The achievement progresses of investigation and studies on marine hazardous geology are summarized and presentsd in the late 20 century in China. The importance, research value and present-day studies of marine hazard...The achievement progresses of investigation and studies on marine hazardous geology are summarized and presentsd in the late 20 century in China. The importance, research value and present-day studies of marine hazardous geology, a newly developing branch of geoscience, are well expatiated. Several often confused concepts and theories are explained and redefined here. The comment on the means of investigations, assessment of marine hazardous geology, as well as its evolution, innovation, existing questions and future tasks are also introduced and presented. The concepts of 'hazard geology', geohazard', 'map of marine hazard geology', 'integrated evaluaton on seafloor stablity' are respectively discussed, including their definition, research objects, methods and contents. The types and classification of marine hazardous geology, principles and methods of marine hazardous geology map compilation, the assessment methods and models of marine hazardous geology environment and seafloor stability and so on are also discussed.展开更多
So far, most theories of economics and management are under the same premise that the natural resources are never exhausted and regenerated repeatedly. The magic of technology brought by industrial revolution endowed ...So far, most theories of economics and management are under the same premise that the natural resources are never exhausted and regenerated repeatedly. The magic of technology brought by industrial revolution endowed human with power that they can do anything they want. It also turns natural resources into industrial energy and enhances the development of human society and civilization. Human uses direct comparison of input and output and the satisfaction degree of demands to measure the production activities, the economic benefit and management performance, regardless of the change of ecology that serves as the natural resources. However, since the ecological environment has been changing worse recently and natural disaster happened frequently human's dream of conquering the nature has been broken.展开更多
consists of forecasting for the total reserves of regional mineral resources and evaluation,compreIn general,based on evaluated objects and factors involved,evaluation of mineral resources hensive evaluation of region...consists of forecasting for the total reserves of regional mineral resources and evaluation,compreIn general,based on evaluated objects and factors involved,evaluation of mineral resources hensive evaluation of regional mineral resources, and economic and technical evaluation of deposits. Here a region can be a country, a province, or a mining area, while a deposit is mainly related to a single type of mineral, although it can contain more than one types of minerals. In the past, to assess mineral resources was primarily to evaluate and forecast the total reserves of regional mineral resources. With the advancement of science, technology, and economy, the evaluation of mineral resources has developed from forecasting the reserves of them to comprehensively evaluating them on the basis of numerous factors.展开更多
By reviewing the theories and methods of resource and environmental carrying capacity evaluation and suitability evaluation of land and space development,it provides theoretical and technical support for rational layo...By reviewing the theories and methods of resource and environmental carrying capacity evaluation and suitability evaluation of land and space development,it provides theoretical and technical support for rational layout and optimization of land and space development pattern.From the aspects of resource carrying capacity,environmental carrying capacity,the importance of ecological protection,the suitability of agricultural production,and the suitability of urban construction,we sort out domestic and foreign documents.The evaluation of resource carrying capacity has changed from single-factor evaluation to multi-factor comprehensive evaluation.At present,the optimization of land use pattern based on the“three-generation”space is still under exploration,it is not enough to systematize and summarize the thought of optimizing the spatial pattern of the national territory.The theoretical framework,model,method and index of“dual evaluation”of territorial space need to be improved continuously,it also needs the scientific analysis and cognition from the natural direction to the human location direction and the spatial equilibrium state as the new driving force.展开更多
本研究采用CiteSpace和Excel软件,对1982—2022年Web of Science核心合集的国际教师焦虑文献进行可视化分析。研究发现:1)教师焦虑研究发文量自2008年来明显增多,近三年发文势头强劲;发文区域主要来自土耳其、美国和中国等;2)实证研究...本研究采用CiteSpace和Excel软件,对1982—2022年Web of Science核心合集的国际教师焦虑文献进行可视化分析。研究发现:1)教师焦虑研究发文量自2008年来明显增多,近三年发文势头强劲;发文区域主要来自土耳其、美国和中国等;2)实证研究方法多样化,研究对象涉及各发展阶段和不同层次学校的教师,特别是数学和二语教师;3)前沿话题包括教师焦虑的多维影响因素、测量工具、焦虑反应和调节策略等三个方面。最后,本文从多个方面探讨了其对我国外语教师焦虑研究的启示。展开更多
目的探讨基于问题的学习(problem based learning,PBL)优化教学法在核医学教学中的价值。方法选择2021年3月—2022年4月桂林医学院临桂临床医学院2018级、2019级临床医学专业本科生共88名,随机分为PBL优化试验组、PBL传统组和对照组,每...目的探讨基于问题的学习(problem based learning,PBL)优化教学法在核医学教学中的价值。方法选择2021年3月—2022年4月桂林医学院临桂临床医学院2018级、2019级临床医学专业本科生共88名,随机分为PBL优化试验组、PBL传统组和对照组,每组分别为28、31、29名。对照组采用传统教学模式,PBL传统组采用PBL教学法,PBL优化试验组采用PBL优化教学方法。对3组满意度评分、基础知识及临床应用考试成绩进行比较。结果 PBL优化试验组、PBL传统组、对照组满意度、基础知识成绩差异无统计学意义(P>0.05)。PBL优化试验组临床应用成绩最高,PBL传统组次之,对照组最低,差异有统计学意义(P <0.05)。结论在核医学教学中,应用PBL优化教学法可避免普通PBL法的“发散”等弊端,兼顾传统教学知识点的归纳与PBL教学法的自主学习应用等优势,使教学目的“传授知识、学以致用”得到更好的体现,有利于提高临床应用成绩。展开更多
This paper is devoted to study the multiobjective system programming under the assumption that some of the problem parameters are random variables. A method called Interactive Reference Goal Satisfied Degree and Feasi...This paper is devoted to study the multiobjective system programming under the assumption that some of the problem parameters are random variables. A method called Interactive Reference Goal Satisfied Degree and Feasible Degree (IRGSD-FD) is developed to solve stochastic multiobjective problems. It is an interactive method providing a so-called `dialogue' between the user and the model, the decision maker having the option conducting the search process for the (α, β)-efficient solutions by modifying the initial conditions according to the partial results obtained. During the iterations, the decision maker can improve upon the reference goal or called aspiration level already attained by one objective function as well as upon the probability of reaching the corresponding objective or called satisfied degree (or both), or/and the probability of satisfying the constraint or called feasible degree already attained by the constraint. Finally, the application of IRGSD-FD method in the resource allocation problem is discussed with a case study for project investment management.展开更多
文摘The achievement progresses of investigation and studies on marine hazardous geology are summarized and presentsd in the late 20 century in China. The importance, research value and present-day studies of marine hazardous geology, a newly developing branch of geoscience, are well expatiated. Several often confused concepts and theories are explained and redefined here. The comment on the means of investigations, assessment of marine hazardous geology, as well as its evolution, innovation, existing questions and future tasks are also introduced and presented. The concepts of 'hazard geology', geohazard', 'map of marine hazard geology', 'integrated evaluaton on seafloor stablity' are respectively discussed, including their definition, research objects, methods and contents. The types and classification of marine hazardous geology, principles and methods of marine hazardous geology map compilation, the assessment methods and models of marine hazardous geology environment and seafloor stability and so on are also discussed.
文摘So far, most theories of economics and management are under the same premise that the natural resources are never exhausted and regenerated repeatedly. The magic of technology brought by industrial revolution endowed human with power that they can do anything they want. It also turns natural resources into industrial energy and enhances the development of human society and civilization. Human uses direct comparison of input and output and the satisfaction degree of demands to measure the production activities, the economic benefit and management performance, regardless of the change of ecology that serves as the natural resources. However, since the ecological environment has been changing worse recently and natural disaster happened frequently human's dream of conquering the nature has been broken.
文摘consists of forecasting for the total reserves of regional mineral resources and evaluation,compreIn general,based on evaluated objects and factors involved,evaluation of mineral resources hensive evaluation of regional mineral resources, and economic and technical evaluation of deposits. Here a region can be a country, a province, or a mining area, while a deposit is mainly related to a single type of mineral, although it can contain more than one types of minerals. In the past, to assess mineral resources was primarily to evaluate and forecast the total reserves of regional mineral resources. With the advancement of science, technology, and economy, the evaluation of mineral resources has developed from forecasting the reserves of them to comprehensively evaluating them on the basis of numerous factors.
基金This paper is supported by National Natural Science Foundation of China(Grant Nos.41661109,4261043)Guangxi Science and Technology Base and Talent Special Project(Grant No.Guike AD19245041)Nanning Normal University Doctoral Research Project(Grant No.0819-2019L07).
文摘By reviewing the theories and methods of resource and environmental carrying capacity evaluation and suitability evaluation of land and space development,it provides theoretical and technical support for rational layout and optimization of land and space development pattern.From the aspects of resource carrying capacity,environmental carrying capacity,the importance of ecological protection,the suitability of agricultural production,and the suitability of urban construction,we sort out domestic and foreign documents.The evaluation of resource carrying capacity has changed from single-factor evaluation to multi-factor comprehensive evaluation.At present,the optimization of land use pattern based on the“three-generation”space is still under exploration,it is not enough to systematize and summarize the thought of optimizing the spatial pattern of the national territory.The theoretical framework,model,method and index of“dual evaluation”of territorial space need to be improved continuously,it also needs the scientific analysis and cognition from the natural direction to the human location direction and the spatial equilibrium state as the new driving force.
文摘本研究采用CiteSpace和Excel软件,对1982—2022年Web of Science核心合集的国际教师焦虑文献进行可视化分析。研究发现:1)教师焦虑研究发文量自2008年来明显增多,近三年发文势头强劲;发文区域主要来自土耳其、美国和中国等;2)实证研究方法多样化,研究对象涉及各发展阶段和不同层次学校的教师,特别是数学和二语教师;3)前沿话题包括教师焦虑的多维影响因素、测量工具、焦虑反应和调节策略等三个方面。最后,本文从多个方面探讨了其对我国外语教师焦虑研究的启示。
文摘目的探讨基于问题的学习(problem based learning,PBL)优化教学法在核医学教学中的价值。方法选择2021年3月—2022年4月桂林医学院临桂临床医学院2018级、2019级临床医学专业本科生共88名,随机分为PBL优化试验组、PBL传统组和对照组,每组分别为28、31、29名。对照组采用传统教学模式,PBL传统组采用PBL教学法,PBL优化试验组采用PBL优化教学方法。对3组满意度评分、基础知识及临床应用考试成绩进行比较。结果 PBL优化试验组、PBL传统组、对照组满意度、基础知识成绩差异无统计学意义(P>0.05)。PBL优化试验组临床应用成绩最高,PBL传统组次之,对照组最低,差异有统计学意义(P <0.05)。结论在核医学教学中,应用PBL优化教学法可避免普通PBL法的“发散”等弊端,兼顾传统教学知识点的归纳与PBL教学法的自主学习应用等优势,使教学目的“传授知识、学以致用”得到更好的体现,有利于提高临床应用成绩。
文摘This paper is devoted to study the multiobjective system programming under the assumption that some of the problem parameters are random variables. A method called Interactive Reference Goal Satisfied Degree and Feasible Degree (IRGSD-FD) is developed to solve stochastic multiobjective problems. It is an interactive method providing a so-called `dialogue' between the user and the model, the decision maker having the option conducting the search process for the (α, β)-efficient solutions by modifying the initial conditions according to the partial results obtained. During the iterations, the decision maker can improve upon the reference goal or called aspiration level already attained by one objective function as well as upon the probability of reaching the corresponding objective or called satisfied degree (or both), or/and the probability of satisfying the constraint or called feasible degree already attained by the constraint. Finally, the application of IRGSD-FD method in the resource allocation problem is discussed with a case study for project investment management.
