Automatic measurement of key ski jumping phases and temporal events with a wearable system

We propose a new method, based on inertial sensors, to automatically measure at high frequency the durations of the main phases of ski jumping (i.e. take-off release, take-off, and early flight). The kinematics of the ski jumping movement were recorded by four inertial sensors, attached to the thigh and shank of junior athletes, for 40 jumps performed during indoor conditions and 36 jumps in field conditions. An algorithm was designed to detect temporal events from the recorded signals and to estimate the duration of each phase. These durations were evaluated against a reference camera-based motion capture system and by trainers conducting video observations. The precision for the take-off release and take-off durations (indoor < 39 ms, outdoor = 27 ms) can be considered technically valid for performance assessment. The errors for early flight duration (indoor = 22 ms, outdoor = 119 ms) were comparable to the trainers' variability and should be interpreted with caution. No significant changes in the error were noted between indoor and outdoor conditions, and individual jumping technique did not influence the error of take-off release and take-off. Therefore, the proposed system can provide valuable information for performance evaluation of ski jumpers during training sessions.     

湖北省生鲜农产品冷链物流现状与对策研究

随着生活水平的提高,人们对生鲜农产品的需求越来越多,对冷链物流的要求也越来越高。文章对湖北省生鲜农产品冷链物流现状作了分析,针对冷链物流存在的问题,提出了发展生鲜农产品冷链物流的对策。     

“共享理念”下低利用价值文献联合馆藏体系的构建——以上海地区高校联合馆藏中心的构想为例

根据国外储存图书馆的实践、国内对此课题的研究以及我国三级文献保障制度和两大步的构想目标,针对上海地区各高校图书馆普遍存在馆藏空间不足的危机,提出建立上海地区高校联合馆藏体系的构想,并对体系建立过程中存在的低利用价值文献的确定、文献的所有权及文献的数字化等关键问题提出解决办法。     

Institutional complementarities: The origins of experimentation in China’s plug-in electric vehicle industry

A vast literature on technology transitions within industries suggests that early phases of new technologies are marked by periods of intense experimentation, but we know little about the conditions under which these periods emerge. We apply inductive, grounded theory-building techniques to examine what prompts firms to experiment across one emerging technology platform—plug-in electric vehicles (PEVs)—in China. Triangulating annual vehicle make and model sales data from 2003 to 2016 (plus monthly data from 2010 to 2016); 112 English and Mandarin archival documents from industry, academic, and news outlets; and 51 semi-structured interviews with industry, government, and academic stakeholders, we develop four in-depth case studies. We find that in contrast to the innovation trajectories of multinational and Chinese arms of joint venture (JV) firms, independent domestic Chinese firms (those with no history of international JV partnerships) are undertaking significant experimentation across multiple levels—infrastructure, core system, subsystem, and component—of the emerging PEV technology platform. We propose the concept of “institutional complementarities” to describe how interactions among institutions—here the national JV regulation and local market support and subsidies—may have turned regional markets into protected laboratories, extending the incubation periods for independent domestic firm experimentation. While this diverse experimentation may be an important antecedent of technology transition, consolidation induced by national policy standardization or competitive pressure may be required for PEV innovations to scale beyond their early, protected regional markets.     

学术期刊共媒体云与自媒体库互动融合的构想

【目的】 结合新时代对学术期刊发展提出的新要求,探讨学术期刊媒体融合的宏观架构设计和有效路径。【方法】 采用文献法明确当前研究的趋势和不足;采用访谈法了解学术期刊四大利益主体的特征、需求及学术期刊媒体融合面临的问题;采用实地调查法明确学术期刊媒体融合的现状与需求,并提出新的媒体融合模式。【结果】 创造性地提出“共媒体云+自媒体库”的互动融合模式,根据学术期刊准产业化运营的整体构想,着眼于学术期刊核心竞争力整合学术内容生产的核心环节,联结四大利益主体,通过相辅相成、互动提高的运行机制促进学术期刊的共生发展。【结论】 “共媒体云+自媒体库”互动融合打破期刊层面和个体层面的传统壁垒,加强两者间的知识共享与互动反馈,突显并强化各自的优势：共媒体云能突显学术期刊的核心业务,兼容多种媒体形态,有利于学术期刊核心竞争力的提升,实现可持续发展;自媒体库有利于促进学术期刊及相关利益主体的有效互动,拓展稿件来源和传播渠道,从源头上提升学术内容生产水平,实现学术利益共同体的互促共赢。     

International Cooperation and Globalization of the Magazine Industry in China

The cooperation of Chinese and foreign magazine publishers started from 1981, featured by Computer World. However, the much more influential copyright cooperation should be the publication in Shanghai of ELLE in 1988 and the cooperation between Trends Publications and Hearst Corporation in 1998. In August 2005, working together with China Pictorial Press, VOGUE published VOGUE China in China and this can be regarded as the most influential fashion magazine. The present situation of Chinese periodical market shows that the main competition is between foreign and native capital. To some extent, the global publishers working with Chinese publishers present several areas of concern, danger and risk. In the context of globalization, what we should do is find the common points and how to integrate external business methods, not only chasing profit in a single way and only pursue immediate capital gains.     

解读《中华人民共和国物权法》关于业主的建筑物区分所有权的规定

《物权法》第六章专章规定了建筑物区分所有权制度,使关乎千家万户的房屋产权有了真正的法律界定和保护依据。为使《物权法》的建筑物区分所有权制度能真正得到实施,业主们需要认清自己权利和义务,树立所有权意识,并通过公民的参与来推动国家配套法规与实施细则的出台。秉承上述两点,文章解读和阐释了《物权法》中建筑物区分所有权的内容、建筑物区分所有权客体的权利归属及建筑物区分所有权业主之间的关系。     

高职专业结构与区域产业结构的对接研究——以湖北职业技术学院为例

文章论述了高职专业结构与区域产业结构对接的重要性和必要性;分析了湖北职院专业结构现状及湖北省和孝感市三大产业结构现状;针对区域经济、社会发展的要求,结合学院背景、发展过程和专业特色,提出专业设置和发展的一些建议。     

前路松解后路固定融合术治疗难复性寰枢关节脱位

目的:探讨经口咽松解同时后路内固定植骨融合术治疗难复性寰枢关节脱位手术效果。方法:12例难复性寰枢关节脱位患者,其中齿突陈旧性骨折畸形愈合7例,横韧带断裂3例,枕颈畸形2例。10例有脊髓损伤的症状、体征。先行经口咽入路的寰枢关节松解或切除术,同期行后路寰枢或枕颈固定植骨融合术,后路固定方法包括寰枢侧块钉板固定10例和枕颈固定2例。术后不用外固定。结果:10例获得解剖复位,2例基本复位,其中2例行齿突切除。12例随访9~26个月,平均11个月,全部病例均获骨性融合。术前有脊髓症状的10例术后功能评价(JOA标准)为优7例,良2例,可1例。术中出现硬膜破裂1例。结论:前路松解后路固定融合对治疗难复性寰枢关节脱位有良好的治疗效果。     

中华文字——文明古国源远流长的语言符号

文字是记录语言的符号,中国是世界上最早创造和使用文字的国家。我国的象形文字比较及致少要早二千余年。殷墟甲骨文并不是最早的文字,我国文字已有八千年以上的历史。从距今七八千年的甘肃大地湾刻划符号到距今六千年前的西安半坡刻划符号,再到五六千年前的良渚文化、龙山文化等等象形文字符号……,中国文字源远流长,是世界上唯一从古至今仍在流行、通用并充满生机和活力的古老文字。中国文字是中华各民族的先民共同创造的,不应称作“汉字”。