BACKGROUND Vertical jump tests are used in athletics and rehabilitation to measure physical performance in people of different age ranges and fitness. Jumping ability can be analyzed through different variables, and the most commonly used are fly time and jump height. They can be obtained by a variety of measuring devices, but most are limited to laboratory use only. The current generation of s...

In human body movement simulation such as vertical jump by a forward dynamic model, optimal control theories must be used. In the recent years, new methods were created for solving optimization problems which they were adopted from animal behaviors and environment events such as Genetic algorithm, Particle swarm and Imperialism competitive. In this work, the skeletal model was constructed by Ne...

Purpose: The present study examined selected kinematic characteristics analysis of knee and ankle joints during block jump in elite junior volleyball players. Methods: Thirty male junior elite volleyball players (Mean±SD age: 18.14±1.12 y, height: 197.10±3.16 cm, sports history: 4.39±0.95 y, & weight: 771.20±59.83 N) participated in this study. A time-synchronized 5-camera sampling at 100 Hz w...

Futures contract is one of the most important derivatives that is used in financial markets in all over the world to buy or sell an asset or commodity in the future. Pricing of this tool depends on expected price of asset or commodity at the maturity date. According to this, theoretical futures pricing models try to find this expected price in order to use in the futures contract. So in this ar...

Elderberry is an alternative crop that holds promise for further commercial development in Florida. This 7-page fact sheet written by Kevin Athearn, David Jarnagin, Ali Sarkhosh, Juanita Popenoe, and Steven Sargent published the UF/IFAS Food Resource Economics Department reviews information on markets elderberries elderflowers estimates establishment costs potential returns a 3-acre elderberry ...

Mikhail Gorman, Amir Lahav, Elliot Saltzman, and Margrit Betke *Image and Video Computing Group Department of Computer Science Boston University 111 Cummington Street Boston, MA 02215 USA {mishaz,betke}@cs.bu.edu †Music Mind & Motion Laboratory Sargent College for Health and Rehabilitation Science Boston University 635 Commonwealth Avenue Boston, MA 02215 USA [email protected] **The Music & Neuroim...

Locusts jump by rapidly releasing energy from cuticular springs built into the hind femur that deform when the femur muscle contracts. This study is the first to examine the effect of temperature on jump energy at each life stage of any orthopteran. Ballistics and high-speed cinematography were used to quantify the energy, distance, and take-off angle of the jump at 15, 25, and 35°C in the locu...

There are two ways to read the paper by Ljungqvist and Sargent (and these two ways are reflected in the two parts of the title). First, as a response to Prescott’s argument about labor supply and taxes. Second, as an exploration of the implications of heterogeneity for aggregate labor supply. While the first clearly provided the motivation for the paper, I believe the second is likely to prove ...