Membrane processes are today one of the key technologies for industrial gas separations and show growing interest for future use in sustainable production systems. Besides materials development, dedicated engineering methods are of major importance for the rigorous and most efficient design of membrane units and systems. Starting from approaches based on simplified hypotheses developed in the 5...

Kirzner’s (1973) theory of entrepreneurship emphasizes the equilibrating role of entrepreneurship. When the market is not in equilibrium, profit opportunities exist, and entrepreneurs discover and act on these profit opportunities to equilibrate the market. Because Kirzner focuses on entrepreneurial actions when profit opportunities exist, and does not describe where they come from, one could i...

The adoption of a model-driven approach to the construction of applications places the focus on business logic and takes it away from detailed middleware mechanisms. It also opens new opportunities for more detailed and more dynamic control of non-functional properties. This position statement illustrates the possibilities by considering the ways in which maintenance of security infrastructure ...

The new possibilities offered by WEB applications are pervasively and radically changing several areas. WEB applications, compared to WEB sites, offer substantially greater opportunities: a WEB application provides the WEB user with a means to modify the site status. WEB applications represent a competitive advantage: they are critical and strategically relevant resources, not only to communica...

The emergence of ubiquitous computing offers new possibilities and opportunities for organizations attempting to improve their productivity and effectiveness. In particular, the promises of ubiquitous computing are attractive to organizations such as transport firms, in which coordination of diverse sets of mobile units is central to organizational performance. This article analyzes the use of ...

BACKGROUND AND AIMS A phalanx growth form enables clonal plants to make better use of resource-rich patches, whereas a guerrilla growth form provides them with opportunities to escape from resource-poor sites. Leymus secalinus produces both spreading (guerrilla form) and clumping ramets (phalanx form). Here, the hypothesis that a trade-off between the two growth forms in L. secalinus exists und...

municipalities in developing countries spend the highest proportion of their annual budget on unsatisfactory solid waste management service. until recently, solid waste management services in ethiopia were mainly the responsibilities of municipalities, which culminated in inadequate service provision. thus, the integration of micro and small enterprises (mses) by the government has recently bei...