The purpose of this study was to compare performance factors of youth soccer players according to position. A total of 101 high school soccer players were selected and were classified into goalkeeper (n=7), defense (n=37), midfield (n=39), and forward (n=18) positions. All subjects were subjected to the Wingate test for anaerobic capacity, shuttle run test for aerobic capacity, and pass, kick, ...

We introduce skill chaining, a skill discovery method for continuous domains. Skill chaining produces chains of skills leading to a salient event—where salience can be defined simply as an end-of-task reward, or as a more sophisticated heuristic (e.g., an intrinsically interesting event (Singh et al., 2004)). The goal of each skill in the chain is to reach a state where its successor skill can ...

This study addresses seasonal predictability of South American rainfall during ENSO. The skill of empirical and coupled multi-model predictions is assessed and compared. The empirical model uses the previous season AugustSeptember-October Pacific and Atlantic sea surface temperatures as predictors for December-January-February rainfall. Coupled multi-model 1-month lead December-JanuaryFebruary ...

The effects of advanced age and cognitive resources on the course of skill acquisition are unclear, and discrepancies among studies may reflect limitations of data analytic approaches. We applied a multilevel negative exponential model to skill acquisition data from 80 trials (four 20-trial blocks) of a pursuit rotor task administered to healthy adults (19-80 years old). The analyses conducted ...

Human error is a significant and ever-growing problem in the healthcare sector. In this study, resource allocation problem is considered along with human errors to optimize utilization of resources in an emergency department. The algorithm is composed of simulation, artificial neural network (ANN), design of experiment (DOE) and fuzzy data envelopment analysis (FDEA). It is a multi-response opt...

Organizations are increasingly recognizing their workers as valuable resources. Therefore, workforce planning and policies that minimize the voluntary turnover of IT professionals are important. Using cognitive dissonance theory as a theoretical foundation, we propose and test research hypotheses that combine traditional voluntary turnover constructs with constructs of interest to the IT profes...

Research has generally revealed only a weak link, if any at all, between victimization-related experiences and job performance. Drawing on the commonly used conservation of resources perspective, we argue that such inconsistent evidence in the organizational literature stems from an over-focus on personal resources at the expense of considering the role of social resources. Victimization is an ...

We introduce an algorithm for cooperative planning in multi-agent systems. The algorithm enables the agents to combine (fuse) their plans in order to increase their joint profits. A computational resources and skills framework is developed for representing the planned activities of an agent under time constraints. Using this resource-skill framework, we present an efficient (polynomial time) al...

............................................................................................................................................... III ACKNOWLEDGEMENTS ....................................................................................................................... IV TABLE OF CONTENTS ..............................................................................................