Computational grids provide mechanisms for sharing and accessing large and heterogeneous collections of remote resources such as computers, online instruments, storage space, data, and applications. Resources are requested (”discovered”) by specifying a set of desired attributes. Resource attributes have various degrees of dynamism, from mostly static attributes, such as operating system versio...

Two adaptive non-contiguous allocation strategies for 2D-mesh multicomputers are proposed in this paper. The first is first-fit-based and the second is best-fit-based. That is; for a given request, the proposed first-fit-based approach tries to find a free submesh using the well-known first-fit strategy, if it fails, the request at hand is partitioned into two sub-requests that are independentl...

This work studies a variant of the online generalized assignmen t problem , where there are m P 2 heterogeneous servers to process n requests which arrive one by one over time. Each request mu st either be assigned to one of the servers or be rejected upon its arrival, before knowing any information of future requests. There is a corresponding weight (or revenue) for assigning each request to a...

We present a prioritized, limited multi-server processor sharing (PS) system where each server has various capacities, and N (≥2) priority classes are allowed in each PS server. In each prioritized, limited server, different service ratio is assigned to each class request, and the number of requests to be processed is limited to less than a certain number. Routing strategies of such prioritized...

This study was a cross-sectional investigation into the request strategies used by Iranian learners of English as a Foreign Language and Australian native speakers of English. The sample involved 96 BA and MA Persian students and 10 native speakers of English. A Discourse Completion Test (DCT) was used to generate data related to the request strategies used by each group. Selection of request s...

We show the existence and effective computability of optimal winning strategies for request-response games in case the quality of a play is measured by the limit superior of the mean accumulated waiting times between requests and their responses.

We show the existence and effective computability of optimal winning strategies for request-response games in case the quality of a play is measured by the limit superior of the mean accumulated waiting times between requests and their responses.

objective: this study assessed the influence of maternal request on elective cesarean rate and related factors in maternity hospitals in tehran. materials and method: this cross sectional descriptive analytic study was performed via a two-step random sampling technique, using data from 824 pregnant women who attended the maternity hospitals in tehran in 2001. a questionnaire covering past and p...

originating from vygotsky’s sociocultural theory, dynamic assessment (da) proposes a novel approach to second language acquisition (sla) research according to which a dialectical relationship is envisaged between instruction and assessment. although da has been applied to some areas of sla, there are areas, such as interlanguage pragmatics (ilp), that have been neglected.  to address the issue,...