In this paper, a model of topology optimization with linear buckling constraints is established based on an independent and continuous mapping method to minimize the plate/shell structure weight. A composite exponenti...In this paper, a model of topology optimization with linear buckling constraints is established based on an independent and continuous mapping method to minimize the plate/shell structure weight. A composite exponential function（CEF） is selected as filtering functions for element weight, the element stiffness matrix and the element geometric stiffness matrix, which recognize the design variables, and to implement the changing process of design variables from“discrete” to “continuous” and back to “discrete”. The buckling constraints are approximated as explicit formulations based on the Taylor expansion and the filtering function. The optimization model is transformed to dual programming and solved by the dual sequence quadratic programming algorithm. Finally, three numerical examples with power function and CEF as filter function are analyzed and discussed to demonstrate the feasibility and efficiency of the proposed method.展开更多
There are high expectations for Mobile Health to transform health into a sustainable and prevention-based system. Unfortunately it has not reached its scale of adoption many had hoped for, due to the existence of adop...There are high expectations for Mobile Health to transform health into a sustainable and prevention-based system. Unfortunately it has not reached its scale of adoption many had hoped for, due to the existence of adoption barriers. More insight into these barriers fosters adoption of mHealth and the innovation it can bring to worldwide healthcare. This study investigates the main barriers in the adoption of mHealth, their underlying causes and their breakthrough possibilities. All the data are gathered from an international and multi-stakeholder point of view. First of all we tried to identify the main barriers by doing an international literature study. Second of all we asked Dutch mHealth Key Opinion Leaders (KOLs) to rank the barriers to importance. These KOLs were from different stakeholder groups;policy-makers, users and developers. At last we asked the KOLs in interviews for underlying causes and breakthrough opportunities of the barriers. Eventually twelve main adoption barriers emerged. According to literature and to the KOLs the most important barriers are “Integration and interoperability” and “Business case”. An underlying cause for the barrier “Integration and interoperability” might be the active closed power system of technology suppliers, which exists in the Netherlands. Furthermore there seems to be a difference in the importance of the barriers “Privacy and security” and “Conservative culture” when perceptions of Dutch KOLS and international literature are compared. Within the stakeholders-groups, the KOLs think differently about the importance of the barriers “Visionless development” and “Competing payment mechanism”. The Dutch healthcare insurers could take a more leading role in the fragmented landscape of mHealth in the Netherlands, by strategically funding new initiatives that use open standards and deliver better value for end-users. Other chances might lie in the international cooperation between countries to overcome certain barriers.展开更多
Just one month after adopting a snowy owl in Chengdu,capital of Sichuan Province,Chen Xiaowu from the neighboring municipality of Chongqing embarked on a special journey on April 2 to visit her adopted owl,affectionat...Just one month after adopting a snowy owl in Chengdu,capital of Sichuan Province,Chen Xiaowu from the neighboring municipality of Chongqing embarked on a special journey on April 2 to visit her adopted owl,affectionately named Dapanji,referring to the popular Chinese"big plate chicken"dish,at the Museum of Nature Exploration.展开更多
Identifying the factors influencing farmers’adoption of low-carbon technologies(FA)and understanding their impacts are essential for shaping effective agricultural policies amied at emission reduction and carbon sequ...Identifying the factors influencing farmers’adoption of low-carbon technologies(FA)and understanding their impacts are essential for shaping effective agricultural policies amied at emission reduction and carbon sequestration in China.This study employs a meta-analysis of 122 empirical studies,delves into 23 driving factors affecting FA and addresses the inconsistencies present in the existing literature.We systematically examine the effect size,source of heterogeneity,and time-accumulation effect of the driving factors on FA.We find that significant heterogeneity in the factors influencing FA,except for farming experience,sources of heterogeneity from the survey zone,methodology model,technological attributes,report source,financial support,and the sampling year.Additionally,age,farming experience,and adoption cost negatively correlate with FA.In contrast,educational level,health status,technical training,economic and welfare cognition,land contract,soil quality,terrain,information accessibility,demonstration,government promotion,government regulation,government support,agricultural cooperatives member,peer effect,and agricultural income ratio demonstrate a positive correlation.Especially,demonstration and age show a particularly strong correlation.Finally,the effect of demonstration,age,economic and welfare cognition,farming experience,land contract,soil quality,information accessibility,government promotion,and support,as well as agricultural cooperative membership and peer effects on FA,are generally stable but exhibit varying degrees of attenuation over time.The effect of village cadre,family income,farm scale,gender,health status,technical training,and off-farm work on FA show notable temporal shifts and maintain a weak correlation with FA.This study contributes to shaping China’s current low-carbon agriculture policies across various regions.It encourages policymakers to comprehensively consider the stability of key factors,other potential factors,technological attributes,rural socio-economic context,and their interrelations.展开更多
目的:探究ADOPT问题解决模式护理对大面积烧伤患者伤残接受度、创面愈合及美观满意度的影响。方法:前瞻性选择2020年1月-2022年12月笔者医院收治的患者460例大面积烧伤患者为研究对象,将2020年1月-2021年3月收治的患者纳入对照组,2021年...目的:探究ADOPT问题解决模式护理对大面积烧伤患者伤残接受度、创面愈合及美观满意度的影响。方法:前瞻性选择2020年1月-2022年12月笔者医院收治的患者460例大面积烧伤患者为研究对象,将2020年1月-2021年3月收治的患者纳入对照组,2021年4月-2022年12月收治的纳入观察组,对照组采用大面积烧伤后常规护理,观察组采用ADOPT问题解决模式护理,持续护理3个月。分别于干预前和干预3个月后,采用伤残接受度量表(Acceptance of disability scale,AODS)评估患者伤残接受度,采用视觉模拟评分(Visual analogue scale,VAS)评估患者创面疼痛程度,采用简明烧伤健康量表(Burn specific health scale,BSHS-A)评估患者生活质量;干预4周后,计算创面愈合率;干预3个月后,采用(Vancouver scar scale,VSS)评估患者创面愈合后瘢痕增生情况,采用美观满意度评分表评估患者美观满意度;记录创面愈合时间。结果:干预后,观察组患者AODS评分、创面覆盖率、美观满意度、BSHS-A评分均明显高于对照组,创面愈合时间明显短于对照组,VAS评分和VSS评分明显低于对照组(P<0.05)。结论:ADOPT问题解决模式能够提高大面积烧伤患者伤残接受度和美观满意度,有利于创面愈合,患者生活质量也得以显著提高。展开更多
目的分析ADOPT[态度(attitude,A)、定义(definition,D)、开放思维(open mind,O)、计划(planning,P)、实施(try it out,T)]模式在妊娠期糖尿病产妇中的应用效果。方法以南通大学附属妇幼保健院于2022年1月至2023年2月收治的120例妊娠期...目的分析ADOPT[态度(attitude,A)、定义(definition,D)、开放思维(open mind,O)、计划(planning,P)、实施(try it out,T)]模式在妊娠期糖尿病产妇中的应用效果。方法以南通大学附属妇幼保健院于2022年1月至2023年2月收治的120例妊娠期糖尿病产妇为研究对象,根据入院顺序将其分为对照组与观察组,每组60例,其中对照组产妇年龄24~35岁[(28.35±5.06)岁],观察组产妇年龄23~36岁[(28.29±5.33)岁],对照组实行常规护理,观察组实行ADOPT模式。比较2组产妇干预前与干预7 d时的心理弹性量表评分、糖尿病自我效能量表评分以及血糖水平,并对比2组产妇不良妊娠结局发生率。结果干预前,2组产妇的心理弹性量表评分、糖尿病自我效能量表评分及血糖水平差异无统计学意义(P>0.05),干预7 d时,观察组产妇心理弹性量表评分、糖尿病自我效能量表评分均高于对照组,且观察组产妇的空腹血糖、餐后2 h血糖水平均低于对照组(P<0.05)。干预后,观察组产妇(6.67%)、新生儿(5.00%)的不良妊娠结局发生率均低于对照组产妇(20.00%)、新生儿(16.67%),差异有统计学意义(P<0.05)。结论ADOPT模式能够改善妊娠期糖尿病产妇的心理弹性,强化自我效能,有效控制其血糖水平,同时降低不良妊娠结局发生率。展开更多
目的探讨基于ADOPT问题解决模式的护理干预结合饮食疗法对糖尿病合并前列腺增生术后患者饮食行为及康复情况的影响。方法选取2020年3月至2022年4月收治的86例糖尿病合并前列腺增生术后患者为研究对象,以随机数字表法将其分为对照组与观...目的探讨基于ADOPT问题解决模式的护理干预结合饮食疗法对糖尿病合并前列腺增生术后患者饮食行为及康复情况的影响。方法选取2020年3月至2022年4月收治的86例糖尿病合并前列腺增生术后患者为研究对象,以随机数字表法将其分为对照组与观察组,各43例。对照组采用常规护理干预,观察组在对照组基础上给予基于ADOPT问题解决模式的护理干预结合饮食疗法。比较两组的干预效果。结果干预后,观察组的遵医饮食行为、日常饮食管理行为、饮食依从性态度评分高于对照组(P<0.05)。干预后,观察组的空腹血糖(FBG)、餐后2 h血糖(2 h PG)、CD68、碱性成纤维细胞生长因子(bFGF)水平低于对照组(P<0.05)。观察组的术后并发症总发生率低于对照组(P<0.05)。结论基于ADOPT问题解决模式的护理干预联合饮食疗法不仅能够改善糖尿病合并前列腺增生术后患者的饮食行为,还能促进机体康复,减少术后并发症发生风险,值得推广。展开更多
For accuracy and rapidity of audio event detection in the mass-data audio pro- cessing tasks, a generic method of rapidly recognizing audio event based on 2D-Haar acoustic super feature vector and AdaBoost is proposed...For accuracy and rapidity of audio event detection in the mass-data audio pro- cessing tasks, a generic method of rapidly recognizing audio event based on 2D-Haar acoustic super feature vector and AdaBoost is proposed. Firstly, it combines certain number of con- tinuous audio frames to be an ＂acoustic feature image＂, secondly, uses AdaBoost.MH or fast Random AdaBoost feature selection algorithm to select high representative 2D-Haar pattern combinations to construct super feature vectors; thirdly, analyzes the commonality and differ- ences between subcategories, then extracts common features and reduces different features to obtain a generic audio event template, which can support the accurate identification of multi- ple sub-classes and detect and locate the specific audio event from the audio stream accurately. Experimental results show that the use of 2D-Haar acoustic feature super vector can make recog- nition accuracy 5% higher than ones that MFCC, PLP, LPCC and other traditional acoustic features yielded, and can make tile training processing 7 20 times faster and the recognition processing 5-10 times faster, it can even achieve an average precision of 93.38%, an average recall of 95.03% under the optimal parameter configuration found by grid method. Above all, it can provide an accurate and fast mass-data processing method for audio event detection.展开更多
基金supported by the National Natural Science Foundation of China(Grants 11072009,111720131)
文摘In this paper, a model of topology optimization with linear buckling constraints is established based on an independent and continuous mapping method to minimize the plate/shell structure weight. A composite exponential function（CEF） is selected as filtering functions for element weight, the element stiffness matrix and the element geometric stiffness matrix, which recognize the design variables, and to implement the changing process of design variables from“discrete” to “continuous” and back to “discrete”. The buckling constraints are approximated as explicit formulations based on the Taylor expansion and the filtering function. The optimization model is transformed to dual programming and solved by the dual sequence quadratic programming algorithm. Finally, three numerical examples with power function and CEF as filter function are analyzed and discussed to demonstrate the feasibility and efficiency of the proposed method.
文摘There are high expectations for Mobile Health to transform health into a sustainable and prevention-based system. Unfortunately it has not reached its scale of adoption many had hoped for, due to the existence of adoption barriers. More insight into these barriers fosters adoption of mHealth and the innovation it can bring to worldwide healthcare. This study investigates the main barriers in the adoption of mHealth, their underlying causes and their breakthrough possibilities. All the data are gathered from an international and multi-stakeholder point of view. First of all we tried to identify the main barriers by doing an international literature study. Second of all we asked Dutch mHealth Key Opinion Leaders (KOLs) to rank the barriers to importance. These KOLs were from different stakeholder groups;policy-makers, users and developers. At last we asked the KOLs in interviews for underlying causes and breakthrough opportunities of the barriers. Eventually twelve main adoption barriers emerged. According to literature and to the KOLs the most important barriers are “Integration and interoperability” and “Business case”. An underlying cause for the barrier “Integration and interoperability” might be the active closed power system of technology suppliers, which exists in the Netherlands. Furthermore there seems to be a difference in the importance of the barriers “Privacy and security” and “Conservative culture” when perceptions of Dutch KOLS and international literature are compared. Within the stakeholders-groups, the KOLs think differently about the importance of the barriers “Visionless development” and “Competing payment mechanism”. The Dutch healthcare insurers could take a more leading role in the fragmented landscape of mHealth in the Netherlands, by strategically funding new initiatives that use open standards and deliver better value for end-users. Other chances might lie in the international cooperation between countries to overcome certain barriers.
文摘Just one month after adopting a snowy owl in Chengdu,capital of Sichuan Province,Chen Xiaowu from the neighboring municipality of Chongqing embarked on a special journey on April 2 to visit her adopted owl,affectionately named Dapanji,referring to the popular Chinese"big plate chicken"dish,at the Museum of Nature Exploration.
基金supported by the National Social Science Fund of China(19BGL152)the Sichuan Technology Planning Project,China(2022JDTD0022)the Provincial College Student Innovation and Entrepreneurship Training Program of Sichuan Province,China(S202310626018).
文摘Identifying the factors influencing farmers’adoption of low-carbon technologies(FA)and understanding their impacts are essential for shaping effective agricultural policies amied at emission reduction and carbon sequestration in China.This study employs a meta-analysis of 122 empirical studies,delves into 23 driving factors affecting FA and addresses the inconsistencies present in the existing literature.We systematically examine the effect size,source of heterogeneity,and time-accumulation effect of the driving factors on FA.We find that significant heterogeneity in the factors influencing FA,except for farming experience,sources of heterogeneity from the survey zone,methodology model,technological attributes,report source,financial support,and the sampling year.Additionally,age,farming experience,and adoption cost negatively correlate with FA.In contrast,educational level,health status,technical training,economic and welfare cognition,land contract,soil quality,terrain,information accessibility,demonstration,government promotion,government regulation,government support,agricultural cooperatives member,peer effect,and agricultural income ratio demonstrate a positive correlation.Especially,demonstration and age show a particularly strong correlation.Finally,the effect of demonstration,age,economic and welfare cognition,farming experience,land contract,soil quality,information accessibility,government promotion,and support,as well as agricultural cooperative membership and peer effects on FA,are generally stable but exhibit varying degrees of attenuation over time.The effect of village cadre,family income,farm scale,gender,health status,technical training,and off-farm work on FA show notable temporal shifts and maintain a weak correlation with FA.This study contributes to shaping China’s current low-carbon agriculture policies across various regions.It encourages policymakers to comprehensively consider the stability of key factors,other potential factors,technological attributes,rural socio-economic context,and their interrelations.
文摘目的:探究ADOPT问题解决模式护理对大面积烧伤患者伤残接受度、创面愈合及美观满意度的影响。方法:前瞻性选择2020年1月-2022年12月笔者医院收治的患者460例大面积烧伤患者为研究对象,将2020年1月-2021年3月收治的患者纳入对照组,2021年4月-2022年12月收治的纳入观察组,对照组采用大面积烧伤后常规护理,观察组采用ADOPT问题解决模式护理,持续护理3个月。分别于干预前和干预3个月后,采用伤残接受度量表(Acceptance of disability scale,AODS)评估患者伤残接受度,采用视觉模拟评分(Visual analogue scale,VAS)评估患者创面疼痛程度,采用简明烧伤健康量表(Burn specific health scale,BSHS-A)评估患者生活质量;干预4周后,计算创面愈合率;干预3个月后,采用(Vancouver scar scale,VSS)评估患者创面愈合后瘢痕增生情况,采用美观满意度评分表评估患者美观满意度;记录创面愈合时间。结果:干预后,观察组患者AODS评分、创面覆盖率、美观满意度、BSHS-A评分均明显高于对照组,创面愈合时间明显短于对照组,VAS评分和VSS评分明显低于对照组(P<0.05)。结论:ADOPT问题解决模式能够提高大面积烧伤患者伤残接受度和美观满意度,有利于创面愈合,患者生活质量也得以显著提高。
文摘目的探讨基于ADOPT问题解决模式的护理干预结合饮食疗法对糖尿病合并前列腺增生术后患者饮食行为及康复情况的影响。方法选取2020年3月至2022年4月收治的86例糖尿病合并前列腺增生术后患者为研究对象,以随机数字表法将其分为对照组与观察组,各43例。对照组采用常规护理干预,观察组在对照组基础上给予基于ADOPT问题解决模式的护理干预结合饮食疗法。比较两组的干预效果。结果干预后,观察组的遵医饮食行为、日常饮食管理行为、饮食依从性态度评分高于对照组(P<0.05)。干预后,观察组的空腹血糖(FBG)、餐后2 h血糖(2 h PG)、CD68、碱性成纤维细胞生长因子(bFGF)水平低于对照组(P<0.05)。观察组的术后并发症总发生率低于对照组(P<0.05)。结论基于ADOPT问题解决模式的护理干预联合饮食疗法不仅能够改善糖尿病合并前列腺增生术后患者的饮食行为,还能促进机体康复,减少术后并发症发生风险,值得推广。
文摘For accuracy and rapidity of audio event detection in the mass-data audio pro- cessing tasks, a generic method of rapidly recognizing audio event based on 2D-Haar acoustic super feature vector and AdaBoost is proposed. Firstly, it combines certain number of con- tinuous audio frames to be an ＂acoustic feature image＂, secondly, uses AdaBoost.MH or fast Random AdaBoost feature selection algorithm to select high representative 2D-Haar pattern combinations to construct super feature vectors; thirdly, analyzes the commonality and differ- ences between subcategories, then extracts common features and reduces different features to obtain a generic audio event template, which can support the accurate identification of multi- ple sub-classes and detect and locate the specific audio event from the audio stream accurately. Experimental results show that the use of 2D-Haar acoustic feature super vector can make recog- nition accuracy 5% higher than ones that MFCC, PLP, LPCC and other traditional acoustic features yielded, and can make tile training processing 7 20 times faster and the recognition processing 5-10 times faster, it can even achieve an average precision of 93.38%, an average recall of 95.03% under the optimal parameter configuration found by grid method. Above all, it can provide an accurate and fast mass-data processing method for audio event detection.
