scholarly journals Clean Power Dispatching of Coal-Fired Power Generation in China Based on the Production Cleanliness Evaluation Method

2019 ◽  
Vol 11 (23) ◽  
pp. 6778 ◽  
Author(s):  
Tao Li ◽  
Yimiao Song ◽  
Jing Shen
Keyword(s):  
Power Plants ◽  
Evaluation Method ◽  
Evaluation Model ◽  
Value Added ◽  
Clean Energy ◽  
Power Dispatch ◽  
Environmental Value ◽  
Environmental Reference ◽  
Power Dispatching

China’s achievements in climate change and clean energy have been recognized by the international community. Although China has achieved successes in the field of clean energy, especially clean power dispatch, power dispatch is still one-sided and incomplete when considering environmental aspects. This paper presents a comprehensive production cleanliness evaluation model to assign a comprehensive environmental value as a reference for clean power dispatch. The model considers all the pollutants currently regulated in China’s coal-fired power plants, carbon emissions, and sustainability as three basic environmental constraints. Then, emergy analysis is used to unify the input/output materials with different units of measurement, and the emergy-based environmental value added (EEVA) value is constructed. As an integrated environmental value, the EEVA can provide an environmental reference for clean power dispatch. Finally, we selected a representative coal-fired power plant in China as a case study. By applying the above model, the dispatching sequence for four generating units was arranged from the perspective of cleanliness.

scholarly journals Multi-Granularity Feasibility Evaluation Method of the Partial Destructive Disassembly for an End-of-Life Product

2021 ◽  
Author(s):  
Lei Guo ◽  
Xiufen ZHANG
Keyword(s):  
End Of Life ◽  
Evaluation Method ◽  
Evaluation Model ◽  
Entropy Weight ◽  
Component Level ◽  
Fine Grained ◽  
Feasibility Evaluation ◽  
Entropy Weight Method ◽  
Weight Method

Abstract Partial destructive disassembly (PDD) is essential for end-of-life products to improve their automatic disassembly efficiency and reduce disassembly cost. A feasibility evaluation of the PDD is the key step to evaluate whether the PDD can be implemented. However, it has not been studied previously to our knowledge. To deal with this problem, a multi-granularity feasibility evaluation method is proposed. A multi-granularity feasibility evaluation model of the PDD was constructed based on the complex product’s hierarchical structure, which not only described the evaluation indices from the product level to the component level but also presented methods and rules to quantify them. 1Thus, disassembly entropy was introduced into the target group’s coarse granularity evaluation. The feasibility of the fine-grained index of the PDD for the component layer was constructed based on the product’s failure characteristic. The fine-grained index was calculated by the fuzzy trigonometric function and its weighting was obtained based on the structure entropy weight method. Thus, the results of the evaluation were used as feedback to guide the PDD process. Finally, a Passat engine case study illustrates the feasibility and effectiveness of the method.

scholarly journals A RESEARCH ON QUALITY EVALUATION METHOD FOR THEMATIC MONITORING RESULTS

2020 ◽  
Vol XLII-3/W10 ◽  
pp. 1221-1224
Author(s):  
C. X. Chen ◽  
J. X. Zhang ◽  
H. T. Zhao ◽  
C. Li ◽  
Y. Zhao
Keyword(s):  
Quality Evaluation ◽  
Evaluation Method ◽  
Evaluation Model ◽  
Chinese Government ◽  
Quality Inspection ◽  
The Public ◽  
Analysis And Evaluation ◽  
Disaster Monitoring ◽  
The Government

Abstract. The geographical condition is a very important component of a country's national condition, and geographical conditions monitoring (GCM) has been a great concern to the Chinese government. In accordance with application areas, GCM can be divided into fundamental monitoring, thematic monitoring, and disaster monitoring. Thematic monitoring is a special type of designated subject monitoring that concerns the public or the government. This paper mainly discusses the quality evaluating method of thematic monitoring results (TMRs). Based on analysis, referring to GB/T 24356-2009 “Quality Inspection and Acceptance of Surveying and Mapping Achievements”, TMRs data Including monitoring data results, analysis and evaluation results, map results and monitoring report results. The operability of the quality evaluation model is illustrated by a case study of the quality inspection of urban geographic national condition monitoring.

Research on Evaluation Model of Organisational Knowledge Assets

2008 ◽  
Vol 07 (01) ◽  
pp. 47-54 ◽  
Author(s):  
Jun Li ◽  
Ling Ling Zhang ◽  
Yong Shi
Keyword(s):  
Balanced Scorecard ◽  
Evaluation Method ◽  
Evaluation Model ◽  
Knowledge Assets ◽  
The Balanced Scorecard ◽  
Research On Evaluation ◽  
Organisational Knowledge ◽  
The Status ◽  
Financial Indices

Nowadays, valuation and measurement of knowledge assets has become a challenging problem for many organisations. This paper first introduces the concept of knowledge assets and presents some evaluation models of knowledge assets. Then, based on the methodology of the balanced scorecard, this paper proposes an index system which comprises quantitative indices and qualitative indices and financial indices and non-financial indices which are weighted by the analytical hierarchy process method to evaluate organisational knowledge assets. Thus, the status of organisational knowledge assets management can be estimated by a final score calculated by efficacy coefficient method and professional evaluation method in the model. At last, the paper gives a case study for this model's application. It is hoped that the information accrued from the case study, together with the evaluation model, will help to pave the way for organisations to evaluate their knowledge assets.

scholarly journals Carbon Lock-in and Contradictions – Teaching Mexico’s Energy Transition

2021 ◽  
Author(s):  
Ariel Macaspac Hernandez ◽  
Daniel Alejandro Pacheco Rojas ◽  
Diana Barrón Villaverde
Keyword(s):  
Power Plants ◽  
Sustainable Energy ◽  
Energy Transition ◽  
Clean Energy ◽  
Interesting Case ◽  
Climatic Conditions ◽  
Entry Points ◽  
Development Trajectory ◽  
Lock In

The energy sector plays an important role in Mexico’s development trajectory. Mexico makes an interesting case study, because it shows how difficult it is to reduce fossil energy dependence despite geographic and climatic conditions that favour renewable energy deployment and use. Resolving path dependencies and the related carbon lock-in are key to Mexico’s sustainable energy transition. This case study aims to identify and discuss how carbon lock-in affects Mexico’s sustainable energy transition. Mexico’s carbon lock-in involves oil and oil-run power plants that are costly to build but relatively inexpensive to operate. This case study identifies potential entry points for transitioning towards sustainable energy in Mexico – resources that can promote the use of clean energy despite carbon lock-in. For example, focusing on electrification – particularly of the carbon-intensive sectors – can help Mexico transit towards sustainable energy despite institutional constraints. Complementing this case study is a teaching guide with recommendations for using Mexico’s energy transition in courses on sustainability. It introduces a “learning activation framework” to identify emerging opportunities that can advance sustainable energy transitions in different cases of carbon lock-in. Finally, the framework also gives students a chance to help dismantle or cope with carbon lock-ins.

A Dynamic grey target evaluation method with multiple reference points for new R&D institution performance

2021 ◽  
pp. 1-17
Author(s):  
Jiang Lin ◽  
Zhu Jianjun
Keyword(s):  
Evaluation Method ◽  
Evaluation Model ◽  
Reference Points ◽  
Evaluation Indexes ◽  
Multi Stage ◽  
Business Form ◽  
New Business ◽  
Grey Number ◽  
Index Weight

As a new business form of innovation and development, new R&D institutions are characterized by their focus on regional and industrial major technical needs, diversified investment subjects, diversified construction models, and marketization of operation mechanism. Their performance evaluation faces new problems and challenges. This paper proposes a new dynamic grey target evaluation model of R&D institutions’ performance in regard to four evaluation indexes, three reference points, and four stages. Aiming at resolving the multi-attribute dynamic decision problem with the attribute value being an interval grey number and the decision-maker’s weight information unknown, we propose the use of the close degree of grey incidence method to determine the index weight. Our approach revolves around three reference points: peers, development, and expectations. Value matrices of the three reference points are expressed according to the Cumulative Prospect Theory, which also determines the distance from the center of the grey target. Based on the Orness measure, we establish a multi-stage weight optimization model to calculate the stage weight and the comprehensive cumulative prospect value of each agency. Finally, we verify the validity and practicability of our method with the use of parameter sensitivity analysis, a comparison with other methods, and a case study.

scholarly journals Carbon Lock-In and Contradictions—Applied Guide to Academic Teaching of Mexico’s Energy Transition

2021 ◽  
Vol 11 (18) ◽  
pp. 8289
Author(s):  
Ariel Macaspac Hernandez ◽  
Daniel Alejandro Pacheco Rojas ◽  
Diana Barrón Villaverde
Keyword(s):  
Power Plants ◽  
Sustainable Energy ◽  
Energy Transition ◽  
Clean Energy ◽  
Interesting Case ◽  
Climatic Conditions ◽  
Teaching Guide ◽  
Entry Points ◽  
Lock In

The energy sector plays an important role in Mexico’s development trajectory. Mexico makes an interesting case study because it shows how difficult it is to reduce fossil energy dependence despite geographic and climatic conditions that favour renewable energy deployment and use. Resolving path dependencies and the related carbon lock-in are key to Mexico’s sustainable energy transition. This applied teaching guide contemplates the use of a case-illustration typology to identify and discuss how the politics about carbon lock-in affects Mexico’s sustainable energy transition. This methodology is an innovative endeavour that aims to apply the case study in classrooms with the intention to encourage discussions and solution-oriented approaches when tangible actions are identified by the educator and students. This methodology elevates the case study to a “living” case study that leads to recommended actions. The applied teaching guide allows educators, who are mostly researchers, to reflect on how Mexico’s case study could be explained not only to promote the students’ understanding of the challenges, but also to provide educators/researchers the skills on how to effectively disseminate knowledge. Mexico’s carbon lock-in involves oil and oil-run power plants that are costly to build but relatively inexpensive to operate. To conclude, this case study identifies potential entry points for transitioning towards sustainable energy in Mexico—resources that can promote the use of clean energy despite carbon lock-in. For example, focusing on electrification—particularly the carbon-intensive sectors—can help Mexico transit towards sustainable energy despite institutional constraints. Complementing this case study is a teaching guide with recommendations for using Mexico’s energy transition in courses on sustainability. By understanding how to explain the case study, the educator/researcher can better structure the complexity of the case study. This approach introduces a “learning activation framework” to identify emerging opportunities that can advance sustainable energy transitions in different cases of carbon lock-in. The framework also gives students a chance to help dismantle or cope with carbon lock-ins. Mexico’s energy transition makes a valuable teaching example because its energy transition is part of a broader developmental goal. This teaching guide’s systematic approach can maximise the students’ learning experience.

scholarly journals Research on Green Power Dispatching Based on an Emergy-Based Life Cycle Assessment

Processes ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 114
Author(s):  
Tao Li ◽  
Yi Miao Song ◽  
Ang Li ◽  
Jing Shen ◽  
Chao Liang ◽  
...  
Keyword(s):  
Power Generation ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Power Plants ◽  
Clean Energy ◽  
Green Energy ◽  
Environmental Indicators ◽  
Cleaner Production ◽  
Power Dispatching ◽  
Whole Life Cycle

Environmental protection pressures and green energy strategies have created major challenges for a cleaner production of China’s coal-fired power generation. Although China’s electric power dispatching department has tried to prioritize clean energy, the current dispatching models lack environmental indicators related to coal-fired power generation. The main purpose of this paper is to provide a comprehensive environmental indicator for the cleanliness evaluation of coal-fired power plants. In this paper, the (Emergy-based Life Cycle Assessment) Em-LCA method is used to measure and analyze environmental related resource consumption, socio-economic investment, and emissions in the whole life cycle of coal-fired power plants. At the same time, based on the above three environmental impacts in the whole life cycle, this paper constructs the (Em-LCA based Cleaner Production Comprehensive Evaluation) ECPCE index to guide a green dispatching plan. By comparing the calculation results of the index, this paper finds that there are differences in the environmental advantages of different generating units in green dispatching, which are closely related to the process management of coal-fired power plants in production and the environment.

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>

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