Wearable skin-like optoelectronic systems with suppression of motion artifacts for cuff-less continuous blood pressure monitor

According to the statistics of the World Health Organization, an estimated 17.9 million people die from cardiovascular diseases each year, representing 31% of all global deaths. Continuous non-invasive arterial pressure (CNAP) is essential for the management of cardiovascular diseases. However, it is difficult to achieve long-term CNAP monitoring with the daily use of current devices due to irritation of the skin as well as the lack of motion artifacts suppression. Here, we report a high-performance skin-like optoelectronic system integrated with ultra-thin flexible circuits to monitor CNAP. We introduce a theoretical model via the virtual work principle for predicting the precise blood pressure and suppressing motion artifacts, and propose optical difference in the frequency domain for stable optical measurements in terms of skin-like devices. We compare the results with the blood pressure acquired by invasive (intra-arterial) blood pressure monitoring for >1500 min in total on 44 subjects in an intensive care unit. The maximum absolute errors of diastolic and systolic blood pressure were ±7/±10 mm Hg, respectively, in immobilized, and ±10/±14 mm Hg, respectively, in walking scenarios. These strategies provide advanced blood pressure monitoring techniques, which would directly address an unmet clinical need or daily use for a highly vulnerable population.     

傅斯年的大学研究院所思想及其成因研究

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评析:从写作评估中的语域意识看第二语言语法能力与社会语言能力

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我国农村新课改面临的问题与发展走向

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莫迪利亚尼的独特艺术风格

莫迪利亚尼是一个有独特风格的画家、雕塑家。他以一种个性化的方式表现世界。其独特性在于他画作中永恒的忧伤 ,在于线条勾勒的无穷魅力 ,在于追求神似 ,表现人物的内心世界。莫迪利亚尼沟通了各门艺术之界限 ,以一种平和中的激情联系了传统与现代 ,表达了一个有诗人气质的画家对艺术的独特理解     

案例教学法在高校思想政治课教学中的意义及运用

高校思想政治教育的实效性不高是目前高校面临的主要问题,改革教学手段、采用新的教学方法提高教学质量,增强教学实效性刻不容缓。文章就改革教学手段方面,谈案例教学法在高校思想政治课教学中的意义与应用。     

Uses and Gratifications,Journalists’ Twitter Use,and Relational Satisfaction with the Public

This study employed the uses and gratification approach to investigate how journalists perceive relational satisfaction with the public on Twitter, specifically the associations between journalists’ motivations to use Twitter, their Twitter use, and their relational satisfaction with the public. Through a survey of South Korean journalists, this study revealed that journalists’ motivations for Twitter use are positively related to their job-related activities on Twitter (e.g., posting/sharing their news and interacting with audience), which consequently influences perceived relational satisfaction with the public. The findings provide new insight into an increasingly important part of the public’s engagement and news/information flows in the digital media environment. This study expands upon the literature by analyzing how journalists’ motivations for using Twitter and their job-related activities on Twitter are associated with relational satisfaction with the public.     

科技期刊数字优先出版问题与应对

科技期刊数字优先出版较好地解决了出版时滞长、学术论文难以快速出版等问题,加快了科技成果的传播速度.单篇优先灵活性大,出版速度更快;整期优先版面完整,灵活、便捷.纸质期刊出版后不宜覆盖数字优先版本,以解决版本冲突、DOI不确定等问题.同一文献无论数字优先还是纸质版,都应纳入文献引用频次统计.科技期刊出版工作更应强化互联网思维,尽快把数字出版文献纳入学术评价范畴,加强数字优先出版版权保护.无纸化网络出版是大势所趋,未来单篇数字优先出版将逐渐占据数字优先出版主导地位,乃至全部.期待依托网络时速性及大数据、云计算优势,构建独具特色、性格独特的科技期刊,促进学术环境健康发展.     

再论《吴医汇讲》为中国期刊的肇端

基于无限期出版的意图和具有定期或不定期连续出版的特征是期刊最根本的2个属性,提出了《吴医汇讲》第1卷单卷刊行传播和9册本、6册本、5册本、4册本分卷、分册刊行的文字证据和版本实物证据,彻底颠覆了认为其在”3个年份里2次刻成,故非连续出版物”的错误观点,再次巩固了其为中华第一刊的正确结论.     

肥胖的成因、危害及减肥手段

肥胖是当今运动医学、预防医学、临床医学、保健康复学关注的焦点，肥胖的形成与发展受多种因素影响，其根本原因是能量不平衡，即食物摄入与能量消耗间的失衡。本文综述了肥胖机制研究领域中具有代表性和一定影响的几种学说，以及较为普及的几种减肥方法，特别是运动减肥对人体的影响。