scholarly journals Assessing Risks from Groundwater Exploitation and Utilization: Case Study of the Shanghai Megacity, China

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1775 ◽  
Author(s):  
Hui Zhang ◽  
Jingjie Yu ◽  
Chaoyang Du ◽  
Jun Xia ◽  
Xiaojun Wang
Keyword(s):  
Risk Evaluation ◽  
Evaluation Model ◽  
Eastern China ◽  
Assessment Method ◽  
Assessment Model ◽  
Groundwater Exploitation ◽  
Exploitation And Utilization ◽  
The Index System ◽  
Shanghai City

With rapid economic development, demand for water resources is continuously increasing, which has resulted in common overexploitation of groundwater, particularly in megacities. This overexploitation of groundwater over many years has brought a series of adverse problems, including groundwater level decline, land subsidence and hydrogeological issues. To quantitatively describe these risks, we propose a risk evaluation model for groundwater exploitation and utilization. By deducing and expanding on the cusp catastrophe type, this study breaks through the limitations on the catastrophe assessment method, e.g., the number of indicators, and establishes an improved catastrophe assessment model for groundwater exploitation and utilization risk. In addition, the index system of the risk evaluation is constructed including three criterion layers: groundwater system condition (B1), groundwater exploitation and utilization (B2) and groundwater environmental problems (B3) and is tested for the conditions in Shanghai City, eastern China. The evaluation results show that the comprehensive risk values for groundwater exploitation and utilization in all districts (counties) of Shanghai are between 0.68 and 0.85, which categorizes the city as in the moderate risk zone; therefore, the improved catastrophe model is suitable for assessing groundwater exploitation risk in Shanghai City and should be applicable more broadly for the effective protection and sustainable supply of groundwater.

scholarly journals INTRODUCING A METHOD OF URBAN SOIL RISK EVALUATION – A CASE STUDY ON URBAN RECREATIONAL AREAS IN CLUJ NAPOCA

2016 ◽  
Vol 20 (4) ◽  
Author(s):  
ANDRA CRISTINA GAGIU ◽  
ELENA MARIA PICA ◽  
CLAUDIU TANASELIA ◽  
MONICA URSU
Keyword(s):  
Urban Soil ◽  
Risk Evaluation ◽  
Quantitative Method ◽  
Assessment Method ◽  
Soil Samples ◽  
Risk Assessment Method ◽  
Pollution Management ◽  
Potential Risks ◽  
The City

Assessing risks related to urban soil contamination represents a key part of pollution management. The current research proposes a quantitative method that defines and highlights unacceptable risks. The applicability of the method is presented in a case study on several urban recreational areas from the city of Cluj-Napoca, Romania. Concentrations of As, Cu, Cd, Zn, Pb, Hg, Co, Ni and Mg were identified in a number of 48 soil samples from 12 intensively used recreational areas in Cluj-Napoca. The proposed risk assessment method is applied, and potential risks are calculated for all locations.

Predictive Comprehensive Carrying Capacity Assessment for Marine Reclamation with Hydrodynamics, Ecology and Sediment

2014 ◽  
Vol 522-524 ◽  
pp. 774-777
Author(s):  
Ming Chang Li ◽  
Qi Si ◽  
Guang Lou Li ◽  
Ying Wang
Keyword(s):  
Carrying Capacity ◽  
Water Exchange ◽  
Assessment Method ◽  
Assessment Model ◽  
Capacity Assessment ◽  
Systematic Method ◽  
Research Results ◽  
Pair Coupling ◽  
Comprehensive Carrying Capacity

In this paper, a systematic method is used to evaluate the comprehensive carrying capacity of marine reclamation with the predictive data of hydrodynamics, ecology and sediment. The predictive data are obtained by the numerical simulated results of hydrodynamics, water exchange, ecological loss and sediment. These data are coupled and input into a nonlinear set pair coupling assessment model for the predictive comprehensive carrying capacity assessment of marine reclamation. This method is calibrated by case study of Longqi Bay in Jinzhou China. This research results show that the predictive comprehensive carrying capacity assessment method is essential for guiding the marine reclamation.

scholarly journals An Optimal Decision Assessment Model Based on the Acceptable Maximum LGD of Commercial Banks and Its Application

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Baofeng Shi ◽  
Bin Meng ◽  
Jing Wang
Keyword(s):  
Commercial Banks ◽  
Risk Evaluation ◽  
Credit Rating ◽  
Assessment Method ◽  
Assessment Model ◽  
Optimal Decision ◽  
Constraint Condition ◽  
Loss Given Default ◽  
Model Based ◽  
Rating Model

This paper introduces a novel decision assessment method which is suitable for customers’ credit risk evaluation and credit decision. First of all, the paper creates an optimal credit rating model, and it consisted of an objective function and two constraint conditions. The first constraint condition of the strictly increasing LGDs eliminates the unreasonable phenomenon that the higher the credit rating is, the higher the LGD (loss given default) is. Secondly, on the basis of the credit rating results, a credit decision-making assessment model based on measuring the acceptable maximum LGD of commercial banks is established. Thirdly, empirical results using the data on 2817 farmers’ microfinance of a Chinese commercial bank suggest that the proposed approach can accurately find out the good customers from all the loan applications. Moreover, our approach contributes to providing a reference for decision assessment of customers in other commercial banks in the world.

The Risk Evaluation Model of Mining Project Investment Based on Fuzzy Comprehensive Method

2013 ◽  
Vol 295-298 ◽  
pp. 2928-2934 ◽  
Author(s):  
Zuo Gong Wang ◽  
Jie Zheng ◽  
Hui Yang Li
Keyword(s):  
Risk Factors ◽  
Risk Evaluation ◽  
Evaluation Model ◽  
Evaluation Index System ◽  
Assessment Model ◽  
Investment Risk ◽  
Project Investment ◽  
Comprehensive Method ◽  
Mining Project ◽  
Risk Evaluation Model

Mining project investment has a lot of features, such as long period, slow effect, big capital size, irreversible investment, the numerous and complicated risk factors. Therefore, it is necessary to analyze and evaluate the investment risk before accepting project. On the basis of analyzing the mining project risk factors, establishing the risk evaluation index system, establishing the risk assessment model based on fuzzy comprehensive method, then evaluating the investment risk of mining project quantitatively, which provides the decision-making basis, makes the investment more scientific and safer and reduces the risk of investment.

Comprehensive Assessment Method of Equipment Support Exercise

2013 ◽  
Vol 706-708 ◽  
pp. 1932-1935
Author(s):  
Wu Kui Zhao ◽  
Cheng Zhang ◽  
Yi Bo Wang
Keyword(s):  
Analytic Hierarchy Process ◽  
Evaluation Method ◽  
Assessment Method ◽  
Assessment Model ◽  
Assessment Process ◽  
Fuzzy Evaluation ◽  
Analytic Hierarchy ◽  
The Index System ◽  
Basic Ideas ◽  
Hierarchy Process

Equipment support exercise is the highest phase of equipment support training and an effective approach to improve equipment support capability. Assessment of equipment support exercise is the main measure to test and rate the effect and level of equipment support exercise. The main influencing factors of equipment support exercise are analyzed and the index system is established from the angle of equipment support capability. The assessment model of equipment support exercise is constructed based on the basic ideas of analytic hierarchy process (AHP) and fuzzy evaluation method. The assessment process of equipment support exercise using the proposed method is illustrated in detail. The correctness and validity of the proposed method is verified through a calculation example. The result of the example indicates that the proposed method can give correct assessment level of equipment support exercise, which provides an effective approach for the assessment of equipment support exercise.

scholarly journals Entrepreneurial training curriculum assessment: The case of new venture creation learnerships

2014 ◽  
Vol 10 (4) ◽  
pp. 504-529
Author(s):  
M Pretorius ◽  
T Wlodarczyk
Keyword(s):  
Development Strategy ◽  
Assessment Method ◽  
Assessment Model ◽  
New Venture ◽  
Skills Development ◽  
New Venture Creation ◽  
Venture Creation ◽  
Evaluation Instrument ◽  
Entrepreneurial Training

This paper joins the debate about how best to assess entrepreneurial training interventions, using a case-study. Contextual secondary literature about the structure and content of such interventions is briefly reviewed. Based on this review, a framework is developed and applied to the Provincial Skills Development Pilot Project’s current New Venture Creation Learnership programme. This in-depth case study uses an evaluation instrument based on the entrepreneurial assessment model proposed by Pretorius (2001: 264). Results show that the chosen programme exhibits certain limitations, which restricts its success in developing entrepreneurs in line with the National Skills Development Strategy. However, the programme possesses many strengths and its limitations are easily remedied. The proposed assessment method successfully identifies the strengths and weaknesses of the programme. 

The Application of Fuzzy Delphi Expert Method on Urban River Ecosystem Assessment

2012 ◽  
Vol 610-613 ◽  
pp. 841-844
Author(s):  
Ching I Wu ◽  
Pi Fen Wang
Keyword(s):  
Assessment Method ◽  
Urban River ◽  
Assessment Model ◽  
Gene Pools ◽  
River Ecosystem ◽  
Water Drainage ◽  
Fuzzy Delphi ◽  
Initial Questionnaire ◽  
Ecological Conservation ◽  
The Index System

A river is a water container. Moreover, rivers and riverside green spaces are both important ecological gene pools. The functions of water, drainage, and ecological conservation are under serious consideration because of increasing global water issues. However, an assessment method that is integrated with multiple thinking is lacking. An urban river ecosystem quality assessment model cannot be viewed only with a hydraulic engineering perspective because a river ecosystem combines economic, social, and natural aspects. In this study, a literature review is developed and the basic architecture is indexed to increase the objectivity of the index system. The goal of sustainable urban river assessment is to establish an initial questionnaire containing assessment model indexes. A total of 23 indicators are identified by using fuzzy number calculations of expert questionnaires. These are divided into six categories: water quality, biological, sediment, stream conditions, vegetation, and river type.

scholarly journals Dynamic risk evaluation method for collapse disasters of drill-and-blast tunnels: a case study

2021 ◽  
Vol 19 (1) ◽  
pp. 309-330
Author(s):  
Bo Wu ◽  
◽  
Weixing Qiu ◽  
Wei Huang ◽  
Guowang Meng ◽  
...  
Keyword(s):  
Evaluation Method ◽  
Cloud Model ◽  
Evaluation Model ◽  
Assessment Method ◽  
Dynamic Evaluation ◽  
Dynamic Risk ◽  
Dynamic Risk Assessment ◽  
Tunnel Collapse ◽  
Rock Tunnels

<abstract> <p>The tunnel collapse is one of the most frequent and harmful geological hazards during the construction of highway rock tunnels. As for reducing the occurrence probability of tunnel collapse, a new dynamic risk assessment methodology for the tunnel collapse was established, which combines the Cloud model (CM), the Membership function, and the Bayesian network (BN). During the preparation phase, tunnel collapse risk factors are identified and an index system is constructed. Then, the proposed novel assessment method is used to evaluate the probability of tunnel collapse risk for on-site construction. The probability of tunnel collapse risk in the dynamic process of construction can provide real-time guidance for tunnel construction. Moreover, a typical case study of the Yutangxi tunnel is performed, which belongs to the Pu-Yan Highway Project (Fujian, China). The results show that the dynamic evaluation model is well validated and applied. The risk value of tunnel collapse in a construction cycle is predicted successfully, and on-site construction is guided to reduce the occurrence of tunnel collapse. Besides, it also proves the feasibility of the dynamic evaluation method and its application potential.</p> </abstract>

Supply Chain Risk Evaluation Based on Bayesian Network

2013 ◽  
Vol 680 ◽  
pp. 550-553
Author(s):  
Bo Chao Liu
Keyword(s):  
Risk Assessment ◽  
Supply Chain ◽  
Bayesian Network ◽  
Risk Evaluation ◽  
Evaluation Model ◽  
Assessment Model ◽  
Risk Assessment Model ◽  
Supply Chain Risk ◽  
Logistics Company ◽  
Proposed Model

The evaluation for supply chain risk is very important to show the latent risk and eliminate the risk. In the study, Bayesian network is proposed to evaluate the supply chain risk. The assessment indexes of supply chain risk are analyzed before supply chain risk assessment. Then, the assessment indexes of supply chain risk can be used to construct the supply chain risk assessment model. We apply a certain logistics company to study the evaluation ability of Bayesian network evaluation model proposed here. The experimental results prove the effectiveness of the proposed model.

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