Comprehensive evaluation of agricultural water-saving potential in the middle reaches of Hei River using genetic projection pursuit model

2014 ◽  
Vol 22 (1) ◽  
pp. 104-110 ◽  
Author(s):  
Xining ZHAO ◽  
Yubao WANG ◽  
Xueming MA
Keyword(s):  
Comprehensive Evaluation ◽  
Projection Pursuit ◽  
Water Saving ◽  
Agricultural Water ◽  
Projection Pursuit Model

Comprehensive Evaluation of Sludge Treatment Schemes Based on Projection Pursuit Model

2014 ◽  
Vol 889-890 ◽  
pp. 1604-1608
Author(s):  
Gong Gao
Keyword(s):  
Comprehensive Evaluation ◽  
Projection Pursuit ◽  
Urban Rivers ◽  
Sludge Treatment ◽  
Evaluation Indexes ◽  
The Public ◽  
New Ideas ◽  
Projection Pursuit Model ◽  
Government Benefits ◽  
Selection Of

To explore new ideas for treating sludge in the urban rivers, 4 different sludge treatment schemes were proposed, the construction safety, projection duration, enthusiasm of the public, environmental coordination, resource utilization, supporting of government, benefits, and project cost of the schemes were selected as the main evaluation indexes, and the projection pursuit model was introduced to evaluate the schemes comprehensively. Results showed that: the evaluation and selection of sludge treatment schemes conformed to the calculation requirements of the projection pursuit model; S3 was the optimal sludge treatment scheme with best comprehensive benefits, the projection value of which was recorded as 1.198, much more than that of other treatments. Therefore, it was concluded that using sludge to produce brick (S3) was more appropriate for the sludge treatment in urban rivers, and which depended on the wide market of bricks and had good practical benefits. The study achievements could provide beneficial basis for the river management and the sludge treatment in cities, and also provide the practical basis for the application of statistical models on the selection of project schemes.

Comprehensive evaluation of agricultural water-saving technology based on AHP and Rough Set method

2012 ◽  
Vol 32 (3) ◽  
pp. 931-941 ◽  
Author(s):  
翟治芬 ZHAI Zhifen ◽  
王兰英 WANG Lanying ◽  
孙敏章 SUN Minzhang ◽  
严昌荣 YAN Changrong ◽  
梁瑜珊 LIANG Yushan
Keyword(s):  
Rough Set ◽  
Comprehensive Evaluation ◽  
Water Saving ◽  
Agricultural Water

scholarly journals Competitiveness Evaluation of Chinese Dairy Industry Based on Accelerated Genetic Algorithm Projection Pursuit Model

2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Chen Hongli ◽  
Wu Yanyan ◽  
Liu Xiuli ◽  
Zhang Wenju
Keyword(s):  
Genetic Algorithm ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Dairy Industry ◽  
Projection Pursuit ◽  
Development Trend ◽  
Northern Region ◽  
Positive Trend ◽  
Five Dimensions ◽  
Projection Pursuit Model

Scientific evaluation of the competitiveness of China’s dairy industry is of great significance to the development of regional dairy industry. In view of the fact that the existing evaluation model cannot solve the dynamic nonlinear optimization problem, this paper established a projection pursuit model based on accelerating genetic algorithm and carried on the comprehensive evaluation and dynamic analysis on the competitiveness of dairy industry in China’s 31 provinces and cities (not including Hong Kong, Macao, and Taiwan) from five dimensions, namely, basic factors of production, the industry demand conditions, the enterprise competitiveness and growth force, related and supporting industries, and the natural environmental elements. It was found that firstly, from the perspective of time, the development trend of China’s dairy industry basically shows a positive trend. With the improvement of national living standards, the competitiveness of the dairy industry is also constantly improved. Secondly, from the perspective of space, regional differences in the competitiveness of the dairy industry are significant. Inner Mongolia, Heilongjiang, Shandong, and Hebei are at the forefront of the development of the industry, while the development of the dairy industry in the rest of the region has a big gap with those areas. From the perspective of regional layout, the advantageous region of China’s dairy industry has been preliminarily formed, and the competitive advantage is mainly concentrated in the northern region. Accordingly, the countermeasures and suggestions to enhance the competitiveness of China’s dairy industry were put forward.

Comprehensive Evaluation of Drill Wear Based on the Model of Projection Pursuit

2014 ◽  
Vol 602-605 ◽  
pp. 272-276
Author(s):  
Li Li Zhao ◽  
Yu Cai Dong ◽  
Lu Liu ◽  
Guan Yu Kou ◽  
Min Lin ◽  
...  
Keyword(s):  
Optimization Problems ◽  
Comprehensive Evaluation ◽  
Projection Pursuit ◽  
Weight Coefficient ◽  
Good Effect ◽  
Projection Data ◽  
Projection Direction ◽  
Optimal Projection ◽  
Projection Pursuit Model ◽  
Wear Evaluation

To overcome the deviation caused by the effect of subjective factors in drill wear evaluation, and make the evaluation more accurate and objective, on the basis of drill wear comprehensive evaluation criterion, the projection data are built with projection pursuit method. Two hundred drill wear comprehensive evaluation samples are randomly generated within the range of each class. The projection pursuit model is built by unitary processing according to these samples, which converts the evaluation into non-linear multi-constrained optimization problems. The optimal projection direction vector and the weight coefficient of each evaluation index are obtained with composite simplex method. Meanwhile the corresponding relationship between the region of variation of projection eigenvalue and classification grade is established. The precision of sample evaluation reaches 100% and the evaluation of the measured data achieves good effect. Thus, the scientific evaluation of drill wear is realized by the projection pursuit model.

Synthetic Evaluation of Warfare Capability of Submarine Launched Torpedoes Based on Projection Pursuit Model

2012 ◽  
Vol 490-495 ◽  
pp. 2956-2960
Author(s):  
Ling Zhang ◽  
Pu Kai Wang ◽  
Yu Cai Dong ◽  
Min Lin ◽  
Liang Hai Yi ◽  
...  
Keyword(s):  
Comprehensive Evaluation ◽  
Projection Pursuit ◽  
One Dimensional ◽  
Evaluation Indicator ◽  
Projection Direction ◽  
Projection Pursuit Model ◽  
Evaluation Order ◽  
Synthetic Evaluation

Projection Pursuit method invert a number of evaluating indicator into a one-dimensional projection values by the best projection direction, to avoid anthropogenic interference with the expert scoring factors. Application of projection pursuit method for three models of the submarine launched torpedoes capability to conduct a comprehensive evaluation, the best projection direction of the evaluation indicator is got, and a synthetic comprehensive evaluation order of the models is obtained. These supply scientific budget for the operational use , improvements and development of torpedoes.

scholarly journals Mulching as water-saving technique in dryland agriculture: review article

2019 ◽  
Vol 43 (1) ◽  
Author(s):  
Mohammad Abdul Kader ◽  
Ashutus Singha ◽  
Mili Amena Begum ◽  
Arif Jewel ◽  
Ferdous Hossain Khan ◽  
...  
Keyword(s):  
Arid Regions ◽  
Review Article ◽  
Water Saving ◽  
Future Research ◽  
Agricultural Water ◽  
Plastic Mulch ◽  
Dryland Agriculture ◽  
Crop Cultivation ◽  
Agricultural Water Resources ◽  
Semi Arid

Abstract Agricultural water resources have been limited over the years due to global warming and irregular rainfall in the arid and semi-arid regions. To mitigate the water stress in agriculture, mulching has a crucial impact as a water-saving technique in rain-fed crop cultivation. It is important mainly for preserving soil moisture, relegating soil temperature, and limiting soil evaporation, which affects the crop yield. Mulching has many strategic effects on soil ecosystem, crop growth, and climate. Mulch insulates the soil, helping to provide a buffer from cold and hot temperatures that have a crucial activity in creating beautiful and protected landscapes. This study has accumulated a series of information about both organic and plastic mulch materials and its applicability on crop cultivation. Moreover, future research potentials of mulching with modeling were discussed to quantify water loss in agriculture.

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