Web 2.0 sociable technologies (such as social network sites, SNS) create new online interpersonal collaboration and communication. Particularly, given the proliferation of virtual community page (VCP, ex. Facebook fan page and group) participation, the sustainability of VCP has been recognized as a critical issue. While existing studies have started to address this issue through classical indiv...

We introduce a system that eliminates the need to run programs in privileged process contexts. Using our system, programs run unprivileged but may execute certain operations with elevated privileges as determined by a configurable policy eliminating the need for suid or sgid binaries. We present the design and analysis of the “Systrace” facility which supports fine grained process confinement, ...

Successful projects represent the effective culmination of management skills, planning, and individual project member strengths. In operations management, such strengths are often viewed predominantly from the perspective of skill base. However, it has become increasingly evident that behavioral traits associated with individuals play a very significant, if not ultimately dominating, role in th...

Modern application landscapes and especially huge enterprise applications, like data warehouses, used for decision support or other analyzing purposes get more and more complex. To manage, use and maintain these systems the need for metadata management has increased. In consequence of new tasks being identified by new groups of data warehouse users, the role of metadata management implies more ...

The application of signal processing techniques to wireless communications is an emerging area that has recently achieved dramatic improvement in results and holds the potential for even greater results in the future as an increasing number of researchers from the signal processing and communication areas participate in this expanding field. Today, wireless multimedia is moving from vision to r...

Evolutionary and population dynamics models suggest that the migration rate will affect the probability of survival in fragmented landscapes. Using data for butterfly species in the fragmented British landscape and in immediately adjoining areas of the European continent, this paper shows that species of intermediate mobility have declined most, followed by those of low mobility, whereas high-m...

The present study intends to design a methodology for examining the influence of modern information and communication technology on business models (BMs). Theoretical framework is mainly selected based on literature as well as consultation with expert focus groups. This methodology is validated by expert judgment and simulated as a real case applying system dynamics. The outcome of the survey i...

Kin and group interactions are important determinants of reproductive success in many species. Their optimization could, therefore, potentially improve the productivity and breeding success of managed populations used for agricultural and conservation purposes. Here we demonstrate this potential using a novel approach to measure and predict the effect of kin and group dynamics on reproductive o...

Past research suggests that small groups are self-organizing systems, and that social resilience may be measured as the meta-flexibility of group dynamics: the ability to shift back and forth from flexiblity to rigidity in response to conflict. This study extends these prior results, examining the impact of experimentally induced internal conflict and group-level conflict resolution on group dy...