wetland. The water quality samples were analyzed for iron, manganese, phosphorus (orthophosphate), pH, dissolved oxygen (DO), nitrogen (ammonia, nitrate, nitrite and … …OnLine Journal of Biological Sciences, Vol. 7, Issue 2 · 31 Dec 2007 · 7,415 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Story and a Belief in Spirit of Phoo (Grandpa) Loop : An Access to Resources of Fishermen at the Ubon Rattana Dam, Khon Kaen, ThailandWichian Mibun, Chayan Vaddhanaphuti, Somsak Srisontisuk, Chusak WittayapakThe purposes of the article were twofold. 1. To bring a belief in spirit to gain an access to resources. 2. To propose a working model of and adapting method for utilizing resources of fishermen at the Ubon Rattana Dam. The documentary and field data were collected using participant observations and in-depth interviews. The theory of access was used to … …Journal of Social Sciences, Vol. 3, Issue 4 · 31 Dec 2007 · 7,923 accessesView PDFCite
Research ArticleOpen accessIn the abstractEntrepreneurships Barriers of Pond Fish Culture in Bangladesh- A Case Study from Mymensingh DistrictMd A. Sarker, Ataharul H. Chowdhury, Yoshihito ItoharaThe main purpose of the study was to identify the major barriers of pond fish culture entrepreneurships in Bangladesh. The population of the study consisted of all 285 fish farmers of the selected villages of Muktagacha upazila (sub-district) of Mymensingh district. Needed data were collected with questionnaire by personal interviewing of the respondents. Result shows that lack of technical knowledge … …Journal of Social Sciences, Vol. 2, Issue 3 · 30 Sep 2007 · 7,469 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Case Study of River Rehabilitation for Fish in Northern Italy: The Panaro River ProjectClaudio Comoglio, Enrico Pini Prato, Mauro Ferri, Massimiliano GianaroliThe restoration of longitudinal connectivity of a watercourse altered by man-made obstacles is a key issue for the protection and safeguard of freshwater ecosystems and the construction of fish passes constitutes a relevant ad hoc measure. However, in many countries, like Italy, there is still not an adequate technical-scientific background and experience in this field and therefore several migratory species … …American Journal of Environmental Sciences, Vol. 3, Issue 3 · 30 Sep 2007 · 7,027 accessesView PDFCite