This paper proposes new techniques for efficiently parallelizing sliding window processing over data streams on a shared-nothing cluster of commodity hardware. Data streams are first partitioned on the fly via a continuous split stage that takes the query semantics into account in a way that respects the natural chunking (windowing) of the stream by the query. The split does not scale well enou...

The Split algorithm is an essential building block for route-first cluster-second heuristics and modern genetic algorithms for vehicle routing problems. The recent survey of [Prins, Lacomme and Prodhon, Transport Res. C (40), 179–200] lists more than 70 articles that use this technique. Split is classically assimilated to the search for a shortest path in an acyclic directed graph and performed...

This research aims to develop and examine a measurement of customers’ experiences in the last-mile delivery process, which is critical step towards their satisfaction future intention order products from same retailer again. The CMX-LMD scale proposed as self-report tool whose psychometric properties where then examined. total sample N = 907 participants (63.4% females) was randomly split into ...

Harvesting of autografts results in donor site morbidities and is limited in scenarios such as large total body surface area burns. In these instances, coverage is increased by meshing grafts at the expense of delayed biologic closure. Moreover, graft meshing increases the likelihood of contraction and hypertrophic scarring, limits range of motion, and worsens cosmesis. Many tissue engineering ...

This paper aims to study the split load vehicle routing problem in order to find a solution which would decrease logistics’ cost by implementing simultaneous delivery and pickup which is part of the multi-attribute vehicle routing problem. A model was established based on certain preconditions and assumptions considering some specific characteristics in this simultaneous delivery and pickup pro...

Splitting loads such that the delivery of certain loads is completed in multiple trips rather than one trip has been shown to have benefit for both the classic Vehicle Routing Problem and the Pickup and Delivery Problem. However, the magnitude of the benefit may be affected by various problem characteristics. In this paper, we characterize those real world environments in which split loads are ...

This dissertation investigates the Vehicle Routing Problem with Split Deliveries and Time Windows. This problem assumes a depot of homogeneous vehicles and set of customers with deterministic demands requiring delivery. Split deliveries allow multiple visits to a customer and time windows restrict the time during which a delivery can be made. Several construction and local search heuristics are...

Title of dissertation: A STUDY OF FOUR NETWORK PROBLEMS IN TRANSPORTATION, TELECOMMUNICATIONS, AND SUPPLY CHAIN MANAGEMENT Si Chen, Doctor of Philosophy, 2007 Dissertation directed by: Professor Bruce Golden and Associate Professor Subramanian Raghavan Robert H. Smith School of Business The increasing material costs and the rapid advances in computing technology have both motivated and promoted...

background: cesarean delivery is a surgery for deliver a baby. women with previous cesarean delivery (cd) must often choose between a vaginal delivery (vd) and repeat cd. our aim of this study was to investigate factors associated with preference for cd in neyshabur pregnant women with previous cd. methods: a cross‑sectional study was conducted on all pregnant women (who had previous caesarean ...

background: nowadays, there has been a growing trend of caesarean sections in iran. one reason would be the mother’s desire. increased maternal self‑efficacy can be an important step to reduce percentage of cesarean. this study aimed to determine the effectiveness of training‑based strategies to increase the self‑efficacy for choosing delivery method among pregnant women in shahrekord city. met...