Environment quality in China: influential factors analysis based on grey relation theory

2013 ◽  
Author(s):  
Tao Aixiang
Keyword(s):  
Influential Factors ◽  
Relation Theory ◽  
Environment Quality ◽  
Factors Analysis ◽  
Grey Relation

Integrating DANP and modified grey relation theory for the selection of an outsourcing provider

2013 ◽  
Vol 40 (6) ◽  
pp. 2297-2304 ◽  
Author(s):  
Chao-Che Hsu ◽  
James J.H. Liou ◽  
Yen-Ching Chuang
Keyword(s):  
Relation Theory ◽  
Grey Relation ◽  
Selection Of

Application of Ant Colony Algorithm and Grey Relation Theory in Selecting Cooperative Manufacturing Partner

2006 ◽  
Vol 532-533 ◽  
pp. 1104-1107
Author(s):  
Ya Dong Fang ◽  
Wei Ping He ◽  
Lai Hong Du ◽  
Jin Liang Chen ◽  
Feng Zhao ◽  
...  
Keyword(s):  
Ant Colony Algorithm ◽  
Partner Selection ◽  
Transportation Cost ◽  
Ant Colony ◽  
Selection Problem ◽  
Relation Theory ◽  
Cooperative Enterprise ◽  
Grey Relation Coefficient ◽  
Working Procedure ◽  
Grey Relation

According to requirement of cooperative manufacturing partner selection based on networked manufacturing environment, the paper resolves cooperative manufacturing partner selection problem by ant colony algorithm and grey relation theory: Firstly, manufacturing task is divided into series of working procedure in time order by technologic planning. Secondly, considerable candidate enterprises are selected in terms of multi-hierarchy grey relation coefficient at each working procedure node to reduce the size of problem. Lastly, cooperative enterprise selecting path is decided by making use of ant colony algorithm in light of transportation cost.

Application of a Discrete Transfer Matrix Method in Analysis of Acoustic Attenuation Performance of Complex Perforated Pipe Mufflers

2013 ◽  
Vol 419 ◽  
pp. 140-144
Author(s):  
Huo Rui ◽  
Meng Bei ◽  
Zhang Lei
Keyword(s):  
Transfer Matrix ◽  
Transmission Loss ◽  
Influential Factors ◽  
Calculation Formula ◽  
Acoustic Attenuation ◽  
Noise Elimination ◽  
Discrete Method ◽  
Factors Analysis ◽  
Perforated Pipe ◽  
Perforated Tube

The article is about an application of a discrete method for analyzing acoustic attenuation performance of perforated tube mufflers. Acoustic transfer matrix of a tiny perforated tube section which contains one single hole is deduced based on basic hydromechanics equations. Then the work is developed into a general formula for resolving sound transmission loss of one perforated silencer unit consisting of multiple parallel perforated pipes. Result of the calculation formula is compared with that of acoustic finite element method. One more example is presented on influential factors analysis for noise elimination performance of a practical complex perforation muffler.

Assessing the Risk Relative to Indoor Environment Quality in Education Buildings

2013 ◽  
Vol 649 ◽  
pp. 81-84
Author(s):  
Mihai Eugen P. Codreanu ◽  
Tania Hapurne ◽  
Irina Baran ◽  
Irina Bliuc
Keyword(s):  
Risk Assessment ◽  
Indoor Environment ◽  
Indoor Environmental Quality ◽  
Assessment Methodology ◽  
Environment Quality ◽  
Integrated Risk Assessment ◽  
Factors Analysis ◽  
Indoor Environment Quality ◽  
Quality In Education ◽  
Risk Assessment Methodology

The study involves the risk factors analysis for indoor environment quality in education buildings with high occupancy, in terms of the occupants’ vulnerability, but also in terms of the effects of environmental factors on the constructive elements. Integrated risk assessment methodology for environment quality has to establish clear assessment methods, verification and validation of models, identifying factors that influence the environment quality and the possibility of improving their effects. This paper presents the application results of risk assessment methodology concerning the health and intellectual performance of occupants caused by indoor environmental quality for an education building. Are taken into account the results obtained from systematic measurements, over a specified period, of higrothermal parameters and of CO2 content in atmosphere, in a classroom. The analysis conclusions allow some recommending solutions for the risk reduction through constructive measures and improvement of way it is used.

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