Objective evaluation model of telephone transmission performance for fundamental transmission factors

1986 ◽  
Vol 69 (2) ◽  
pp. 18-27 ◽  
Author(s):  
Naotoshi Osaka ◽  
Kazuhiko Kakehi
Keyword(s):  
Evaluation Model ◽  
Objective Evaluation ◽  
Transmission Performance ◽  
Transmission Factors

scholarly journals A multi-objective evaluation method based on connection numbers theory of hazardous chemical accidents emergency medical rescue capability

2019 ◽  
Vol 27 (3) ◽  
pp. 125-133
Author(s):  
Yapeng Wang ◽  
Jinguo Zhang ◽  
Yundou Wang ◽  
Xiaowen Xiong ◽  
Xin Zhao
Keyword(s):  
Index System ◽  
Evaluation Method ◽  
Evaluation Model ◽  
Objective Evaluation ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Chemical Accidents ◽  
Hazardous Chemical ◽  
Emergency Medical ◽  
Partial Connection

Background: An objective, comprehensive and scientific evaluation of emergency medical rescue capability (EMRC) is of great realistic significance in assisting the health administrative department to grasp the overall response capability of all emergency medical rescue teams, enabling each team to have a full understanding of its own strengths and weakness and improve itself accordingly. At present, the research on the evaluation of EMRC in Hazardous Chemicals Accidents (HCA) is not systematic and in-depth, and the existing research results also have some shortcomings, such as, the lack of strong theoretical support for the evaluation index system, the relatively single function of evaluation methods, and so on. Objectives: The objective of this article is to research the evaluation index system and a new evaluation method of EMRC in HCA to overcome the above shortcomings. Methods: It establishes an emergency medical rescue capability model by employing the competency model and then constructs the evaluation index system on the basis of the analysis of all the factors of emergency medical rescue capability in hazardous chemical accidents and sets up an evaluation model based on the theory of connection numbers and partial connection numbers. It determines the competence ranking of several emergency medical rescue teams and the competence state of an individual emergency medical rescue team by calculating the connection principal value, and it also predicts how the emergency medical rescue capability will develop based on the values of partial connection numbers. Results: The example shows that the calculation process of this model is relatively simple, and its assessment results are objective and authentic, and moreover, its multi-functions can make up for the deficiency of the simplified function of other evaluation models. Conclusion: This method is scientific and rational to some extent and can provide reference for evaluation problems of the same kind.

scholarly journals Research on the Evaluation Model of a Smart Grid Development Level Based on Differentiation of Development Demand

2018 ◽  
Vol 10 (11) ◽  
pp. 4047 ◽  
Author(s):  
Jinchao Li ◽  
Tianzhi Li ◽  
Liu Han
Keyword(s):  
Smart Grid ◽  
Smart Grids ◽  
Evaluation Model ◽  
Objective Evaluation ◽  
Entropy Method ◽  
Base Layer ◽  
Regional Differentiation ◽  
Base Level ◽  
Development Level ◽  
The Impact

In order to eliminate the impact of inter-regional differentiation of development demand on the objective evaluation of the development level of smart grid, this paper establishes the evaluation model of weight modification, transmission mechanism and combination of subjective and objective weights. Firstly, the Analytic Hierarchy Process method is used to calculate the weights of evaluation indices of effect layer and then the indices of development demand are used to modify the weights of them. The association analysis and the correlation coefficient are used to establish the weights conduction coefficient between the effect level and the base level. Then the subjective weights of the indices of the base layer are calculated. The objective weights of the indices of the base layer are obtained by using the entropy method. The subjective weights of the base layer and the objective weights obtained by the entropy method are averagely calculated, and the comprehensive weights of the evaluation indices of the base layer are obtained. Then each index is scored according to the weights and index values. Finally, the model is used to quantitatively inspect the level of development of smart grid in specific regions and make a horizontal comparison, which provides a useful reference for the development of smart grids. The relevant examples verify the correctness and validity of the model.

scholarly journals An Evaluation Method of Mode Switching Quality for Double-Belt Continuously Variable Transmission

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Lanchun Zhang ◽  
Zhongwei Zhu ◽  
Bin Huang ◽  
Tianbo Wang
Keyword(s):  
Evaluation Method ◽  
Evaluation Model ◽  
Subjective Evaluation ◽  
Objective Evaluation ◽  
Transmission Efficiency ◽  
Continuously Variable Transmission ◽  
Mode Switching ◽  
Evaluation Indexes ◽  
Variable Transmission ◽  
Driver’S Intention

In order to improve the transmission efficiency and carrying capacity of conventional single-belt continuously variable transmission (CVT), one new type of dual-belt CVT is proposed in this paper. Under the situation that this new dual-belt CVT should be switched between single- and dual-belt modes frequently according to driver’s intention and road conditions, so five objective evaluation indexes of mode switching quality for the dual-belt CVT are proposed, considering the aspects of vehicle power, comfort, and transmission durability comprehensively. Then, the objective evaluation model of mode switching quality is established by the BP neural network optimized by the genetic algorithm. It is found that the prediction results are consistent with the subjective evaluation. After analyzing the influence of the selected five evaluation indexes on the prediction results, it is obvious that these five evaluation indexes of mode switching quality for dual-belt CVT are reasonable.

Wine Evaluation Modeling Based on Lasso and Support Vector Regression

2017 ◽  
Vol 21 (6) ◽  
pp. 998-1008
Author(s):  
Yanyun Yao ◽  
Bing Xu ◽  
Jinghui He ◽  
◽  
Keyword(s):  
Support Vector Regression ◽  
Nonlinear Effect ◽  
Evaluation System ◽  
Evaluation Model ◽  
Digital Simulation ◽  
Objective Evaluation ◽  
Support Vector ◽  
Lasso Regression ◽  
Wine Quality ◽  
Training Samples

Wine consumption is gaining popularity, and significant attention has been given to its quality. In the present paper, an objective evaluation model along with a reliability test via Lasso and nonlinear effect test via support vector regression (SVR) is proposed. The digital simulation is finished with the experimental data obtained from the A problem of CUMCM-2012 (China Undergraduate Mathematical Contest in Modeling in 2012). The results of Lasso regression show that the wine quality mainly depends upon eight physicochemical indicators. Further research results of SVR imply that with several training samples, a good evaluation can be realized, denoting that our model based on Lasso SVR can significantly reduce the costs of measurement and appraisal. Compared to other relevant articles, this paper builds an objective and credible wine evaluation system where the physicochemical indicators and the latent nonlinear effect are considered. Moreover, the evaluation costs are taken into account.

Study on Construction Order of Logistics Park Based on Combined Model of Analytic Hierarchy Process and Gray Comprehensive Evaluation

2011 ◽  
Vol 97-98 ◽  
pp. 644-647 ◽  
Author(s):  
Yang Yang ◽  
Tao Pu ◽  
Kun Ying Li
Keyword(s):  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Objective Evaluation ◽  
Combined Model ◽  
Analytic Hierarchy ◽  
Logistics Park ◽  
Park Planning ◽  
Comprehensive Evaluation Model ◽  
Priority Order ◽  
Hierarchy Process

Priority order decision of logistics parks construction project is an important issue in the process of logistics park planning. It needs to synthesize various factors, such as, politics, economy, society and environment, etc. Because there are some grey relationships among these factors, construction of the order of questions can be look on as a grey multi-objective evaluation. This paper brings forward a new priority decision method named hierarchy -gray comprehensive evaluation model to evaluate the building order of the logistics parks. An example is used to elaborate how to use this model; meanwhile, the method is proved more scientific and reliable.

IBperf: A Testing and Evaluation Model of IB Datacenter Transmission Control

2012 ◽  
Vol 239-240 ◽  
pp. 873-878
Author(s):  
Zi Wen Zhang ◽  
Zhi Gang Sun ◽  
Xi Cheng Lu
Keyword(s):  
Congestion Control ◽  
Network Performance ◽  
Evaluation Model ◽  
Control Mechanisms ◽  
Transmission Performance ◽  
Transmission Control ◽  
Central Controller ◽  
Transmission Control Protocols ◽  
Evaluation Platform ◽  
Testing And Evaluation

Datacenter is the important infrastructure to provide resource and service in Internet. Due to the widely observed congestion, all kinds of transmission control mechanisms have been proposed to satisfy diverse network performance demands. Based on InfiniBand (IB) which is widely applied for datacenter construction, this paper proposed a generic testing and evaluation platform IBperf to verify transmission control protocols. We designed a central controller to instruct distributed clients to generate different communication patterns and execute commands of the protocol. The transmission performance can be derived based on the captured packets and digest. In the experiment, IB congestion control (CC) was evaluated through IBperf on our real IB platform. IBperf showed the improvement of fairness and throughput with low overhead based on CC mechanism. It proved IBperf to be an effective tool for the evaluation of IB datacenter.

Research on the Diversified Evaluation Index System and Evaluation Model of Physical Education Teaching in Colleges and Universities

2017 ◽  
Vol 14 (1) ◽  
pp. 99-103 ◽  
Author(s):  
Yongfeng Zhao
Keyword(s):  
Physical Education ◽  
Index System ◽  
Teaching And Learning ◽  
Evaluation Model ◽  
Objective Evaluation ◽  
Colleges And Universities ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Fuzzy Evaluation ◽  
Evaluation Indexes

Physical education teaching in colleges and universities is a complicated project for systematic optimization with multiple factors. As a vital approach to enhance the quality of physical education teaching in colleges and universities, it is of great importance to have a scientific, accurate and objective evaluation of physical education teaching. The thesis, on the one hand, analyzes the existent problems during the evaluation course of physical education teaching in colleges and universities; and on the other hand, discusses the related improved measures on the aforementioned basis. In order to update the evaluation index system of physical education teaching in colleges and universities, the thesis, based on the multiple intelligence theory, constructs an evaluation index system of physical education from all-round aspects, i.e., teaching step, teaching and learning step as well as managing step. Furthermore, according to the weight of various evaluation indexes on the foundation of AHP method, plus with the involvement of fuzzy evaluation information, the thesis puts forward with a comprehensive fuzzy evaluation model of physical education teaching in colleges and universities. This model serves as an attempt to effectively evaluate physical education teaching, the validity of which is proved in the case analysis part.

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