体育预测方法评述

对体育预测方法作了整体的分析，讨论了定量预测和定性预测的优缺点，分析了体育复杂大系统组合预测技术，以及解决定性和定量相结合的综合集成方法，并探讨了体育预测方法的新发展。     

新中国八套成人广播体操的比较研究

本文通过文献资料法 ,查阅了新中国八套成人广播体操的图解和相关的文章 ,通过八套广播体操的基本动作和内容的比较 ,分析了它们的共同点和各自的特点 ,并为广播体操的进一步发展提出了如下建议 :1、广播体操适合于会操 ,但组织形式要灵活。 2、广播体操的动作既要简单易学 ,又要高效。 3、音乐要欢快奔放 ,节奏感强。 4、应缩短每套操的使用周期 ,加快新操的研制     

汉译英口译教学中的增补问题

受社会习俗影响产生的专有名词和带有化色彩的习语，以及一些常识性词语是汉译英口译过程中需要解决的问题。由于化习俗上的差别，必要的信息增补有助于听话人对原义的正确理解。常用的有特殊名词、习语和引语的增补、常识性知识的注解和创造语境等增补方法。     

图书馆文献存量追求及其动态无效实证分析

长期以来,我国图书馆文献存量追求现象普遍,致使文献存量积累过度。通过对我国公共图书馆文献存量增长与服务增长的动态效率测算可以看出,我国公共图书馆文献存量追求的平均结果是动态无效的。图书馆应综合分析导致文献存量动态无效的原因,充分认识文献存量增长对服务增长的关联与影响,完善图书馆经费体制,调整文献结构,从而提高文献资源质量与服务能力。     

Effects of purposeful soccer heading on circulating small extracellular vesicle concentration and cargo

BackgroundConsidering the potential cumulative effects of repetitive head impact (HI) exposure, we need sensitive biomarkers to track short- and long-term effects. Circulating small extracellular vesicles (sEVs) (<200 nm) traffic biological molecules throughout the body and may have diagnostic value as biomarkers for disease. The purpose of this study was to identify the microRNA (miRNA) profile in circulating sEVs derived from human plasma following repetitive HI exposure.MethodsHealthy adult (aged 18–35 years) soccer players were randomly assigned to one of 3 groups: the HI group performed 10 standing headers, the leg impact group performed 10 soccer ball trapping maneuvers over 10 min, and the control group did not participate in any soccer drills. Plasma was collected before testing and 24 h afterward, and sEVs were isolated and characterized via nanoparticle tracking analysis. Next-generation sequencing was utilized to identify candidate miRNAs isolated from sEVs, and candidate microRNAs were analyzed via quantitative polymerase chain reaction. In silico target prediction was performed using TargetScan (Version 7.0; targetscan.org) and miRWalk (http://mirwalk.umm.uni-heidelberg.de/) programs, and target validation was performed using luciferase reporter vectors with a miR-7844-5p mimic in human embryonic kidney (HEK) 293T/17 cells.ResultsPlasma sEV concentration and size were not affected across time and group following repetitive HI exposure. After 24 h, the HI read count from next-generation sequencing showed a 4-fold or greater increase in miR-92b-5p, miR-423-5p, and miR-24-3p and a 3-fold or greater decrease in miR-7844-5p, miR-144-5p, miR-221-5p, and miR-22-3p. Analysis of quantitative polymerase chain reaction revealed that leg impact did not alter the candidate miRNA levels. To our knowledge, miR-7844-5p is a previously unknown miRNA. We identified 8 miR-7844-5p mRNA targets: protein phosphatase 1 regulatory inhibitor subunit 1B (PPP1R1B), LIM and senescent cell antigen-like domains 1 (LIMS1), autophagy-related 12 (ATG12), microtubule-associated protein 1 light chain 3 beta (MAP1LC3B), integrin subunit alpha-1 (ITGA1), mitogen-activated protein kinase 1 (MAPK1), glycogen synthase kinase 3β (GSK3β), and mitogen-activated protein kinase 8 (MAPK8).ConclusionCollectively, these data indicate repetitive HI exposure alters plasma sEV miRNA content, but not sEV size or number. Furthermore, for the first time we demonstrate that previously unknown miR-7844-5p targets mRNAs known to be involved in mitochondrial apoptosis, autophagy regulation, mood disorders, and neurodegenerative disease.     

家庭背景对高等教育数量和质量获得的影响——社会分层的视角

本文利用2002年北京师范大学"大学毕业生就业意向与就业行为"课题组的调查数据,在中国高等教育逐渐进入大众化阶段的背景下,考察父母亲的教育背景对子女在高等教育阶段教育数量和质量获得方面的影响。实证结果发现,整体而言,父母亲的教育背景对于子女接受高等教育的层次与质量仍然有显著的促进作用,社会分层导致的教育差异依然存在于实施严格选拔的高等教育系统中。     

随机需求条件下库存控制策略研究

在库存控制问题中,客户的需求常常带有一定的随机性,分析了随机需求下的库存成因,提出了随机需求下的库存控制策略。     

The influence of heterogeneous exposure and pre-deliberation queries on pretrial publicity effects

Prior research on pretrial publicity has produced mixed results and a roughly equal number of studies show an effect, show no effect, or show mixed results. We explored the effects of (a) homogenous vs. heterogeneous exposure (whether deliberating jurors were all exposed to the same publicity or not) and (b) pre-deliberation queries as potential contributors to mixed results. We found an effect for positive but not negative publicity on conviction rates but not evidence ratings. Exposure heterogeneity appears to explain these differences and pre-deliberation queries did appear to play some role in the obtained outcomes. Overall these findings do not replicate a robust publicity effect and future research should consider how homogeneous exposure and pre-deliberation opinion queries influence results.     

业余条件下的丝网印刷

直接感光丝网漏印法的技术流程介绍     

运动技术训练手段量最优分配方案的实现

作者在[1]总共用贴近度的方法对在技术训练中如何进行控制训练,做了初步的讨论,结果不够理想.原因是它属于一种近似解.为了寻找训练手段量最优分配方案的实现,作者在本文中用求解模糊关系方程的方法,获得了这一问题的最终解决,也是对作者[1]中的结果进一步深化.因此,让机器来代替教练员的工作,模糊运动技术训练的安排,成为人工智能中的专家咨询系统,完全有可能变成现实.