This paper discusses the algorithms for achieving global states and self-stabilizationfor communication protocols. It first describes a primary algorithm including its suitability forachieving global states and limita...This paper discusses the algorithms for achieving global states and self-stabilizationfor communication protocols. It first describes a primary algorithm including its suitability forachieving global states and limitation of self-stabilization for communication protocols, and thenpresents an improved algorithm that can be suitable to achieve global states and can be also usedto self-stabilizing communication protocols. Filially, it gives the proof of correctness and analysis ofcomplexity of the improved algorithm, and verifies its availability and efficiency by illustrating anexample protocol.展开更多
With the rapid exhaustion of fossil energy, the demand for clean and renewable energy is urgently growing. Thermoelectric(TE) materials, which can directly convert waste heat into electrical energy, are attracting gre...With the rapid exhaustion of fossil energy, the demand for clean and renewable energy is urgently growing. Thermoelectric(TE) materials, which can directly convert waste heat into electrical energy, are attracting great attention to address the energy crisis [1–3].展开更多
The China (Shenzhen) Business Invitation Convention for Tourist Scenic Spots and Hotels ’94, a great gathering held for the first time by China’s tourist trade, achieved outstanding results with a total of US$2.048 ...The China (Shenzhen) Business Invitation Convention for Tourist Scenic Spots and Hotels ’94, a great gathering held for the first time by China’s tourist trade, achieved outstanding results with a total of US$2.048 billion introduced. This business invitation convention was hosted jointly by the National Tourist Bureau and the Shenzhen Municipal People’s Government, in which over 2,000 representatives of 274 tourist units in this country’s 29 provinces and展开更多
Over 500 people of the shipping and transport fraternity gathered at Darling Harbor in Sydney on 17 October for the Australian Shipping and Transport Awards 2001 hosted by Lloyd’s List DCN. Through shipping and trans...Over 500 people of the shipping and transport fraternity gathered at Darling Harbor in Sydney on 17 October for the Australian Shipping and Transport Awards 2001 hosted by Lloyd’s List DCN. Through shipping and transport industry voting, COSCO has overcome strong competition on the Australia/East Asia trade to become winner of Customer Service Award. Other awards include three Highly Commended Award for Customer Service on the Australia/North Asia trade, and Sailing Schedule Reliability on both Australia/East Asia and North Asia trades. This is the sixth time for COSCO to be rewarded by Australian shipping industry. The awards show展开更多
Although all the symptoms of lack-of-sustainability are physical, the cause is a mindset that needs to be changed. The mindset includes an addictive lock on wanting materialistic solutions to all problems, most of whi...Although all the symptoms of lack-of-sustainability are physical, the cause is a mindset that needs to be changed. The mindset includes an addictive lock on wanting materialistic solutions to all problems, most of which are not materialistic, but are existential problems about meaningfulness in life. Meaningfulness is an inner understanding about life that is only achieved by insightful reflective thought. This kind of growth is enabled by the right kind of caring leadership that enables people to realise and properly establish their existential relationship with Nature.展开更多
Decision makers often face the need of performance guarantee with some sufficiently high proba-bility. Such problems can be modelled using a discrete time Markov decision process (MDP) with a probabilitycriterion for ...Decision makers often face the need of performance guarantee with some sufficiently high proba-bility. Such problems can be modelled using a discrete time Markov decision process (MDP) with a probabilitycriterion for the first achieving target value. The objective is to find a policy that maximizes the probabilityof the total discounted reward exceeding a target value in the preceding stages. We show that our formula-tion cannot be described by former models with standard criteria. We provide the properties of the objectivefunctions, optimal value functions and optimal policies. An algorithm for computing the optimal policies forthe finite horizon case is given. In this stochastic stopping model, we prove that there exists an optimal deter-ministic and stationary policy and the optimality equation has a unique solution. Using perturbation analysis,we approximate general models and prove the existence of ε-optimal policy for finite state space. We give anexample for the reliability of the satellite systems using the above theory. Finally, we extend these results tomore general cases.展开更多
The skill of Listening with comprehension is anessential part of communication and basic to ESL/EFL learning.Prediction is also a key process in un-derstanding spoken language.This article intends tooffer a definition...The skill of Listening with comprehension is anessential part of communication and basic to ESL/EFL learning.Prediction is also a key process in un-derstanding spoken language.This article intends tooffer a definition for prediction in ESL/EFL listening,examines its foundations,draws some insights into itsnature,and illustrates how to develop and employprediction in pre-listening and while-listening stages,also how to‘repair’prediction in the post-listeningstage,in an attempt to help listeners achieve the goalof better understanding.展开更多
Rational design/screening of more active,more selective,and less expensive catalysts has long been an important target in heterogeneous catalysis [1].In recent decades,the advances of density functional theory (DFT)ca...Rational design/screening of more active,more selective,and less expensive catalysts has long been an important target in heterogeneous catalysis [1].In recent decades,the advances of density functional theory (DFT)calculations allow us to theoretically evaluate the activity of catalysts.As shown in Figure 1(a),kinetics serves as the link between the atomic-scale properties obtained by DFT and turnover frequency (TOF)of catalysts.展开更多
Single-pixel cameras, which employ either structured illumination or image modulation and compressive sensing algorithms, provide an alternative approach to imaging in scenarios where the use of a detector array is re...Single-pixel cameras, which employ either structured illumination or image modulation and compressive sensing algorithms, provide an alternative approach to imaging in scenarios where the use of a detector array is restricted or difficult because of cost or technological constraints. In this work, we present a robust imaging method based on compressive imaging that sets two thresholds to select the measurement data for image reconstruction. The experimental and numerical simulation results show that the proposed double-threshold compressive imaging protocol provides better image quality than previous compressive imaging schemes. Faster imaging speeds can be attained using this scheme because it requires less data storage space and computing time. Thus, this denoising method offers a very effective approach to promote the implementation of compressive imaging in real-time practical applications.展开更多
Prepared with concrete and pragmatic questions,members of a media delegation from the Republic of the Congo toured the cities of Yunfu and Zhaoqing in Guangdong Province from 16 to 22 November 2025.They visited produc...Prepared with concrete and pragmatic questions,members of a media delegation from the Republic of the Congo toured the cities of Yunfu and Zhaoqing in Guangdong Province from 16 to 22 November 2025.They visited production workshops,explored research institutes,toured beautiful villages and discovered archaeological sites,searching for the keys to Chinese modernisation in its many dimensions.展开更多
It is the Chinese Government＇s pivotal goal to complete the building of a moderately prosperous society in all aspects by 2020. Compared with the economically developed coastal regions in east China, much work of pov...It is the Chinese Government＇s pivotal goal to complete the building of a moderately prosperous society in all aspects by 2020. Compared with the economically developed coastal regions in east China, much work of poverty reduction still needs to be done in the inland border regions to the west in the following three years.展开更多
As the number of short video users continues to grow,China is embracing the“mobile vertical screen era.”To satisfy users'demands for a quicker immersive experience,major platforms are adopting a vertical screen ...As the number of short video users continues to grow,China is embracing the“mobile vertical screen era.”To satisfy users'demands for a quicker immersive experience,major platforms are adopting a vertical screen format for micro-movies and videos,particularly given the maturity of the fragmented online context,initiatives for aging media adaptation,and the trend towards younger internet users.These factors provide a prime opportunity for the development of vertical screen video formats.Many short video platforms have begun experimenting with vertical documentaries.This paper takes the vertical documentary“Talking to Strangers”as a case study to discuss its strengths and weaknesses in conjunction with the future development of vertical screen documentaries.In today's era of fragmentation,where various types of work are emerging,how to make vertical screen documentaries into refined classics is a question worth considering and discussing deeply.展开更多
Achieving the dual carbon goal through energy transition has become a global consensus.The increasingly recognized of mineral resources is increasingly recognized due to their role in determining the pace of energy tr...Achieving the dual carbon goal through energy transition has become a global consensus.The increasingly recognized of mineral resources is increasingly recognized due to their role in determining the pace of energy transition.China has a leading capacity in the production and processing of certain minerals.However,because the major sources are abroad,China still faces certain disadvantages in acquiring upstream resources.In response to the complex international situation and high consumption demand。展开更多
Teacher–student relationships play a vital role in improving college students’academic performance and the quality of higher education.However,empirical studies with substantial data-driven insights remain limited.T...Teacher–student relationships play a vital role in improving college students’academic performance and the quality of higher education.However,empirical studies with substantial data-driven insights remain limited.To address this gap,this study collected 3278 questionnaires from seven universities across four provinces in China to analyze the key factors affecting college students’academic performance.A machine learning framework,CQFOA-KELM,was developed by enhancing the Fruit Fly Optimization Algorithm(FOA)with Covariance Matrix Adaptation Evolution Strategy(CMAES)and Quadratic Approximation(QA).CQFOA significantly improved population diversity and was validated on the IEEE CEC2017 benchmark functions.The CQFOA-KELM model achieved an accuracy of 98.15%and a sensitivity of 98.53%in predicting college students’academic performance.Additionally,it effectively identified the key factors influencing academic performance through the feature selection process.展开更多
文摘This paper discusses the algorithms for achieving global states and self-stabilizationfor communication protocols. It first describes a primary algorithm including its suitability forachieving global states and limitation of self-stabilization for communication protocols, and thenpresents an improved algorithm that can be suitable to achieve global states and can be also usedto self-stabilizing communication protocols. Filially, it gives the proof of correctness and analysis ofcomplexity of the improved algorithm, and verifies its availability and efficiency by illustrating anexample protocol.
基金financially supported by the Liaoning Revitalization Talents Program (No. XLYC1807209)。
文摘With the rapid exhaustion of fossil energy, the demand for clean and renewable energy is urgently growing. Thermoelectric(TE) materials, which can directly convert waste heat into electrical energy, are attracting great attention to address the energy crisis [1–3].
文摘The China (Shenzhen) Business Invitation Convention for Tourist Scenic Spots and Hotels ’94, a great gathering held for the first time by China’s tourist trade, achieved outstanding results with a total of US$2.048 billion introduced. This business invitation convention was hosted jointly by the National Tourist Bureau and the Shenzhen Municipal People’s Government, in which over 2,000 representatives of 274 tourist units in this country’s 29 provinces and
文摘Over 500 people of the shipping and transport fraternity gathered at Darling Harbor in Sydney on 17 October for the Australian Shipping and Transport Awards 2001 hosted by Lloyd’s List DCN. Through shipping and transport industry voting, COSCO has overcome strong competition on the Australia/East Asia trade to become winner of Customer Service Award. Other awards include three Highly Commended Award for Customer Service on the Australia/North Asia trade, and Sailing Schedule Reliability on both Australia/East Asia and North Asia trades. This is the sixth time for COSCO to be rewarded by Australian shipping industry. The awards show
文摘Although all the symptoms of lack-of-sustainability are physical, the cause is a mindset that needs to be changed. The mindset includes an addictive lock on wanting materialistic solutions to all problems, most of which are not materialistic, but are existential problems about meaningfulness in life. Meaningfulness is an inner understanding about life that is only achieved by insightful reflective thought. This kind of growth is enabled by the right kind of caring leadership that enables people to realise and properly establish their existential relationship with Nature.
基金We thank the referees for their valuable comments and suggestions.This work was supported by the National Natural Science Foundation of China(Grant No.19871046).
文摘Decision makers often face the need of performance guarantee with some sufficiently high proba-bility. Such problems can be modelled using a discrete time Markov decision process (MDP) with a probabilitycriterion for the first achieving target value. The objective is to find a policy that maximizes the probabilityof the total discounted reward exceeding a target value in the preceding stages. We show that our formula-tion cannot be described by former models with standard criteria. We provide the properties of the objectivefunctions, optimal value functions and optimal policies. An algorithm for computing the optimal policies forthe finite horizon case is given. In this stochastic stopping model, we prove that there exists an optimal deter-ministic and stationary policy and the optimality equation has a unique solution. Using perturbation analysis,we approximate general models and prove the existence of ε-optimal policy for finite state space. We give anexample for the reliability of the satellite systems using the above theory. Finally, we extend these results tomore general cases.
文摘The skill of Listening with comprehension is anessential part of communication and basic to ESL/EFL learning.Prediction is also a key process in un-derstanding spoken language.This article intends tooffer a definition for prediction in ESL/EFL listening,examines its foundations,draws some insights into itsnature,and illustrates how to develop and employprediction in pre-listening and while-listening stages,also how to‘repair’prediction in the post-listeningstage,in an attempt to help listeners achieve the goalof better understanding.
文摘Rational design/screening of more active,more selective,and less expensive catalysts has long been an important target in heterogeneous catalysis [1].In recent decades,the advances of density functional theory (DFT)calculations allow us to theoretically evaluate the activity of catalysts.As shown in Figure 1(a),kinetics serves as the link between the atomic-scale properties obtained by DFT and turnover frequency (TOF)of catalysts.
基金supported by the National Natural Science Foundation of China(Nos.11675014,61605218,61601442,61575207,and 61474123)the National Major Scientific Instruments Development Project of China(No.2013YQ030595)+2 种基金the National Defense Science and Technology Innovation Foundation of Chinese Academy of Sciences,the Science and Technology Innovation Foundation of Chinese Academy of Sciences(No.CXJJ-16S047)the Program of International Science and Technology Cooperation(No.2016YFE0131500)the Advance Research Project(No.30102070101)
文摘Single-pixel cameras, which employ either structured illumination or image modulation and compressive sensing algorithms, provide an alternative approach to imaging in scenarios where the use of a detector array is restricted or difficult because of cost or technological constraints. In this work, we present a robust imaging method based on compressive imaging that sets two thresholds to select the measurement data for image reconstruction. The experimental and numerical simulation results show that the proposed double-threshold compressive imaging protocol provides better image quality than previous compressive imaging schemes. Faster imaging speeds can be attained using this scheme because it requires less data storage space and computing time. Thus, this denoising method offers a very effective approach to promote the implementation of compressive imaging in real-time practical applications.
文摘Prepared with concrete and pragmatic questions,members of a media delegation from the Republic of the Congo toured the cities of Yunfu and Zhaoqing in Guangdong Province from 16 to 22 November 2025.They visited production workshops,explored research institutes,toured beautiful villages and discovered archaeological sites,searching for the keys to Chinese modernisation in its many dimensions.
文摘It is the Chinese Government＇s pivotal goal to complete the building of a moderately prosperous society in all aspects by 2020. Compared with the economically developed coastal regions in east China, much work of poverty reduction still needs to be done in the inland border regions to the west in the following three years.
文摘As the number of short video users continues to grow,China is embracing the“mobile vertical screen era.”To satisfy users'demands for a quicker immersive experience,major platforms are adopting a vertical screen format for micro-movies and videos,particularly given the maturity of the fragmented online context,initiatives for aging media adaptation,and the trend towards younger internet users.These factors provide a prime opportunity for the development of vertical screen video formats.Many short video platforms have begun experimenting with vertical documentaries.This paper takes the vertical documentary“Talking to Strangers”as a case study to discuss its strengths and weaknesses in conjunction with the future development of vertical screen documentaries.In today's era of fragmentation,where various types of work are emerging,how to make vertical screen documentaries into refined classics is a question worth considering and discussing deeply.
基金the General Project of the National Natural Science Foundation of China,“Research on the Method of CO_(2)Technology Economic Evaluation Based on Net Energy and Carbon Input-Output”(72274212)。
文摘Achieving the dual carbon goal through energy transition has become a global consensus.The increasingly recognized of mineral resources is increasingly recognized due to their role in determining the pace of energy transition.China has a leading capacity in the production and processing of certain minerals.However,because the major sources are abroad,China still faces certain disadvantages in acquiring upstream resources.In response to the complex international situation and high consumption demand。
文摘Teacher–student relationships play a vital role in improving college students’academic performance and the quality of higher education.However,empirical studies with substantial data-driven insights remain limited.To address this gap,this study collected 3278 questionnaires from seven universities across four provinces in China to analyze the key factors affecting college students’academic performance.A machine learning framework,CQFOA-KELM,was developed by enhancing the Fruit Fly Optimization Algorithm(FOA)with Covariance Matrix Adaptation Evolution Strategy(CMAES)and Quadratic Approximation(QA).CQFOA significantly improved population diversity and was validated on the IEEE CEC2017 benchmark functions.The CQFOA-KELM model achieved an accuracy of 98.15%and a sensitivity of 98.53%in predicting college students’academic performance.Additionally,it effectively identified the key factors influencing academic performance through the feature selection process.
