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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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Validation of a FFQ (Food Frequency Questionnaire) for Older People
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作者 Jose Eduardo Corrente Dirce Maria Lobo Marchioni Regina Mara Fisberg 《Journal of Life Sciences》 2013年第8期878-882,共5页
Nutrition data for older adults is an area that has few studies mainly in Brazil. Due to the importance to know the behavior of this age group, the aim of this study was to develop and validate a frequency food questi... Nutrition data for older adults is an area that has few studies mainly in Brazil. Due to the importance to know the behavior of this age group, the aim of this study was to develop and validate a frequency food questionnaire (FFQ) for older people in Brazil. It was considered a sample of 73 subjects from the city of Avar6, Sao Paulo, Brazil, and it was applied three 24-hour recalls and a FFQ developed for adults. Data from the three 24-hour recalls were transformed in nutrient intake as well as the data from FFQ. Statistical analysis was performed in order to get correlations between data from the mean of three 24-hour recalls and FFQ for some nutrients. It was found high correlations among them, concluding that the FFQ is valid to get nutrient intakes for older people. 展开更多
关键词 Older people food frequency questionnaire CORRELATIONS nutrient intake.
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