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关键词： 数字信息   标注   论文   object   网络传播   数字资源   知识产权   数字化  

摘要： 数字对象标识符（digital object identifier，DOI）是对包括互联网信息在内的数字信息进行标识的一种工具。为了实现杂志内容资源的有效数字化传播，同时保护这些数字资源在网络链接中的知识产权和网络传播权，为标识对象的版权状态提供基础，实现对数字对象版权状态的持续追踪，本杂志纸版期刊和数字化期刊的论文全部标注DOI。即除科普和消息类稿件外，其他文章均需标DOI，DOI标注于每篇文章首页脚注的第1项。由编辑部为决定刊载的论文标注DOI。

关键词： Vehicular Ad Hoc Networks (VANETs)   ID/locator separation   network-based seamless mobility  

摘要： The integration of VANETs with Internet is required if vehicles are to access IP-based applications. A vehicle must have an IP address, and the IP mobility service should be supported during the movement of the vehicle. VANET standards such as WAVE or C-ITS use IPv6 address auto configuration to allocate an IP address to a vehicle. In CITS, NEMO-BS is used to support IP mobility. The vehicle moves rapidly, so reallocation of IP address as well as binding update occurs frequently. The vehicle' communication, however, may be disrupted for a considerable amount of time, and the packet loss occurs during these events. Also, the finding of the home address of the peer vehicle is not a trivial matter. We propose a network based identifier locator separation scheme for VANETs. The scheme uses a vehicle identity based address generation scheme. It eliminates the frequent address reallocation and simplifies the finding of the peer vehicle IP address. In the scheme, a network entity tracks the vehicles in its coverage and the vehicles share the IP address of the network entity for their locators. The network entity manages the mapping between the vehicle's identifier and its IP address. The scheme excludes the vehicles from the mobility procedure, so a vehicle needs only the standard IPv6 protocol stack, and mobility signaling does not occur on the wireless link. The scheme also supports seamlessness, so packet loss is mitigated. The results of a simulation show that the vehicles experience seamless packet delivery.

关键词： LISP   LISP   Beta Network   LISP-Lab   RIPE Atlas   Experimentation   Measurement  

摘要： The Locator/Identifier Separation Protocol (LISP) has been proposed to tackle the BGP scalability issue encountered in legacy Internet architecture, while introducing additional benefits. The key idea of LISP is to split the conventional IP addressing space into two categories: Identifier and Locator. Identifier is used for identification and Locator is used for routing. It is currently under standardization in IETF and is deployed in the wild at the same time, thanks to two testbeds: the LISP Beta Network and the LISP-Lab project. The interworking mechanism is proposed to ensure the communication between LISP-speaking sites and legacy Internet. The performance of LISP interworking with legacy Internet is of paramount importance to promote the adoption of LISP in future Internet. The existing research efforts to evaluate LISP interworking lack of large scale experimental results. The objective of this paper is to fill this gap by providing a latency evaluation and routing path measurement about LISP interworking mechanism in real networks. The work is based on a 2 weeks measurement campaign by using RIPE Atlas, which is the largest existing Internet measurement infrastructure for both IPv4 and IPv6. Experimental results show that LISP introduces additional latency, especially for close destinations, but negligible for intercontinental long-distance destinations. The additional latency highly depends on the position of the new network element being in charge of the communication between LISP-sites and the legacy Internet. Although LISP introduces some stretch, its performance is generally stable and its latency is not very high compared to natively forwarding without using LISP. (C) 2018 Elsevier B.V. All rights reserved.

关键词： privacy preserving data publishing   k-anonymity   quasi-identifiers   attributes graph   cut-vertex  

摘要： The rapid development of data publishing and information access technology bring a growing number of problems in privacy leakage. In order to avoid linking attacks happened between attributes, K-anonymity model was proposed and become the most widely used in privacy preserving data publishing. Identification of quasi-identifiers (QIs) is one of the primary problems which will directly affect the effectiveness of K-anonymity method. However, most of the existing methods ignored this problem or just choose QIs empirically. These will greatly reduce the validity of K-anonymity method as well as the utility of anonymous data. In this paper, we study the problem of finding QIs for privacy preserving data publishing method based on K-anonymity model. Firstly, we analyze the roles of QIs from the view of independence of sets, and define it as a collection of attributes that can separate sensitive attributes from the other non-sensitive attributes. Then, we propose a construction method for attribute graph based on relationship matrix, which can represent potential connectivity of publishing data, published data and external knowledge. Finally, we put forward an identification algorithm for QIs based on the concept of cut-vertex, which is aiming to find the necessary and minimum QIs. The proposed algorithm is useful to avoid inconvenience and inaccuracy caused by artificial partition of QIs, and can be applied in data publishing situations with multiple sensitive attributes after some extension. Experiments and analysis show that the proposed identification algorithm has better partition ability and lower computational complexity. Therefore, it has good practical value in the application environment of publishing of big data.

关键词： MID clustering-based IR-Seq TCR repertoire sequencing   molecular identifiers   sub-clustering   naive T cells   CMV-specific T cells  

摘要： Unique molecular identifiers (MIDs) have been demonstrated to effectively improve immune repertoire sequencing (IR-seq) accuracy, especially to identify somatic hypermutations in antibody repertoire sequencing. However, evaluating the sensitivity to detect rare T cells and the degree of clonal expansion in IR-seq has been difficult due to the lack of knowledge of T cell receptor (TCR) RNA molecule copy number and a generalized approach to estimate T cell clone size from TCR RNA molecule quantification. This limited the application of TCR repertoire sequencing (TCR-seq) in clinical settings, such as detecting minimal residual disease in lymphoid malignancies after treatment, evaluating effectiveness of vaccination and assessing degree of infection. Here, we describe using an MID Clustering-based IR-Seq (MIDCIRS) method to quantitatively study TCR RNA molecule copy number and clonality in T cells. First, we demonstrated the necessity of performing MID sub-clustering to eliminate erroneous sequences. Further, we showed that MIDCIRS enables a sensitive detection of a single cell in as many as one million naive T cells and an accurate estimation of the degree of T cell clonal expression. The demonstrated accuracy, sensitivity, and wide dynamic range of MIDCIRS TCR-seq provide foundations for future applications in both basic research and clinical settings.

关键词： 数字信息   标注   object   出版物   国际标准   互联网   条形码  

摘要： 数字对象唯一标识符（digital object identifier,DOI）是对包括互联网信息在内的数字信息进行标识的一种工具。在传统的出版物中,书刊、磁带、光盘都有国际标准编号（ISBN、ISSN、ISCN）及其条形码,作为出版物的唯一标识。这些标识使出版物得到有效的管理,便于读者查找和利用。而网上的文档一旦变更了网址便无从追索。

关键词： 数字信息   中华医学会   标注   杂志   object   国际标准   出版物   互联网  

摘要： 数字对象唯一标识符（digital object identifier，DOI）是对包括互联网信息在内的数字信息进行标识的一种工具。在传统的出版物中，书刊、磁带、光盘都有国际标准编号（ISBN、ISSN、ISCN）及其条形码，作为出版物的唯一标识。

关键词： 金融监管政策   金融稳定   标识符   衍生品   监管组织   唯一标识   理事会   交易  

摘要： 国际监管组织1.金融稳定理事会发布有关独特交易标识符的治理安排和实施计划2018年1月，金融稳定理事会（FSB）发布了针对独特交易标识符（Unique Transaction Identifier，UTI）的治理安排：结论和实施计划。UTI是报告场外衍生品交易的关键和全球统一的标识符，旨在促进交易报告的集合汇总。UTI的主要目的是，在向交易存储库（Trade Repositories，TR）的报告中为每个独立的场外衍生品交易设定唯一标识，从而有助于确保场外衍生品交易的集合汇总，以最大限度地减少重复记录相同交易的可能性（如同一笔交易由多个交易对手报告，或向多个TR报告）。

关键词： 数字信息   管理学   发表论文   杂志   健康   中华   object   管理系统  

摘要： 数字对象标识符（digital object identifier，DOI）是对包括互联网信息在内的数字信息进行标识的一种工具，是一个可供全球期刊快速链接的管理系统，整个系统由国际DOI基金会（IDF）进行全球分布式管理。