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In order to control the key point of accidents during bridge construction, a number of major risk factors are recognized from the point of the insecure elements of human beings and the insecure status of objects, and a risk assessment index system of bridge construction stage is created based on these risk factors; so given the uncertainty and fuzziness of the risk factors, the risk assessment of...
The most fundamental means of maintaining mechanical safety is to systematically carry out safety design and analysis in the mechanical design process. The fuzzy comprehensive evaluation method is to take the advantages of the level analytic hierarchy process and fuzzy comprehensive evaluation method. Firstly, the evaluation index system is divided into ladder level structure, calculated the index...
Artificial creatures need an intelligent behavior selection method to be used as an intermediate interface for natural interaction with users. For this purpose, the mechanisms of thought were proposed based on the probability and the degree of consideration. However, they were time-consuming when applying to an intelligent artificial creature with large numbers of wills, contexts and behaviors. Moreover,...
The extension method based on entropy weight is a new safety evaluation method. Entropy weight, which is an objective weight, was ascertained by entropy theory. As a result, the subjectivity in ascertaining the weights of more factors in lower hierarchy was avoided. The comprehensive correlative degree was taken as the evaluation criteria in this method. Therefore the subjectivity of evaluation model...
This paper firstly gives a construction safety evaluation system based on previously researches. Secondly, it gives the concept of intuitionistic fuzzy sets concisely. Then, intuitionistic fuzzy TOPSIS method is introduced. Finally, a numerical example for safety evaluation is given to illustrate application of the method.
Coal mines safety condition decides the economic condition of the regional development on one hand, more importantly the safety of employees working for mines on the other. This article has introduced a scientific system to evaluate the safety level of coal mine based on AHP so as to give out significant information for the managers of coal mine to make and implement corresponding polices concerning...
Ecological Security Assessment is a new field in Sustainable Development study. In order to curb the deterioration of the ecological environment, we should conduct timely researches on the comprehensive evaluation of ecological security, which is recognized as the most powerful method to protect the regional economy effectively. Based on the sequence data of 1987, 2000 and 2005, the study takes Hebei...
This article presents the results of a study on including human factors in assessment of the level of danger involved in a robot operation. A dynamic risk assessment method, which considers all effective factors in a collision, is essential for planning and control of the human-safe robots. In this regard, the visibility of the robot in the human eyes can significantly effect the probability of collision...
Based on various factors which influence on aviation maintenance safety, the multi-index system of aviation maintenance safety was constructed and the quantitive rule of the index was ascertained, the synthetical sequencing model of aviation maintenance multi-index safety was established in the employ of principal component analysis method. An example of the safety of 3 units of aviation maintenance...
In this paper a reactive control strategy intended for human-robot interactions (HRI) is presented. A conventional reactive control scheme is reviewed first. This is followed by the introduction of a new prediction-based reactive control strategy. The new control strategy considers foreseeable dangerous events by predicting human motion using artificial neural networks, based on the previous pattern...
The research of safety related organizational factors is hampered for two reasons: 1, accident retrospect analysis is always single-direction, it is hard to make conclusion what is the effect of some organizational factors even some accident analysis find they are safety related. 2, latent failure, as a core concept in the field of organizational safety, still has not been studied at the level of...
This paper aimed to develop a quantitative and objective method to analyze and evaluate human factors in aviation maintenance process. Firstly a detailed classification and causing analysis on human errors in aviation maintenance was carried out basing on SHEL and Reason Model; then an integrated evaluation solution was proposed out by using fuzzy and AHP method together. Then the solution was applied...
This paper presents a human body modeling technique, and a safe planning strategy using danger evaluation for robotic manipulators intended for interactions with humans. Such interactive robots are required to have minimum footprint on the shop floor and to be able to work in constrained areas while ensuring the safety of the humans. A new approach is proposed for generating an efficient representation...
Coal mine safety evaluation analyses mine's existent dangerous and harmful factors, and judges mine's potential risks. The evaluation result is propitious to guard against accidents and make management decisions. This paper analyses all kinds of influence elements on coal mine safety, constructs evaluation indexes system, measures weights using AHP, and applies dynamic fuzzy theory in mine safety...
Safety is a major concern in many complex robotized systems especially when the task implies collaboration between human and robot with the workspace sharing. In this research a theoretical representation of the integrated safety monitoring system is introduced. The monitoring system is modeled as a separated unit which decision making mechanism is based on the safety expert system (SES) data analysis...
On base of current research of the quantitative assessment of competency for Chinese seafarers, aiming at the weakness of fuzzy comprehensive assessment, the rough set theory is introduced into the quantitative studies of competency for Chinese seafarers. Based on the discrete decision table and rough membership degree, some useful data mining results are given: the degree of rough membership is an...
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