Amount Of Jumps Research Articles

Does the Amount of Jumping with Respect to Positions During Volleyball Matches Affect the Team Success at the End of the Season?

In many sports like volleyball, jumping, balance and explosive strength which are biomotor abilities have become more important day by day to succeed. Athletes focus on games at game period so the time that they spend for improving their biomotor abilities can be less. Therefore, performance that obtained in preparation period and sustaining that performance in whole season affect significantly team rank at the end of the season. 
 
 In the lights of these informations, the affect of amount of jumps with respect to different positions was investigated in major league of Turkey in 2013-2014. There were 149 female volleyball players between the ages 17-27 (age 24.19 ± 2.42) in this study. 12 teams competed with each other and 125 games that is 455 sets were evaluated. Moreover; videos were analyzed three times by experts. Number of jumps in serve, block, spike and setting were recorded. Spearman Brown Order Differential Correlation Coefficient was used for determining the relations between dependent and independent variables and descriptive statistics in analyzing datum. In addition to this, Multiple Linear Regression Analysis was used for investigating regression level between independent and dependent variables. As a result of this, middle blockers jumped the most (M=155.86, SD=39.77) while opposites jumped the least (M=73.31, SD=23.49). The amount of jumps of wing spikers (r= -.130, p<.05) and middle blockers (r= -.185, p<.01) was negatively related with team success at the end of the season in low level. The total amount of jumps in different positions was negatively related with team success at the end of the season in low level too (r= -.156, p<.01). Setters, wing spikers, middle blockers and opposites were listed with respect to regression factor (ß) and their importance level for team success at the end of the league. In conclusion, number of jumps in different positions at game time affects team success positively.

Mesh Wireless Networks Capacity to Transport Voice over IP and Data in Rural Environments

This paper analyzes the effectiveness of VoIP in fixed mesh wireless networks considering the study of the standardization and performance of these types of networks and taking into account the instability of medium conditions from one node to another one which could affect the communication. The network capacity analysis is specifically focused in VoIP transport because it as an application that demands greater quality requirements than the ones required by data transmission. This is validated throughout a specific design that is implemented for one of the micronetworks of the EHAS-Silvia Project and simulated on the National Chiao Tung University Network Simulator, NCTUns 3.0 that allows to verify its correct operation and to establish the maximum network capacity considering specific factors of mesh networks as the amount of jumps, increase of traffic and fall and establishment of routes.

Optimal control and optimization algorithm of nonlinear impulsive delay system producing 1,3-Propanediol

According to the controllability of pulse times and the amount of jumps in the states at these times in the process of fed-batch culture producing 1,3-propanediol, this paper proposes a terminal optimal control model, whose constraint condition is the nonlinear impulsive delay system. The existence of optimal control is discussed and an optimization algorithm which is applied to each subinternal over one cycle for this optimal control problem is constructed. Finally, the numerical simulations show that the terminal intensity of producing 1,3-propanediol has been increased obviously.