Yishui County Down Product Factory specializes in producing washed duck down and down products. It was originally set up by the Ministry of Commerce. Since it was founded in October 1987, the factory’s profits have g...Yishui County Down Product Factory specializes in producing washed duck down and down products. It was originally set up by the Ministry of Commerce. Since it was founded in October 1987, the factory’s profits have grown year by year. In 1993, it become a Sino-American joint venture with an annual production capacity of duck feathers of 350, 000 kg and down products of 300, 000 pieces, as well as fixed展开更多
The dose-response relationship for asbestos exposure in a chrysotile product factory was studied. The past gravimetric dust concentration values, obtained from different worksites, were converted into fiber concentrat...The dose-response relationship for asbestos exposure in a chrysotile product factory was studied. The past gravimetric dust concentration values, obtained from different worksites, were converted into fiber concentration values according to conversion factors that were worked out by simultaneous sampling in this study. The conversions were made so that exposure could be expressed in fiber-years (f-yr). Asbestosis was diagnosed on the basis of chest radiographs and occupational histories. Cumulative dust exposure (f-yr) was calculated up to the date of diagnosis for asbestosis patients, and up to September 1982 for the remaining workers. A dose-response relationship expressed as fiber-years exposed vs cumulative prevalence of asbestosis was established by the life table method on the basis of these data. Predicted 3 and 1% prevalence of asbestosis corresponded to 43 and 22 f-yr exposure, respectively. Considering that a worker can work for 35 years, these doses are commensurate with dust concentrations of 1.22 and 0.63 f/ml, respectively. It is recommended that 1 f/ml be taken as the maximum allowable concentration of airborne asbestos dust for the workplace with an anticipated prevalence of about 2% asbestosis after 35 years of exposure. 1990 Academic Press, Inc.展开更多
Income inequality is widespread in human society and has important implications for human behavior.People’s perception of the environment bridges income inequality and individual behavioral decisions.Existing researc...Income inequality is widespread in human society and has important implications for human behavior.People’s perception of the environment bridges income inequality and individual behavioral decisions.Existing research suggests that social income inequality is usually biased,either overestimated or underestimated.However,such phenomena have not been fully explored with quantitive prove,especially in the working environment based on performance data of actual production.In fact,the correct perception of people is the basis of a fair environment for their production decisions.Thus,the perception bias may weaken the adaptability and competitiveness of a company in the market.This paper first confirms the prevalence of individual perception bias of income inequality within the working environment based on actual production data.Our results show that people tend to underestimate income inequity around them,and this underestimation grows with the real unfairness of the working environment.Further,this paper proposes a network generation-based framework with a three-layer structure to correct perception bias using a cooperative network reengineering approach.Within the framework,a homophily-based generative network model is proposed as the key algorithm.Our simulation results show that our proposed framework effectively reduces individuals’perception bias of income inequality.展开更多
文摘Yishui County Down Product Factory specializes in producing washed duck down and down products. It was originally set up by the Ministry of Commerce. Since it was founded in October 1987, the factory’s profits have grown year by year. In 1993, it become a Sino-American joint venture with an annual production capacity of duck feathers of 350, 000 kg and down products of 300, 000 pieces, as well as fixed
文摘The dose-response relationship for asbestos exposure in a chrysotile product factory was studied. The past gravimetric dust concentration values, obtained from different worksites, were converted into fiber concentration values according to conversion factors that were worked out by simultaneous sampling in this study. The conversions were made so that exposure could be expressed in fiber-years (f-yr). Asbestosis was diagnosed on the basis of chest radiographs and occupational histories. Cumulative dust exposure (f-yr) was calculated up to the date of diagnosis for asbestosis patients, and up to September 1982 for the remaining workers. A dose-response relationship expressed as fiber-years exposed vs cumulative prevalence of asbestosis was established by the life table method on the basis of these data. Predicted 3 and 1% prevalence of asbestosis corresponded to 43 and 22 f-yr exposure, respectively. Considering that a worker can work for 35 years, these doses are commensurate with dust concentrations of 1.22 and 0.63 f/ml, respectively. It is recommended that 1 f/ml be taken as the maximum allowable concentration of airborne asbestos dust for the workplace with an anticipated prevalence of about 2% asbestosis after 35 years of exposure. 1990 Academic Press, Inc.
基金supported by the National Key Research and Development Program of China(No.2021YFF0900800).
文摘Income inequality is widespread in human society and has important implications for human behavior.People’s perception of the environment bridges income inequality and individual behavioral decisions.Existing research suggests that social income inequality is usually biased,either overestimated or underestimated.However,such phenomena have not been fully explored with quantitive prove,especially in the working environment based on performance data of actual production.In fact,the correct perception of people is the basis of a fair environment for their production decisions.Thus,the perception bias may weaken the adaptability and competitiveness of a company in the market.This paper first confirms the prevalence of individual perception bias of income inequality within the working environment based on actual production data.Our results show that people tend to underestimate income inequity around them,and this underestimation grows with the real unfairness of the working environment.Further,this paper proposes a network generation-based framework with a three-layer structure to correct perception bias using a cooperative network reengineering approach.Within the framework,a homophily-based generative network model is proposed as the key algorithm.Our simulation results show that our proposed framework effectively reduces individuals’perception bias of income inequality.
