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从“情境-模型”双向建构看数学建模与数学分析素养 被引量:1
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作者 杨元超 《黑河学院学报》 2017年第8期163-164,共2页
核心素养,数学核心素养,数学建模、数学分析素养等关键词引起了很多专家和学者的兴趣和研究。从"数学情境"到"数学模型",从"数学模型"到"数学情境",包含了实践到理论,又从理论到实践的辩证认... 核心素养,数学核心素养,数学建模、数学分析素养等关键词引起了很多专家和学者的兴趣和研究。从"数学情境"到"数学模型",从"数学模型"到"数学情境",包含了实践到理论,又从理论到实践的辩证认识过程:一方面帮助学生理解和分析数学情境的数学本质,认识其数学模型;另一方面通过数学模型的学习,可以帮助其理解和解释数学情境。数学建模、数学分析的核心素养,只有在生活中、教学中不断地渗透和深化,才能切实的提升,最终养成用数学的语言表达世界的习惯,成为一个有数学建模和数学分析素养的人。 展开更多
关键词 “情境-模型”双向建构 数学建模素养 数学分析素养 核心素养
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“情境——模型”双向建构的小学数学教学设计原则探究 被引量:7
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作者 杨元超 《赤峰学院学报(自然科学版)》 2017年第8期225-227,共3页
教学设计发展至目前已然成为了一门非常全面系统的科学.教学设计的制作与开展必须要遵循或依据教学设计原则.在进行"情境-模型"双向建构的小学数学教学设计时应注意教学情境数学化、教学过程活动化、教学内容问题化、教学形... 教学设计发展至目前已然成为了一门非常全面系统的科学.教学设计的制作与开展必须要遵循或依据教学设计原则.在进行"情境-模型"双向建构的小学数学教学设计时应注意教学情境数学化、教学过程活动化、教学内容问题化、教学形式趣味化、教学结构生动化等原则,还需要把握好从"情境"到"模型"的建构,从而实现从"模型"到"情境"的建构. 展开更多
关键词 “情境-模型” 双向建构 小学数学 教学设计原则
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AUTONOMOUS AGENT FRAMEWORK AND ITS DECISION-MAKING
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作者 李斌 朱梧槚 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2005年第1期59-63,共5页
Autonomy, a key property associated with the agent, is an important topic in the current research of the agent theory. Although no definition of the agent autonomy is universally accepted, an important aspect of the a... Autonomy, a key property associated with the agent, is an important topic in the current research of the agent theory. Although no definition of the agent autonomy is universally accepted, an important aspect of the agent autonomy is the decision-making capability of the agents. This paper investigates the autonomy of the agent, presents a framework for autonomous agent and discusses its decision-making process. Started with introducing a language for representing autonomous agent, a framework is proposed for modeling autonomous agent based on a BDI model and the situation calculus. Finally, a kind of decision-making process of the autonomous agent is presented. 展开更多
关键词 autonomous agent agent theory BDI model situation calculus DECISION-MAKING
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Study based on "Situational Rationality" hypothesis for customer market classification model 被引量:1
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作者 LI Chang-qing WANG Xiao-lei Yang Xinjiletu 《Chinese Business Review》 2009年第3期33-45,63,共14页
The traditional market segmentation was based on "transcendental rationality" or "Situational Rationality", studies shows that it had disadvantages. This paper states the "Situational" integrated rationality hyp... The traditional market segmentation was based on "transcendental rationality" or "Situational Rationality", studies shows that it had disadvantages. This paper states the "Situational" integrated rationality hypothesis and then comes up with the market segmenting models and classification algorithm basing on this hypothesis. This algorithm combined the Rough Set theory and Neural Networks in application, which overcome the dilemma that caused complicated network structure and long training time by only using Neural Networks and influenced the classification precision caused by noise disturbance by only using Rough Set methods. Finally, the paper did a comparison experiment between the traditional method and the method we came up, the results shows that the model and algorithm has its advantage on every aspects. 展开更多
关键词 segmenting Situational Rationality Rough Set Neural Networks
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Spatio-temporal Changes in Wildlife Habitat Quality in the Middle and Lower Reaches of the Yangtze River from 1980 to 2100 based on the InVEST Model 被引量:19
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作者 LI Qing ZHOU Yong +1 位作者 Mary Ann CUNNINGHAM XU Tao 《Journal of Resources and Ecology》 CSCD 2021年第1期43-55,共13页
The Yangtze River(YZR) regions have experienced rapid changes after opening up to economic reforms, and human activities have changed the land cover, ecology, and wildlife habitat quality. However, the specific ways i... The Yangtze River(YZR) regions have experienced rapid changes after opening up to economic reforms, and human activities have changed the land cover, ecology, and wildlife habitat quality. However, the specific ways in which those influencing factors changed the habitat quality during different periods remain unknown. This study assessed the wildlife habitat quality of the middle and lower YZR in the past(1980–2018) and in future scenarios(2050, 2100). We analyzed the relationships between habitat quality and various topological social-economic factors, and then mapped and evaluated the changes in habitat quality by using the Integrated Valuation of Environmental Services and Tradeoffs(InVEST) model. The results show that the slope(R = 0.502, P < 0.01, in 2015), elevation(R = 0.003, P < 0.05, in 2015), population density(R = –0.299, P < 0.01, in 2015), and NDVI(R = 0.366, P < 0.01, in 2015) in the study area were significantly correlated with habitat quality from 2000 to 2015. During the period of 1980–2018, 61.93% of the study area experienced habitat degradation and 38.07% of the study area had improved habitat quality. In the future, the habitat quality of the study area will decline under either the A2 scenario(high level of population density, low environmental technology input, and high traditional energy cost) or the B2 scenario(medium level of population density, medium green technology and lack of cooperation of regional governments). The results also showed that habitat in the lower reaches or north of the YZR had degraded more than in the middle reaches or the south of YZR. Therefore, regional development should put more effort into environmental protection, curb population growth, and encourage green technology innovation. Inter-province cooperation is necessary when dealing with ecological problems. This study can serve as a scientific reference for regional wildlife protection and similar investigations in different areas. 展开更多
关键词 land use change habitat quality trade-off InVEST model scenario simulation
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