The energy-saving renovation of existing residential buildings is a crucial measure to achieve the strategic goal of energy conservation and emission reduction in China and build ecologically livable cities.This artic...The energy-saving renovation of existing residential buildings is a crucial measure to achieve the strategic goal of energy conservation and emission reduction in China and build ecologically livable cities.This article focuses on the perspective of subject behavior,starting from analyzing the current situation and difficulties of the operation of the energy-saving renovation market for existing residential buildings in China,drawing on the practical experience of the operation of the existing residential building energy-saving renovation market abroad.Based on principles such as systematicity,humanization,feasibility,and sustainability,the article constructs an operation optimization system of the existing residential building energy-saving renovation market from the perspective of subject behavior.In order to provide a reference for the healthy and orderly operation of the existing residential building energy-saving renovation market,this paper proposes implementation strategies for optimizing the operation of the existing residential building energy-saving renovation market.Suggestions are proposed from four aspects:optimizing the market environment,innovating the financing model,building the information sharing platform,and utilizing the synergies of the main subjects.展开更多
The application and development of a wide-area measurement system(WAMS)has enabled many applications and led to several requirements based on dynamic measurement data.Such data are transmitted as big data information ...The application and development of a wide-area measurement system(WAMS)has enabled many applications and led to several requirements based on dynamic measurement data.Such data are transmitted as big data information flow.To ensure effective transmission of wide-frequency electrical information by the communication protocol of a WAMS,this study performs real-time traffic monitoring and analysis of the data network of a power information system,and establishes corresponding network optimization strategies to solve existing transmission problems.This study utilizes the traffic analysis results obtained using the current real-time dynamic monitoring system to design an optimization strategy,covering the optimization in three progressive levels:the underlying communication protocol,source data,and transmission process.Optimization of the system structure and scheduling optimization of data information are validated to be feasible and practical via tests.展开更多
In this paper, a hybrid automatic optimization strategy is proposed for the design of underwater robot lines. Isight is introduced as an integration platform. The construction of this platform is based on the user pro...In this paper, a hybrid automatic optimization strategy is proposed for the design of underwater robot lines. Isight is introduced as an integration platform. The construction of this platform is based on the user programming and several commercial software including UG6.0, GAMBIT2.4.6 and FLUENT12.0. An intelligent parameter optimization method, the particle swarm optimization, is incorporated into the platform. To verify the strategy proposed, a simulation is conducted on the underwater robot model 5470, which originates from the DTRC SUBOFF project. With the automatic optimization platform, the minimal resistance is taken as the optimization goal;the wet surface area as the constraint condition; the length of the fore-body, maximum body radius and after-body＇s minimum radius as the design variables. With the CFD calculation, the RANS equations and the standard turbulence model are used for direct numerical simulation. By analyses of the simulation results, it is concluded that the platform is of high efficiency and feasibility. Through the platform, a variety of schemes for the design of the lines are generated and the optimal solution is achieved. The combination of the intelligent optimization algorithm and the numerical simulation ensures a global optimal solution and improves the efficiency of the searching solutions.展开更多
Recent studies of the space debris environment in Low Earth Orbit(LEO)have shown that the critical density of space debris has been reached in certain regions.The Active Debris Removal(ADR)mission,to mitigate the spac...Recent studies of the space debris environment in Low Earth Orbit(LEO)have shown that the critical density of space debris has been reached in certain regions.The Active Debris Removal(ADR)mission,to mitigate the space debris density and stabilize the space debris environment,has been considered as a most effective method.In this paper,a novel two-level optimization strategy for multi-debris removal mission in LEO is proposed,which includes the low-level and high-level optimization process.To improve the overall performance of the multi-debris active removal mission and obtain multiple Pareto-optimal solutions,the ADR mission is seen as a Time-Dependant Traveling Salesman Problem(TDTSP)with two objective functions to minimize the total mission duration and the total propellant consumption.The problem includes the sequence optimization to determine the sequence of removal of space debris and the transferring optimization to define the orbital maneuvers.Two optimization models for the two-level optimization strategy are built in solving the multi-debris removal mission,and the optimal Pareto solution is successfully obtained by using the non-dominated sorting genetic algorithm II(NSGA-II).Two test cases are presented,which show that the low level optimization strategy can successfully obtain the optimal sequences and the initial solution of the ADR mission and the high level optimization strategy can efficiently and robustly find the feasible optimal solution for long duration perturbed rendezvous problem.展开更多
A novel joint optimization strategy for the secondary user( SU) was proposed to consider the short-term and long-term video transmissions over distributed cognitive radio networks( DCRNs).Since the long-term video tra...A novel joint optimization strategy for the secondary user( SU) was proposed to consider the short-term and long-term video transmissions over distributed cognitive radio networks( DCRNs).Since the long-term video transmission consisted of a series of shortterm transmissions, the optimization problem in the video transmission was a composite optimization process. Firstly,considering some factors like primary user's( PU's) collision limitations,non-synchronization between SU and PU,and SU's limited buffer size, the short-term optimization problem was formulated as a mixed integer non-linear program( MINLP) to minimize the block probability of video packets. Secondly,combining the minimum packet block probability obtained in shortterm optimization and SU's constraint on hardware complexity,the partially observable Markov decision process( POMDP) framework was proposed to learn PU's statistic information over DCRNs.Moreover,based on the proposed framework,joint optimization strategy was designed to obtain the minimum packet loss rate in long-term video transmission. Numerical simulation results were provided to demonstrate validity of our strategies.展开更多
At present,the cruise industry has become the most rapidly developing industry in the modem tourism industry. The development of Chinese cruise tourism is in the ascendant, and the Chinese cruise lines are also develo...At present,the cruise industry has become the most rapidly developing industry in the modem tourism industry. The development of Chinese cruise tourism is in the ascendant, and the Chinese cruise lines are also developing and perfecting.Cruise line is an important guarantee for the sustained and healthy development of cruise tourism industry. Based on the theme of China＇s coastal cruise routes, this paper analyzes the layout of the global and Chinese Cruise routes, probes into the development of the cruise and cruise routes in China＇s domestic coastal regions, and on this basis it analyzes the current problems of the development of the domestic coastal cruise lines and puts forward some pertinent countermeasures and suggestions for the problems appearing. The purpose of this study is to provide some help for the development of the cruise industry in China, so as to open up the road for the development of the cruise tourism which is suitable for China＇s national conditions and vigorously promote the development of the cruise industry in China.展开更多
After entering the new normal of economy, although the economy is in a state of continuous development, with the deepening of the reform of the market economy system, the whole market environment has become more and m...After entering the new normal of economy, although the economy is in a state of continuous development, with the deepening of the reform of the market economy system, the whole market environment has become more and more severe, and many companies are submerged in the wave of market economy due to poor management. Under such a background, the group companies are also facing increasing pressure on business development. In order to ensure the stability and sustainability of development and improve the profit level, it is necessary to do a good job in scientific control and effective intervention on the financial management activities of subsidiaries, so as to reduce financial risks, achieve profit targets and achieve good synergies. The financial management of a group company to a subsidiary company should proceed from the actual situation, objectively analyze the actual problems existing in the current financial management, and then determine the corresponding financial control measures, so as to enhance the overall competitiveness of the group company, strengthen its overall strength and adapt to the increasingly complex development environment.展开更多
Under the condition of modern society, with the development of our country's economy, the civil servants have a strong growth and development trend, which largely depends on the distribution. Finance and the peopl...Under the condition of modern society, with the development of our country's economy, the civil servants have a strong growth and development trend, which largely depends on the distribution. Finance and the people are important sources of budget allocation. They have sufficient economic support to ensure the normal operation of our financial institutions. The institutions must operate normally. Therefore, the people are called civil servants. At the same time, it should be pointed out that state-owned enterprises are generally a relatively special institutional unit and cannot fully disclose their information to other market entities in the course of their activities, including: in these countries, due to information security and social stability, social media cannot control the operation of state institutions, and as time goes on, they have become the target of criticism. Therefore, it is necessary to carry out effective internal and office management, analysis and continuous improvement on relevant management issues, in order to enable the state-owned enterprises to give full play to their role and continuously pursue serving the people, so as to make our country's economy continue to prosper.展开更多
Paper books and documents are the main media of information service in most university libraries.In order to study the main reasons for the decline of the utilization rate of paper books in university libraries,this p...Paper books and documents are the main media of information service in most university libraries.In order to study the main reasons for the decline of the utilization rate of paper books in university libraries,this paper takes a well-known university library in China as an example,discusses the current situation of its low utilization rate of paper books and the reasons for the problems,and puts forward relevant optimization strategies,so as to promote the improvement of the construction quality of university libraries in China.展开更多
With the rapid development of the real estate industry, real estate management has become one of the main kinetic energy of China's economic growth. Especially in recent years, people's demand for housing cont...With the rapid development of the real estate industry, real estate management has become one of the main kinetic energy of China's economic growth. Especially in recent years, people's demand for housing continues to rise, making the real estate industry gradually become one of the pillars of China's economy. However, the housing economy is closely related to people's life, which directly affects people's normal life and social stability. If the development process of real estate economy is irrational or reduced to speculative products, it will directly endanger the healthy development of the real estate industry, and it is not conducive to the steady development of China's economy and society.展开更多
In recent years, with the continuous growth of social and economic level, no matter the production of all walks of life or people's daily life for the computer demand has been increasing, in this context, the powe...In recent years, with the continuous growth of social and economic level, no matter the production of all walks of life or people's daily life for the computer demand has been increasing, in this context, the power plant to bear the production pressure is more difficult. Steam turbine is one of the important production equipment in power plant, its safe and stable operation is related to the quality and efficiency of power plant production. Based on this, this paper focuses on the analysis of the operation optimization strategy of steam turbines in the process of centralized control operation of power plants, aiming to extend the service life of steam turbines, improve its production and operation efficiency, and then help the growth of centralized control operation level of power plants, and greatly improve the power generation efficiency and safety.展开更多
With the improvement of social and economic development level, China's construction industry is also developing. Therefore, there are many new problems in its construction site management. These problems will seri...With the improvement of social and economic development level, China's construction industry is also developing. Therefore, there are many new problems in its construction site management. These problems will seriously affect the smooth implementation of the whole construction project. In addition, it may cause potential personal safety hazards. Therefore, it is necessary to optimize these construction site managements. Comprehensively analyze all links in the construction process, and then continuously promote the smooth implementation of construction projects in China.展开更多
Peoples lifestyle is different from the past. Now their life and work are in a state of high efficiency and rapid change. Therefore, if the construction industry wants to attract the attention of the market, it must f...Peoples lifestyle is different from the past. Now their life and work are in a state of high efficiency and rapid change. Therefore, if the construction industry wants to attract the attention of the market, it must find support points in the industry, innovate the construction mode of construction projects, and roughly adjust the original construction site to assembly projects. This is because there are many shortcomings in site construction, such as high cost, heavy workload, selection of decorative materials, good decorative effect and long construction period. Prefabricated buildings will become simple and convenient. It is a new industry in construction engineering. At present, the construction industry at home and abroad will focus on prefabricated buildings. Therefore, it is particularly important to solve the technical problems of precast structure construction. Only by improving the level of construction technology can precast works be flexibly applied in the construction industry.展开更多
At present, heavy metal pollution is one of the main reasons for the destruction of the ecological environment, among which heavy metals discharged from industrial production and chemical manufacturing still have grea...At present, heavy metal pollution is one of the main reasons for the destruction of the ecological environment, among which heavy metals discharged from industrial production and chemical manufacturing still have great hidden dangers, which have a great impact on the ecological environment. In addition, due to a series of reasons, such as imperfect supervision system, there are still many shortcomings and problems in the heavy metal treatment work, which also hinders the heavy metal environmental treatment work in China. In view of the above problems, relevant departments should formulate strict governance system, strengthen the supervision of enterprise production, and put the governance responsibility into the main person in charge or individual of the enterprise, so as to promote the effective completion of heavy metal environmental governance.展开更多
In the process of education and teaching, the relationship between teachers and students is the most important one, which includes their position, role and treatment, mutual support and interdependence. In the era of ...In the process of education and teaching, the relationship between teachers and students is the most important one, which includes their position, role and treatment, mutual support and interdependence. In the era of scarce educational resources, teachers are the owners of knowledge. However, when the emergence of the Internet puts a huge amount of knowledge in front of people, what is scarce in education is no longer the amount of knowledge, but the selection, carding, promotion and internalization of knowledge. The traditional teaching method is transforming into learner centered individualized teaching and learning. In the process of teaching and learning, the proportion and focus of knowledge transfer and knowledge internalization have also changed. Under the new environment, teachers need to change the habits of teaching and learning for thousands of years, and carry out teaching in innovative mode through new technical means, so as to achieve higher results. However, in the new technology environment, if there is no complete teaching logic and the organic connection and cooperation between man and machine, classroom teaching will not present an orderly and efficient situation. If there is no good teaching design and the new educational technology is used freely, the teaching effect may not be as good as the traditional blackboard teaching mode.展开更多
With the advancement of the new medical reform,public hospitals face numerous challenges and opportunities,making the optimization of human resource allocation a critical priority.This paper analyzes the requirements ...With the advancement of the new medical reform,public hospitals face numerous challenges and opportunities,making the optimization of human resource allocation a critical priority.This paper analyzes the requirements imposed by the new medical reform on human resource allocation in public hospitals,examines existing issues such as an unbalanced personnel structure,unscientific job design,and an inadequate talent mobility mechanism,and proposes corresponding optimization strategies.These strategies include improving the recruitment and selection process,scientifically planning job structures,and establishing a flexible talent mobility mechanism.The goal is to enhance the quality of medical services,improve hospital operational efficiency,and promote the sustainable development of public hospitals.展开更多
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
In this paper,we study the optimal investment problem of an insurer whose surplus process follows the diffusion approximation of the classical Cramer-Lundberg model.Investment in the foreign markets is allowed,and the...In this paper,we study the optimal investment problem of an insurer whose surplus process follows the diffusion approximation of the classical Cramer-Lundberg model.Investment in the foreign markets is allowed,and therefore,the foreign exchange rate model is incorporated.Under the allowing of selling and borrowing,the problem of maximizing the expected exponential utility of terminal wealth is studied.By solving the corresponding Hamilton-Jacobi-Bellman equations,the optimal investment strategies and value functions are obtained.Finally,numerical analysis is presented.展开更多
In recent years,managing rural living environments has become a vital component of the rural revitalization strategy.Jiangsu Province,rich in economic and cultural resources,has accumulated valuable experience in expl...In recent years,managing rural living environments has become a vital component of the rural revitalization strategy.Jiangsu Province,rich in economic and cultural resources,has accumulated valuable experience in exploring rural environmental governance by integrating culture and tourism.This research analyzes the practical logic of rural environmental governance in Jiangsu from both theoretical and practical perspectives.It emphasizes the importance of integrating culture and tourism to enhance environmental governance while addressing the associated challenges.The results show that the integration of culture and tourism not only enhances rural ecological environments and living facilities but also boosts regional economic development and the preservation of cultural resources.Nevertheless,there are still challenges in aspects such as the collaboration of stakeholders,the establishment of long-term mechanisms,and the application of digital technologies.Based on real cases in Jiangsu,this study suggests optimization strategies and policy recommendations to improve rural environmental governance within the framework of cultural and tourism integration.展开更多
With the advent of the economic era of“Internet+,”new media has become a new means of enterprise marketing by virtue of its own advantages,including fast communication speed,diversified communication channels,low co...With the advent of the economic era of“Internet+,”new media has become a new means of enterprise marketing by virtue of its own advantages,including fast communication speed,diversified communication channels,low cost,and novel content.Enterprises should actively integrate into the new media era,constantly improve their cultural soft power and new media marketing ability,build new marketing systems,set up professional new media marketing teams,and further improve their marketing ability;innovate new media marketing content,attract consumers’attention,and expand the audience group;open up new media marketing channels,carry out diversified marketing,comprehensively enhance their marketing ability,and succeed in the fierce market competition.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.71872122)Late-stage Subsidy Project of Humanities and Social Sciences of the Education Department of China(Grant No.20JHQ095).
文摘The energy-saving renovation of existing residential buildings is a crucial measure to achieve the strategic goal of energy conservation and emission reduction in China and build ecologically livable cities.This article focuses on the perspective of subject behavior,starting from analyzing the current situation and difficulties of the operation of the energy-saving renovation market for existing residential buildings in China,drawing on the practical experience of the operation of the existing residential building energy-saving renovation market abroad.Based on principles such as systematicity,humanization,feasibility,and sustainability,the article constructs an operation optimization system of the existing residential building energy-saving renovation market from the perspective of subject behavior.In order to provide a reference for the healthy and orderly operation of the existing residential building energy-saving renovation market,this paper proposes implementation strategies for optimizing the operation of the existing residential building energy-saving renovation market.Suggestions are proposed from four aspects:optimizing the market environment,innovating the financing model,building the information sharing platform,and utilizing the synergies of the main subjects.
文摘The application and development of a wide-area measurement system(WAMS)has enabled many applications and led to several requirements based on dynamic measurement data.Such data are transmitted as big data information flow.To ensure effective transmission of wide-frequency electrical information by the communication protocol of a WAMS,this study performs real-time traffic monitoring and analysis of the data network of a power information system,and establishes corresponding network optimization strategies to solve existing transmission problems.This study utilizes the traffic analysis results obtained using the current real-time dynamic monitoring system to design an optimization strategy,covering the optimization in three progressive levels:the underlying communication protocol,source data,and transmission process.Optimization of the system structure and scheduling optimization of data information are validated to be feasible and practical via tests.
文摘In this paper, a hybrid automatic optimization strategy is proposed for the design of underwater robot lines. Isight is introduced as an integration platform. The construction of this platform is based on the user programming and several commercial software including UG6.0, GAMBIT2.4.6 and FLUENT12.0. An intelligent parameter optimization method, the particle swarm optimization, is incorporated into the platform. To verify the strategy proposed, a simulation is conducted on the underwater robot model 5470, which originates from the DTRC SUBOFF project. With the automatic optimization platform, the minimal resistance is taken as the optimization goal;the wet surface area as the constraint condition; the length of the fore-body, maximum body radius and after-body＇s minimum radius as the design variables. With the CFD calculation, the RANS equations and the standard turbulence model are used for direct numerical simulation. By analyses of the simulation results, it is concluded that the platform is of high efficiency and feasibility. Through the platform, a variety of schemes for the design of the lines are generated and the optimal solution is achieved. The combination of the intelligent optimization algorithm and the numerical simulation ensures a global optimal solution and improves the efficiency of the searching solutions.
基金the Open Research Foundation of Science and Technology in Aerospace Flight Dynamics Laboratory of China(GF2018005).
文摘Recent studies of the space debris environment in Low Earth Orbit(LEO)have shown that the critical density of space debris has been reached in certain regions.The Active Debris Removal(ADR)mission,to mitigate the space debris density and stabilize the space debris environment,has been considered as a most effective method.In this paper,a novel two-level optimization strategy for multi-debris removal mission in LEO is proposed,which includes the low-level and high-level optimization process.To improve the overall performance of the multi-debris active removal mission and obtain multiple Pareto-optimal solutions,the ADR mission is seen as a Time-Dependant Traveling Salesman Problem(TDTSP)with two objective functions to minimize the total mission duration and the total propellant consumption.The problem includes the sequence optimization to determine the sequence of removal of space debris and the transferring optimization to define the orbital maneuvers.Two optimization models for the two-level optimization strategy are built in solving the multi-debris removal mission,and the optimal Pareto solution is successfully obtained by using the non-dominated sorting genetic algorithm II(NSGA-II).Two test cases are presented,which show that the low level optimization strategy can successfully obtain the optimal sequences and the initial solution of the ADR mission and the high level optimization strategy can efficiently and robustly find the feasible optimal solution for long duration perturbed rendezvous problem.
基金National Natural Science Foundation of China(No.61301101)
文摘A novel joint optimization strategy for the secondary user( SU) was proposed to consider the short-term and long-term video transmissions over distributed cognitive radio networks( DCRNs).Since the long-term video transmission consisted of a series of shortterm transmissions, the optimization problem in the video transmission was a composite optimization process. Firstly,considering some factors like primary user's( PU's) collision limitations,non-synchronization between SU and PU,and SU's limited buffer size, the short-term optimization problem was formulated as a mixed integer non-linear program( MINLP) to minimize the block probability of video packets. Secondly,combining the minimum packet block probability obtained in shortterm optimization and SU's constraint on hardware complexity,the partially observable Markov decision process( POMDP) framework was proposed to learn PU's statistic information over DCRNs.Moreover,based on the proposed framework,joint optimization strategy was designed to obtain the minimum packet loss rate in long-term video transmission. Numerical simulation results were provided to demonstrate validity of our strategies.
文摘At present,the cruise industry has become the most rapidly developing industry in the modem tourism industry. The development of Chinese cruise tourism is in the ascendant, and the Chinese cruise lines are also developing and perfecting.Cruise line is an important guarantee for the sustained and healthy development of cruise tourism industry. Based on the theme of China＇s coastal cruise routes, this paper analyzes the layout of the global and Chinese Cruise routes, probes into the development of the cruise and cruise routes in China＇s domestic coastal regions, and on this basis it analyzes the current problems of the development of the domestic coastal cruise lines and puts forward some pertinent countermeasures and suggestions for the problems appearing. The purpose of this study is to provide some help for the development of the cruise industry in China, so as to open up the road for the development of the cruise tourism which is suitable for China＇s national conditions and vigorously promote the development of the cruise industry in China.
文摘After entering the new normal of economy, although the economy is in a state of continuous development, with the deepening of the reform of the market economy system, the whole market environment has become more and more severe, and many companies are submerged in the wave of market economy due to poor management. Under such a background, the group companies are also facing increasing pressure on business development. In order to ensure the stability and sustainability of development and improve the profit level, it is necessary to do a good job in scientific control and effective intervention on the financial management activities of subsidiaries, so as to reduce financial risks, achieve profit targets and achieve good synergies. The financial management of a group company to a subsidiary company should proceed from the actual situation, objectively analyze the actual problems existing in the current financial management, and then determine the corresponding financial control measures, so as to enhance the overall competitiveness of the group company, strengthen its overall strength and adapt to the increasingly complex development environment.
文摘Under the condition of modern society, with the development of our country's economy, the civil servants have a strong growth and development trend, which largely depends on the distribution. Finance and the people are important sources of budget allocation. They have sufficient economic support to ensure the normal operation of our financial institutions. The institutions must operate normally. Therefore, the people are called civil servants. At the same time, it should be pointed out that state-owned enterprises are generally a relatively special institutional unit and cannot fully disclose their information to other market entities in the course of their activities, including: in these countries, due to information security and social stability, social media cannot control the operation of state institutions, and as time goes on, they have become the target of criticism. Therefore, it is necessary to carry out effective internal and office management, analysis and continuous improvement on relevant management issues, in order to enable the state-owned enterprises to give full play to their role and continuously pursue serving the people, so as to make our country's economy continue to prosper.
文摘Paper books and documents are the main media of information service in most university libraries.In order to study the main reasons for the decline of the utilization rate of paper books in university libraries,this paper takes a well-known university library in China as an example,discusses the current situation of its low utilization rate of paper books and the reasons for the problems,and puts forward relevant optimization strategies,so as to promote the improvement of the construction quality of university libraries in China.
文摘With the rapid development of the real estate industry, real estate management has become one of the main kinetic energy of China's economic growth. Especially in recent years, people's demand for housing continues to rise, making the real estate industry gradually become one of the pillars of China's economy. However, the housing economy is closely related to people's life, which directly affects people's normal life and social stability. If the development process of real estate economy is irrational or reduced to speculative products, it will directly endanger the healthy development of the real estate industry, and it is not conducive to the steady development of China's economy and society.
文摘In recent years, with the continuous growth of social and economic level, no matter the production of all walks of life or people's daily life for the computer demand has been increasing, in this context, the power plant to bear the production pressure is more difficult. Steam turbine is one of the important production equipment in power plant, its safe and stable operation is related to the quality and efficiency of power plant production. Based on this, this paper focuses on the analysis of the operation optimization strategy of steam turbines in the process of centralized control operation of power plants, aiming to extend the service life of steam turbines, improve its production and operation efficiency, and then help the growth of centralized control operation level of power plants, and greatly improve the power generation efficiency and safety.
文摘With the improvement of social and economic development level, China's construction industry is also developing. Therefore, there are many new problems in its construction site management. These problems will seriously affect the smooth implementation of the whole construction project. In addition, it may cause potential personal safety hazards. Therefore, it is necessary to optimize these construction site managements. Comprehensively analyze all links in the construction process, and then continuously promote the smooth implementation of construction projects in China.
文摘Peoples lifestyle is different from the past. Now their life and work are in a state of high efficiency and rapid change. Therefore, if the construction industry wants to attract the attention of the market, it must find support points in the industry, innovate the construction mode of construction projects, and roughly adjust the original construction site to assembly projects. This is because there are many shortcomings in site construction, such as high cost, heavy workload, selection of decorative materials, good decorative effect and long construction period. Prefabricated buildings will become simple and convenient. It is a new industry in construction engineering. At present, the construction industry at home and abroad will focus on prefabricated buildings. Therefore, it is particularly important to solve the technical problems of precast structure construction. Only by improving the level of construction technology can precast works be flexibly applied in the construction industry.
文摘At present, heavy metal pollution is one of the main reasons for the destruction of the ecological environment, among which heavy metals discharged from industrial production and chemical manufacturing still have great hidden dangers, which have a great impact on the ecological environment. In addition, due to a series of reasons, such as imperfect supervision system, there are still many shortcomings and problems in the heavy metal treatment work, which also hinders the heavy metal environmental treatment work in China. In view of the above problems, relevant departments should formulate strict governance system, strengthen the supervision of enterprise production, and put the governance responsibility into the main person in charge or individual of the enterprise, so as to promote the effective completion of heavy metal environmental governance.
文摘In the process of education and teaching, the relationship between teachers and students is the most important one, which includes their position, role and treatment, mutual support and interdependence. In the era of scarce educational resources, teachers are the owners of knowledge. However, when the emergence of the Internet puts a huge amount of knowledge in front of people, what is scarce in education is no longer the amount of knowledge, but the selection, carding, promotion and internalization of knowledge. The traditional teaching method is transforming into learner centered individualized teaching and learning. In the process of teaching and learning, the proportion and focus of knowledge transfer and knowledge internalization have also changed. Under the new environment, teachers need to change the habits of teaching and learning for thousands of years, and carry out teaching in innovative mode through new technical means, so as to achieve higher results. However, in the new technology environment, if there is no complete teaching logic and the organic connection and cooperation between man and machine, classroom teaching will not present an orderly and efficient situation. If there is no good teaching design and the new educational technology is used freely, the teaching effect may not be as good as the traditional blackboard teaching mode.
文摘With the advancement of the new medical reform,public hospitals face numerous challenges and opportunities,making the optimization of human resource allocation a critical priority.This paper analyzes the requirements imposed by the new medical reform on human resource allocation in public hospitals,examines existing issues such as an unbalanced personnel structure,unscientific job design,and an inadequate talent mobility mechanism,and proposes corresponding optimization strategies.These strategies include improving the recruitment and selection process,scientifically planning job structures,and establishing a flexible talent mobility mechanism.The goal is to enhance the quality of medical services,improve hospital operational efficiency,and promote the sustainable development of public hospitals.
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supported by the National Natural Science Foundation of China(Grant No.12301603).
文摘In this paper,we study the optimal investment problem of an insurer whose surplus process follows the diffusion approximation of the classical Cramer-Lundberg model.Investment in the foreign markets is allowed,and therefore,the foreign exchange rate model is incorporated.Under the allowing of selling and borrowing,the problem of maximizing the expected exponential utility of terminal wealth is studied.By solving the corresponding Hamilton-Jacobi-Bellman equations,the optimal investment strategies and value functions are obtained.Finally,numerical analysis is presented.
基金2022 Key Research Project of Philosophy and Social Sciences at Nanjing Tech University Pujiang Institute,“The Subject-Object Relationship and Its Coordination Mechanism in the Construction of Beautiful Countryside in Jiangsu”(Project No.:Njpj2022-2-01)。
文摘In recent years,managing rural living environments has become a vital component of the rural revitalization strategy.Jiangsu Province,rich in economic and cultural resources,has accumulated valuable experience in exploring rural environmental governance by integrating culture and tourism.This research analyzes the practical logic of rural environmental governance in Jiangsu from both theoretical and practical perspectives.It emphasizes the importance of integrating culture and tourism to enhance environmental governance while addressing the associated challenges.The results show that the integration of culture and tourism not only enhances rural ecological environments and living facilities but also boosts regional economic development and the preservation of cultural resources.Nevertheless,there are still challenges in aspects such as the collaboration of stakeholders,the establishment of long-term mechanisms,and the application of digital technologies.Based on real cases in Jiangsu,this study suggests optimization strategies and policy recommendations to improve rural environmental governance within the framework of cultural and tourism integration.
文摘With the advent of the economic era of“Internet+,”new media has become a new means of enterprise marketing by virtue of its own advantages,including fast communication speed,diversified communication channels,low cost,and novel content.Enterprises should actively integrate into the new media era,constantly improve their cultural soft power and new media marketing ability,build new marketing systems,set up professional new media marketing teams,and further improve their marketing ability;innovate new media marketing content,attract consumers’attention,and expand the audience group;open up new media marketing channels,carry out diversified marketing,comprehensively enhance their marketing ability,and succeed in the fierce market competition.
