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
<strong>Background: </strong>Quality education is one of the important factors in empowering midwives to provide quality health care services to mothers and newborns irrespective of their practice settings...<strong>Background: </strong>Quality education is one of the important factors in empowering midwives to provide quality health care services to mothers and newborns irrespective of their practice settings. Due to lack of standardization of the duration, content, and structure of midwifery education and different pathways to midwifery across the world, midwives may lack the confidence to deliver quality health care services in the main domain of the ICM competences. <strong>Aim:</strong> To assess the confidence of final year midwifery students in the domain of new-born care based on the ICM midwifery competencies. <strong>Methods:</strong> The first phase consisted of a quick situation analysis of midwifery education and regulation in Zambia, followed by a cross-sectional survey through a self-administered questionnaire to assess the confidence of final year midwifery students. <strong>Results: </strong>Most (51.9%) of the respondents were aged between 18 and 28 years, and majority of them were placed in Levels 1, 2 and 3 Hospitals and also clinics for their clinical practice, with between one hundred to ten thousand annual births, followed by 16.9% who were placed in Level 3 hospitals only. Most students (38.3%) reported receiving classroom instruction by both Lecture and Demonstration. Few students (22.7%) responded that they were not satisfied with their clinical supervision, while 77.3% were satisfied. There was significant association between confidence to perform skills independently and having enough time to practice on models in the labs (p value = 0.024), confidence when practiced for the first time on mothers (p value = 0.007) and satisfaction with supervision during clinical practice (p value = 0.000). Binary logistic regression of characteristics associated with confidence to perform new-born skills independently revealed significant association between satisfaction with clinical supervision and confidence to perform skills independently, 95% CI [1.83, 15.37]. <strong>Conclusion: </strong>Midwifery students need quality training both theoretically and practically in order for them to gain confidence in newborn care upon completion of their training. They need adequate time to practice on models in the skills laboratory, and need adequate clinical supervision for them to gain confidence in performing new born skills independently.展开更多
Cultural confidence represents a fundamental and profound force that sustains the development of a country and a na-tion. It is also a prerequisite for college students' growth and development. Given phenomena suc...Cultural confidence represents a fundamental and profound force that sustains the development of a country and a na-tion. It is also a prerequisite for college students' growth and development. Given phenomena such as college students' alienationfrom Chinese culture and"Chinese culture aphasia", this paper tries to analyze the reasons behind it. It then states the significanceand ways of helping college students build up cultural confidence through English teaching in the context of new liberal arts.展开更多
" Four matters of confidence" are the core and ideal foundation of socialist construction. Taking Northwest A&F University as an example,this paper analyzes and explores the cultivation path of " fo..." Four matters of confidence" are the core and ideal foundation of socialist construction. Taking Northwest A&F University as an example,this paper analyzes and explores the cultivation path of " four matters of confidence" around the education problem of " four matters of confidence" of agricultural and forestry college students,in order to improve the value identity and belief of " four matters of confidence" among college students of agriculture and forestry.展开更多
Objective:This study aimed to design an evaluation scale of traditional Chinese medicine(TCM)confidence and then evaluate its validity and reliability.Methods:Three parallel samples with TCM learning experience were i...Objective:This study aimed to design an evaluation scale of traditional Chinese medicine(TCM)confidence and then evaluate its validity and reliability.Methods:Three parallel samples with TCM learning experience were included in this current study.Randomly selected 500 nursing students were included factor analysis and reliability and validity analyses.After 4 weeks,200 nursing students were recruited to retest the reliability.The evaluation tool of TCM confidence included 6 dimensions and 25 entries.Results:Cronbach's a coefficient of the evaluation scale was 0.95 and that of the 6 observed aspects were higher than 0.90,and splithalf reliability was 0.81.For the retest reliability,Cronbach's a coefficient of the evaluation scale was 0.93 and that of the 6 examined aspects was all over 0.80.The index of content validity Scale Content Validity Index(S-CVI)was 0.92 and Item Content Validity Index(I-CVI)was 0.83–1.00.Conclusions:Observed results may indicate that the designed tool can be used to assess the TCM confidence level of students with TCM studied experience and also can evaluate results of TCM education during studying TCM lectures.展开更多
Objective: To evaluate the correlation between time management disposition and ability confidence of Nursing Students in China through the Pearson correlation coefficient. Methods: Electronic databases including the...Objective: To evaluate the correlation between time management disposition and ability confidence of Nursing Students in China through the Pearson correlation coefficient. Methods: Electronic databases including the Cochrane library, PubMed, EMBASE, the Web of Science, CBM, Wanfang, VIP and CNKI were searched from inception to October 2017 to collect literature on the correlation between time manage-ment disposition and ability confidence of Chinese nursing students. The studies were examined according to the inclusion and exclusion criteria. After extracting data and evaluating the quality of the included studies. Meta-analysis was carried out using Stata 12.0 software. Results: A total of 7 articles with 1632 nursing students were included, and the quality of the literature was at medium level. Meta-analysis shown the total score of time management disposition of Chinese nursing students and its three dimensions were related to ability confidence. The summary correlation coefficient between time management disposition and ability confidence was 0.52 (0.43 to 0.59) ; There is a weak correlation between time value and ability confidence (r, 0.33; 95% CI, 0.25 to 0.39); There was a moderate level of correlation between time control and ability confidence (r, 0.49; 95% CI, 0.43 to 0.54); There was a moderate level of correlation between time efficacy and ability confidence (0.47, 0.41, 0.53).And the relevance of nursing time management disposition and behavioral confidence varies with the nursing student's area, nursing student's diploma, measurement tools and sample size. Conclusion: The time man- agement disposition of Chinese nursing students is moderately related to ability confidence. When there are different in nursing students in the area, nursing diploma, measurement tools and sample size, the relevance is very different. The time management disposition of Chinese nursing students and their ability confidence are mutually reinforcing, and the time management disposition and their ability confidence should be further strengthened in the future.展开更多
Culture confidence is an important internal factor to promote the development of modern design in China.College students majoring in design are the mainstay of Chinese design field in the future,but some of them are l...Culture confidence is an important internal factor to promote the development of modern design in China.College students majoring in design are the mainstay of Chinese design field in the future,but some of them are lack of cultural confidence.Therefore,the school should strengthen the cultural confidence of college students majoring in design from the aspects of curriculum setting and reform,environment shaping and professional belief,so that their design originality can be stimulated and maintained,and the“Chinese original design”belonging to the new era can be created.展开更多
Culture is a unique phenomenon in human society,which reflects the wisdom of human beings.It is not only the core of a country’s cohesion,but also the spiritual driving force for a country to be prosperous and develo...Culture is a unique phenomenon in human society,which reflects the wisdom of human beings.It is not only the core of a country’s cohesion,but also the spiritual driving force for a country to be prosperous and developed.Cultural confidence is an important theoretical content and component of Xi Jinping Thought on Socialism with Chinese Characteristics for a New Era,and an essential source of strength for the great rejuvenation of the Chinese nation.Under the influence of foreign cultures,college students in the new era have problems such as loss of value and lack of confidence in terms of cultural confidence.Therefore,in the course of expanding foreign exchanges and carrying out reform and opening up,it has become an important mission that cannot be delayed for the ideological and political theory teaching in colleges and universities to strengthen the cultural confidence of college students and reinforce their cultural confidence education.展开更多
With the rapid development of the education industry,higher requirements have been put forward for college English education and teaching,accelerating the pace of college English reform.Issues such as how to integrate...With the rapid development of the education industry,higher requirements have been put forward for college English education and teaching,accelerating the pace of college English reform.Issues such as how to integrate knowledge transmission,language expression skill improvement,cultural element extraction,and ideological and political education,and present the role of curriculum education function have attracted attention.In the era of informatization,college students’thinking has undergone certain changes and gradually developed towards diversification.Therefore,universities should start from the perspective of cultural confidence,extract valuable ideological and political elements,and explore effective tourism ideological and political teaching methods.While helping college students enhance their cultural confidence,it is also beneficial for them to better inherit traditional Chinese culture.This article conducts an in-depth exploration of ideological and political education in college English courses from the perspective of“cultural confidence”and uses scientific and effective measures to solve the problems encountered,aiming to provide valuable guidelines for relevant researchers.展开更多
Cultural confidence is of great significance in the rise and fall of the national development, cultural security, and nation-al spiritual independence. This paper first analyzes the possible reasons for the lack of un...Cultural confidence is of great significance in the rise and fall of the national development, cultural security, and nation-al spiritual independence. This paper first analyzes the possible reasons for the lack of university students' cultural confidence and then put forwards with some means to cultivate their' cultural consciousness and cultural confidence through English teaching .展开更多
Risk assessment is a crucial component of collision warning and avoidance systems for intelligent vehicles.Reachability-based formal approaches have been developed to ensure driving safety to accurately detect potenti...Risk assessment is a crucial component of collision warning and avoidance systems for intelligent vehicles.Reachability-based formal approaches have been developed to ensure driving safety to accurately detect potential vehicle collisions.However,they suffer from over-conservatism,potentially resulting in false–positive risk events in complicated real-world applications.In this paper,we combine two reachability analysis techniques,a backward reachable set(BRS)and a stochastic forward reachable set(FRS),and propose an integrated probabilistic collision–detection framework for highway driving.Within this framework,we can first use a BRS to formally check whether a two-vehicle interaction is safe;otherwise,a prediction-based stochastic FRS is employed to estimate the collision probability at each future time step.Thus,the framework can not only identify non-risky events with guaranteed safety but also provide accurate collision risk estimation in safety-critical events.To construct the stochastic FRS,we develop a neural network-based acceleration model for surrounding vehicles and further incorporate a confidence-aware dynamic belief to improve the prediction accuracy.Extensive experiments were conducted to validate the performance of the acceleration prediction model based on naturalistic highway driving data.The efficiency and effectiveness of the framework with infused confidence beliefs were tested in both naturalistic and simulated highway scenarios.The proposed risk assessment framework is promising for real-world applications.展开更多
Looking forward to 2024,what opportunities and challenges will global development face?In particular,how can the global economy get rid of the“sequelae”of the pandemic?At the 170th“Monthly Talk on the Economy”held...Looking forward to 2024,what opportunities and challenges will global development face?In particular,how can the global economy get rid of the“sequelae”of the pandemic?At the 170th“Monthly Talk on the Economy”held recently by the China Center for International Economic Exchange,experts analyzed the world’s economy since the outbreak of COVID-19,and made clear the context of and provided suggestions for global development in 2024.展开更多
Addressing the insufficiency in down-regulation leeway within integrated energy systems stemming from the erratic and volatile nature of wind and solar renewable energy generation,this study focuses on formulating a c...Addressing the insufficiency in down-regulation leeway within integrated energy systems stemming from the erratic and volatile nature of wind and solar renewable energy generation,this study focuses on formulating a coordinated strategy involving the carbon capture unit of the integrated energy system and the resources on the load storage side.A scheduling model is devised that takes into account the confidence interval associated with renewable energy generation,with the overarching goal of optimizing the system for low-carbon operation.To begin with,an in-depth analysis is conducted on the temporal energy-shifting attributes and the low-carbon modulation mechanisms exhibited by the source-side carbon capture power plant within the context of integrated and adaptable operational paradigms.Drawing from this analysis,a model is devised to represent the adjustable resources on the charge-storage side,predicated on the principles of electro-thermal coupling within the energy system.Subsequently,the dissimilarities in the confidence intervals of renewable energy generation are considered,leading to the proposition of a flexible upper threshold for the confidence interval.Building on this,a low-carbon dispatch model is established for the integrated energy system,factoring in the margin allowed by the adjustable resources.In the final phase,a simulation is performed on a regional electric heating integrated energy system.This simulation seeks to assess the impact of source-load-storage coordination on the system’s low-carbon operation across various scenarios of reduction margin reserves.The findings underscore that the proactive scheduling model incorporating confidence interval considerations for reduction margin reserves effectively mitigates the uncertainties tied to renewable energy generation.Through harmonized orchestration of source,load,and storage elements,it expands the utilization scope for renewable energy,safeguards the economic efficiency of system operations under low-carbon emission conditions,and empirically validates the soundness and efficacy of the proposed approach.展开更多
On March 12,the official account of the International Business Daily of the Ministry of Commerce published an article titled“Foreign trade enterprises:full of confidence,clear direction,strong motivation”.The conten...On March 12,the official account of the International Business Daily of the Ministry of Commerce published an article titled“Foreign trade enterprises:full of confidence,clear direction,strong motivation”.The content is as follows:This year,China is still facing a tough foreign trade situation.On the one hand,many international organizations predict that global economic growth in 2024 will still be lower than the historical average and the pressure on external demand will increase;on the other hand,trade protectionism and unilateralism are on the rise,geopolitical conflicts,the global“super election year”and other spillover factors have created many uncertainties.展开更多
The high level of the cultural confidence is essential to instruct college students to integrate individual dream into Chinese dream,which is also the spirit source to transmit positive social energy.However,the curre...The high level of the cultural confidence is essential to instruct college students to integrate individual dream into Chinese dream,which is also the spirit source to transmit positive social energy.However,the current part of college students lack of cultural self-confidence,the loss display mainly that they are cognitive deficiencies on the national traditional culture,they blind recognition of western culture,they do not pay attention to contemporary Chinese advanced culture.展开更多
Let x 1,x 2,… be independent identically distributed (i.i.d.) random variables, in which x n=0 or 1 and the probability of {x n=1} is p. Here p is unknown. Let τ be any finite stopping ...Let x 1,x 2,… be independent identically distributed (i.i.d.) random variables, in which x n=0 or 1 and the probability of {x n=1} is p. Here p is unknown. Let τ be any finite stopping time for (x n,n1). For any sequential sample (x 1,x 2,…,x τ ) and γ∈(0,1), we have given an optimal confidence limit of p with confidence level γ . Some related problems are also discussed.展开更多
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<strong>Background: </strong>Quality education is one of the important factors in empowering midwives to provide quality health care services to mothers and newborns irrespective of their practice settings. Due to lack of standardization of the duration, content, and structure of midwifery education and different pathways to midwifery across the world, midwives may lack the confidence to deliver quality health care services in the main domain of the ICM competences. <strong>Aim:</strong> To assess the confidence of final year midwifery students in the domain of new-born care based on the ICM midwifery competencies. <strong>Methods:</strong> The first phase consisted of a quick situation analysis of midwifery education and regulation in Zambia, followed by a cross-sectional survey through a self-administered questionnaire to assess the confidence of final year midwifery students. <strong>Results: </strong>Most (51.9%) of the respondents were aged between 18 and 28 years, and majority of them were placed in Levels 1, 2 and 3 Hospitals and also clinics for their clinical practice, with between one hundred to ten thousand annual births, followed by 16.9% who were placed in Level 3 hospitals only. Most students (38.3%) reported receiving classroom instruction by both Lecture and Demonstration. Few students (22.7%) responded that they were not satisfied with their clinical supervision, while 77.3% were satisfied. There was significant association between confidence to perform skills independently and having enough time to practice on models in the labs (p value = 0.024), confidence when practiced for the first time on mothers (p value = 0.007) and satisfaction with supervision during clinical practice (p value = 0.000). Binary logistic regression of characteristics associated with confidence to perform new-born skills independently revealed significant association between satisfaction with clinical supervision and confidence to perform skills independently, 95% CI [1.83, 15.37]. <strong>Conclusion: </strong>Midwifery students need quality training both theoretically and practically in order for them to gain confidence in newborn care upon completion of their training. They need adequate time to practice on models in the skills laboratory, and need adequate clinical supervision for them to gain confidence in performing new born skills independently.
文摘Cultural confidence represents a fundamental and profound force that sustains the development of a country and a na-tion. It is also a prerequisite for college students' growth and development. Given phenomena such as college students' alienationfrom Chinese culture and"Chinese culture aphasia", this paper tries to analyze the reasons behind it. It then states the significanceand ways of helping college students build up cultural confidence through English teaching in the context of new liberal arts.
基金Supported by Humanities and Social Sciences Project of Northwest A&F University in 2016(2016RWYB09)Higher Education Scientific Research Project of the Shaanxi Higher Education Society in 2017(XGH17038)
文摘" Four matters of confidence" are the core and ideal foundation of socialist construction. Taking Northwest A&F University as an example,this paper analyzes and explores the cultivation path of " four matters of confidence" around the education problem of " four matters of confidence" of agricultural and forestry college students,in order to improve the value identity and belief of " four matters of confidence" among college students of agriculture and forestry.
文摘Objective:This study aimed to design an evaluation scale of traditional Chinese medicine(TCM)confidence and then evaluate its validity and reliability.Methods:Three parallel samples with TCM learning experience were included in this current study.Randomly selected 500 nursing students were included factor analysis and reliability and validity analyses.After 4 weeks,200 nursing students were recruited to retest the reliability.The evaluation tool of TCM confidence included 6 dimensions and 25 entries.Results:Cronbach's a coefficient of the evaluation scale was 0.95 and that of the 6 observed aspects were higher than 0.90,and splithalf reliability was 0.81.For the retest reliability,Cronbach's a coefficient of the evaluation scale was 0.93 and that of the 6 examined aspects was all over 0.80.The index of content validity Scale Content Validity Index(S-CVI)was 0.92 and Item Content Validity Index(I-CVI)was 0.83–1.00.Conclusions:Observed results may indicate that the designed tool can be used to assess the TCM confidence level of students with TCM studied experience and also can evaluate results of TCM education during studying TCM lectures.
文摘Objective: To evaluate the correlation between time management disposition and ability confidence of Nursing Students in China through the Pearson correlation coefficient. Methods: Electronic databases including the Cochrane library, PubMed, EMBASE, the Web of Science, CBM, Wanfang, VIP and CNKI were searched from inception to October 2017 to collect literature on the correlation between time manage-ment disposition and ability confidence of Chinese nursing students. The studies were examined according to the inclusion and exclusion criteria. After extracting data and evaluating the quality of the included studies. Meta-analysis was carried out using Stata 12.0 software. Results: A total of 7 articles with 1632 nursing students were included, and the quality of the literature was at medium level. Meta-analysis shown the total score of time management disposition of Chinese nursing students and its three dimensions were related to ability confidence. The summary correlation coefficient between time management disposition and ability confidence was 0.52 (0.43 to 0.59) ; There is a weak correlation between time value and ability confidence (r, 0.33; 95% CI, 0.25 to 0.39); There was a moderate level of correlation between time control and ability confidence (r, 0.49; 95% CI, 0.43 to 0.54); There was a moderate level of correlation between time efficacy and ability confidence (0.47, 0.41, 0.53).And the relevance of nursing time management disposition and behavioral confidence varies with the nursing student's area, nursing student's diploma, measurement tools and sample size. Conclusion: The time man- agement disposition of Chinese nursing students is moderately related to ability confidence. When there are different in nursing students in the area, nursing diploma, measurement tools and sample size, the relevance is very different. The time management disposition of Chinese nursing students and their ability confidence are mutually reinforcing, and the time management disposition and their ability confidence should be further strengthened in the future.
文摘Culture confidence is an important internal factor to promote the development of modern design in China.College students majoring in design are the mainstay of Chinese design field in the future,but some of them are lack of cultural confidence.Therefore,the school should strengthen the cultural confidence of college students majoring in design from the aspects of curriculum setting and reform,environment shaping and professional belief,so that their design originality can be stimulated and maintained,and the“Chinese original design”belonging to the new era can be created.
文摘Culture is a unique phenomenon in human society,which reflects the wisdom of human beings.It is not only the core of a country’s cohesion,but also the spiritual driving force for a country to be prosperous and developed.Cultural confidence is an important theoretical content and component of Xi Jinping Thought on Socialism with Chinese Characteristics for a New Era,and an essential source of strength for the great rejuvenation of the Chinese nation.Under the influence of foreign cultures,college students in the new era have problems such as loss of value and lack of confidence in terms of cultural confidence.Therefore,in the course of expanding foreign exchanges and carrying out reform and opening up,it has become an important mission that cannot be delayed for the ideological and political theory teaching in colleges and universities to strengthen the cultural confidence of college students and reinforce their cultural confidence education.
文摘With the rapid development of the education industry,higher requirements have been put forward for college English education and teaching,accelerating the pace of college English reform.Issues such as how to integrate knowledge transmission,language expression skill improvement,cultural element extraction,and ideological and political education,and present the role of curriculum education function have attracted attention.In the era of informatization,college students’thinking has undergone certain changes and gradually developed towards diversification.Therefore,universities should start from the perspective of cultural confidence,extract valuable ideological and political elements,and explore effective tourism ideological and political teaching methods.While helping college students enhance their cultural confidence,it is also beneficial for them to better inherit traditional Chinese culture.This article conducts an in-depth exploration of ideological and political education in college English courses from the perspective of“cultural confidence”and uses scientific and effective measures to solve the problems encountered,aiming to provide valuable guidelines for relevant researchers.
文摘Cultural confidence is of great significance in the rise and fall of the national development, cultural security, and nation-al spiritual independence. This paper first analyzes the possible reasons for the lack of university students' cultural confidence and then put forwards with some means to cultivate their' cultural consciousness and cultural confidence through English teaching .
基金supported by the proactive SAFEty systems and tools for a constantly UPgrading road environment(SAFE-UP)projectfunding from the European Union’s Horizon 2020 Research and Innovation Program(861570)。
文摘Risk assessment is a crucial component of collision warning and avoidance systems for intelligent vehicles.Reachability-based formal approaches have been developed to ensure driving safety to accurately detect potential vehicle collisions.However,they suffer from over-conservatism,potentially resulting in false–positive risk events in complicated real-world applications.In this paper,we combine two reachability analysis techniques,a backward reachable set(BRS)and a stochastic forward reachable set(FRS),and propose an integrated probabilistic collision–detection framework for highway driving.Within this framework,we can first use a BRS to formally check whether a two-vehicle interaction is safe;otherwise,a prediction-based stochastic FRS is employed to estimate the collision probability at each future time step.Thus,the framework can not only identify non-risky events with guaranteed safety but also provide accurate collision risk estimation in safety-critical events.To construct the stochastic FRS,we develop a neural network-based acceleration model for surrounding vehicles and further incorporate a confidence-aware dynamic belief to improve the prediction accuracy.Extensive experiments were conducted to validate the performance of the acceleration prediction model based on naturalistic highway driving data.The efficiency and effectiveness of the framework with infused confidence beliefs were tested in both naturalistic and simulated highway scenarios.The proposed risk assessment framework is promising for real-world applications.
文摘Looking forward to 2024,what opportunities and challenges will global development face?In particular,how can the global economy get rid of the“sequelae”of the pandemic?At the 170th“Monthly Talk on the Economy”held recently by the China Center for International Economic Exchange,experts analyzed the world’s economy since the outbreak of COVID-19,and made clear the context of and provided suggestions for global development in 2024.
基金supported by the Science and Technology Project of State Grid Inner Mongolia East Power Co.,Ltd.:Research on Carbon Flow Apportionment and Assessment Methods for Distributed Energy under Dual Carbon Targets(52664K220004).
文摘Addressing the insufficiency in down-regulation leeway within integrated energy systems stemming from the erratic and volatile nature of wind and solar renewable energy generation,this study focuses on formulating a coordinated strategy involving the carbon capture unit of the integrated energy system and the resources on the load storage side.A scheduling model is devised that takes into account the confidence interval associated with renewable energy generation,with the overarching goal of optimizing the system for low-carbon operation.To begin with,an in-depth analysis is conducted on the temporal energy-shifting attributes and the low-carbon modulation mechanisms exhibited by the source-side carbon capture power plant within the context of integrated and adaptable operational paradigms.Drawing from this analysis,a model is devised to represent the adjustable resources on the charge-storage side,predicated on the principles of electro-thermal coupling within the energy system.Subsequently,the dissimilarities in the confidence intervals of renewable energy generation are considered,leading to the proposition of a flexible upper threshold for the confidence interval.Building on this,a low-carbon dispatch model is established for the integrated energy system,factoring in the margin allowed by the adjustable resources.In the final phase,a simulation is performed on a regional electric heating integrated energy system.This simulation seeks to assess the impact of source-load-storage coordination on the system’s low-carbon operation across various scenarios of reduction margin reserves.The findings underscore that the proactive scheduling model incorporating confidence interval considerations for reduction margin reserves effectively mitigates the uncertainties tied to renewable energy generation.Through harmonized orchestration of source,load,and storage elements,it expands the utilization scope for renewable energy,safeguards the economic efficiency of system operations under low-carbon emission conditions,and empirically validates the soundness and efficacy of the proposed approach.
文摘On March 12,the official account of the International Business Daily of the Ministry of Commerce published an article titled“Foreign trade enterprises:full of confidence,clear direction,strong motivation”.The content is as follows:This year,China is still facing a tough foreign trade situation.On the one hand,many international organizations predict that global economic growth in 2024 will still be lower than the historical average and the pressure on external demand will increase;on the other hand,trade protectionism and unilateralism are on the rise,geopolitical conflicts,the global“super election year”and other spillover factors have created many uncertainties.
文摘The high level of the cultural confidence is essential to instruct college students to integrate individual dream into Chinese dream,which is also the spirit source to transmit positive social energy.However,the current part of college students lack of cultural self-confidence,the loss display mainly that they are cognitive deficiencies on the national traditional culture,they blind recognition of western culture,they do not pay attention to contemporary Chinese advanced culture.
文摘Let x 1,x 2,… be independent identically distributed (i.i.d.) random variables, in which x n=0 or 1 and the probability of {x n=1} is p. Here p is unknown. Let τ be any finite stopping time for (x n,n1). For any sequential sample (x 1,x 2,…,x τ ) and γ∈(0,1), we have given an optimal confidence limit of p with confidence level γ . Some related problems are also discussed.