目的探索中文版癌症自我管理效能量表(strategies used by people to promote health,SUPPH)在肺癌人群中的信、效度研究。方法采用便利抽样法选择上海市5所三级医院的254名肺癌患者进行问卷调查,通过探索性因子分析对254份问卷进行分析...目的探索中文版癌症自我管理效能量表(strategies used by people to promote health,SUPPH)在肺癌人群中的信、效度研究。方法采用便利抽样法选择上海市5所三级医院的254名肺癌患者进行问卷调查,通过探索性因子分析对254份问卷进行分析,评价中文版癌症自我管理效能量表在肺癌人群中的信、效度。结果中文版癌症自我管理效能量表28个条目,得到3因子结构,累计方差贡献率为71.526%,Cronbachα系数为0.864~0.973。结论中文版癌症自我管理效能量表具有良好的信、效度,适合中国文化背景下肺癌人群自我管理效能的测量。展开更多
This paper discusses the approach to the CET (college English test) oral test based on automatic essay marking (AEM). The reliability and validity arouses a dispute on Internet-based CET (iB-CET) oral test in Ch...This paper discusses the approach to the CET (college English test) oral test based on automatic essay marking (AEM). The reliability and validity arouses a dispute on Internet-based CET (iB-CET) oral test in China, leading to the penetration into oral test contents in dialogue, description or comment, and question answering. Then, a probe into transformation from a spoken document into a textual document is touched on a conversion ratio of 72% adopted at the present time, AEM to be carried forward being a necessary hypothesis for Afterwards, this paper focuses on the pipeline in AEM with the content features and the language itself, which is established in two different models in marking for extraction and detection. Through experiments, this paper reveals the fact that an iB-CET oral test can be performed perfectly in the pipeline of spoken documents transformed into textual documents which can be automatically marked. Hence the design of the iB-CET oral test reaches its reliability and validity.展开更多
The performance of the graph-based scheduling for device-to-device communications overlaying cellular networks is studied. The graph-based scheduling consists of two stages, the frequency assignment stage and the time...The performance of the graph-based scheduling for device-to-device communications overlaying cellular networks is studied. The graph-based scheduling consists of two stages, the frequency assignment stage and the time slot scheduling stage. For such scheduling, a theoretical method to analyze the average spectrum efficiency of the D2D subsystem is proposed. The method consists of three steps. First, the frequency assignment stage is analyzed and the approximate formula of the average number of the D2D links which are assigned the same frequency is derived. Secondly, the time slot scheduling stage is analyzed and the approximate formula of the average probability of a D2D link being scheduled in a time slot is derived. Thirdly, the average spectrum efficiency of the D2D subsystem is analyzed and the corresponding approximate formula is derived. Analysis results show that the average spectrum efficiency of the D2D subsystem is approximately inversely linearly proportional to the second- order origin moment of the normalized broadcast radius of D2D links. Simulation results show that the proposed method can correctly predict the average spectrum efficiency of the D2D subsystem.展开更多
Objectives:This study aimed to develop and validate the Nurse’sWorkplace Mental Health Questionnaire(NWMHQ).Methods:The questionnaire was developed based on the two continua model of mental illness and health propose...Objectives:This study aimed to develop and validate the Nurse’sWorkplace Mental Health Questionnaire(NWMHQ).Methods:The questionnaire was developed based on the two continua model of mental illness and health proposed by Keyes.The initial questionnaire was generated through literature review,two rounds of Delphi expert consultation,followed by a pilot survey.Finally,the reliability and validity of the questionnaire were validated through an online survey of 2,815 registered nurses selected from the public hospitals in 11 provinces from June to July 2020.Results:The item-content validity index(I-CVI)of the questionnaire ranged from 0.750 to 1.000 and the average scale-level content validity index(S-CVI/Ave)was 0.906.Cronbach’s a coefficient was 0.948 and test-retest reliability was 0.850.The self-rating depression scale score was negatively related to the NWMHQ score(r=0.664,P<0.01).The exploratory factor analysis(EFA)yielded six factors(emotional status,psychological security,positive relationship,resilience,self-efficacy,and subjective well-being),consisting of 32 items.The cumulative variance contribution rate was 65.58%.Confirmatory factor analysis(CFA)showed an acceptable fit.Conclusion:The NWMHQ developed in this study showed good reliability and validity.This questionnaire may help assess the mental health status of nurses and help nursing managers to develop appropriate targeted psychological interventions.展开更多
Objectives:This study aimed to develop a self-management behavior questionnaire for Chinese enter-ostomy patients and examine its reliability and validity.Methods:Guided by the theory of self-management,an initial que...Objectives:This study aimed to develop a self-management behavior questionnaire for Chinese enter-ostomy patients and examine its reliability and validity.Methods:Guided by the theory of self-management,an initial questionnaire was generated through literature review,group meetings,and two rounds of an expert consultation.Finally,the reliability and validity of the questionnaire were validated through a questionnaire survey of 200 enterostomy patients were selected from the Affiliated Hospital of Medical University from June 2016 to March 2017.Results:The content validity index was 0.80e1.00.The exploratory factor analysis yielded a five-factor(dietary behavior,psychosocial behavior,symptom management behavior,medical compliance behavior,information management behavior),consisting of 40 items.The cumulative variance contri-bution rate was 65.42%.The Cronbach’s a coefficient for the total questionnaire was 0.972,and for the five factors ranged from 0.797 to 0.939,indicating a good internal consistency.The test-retest reliability was 0.867(P<0.01).The self-management behavior questionnaire score was negatively related to the Ostomy Skin Tool score(r=-0.800,P<0.01).Conclusions:The self-management behavior questionnaire developed in this study showed good reli-ability and validity and can be used to assess the self-management behavior of Chinese enterostomy patients.展开更多
Objectives:This study aimed to assess the reliability and validity of the Chinese version of the Head and Neck Information Needs Questionnaire(HaNiQ).Methods:The HaNiQ was translated into a Chinese version using inter...Objectives:This study aimed to assess the reliability and validity of the Chinese version of the Head and Neck Information Needs Questionnaire(HaNiQ).Methods:The HaNiQ was translated into a Chinese version using internationally recognized forwardand back-translation procedures.The reliability and validity of the HaNiQ were measured using Cronbach’s a coefficient,split-half reliability,exploratory factor analysis,and Pearson correlation analysis.Results:A total of 207 patients in different head and neck cancer(HNC)stages and 174 caregivers completed the Chinese version of the HaNiQ.Internal consistencies varied between good and very well(Cronbach’s α coefficient 0.74-0.90);the split-half coefficient and the content validity index(CVI)of the questionnaire were 83.5%and 83.33%,respectively.The cumulative contribution rates of the 5 subscales in patients with HNCand their caregivers were 62.41%and 61.19%,respectively.However,there are some differences between the Chinese questionnaire for caregiver and the original questionnaire regarding the attribution of items.Items 22,23,and 27 in the Psychosocial subscale of the English version were assigned to the Survivorship subscale in the Chinese version for caregivers.Conclusions:The results demonstrated that the Chinese version of the HaNiQ is a reliable and valid instrument for measuring the information needs of patients with HNC and that of their caregivers.Though the structure of the Chinese versionwas different from the English version for caregivers of HNC patients,the Chinese version of the HaNiQ appears to be reliable and would benefit from further testing.展开更多
Objectives:Death fear is the main subject in thanatology.Several researchers have defined different reasons for fear of death.This study aimed to explore the performance of the Farsi version of the Reasons for Death F...Objectives:Death fear is the main subject in thanatology.Several researchers have defined different reasons for fear of death.This study aimed to explore the performance of the Farsi version of the Reasons for Death Fear Scale(RDFS)among a convenience sample of Iranian nurses(n=106).Methods:The nurses were selected by the convenience sampling method and were asked to complete the RDFS,Death Concern Scale,Collett-Lester Fear of Death Scale,Death Anxiety Scale,Death Depression Scale,and Death Obsession Scale.Results:For the RDFS,the Cronbach's a coefficient was 0.90,and the 2-week test-retest reliability was 0.64.The RDFS was correlated at 0.34,0.39,0.50,0.35,and 0.39 to the above-mentioned five scales,indicating its good construct and criterion-related validity.Based on the exploratory factor analysis,the RDFS-identified four factors accounted for 66.20%of the variance and were labeled as"Fear of Pain and Punishment,""Fear of Losing Worldly Involvements,""Religious Transgressions and Failures,"and"Parting from Loved Ones."Conclusions:The RDFS presents good validity and reliability and can be used in clinical and research settings in Iran.展开更多
Objective:Parents of children diagnosed with cancer often experience high levels of illness uncertainty.This study evaluated the psychometric properties of the Chinese Version of the Parent Perception of Uncertainty S...Objective:Parents of children diagnosed with cancer often experience high levels of illness uncertainty.This study evaluated the psychometric properties of the Chinese Version of the Parent Perception of Uncertainty Scale for Childhood Cancer(PPUS-CC)in China's Mainland.Methods:Exploratory factor analysis(EFA)and confirmatory factor analysis(CFA)were performed using study population of 420 parents.The participants were also given the social support questionnaire and assessed using the Self-Rating Anxiety Scale,Zarit Burden Interview,and Self-Rating Depression Scale to test the association with PPUS-CC and obtain the cut-off of the scale.Results:The Chinese version of PPUS-CC includes 14 items,and two factors were extracted by EFA,which could explain the 54.56%variances.The Cronbach'sαof two factors ranged from 0.830 to 0.877.The dimensions of PPUS-CC show statistical association with other scales,and the cut-off is 42.5.Conclusion:The Chinese version of PPUS-CC,as a reliable,valid,and easy-to-use clinical tool,can be adapted in clinical settings as a screening tool to recognize parents with high-risk psychological problems.展开更多
Objective:This paper aims to determine the reliability and validity of the Chinese version of a tool that assesses the quality of life in idiopathic pulmonary fibrosis(cATAQ-IPF)in patients with interstitial lung dise...Objective:This paper aims to determine the reliability and validity of the Chinese version of a tool that assesses the quality of life in idiopathic pulmonary fibrosis(cATAQ-IPF)in patients with interstitial lung disease(ILD).Methods:We used the process of scale introduction to establish cATAQ-IPF.The content validity of the scale was evaluated by six experts.A total of 92 patients with ILD completed the cATAQ-IPF,St.George's respiratory questionnaire(SGRQ),and The Medical Research Council dyspnoea scale at the baseline,and 15 patients completed cATAQ-IPF at the follow-up period 2 weeks later.Thus,yielding data were used to assess various psychometric properties of cATAQ-IPE Intraclass correlation coefficient(ICC),Cronbach'sαcoefficient,content validity index(CVI),item-level CVI(I-CVI),Pearson's coefficients,criterion-relation validity,and known-group validity were used for data analysis.Results:The cATAQ-IPF showed excellent test-retest reliability(ICC=0.95),except for the therapy domain(Cronbach'sα=0.60)and acceptable internal consistency(Cronbach'sα=0.96 for the total).The scale-level CVI was 0.80,and the I-CVI was in the range of 0.78-1.00.The total cATAQ-IPF score was strongly correlated with the SGRQ total score(r=0.71,P<0.01).The cATAQ-IPF score of patients with ILD was 250.74±47.39,and that of patients with IPF was 287.90±22.56.Patients with IPF possessed considerable impairments in health-related quality of life according to the cATAQ-IPF score(t=4.94,P<0.01).Conclusions:The cATAQ-IPF is a reliable and valid instrument for the evaluation of quality of life of Chinese patients with various forms of ILD.展开更多
Objective To study the reliability and validity of the Chinese version of the Lymphedema Quality of Life Questionnaire(LYMQOL)in lymphedema patients.Methods LYMQOL was translated into Chinese.The Chinese version of th...Objective To study the reliability and validity of the Chinese version of the Lymphedema Quality of Life Questionnaire(LYMQOL)in lymphedema patients.Methods LYMQOL was translated into Chinese.The Chinese version of the LYMQOL was distributed with the official Wechat account"Lymphedema Channel"to lymphedema patients who were recruited from October 28^(th),2020 to February 23^(rd),2021.Patients with upper limb lymphedema and lower limb lymphedema completed the LYMQOL-ARM subscale and the LYMQOL-LEG subscale separately,at enrollment,1 week later,and 1 month later.Reliability,validity,feasibility,responsiveness and average time required for completing the questionnaire were assessed.Results A total of 195 patients participated in the study.The Chinese questionnaire showed high reliability with Cronbach’sαcoefficients of 0.849-0.902 for the LYMQOL-ARM and intraclass correlation coefficient(ICC)of 0.848-0.884 and Cronbach’sαcoefficients of 0.726-0.902 for the LYMQOL-LEG and ICC of 0.863-0.900.The LYMQOL showed moderate to good correlations with the EQ-5 D(0.4<r<0.6,P<0.01;for the LYMQOLARM,n=95,for the LYMQOL-LEG,n=102).Responsiveness analysis suggested that quality of life of upper limb lymphedema patients decreased after 1 month(P<0.05).The average time of patients to finish the questionnaire was approximately 12 minutes.Conclusions The Chinese version of the LYMQOL is easy to answer,comprehensive and appropriate in length,and has good reliability and validity.It may be utilized to assist treatment decision-making and track changes in clinical setting or research for lymphedema.展开更多
A digital predistorted class-F power amplifier (PA) using Cree GaN HEMT CGH40010 operating at 2. 12 GHz is presented to obtain high efficiency and excellent linearity for wideband code-division multiple access ( WC...A digital predistorted class-F power amplifier (PA) using Cree GaN HEMT CGH40010 operating at 2. 12 GHz is presented to obtain high efficiency and excellent linearity for wideband code-division multiple access ( WCDMA ) applications. Measurement results with the continuous wave (CW) signals indicate that the designed class-F PA achieves a peak power-added efficiency (PAE) of 75. 2% with an output power of 39.4 dBm. The adjacent channel power ratio (ACPR) of the designed PA after digital predistortion (DPD) decreases from -28. 3 and -27. 5 dBc to -51.9 and -54. 0 dBc, respectively, for a 4-carrier 20 MHz WCDMA signal with 7. 1 dB peak to average power ratio (PAPR). The drain efficiency (DE) of the PA is 37. 8% at an average output power of 33. 3 dBm. The designed power amplifier can be aoolied in the WCDMA system.展开更多
We propose a novel method for seismic noise attenuation by applying nonstationary polynomial fitting (NPF), which can estimate coherent components with amplitude variation along the event. The NPF with time-varying ...We propose a novel method for seismic noise attenuation by applying nonstationary polynomial fitting (NPF), which can estimate coherent components with amplitude variation along the event. The NPF with time-varying coefficients can adaptively estimate the coherent components. The smoothness of the polynomial coefficients is controlled by shaping regularization. The signal is coherent along the offset axis in a common midpoint (CMP) gather after normal moveout (NMO). We use NPF to estimate the effective signal and thereby to attenuate the random noise. For radial events-like noise such as ground roll, we first employ a radial trace (RT) transform to transform the data to the time-velocity domain. Then the NPF is used to estimate coherent noise in the RT domain. Finally, the coherent noise is adaptively subtracted from the noisy dataset. The proposed method can effectively estimate coherent noise with amplitude variations along the event and there is no need to propose that noise amplitude is constant. Results of synthetic and field data examples show that, compared with conventional methods such as stationary polynomial fitting and low cut filters, the proposed method can effectively suppress seismic noise and preserve the signals.展开更多
Objectives:Many studies concerning the roles and functions of school nurses exist,however,such studies are very limited in Turkey and there is any research on a comprehensive measuring tool that can evaluate teachers&...Objectives:Many studies concerning the roles and functions of school nurses exist,however,such studies are very limited in Turkey and there is any research on a comprehensive measuring tool that can evaluate teachers'and parents'perceptions and expectations of school nurses roles.The purpose of this study is to develop a valid and reliable assessment tool that can be used to determine parents'and teachers'expectations of school nurse's roles.Methods:For the methodological research"Parents'and Teachers'Expectations of School Nurse's Roles"scale was designed and administered at primary and high schools in Turkey.To assess the data,assessment of item variability,internal consistency,factor analysis,correlations between the scale and subscales,and test-retest reliability were utilized.Results:The content validity index for the scale was 0.94.As a result of core components analysis varimax rotation,7 factors were obtained from 54 items.Cronbach'sαcoefficient for the factors ranged from 0.82 to 0.92.The intra-class correlation coefficient for the test-retest reliability was 0.859,P<0.001.Conclusions:The scale was a rather valid and reliable assessment tool in determining the parents'and teachers'expectations of school nurses'roles.展开更多
文摘目的探索中文版癌症自我管理效能量表(strategies used by people to promote health,SUPPH)在肺癌人群中的信、效度研究。方法采用便利抽样法选择上海市5所三级医院的254名肺癌患者进行问卷调查,通过探索性因子分析对254份问卷进行分析,评价中文版癌症自我管理效能量表在肺癌人群中的信、效度。结果中文版癌症自我管理效能量表28个条目,得到3因子结构,累计方差贡献率为71.526%,Cronbachα系数为0.864~0.973。结论中文版癌症自我管理效能量表具有良好的信、效度,适合中国文化背景下肺癌人群自我管理效能的测量。
基金The Humanities and Social Sciences Project granted from the Ministry of Education in China(No.10YJA740061,11YJA740121)the Teaching Reform Key Project under Educational Section of Jiangsu Province(No.2011JSJG453)+3 种基金Southeast University Teaching Reform Project for Graduates(No.2010-54)Southeast University Teaching Reform Project for Post-Graduates(No.KJGKT12-06)the Natural Science Foundation of Jiangsu Province(No.BK2008354)the National Natural Science Foundation of China(No.6550181821,60975017)
文摘This paper discusses the approach to the CET (college English test) oral test based on automatic essay marking (AEM). The reliability and validity arouses a dispute on Internet-based CET (iB-CET) oral test in China, leading to the penetration into oral test contents in dialogue, description or comment, and question answering. Then, a probe into transformation from a spoken document into a textual document is touched on a conversion ratio of 72% adopted at the present time, AEM to be carried forward being a necessary hypothesis for Afterwards, this paper focuses on the pipeline in AEM with the content features and the language itself, which is established in two different models in marking for extraction and detection. Through experiments, this paper reveals the fact that an iB-CET oral test can be performed perfectly in the pipeline of spoken documents transformed into textual documents which can be automatically marked. Hence the design of the iB-CET oral test reaches its reliability and validity.
基金The National Natural Science Foundation of China(No.61571111)the National High Technology Research and Development Program of China(863 Program)(No.2014AA01A703,2015AA01A706)the Fundamental Research Funds for the Central Universities of China(No.2242016K40098)
文摘The performance of the graph-based scheduling for device-to-device communications overlaying cellular networks is studied. The graph-based scheduling consists of two stages, the frequency assignment stage and the time slot scheduling stage. For such scheduling, a theoretical method to analyze the average spectrum efficiency of the D2D subsystem is proposed. The method consists of three steps. First, the frequency assignment stage is analyzed and the approximate formula of the average number of the D2D links which are assigned the same frequency is derived. Secondly, the time slot scheduling stage is analyzed and the approximate formula of the average probability of a D2D link being scheduled in a time slot is derived. Thirdly, the average spectrum efficiency of the D2D subsystem is analyzed and the corresponding approximate formula is derived. Analysis results show that the average spectrum efficiency of the D2D subsystem is approximately inversely linearly proportional to the second- order origin moment of the normalized broadcast radius of D2D links. Simulation results show that the proposed method can correctly predict the average spectrum efficiency of the D2D subsystem.
基金This study was funded by the Medical Scientific Research Foundation of Guangdong Province,China(No.C2019046)the Guangdong Health Economics Association(No.2020-WJMZ-23).
文摘Objectives:This study aimed to develop and validate the Nurse’sWorkplace Mental Health Questionnaire(NWMHQ).Methods:The questionnaire was developed based on the two continua model of mental illness and health proposed by Keyes.The initial questionnaire was generated through literature review,two rounds of Delphi expert consultation,followed by a pilot survey.Finally,the reliability and validity of the questionnaire were validated through an online survey of 2,815 registered nurses selected from the public hospitals in 11 provinces from June to July 2020.Results:The item-content validity index(I-CVI)of the questionnaire ranged from 0.750 to 1.000 and the average scale-level content validity index(S-CVI/Ave)was 0.906.Cronbach’s a coefficient was 0.948 and test-retest reliability was 0.850.The self-rating depression scale score was negatively related to the NWMHQ score(r=0.664,P<0.01).The exploratory factor analysis(EFA)yielded six factors(emotional status,psychological security,positive relationship,resilience,self-efficacy,and subjective well-being),consisting of 32 items.The cumulative variance contribution rate was 65.58%.Confirmatory factor analysis(CFA)showed an acceptable fit.Conclusion:The NWMHQ developed in this study showed good reliability and validity.This questionnaire may help assess the mental health status of nurses and help nursing managers to develop appropriate targeted psychological interventions.
文摘Objectives:This study aimed to develop a self-management behavior questionnaire for Chinese enter-ostomy patients and examine its reliability and validity.Methods:Guided by the theory of self-management,an initial questionnaire was generated through literature review,group meetings,and two rounds of an expert consultation.Finally,the reliability and validity of the questionnaire were validated through a questionnaire survey of 200 enterostomy patients were selected from the Affiliated Hospital of Medical University from June 2016 to March 2017.Results:The content validity index was 0.80e1.00.The exploratory factor analysis yielded a five-factor(dietary behavior,psychosocial behavior,symptom management behavior,medical compliance behavior,information management behavior),consisting of 40 items.The cumulative variance contri-bution rate was 65.42%.The Cronbach’s a coefficient for the total questionnaire was 0.972,and for the five factors ranged from 0.797 to 0.939,indicating a good internal consistency.The test-retest reliability was 0.867(P<0.01).The self-management behavior questionnaire score was negatively related to the Ostomy Skin Tool score(r=-0.800,P<0.01).Conclusions:The self-management behavior questionnaire developed in this study showed good reli-ability and validity and can be used to assess the self-management behavior of Chinese enterostomy patients.
基金This research was supported by Beijing University of Chinese Medicine [2020-JYB-ZDGG-081].
文摘Objectives:This study aimed to assess the reliability and validity of the Chinese version of the Head and Neck Information Needs Questionnaire(HaNiQ).Methods:The HaNiQ was translated into a Chinese version using internationally recognized forwardand back-translation procedures.The reliability and validity of the HaNiQ were measured using Cronbach’s a coefficient,split-half reliability,exploratory factor analysis,and Pearson correlation analysis.Results:A total of 207 patients in different head and neck cancer(HNC)stages and 174 caregivers completed the Chinese version of the HaNiQ.Internal consistencies varied between good and very well(Cronbach’s α coefficient 0.74-0.90);the split-half coefficient and the content validity index(CVI)of the questionnaire were 83.5%and 83.33%,respectively.The cumulative contribution rates of the 5 subscales in patients with HNCand their caregivers were 62.41%and 61.19%,respectively.However,there are some differences between the Chinese questionnaire for caregiver and the original questionnaire regarding the attribution of items.Items 22,23,and 27 in the Psychosocial subscale of the English version were assigned to the Survivorship subscale in the Chinese version for caregivers.Conclusions:The results demonstrated that the Chinese version of the HaNiQ is a reliable and valid instrument for measuring the information needs of patients with HNC and that of their caregivers.Though the structure of the Chinese versionwas different from the English version for caregivers of HNC patients,the Chinese version of the HaNiQ appears to be reliable and would benefit from further testing.
文摘Objectives:Death fear is the main subject in thanatology.Several researchers have defined different reasons for fear of death.This study aimed to explore the performance of the Farsi version of the Reasons for Death Fear Scale(RDFS)among a convenience sample of Iranian nurses(n=106).Methods:The nurses were selected by the convenience sampling method and were asked to complete the RDFS,Death Concern Scale,Collett-Lester Fear of Death Scale,Death Anxiety Scale,Death Depression Scale,and Death Obsession Scale.Results:For the RDFS,the Cronbach's a coefficient was 0.90,and the 2-week test-retest reliability was 0.64.The RDFS was correlated at 0.34,0.39,0.50,0.35,and 0.39 to the above-mentioned five scales,indicating its good construct and criterion-related validity.Based on the exploratory factor analysis,the RDFS-identified four factors accounted for 66.20%of the variance and were labeled as"Fear of Pain and Punishment,""Fear of Losing Worldly Involvements,""Religious Transgressions and Failures,"and"Parting from Loved Ones."Conclusions:The RDFS presents good validity and reliability and can be used in clinical and research settings in Iran.
文摘Objective:Parents of children diagnosed with cancer often experience high levels of illness uncertainty.This study evaluated the psychometric properties of the Chinese Version of the Parent Perception of Uncertainty Scale for Childhood Cancer(PPUS-CC)in China's Mainland.Methods:Exploratory factor analysis(EFA)and confirmatory factor analysis(CFA)were performed using study population of 420 parents.The participants were also given the social support questionnaire and assessed using the Self-Rating Anxiety Scale,Zarit Burden Interview,and Self-Rating Depression Scale to test the association with PPUS-CC and obtain the cut-off of the scale.Results:The Chinese version of PPUS-CC includes 14 items,and two factors were extracted by EFA,which could explain the 54.56%variances.The Cronbach'sαof two factors ranged from 0.830 to 0.877.The dimensions of PPUS-CC show statistical association with other scales,and the cut-off is 42.5.Conclusion:The Chinese version of PPUS-CC,as a reliable,valid,and easy-to-use clinical tool,can be adapted in clinical settings as a screening tool to recognize parents with high-risk psychological problems.
基金The authors are grateful for financial support from the China Medical Board(NO.10-020-201211)
文摘Objective:This paper aims to determine the reliability and validity of the Chinese version of a tool that assesses the quality of life in idiopathic pulmonary fibrosis(cATAQ-IPF)in patients with interstitial lung disease(ILD).Methods:We used the process of scale introduction to establish cATAQ-IPF.The content validity of the scale was evaluated by six experts.A total of 92 patients with ILD completed the cATAQ-IPF,St.George's respiratory questionnaire(SGRQ),and The Medical Research Council dyspnoea scale at the baseline,and 15 patients completed cATAQ-IPF at the follow-up period 2 weeks later.Thus,yielding data were used to assess various psychometric properties of cATAQ-IPE Intraclass correlation coefficient(ICC),Cronbach'sαcoefficient,content validity index(CVI),item-level CVI(I-CVI),Pearson's coefficients,criterion-relation validity,and known-group validity were used for data analysis.Results:The cATAQ-IPF showed excellent test-retest reliability(ICC=0.95),except for the therapy domain(Cronbach'sα=0.60)and acceptable internal consistency(Cronbach'sα=0.96 for the total).The scale-level CVI was 0.80,and the I-CVI was in the range of 0.78-1.00.The total cATAQ-IPF score was strongly correlated with the SGRQ total score(r=0.71,P<0.01).The cATAQ-IPF score of patients with ILD was 250.74±47.39,and that of patients with IPF was 287.90±22.56.Patients with IPF possessed considerable impairments in health-related quality of life according to the cATAQ-IPF score(t=4.94,P<0.01).Conclusions:The cATAQ-IPF is a reliable and valid instrument for the evaluation of quality of life of Chinese patients with various forms of ILD.
文摘Objective To study the reliability and validity of the Chinese version of the Lymphedema Quality of Life Questionnaire(LYMQOL)in lymphedema patients.Methods LYMQOL was translated into Chinese.The Chinese version of the LYMQOL was distributed with the official Wechat account"Lymphedema Channel"to lymphedema patients who were recruited from October 28^(th),2020 to February 23^(rd),2021.Patients with upper limb lymphedema and lower limb lymphedema completed the LYMQOL-ARM subscale and the LYMQOL-LEG subscale separately,at enrollment,1 week later,and 1 month later.Reliability,validity,feasibility,responsiveness and average time required for completing the questionnaire were assessed.Results A total of 195 patients participated in the study.The Chinese questionnaire showed high reliability with Cronbach’sαcoefficients of 0.849-0.902 for the LYMQOL-ARM and intraclass correlation coefficient(ICC)of 0.848-0.884 and Cronbach’sαcoefficients of 0.726-0.902 for the LYMQOL-LEG and ICC of 0.863-0.900.The LYMQOL showed moderate to good correlations with the EQ-5 D(0.4<r<0.6,P<0.01;for the LYMQOLARM,n=95,for the LYMQOL-LEG,n=102).Responsiveness analysis suggested that quality of life of upper limb lymphedema patients decreased after 1 month(P<0.05).The average time of patients to finish the questionnaire was approximately 12 minutes.Conclusions The Chinese version of the LYMQOL is easy to answer,comprehensive and appropriate in length,and has good reliability and validity.It may be utilized to assist treatment decision-making and track changes in clinical setting or research for lymphedema.
基金The National Natural Science Foundation of China(No.60702163)the National Science and Technology Major Project(No.2010ZX03007-002-01,2011ZX03004-003)
文摘A digital predistorted class-F power amplifier (PA) using Cree GaN HEMT CGH40010 operating at 2. 12 GHz is presented to obtain high efficiency and excellent linearity for wideband code-division multiple access ( WCDMA ) applications. Measurement results with the continuous wave (CW) signals indicate that the designed class-F PA achieves a peak power-added efficiency (PAE) of 75. 2% with an output power of 39.4 dBm. The adjacent channel power ratio (ACPR) of the designed PA after digital predistortion (DPD) decreases from -28. 3 and -27. 5 dBc to -51.9 and -54. 0 dBc, respectively, for a 4-carrier 20 MHz WCDMA signal with 7. 1 dB peak to average power ratio (PAPR). The drain efficiency (DE) of the PA is 37. 8% at an average output power of 33. 3 dBm. The designed power amplifier can be aoolied in the WCDMA system.
基金supported by the National Basic Research Program of China (973 program, grant 2007CB209606) the National High Technology Research and Development Program of China (863 program, grant 2006AA09A102-09)
文摘We propose a novel method for seismic noise attenuation by applying nonstationary polynomial fitting (NPF), which can estimate coherent components with amplitude variation along the event. The NPF with time-varying coefficients can adaptively estimate the coherent components. The smoothness of the polynomial coefficients is controlled by shaping regularization. The signal is coherent along the offset axis in a common midpoint (CMP) gather after normal moveout (NMO). We use NPF to estimate the effective signal and thereby to attenuate the random noise. For radial events-like noise such as ground roll, we first employ a radial trace (RT) transform to transform the data to the time-velocity domain. Then the NPF is used to estimate coherent noise in the RT domain. Finally, the coherent noise is adaptively subtracted from the noisy dataset. The proposed method can effectively estimate coherent noise with amplitude variations along the event and there is no need to propose that noise amplitude is constant. Results of synthetic and field data examples show that, compared with conventional methods such as stationary polynomial fitting and low cut filters, the proposed method can effectively suppress seismic noise and preserve the signals.
文摘Objectives:Many studies concerning the roles and functions of school nurses exist,however,such studies are very limited in Turkey and there is any research on a comprehensive measuring tool that can evaluate teachers'and parents'perceptions and expectations of school nurses roles.The purpose of this study is to develop a valid and reliable assessment tool that can be used to determine parents'and teachers'expectations of school nurse's roles.Methods:For the methodological research"Parents'and Teachers'Expectations of School Nurse's Roles"scale was designed and administered at primary and high schools in Turkey.To assess the data,assessment of item variability,internal consistency,factor analysis,correlations between the scale and subscales,and test-retest reliability were utilized.Results:The content validity index for the scale was 0.94.As a result of core components analysis varimax rotation,7 factors were obtained from 54 items.Cronbach'sαcoefficient for the factors ranged from 0.82 to 0.92.The intra-class correlation coefficient for the test-retest reliability was 0.859,P<0.001.Conclusions:The scale was a rather valid and reliable assessment tool in determining the parents'and teachers'expectations of school nurses'roles.