Internet based applications and in particular e-learning ones have proved very successful when applied to training diverse groups in small and disparate communities. This paper discusses the potential of e-learning methods in training in the rural sector of northeastern Greece. A survey was carried out amongst Greek rural communities in the region of Eastern Macedonia and Thrace during the autu...

This chapter looks into the key infrastructure factors affecting the success of small companies in developing economies that are establishing B2B e-commerce ventures by aggregating critical success factors from general e-commerce studies and studies from e-commerce in developing countries. The factors were identified through a literature review and case studies of two organizations. The results...

Introduction The damping rate of ion-acoustic waves in plasma plays an important role in establishing the threshold for the onset of stimulated Brillouin scattering, ion-temperature-gradient instability, current-driven ion-acoustic instability, and other drift-wave microinstabilities. The effect of electron-ion (ei) collisions on the ion-acoustic damping rate has been recently investigated by a...

The earliest detectable mammalian prespliceosome complex (E) contains the non-snRNP splicing factor U2AF, U1 snRNP, and several spliceosome-associated proteins (SAPs). We show that specific complexes, designated E3' and E5', assemble independently on RNAs containing only a 3' or 5' splice site, respectively. U2AF is enriched in E3', whereas U1 snRNP is enriched in E5'. Using a highly sensitive ...

In 1987, Lovv asz conjectured that every brick G diierent from K 4 , C 6 , and the Petersen graph has an edge e such that G e is a matching covered graph with exactly one brick. Lovv asz and Vempala announced a proof of this conjecture in 1994. Their paper is under preparation. We present here an independent proof of their theorem. We shall in fact prove that if G is any brick diierent from K 4...

Both cell-cell adhesion and oriented cell division play prominent roles in establishing tissue architecture, but it is unclear how they might be coordinated. Here, we demonstrate that the cell-cell adhesion protein E-cadherin functions as an instructive cue for cell division orientation. This is mediated by the evolutionarily conserved LGN/NuMA complex, which regulates cortical attachments of a...

Business and information systems professionals continue to struggle to address the complex issues involved in determining payoffs from information technology (IT) investments in e-business environment. The business value returned by IT investments in E-business environment is being viewed with increasing skepticism by researchers and practitioners. Quantifying the IT investments payoff has alwa...

This work was undertaken to insul'e satisfactory accuracy of analytical results obtained by var ious laboratories using diffcrent fundamcntall'cference methods for the determination of small amounts of carbon monoxide in ail' . As these reference methods are used to es tablish th e composition of atmospheres in many researches dealing with th e hazards, detection, and estimation o f carbon mono...

Various classes of nite-dimensional closed convex cones are studied. Equivalent characterizations of pointed cones, pyramids and rational pyramids are given. Special class of regular cones, corresponding to \continuous linear" quasiorderings of integer vectors is introduced and equivalently characterized. It comprehends both pointed cones and rational pyramids. Two diierent ways of determining ...

For given graphs H1, H2, H3, the 3-color Ramsey number R(H1, H2, H3) is the smallest integer n such that if we arbitrarily color the edges of the complete graph of order n with 3 colors, then it always contains a monochromatic copy of Hi colored with i, for some 1 6 i 6 3. We study the bounds on 3-color Ramsey numbers R(H1, H2, H3), where Hi is an isolate-free graph different from K2 with at mo...