Hydrocarbon situation in fractures(HSFs)is a key parameter for shale oil and gas resource evaluation.However,conventional experimental measurements are often limited by discontinuous sampling,high cost and low efficie...Hydrocarbon situation in fractures(HSFs)is a key parameter for shale oil and gas resource evaluation.However,conventional experimental measurements are often limited by discontinuous sampling,high cost and low efficiency.Here,we propose a continuous quantitative prediction method for HSFs in shale reservoirs that integrates multi-source geological and geophysical data with machine learning algorithms.Using experimental HSFs measurements from Jurassic shales in the Sichuan Basin together with multi-source geophysical responses,Pearson correlation analysis reveals significant associations among HSFs and porosity,total organic carbon(TOC),acoustic transit time and density.The results indicate that not all fracture-rich intervals exhibit hydrocarbon enrichment or enhanced productivity;notably high HSFs occur only in shale intervals with both a high TOC and porosity.On this basis,we developed an AI-based predictive framework that couples geological constraints with multi-source data fusion.The optimized eXtreme Gradient Boosting(XGBoost)model achieves excellent predictive performance,with a residual error(RE)of 0.221,root mean square error(RMSE)of 0.311,mean absolute error(MAE)of 0.156 and a coefficient of determination(R 2)of 0.959.This approach enables rapid,high-precision,well-scale continuous evaluation of HSFs in shales with prediction accuracy exceeding 95%,providing a powerful tool for shale sweet-spot prediction and resource evaluation,and holds significant potential for intelligent predicting of geological parameters and digital twin model establishment across whole petroleum systems worldwide.展开更多
The research mainly discuss that public speeches should be made and delivered in accordance of speaking situation. By investigating different sample public speeches, it can be found that proper use of"context of ...The research mainly discuss that public speeches should be made and delivered in accordance of speaking situation. By investigating different sample public speeches, it can be found that proper use of"context of situation"plays an important role in making public speeches appropriate both in linguistic scope and in social scope. The research also gives some suggestions on writing of public speeches.展开更多
Wireless networks support numerous terminals,manage large data volumes,and provide diverse services,but the vulnerability to environmental changes leads to increased complexity and costs.Situational awareness has been...Wireless networks support numerous terminals,manage large data volumes,and provide diverse services,but the vulnerability to environmental changes leads to increased complexity and costs.Situational awareness has been widely applied in network management,but existing methods fail to find optimal solutions due to the high heterogeneity of base stations,numerous metrics,and complex intercell dependencies.To address this gap,this paper proposes a specialized framework for wireless networks,integrating an evaluation model and control approach.The framework expands the indicator set into four key areas,introduces an evaluation method,and proposes the indicator perturbation greedy(IPG)algorithm and the adjustment scheme selection method based on damping coefficient(DCSS)for effective network optimization.A case study in an urban area demonstrates the framework’s ability to balance and improve network performance,enhancing situational awareness and operational efficiency under dynamic conditions.展开更多
Situational language teaching,one of the influential and profound language teaching methods,is rooted in the“context of situation”theory,which is put forward by London School.Malinowski thinks language is bound up w...Situational language teaching,one of the influential and profound language teaching methods,is rooted in the“context of situation”theory,which is put forward by London School.Malinowski thinks language is bound up with situation through his primitive culture researching experience.He mentions the elements of culture,custom etc.besides situation contribute to the meaninggenerating process.However,it is Firth who clearly includes these in his situation theory.In addition,he invents the rather famous“typical context of situation”theory.His student,Halliday inherits his thoughts and further improves it by advocating the three factors,mode,tenor and field,in determining the typical situation from a sociological perspective.展开更多
萨特作为剧作家,推崇新的剧种théatre de situations,situation自然是萨特戏剧理论的核心概念之一,同时也是萨特的重要哲学术语之一。然而在汉语中,不管是译自法语还是英语,不管是在译作还是学术作品中,théatre de situation...萨特作为剧作家,推崇新的剧种théatre de situations,situation自然是萨特戏剧理论的核心概念之一,同时也是萨特的重要哲学术语之一。然而在汉语中,不管是译自法语还是英语,不管是在译作还是学术作品中,théatre de situations有“情境剧”“境遇剧”“处境剧”“境况剧”等多种译名。在不同作/译者间甚至在同一作/译者的不同作品中,situation的中译名都存在明显分歧,相关的讨论却寥寥无几。那么究竟如何翻译该词才算贴切呢?针对此问题,本文追本究源,将萨特戏剧理论与哲学理论结合起来讨论。通过考查各种论文、著作及译作,查阅中法文辞书或文献中相关词汇的用法,并结合萨特原著中该词的内涵,本文作者初步得出结论:situation译为“处境”更为合适。展开更多
BACKGROUND Systematic review focuses on the visual patient avatar(VPA)technology,a tool designed to enhance situational awareness in anesthesia by transforming traditional numerical data into intuitive visual displays...BACKGROUND Systematic review focuses on the visual patient avatar(VPA)technology,a tool designed to enhance situational awareness in anesthesia by transforming traditional numerical data into intuitive visual displays.AIM To explore how VPA can improve perceptual performance,reduce cognitive load,and increase user acceptance,potentially leading to better patient outcomes.METHODS The review is based on 14 studies conducted between 2018 and 2023 in five different hospitals across Europe.RESULTS These studies demonstrate that VPA allows clinicians to perceive and recall vital signs more efficiently than conventional monitoring methods.The technology’s intuitive design helps reduce cognitive workload,indicating less mental effort required for patient monitoring.Users’feedback on VPA was generally positive,highlighting its potential to enhance monitoring and decision-making in highstress environments.However,some users noted the need for further development,particularly in visualization design and data integration.CONCLUSION Review concludes that VPA technology represents a significant advancement in patient monitoring,promoting better situational awareness and potentially improving safety in perioperative care.展开更多
The international situation remained tense and turbulent in 2024,with the constantly unfolding spillover of crises,escalating conflicts and widening rifts,especially with the hard-to-ease Ukraine crisis and the humani...The international situation remained tense and turbulent in 2024,with the constantly unfolding spillover of crises,escalating conflicts and widening rifts,especially with the hard-to-ease Ukraine crisis and the humanitarian crisis worsened by the turmoil in the Middle East.展开更多
Battlefield situation awareness is equivalent to the observation and orientation part of the Observation-Orientation-Decision-Action(OODA)loop.It is the key to transforming information advantage into decision-making a...Battlefield situation awareness is equivalent to the observation and orientation part of the Observation-Orientation-Decision-Action(OODA)loop.It is the key to transforming information advantage into decision-making advantages and an essential support for agile command decision-making.With the rapid rise and widespread application of various advanced intelligent technologies and model algorithms in the military field,traditional situation awareness technology and capacity building are facing great challenges.Relying solely on manual processing of battlefield situational data is no longer sufficient to meet the changing needs of the battlefield,nor can it provide commanders with real-time,accurate,efficient,and reliable situational information.Therefore,it is necessary to use highperformance hardware facilities and artificial intelligence technology to process massive battlefield data and provide an important reference basis for commanders to implement decision-making behaviors.展开更多
As one of the world's three major food crops and an important economic and oil crop,soybean plays a crucial role in ensuring food safety.In recent years,there are many problems in soybean cultivation,production an...As one of the world's three major food crops and an important economic and oil crop,soybean plays a crucial role in ensuring food safety.In recent years,there are many problems in soybean cultivation,production and processing.In view of this situation,this paper comprehensively expounded and decomposed the cultivation situation,existing problems,specific countermeasures and conclusions,so as to re-recognize them.This study provides reference materials for the sustainable and healthy development of the soybean industry.展开更多
With the increase of global climate change and extreme weather events,more and more attention has been paid to the protection of China's meteorological cultural heritage.Meteorological cultural heritage is an impo...With the increase of global climate change and extreme weather events,more and more attention has been paid to the protection of China's meteorological cultural heritage.Meteorological cultural heritage is an important part of China's cultural heritage,which is unique and non renewable.It is of great significance to the inheritance of China's excellent traditional culture and the construction of a meteorological power.Because it is more special than water conservancy cultural heritage in China's historical development,it is not only a national context,but also mixed with foreign activities.This paper focuses on the protection and research of China's meteorological cultural heritage.Based on the current situation of the protection and utilization of China's meteorological cultural heritage,it analyzes the problems and shortcomings in the current protection work.In response to these problems,some targeted protection measures are proposed,including strengthening the construction of laws and regulations,improving the level of protection technology,enhancing public participation,and promoting the protection and sustainable development of meteorological cultural heritage.The aim is to provide useful references for the protection of China's meteorological cultural heritage in the future.展开更多
To address the problem that existing studies lack analysis of the relationship between attack-defense game behaviors and situation evolution from the game perspective after constructing an attack-defense model,this pa...To address the problem that existing studies lack analysis of the relationship between attack-defense game behaviors and situation evolution from the game perspective after constructing an attack-defense model,this paper proposes a network attack-defense game model(ADGM).Firstly,based on the assumption of incomplete information between the two sides of the game,the ADGM model is established,and methods of payoff quantification,equilibrium solution,and determination of strategy confrontation results are presented.Then,drawing on infectious disease dynamics,the network attack-defense situation is defined based on the density of nodes in various security states,and the transition paths of network node security states are analyzed.Finally,the network zero-day virus attack-defense behaviors are analyzed,and comparative experiments on the attack-defense evolution trends under the scenarios of different strategy combinations,interference methods,and initial numbers are conducted using the NetLogo simulation tool.The experimental results indicate that this model can effectively analyze the evolution of the macro-level network attack-defense situation from the micro-level attack-defense behaviors.For instance,in the strategy selection experiment,when the attack success rate decreases from 0.49 to 0.29,the network destruction rate drops by 11.3%,in the active defense experiment,when the interference coefficient is reduced from 1 to 0.7,the network destruction rate decreases by 7%,and in the initial node number experiment,when the number of initially infected nodes increases from 10 to 30,the network destruction rate rises by 3%.展开更多
Objective To analyze the current situation of drug shortage in some western countries and their management strategies,and to put forward feasible suggestions for drug shortage management in China.Methods The methods o...Objective To analyze the current situation of drug shortage in some western countries and their management strategies,and to put forward feasible suggestions for drug shortage management in China.Methods The methods of literature research and comparative study were used to collect policy information and related data from official government websites and news websites,then,the current situation and management of drug shortage in some western countries were compared and studied to summarize their effective experience in dealing with drug shortage.Results and Conclusion The current situation and influencing factors of drug shortage in these western countries are different,but the management system established to deal with drug shortage is good,including the support of policies and regulations,the early warning of monitoring platform and the construction of organizational system.Drawing lessons from their experience,China should strengthen cooperation and consultation among stakeholders and rationally allocate powers and responsibilities.The transparency of drug shortage data disclosure should be increased.The important role of pharmacists should be played to strengthen the management.Further optimizing the drug shortage management system in China can ensure the safety of drug supply.展开更多
This article takes the joint training model as the research object and focuses on the joint postgraduate training in vocational universities.Based on a brief overview of the connotation and significance of joint postg...This article takes the joint training model as the research object and focuses on the joint postgraduate training in vocational universities.Based on a brief overview of the connotation and significance of joint postgraduate training in vocational universities,a systematic summary of the current situation of such training is conducted through practical research.While elaborating on the implementation and characteristics of joint postgraduate training in vocational universities,the article emphasizes a systematic collection and analysis of existing problems.Finally,guided by these problems and considering the characteristics and issues of joint postgraduate training in vocational universities,several improvement strategies are proposed.It is emphasized that vocational universities need to actively optimize their management models,establish restraint mechanisms,and implement dynamic adjustments to achieve scientific management of joint postgraduate training.This approach aims to promote academic innovation and improve training quality simultaneously.展开更多
With the accelerating urbanization process,issues related to the urban ecological environment have become increasingly prominent.Among these,greenway optimization is regarded as one of the key approaches to improving ...With the accelerating urbanization process,issues related to the urban ecological environment have become increasingly prominent.Among these,greenway optimization is regarded as one of the key approaches to improving urban ecological quality.As the capital of Anhui Province,Hefei is striving to build a comprehensive greenway network in line with its“Park City”strategy.However,the current development of Hefei’s greenways faces challenges such as delayed planning,limited functions,inadequate facilities,and weak operation and maintenance management.In this study,comparative analysis and literature review were combined to comprehensively summarize the current characteristics of greenway development in Hefei,and improvement suggestions were proposed in areas such as ecological restoration,functional expansion,facility establishment,and long-term management.It is suggested that Hefei should enhance the systematic and synergistic nature of its greenway system,create a city green space network with regional characteristics,and optimize the city’s environmental carrying capacity,so as to meet the diverse needs of the public and thereby provide theoretical support and practical guidance for the sustainable development of Hefei’s greenway system.展开更多
A situation maintenance-based cooperative guidance strategy is proposed to intercept a high-speed and high-maneuverability target via inferior missiles.Reachability and relative motion analyses are conducted to develo...A situation maintenance-based cooperative guidance strategy is proposed to intercept a high-speed and high-maneuverability target via inferior missiles.Reachability and relative motion analyses are conducted to develop and pursue virtual targets,respectively.A two-stage guidance strategy under nonlinear kinematics is developed on the basis of virtual targets.The first stage optimizes the coverage and collision situation by pursuing virtual targets under specific angular constraints.The second stage subsequently intercepts the superior target based on the handover condition optimized by the first stage.Numerical simulation results are provided to compare the effectiveness and superiority of the proposed strategy with those of the reachability-based cooperative strategy(RCS),coverage-based cooperative guidance(CBCG)and augmented proportional navigation(APN)under various maneuvering modes.展开更多
Pueraria montana is a perennial twining vine species of Pueraria in Leguminosae.Because of its fast growth and strong climbing and covering ability,this species has the potential threat of invading forest ecosystem.Ba...Pueraria montana is a perennial twining vine species of Pueraria in Leguminosae.Because of its fast growth and strong climbing and covering ability,this species has the potential threat of invading forest ecosystem.Based on the investigation of the occurrence and harm of P.montana in the"four mountains"forest ecosystem in the central urban area of Chongqing,combined with its growth habits and biological characteristics,we comprehensively evaluated its harm risk.The results show that P.montana is widely distributed in the forest ecosystem within the"four mountains"in the central urban area of Chongqing.On average,there was a distribution site of P.montana every 1.38 km of forest road with a scale of 0.43 hm 2/survey point and a coverage of about 42.86%.P.montana mainly occupy forest land by covering and climbing,threatening the original vegetation of forest land.It grows rapidly,and its ability of diffusion and colonization is very strong.The average length of new branches was 11.52 m/year,and the number of effective tillers was 5.25.According to National Forestry Pest Risk Analysis Index System,the risk assessment value of P.montana was 2.51,so it is a medium-risk harmful plant to forestry.It is suggested that the forestry department should strengthen the management of P.montana to prevent its further spread.展开更多
With the development of the international education environment and the continuous reform of higher education in China,the working pace in universities is accelerating,with higher requirements for university work and ...With the development of the international education environment and the continuous reform of higher education in China,the working pace in universities is accelerating,with higher requirements for university work and increasingly apparent pressure on teachers.Young teachers in Chinese universities are prone to occupational stress.In addition to undertaking teaching,research,and other tasks,they feel anxious and at a loss when facing personal issues such as job promotion and taking care of their families.This article selects young teachers from some universities in China as research subjects and uses a questionnaire survey method to understand the current situation and sources of pressure on young teachers in universities,so as to focus on and alleviate their stress in a targeted manner.展开更多
The digital economy has injected continuous momentum into the development of urban economy and plays a positive and important role in the transformation and upgrading of urban energy consumption.Specifically,the digit...The digital economy has injected continuous momentum into the development of urban economy and plays a positive and important role in the transformation and upgrading of urban energy consumption.Specifically,the digital economy can significantly improve the efficiency of urban energy consumption by virtue of its distinctive characteristics of low pollution and high efficiency.Moreover,empowered by the digital economy,the pace of transformation and upgrading of high-pollution traditional industries has been accelerated.Particularly importantly,the urban energy consumption structure has been optimized and adjusted through the indirect role of intermediate factors.From this perspective,studying the current situation and countermeasures of urban energy consumption under the digital economy holds important practical significance both in theory and practice.This paper first briefly summarizes the relevant literature on the impact of the digital economy on the energy consumption structure;then,it focuses on detailed data to explore the current situation of urban energy consumption under the digital economy model;finally,based on the summary of the current situation,it puts forward practical and feasible suggestions,hoping to provide a decision-making basis for the implementation of policies in different types of cities and offer innovative ideas for promoting the high-quality development of urban energy systems.展开更多
Animal husbandry is an essential pillar sector in China.However,the wastewater including a mixture of feces,urine,and flushing water from livestock and poultry farming poses serious environmental risks if not properly...Animal husbandry is an essential pillar sector in China.However,the wastewater including a mixture of feces,urine,and flushing water from livestock and poultry farming poses serious environmental risks if not properly managed or over-applied.This paper analyzes the existing challenges in the utilization of livestock manure,focusing on source control,process management,and end-use treatment.To address these issues,it proposes establishing a sustainable long-term mechanism.Key recommendations include enhancing source control,strengthening policy support to alleviate the financial burden on enterprises,aligning with market demands,intensifying the promotion of technologies and equipment development,and improving manure quality.In addition,advocating for grain-efficient animal husbandry and promoting diversified utilization through bio-chain approaches are essential.展开更多
College English teaching is a crucial component of higher education.Enhancing college students’English learning outcomes has long been a primary focus for educators.With the continuous evolution of educational philos...College English teaching is a crucial component of higher education.Enhancing college students’English learning outcomes has long been a primary focus for educators.With the continuous evolution of educational philosophies,traditional college English teaching methods no longer meet the learning needs of contemporary students.Situational cognitive learning theory emphasizes learner-centered approaches and highlights the contextual and practical application of knowledge,offering innovative perspectives for reforming college English teaching.When applied effectively,situational cognitive learning theory can optimize teaching methods and significantly improve learning outcomes.This paper explores the connotation and characteristics of situational cognitive learning theory,evaluates its applicability in college English teaching,and discusses its practical implementation in this context.The aim is to provide theoretical and practical references for improving the quality of college English education.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.42402148&42472184)National Science and Technology Major Project(Grant Nos.2025ZD1404100-001-005&2025ZD1403900-003-002).
文摘Hydrocarbon situation in fractures(HSFs)is a key parameter for shale oil and gas resource evaluation.However,conventional experimental measurements are often limited by discontinuous sampling,high cost and low efficiency.Here,we propose a continuous quantitative prediction method for HSFs in shale reservoirs that integrates multi-source geological and geophysical data with machine learning algorithms.Using experimental HSFs measurements from Jurassic shales in the Sichuan Basin together with multi-source geophysical responses,Pearson correlation analysis reveals significant associations among HSFs and porosity,total organic carbon(TOC),acoustic transit time and density.The results indicate that not all fracture-rich intervals exhibit hydrocarbon enrichment or enhanced productivity;notably high HSFs occur only in shale intervals with both a high TOC and porosity.On this basis,we developed an AI-based predictive framework that couples geological constraints with multi-source data fusion.The optimized eXtreme Gradient Boosting(XGBoost)model achieves excellent predictive performance,with a residual error(RE)of 0.221,root mean square error(RMSE)of 0.311,mean absolute error(MAE)of 0.156 and a coefficient of determination(R 2)of 0.959.This approach enables rapid,high-precision,well-scale continuous evaluation of HSFs in shales with prediction accuracy exceeding 95%,providing a powerful tool for shale sweet-spot prediction and resource evaluation,and holds significant potential for intelligent predicting of geological parameters and digital twin model establishment across whole petroleum systems worldwide.
文摘The research mainly discuss that public speeches should be made and delivered in accordance of speaking situation. By investigating different sample public speeches, it can be found that proper use of"context of situation"plays an important role in making public speeches appropriate both in linguistic scope and in social scope. The research also gives some suggestions on writing of public speeches.
文摘Wireless networks support numerous terminals,manage large data volumes,and provide diverse services,but the vulnerability to environmental changes leads to increased complexity and costs.Situational awareness has been widely applied in network management,but existing methods fail to find optimal solutions due to the high heterogeneity of base stations,numerous metrics,and complex intercell dependencies.To address this gap,this paper proposes a specialized framework for wireless networks,integrating an evaluation model and control approach.The framework expands the indicator set into four key areas,introduces an evaluation method,and proposes the indicator perturbation greedy(IPG)algorithm and the adjustment scheme selection method based on damping coefficient(DCSS)for effective network optimization.A case study in an urban area demonstrates the framework’s ability to balance and improve network performance,enhancing situational awareness and operational efficiency under dynamic conditions.
文摘Situational language teaching,one of the influential and profound language teaching methods,is rooted in the“context of situation”theory,which is put forward by London School.Malinowski thinks language is bound up with situation through his primitive culture researching experience.He mentions the elements of culture,custom etc.besides situation contribute to the meaninggenerating process.However,it is Firth who clearly includes these in his situation theory.In addition,he invents the rather famous“typical context of situation”theory.His student,Halliday inherits his thoughts and further improves it by advocating the three factors,mode,tenor and field,in determining the typical situation from a sociological perspective.
文摘萨特作为剧作家,推崇新的剧种théatre de situations,situation自然是萨特戏剧理论的核心概念之一,同时也是萨特的重要哲学术语之一。然而在汉语中,不管是译自法语还是英语,不管是在译作还是学术作品中,théatre de situations有“情境剧”“境遇剧”“处境剧”“境况剧”等多种译名。在不同作/译者间甚至在同一作/译者的不同作品中,situation的中译名都存在明显分歧,相关的讨论却寥寥无几。那么究竟如何翻译该词才算贴切呢?针对此问题,本文追本究源,将萨特戏剧理论与哲学理论结合起来讨论。通过考查各种论文、著作及译作,查阅中法文辞书或文献中相关词汇的用法,并结合萨特原著中该词的内涵,本文作者初步得出结论:situation译为“处境”更为合适。
文摘BACKGROUND Systematic review focuses on the visual patient avatar(VPA)technology,a tool designed to enhance situational awareness in anesthesia by transforming traditional numerical data into intuitive visual displays.AIM To explore how VPA can improve perceptual performance,reduce cognitive load,and increase user acceptance,potentially leading to better patient outcomes.METHODS The review is based on 14 studies conducted between 2018 and 2023 in five different hospitals across Europe.RESULTS These studies demonstrate that VPA allows clinicians to perceive and recall vital signs more efficiently than conventional monitoring methods.The technology’s intuitive design helps reduce cognitive workload,indicating less mental effort required for patient monitoring.Users’feedback on VPA was generally positive,highlighting its potential to enhance monitoring and decision-making in highstress environments.However,some users noted the need for further development,particularly in visualization design and data integration.CONCLUSION Review concludes that VPA technology represents a significant advancement in patient monitoring,promoting better situational awareness and potentially improving safety in perioperative care.
文摘The international situation remained tense and turbulent in 2024,with the constantly unfolding spillover of crises,escalating conflicts and widening rifts,especially with the hard-to-ease Ukraine crisis and the humanitarian crisis worsened by the turmoil in the Middle East.
文摘Battlefield situation awareness is equivalent to the observation and orientation part of the Observation-Orientation-Decision-Action(OODA)loop.It is the key to transforming information advantage into decision-making advantages and an essential support for agile command decision-making.With the rapid rise and widespread application of various advanced intelligent technologies and model algorithms in the military field,traditional situation awareness technology and capacity building are facing great challenges.Relying solely on manual processing of battlefield situational data is no longer sufficient to meet the changing needs of the battlefield,nor can it provide commanders with real-time,accurate,efficient,and reliable situational information.Therefore,it is necessary to use highperformance hardware facilities and artificial intelligence technology to process massive battlefield data and provide an important reference basis for commanders to implement decision-making behaviors.
基金Supported by Special Fund for National Modern Agricultural Industry Technology System Construction(CARS-04-CES16).
文摘As one of the world's three major food crops and an important economic and oil crop,soybean plays a crucial role in ensuring food safety.In recent years,there are many problems in soybean cultivation,production and processing.In view of this situation,this paper comprehensively expounded and decomposed the cultivation situation,existing problems,specific countermeasures and conclusions,so as to re-recognize them.This study provides reference materials for the sustainable and healthy development of the soybean industry.
文摘With the increase of global climate change and extreme weather events,more and more attention has been paid to the protection of China's meteorological cultural heritage.Meteorological cultural heritage is an important part of China's cultural heritage,which is unique and non renewable.It is of great significance to the inheritance of China's excellent traditional culture and the construction of a meteorological power.Because it is more special than water conservancy cultural heritage in China's historical development,it is not only a national context,but also mixed with foreign activities.This paper focuses on the protection and research of China's meteorological cultural heritage.Based on the current situation of the protection and utilization of China's meteorological cultural heritage,it analyzes the problems and shortcomings in the current protection work.In response to these problems,some targeted protection measures are proposed,including strengthening the construction of laws and regulations,improving the level of protection technology,enhancing public participation,and promoting the protection and sustainable development of meteorological cultural heritage.The aim is to provide useful references for the protection of China's meteorological cultural heritage in the future.
基金supported by the Major Science and Technology Programs in Henan Province(241100210100)the National Natural Science Foundation of China(62072416)+1 种基金the Key Research and Development Special Project of Henan Province(221111210500)the Project of Science and Technology in Henan Province(242102211068,232102210078).
文摘To address the problem that existing studies lack analysis of the relationship between attack-defense game behaviors and situation evolution from the game perspective after constructing an attack-defense model,this paper proposes a network attack-defense game model(ADGM).Firstly,based on the assumption of incomplete information between the two sides of the game,the ADGM model is established,and methods of payoff quantification,equilibrium solution,and determination of strategy confrontation results are presented.Then,drawing on infectious disease dynamics,the network attack-defense situation is defined based on the density of nodes in various security states,and the transition paths of network node security states are analyzed.Finally,the network zero-day virus attack-defense behaviors are analyzed,and comparative experiments on the attack-defense evolution trends under the scenarios of different strategy combinations,interference methods,and initial numbers are conducted using the NetLogo simulation tool.The experimental results indicate that this model can effectively analyze the evolution of the macro-level network attack-defense situation from the micro-level attack-defense behaviors.For instance,in the strategy selection experiment,when the attack success rate decreases from 0.49 to 0.29,the network destruction rate drops by 11.3%,in the active defense experiment,when the interference coefficient is reduced from 1 to 0.7,the network destruction rate decreases by 7%,and in the initial node number experiment,when the number of initially infected nodes increases from 10 to 30,the network destruction rate rises by 3%.
文摘Objective To analyze the current situation of drug shortage in some western countries and their management strategies,and to put forward feasible suggestions for drug shortage management in China.Methods The methods of literature research and comparative study were used to collect policy information and related data from official government websites and news websites,then,the current situation and management of drug shortage in some western countries were compared and studied to summarize their effective experience in dealing with drug shortage.Results and Conclusion The current situation and influencing factors of drug shortage in these western countries are different,but the management system established to deal with drug shortage is good,including the support of policies and regulations,the early warning of monitoring platform and the construction of organizational system.Drawing lessons from their experience,China should strengthen cooperation and consultation among stakeholders and rationally allocate powers and responsibilities.The transparency of drug shortage data disclosure should be increased.The important role of pharmacists should be played to strengthen the management.Further optimizing the drug shortage management system in China can ensure the safety of drug supply.
基金SZPU Quality Engineering Project University-level Teaching and Research Project(2025-29),Exploration and Practice of Professional Degree Cultivation and Joint Graduate Training in Vocational Undergraduate CollegesThe Young Backbone Teacher Plan of Beijing Information Science and Technology University(Project No.:YBT202448)+1 种基金Industry-University Cooperation Education Project of the Ministry of Education,Research on the Application of Model-Based Viewpoint Selection in UAV 3D Modeling Course Teaching(Project No.:1007-7025210681J1)Research on the Path of Promoting the Reform of Scientific Research Evaluation in Vocational Undergraduate University(Project No.:GDKG2025ZC1)。
文摘This article takes the joint training model as the research object and focuses on the joint postgraduate training in vocational universities.Based on a brief overview of the connotation and significance of joint postgraduate training in vocational universities,a systematic summary of the current situation of such training is conducted through practical research.While elaborating on the implementation and characteristics of joint postgraduate training in vocational universities,the article emphasizes a systematic collection and analysis of existing problems.Finally,guided by these problems and considering the characteristics and issues of joint postgraduate training in vocational universities,several improvement strategies are proposed.It is emphasized that vocational universities need to actively optimize their management models,establish restraint mechanisms,and implement dynamic adjustments to achieve scientific management of joint postgraduate training.This approach aims to promote academic innovation and improve training quality simultaneously.
基金Sponsored by Research Team Project of Anhui Xinhua University(kytd202202)Anhui Provincial College Student Innovation Training Program Support Project(S202212216138,S202212216133,S202212216147)+1 种基金National College Student Innovation Training Program Support Project(AH202112216114)Key Project for Scientific Research in Anhui Higher Education Institutions(Natural Sciences Category)(2024AH050601).
文摘With the accelerating urbanization process,issues related to the urban ecological environment have become increasingly prominent.Among these,greenway optimization is regarded as one of the key approaches to improving urban ecological quality.As the capital of Anhui Province,Hefei is striving to build a comprehensive greenway network in line with its“Park City”strategy.However,the current development of Hefei’s greenways faces challenges such as delayed planning,limited functions,inadequate facilities,and weak operation and maintenance management.In this study,comparative analysis and literature review were combined to comprehensively summarize the current characteristics of greenway development in Hefei,and improvement suggestions were proposed in areas such as ecological restoration,functional expansion,facility establishment,and long-term management.It is suggested that Hefei should enhance the systematic and synergistic nature of its greenway system,create a city green space network with regional characteristics,and optimize the city’s environmental carrying capacity,so as to meet the diverse needs of the public and thereby provide theoretical support and practical guidance for the sustainable development of Hefei’s greenway system.
基金supported by the National Natural Science Foundation of China(Grant No.62203362)the Natural Science Basic Research Program of Shaanxi(Grant No.2023-JC-QN-0569)。
文摘A situation maintenance-based cooperative guidance strategy is proposed to intercept a high-speed and high-maneuverability target via inferior missiles.Reachability and relative motion analyses are conducted to develop and pursue virtual targets,respectively.A two-stage guidance strategy under nonlinear kinematics is developed on the basis of virtual targets.The first stage optimizes the coverage and collision situation by pursuing virtual targets under specific angular constraints.The second stage subsequently intercepts the superior target based on the handover condition optimized by the first stage.Numerical simulation results are provided to compare the effectiveness and superiority of the proposed strategy with those of the reachability-based cooperative strategy(RCS),coverage-based cooperative guidance(CBCG)and augmented proportional navigation(APN)under various maneuvering modes.
基金Supported by Special Project of Performance Incentive and Guidance for Scientific Research Institutions in Chongqing(cstc2022jxjl80025).
文摘Pueraria montana is a perennial twining vine species of Pueraria in Leguminosae.Because of its fast growth and strong climbing and covering ability,this species has the potential threat of invading forest ecosystem.Based on the investigation of the occurrence and harm of P.montana in the"four mountains"forest ecosystem in the central urban area of Chongqing,combined with its growth habits and biological characteristics,we comprehensively evaluated its harm risk.The results show that P.montana is widely distributed in the forest ecosystem within the"four mountains"in the central urban area of Chongqing.On average,there was a distribution site of P.montana every 1.38 km of forest road with a scale of 0.43 hm 2/survey point and a coverage of about 42.86%.P.montana mainly occupy forest land by covering and climbing,threatening the original vegetation of forest land.It grows rapidly,and its ability of diffusion and colonization is very strong.The average length of new branches was 11.52 m/year,and the number of effective tillers was 5.25.According to National Forestry Pest Risk Analysis Index System,the risk assessment value of P.montana was 2.51,so it is a medium-risk harmful plant to forestry.It is suggested that the forestry department should strengthen the management of P.montana to prevent its further spread.
基金Key Project of Education Science Planning in Jiangsu Province in 2024“Research on Risk Generation and Governance of Education Intelligence from the Perspective of Social Narrative”(B-b/2024/01/192)。
文摘With the development of the international education environment and the continuous reform of higher education in China,the working pace in universities is accelerating,with higher requirements for university work and increasingly apparent pressure on teachers.Young teachers in Chinese universities are prone to occupational stress.In addition to undertaking teaching,research,and other tasks,they feel anxious and at a loss when facing personal issues such as job promotion and taking care of their families.This article selects young teachers from some universities in China as research subjects and uses a questionnaire survey method to understand the current situation and sources of pressure on young teachers in universities,so as to focus on and alleviate their stress in a targeted manner.
文摘The digital economy has injected continuous momentum into the development of urban economy and plays a positive and important role in the transformation and upgrading of urban energy consumption.Specifically,the digital economy can significantly improve the efficiency of urban energy consumption by virtue of its distinctive characteristics of low pollution and high efficiency.Moreover,empowered by the digital economy,the pace of transformation and upgrading of high-pollution traditional industries has been accelerated.Particularly importantly,the urban energy consumption structure has been optimized and adjusted through the indirect role of intermediate factors.From this perspective,studying the current situation and countermeasures of urban energy consumption under the digital economy holds important practical significance both in theory and practice.This paper first briefly summarizes the relevant literature on the impact of the digital economy on the energy consumption structure;then,it focuses on detailed data to explore the current situation of urban energy consumption under the digital economy model;finally,based on the summary of the current situation,it puts forward practical and feasible suggestions,hoping to provide a decision-making basis for the implementation of policies in different types of cities and offer innovative ideas for promoting the high-quality development of urban energy systems.
文摘Animal husbandry is an essential pillar sector in China.However,the wastewater including a mixture of feces,urine,and flushing water from livestock and poultry farming poses serious environmental risks if not properly managed or over-applied.This paper analyzes the existing challenges in the utilization of livestock manure,focusing on source control,process management,and end-use treatment.To address these issues,it proposes establishing a sustainable long-term mechanism.Key recommendations include enhancing source control,strengthening policy support to alleviate the financial burden on enterprises,aligning with market demands,intensifying the promotion of technologies and equipment development,and improving manure quality.In addition,advocating for grain-efficient animal husbandry and promoting diversified utilization through bio-chain approaches are essential.
文摘College English teaching is a crucial component of higher education.Enhancing college students’English learning outcomes has long been a primary focus for educators.With the continuous evolution of educational philosophies,traditional college English teaching methods no longer meet the learning needs of contemporary students.Situational cognitive learning theory emphasizes learner-centered approaches and highlights the contextual and practical application of knowledge,offering innovative perspectives for reforming college English teaching.When applied effectively,situational cognitive learning theory can optimize teaching methods and significantly improve learning outcomes.This paper explores the connotation and characteristics of situational cognitive learning theory,evaluates its applicability in college English teaching,and discusses its practical implementation in this context.The aim is to provide theoretical and practical references for improving the quality of college English education.
