Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2020-09-28 Cooperative journals: 《计算机应用研究》
Abstract： Taking account of the problems that the standard probability hypothesis density filter is difficult to estimate the target state correctly and has high computational complexity when there are multiple targets move close to each other in clutter environments, this paper puts forward a fast close-spaced target tracking algorithm based on the probability hypothesis density. The proposed algorithm first uses an adaptive gate technology to divide the measurement set originated from the real targets from the sensor measurement set, and then uses the real target measurement set to update the predicted intensity. Finally, a detection-guided close-spaced target reweight approach selectively redistributes the inaccurate component weights within the posterior intensity at each discrete time. Experimental results illustrate that the proposed algorithm not only has target tracking with high efficiency, but also has good stability.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： S&T and financing integration contributes to improve innovation efficiency and expand profit margin of financial capital. With the shortening transformation period from basic research into practical productive force, this integration extends to the front of the innovation chain. Dominant position in foundation innovation is becoming the focus of major country competition. From the perspective of innovation chain, this study puts forwards a logical framework of S&T and financing integration. For different innovation stages, the study analyzes the technology innovation goals, industrial development characteristics, and the rules of capital operation. Based on the co-evolution processes of S&T and financing, suggestions of S&T and financing integration development in China are provided.
Subjects: Library Science，Information Science >> Library Science submitted time 2016-05-05
Abstract：[目的]对典型科技文献语义检索系统进行调研和总结。[文献范围]利用Web of Knowledge和Google Scholar检索semantic search相关文献以及语义检索系统的参考文献和研究报告。[方法]根据文本语义处理程度，将这些系统归纳为语义查询扩展的检索系统、以概念或实体为中心的检索系统、以关系为中心的检索系统和面向知识发现的检索系统。[结果]提出科技文献语义检索系统的基本框架，总结科技文献语义检索系统功能特点。[局限]缺少对语义检索系统的性能评测。[结论]为构建面向科技文献的语义检索系统提供良好借鉴。
Peer Review Status:
Awaiting Review
Subjects: Library Science，Information Science >> Library Science submitted time 2016-04-19
Abstract：［目的／意义］构建国史知识检索平台，提高用户获取国史知识的效率，促进国史宣传和教育。［方法／过程］提出基于本体的国史知识检索平台构建思路与总体框架，在构建国史本体知识库的基础上，采用Neo4j数据库作为RDF数据仓储，创建基于Solr的实例索引、三元组索引和词条索引，针对多种检索需求设计实现检索引擎的执行流程、检索式构造方法以及查询处理算法，并为国史知识展示设计可视化实现方式。［结果／结论］构建国史知识检索平台，提供实体检索、查询问答、关联检索、时序检索及语义资源浏览等检索与浏览服务。该平台框架及关键技术实现方案可为面向领域知识的深度检索服务提供重要参考。
Peer Review Status:Awaiting Review
Subjects: Psychology >> Social Psychology submitted time 2023-03-27 Cooperative journals: 《心理学报》
Abstract： Although the continuous spread of the pandemic and the rapid development of technology has brought challenges for top managers in China, the environmental uncertainty also offers an opportunity for them to practice and develop leadership skills. To answer what leadership behaviors will help top managers improve organizations’ adaptability and performance in a rapidly changing and complex environment, we developed a new leadership construct, namely, dialectical leadership behavior based on dialectical thinking rooted in the Chinese culture.Dialectical leadership behavior is characterized as a strategic leadership behavior including timely adapting organizational strategy and managerial practices to environmental changes, understanding and balancing between management contradictions, and holistically coordinating different departments and resources in organizations. According to upper echelon theory (Hambrick & Mason, 1984), CEOs’ leadership styles have a profound impact on the strategic choice and performance of the organization. We thus expect CEO dialectical leadership behavior to contribute to firm innovative capability and performance through strategic flexibility in a complex and uncertain business environment.To better understand dialectical leadership, we first developed and validated a scale. We found that dialectical leadership behavior was composed of six dimensions: timely adjusting, individualized mentoring, weighing contradictions, balancing kindness and strictness, promoting coordination, and holistically managing. We further distinguished dialectical leadership behavior from other related leadership constructs with theoretical and empirical efforts. Besides, as top managers of Chinese firms displayed a significantly higher dialectical leadership behavior than those of U.S. companies, the cultural uniqueness of dialectical leadership behavior was justified. Finally, we revealed that CEO dialectical leadership behavior in Chinese companies positively affected firm strategic flexibility and ultimately improved firm innovative capability and performance. We make several contributions. First, scholars constantly explore leadership constructs and practice based on the Western culture. However, the cultural difference between the East and the West matters when it comes to the effectiveness of leadership behaviors. Dialectical leadership behavior provides a new perspective for future exploration of indigenous leadership behaviors and influences by incorporating traditional wisdom of Eastern culture and the reality faced by Chinese enterprises. Second, by developing the measurement of dialectical leadership behavior, we contribute to the future investigation of dialectical leadership behavior and its correlations. Additionally, as we found that CEO dialectical leadership behavior is positively related to firm innovative capability and performance, which are critical for enterprises to survive and thrive during the crisis, we lend confidence in applying wisdom from the Chinese traditional culture to current management practice. Finally, by uncovering the role of firm strategic flexibility in mediating the influence of dialectical leadership behavior on firm innovative capability and performance, we extend understandings about the mechanism through which dialectical leadership behavior matters. We also provide the discussion on the limitation of the study and future research directions.
Subjects: Medicine, Pharmacy >> Clinical Medicine submitted time 2022-08-12 Cooperative journals: 《中国全科医学》
Abstract： background The characteristics of body fat composition and metabolic indexes in non-obese MAFLD patients, as well as the predictive value of each index to the disease, different research conclusions are not consistent. Objective To analyze the body fat composition and the changes of blood lipid, blood glucose and uric acid in non-obese people with metabolic associated fatty liver disease (MAFLD), to clarify the independent risk factors of non-obese MAFLD, and to explore the correlation between the above indexes and non-obese MAFLD and its predictive value. Methods The physical examination personnel who underwent physical examination in the health management center of Nanjing Gulou Hospital from January 2018 to January 2019 were collected and were examined by human body composition analysis. According to the results of liver B-ultrasound, they were divided into fatty liver group and non-fatty liver group. Among the two groups, they were divided into obese group and non-obese group according to BMI < 25kg / m2. 129 cases of non-obese MAFLD, 129 cases of non-obese healthy group, 129 cases of obese MAFLD and 129 cases of obese non MAFLD were finally included. To compare the body fat composition, blood lipid, blood glucose, uric acid and liver function indexes between non-obese MAFLD and the other three groups, analyze the correlation between each index and non-obese MAFLD, and clarify the independent risk factors of non-obese MAFLD and the predictive value of the above indexes for non-obese MAFLD. Results 1. The body mass index (BMI), body fat (BF), percentage of body fat (BFR), visceral fat area (VFA), waist circumference (WC) and waist hip ratio (WHR) of non-obese MAFLD were higher than those of non-obese healthy group, but lower than those of obese MAFLD. Cholesterol (TC), low density lipoprotein cholesterol (LDL), triglyceride (TG), high density lipoprotein cholesterol (HDL), uric acid (UA), alanine aminotransferase (ALT) Glutamyl transpeptidase (GGT) was higher than that in non-obese healthy group, and there was no significant difference with obese MAFLD. There was no significant difference in fasting blood glucose (FPG) and glycosylated hemoglobin (HbA1c) between the non-obese healthy group and the non-obese healthy group. 2. Kendall's correlation analysis showed that TC, LDL, TG, ALT, GGT, UA, BFR, VFA and WHR were positively correlated with MAFLD. HDL was negatively correlated with MAFLD. 3. Multivariate logistic regression analysis showed that TG, ALT, UA, BFR and VFA were independent risk factors for non-obese MAFLD. 4. The results of receiver operating characteristic (ROC) curve analysis showed that TG, ALT, UA, BFR and VFA had good predictive ability for non-obese MAFLD, among which VFA had the greatest predictive value for non-obese MAFLD. The best critical value is 59.75cm for men and 79.15cm for women. Conclusion Compared with non-obese healthy people, non-obese MAFLD has increased body fat and visceral fat, abnormal lipid metabolism, elevated uric acid level and transaminase. TG, ALT, UA, BFR and VFA were independent risk factors for non-obese MAFLD. ROC curve analysis showed that the above indicators had the ability to predict non-obese MAFLD, among which VFA had the greatest predictive value for non-obese MAFLD. HDL is a protective factor for non-obese MAFLD.
Subjects: Library Science，Information Science >> Library Science submitted time 2016-01-25
Abstract：深入开展中华人民共和国国史的教育和研究一直是各方高度重视的工作。将国史知识进行语义揭示和组织，对于国史的教育和研究具有重要意义。在参考相关研究成果的基础上，本文提出了“向下挖掘，向上组织”的国史知识语义揭示与组织方法。这一方法以国史本体为基础，在对隐藏于国史资源文本条目中的国史知识对象和相关事实进行语义挖掘和揭示的基础之上，通过国史知识对象的关联，构建国史知识网络，并基于时间、类属、层级及统计等关系，对国史知识内容进行更高层次的多维组织展示，并基于这一思路开发了相应的系统平台，实现了国史知识的揭示、重组和其他创新应用。本文所提出的国史知识语义揭示和组织方法对其他类型知识的开发利用具有参考价值。
Peer Review Status:Awaiting Review
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Innovation always originates from scientific research (basic research and applied research). Investing in scientific research can create new products and new industries, and bring continuous and huge profit. It appeals to a wide range of social investment from market to fund scientific research in recent years. Such economical return, however, is often thwarted by the high risk and uncertainty of scientific research. The main obstacle to the social investments funding scientific research is analyzed in this paper and then some examples are presented as well. It illustrates that it is crucial for public policy to shorten the gap between the science and market in order to make it easier for all kinds of social capital to support innovation. The main challenge for policy makers is to determine the priority of innovation and to reduce the risks, and it is of great essence to construct a supportive system for social investment funding scientific research.
Subjects: Civil Engineering and Building Construction >> Basic Disciplines of Civil Engineering and Building Construction submitted time 2018-10-26 Cooperative journals: 《土木建筑工程信息技术》
Abstract：目前的BIM应用与各种新兴信息技术相结合，在多领域均有其身影，而铁路四电工程因其多专业交叉、施工难、跨自然区域大等特点，迫切地需要BIM来提高设计、施工的效率。为使BIM在铁路四电工程中更好地应用
Subjects: Civil Engineering and Building Construction >> Basic Disciplines of Civil Engineering and Building Construction submitted time 2018-10-26 Cooperative journals: 《土木建筑工程信息技术》
Abstract：目前的BIM应用与各种新兴信息技术相结合，在多领域均有其身影，而铁路四电工程因其多专业交叉、施工难、跨自然区域大等特点，迫切地需要BIM来提高设计、施工的效率。为使BIM在铁路四电工程中更好地应用
Subjects: Medicine, Pharmacy >> Clinical Medicine submitted time 2023-05-05 Cooperative journals: 《中国全科医学》
Abstract： Background Polycystic ovary syndrome（PCOS）is a common reproductive and metabolic disorder，mainly characterized by hyperandrogenemia. Free testosterone index （FAI） is not only important in the diagnosis of hyperandrogenemia but also closely associated with clinical parameters，such as glucose and lipid metabolism indexes in PCOS patients. Objective To investigate the association between different levels of FAI and the clinical characteristics of PCOS patients. Methods A total of 468 patients with PCOS who were admitted to the gynecology outpatient of the First Affiliated Hospital，Heilongjiang University of Chinese Medicine from October 2019 to June 2021 were included in the retrospective analysis and divided into the low FAI level（LFAI） group（FAI ≤ 2.57，n=156），medium level FAI（MFAL） group（2.57
Subjects: Mechanics >> Applied Mechanics submitted time 2023-03-20 Cooperative journals: 《应用力学学报》
Abstract： The creep mechanical model of pile foundation is established based on the creep displacement ofpile foundation and its equivalent time-dependent soil settlement theory.The bearing mode of pile founda-tion and its correlation with load on the top of pile , the settlement displacement and time-dependent char-acteristics of pile foundation under the coresponding bearing mode are studied.The results show that fric-tion end bearing pile in creep stratum is affected by the rheological characteristics of soil , and total dis-placement of pile foundation presents significant time-dependent characteristics , which is dominated by thecreep characteristics of soil.The applicability of model and theoretical method in creep formation is veri-fied by the engineering examples. The viscoelastic theoretical solution can be used not only to predict long-term displacement of pile foundation in stable creep stratum , but also to calculate the failure of pile foun-dation in other creep stratum.
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2022-05-10 Cooperative journals: 《计算机应用研究》
Abstract： Bullens et al. left an open problems in CSI-Fish is to devise a identification protocol that allows for the challenge set to be #1;rather than the small set #1;. This paper proposed a zero-knowledge proof scheme based on supersingular isogeny. This scheme addresses the open problem by taking the challenge C as a isogeny , and reduces the soundness error and the size of public key. This scheme can be turned into non-interactive zero-knowledge proof scheme using the Fiat-Shamir transform. Then signature scheme and group signature scheme based on supersingular isogeny can be implemented under the quantum random oracles model. And this paper analyzes the security and correctness of these schemes.
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】拓展以物种为中心的植物物种多样性抽取框架, 探索实现语义知识抽取方法。【方法】结合当前生物多样性抽取的主流研究, 以物种为中心, 设计包含多种实体及实体间关系的知识抽取框架, 利用已有的众多专业数据库, 设计并实现相应的识别方法。【结果】设计以物种为核心的知识抽取框架, 探索实现多种实体及实体间关系的语义知识抽取方法, 拓展植物物种多样性领域抽取内容和思路。【局限】实体识别的完整性和准确性受底层知识库影响较大, 且实体间关系的类型局限于共现、上下位类、语法关系几类, 还需进一步研究。【结论】本研究拓展了植物物种多样性抽取内容和思路, 可有效支持语义检索、科学计算。
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】拓展以物种为中心的植物物种多样性抽取框架, 探索实现语义知识抽取方法。【方法】结合当前生物多样性抽取的主流研究, 以物种为中心, 设计包含多种实体及实体间关系的知识抽取框架, 利用已有的众多专业数据库, 设计并实现相应的识别方法。【结果】设计以物种为核心的知识抽取框架, 探索实现多种实体及实体间关系的语义知识抽取方法, 拓展植物物种多样性领域抽取内容和思路。【局限】实体识别的完整性和准确性受底层知识库影响较大, 且实体间关系的类型局限于共现、上下位类、语法关系几类, 还需进一步研究。【结论】本研究拓展了植物物种多样性抽取内容和思路, 可有效支持语义检索、科学计算。
Subjects: Library Science，Information Science >> Indexing and Cataloging Subjects: Computer Science >> Natural Language Understanding and Machine Translation submitted time 2016-04-28
Abstract：[目的]拓展以物种为中心的生物多样性知识抽取框架，探索实现语义知识抽取方法。[方法]结合当前生物多样性抽取的主流研究，以物种为中心，设计包含多种实体及实体间关系的知识抽取框架，利用已有的众多专业数据库，设计并实现相应的识别方法。[结果]设计了以物种为核心的知识抽取框架，探索实现了多种实体及实体间关系的语义知识抽取方法，拓展了生物多样性领域抽取内容和思路。[局限]本研究实体识别的完整性和准确性受底层知识库影响较大，且实体间关系的类型局限于共现、上下位类、语法关系几类，还需进一步研究。[结论] 拓展了生物多样性领域抽取内容和思路，可有效支持后续的语义检索、科学计算。
Peer Review Status:Awaiting Review
Subjects: Mechanics >> Applied Mechanics submitted time 2023-03-20 Cooperative journals: 《应用力学学报》
Abstract： Based on mechanical characteristics of pile foundation in layered anisotropic soft soil layer , byconstructing the virtual cylindrical equivalent model and using the layered summation method , the theoreti-cal solutions of pile axial deformation and pile bottom settlement displacement are deduced , and calculationmethod of pile foundation settlement displacement suitable for arbitrary layered anisotropic stratum andload conditions is established.The settlement and displacement characteristics of pile foundation in layeredanisotropic stratum,the phenomenon of interface mutation and its evolution law with engineering and geo-logical factors are studied. The results show that there is a zero axial force horizontal plane in the pile sec-tion or the soil at the bottom of the pile with the depth varying with the load and engineering geological parameters. When the depth of the zero axial force plane is less than the length of the pile foundation , thepile foundation is in the friction bearing mode , and the settlement displacement of the pile foundation isequal to the deformation of the pile at the upper part of the section;On the contrary , the pile foundation isin the common bearing mode of friction and pile end, and the settlement displacement of pile foundation isequal to the superposition of pile deformation and pile bottom settlement. 'The field test results verify thecorrectness of the theoretical method.The established layered model and theoretical method can easily sim-ulate the soft soil stratum with approximate horizontal distribution and its engineering geological parame-ters , and can be directly applied to the bearing design and calculation of pile foundation in any layered an-isotropic stratum.
Subjects: Astronomy >> Astrophysical processes submitted time 2023-06-07 Cooperative journals: 《天文学进展》
Abstract： Symplectic algorithms are the best integration tool to study the long-term evolution of Hamiltonian systems. Because of this good property, they have been popular. One can construct high-precision symplectic algorithms by analyzing the truncation error of Hamiltonian function. Symplectic algorithms consist of explicit symplectic algorithms and implicit symplectic algorithms. When a Hamiltonian system is integrable or separable, explicit symplectic algorithms can be constructed. Explicit algorithms includes nonforce gradient explicit symplectic algorithms, force gradient symplectic algorithms, symplectic correction methods and pseudo high order symplectic algorithms. When the variables of a Hamiltonian system cannot be separated, implicit symplectic algorithms, or the explicit symmetry methods in extended phase space are suitable for solving this problem. We introduce the construction forms and applications of these algorithms, analyze the advantages and disadvantages of the related symplectic algorithms. It is suggested that symplectic algorithms should be selected according to practical problems.
Subjects: Library Science，Information Science >> Library Science submitted time 2016-01-25
Abstract： 【目的】设计并实现 STKOS术语发布与共享服务系统。【应用背景】作为一个超级词表, 科技知识组织体系(STKOS)需要提供给用户使用从而推进知识服务, 促进知识共享, 为此需通过一个共享服务平台对其进行发布。【方法】在对国际上相关项目和系统进行调研的基础上, 结合 STKOS的特点和应用需求, 设计系统的功能框架, 并对系统实现中的关键问题包括应用场景、数据交换格式、数据结构、可视化、多版本管理等进行分析, 完成系统的整体建设。【结果】在千万量级数据场景下, 实现 STKOS术语发布与共享服务系统平台。【结论】本系统支持 STKOS数据的管理、发布, 支持对知识体系内容的揭示, 为用户提供对知识组织体系的浏览、检索和个性化定制下载。
Peer Review Status:Awaiting Review
Subjects: Psychology >> Developmental Psychology submitted time 2023-03-28 Cooperative journals: 《心理科学进展》
Abstract： Nowadays, consumers expect that brands could not only satisfy their functional needs, but also bring emotional and spiritual experiences. Thus, how to garner brand well-being, which means consumers access well-being from using and consuming a brand, has been a challenge for both theory and practice. In fact, whether a brand can create well-being could be shaped by positive interactions between a brand and its consumers. Thus, we postulate that service ritual, which is a prevalence brand-consumer interaction in practice, could create and enhance a brand’s ability to deliver well-being for consumers. Drawing from the interaction ritual chain theory, service rituals refer to a fixed sequence of behaviors that involve symbolic icons and meaningfulness, whereas brands include a series of identifying, integrating, and signaling symbols, indicating the optimal service ritual could form a well-being chain which connects a brand and its consumers. Based on this rationale, the current research draws on interaction ritual chain theory, proposes the new concept of brand well-being, defines and confirms core elements of service rituals, investigates the relationship between service ritual and brand well-being, and further examines the moderating roles of value co-creation orientation of a company and self-brand congruency. In general, the current research offers novel insights on brands and branding theories, well-being and positive psychology literature, and service management theories, while providing implications for companies how to build and manage their brands.
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