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| 1 | 中国及其他分布区域野生虎的系统地理学和遗传起源研究进展显示文摘世界野生虎(Pantheratigris)传统上被划分为8个亚种,其中3个亚种已于20世纪灭绝,而剩余种群的生存仍然受到偷猎、栖息地丧失和片断化的威胁。作为唯一栖息着4个现存虎亚种的国家,中国在世界虎的保护事业中负有重要责任,然而其野生和圈养虎的分类地位却仍然不确定。最近一项研究(Luoetal,2004)从所有现存野生虎分布地区(包括中国)采集了134份“基准样品”(即原产野外或有确定地域起源的个体生物样品),对虎的系统地理学、种群结构以及遗传起源进行了全面分析。所用的分子标记包括四千碱基对的线粒体DNA、30个核基因组微卫星位点,以及MHC-DRB基因。研究结果表明,虽然虎的整体遗传多态性较低,但是种群分化程度很高,它们被划分为6个,而不是5个现存亚种(1)西伯利亚虎(P.t.altaica);(2)苏门答腊虎(P.t.sumatrae);(3)孟加拉虎(P.t.tigris);(4)华南虎(P.t.amoyensis);(5)印支虎(P.t.corbetti);(6)新定义的亚种马来虎,暂命名为P.t.Jacksoni。由于所研究样本量有限,目前暂定的华南虎亚种还需进一步确定。现有华南虎圈养种群包括遗传关系相距较远的两支一支与印支虎(P.t.corbetti)无异;而另一支则与其他种群均相距甚远,可能代表了真正的华南虎(P.t.amoyensis)。利用分子生物学方法对中国动物园中圈养虎的遗传起源调查亟待进行,以确认该圈养种群整体的遗传独特性或者非独特性。换言之,这将是确认华南虎是否仍然存在的关键。 | 罗述金 Jae-heup Kim Warren E.Johnson Dale G.Miquelle 黄世强 潘文石 James L.D.Smith Stephen J.O'Brien | 2006 | Zoological Research2006，27，4： | 10 |
| 2 | Connecting supplier and DoD blockchains for transparent part tracking显示文摘Blockchains have been around for more than ten years,and since 2015,a plethora of systems have been launched to target more flexible use cases.More recently,several enterprise blockchain systems,such as Consensys Quorum and Hyperledger Fabric,have been launched to make blockchain simpler to apply in complex organizational configurations.In this paper,we identify a specific Department of Defense use case,extrapolate requirements,and perform a thorough assessment of the different layers of the blockchain stack to identify the existing state of the art and undertake a gap analysis of the technology for this context.We describe a platform that meets many of these challenges and show how we architected,designed,and implemented a solution for this use case for deployment at NAVAIR.This solution connects transactions from two separate blockchain systems,Consensys Quorum and Hyperledger Fabric,by using a graph-based approach that preserves privacy while enabling full transparency across the military and supplier networks. | Francis Asuncion Adam Brinckman Dwayne Cole Jeffrey Curtis Matt Davis Timothy Dunlevy Calvin Farmer Andrew Harrison Daniel P.Johnson Joshua Joyce Chris Klubertanz Jonathan Lane John Martin Jarek Nabrzyski Joel Neidig Deysi Olivares Gregory Robinson Gabriel Rodriguez Chris Root Karen Rowand Al Salour Jeff Score David Scott Ian Taylor Chandler Thompson Huy Truong Xiqun Wang Dale Warren | 2021 | Blockchain(Research and Applications)2021，2，3： | 1 |
| 3 | HVDC Macrogrid Modeling for Power-flow and Transient Stability Studies in North American Continental-level Interconnections显示文摘voltage direct current(HVDC)transmission lines are being constructed throughout the world,aided by advancements in power electronics and the potential value to transfer power between distant areas and off-shore locations.Multiple HVDC lines within and across large AC interconnections could bring about economic benefits such as interregional capacity exchange and transfer of low-cost,distant electric energy directly to load centers.In addition,network configuration of HVDC lines could result in additional benefits that have not been deeply studied.This paper describes the modeling process for continentallevel power system interconnections with the addition of multiple HVDC lines configured as a macrogrid.The models used for study are based on industry-accepted power-flow and dynamic system models for the North American Eastern and Western Interconnections.The model provides insight on feasibility and initial steady-state and stability tests of the HVDC macrogrid and its interactions with the existing electricity infrastructure,opening the door to analysis of the technical value of such a macrogrid. | Marcelo A.Elizondo Nihal Mohan James O’Brien Qiuhua Huang David Orser Warren Hess Hilary Brown Wenchun Zhu Divya Chandrashekhara Yuri V.Makarov Dale Osborn James Feltes Harold Kirkham David Duebner Zhenyu Huang | 2017 | CSEE Journal of Power and Energy Systems2017，3，4： | 0 |
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