Papers by Keyword: Relationship Analysis

Abstract: The attitude maneuver duration is an important constraint for an agile Earth observation satellite between its imaging tasks. A method for calculating the attitude maneuver duration from pointing to the last observation target to the next one is proposed. Based on this method, the relationships between the observation times and the attitude changing duration are discussed. The analysis results show that the difference of the observation time and the observation target causes the difference of the attitude maneuver duration between the last and next observation tasks. An attitude maneuver strategy example for an agile satellite in one-orbit strips-jointed observation mode is given. The results of the relationships analysis validate the effectiveness of the attitude maneuver strategy.

Abstract: Urban water supply system and the people’s daily life are closely related. In addition to the urban population, the structure and the scale of economic, the factors affecting the requirement of urban water supply included the meteorological factors such as temperature. Based on Pearson product-moment correlation coefficient, we analyze the relationship between urban water supply and temperature with the actual data of Beijing from 2008 year to 2009 year, and get regression fitting function with multiple regression analysis method. The analysis result can provide the basis for scientific management and accurately predict urban water supply.

Abstract: The construction safety supervision errors can lead to unsafe behavior; further affect the working conditions of workers and result in accidents at last. The probabilities of data are provided by statistical analysis between the different types of neighborhood-level factors by the independence of the chi-square test. The relationship analysis of the independence between the behavioral factors has been performed in order to find the non-independent factors. Among the Human Factors Analysis and Classification System (HFACS), the impact of the high-level factors on the bottom level is determined. Based on the data, the work path of various factors in the HFACS frame is confirmed and it can be a reference for the development of the preventive measures.