绘画观察谈

绘画观察的目的是为绘画有选择地寻求自然形态中那些具有审美价值的因素，只有运用正确的观察方法才能全面地认识客体。这就需要对客体有选择地、深入细致地进行观察，需要对客体进行整体的及在思维的参与下的观察。同时，要提高主体的主观认识、艺术修养和审美能力，才能更好地把握客体中的审美因素。要了解不同化背景和观念形成的不同的观察方式，才能更有助于绘画的表现。     

关于成长和爱的寓言--读张爱玲的《茉莉香片》

本文通过在场和细读文本的方式对《茉莉香片》做出解读，分析作者如何把握主人公复杂矛盾的心理状态、并探讨其心理状态的内部渊源。     

有机合成反应选择性及其控制策略

有机合成是化学研究领域中最具有魅力的。结构复杂、性质多元、应用广泛的有机物及其合成方法学,让人赞叹与探求。文章用科学方法论总结了有机合成中的化学选择性、区域选择性和立体选择性的规律及其热力学和动力学控制策略,提出了综合利用其控制原理解释或预测竞争性反应产物的基本方法。     

Ova and out: Using twins to estimate the educational returns to attending a selective college

Research has shown that attending a relatively selective four-year college over a less selective alternative is positively related to bachelor's degree completion. This paper revisits that question with a novel dataset of over 11,000 sets of twins in the United States and information on colleges to which they apply, enroll, and potentially graduate. I show that a student's probability of bachelor's degree completion within four years increases by 5 percentage points by choosing an institution with a median SAT score 100 points higher than the alternative. Moreover, the estimated magnitude of impact is insensitive to several methodologies, including OLS, twin fixed effects, and controlling for the application portfolio. This suggests that in certain contexts, sources of bias perceived as barriers to obtaining causal estimates of the returns to college selectivity, such as unobserved family characteristics and student aspiration, may be of little concern.     

9-蒽醛-（4-硝基）苯腙对氟离子高选择比色传感

合成9-蒽醛-（4-硝基）苯腙,用紫外光谱仪研究了其与阴离子识别作用。实验表明：以二氯甲烷为溶液,该受体对F-阴离子有灵敏的光谱响应,吸收光谱由422nm红移至604nm,溶液的颜色由黄色转变为蓝色,可见该受体是氟离子灵敏的比色传感试剂。     

新时代语文教学改革双渠道模式摭探

新课程改革的全面推进,强调教学模式的全面性和具体化,强调教学模式的时效性和多样化,强调教学模式的选择性和实用化,提倡合作、自主、探究的教学模式,主张学生在教师的引导下主动地学习,富有个性地学习,创造性地学习。文章结合教学实践,对新时代语文教学改革双渠道模式进行探究。     

基金绩效评估中的证券选择和市场时机选择

本文对证券选择和市场时机选择能力的研究方法、结合及存在的问题进行了对比分析和探讨。介绍了有关模型，分析了研究中样本、参量选取及处理的方法，对不同模型的实证结果进行了比较。     

Selectivity in Learning: A Theme in the Application of Whitehead’s Theory of Prehensions to Education

This paper, which is particularly centered on the student’s learning process, is the first half of a detailed study of selectivity in Whitehead’s philosophy of education. Here, by setting forth the analogy between the creative process exhibited in Whitehead’s Theory of Prehensions and the learning process through an interpretation of the term, ‘prehending subject’ as ’learner,’ I argue that selectivity, via ‘negative prehensions,’ is the efficient motive power at work in the process of learning. Various concrete classroom examples of selectivity are alluded to, which lend support to this thesis. With clues from the Aims of Education, by reading the theory of prehensions with some conceptual modifications made for the purposes of education, I present the perspective that, as one side of a logical contrast, Whitehead’s theory of prehensions can be said to be conducive to a critical pedagogy.     

制约体全息存储容量的重要因素

分别讨论了光学极限、角度选择灵敏度、存储介质动态范围等几个制约体全息存储容量的重要因素,估算出各对应的极限存储容量并进行比较、分析。     

蛋白质分子印迹技术研究进展

蛋白质分子印迹聚合物具有高度选择吸附性，能专一性识别蛋白质模板分子．本文综述了蛋白质分子印迹聚合物的制备、选择性识别机制及其选择性吸附的影响因素，并对蛋白质分子印迹技术的应用前景进行了展望。