A common belief among human life history researchers is that “harsher” environments i.e., those with higher mortality rates and resource stress select for “fast” life histories, i.e. earlier reproduction and faster senescence. I show that these “harsh environments, fast life histories” or HEFLH hypotheses are poorly supported by evolutionary theory. First, I use a simple model to show that effe...

The paper discusses important challenges and research issues for adaptive workflow management systems (WfMS), especially if they shall be applied to enterprise-wide applications. It shows that an adaptive WfMS must provide support for different kinds of (dynamic) workflow (WF) changes in order to be applicable to a broader spectrum of processes. In this context, both, requirements for WF schema...

The Internet Chess Club, or ICC, is a highly successful virtual gaming community. This paper examines the evolution from its 1995 inception as a pure gaming community to the present day as a successful business with over 26,000 paid members. We give a particular focus on the underlying qualities the ICC possesses in order to succeed and grow such as utilization of real-world credibility indicat...

Businesses often benefit by forming alliances with other firms but risk becoming dependent on their partners. We discuss two situations in which dependence may create serious problems: fi rst. if a partner shuts down and. second. if a partner forms a relationship with a new partner. We examine collaborative relationships fo rmed by businesses operating in the U.S. hospital software systems indu...

s for talks scheduled for the 2007 annual meeting of the J.B. Johnston Club are listed in alphabetical order by presenting author. The final schedule of talks will be sent to the membership prior to the meeting and will be available at the registration desk during the meeting. This year’s Karger Invited Speaker will be Louis Lefebvre. Dr. Lefebvre’s abstract is listed first. Behavioral Drive an...

The development of educational technologies is enhancing a distinctive feature of learning environments: the learner’s personalized environment. However, the current literature in e-learning seems to neglect an important discussion: will individuals (learners and lecturers) and organizations face an enhancement concerning ethical dilemmas due to this evolution? To promote this discussion, this ...

1 2-link whole arm manipulation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 Zero-input motion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 Evolution of φ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 Trajectory tracking control in the case of rolling contact with L...

• Web information extraction • GIS, moving objects and spatio-temporal data management • Data evolution and version management

The central theme of this paper is enhancing the visibility of changes in order to retain good structure, simplicity and changeability of an evolving software system. Other related practical problems addressed in the paper are avoiding explosion of similar component versions, dealing with the impact of multiple changes affecting software during evolution, and reuse of features across system rel...

Many past studies into the diffusion of business innovation in the farming community focused on factors associated with the act of adoption. This study attempts to promote the diffusion of computer-based management innovation by gaining a clearer understanding of the evolution of farm management information systems (FMIS). Characteristics of farm businesses, their FMIS, and the factors related ...