Before joining the Beijing Dragon Shadow Puppetry Art Theatre,this group of young people rarely had the chance to meet people like themselves,lacked friends,faced obstacles at work,and felt alienated from society.Now,...Before joining the Beijing Dragon Shadow Puppetry Art Theatre,this group of young people rarely had the chance to meet people like themselves,lacked friends,faced obstacles at work,and felt alienated from society.Now,they have gained appreciation,recognition,confidence,friendships,and love.展开更多
As the global economy navigates through a complex landscape of uncertainty and shifting dynamics,the Chinese economy stands out for its remarkable resilience,inherent vitality,and steadfast commitment to a transformat...As the global economy navigates through a complex landscape of uncertainty and shifting dynamics,the Chinese economy stands out for its remarkable resilience,inherent vitality,and steadfast commitment to a transformative,high-quality development path.The latest economic indicators,strategic policy guidance from the Central Economic Work Conference,and a surge in international confidence collectively present a picture of an economy not merely recovering,but actively building its new growth engines.China is transitioning towards a more sustainable and innovation-driven model,with new quality productive forces playing an increasingly prominent role.展开更多
China Standardization:What is your view on this year's International Standardization Youth Star Competition?Tom Heilandt:This is the first time I have attended this event,which was founded by my good friend Dr.Zha...China Standardization:What is your view on this year's International Standardization Youth Star Competition?Tom Heilandt:This is the first time I have attended this event,which was founded by my good friend Dr.Zhang Xiaogang,whom I first met in 2016 when he was President of ISO.It is an excellent initiative.I strongly believe that it is essential for young people to become involved in standardization.展开更多
Existing blockwise empirical likelihood(BEL)method blocks the observations or their analogues,which is proven useful under some dependent data settings.In this paper,we introduce a new BEL(NBEL)method by blocking the ...Existing blockwise empirical likelihood(BEL)method blocks the observations or their analogues,which is proven useful under some dependent data settings.In this paper,we introduce a new BEL(NBEL)method by blocking the scoring functions under high dimensional cases.We study the construction of confidence regions for the parameters in spatial autoregressive models with spatial autoregressive disturbances(SARAR models)with high dimension of parameters by using the NBEL method.It is shown that the NBEL ratio statistics are asymptoticallyχ^(2)-type distributed,which are used to obtain the NBEL based confidence regions for the parameters in SARAR models.A simulation study is conducted to compare the performances of the NBEL and the usual EL methods.展开更多
BACKGROUND Monkeypox(Mpox),is a disease of global public health concern,as it does not affect only countries in western and central Africa.AIM To assess Burundi healthcare workers(HCWs)s’level of knowledge and confid...BACKGROUND Monkeypox(Mpox),is a disease of global public health concern,as it does not affect only countries in western and central Africa.AIM To assess Burundi healthcare workers(HCWs)s’level of knowledge and confidence in the diagnosis and management of Mpox.METHODS We conducted a cross-sectional study via an online survey designed mainly from the World Health Organization course distributed among Burundi HCWs from June-July 2023.The questionnaire comprises 8 socioprofessional-related questions,22 questions about Mpox disease knowledge,and 3 questions to assess confidence in Mpox diagnosis and management.The data were analyzed via SPSS software version 25.0.A P value<0.05 was considered to indicate statistical significance.RESULTS The study sample comprised 471 HCWs who were mainly medical doctors(63.9%)and nurses(30.1%).None of the 22 questions concerning Mpox knowledge had at least 50%correct responses.A very low number of HCWs(17.4%)knew that Mpox has a vaccine.The confidence level to diagnose(21.20%),treat(18.00%)or prevent(23.30%)Mpox was low among HCWs.The confidence level in the diagnosis of Mpox was associated with the HCWs’age(P value=0.009),sex(P value<0.001),work experience(P value=0.002),and residence(P value<0.001).The confidence level to treat Mpox was significantly associated with the HCWs’age(P value=0.050),sex(P value<0.001),education(P value=0.033)and occupation(P value=0.005).The confidence level to prevent Mpox was associated with the HCWs’education(P value<0.001),work experience(P value=0.002),residence(P value<0.001)and type of work institution(P value=0.003).CONCLUSION This study revealed that HCWs have the lowest level of knowledge regarding Mpox and a lack of confidence in the ability to diagnose,treat or prevent it.There is an urgent need to organize continuing medical education programs on Mpox epidemiology and preparedness for Burundi HCWs.We encourage future researchers to assess potential hesitancy toward Mpox vaccination and its associated factors.展开更多
NEW quality productive forces were one of the most frequently mentioned keywords for China’s high-quality development in the past year.The annual Central Economic Work Conference(CEWC)in December that reviewed the ec...NEW quality productive forces were one of the most frequently mentioned keywords for China’s high-quality development in the past year.The annual Central Economic Work Conference(CEWC)in December that reviewed the economy in 2024 and gave directions for the economic work in 2025 called for balancing fostering new growth drivers and revitalizing old ones while developing new quality productive forces based on local conditions.展开更多
1 I Like Me follows a cheerful and confident little pig who celebrates everything about herself.From her curly tail to her big feet,she loves every part of herself.In the book,I remember that the pig enthusiastically ...1 I Like Me follows a cheerful and confident little pig who celebrates everything about herself.From her curly tail to her big feet,she loves every part of herself.In the book,I remember that the pig enthusiastically declares that no matter what she does,even if she's making mistakes,being silly or being a clumsy rookie(笨拙的新手)of trying something new,she will always like herself.展开更多
问题导读下课后,李华找到英语老师,带着疑惑问道:“老师,您上次给我的作文写的批注是‘Selfdoubt gnawed at my confidence.’这个句子中的动词过于夸张,并且‘The clock watched me struggle.’中的拟人手法运用不当。这中间的界限到...问题导读下课后,李华找到英语老师,带着疑惑问道:“老师,您上次给我的作文写的批注是‘Selfdoubt gnawed at my confidence.’这个句子中的动词过于夸张,并且‘The clock watched me struggle.’中的拟人手法运用不当。这中间的界限到底在哪里呢?在读后续写中,我该如何使用无灵主语,让语言更加生动、自然呢?”展开更多
In order to solve the problem of limited computational resources of multi-unmanned systems airborne navigation platform,a distributed cooperative positioning method based on confidence evaluation is proposed.Firstly,t...In order to solve the problem of limited computational resources of multi-unmanned systems airborne navigation platform,a distributed cooperative positioning method based on confidence evaluation is proposed.Firstly,the impact of ranging error,priori information,spatial geometric configuration and adjacent nodes count on cooperative positioning performance are analyzed individually.Secondly,a confidence evaluation method for measurement information of adjacent nodes is designed according to the cooperative positioning principle,which comprehensively considers the coupling relationship between influencing factors.Finally,a distributed cooperative navigation filter based on inter-vehicle ranging is designed.Simulation studies show that confidence evaluation method proposed in this paper can effectively characterize the contribution of measurement information to positioning results,and positioning accuracy under the proposed method is improved by more than 15%compared with the traditional screening methods based on optimal geometric configuration and closest distance.展开更多
BACKGROUND:In-flight medical emergencies(IMEs)present significant challenges to healthcare professionals,particularly those with limited training or experience in managing such situations.The objective of this study w...BACKGROUND:In-flight medical emergencies(IMEs)present significant challenges to healthcare professionals,particularly those with limited training or experience in managing such situations.The objective of this study was to evaluate the level of knowledge,attitudes,and behaviors of licensed doctors in Saudi Arabia concerning IMEs,and to identify the demographic factors influencing their preparedness.METHODS:A cross-sectional study was conducted with a sample of 383 licensed physicians across five regions of Saudi Arabia.Participants completed a self-administered questionnaire assessing demographics,knowledge of IMEs,attitudes towards providing assistance,and previous experience with in-flight emergencies.Data were analyzed using SPSS 26,with statistical significance set at P<0.05.RESULTS:The results revealed a predominantly young(75.8% aged 25-34 years)and male(69.6%)participant pool.While 76.6% of respondents recognized the impact of cabin pressure on oxygen,only 45.4% correctly identified air travel risks for asthmatic patients.Although 66.8% felt confident assisting in IMEs,20.9% cited medicolegal concerns.Moreover,area of working within Saudi Arabia(P=0.020),year of experience(P=0.041),prior experience with IMEs(P=0.021),and IMEs training(P<0.001)had a significant association with levels of knowledge.CONCLUSION:The study highlights a critical need for enhanced training programs with a focus on the management of IMEs among healthcare practitioners in Saudi Arabia.展开更多
In a video that has mesmerized audiences worldwide,a humanoid robot displays a magical move of self-defense,executing a flawless 720-degree spinning kick to knock out a baton held in a human hand.This is Chinese compa...In a video that has mesmerized audiences worldwide,a humanoid robot displays a magical move of self-defense,executing a flawless 720-degree spinning kick to knock out a baton held in a human hand.This is Chinese company Unitree Robotics’G1 robot,embodying the innovation that has propelled China forward as the world’s second largest economy.展开更多
Federated learning(FL)is an intricate and privacy-preserving technique that enables distributed mobile devices to collaboratively train a machine learning model.However,in real-world FL scenarios,the training performa...Federated learning(FL)is an intricate and privacy-preserving technique that enables distributed mobile devices to collaboratively train a machine learning model.However,in real-world FL scenarios,the training performance is affected by a combination of factors such as the mobility of user devices,limited communication and computational resources,thus making the user scheduling problem crucial.To tackle this problem,we jointly consider the user mobility,communication and computational capacities,and develop a stochastic optimization problem to minimize the convergence time.Specifically,we first establish a convergence bound on the training performance based on the heterogeneity of users’data,and then leverage this bound to derive the participation rate for each user.After deriving the user-specific participation rate,we aim to minimize the training latency by optimizing user scheduling under the constraints of the energy consumption and participation rate.Afterward,we transform this optimization problem to the contextual multi-armed bandit framework based on the Lyapunov method and solve it with the submodular reward enhanced linear upper confidence bound(SR-linUCB)algorithm.Experimental results demonstrate the superiority of our proposed algorithm on the training performance and time consumption compared with stateof-the-art algorithms for both independent and identically distributed(IID)and non-IID settings.展开更多
Chinese Journal of Integrative Nursing(CJIN)is dedicated to promoting the internationalization of Chinese science and technology journals through innovative practices.Its pioneering technology of Authorship Metadata i...Chinese Journal of Integrative Nursing(CJIN)is dedicated to promoting the internationalization of Chinese science and technology journals through innovative practices.Its pioneering technology of Authorship Metadata in Chinese,preserves authors'names in their native languages within global academic databases,demonstrating cultural confidence and enabling accurate tracking of academic achievements.By constructing an open science system,upgrading its technical platform,and ensuring the sustainable dis⁃semination of resources,CJIN is committed to establishing an international academic hub in the field of integrative nursing.It aims to build bridges for cultural exchange,and transmitting the accumulated wisdom of Traditional Chinese Medicine nursing.展开更多
China’s new law offers protections and incentives to private companies Business leaders in China have welcomed the enactment of the Private Sector Promotion Law,calling it a genuine confidence booster.
Critical for metering and protection in electric railway traction power supply systems(TPSSs),the measurement performance of voltage transformers(VTs)must be timely and reliably monitored.This paper outlines a three-s...Critical for metering and protection in electric railway traction power supply systems(TPSSs),the measurement performance of voltage transformers(VTs)must be timely and reliably monitored.This paper outlines a three-step,RMS data only method for evaluating VTs in TPSSs.First,a kernel principal component analysis approach is used to diagnose the VT exhibiting significant measurement deviations over time,mitigating the influence of stochastic fluctuations in traction loads.Second,a back propagation neural network is employed to continuously estimate the measurement deviations of the targeted VT.Third,a trend analysis method is developed to assess the evolution of the measurement performance of VTs.Case studies conducted on field data from an operational TPSS demonstrate the effectiveness of the proposed method in detecting VTs with measurement deviations exceeding 1%relative to their original accuracy levels.Additionally,the method accurately tracks deviation trends,enabling the identification of potential early-stage faults in VTs and helping prevent significant economic losses in TPSS operations.展开更多
文摘Before joining the Beijing Dragon Shadow Puppetry Art Theatre,this group of young people rarely had the chance to meet people like themselves,lacked friends,faced obstacles at work,and felt alienated from society.Now,they have gained appreciation,recognition,confidence,friendships,and love.
文摘As the global economy navigates through a complex landscape of uncertainty and shifting dynamics,the Chinese economy stands out for its remarkable resilience,inherent vitality,and steadfast commitment to a transformative,high-quality development path.The latest economic indicators,strategic policy guidance from the Central Economic Work Conference,and a surge in international confidence collectively present a picture of an economy not merely recovering,but actively building its new growth engines.China is transitioning towards a more sustainable and innovation-driven model,with new quality productive forces playing an increasingly prominent role.
文摘China Standardization:What is your view on this year's International Standardization Youth Star Competition?Tom Heilandt:This is the first time I have attended this event,which was founded by my good friend Dr.Zhang Xiaogang,whom I first met in 2016 when he was President of ISO.It is an excellent initiative.I strongly believe that it is essential for young people to become involved in standardization.
基金Supported by the National Natural Science Foundation of China(12061017,12361055)the Research Fund of Guangxi Key Lab of Multi-source Information Mining&Security(22-A-01-01)。
文摘Existing blockwise empirical likelihood(BEL)method blocks the observations or their analogues,which is proven useful under some dependent data settings.In this paper,we introduce a new BEL(NBEL)method by blocking the scoring functions under high dimensional cases.We study the construction of confidence regions for the parameters in spatial autoregressive models with spatial autoregressive disturbances(SARAR models)with high dimension of parameters by using the NBEL method.It is shown that the NBEL ratio statistics are asymptoticallyχ^(2)-type distributed,which are used to obtain the NBEL based confidence regions for the parameters in SARAR models.A simulation study is conducted to compare the performances of the NBEL and the usual EL methods.
文摘BACKGROUND Monkeypox(Mpox),is a disease of global public health concern,as it does not affect only countries in western and central Africa.AIM To assess Burundi healthcare workers(HCWs)s’level of knowledge and confidence in the diagnosis and management of Mpox.METHODS We conducted a cross-sectional study via an online survey designed mainly from the World Health Organization course distributed among Burundi HCWs from June-July 2023.The questionnaire comprises 8 socioprofessional-related questions,22 questions about Mpox disease knowledge,and 3 questions to assess confidence in Mpox diagnosis and management.The data were analyzed via SPSS software version 25.0.A P value<0.05 was considered to indicate statistical significance.RESULTS The study sample comprised 471 HCWs who were mainly medical doctors(63.9%)and nurses(30.1%).None of the 22 questions concerning Mpox knowledge had at least 50%correct responses.A very low number of HCWs(17.4%)knew that Mpox has a vaccine.The confidence level to diagnose(21.20%),treat(18.00%)or prevent(23.30%)Mpox was low among HCWs.The confidence level in the diagnosis of Mpox was associated with the HCWs’age(P value=0.009),sex(P value<0.001),work experience(P value=0.002),and residence(P value<0.001).The confidence level to treat Mpox was significantly associated with the HCWs’age(P value=0.050),sex(P value<0.001),education(P value=0.033)and occupation(P value=0.005).The confidence level to prevent Mpox was associated with the HCWs’education(P value<0.001),work experience(P value=0.002),residence(P value<0.001)and type of work institution(P value=0.003).CONCLUSION This study revealed that HCWs have the lowest level of knowledge regarding Mpox and a lack of confidence in the ability to diagnose,treat or prevent it.There is an urgent need to organize continuing medical education programs on Mpox epidemiology and preparedness for Burundi HCWs.We encourage future researchers to assess potential hesitancy toward Mpox vaccination and its associated factors.
文摘NEW quality productive forces were one of the most frequently mentioned keywords for China’s high-quality development in the past year.The annual Central Economic Work Conference(CEWC)in December that reviewed the economy in 2024 and gave directions for the economic work in 2025 called for balancing fostering new growth drivers and revitalizing old ones while developing new quality productive forces based on local conditions.
文摘1 I Like Me follows a cheerful and confident little pig who celebrates everything about herself.From her curly tail to her big feet,she loves every part of herself.In the book,I remember that the pig enthusiastically declares that no matter what she does,even if she's making mistakes,being silly or being a clumsy rookie(笨拙的新手)of trying something new,she will always like herself.
文摘问题导读下课后,李华找到英语老师,带着疑惑问道:“老师,您上次给我的作文写的批注是‘Selfdoubt gnawed at my confidence.’这个句子中的动词过于夸张,并且‘The clock watched me struggle.’中的拟人手法运用不当。这中间的界限到底在哪里呢?在读后续写中,我该如何使用无灵主语,让语言更加生动、自然呢?”
基金supported in part by National Natural Science Foundation of China(Nos.62073163,62103285,62203228)National Defense Basic Research Program(No.JCKY2020605C009)+1 种基金Aeronautic Science Foundation of China(Nos.ASFC-2020Z071052001,202055052003)Foundation Strengthening Program Technology 173 Field Fund(No.2021-JCJQ-JJ-0308)。
文摘In order to solve the problem of limited computational resources of multi-unmanned systems airborne navigation platform,a distributed cooperative positioning method based on confidence evaluation is proposed.Firstly,the impact of ranging error,priori information,spatial geometric configuration and adjacent nodes count on cooperative positioning performance are analyzed individually.Secondly,a confidence evaluation method for measurement information of adjacent nodes is designed according to the cooperative positioning principle,which comprehensively considers the coupling relationship between influencing factors.Finally,a distributed cooperative navigation filter based on inter-vehicle ranging is designed.Simulation studies show that confidence evaluation method proposed in this paper can effectively characterize the contribution of measurement information to positioning results,and positioning accuracy under the proposed method is improved by more than 15%compared with the traditional screening methods based on optimal geometric configuration and closest distance.
基金approved by the Regional Research Ethics Committee,Qassim Province,Saudi Arabia.Number(607-45-12634).
文摘BACKGROUND:In-flight medical emergencies(IMEs)present significant challenges to healthcare professionals,particularly those with limited training or experience in managing such situations.The objective of this study was to evaluate the level of knowledge,attitudes,and behaviors of licensed doctors in Saudi Arabia concerning IMEs,and to identify the demographic factors influencing their preparedness.METHODS:A cross-sectional study was conducted with a sample of 383 licensed physicians across five regions of Saudi Arabia.Participants completed a self-administered questionnaire assessing demographics,knowledge of IMEs,attitudes towards providing assistance,and previous experience with in-flight emergencies.Data were analyzed using SPSS 26,with statistical significance set at P<0.05.RESULTS:The results revealed a predominantly young(75.8% aged 25-34 years)and male(69.6%)participant pool.While 76.6% of respondents recognized the impact of cabin pressure on oxygen,only 45.4% correctly identified air travel risks for asthmatic patients.Although 66.8% felt confident assisting in IMEs,20.9% cited medicolegal concerns.Moreover,area of working within Saudi Arabia(P=0.020),year of experience(P=0.041),prior experience with IMEs(P=0.021),and IMEs training(P<0.001)had a significant association with levels of knowledge.CONCLUSION:The study highlights a critical need for enhanced training programs with a focus on the management of IMEs among healthcare practitioners in Saudi Arabia.
文摘In a video that has mesmerized audiences worldwide,a humanoid robot displays a magical move of self-defense,executing a flawless 720-degree spinning kick to knock out a baton held in a human hand.This is Chinese company Unitree Robotics’G1 robot,embodying the innovation that has propelled China forward as the world’s second largest economy.
基金supported in part by the Key Technologies R&D Program of Jiangsu under Grants BE2023022 and BE2023022-2National Natural Science Foundation of China under Grants 62471204, 62531015+2 种基金Major Natural Science Foundation of the Higher Education Institutions of Jiangsu Province under Grant 24KJA510003Shanghai Kewei 24DP1500500the Fundamental Research Funds for the Central Universities under Grant 2242025K30025
文摘Federated learning(FL)is an intricate and privacy-preserving technique that enables distributed mobile devices to collaboratively train a machine learning model.However,in real-world FL scenarios,the training performance is affected by a combination of factors such as the mobility of user devices,limited communication and computational resources,thus making the user scheduling problem crucial.To tackle this problem,we jointly consider the user mobility,communication and computational capacities,and develop a stochastic optimization problem to minimize the convergence time.Specifically,we first establish a convergence bound on the training performance based on the heterogeneity of users’data,and then leverage this bound to derive the participation rate for each user.After deriving the user-specific participation rate,we aim to minimize the training latency by optimizing user scheduling under the constraints of the energy consumption and participation rate.Afterward,we transform this optimization problem to the contextual multi-armed bandit framework based on the Lyapunov method and solve it with the submodular reward enhanced linear upper confidence bound(SR-linUCB)algorithm.Experimental results demonstrate the superiority of our proposed algorithm on the training performance and time consumption compared with stateof-the-art algorithms for both independent and identically distributed(IID)and non-IID settings.
文摘Chinese Journal of Integrative Nursing(CJIN)is dedicated to promoting the internationalization of Chinese science and technology journals through innovative practices.Its pioneering technology of Authorship Metadata in Chinese,preserves authors'names in their native languages within global academic databases,demonstrating cultural confidence and enabling accurate tracking of academic achievements.By constructing an open science system,upgrading its technical platform,and ensuring the sustainable dis⁃semination of resources,CJIN is committed to establishing an international academic hub in the field of integrative nursing.It aims to build bridges for cultural exchange,and transmitting the accumulated wisdom of Traditional Chinese Medicine nursing.
文摘China’s new law offers protections and incentives to private companies Business leaders in China have welcomed the enactment of the Private Sector Promotion Law,calling it a genuine confidence booster.
基金supported by the National Natural Science Foundation of China(No.52107125)Applied Basic Research Project of Sichuan Province(No.2022NSFSC0250)Chengdu Guojia Electrical Engineering Co.,Ltd.(No.KYL202312-0043).
文摘Critical for metering and protection in electric railway traction power supply systems(TPSSs),the measurement performance of voltage transformers(VTs)must be timely and reliably monitored.This paper outlines a three-step,RMS data only method for evaluating VTs in TPSSs.First,a kernel principal component analysis approach is used to diagnose the VT exhibiting significant measurement deviations over time,mitigating the influence of stochastic fluctuations in traction loads.Second,a back propagation neural network is employed to continuously estimate the measurement deviations of the targeted VT.Third,a trend analysis method is developed to assess the evolution of the measurement performance of VTs.Case studies conducted on field data from an operational TPSS demonstrate the effectiveness of the proposed method in detecting VTs with measurement deviations exceeding 1%relative to their original accuracy levels.Additionally,the method accurately tracks deviation trends,enabling the identification of potential early-stage faults in VTs and helping prevent significant economic losses in TPSS operations.
