scholarly journals Evaluation and Dynamic Mechanism of Ecological Space in a Densely Urbanized Region During a Rapidly Growing Period—A Case Study of the Wu-E-Huang-Huang Metropolitan Interlocking Region

2019 ◽  
Vol 12 (1) ◽  
pp. 73
Author(s):  
Zhiyong Wang ◽  
Tixing Yang ◽  
Helin Liu ◽  
Man Yuan ◽  
Ji Luo ◽  
...  
Keyword(s):  
Evaluation Method ◽  
Road Traffic ◽  
Comprehensive Evaluation ◽  
Ecological Factors ◽  
Growing Period ◽  
Sensitive Areas ◽  
Landscape Value ◽  
Factor Evaluation ◽  
Four Levels ◽  
Urbanized Region

Ecological space in a densely urbanized region plays a very important role in its development. Therefore, a scientific evaluation of ecological spaces in a densely urbanized region is the main prerequisite for corresponding ecological space planning. Taking the Wu-E-Huang-Huang Metropolitan Interlocking Region as the study area, the paper selects six types of ecological factors, including the location index, land status, terrain conditions (elevation, slope), hydrological conditions (rivers, lakes), landscape value, and road traffic. By using a single factor evaluation and a multi-factor comprehensive evaluation method involving GIS, the paper presents an evaluation of the ecological space conditions of the Wu-E-Huang-Huang Metropolitan Interlocking Region. In line with the result, the ecological environment of the region is divided into four levels: highly sensitive areas, sensitive areas, weakly sensitive areas and insensitive areas. On this basis, the underlying problems and mechanisms are explored further.

The Research of Design Method on Green Modular that Oriented Construction Machinery

2014 ◽  
Vol 1049-1050 ◽  
pp. 828-832
Author(s):  
J.R. Yang
Keyword(s):  
Evaluation Method ◽  
Modular Design ◽  
Comprehensive Evaluation ◽  
Design Method ◽  
Fuzzy Comprehensive Evaluation ◽  
Element Analysis ◽  
Construction Machinery ◽  
Comprehensive Evaluation Method ◽  
The Finite Element Analysis ◽  
Factor Evaluation

The aim of this study was to obtain the method of the green design and modular design that oriented construction machinery products. A variety of modern design tools such as the finite element analysis software package and optimize design package and a two-factor evaluation fuzzy modelare used to analyze and Evaluation the green degree and the module degree of the construction machinery. Some modern mathematical tools such as AHP and fuzzy comprehensive evaluation method are used to calculate and evaluate the green degree and the module degree in construction machinery design. The proposed design method can meet the requirements of the green degree and the module degree of the construction machinery.

scholarly journals Analysis of the water quality condition of the Zijiang River in summer and the applicability of evaluation methods

2021 ◽  
Vol 237 ◽  
pp. 01027
Author(s):  
Tao Zhang ◽  
Peng Xiang ◽  
Shijiang Zhu ◽  
Yang Liu ◽  
Wen Xu ◽  
...  
Keyword(s):  
Water Quality ◽  
River Water ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Nutrient Status ◽  
River Water Quality ◽  
Single Factor ◽  
Index Method ◽  
Factor Evaluation ◽  
Status Index

The single-factor evaluation method, improved Nemerow index method, fuzzy mathematical synthesis evaluation method and comprehensive nutrient status index method were used to evaluate the water quality of the Zijiang River in summer, and to analyze the applicability of the evaluation methods. The results show that: (1) The Zijiang River is heavily polluted with nitrogen and TN is the main pollutant in the summer. The overall nutrient status index is 34.33, which is not eutrophic. (2) The single-factor evaluation method is simple and suitable for rapid identification of excessive pollutants, but cannot reflect the water quality. the Nemerow index method takes into account the weight of each evaluation factor in the river water quality, and is suitable for making a comprehensive evaluation of the river water quality, but has a certain degree of subjectivity when classifying the water quality. The fuzzy comprehensive evaluation method is suitable for reflecting the influence of different evaluation factors on water quality by calculating the weight and membership degree of each evaluation factor, but the calculation is complicated.The Integrated Nutrient Status Index method is suitable for determining whether eutrophication is occurring in a water body and cannot determine the water quality category.

scholarly journals The Effect of Different Lane Occupancy on Road Traffic Capacity

2018 ◽  
Vol 7 (2) ◽  
pp. 54
Author(s):  
Qiao-Xu Qin ◽  
Yuan-Biao Zhang
Keyword(s):  
Change Process ◽  
Evaluation Method ◽  
Road Traffic ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Road Capacity ◽  
Traffic Capacity ◽  
Mathematical Relation

In this paper, the data of video is extracted and processed, and the change process of road capacity during the accident is described by using the fuzzy comprehensive evaluation method. By means of cellular automata, the change of road capacity when different lanes are blocked is simulated, and the influence of different lanes on road capacity is analyzed. Then the formula of vehicle queue length based on mathematical relation is established.

Comprehensive Evaluation on Sensitivity of Ecological Environment in Chengde

2012 ◽  
Vol 518-523 ◽  
pp. 1252-1263
Author(s):  
Chun Li ◽  
Jin Ping Qian
Keyword(s):  
Comprehensive Evaluation ◽  
Water Environment ◽  
Ecological Environment ◽  
General Area ◽  
Sensitive Area ◽  
Environment Pollution ◽  
Single Factor ◽  
Evaluation Result ◽  
Factor Evaluation ◽  
Four Levels

This paper adopts the multi-factor comprehensive evaluation to conduct spatial superposition calculation of the classified index of single-factor evaluation result through evaluating soil erosion sensitivity, land desertification sensitivity, susceptibility to stress of water resource and water environment pollution sensitivity, etc, thus getting the result of comprehensive evaluation of ecological environment sensitivity in Chengde. Chengde’s ecological environment has four levels which are extremely sensitive area, medium sensitive area, slightly sensitive area and general area.

Comprehensive Evaluation of Network Information Security Based on Dynamic Fuzzy Mathematics

2014 ◽  
Vol 701-702 ◽  
pp. 167-171
Author(s):  
Xin Li ◽  
Dong Sheng Chen
Keyword(s):  
Information Security ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Development Trend ◽  
Fuzzy Evaluation ◽  
Network Information ◽  
The Index System ◽  
Factor Evaluation ◽  
Fuzzy Weight ◽  
Evaluation Matrix

Based on the theory of dynamic fuzzy logic, dynamic fuzzy sets and dynamic fuzzy evaluation method are proposed. According to the index system of evaluation of network information security, dynamic fuzzy weight matrix and the single factor evaluation matrix are determined first. Then by multi-level dynamic fuzzy recursion numerical processing of the comment weight vectors, evaluation result is obtained, which not only reflects the current situation of network information security but also predicts its development trend in future. This evaluation method is relatively object and comprehensive compared to previous ones.

Fuzzy Comprehensive Evaluation of Air Quality in Home

2014 ◽  
Vol 484-485 ◽  
pp. 484-487
Author(s):  
Qing Tao Wei ◽  
Li Na Zhao ◽  
Hai Ting Lv
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Objective Evaluation ◽  
Weight Vector ◽  
Comprehensive Evaluation Method ◽  
Four Levels

Based on the indoor air quality and the evaluation index, utilize the fuzzy mathematical theory, comprehensively consider on the three important factors which influence the air quality, and through the calculation and determination the weight vector, divide the air quality into four levels as "qualified"," mild overweight"," overweight", "severe overweight". Through sampling the indoor air in a family, according to the fuzzy comprehensive evaluation method and the maximum membership degree principle, get every sample point levels from data. It will provide the method of getting a more objective evaluation of indoor air quality situation.

scholarly journals Research on Construction Risk Management of Underground Engineering Based on AHP-Fuzzy Comprehensive Evaluation Method

2021 ◽  
Vol 257 ◽  
pp. 02083
Author(s):  
Zhichao Han ◽  
Jun Zhu ◽  
Jianduo Wang
Keyword(s):  
Risk Management ◽  
Risk Factor ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Underground Engineering ◽  
Engineering Construction ◽  
Comprehensive Evaluation Method ◽  
Construction Risk ◽  
Factor Evaluation

In order to strengthen the construction risk management of underground engineering projects, reduce the probability of accidents, and ensure that the underground engineering completes the construction tasks on schedule, the article relies on a certain subway engineering project to carry out research from the aspects of risk identification, risk factor analysis, and risk factor evaluation. The article adopts analytic hierarchy process and fuzzy comprehensive evaluation method to carry out risk factor evaluation weight analysis and risk system evaluation in the construction process, and then realize reasonable prediction and evaluation of construction risk factors. Finally, this essay sorts out the prevention and control measures of underground engineering construction risk management from five aspects of personnel, machinery, management, environment and technology, and then provides auxiliary decision-making for underground engineering construction risk management.

A fuzzy evaluation method of road vehicle automatic weighing instrument in dynamic force metrological performance

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1365-1372
Author(s):  
Xiaohui Mao ◽  
Liping Fei ◽  
Xianping Shang ◽  
Jie Chen ◽  
Zhihao Zhao
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Dynamic Performance ◽  
Dynamic Force ◽  
Fuzzy Evaluation ◽  
Road Vehicle ◽  
Evaluation Standard ◽  
The Road ◽  
Metrological Performance

The measurement performance of road vehicle automatic weighing instrument installed on highways is directly related to the safety of roads and bridges. The fuzzy number indicates that the uncertain quantization problem has obvious advantages. By analyzing the factors affecting the metrological performance of the road vehicle automatic weighing instrument, combined with the fuzzy mathematics theory, the weight evaluation model of the dynamic performance evaluation of the road vehicle automatic weighing instrument is proposed. The factors of measurement performance are summarized and calculated, and the comprehensive evaluation standard of the metering performance of the weighing equipment is obtained, so as to realize the quantifiable analysis and evaluation of the metering performance of the dynamic road vehicle automatic weighing instrument in use, and provide data reference for adopting a more scientific measurement supervision method.

Sign in / Sign up

Export Citation Format

Share Document