Purpose:To explore the childbirth expectations of Chinese expectant parents during their transition to parenthood.Methods:A cross-sectional descriptive survey was used through the Chinese version of the Childbirth Exp...Purpose:To explore the childbirth expectations of Chinese expectant parents during their transition to parenthood.Methods:A cross-sectional descriptive survey was used through the Chinese version of the Childbirth Expectations Questionnaire.A total of 240 expectant parents were recruited when they were admitted to the obstetric units waiting for delivery at a large Maternal and Child Health care Center in Beijing,and 210 couples completed the questionnaires,yielding a response rate of 87.5%.Results:The expectant parents had a high level of childbirth expectations towards caregiving environment,spousal support,control and participation and medical support.Conversely,their expectations toward labor pain and their own ability to cope with the pain were relatively low.Expectant fathers’childbirth expectations and preference of partner’s accompany were two significant predictors of expectant mothers’childbirth expectations,explaining 18.9%and 3.3%of the total variance,respectively.While expectant mothers’childbirth expectations was the only significant predictor of expectant fathers’childbirth expectations.Conclusion:This study adds to understanding of the childbirth expectations of Chinese expectant parents.It is suggested that maternity healthcare providers pay close attention to the childbirth expectations of expectant parents,and improve the nursing care service to promote positive childbirth experiences and satisfaction of expectant parents.展开更多
Background: The prevention of mother to child transmission (PMTCT) of human immunodeficiency virus (HIV) is paramount in safeguarding the lives of unborn children and young babies. The study sought to examine the know...Background: The prevention of mother to child transmission (PMTCT) of human immunodeficiency virus (HIV) is paramount in safeguarding the lives of unborn children and young babies. The study sought to examine the knowledge and attitudes of expectant mothers towards HIV screening and testing in the Jachie-Pramso Community of the Ashanti Region. Methods: The study adopted a descriptive survey approach as its research design. The population of the study comprised 158 expectant mothers who were registered and attended regular antenatal care sessions at the community hospital. The census approach to sampling was adopted for the study. A structured questionnaire was used as the tool for data collection. Chi-square and descriptive statistics were used to analyse the data. Results: The findings from the study indicated that awareness level of HIV and its related issues were high among expectant mothers. It was also found that attitude of healthcare workers, community members and sexual partners are the main factors that prevent expectant mothers from patronising voluntary counselling and testing (VCT) services. It was generally, recommended that intensive educational programmes be instituted to sensitize both healthcare workers and the general public on discriminative behaviours. Conclusion: Most of the expectant mothers have knowledge of HIV and attitudes of the expectant mothers towards VCT of HIV were positive. The healthcare facility and its professionals may consider training the expectant mothers so they can act as snow-ballers in the dissemination of relevant health education and coerce other expectant mothers in the community to participate in the VCT and HIV programmes.展开更多
Background: Anxiety and depressive disorders can disturb the development of pregnancies. The goal was to study the prevalence and factors associated with anxiety and depression in expectant mothers followed in public ...Background: Anxiety and depressive disorders can disturb the development of pregnancies. The goal was to study the prevalence and factors associated with anxiety and depression in expectant mothers followed in public maternity wards of Parakou in 2018. Population and methods: It was a cross- sectional study which consisted in an exhaustive census and a consecutive recruitment of 835 expectant mothers from June 14th to September 14th, 2018. Data collection was realized through interview between the investigator and the respondent basing on a questionnaire in which were integrated Edinburgh Postnatal Depression Scale-3 (EPDS-3), EPDS and modular Integrated Household Living Conditions Survey (IHLCS-2015) to assess respectively anxiety, depression and expectant mothers’ socio-economic level. Results: The prevalences of anxiety and depression were respectively 44.91% and 35.33%. Many factors were associated with anxiety and depression. Low socio-economic level increased 6.7 times the risk of developing anxiety (OR = 6.70;IC95% [2.83 - 13.00];p = 0.000) and 8.64 times the risk for the onset of depression (OR = 8.64;IC95% [3.09 - 17.18];p = 0.000). Celibacy increased 2.67 times the risk of developing anxiety (OR = 2.67;IC95% [1.19 - 5.98];p = 0.000) and 2.18 times the one of depression (OR = 2.18;IC95% [1.07 - 4.40];p = 0.000). Low economic level and celibacy were the main psychosocial determinants of anxiety and depression in expectant mothers. Conclusion: The implementation of multidisciplinary action program centred on improving purchasing power would reduce the risk of anxiety and depression in expectant mothers.展开更多
Premature Rupture of Membranes (PROM) with the resulting prematurity remains a major public health issue in the Democratic Republic of Congo (DRC). This study aimed to assess expectant management of PPROM before 34 we...Premature Rupture of Membranes (PROM) with the resulting prematurity remains a major public health issue in the Democratic Republic of Congo (DRC). This study aimed to assess expectant management of PPROM before 34 weeks at the university hospital of Kinshasa. We conducted a retrospective analysis of expectantly managed PROM before 34 weeks between January 2008 and December 2018. Maternal and fetal outcomes were collected, and all data were analyzed using the SPSS 23.0 software. Of the 113 patients included in the study, 2.6% were diagnosed with PROM before 34 weeks. We observed prolongation of the pregnancy duration;the median latency period was eight days, and the average gestational age at delivery of 32.85 ± 2.5 weeks. Chorioamnionitis (23%), severe oligoamnios (7%), and acute fetal distress (4%) were complications observed during the latency period. In the postpartum period, endometritis (6.2%), neonatal jaundice (39.8%), anemia (25.7%), ulcerative necrotizing enterocolitis (6.2%), cerebromeningeal hemorrhage (5.3%), and acute respiratory distress syndrome (4.4%) were complications observed. The risk of infection during the latency period was significantly associated with irregular (P = 0.045) or lack (P = 0.006) antenatal care (ANC) attendances and C-Reactive Protein (CRP) results 6 (P = 0.013). The risk of neonatal death was significantly associated to infection during the latency period (P = 0.011), irregular (P = 0.009) or lack of ANC (P = 0.000) attendances, Birth weight g (P = 0.039) as well as Gestational age at birth between 28 to 30 Weeks (S) (P = 0.021). These findings report first-time pregnancy outcomes related to the management of PPROM before 34 weeks in our setting. We found that the conservative attitude adopted allowed the prolongation of pregnancies, reducing the risks associated with prematurity. Nevertheless, attendance in good quality ANC could reduce the frequency of PROM and related adverse outcomes.展开更多
Objective: to study the clinical effect of expectant treatment in preterm premature rupture of membranes. Methods: select ed100 cases of preterm premature rupture of membranes (PPROM) in our hospital from January 2018...Objective: to study the clinical effect of expectant treatment in preterm premature rupture of membranes. Methods: select ed100 cases of preterm premature rupture of membranes (PPROM) in our hospital from January 2018 to December 2019 and divided them into group A and group B according to their gestational weeks. Group A was mainly pregnant women with gestational weeks at [(28-34) + 6] and group B was pregnant women with gestational weeks at [(35-36) + 6]. Maternal and infant outcomes and delivery patterns were compared between the two groups. Results: the fetal distress and neonatal mortality rate in group A were significantly higher than those in group B (P < 0.05), but in the mode of delivery, the comparison between the two groups was not statistically significant (P > 0.05). Conclusion: expectant treatment should be actively adopted for pregnant women whose gestational weeks are [(28-34) + 6]. According to the actual situation of pregnant women, the gestational weeks should be prolonged, and appropriate opportunities should be selected to end the pregnancy, so as to effectively improve the maternal and infant outcomes and promote their healthy development.展开更多
To the Editor,Dengue fever is an arboviral illness primarily transmitted by Aedes aegypti mosquitoes and is caused by the dengue virus(DENV),a member of the Flaviviridae family.This infection has become widespread in ...To the Editor,Dengue fever is an arboviral illness primarily transmitted by Aedes aegypti mosquitoes and is caused by the dengue virus(DENV),a member of the Flaviviridae family.This infection has become widespread in approximately 100 countries,placing nearly three billion individuals at risk of transmission[1,2].The disease manifests in various forms.展开更多
Background Heterotopic cesarean scar pregnancy （HCSP） is a very rare but life-threatening entity and there is no optimal management strategy. Here we report a successfully managed case of HCSP with expectant treatme...Background Heterotopic cesarean scar pregnancy （HCSP） is a very rare but life-threatening entity and there is no optimal management strategy. Here we report a successfully managed case of HCSP with expectant treatment in a tertiary referral hospital. Methods A woman with HCSP after in vitro fertilization-embryo transfer opted for expectant treatment after five days of mild bleeding and ultrasound demonstrated cardiac activity disappearance of the scar pregnancy at 8＋4 weeks of gestation. Results The patient had mild to moderate bleeding during close monitoring. Three days later, speculum examination revealed the gestational mass was partly protruding at the os of the cervix and it was removed with forceps without massive hemorrhage. A healthy male baby was delivered by cesarean section at gestational age of 36＋4 weeks. Conclusions The expectant method might be an alternative option for a HCSP with loss of cardiac activity of the scar pregnancy, when applied under supportive management and with available emergency surgery facilities.展开更多
The complete convergence for weighted sums of sequences of independent,identically distributed random variables under sublinear expectation space is studied.By moment inequality and truncation methods,we establish the...The complete convergence for weighted sums of sequences of independent,identically distributed random variables under sublinear expectation space is studied.By moment inequality and truncation methods,we establish the equivalent conditions of complete convergence for weighted sums of sequences of independent,identically distributed random variables under sublinear expectation space.The results complement the corresponding results in probability space to those for sequences of independent,identically distributed random variables under sublinear expectation space.展开更多
Ball lightning is widely concerning because it is hard to detect,predict,and reproduce.The dependences of electromagnetic(EM)solitons,which are considered expectant ball lightning,forming at the wavelength of the inci...Ball lightning is widely concerning because it is hard to detect,predict,and reproduce.The dependences of electromagnetic(EM)solitons,which are considered expectant ball lightning,forming at the wavelength of the incident light are investigated with two-dimensional particle-in-cell simulations.It shows that both the long wavelength microwave and the short wavelength laser are not suitable for producing the observed ball-lightning-like EM solitons.A strong field terahertz wave is proposed to inject and generate EM solitons.This paper can provide some references for researchers studying ball lightning.展开更多
Employees’innovative performance determines an organization’s innovation,which critically impacts its structural optimization and sustainability.Applying expectancy theory,we examined how and when the Pygmalion effe...Employees’innovative performance determines an organization’s innovation,which critically impacts its structural optimization and sustainability.Applying expectancy theory,we examined how and when the Pygmalion effect occurs in the relationship between leaders’expectations of innovation and employee innovative behavior.Our sample comprised 201 frontline employees(female=31.84%;mean age=41.48 years,SD=7.97 years)in a Chinese coal enterprise,who completed surveys on innovation expectations of leaders,expected positive performance outcomes,innovative self-efficacy and innovative behavior.The results revealed that employees’expected positive performance outcomes mediated the positive relationship between leaders’innovation expectations and their innovative behavior.Employees’innovative self-efficacy positively moderated the relationship between their expected positive performance outcomes and innovative behavior,with this relationship being stronger for employees with high innovative self-efficacy.Moreover,we validated the moderated mediation model.Findings suggest that leaders can stimulate employee innovative behavior through expressing expectations and they also need to consider the boundary conditions.展开更多
As an old Chinese saying goes,knowledge changes fate.An ordinary college student carries expectations of several generations of his or her family.Consequently,a vast majority of high school graduates applying for coll...As an old Chinese saying goes,knowledge changes fate.An ordinary college student carries expectations of several generations of his or her family.Consequently,a vast majority of high school graduates applying for college prefer to choose colleges and majors with good employment prospects.Two years ago,facing hundreds of majors,I was caught in a dilemma.Law seemed appealing,as it could offer a high income and a worry-free life.展开更多
Objective:The aim of this study was to investigate the health expectations(HEs)in patients with diabetes and the factors affecting it using an integrative systematic review.Methods:A comprehensive literature search wa...Objective:The aim of this study was to investigate the health expectations(HEs)in patients with diabetes and the factors affecting it using an integrative systematic review.Methods:A comprehensive literature search was conducted in databases including PubMed,Scopus,Science Direct,Google Scholar,ProQuest,CINAHL,SID,Iran Doc,and Magiran without time limitation using related keywords.The systematic literature search was performed using a guide provided by York University.Results:From a total of 1883 articles,17 of them finally met the eligibility criteria.According to the findings of this study,HE of diabetic patients was included in four categories:“dynamism,”“consequentialism,”“comprehensive care,”and“access to facilities.”Also,these expectations can be influenced by various factors,including“developments in societies,”“changing the conditions of health care systems,”and“individual factors.”Conclusions:Health professionals should pay attention to the expectations of diabetic patients who are involved in complex disease conditions and consider meeting them as a key factor in providing patient-centered care,improving health outcomes,and patient satisfaction.展开更多
This study investigates the return dynamics,volatility structure,and risk characteristics of five representative S&P 500 stocks:Johnson&Johnson,Microsoft,NVIDIA,Coca-Cola,and Home Depot,using ARMA-GARCH models...This study investigates the return dynamics,volatility structure,and risk characteristics of five representative S&P 500 stocks:Johnson&Johnson,Microsoft,NVIDIA,Coca-Cola,and Home Depot,using ARMA-GARCH models.Descriptive statistics and diagnostic tests confirm non-normality,negative skewness,fat tails,and volatility clustering,providing strong justification for conditional mean-variance modelling.Optimal model specifications are selected via the Bayesian Information Criterion,with EGARCH frameworks generally outperforming alternative GARCH variants in capturing asymmetric volatility responses.Rolling-window forecasts for 2024Q1 show that the models generate stable and reliable volatility predictions for low-volatility stocks(JNJ,KO),while performance is weaker for highly volatile stocks(NVDA),highlighting structural limitations under extreme market shifts.To evaluate risk management implications,one percent Value-at-Risk and expected shortfall were computed and backtested.Results indicated conservative tail-risk forecasts,with violation rates well within acceptable thresholds.Portfolio applications are further explored by constructing the Global Minimum Variance Portfolio(GMVP)and the Maximum Sharpe Ratio(Max SR)portfolio using rolling covariance estimates.Out-of-sample backtesting demonstrated that the GMVP delivered low volatility but modest returns,whereas the Max SR portfolio achieved significantly higher performance,consistent with the risk-return trade-off.Overall,the findings confirm that ARMA-GARCH models are effective tools for modelling conditional volatility and informing dynamic asset allocation.However,their limited adaptability to jump risk and nonlinear structural breaks underscores the need for more advanced modelling approaches in high-volatility environments.展开更多
Background There is a lack of research examining the interplay between objectively measured physical activity volume and intensity with life expectancy.The purpose of the study was to investigate the interplay between...Background There is a lack of research examining the interplay between objectively measured physical activity volume and intensity with life expectancy.The purpose of the study was to investigate the interplay between objectively measured PA volume and intensity profiles with modeled life expectancy in women and men within the UK Biobank cohort study and interpret findings in relation to brisk walking.Methods Individuals from UK Biobank with wrist-worn accelerometer data were included.The average acceleration and intensity gradient were extracted to describe the physical activity volume and intensity profile.Mortality data were obtained from national registries.Adjusted life expectancies were estimated using parametric flexible survival models.Results 40,953(57.1%)women(median age=61.9 years)and 30,820(42.9%)men(63.1 years)were included.Over a median follow-up of 6.9 years,there were 1719(2.4%)deaths(733 in women;986 in men).At 60 years,life expectancy was progressively longer for higher physical activity volume and intensity profiles,reaching 95.6 years in women and 94.5 years in men at the 90th centile for both volume and intensity,corresponding to 3.4 additional years(95%confidence interval(95%CI):2.4-4.4)in women and 4.6 additional years(95%CI:3.6-5.6)in men compared to those at the 10th centiles.An additional 10-min or 30-min daily brisk walk was associated with 0.9(95%CI:0.5-1.3)and 1.4 years(95%CI:0.9-1.9)longer life expectancy,respectively,in inactive women;and 1.4 years(95%CI:1.0-1.8)and 2.5(95%CI:1.9-3.1)in inactive men.Conclusion Higher physical activity volumes were associated with longer life expectancy,with a higher physical activity intensity profile further adding to a longer life.Adding as little as a 10-min brisk walk to daily activity patterns may result in a meaningful benefit to life expectancy.展开更多
Variable-fidelity(VF)surrogate models have received increasing attention in engineering design optimization as they can approximate expensive high-fidelity(HF)simulations with reduced computational power.A key challen...Variable-fidelity(VF)surrogate models have received increasing attention in engineering design optimization as they can approximate expensive high-fidelity(HF)simulations with reduced computational power.A key challenge to building a VF model is devising an adaptive model updating strategy that jointly selects additional low-fidelity(LF)and/or HF samples.The additional samples must enhance the model accuracy while maximizing the computational efficiency.We propose ISMA-VFEEI,a global optimization framework that integrates an Improved Slime-Mould Algorithm(ISMA)and a Variable-Fidelity Expected Extension Improvement(VFEEI)learning function to construct a VF surrogate model efficiently.First,A cost-aware VFEEI function guides the adaptive LF/HF sampling by explicitly incorporating evaluation cost and existing sample proximity.Second,ISMA is employed to solve the resulting non-convex optimization problem and identify global optimal infill points for model enhancement.The efficacy of ISMA-VFEEI is demonstrated through six numerical benchmarks and one real-world engineering case study.The engineering case study of a high-speed railway Electric Multiple Unit(EMU),the optimization objective of a sanding device attained a minimum value of 1.546 using only 20 HF evaluations,outperforming all the compared methods.展开更多
In this paper,an index modulation(IM)aided uplink orthogonal time frequency space modulation(OTFS)structure for sparse code multiple access(SCMA)is proposed.To be more specific,the information bits are firstly partiti...In this paper,an index modulation(IM)aided uplink orthogonal time frequency space modulation(OTFS)structure for sparse code multiple access(SCMA)is proposed.To be more specific,the information bits are firstly partitioned for transmit antenna(TA)selection and sparse codeword mapping,respectively.Subsequently,the codewords deployed on the 2-dimensional(2D)delay-Doppler(DD)plane are transmitted by the selected TA,and the superimposed signals are jointly detected at the receiver.Furthermore,a low-complexity zero-embedded expectation propagation(ZE-EP)detector is conceived,where the codebooks are extended with zero vectors to reflect the silent indices.The simulation results demonstrate that the proposed IM-OTFS-SCMA system is capable of providing significant performance gain over the OTFS-SCMA counterpart.展开更多
Objective:This study aimed to investigate the learning expectations of undergraduate nursing students regarding the flipped Health Assessment course.Methods:This descriptive,qualitative study was conducted at a medica...Objective:This study aimed to investigate the learning expectations of undergraduate nursing students regarding the flipped Health Assessment course.Methods:This descriptive,qualitative study was conducted at a medical university in Fuzhou,Fujian Province,China.An interview outline was designed based on the core dimensions of Expectation Confirmation Theory(expectation sources,expectation content,and expectation importance).Thirty second-year undergraduate nursing students who had completed first-year basic medical courses and were about to take the flipped Health Assessment course were interviewed between June and July 2022.Interview data were analyzed using qualitative content analysis.Results:Five major themes and thirteen subthemes were identified.Theme 1 was expectation sourcesperceived learning difficulties from past experiences,which included four subthemes:insufficient autonomous learning ability,confusion regarding learning methods,insufficient engagement in learning,and low professional identity.Theme 2 included knowledge and information expectations,which comprised three subthemes:knowledge to improve professional competence,knowledge to enhance academic competitiveness,and knowledge to boost self-efficacy.Theme 3 comprised logical expectations and included two subthemes:flexible teaching methods and efficient instructional tools.Theme 4,pleasure expectations,included two subthemes:vivid teaching styles and diversified teaching evaluations.Theme 5 comprised professional value expectations and included two subthemes:teachers'responsible professional attitudes and gentle emotional support.Conclusion:Students'learning expectations originate from perceived learning difficulties,such as insufficient learning autonomy and engagement,confusion about learning methods,and a lack of professional identity.They showed various learning expectations for the flipped Health Assessment course,including knowledge and information,logic,pleasure,and professional value expectations.展开更多
With the industrialization of agriculture and the advancement of medical care,human life expectancy has increased considerably and continues to rise steadily.This results in novel and unprecedented challenges,namely o...With the industrialization of agriculture and the advancement of medical care,human life expectancy has increased considerably and continues to rise steadily.This results in novel and unprecedented challenges,namely obesity and neurodegeneration.展开更多
In the new released article of the Journal of Sport and Health Science,Zaccardi et al.1 provide compelling evidence that engaging in higher volumes and intensities of physical activity(PA)increases life expectancy in ...In the new released article of the Journal of Sport and Health Science,Zaccardi et al.1 provide compelling evidence that engaging in higher volumes and intensities of physical activity(PA)increases life expectancy in older men and women enrolled in the UK Biobank study.The study included 30,820 men and 40,953 women with median ages of 63.1 years and 61.9 years,respectively.Study participants wore accelerometers to track their time and intensity of PA for 7 days at baseline.展开更多
How do individuals adjust their savings and consumption behaviors in response to the combined effects of increased life expectancy and declining pension replacement rates?This study constructs a life-cycle model,using...How do individuals adjust their savings and consumption behaviors in response to the combined effects of increased life expectancy and declining pension replacement rates?This study constructs a life-cycle model,using changes in conditional survival probabilities as a proxy for shifts in individual life expectancy,to examine consumption behavior under the dual backdrop of prolonged longevity and a gradual decline in pension replacement rates.The results suggest that changes in life expectancy and pension replacement rates together explain 8.9%to 10.2%of the observed decline in consumption in recent years,with both variables playing equally significant explanatory roles.Furthermore,we find that,to fully offset the negative impact of increased life expectancy on consumption,the pension replacement rate must reach at least 82%.These findings offer theoretical and policy implications for improving the quality of life in later years among enterprise employees in the context of population aging.展开更多
文摘Purpose:To explore the childbirth expectations of Chinese expectant parents during their transition to parenthood.Methods:A cross-sectional descriptive survey was used through the Chinese version of the Childbirth Expectations Questionnaire.A total of 240 expectant parents were recruited when they were admitted to the obstetric units waiting for delivery at a large Maternal and Child Health care Center in Beijing,and 210 couples completed the questionnaires,yielding a response rate of 87.5%.Results:The expectant parents had a high level of childbirth expectations towards caregiving environment,spousal support,control and participation and medical support.Conversely,their expectations toward labor pain and their own ability to cope with the pain were relatively low.Expectant fathers’childbirth expectations and preference of partner’s accompany were two significant predictors of expectant mothers’childbirth expectations,explaining 18.9%and 3.3%of the total variance,respectively.While expectant mothers’childbirth expectations was the only significant predictor of expectant fathers’childbirth expectations.Conclusion:This study adds to understanding of the childbirth expectations of Chinese expectant parents.It is suggested that maternity healthcare providers pay close attention to the childbirth expectations of expectant parents,and improve the nursing care service to promote positive childbirth experiences and satisfaction of expectant parents.
文摘Background: The prevention of mother to child transmission (PMTCT) of human immunodeficiency virus (HIV) is paramount in safeguarding the lives of unborn children and young babies. The study sought to examine the knowledge and attitudes of expectant mothers towards HIV screening and testing in the Jachie-Pramso Community of the Ashanti Region. Methods: The study adopted a descriptive survey approach as its research design. The population of the study comprised 158 expectant mothers who were registered and attended regular antenatal care sessions at the community hospital. The census approach to sampling was adopted for the study. A structured questionnaire was used as the tool for data collection. Chi-square and descriptive statistics were used to analyse the data. Results: The findings from the study indicated that awareness level of HIV and its related issues were high among expectant mothers. It was also found that attitude of healthcare workers, community members and sexual partners are the main factors that prevent expectant mothers from patronising voluntary counselling and testing (VCT) services. It was generally, recommended that intensive educational programmes be instituted to sensitize both healthcare workers and the general public on discriminative behaviours. Conclusion: Most of the expectant mothers have knowledge of HIV and attitudes of the expectant mothers towards VCT of HIV were positive. The healthcare facility and its professionals may consider training the expectant mothers so they can act as snow-ballers in the dissemination of relevant health education and coerce other expectant mothers in the community to participate in the VCT and HIV programmes.
文摘Background: Anxiety and depressive disorders can disturb the development of pregnancies. The goal was to study the prevalence and factors associated with anxiety and depression in expectant mothers followed in public maternity wards of Parakou in 2018. Population and methods: It was a cross- sectional study which consisted in an exhaustive census and a consecutive recruitment of 835 expectant mothers from June 14th to September 14th, 2018. Data collection was realized through interview between the investigator and the respondent basing on a questionnaire in which were integrated Edinburgh Postnatal Depression Scale-3 (EPDS-3), EPDS and modular Integrated Household Living Conditions Survey (IHLCS-2015) to assess respectively anxiety, depression and expectant mothers’ socio-economic level. Results: The prevalences of anxiety and depression were respectively 44.91% and 35.33%. Many factors were associated with anxiety and depression. Low socio-economic level increased 6.7 times the risk of developing anxiety (OR = 6.70;IC95% [2.83 - 13.00];p = 0.000) and 8.64 times the risk for the onset of depression (OR = 8.64;IC95% [3.09 - 17.18];p = 0.000). Celibacy increased 2.67 times the risk of developing anxiety (OR = 2.67;IC95% [1.19 - 5.98];p = 0.000) and 2.18 times the one of depression (OR = 2.18;IC95% [1.07 - 4.40];p = 0.000). Low economic level and celibacy were the main psychosocial determinants of anxiety and depression in expectant mothers. Conclusion: The implementation of multidisciplinary action program centred on improving purchasing power would reduce the risk of anxiety and depression in expectant mothers.
文摘Premature Rupture of Membranes (PROM) with the resulting prematurity remains a major public health issue in the Democratic Republic of Congo (DRC). This study aimed to assess expectant management of PPROM before 34 weeks at the university hospital of Kinshasa. We conducted a retrospective analysis of expectantly managed PROM before 34 weeks between January 2008 and December 2018. Maternal and fetal outcomes were collected, and all data were analyzed using the SPSS 23.0 software. Of the 113 patients included in the study, 2.6% were diagnosed with PROM before 34 weeks. We observed prolongation of the pregnancy duration;the median latency period was eight days, and the average gestational age at delivery of 32.85 ± 2.5 weeks. Chorioamnionitis (23%), severe oligoamnios (7%), and acute fetal distress (4%) were complications observed during the latency period. In the postpartum period, endometritis (6.2%), neonatal jaundice (39.8%), anemia (25.7%), ulcerative necrotizing enterocolitis (6.2%), cerebromeningeal hemorrhage (5.3%), and acute respiratory distress syndrome (4.4%) were complications observed. The risk of infection during the latency period was significantly associated with irregular (P = 0.045) or lack (P = 0.006) antenatal care (ANC) attendances and C-Reactive Protein (CRP) results 6 (P = 0.013). The risk of neonatal death was significantly associated to infection during the latency period (P = 0.011), irregular (P = 0.009) or lack of ANC (P = 0.000) attendances, Birth weight g (P = 0.039) as well as Gestational age at birth between 28 to 30 Weeks (S) (P = 0.021). These findings report first-time pregnancy outcomes related to the management of PPROM before 34 weeks in our setting. We found that the conservative attitude adopted allowed the prolongation of pregnancies, reducing the risks associated with prematurity. Nevertheless, attendance in good quality ANC could reduce the frequency of PROM and related adverse outcomes.
文摘Objective: to study the clinical effect of expectant treatment in preterm premature rupture of membranes. Methods: select ed100 cases of preterm premature rupture of membranes (PPROM) in our hospital from January 2018 to December 2019 and divided them into group A and group B according to their gestational weeks. Group A was mainly pregnant women with gestational weeks at [(28-34) + 6] and group B was pregnant women with gestational weeks at [(35-36) + 6]. Maternal and infant outcomes and delivery patterns were compared between the two groups. Results: the fetal distress and neonatal mortality rate in group A were significantly higher than those in group B (P < 0.05), but in the mode of delivery, the comparison between the two groups was not statistically significant (P > 0.05). Conclusion: expectant treatment should be actively adopted for pregnant women whose gestational weeks are [(28-34) + 6]. According to the actual situation of pregnant women, the gestational weeks should be prolonged, and appropriate opportunities should be selected to end the pregnancy, so as to effectively improve the maternal and infant outcomes and promote their healthy development.
文摘To the Editor,Dengue fever is an arboviral illness primarily transmitted by Aedes aegypti mosquitoes and is caused by the dengue virus(DENV),a member of the Flaviviridae family.This infection has become widespread in approximately 100 countries,placing nearly three billion individuals at risk of transmission[1,2].The disease manifests in various forms.
文摘Background Heterotopic cesarean scar pregnancy （HCSP） is a very rare but life-threatening entity and there is no optimal management strategy. Here we report a successfully managed case of HCSP with expectant treatment in a tertiary referral hospital. Methods A woman with HCSP after in vitro fertilization-embryo transfer opted for expectant treatment after five days of mild bleeding and ultrasound demonstrated cardiac activity disappearance of the scar pregnancy at 8＋4 weeks of gestation. Results The patient had mild to moderate bleeding during close monitoring. Three days later, speculum examination revealed the gestational mass was partly protruding at the os of the cervix and it was removed with forceps without massive hemorrhage. A healthy male baby was delivered by cesarean section at gestational age of 36＋4 weeks. Conclusions The expectant method might be an alternative option for a HCSP with loss of cardiac activity of the scar pregnancy, when applied under supportive management and with available emergency surgery facilities.
基金supported by Doctoral Scientific Research Starting Foundation of Jingdezhen Ceramic University(Grant No.102/01003002031)Re-accompanying Funding Project of Academic Achievements of Jingdezhen Ceramic University(Grant Nos.215/20506277,215/20506341)。
文摘The complete convergence for weighted sums of sequences of independent,identically distributed random variables under sublinear expectation space is studied.By moment inequality and truncation methods,we establish the equivalent conditions of complete convergence for weighted sums of sequences of independent,identically distributed random variables under sublinear expectation space.The results complement the corresponding results in probability space to those for sequences of independent,identically distributed random variables under sublinear expectation space.
基金supported by the National Natural Science Foundation of China(Nos.11874372 and 11922412)the Shanghai Rising-Star Program and Shanghai Foundation(No.2019-jmrh1-kj1)+1 种基金the Strategic Priority Research Program(B)(No.XDB16)the Youth Innovation Promotion Association CAS,and the Key Research Program of Frontier Sciences,CAS(No.ZDBS-LY-SLH018)。
文摘Ball lightning is widely concerning because it is hard to detect,predict,and reproduce.The dependences of electromagnetic(EM)solitons,which are considered expectant ball lightning,forming at the wavelength of the incident light are investigated with two-dimensional particle-in-cell simulations.It shows that both the long wavelength microwave and the short wavelength laser are not suitable for producing the observed ball-lightning-like EM solitons.A strong field terahertz wave is proposed to inject and generate EM solitons.This paper can provide some references for researchers studying ball lightning.
基金funded by“National Natural Science Foundation of China”grant number[71872119]“Shanxi Provincial Government Major Decision-making Consulting Project”grant number[ZB20240114]The APC was funded by“Shanxi Provincial Government Major Decision-making Consulting Project”grant number[ZB20240114].
文摘Employees’innovative performance determines an organization’s innovation,which critically impacts its structural optimization and sustainability.Applying expectancy theory,we examined how and when the Pygmalion effect occurs in the relationship between leaders’expectations of innovation and employee innovative behavior.Our sample comprised 201 frontline employees(female=31.84%;mean age=41.48 years,SD=7.97 years)in a Chinese coal enterprise,who completed surveys on innovation expectations of leaders,expected positive performance outcomes,innovative self-efficacy and innovative behavior.The results revealed that employees’expected positive performance outcomes mediated the positive relationship between leaders’innovation expectations and their innovative behavior.Employees’innovative self-efficacy positively moderated the relationship between their expected positive performance outcomes and innovative behavior,with this relationship being stronger for employees with high innovative self-efficacy.Moreover,we validated the moderated mediation model.Findings suggest that leaders can stimulate employee innovative behavior through expressing expectations and they also need to consider the boundary conditions.
文摘As an old Chinese saying goes,knowledge changes fate.An ordinary college student carries expectations of several generations of his or her family.Consequently,a vast majority of high school graduates applying for college prefer to choose colleges and majors with good employment prospects.Two years ago,facing hundreds of majors,I was caught in a dilemma.Law seemed appealing,as it could offer a high income and a worry-free life.
基金supported by Tehran University of Medical Sciences,Tehran,Iran(no.9711199007).
文摘Objective:The aim of this study was to investigate the health expectations(HEs)in patients with diabetes and the factors affecting it using an integrative systematic review.Methods:A comprehensive literature search was conducted in databases including PubMed,Scopus,Science Direct,Google Scholar,ProQuest,CINAHL,SID,Iran Doc,and Magiran without time limitation using related keywords.The systematic literature search was performed using a guide provided by York University.Results:From a total of 1883 articles,17 of them finally met the eligibility criteria.According to the findings of this study,HE of diabetic patients was included in four categories:“dynamism,”“consequentialism,”“comprehensive care,”and“access to facilities.”Also,these expectations can be influenced by various factors,including“developments in societies,”“changing the conditions of health care systems,”and“individual factors.”Conclusions:Health professionals should pay attention to the expectations of diabetic patients who are involved in complex disease conditions and consider meeting them as a key factor in providing patient-centered care,improving health outcomes,and patient satisfaction.
文摘This study investigates the return dynamics,volatility structure,and risk characteristics of five representative S&P 500 stocks:Johnson&Johnson,Microsoft,NVIDIA,Coca-Cola,and Home Depot,using ARMA-GARCH models.Descriptive statistics and diagnostic tests confirm non-normality,negative skewness,fat tails,and volatility clustering,providing strong justification for conditional mean-variance modelling.Optimal model specifications are selected via the Bayesian Information Criterion,with EGARCH frameworks generally outperforming alternative GARCH variants in capturing asymmetric volatility responses.Rolling-window forecasts for 2024Q1 show that the models generate stable and reliable volatility predictions for low-volatility stocks(JNJ,KO),while performance is weaker for highly volatile stocks(NVDA),highlighting structural limitations under extreme market shifts.To evaluate risk management implications,one percent Value-at-Risk and expected shortfall were computed and backtested.Results indicated conservative tail-risk forecasts,with violation rates well within acceptable thresholds.Portfolio applications are further explored by constructing the Global Minimum Variance Portfolio(GMVP)and the Maximum Sharpe Ratio(Max SR)portfolio using rolling covariance estimates.Out-of-sample backtesting demonstrated that the GMVP delivered low volatility but modest returns,whereas the Max SR portfolio achieved significantly higher performance,consistent with the risk-return trade-off.Overall,the findings confirm that ARMA-GARCH models are effective tools for modelling conditional volatility and informing dynamic asset allocation.However,their limited adaptability to jump risk and nonlinear structural breaks underscores the need for more advanced modelling approaches in high-volatility environments.
基金funded by the National Institute for Health Research (NIHR) Leicester Biomedical Research Centre (BRC)the Applied Research Collaborations East Midlands (ARC-EM)supported by a UKRI project grant (MR/T031816/1)。
文摘Background There is a lack of research examining the interplay between objectively measured physical activity volume and intensity with life expectancy.The purpose of the study was to investigate the interplay between objectively measured PA volume and intensity profiles with modeled life expectancy in women and men within the UK Biobank cohort study and interpret findings in relation to brisk walking.Methods Individuals from UK Biobank with wrist-worn accelerometer data were included.The average acceleration and intensity gradient were extracted to describe the physical activity volume and intensity profile.Mortality data were obtained from national registries.Adjusted life expectancies were estimated using parametric flexible survival models.Results 40,953(57.1%)women(median age=61.9 years)and 30,820(42.9%)men(63.1 years)were included.Over a median follow-up of 6.9 years,there were 1719(2.4%)deaths(733 in women;986 in men).At 60 years,life expectancy was progressively longer for higher physical activity volume and intensity profiles,reaching 95.6 years in women and 94.5 years in men at the 90th centile for both volume and intensity,corresponding to 3.4 additional years(95%confidence interval(95%CI):2.4-4.4)in women and 4.6 additional years(95%CI:3.6-5.6)in men compared to those at the 10th centiles.An additional 10-min or 30-min daily brisk walk was associated with 0.9(95%CI:0.5-1.3)and 1.4 years(95%CI:0.9-1.9)longer life expectancy,respectively,in inactive women;and 1.4 years(95%CI:1.0-1.8)and 2.5(95%CI:1.9-3.1)in inactive men.Conclusion Higher physical activity volumes were associated with longer life expectancy,with a higher physical activity intensity profile further adding to a longer life.Adding as little as a 10-min brisk walk to daily activity patterns may result in a meaningful benefit to life expectancy.
基金funded by National Natural Science Foundation of China(grant No.52405255)Special Program of Huzhou(grant No.2023GZ05)+1 种基金Projects of Huzhou Science and Technology Correspondent(grant No.2023KT76)Guangdong Basic and Applied Basic Research Foundation(grant No.2025A1515010487)。
文摘Variable-fidelity(VF)surrogate models have received increasing attention in engineering design optimization as they can approximate expensive high-fidelity(HF)simulations with reduced computational power.A key challenge to building a VF model is devising an adaptive model updating strategy that jointly selects additional low-fidelity(LF)and/or HF samples.The additional samples must enhance the model accuracy while maximizing the computational efficiency.We propose ISMA-VFEEI,a global optimization framework that integrates an Improved Slime-Mould Algorithm(ISMA)and a Variable-Fidelity Expected Extension Improvement(VFEEI)learning function to construct a VF surrogate model efficiently.First,A cost-aware VFEEI function guides the adaptive LF/HF sampling by explicitly incorporating evaluation cost and existing sample proximity.Second,ISMA is employed to solve the resulting non-convex optimization problem and identify global optimal infill points for model enhancement.The efficacy of ISMA-VFEEI is demonstrated through six numerical benchmarks and one real-world engineering case study.The engineering case study of a high-speed railway Electric Multiple Unit(EMU),the optimization objective of a sanding device attained a minimum value of 1.546 using only 20 HF evaluations,outperforming all the compared methods.
基金supported in part by the National Key Research and Development Program of China with Grant number 2021YFB2900502。
文摘In this paper,an index modulation(IM)aided uplink orthogonal time frequency space modulation(OTFS)structure for sparse code multiple access(SCMA)is proposed.To be more specific,the information bits are firstly partitioned for transmit antenna(TA)selection and sparse codeword mapping,respectively.Subsequently,the codewords deployed on the 2-dimensional(2D)delay-Doppler(DD)plane are transmitted by the selected TA,and the superimposed signals are jointly detected at the receiver.Furthermore,a low-complexity zero-embedded expectation propagation(ZE-EP)detector is conceived,where the codebooks are extended with zero vectors to reflect the silent indices.The simulation results demonstrate that the proposed IM-OTFS-SCMA system is capable of providing significant performance gain over the OTFS-SCMA counterpart.
基金This research received grant from 2022 Undergraduate Education and Teaching Research Project of Fujian Medical University(22028).
文摘Objective:This study aimed to investigate the learning expectations of undergraduate nursing students regarding the flipped Health Assessment course.Methods:This descriptive,qualitative study was conducted at a medical university in Fuzhou,Fujian Province,China.An interview outline was designed based on the core dimensions of Expectation Confirmation Theory(expectation sources,expectation content,and expectation importance).Thirty second-year undergraduate nursing students who had completed first-year basic medical courses and were about to take the flipped Health Assessment course were interviewed between June and July 2022.Interview data were analyzed using qualitative content analysis.Results:Five major themes and thirteen subthemes were identified.Theme 1 was expectation sourcesperceived learning difficulties from past experiences,which included four subthemes:insufficient autonomous learning ability,confusion regarding learning methods,insufficient engagement in learning,and low professional identity.Theme 2 included knowledge and information expectations,which comprised three subthemes:knowledge to improve professional competence,knowledge to enhance academic competitiveness,and knowledge to boost self-efficacy.Theme 3 comprised logical expectations and included two subthemes:flexible teaching methods and efficient instructional tools.Theme 4,pleasure expectations,included two subthemes:vivid teaching styles and diversified teaching evaluations.Theme 5 comprised professional value expectations and included two subthemes:teachers'responsible professional attitudes and gentle emotional support.Conclusion:Students'learning expectations originate from perceived learning difficulties,such as insufficient learning autonomy and engagement,confusion about learning methods,and a lack of professional identity.They showed various learning expectations for the flipped Health Assessment course,including knowledge and information,logic,pleasure,and professional value expectations.
文摘With the industrialization of agriculture and the advancement of medical care,human life expectancy has increased considerably and continues to rise steadily.This results in novel and unprecedented challenges,namely obesity and neurodegeneration.
文摘In the new released article of the Journal of Sport and Health Science,Zaccardi et al.1 provide compelling evidence that engaging in higher volumes and intensities of physical activity(PA)increases life expectancy in older men and women enrolled in the UK Biobank study.The study included 30,820 men and 40,953 women with median ages of 63.1 years and 61.9 years,respectively.Study participants wore accelerometers to track their time and intensity of PA for 7 days at baseline.
文摘How do individuals adjust their savings and consumption behaviors in response to the combined effects of increased life expectancy and declining pension replacement rates?This study constructs a life-cycle model,using changes in conditional survival probabilities as a proxy for shifts in individual life expectancy,to examine consumption behavior under the dual backdrop of prolonged longevity and a gradual decline in pension replacement rates.The results suggest that changes in life expectancy and pension replacement rates together explain 8.9%to 10.2%of the observed decline in consumption in recent years,with both variables playing equally significant explanatory roles.Furthermore,we find that,to fully offset the negative impact of increased life expectancy on consumption,the pension replacement rate must reach at least 82%.These findings offer theoretical and policy implications for improving the quality of life in later years among enterprise employees in the context of population aging.
