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化学教学中分析对比法的应用
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作者 汪双林 《青海师专学报》 2003年第6期104-104,共1页
关键词 化学 教学过程 教学方 分析对比法
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松辽盆地南部海力锦铀矿床镭氡平衡系数计算方法研究 被引量:1
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作者 苏晓波 李继木 +4 位作者 宁君 王常东 王甲 臧亚辉 黄笑 《世界核地质科学》 CAS 2023年第3期805-814,共10页
镭氡平衡系数是地浸砂岩型铀矿勘查中重要的物探参数之一,能否正确计算镭氡平衡系数将直接影响铀矿床资源量估算结果的准确性。目前在实际工作中,镭氡平衡系数主要由物探参数孔观测法和伽马测井解释结果与取样分析结果对比法确定,而物... 镭氡平衡系数是地浸砂岩型铀矿勘查中重要的物探参数之一,能否正确计算镭氡平衡系数将直接影响铀矿床资源量估算结果的准确性。目前在实际工作中,镭氡平衡系数主要由物探参数孔观测法和伽马测井解释结果与取样分析结果对比法确定,而物探参数孔观测法又可分为平均值法和曲线拟合法。对松辽盆地南部海力锦地区姚家组下段地层的铀矿镭氡平衡系数进行了计算和研究,并对计算结果进行了对比与评价。两种方法在砂岩型铀矿镭氡平衡系数计算中都非常重要,可以相互验证。经过分析,物探参数孔观测法比伽马测井解释结果与取样分析结果对比法计算的镭氡平衡系数可信度更高。对于物探参数孔观测法的两种计算方法,曲线拟合法更接近氡气的恢复情况,可以避免观测值误差或氡气未达到平衡等因素导致计算结果不准确,结果更为合理。 展开更多
关键词 砂岩型铀矿 镭氡平衡系数 物探参数孔 分析对比法 海力锦地区
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海洋底栖古群落的识别与划分
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作者 曾勇 王占磊 孟祥芬 《中国矿业大学学报》 EI CAS CSCD 北大核心 2007年第1期1-6,共6页
在分析前人研究成果基础上,提出了识别与划分古群落的5条标准:1)同一古群落应处于相同的沉积环境中,时空分布上相邻的古群落形成于不同的自然地理环境;2)古群落化石群为原地埋藏;3)同一地层剖面中,属于同一古群落的不同层位中所含化石... 在分析前人研究成果基础上,提出了识别与划分古群落的5条标准:1)同一古群落应处于相同的沉积环境中,时空分布上相邻的古群落形成于不同的自然地理环境;2)古群落化石群为原地埋藏;3)同一地层剖面中,属于同一古群落的不同层位中所含化石相似率应明显高于不同古群落间的相似率;4)同一古群落的物种组成在不同地点或层位中可以重复出现;5)古群落划分可采用单门类或多门类划分法.结果表明,采用回归分析图解对比法建立区域性复合标准剖面,可以综合不同地层剖面的多种地质信息,最大限度地克服化石标本采集的不完备性和避免人为的主观臆断.通过实例的检验,在古群落识别与划分研究中,Jaccard相异系数是计算和判别古群落相似率高低的有效公式. 展开更多
关键词 古群落 识别与划分 回归分析图解对比法 长兴期 腕足动物
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Building Long-Term Care Insurance System in China 被引量:1
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作者 Juan Yang Li Hua Chen 《International English Education Research》 2015年第6期77-79,共3页
The objective is to explore the foundation of the elderly long-term care insurance system in China, which is to face the problem resulted from aging of the population. Adopting the contrastive analysis to introduce br... The objective is to explore the foundation of the elderly long-term care insurance system in China, which is to face the problem resulted from aging of the population. Adopting the contrastive analysis to introduce briefly the long-term care insurance system in German, Japan and America for our learning. Therefore, China's long-term care insurance system could not totally indiscriminately imitate the mandatory long-term care insurance system in German and Japan, it also could not copy the business model of nursing insurance system in America. The conclusion is that long-term care insurance system in China should use the experience of developed countries based on the basic national conditions, doing some relative works, such as establishing policies and regulations, strengthening personnel training, and improving the market specification. 展开更多
关键词 Aging of population Long-term care insurance FAMILY Medical expenses.
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Contrastive Analysis of the Middle Construction
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作者 张达球 徐克洛 《Journal of Donghua University(English Edition)》 EI CAS 2004年第5期155-159,共5页
The English Middle Construction (EMC), as a piculiar syntactic structure, shares its semantic features, but diversifies in its syntactic configuration compared with other languages. This paper tries to have a contrast... The English Middle Construction (EMC), as a piculiar syntactic structure, shares its semantic features, but diversifies in its syntactic configuration compared with other languages. This paper tries to have a contrast study of the Middle Construcitons between English and Chinese and find the two languages share the same semantic features that the incompatibility between the semantic quantitatives (SQs) of the Adverb (Adjunct in the syntactic term) and the SQs of the Verb denoted by the predicate of MC leads to the deactivization of the predicate by means of the Adjunct, functioning as a quantitative device, assign delimitation to the predicate, hence ensures the grammaticality of the construction. But syntatically, we agree that the NP Movement Approach accounts for the formation of EMC, while we argue in Chinese it is the verb raising that results in the MC. This paper first represents the structural representation of the English Middle Construction; then the structural analysis is elaborated in comparison with that in Chinese, based on the previous studies; and finally the motivations of the Ecs in the perspective of syntactic and semantic functions are explored and hence a new hypothesis is raised to probe the similar construction in Chinese. 展开更多
关键词 Middle Construction deactivization TELICITY Resultative
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Facility Layout Based on Sequence Analysis:Design of Flowshops
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作者 周瑾 吴智铭 《Journal of Shanghai Jiaotong university(Science)》 EI 2009年第6期686-689,共4页
A computer-aided method to design a hybrid layout--tree-shape planar flowlines is presented. In newtype fiowshop layout, the common machines shared by several flowlines could be located together in functional sections... A computer-aided method to design a hybrid layout--tree-shape planar flowlines is presented. In newtype fiowshop layout, the common machines shared by several flowlines could be located together in functional sections. The approach combines traditional cell formation techniques with sequence alignment algorithms. Firstly, a sequence analysis based cell formation procedure is adopted; then the operation sequences for parts are aligned to maximize machines adjacency in hyperedge representations; finally a tree-shape planar flowline will be obtained for each part family. With the help of a sample of operation sequences obtained from industry, this algorithm is illustrated. 展开更多
关键词 workshop layout flowlines sequence analysis sequence alignment algorithm
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