Subjects: Digital Publishing >> New Media submitted time 2023-10-08 Cooperative journals: 《中国传媒科技》
Abstract：随着科学技术的不断发展,信息技术在各个领域当中得到了愈加广泛的应用,给人们的生产和生活带来了极大的便利。以往人们主要是通过广播电视来获得各种舆论信息,传统的广播电视占据了较大的市场地位。然而,时代不断发展,科技不断创新,网络技术的出现,给传统的广播电视行业带来了严重的冲击,为了能够与时俱进,保证在市场当中的地位,将网络技术与融媒体广电工程技术进行充分融合势在必行。本文主要针对网络技术在融媒体广电工程技术当中的有效应用策略进行探究,希望能够为推动融媒体广电工程行业进一步发展。
Subjects: Geosciences >> Geography submitted time 2022-10-21 Cooperative journals: 《干旱区地理》
Abstract：核心-边缘结构的研究将加深对城市网络演化规律的理解。基于证券服务联系视角，解析 了20052019年中国城市网络的核心-边缘结构演化特征及其影响因素。结果表明：（1）中国城 市网络核心区块的规模稳步扩张，同时城市核心度的分布趋于分散，推动着城市网络向多中心格 局发展；城市网络的核心区块主要由城市群的核心城市组成，城市网络连通度的分布收敛于Zipf法 则，预示着中国城市网络将呈现持续的等级结构特征。（2）政治权力、市场潜力、知识资本、航空联 系和经济开放决定了证券企业获取有价值信息流的能力，进而构成了中国城市网络核心-边缘结 构生长发育的基础；城市的网络地位在很大程度上源于场所空间中的影响力，这意味着城市网 络的发展可能会加剧中国城市经济的发展差距。
Subjects: Other Disciplines >> Synthetic discipline submitted time 2018-01-20 Cooperative journals: 《中国科学院院刊》
Abstract：党的十九大报告提出了要加强国家创新体系建设，强化战略科技力量，到21世纪中叶实现建成世界科技强国和中华民族伟大复兴的宏伟目标。文章分析了国际一流科研机构在建设世界科技强国中的重要作用，提出国际化是国际一流科研机构履行国家使命的重要支撑，高水平国际化人才队伍则是科研机构国际化发展的核心要素。回顾了中科院实施国际化推进战略五年来所取得的成绩，分析了目前的差距与挑战，并提出以高水平国际化推进中科院建设国际一流科研机构的发展思路与具体举措。
Subjects: Civil Engineering and Building Construction >> Civil Construction Engineering submitted time 2017-12-05 Cooperative journals: 《土木建筑工程信息技术》
Abstract：BIM作为信息化应用的第二次技术革命，是建筑业信息化和高效应用管理的必然趋势〔‘」，城市轨道交通涉及专业繁多，专业间协调沟通困难;本文基于城市轨道交通发展领域，利用BIM技术的空间可视化管理，从项目准备、分专业分阶段建模、模型整合、施工应用以及后期信息反馈收集等五个阶段出发，由三维指导、施工模拟、进度保证、成本管控、安全质量辅助管理等基本应用，再到绿色节能分析、辅助管线迁改技术以及应急疏散模拟等深化应用，充分将BIM技术应用于地铁施工中的整个周期，实现地铁项目施工信息化管理，打造智慧文明工地。
Subjects: Civil Engineering and Building Construction >> Civil Construction Structures submitted time 2017-11-30 Cooperative journals: 《土木建筑工程信息技术》
Abstract：BIM作为信息化应用的第二次技术革命，是建筑业信息化和高效应用管理的必然趋势〔‘」，城市轨道交通涉及专业繁多，专业间协调沟通困难;本文基于城市轨道交通发展领域，利用BIM技术的空间可视化管理，从项目准备、分专业分阶段建模、模型整合、施工应用以及后期信息反馈收集等五个阶段出发，由三维指导、施工模拟、进度保证、成本管控、安全质量辅助管理等基本应用，再到绿色节能分析、辅助管线迁改技术以及应急疏散模拟等深化应用，充分将BIM技术应用于地铁施工中的整个周期，实现地铁项目施工信息化管理，打造智慧文明工地。
Subjects: Other Disciplines >> Synthetic discipline submitted time 2017-05-12 Cooperative journals: 《中国科学院院刊》
Abstract：
Subjects: Other Disciplines >> Synthetic discipline submitted time 2017-08-21 Cooperative journals: 《中国科学院院刊》
Abstract：因病原微生物侵染导致的植物病害对农作物的产量和质量造成了巨大损失，也对我国的粮食安全构成重大威胁。化学农药能够较有效地控制农作物病害，但其大量施用也给环境带来了巨大污染。植物和病原微生物在漫长的相互作用过程中形成了互相识别、共同进化的机制。深刻理解农作物与病原微生物间的识别与互作分子机制，可以加快农作物抗性品种分子育种，从而减少化学农药的施用。近十多年来，植物免疫识别和病原微生物致病性的分子机理研究取得了显著进展，并逐渐形成了植物与病原微生物分子互作的进化模型，这些成果为农作物的抗病性研究和病原微生物的致病功能解析奠定了基础，也为利用现代生物技术改良植物抗病性提供了新的策略和思路。文章综述了植物先天免疫研究的重要进展，并探讨了未来的重要研究方向。
Subjects: Library Science，Information Science >> Library Science submitted time 2023-10-08 Cooperative journals: 《知识管理论坛》
Abstract： [Purpose/Significance] Analyzing and summarizing current situation in the field of curriculum ideological and political education research can provide reference for grasping the research focus in this field. [Method/Process] The research adopted a combination of qualitative and quantitative research methods, took the data of 946 literature in the field of curriculum ideological and political education published by undergraduate colleges in core journals from 2017 to 2021 as samples, standardized the key words of the literature, and combined the reading and judgment of the content of the literature, the literature in the field of curriculum ideological and political education were divided into three major research types of cognitive theory, methodological theory and practical theory and eight research themes of theoretical interpretation, ideological and political elements, teaching system, professional ideological and political education, classroom teaching, teacher team, evaluation system and planning and implementation. Using bibliometrics and VOSviewer software to further analyze the research trends in the field of curriculum ideological and political education, as well as the characteristics of various research types and research topics. [Result/ Conclusion] The research results show that the curriculum ideological and political education research has three characteristics: combining professional characteristics, taking great thought and politics education as the core and emphasizing collaborative education. On this basis, it puts forward three suggestions for curriculum ideological and political education research and practice: grasp the characteristic trend, base on the great thought and politics education and give full play to the collaborative advantages.
Subjects: Geosciences >> Geography submitted time 2023-09-27 Cooperative journals: 《干旱区地理》
Abstract：利用多行业金融机构的地理分布数据，运用社会网络分析方法对中国金融网络进行测度，借助地理探测器模型探讨中国金融网络空间结构形成的影响因素。结果表明：（1） 金融网络呈现核心-边缘结构特征，但是金融网络的空间分异程度在缩小。另外，金融网络空间结构具有空间指向性。（2） 影响全国、东部、中西部、核心和边缘地位金融网络发育的因子不同，这与不同区域经济发展水平、市场潜力、关键资源、区位条件和经营成本等不同紧密相关。（3） 择优选择、路径依赖和网络邻近机制是金融网络空间结构形成所遵循的内在机理，在未来经济金融日趋融合的大背景下，各级政府需进一步在更大尺度上加强城市之间在金融方面的合作。通过研究中国金融网络空间结构特征及其影响因素，既可以为优化金融资源配置提供政策建议，也可以为推动城市间协调发展的政策制定提供科学依据。
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-04-12 Cooperative journals: 《计算机应用研究》
Abstract： The existing AdaBoost. M2 algorithm are insufficient in protocol traffic multiclass imbalance to solve the problem. So, this thesis proposes an ensemble algorithom called RBWS-ADAM2 for the classification of multiclass internet traffic. During each iteration of AdaBoost. M2, this algorithm preprocessed the training dataset by randomly balanced resampling, this strategy changed the number of majorities and minorities by randomly setting the sampling balance point to build multiple different training datasets. Moreover, this strategy toke sample weight as the basis for sample screening to strengthen the learning of this kind of sample. The experimental comparison of RBWS-ADAM2 algorithm and other similar algorithms on the internationally published protocol traffic datasets shows that, compared to other algorithms, the proposed RBWS-ADAM2 algorithm not only improves the F-Measure of most minorities, but increases the overall G-mean and the overall average F-measure effectively, and obviously enhances the overall performance of the ensemble classifier.
Subjects: Library Science，Information Science >> Information Science submitted time 2017-11-05 Cooperative journals: 《智库理论与实践》
Abstract： [Purpose/significance] In the Internet age, university think tanks should actively take full advantage of Internet technology to promote and expand their attention and influence. Baidu search index is used to evaluate the attention, activity and influence of university think tanks. [Method/process] This paper analyzed the institutional name, geographical distribution, the background of the university think tanks. At the same time, the accuracy of Baidu search index was decided by the network stability, the accuracy of Baidu search technology and the development of the history, stability and other factors of university think tanks. [Result/conclusion] The university think tanks should further make full use of the Internet, improve the activity and the Internet influence, and take full use of the superior resources in their universities. Local universities should make use of their owe advantages, and follow the development path with their characteristics.
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2022-06-06 Cooperative journals: 《计算机应用研究》
Abstract： The increasingly frequent illegal transactions hinder the secure transactions of Ethereum, and the anonymity of electronic currency makes it difficult to track and analyze illegal transactions. This paper used the transaction data of the Ethereum platform as the data source, the marked illegal account and unmarked normal account data set as the training set, and the characteristic attributes of the transaction data as the construction basis. Account for the overall forecast. The process uses the T-SNE algorithm to realize the dimensionality reduction and visualization of transaction features, adopts multiple cross-validation, and introduces the SHAP Value factor to judge the positive and negative attributes of the feature. The prediction effect accuracy rate of the established model reaches 94.29%. The evaluation metric for the area (AUC) value reached 0.9846. The proposed scheme can more accurately predict the illegal behavior on the Ethereum trading platform, and will effectively improve the blockchain-based trading environment.
Subjects: Environmental Sciences, Resource Sciences >> Basic Disciplines of Environmental Science and Technology submitted time 2019-06-13 Cooperative journals: 《干旱区地理》
Abstract：飞蝗Locusta migratoria (Linnaeus)系斑翅蝗科Oedipodidae飞蝗属Locusta Linnaeus洲际性农业重大害虫，在我国主要包括东亚飞蝗L.migratoria manilensis (Meyen)、亚洲飞蝗[WTBX]L.migratoria[WTBZ] (Linnaeus)和西藏飞蝗L.migratoria tibetensis Chen。掌控飞蝗灾害的地理空间分布并预测起潜在的适宜分布区，对于我国飞蝗灾害的综合防控具有重要意义。结合三种中国飞蝗灾害记录地理信息和生物环境环境因子参数，应用最大熵模型(MaxEnt) 和地理信息技术(GIS) ，在3 km×3 km尺度上对三种飞蝗灾害在中国的地理分布空间格局梯度、灾害风险概率和风险等级进行了模拟预测与分析，并对影响分布的关键生物气候环境因子进行了分析。结果显示，蝗灾害风险区的地理分布模拟结果与历史记录完全符合，ROC检验表明MaxEnt 模型预测可靠性极高。三种飞蝗东亚飞蝗、亚洲飞蝗和西藏飞蝗在中国的灾害风险区总面积依次分别为315.87×104 km2、395.80×104 km2和125.00×104 km2，分别占国土面积的33.43%、41.96% 和13.25%。东亚飞蝗和亚洲飞蝗的灾害风险区存在75.8×104 km2的空间重叠，主要分布于我国农牧交错区及以南区域。三种飞蝗灾害风险区的地理梯度与分布格局与中国三大自然地理区高度吻合，其地理分布格局表现出显著的经度和纬度空间梯度异质性。刀切法检测（Jackknife test）表明，三种飞蝗灾害的主导生物—气候影响因子的不同导致了其地理分布格局的显著差异，表明蝗灾爆发概率同时受到各自不同飞蝗物种对气候环境的适应性与地理空间隔离作用的共同制约。研究结果可为我国飞蝗灾害的跨界联合全程防控、区域联网监测联控和综合治理提供参考依据。
Subjects: Library Science，Information Science >> Information Science submitted time 2017-11-08 Cooperative journals: 《数据分析与知识发现》
Abstract：【目的】针对如何准确识别潜在研发伙伴, 提出一种基于专利的企业潜在研发伙伴的推荐方法。【方法】以TRIZ 理论为基础, 对相关专利的功能、科学效应、功效等语义特征进行抽取, 构建出领域专利技术树, 将企业技术需求中的关键信息进行抽取并匹配到技术树中, 根据专利权人得出潜在研发伙伴并使用层次分析法对其进行评估。【结果】研究获取热水器防水垢技术领域的德温特专利数据, 对潜在研发伙伴进行识别与评估, 证明该方法的可行性。【局限】对于语义特征的抽取, 由于中文语法结构存在较大的灵活性, 抽取的准确率有待提高。【结论】该方法可以发现并评估潜在研发伙伴, 为企业推荐可以解决其技术需求的研发伙伴。
Subjects: Library Science，Information Science >> Information Science submitted time 2017-11-08 Cooperative journals: 《数据分析与知识发现》
Abstract：【目的】针对如何准确识别潜在研发伙伴, 提出一种基于专利的企业潜在研发伙伴的推荐方法。【方法】以TRIZ 理论为基础, 对相关专利的功能、科学效应、功效等语义特征进行抽取, 构建出领域专利技术树, 将企业技术需求中的关键信息进行抽取并匹配到技术树中, 根据专利权人得出潜在研发伙伴并使用层次分析法对其进行评估。【结果】研究获取热水器防水垢技术领域的德温特专利数据, 对潜在研发伙伴进行识别与评估, 证明该方法的可行性。【局限】对于语义特征的抽取, 由于中文语法结构存在较大的灵活性, 抽取的准确率有待提高。【结论】该方法可以发现并评估潜在研发伙伴, 为企业推荐可以解决其技术需求的研发伙伴。
Subjects: Library Science，Information Science >> Information Science submitted time 2017-11-08 Cooperative journals: 《数据分析与知识发现》
Abstract：【目的】利用专利数据对靶向技术创新网络进行量化分析, 从多个视角对技术创新网络的演化过程进行测度分析。【方法】以靶向技术创新网络为研究对象, 从德温特专利数据库中检索靶向技术专利数据, 利用动态网络分析方法与专利数据相结合, 将动态网络分析指标应用到技术创新网络分析中, 构建基于专利动态网络的技术创新演化测度体系。【结果】分析技术创新网络的4 个测度对象, 根据网络指标的变化从微观层次展现靶向技术的发展演化趋势和技术热点。【局限】技术创新网络评价测度指标不够丰富, 对指标的研究不够深入。【结论】该方法能够有效全面地测度技术创新网络演化趋势和技术热点。
Subjects: Nursing >> Nursing submitted time 2023-09-27
Abstract： This article summarizes the treatment and nursing experience of a case of elderly patients with adhesion intestinal obstruction combined with traditional Chinese and Western medicine. According to the syndrome differentiation, oral traditional Chinese medicine decoction, moxibustion, acupoint application, external application, ear acupoint pressure, traditional Chinese medicine retention enema and other traditional Chinese medicine special treatment and nursing intervention are implemented. At the same time, combined with gastrointestinal decompression, anti-infection, rehydration, infrared and other treatment and conventional nursing intervention, the advantages of traditional Chinese and Western medicine complement each other, effectively improving gastrointestinal function. Remove the obstruction. In addition, targeted dietary education and health guidance should help promote the rehabilitation of patients and avoid the recurrence of diseases.
Peer Review Status:
Awaiting Review
Subjects: Library Science，Information Science >> Information Science submitted time 2017-11-08 Cooperative journals: 《数据分析与知识发现》
Abstract：【目的】针对德温特专利数据设计并实现语义完整、性能良好的专利语义知识库。【应用背景】专利语义知识库用于存储专利数据以及各项数据之间存在的语义关系, 使得人们可以通过语义关系对专利进行检索。【方法】通过分析德温特专利数据所含及其之间的语义关系, 改进基于本体的专利语义表示方法, 提出基于属性图模型的德温特专利图数据模型, 并使用Neo4j 图形数据库存储实例化的专利数据。【结果】以云计算技术为例, 构建专利语义知识库, 该知识库保证了语义信息完整, 在较大数据量的情况下, 查询速度可达到传统关系型数据库的5.35 倍。【结论】基于图形数据库的专利语义知识库有着信息完整、语义清晰、性能良好等特点, 是一种稳定且高效的专利数据组织与存储方式。
Subjects: Library Science，Information Science >> Information Science submitted time 2017-11-08 Cooperative journals: 《数据分析与知识发现》
Abstract：【目的】为探索一种准确而及时地识别技术机会的方法, 提出一种基于异常检测技术识别技术机会的框架。【方法】通过构建相似度矩阵进行多维尺度分析, 基于多种异常点检测算法识别出潜在技术机会专利, 结合TRIZ的技术系统进化法则从潜在技术机会专利中挖掘出技术机会。【结果】获取激光光刻技术2000年–2015 年的德温特专利数据, 对该领域不同阶段的技术机会进行识别, 分析结果显示, 通过此框架识别出的前两个阶段的技术机会就是下一阶段的主流技术, 同时, 改进后的极紫外光刻技术可能成为下一代激光光刻领域的主流技术之一。【局限】利用TRIZ 判定技术机会存在一定的主观性, 识别准确度有待进一步提高。【结论】基于异常检测的技术机会识别方法可以有效地识别出技术机会, 有助于提高识别技术机会的及时性。
Subjects: Psychology >> Psychological Measurement submitted time 2022-05-12
Abstract：
Cognitive Diagnostic Computerized Adaptive Testing (CD-CAT) combines the advantages of cognitive diagnosis and CAT, which could improve the efficiency and accuracy of CD-CAT. CD-CAT can be divided into two types: dichotomous and polytomous. Presently, the majority of researches on CD-CAT are based on dichotomous CD-CAT. However, among the practical tests in psychology and education, there are many polytomous items, which can be further divided into nominal polytomous and ordinal polytomous items according to whether there is an order or grade between every response category. Nominal polytomous items are items whose response categories are independent and without orders or grades between every response category. Although researchers have developed (ordinal) polytomous CDMs and corresponding CD-CAT, few nominal CDMs and CD-CAT are based on nominal responses.
This study introduces seven commonly used item selection methods in dichotomous CD-CAT into NCD-CAT (CD-CAT based on nominal response models). PMR (pattern match ratio) and test efficiency index are evaluated under different conditions between these item selection methods. Here are details of two simulation studies below. Study 1 compared the performance of NR_PWKL, NR_PWCDI, NR_PWACDI, NR_MPWKL, NR_SHE, NR_MI, and NR_GDI methods under different test lengths (5, 10, 15, 20) and item pool qualities (high and low) in NCD-CAT. Results showed that: (1) the PMRs of NR_PWCDI, NR_PWACDI, NR_MPWKL, NR_SHE, and NR_MI are higher than or equal to that of NR_PWKL, especially in short tests. (2) as test length gets longer, that PMR advantage is missing, which is the same as the results of Zheng and Chang (2016). (3) compared to test length, item quality has a greater impact on PMR. For instance, with item quality descending, the PMR declined about 30% among all conditions. Study 2 is an experiment on variable-length NCD-CAT that was conducted to compare the performance of each item selection method under the conditions of three maximum posterior probabilities (0.8, 0.85, 0.9) and two item qualities (high and low). The results showed that: (1)under all experimental conditions the average test lengths of NR_PWCDI, NR_PWACDI, NR_MPWKL, NR_SHE, and NR_MI are shorter than that of NR_PWKL; the difference is more than 0.738. (2)affected by item quality, the average length of NR_GDI is smaller than that of NR_PWKL under high-quality conditions and larger than it under low-quality conditions.
To sum up, this study compared the performance of 7 commonly used item selection methods of dichotomous CD-CAT in NCD-CAT with different conditions (fixed and variable length). The simulation study showed that under most conditions, the NR_PWCDI, NR_PWACDI, NR_MPWKL, NR_SHE, and NR_MI methods performed well when compared to baseline algorithm NR_PWKL. This study has expanded the alternatives of item selection methods in NCD-CAT.
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Peer Review Status:Awaiting Review
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