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41.
On association in a copula with time transformations 总被引:2,自引:0,他引:2
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In the course of a freeze-cleave study on intercellular junctions in the regenerating rat liver, we observed an unusual array of intramembranous particles located in regions of contact between endothelial cells lining the hepatic sinusoids. These arrays were characterized by an accumulation of particles which resembled a zonula occludens in their linear deployment but differed in that the contact regions were composed of individual particles which remained separated from each other by regular particle-free intervals. 相似文献
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To examine associations between participation in Tulsa’s preschool programs and a set of middle-school attitudes, we used propensity score weighting to compare the Tulsa Public Schools (TPS) pre-K participants and, separately, the Community Action Project (CAP) Head Start participants to students who had attended neither TPS pre-K nor Head Start as 4-year olds. In the context of very few significant findings, positive associations were found between pre-K participation (in both the TPS pre-K and CAP Head Start programs) and the students’ attitudes about grit as assessed with the goal-setting subscale. Head Start participation was also associated with more cautionary views of risky sexual behavior. The results are discussed with regard to prevailing hypotheses guiding research on long-term pre-K impacts, measurement challenges, and expectations of pre-K education. 相似文献