检索结果-南通市图书馆

Disseminating Authorized Content via Data Analysis in Opportunistic Social Networks

在线全文

学校读者我要写书评

暂无评论

Big Data Mining and Analytics 2019年第1期2卷 12-24页

作者： Chenguang kong Guangchun Luo ling Tian Xiaojun Cao the Department of Computer Science Georgia State University the School of Computer Science and Engineering University of Electronic Science and Technology of China

Authorized content is a type of content that can be generated only by a certain Content Provider(CP).The content copies delivered to a user may bring rewards to the CP if the content is adopted by the user. The overall reward obtained by the CP depends on the user's degree of interest in the content and the user's role in disseminating the content copies. Thus, to maximize the reward, the content provider is motivated to disseminate the authorized content to the most interested users. In this paper, we study how to effectively disseminate the authorized content in Interest-centric Opportunistic Social Networks(IOSNs) such that the reward is *** first derive Social Connection Pattern(SCP) data to handle the challenging opportunistic connections in IOSNs and statistically analyze the interest distribution of the users contacted or connected. The SCP is used to predict the interests of possible contactors and connectors. Then, we propose our SCP-based Dissemination(SCPD)algorithm to calculate the optimum number of content copies to disseminate when two users meet. Our dataset based simulation shows that our SCPD algorithm is effective and efficient to disseminate the authorized content in IOSNs.

关键词： opportunistic social networks content dissemination interest centric data analytics

On Improved Delay-dependent Robust Stability Criteria for Uncertain Systems with Interval Time-varying Delay

在线全文

学校读者我要写书评

暂无评论

International Journal of Automation and computing 2015年第1期12卷 102-108页

作者： jun-jun Hui He-Xin Zhang Xiang-Yu kong Xin Zhou The Xi'an Research Institute of High Technology The Baoji Research Institute of High Technology

This paper considers the problem of delay-dependent robust stability for uncertain systems with interval time-varying delays. By using the direct Lyapunov method, a new Lyapunov-Krasovskii(L-K) functional is introduced based on decomposition approach, when dealing with the time derivative of L-K functional, a new tight integral inequality is adopted for bounding the cross terms. Then, a new less conservative delay-dependent stability criterion is formulated in terms of linear matrix inequalities(LMIs),which can be easily solved by optimization algorithms. Numerical examples are given to show the effectiveness and the benefits of the proposed method.

关键词： Lyapunov-Krasovskii(L-K) functional delay decomposition approach linear matrix inequality(LMI) interval timevarying delay robust stability

China’s carbon accounting system in the context of carbon neutrality: Current situation, challenges and suggestions

在线全文

学校读者我要写书评

暂无评论

Advances in Climate Change Research 2023年第1期14卷 23-31页

作者： Hong-Shuo YAN Xian-Chun TAN An ZENG ling-Si kong Institutes of Science and Development Chinese Academy of SciencesBeijing 100190China School of Public Policy and Management University of Chinese Academy of SciencesBeijing 100049China Center for Carbon Neutrality Strategy Institutes of Science and DevelopmentChinese Academy of SciencesBeijing 100190China

Global climate governance is currently at the stage of carbon *** the quality of emissions inventories at different levels has become a critical climate governance task,which not only contributes to the Global Stocktake but also helps verify compliance progress and address new trade *** study provides a comprehensive review of international carbon accounting standards and guidelines while assessing the potential impact of upcoming carbon tax policies,such as the EU CBAM and the *** this basis,the current situation and challenges of China's carbon emission accounting system are systematically analysed,and suggestions for improvement are *** results show that carbon tax policies will increase the requirements for emission inventories and will strengthen the correlation between different *** improvement of China's carbon accounting system should be *** the regional carbon accounting guidelines are already in line with international guidelines,further improvements are needed at the enterprise and product *** boundaries need to be set in China's corporate carbon accounting guidelines,and the speed of developing product carbon accounting guidelines should be *** quality of emissions inventories should be comprehensively improved by implementing a combination of policies,including corporate carbon information disclosure,green supply chain construction,activity data statistics and verification,and a dynamic emission factor database.

关键词： Carbon neutrality Carbon emission Policy suggestion Accounting

Vitamin D binding protein in psychiatric and neurological disorders:Implications for diagnosis and treatment

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Genes & Diseases 2024年第5期11卷 324-334页

作者： ling Li Bing Han Yan kong Gaojia Zhang Zhijun Zhang Research Institution of Neuropsychiatry School of MedicineSoutheast UniversityNanjingJiangsu 210009China Department of Neurology Affiliated Zhongda HospitalNanjingJiangsu 210009China Department of Pharmacology Jiangsu Provincial Key Laboratory of Critical Care MedicineSchool of MedicineSoutheast UniversityNanjingJiangsu 210009China Department of Biochemistry and Molecular Biology School of MedicineSoutheast UniversityNanjingJiangsu 210009China Brain Cognition and Brain Disease Institute Department of Mental Health and Public HealthFaculty of Life and Health SciencesShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China

Vitamin D binding protein(VDBP)serves as a key transporter protein responsible for binding and delivering vitamin D and its metabolites to target *** plays a crucial part in the inflammatory reaction following tissue damage and is engaged in actin *** research has shed light on its potential role in various diseases,leading to a growing interest in understanding the implications of VDBP in psychiatric and neurological *** purpose of this review was to provide a summary of the existing understanding regarding the involvement of VDBP in neurological and psychiatric *** examining the intricate interplay between VDBP and these disorders,this review contributes to a deeper understanding of underlying mechanisms and potential therapeutic *** gained from the study of VDBP could pave the way for novel strategies in the diagnosis,prognosis,and treatment of psychiatric and neurological disorders.

关键词： Neurological disorder Polymorphism Psychiatric disorder Structure Vitamin D binding protein

Arithmetic-analytical Expression of the Koch-type Curves and Their Generalizations (Ⅰ)

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematicae Applicatae Sinica 2015年第4期31卷 1167-1180页

作者： Xiao-ling YANG Guang-jun YANG Statistics and Mathematics College Yunnan University of Finance and Economics Mathematics and Statistics College Yunnan University

In this paper, by constructing the one-to-one correspondence between its IFS and the quaternary fractional expansion, the n-th iteration analytical expression and the limit representation of the family of the Koch-type curves with arbitrary angles are obtained. The distinction between our method and that of H. Sagan is that we provide the generation process analytically and represent it as a graph of a series function which looks like the Weierstrass function. With these arithmetic expressions, we further analyze and prove some of the fractal properties of the Koch-type curves such as the self-similarity, the HSlder exponent and with the property of continuous everywhere but differentiable nowhere. Then, we will show that the Koch- type curves can be approximated by different constructed generators. Based on the analytic transformation of the Koch-type curves, we also constructed more continuous but nowhere-differentiable curves represented by arithmetic expressions. This result implies that the analytical expression of a fractal has theoretical and practical significance.

关键词： the family of Koch-type curves arithmetic-analytical expression binary expansion series analyt-ical transformation stitched curve

Preparation and polymerization mechanism of dihydroxy-capped PCL,poly(CL-b-PEG-b-CL) and poly(DTC-b-CL-b-DTC)

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2005年第4期48卷 334-342页

作者： CHEN Wei ling jun SHEN Zhiquan Institute of Polymer Science Zhejiang UniversityHangzhou 310027China Institute of Polymer ScienceZhejiang UniversityHangzhou 310027China Institute of Polymer ScienceZhejiang UniversityHangzhou 310027China

The ring opening polymerization of ε-caprolactone (CL) was initiated by glycol and yttrium tri(2,6-di-tert-butyl-4-methylphenolate)s (Y(OAr)3),preparing dihydroxy-capped poly (ε-caprolactone) (PCL) with controllable molecular weight.1H NMR and SEC analyses indicate that two kinds of active species and corresponding PCL with different structures exist in the *** the ratio of glycol to Y(OAr)3 benefits the formation of monofunctional active ***,poly(ethylene glycol) (PEG)/Y(OAr)3 system only contains sole bifunctiona active species to synthesize copolymer of CL with PEG (poly(CL-b-PEG-b-CL)).Dihydroxy capped PCL as macroinitiator can further initiate the polymerization of 2,2-dimethyltrimethylene carbonate (DTC).Thus,triblock copolymer of CL with DTC (poly(DTC-b-CL-b-DTC)) has been prepared.

关键词： dihydroxy-capped PCL, DTC, macroinitiator.

Universal Inequalities for Lower Order Eigenvalues of Self-Adjoint Operators and the Poly-Laplacian

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2013年第11期29卷 2209-2218页

作者： He jun SUN ling Zhong ZENG Department of Applied Mathematics Nanjing University of Science and Technology Department of Mathematics Faculty of Science and EngineeringSaga University

In this paper, we first establish an abstract inequality for lower order eigenvalues of a self-adjoint operator on a Hilbert space which generalizes and extends the recent results of Cheng et al. （Calc. Var. Partial Differential Equations, 38, 409-416 （2010））. Then, making use of it, we obtain some universal inequalities for lower order eigenvalues of the biharmonic operator on manifolds admitting some speciM functions. Moreover, we derive a universal inequality for lower order eigenvalues of the poly-Laplacian with any order on the Euclidean space.

关键词： Eigenvalue self-adjoint operator biharmonic operator poly-Laplacian Riemannian man- ifold

Tripling Construction for Large Sets of Resolvable Directed Triple Systems

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2006年第1期22卷 311-318页

作者： jun ling ZHOU Yan Xun CHANG Department of Mathematics Beijing Jiaotong University Beijing 100044 P. R. China

In this paper, we first define a doubly transitive resolvable idempotent quasigroup （DTRIQ）, and show that aDTRIQ of order v exists if and only ifv ≡0（mod3） and v ≠ 2（mod4）. Then we use DTRIQ to present a tripling construction for large sets of resolvable directed triple systems, which improves an earlier version of tripling construction by Kang （J. Combin. Designs, 4 （1996）, 301-321）. As an application, we obtain an LRDTS（4·3^n） for any integer n ≥ 1, which provides an infinite family of even orders.

关键词： Doubly transitive resolvable idempotent quasigroup Resolvable directed triple system,Large set Tripling construction

Large Sets of Pure Directed Triple Systems with Index λ

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2010年第10期26卷 1899-1914页

作者： Bing Li FAN jun ling ZHOU Institute of Mathematics Beijing Jiaotong University Beijing 100044 P. R. China

A directed triple system of order v with index λ, briefly by DTS（v,λ）, is a pair （X, B） where X is a v-set and B is a collection of transitive triples （blocks） on X such that every ordered pair of X belongs to λ blocks of B. A simple DTS（v, λ） is a DTS（v, λ） without repeated blocks. A simple DTS（v, ）,） is called pure and denoted by PDTS（v, λ） if （x, y, z） ∈ B implies （z, y, x）, （z, x, y）, （y, x, z）, （y, z, x）, （x, z, y） B. A large set of disjoint PDTS（v, λ）, denoted by LPDTS（v, λ）, is a collection of 3（v - 2）/λ disjoint pure directed triple systems on X. In this paper, some results about the existence for LPDTS（v, λ） are presented. Especially, we determine the spectrum of LPDTS（v, 2）.

关键词： Large set directed triple system pure