Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： With the increasing impact of global environmental change and human activities on biodiversity, human beings will face significant needs in the areas of biodiversity awareness, conservation and sustainable use, and national biosafety. The Biological Collections of the Chinese Academy of Sciences (CAS) include the Biological Collections/Museums belonging to 18 scientific research institutes of CAS. It is the main place for preservation, research, and scientific education of animal, plant, fungus, and fossil specimens in China. Among them, there are two institutes who are leading the National Animal Collection and the National Herbarium, respectively, which are listed into the National Science and Technology Infrastructure of China. The collection reserve, management, and utilization of specimens in the Biological Collections of CAS represent the overall level of strategic biological resources in China. It plays an irreplaceable role in the protection and sustainable utilization of national biological resources and plays an important supporting and ensuring role in national biological safety. Based on a comprehensive analysis of its overall status, the basic orientation, composition and layout characteristics of the Biological Collections of CAS, the scale, composition and characteristics of the specimen collection, and comparison with those of the developed countries were expounded in the present paper. The authors also systematically summarized achievements of CAS relied on Biological Collections in the fields of strategic biological resources collection and preservation, classical taxonomic research, Fauna and Flora compilation, specimen information digitization, science popularization, and so on, and expounded their supporting role in frontier scientific research, major national needs, and national economy. In addition, the key problems about collecting, preserving, researching, and sustainable utilizing biological specimen resources, information and data sharing, as well as the “bottleneck” problems restricting the operation and development of Biological Collections were analyzed, and a specific ideas for the construction of the National Biological Collection, the outlook of the plan for collecting biological specimens resources and operation mode of Biological Collections in the future were proposed.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Biological specimens are important materials in the field of biological research and non-renewable strategic biological resources. The specimen collection of the Chinese Academy of Sciences (CAS) is the center of conservation, research, and scientific education. It plays an irreplaceable role in the research and protection of biodiversity in China. Biological specimens can provide important information in three dimensions: species, space, and time. The use of different levels of such information supports the research areas of species cognition, biodiversity cataloging, protection and management of endangered species, prevention and control of alien invasion, biodiversity monitoring, and species distribution pattern and biodiversity change. Biological specimens have great potential for biodiversity research and conservation. In the future, the construction and management of specimen resources need to be committed to more comprehensive collection, strengthen the acquisition of in-depth information and the construction of data integration platform, so as to better contribute to the construction of ecological civilization and biodiversity conservation in China.
Subjects: Computer Science >> Computer System Architecture submitted time 2017-03-09
Abstract：未来网络的体系结构需要根据网络业务自适应进化调整，因此灵活与高性能的路由器是构建未来网络的基础。虚拟软件路由器支持网络虚拟化和可编程的特性，能够在一个物理网络上承载多个不同网络体系结构的逻辑网络，实现业务创新，具有良好的灵活性。但是虚拟化所带来开销会给虚拟路由器的数据包转发性能带来很大影响。如何在保证灵活性的前提下提高转发性能成为迫切需要解决的问题。本文对不同的虚拟技术和可扩展路由软件进行介绍，并搭建实验平台，测试了KVM（全虚拟化）、Xen（半虚拟化）、OpenVZ（操作系统级别虚拟化）等的转发性能，评估了不同I/O 加速技术对转发性能的提升。该实验数据对定位虚拟化软件路由器的转发性能瓶颈，提高转发性能具有重要的指导意义。
Peer Review Status:
Awaiting Review
Subjects: Computer Science >> Computer Software submitted time 2017-03-09
Abstract：网络入侵检测与防御系统在当前的IP 网络安全领域中扮演着重要的角色，互联网流量的激增和单核处理器在数据包处理上存在的瓶颈，使得传统的运行于单核上的单线程网络入侵检测与防御系统已经远远不能满足网络发展的需求。为了解决这个问题，本文以主流单线程网络入侵检测与防御系统软件Snort 为基础，设计了一个基于软件流水的并行入侵检测系统pSnort，将传统的Snort 划分为2 个阶段，通过将其中最耗时的处理阶段并行化，以达到提升性能的目的。同时，通过程序设计，pSnort 避免了由于并行化而带来的严重的同步/互斥问题。经过试验，pSnort在Intel Quad-core Xeon 通用平台上可以获得超过1Gbps 的包处理速度。相对于传统的Snort，pSnort 最高能获得147%的性能提升以及2.5 倍加速比。
Peer Review Status:Awaiting Review
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