نتایج جستجو برای: disassembly and e

تعداد نتایج: 17334354  

2011
A. ElSayed

In this study, we propose an intelligent automated disassembly cell for online (real time) selective disassembly. The cell is composed of an industrial robotic manipulator, a camera, range-sensing and component segmentation visual algorithms. The cell prototype allows for robotic sensory-driven disassembly under uncertainty. An online genetic algorithm model for selective disassembly is also pr...

2014
M. L. Bentaha O. Battaïa A. Dolgui

This paper deals with the problem of disassembly line balancing where partial disassembly and uncertainty of task times are studied. Few papers have addressed the stochastic disassembly line balancing problem and most of existing work focused on complete disassembly and have not considered AND/OR graphs. In the present work, tasks of the best selected disassembly alternative are to be assigned ...

2012
Ahmed ElSayed Elif Kongar Surendra M. Gupta

This paper addresses the problem of creating intelligent, green, and financially-beneficial disassembly sequences for end-of-life (EOL) electronic products. These complex EOL products contain a broad spectrum of materials including precious metals. Therefore, one would have to process these products to retrieve the value buried in them. EOL processing options include, reuse, remanufacturing, re...

2010
Ahmed ElSayed Elif Kongar Surendra M. Gupta

End-of-life (EOL) processing options include reuse, remanufacturing, recycling and proper disposal. In almost all cases, a certain level of disassembly may be required due to possible changes in the original product structure. Thus, finding an optimal or near optimal disassembly sequence is crucial to increasing the efficiency of the process. Disassembly operations are labor intensive, can be c...

2000
Askiner Güngör Surendra M. Gupta Kishore Pochampally Sagar V. Kamarthi

Disassembly line is, perhaps, the most suitable way for the disassembly of large products or small products in large quantities. In this paper, we address the disassembly line balancing problem (DLBP) and the challenges that come with it. The objective of balancing the disassembly line is to utilize the disassembly line in an optimized fashion while meeting the demand for the parts retrieved fr...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2008
Stephanie K Williams David Truong Jessica K Tyler

Promoter chromatin disassembly is a widely used mechanism to regulate eukaryotic transcriptional induction. Delaying histone H3/H4 removal from the yeast PHO5 promoter also leads to delayed removal of histones H2A/H2B, suggesting a constant equilibrium of assembly and disassembly of H2A/H2B, whereas H3/H4 disassembly is the highly regulated step. Toward understanding how H3/H4 disassembly is re...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهرکرد - دانشکده ادبیات و علوم انسانی 1389

current studies in second language (l2) learning have revealed the positive role of corrective feedback (cf) in both oral and written forms in different language features. the present study was an attempt to investigate the effect of both direct and indirect written corrective feedback (wcf) on the use of grammatical collocations in l2 writing. the study also sought to examine whether the effec...

2014
Shwetank Avikal P. K. Mishra

The product recovery operations are fully based on disassembly line balancing. The disassembly line is a best chaise of automated disassembly or returned product. It is very difficult to find the optimal balance of a disassembly line because of its N-P hard nature. In this paper a new U-shaped heuristic is proposed to assign the parts to the disassembly work stations under precedence constraint...

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