integrated urban management means adopting a holistic approach to urban management and designing appropriate mechanisms for this approach’s requirements in practice. the integration of the urban activities brings together organizational , structural and institutional activities and action in which the urban development is supported. in order to achieve integration, it is essential to identify f...

Rep. George Brown (D-CA), chair of the House Committee on Science, Space and Technology, who narrowly won a race many expected him to lose, most likely will continue to chair the science committee. For many years he has been considered one of the most knowledgeable members of the House on science policy. His calls for priority setting, increased accountability and demonstrated social benefit fr...

Service is provided to a set of parallel queues by a single server. The service of queue i may be initiated only at certain time instances ft i n g 1 n=1 that constitute the connectivity instances for queue i. The service of diierent customers cannot overlap. Scheduling is required to resolve potential contention of services initiated at closely spaced, closer than the service time, connectivit...

Keywords: Assemble-to-order (ATO) Inventory Stochastic program Optimal policy Multi-dimensional newsvendor model a b s t r a c t In this paper we introduce a multi-stage stochastic program that provides a lower bound on the long-run average inventory cost of a general class of assemble-to-order (ATO) inventory systems. The stochastic program also motivates a replenishment policy for these syste...

INTRODUCTION The authors' center recently changed their pretransfusion testing protocol from "conventional" type and screen (TS) with anti-human globulin (AHG) crossmatch (Policy A) to TS with immediate-spin (IS) crossmatch (Policy B). Red blood cell (RBC) units were issued after compatible IS crossmatch as and when required instead of AHG crossmatch. This study was conducted to compare the eff...

Dynamic Programming is used to derive the optimal feedback solution to the minimization of a quadratic welfare loss-functional subject to a linear econometric model, when the value of some instrument variables can not be optimized in every model period, but only in single ones. In this way, the relative inertia of fiscal policy-making, as compared to monetary policymaking, can e.g. be taken int...

On supervisory policies that enforce liveness in completely controlled petri nets with directed cut-places and cut-transitions. On supervisory policies that enforce liveness in in a class of completely controlled petri nets obtained via reenement. Starting from the observation that the set of initial markings (N) for which there is a supervisory policy that enforces liveness in a partially cont...

Notation Connection with Abstract DPMapping of a stationary policy μ: For any control function μ, with μ(x) ∈ U(x) forall x , and J ∈ E(X ) define the mapping Tμ : E(X ) 7→ E(X ) by(TμJ)(x) = E{g(x , μ(x),w) + αJ(f (x , μ(x),w))}, x ∈ XValue Iteration mapping: For any J ∈ E(X ) define the mapping T : E(X ) 7→ E(X )(TJ)(x) = infu∈U(x)E{...

We propose an extended maintenance overtime policy for the cumulative damage model where an operating unit suffers some damage due to shocks. It is assumed that the total damage is additive, and the unit fails when the total damage has exceeded a prespecified damage level. It is supposed that we start to observe occurrence of shocks after time T, and the unit is replaced at Nth (N = 1, 2, ...) ...

The main goal of this study was to obtain insight about the factors that influence students' ability to learn during a field trip, in order to improve the planning and execution of learning field trips. The study was conducted in the context of a 1-day geological field trip for high school students in Israel. Three domains were tested by observations and questionnaires: (1) the nature of the le...