International freedom of the air(traffic rights)is a key resource for airlines to carry out international air transport business.An efficient and reasonable traffic right resource allocation within a country between a...International freedom of the air(traffic rights)is a key resource for airlines to carry out international air transport business.An efficient and reasonable traffic right resource allocation within a country between airlines can affect the quality of a country’s participation in international air transport.In this paper,a multi-objective mixed-integer programming model for traffic rights resource allocation is developed to minimize passenger travel mileages and maximize the number of traffic rights resources allocated to hub airports and competitive carriers.A hybrid heuristic algorithm combining the genetic algorithm and the variable neighborhood search is devised to solve the model.The results show that the optimal allocation scheme aligns with the principle of fairness,indicating that the proposed model can play a certain guiding role in and provide an innovative perspective on traffic rights resource allocation in various countries.展开更多
Objective:Healthcare workers,as a high-stress professional group,face long-term high intensity workloads and complex medical environments,resulting in increasingly prominent mental health issues.In particular,the wide...Objective:Healthcare workers,as a high-stress professional group,face long-term high intensity workloads and complex medical environments,resulting in increasingly prominent mental health issues.In particular,the widespread presence of anxiety symptoms and somatic pain has become a major factor affecting both the quality of care and the career development of healthcare workers.This study aims to investigate the mediating and moderating roles of psychological resilience and sleep in the relationship between somatic pain and anxiety among healthcare workers.Methods:A cross-sectional questionnaire survey was conducted among 1661 healthcare workers.The instruments used included the Generalized Anxiety Disorder-7(GAD-7),item 3 from the Patient Health Questionnaire-9(PHQ-9),the 10-item Connor-Davidson Resilience Scale(CD-RISC-10)for psychological resilience,and the Visual Analogue Scale(VAS)for assessing anxiety,sleep disturbance,psychological resilience,and somatic pain.Results:The detection rate of anxiety symptoms among healthcare workers was 38.95%.Psychological resilience was significantly negatively correlated with anxiety symptoms(r=−0.451,P<0.01),sleep disturbance(r=−0.313,P<0.01),and somatic pain(r=−0.214,P<0.01).Moreover,psychological resilience partially mediated the relationship between somatic pain and anxiety(β=−0.103,P<0.01),and sleep quality moderated the latter part of the mediation model(“somatic pain-psychological resilience-anxiety”).Conclusion:Under high-intensity workloads,healthcare workers generally experience severe anxiety symptoms.Psychological resilience plays an important protective mediating role in their mental health,and sleep quality serves as a moderator in this relationship.Enhancing healthcare workers’psychological resilience and improving their sleep may promote both their physical and mental well-being.展开更多
With the gradual acceleration of urbanization speed and continuous improvements of agricultural productivity, the number of migrant workers is increasing. The living conditions of this group in cities determine the qu...With the gradual acceleration of urbanization speed and continuous improvements of agricultural productivity, the number of migrant workers is increasing. The living conditions of this group in cities determine the quality of urbanization in China, and are of great and far-reaching significance to Chinese construction of comprehensive well-off society. This study took the migrant workers in Heilongjiang Province as the research object, and took the representative new-generation migrant workers as the respondent to have a comprehensive analysis of the employment status. The study focused on these aspects, such as nature information, employment selection, employment quality, and social security, etc. Finally, it provided valuable ideas and methods on the reasonable solutions of the employment problems of the migrant workers to better increase farmers＇ income and improve their living qualities.展开更多
Groundwater is an important water resource in Haihe River basin,North China.The number of aquifers that appear to be declining under conditions of groundwater overdraft is increasing.To effectively manage the water re...Groundwater is an important water resource in Haihe River basin,North China.The number of aquifers that appear to be declining under conditions of groundwater overdraft is increasing.To effectively manage the water resources,there is a strong scientific need to analyze the net use of this important water resource and to quantify the water rights allocation for improved understanding of the future water展开更多
Objective:To identify the types and causes of eye injury in industrial workers. Methods: A cross sectional study of the pattern of ocular injuries in Delta state of Nigeria was carried out over 3 months. Five hundred ...Objective:To identify the types and causes of eye injury in industrial workers. Methods: A cross sectional study of the pattern of ocular injuries in Delta state of Nigeria was carried out over 3 months. Five hundred workers were interviewed and examined using the Snellen's chart, pen-torch, direct ophthalmoscope, magnifying loupe and the Perkin's hand-held applanation tonometer. Results: All the 500 workers were males. One hundred and twenty-three workers (24.6%) reported a history of ocular injury at work. The most common causative agents were sand dust, 53 workers (25.1%); cake dust, 27 workers (12.8%) and chemicals, 32 workers (15.1%). The main types of ocular injury were corneal/ conjunctival foreign bodies, 79 workers (64.2%); burns, 35 workers (28.5%) and blunt injury, 9 workers (7.3%). Only 36 (7.2%) workers used protective eye devices at work. Thirteen workers (2.6%) developed monocular blindness from ocular injury. Conclusion: Ocular injury at work is common and few workers wear protective devices at work in industries in Delta state, Nigeria. Industrial workers should have regular eye services and wear eye safety devices at work.展开更多
How to protect the disabled children’s rights and interests legally has been a very serious,urgent realistic subject.Today,the problems in the protection of the disabled children’s rights and interests become obviou...How to protect the disabled children’s rights and interests legally has been a very serious,urgent realistic subject.Today,the problems in the protection of the disabled children’s rights and interests become obvious,mainly including that the right to exist is not protected,the right to education is changed,the right to development is not implemented,the right to participate is not respected,and the right to be protected is not safeguarded,etc.As the legal position of the protection of the disabled children’s rights and interests is absent,it is imperative to choose the legal support ways for the protection of the disabled children’s rights and interests.展开更多
基金supported by the National Natural Science Foundation of Chinathe Civil Aviation Administration of China (U2333206).
文摘International freedom of the air(traffic rights)is a key resource for airlines to carry out international air transport business.An efficient and reasonable traffic right resource allocation within a country between airlines can affect the quality of a country’s participation in international air transport.In this paper,a multi-objective mixed-integer programming model for traffic rights resource allocation is developed to minimize passenger travel mileages and maximize the number of traffic rights resources allocated to hub airports and competitive carriers.A hybrid heuristic algorithm combining the genetic algorithm and the variable neighborhood search is devised to solve the model.The results show that the optimal allocation scheme aligns with the principle of fairness,indicating that the proposed model can play a certain guiding role in and provide an innovative perspective on traffic rights resource allocation in various countries.
基金supported by the Natural Science Foundation of Hunan Province,China(2023JJ60076)。
文摘Objective:Healthcare workers,as a high-stress professional group,face long-term high intensity workloads and complex medical environments,resulting in increasingly prominent mental health issues.In particular,the widespread presence of anxiety symptoms and somatic pain has become a major factor affecting both the quality of care and the career development of healthcare workers.This study aims to investigate the mediating and moderating roles of psychological resilience and sleep in the relationship between somatic pain and anxiety among healthcare workers.Methods:A cross-sectional questionnaire survey was conducted among 1661 healthcare workers.The instruments used included the Generalized Anxiety Disorder-7(GAD-7),item 3 from the Patient Health Questionnaire-9(PHQ-9),the 10-item Connor-Davidson Resilience Scale(CD-RISC-10)for psychological resilience,and the Visual Analogue Scale(VAS)for assessing anxiety,sleep disturbance,psychological resilience,and somatic pain.Results:The detection rate of anxiety symptoms among healthcare workers was 38.95%.Psychological resilience was significantly negatively correlated with anxiety symptoms(r=−0.451,P<0.01),sleep disturbance(r=−0.313,P<0.01),and somatic pain(r=−0.214,P<0.01).Moreover,psychological resilience partially mediated the relationship between somatic pain and anxiety(β=−0.103,P<0.01),and sleep quality moderated the latter part of the mediation model(“somatic pain-psychological resilience-anxiety”).Conclusion:Under high-intensity workloads,healthcare workers generally experience severe anxiety symptoms.Psychological resilience plays an important protective mediating role in their mental health,and sleep quality serves as a moderator in this relationship.Enhancing healthcare workers’psychological resilience and improving their sleep may promote both their physical and mental well-being.
基金Supported by the Social Science Research in Heilongjiang(13B007)the Post-doctoral Scientific Research in Heilongjiang Province(LBH-Q14028)
文摘With the gradual acceleration of urbanization speed and continuous improvements of agricultural productivity, the number of migrant workers is increasing. The living conditions of this group in cities determine the quality of urbanization in China, and are of great and far-reaching significance to Chinese construction of comprehensive well-off society. This study took the migrant workers in Heilongjiang Province as the research object, and took the representative new-generation migrant workers as the respondent to have a comprehensive analysis of the employment status. The study focused on these aspects, such as nature information, employment selection, employment quality, and social security, etc. Finally, it provided valuable ideas and methods on the reasonable solutions of the employment problems of the migrant workers to better increase farmers＇ income and improve their living qualities.
文摘Groundwater is an important water resource in Haihe River basin,North China.The number of aquifers that appear to be declining under conditions of groundwater overdraft is increasing.To effectively manage the water resources,there is a strong scientific need to analyze the net use of this important water resource and to quantify the water rights allocation for improved understanding of the future water
文摘Objective:To identify the types and causes of eye injury in industrial workers. Methods: A cross sectional study of the pattern of ocular injuries in Delta state of Nigeria was carried out over 3 months. Five hundred workers were interviewed and examined using the Snellen's chart, pen-torch, direct ophthalmoscope, magnifying loupe and the Perkin's hand-held applanation tonometer. Results: All the 500 workers were males. One hundred and twenty-three workers (24.6%) reported a history of ocular injury at work. The most common causative agents were sand dust, 53 workers (25.1%); cake dust, 27 workers (12.8%) and chemicals, 32 workers (15.1%). The main types of ocular injury were corneal/ conjunctival foreign bodies, 79 workers (64.2%); burns, 35 workers (28.5%) and blunt injury, 9 workers (7.3%). Only 36 (7.2%) workers used protective eye devices at work. Thirteen workers (2.6%) developed monocular blindness from ocular injury. Conclusion: Ocular injury at work is common and few workers wear protective devices at work in industries in Delta state, Nigeria. Industrial workers should have regular eye services and wear eye safety devices at work.
基金The Philosophy and Social Science Research Fund Project for Institutions of Higher Learning in Jiangsu Province:Research on the Right of the Disabled Children to Social Participation-Jiangsu Province Is for Example(No.2014SJB296)
文摘How to protect the disabled children’s rights and interests legally has been a very serious,urgent realistic subject.Today,the problems in the protection of the disabled children’s rights and interests become obvious,mainly including that the right to exist is not protected,the right to education is changed,the right to development is not implemented,the right to participate is not respected,and the right to be protected is not safeguarded,etc.As the legal position of the protection of the disabled children’s rights and interests is absent,it is imperative to choose the legal support ways for the protection of the disabled children’s rights and interests.
