in this paper,  a heuristic algorithm is proposed in order to solve a nonlinear lexicography goal programming (nlgp) by using an efficient initial point. some numerical experiments showed that the search quality by the proposed heuristic in a multiple objectives problem depends on the initial point features, so in the proposed approach the initial point is retrieved by data envelopment analysis...

abstract: purpose: the study was carried out to identify the strengths and weaknesses of the user interface of the islamic world science citation (isc) in the iranian science citation index. methodology: the method was a qualitative and applied one. to do this heuristic research, a checklist consisting of nielson's (pierotti, 2009), cherry et al (lancaster, 1997) and gulliver’s (2002) checklist...

unintended pregnancy is among the most troubling public health problems and a major reproductive health issue worldwide imposing appreciable socioeconomic burden on individuals and society. governments generally plan to control growth of births (especially wanted births as well as orphans and illegitimate births) imposing extra burden on public funding of the governments which inevitably affect...

urban green spaces are one of the most important services in modern cities and form a set of urban sustainable development factors which receive considerable attention from urban planners. this paper explains how land use can be optimally allocated to urban public green spaces. in this study, some of the factors influencing urban green spaces in a period from 1373 to 1384 were studied. moreover...

Large scale computer networks provide access to a bewilderingly large number and variety of resources, including retail products, network services, and people in various capacities. We consider the problem of allowing users to discover the existence of such resources in an administratively decentralized environment. We describe an approach for a system that accesses the distributed collection o...

When subjected to partial shading (PS), photovoltaic (PV) arrays suffer from the significantly reduced output. Although incorporation of bypass diodes at output alleviates effect PS, such modification results in multiple peaks power. Conventional algorithms-such as perturb and observe (P&O) hill-climbing (HC)-are not suitable be employed track optimal peak due their convergence local maxima. To...

Backtrack-style exhaustive search algorithms for NP-hard problems tend to have large variance in their runtime. This is because “fortunate” branching decisions can lead to finding a solution quickly, whereas “unfortunate” decisions in another run can lead the algorithm to a region of the search space with no solutions. In the literature, frequent restarting has been suggested as a means to over...

A great amount of effort has gone into studying correspondences between contemporary class structures and the distribution lifestyles media practices therein. Structural overlaps these spaces imply existence a symbolic order, where dominant factions society constitute taste keepers endowed with power to stigmatize those below them in social hierarchy. Yet, research not come terms reach depth th...