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关键词： 技术进步   体育科技   运动水平   因果关系检验  

摘要： 采用格兰杰因果关系检验法,检验了我国技术进步与运动水平提高之间的因果关系。检验结果表明,我国体育专利和非体育专利均是获世界冠军个人项数的格兰杰原因。因此得出结论,我国体育技术进步是运动员竞技水平提高的直接原因之一,我国非体育技术进步也对运动员竞技水平提高具有促进作用。研究结果表明,"科技兴体"战略的实施效果是显著的,在今后发展体育科技的过程中需要将更多的新技术应用于我国体育科技的发展,将更多的科技人员吸引到我国体育科技的发展中来。

关键词： 木材检验   企业经营   管理   作用  

摘要： 木材查验作为木材公司要求的木材营销方法,将木材再次重造成型等业务的不可或缺的凭证,一定意义上作为增加木材使用功率,保护林业资产的一个无可替代的方法。木器加工公司的长久存在,与木材检验的有效切实可行性息息相关,文章讲述了木材查验业务在木器加工公司营销管控中存在的必要性。

关键词： 木材检验接收   交接验收作用   拨付作用  

摘要： 本文从木材检验工作贯穿于木材生产流通领域全过程,其重要作用尤为突出。笔者依据多年生产实践经验,针对贮木场及山上林场在接收木材,交接验收、缴库验收、木材拨付时,木材检验发挥的作用谈几点看法。

关键词： 痕迹检验   分析鉴定   交通事故   处理   重要作用   改进意见  

摘要： 痕迹检验鉴定可以帮助我们确定交通事故案件的性质，直接揭露交通事故真相，审查、判断言词证据的真实可靠性。这无异于扩大、延伸了办案人员的感知能力。另外，痕迹的检验与鉴定还有助于交通肇事逃逸案件的侦破。理论和案例充分显示了痕迹检验鉴定在交通事故处理中的重要作用。

关键词： chemical shift perturbation   cross saturation   fragment based screening   initiation factors   nuclear magnetic resonance   paramagnetic relaxation enhancement   residual dipolar couplings   small angle X-Ray scattering reconstitution assay   translation initiation   weak interactions  

摘要： Weak protein-protein interactions are critical in numerous biological processes. Unfortunately, they are difficult to characterize due to the high concentrations required for the production and detection of the complex population. The inherent sensitivity of NMR spectroscopy to the chemical environment makes it an excellent tool to tackle this problem. NMR permits the exploration of interactions over a range of affinities, yielding essential insights into dynamic biological processes. The conversion of messanger RNA to protein is one such process that requires the coordinated association of many low-affinity proteins. During start codon recognition, eukaryotic initiation factors assemble into high-order complexes that bind messanger RNA and bring it to the ribosome for decoding. Many of the structures of the eukaryotic initiation factors have been determined;however, little is known regarding the weak binary complexes formed and their structure-function mechanisms. Herein, we use start codon recognition as a model system to review the relevant NMR methods for the characterization of weak interactions and the development of small molecule inhibitors.

关键词： Watermelon   Nitrogen   Spacing   Yield and Yield Attributes  

摘要： This study is undertaken to investigate the effect of nitrogen and spacing on yield and yield attributes of watermelon (Citrullus lanatus) (Thumb Menst). Field experiments were conducted during 2011 wet season at Abubakar Tafawa Balewa University, Bauchi and Bauchi State Agricultural Development project, Teaching and Research farms, Bauchi. The treatments used consisted of four levels of nitrogen (0, 25, 50 and 75kg N ha -1 ) and three plant spacings (1.0x1.0m, 1.5. m x 1.5m and 2.0m x 2.0m). The treatments were factorially combined and arranged in a randomized complete block design. Results indicate that nitrogen significantly increased number of flowers per plant, number of fruits per plant, total fruit yield per hectare and marketable fruit yield per hectare. Days to 50% flowering were also attained earlier with application of nitrogen. Spacing however had no significant effect on yield and other yield characters observed. Result indicate among many others that existence of significant interaction effect between nitrogen and spacing on fruit number per plant at Bauchi State Agricultural Development Project (BSADP) experimental site. A combination of 50kg N ha -1 and 1.5m x1.5m spacing provided best yield in the study area.

关键词： 检验医学   社区   卫生服务   运行模式   作用   应用   分析  

摘要： 目的:探析检验医学在社区卫生服务中的运行模式与作用。方法:选取18个社区的1150名人员,其中,社区医护工作人员200名,社区患者或居民950名,采用问卷调查方法进行调查分析。结果:检验医学在社区卫生服务应用中,主要以开展常规检验为主,其中,约96%的社区医护工作人员认为,检验医学进行社区常规卫生检验服务应用,有利于疾病的及早诊断,并且有利于提高医护人员的治疗水平;约97%的的社区患者或居民认为,检验医学用于进行社区常规检验项目开展,为社区群众就医提供了很大的便利性。结论:检验医学在社区卫生服务中的运行应用,受到社区医护人员以及患者、居民的普遍认可,具有较大的积极作用和意义。

关键词： 生化检验   肾上腺皮质疾病   诊断作用  

摘要： 目的:对生化检验在肾上腺皮质疾病诊断中的作用进行探讨和分析。方法:选择2012年2月至2013年9月在我院进行治疗的70例肾上腺皮质疾病患者的临床资料进行研究和分析。将这些患者分为对照组和研究组(对照组20例患者,研究组50例患者),为对照组患者进行常规检验,对研究组患者进行生化检验,对两组患者进行检验的准确率进行观察和分析。结果:在对照组患者中有15例患者检验有效,有5例患者检验无效,检验的有效率为75%。在研究组患者中有48例患者检验有效,有2例患者检验无效,检验的有效率为96%。两组患者检验的有效率相比较,差异显著,具有统计学意义(P<0.05)。结论:对肾上腺皮质疾病患者进行生化检验能显著提高诊断的准确率,值得在临床上推广应用。

关键词： process control charts   pattern recognition   neural networks   fitted line  

摘要： The correct, prompt recognition and analysis of unnatural and significant patterns in Schewhart's control charts are very important since they remind out-of-control conditions. In fact, pattern extraction increases the sensitivity of charts when identifying out of control conditions. Artificial neural networks have been used to identify unnatural patterns in many research studies due to their high efficiency in pattern recognition. In most of such studies, there is a significant risk of misclassification of highly sensitive patterns. To put it more clearly, the proposed models offered for the recognition of patterns with low parametric coefficients are mistaken. This study, offers a model for the recognition and analysis of basic patterns in process control charts using LVQ and MLP networks along with a fitted line analysis. In this model, not only does risk of misclassification at different levels of sensitivity decrease remarkably, but there will also be the possibility for recognition and analysis when basic pattern occur simultaneously. The efficiency and effectiveness of the model are shown by conducting tests based on simulation.

关键词： URBAN planning   REMOTE-sensing images   DATA analysis   DECISION trees  

摘要： Understanding the factors that influence the performance of classifications over urban areas is of considerable importance to applications of remote-sensing-derived products in urban design and planning. We examined the impact of training sample selection on a binary classification of urban and nonurban for the Denver, Colorado, metropolitan area. Complete coverage reference data for urban and nonurban cover were available for the year 1997, which allowed us to examine variability in accuracy of the classification over multiple repetitions of the training sample selection and classification process. Four sampling designs for selecting training data were evaluated. These designs represented two options for stratification (spatial and class-specific) and two options for sample allocation (proportional to area and equal allocation). The binary urban and nonurban classification was obtained by employing a decision tree classifier with Landsat imagery. The decision tree classifier was applied to 1000 training samples selected by each of the four training data sampling designs, and accuracy for each classification was derived using the complete coverage reference data. The allocation of sample size to the two classes had a greater effect on classifier performance than the spatial distribution of the training data. The choice of proportional or equal allocation depends on which accuracy objectives have higher priority for a given application. For example, proportionally allocating the training sample to urban and nonurban classes favoured user's accuracy of urban whereas equally allocating the training sample to the two classes favoured producer's accuracy of urban. Although this study focused on urban and nonurban classes, the results and conclusions likely generalize to any binary classification in which the two classes represent disproportionate areas.