Cell formation (CF) problem is one of the most important decision problems in designing a cellular manufacturing system includes grouping machines into machine cells and parts into part families. Several factors should be considered in a cell formation problem. In this work, robust optimization of a mathematical model of a dynamic cell formation problem integrating CF, production planning and w...

Distributed machine learning has gained much attention due to recent proliferation of large scale learning problems. Designing a high-performance framework poses many challenges and opportunities for system engineers. This paper presents a novel architecture for solving distributed learning problems in framework of data parallelism where model replicas are trained over multiple worker nodes. Wo...

abstract background: workplace exposures as in clinical work can cause disorders. some organ systems are at risk. this work may be a risk factor for early symptoms of menopause. the objective of this study was to compare the early symptoms of menopause between hospital personnel who work in clinical and office settings. materials and methods: this was a historical cohort study conducted on clin...

This paper describes the application of machine vision technology to prevention of collision accidents with heavy equipment such as hydraulic excavators and cranes. The images of the back side of heavy equipment with cameras which can take a picture with 180 degree shooting angle were captured and the worker was detected by developed color image processing algorism. A laser range finder and an ...

Industries are the biggest workplace all over the world, also there are large number of peoples involves as a worker and most of them are work as a machine operator. There are many systems developed for industrial work place, some of them, monitors machine processes and some do monitoring and control of machine parameters. Such as speed, temperature, production batch count etc. However there is...

This paper explores the behavior of a model economy with search frictions and bilateral asymmetric information. Firms commit to employment contracts in an effort to attract workers. When a worker and firm meet, the worker must decide whether to supply effort to the employment relationship, thereby affecting the distribution of a match-specific productivity shock. Only the worker observes her ef...

We propose communication-efficient distributed estimation and inference methods for the transelliptical graphical model, a semiparametric extension of the elliptical distribution in the high dimensional regime. In detail, the proposed method distributes the d-dimensional data of size N generated from a transelliptical graphical model into m worker machines, and estimates the latent precision ma...

DNA information of organisms makes well-made biomachines such as animal body, bee society (= bee super-organism), and intracellular genetic apparatus, which seem to have most plausibly emerged by hierarchical kin sociogenesis of lower-level individuals (which are unicell animals, bee individuals, and tRNA ribo-organisms, respectively) [1]. Both bee super-organism and animal body are considered ...