The growing prominence of virtual organizations, such as Dell and Amazon.Com, has demonstrated the potential for virtual governance structures to achieve greater competitiveness than their more traditional counterparts. The designs of such organizations typically support three important characteristics: virtual customer interaction, virtual sourcing of complementary resources and assets from a ...

Emphasis on sustainable agriculture in Iran like the other developing countries, is responsedto the adverse environmental and economic impacts of conventional agriculture. Thisproblem, particularly about “greenhouse production” is considerable. The perceptions ofgreenhouse owners about the environmental, economical and social aspects of sustainableagriculture was discussed in this article. The ...

OBJECTIVES Being one of the main causes of morbidity and mortality in developed countries, ischaemic heart disease's (IHD) incidence and mortality present clear differences between and within countries. Several authors already proposed possible explanations based on the demography, environmental factors, diet and level of urbanisation. This study reflects the Portuguese reality concerning IHD, ...

Within the realm of medicinal chemistry, synthesis plays a pivotal role in any drug research and development endeavor. The ability to design elegant and economical synthetic routes is often a major factor for making a drug a commercial winner. Retrosynthetic analysis/ Synthon disconnection approach, introduced and advanced by Prof. E. J. Corey of Harvard University has served as a powerful driv...

Consider a weighted n-vertex, m-edge graph G with designated source s and destination t. The topology of G is known, while the edge weights are hidden. Our goal is to discover either the edge weights in the graph or a shortest (s, t)-path. This is done by means of agents that traverse different (s, t)-paths in multiple rounds and report back the total cost they incurred. Various cost models are...