A COMPARISON OF SINGLE- AND DOUBLE-LEG RUNNING VERTICAL JUMPS IN VOLLEYBALL

Single- and double-leg vertical jumps are often performed in volleyball games. But the contribution from individual leg in single- and double-leg running vertical jump skills in volleyball has not been revealed. The purpose of this study was to determine the differences between single- and double- leg running vertical jumps (1-LRVJ and 2-LRVJ) on the biomechanical characteristics. Ten male college volleyball players voluntarily participated in this study. Two volleyball running vertical jumps were executed randomly. Three trials of each running vertical jump were recorded for each subject. Data were collected using six infra-red Qualisys motion capture cameras at 180 Hz sampling rate and two AMTI force platforms at 1800 Hz sampling rate, respectively. The jump height of 2-LRVJ was significantly higher than 1-LRVJ (P< .05), In push-off phase, 1-LRVJ had less angle change, but greater moment and higher impact force (P< .05). These results suggested that 1-LRVJ product higher leg stiffness with 2-LRVJ, it also increase higher risk of injury. We suggested using two- leg jumping style to enhance jump high, and avoid lower limbs injury

Poly[[μ2-1,4-bis­(4,5-dihydro-1,3-oxazol-2-yl)benzene-κ2 N:N′]di-μ2-chlorido-cadmium]

In the title coordination polymer, [CdCl2(C12H12N2O2)]n, the CdII ion, situated on an inversion center, is coordinated by four bridging Cl atoms and two N atoms from two 1,4-bis­(4,5-dihydro-1,3-­oxazol-2-yl)benzene (L) ligands in a distorted octa­hedral geometry. Each L ligand also lies across an inversion center and bridges two CdII ions, forming infinite two-dimensional recta­ngular layers running parallel to (010)

Innovate with Complex Information Technologies: A Theoretical Model and Empirical Examination

Complex information technologies (CITs), such as ERP packages, have become the core component of modern organizations. Corporate investments in CITs have soared to a record high. Firms need to creatively apply the technologies in order to adapt to the ever-changing environments and realize the full potential of the technologies. We approach this issue from the perspective of ‘Innovate with IT’, a post-acceptance usage behavior that describes innovative use of information technologies to support individual task performances. Drawing upon the IS Continuance (ISC) model, as well as the managerial and individual factors that facilitate higher level IT use, a model is theoretically developed to understand employees’ novel use of CITs. A field study was conducted in a large manufacturing firm using ERP packages to empirically validate the model. The results suggest that the ISC model, personal propensity toward IT innovations, and management support jointly nurture employees’ creative use of complex technologies