Shot peening applies a residual compressive stress field (RCSF) on the surface of parts. It also shifts “crack nucleation sites” to sub-surface locations. A nondestructive method of measuring the stresses, Sin2ψ was utilized here and the stress values introduced to Ansys software. For this purpose, uniform stress in all directions was applied on the con rod. Loading on the rod in Ansys had thre...

Prediction of future values of a shot noise process observed on a discrete lattice of points is considered. The shot magnitudes are assumed to be independent and identically distributed and arrive via a Poisson process; the eeect of each shot dissipates and/or accumulates according to a known shot function. Conditional mean and linear point predictors of future process values are developed. Dis...

A common video indexing technique is to segment a video sequence into shots and then select representative key-frames. The process of shot break detection is a fundamental component in automatic video indexing, editing, and archiving. This paper introduces a novel video cut detection technique which performs in the frequency domain. It is computationally tractable and robust with respect to sud...

Suicide bombings are the leading cause of death from terrorism in Israel. Counterterror tactics, such as the targeted killings or preemptive arrests of terror leaders or suspects, are meant to prevent such attacks. To investigate whether these tactics are successful, we estimated via maximum likelihood a family of shot-noise models from monthly data covering 2001 through 2003 to see whether we ...

This study draws on absorptive capacity theory and organizational learning perspective to examine and elaborate the roles of IT in influencing firm innovation in the alliance network context of pharmaceutical industry. We focused on three types of IT-enabled knowledge capabilities and one specific type of alliance network structure structural holes and examine whether and how they interact to j...

No abstract available.

Innovation has been a topic of considerable interest to researchers and practitioners. Particularly, the networks within which firms operate and their properties (e.g., structural holes) are suggested to affect firms’ innovation performance. One stream of research finds that structural holes are conducive to firms’ innovation because of the heterogeneous information about alternatives that firm...

Very preliminary version; 09/23/07. I am grateful to John Hagedoorn and Wilko Letterie for their invaluable support and advice. I am also very appreciative of the helpful comments and suggestions offered

Nowadays, developed and applied hydrology become very important thing in the life due to the wide verity advantages for the applications of this field. Hydraulic Structures such as crump weir are placed in channels to estimate or measure flow rate and flow control devices. In this study there is a new performance for crump weir which appears by adding opening holes in the model  of crump weir. ...

We develop a contingency theory for how structural closure in a network, defined as the extent to which an actor’s network contacts are connected to one another, affects the initiation and adoption of change in organizations. Using longitudinal survey data supplemented with eight indepth case studies, we analyze 68 organizational change initiatives undertaken in the United Kingdom’s National He...