浙苏皖赣鲁农民享有基本体育服务现状调查与对策研究

为全面了解广大农民开展全民健身活动享有基本体育服务的情况，以浙、苏、皖、赣、鲁5省部分农村、农民为研究对象，采用文献资料调研、问卷调查、访问调查及逻辑分析等方法，从3个不同的层面，分别对乡镇、行政村为农民提供基本体育服务以及农民享有基本体育服务的现状进行了广泛的社会调查，并对调查结果进行了分析与研究。针对农村开展全民健身活动中存在的主要问题，提出要使广大农民享有基本的体育服务，政府需要为处于弱势地位的农村提供更多的保障，加大对村级体育扶持和帮助的力度，在人、财、物等方面优先为行政村开展全民健身活动提供必要的条件等对策与建议。     

政府网站信息交互服务中功能体验指标的构建与测度研究

[目的/意义]结合政府网站功能,对公众视角下政府网站功能体验量化方法进行探讨,探究公众在使用政府网站时的真实感受和想法。[方法/过程]从政府网站功能、功能体验几个方面对相关理论、概念进行了回顾与梳理。通过文献分析总结出实验操作中需要量化的指标并探讨测度方法,通过访谈法从主观角度筛选指标,从主客观两个角度来量化政府网站功能体验。[结果/结论]将政府网站提供的功能和公众体验相结合,确定测度指标和用户体验描述指标,为量化公众视角下政府网站功能体验提供了思路,为后续实验研究提供了依据。     

学术期刊载文的测度研究

文章针对人们对学术期刊载文量的绝对数量指标和主观评价标准的单一化误解误用现象，在普赖斯指数的概念基础上开发了关于学术期刊载文量的五种相对性测度，并讨论了这五种相对性测度对载文量隐藏信息的显示作用。     

网络舆情场中信息受众观点测度的机理及路径分析

[目的/意义]整合定性与定量的舆情研究视角,统一多模态研究对象,实现网络舆情信息受众的观点测度,可修复网络舆情分析与治理的理论与实践裂痕。[方法/过程]通过引入网络舆情场的概念,对网络舆情信息受众、受众观点测度的内涵进行诠释,就网络舆情场与信息受众观点测度的逻辑关系加以辩证讨论。[结果/结论]提出网络舆情场内舆情受众观点测度机理和具体测度路径,为后续网络舆情场中的网络舆情信息分析、多维度信息受众观点测度,受众认知规律发现,网络舆情监督和管控限制等层面的研究做相应铺垫。     

Precision measurement of the Newtonian gravitational constant

The Newtonian gravitational constant G, which is one of the most important fundamental physical constants in nature, plays a significant role in the fields of theoretical physics, geophysics, astrophysics and astronomy. Although G was the first physical constant to be introduced in the history of science, it is considered to be one of the most difficult to measure accurately so far. Over the past two decades, eleven precision measurements of the gravitational constant have been performed, and the latest recommended value for G published by the Committee on Data for Science and Technology (CODATA) is (6.674 08 ± 0.000 31) × 10⁻¹¹ m³ kg⁻¹ s⁻² with a relative uncertainty of 47 parts per million. This uncertainty is the smallest compared with previous CODATA recommended values of G; however, it remains a relatively large uncertainty among other fundamental physical constants. In this paper we briefly review the history of the G measurement, and introduce eleven values of G adopted in CODATA 2014 after 2000 and our latest two values published in 2018 using two independent methods.     

基于野外测量生成GIS数据方法分析

地理信息系统的核心,就是获取数据。搜集精准数据,才能描画完备的测量图。为满足测量需求,应不断深入解析,提供实时特性的精准数据。获取的GIS数据,被用在野外范畴的测量之中。确认数据生成特有的路径,提升GIS测定的精准性,便利后续的导入数据。     

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.     

Preparing the Next Generation of Educational Measurement Specialists: A Call for Programs With an Integrated Scope and Sequence

The field of educational measurement has evolved considerably since the first doctoral programs were established. In response, programs have typically tacked on courses that address newly developed theories, methods, tools, and techniques. As our review of current programs evidences, this approach produces artificial distinctions among topics and techniques that are in fact a tightly coupled whole. This position paper advocates a redesign of the scope and sequence for doctoral programs focused on the preparation of the next generations of educational measurement specialists; a redesign that reflects the full life‐cycle of instrument development and use.     

用测量不确定度GUM表示测量误差的方法

测量不确定度GUM的评定与表示是一个较新的概念,其应用具有广泛性和实用性。用测量不确定度来表示测量误差的方法,是科技交流和国际贸易的迫切要求。它使各国进行的测量及其所得结果可以进行相互比对,以取得相互间的承认或共识,从而受到了国际组织和各国计量部门的高度重视。     

基于网络问答社区的话题识别与分析——以知乎“老年人”话题为例

[目的/意义]针对目前基于网络的话题识别与分析方法的局限性,提出针对网络问答社区的话题识别与分析方法,为此类网站的话题识别与分析提供参考。[方法/过程]以改进的中文分词技术为基础,构建网络问答社区的话题识别指标,通过线性加权方式计算权重,结合关键词提取方法确定话题关键词,对话题关注焦点进行提取,对分布情况进行测度。依据所提出的改进方法,以知乎网站为数据来源,从话题关键词、关键词分布以及热点子话题3个角度对"老年人"话题焦点进行识别与分析。[结果/结论]研究表明,该方法具有科学性和可行性,不仅拓展了社会问题的分析数据源,也为"积极开展应对人口老龄化行动"提供了决策依据。