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141.
Haicheng Li Yinji Ma Ziwei Liang Zhouheng Wang Yu Cao Yuan Xu Hua Zhou Bingwei Lu Ying Chen Zhiyuan Han Shisheng Cai Xue Feng 《国家科学评论(英文版)》2020,7(5):849
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. 相似文献
142.
Giving parents a choice with regard to their children's education has been central to the political discourse of school reform at least since the 1988 Education Reform Act (ERA). With regard to children with a Statement of special educational needs (SSEN), a plethora of policies and laws have given parents the right not only to choose a school, but also to appeal to decisions in the best interest of their children. Yet, despite the discourse of school choice, the implementation and practice of such reforms is neither assured nor simple. Participants in this study indicated that they have little choice of suitable provision and are having to compromise either the academic or the social aspects of their child's schooling. This article argues that for many parents whose children have a Statement of SEN, the choice of a school is often a dilemma, as ‘nowhere seems to fit’. 相似文献
143.
张梅 《牡丹江教育学院学报》2011,(6):158-160
在翻译能力结构分析和培养策略探索的基础上,采用翻译测试和问卷调查两种实证研究的方式,着重考察了在多媒体网络环境下,“以学习者为中心”的“过程教学法”对学生翻译能力的影响。通过对实验组和控制组进行一个学期的培训后,数据分析结果表明,此教学法对提高学生的翻译能力具有明显成效。 相似文献
144.
从法律角度对武术商标存在的价值进行剖析,对认定武术商标申请主体进行了法律界定,并对集体商标、证明商标、驰名商标、特殊标志等4项武术基本商标形式的标准化思路进行初步探讨。 相似文献
145.
李梅 《蒙自师范高等专科学校学报》2015,(4):88-90
生态批评是当今世界上一个历久弥新的话题,它就是要"历史的揭示文化是如何影响地球生态的",而彝族诗人吉狄马加的《我,雪豹……——献给乔治.夏勒》就深刻的体现了他浓厚的生态意识,具有超越时代的历史意义。文章试图从生态批评的角度来解读这首诗歌,让诗人强烈的世界意识和生态伦理意识直观的呈现在读者面前,同时也让诗中对生态意识的思考和生态理想得到进一步升华。 相似文献
146.
Paloma Gonzlez‐Castro Marisol Cueli Dbora Areces Celestino Rodríguez Georgios Sideridis 《Learning disabilities research & practice》2016,31(3):142-155
Problem solving represents a salient deficit in students with mathematical learning difficulties (MLD) primarily caused by difficulties with informal and formal mathematical competencies. This study proposes a computerized intervention tool, the integrated dynamic representation (IDR), for enhancing the early learning of basic mathematical competencies and word problem solving skills. The goal was to compare and contrast the effects of IDR on the acquisition of informal and formal mathematical competencies in students with attention deficit/hyperactivity disorder (ADHD) and MLD. Participants were 216 students (6–9 years), who were classified into three groups: ADHD (n = 72), MLD (n = 82), ADHD and MLD (n = 62). They completed the Test of Early Mathematics Ability (Third Edition). The results showed that all three diagnosed groups improved significantly postintervention in all mathematical competencies, with the MLD‐only group benefiting the most at posttest. 相似文献
147.
148.
笔者在前人的研究基础上,从明洁的女性情爱这个视角对《诗经》进行浅析。《诗经》的女性情爱无论是内容还是表达方式都明净、清洁。这种现象也有其特殊的文化背景,那就是上古母系氏族遗风与周礼的制约。 相似文献
149.
Helen Askell‐Williams Rosalind Murray‐Harvey Michael J. Lawson 《The Teacher Educator》2013,48(4):237-263
Abstract Students develop robust mental models of teaching and learning during their school years, and as such, often teach as they were taught—possibly perpetuating practices that limit intellectual inquiry in classrooms. This paper reports on an analysis, using a conceptual framework and NUD?1ST software, of a cohort of 3rd‐year teacher education students' reflections on changes in their mental models following their experiences in a problem‐based learning (PBL) topic. Results provide evidence that students do report changing mental models in areas such as (a) the value of case studies for engaging with subject content, motivating learning, and connecting theory with practice; (b) self‐reflection and peer collaboration for cognitive and professional growth; and (c) processes of inquiry for developing self‐regulated learning practices. 相似文献
150.