scholarly journals Team Collaboration Assessment Method in Marine Engine Room Simulator

2021 ◽  
pp. 315-332
Author(s):  
Hui Cao ◽  
Keyword(s):  
Evaluation Method ◽  
Similarity Theory ◽  
Fuzzy Comprehensive Evaluation ◽  
Assessment Method ◽  
Task Completion ◽  
Weighting Method ◽  
Team Collaboration ◽  
Engine Room ◽  
The Impact ◽  
Assessment Result

Based on the fuzzy mathematics and set similarity theory an intelligent collaboration assessment method for engine room simulator was studied. First, an integrated weighting method using both subjective and objective information was designed to obtain the weight vector; second, the fuzzy comprehensive evaluation method was used to calculate the completion degree of team collaboration, then the Dice coefficient and the Tversky coefficient were adopted to quantify the sequence factor, interactivity factor, redundancy factor and unauthorized factor of team collaboration effectiveness; third, a comprehensive calculation was achieved by the completion degree and the four factors to get the team collaboration assessment result; finally, the influence of the collaboration factors on assessment result was analyzed by an example, and it was found that even if the team get a higher task completion degree, due to some factors, the score is still low. The research shows that the collaborative performance of a team can greatly influence the final assessment result, the quantitative analysis of team collaboration can more objectively reveal the impact on collaboration. It is an effective method to add the influence of team cooperation factors to the traditional individual evaluation.

Risk Assessment of Reservoir by Fuzzy Comprehensive Evaluation Method Based on Information Entropy

2013 ◽  
Vol 438-439 ◽  
pp. 1612-1618
Author(s):  
Yong Jia Song ◽  
Cong Cong Jin ◽  
Xian Cai Zhang ◽  
Jing Li
Keyword(s):  
Risk Assessment ◽  
Information Entropy ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Assessment Method ◽  
Assessment Model ◽  
Risk Level ◽  
Entropy Weight ◽  
Weighting Method

This paper proposes a new risk assessment model on account of the fuzziness and uncertainty of risk factors in the reservoir after earthquake. The paper adopts methods of information entropy and fuzzy mathematics to assess risk level of the model. After analyzing the statistical data of earthquake-damaged reservoirs, we present comprehensive weight composed of importance and improved entropy weight. Base on comprehensive weight, we can adopt membership function to establish single factor evaluation of the model. Moreover, we combine fuzzy weighting method to assess risk level of a reservoir after earthquake. The result shows that risk level of the reservoir is high-risk. The case study verifies the practicability and rationality of the risk assessment method. Therefore, the method could be applied in the emergency rescue and reinforcement for reservoir after earthquake.

scholarly journals Reliability and capability based computation offloading strategy for vehicular ad hoc clouds

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Bo Li ◽  
Ziyi Peng ◽  
Peng Hou ◽  
Min He ◽  
Marco Anisetti ◽  
...  
Keyword(s):  
System Reliability ◽  
High Performance ◽  
Evaluation Method ◽  
Ad Hoc ◽  
Comprehensive Evaluation ◽  
Autonomous Driving ◽  
Computation Offloading ◽  
Task Completion ◽  
Communication Link ◽  
The Impact

AbstractIn the Internet of Vehicles (IoV), with the increasing demand for intelligent technologies such as driverless driving, more and more in-vehicle applications have been put into autonomous driving. For the computationally intensive task, the vehicle self-organizing network uses other high-performance nodes in the vehicle driving environment to hand over tasks to these nodes for execution. In this way, the computational load of the cloud alleviated. However, due to the unreliability of the communication link and the dynamic changes of the vehicle environment, lengthy task completion time may lead to the increase of task failure rate. Although the flooding algorithm can improve the success rate of task completion, the offloading expend will be large. Aiming at this problem, we design the partial flooding algorithm, which is a comprehensive evaluation method based on system reliability in the vehicle computing environment without infrastructure. Using V2V link to select some nodes with better performance for partial flooding offloading to reduce the task complete time, improve system reliability and cut down the impact of vehicle mobility on offloading. The results show that the proposed offloading strategy can not only improve the utilization of computing resources, but also promote the offloading performance of the system.

Preliminary Study on Indexes and Assessment Method for Power Grid Development Diagnosis

2013 ◽  
Vol 291-294 ◽  
pp. 2217-2221
Author(s):  
Hai Yan Wang ◽  
Wei Li ◽  
Xin Wei Du ◽  
Quan Ming Zhang ◽  
Song Ling Dai ◽  
...  
Keyword(s):  
Index System ◽  
Evaluation Method ◽  
High Efficiency ◽  
Comprehensive Evaluation ◽  
Power Grid ◽  
Fuzzy Comprehensive Evaluation ◽  
Assessment Method ◽  
Evaluation Index System ◽  
Grid Security ◽  
Development Evaluation

With integrated consideration of existing research on power grid development evaluation index system and requirements of power grid development diagnosis, a more comprehensive power grid development diagnostic index system is established from five aspects of power grid security and reliability, high efficiency, coordination, economics and social environment and more than 20 indicators. In addition, a new power grid development diagnostic evaluation method based on hierarchical analysis and multi-level fuzzy comprehensive evaluation is proposed in order to diagnose and assess power grid status quo and the actual level of development comprehensively, objectively and systematically ,which will help power grid enterprises conveniently to find the main reason of affecting the power grid and enterprise development and encourage enterprises to continuously improve the targeted improvement measures and the level of grid development.

Reliability Evaluation of Electromagnetic Flowmeter Based on Entropy Weight and Fuzzy Theory

2011 ◽  
Vol 383-390 ◽  
pp. 5321-5326
Author(s):  
Chun Yu Yu ◽  
Kai Li Zhang ◽  
De Zhong Ma ◽  
Zhen Zhou
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Electromagnetic Flowmeter ◽  
Qualitative Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Reliability Evaluation ◽  
Assessment Method ◽  
Entropy Weight ◽  
Evaluation Indexes ◽  
Mean Time

With regard to the problem that only single index has been used in assessment of reliability, a suitable comprehensive assessment method about reliability index of electromagnetic flowmeter was established, and Mean Time To First Failure(MTTFF), Mean Time Between Failure(MTBF) and equivalent failure rate(D) were selected as the standards of reliability evaluation for the electromagnetic flowmeter in this paper. Because many evaluation elements involved and failure information and evaluation indexes are fuzzy, fuzzy comprehensive evaluation based on entropy weight was introduced to quantify the qualitative evaluation indexes, and indexes weight were determined scientifically by using comprehensive evaluation obtained from combining a subjective expert’s evaluation weight with objective entropy weight. Two kinds of the domestically produced electromagnetic flowmeter were studied, the censored data obtained from the process of consumers’s use were analyzed, and fuzzy comprehensive evaluation method based on entropy weight was used to evaluate the indexes of reliability in two kinds of electromagnetic flowmeter comprehensively. The results show that the conclusion is consistent with the fact, the method can effectively solve the problem existed in current modeling, and evaluation of electromagnetic flowmeter reliability has great practical value in the application.

scholarly journals The Application of an Improved Fuzzy Comprehensive Evaluation in Coal Quality Rating: The Case Study of China

2022 ◽  
Vol 9 ◽  
Author(s):  
Feng Cai ◽  
Lingling Yang ◽  
Yuan Yuan ◽  
Farhad Taghizadeh-Hesary
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Mining Area ◽  
Utilization Efficiency ◽  
Weighting Method ◽  
Coal Quality ◽  
Carbon Neutrality ◽  
Quality Stability ◽  
Quality Rating

Coal quality rating can help reduce greenhouse gas emissions, solving the global warming problem. It becomes more important as the carbon neutrality by the mid-21st century agreement is accepted by 195 countries, including China. In this paper, an improved fuzzy comprehensive evaluation method is introduced for coal quality rating. The data used in this work are of the Hostolgoi coalfield of the Xinjiang Province of China. Six industrial analysis indicators are determined as evaluation factors by taking the coal samples of different coal seam depths in the mining area. The super-standard multiple methods and the double-weight super-standard weighting method are combined to form a comprehensive weight. The results show that most of the coal samples of this coal mine are at grades I–II, and the overall coal is with good-quality stability. The evaluation results can improve the coal utilization efficiency and provide scientific guidance for evaluating and exploiting coal resources in coal geological exploration.

scholarly journals Multi-level fuzzy comprehensive evaluation of the influence of reservoir sedimentation based on improved cloud model

2021 ◽  
Author(s):  
Mingwang Zhang ◽  
Kebin Shi
Keyword(s):  
Comprehensive Evaluation ◽  
Cloud Model ◽  
Evaluation Model ◽  
Fuzzy Comprehensive Evaluation ◽  
Reservoir Sedimentation ◽  
Entropy Weight ◽  
Weighting Method ◽  
Multi Level ◽  
Functional Operation ◽  
The Impact

Abstract The extent of reservoir sedimentation is an important index related to the functional operation of reservoirs. Therefore, it is vital to accurately conduct sedimentary assessment. In this paper, the analytic hierarchy process was used to determine subjective weights, gray correlation analysis and entropy weight method were used to determine objective weights. The combination weights obtained using optimized combination weighting method based on genetic algorithm were more suitable for the comprehensive analysis of the impact of reservoir sedimentation. This was then used to constructed a multi-level fuzzy comprehensive evaluation model based on improved cloud model. A reservoir was selected as the study object, and its sedimentation impact level was evaluated: the numerical characteristics of the stratus cloud of the comment on the impact of the reservoir sedimentation were (0.6372, 0.0664, 0.0795). The results showed that the reservoir sedimentation is considered as severe influence, and the sedimentation has become a major problem that needed to be solved urgently. The results of this paper could provide insight for reservoir research domestically and abroad. Furthermore, it could also enable managers to more accurately grasp the severity of reservoir sedimentation.

A Comprehensive Analysis Method Based on Fuzzy Hierarchy for the Safety Assessment of Overhead Traveling Crane

2010 ◽  
Vol 20-23 ◽  
pp. 196-201
Author(s):  
Ge Ning Xu ◽  
Fan Jiang
Keyword(s):  
Safety Assessment ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Safety Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Assessment Method ◽  
Assessment Model ◽  
Analytic Hierarchy ◽  
Set Up ◽  
Hierarchy Process

By combined fuzzy comprehensive evaluation with AHP (Analytic Hierarchy Process) together, a safety assessment model for overhead traveling crane is set up in regard to deficiency of safety assessment method for crane at present, which can evaluate safety of overhead traveling crane in-service qualitatively and quantitatively. Through a safety analysis and assessment on general overhead traveling crane, the result of assessment is in accord with the practical situation of overhead traveling crane. It can reflect more fully the safety of the whole crane system and the influence and level of each factor to whole crane system safety, witch an effective synthetic evaluation method is put forward for the safety evaluation of crane.

scholarly journals Study on Sustainable Development of the Transnational Power Grid Interconnection Projects under Diversified Risks Based on Variable Weight Theory and Bayesian Network

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Hao Wang ◽  
Yanan Jin ◽  
Xin Tan
Keyword(s):  
Risk Assessment ◽  
Sustainable Development ◽  
Power Grid ◽  
Assessment Method ◽  
Practical Significance ◽  
Weighting Method ◽  
Variable Weight ◽  
The Government ◽  
The Impact ◽  
Grid Interconnection

Transnational power grid interconnection is an important measure to promote the construction of energy Internet. It can meet the global power demand in a clean and green way, promote the UN’s concept of “sustainable energy,” and tackle climate changes. But, transnational power grid projects face many complex and variable risks due to their complex background and lacking experience. According to the characteristics of transnational power grid interconnection projects, a risk assessment index system including 10 indexes such as national relation, public participation, and available transmission capacity is constructed. Then, in order to overcome the shortcomings of traditional risk assessment methods, this paper proposes a risk assessment method combined with risk theory and probabilistic model, which can not only consider the uncertainties but also integrate the probability of accidents with consequences. Therefore, it can effectively assess the transnational power grid interconnection projects under diversified risks. In addition, in order to further magnify the impact of higher risks on such projects, a method combining traditional weighting method with the variable weight theory is proposed. The study in this paper provides certain guidance and decision-making support for different participants such as the government power sector, construction enterprises, and investment enterprises when they launch on sustainable development of the transnational project business, which have obvious practical significance.

scholarly journals Analysis of the Impact of Climate Change on National Vulnerability Based on Fuzzy Comprehensive Evaluation

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Jia-Ming Zhu ◽  
Yang Chen ◽  
Su Zhang
Keyword(s):  
Climate Change ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Analysis Model ◽  
Comprehensive Evaluation Method ◽  
Impact Of Climate Change ◽  
The Impact ◽  
Vulnerability Score ◽  
Relevant Factors

Climate change has become one of the major threats to global security. On the impact of climate change on national vulnerability, the researchers firstly select relevant factors and data and analyze the principal components to determine the weight of climate change on vulnerability so as to analyze the impact of climate change on national vulnerability. Secondly, based on the influencing factors, we obtain the national vulnerability score through the fuzzy comprehensive evaluation method, delineate the impact scope according to the score, and predict climate change by means of regression analysis and time series analysis. Finally, according to the characteristics of cities and continents, the model is revised, a PSR model and a cluster analysis model are established, and the prediction accuracy is improved.

Probability Assessment Method for Bearing Capacity of Existing RC Bridge

2011 ◽  
Vol 243-249 ◽  
pp. 1743-1749
Author(s):  
Lei Yan ◽  
Ying Zhao Lü
Keyword(s):  
Bearing Capacity ◽  
Reliability Index ◽  
Evaluation Method ◽  
Probability Model ◽  
Highway Bridges ◽  
Assessment Method ◽  
Probability Assessment ◽  
Action Effect ◽  
Beam Bridge ◽  
Assessment Result

The capacity of existing RC bridge could decay slowly when exposed to the aggressive environments. In this paper, the probability assessment method was presented. And the probability model of dead effect and vehicle action effect was established. The classification principle of bearing capacity was presented on the basis of reliability index; furthermore, the evaluation method was presented by a lot of calculation about the reliability index and the ratio of vehicle action effect to dead effect. An existing RC beam bridge with 34 years was evaluated; the technology condition is third class according to code for maintenance of highway bridges and culvers (JTG H11-2004). The checking index is 0.947 and the assessment result is also third grade. Comparing of the results indicated that the method is practical and convenient.

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