Let M be a simply connected complex submanifold of C . We prove that M is irreducible, up a totally geodesic factor, if and only if the normal holonomy group acts irreducibly. This is an extrinsic analogue of the well-known De Rham decomposition theorem for a complex manifold. Our result is not valid in the real context, as it is shown by many counter-examples.

Since their inception, social networking sites (SNSs) have experienced exponential growth. While substantial research has been dedicated to users’ initial adoption of SNSs, the fall of MySpace reminds us that the long-term success of SNSs depends on users’ post adoption staying power. Inspired by this, this work-in-progress investigates users’ “stickiness” with a specific SNS. Based on Li et al...

This paper reports on an empirical investigation of the relationship between print and hypertext reading skills. Subjects in the study were university students at a public Midwestern university. A repeated-measures, counter-balanced design was employed. Subjects were categorized as highand low-ability readers based on a standardized measure of reading achievement. Experimental tasks required su...

Content contribution from individuals is critical to the viability of online communities. In this study we identify the factors that are associated with the quantity and the quality of content sharing in a photo sharing community, where the act of content creation is decoupled from the act of content sharing. We draw on theories of intrinsic and extrinsic motivation, and find that the prospect ...

abstractthe aims of the present research included, investigating the possible relationships between the four aspects of cultural attitudes based on the hofsted model(masculinity, power distance, uncertainity avoidance and collectivism) and the staff's creativity in the ministry of welfare and social security. therefore, a statistical sample of 150 people was chosen from the employees of th...

Youth deviance has always been a major concern and an irritant issue and the focal attention among various societies and it has also been the focus of attention by a large number of authorities. This sociological study deals with the cultural tendency of the youth to deviance by a sociological procedure. Using a clustering method, in this survey, the data were obtained from a sample including 3...