This paper studies the following online replacement problem. There is a real function f(t), called the ow rate, deened over a nite time horizon 0; T]. It is known that m f(t) M for some reals 0 m < M. At time 0 an online player starts to pay money at the rate f(0). At each time 0 < t T the player may changeover and continue paying money at the rate f(t). The complication is that each such chang...

Trait anxiety is a personality characteristic that describes the tendency to feel anxious across a variety of situations, while state anxiety refers to the anxiety experienced in a specific situation (Cox, 2007). Previous research has suggested that high trait anxious individuals experience more situation-specific state anxiety (Horikawa & Yagi, 2012). Additionally, prior research has indicated...

the aim of the present study was to evaluate the effect of pressure andattentional instruction on table tennis players&apos; performance. for this purpose, 16table tennis players were tested in 4 conditions with different attentionalinstructions and pressure conditions. the test included a table tennis task: the ballcolor signified the target where the ball had to be hit and the player had to p...

The purpose of this study was to examine the relationships of achievement goal orientations and perceived motivational climate to perceptions of the intensity and direction of competitive state anxiety in a sample of university athletes representing various team sports. Although some studies have demonstrated that task orientation and mastery climate are associated with adaptive emotional patte...

In this study we utilized the concept of commitment to explain the impact of coaching practices on student-athlete's behaviour. We examined the impact of commitment to the coach on the coaching outcome of in-role behaviour, and the influence of coaching practices, of information sharing, training, and encouraging teamwork, on the formation of relationships. We adopted measures from the organiza...

valid objective measure that can be easily carrying for assessment of  competitive anxiety is not available in iran. competitive state anxiety inventory-2r (csai-2r) is introduced as a quick and easy diagnostic tool for competitive anxiety. the aim of this study was to determine the psychometric properties of csai-2r in the part of iranian society. the study population included all volleyball, ...

Energy companies in a competitive market face dilemma between the short-term revenue benefits of using fossil fuels and long-term investing renewables. This is caused by uncertainties price competition, return on investment renewables, fuels. study experimentally investigated whether carbon tax contributes to overcoming this conflict an online multi-player game. The participants played role ene...

This study presents a systematic review of psychological studies applied to futsal. A total of 23 studies were analyzed within five sections: a year overview and the name of journals, research designs, data collection, sample characteristics, and a focus category. This study found that the first psychological articles that were applied to futsal were published in 2008, and the number of publica...

The UT Austin Villa 2003 simulated online soccer coach was a first time entry in the RoboCup Coach Competition. In developing the coach, the main research focus was placed on treating advice-giving as a learning problem. The coach learns to predict agent behavior from past observations and automatically generates advice to improve its team’s performance. Using this approach, the UT Austin Villa...

The purposes of this study were to describe the lower extremities joints range motion (ROM) profile using a comprehensive approach in futsal players and examine potential player position (goalkeepers vs. outfield players), competitive level (first [top] division second division), number playing years, sex (males females), bilateral (dominant limb non-dominant limb) differences. A total 72 male ...