基于CNKI的我国数字期刊研究状况分析

摘 要 【目的】揭示我国数字期刊研究的演进历程、研究水平和未来走向。【方法】 检索中国知网（CNKI）关于数字期刊的相关文献,运用文献计量学的方法进行统计与分析。【结果】年度发文量、作者、文献下载次数和被引频次、作者单位来源、文献来源期刊以及关键词出现频次等几个方面的数据,反映出当前我国数字期刊的研究日益深化,体现出理论与实践相结合的特点。【结论】构建合理的研究队伍,平衡出版流程研究的着力点,加强研究视角的广阔性和前瞻性才能更好地促进数字期刊的发展。     

浅述农业转基因作物及其食用安全评价对策研究进展

农业转基因技术现已发展成为农业科研领域的核心技术,有效地缓解了国家粮食短缺、环境污染和人口问题,然而,近来一些关于转基因作物存在风险性、具有毒性的研究报道为转基因作物的研发蒙上了一层阴影。据数据分析,我国已没有拒绝转基因的资本,因此,建立一套完善的转基因农作物安全评价体系显得尤为重要。通过综述农业转基因作物发展、食用安全评价对策的研究,以期为完善我国转基因作物的安全评价体系提供参考。     

手术室舒适护理的研究进展

手术室舒适护理是以满足患者健康需求为目的的新型护理服务,给服务对象人性化的关怀和照顾。文章概述了手术患者不舒适的因素(心理、环境、手术体位、手术疼痛感、气管导管刺激);舒适护理(术前、术中和术后舒适护理)的重要性。     

竞技能力系统构型研究进程与展望

研究方法:运用文献法、逻辑分析法、归纳演绎法,对现有竞技能力系统构型进行了归纳分析。研究目的:旨在完善与发展竞技能力结构理论,也为未来相关课题的研究提供参照。研究结果和结论:在诸多竞技能力结构模型与理论中,每种模型与理论对竞技实践都有其积极的一面,研究者都从自己的角度建立了适合自己研究领域的模型与理论,但又都不能很好地概括竞技能力系统构型。也许不能用一个模型来展示所有竞技项目运动员的竞技能力结构。为此,探究性地提出了竞技能力系统模型建构未来发展展望。     

Intentional thought dynamics during exercise performed until volitional exhaustion

Using a non-linear approach, intentional dynamics of thoughts were examined during constant cycling performed until volitional exhaustion. Participants (n = 12) completed two sessions at 80% W_max. Their (1) intrinsic thought dynamics (i.e., no-imposed thoughts condition) and (2) intentional thought dynamics (i.e., imposed task-unrelated thoughts condition; TUT) were recorded and then classified into four categories: internal and external TUT (TUT-I, TUT-E) and external and internal task-related thoughts (TRT-E, TRT-I). The probability estimates for maintaining each thought category stable, the rate of switching from one category to another, and the entropy dynamics along the testing procedure were assessed and compared through time phase. Friedman ANOVA tests revealed a significant effect of effort increase on thought contents only in the imposed TUT test. While TUT-I probabilities decreased significantly (P < .001) as effort increased, TRT-I probabilities increased (P < .05). Moreover, the entropy to the entire thought dynamics increased at the outset of task performance and decreased upon approaching volitional exhaustion (P < .001). As time spent in constant effort increased, and volitional exhaustion approached, task relatedness (TUT, TRT), direction (internal, external), and entropy of thought contents changed unintentionally providing further evidence for a nonlinear dynamics of attention focus.     

DX营业厅幕墙装饰工程施工要点分析

根据DX营业厅幕墙装饰工程施工的特点,对施工平面布置、施工进度计划、关键施工工艺、要点、难点进行了分析并提出解决方案。     

微博的产生、运用与人的解放

微博产生的初衷是用于公司内部的信息传达,但自产生后就成为人们日常生活中不可或缺的信息传播平台。它打破了人类交流的方式,拓展了人类生活的空间,充实了人们的交流内容,追踪、记录着人们的生活轨迹。目前微博运作的主要作用是：企业打造形象、推介产品的重要平台;个人形象塑造的重要途径;表达各种社会意见的重要渠道;改进社会管理的重要抓手。这种传播平台带着使用者个人的意志走向他人、走向社会,是进入互联网时代,尤其是进入自媒体时代,人类的又一次大解放。而这种全面解放的无限释放,最终导致社会组织结构与社会管理方式的某种程度的调整。     

长三角地区技术进步与人力资本对就业的影响

随着长三角地区经济的快速发展,劳动力需求不断增长,但受多重因素的限制,劳动力供给增速缓慢,致使劳动力市场供求结构失衡。选取长三角地区近24年的相关数据,对该地区的技术进步、人力资本等与就业进行双对数面板回归。实证结果表明：在长三角地区,技术进步与人力资本对就业均起较大促进作用。     

食品着色剂的应用研究进展

对食品着色剂的应用与研究状况进行了较为系统的综述,并对着色剂的特点、稳定性、安全性及应用进行了探讨,最后指出了食品着色剂应用研究中有待解决的问题及今后的发展动向。     

Light emitting diodes and the lighting revolution: The emergence of a solid-state lighting industry

Emergence of new industries from evolving technologies is critical to the global economy, yet has been relatively understudied due to the paucity of available data. This study draws lessons on industry emergence, by analyzing how a solid-state lighting (SSL) industry grew out of light emitting diode (LED) technologies that evolved for half a century, with participation by tens of thousands of researchers in universities, national laboratories, and firms. Using data on publications, patents, and firms combined with business history we trace the evolution of SSL through a succession of market niches. At times a few researchers with unorthodox research approaches made breakthroughs that greatly advanced particular technology trajectories and pushed LED research in unexpected directions. A succession of LED market niches advanced the technology and provided profits to incentivize continuing research while reducing cost and improving efficacy of LEDs. Innovating firms developed a thicket of patents and captured substantial profit, but were embroiled in extensive litigation that was ultimately resolved through cross-licensing. A major new generation of lighting products is now disrupting the traditional lighting industry. Although the leading incumbent lighting firms all invested early and heavily in SSL, the industry's future leadership is uncertain.