MAST flight system dynamic performance

The MAST Flight System as a test bed for large space structure control algorithms is discussed. An overview is given of the control system architecture. The actuators, the sensors, the control computer, and the baseline damping algorithm are discussed

A Dynamic Look at Subprime Loan Performance

Does delinquency have any predictive power for the future performance of a mortgage? Analysis of a sample of subprime mortgages from the Loanperformance database on securitized private-label pool collateral using a two-step estimation procedure to control for the endogeneity of delinquency reveals strong support for the distressed prepayment theory that very delinquent loans are more likely to prepay than to default and that prepayment rates increase substantially as delinquency intensity increases. While delinquency leads predominantly to termination of a loan through prepayment, negative equity leads to termination through default. Does delinquency have any predictive power for the future performance of a mortgage? Analysis of a sample of subprime mortgages from the Loanperformance database on securitized private-label pool collateral using a two-step estimation procedure to control for the endogeneity of delinquency reveals strong support for the distressed prepayment theory that very delinquent loans are more likely to prepay than to default and that prepayment rates increase substantially as delinquency intensity increases. While delinquency leads predominantly to termination of a loan through prepayment, negative equity leads to termination through default

Rumination and Performance in Dynamic, Team Sport

People high in rumination are good at tasks that require persistence whereas people low in rumination is good at tasks that require flexibility. Here we examine real world implications of these differences in dynamic, team sport. In two studies, we found that professional male football (soccer) players from Germany and female field hockey players on the US national team were lower in rumination than were non-athletes. Further, low levels of rumination were associated with a longer career at a higher level in football players. Results indicate that athletes in dynamic, team sport might benefit from the flexibility associated with being low in rumination

Distorted Performance Measures and Dynamic Incentives

Incentive contracts must typically be based on performance measures that do not exactly match agents’ true contribution to principals’ objectives. Such misalignment may impose difficulties for effective incentive design. We analyze to what extent implicit dynamic incentives such as career concerns and ratchet effects alleviate or aggravate these problems. Our analysis demonstrates that the interplay between distorted performance measures and implicit incentives implies that career and ratchet effects have real effects, that stronger ratchet effects or more distortion may increase optimal monetary incentives, and that bureaucratic promotion rules may be optimal.Search; Learning; Information and Knowledge; Communication; Belief; Compensation Packages; Payment Methods; Labor Management.

Competitive Advantages as a Complete Mediator Variable in Strategic Resources, Dynamic Capabilities and Performance Relations in the Car Sales Sector

Taking the resource-based view –RBV- and the dynamic capability view –DCV- as an orientation, the main aim of this study is to develop the mediator role that competitive advantages play in the relations between strategic resources, dynamic capabilities and performance. The study takes place in a dynamic and changing sector: the sale of new cars in Portugal. The results show that (a) achieving competitive advantages, which are decisive for business results, depends on the available strategic resources and the generating of dynamic capabilities, (b) in dynamic and changing sectors strategic resources are essential to generate dynamic capabilities, (c) firms must center their attention on, more than results, the generating of sustainable competitive advantages as these act as a mediator variable of the effect of strategic resources and dynamic capabilities on performance. The data scrutiny uses structural equation modeling (SEM) through PLS as the statistical instrument. The sample comprises 89 firms which sell new cars in Portugal

Sit-and-Wait Strategies in Dynamic Visual Search

The role of memory in visual search has lately become a controversial issue. Horowitz and Wolfe (1998) observed that performance in a visual search task was little affected by whether the stimuli were static or randomly relocated every 111 ms. Because a memory-based mechanism, such as inhibition of return, would be of no use in the dynamic condition, Horowitz and Wolfe concluded that memory is likewise not involved in the static condition. However, Horowitz and Wolfe could not effectively rule out the possibility that observers adopted a different strategy in the dynamic condition than in the static condition. That is, in the dynamic condition observers may have attended to a subregion of the display and waited for the target to appear there (sit-and-wait strategy). This hypothesis is supported by experimental data showing that performance in their dynamic condition does not differ from performance in another dynamic condition in which observers are forced to adopt a sit-and-wait strategy by being presented with a limited region of the display only