The goal of village governance is to improve the well-being of farmers,so this study aims to measure the impact the quality of village governance on the well-being of farmers.It also examines the heterogeneity of this...The goal of village governance is to improve the well-being of farmers,so this study aims to measure the impact the quality of village governance on the well-being of farmers.It also examines the heterogeneity of this impact across different farmer groups from the perspectives of income levels and occupational differentiation.To this end,this study developed an indicator system based on survey data collected from 1,442 farmers in the Sichuan,Shaanxi,and Gansu provinces,as well as the Ningxia Hui autonomous region.Multiple linear regression models were then used to analyze this data,and the findings revealed that improvements in the quality of village governance significantly increased the well-being of farmers.Specifically,primary-level empowerment and capacity building were shown to contribute the most to the enhancement of the farmers’well-being,followed by social inclusion,and social cohesion was found to have only a minimal effect.In terms of income levels,improving the quality of village governance benefited middle-income farmers the most,followed by low-income farmers,and it had the least effect on high-income farmers.In terms of occupations,full-time farmers gained the most from improvements in the quality of village governance,followed by off-farm farmers,with part-time farmers benefiting the least.Based on these findings,this study suggests that policymakers should improve the quality of village governance to enhance the well-being of farmers,focusing on the impact that level of income and occupational differentiation have on village governance.展开更多
Objective:The study of effective factors on the quality of life(QoL),as an important criterion,in the outcome of new therapeutic and preventive strategies in human immunodeficiency virus(HIV)has been considered by res...Objective:The study of effective factors on the quality of life(QoL),as an important criterion,in the outcome of new therapeutic and preventive strategies in human immunodeficiency virus(HIV)has been considered by researchers.To study the relationship between spiritual well-being and Health-Related Quality of Life(HRQoL)and some related factors in patients with Acquired Immunodeficiency Syndrome([AIDS]/HIV).Methods:In this cross-sectional study,224 people were selected as the study population(112 were male and 112 were female)from patients with AIDS/HIV at the Behavioral Counseling Center of Shiraz with available sampling method.The research tool was Palutzian&Ellison well-being scale and QoL Questionnaire(SF-36).Data were analyzed using Pearson correlation test.Results:There was a significant direct relationship between physical function dimensions(P=0.003).There was a significant relationship between general well-being,mental well-being,and total spiritual well-being(P<0.001).There was a statistically significant relationship between the dimensions of QoL and spiritual well-being with some age section of the patients,and their occupation and education(P<0.001).Conclusions:Spirituality has an impact on the QoL dimensions.Therefore,HIV positive people’s quality of life could be improved by the possibility of the spiritual well-being promotion as a method of adaptation with the disease.展开更多
A fundamental requirement for proper measurement of well-being in diverse contexts is the appropriate translation of well-being measures into the languages spoken by the specific population.The aim of this paper is to...A fundamental requirement for proper measurement of well-being in diverse contexts is the appropriate translation of well-being measures into the languages spoken by the specific population.The aim of this paper is to identify measures of well-being that have been translated into African languages up to the year 2019 and make suggestions for researchers who are faced with the challenge of translating well-being instruments into local languages.Online databases were searched to identify published studies reporting the translation of well-being instruments into African languages.Some researchers were further contacted and requested to provide relevant studies.A total of 352 publications were retrieved and 44 translated measures met the inclusion criteria.Findings showed that all the translated African language versions of existing measures were published between 2006 and 2019.Although the published translations were increasingly widespread,the distribution of available studies was uneven,with very low published translation activity in East and North Africa and a preponderance of publications on translated instruments in South Africa.The authors suggest deriving population norms for relevant translations;increasing funding and other resources for translation projects;developing cross-national collaborations on translations;and making the translated versions of well-being instruments more accessible for use by other researchers.展开更多
BACKGROUND Schizophrenia is a common and severe mental disorder characterized by severe thought disturbances,hallucinations,delusions,and emotional instability.For some patients,conventional treatment methods may not ...BACKGROUND Schizophrenia is a common and severe mental disorder characterized by severe thought disturbances,hallucinations,delusions,and emotional instability.For some patients,conventional treatment methods may not effectively alleviate symptoms,necessitating the use of alternative therapeutic approaches.Modified electroconvulsive therapy(MECT)is an effective treatment modality for schizophrenia,inducing anti-depressive and antipsychotic effects through the stimulation of brain electrical activity.AIM To explore the impact of psychological nursing intervention(PNI)before and after MECT on the efficacy and quality of life of patients with schizophrenia.METHODS Eighty patients with schizophrenia who received MECT treatment from 2021 to 2023 were randomly divided into two groups:The intervention group(n=40)and the control group(n=40).The intervention group received PNI before and after MECT,while the control group received routine nursing care.The efficacy of MECT was evaluated by the Positive and Negative Syndrome Scale(PANSS)and the Clinical Global Impression Scale(CGI)before and after the treatment.The quality of life was assessed by the Short Form 36 Health Survey(SF-36)after the treatment.RESUITS The intervention group had significantly lower scores of PANSS and CGI than the control group after the treatment(P<0.05).The intervention group also had significantly higher scores of SF-36 than the control group in all domains except physical functioning(P<0.05).CONCLUSION PNI before and after MECT can improve the efficacy and quality of life of patients with schizophrenia.It is suggested that nurses should provide individualized and comprehensive psychological care for patients undergoing MECT to enhance their recovery and well-being.展开更多
An evaluation scale of medical services quality was developed on the basis of "patients' experience". The questionnaires were developed by, among others, searching relevant literature, col- lecting well-established...An evaluation scale of medical services quality was developed on the basis of "patients' experience". The questionnaires were developed by, among others, searching relevant literature, col- lecting well-established assessment scales, measuring patients' experience and satisfaction, brain-storming, literature analysis. Delphi method was adopted for expert consultation. Scale items were screened and revised. The key indexes were converted. Field surveys were conducted for testing the reliability and validity of the scale. Our modified evaluation scale for measuring medical services quality based on "patients' experience" included 6 dimensions (tangibility, reliability, responsiveness, assurance, empathy and continuity), and 50 items. The novel scale based on "patients' experience" may better serve the purpose of assessin~ medical services quality.展开更多
One of the most important points in the meta-analyses is certainly represented by the assessment of the quality of the studies included in such research. The meta-analyses are considered the highest level of evidence ...One of the most important points in the meta-analyses is certainly represented by the assessment of the quality of the studies included in such research. The meta-analyses are considered the highest level of evidence in science. Also for this reason, the quality of the studies included should be accurately evaluated by standardized tools. The overall results of the metaanalysis depend indeed also on a rigorous evaluation of the studies quality. Among all the possible tools for this complex evaluation, the Newcastle Ottawa Scale(NOS) is one of the most used worldwide, above all for observational studies. In this review, we will discuss the strengths and limitation of the NOS, also on the basis of the branch of science in which it has been applied.展开更多
Purpose :To describe the development of the of scale quality of life which can measure the quality of life of Chinese patients with visual impairment. Methods: Based on a thorough literature search and consultation wi...Purpose :To describe the development of the of scale quality of life which can measure the quality of life of Chinese patients with visual impairment. Methods: Based on a thorough literature search and consultation with ophthalmologists and public health professionals, 20 items were selected to create a scale. Fifty-seven cataract patients with vision impairment and 60 glaucoma patients with vision impairment and visual field loss were measured by the scale to evaluate the validity, reliability and responsiveness of the scale.Results: The scale covered four domains of the quality of life(QOL). The criterion related validity of the scale: r = 0. 6865 (P=0. 001). The test-retest reliability of the scale: r = 0. 8959(P = 0. 001). Coronback’s alpha was 0. 9359. The variance ratio (VR) of intra-individual variance to inter- individual variance was 0. 0551 for overall scores. The correlation coefficient of split-half method was 0. 9553. The responsiveness; T-test, T = 5. 95 (P = 0. 001), effect size展开更多
The aim of this study is to examine the relationship between environment and personal well-being using a sample of 562 urban employees from three cities in Liaoning province in the People's Republic of China.In co...The aim of this study is to examine the relationship between environment and personal well-being using a sample of 562 urban employees from three cities in Liaoning province in the People's Republic of China.In contrast to previous studies,this study controlled positive affectivity (PA),negative affectivity (NA),job satisfaction and Big Five personality traits.In addition,the research variables of personal well-being index (PWI),positive affectivity,negative affectivity,job satisfaction,Big Five,and environmental satisfaction are measured with multi-item scales.The research finds that environmental satisfaction is positively related to personal well-being,suggesting that improvement of the natural surroundings in the cities can improve people's well-being.展开更多
Using subjective well-being scale for adolescents, this article studies the subjective well-being of 900 adolescents from Han, Qiang and Yi nationalities in mainland of China. Results: In general, the SWB of the adole...Using subjective well-being scale for adolescents, this article studies the subjective well-being of 900 adolescents from Han, Qiang and Yi nationalities in mainland of China. Results: In general, the SWB of the adolescents from the three nationalities is at the level of more than medium. Their SWB is significant difference in the aspects of nationality, grade and academic records. In view of interaction, their SWB is also of differ- rent dimensions because the interrelated effects are significant between genders and grades, between genders and academic records, between grades and academic records, and even between grades and their parental educational levels and parental occupations.展开更多
Quality of life research is an emerging and rapidly developing health measurement technology.Quality of life assessment is performed using scales.Accurate quality of life assessment provides comprehensive information ...Quality of life research is an emerging and rapidly developing health measurement technology.Quality of life assessment is performed using scales.Accurate quality of life assessment provides comprehensive information of patient which allows clinicians to put emphasis on overall quality of life(Total QOL)of patient.Quality of life scales have been applied for analysis of diseases such as leukemia and immune thrombocytopenia.This article reviews the use of commonly used quality of life scales for hematological diseases.展开更多
Loads in large scale industrial enterprises are always various and complex, causing insecure power quality. Meanwhile, some sensitive loads or precise instruments demand for high power quality. When voltage flicker or...Loads in large scale industrial enterprises are always various and complex, causing insecure power quality. Meanwhile, some sensitive loads or precise instruments demand for high power quality. When voltage flicker or harmonics occurs, dynamic voltage restorer (DVR) can be used to stabilize the load-side voltage, which is a good manner of improving power quality. The paper explains the load demand in large scale industrial enterprises, analyzes several common voltage compensation scheme of DVR, and comes up with another voltage compensation scheme of DVR applied for double power supply with double load. A Simulink model according to the new scheme is also built in MATLAB/Simulink to test its performance. Simulation results show that the proposed scheme can guarantee the load-side voltage stability, which is an effective scheme for managing power quality.展开更多
In this paper, we conduct research on the large-scale network intrusion mode based on the principal component analysis and dropquality sampling. With the growing of network security issues, invasion detection becomes ...In this paper, we conduct research on the large-scale network intrusion mode based on the principal component analysis and dropquality sampling. With the growing of network security issues, invasion detection becomes the study hotspot. There are two main types of thatinvasion detection technology, the fi rst is that misuse detection and the anomaly detection. Misuse detection can more accurately detect attacks,but high non-response rates, anomaly detection could detect the unknown attacks, but higher rate of false positives. Network invasion detectionproblem is summed up in the network data fl ow of discriminant problem, namely the judgment of network data fl ow is normal or malicious andin this sense here invasion detection problem can be understood as a pattern recognition problem. Our research integrates the PCA and samplingtechnique to propose the new idea on the IDS that is innovative and will promote the development of the corresponding techniques.展开更多
AIM:To explore the relationship between ocular and systemic conditions and the impact of ocular complications on the quality of life(QOL)in patients after allogeneic hematopoietic stem cell transplantation(ALLO-HSCT)....AIM:To explore the relationship between ocular and systemic conditions and the impact of ocular complications on the quality of life(QOL)in patients after allogeneic hematopoietic stem cell transplantation(ALLO-HSCT).METHODS:Forty-four patients with severe hematopoietic disease were enrolled after ALLO-HSCT at our center from July 2018 to October 2020.They completed two questionnaires:the Ocular Surface Disease Index(OSDI)and the quality-of-life scale for Chinese patients with visual impairment(SQOL-DV1).Ocular conditions and systemic conditions were also assessed.RESULTS:Eye damage was correlated with total bilirubin(P=0.005),and gamma-glutamyl transferase(GGT)(P=0.021).There was no significant correlation between the overall QOL score and OSDI(P=0.8226)or SQOLDV1(P=0.9526)scores.The OSDI and the overall QOL score were not correlated with ocular conditions,including best-corrected visual acuity(BCVA),intraocular pressure,Schirmer tear test II,sodium fluorescein staining,tear film breakup time,and tear meniscus height.SQOLDV1 was correlated with BCVA(P=0.0007),sodium fluorescein staining(P=0.007),and tear film breakup time(P=0.0146).CONCLUSION:In some patients,early ocular symptoms are not evident after ALLO-HSCT,while ocular surface complications can be observed after a comprehensive ophthalmological examination.Especially for those with elevated total bilirubin or GGT,regular ophthalmic follow-up visits are essential to diagnose and treat ocular graft versus host disease(o GVHD),especially for patients with elevated total bilirubin or GGT.展开更多
目的基于体验质量(Quality of Experience,QoE)理论构建智慧医院平台可用性量表,为智慧医院建设提供科学测量工具。方法采用文献回顾、焦点会议法、预调查对量表条目进行筛选、修订,形成正式量表。便利选取山东省8所智慧医院平台的1000...目的基于体验质量(Quality of Experience,QoE)理论构建智慧医院平台可用性量表,为智慧医院建设提供科学测量工具。方法采用文献回顾、焦点会议法、预调查对量表条目进行筛选、修订,形成正式量表。便利选取山东省8所智慧医院平台的1000名用户进行调查,评价量表的信度和效度。结果智慧医院平台可用性量表包括6个维度24个条目。探索性因子提取出6个公因子:安全性、易用性、影响性、响应性、可靠性、灵活性。累计方差贡献率为64.045%,总体Cronbach’sα系数为0.941,6个维度的Cronbach’sα系数为0.782~0.963,重测信度为0.967。平均内容效度指数为0.972,条目水平内容效度指数为0.86~1.00。量表6个维度和系统可用性量表相关性系数为0.606~0.653,总体相关系数为0.647。结论基于QoE理论的智慧医院平台可用性量表具有较好的信度和效度,可作为用户对智慧医院平台体验情况的测量工具。展开更多
目的 翻译外周动脉疾病生活质量量表(vascular quality of life questionnaire, VascuQOL)再施以优化,得到和我国文化背景与语言习惯相契合的汉化版VascuQOL。方法 通过顺译、回译、修改条目、专家咨询、文化调适及预调查,得到汉化版Vas...目的 翻译外周动脉疾病生活质量量表(vascular quality of life questionnaire, VascuQOL)再施以优化,得到和我国文化背景与语言习惯相契合的汉化版VascuQOL。方法 通过顺译、回译、修改条目、专家咨询、文化调适及预调查,得到汉化版VascuQOL;以重庆医科大学附属第一医院血管外科302名下肢动脉硬化闭塞症患者为研究对象,对量表的信效度展开检验。结果 汉化版VascuQOL各条目临界比值为3.086~17.605;量表各条目评分和总分之间的关联系数为0.237~0.695(P<0.01);量表各条目内容效度为0.861~1.000,总量表内容效度为0.986;探索性因子分析(EFA)找到特征根在1以上的5项公因子,累计方差贡献率是67.39%,Bartlett’s球形检验中χ2值为3289.061(P<0.01);采用欧洲五维健康量表EQ-5D-5L作为校标,Pearson相关分析为0.697;内部一致性信度Cronbach’sɑ系数为0.871,各维度Cronbach’sɑ系数分别为0.893、0.859、0.759、0.569、0.727(P<0.01);重测信度为0.996。结论 汉化版VascuQOL具有良好的信度和效度,可用于我国下肢动脉硬化闭塞症患者的生活质量测评。展开更多
基金funded by the Fundamental Research Funds for the Central Universities“Research on the Impact of Social Quality and Political Trust on Farmers’Well-Being in the Post-Poverty Alleviation Era”(21lzujbkydx012)the Project of Gansu Province for Philosophy and Social Sciences Planning“Research on the Strategies to Improve Farmers’Well-Being in Gansu Province From the Perspective of Social Quality”(2021YB012).
文摘The goal of village governance is to improve the well-being of farmers,so this study aims to measure the impact the quality of village governance on the well-being of farmers.It also examines the heterogeneity of this impact across different farmer groups from the perspectives of income levels and occupational differentiation.To this end,this study developed an indicator system based on survey data collected from 1,442 farmers in the Sichuan,Shaanxi,and Gansu provinces,as well as the Ningxia Hui autonomous region.Multiple linear regression models were then used to analyze this data,and the findings revealed that improvements in the quality of village governance significantly increased the well-being of farmers.Specifically,primary-level empowerment and capacity building were shown to contribute the most to the enhancement of the farmers’well-being,followed by social inclusion,and social cohesion was found to have only a minimal effect.In terms of income levels,improving the quality of village governance benefited middle-income farmers the most,followed by low-income farmers,and it had the least effect on high-income farmers.In terms of occupations,full-time farmers gained the most from improvements in the quality of village governance,followed by off-farm farmers,with part-time farmers benefiting the least.Based on these findings,this study suggests that policymakers should improve the quality of village governance to enhance the well-being of farmers,focusing on the impact that level of income and occupational differentiation have on village governance.
文摘Objective:The study of effective factors on the quality of life(QoL),as an important criterion,in the outcome of new therapeutic and preventive strategies in human immunodeficiency virus(HIV)has been considered by researchers.To study the relationship between spiritual well-being and Health-Related Quality of Life(HRQoL)and some related factors in patients with Acquired Immunodeficiency Syndrome([AIDS]/HIV).Methods:In this cross-sectional study,224 people were selected as the study population(112 were male and 112 were female)from patients with AIDS/HIV at the Behavioral Counseling Center of Shiraz with available sampling method.The research tool was Palutzian&Ellison well-being scale and QoL Questionnaire(SF-36).Data were analyzed using Pearson correlation test.Results:There was a significant direct relationship between physical function dimensions(P=0.003).There was a significant relationship between general well-being,mental well-being,and total spiritual well-being(P<0.001).There was a statistically significant relationship between the dimensions of QoL and spiritual well-being with some age section of the patients,and their occupation and education(P<0.001).Conclusions:Spirituality has an impact on the QoL dimensions.Therefore,HIV positive people’s quality of life could be improved by the possibility of the spiritual well-being promotion as a method of adaptation with the disease.
文摘A fundamental requirement for proper measurement of well-being in diverse contexts is the appropriate translation of well-being measures into the languages spoken by the specific population.The aim of this paper is to identify measures of well-being that have been translated into African languages up to the year 2019 and make suggestions for researchers who are faced with the challenge of translating well-being instruments into local languages.Online databases were searched to identify published studies reporting the translation of well-being instruments into African languages.Some researchers were further contacted and requested to provide relevant studies.A total of 352 publications were retrieved and 44 translated measures met the inclusion criteria.Findings showed that all the translated African language versions of existing measures were published between 2006 and 2019.Although the published translations were increasingly widespread,the distribution of available studies was uneven,with very low published translation activity in East and North Africa and a preponderance of publications on translated instruments in South Africa.The authors suggest deriving population norms for relevant translations;increasing funding and other resources for translation projects;developing cross-national collaborations on translations;and making the translated versions of well-being instruments more accessible for use by other researchers.
文摘BACKGROUND Schizophrenia is a common and severe mental disorder characterized by severe thought disturbances,hallucinations,delusions,and emotional instability.For some patients,conventional treatment methods may not effectively alleviate symptoms,necessitating the use of alternative therapeutic approaches.Modified electroconvulsive therapy(MECT)is an effective treatment modality for schizophrenia,inducing anti-depressive and antipsychotic effects through the stimulation of brain electrical activity.AIM To explore the impact of psychological nursing intervention(PNI)before and after MECT on the efficacy and quality of life of patients with schizophrenia.METHODS Eighty patients with schizophrenia who received MECT treatment from 2021 to 2023 were randomly divided into two groups:The intervention group(n=40)and the control group(n=40).The intervention group received PNI before and after MECT,while the control group received routine nursing care.The efficacy of MECT was evaluated by the Positive and Negative Syndrome Scale(PANSS)and the Clinical Global Impression Scale(CGI)before and after the treatment.The quality of life was assessed by the Short Form 36 Health Survey(SF-36)after the treatment.RESUITS The intervention group had significantly lower scores of PANSS and CGI than the control group after the treatment(P<0.05).The intervention group also had significantly higher scores of SF-36 than the control group in all domains except physical functioning(P<0.05).CONCLUSION PNI before and after MECT can improve the efficacy and quality of life of patients with schizophrenia.It is suggested that nurses should provide individualized and comprehensive psychological care for patients undergoing MECT to enhance their recovery and well-being.
文摘An evaluation scale of medical services quality was developed on the basis of "patients' experience". The questionnaires were developed by, among others, searching relevant literature, col- lecting well-established assessment scales, measuring patients' experience and satisfaction, brain-storming, literature analysis. Delphi method was adopted for expert consultation. Scale items were screened and revised. The key indexes were converted. Field surveys were conducted for testing the reliability and validity of the scale. Our modified evaluation scale for measuring medical services quality based on "patients' experience" included 6 dimensions (tangibility, reliability, responsiveness, assurance, empathy and continuity), and 50 items. The novel scale based on "patients' experience" may better serve the purpose of assessin~ medical services quality.
文摘One of the most important points in the meta-analyses is certainly represented by the assessment of the quality of the studies included in such research. The meta-analyses are considered the highest level of evidence in science. Also for this reason, the quality of the studies included should be accurately evaluated by standardized tools. The overall results of the metaanalysis depend indeed also on a rigorous evaluation of the studies quality. Among all the possible tools for this complex evaluation, the Newcastle Ottawa Scale(NOS) is one of the most used worldwide, above all for observational studies. In this review, we will discuss the strengths and limitation of the NOS, also on the basis of the branch of science in which it has been applied.
文摘Purpose :To describe the development of the of scale quality of life which can measure the quality of life of Chinese patients with visual impairment. Methods: Based on a thorough literature search and consultation with ophthalmologists and public health professionals, 20 items were selected to create a scale. Fifty-seven cataract patients with vision impairment and 60 glaucoma patients with vision impairment and visual field loss were measured by the scale to evaluate the validity, reliability and responsiveness of the scale.Results: The scale covered four domains of the quality of life(QOL). The criterion related validity of the scale: r = 0. 6865 (P=0. 001). The test-retest reliability of the scale: r = 0. 8959(P = 0. 001). Coronback’s alpha was 0. 9359. The variance ratio (VR) of intra-individual variance to inter- individual variance was 0. 0551 for overall scores. The correlation coefficient of split-half method was 0. 9553. The responsiveness; T-test, T = 5. 95 (P = 0. 001), effect size
基金supported by the Fundamental Research Funds for the Central Universities (Grant No. DC10040202)the Philosophy and Social Science Planning Fund Project of Liaoning Province (Grant No. L09DJY091)Humanities and Social SciencesYouth Fund of Ministry of Education (Grant No.11YJC850030)
文摘The aim of this study is to examine the relationship between environment and personal well-being using a sample of 562 urban employees from three cities in Liaoning province in the People's Republic of China.In contrast to previous studies,this study controlled positive affectivity (PA),negative affectivity (NA),job satisfaction and Big Five personality traits.In addition,the research variables of personal well-being index (PWI),positive affectivity,negative affectivity,job satisfaction,Big Five,and environmental satisfaction are measured with multi-item scales.The research finds that environmental satisfaction is positively related to personal well-being,suggesting that improvement of the natural surroundings in the cities can improve people's well-being.
文摘Using subjective well-being scale for adolescents, this article studies the subjective well-being of 900 adolescents from Han, Qiang and Yi nationalities in mainland of China. Results: In general, the SWB of the adolescents from the three nationalities is at the level of more than medium. Their SWB is significant difference in the aspects of nationality, grade and academic records. In view of interaction, their SWB is also of differ- rent dimensions because the interrelated effects are significant between genders and grades, between genders and academic records, between grades and academic records, and even between grades and their parental educational levels and parental occupations.
文摘Quality of life research is an emerging and rapidly developing health measurement technology.Quality of life assessment is performed using scales.Accurate quality of life assessment provides comprehensive information of patient which allows clinicians to put emphasis on overall quality of life(Total QOL)of patient.Quality of life scales have been applied for analysis of diseases such as leukemia and immune thrombocytopenia.This article reviews the use of commonly used quality of life scales for hematological diseases.
文摘Loads in large scale industrial enterprises are always various and complex, causing insecure power quality. Meanwhile, some sensitive loads or precise instruments demand for high power quality. When voltage flicker or harmonics occurs, dynamic voltage restorer (DVR) can be used to stabilize the load-side voltage, which is a good manner of improving power quality. The paper explains the load demand in large scale industrial enterprises, analyzes several common voltage compensation scheme of DVR, and comes up with another voltage compensation scheme of DVR applied for double power supply with double load. A Simulink model according to the new scheme is also built in MATLAB/Simulink to test its performance. Simulation results show that the proposed scheme can guarantee the load-side voltage stability, which is an effective scheme for managing power quality.
文摘In this paper, we conduct research on the large-scale network intrusion mode based on the principal component analysis and dropquality sampling. With the growing of network security issues, invasion detection becomes the study hotspot. There are two main types of thatinvasion detection technology, the fi rst is that misuse detection and the anomaly detection. Misuse detection can more accurately detect attacks,but high non-response rates, anomaly detection could detect the unknown attacks, but higher rate of false positives. Network invasion detectionproblem is summed up in the network data fl ow of discriminant problem, namely the judgment of network data fl ow is normal or malicious andin this sense here invasion detection problem can be understood as a pattern recognition problem. Our research integrates the PCA and samplingtechnique to propose the new idea on the IDS that is innovative and will promote the development of the corresponding techniques.
基金Supported by Natural Science Foundation of Guangdong Province,China(No.2019A1515011212)Beijing Bethune Charitable Foundation(No.BJ-GY2021014J)。
文摘AIM:To explore the relationship between ocular and systemic conditions and the impact of ocular complications on the quality of life(QOL)in patients after allogeneic hematopoietic stem cell transplantation(ALLO-HSCT).METHODS:Forty-four patients with severe hematopoietic disease were enrolled after ALLO-HSCT at our center from July 2018 to October 2020.They completed two questionnaires:the Ocular Surface Disease Index(OSDI)and the quality-of-life scale for Chinese patients with visual impairment(SQOL-DV1).Ocular conditions and systemic conditions were also assessed.RESULTS:Eye damage was correlated with total bilirubin(P=0.005),and gamma-glutamyl transferase(GGT)(P=0.021).There was no significant correlation between the overall QOL score and OSDI(P=0.8226)or SQOLDV1(P=0.9526)scores.The OSDI and the overall QOL score were not correlated with ocular conditions,including best-corrected visual acuity(BCVA),intraocular pressure,Schirmer tear test II,sodium fluorescein staining,tear film breakup time,and tear meniscus height.SQOLDV1 was correlated with BCVA(P=0.0007),sodium fluorescein staining(P=0.007),and tear film breakup time(P=0.0146).CONCLUSION:In some patients,early ocular symptoms are not evident after ALLO-HSCT,while ocular surface complications can be observed after a comprehensive ophthalmological examination.Especially for those with elevated total bilirubin or GGT,regular ophthalmic follow-up visits are essential to diagnose and treat ocular graft versus host disease(o GVHD),especially for patients with elevated total bilirubin or GGT.
文摘目的基于体验质量(Quality of Experience,QoE)理论构建智慧医院平台可用性量表,为智慧医院建设提供科学测量工具。方法采用文献回顾、焦点会议法、预调查对量表条目进行筛选、修订,形成正式量表。便利选取山东省8所智慧医院平台的1000名用户进行调查,评价量表的信度和效度。结果智慧医院平台可用性量表包括6个维度24个条目。探索性因子提取出6个公因子:安全性、易用性、影响性、响应性、可靠性、灵活性。累计方差贡献率为64.045%,总体Cronbach’sα系数为0.941,6个维度的Cronbach’sα系数为0.782~0.963,重测信度为0.967。平均内容效度指数为0.972,条目水平内容效度指数为0.86~1.00。量表6个维度和系统可用性量表相关性系数为0.606~0.653,总体相关系数为0.647。结论基于QoE理论的智慧医院平台可用性量表具有较好的信度和效度,可作为用户对智慧医院平台体验情况的测量工具。
文摘目的 翻译外周动脉疾病生活质量量表(vascular quality of life questionnaire, VascuQOL)再施以优化,得到和我国文化背景与语言习惯相契合的汉化版VascuQOL。方法 通过顺译、回译、修改条目、专家咨询、文化调适及预调查,得到汉化版VascuQOL;以重庆医科大学附属第一医院血管外科302名下肢动脉硬化闭塞症患者为研究对象,对量表的信效度展开检验。结果 汉化版VascuQOL各条目临界比值为3.086~17.605;量表各条目评分和总分之间的关联系数为0.237~0.695(P<0.01);量表各条目内容效度为0.861~1.000,总量表内容效度为0.986;探索性因子分析(EFA)找到特征根在1以上的5项公因子,累计方差贡献率是67.39%,Bartlett’s球形检验中χ2值为3289.061(P<0.01);采用欧洲五维健康量表EQ-5D-5L作为校标,Pearson相关分析为0.697;内部一致性信度Cronbach’sɑ系数为0.871,各维度Cronbach’sɑ系数分别为0.893、0.859、0.759、0.569、0.727(P<0.01);重测信度为0.996。结论 汉化版VascuQOL具有良好的信度和效度,可用于我国下肢动脉硬化闭塞症患者的生活质量测评。