Background: There are various health problems in rotating shift workers. There have been few studies on the associations of male climacteric symptoms with duration of working and lifestyle. Objective: The aim of this ...Background: There are various health problems in rotating shift workers. There have been few studies on the associations of male climacteric symptoms with duration of working and lifestyle. Objective: The aim of this study was to determine the differences in male climacteric symptoms depending on the number of working years and to determine whether lifestyle habits differ depending on the number of working years in rotating shift workers. Methods: We collected participant’s data from the manufacturing companies in Japan during the period from March to May in 2017. We conducted a self-administered questionnaire survey in 1561 male rotating night shift workers. Male climacteric symptoms were evaluated by using the Aging Males’ Symptoms (AMS) rating scale. We analyzed 636 rotating shift workers aged over 40 years old whose all AMS data was collected. Results: A significant difference in psychological AMS score was found between men who had worked for 10 - 19 years (9.4 ± 3.9) and men who had worked for more than 40 years (7.6 ± 3.0) (p = 0.011). Sexual functional AMS score significantly differed depending on the number of working years (less than 10 years: 8.1 ± 3.9, 10 - 19 years: 9.8 ± 4.1, 20 - 29 years: 7.9 ± 3.3, 30 - 39 years: 9.3 ± 3.5, more than 40 years: 9.3 ± 3.5) (p < 0.001). The proportion of workers with a balanced meal intake was significantly lower in men who had worked for less than 10 years and the proportions of such workers were significantly higher in men who had worked for 10 - 19 years and for more than 40 years. The proportions of men who did not drink alcohol were high in men who had worked for less than 10 years and 20 - 29 years and low in men who had worked more than 30 years. Conclusion: Psychological AMS score and sexual functional AMS score are significantly different among the 5 groups according to the number of working years on rotating shift. In addition, well-balanced diet on day shift and reduction of alcohol drinking is a related-factor for long-term rotating night shift workers.展开更多
Aims:The aim of this article is to explore the relation of sleep quality,anxiety status,fatigue level and psychological resilience among rotating‑shift nurses,thus,to propose solutions and promote physical and psychol...Aims:The aim of this article is to explore the relation of sleep quality,anxiety status,fatigue level and psychological resilience among rotating‑shift nurses,thus,to propose solutions and promote physical and psychological health of shift nurses.Methods:The cross‑sectional survey was performed on 263 clinical nurses recruited from three tertiary hospitals of Xinxiang City,Henan Province,China from October 2017 to June 2018.The questionnaire survey was conducted using Pittsburgh Sleep Quality Index(PSQI)for measuring nurses’sleep quality,connor‑davidson resilience scale(CD‑RISC)for measuring their psychological resilience,self‑rating anxiety scale(SAS)for measuring their anxiety status,and Fatigue‑14 Scale for measuring their fatigue.The relationship among above indicators were analysed using Pearson correlation analysis.The mediating effect of psychological resilience on the process of sleep quality impacting anxiety and fatigue was analyzed using Wen’s causual steps method and linear regression.Results:The mean CD‑RISC score of shift nurses was 57.76±11.90,which indicated that resilience level was at a medium level.The mean of PSQI,SAS and total fatigue score was(7.53±2.83),(50.56±9.57)and(7.81±9.42),respectively.Resilience could negatively predict the anxiety state(β=−0.366,P<0.01)and fatigue(β=−0.197,P<0.01).Sleep quality could positively predict anxiety(β=0.395,P<0.01)and fatigue level(β=0.495,P<0.01)for shift nurses.The mediating effects of resilience upon sleep quality and anxiety or fatigue was 0.044 and 0.026,respectively.Conclusion:The resilience could fuel sleep quality and reduce the occurrence of negative emotion and fatigue among shift nurses.展开更多
The paper aims to schedule check-in staff with hierarchical skills as well as day and night shifts in weekly rotation.That shift ensures staff work at day in a week and at night for the next week.The existing approach...The paper aims to schedule check-in staff with hierarchical skills as well as day and night shifts in weekly rotation.That shift ensures staff work at day in a week and at night for the next week.The existing approaches do not deal with the shift constraint.To address this,the proposed algorithm firstly guarantees the day and night shifts by designing a data copy tactic,and then introduces two algorithms to generate staff assignment in a polynomial time.The first algorithm is to yield an initial solution efficiently,whereas the second incrementally updates that solution to cut off working hours.The key idea of the two algorithms is to utilize a block Gibbs sampling with replacement to simultaneously exchange multiple staff assignment.Experimental results indicate that the proposed algorithm reduces at least 15.6 total working hours than the baselines.展开更多
Rotation symmetric function was presented by Pieprzyk. The algebraic configuration of rotation symmetric（RotS） function is special. For a Rots n variables function f（x1, x2, …, xn） we have f（ρn^k （x1, x2, …x...Rotation symmetric function was presented by Pieprzyk. The algebraic configuration of rotation symmetric（RotS） function is special. For a Rots n variables function f（x1, x2, …, xn） we have f（ρn^k （x1, x2, …xn））=f（x1, x2, …, xn） for k=0, 1, …, n-1. In this paper, useing probability method we find that when the parameters of RotS function is under circular translation of indices, its walsh spectrum is invariant. And we prove the result is both sufficient and necessary.展开更多
Purpose To assess the acute effect of moderate and high-intensity exercise on markers of cardio-metabolic function among rotational shift workers.Methods Sedentary men(n=26,age:38±8 years;BMI:32.2±6.0 kg/m^(...Purpose To assess the acute effect of moderate and high-intensity exercise on markers of cardio-metabolic function among rotational shift workers.Methods Sedentary men(n=26,age:38±8 years;BMI:32.2±6.0 kg/m^(2),VO_(2peak)32.6±6.7 mL/kg/min)employed in rotational shift work were recruited and underwent objectively assessed sleep quality(~7 days actigraphy)prior to reporting for laboratory testing.Baseline venous blood was collected to analyse fasted glucose,insulin and inflammatory cytokines tumor necrosis factor(TNF)-α,interleukin(IL)-6 and IL-1 receptor antagonist(IL-1Ra).Participants were randomly allo-cated a 30 min cycling intervention of either high intensity interval training(HIIT):1:4 ratio of 60 s at 100%and 240 s at 50%VO_(2peak),or moderate intensity continuous training(MICT);continuous cycling at 60%VO_(2peak).Fasted venous blood was collected post intervention(0,30,60 min)before subsequent night’s sleep was assessed via actigraphy.Results HIIT(P<0.016)and MICT(P<0.016)significantly increased IL-1Ra immediately and 30 min post exercise.Significantly decreased wake after sleep onset(WASO)were observed following MICT(P<0.05).No significant changes were observed for supplementary sleep variables,insulin sensitivity,IL-6 or TNF-αfor either intervention group(P>0.05).Conclusion High-and moderate-intensity exercise acutely increase anti-inflammatory markers post exercise and MICT significantly reduces sleep fragmentation in rotational shift workers.Results which are associated with improved cardio-metabolic function and indicate the potential validity of exercise as an intervention to offset the hypothesised adverse health effects of rotational shift work.展开更多
文摘Background: There are various health problems in rotating shift workers. There have been few studies on the associations of male climacteric symptoms with duration of working and lifestyle. Objective: The aim of this study was to determine the differences in male climacteric symptoms depending on the number of working years and to determine whether lifestyle habits differ depending on the number of working years in rotating shift workers. Methods: We collected participant’s data from the manufacturing companies in Japan during the period from March to May in 2017. We conducted a self-administered questionnaire survey in 1561 male rotating night shift workers. Male climacteric symptoms were evaluated by using the Aging Males’ Symptoms (AMS) rating scale. We analyzed 636 rotating shift workers aged over 40 years old whose all AMS data was collected. Results: A significant difference in psychological AMS score was found between men who had worked for 10 - 19 years (9.4 ± 3.9) and men who had worked for more than 40 years (7.6 ± 3.0) (p = 0.011). Sexual functional AMS score significantly differed depending on the number of working years (less than 10 years: 8.1 ± 3.9, 10 - 19 years: 9.8 ± 4.1, 20 - 29 years: 7.9 ± 3.3, 30 - 39 years: 9.3 ± 3.5, more than 40 years: 9.3 ± 3.5) (p < 0.001). The proportion of workers with a balanced meal intake was significantly lower in men who had worked for less than 10 years and the proportions of such workers were significantly higher in men who had worked for 10 - 19 years and for more than 40 years. The proportions of men who did not drink alcohol were high in men who had worked for less than 10 years and 20 - 29 years and low in men who had worked more than 30 years. Conclusion: Psychological AMS score and sexual functional AMS score are significantly different among the 5 groups according to the number of working years on rotating shift. In addition, well-balanced diet on day shift and reduction of alcohol drinking is a related-factor for long-term rotating night shift workers.
文摘Aims:The aim of this article is to explore the relation of sleep quality,anxiety status,fatigue level and psychological resilience among rotating‑shift nurses,thus,to propose solutions and promote physical and psychological health of shift nurses.Methods:The cross‑sectional survey was performed on 263 clinical nurses recruited from three tertiary hospitals of Xinxiang City,Henan Province,China from October 2017 to June 2018.The questionnaire survey was conducted using Pittsburgh Sleep Quality Index(PSQI)for measuring nurses’sleep quality,connor‑davidson resilience scale(CD‑RISC)for measuring their psychological resilience,self‑rating anxiety scale(SAS)for measuring their anxiety status,and Fatigue‑14 Scale for measuring their fatigue.The relationship among above indicators were analysed using Pearson correlation analysis.The mediating effect of psychological resilience on the process of sleep quality impacting anxiety and fatigue was analyzed using Wen’s causual steps method and linear regression.Results:The mean CD‑RISC score of shift nurses was 57.76±11.90,which indicated that resilience level was at a medium level.The mean of PSQI,SAS and total fatigue score was(7.53±2.83),(50.56±9.57)and(7.81±9.42),respectively.Resilience could negatively predict the anxiety state(β=−0.366,P<0.01)and fatigue(β=−0.197,P<0.01).Sleep quality could positively predict anxiety(β=0.395,P<0.01)and fatigue level(β=0.495,P<0.01)for shift nurses.The mediating effects of resilience upon sleep quality and anxiety or fatigue was 0.044 and 0.026,respectively.Conclusion:The resilience could fuel sleep quality and reduce the occurrence of negative emotion and fatigue among shift nurses.
基金the Natural Science Foundation of Tianjin(No.18JCYBJC85100)The Civil Aviation Key Technologies R&D Program of China(No.MHRD20140105)+1 种基金the Ministry of Education in China(MOE)Project of Humanities and Social Sciences(No.19YJA630046)the Open Project from Key Laboratory of Artificial Intelligence for Airlines,CAAC.
文摘The paper aims to schedule check-in staff with hierarchical skills as well as day and night shifts in weekly rotation.That shift ensures staff work at day in a week and at night for the next week.The existing approaches do not deal with the shift constraint.To address this,the proposed algorithm firstly guarantees the day and night shifts by designing a data copy tactic,and then introduces two algorithms to generate staff assignment in a polynomial time.The first algorithm is to yield an initial solution efficiently,whereas the second incrementally updates that solution to cut off working hours.The key idea of the two algorithms is to utilize a block Gibbs sampling with replacement to simultaneously exchange multiple staff assignment.Experimental results indicate that the proposed algorithm reduces at least 15.6 total working hours than the baselines.
基金Supported by the National Natural ScienceFoundation of China (90104035)
文摘Rotation symmetric function was presented by Pieprzyk. The algebraic configuration of rotation symmetric（RotS） function is special. For a Rots n variables function f（x1, x2, …, xn） we have f（ρn^k （x1, x2, …xn））=f（x1, x2, …, xn） for k=0, 1, …, n-1. In this paper, useing probability method we find that when the parameters of RotS function is under circular translation of indices, its walsh spectrum is invariant. And we prove the result is both sufficient and necessary.
基金the Australian Government Research Training Program.
文摘Purpose To assess the acute effect of moderate and high-intensity exercise on markers of cardio-metabolic function among rotational shift workers.Methods Sedentary men(n=26,age:38±8 years;BMI:32.2±6.0 kg/m^(2),VO_(2peak)32.6±6.7 mL/kg/min)employed in rotational shift work were recruited and underwent objectively assessed sleep quality(~7 days actigraphy)prior to reporting for laboratory testing.Baseline venous blood was collected to analyse fasted glucose,insulin and inflammatory cytokines tumor necrosis factor(TNF)-α,interleukin(IL)-6 and IL-1 receptor antagonist(IL-1Ra).Participants were randomly allo-cated a 30 min cycling intervention of either high intensity interval training(HIIT):1:4 ratio of 60 s at 100%and 240 s at 50%VO_(2peak),or moderate intensity continuous training(MICT);continuous cycling at 60%VO_(2peak).Fasted venous blood was collected post intervention(0,30,60 min)before subsequent night’s sleep was assessed via actigraphy.Results HIIT(P<0.016)and MICT(P<0.016)significantly increased IL-1Ra immediately and 30 min post exercise.Significantly decreased wake after sleep onset(WASO)were observed following MICT(P<0.05).No significant changes were observed for supplementary sleep variables,insulin sensitivity,IL-6 or TNF-αfor either intervention group(P>0.05).Conclusion High-and moderate-intensity exercise acutely increase anti-inflammatory markers post exercise and MICT significantly reduces sleep fragmentation in rotational shift workers.Results which are associated with improved cardio-metabolic function and indicate the potential validity of exercise as an intervention to offset the hypothesised adverse health effects of rotational shift work.
