Investigation of blood pulse PPG signal regulation on toe effect of body posture and lower limb height

Objective: To study the regulation of blood pulse volume via photoplethysmography (PPG) signal detected from toe, while the lower limb is passively raised in different height positions. Methods: Use a modified non-invasive PPG technique to detect the blood pulse signal on toe with infrared (IR) photo sensor. A protocol consisting of two postures, i.e., supine and 45° reclining, was designed to conduct laboratory trial in this study. During the period of performing the protocol of these postures, the lower limb was passively raised from the heights of 10 cm to 60 cm randomly and individually with sponge blocks underneath the foot. Results: In the supine posture, the higher the foot was passively raised, the more the blood PPG signal decreased. In the 45° reclining posture, the blood PPG signal increased at the beginning and then decreased in the foot height position from 10 cm to 60 cm. In both postures the normalized AC signal changes significantly while the normalized DC signal changes little. Conclusion: The toe PPG signals can obviously indicate the regulated blood volume change with the designated postural procedures due to the heart level position.     

应用型本科院校学风建设长效机制构建策略研究

应用型本科教育作为一种新时期的高等教育类型,在我国高等教育体系中占有不可替代的特殊地位和作用。良好的学风是一所高校宝贵的无形资产。加强学风建设是培养和造就高素质人才的关键性要素,是提高教育教学质量和人才培养质量的重要保证。本文就应用型本科院校学风建设长效机制的必要性、所存在的问题以及构建策略进行阐述。     

论现代市场经济条件下家庭消费结构变动规律

家庭消费作为重要的市场需求,其结构在收入、市场供求、价格等各种因素的影响下不断发生变动,而这种变动及其规律既是微观经济运行的重要内容,又是研究市场供求关系及其运行机制,引导社会生产的重要依据。     

Word processing in dyslexics

Dyslexic children (n=21, mean age=10.2 years) were compared with normal readers of the same age, normal readers of the same reading-age, and poor readers of the same reading-age on measures of phonological decoding and automatic word processing. Three different tasks, varying in phonological demand, were used: a naming task, an auditory-visual matching task, and a lexical decision task. On each task, word-pseudoword profiles were obtained to test phonological decoding skills and unspeeded-speeded profiles were assessed to test automaticity in word processing. Main results indicated that dyslexics have a deficit in automatic phonological decoding skills. The results are discussed within the framework of the phonological deficit and the automatization deficit hypothesis.     

探在社区的弱势群体中开展体育康复运动的途径

目前我国社区的弱势群体的健康状况不容乐观,作为体育工作者,有义务协助社区开展全民健身运动,倡导采用体育康复运动来促进社区弱势群体的身体的康复。在市场经济背景下群众体育社会化发展,使“让更多人参与”的目标不断成为现实。社区体育康复健身活动开展系列化,增强全民体质,改善健康状况,形成健康的生活方式,提高全民健康素质。     

壳聚糖在水环境处理中的应用

壳聚糖作为一种来源广泛的无毒无害的高分子聚合物,因其在酸性溶液中其氨基可结合H ,是一种典型的阳离子聚电解质,能够吸附絮凝废水中有机物,同时其氨基还能鳌合去除许多重金属离子,是一种优良的水处理剂。     

针灸学教学资源库建设的思考

分析针灸推拿专业中针灸学教学资源库建设的必要性,总结目前我校针灸推拿专业中针灸学教学资源库建设的状况,思考针灸推拿专业中针灸学资源库建设今后的发展方向。     

费马光行最速原理的另一种数学论证

利用初等函数的单调性、连续性论证了著名的费马光行最速原理 .     

发明人主导职务成果转化机制的实证研究——以甲醇制取低碳烯烃成果转化为例

从知识的视角,一项职务成果就是一个由显性知识和隐性知识构成的知识包,分属于科研单位和发明人控制,因此,是否赋予发明人主导职务成果转化,既是一个重大的理论问题,也是一个重大的政策问题。论文首先提出研究假设,即由于显性知识与隐性知识的控制权分离,导致转化主体分别与研发主体、消费主体、融资主体分别出现技术距离、市场距离和融资距离;而且这三类距离越大,越需要发明人来主导职务成果转化;随后,采用案例研究方法,以甲醇制烯烃成果转化案例进行实证检验。论文的实证结论显示,采用创业分拆方式来推进发明人主导职务成果转化,即把发明人及其职务成果整体孵化转化为企业性质的转化主体,由发明人主导职务成果转化,消除了这三类距离,促进职务成果顺利转化。     

中文信息处理中的语义关系表示探析

根据目前中文信息处理的现状对自然语言在句法结构与语义结合方面的需求，对美国加州大学伯克利分校构建的框架网络工程进行探索与研究，详细分析框架网络数据库中最重要的框架关系，并利用这些关系将词汇进行联系形成网状数据库，目的在于利用词与词间的关系进行信息抽取或信息检索时，能够方便准确地进行信息处理并得到理想结果。