期刊文献+
共找到6篇文章
< 1 >
每页显示 20 50 100
Research on the Agriculture Production Structure in Shandong Province Based on the Grey Relational Dynamic Analysis 被引量:1
1
作者 侯修升 张娥娥 《Agricultural Science & Technology》 CAS 2016年第7期1753-1756,共4页
In accordance with grey relational dynamic analysis, overall structure and inner structure of agriculture were analyzed and the grey relational sequence inte- grals were concluded of Shandong agriculture during 2003-2... In accordance with grey relational dynamic analysis, overall structure and inner structure of agriculture were analyzed and the grey relational sequence inte- grals were concluded of Shandong agriculture during 2003-2014. Besides, the re- search analyzed the contributions by specific agricultural sectors and Shandong a- gricultural structure from natural endowments, policy, and agricultural modernization. Finally, the development countermeasures and suggestions were proposed. 展开更多
关键词 grey dynamic analysis Agricultural industry structure OPTIMIZATION
下载PDF
Dynamic grey model of verification cycle and lifecycle of measuring instrument and its application 被引量:4
2
作者 苏海涛 杨世元 +1 位作者 董华 沈毛虎 《Journal of Central South University》 SCIE EI CAS 2005年第S2期86-89,共4页
Two dynamic grey models DGM (1, 1) for the verification cycle and the lifecycle of measuring instrument based on time sequence and frequency sequence were set up, according to the statistical feature of examination da... Two dynamic grey models DGM (1, 1) for the verification cycle and the lifecycle of measuring instrument based on time sequence and frequency sequence were set up, according to the statistical feature of examination data and weighting method. By a specific case, i.e. vernier caliper, it is proved that the fit precision and forecast precision of the models are much higher, the cycles are obviously different under different working conditions, and the forecast result of the frequency sequence model is better than that of the time sequence model. Combining dynamic grey model and auto-manufacturing case the controlling and information subsystems of verification cycle and the lifecycle based on information integration, multi-sensor controlling and management controlling were given. The models can be used in production process to help enterprise reduce error, cost and flaw. 展开更多
关键词 measuring equipment verification cycle LIFECYCLE dynamic grey model qualification rate information system
下载PDF
A grey dynamic model for the evaluation of regional sustainable development and its empirical study 被引量:1
3
作者 Jiang Minghui Chen Wei 《Ecological Economy》 2007年第4期443-455,共13页
Currently, traditional development issues, such as economic stagnation, as well as new challenges like environmental degradation and globalization, need attention. Sustainable development, including economic, environm... Currently, traditional development issues, such as economic stagnation, as well as new challenges like environmental degradation and globalization, need attention. Sustainable development, including economic, environmental, and social elements, is a main goal of decision-makers. The key to sustainable decision-making is to evaluate and forecast the status quo of sustainable development. Policy makers need a tool based on scientific information to forecast the effects of future actions on sustainability and make policies for sustainable development. This paper analyzes the relation of the economy, environment and social welfare by the grey dynamic model. The proposed method uses time series and basic indicators of ecological system, including economic, environmental and social sub-systems. It is applied to Heilongjiang Province and Jiangsu Province. The results have proved different status quo of sustainable development in these two regions, and suggestions are proposed, such as optimization of industrial structure and eco-industrial development. The conclusion is that there is no unique sustainable path, and accordingly, policy makers should choose different criteria and strategies to make efficient sustainable decisions for each region. 展开更多
关键词 Sustainable development Indicators of ecological system grey dynamic evaluation
下载PDF
AXIAL HEAT CONDUCTION MODEL TO PREDICT MAXIMUM HEAT REMOVE OF MINIATURE HEAT PIPE BASED ON GREY MODEL THEORY 被引量:3
4
作者 Tsai Mengchang Chang Shinhsing Kang Shungwen 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2005年第4期477-481,共5页
Computer chip is always accompanied by the increase of heat dissipation and miniaturization. The miniature heat pipes are widely used in notebook computer to resolve the heat dissipation problems. Maximum heat removed... Computer chip is always accompanied by the increase of heat dissipation and miniaturization. The miniature heat pipes are widely used in notebook computer to resolve the heat dissipation problems. Maximum heat removed model of miniature heat pipes building by grey model is presented. In order to know the foundation for modeling, the smooth grade of error examination is inquired and the accuracy of grey relational grade is verified. The model can be used to select a suitable heat pipes to solve electric heat problems in the future. Final results show that the grey model only needs four experiment data and its error value is less than 10%, further, it is better than computational fluid dynamics (CFD) model. 展开更多
关键词 Maximum heat removed model Miniature heat pipe grey model theory Computational fluid dynamics (CFD) grey relational grade
下载PDF
Improved dynamic grey wolf optimizer 被引量:6
5
作者 Xiaoqing ZHANG Yuye ZHANG Zhengfeng MING 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2021年第6期877-890,共14页
In the standard grey wolf optimizer(GWO), the search wolf must wait to update its current position until the comparison between the other search wolves and the three leader wolves is completed. During this waiting per... In the standard grey wolf optimizer(GWO), the search wolf must wait to update its current position until the comparison between the other search wolves and the three leader wolves is completed. During this waiting period, the standard GWO is seen as the static GWO. To get rid of this waiting period, two dynamic GWO algorithms are proposed: the first dynamic grey wolf optimizer(DGWO1) and the second dynamic grey wolf optimizer(DGWO2). In the dynamic GWO algorithms, the current search wolf does not need to wait for the comparisons between all other search wolves and the leading wolves, and its position can be updated after completing the comparison between itself or the previous search wolf and the leading wolves. The position of the search wolf is promptly updated in the dynamic GWO algorithms, which increases the iterative convergence rate. Based on the structure of the dynamic GWOs, the performance of the other improved GWOs is examined, verifying that for the same improved algorithm, the one based on dynamic GWO has better performance than that based on static GWO in most instances. 展开更多
关键词 Swarm intelligence grey wolf optimizer dynamic grey wolf optimizer Optimization experiment
原文传递
Grey Dynamic Model,Forecasting & Comparison on the Development Trend in Track & Field Sports of Asia & the World
6
《Systems Science and Systems Engineering》 CSCD 1993年第2期97-110,共14页
By establishing grey dynamic model and adopting its method, this essay makes forecast and comparison on the developing trend in track and field sports of Asia and the world. To higher the model’s precise, some sequen... By establishing grey dynamic model and adopting its method, this essay makes forecast and comparison on the developing trend in track and field sports of Asia and the world. To higher the model’s precise, some sequential data are processed by slide mean value, a Maclourin Exponsion is made to some exponents of less adaptable response function and acceptance or rejection is made according to the fitting mode of the number series and their development. In the quatitative analysis, the first locus of the developing coefficient of the model in the sports field is the main basis. The analysis indicates that women’s and men’s field sports in Asia are developing respectively much faster, a little faster than that of the world, but men’s track sports in Asia are progressing paralled to that of the world, and women’s track in Asia remains behind. 展开更多
关键词 grey differential equation grey dynamic model sport-science Olympic mean coefficient (OMC) Asian Games.
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部