Subjects: Library Science，Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] Based on the author's descriptive evaluation of his research and the critical citations of later researchers, the abstract and citation corpus of the breakthrough research are used to extract the feature words. Feature words can be used to understand the abstract and citation corpus features of the breakthrough research and contribute to the identification of breakthrough research. [Method/process] Key documents selected by Science as "Breakthrough of the Year" and "key publications" of Nobel Prize winners were selected as breakthrough research corpus data. Feature words were extracted by integrating abstracts and citation corpus of the paper. In the feature word extraction, the Stanford CoreNlp tool was used to perform word frequency statistics on the corpus, and the feature words were filtered in combination with expert opinions. Then we used the semantic relationship of medical texts to semantically expand feature words, which were used as the seed words. Finally, the retrieval and recognition effects of the abstract and citation feature words were further compared by the recall rate and the precision rate. [Result/conclusion] In the breakthrough research corpus, we selected 8 feature tokens of abstract corpora and 8 feature tokens of citation corpora. In the retrieval and recognition of feature words, the recall rate of the extended feature words of abstracts and citations is the highest, the precision of citation feature words is the highest. The comprehensive effect of the recall rate and precision of citation expansion feature words are better.
Subjects: Biology >> Zoology submitted time 2018-12-25 Cooperative journals: 《动物营养学报》
Abstract：本试验通过研究β-葡聚糖对生长育肥猪生长性能、胴体性能和肉品质的影响，旨在探明β-葡聚糖在生长育肥猪饲粮中的应用效果及适宜添加量。试验采用单因子试验设计，选取96头20 kg左右的健康“杜×长×大”猪，按体重和性别比例随机分为4个组，每组6个重复，每个重复4头猪。对照组饲喂基础饲粮，试验组在基础饲粮中分别添加50、100和200 mg/kg β-葡聚糖。试验期为103 d。结果表明：1)与对照组相比，饲粮添加100 mg/kg β-葡聚糖显著提高生长育肥猪平均日增重(P<0.05)，显著降低料重比(P<0.05)，显著改善饲粮干物质、能量和粗蛋白质消化率(P<0.05)；2)与对照组相比，饲粮添加100 mg/kg β-葡聚糖显著提高猪只胴体长和肌肉pH(P<0.05)，显著降低肌肉滴水损失（P<0.05），显著改善肉色（P<0.05），同时显著提高肌肉中肌苷酸含量（P<0.05），改变猪肉中饱和脂肪酸和单不饱和脂肪酸的组成比例，从而改善肉的风味。综上，饲粮中添加100 mg/kg β-葡聚糖可改善生长育肥猪的生长性能，提高养分消化率，提高胴体长，改善猪肉品质。
Subjects: Library Science，Information Science >> Information Science submitted time 2018-03-29
Abstract： The study on systematic identification of “Sleeping Beauty” (SB) publications and on their awaking mechanisms will promote the strategic preservation of documents in libraries, and provide implications for identifying potential “ahead of time” discoveries or transformative research, and shortening time lag for original research to get recognized. Based on the data analysis and case studies, this paper figured out some key characteristics of SB publications. The content of SB papers tends to be multi-discipline research and most of which tend to be published in prestigious multidisciplinary journals with higher impact and wider scope. One is perhaps more inclined to believe that SB relate to more fundamental and basic, and less to application-oriented work. But a surprising finding is that half of the SBs are application oriented and significantly more cited in patents than ‘normal’ papers, which demonstrated the potential technical and application-research properties of SB. The key publications and pioneering works of the recent Nobel Prize winners for physiology and medicine are delayed-cited rather early-cited in the entire citation life-time of an article. We further suggested several clues for early identifying SB. First, Transformative research tend to be neglected or resisted by the scientific community initially and this neglect or resistance could be regarded as the key clue for the early prediction of SB literature. Publications belonging to so-called transformative research, even when less frequently cited than others, should be given special attention as early as possible, because they may suddenly attract many citations after a period of sleep. One could identify transformative research through some text terms (such as "disagree", "overcome", "break", "dispute"...). In order to discern such potential transformative research, we could observe whether the relevant documents get early citation from patents or not, because many SB documents tend to be technical research in nature and application-oriented. Second, the Bcp index proposed in our foregoing paper is more sensitive in identifying the “lower level SBs”, which refers to the case when the total citations and the maximum annual citations of SBs are not so high in comparison with other typical SBs. This index may be used to identify the papers at the sleeping-awakening interface, which provided new tools for arousing attention of the science community to previously overlooked but important research. We also pondered some policy implications about the associations of SB publications with transformative research, research front and research evaluation.
Peer Review Status:
Awaiting Review
Subjects: Management Science >> Science ology and Management Subjects: Library Science，Information Science >> Information Science submitted time 2017-07-28
Abstract：本文采用科学计量学方法，以科技论文和资助项目为主要资料，对2011年以来国际上发表的科技政策研究论文、以及美国SciSIP计划、日本SciREX计划和中国国家自然科学基金委员会管理科学部“科技管理与政策”相关的规划布局和资助项目进行定量和定性综合分析，揭示国际和我国科技政策学的研究态势。美国科技政策“学”强调“科学基础”，主要侧重于服务政府部门的科技政策制定和政策过程的科学化；日本则倾向“学科建设”，包括国家重要政策议题的专题研究（任务导向研究），针对科技政策学术共同体的课题资助（自由申请研究），机构设置与人才培养，以及数据基础设施建设。发展我国的科技政策学，建议同时借鉴日本学科建设的思路以及美国协调各政府部门政策过程的思路；建议加强社会科学与自然科学的跨学科融合研究，考虑设置“科技政策研究”专项资助渠道与多元资助机制；建议将数据基础设施建设作为一项基础性、战略性任务；建议建立政策研究界和决策者之间的建制性交流研讨机制等。
Peer Review Status:Awaiting Review
Subjects: Library Science，Information Science >> Information Science submitted time 2016-08-16
Abstract：[目的/意义] 通过优化提出一个可精准识别睡美人文献的简易无参数指标。[方法/过程] 借鉴睡美人指数（B指数）基本框架，通过将考察对象“年度被引次数”优化为“年度被引次数累积百分比”，提出Bcp指数，重新定义唤醒时间、睡眠深度和唤醒强度。并通过识别Science和Nature上的睡美人文献进行检验。[结果/结论] Bcp指数继承了B指数对那些非常显著的睡美人文献高度敏感的优点。Bcp指数框架下计算出的唤醒时间更符合实际情况，而B指数框架下的唤醒时间易被延迟估计。Bcp指数考虑了观察期内论文全部的引文曲线，规避了B指数无法反映年度被引次数达到最大值以后的引文曲线的缺点。Bcp指数对论文发表之初被引次数的约束效力显著高于B指数，更符合睡美人文献早期零被引和低被引的特征。Bcp指数对年龄大、总被引次数和年度被引次数相对较低的睡美人文献更敏感，有利于挖掘平常易被忽视的非高被引文献中睡美人文献的存在规律。Bcp指数规避了人为参数主观界定的不足，以及不同学科领域论文被引规模差异对睡美人文献统一定义的干扰。
Peer Review Status:Awaiting Review
Hits
Hits
Downloads
Comment