This paper presents GTD-POP, a planning methodology based on the Generate, Test and Debug paradigm. GTD-POP's goal is to achieve a compromise between planning eeciency and soundness by using associ-ational knowledge to guide its search for interaction checks in a partially-ordered plan. This paper describes the GTD-POP and discusses issues involved in evaluating the behavior of practical planners.

Online communities depend upon the commitment and voluntary participation of their members. Community design—site navigation, community structure and features, and organizational policies—is critical in this regard. Community design affects how people can interact, the information they receive about one another and the community, and how they can participate in community activities. We argue th...

The divergent part of the one-loop off-shell effective action is computed for a single scalar field coupled to the Ricci curvature of 2D gravity (cφR), and self interacting by an arbitrary potential term V (φ). The Vilkovisky-DeWitt effective action is used to compute gauge-fixing independent results. In our background field/covariant gauge we find that the Liouville theory is finite on shell. ...

This paper offers a critique of manufacturing performance measurement approaches investigated by previous studies particularly in trade-off modelling studies for manufacturing capabilities. We argue that some studies complete validity analyses of the trade-off model using measures of manufacturing performance that are inconsistent with the trade-off theoretical concept. The paper also seeks to ...

We derive the off-shell scattering matrix for a spherical scatterer. The result obtained generalizes the off-on-shell matrix commonly used in the theory of scalar waves propagation in random media.

Unified growth theory predicts that the timing of the fertility transition is a key determinant of contemporary comparative development, as it marks the onset of the take-off to sustained growth. Neoclassical growth theory presupposes a take-off, and explains comparative development by variations in (subsequent) investment rates. The present analysis integrates these two perspectives empiricall...

In this paper we develop a coherent control theory of the off resonance refractive index of a medium with a Gaussian pulse of coherent light. The refractive index of gaseous N i is studied by using this theory. It is found that the off resonance refractive index of gaseous N2 can be enhanced through the coherent control approach by changing the coherent parameters or the pulse duration of the c...

We give an overview of the generalized Calderón-Zygmund theory for “non-integral” singular operators, that is, operators without kernels bounds but appropriate off-diagonal estimates. This theory is powerful enough to obtain weighted estimates for such operators and their commutators with BMO functions. L − L off-diagonal estimates when p ≤ q play an important role and we present them. They are...

We give an overview of the generalized Calderón-Zygmund theory for “non-integral” singular operators, that is, operators without kernels bounds but appropriate off-diagonal estimates. This theory is powerful enough to obtain weighted estimates for such operators and their commutators with BMO functions. L − L off-diagonal estimates when p ≤ q play an important role and we present them. They are...