Na_(3)V_(2)(PO_(4))_(3)(NVP)has garnered great attentions as a prospective cathode material for sodium-ion batteries(SIBs)by virtue of its decent theoretical capacity,superior ion conductivity and high structural stab...Na_(3)V_(2)(PO_(4))_(3)(NVP)has garnered great attentions as a prospective cathode material for sodium-ion batteries(SIBs)by virtue of its decent theoretical capacity,superior ion conductivity and high structural stability.However,the inherently poor electronic conductivity and sluggish sodium-ion diffusion kinetics of NVP material give rise to inferior rate performance and unsatisfactory energy density,which strictly confine its further application in SIBs.Thus,it is of significance to boost the sodium storage performance of NVP cathode material.Up to now,many methods have been developed to optimize the electrochemical performance of NVP cathode material.In this review,the latest advances in optimization strategies for improving the electrochemical performance of NVP cathode material are well summarized and discussed,including carbon coating or modification,foreign-ion doping or substitution and nanostructure and morphology design.The foreign-ion doping or substitution is highlighted,involving Na,V,and PO_(4)^(3−)sites,which include single-site doping,multiple-site doping,single-ion doping,multiple-ion doping and so on.Furthermore,the challenges and prospects of high-performance NVP cathode material are also put forward.It is believed that this review can provide a useful reference for designing and developing high-performance NVP cathode material toward the large-scale application in SIBs.展开更多
Electrocatalytic carbon dioxide reduction(ECO_(2)RR)serves as a promising approach for converting CO_(2)into energy-dense fuels and high-value chemicals,garnering substantial interest across academic and industrial se...Electrocatalytic carbon dioxide reduction(ECO_(2)RR)serves as a promising approach for converting CO_(2)into energy-dense fuels and high-value chemicals,garnering substantial interest across academic and industrial sectors.Copper(Cu)-based electrocatalysts are widely acknowledged as highly effective for ECO_(2)RR,primarily due to their optimal adsorption energy for*CO.Nonetheless,significant challenges remain to be addressed in transitioning Cu-based catalysts from research settings to industrial applications,including the low stability and unavoidable side reactions.This article aims to i)systematically examine the deactivation mechanisms of Cu-based catalysts,including changes in valence states,surface poisoning,and restructuring(agglomeration,dissolution,Ostwald ripening);ii)provide a timely overview of cutting-edge strategies to enhance the stability of Cu-based catalysts,such as ligand effects,heteroatom doping,support optimization,size effect,and restructuring;iii)highlight critical areas and prospective development directions that warrant further exploration to expedite the industrial adoption of Cu-based catalysts in ECO_(2)RR.展开更多
With the rapid development of electronic information engineering,high-speed digital circuits have been increasingly widely applied in various fields.In high-speed digital circuits,signal integrity is prone to interfer...With the rapid development of electronic information engineering,high-speed digital circuits have been increasingly widely applied in various fields.In high-speed digital circuits,signal integrity is prone to interference from various external factors,leading to issues such as signal distortion or degradation of system performance.Based on this,this paper conducts research on the optimization strategies for signal integrity of high-speed digital circuits in electronic information engineering.It deeply analyzes the importance of high-speed digital circuits,elaborates on the challenges they face and the specific manifestations of signal integrity issues,and proposes a series of optimization strategies in electronic information engineering.The aim is to improve the signal integrity of highspeed digital circuits and provide theoretical support and practical guidance for the development of related fields.展开更多
The rapid development of artificial intelligence(AI)technology in today’s society has brought varying degrees of influence to various industries and fields,and this transformation is also playing a profound role in t...The rapid development of artificial intelligence(AI)technology in today’s society has brought varying degrees of influence to various industries and fields,and this transformation is also playing a profound role in the field of education.This paper intends to analyze the social background,cultural background,and policy background of introducing AI technology into the primary school music education system,deeply explore the important value and practical path of applying AI technology in the field of primary school music education,and provide corresponding optimization strategies for teaching,with a view to providing some theoretical references for promoting the in-depth integration of AI and primary school music education.展开更多
This article focuses on the challenges of rural economic development under the strategy of rural revitalization,and deeply analyzes the current situation of rural economic development.Research has found that although ...This article focuses on the challenges of rural economic development under the strategy of rural revitalization,and deeply analyzes the current situation of rural economic development.Research has found that although the rural revitalization strategy has achieved significant results in improving residents’quality of life,promoting agricultural modernization,it still faces challenges such as severe loss of human resources,insufficient agricultural technological innovation,and backward infrastructure construction.In response to these challenges,this paper proposes optimization strategies from three aspects:strengthening rural education and talent team construction,promoting agricultural technology innovation and achievement transformation,and increasing investment in rural infrastructure construction.展开更多
The construction of island power grids is a systematic engineering task.To ensure the safe operation of power grid systems,optimizing the line layout of island power grids is crucial.Especially in the current context ...The construction of island power grids is a systematic engineering task.To ensure the safe operation of power grid systems,optimizing the line layout of island power grids is crucial.Especially in the current context of large-scale distributed renewable energy integration into the power grid,conventional island power grid line layouts can no longer meet actual demands.It is necessary to combine the operational characteristics of island power systems and historical load data to perform load forecasting,thereby generating power grid line layout paths.This article focuses on large-scale distributed renewable energy integration,summarizing optimization strategies for island power grid line layouts,and providing a solid guarantee for the safe and stable operation of island power systems.展开更多
A systematic analysis is performed to assess the current situation of transportation and tourism integration in 20 districts and counties located along National Highway 310(Gansu-Qinghai section),and optimization stra...A systematic analysis is performed to assess the current situation of transportation and tourism integration in 20 districts and counties located along National Highway 310(Gansu-Qinghai section),and optimization strategies are explored based on the findings of this analysis.The findings indicate a pressing necessity for further improvement in the practice of transportation and tourism integration in both Gansu and Qinghai provinces.Based on this foundation,a development framework for transportation and tourism integration has been established.This framework simulates a“fast-forward-slow-travel”system in which tourists commence their journey from the origin,traverse through core,secondary,and subsidiary tourist destinations,and ultimately reach the core,secondary,and subsidiary attractions.Furthermore,this study presents optimization recommendations for the integrated development of regional transportation and tourism along the designated route.These suggestions encompass the establishment and optimization of facilities and service points,the planning and design of tourism routes,the promotion of regional synergistic development,the construction of intelligent tourism,and the implementation of green tourism pathways.展开更多
Exploration of alternative energy storage systems has been more than necessary in view of the supply risks haunting lithium-ion batteries.Among various alternative electrochemical energy storage devices,sodium-ion bat...Exploration of alternative energy storage systems has been more than necessary in view of the supply risks haunting lithium-ion batteries.Among various alternative electrochemical energy storage devices,sodium-ion battery outstands with advantages of cost-effectiveness and comparable energy density with lithium-ion batteries.Thanks to the similar electrochemical mechanism,the research and development of lithium-ion batteries have forged a solid foundation for sodium-ion battery explorations.Advancements in sodium-ion batteries have been witnessed in terms of superior electrochemical performance and broader application scenarios.Here,the strategies adopted to optimize the battery components(cathode,anode,electrolyte,separator,binder,current collector,etc.)and the cost,safety,and commercialization issues in sodium-ion batteries are summarized and discussed.Based on these optimization strategies,assembly of functional(flexible,stretchable,self-healable,and self-chargeable)and integrated sodium-ion batteries(−actuators,−sensors,electrochromic,etc.)have been realized.Despite these achievements,challenges including energy density,scalability,trade-off between energy density and functionality,cost,etc.are to be addressed for sodium-ion battery commercialization.This review aims at providing an overview of the up-to-date achievements in sodium-ion batteries and serves to inspire more efforts in designing upgraded sodium-ion batteries.展开更多
There has been increasing demand for high-energy density and longcycle life rechargeable batteries to satisfy the ever-growing requirements for nextgeneration energy storage systems.Among all available candidates,dual...There has been increasing demand for high-energy density and longcycle life rechargeable batteries to satisfy the ever-growing requirements for nextgeneration energy storage systems.Among all available candidates,dual-ion batteries(DIBs)have drawn tremendous attention in the past few years from both academic and industrial battery communities because of their fascinating advantages of high working voltage,excellent safety,and environmental friendliness.However,the dynamic imbalance between the electrodes and the mismatch of traditional electrolyte systems remain elusive.To fully employ the advantages of DIBs,the overall optimization of anode materials,cathode materials,and compatible electrolyte systems is urgently needed.Here,we review the development history and the reaction mechanisms involved in DIBs.Afterward,the optimization strategies toward DIB materials and electrolytes are highlighted.In addition,their energy-related applications are also provided.Lastly,the research challenges and possible development directions of DIBs are outlined.展开更多
In coronavirus disease 2019(COVID-19),medical imaging plays an essential role in the diagnosis,management and disease progression surveillance.Chest radiography and computed tomography are commonly used imaging techni...In coronavirus disease 2019(COVID-19),medical imaging plays an essential role in the diagnosis,management and disease progression surveillance.Chest radiography and computed tomography are commonly used imaging techniques globally during this pandemic.As the pandemic continues to unfold,many healthcare systems worldwide struggle to balance the heavy strain due to overwhelming demand for healthcare resources.Changes are required across the entire healthcare system and medical imaging departments are no exception.The COVID-19 pandemic had a devastating impact on medical imaging practices.It is now time to pay further attention to the profound challenges of COVID-19 on medical imaging services and develop effective strategies to get ahead of the crisis.Additionally,preparation for operations and survival in the post-pandemic future are necessary considerations.This review aims to comprehensively examine the challenges and optimization of delivering medical imaging services in relation to the current COVID-19 global pandemic,including the role of medical imaging during these challenging times and potential future directions post-COVID-19.展开更多
Commercial behavior in towns and cities is mainly divided into formal and informal behavior.Rapid urbanization has enabled formal commerce to develop more and more perfectly in towns,basically meeting the living needs...Commercial behavior in towns and cities is mainly divided into formal and informal behavior.Rapid urbanization has enabled formal commerce to develop more and more perfectly in towns,basically meeting the living needs of residents. However, because of problems such as urban history and management mechanism, informal commercial behavior formed by floating stallholders and other employed people is widespread in towns. Due to the characteristics of instability, flexibility and richness,informal commerce has gradually developed into an important business to attract residents and tourists. In this paper, the general characteristics of informal commercial behavior in towns, the characteristics of the urban public space bearing this kind of commerce, and residents' demand for informal commercial space were summarized, and then the optimization strategies of this kind of public space were put forward to help towns make full use of their scattered space, create diversified commercial places, and add vitality to urban space while providing residents and tourists with daily life needs and convenience.展开更多
With the rapid development of urban commercial complex in China,its roof garden becomes an important container for outdoor consumption and activities as the link between itself and the city,and more and more attention...With the rapid development of urban commercial complex in China,its roof garden becomes an important container for outdoor consumption and activities as the link between itself and the city,and more and more attention has been paid to its attractiveness.First,roof garden of Handan Meilecheng is taken as research object,and quantitative method of spatial attractiveness is established based on the number of spontaneous and chain activities and their intensity score.On this basis,data are collected via field investigation,and spatial attractiveness of roof garden of Meilecheng is quantified,and its distribution characteristics are summarized.Second,the cause of the characteristics formation is explained from the perspective of built environment elements.Finally,corresponding optimization strategies are proposed from four aspects:setting of landscape platform,increase of interest in sculpture sketches,design of space boundary,and improvement of spatial accessibility,which could provide reference for planning,design and transformation of roof garden of commercial complex in the future.展开更多
4 elderly care service stations in Zhanlan Road Street,Xicheng District,Beijing are selected,and questionnaires are designed and distributed to the surrounding elderly population to understand their needs and satisfac...4 elderly care service stations in Zhanlan Road Street,Xicheng District,Beijing are selected,and questionnaires are designed and distributed to the surrounding elderly population to understand their needs and satisfaction with the station environment.By observing elderly care service stations on site,the characteristics,obstacles,and shortcomings of the environment are recorded,and relevant data are collected and analyzed,such as the characteristics of the elderly population being interviewed,the planning and design data of the station environment,and the distribution of service facilities.The overall characteristics of the spatial environment of elderly care stations are summarized,and renovation measures and optimization suggestions are provided for the current shortcomings,thereby providing some basis for the spatial design of community elderly care service stations in the future.展开更多
The industrial heritage creative industrial park in Qingdao,which has been renovated and put to use,was selected as the research subject.Based on the data collected via the questionnaire survey and fuzzy comprehensive...The industrial heritage creative industrial park in Qingdao,which has been renovated and put to use,was selected as the research subject.Based on the data collected via the questionnaire survey and fuzzy comprehensive evaluation,the hierarchical analysis method was used to calculate the weights of indicators at each level and construct a comprehensive satisfaction evaluation model,aiming to ensure a comprehensive satisfaction evaluation and analysis of the use effect of industrial heritage following renovation and utilization.Based on the evaluation results,the existing problems in the renovation and reuse of industrial heritage in Qingdao were analyzed,and subsequently corresponding optimization strategies were proposed.展开更多
Based on the Party's school sports development concept and in view of the practical problems of sports practice faced by the schools,this study uses literature research,logical reasoning,expert interviews,and othe...Based on the Party's school sports development concept and in view of the practical problems of sports practice faced by the schools,this study uses literature research,logical reasoning,expert interviews,and other research methods to review,analyze,as well as reflect on the current development of physical education curriculum existing in schools and propose feasible optimization strategies in line with the“core qualities of sports disciplines”training.展开更多
Blended teaching has emerged as a prominent subject in the recent reform and innovation of higher education.It has become imperative and guiding for colleges and universities to embrace a mixed teaching approach that ...Blended teaching has emerged as a prominent subject in the recent reform and innovation of higher education.It has become imperative and guiding for colleges and universities to embrace a mixed teaching approach that aligns with the evolving needs of education and teaching in the new era.This paper aims to provide a comprehensive overview of the research status surrounding blended teaching,encompassing fundamental issues,teaching design,practical guidance,teaching effectiveness,and evaluation.By critically examining the current challenges associated with blended teaching,this study proposes optimization strategies including enhancing student participation and interaction,promoting deep learning,improving teachers’preparedness,teaching technologies,and curriculum design capabilities,strengthening top-level design,and perfecting evaluation and incentive mechanisms.These strategies provide new directions for the reform of blended teaching.展开更多
The issues concerning agriculture, countryside and farmers have always been the fundamental issues concerning the national economy and the people's livelihood. In the new era of socialist development, they are sti...The issues concerning agriculture, countryside and farmers have always been the fundamental issues concerning the national economy and the people's livelihood. In the new era of socialist development, they are still receiving extensive attention from national leaders and various sectors of society. Land transfer refers to the transfer of the right of management and use of land by the farmers with the right of contracted management of land. The objects of transfer are not limited to other farmers, but are more transferred to some economic organizations engaged in agricultural production. Land transfer is an important national agricultural strategy that transfers land use rights and can help increase farmers' income and improve people's livelihood. It has received strong support and support from national policies and has also achieved significant achievements. Most provinces, cities and counties in our country have formulated policies related to land transfer, attach great importance to the specific implementation and implementation of land transfer policies, and give certain financial support to enterprises and units related to land transfer, which shows the support and advocacy of the state and the government for land transfer from the policy level. The land transfer policy can effectively attract foreign agricultural enterprises or local large agricultural households to carry out large-scale intensive management, establish family farms, specialized cooperative organizations and other important large-scale business entities, effectively utilize and develop idle land in rural areas, and add a significant amount of income to improve the living standards of farmers. Therefore, this paper focuses on the impact of land on rural economic development.展开更多
In the process of primary school mathematics teaching, the applied problem is a difficult problem faced by students. Under the guidance of the concept of quality education, primary school mathematics teaching activiti...In the process of primary school mathematics teaching, the applied problem is a difficult problem faced by students. Under the guidance of the concept of quality education, primary school mathematics teaching activities should need to cultivate students' practical ability of mathematical knowledge, which is mainly reflected in the practice of applied questions. At present, there are two different differences in the math applied questions learning, some students can skillfully answer the applied questions skillfully, and get good results in the math examination. However, for some students, the answer of math applied questions is very difficult, directly affecting the students' math performance. The main reason for the differentiation is that there are some problems in the current teaching practice of primary school mathematics applied problem, which directly affect the applied problem teaching effect and the classroom teaching quality. This paper takes the problems existing in the current primary school applied problem teaching practice as the starting point, combined with students 'actual learning rules of students, and puts forward the paths of primary school mathematics applied problem teaching, so as to achieve the new curriculum reform goal of comprehensively improving students' ability of applied problem solving ability.展开更多
At present, buildings all over the world are developing towards low-energy buildings, near zero energy buildings and green buildings. With the continuous development of urban construction in China, the energy consumpt...At present, buildings all over the world are developing towards low-energy buildings, near zero energy buildings and green buildings. With the continuous development of urban construction in China, the energy consumption of residential buildings in the process of construction and use has increased significantly. The peak power consumption in summer in Anhui Province last year has reflected the situation of energy shortage. We must pay attention to and actively carry out the energy efficiency improvement of residential buildings. Therefore, this paper will take building energy-saving design as the topic for analysis and discussion, explore its specific application in architectural design on the basis of fully recognizing the importance of energy-saving design concept, and discuss the problems and optimization strategies in residential building energy-saving design.展开更多
基金partly supported by the National Natural Science Foundation of China(Grant No.52272225).
文摘Na_(3)V_(2)(PO_(4))_(3)(NVP)has garnered great attentions as a prospective cathode material for sodium-ion batteries(SIBs)by virtue of its decent theoretical capacity,superior ion conductivity and high structural stability.However,the inherently poor electronic conductivity and sluggish sodium-ion diffusion kinetics of NVP material give rise to inferior rate performance and unsatisfactory energy density,which strictly confine its further application in SIBs.Thus,it is of significance to boost the sodium storage performance of NVP cathode material.Up to now,many methods have been developed to optimize the electrochemical performance of NVP cathode material.In this review,the latest advances in optimization strategies for improving the electrochemical performance of NVP cathode material are well summarized and discussed,including carbon coating or modification,foreign-ion doping or substitution and nanostructure and morphology design.The foreign-ion doping or substitution is highlighted,involving Na,V,and PO_(4)^(3−)sites,which include single-site doping,multiple-site doping,single-ion doping,multiple-ion doping and so on.Furthermore,the challenges and prospects of high-performance NVP cathode material are also put forward.It is believed that this review can provide a useful reference for designing and developing high-performance NVP cathode material toward the large-scale application in SIBs.
基金support from the Technology Project of the State Grid Zhejiang Electric Power Company,Ltd.(No.B311DS230005).
文摘Electrocatalytic carbon dioxide reduction(ECO_(2)RR)serves as a promising approach for converting CO_(2)into energy-dense fuels and high-value chemicals,garnering substantial interest across academic and industrial sectors.Copper(Cu)-based electrocatalysts are widely acknowledged as highly effective for ECO_(2)RR,primarily due to their optimal adsorption energy for*CO.Nonetheless,significant challenges remain to be addressed in transitioning Cu-based catalysts from research settings to industrial applications,including the low stability and unavoidable side reactions.This article aims to i)systematically examine the deactivation mechanisms of Cu-based catalysts,including changes in valence states,surface poisoning,and restructuring(agglomeration,dissolution,Ostwald ripening);ii)provide a timely overview of cutting-edge strategies to enhance the stability of Cu-based catalysts,such as ligand effects,heteroatom doping,support optimization,size effect,and restructuring;iii)highlight critical areas and prospective development directions that warrant further exploration to expedite the industrial adoption of Cu-based catalysts in ECO_(2)RR.
文摘With the rapid development of electronic information engineering,high-speed digital circuits have been increasingly widely applied in various fields.In high-speed digital circuits,signal integrity is prone to interference from various external factors,leading to issues such as signal distortion or degradation of system performance.Based on this,this paper conducts research on the optimization strategies for signal integrity of high-speed digital circuits in electronic information engineering.It deeply analyzes the importance of high-speed digital circuits,elaborates on the challenges they face and the specific manifestations of signal integrity issues,and proposes a series of optimization strategies in electronic information engineering.The aim is to improve the signal integrity of highspeed digital circuits and provide theoretical support and practical guidance for the development of related fields.
文摘The rapid development of artificial intelligence(AI)technology in today’s society has brought varying degrees of influence to various industries and fields,and this transformation is also playing a profound role in the field of education.This paper intends to analyze the social background,cultural background,and policy background of introducing AI technology into the primary school music education system,deeply explore the important value and practical path of applying AI technology in the field of primary school music education,and provide corresponding optimization strategies for teaching,with a view to providing some theoretical references for promoting the in-depth integration of AI and primary school music education.
文摘This article focuses on the challenges of rural economic development under the strategy of rural revitalization,and deeply analyzes the current situation of rural economic development.Research has found that although the rural revitalization strategy has achieved significant results in improving residents’quality of life,promoting agricultural modernization,it still faces challenges such as severe loss of human resources,insufficient agricultural technological innovation,and backward infrastructure construction.In response to these challenges,this paper proposes optimization strategies from three aspects:strengthening rural education and talent team construction,promoting agricultural technology innovation and achievement transformation,and increasing investment in rural infrastructure construction.
文摘The construction of island power grids is a systematic engineering task.To ensure the safe operation of power grid systems,optimizing the line layout of island power grids is crucial.Especially in the current context of large-scale distributed renewable energy integration into the power grid,conventional island power grid line layouts can no longer meet actual demands.It is necessary to combine the operational characteristics of island power systems and historical load data to perform load forecasting,thereby generating power grid line layout paths.This article focuses on large-scale distributed renewable energy integration,summarizing optimization strategies for island power grid line layouts,and providing a solid guarantee for the safe and stable operation of island power systems.
文摘A systematic analysis is performed to assess the current situation of transportation and tourism integration in 20 districts and counties located along National Highway 310(Gansu-Qinghai section),and optimization strategies are explored based on the findings of this analysis.The findings indicate a pressing necessity for further improvement in the practice of transportation and tourism integration in both Gansu and Qinghai provinces.Based on this foundation,a development framework for transportation and tourism integration has been established.This framework simulates a“fast-forward-slow-travel”system in which tourists commence their journey from the origin,traverse through core,secondary,and subsidiary tourist destinations,and ultimately reach the core,secondary,and subsidiary attractions.Furthermore,this study presents optimization recommendations for the integrated development of regional transportation and tourism along the designated route.These suggestions encompass the establishment and optimization of facilities and service points,the planning and design of tourism routes,the promotion of regional synergistic development,the construction of intelligent tourism,and the implementation of green tourism pathways.
基金supported by the National Natural Science Foundation of China(No.52202320)the Fundamental Research Funds for the Central Universities(No.862201013153)+2 种基金the Shandong Excel ent Young Scientists Fund Program(Overseas)(2023HWYQ-060)the Ministry of Education Ac RF Tier 1 Award RT15/20,SingaporeD.H.C.C.acknowledges the funding support from NUS R284000-227-114
文摘Exploration of alternative energy storage systems has been more than necessary in view of the supply risks haunting lithium-ion batteries.Among various alternative electrochemical energy storage devices,sodium-ion battery outstands with advantages of cost-effectiveness and comparable energy density with lithium-ion batteries.Thanks to the similar electrochemical mechanism,the research and development of lithium-ion batteries have forged a solid foundation for sodium-ion battery explorations.Advancements in sodium-ion batteries have been witnessed in terms of superior electrochemical performance and broader application scenarios.Here,the strategies adopted to optimize the battery components(cathode,anode,electrolyte,separator,binder,current collector,etc.)and the cost,safety,and commercialization issues in sodium-ion batteries are summarized and discussed.Based on these optimization strategies,assembly of functional(flexible,stretchable,self-healable,and self-chargeable)and integrated sodium-ion batteries(−actuators,−sensors,electrochromic,etc.)have been realized.Despite these achievements,challenges including energy density,scalability,trade-off between energy density and functionality,cost,etc.are to be addressed for sodium-ion battery commercialization.This review aims at providing an overview of the up-to-date achievements in sodium-ion batteries and serves to inspire more efforts in designing upgraded sodium-ion batteries.
基金support from the National Key R&D Program of China(2022YFB2402600)National Natural Science Foundation of China(52125105,51972329)+2 种基金NSFC/RGC Joint Research Scheme(Project No:N_CityU104/20 and 52061160484)Shenzhen Science and Technology Planning Project(JCYJ20200109115624923,JSGG20220831104004008)Science and Technology Planning Project of Guangdong Province(2019TX05L389).
文摘There has been increasing demand for high-energy density and longcycle life rechargeable batteries to satisfy the ever-growing requirements for nextgeneration energy storage systems.Among all available candidates,dual-ion batteries(DIBs)have drawn tremendous attention in the past few years from both academic and industrial battery communities because of their fascinating advantages of high working voltage,excellent safety,and environmental friendliness.However,the dynamic imbalance between the electrodes and the mismatch of traditional electrolyte systems remain elusive.To fully employ the advantages of DIBs,the overall optimization of anode materials,cathode materials,and compatible electrolyte systems is urgently needed.Here,we review the development history and the reaction mechanisms involved in DIBs.Afterward,the optimization strategies toward DIB materials and electrolytes are highlighted.In addition,their energy-related applications are also provided.Lastly,the research challenges and possible development directions of DIBs are outlined.
文摘In coronavirus disease 2019(COVID-19),medical imaging plays an essential role in the diagnosis,management and disease progression surveillance.Chest radiography and computed tomography are commonly used imaging techniques globally during this pandemic.As the pandemic continues to unfold,many healthcare systems worldwide struggle to balance the heavy strain due to overwhelming demand for healthcare resources.Changes are required across the entire healthcare system and medical imaging departments are no exception.The COVID-19 pandemic had a devastating impact on medical imaging practices.It is now time to pay further attention to the profound challenges of COVID-19 on medical imaging services and develop effective strategies to get ahead of the crisis.Additionally,preparation for operations and survival in the post-pandemic future are necessary considerations.This review aims to comprehensively examine the challenges and optimization of delivering medical imaging services in relation to the current COVID-19 global pandemic,including the role of medical imaging during these challenging times and potential future directions post-COVID-19.
基金Supported by National Natural Science Foundation of China (51768026)Humanities and Social Sciences Project of Colleges and Universities in Jiangxi Province,China (YC2021-S225)。
文摘Commercial behavior in towns and cities is mainly divided into formal and informal behavior.Rapid urbanization has enabled formal commerce to develop more and more perfectly in towns,basically meeting the living needs of residents. However, because of problems such as urban history and management mechanism, informal commercial behavior formed by floating stallholders and other employed people is widespread in towns. Due to the characteristics of instability, flexibility and richness,informal commerce has gradually developed into an important business to attract residents and tourists. In this paper, the general characteristics of informal commercial behavior in towns, the characteristics of the urban public space bearing this kind of commerce, and residents' demand for informal commercial space were summarized, and then the optimization strategies of this kind of public space were put forward to help towns make full use of their scattered space, create diversified commercial places, and add vitality to urban space while providing residents and tourists with daily life needs and convenience.
基金Sponsored by Key Projects of Humanities and Social Sciences in Colleges and Universities of Hebei Province (SD201075)Research and Practice Project of Higher Education Teaching Reform in Hebei Province (2019GJJG249)Graduate Demonstration Course Project in Hebei Province (KCJS2019069)。
文摘With the rapid development of urban commercial complex in China,its roof garden becomes an important container for outdoor consumption and activities as the link between itself and the city,and more and more attention has been paid to its attractiveness.First,roof garden of Handan Meilecheng is taken as research object,and quantitative method of spatial attractiveness is established based on the number of spontaneous and chain activities and their intensity score.On this basis,data are collected via field investigation,and spatial attractiveness of roof garden of Meilecheng is quantified,and its distribution characteristics are summarized.Second,the cause of the characteristics formation is explained from the perspective of built environment elements.Finally,corresponding optimization strategies are proposed from four aspects:setting of landscape platform,increase of interest in sculpture sketches,design of space boundary,and improvement of spatial accessibility,which could provide reference for planning,design and transformation of roof garden of commercial complex in the future.
基金Sponsored by the National Natural Science Foundation of China(51708004)Beijing Youth Teaching Master Team Construction Project(108051360023XN261)Yuyou Talent Training Program of North China University of Technology(215051360020XN160/009).
文摘4 elderly care service stations in Zhanlan Road Street,Xicheng District,Beijing are selected,and questionnaires are designed and distributed to the surrounding elderly population to understand their needs and satisfaction with the station environment.By observing elderly care service stations on site,the characteristics,obstacles,and shortcomings of the environment are recorded,and relevant data are collected and analyzed,such as the characteristics of the elderly population being interviewed,the planning and design data of the station environment,and the distribution of service facilities.The overall characteristics of the spatial environment of elderly care stations are summarized,and renovation measures and optimization suggestions are provided for the current shortcomings,thereby providing some basis for the spatial design of community elderly care service stations in the future.
文摘The industrial heritage creative industrial park in Qingdao,which has been renovated and put to use,was selected as the research subject.Based on the data collected via the questionnaire survey and fuzzy comprehensive evaluation,the hierarchical analysis method was used to calculate the weights of indicators at each level and construct a comprehensive satisfaction evaluation model,aiming to ensure a comprehensive satisfaction evaluation and analysis of the use effect of industrial heritage following renovation and utilization.Based on the evaluation results,the existing problems in the renovation and reuse of industrial heritage in Qingdao were analyzed,and subsequently corresponding optimization strategies were proposed.
基金the 2021 Mudanjiang Normal University Graduate Science and Technology Innovation Key Projects,2021 Mudanjiang Normal University Graduate Science and Technology Innovation General Items(Number:Kjcx2021-026mdjnu,Kjcx2021-126mdjnu).
文摘Based on the Party's school sports development concept and in view of the practical problems of sports practice faced by the schools,this study uses literature research,logical reasoning,expert interviews,and other research methods to review,analyze,as well as reflect on the current development of physical education curriculum existing in schools and propose feasible optimization strategies in line with the“core qualities of sports disciplines”training.
基金The 2020 Guangxi Higher Education Undergraduate Teaching Reform Project“Research and Practice of Blended Course Evaluation System Based on College Students’Learning Effect”(Project number:2020JGZ116)。
文摘Blended teaching has emerged as a prominent subject in the recent reform and innovation of higher education.It has become imperative and guiding for colleges and universities to embrace a mixed teaching approach that aligns with the evolving needs of education and teaching in the new era.This paper aims to provide a comprehensive overview of the research status surrounding blended teaching,encompassing fundamental issues,teaching design,practical guidance,teaching effectiveness,and evaluation.By critically examining the current challenges associated with blended teaching,this study proposes optimization strategies including enhancing student participation and interaction,promoting deep learning,improving teachers’preparedness,teaching technologies,and curriculum design capabilities,strengthening top-level design,and perfecting evaluation and incentive mechanisms.These strategies provide new directions for the reform of blended teaching.
文摘The issues concerning agriculture, countryside and farmers have always been the fundamental issues concerning the national economy and the people's livelihood. In the new era of socialist development, they are still receiving extensive attention from national leaders and various sectors of society. Land transfer refers to the transfer of the right of management and use of land by the farmers with the right of contracted management of land. The objects of transfer are not limited to other farmers, but are more transferred to some economic organizations engaged in agricultural production. Land transfer is an important national agricultural strategy that transfers land use rights and can help increase farmers' income and improve people's livelihood. It has received strong support and support from national policies and has also achieved significant achievements. Most provinces, cities and counties in our country have formulated policies related to land transfer, attach great importance to the specific implementation and implementation of land transfer policies, and give certain financial support to enterprises and units related to land transfer, which shows the support and advocacy of the state and the government for land transfer from the policy level. The land transfer policy can effectively attract foreign agricultural enterprises or local large agricultural households to carry out large-scale intensive management, establish family farms, specialized cooperative organizations and other important large-scale business entities, effectively utilize and develop idle land in rural areas, and add a significant amount of income to improve the living standards of farmers. Therefore, this paper focuses on the impact of land on rural economic development.
文摘In the process of primary school mathematics teaching, the applied problem is a difficult problem faced by students. Under the guidance of the concept of quality education, primary school mathematics teaching activities should need to cultivate students' practical ability of mathematical knowledge, which is mainly reflected in the practice of applied questions. At present, there are two different differences in the math applied questions learning, some students can skillfully answer the applied questions skillfully, and get good results in the math examination. However, for some students, the answer of math applied questions is very difficult, directly affecting the students' math performance. The main reason for the differentiation is that there are some problems in the current teaching practice of primary school mathematics applied problem, which directly affect the applied problem teaching effect and the classroom teaching quality. This paper takes the problems existing in the current primary school applied problem teaching practice as the starting point, combined with students 'actual learning rules of students, and puts forward the paths of primary school mathematics applied problem teaching, so as to achieve the new curriculum reform goal of comprehensively improving students' ability of applied problem solving ability.
文摘At present, buildings all over the world are developing towards low-energy buildings, near zero energy buildings and green buildings. With the continuous development of urban construction in China, the energy consumption of residential buildings in the process of construction and use has increased significantly. The peak power consumption in summer in Anhui Province last year has reflected the situation of energy shortage. We must pay attention to and actively carry out the energy efficiency improvement of residential buildings. Therefore, this paper will take building energy-saving design as the topic for analysis and discussion, explore its specific application in architectural design on the basis of fully recognizing the importance of energy-saving design concept, and discuss the problems and optimization strategies in residential building energy-saving design.
