We examine how time-consuming resource accumulation influences the classic strategy trade-off between commitment and flexibility. In particular, using 1975–95 data from the worldwide petrochemical industry, we study the impact of new plants’ time-to-build on firms’ decisions to invest under uncertainty. Our results suggest a nontrivial positive effect of resource accumulation lags on investment...

In this paper the time-optimal boundary control problem is presented for a distributed infinite order parabolic system in which time lags appear in the integral form both in the state equation and in the boundary condition. Some specific properties of the optimal control are discussed.

The purpose of this dissertation is to draw attention to a long neglected, yet very important issue in the statistical modeling of longitudinal data. The issue can arise in any analysis in which one variable, measured at a particular time, is modeled as a predictor or cause of another variable, measured at some later time. The problem is that the magnitude of the variable’s effect can vary with...

The analysis of spectral lag between energy bands, which combines temporal and spectral analyses, can add strict constraints to gamma-ray burst (GRB) models. In previous studies, the lag analysis focused on the lags between channel 1 (25-57 keV) and channel 3 (115-320 keV) from the Burst and Transient Source Experiment (BATSE). In this Letter, we analyzed the cross-correlation average lags (inc...

For SAR to perform correctly, the number of unique measurements obtained by the radar (i.e., the rank of the received signal’s covariance matrix) must be greater than the number of pixels illuminated. For a single aperture SAR, the coherent processing interval (CPI) and bandwidth determine the number of independent measurements collected; therefore, the received time-bandwidth product limits th...

Various optimization problems associated with the optimal control of distributed parabolic systems with time delays appearing in boundary conditions were studied recently by Wang (1975), Knowles (1978), Kowalewski (1988; 1990a;1990b; 1998; 1999; 2001), Kowalewski and Duda (1992) and Kowalewski and Krakowiak (2000). In (Wang, 1975), optimal control problems for parabolic systems with Neumann bou...