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两年内,同时与两个男人同居,并为他们打掉四个孩子的女孩——这就是我很熟悉又无法了解的何冰。用何冰自己的话说,她与张磊发生关系,完全是出于猎奇心理,其实和爱不爱的没什么大关系。也就是在何冰胡思乱想的时 相似文献
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The authors used a large sample of children (N ≈ 7,400) participating in the Early Childhood Longitudinal Study--Kindergarten Cohort (ECLS-K) to estimate kindergarten children's academic achievement growth trajectories in reading and mathematics. The authors were particularly interested in whether the growth trajectories of children with learning disabilities (LD) or speech language impairments (SLI)--as well as those of other groups of children--were consistent with a cumulative or compensatory developmental cycle. Both LD and SLI children displayed significantly lower levels of kindergarten reading achievement than nondisabled children. However, and over the subsequent 5 years of elementary school, only children with SLI lagged increasingly behind nondisabled peers in their reading skills growth. The authors observed a different pattern for mathematics achievement. Children with LD, but not SLI, lagged increasingly behind nondisabled children in their mathematics skills growth. The authors also observed some consistency in "poor-get-poorer" effects across reading and mathematic achievement for additional population subgroups. Those kindergarten children who were from lower socioeconomic status families, who were African American, and who more frequently displayed learning-related behavior problems initially had lower levels of reading and mathematics achievement and also lagged increasingly behind in their acquisition of these skills over time. Some groups of children, including those with SLI, experience a cumulative rather than a compensatory cycle of achievement growth. 相似文献
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哈里·波特,这个西方魔(mo)法界的小神童,一个戴(dai)着眼镜的小男孩,骑着他的飞天扫帚,挥着魔杖念着咒语,凭借顽强的信念,和他的朋友们一起,与邪恶的伏地魔作斗争,于是一 相似文献
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We present a microfluidic approach to characterizing temperature-dependent biomolecular interactions. Solvated L-arginine vasopressin (AVP) and its immobilized RNA aptamer (spiegelmer) were allowed to achieve equilibrium binding in a microchip at a series of selected temperatures. Unbound AVP were collected and analyzed with matrix-assisted laser desorption∕ionization mass spectrometry (MALDI-MS), yielding melting curves that reveal highly temperature-dependent zones in which affinity binding (36–45 °C) or dissociation (25–33 °C and 50–65 °C) occurs. Additionally, temperature-dependent binding isotherms were constructed; from these, thermodynamic quantities involved in binding were extracted. The results illustrated a strong change in heat capacity of interaction for this system, suggesting a considerable thermodynamic influence controlling vasopressin-spiegelmer interaction. 相似文献
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In this paper, a poly(dimethylsiloxane) microchip with amperometric detector was developed for the electrophoretic separation and determination of neurotransmitters. For increasing the separation efficiency, the microchannel is modified by polystyrene sulphonate∕polystyrene nano-sphere self-assembly coating. A stable electro-osmotic flow (EOF) and higher separation efficiency are obtained in proposed modified microchannel. Under optimized conditions, dopamine, epinephrine, catechol, and serotonin are acceptably baseline separated in this 3.5 cm length separation channel with the theoretical plate number from 4.6?×?10(4) to 2.1?×?10(5) per meter and resolution from 1.29 to 12.5. The practicability of proposed microchip is validated by the recovery test with cerebrospinal fluid as real sample which resulted from 91.7% to 106.5%. 相似文献
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<正>职场学习与绩效(WLP)一度被称为"培训与发展(T&D)或人力资源开发(HRD)"。该领域的许多人士经常问及这样一个问题:"人力绩效改进(HPI)与组织发展(OD)之间的区别是什么?"这个问题看起来简单,实际要复杂得多。在业内,人们对这两个领域的论述可谓多矣。人力绩效改进一度被称为"人力绩效技术(HPI)""人力绩效提升(HPE)""绩效咨询(PC)";而组织发展有时被称为"组织效能(OE)",经常与变革管理(CM)联 相似文献