Due to multiple-factors, bracketed popularly in ‘push-pull’ category, migration, both internal and external, is taking place in Bangladesh. In Bangladesh, the dominant form of migration is from rural to urban centers. For, Bangladesh is predominantly an agrian rural society for 80.0 percent of the total population lives in 87319 villages. The urban centers of Bangladesh are developing rapidly a...

We prove that two pushing-blocks puzzles are intractable in 2D. One of our constructions improves an earlier result that established intractability in 3D [OS99] for a puzzle inspired by the game PushPush. The second construction answers a question we raised in [DDO00] for a variant we call Push-1. Both puzzles consist of unit square blocks on an integer lattice; all blocks are movable. An agent...

Am ajor problem ofe-commerce is the high rate of customer initiated abortions of processes. It may be solved by the implementation of a Push System that supports the webshop. One major module of the Push System is the Pushflow Manager that proactively l eads customers through their processes by taking over tasks or triggering following activities. Its theoretical background, the Push Concepts, ...

School bullying is a serious problem among teenagers, causing depression, dropping out of school, or even suicide. It is thus important to develop antibullyingmethods.This paper proposes a physical bullying detectionmethod based on activity recognition. The architecture of the physical violence detection system is described, and a Fuzzy Multithreshold classifier is developed to detect physical ...

Product development can be motivated by “demand pull” from user needs or by “technology push” from research. Historically, new aviation weather forecasts have been motivated by “technology push” considerations, in which better scientific validation results were the principal criterion for the forecast “goodness”. For example, one might demonstrate that the forecast had a higher probability of d...

In this paper we experimentally investigate how the allocation of inventory risk in a two-stage supply chain affects channel efficiency. We first evaluate two common wholesale price contracts that differ in which party incurs the risk associated with unsold inventory; a push contract in which the retailer incurs the risk, and a pull contract in which the supplier incurs the risk. Our experiment...

Despite high coverage of indoor interventions like Background insecticide-treated nets, mosquito-borne infections persist, partly because of outdoor-biting, early-biting and insecticide-resistant vectors. Push-pull systems, where mosquitoes are repelled from humans and attracted to nearby lethal targets, may constitute effective complementary interventions. : A partially randomized cross-over d...

Naturally occurring radon in ground water can potentially be used as an in situ partitioning tracer to characterize dense nonaqueous phase liquid (DNAPL) saturations. The static method involves comparing radon concentrations in water samples from DNAPL-contaminated and noncontaminated portions of an aquifer, while the push-pull method involves the injection (push) and extraction (pull) of a rad...

Pull requests form a new method for collaborating in distributed software development. To study the pull request distributed development model, we constructed a dataset of almost 900 projects and 350,000 pull requests, including some of the largest users of pull requests on Github. In this paper, we describe how the project selection was done, we analyze the selected features and present a mach...