Networking has become an important aspect of modern life in recent years either in sciences or interpersonal relations. Networks are studied as new forms of social organization in the sociology of science and technology, in the economics of network industries and network technologies, in business administration and in public policy. In the context of social sciences, scientists have recognized ...

Social Networking Sites (SNS) are one of the most popular business models on the Internet at the moment. At the same time, Social Networking is increasingly interesting as a topic of research in Information Systems. Drawing on existing research in the field, in this paper we propose to distinguish ISN (Internet Social Networking) as a phenomenon from its concrete manifestations in the various S...

the aim of this paper is to investigate the effects of information and communication technology on the structure of social networks. three major questions have been considered. first, how far does the combination of adolescent social links tend to be heterogeneous and how much is this change related to social and technological factors? second, does this alternation affect the power of adolescen...

moving toward third millennium is characterized by capabilities in transforming human life. specially, development of information technologies in everyday life lead to great changes in communication tools andour current understanding ofurban social life. indeed, telecommunications because of independency from time—space constraints, provide a new unlimited space for social interactions in globa...

This paper is concerned with two overlapping issues. In the first instance, we consider the apparent tensions between the visible effects of globalisation upon the Japanese economy and the claims of successive commentators that novel Japanese production systems of co-ordination and vertical supply are particularly conducive both to national and regional industrial stability. Secondly, we set ou...

Using satellite-tracked real-time data on the movements of a vertically integrated fishing firm’s own ships and its long-term supplier ships, this paper studies the impact of integration after the acquisition of those suppliers. The results suggest an increase in obedience to deployment policies, no change in fishing skills, higher productivity, and higher downstream product quality brought abo...

We use numerical simulations of turbulent, multiphase, self-gravitating gas orbiting in the disks of model galaxies to study the relationships among pressure, the vertical distribution of gas, and the relative proportions of dense and diffuse gas. A common assumption is that the interstellar medium (ISM) is in vertical hydrostatic equilibrium. We show that the disk height and mean midplane pres...

With the fast development of social media, the information overload problem becomes increasingly severe and recommender systems play an important role in helping online users find relevant information by suggesting information of potential interests. Social activities for online users produce abundant social relations. Social relations provide an independent source for recommendation, presentin...

This paper analyzes the effects of cooperative R&D in two vertically related duopolies, which are two final-good manufacturers and two input suppliers, with horizontal and vertical spillovers. Vertical R&D cartels yield a larger social welfare than non-cooperative R&D and, if the horizontal spillover rate between the input suppliers is not sufficiently high, than horizontal R&D cartels. Technol...