BACKGROUND Emotional reactions,such as anxiety,irritability,and aggressive behavior,have attracted clinical attention as behavioral and emotional problems in preschool-age children.AIM To investigate the current statu...BACKGROUND Emotional reactions,such as anxiety,irritability,and aggressive behavior,have attracted clinical attention as behavioral and emotional problems in preschool-age children.AIM To investigate the current status of family rearing,parental stress,and behavioral and emotional problems of preschool children and to analyze the mediating effect of the current status of family rearing on parental stress and behavioral/emo-tional problems.METHODS We use convenience sampling to select 258 preschool children in the physical examination center of our hospital from October 2021 to September 2023.The children and their parents were evaluated using a questionnaire survey.Pearson's correlation was used to analyze the correlation between child behavioral and emotional problems and parental stress and family rearing,and the structural equation model was constructed to test the mediating effect.RESULTS The score for behavioral/emotional problems of 258 preschool children was(27.54±3.63),the score for parental stress was(87.64±11.34),and the score for parental family rearing was(31.54±5.24).There was a positive correlation between the behavioral and emotional problems of the children and the“hostile/mandatory”parenting style;meanwhile,showed a negative correlation with the“support/participation”parenting style(all P<0.05).The intermediary effect value between the family upbringing of parents in parental stress and children's behavior problems was 29.89%.CONCLUSION Parental family upbringing has a mediating effect between parental stress and behavioral and emotional problems of children.Despite paying attention to the behavioral and emotional problems of preschool-age children,clinical medical staff should provide correct and reasonable parenting advice to their parents to promote the mental health of preschool-age children.展开更多
Background Ongoing debates question the harm of internet use with the evolving technology,as many individuals transition from regular to problematic internet use(PIU).The habenula(Hb),located between the thalamus and ...Background Ongoing debates question the harm of internet use with the evolving technology,as many individuals transition from regular to problematic internet use(PIU).The habenula(Hb),located between the thalamus and the third ventricle,is implicated in various psychiatric disorders.In addition,personality features have been suggested to play a role in the pathophysiology of PIU.Aims This study aimed to investigate Hb volumetry in individuals with subclinical PIU and the mediating effect of personality traits on this relationship.Methods 110 healthy adults in this cross-sectional study underwent structural magnetic resonance imaging.Hb segmentation was performed using a deep learning technique.The Internet Addiction Test(IAT)and the NEO Five-Factor Inventory were used to assess the PIU level and personality,respectively.Partial Spearman's correlation analyses were performed to explore the reiationships between Hb volumetry,IAT and NEO.Multiple regression analysis was applied to identify personality traits that predict IAT scores.The significant trait was then treated as a mediator between Hb volume and IAT correlation in mediation analysis with a bootstrap value of 5000.Results Relative Hb volume was negatively correlated with IAT scores(partial rho=-0.142,p=0.009).The IAT score was positively correlated with neuroticism(partial rho=0.430,p<0.001)and negatively correlated with extraversion,agreeableness and conscientiousness(partial rho=-0.213,p<0.001;partial rho=-0.279,p<0.001;and partial rho=-0.327,p<0.001).There was a significant indirect effect of Hb volume on this model(β=-0.061,p=0.048,boot 95%confidence interval:-0.149 to-0.001).Conclusions This study uncovered a crucial link between reduced Hb volume and heightened PIU.Our findings highlight neuroticism as a key risk factor for developing PIU.Moreover,neuroticism was shown to mediate the relationship between Hb volume and PIU tendency,offering valuable insight into the complexities of this interaction.展开更多
Background:The phenomenon of academic anxiety has been demonstrated to exert a considerable influence on students’academic engagement,leading to the emergence of a phenomenon known as“learned helplessness”and under...Background:The phenomenon of academic anxiety has been demonstrated to exert a considerable influence on students’academic engagement,leading to the emergence of a phenomenon known as“learned helplessness”and undermining the selfconfidence and motivation of high school students.Using acceptance-rejection theory,this study elucidated how a rejective parenting style affects Chinese high school students’academic anxiety and explored the urban-rural heterogeneity of this relationship.Methods:Data were analyzed using a stratified whole-cluster random sampling method.There are a total of 30,000 high school students in the three regions of northern and central China(from Shanxi,Hebei and Henan).A sample of 2286 high school students aged 14–19 years was ultimately selected from 2760 respondents for this investigation,which was conducted at the beginning of the 2023 school year.Pearson correlation,ordinary least squares(OLS)regression analysis,path analysis,and Fisher’s permutation test(FPT)were used to examine the effects of rejective parenting style on high school students’academic anxiety.Results:Results indicated a significant positive predictive effect between rejective parenting style and academic anxiety among high school students(β=0.815,t=116.211,p<0.001).Students’self-concept was significantly positively related to positive coping style(β=0.424,t=21.208,p<0.001)and chain-mediated this relationship.Therefore,this parenting style may indirectly mitigate academic anxiety through these mediators.The study also found that the effect of rejective parenting style on academic anxiety varied by students’residential background and was more pronounced in urban areas(0.226)than in rural areas(0.130).Conclusion:The research underscores the imperative for Chinese families to reexamine their utilization of rejection parenting and to prioritize the cultivation of students’intrinsic attributes.These findings offer a theoretical framework and practical evidence for policymakers and educators to develop efficacious and targeted interventions.In particular,greater attention should be directed towards the discrepancies in the manifestation of emotional and academic anxiety between urban and rural students,and prompt guidance should be furnished.展开更多
The present study examined how students＇ intrinsic and extrinsic value promotes their foreign language proficiency via the mediation effect of self-efficacy beliefs. A total of 1,036 Chinese eighth graders answered a...The present study examined how students＇ intrinsic and extrinsic value promotes their foreign language proficiency via the mediation effect of self-efficacy beliefs. A total of 1,036 Chinese eighth graders answered an English proficiency test and questionnaires assessing motivational beliefs. Structural equation modelling results with bootstrapping procedures revealed that intrinsic value can directly and indirectly influence foreign language proficiency via partial mediation effect of self-efficacy while extrinsic value can only directly influence foreign language proficiency with a small magnitude. Moreover, there is no gender difference in the mediation model. Our findings suggested that intrinsic value can help students improve foreign language proficiency by improving their self-efficacy beliefs. The findings contribute to the documents of self-determination theory and hold substantive theoretical and practical implications for foreign language teachers.展开更多
Colorectal cancer(CRC)poses significant physical and psychological challenges that necessitate an exploration of factors influencing post-traumatic growth(PTG)for patient well-being.This study aims to investigate the ef...Colorectal cancer(CRC)poses significant physical and psychological challenges that necessitate an exploration of factors influencing post-traumatic growth(PTG)for patient well-being.This study aims to investigate the effects of positive psychological capital(PsyCap)and perceived stress on mediating the social support-PTG relation among 673 CRC patients.Social support,positive PsyCap,perceived stress,and PTG were assessed through questionnaires.The results indicated a direct prediction effect of social support on PTG(LICI=0.481,ULCI=0.644),with the direct effect being 59.5%.Both positive PsyCap and perceived stress exerted a mediating role in the correlation between social support and PTG,with the mediating effects occupying 29.4%(LICI=0.217,ULCI=0.343)and 5.7%(LICI=0.030,ULCI=0.082),respectively.Positive PsyCap further had a chain mediating effect on perceived stress(LICI=0.031,ULCI=0.074),with the chain effect accounting for 5.4%.The total impact of social support on PTG was 100%(LICI=0.882,ULCI=1.008).This model underscores the pivotal role of social support in promoting PTG in CRC patients.Positive PsyCap serves as a crucial mediator in the social support-PTG link,with perceived stress playing a sequential mediating role.Thesefindings suggest that strengthening social support networks and cultivating positive PsyCap may reduce perceived stress and promote the development of PTG in CRC patients.Consequently,intervention programs are recommended to improve the psychosocial well-being of CRC patients.展开更多
This study investigates the impact of investor protection on corporate R&D investment using panel data from Chinese A-share listed companies spanning 2015 to 2022.By employing OLS regression,mediation,and moderati...This study investigates the impact of investor protection on corporate R&D investment using panel data from Chinese A-share listed companies spanning 2015 to 2022.By employing OLS regression,mediation,and moderation analyses,the results demonstrate that robust investor protection mechanisms significantly enhance corporate R&D expenditures.The mediation analysis reveals that investor protection alleviates financing constraints and improves information disclosure quality,both of which serve as key channels for fostering R&D investment.Furthermore,internal control systems and media attention are identified as positive moderators,amplifying the beneficial effects of investor protection on R&D.In contrast,the equity Herfindahl index(HHI)does not exhibit a significant moderating role.The study also highlights that financial leverage,profitability,and equity concentration negatively influence R&D,while revenue growth exerts a positive effect.These findings underscore the critical role of investor protection in driving corporate innovation and sustainable growth,offering valuable insights for policymakers and corporate managers aiming to optimize R&D strategies through improved governance frameworks.展开更多
To investigate the associations between isocarbophos and isofenphos with impaired fasting glucose(IFG)and type 2 diabetes mellitus(T2DM),and to assess the mediation roles of inflammation cells.There were 2701 particip...To investigate the associations between isocarbophos and isofenphos with impaired fasting glucose(IFG)and type 2 diabetes mellitus(T2DM),and to assess the mediation roles of inflammation cells.There were 2701 participants in the case-control study,including 896 patients with T2DM,900 patients with IFG,905 subjects with NGT.Plasma isocarbophos and isofenphos concentrationsweremeasured using gas chromatography and triple quadrupole tandem mass spectrometry.Generalized linear models were used to calculate the relationships between plasma isofenphos and isocarbophos levels with inflammatory factor levels and T2DM.Inflammatory cell was used as mediators to estimate the mediating effects on the above associations.Isocarbophos and isofenphos were positively related with T2DM after adjusting for other factors.The odds ratio(95%confidence interval)(OR(95%CI))for T2DM was 1.041(1.015,1.068)and for IFG was 1.066(1.009,1.127)per unit rise in ln-isocarbophos.The prevalence of T2DM increased by 6.4%for every 1 unit more of ln-isofenphos(OR(95%CI):1.064(1.041,1.087)).Additionally,a 100%rise in ln-isocarbophos was linked to 3.3%higher ln-HOMA2IR and a 0.029 mmol/L higher glycosylated hemoglobin(HbA1c)(95%CI:0.007,0.051).While a 100%rise in ln-isofenphos was linked to increase in ln-HOMA2 and ln-HOMA2IR of 5.8%and 3.4%,respectively.Furthermore,white blood cell(WBC)and neutrophilic(NE)were found to be mediators in the relationship between isocarbophos and T2DM,and the corresponding proportions were 17.12%and 17.67%,respectively.Isofenphos and isocarbophos are associated with IFG and T2DM in the rural Chinese population,WBC and NE have a significant role in this relationship.展开更多
Objective:To analyze the mediating effect of psychological flexibility between death anxiety and quality of life in cancer patients.Methods:A convenience sampling method was used to select cancer patients who received...Objective:To analyze the mediating effect of psychological flexibility between death anxiety and quality of life in cancer patients.Methods:A convenience sampling method was used to select cancer patients who received treatment at our hospital from January 2022 to January 2024,by the inclusion and exclusion criteria.General information,psychological flexibility,death anxiety,and quality of life scores were collected for analysis.Result:The psychological flexibility and quality of life scores of cancer patients with an annual family income≤100,000 RMB were significantly lower than those of cancer patients with an annual family income>100,000 RMB(P<0.05),while the death anxiety scores were significantly lower for the former group as well(P<0.05).Cancer patients staged as Ⅰ-Ⅱ had significantly higher psychological flexibility and quality of life scores than those staged as Ⅲ-Ⅳ(P<0.05),while their death anxiety scores were significantly lower(P<0.05).Psychological flexibility in cancer patients was negatively correlated with death anxiety(r=-0.614,P<0.05)and positively correlated with quality of life(r=0.628,P<0.05),while death anxiety was negatively correlated with quality of life(r=-0.112,P<0.05).The direct effect of death anxiety on quality of life was-0.232,accounting for 58.32%of the total effect.The mediating effect of psychological flexibility between death anxiety and quality of life was-0.218,accounting for 41.83%of the total effect.Conclusion:Death anxiety can directly affect the quality of life of cancer patients,and it can also indirectly affect the quality of life through psychological flexibility.Clinicians should promptly address patients’death anxiety and provide interventions to enhance psychological flexibility,thereby improving the quality of life.展开更多
BACKGROUND Work-family conflicts and daytime sleepiness are related to the risk of suicide.At present,no study has investigated the relationship between nurses’work-family behavioral role conflict and suicide risk.Mo...BACKGROUND Work-family conflicts and daytime sleepiness are related to the risk of suicide.At present,no study has investigated the relationship between nurses’work-family behavioral role conflict and suicide risk.Moreover,it has not been confirmed whether,considering the effect of daytime sleepiness on suicide risk,daytime sleepiness mediates the effect of work-family behavioral role conflict and suicide risk.AIM To explore the pathway relationships among nurses'work-family behavioral role conflict,daytime sleepiness,and suicide risk.METHODS Convenience and purposive sampling methods were used to select 750 nurses from six provinces,including Jiangxi,Sichuan,and Shanxi.The work-family behavioral role conflict scale,the Chinese adult daytime sleepiness scale,and the suicide behavior questionnaire were used for the survey.The data were statistically analyzed via SPSS 25.0 software,Pearson correlation analysis was used to explore the correlations between the variables,the PROCESS 4.0 program was used for the mediation effect analysis,and the mediation effect model was tested via the bootstrap method.RESULTS Nurses'work-family behavioral role conflict and daytime sleepiness were positively correlated with suicide risk(r=734,0.717).Work-family behavioral role conflict positively predicted suicide risk(β=0.118),and daytime sleepiness positively predicted suicide risk(β=0.152).Daytime sleepiness partially mediated the role of nurses'work-family behavioral role conflict and suicide risk,with a mediation effect value of 0.046 and a mediation effect accounting for 38.98%.CONCLUSION The results of the Pearson correlation analysis and mediation effect analysis revealed that nurses'work-family behavioral role conflict has a direct effect on suicide risk and indirectly affects suicide risk through daytime drowsiness symptoms.展开更多
As a novel economic paradigm that drives high-quality economic development,the digital economy(DE)can potentially significantly enhance the utilization efficiency of ecological resources and improve human well-being.B...As a novel economic paradigm that drives high-quality economic development,the digital economy(DE)can potentially significantly enhance the utilization efficiency of ecological resources and improve human well-being.Based on panel data from 285 prefecture-level cities in China spanning 2011-2021,this study empirically investigates the direct effects,transmission mechanisms,and spatial spillover effects of the DE on ecological welfare performance(EWP)using benchmark regression,intermediary effects,and spatial Durbin models.The results show that the DE significantly improved EWP in Chinese cities.This conclusion remains valid even after controlling for relevant influencing factors.Two transmission paths—upgrading of the industrial structure(UIS)and green innovation(GI)—significantly impacted EWP,as verified by the mediation effect model.Additionally,the mediating effect of the UIS was stronger than that of GI.Spatial heterogeneity tests show that the DE had significant effects on the EWP of eastern cities,with little impact on the central and western cities.Accordingly,grounded in regional developmental disparities,the empowering effects of the DE must be fully harnessed to foster an ecological civilization and enhance the well-being of the populace.展开更多
Objective:Investigating the Mediating Role of Pain in the Relationship Between Sleep Quality and Health-Related Quality of Life Among Elderly Patients with Chronic Diseases.Methods:Using data from the 2018 China Healt...Objective:Investigating the Mediating Role of Pain in the Relationship Between Sleep Quality and Health-Related Quality of Life Among Elderly Patients with Chronic Diseases.Methods:Using data from the 2018 China Health and Retirement Longitudinal Study(CHARLS),this study included 3,284 participants aged 60 years or older with chronic diseases.The sleep quality,pain status,health-related quality of life,and demographic-related data of these elderly patients were obtained.Pearson correlation analysis was conducted to assess the bivariate relationships among the variables.The mediating role of pain in the sleep quality-HRQoL relationship was tested using linear regression models,complemented by bootstrap sampling to verify the indirect effect.Results:Sleep quality was positively associated with health-related quality of life(r=0.218,p<0.001).Conversely,pain demonstrated significant negative correlations with both sleep quality(r=-0.496,p<0.001)and health-related quality of life(r=-0.067,p<0.001).The mediating effect results showed that pain played a partial mediating role between sleep quality and health-related quality of life in elderly patients with chronic diseases(effect value=0.049),and the mediating effect accounted for 23.33%.Conclusion:Pain is a mediating variable between sleep quality and health-related quality of life in elderly patients with chronic diseases.This suggests that clinical practice should incorporate pain assessment into standard clinical care of elderly patients with sleep disorders and chronic diseases.By alleviating pain,sleep quality can be improved,and subsequently,their health-related quality of life can be enhanced.展开更多
Growing evidences showed that heavy metals exposure may be associated with metabolic diseases.Nevertheless,themechanism underlying arsenic(As)exposure and metabolic syndrome(MetS)risk has not been fully elucidated.So ...Growing evidences showed that heavy metals exposure may be associated with metabolic diseases.Nevertheless,themechanism underlying arsenic(As)exposure and metabolic syndrome(MetS)risk has not been fully elucidated.So we aimed to prospectively investigate the role of serum uric acid(SUA)on the association between blood As exposure and incident MetS.A sample of 1045 older participants in a community in China was analyzed.We determined As at baseline and SUA concentration at follow-up in the Yiwu Elderly Cohort.MetS events were defined according to the criteria of the International Diabetes Federation(IDF).Generalized linear model with log-binominal regression model was applied to estimate the association of As with incident MetS.To investigate the role of SUA in the association between As andMetS,amediation analysiswas conducted.In the fully adjusted log-binominal model,per interquartile range increment of As,the risk of MetS increased 1.25-fold.Compared with the lowest quartile of As,the adjusted relative risk(RR)of MetS in the highest quartile was 1.42(95%confidence interval,CI:1.03,2.00).Additionally,blood As was positively associated with SUA,while SUA had significant association with MetS risk.Further mediation analysis demonstrated that the association of As and MetS risk was mediated by SUA,with the proportion of 15.7%.Our study found higher As was remarkably associated with the elevated risk of MetS in the Chinese older adults population.Mediation analysis indicated that SUA might be a mediator in the association between As exposure and MetS.展开更多
BACKGROUND Several studies have suggested a close link between depression,overweight,and new-onset diabetes,particularly among middle-aged and older populations;however,the causal associations remain poorly understood...BACKGROUND Several studies have suggested a close link between depression,overweight,and new-onset diabetes,particularly among middle-aged and older populations;however,the causal associations remain poorly understood.AIM To investigate the role of overweight in mediating the association between depression and new-onset diabetes in middle-aged and older populations.METHODS Data of 9426 individuals aged≥50 years from the 1998-2016 Health and Retirement Study database were analyzed.Weighted logistic regression was employed to obtain odds ratios(ORs)and 95%confidence intervals(95%CIs)for depression and new-onset diabetes in the middle-aged and older populations.Mediation analysis and the Sobel test were used to test the mediating effects of overweight between depression and the risk of new-onset diabetes.RESULTS New-onset diabetes was identified in 23.6%of the study population.Depression was significantly associated with new-onset diabetes(OR:1.18,95%CI:1.03-1.35,P value:0.014).Further adjustment for overweight attenuated the effect of depression on new-onset diabetes to 1.14(95%CI:1.00-1.30,P=0.053),with a significant mediating effect(P of Sobel test=0.003).The mediation analysis demonstrated that overweight accounted for 61%in depression for the risk of new-onset diabetes,with overweight having a partially mediating role in the depression-to-diabetes pathway.CONCLUSION New-onset diabetes was not necessarily a direct complication of depression;rather,depression led to behaviors that increase the risk of overweight and,consequently,new-onset diabetes.展开更多
Background:Childhood environmental unpredictability(CEU)is crucial to personal development,profoundly influence physical and psychological growth particularly,and psychopathy is recognized as a dark personality trait....Background:Childhood environmental unpredictability(CEU)is crucial to personal development,profoundly influence physical and psychological growth particularly,and psychopathy is recognized as a dark personality trait.The aim of this study is to investigate the effects of insecure attachment and life history strategy(LHS)on the relationship between CEU and psychopathy by establishing a sequential mediation model based on evolutionary life history theory and cognitive-affective personality system.Methods:A group of 532 undergraduates completed the measurements for CEU,insecure attachment,LHS,and psychopathy,and Bootstrap mediation test through SPSS 25.0 and PROCESS macro tool was used to examine the relationship among these variables.Results:The results revealed positive relations between CEU and insecure attachment(β=0.87,p<0.001),CEU and LHS(β=0.11,p<0.001),and CEU and psychopathy(β=0.14,p<0.001).Insecure attachment was also positively associated with LHS(β=0.62,p<0.001)and psychopathy(β=0.04,p<0.001).In addition,LHS was significantly associated with psychopathy(β=0.08,p<0.001).The relationship between CEU and psychopathy is mediated independently and sequentially by insecure attachment and LHS.Conclusion:The current research shows the relationship between CEU and psychopathy,as well as the mechanism of insecure attachment and life history strategy as mediators.展开更多
With the development of minimally invasive gynecological technology,hysteroscopic surgery has been widely used in the treatment of gynecological diseases due to its advantages of rapid recovery and minimal trauma.From...With the development of minimally invasive gynecological technology,hysteroscopic surgery has been widely used in the treatment of gynecological diseases due to its advantages of rapid recovery and minimal trauma.From the perspective of patients undergoing hysteroscopic surgery,this paper explores the influence of their psychological security on quality of life,analyzes the mediating effect of social support,and puts forward specific countermeasures and suggestions.The purpose is to improve the psychological security and quality of life of patients undergoing hysteroscopic surgery,and provide reference for the subsequent development of hysteroscopic surgery.展开更多
Objective To study the importance of digital economy to promote the innovation development of enterprises under the background of the era of information technology reform.Methods The maximum entropy method was used to...Objective To study the importance of digital economy to promote the innovation development of enterprises under the background of the era of information technology reform.Methods The maximum entropy method was used to measure the comprehensive level of digital economy development at provincial level.Besides,the impact of digital economy on the innovation performance of pharmaceutical industry was investigated empirically by using A-share pharmaceutical companies listed in China from 2013 to 2020 as a research sample,and the mediating mechanism of R&D investment and financing constraints on the impact was examined.Results and Conclusion It is found that digital economy is significantly and positively related to the innovation performance of enterprises.The mechanism test shows that digital economy improves innovation performance through the expansion effect of R&D investment and alleviating financing constraints.In the context that digital economy has become a new driving force for enterprise innovation,the combination of digital economy and real economy should be actively promoted,R&D investment in pharmaceutical enterprises should be increased,and financing channels should be broadened.展开更多
Data mining has the potential to provide information for improving clinical acupuncture strategies by uncovering hidden rules between acupuncture manipulation and therapeutic effects in a data set. In this study, we p...Data mining has the potential to provide information for improving clinical acupuncture strategies by uncovering hidden rules between acupuncture manipulation and therapeutic effects in a data set. In this study, we performed acupuncture on 30 patients with hemiplegia due to acute ischemic stroke. All participants were pre-screened to ensure that they exhibited immediate responses to acupuncture. We used a twirling reinforcing acupuncture manipulation at the specific lines between the bilateral Baihui（GV20） and Taiyang（EX-HN5）. We collected neurologic deficit score, simplified Fugl-Meyer assessment score, muscle strength of the proximal and distal hemiplegic limbs, ratio of the maximal H-reflex to the maximal M-wave（Hmax/Mmax）, muscle tension at baseline and immediately after treatment, and the syndromes of traditional Chinese medicine at baseline. We then conducted data mining using an association algorithm and an artificial neural network backpropagation algorithm. We found that the twirling reinforcing manipulation had no obvious therapeutic difference in traditional Chinese medicine syndromes of ＂Deficiency and Excess＂. The change in the muscle strength of the upper distal and lower proximal limbs was one of the main factors affecting the immediate change in Fugl-Meyer scores. Additionally, we found a positive correlation between the muscle tension change of the upper limb and Hmax/Mmax immediate change, and both positive and negative correlations existed between the muscle tension change of the lower limb and immediate Hmax/Mmax change. Additionally, when the difference value of muscle tension for the upper and lower limbs was 〉 0 or 〈 0, the difference value of Hmax/Mmax was correspondingly positive or negative, indicating the scalp acupuncture has a bidirectional effect on muscle tension in hemiplegic limbs. Therefore, acupuncture with twirling reinforcing manipulation has distinct effects on acute ischemic stroke patients with different symptoms or stages of disease. Improved muscle tension in the upper and lower limbs, reflected by the variation in the Hmax/Mmax ratio, is crucial for recovery of motor function from hemiplegia.展开更多
As promising anodes for sodium-ion batteries,metal sulfides ubiquitously suffer from low-rate and high-plateau issues,greatly hindering their application in full-cells.Herein,exemplifying carbon nanotubes(CNTs)-string...As promising anodes for sodium-ion batteries,metal sulfides ubiquitously suffer from low-rate and high-plateau issues,greatly hindering their application in full-cells.Herein,exemplifying carbon nanotubes(CNTs)-stringed metal sulfides superstructure(CSC)assembled by nano-dispersed SnS_(2) and CoS_(2) phases,cocktail mediation effect similar to that of high-entropy materials is initially studied in ether-based electrolyte to solve the challenges.The high nano-dispersity of metal sulfides in CSC anode underlies the cocktail-like mediation effect,enabling the circumvention of intrinsic drawbacks of different metal sulfides.By utilizing ether-based electrolyte,the reversibility of metal sulfides is greatly improved,sustaining a long-life effectivity of cocktail-like mediation.As such,CSC effectively overcomes low-rate flaw of SnS_(2) and highplateau demerit of CoS_(2),simultaneously realizes a high rate and a low plateau.In half-cells,CSC delivers an ultrahigh-rate capability of 327.6 mAh g^(−1) anode at 20 A g^(−1),far outperforming those of monometallic sulfides(SnS_(2),CoS_(2))and their mixtures.Compared with CoS_(2) phase and SnS_(2)/CoS_(2) mixture,CSC shows remarkably lowered average charge voltage up to ca.0.62 V.As-assembled CSC//Na1.5VPO4.8F0.7 full-cell shows a good rate capability(0.05~1.0 A g^(−1),120.3 mAh g^(−1) electrode at 0.05 A g^(−1))and a high average discharge voltage up to 2.57 V,comparable to full-cells with alloy-type anodes.Kinetics analysis verifies that the cocktail-like mediation effect largely boosts the charge transfer and ionic diffusion in CSC,compared with single phase and mixed phases.Further mechanism study reveals that alternative and complementary electrochemical processes between nano-dispersed SnS_(2) and CoS_(2) phases are responsible for the lowered charge voltage of CSC.This electrolyte/structure-dependent cocktail-like mediation effect effectively enhances the practicability of metal sulfide anodes,which will boost the development of high-rate/-voltage sodium-ion full batteries.展开更多
The effect of investor sentiment on stock volatility is a highly attractive research question in both the academic field and the real financial industry.With the proposal of China’s"dual carbon"target,green...The effect of investor sentiment on stock volatility is a highly attractive research question in both the academic field and the real financial industry.With the proposal of China’s"dual carbon"target,green stocks have gradually become an essential branch of Chinese stock markets.Focusing on 106 stocks from the new energy,environmental protection,and carbon–neutral sectors,we construct two investor sentiment proxies using Internet text and stock trading data,respectively.The Internet sentiment is based on posts from Eastmoney Guba,and the trading sentiment comes from a variety of trading indicators.In addition,we divide the realized volatility into continuous and jump parts,and then investigate the effects of investor sentiment on different types of volatilities.Our empirical findings show that both sentiment indices impose significant positive impacts on realized,continuous,and jump volatilities,where trading sentiment is the main factor.We further explore the mediating effect of information asymmetry,measured by the volume-synchronized probability of informed trading(VPIN),on the path of investor sentiment affecting stock volatility.It is evidenced that investor sentiments are positively correlated with the VPIN,and they can affect volatilities through the VPIN.We then divide the total sample around the coronavirus disease 2019(COVID-19)pandemic.The empirical results reveal that the market volatility after the COVID-19 pandemic is more susceptible to investor sentiments,especially to Internet sentiment.Our study is of great significance for maintaining the stability of green stock markets and reducing market volatility.展开更多
基金Supported by the Shijiazhuang Science and Technology Research and Development Program,No.221460383.
文摘BACKGROUND Emotional reactions,such as anxiety,irritability,and aggressive behavior,have attracted clinical attention as behavioral and emotional problems in preschool-age children.AIM To investigate the current status of family rearing,parental stress,and behavioral and emotional problems of preschool children and to analyze the mediating effect of the current status of family rearing on parental stress and behavioral/emo-tional problems.METHODS We use convenience sampling to select 258 preschool children in the physical examination center of our hospital from October 2021 to September 2023.The children and their parents were evaluated using a questionnaire survey.Pearson's correlation was used to analyze the correlation between child behavioral and emotional problems and parental stress and family rearing,and the structural equation model was constructed to test the mediating effect.RESULTS The score for behavioral/emotional problems of 258 preschool children was(27.54±3.63),the score for parental stress was(87.64±11.34),and the score for parental family rearing was(31.54±5.24).There was a positive correlation between the behavioral and emotional problems of the children and the“hostile/mandatory”parenting style;meanwhile,showed a negative correlation with the“support/participation”parenting style(all P<0.05).The intermediary effect value between the family upbringing of parents in parental stress and children's behavior problems was 29.89%.CONCLUSION Parental family upbringing has a mediating effect between parental stress and behavioral and emotional problems of children.Despite paying attention to the behavioral and emotional problems of preschool-age children,clinical medical staff should provide correct and reasonable parenting advice to their parents to promote the mental health of preschool-age children.
基金funded by a Grant-in-Aid for Scientific Research(B)(Japan Society for The Promotion of Science,21H02849)Grant-in-Aid for Scientific Research(C)(Japan Society for The Promotion of Science,23K07013)+2 种基金Grant-in-Aid for Transformative Research Areas(A)(Japan Society for The Promotion of Science,JP21H05173)Grant-in-Aid by the Smoking Research FoundationGrant-in-Aid by the Telecommunications Advancement Foundation.
文摘Background Ongoing debates question the harm of internet use with the evolving technology,as many individuals transition from regular to problematic internet use(PIU).The habenula(Hb),located between the thalamus and the third ventricle,is implicated in various psychiatric disorders.In addition,personality features have been suggested to play a role in the pathophysiology of PIU.Aims This study aimed to investigate Hb volumetry in individuals with subclinical PIU and the mediating effect of personality traits on this relationship.Methods 110 healthy adults in this cross-sectional study underwent structural magnetic resonance imaging.Hb segmentation was performed using a deep learning technique.The Internet Addiction Test(IAT)and the NEO Five-Factor Inventory were used to assess the PIU level and personality,respectively.Partial Spearman's correlation analyses were performed to explore the reiationships between Hb volumetry,IAT and NEO.Multiple regression analysis was applied to identify personality traits that predict IAT scores.The significant trait was then treated as a mediator between Hb volume and IAT correlation in mediation analysis with a bootstrap value of 5000.Results Relative Hb volume was negatively correlated with IAT scores(partial rho=-0.142,p=0.009).The IAT score was positively correlated with neuroticism(partial rho=0.430,p<0.001)and negatively correlated with extraversion,agreeableness and conscientiousness(partial rho=-0.213,p<0.001;partial rho=-0.279,p<0.001;and partial rho=-0.327,p<0.001).There was a significant indirect effect of Hb volume on this model(β=-0.061,p=0.048,boot 95%confidence interval:-0.149 to-0.001).Conclusions This study uncovered a crucial link between reduced Hb volume and heightened PIU.Our findings highlight neuroticism as a key risk factor for developing PIU.Moreover,neuroticism was shown to mediate the relationship between Hb volume and PIU tendency,offering valuable insight into the complexities of this interaction.
基金funded by the Key Discipline Construction Project of the Liaoning Provincial Social Science Planning Fund(grant ID:L24ZD042)。
文摘Background:The phenomenon of academic anxiety has been demonstrated to exert a considerable influence on students’academic engagement,leading to the emergence of a phenomenon known as“learned helplessness”and undermining the selfconfidence and motivation of high school students.Using acceptance-rejection theory,this study elucidated how a rejective parenting style affects Chinese high school students’academic anxiety and explored the urban-rural heterogeneity of this relationship.Methods:Data were analyzed using a stratified whole-cluster random sampling method.There are a total of 30,000 high school students in the three regions of northern and central China(from Shanxi,Hebei and Henan).A sample of 2286 high school students aged 14–19 years was ultimately selected from 2760 respondents for this investigation,which was conducted at the beginning of the 2023 school year.Pearson correlation,ordinary least squares(OLS)regression analysis,path analysis,and Fisher’s permutation test(FPT)were used to examine the effects of rejective parenting style on high school students’academic anxiety.Results:Results indicated a significant positive predictive effect between rejective parenting style and academic anxiety among high school students(β=0.815,t=116.211,p<0.001).Students’self-concept was significantly positively related to positive coping style(β=0.424,t=21.208,p<0.001)and chain-mediated this relationship.Therefore,this parenting style may indirectly mitigate academic anxiety through these mediators.The study also found that the effect of rejective parenting style on academic anxiety varied by students’residential background and was more pronounced in urban areas(0.226)than in rural areas(0.130).Conclusion:The research underscores the imperative for Chinese families to reexamine their utilization of rejection parenting and to prioritize the cultivation of students’intrinsic attributes.These findings offer a theoretical framework and practical evidence for policymakers and educators to develop efficacious and targeted interventions.In particular,greater attention should be directed towards the discrepancies in the manifestation of emotional and academic anxiety between urban and rural students,and prompt guidance should be furnished.
基金funded by National Education Science “13th Five-Year” Planning Key Project of Ministry of Education in China(Grant No.DHA160310)~~
文摘The present study examined how students＇ intrinsic and extrinsic value promotes their foreign language proficiency via the mediation effect of self-efficacy beliefs. A total of 1,036 Chinese eighth graders answered an English proficiency test and questionnaires assessing motivational beliefs. Structural equation modelling results with bootstrapping procedures revealed that intrinsic value can directly and indirectly influence foreign language proficiency via partial mediation effect of self-efficacy while extrinsic value can only directly influence foreign language proficiency with a small magnitude. Moreover, there is no gender difference in the mediation model. Our findings suggested that intrinsic value can help students improve foreign language proficiency by improving their self-efficacy beliefs. The findings contribute to the documents of self-determination theory and hold substantive theoretical and practical implications for foreign language teachers.
文摘Colorectal cancer(CRC)poses significant physical and psychological challenges that necessitate an exploration of factors influencing post-traumatic growth(PTG)for patient well-being.This study aims to investigate the effects of positive psychological capital(PsyCap)and perceived stress on mediating the social support-PTG relation among 673 CRC patients.Social support,positive PsyCap,perceived stress,and PTG were assessed through questionnaires.The results indicated a direct prediction effect of social support on PTG(LICI=0.481,ULCI=0.644),with the direct effect being 59.5%.Both positive PsyCap and perceived stress exerted a mediating role in the correlation between social support and PTG,with the mediating effects occupying 29.4%(LICI=0.217,ULCI=0.343)and 5.7%(LICI=0.030,ULCI=0.082),respectively.Positive PsyCap further had a chain mediating effect on perceived stress(LICI=0.031,ULCI=0.074),with the chain effect accounting for 5.4%.The total impact of social support on PTG was 100%(LICI=0.882,ULCI=1.008).This model underscores the pivotal role of social support in promoting PTG in CRC patients.Positive PsyCap serves as a crucial mediator in the social support-PTG link,with perceived stress playing a sequential mediating role.Thesefindings suggest that strengthening social support networks and cultivating positive PsyCap may reduce perceived stress and promote the development of PTG in CRC patients.Consequently,intervention programs are recommended to improve the psychosocial well-being of CRC patients.
文摘This study investigates the impact of investor protection on corporate R&D investment using panel data from Chinese A-share listed companies spanning 2015 to 2022.By employing OLS regression,mediation,and moderation analyses,the results demonstrate that robust investor protection mechanisms significantly enhance corporate R&D expenditures.The mediation analysis reveals that investor protection alleviates financing constraints and improves information disclosure quality,both of which serve as key channels for fostering R&D investment.Furthermore,internal control systems and media attention are identified as positive moderators,amplifying the beneficial effects of investor protection on R&D.In contrast,the equity Herfindahl index(HHI)does not exhibit a significant moderating role.The study also highlights that financial leverage,profitability,and equity concentration negatively influence R&D,while revenue growth exerts a positive effect.These findings underscore the critical role of investor protection in driving corporate innovation and sustainable growth,offering valuable insights for policymakers and corporate managers aiming to optimize R&D strategies through improved governance frameworks.
基金supported by the National Natural Science Foundation of China(Nos.42177415 and 21806146)the Scientific and Technological Innovation of Colleges and Universities in Henan Province Talent Support Program(No.22HASTIT044)the Young Backbone Teachers Programof Colleges and Universities in Henan Province(No.2021GGJS015).
文摘To investigate the associations between isocarbophos and isofenphos with impaired fasting glucose(IFG)and type 2 diabetes mellitus(T2DM),and to assess the mediation roles of inflammation cells.There were 2701 participants in the case-control study,including 896 patients with T2DM,900 patients with IFG,905 subjects with NGT.Plasma isocarbophos and isofenphos concentrationsweremeasured using gas chromatography and triple quadrupole tandem mass spectrometry.Generalized linear models were used to calculate the relationships between plasma isofenphos and isocarbophos levels with inflammatory factor levels and T2DM.Inflammatory cell was used as mediators to estimate the mediating effects on the above associations.Isocarbophos and isofenphos were positively related with T2DM after adjusting for other factors.The odds ratio(95%confidence interval)(OR(95%CI))for T2DM was 1.041(1.015,1.068)and for IFG was 1.066(1.009,1.127)per unit rise in ln-isocarbophos.The prevalence of T2DM increased by 6.4%for every 1 unit more of ln-isofenphos(OR(95%CI):1.064(1.041,1.087)).Additionally,a 100%rise in ln-isocarbophos was linked to 3.3%higher ln-HOMA2IR and a 0.029 mmol/L higher glycosylated hemoglobin(HbA1c)(95%CI:0.007,0.051).While a 100%rise in ln-isofenphos was linked to increase in ln-HOMA2 and ln-HOMA2IR of 5.8%and 3.4%,respectively.Furthermore,white blood cell(WBC)and neutrophilic(NE)were found to be mediators in the relationship between isocarbophos and T2DM,and the corresponding proportions were 17.12%and 17.67%,respectively.Isofenphos and isocarbophos are associated with IFG and T2DM in the rural Chinese population,WBC and NE have a significant role in this relationship.
文摘Objective:To analyze the mediating effect of psychological flexibility between death anxiety and quality of life in cancer patients.Methods:A convenience sampling method was used to select cancer patients who received treatment at our hospital from January 2022 to January 2024,by the inclusion and exclusion criteria.General information,psychological flexibility,death anxiety,and quality of life scores were collected for analysis.Result:The psychological flexibility and quality of life scores of cancer patients with an annual family income≤100,000 RMB were significantly lower than those of cancer patients with an annual family income>100,000 RMB(P<0.05),while the death anxiety scores were significantly lower for the former group as well(P<0.05).Cancer patients staged as Ⅰ-Ⅱ had significantly higher psychological flexibility and quality of life scores than those staged as Ⅲ-Ⅳ(P<0.05),while their death anxiety scores were significantly lower(P<0.05).Psychological flexibility in cancer patients was negatively correlated with death anxiety(r=-0.614,P<0.05)and positively correlated with quality of life(r=0.628,P<0.05),while death anxiety was negatively correlated with quality of life(r=-0.112,P<0.05).The direct effect of death anxiety on quality of life was-0.232,accounting for 58.32%of the total effect.The mediating effect of psychological flexibility between death anxiety and quality of life was-0.218,accounting for 41.83%of the total effect.Conclusion:Death anxiety can directly affect the quality of life of cancer patients,and it can also indirectly affect the quality of life through psychological flexibility.Clinicians should promptly address patients’death anxiety and provide interventions to enhance psychological flexibility,thereby improving the quality of life.
文摘BACKGROUND Work-family conflicts and daytime sleepiness are related to the risk of suicide.At present,no study has investigated the relationship between nurses’work-family behavioral role conflict and suicide risk.Moreover,it has not been confirmed whether,considering the effect of daytime sleepiness on suicide risk,daytime sleepiness mediates the effect of work-family behavioral role conflict and suicide risk.AIM To explore the pathway relationships among nurses'work-family behavioral role conflict,daytime sleepiness,and suicide risk.METHODS Convenience and purposive sampling methods were used to select 750 nurses from six provinces,including Jiangxi,Sichuan,and Shanxi.The work-family behavioral role conflict scale,the Chinese adult daytime sleepiness scale,and the suicide behavior questionnaire were used for the survey.The data were statistically analyzed via SPSS 25.0 software,Pearson correlation analysis was used to explore the correlations between the variables,the PROCESS 4.0 program was used for the mediation effect analysis,and the mediation effect model was tested via the bootstrap method.RESULTS Nurses'work-family behavioral role conflict and daytime sleepiness were positively correlated with suicide risk(r=734,0.717).Work-family behavioral role conflict positively predicted suicide risk(β=0.118),and daytime sleepiness positively predicted suicide risk(β=0.152).Daytime sleepiness partially mediated the role of nurses'work-family behavioral role conflict and suicide risk,with a mediation effect value of 0.046 and a mediation effect accounting for 38.98%.CONCLUSION The results of the Pearson correlation analysis and mediation effect analysis revealed that nurses'work-family behavioral role conflict has a direct effect on suicide risk and indirectly affects suicide risk through daytime drowsiness symptoms.
基金funded by the Natural Science Foundation of Shandong Province[Grant No.ZR2022MD104]Rizhao Natural Science Foundation Youth Fund Project[Grant No.RZ2021ZR36]Taishan Scholars Youth Expert Support Plan of Shandong Province[Grant No.tsqn202306183].
文摘As a novel economic paradigm that drives high-quality economic development,the digital economy(DE)can potentially significantly enhance the utilization efficiency of ecological resources and improve human well-being.Based on panel data from 285 prefecture-level cities in China spanning 2011-2021,this study empirically investigates the direct effects,transmission mechanisms,and spatial spillover effects of the DE on ecological welfare performance(EWP)using benchmark regression,intermediary effects,and spatial Durbin models.The results show that the DE significantly improved EWP in Chinese cities.This conclusion remains valid even after controlling for relevant influencing factors.Two transmission paths—upgrading of the industrial structure(UIS)and green innovation(GI)—significantly impacted EWP,as verified by the mediation effect model.Additionally,the mediating effect of the UIS was stronger than that of GI.Spatial heterogeneity tests show that the DE had significant effects on the EWP of eastern cities,with little impact on the central and western cities.Accordingly,grounded in regional developmental disparities,the empowering effects of the DE must be fully harnessed to foster an ecological civilization and enhance the well-being of the populace.
基金Henan Provincial Government-funded Excellent Clinical Medicine Talent Training Project(Project No.:ZF2024006)Hebei Province Medical Science Research Project Plan(Project No.:20240083)。
文摘Objective:Investigating the Mediating Role of Pain in the Relationship Between Sleep Quality and Health-Related Quality of Life Among Elderly Patients with Chronic Diseases.Methods:Using data from the 2018 China Health and Retirement Longitudinal Study(CHARLS),this study included 3,284 participants aged 60 years or older with chronic diseases.The sleep quality,pain status,health-related quality of life,and demographic-related data of these elderly patients were obtained.Pearson correlation analysis was conducted to assess the bivariate relationships among the variables.The mediating role of pain in the sleep quality-HRQoL relationship was tested using linear regression models,complemented by bootstrap sampling to verify the indirect effect.Results:Sleep quality was positively associated with health-related quality of life(r=0.218,p<0.001).Conversely,pain demonstrated significant negative correlations with both sleep quality(r=-0.496,p<0.001)and health-related quality of life(r=-0.067,p<0.001).The mediating effect results showed that pain played a partial mediating role between sleep quality and health-related quality of life in elderly patients with chronic diseases(effect value=0.049),and the mediating effect accounted for 23.33%.Conclusion:Pain is a mediating variable between sleep quality and health-related quality of life in elderly patients with chronic diseases.This suggests that clinical practice should incorporate pain assessment into standard clinical care of elderly patients with sleep disorders and chronic diseases.By alleviating pain,sleep quality can be improved,and subsequently,their health-related quality of life can be enhanced.
基金supported by the Fundamental Research Funds for the Central Universities(Nos.2021FZZX001-39 and 2020QNA7018)the Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province(No.20220204)the Medical Science and Technology Project of Zhejiang Province(No.2023RC037).
文摘Growing evidences showed that heavy metals exposure may be associated with metabolic diseases.Nevertheless,themechanism underlying arsenic(As)exposure and metabolic syndrome(MetS)risk has not been fully elucidated.So we aimed to prospectively investigate the role of serum uric acid(SUA)on the association between blood As exposure and incident MetS.A sample of 1045 older participants in a community in China was analyzed.We determined As at baseline and SUA concentration at follow-up in the Yiwu Elderly Cohort.MetS events were defined according to the criteria of the International Diabetes Federation(IDF).Generalized linear model with log-binominal regression model was applied to estimate the association of As with incident MetS.To investigate the role of SUA in the association between As andMetS,amediation analysiswas conducted.In the fully adjusted log-binominal model,per interquartile range increment of As,the risk of MetS increased 1.25-fold.Compared with the lowest quartile of As,the adjusted relative risk(RR)of MetS in the highest quartile was 1.42(95%confidence interval,CI:1.03,2.00).Additionally,blood As was positively associated with SUA,while SUA had significant association with MetS risk.Further mediation analysis demonstrated that the association of As and MetS risk was mediated by SUA,with the proportion of 15.7%.Our study found higher As was remarkably associated with the elevated risk of MetS in the Chinese older adults population.Mediation analysis indicated that SUA might be a mediator in the association between As exposure and MetS.
基金Supported by the Scientific Research Program of the Tianjin Education Commission(Natural Science),No.2023KJ033.
文摘BACKGROUND Several studies have suggested a close link between depression,overweight,and new-onset diabetes,particularly among middle-aged and older populations;however,the causal associations remain poorly understood.AIM To investigate the role of overweight in mediating the association between depression and new-onset diabetes in middle-aged and older populations.METHODS Data of 9426 individuals aged≥50 years from the 1998-2016 Health and Retirement Study database were analyzed.Weighted logistic regression was employed to obtain odds ratios(ORs)and 95%confidence intervals(95%CIs)for depression and new-onset diabetes in the middle-aged and older populations.Mediation analysis and the Sobel test were used to test the mediating effects of overweight between depression and the risk of new-onset diabetes.RESULTS New-onset diabetes was identified in 23.6%of the study population.Depression was significantly associated with new-onset diabetes(OR:1.18,95%CI:1.03-1.35,P value:0.014).Further adjustment for overweight attenuated the effect of depression on new-onset diabetes to 1.14(95%CI:1.00-1.30,P=0.053),with a significant mediating effect(P of Sobel test=0.003).The mediation analysis demonstrated that overweight accounted for 61%in depression for the risk of new-onset diabetes,with overweight having a partially mediating role in the depression-to-diabetes pathway.CONCLUSION New-onset diabetes was not necessarily a direct complication of depression;rather,depression led to behaviors that increase the risk of overweight and,consequently,new-onset diabetes.
基金supported by the Guangdong Basic and Applied Basic Research Foundation(2020A1515110608)Department of Education of Guangdong Province-Guangdong Province General University Youth Innovative Talent Project(2019KQNCX039).
文摘Background:Childhood environmental unpredictability(CEU)is crucial to personal development,profoundly influence physical and psychological growth particularly,and psychopathy is recognized as a dark personality trait.The aim of this study is to investigate the effects of insecure attachment and life history strategy(LHS)on the relationship between CEU and psychopathy by establishing a sequential mediation model based on evolutionary life history theory and cognitive-affective personality system.Methods:A group of 532 undergraduates completed the measurements for CEU,insecure attachment,LHS,and psychopathy,and Bootstrap mediation test through SPSS 25.0 and PROCESS macro tool was used to examine the relationship among these variables.Results:The results revealed positive relations between CEU and insecure attachment(β=0.87,p<0.001),CEU and LHS(β=0.11,p<0.001),and CEU and psychopathy(β=0.14,p<0.001).Insecure attachment was also positively associated with LHS(β=0.62,p<0.001)and psychopathy(β=0.04,p<0.001).In addition,LHS was significantly associated with psychopathy(β=0.08,p<0.001).The relationship between CEU and psychopathy is mediated independently and sequentially by insecure attachment and LHS.Conclusion:The current research shows the relationship between CEU and psychopathy,as well as the mechanism of insecure attachment and life history strategy as mediators.
文摘With the development of minimally invasive gynecological technology,hysteroscopic surgery has been widely used in the treatment of gynecological diseases due to its advantages of rapid recovery and minimal trauma.From the perspective of patients undergoing hysteroscopic surgery,this paper explores the influence of their psychological security on quality of life,analyzes the mediating effect of social support,and puts forward specific countermeasures and suggestions.The purpose is to improve the psychological security and quality of life of patients undergoing hysteroscopic surgery,and provide reference for the subsequent development of hysteroscopic surgery.
文摘Objective To study the importance of digital economy to promote the innovation development of enterprises under the background of the era of information technology reform.Methods The maximum entropy method was used to measure the comprehensive level of digital economy development at provincial level.Besides,the impact of digital economy on the innovation performance of pharmaceutical industry was investigated empirically by using A-share pharmaceutical companies listed in China from 2013 to 2020 as a research sample,and the mediating mechanism of R&D investment and financing constraints on the impact was examined.Results and Conclusion It is found that digital economy is significantly and positively related to the innovation performance of enterprises.The mechanism test shows that digital economy improves innovation performance through the expansion effect of R&D investment and alleviating financing constraints.In the context that digital economy has become a new driving force for enterprise innovation,the combination of digital economy and real economy should be actively promoted,R&D investment in pharmaceutical enterprises should be increased,and financing channels should be broadened.
基金supported by a grant from the Supporting Program of the"Eleventh Five-year Plan"for Science&Technology Research of China,Ministry of Science and Technology of China,No.2006BAI12B02a grant from the Scientific Research Fund for Talent Introduction in the Gansu University of Chinese Medicine of China,No.2012-11
文摘Data mining has the potential to provide information for improving clinical acupuncture strategies by uncovering hidden rules between acupuncture manipulation and therapeutic effects in a data set. In this study, we performed acupuncture on 30 patients with hemiplegia due to acute ischemic stroke. All participants were pre-screened to ensure that they exhibited immediate responses to acupuncture. We used a twirling reinforcing acupuncture manipulation at the specific lines between the bilateral Baihui（GV20） and Taiyang（EX-HN5）. We collected neurologic deficit score, simplified Fugl-Meyer assessment score, muscle strength of the proximal and distal hemiplegic limbs, ratio of the maximal H-reflex to the maximal M-wave（Hmax/Mmax）, muscle tension at baseline and immediately after treatment, and the syndromes of traditional Chinese medicine at baseline. We then conducted data mining using an association algorithm and an artificial neural network backpropagation algorithm. We found that the twirling reinforcing manipulation had no obvious therapeutic difference in traditional Chinese medicine syndromes of ＂Deficiency and Excess＂. The change in the muscle strength of the upper distal and lower proximal limbs was one of the main factors affecting the immediate change in Fugl-Meyer scores. Additionally, we found a positive correlation between the muscle tension change of the upper limb and Hmax/Mmax immediate change, and both positive and negative correlations existed between the muscle tension change of the lower limb and immediate Hmax/Mmax change. Additionally, when the difference value of muscle tension for the upper and lower limbs was 〉 0 or 〈 0, the difference value of Hmax/Mmax was correspondingly positive or negative, indicating the scalp acupuncture has a bidirectional effect on muscle tension in hemiplegic limbs. Therefore, acupuncture with twirling reinforcing manipulation has distinct effects on acute ischemic stroke patients with different symptoms or stages of disease. Improved muscle tension in the upper and lower limbs, reflected by the variation in the Hmax/Mmax ratio, is crucial for recovery of motor function from hemiplegia.
基金This work was supported by Guangdong Basic and Applied Basic Research Foundation,China(No.2019A1515110980)research project from the National Natural Science Foundation of China(No.21361162004)China Scholarship Council,and CSIRO.We acknowledge Dr Yesim Gozukara,Dr Malisja de Vries,and Dr Yunxia Yang from CSIRO(Clayton)for their help with material characterization training.
文摘As promising anodes for sodium-ion batteries,metal sulfides ubiquitously suffer from low-rate and high-plateau issues,greatly hindering their application in full-cells.Herein,exemplifying carbon nanotubes(CNTs)-stringed metal sulfides superstructure(CSC)assembled by nano-dispersed SnS_(2) and CoS_(2) phases,cocktail mediation effect similar to that of high-entropy materials is initially studied in ether-based electrolyte to solve the challenges.The high nano-dispersity of metal sulfides in CSC anode underlies the cocktail-like mediation effect,enabling the circumvention of intrinsic drawbacks of different metal sulfides.By utilizing ether-based electrolyte,the reversibility of metal sulfides is greatly improved,sustaining a long-life effectivity of cocktail-like mediation.As such,CSC effectively overcomes low-rate flaw of SnS_(2) and highplateau demerit of CoS_(2),simultaneously realizes a high rate and a low plateau.In half-cells,CSC delivers an ultrahigh-rate capability of 327.6 mAh g^(−1) anode at 20 A g^(−1),far outperforming those of monometallic sulfides(SnS_(2),CoS_(2))and their mixtures.Compared with CoS_(2) phase and SnS_(2)/CoS_(2) mixture,CSC shows remarkably lowered average charge voltage up to ca.0.62 V.As-assembled CSC//Na1.5VPO4.8F0.7 full-cell shows a good rate capability(0.05~1.0 A g^(−1),120.3 mAh g^(−1) electrode at 0.05 A g^(−1))and a high average discharge voltage up to 2.57 V,comparable to full-cells with alloy-type anodes.Kinetics analysis verifies that the cocktail-like mediation effect largely boosts the charge transfer and ionic diffusion in CSC,compared with single phase and mixed phases.Further mechanism study reveals that alternative and complementary electrochemical processes between nano-dispersed SnS_(2) and CoS_(2) phases are responsible for the lowered charge voltage of CSC.This electrolyte/structure-dependent cocktail-like mediation effect effectively enhances the practicability of metal sulfide anodes,which will boost the development of high-rate/-voltage sodium-ion full batteries.
基金supported by the National Natural Science Foundation of China(72171005),to which we are deeply grateful。
文摘The effect of investor sentiment on stock volatility is a highly attractive research question in both the academic field and the real financial industry.With the proposal of China’s"dual carbon"target,green stocks have gradually become an essential branch of Chinese stock markets.Focusing on 106 stocks from the new energy,environmental protection,and carbon–neutral sectors,we construct two investor sentiment proxies using Internet text and stock trading data,respectively.The Internet sentiment is based on posts from Eastmoney Guba,and the trading sentiment comes from a variety of trading indicators.In addition,we divide the realized volatility into continuous and jump parts,and then investigate the effects of investor sentiment on different types of volatilities.Our empirical findings show that both sentiment indices impose significant positive impacts on realized,continuous,and jump volatilities,where trading sentiment is the main factor.We further explore the mediating effect of information asymmetry,measured by the volume-synchronized probability of informed trading(VPIN),on the path of investor sentiment affecting stock volatility.It is evidenced that investor sentiments are positively correlated with the VPIN,and they can affect volatilities through the VPIN.We then divide the total sample around the coronavirus disease 2019(COVID-19)pandemic.The empirical results reveal that the market volatility after the COVID-19 pandemic is more susceptible to investor sentiments,especially to Internet sentiment.Our study is of great significance for maintaining the stability of green stock markets and reducing market volatility.
