Meituan,Dianping and Zhaopin recently and jointly released a report on work and life of new professionals in2018(hereinafter referred to as the Report),showing that as a large number of working-age workers in China ha...Meituan,Dianping and Zhaopin recently and jointly released a report on work and life of new professionals in2018(hereinafter referred to as the Report),showing that as a large number of working-age workers in China have shifted from the manufacturing to the service industries.Under the background of escalating consumption,demand of consumers is becoming more individualized and diversified,and monthly income is rising.展开更多
We have compared 142 adult men and women of various ages, grouped by professional occupation, all the occupations involving local muscular performance. We studied heart reactions and central nervous system reactions t...We have compared 142 adult men and women of various ages, grouped by professional occupation, all the occupations involving local muscular performance. We studied heart reactions and central nervous system reactions to local muscular performance done until fatigue set in. The results suggested that adaptive body changes had a number of shared signs, namely, tachycardia, hypertension, and increased statistical figures of the heart rhythm, which were indicative of tension in central regulatory mechanisms of the heart.展开更多
This study presents a comprehensive theoretical framework to examine how generative artificial intelligence transforms occupational structures through the dynamic interplay of technological capabilities,skill requirem...This study presents a comprehensive theoretical framework to examine how generative artificial intelligence transforms occupational structures through the dynamic interplay of technological capabilities,skill requirements,and societal adaptation.Departing from conventional analyses focused on technical specifications or ethical risks,we develop a novel"technology-skill-society"triad to systematically investigate AIGC's role in occupational evolution.Our analysis reveals three distinct pathways for emerging professions:(1)prompting and optimization-led roles that combine human creative direction with AI execution,(2)evaluation and decision-augmenting positions emphasizing human oversight of AI outputs,and(3)interaction and agent-based occupations redefining human-AI service delivery.Through illustrative analysis of transformed and newly created occupations across multiple sectors,we identify a hierarchical progression of skill demands-from operational tool proficiency through synergistic workflow integration to strategic innovation capabilities.This study reveals that AIGC drives non-linear occupational transformation characterized by professional boundary erosion,cross-domain skill integration,and the rising premium on uniquely human capacities for ethical judgment,complex problem-framing,and emotional intelligence.We further delineate critical governance challenges in algorithmic accountability,intellectual property regimes,and workforce transition management.This study contributes to labor economics and technology sociology by providing a unified framework to understand occupational metamorphosis in the AI era,offering preliminary insights for policymakers,educators,and organizational leaders navigating the human-AI symbiosis.展开更多
Phosphors with high color purity and brightness are strongly desired for applications in areas such as solid-state lighting and displays.Herein,a new narrow-band intense green-emitting phosphor,Eu^(2+)doped CsKNaLi(Li...Phosphors with high color purity and brightness are strongly desired for applications in areas such as solid-state lighting and displays.Herein,a new narrow-band intense green-emitting phosphor,Eu^(2+)doped CsKNaLi(Li_(3)SiO_(4))_(4)(CKNLLSO)with a full width at half maximum of 55 nm,is reported.The substitutions of Eu^(2+)on three monovalent cations Na^(+),K^(+),and Cs^(+)resulted in three Gaussian emission bands.The barycenter energy of Eu^(2+)4f ^(6)5d configuration was calculated using a semi-empirical formula and compared with the experimental value.The rigid tunnel structure and luminescence concentration quenching were also analyzed to judge site occupation.The crystal and band structures of the host compound were characterized and calculated with the aid of Rietveld refinement and density functional theory,respectively.The CKNLLSO:Eu^(2+)phosphor exhibits relatively high thermal stability even if the temperature is increased to 190°C.The optical properties of green and white LEDs fabricated by mixing the optimized CKNLLSO:4%Eu^(2+)phosphor without or with commercial blue and red phosphors were investigated.The detailed discussion about the relationship between the rigid tunnel structure and PL properties of CKNLLSO:Eu^(2+)will serve as a guide to develop new oxide-based narrow-band phosphors.All the results imply the great potential of Eu^(2+)doped CKNLLSO phosphors for applications in the field of backlighting or pc-wLEDs.展开更多
Even though the link between foot posture and lower-extremity injuries remains controversial,there has been little research focus on bilateral foot symmetry.This study evaluated the correlation between bilateral symme...Even though the link between foot posture and lower-extremity injuries remains controversial,there has been little research focus on bilateral foot symmetry.This study evaluated the correlation between bilateral symmetry in foot posture and lower extremity musculoskeletal injuries among workers in physically intensive occupations.A total of 248 participants with physically demanding roles were enrolled.Historical data on lower-limb musculoskeletal injuries were obtained through a review of medical records,supplemented by results from onsite consultations.The foot arch index(AI)was quantitatively measured using a 3D laser foot scanner,and foot posture was evaluated using the foot posture index-6(FPI-6).The participants were categorized into subgroups based on bilateral symmetry assessments of their feet.Logistic regression analyses were performed for statistical comparisons after adjusting for potential confounding factors.The results indicate that abnormalities in foot posture and arch,assessed using the FPI-6 and AI,were identified in 42.3%and 47.2%of participants,respectively,with 20.9%and 16.5%demonstrating bilateral asymmetry in these parameters.When comparing bilateral and unilateral foot protonation with bilaterally normal feet,the risk adjustments revealed differences of 2.274(95%CI:1.094-4.729,P=0.028)and 2.751(95%CI:1.222-6.191,P=0.015),respectively.Furthermore,the risk adjustment for age,BMI,smoking status,physical training years,training time,training frequency,warm-up before training,relaxation after training,MIS prevention,and treatment learning for unilateral flatfoot relative to bilateral normal feet was 3.197(95%CI:1.235-8.279,P=0.017).This study demonstrates that workers in physically demanding occupations who exhibit unilateral foot protonation or unilateral flatfoot are at an increased risk of lower-extremity musculoskeletal injuries.展开更多
Recognition of psychological characteristics based on massive data and computer machine learning algorithms has gradually become a new way for psychological research. As we all know, person-job fit is an important con...Recognition of psychological characteristics based on massive data and computer machine learning algorithms has gradually become a new way for psychological research. As we all know, person-job fit is an important consideration in recruitment and selection. Most existing selection process can reliably measure skills fit, i.e., matching job seekers’ skills/work experience with job demand. What is often harder to assess is the compatibility between job seekers’ motivational needs/career aspirations and job characteristics, which will ultimately determine their career progress and job satisfaction. With the increasing application of machine learning methods in psychology, this paper constructed classification models to predict individuals’ needs, career aspiration, and occupation through their personality traits. This enables automatic access to individuals’ psychological indicators, with the MLP (Multi-Layer Perceptron) method showing the highest prediction accuracy. In addition, it conducted a comparative analysis of the distribution of personality characteristics in different occupations. Based on the study results, we put forward some countermeasures and suggestions for application in human resource management.展开更多
IN traditional Chinese society, having an occupation, as a means of making a living, was the "privilege" of women at lower levels of society. Married and unmarried women who had servants were sneered at if t...IN traditional Chinese society, having an occupation, as a means of making a living, was the "privilege" of women at lower levels of society. Married and unmarried women who had servants were sneered at if they had an occupation. The work that lower class women did was generally related to production and labor, market exchange, communications展开更多
Classifying job offers into occupational categories is a fundamental task in human resource information systems,as it improves and streamlines indexing,search,and matching between openings and job seekers.Comprehensiv...Classifying job offers into occupational categories is a fundamental task in human resource information systems,as it improves and streamlines indexing,search,and matching between openings and job seekers.Comprehensive occupational databases such as O∗NET or ESCO provide detailed taxonomies of interrelated positions that can be leveraged to align the textual content of postings with occupational categories,thereby facilitating standardization,cross-system interoperability,and access to metadata for each occupation(e.g.,tasks,knowledge,skills,and abilities).In this work,we explore the effectiveness of fine-tuning existing language models(LMs)to classify job offers with occupational descriptors from O∗NET.This enables a more precise assessment of candidate suitability by identifying the specific knowledge and skills required for each position,and helps automate recruitment processes by mitigating human bias and subjectivity in candidate selection.We evaluate three representative BERT-like models:BERT,RoBERTa,and DeBERTa.BERT serves as the baseline encoder-only architecture;RoBERTa incorporates advances in pretraining objectives and data scale;and DeBERTa introduces architectural improvements through disentangled attention mechanisms.The best performance was achieved with the DeBERTa model,although the other models also produced strong results,and no statistically significant differences were observed acrossmodels.We also find that these models typically reach optimal performance after only a few training epochs,and that training with smaller,balanced datasets is effective.Consequently,comparable results can be obtained with models that require fewer computational resources and less training time,facilitating deployment and practical use.展开更多
Objective: To investigate the efficacy of multidimensional protective nursing interventions in reducing occupational exposure risks to hydrofluoric acid in dental departments. Methods: The study was conducted between ...Objective: To investigate the efficacy of multidimensional protective nursing interventions in reducing occupational exposure risks to hydrofluoric acid in dental departments. Methods: The study was conducted between January 2024 and January 2025, involving 60 healthcare workers who were randomly assigned to groups. The control group (n = 30) received conventional occupational protective nursing care, while the observation group underwent multidimensional protective nursing interventions. Results: Following intervention, the observation group demonstrated significantly higher scores than the control group in knowledge of hydrofluoric acid occupational exposure, occupational exposure risk perception, and protective skill operation (p < 0.05). Emergency response capability scores and protective behavior implementation scores were also higher in the observation group (p < 0.05). Compared to the control group, the observation group exhibited higher occupational health satisfaction rates and lower occupational exposure incidence rates (p < 0.05). Conclusion: Multidimensional protective nursing interventions effectively enhance dental healthcare personnel’s awareness and protective capabilities regarding hydrofluoric acid occupational exposure, improve compliance with protective measures, and significantly reduce occupational exposure risks. This approach warrants promotion and application in occupational protective nursing interventions within dental departments.展开更多
Canopy photosynthesis,rather than leaf photosynthesis,is highly related to plant biomass and yield formation.Studying canopy photosynthesis and identifying the parameters that control it can help optimize agricultural...Canopy photosynthesis,rather than leaf photosynthesis,is highly related to plant biomass and yield formation.Studying canopy photosynthesis and identifying the parameters that control it can help optimize agricultural management and achieve crop yield potential.Compared with traditional parameters,canopy occupation volume(COV)offers an integrative parameter on canopy architecture related to canopy photosynthetic rates.In this study,we developed a high-throughput method to derive COV for different rice varieties.We first used multi-perspective two-dimensional imaging to reconstruct three-dimensional point clouds of rice plants and developed a suite of pipelines to calculate plant height,leaf number,tiller number,and biomass,with R^(2) values of 91.8%,95.9%,82.3%,and 94.3%,respectively.We further employed point cloud data to reconstruct the surfaces of rice plants and construct a virtual canopy model of the rice population.Light distribution was simulated using a ray-tracing algorithm and canopy photosynthetic rates were simulated via photosynthetic rate-incident light intensity curve fitting.Furthermore,we systematically explored the relationships between canopy phenotypes and photosynthetic rates,and found that COV was the most effective predictor of canopy photosynthesis,achieving an R^(2) value of 92.1%.Adjustment in atmospheric transmittance showed that COV strongly correlated with canopy photosynthesis under different light conditions,with higher accuracy observed under diffuse light.Variations in planting density confirmed that this correlation remained strong at the community level.In summary,this study demonstrates that COV is closely linked to simulated canopy photosynthesis and the developed pipeline can support future agronomic and breeding research.展开更多
Rhizobial inoculation in soybean is an effective strategy in sustainable agriculture to reduce chemical fertilizer application and to increase crop production.It not only provides nitrogen sources for host plants but ...Rhizobial inoculation in soybean is an effective strategy in sustainable agriculture to reduce chemical fertilizer application and to increase crop production.It not only provides nitrogen sources for host plants but also improves the rhizosphere soil environment.However,the inoculation efficiency of rhizobia remains to be improved.In this study,we investigated the nodulation efficiency of Bradyrhizobium and Sinorhizobium strains under different soil conditions and evaluated their impacts on the rhizocompartment bacterial community.We found that inoculation with Bradyrhizobium diazoefficiens UASD 110 increased the number of soybean nodules in acidic soil,while Sinorhizobium fredii CCBAU 45436 was more effective in alkaline soil.However,inoculation with neither strain significantly affected nodulation in neutral soil.Then,we demonstrated that UASD 110 was more competitive in nodulation than CCBAU 45436,which was related to its higher abundance in the rhizosphere.Furthermore,we showed that while single inoculation with UASD 110 or CCBAU 45436 failed to alter the bacterial diversity,these two strains differentially influenced the rhizosphere microbial composition.Finally,we identified the main rhizosphere microorganisms that were affected by these two strains.Our findings revealed that the nodulation capacity of rhizobia and their colonization of rhizosphere and nodules are soil-type dependent,yet their impact on the rhizobacterial community exhibited consistent patterns.These findings provide valuable insights into optimizing rhizobial inoculation strategies to enhance nitrogen fixation efficiency.展开更多
The Jellium closed-shell model,a cornerstone of cluster science,has long guided the design of superatoms by dictating electron-counting rules.However,its reliance on precise control of cluster composition and electron...The Jellium closed-shell model,a cornerstone of cluster science,has long guided the design of superatoms by dictating electron-counting rules.However,its reliance on precise control of cluster composition and electron shell occupancy presents significant experimental challenges.Here,we introduce a ligation strategy that circumvents these limitations by demonstrating that the adiabatic electron affinity(AEA) of aluminum-based clusters,whether with filled or partially filled electron shells,can be dramatically enhanced through the attachment of organic Lewis acid ligands.It was evidenced that the AEA of PAl12can be significantly increased by 2.17 e V after the ligation of two ligands,indicating a remarkable improvement in its electron-accepting ability.This approach yields superhalogen species,offering a versatile and practical means to tune the electronic properties of clusters while preserving their superatomic states,independent of shell occupancy.Remarkably,this ligand-induced modulation is not confined to naked clusters but also extends to nano-confined systems,hinting at its broader applicability.Given the indispensable role of ligands in cluster synthesis,this strategy holds promise for advancing the field of condensed-phase superatom synthesis,potentially complementing traditional electron-counting rules in a broader range of applications.展开更多
Waterbird populations are declining globally due to various factors such as wetland degradation and loss,pesticide use,urbanization,and hunting.However,traditional farming practices and wetlands still provide importan...Waterbird populations are declining globally due to various factors such as wetland degradation and loss,pesticide use,urbanization,and hunting.However,traditional farming practices and wetlands still provide important habitats for the large waterbirds in South Asia,including Nepal.These habitats become especially limited during the summer season,when wetlands dry up,and most farmlands remain fallow.We investigated the occupancy and detection probabilities of four sympatric,large-bodied,threatened waterbirds(Sarus Crane Grus antigone,Lesser Adjutant Leptoptilos javanicus,Asian Openbill Anastomus oscitans,and Asian Woollyneck Ciconia episcopus)using road count survey,and their relationship with land-use variables across 93(5×5 km)grids during summer season(April-May;pre-breeding season)of 2023 in the Greater Lumbini Area of Nepal.Detection probability was highest for the Sarus Crane,while occupancy was highest for the Lesser Adjutant.In contrast,the Asian Woollyneck had the lowest occupancy and detection probability.Waterbird occupancy was highest within the Jagdishpur Reservoir/Lumbini Farmlands Important Bird and Biodiversity Area.Farmland area had a significant positive effect on the occupancy for all waterbirds except the Asian Woollyneck.Wetland and built-up areas had significant positive effects on the occupancy of Sarus Crane,but showed non-significant positive associations for other species.Such positive association with built-up areas may reflect some level of adaptation to human-dominated landscapes;however,increased urbanization could disrupt natural behaviors and elevate exposure to anthropogenic threats in future.Therefore,maintaining waterholes and irrigation networks across farmland during the summer season is imperative for safeguarding threatened waterbirds as these areas can function as critical habitats and potential buffers against the adverse impacts of expanding built-up regions.展开更多
With the increasing complexity of substation inspection tasks,achieving efficient and safe path planning for Unmanned Aerial Vehicles in densely populated and structurally complex three-dimensional(3D)environments rem...With the increasing complexity of substation inspection tasks,achieving efficient and safe path planning for Unmanned Aerial Vehicles in densely populated and structurally complex three-dimensional(3D)environments remains a critical challenge.To address this problem,this paper proposes an improved path planning algorithm—Random Geometric Graph(RGG)-guided Rapidly-exploring Random Tree(R-RRT)—based on the classical Rapidly-exploring Random Tree(RRT)framework.First,a refined 3D occupancy grid map is constructed from Light Detection and Ranging point cloud data through ground filtering,noise removal,coordinate transformation,and obstacle inflation using spherical structuring elements.During the planning stage,a dynamic goal-biasing strategy is introduced to adaptively adjust the sampling direction,the sampling distribution is optimized using a pre-generated RGG,and collision detection is accelerated via a K-Dimensional Tree structure.After initial trajectory generation,redundant nodes are eliminated via greedy pruning,and a curvature-minimizing gradient-based optimizationmethod is applied to smooth the trajectory.Experimental results conducted in a simulated substation environment demonstrate that,compared with mainstream path planning algorithms,the proposed R-RRT achieves superior performance in terms of path length,planning time,and trajectory smoothness.Comprehensive analysis shows that the proposed method significantly enhances trajectory quality,planning efficiency,and operational safety,validating its applicability and advantages for high-precision 3D path planning in complex substation inspection scenarios.展开更多
This paper addresses the magnetic properties of Nd-Fe (Co,Al,Ga)-B permanent magneticalloys. The crystal occupations of Co,Al,Ga atoms at these alloys have been studied by meansof Mossbauer spectroscopy. The magnets w...This paper addresses the magnetic properties of Nd-Fe (Co,Al,Ga)-B permanent magneticalloys. The crystal occupations of Co,Al,Ga atoms at these alloys have been studied by meansof Mossbauer spectroscopy. The magnets were made by means of powder metallurgy methodwith magnetic properties: B_r=1.19 T, iH_G=1130kA/m, BH_(max)=262kJ/m^3, B_r=0.04%/℃,T_C=450-550℃. The results indicated that the Alatoms mainly occupy the j_2 site, Ga atomspreferentially occupy k_2 site and Co atoms the 8j_2 and 16 k_2 sites. The reason why the Curietemperature rises lies in the fact that the Co atoms have occupied the crystal sites in thetetragonal phase.展开更多
A half-decade gap between albums may be the norm for veteran rock stars holding on to what's left of their music career:When it's a young band with massive potential and a solid fan-base,it's not so common...A half-decade gap between albums may be the norm for veteran rock stars holding on to what's left of their music career:When it's a young band with massive potential and a solid fan-base,it's not so common."We've been through a lot,both in and out of music,"explains Wang Xinjju and He Fan,the founding members of Beijing noise rock outfit Birdstriking.展开更多
Emergency department nurses face severe occupational stress leading to anxiety,depression,and burnout,which significantly impair their well-being and patientcare quality.This narrative review examined the role of mind...Emergency department nurses face severe occupational stress leading to anxiety,depression,and burnout,which significantly impair their well-being and patientcare quality.This narrative review examined the role of mindfulness-based stress reduction(MBSR)in addressing these challenges.Rooted in nonjudgmental present-moment awareness,MBSR enhances emotional regulation and reduces psychological distress by fostering adaptive coping strategies.Studies have demonstrated its efficacy in lowering anxiety,depressive symptoms,and emotional exhaustion,while improving workplace well-being,empathy,and job satisfaction.Mechanistically,MBSR improves interoceptive awareness and autonomic balance,as evidenced by physiological markers such as heart rate variability.However,gaps remain in long-term efficacy assessments,personalized interventions,and integration with multidisciplinary approaches.Future research should prioritize tailored biomarker-driven programs,longitudinal studies,and scalable implementation strategies in high-stress clinical settings.This review underscores MBSR’s potential as a sustainable,evidence-based tool to enhance emergency department nurses’mental health and professional performance,advocating for broader adoption and further refinement of its practical applications.展开更多
Objective:Postpartum nutrition plays a critical role in maternal recovery and long-term health.However,the nutritional status of working mothers in the postpartum period remains understudied.This study aimed to assess...Objective:Postpartum nutrition plays a critical role in maternal recovery and long-term health.However,the nutritional status of working mothers in the postpartum period remains understudied.This study aimed to assess the dietary quality of postpartum women in urban Beijing,identify occupational-related factors influencing their diet,and explore potential interventions to improve maternal nutrition during the postpartum period.Methods:In this cross-sectional analysis,554 women one year after delivery were recruited from ten community health centers.Sociodemographic,occupational and postpartum care variables were collected via questionnaire.Dietary intake over the preceding year was assessed using a food frequency questionnaire.The modified dietary balance index for postpartum women were used for dietary quality assessment.Results:The study revealed severe dietary imbalances among postpartum women,characterized by excessive consumption of cereals,eggs,and meats,while their intake of vegetables,fruits,and dairy products was inadequate.According to dietary balance index for postpartum women,66.25%of mothers showed varying degrees of excessive intake.45.31%of mothers experienced varying levels of insufficient intake,with only 19.86%of participants having a relatively balanced diet.Occupational differences were observed,with women in the commercial employment group showing higher levels of excessive food intake.The analysis of influencing factors showed that family monthly income,maternity leave,and postpartum care significantly affected the dietary quality.Conclusions:Postpartum women in Beijing experience widespread dietary imbalances,with both excesses and deficiencies.Occupational context and related factors significantly shape diet quality.These findings highlight the need for targeted nutritional interventions tailored to the specific challenges of different occupational groups.展开更多
Objective We aimed to investigate the patterns of fasting blood glucose(FBG)trajectories and analyze the relationship between various occupational hazard factors and FBG trajectories in male steelworkers.Methods The s...Objective We aimed to investigate the patterns of fasting blood glucose(FBG)trajectories and analyze the relationship between various occupational hazard factors and FBG trajectories in male steelworkers.Methods The study cohort included 3,728 workers who met the selection criteria for the Tanggang Occupational Cohort(TGOC)between 2017 and 2022.A group-based trajectory model was used to identify the FBG trajectories.Environmental risk scores(ERS)were constructed using regression coefficients from the occupational hazard model as weights.Univariate and multivariate logistic regression analyses were performed to explore the effects of occupational hazard factors using the ERS on FBG trajectories.Results FBG trajectories were categorized into three groups.An association was observed between high temperature,noise exposure,and FBG trajectory(P<0.05).Using the first quartile group of ERS1 as a reference,the fourth quartile group of ERS1 had an increased risk of medium and high FBG by 1.90and 2.21 times,respectively(odds ratio[OR]=1.90,95%confidence interval[CI]:1.17–3.10;OR=2.21,95%CI:1.09–4.45).Conclusion An association was observed between occupational hazards based on ERS and FBG trajectories.The risk of FBG trajectory levels increase with an increase in ERS.展开更多
文摘Meituan,Dianping and Zhaopin recently and jointly released a report on work and life of new professionals in2018(hereinafter referred to as the Report),showing that as a large number of working-age workers in China have shifted from the manufacturing to the service industries.Under the background of escalating consumption,demand of consumers is becoming more individualized and diversified,and monthly income is rising.
文摘We have compared 142 adult men and women of various ages, grouped by professional occupation, all the occupations involving local muscular performance. We studied heart reactions and central nervous system reactions to local muscular performance done until fatigue set in. The results suggested that adaptive body changes had a number of shared signs, namely, tachycardia, hypertension, and increased statistical figures of the heart rhythm, which were indicative of tension in central regulatory mechanisms of the heart.
基金Supported by the construct program of the key discipline in Zhengzhou University of Technology.Key Scientific Research Project of Henan Provincial Institutions of Higher Education in 2026:"Research on Collaborative Innovation Mechanism and High-Quality Development Path of University-Enterprise R&D Centers in Henan Province Driven by Dual Wheels"(Project No.:26B630028)。
文摘This study presents a comprehensive theoretical framework to examine how generative artificial intelligence transforms occupational structures through the dynamic interplay of technological capabilities,skill requirements,and societal adaptation.Departing from conventional analyses focused on technical specifications or ethical risks,we develop a novel"technology-skill-society"triad to systematically investigate AIGC's role in occupational evolution.Our analysis reveals three distinct pathways for emerging professions:(1)prompting and optimization-led roles that combine human creative direction with AI execution,(2)evaluation and decision-augmenting positions emphasizing human oversight of AI outputs,and(3)interaction and agent-based occupations redefining human-AI service delivery.Through illustrative analysis of transformed and newly created occupations across multiple sectors,we identify a hierarchical progression of skill demands-from operational tool proficiency through synergistic workflow integration to strategic innovation capabilities.This study reveals that AIGC drives non-linear occupational transformation characterized by professional boundary erosion,cross-domain skill integration,and the rising premium on uniquely human capacities for ethical judgment,complex problem-framing,and emotional intelligence.We further delineate critical governance challenges in algorithmic accountability,intellectual property regimes,and workforce transition management.This study contributes to labor economics and technology sociology by providing a unified framework to understand occupational metamorphosis in the AI era,offering preliminary insights for policymakers,educators,and organizational leaders navigating the human-AI symbiosis.
基金the National Natural Science Foundation of China(Grant No.11804180)the Doctoral Foundation of the Natural Science Foundation of Shandong Province(Grant No.ZR2017BEM013).
文摘Phosphors with high color purity and brightness are strongly desired for applications in areas such as solid-state lighting and displays.Herein,a new narrow-band intense green-emitting phosphor,Eu^(2+)doped CsKNaLi(Li_(3)SiO_(4))_(4)(CKNLLSO)with a full width at half maximum of 55 nm,is reported.The substitutions of Eu^(2+)on three monovalent cations Na^(+),K^(+),and Cs^(+)resulted in three Gaussian emission bands.The barycenter energy of Eu^(2+)4f ^(6)5d configuration was calculated using a semi-empirical formula and compared with the experimental value.The rigid tunnel structure and luminescence concentration quenching were also analyzed to judge site occupation.The crystal and band structures of the host compound were characterized and calculated with the aid of Rietveld refinement and density functional theory,respectively.The CKNLLSO:Eu^(2+)phosphor exhibits relatively high thermal stability even if the temperature is increased to 190°C.The optical properties of green and white LEDs fabricated by mixing the optimized CKNLLSO:4%Eu^(2+)phosphor without or with commercial blue and red phosphors were investigated.The detailed discussion about the relationship between the rigid tunnel structure and PL properties of CKNLLSO:Eu^(2+)will serve as a guide to develop new oxide-based narrow-band phosphors.All the results imply the great potential of Eu^(2+)doped CKNLLSO phosphors for applications in the field of backlighting or pc-wLEDs.
基金supported by the Xi'an Science and Technology Plan Project(22YXYJ0125)Air Force Medical University Clinical Research Project(2022LC2235).
文摘Even though the link between foot posture and lower-extremity injuries remains controversial,there has been little research focus on bilateral foot symmetry.This study evaluated the correlation between bilateral symmetry in foot posture and lower extremity musculoskeletal injuries among workers in physically intensive occupations.A total of 248 participants with physically demanding roles were enrolled.Historical data on lower-limb musculoskeletal injuries were obtained through a review of medical records,supplemented by results from onsite consultations.The foot arch index(AI)was quantitatively measured using a 3D laser foot scanner,and foot posture was evaluated using the foot posture index-6(FPI-6).The participants were categorized into subgroups based on bilateral symmetry assessments of their feet.Logistic regression analyses were performed for statistical comparisons after adjusting for potential confounding factors.The results indicate that abnormalities in foot posture and arch,assessed using the FPI-6 and AI,were identified in 42.3%and 47.2%of participants,respectively,with 20.9%and 16.5%demonstrating bilateral asymmetry in these parameters.When comparing bilateral and unilateral foot protonation with bilaterally normal feet,the risk adjustments revealed differences of 2.274(95%CI:1.094-4.729,P=0.028)and 2.751(95%CI:1.222-6.191,P=0.015),respectively.Furthermore,the risk adjustment for age,BMI,smoking status,physical training years,training time,training frequency,warm-up before training,relaxation after training,MIS prevention,and treatment learning for unilateral flatfoot relative to bilateral normal feet was 3.197(95%CI:1.235-8.279,P=0.017).This study demonstrates that workers in physically demanding occupations who exhibit unilateral foot protonation or unilateral flatfoot are at an increased risk of lower-extremity musculoskeletal injuries.
基金supported by the key research project of National Party School (School of Administration) system, under grant No.2022DXXTZDDYKT002.
文摘Recognition of psychological characteristics based on massive data and computer machine learning algorithms has gradually become a new way for psychological research. As we all know, person-job fit is an important consideration in recruitment and selection. Most existing selection process can reliably measure skills fit, i.e., matching job seekers’ skills/work experience with job demand. What is often harder to assess is the compatibility between job seekers’ motivational needs/career aspirations and job characteristics, which will ultimately determine their career progress and job satisfaction. With the increasing application of machine learning methods in psychology, this paper constructed classification models to predict individuals’ needs, career aspiration, and occupation through their personality traits. This enables automatic access to individuals’ psychological indicators, with the MLP (Multi-Layer Perceptron) method showing the highest prediction accuracy. In addition, it conducted a comparative analysis of the distribution of personality characteristics in different occupations. Based on the study results, we put forward some countermeasures and suggestions for application in human resource management.
文摘IN traditional Chinese society, having an occupation, as a means of making a living, was the "privilege" of women at lower levels of society. Married and unmarried women who had servants were sneered at if they had an occupation. The work that lower class women did was generally related to production and labor, market exchange, communications
文摘Classifying job offers into occupational categories is a fundamental task in human resource information systems,as it improves and streamlines indexing,search,and matching between openings and job seekers.Comprehensive occupational databases such as O∗NET or ESCO provide detailed taxonomies of interrelated positions that can be leveraged to align the textual content of postings with occupational categories,thereby facilitating standardization,cross-system interoperability,and access to metadata for each occupation(e.g.,tasks,knowledge,skills,and abilities).In this work,we explore the effectiveness of fine-tuning existing language models(LMs)to classify job offers with occupational descriptors from O∗NET.This enables a more precise assessment of candidate suitability by identifying the specific knowledge and skills required for each position,and helps automate recruitment processes by mitigating human bias and subjectivity in candidate selection.We evaluate three representative BERT-like models:BERT,RoBERTa,and DeBERTa.BERT serves as the baseline encoder-only architecture;RoBERTa incorporates advances in pretraining objectives and data scale;and DeBERTa introduces architectural improvements through disentangled attention mechanisms.The best performance was achieved with the DeBERTa model,although the other models also produced strong results,and no statistically significant differences were observed acrossmodels.We also find that these models typically reach optimal performance after only a few training epochs,and that training with smaller,balanced datasets is effective.Consequently,comparable results can be obtained with models that require fewer computational resources and less training time,facilitating deployment and practical use.
基金Construction of Standardized Protective Nursing Plan for Hydrofluoric Acid Operations in Dentistry and Research on Injury Prevention Effects(Project No.:FZ2025101)。
文摘Objective: To investigate the efficacy of multidimensional protective nursing interventions in reducing occupational exposure risks to hydrofluoric acid in dental departments. Methods: The study was conducted between January 2024 and January 2025, involving 60 healthcare workers who were randomly assigned to groups. The control group (n = 30) received conventional occupational protective nursing care, while the observation group underwent multidimensional protective nursing interventions. Results: Following intervention, the observation group demonstrated significantly higher scores than the control group in knowledge of hydrofluoric acid occupational exposure, occupational exposure risk perception, and protective skill operation (p < 0.05). Emergency response capability scores and protective behavior implementation scores were also higher in the observation group (p < 0.05). Compared to the control group, the observation group exhibited higher occupational health satisfaction rates and lower occupational exposure incidence rates (p < 0.05). Conclusion: Multidimensional protective nursing interventions effectively enhance dental healthcare personnel’s awareness and protective capabilities regarding hydrofluoric acid occupational exposure, improve compliance with protective measures, and significantly reduce occupational exposure risks. This approach warrants promotion and application in occupational protective nursing interventions within dental departments.
基金supported by the National Natural Science Foundation of China(Grant Nos.32201654 and U22A20464)National Key Research and Development Program from the Ministry of Science and Technology of China(Grant No.2020YFA0907600)the 2115 Talent Development Program of China Agricultural University.
文摘Canopy photosynthesis,rather than leaf photosynthesis,is highly related to plant biomass and yield formation.Studying canopy photosynthesis and identifying the parameters that control it can help optimize agricultural management and achieve crop yield potential.Compared with traditional parameters,canopy occupation volume(COV)offers an integrative parameter on canopy architecture related to canopy photosynthetic rates.In this study,we developed a high-throughput method to derive COV for different rice varieties.We first used multi-perspective two-dimensional imaging to reconstruct three-dimensional point clouds of rice plants and developed a suite of pipelines to calculate plant height,leaf number,tiller number,and biomass,with R^(2) values of 91.8%,95.9%,82.3%,and 94.3%,respectively.We further employed point cloud data to reconstruct the surfaces of rice plants and construct a virtual canopy model of the rice population.Light distribution was simulated using a ray-tracing algorithm and canopy photosynthetic rates were simulated via photosynthetic rate-incident light intensity curve fitting.Furthermore,we systematically explored the relationships between canopy phenotypes and photosynthetic rates,and found that COV was the most effective predictor of canopy photosynthesis,achieving an R^(2) value of 92.1%.Adjustment in atmospheric transmittance showed that COV strongly correlated with canopy photosynthesis under different light conditions,with higher accuracy observed under diffuse light.Variations in planting density confirmed that this correlation remained strong at the community level.In summary,this study demonstrates that COV is closely linked to simulated canopy photosynthesis and the developed pipeline can support future agronomic and breeding research.
基金supported by the Agricultural Science and Technology Innovation Program(CAAS-ZDRW202416)the Science and Technology Major Projects of Hubei Province(2023BBA002)the National Natural Science Foundation of China grants(32441047,32441046 and 32471627)。
文摘Rhizobial inoculation in soybean is an effective strategy in sustainable agriculture to reduce chemical fertilizer application and to increase crop production.It not only provides nitrogen sources for host plants but also improves the rhizosphere soil environment.However,the inoculation efficiency of rhizobia remains to be improved.In this study,we investigated the nodulation efficiency of Bradyrhizobium and Sinorhizobium strains under different soil conditions and evaluated their impacts on the rhizocompartment bacterial community.We found that inoculation with Bradyrhizobium diazoefficiens UASD 110 increased the number of soybean nodules in acidic soil,while Sinorhizobium fredii CCBAU 45436 was more effective in alkaline soil.However,inoculation with neither strain significantly affected nodulation in neutral soil.Then,we demonstrated that UASD 110 was more competitive in nodulation than CCBAU 45436,which was related to its higher abundance in the rhizosphere.Furthermore,we showed that while single inoculation with UASD 110 or CCBAU 45436 failed to alter the bacterial diversity,these two strains differentially influenced the rhizosphere microbial composition.Finally,we identified the main rhizosphere microorganisms that were affected by these two strains.Our findings revealed that the nodulation capacity of rhizobia and their colonization of rhizosphere and nodules are soil-type dependent,yet their impact on the rhizobacterial community exhibited consistent patterns.These findings provide valuable insights into optimizing rhizobial inoculation strategies to enhance nitrogen fixation efficiency.
基金supported by the National Natural Science Foundation of China (NSFC,Nos.12474274,92161101)the Innovation Project of Jinan Science and Technology Bureau (No.2021GXRC032)the Natural Science Foundation of Shandong Province (No.ZR2024MA091)。
文摘The Jellium closed-shell model,a cornerstone of cluster science,has long guided the design of superatoms by dictating electron-counting rules.However,its reliance on precise control of cluster composition and electron shell occupancy presents significant experimental challenges.Here,we introduce a ligation strategy that circumvents these limitations by demonstrating that the adiabatic electron affinity(AEA) of aluminum-based clusters,whether with filled or partially filled electron shells,can be dramatically enhanced through the attachment of organic Lewis acid ligands.It was evidenced that the AEA of PAl12can be significantly increased by 2.17 e V after the ligation of two ligands,indicating a remarkable improvement in its electron-accepting ability.This approach yields superhalogen species,offering a versatile and practical means to tune the electronic properties of clusters while preserving their superatomic states,independent of shell occupancy.Remarkably,this ligand-induced modulation is not confined to naked clusters but also extends to nano-confined systems,hinting at its broader applicability.Given the indispensable role of ligands in cluster synthesis,this strategy holds promise for advancing the field of condensed-phase superatom synthesis,potentially complementing traditional electron-counting rules in a broader range of applications.
文摘Waterbird populations are declining globally due to various factors such as wetland degradation and loss,pesticide use,urbanization,and hunting.However,traditional farming practices and wetlands still provide important habitats for the large waterbirds in South Asia,including Nepal.These habitats become especially limited during the summer season,when wetlands dry up,and most farmlands remain fallow.We investigated the occupancy and detection probabilities of four sympatric,large-bodied,threatened waterbirds(Sarus Crane Grus antigone,Lesser Adjutant Leptoptilos javanicus,Asian Openbill Anastomus oscitans,and Asian Woollyneck Ciconia episcopus)using road count survey,and their relationship with land-use variables across 93(5×5 km)grids during summer season(April-May;pre-breeding season)of 2023 in the Greater Lumbini Area of Nepal.Detection probability was highest for the Sarus Crane,while occupancy was highest for the Lesser Adjutant.In contrast,the Asian Woollyneck had the lowest occupancy and detection probability.Waterbird occupancy was highest within the Jagdishpur Reservoir/Lumbini Farmlands Important Bird and Biodiversity Area.Farmland area had a significant positive effect on the occupancy for all waterbirds except the Asian Woollyneck.Wetland and built-up areas had significant positive effects on the occupancy of Sarus Crane,but showed non-significant positive associations for other species.Such positive association with built-up areas may reflect some level of adaptation to human-dominated landscapes;however,increased urbanization could disrupt natural behaviors and elevate exposure to anthropogenic threats in future.Therefore,maintaining waterholes and irrigation networks across farmland during the summer season is imperative for safeguarding threatened waterbirds as these areas can function as critical habitats and potential buffers against the adverse impacts of expanding built-up regions.
基金Funding for this research was provided by the Program for Scientific Research Innovation Team in Colleges and Universities of Anhui Province(No.2022AH010095)the Hefei Key Technology R&D“Champion-Based Selection”Project(No.2023SGJ011).
文摘With the increasing complexity of substation inspection tasks,achieving efficient and safe path planning for Unmanned Aerial Vehicles in densely populated and structurally complex three-dimensional(3D)environments remains a critical challenge.To address this problem,this paper proposes an improved path planning algorithm—Random Geometric Graph(RGG)-guided Rapidly-exploring Random Tree(R-RRT)—based on the classical Rapidly-exploring Random Tree(RRT)framework.First,a refined 3D occupancy grid map is constructed from Light Detection and Ranging point cloud data through ground filtering,noise removal,coordinate transformation,and obstacle inflation using spherical structuring elements.During the planning stage,a dynamic goal-biasing strategy is introduced to adaptively adjust the sampling direction,the sampling distribution is optimized using a pre-generated RGG,and collision detection is accelerated via a K-Dimensional Tree structure.After initial trajectory generation,redundant nodes are eliminated via greedy pruning,and a curvature-minimizing gradient-based optimizationmethod is applied to smooth the trajectory.Experimental results conducted in a simulated substation environment demonstrate that,compared with mainstream path planning algorithms,the proposed R-RRT achieves superior performance in terms of path length,planning time,and trajectory smoothness.Comprehensive analysis shows that the proposed method significantly enhances trajectory quality,planning efficiency,and operational safety,validating its applicability and advantages for high-precision 3D path planning in complex substation inspection scenarios.
文摘This paper addresses the magnetic properties of Nd-Fe (Co,Al,Ga)-B permanent magneticalloys. The crystal occupations of Co,Al,Ga atoms at these alloys have been studied by meansof Mossbauer spectroscopy. The magnets were made by means of powder metallurgy methodwith magnetic properties: B_r=1.19 T, iH_G=1130kA/m, BH_(max)=262kJ/m^3, B_r=0.04%/℃,T_C=450-550℃. The results indicated that the Alatoms mainly occupy the j_2 site, Ga atomspreferentially occupy k_2 site and Co atoms the 8j_2 and 16 k_2 sites. The reason why the Curietemperature rises lies in the fact that the Co atoms have occupied the crystal sites in thetetragonal phase.
文摘A half-decade gap between albums may be the norm for veteran rock stars holding on to what's left of their music career:When it's a young band with massive potential and a solid fan-base,it's not so common."We've been through a lot,both in and out of music,"explains Wang Xinjju and He Fan,the founding members of Beijing noise rock outfit Birdstriking.
文摘Emergency department nurses face severe occupational stress leading to anxiety,depression,and burnout,which significantly impair their well-being and patientcare quality.This narrative review examined the role of mindfulness-based stress reduction(MBSR)in addressing these challenges.Rooted in nonjudgmental present-moment awareness,MBSR enhances emotional regulation and reduces psychological distress by fostering adaptive coping strategies.Studies have demonstrated its efficacy in lowering anxiety,depressive symptoms,and emotional exhaustion,while improving workplace well-being,empathy,and job satisfaction.Mechanistically,MBSR improves interoceptive awareness and autonomic balance,as evidenced by physiological markers such as heart rate variability.However,gaps remain in long-term efficacy assessments,personalized interventions,and integration with multidisciplinary approaches.Future research should prioritize tailored biomarker-driven programs,longitudinal studies,and scalable implementation strategies in high-stress clinical settings.This review underscores MBSR’s potential as a sustainable,evidence-based tool to enhance emergency department nurses’mental health and professional performance,advocating for broader adoption and further refinement of its practical applications.
基金supported by an Innovation Fund for Medical Sciences of the Chinese Academy of Medical Sciences (Grant No.2019-I2M-2-007).
文摘Objective:Postpartum nutrition plays a critical role in maternal recovery and long-term health.However,the nutritional status of working mothers in the postpartum period remains understudied.This study aimed to assess the dietary quality of postpartum women in urban Beijing,identify occupational-related factors influencing their diet,and explore potential interventions to improve maternal nutrition during the postpartum period.Methods:In this cross-sectional analysis,554 women one year after delivery were recruited from ten community health centers.Sociodemographic,occupational and postpartum care variables were collected via questionnaire.Dietary intake over the preceding year was assessed using a food frequency questionnaire.The modified dietary balance index for postpartum women were used for dietary quality assessment.Results:The study revealed severe dietary imbalances among postpartum women,characterized by excessive consumption of cereals,eggs,and meats,while their intake of vegetables,fruits,and dairy products was inadequate.According to dietary balance index for postpartum women,66.25%of mothers showed varying degrees of excessive intake.45.31%of mothers experienced varying levels of insufficient intake,with only 19.86%of participants having a relatively balanced diet.Occupational differences were observed,with women in the commercial employment group showing higher levels of excessive food intake.The analysis of influencing factors showed that family monthly income,maternity leave,and postpartum care significantly affected the dietary quality.Conclusions:Postpartum women in Beijing experience widespread dietary imbalances,with both excesses and deficiencies.Occupational context and related factors significantly shape diet quality.These findings highlight the need for targeted nutritional interventions tailored to the specific challenges of different occupational groups.
基金supported by the Key Research and Development Program of the Ministry of Science and Technology of China(grant number:2016YF0900605)the Key Research and Development Program of Hebei Province(grant number:192777129D)+1 种基金the Joint Fund for Iron and Steel of the Natural Science Foundation of Hebei Province(grant number:H2016209058)the National Natural Science Foundation for Regional Joint Fund of China(grant number:U22A20364)。
文摘Objective We aimed to investigate the patterns of fasting blood glucose(FBG)trajectories and analyze the relationship between various occupational hazard factors and FBG trajectories in male steelworkers.Methods The study cohort included 3,728 workers who met the selection criteria for the Tanggang Occupational Cohort(TGOC)between 2017 and 2022.A group-based trajectory model was used to identify the FBG trajectories.Environmental risk scores(ERS)were constructed using regression coefficients from the occupational hazard model as weights.Univariate and multivariate logistic regression analyses were performed to explore the effects of occupational hazard factors using the ERS on FBG trajectories.Results FBG trajectories were categorized into three groups.An association was observed between high temperature,noise exposure,and FBG trajectory(P<0.05).Using the first quartile group of ERS1 as a reference,the fourth quartile group of ERS1 had an increased risk of medium and high FBG by 1.90and 2.21 times,respectively(odds ratio[OR]=1.90,95%confidence interval[CI]:1.17–3.10;OR=2.21,95%CI:1.09–4.45).Conclusion An association was observed between occupational hazards based on ERS and FBG trajectories.The risk of FBG trajectory levels increase with an increase in ERS.
