Results 61 to 70 of about 35,131 (202)
Zhejiang Daxue xuebao. Lixue ban, 2017 应用Dancer全局分歧理论，研究奇异边值问题正解的存在性和多解性，其中f：[0，1]×[0，∞）→[0，∞）连续.给出了关于此类问题正解存在的充分条件，该充分条件与相应线性问题的第1个特征值有关，且所涉及的值是最优的.
YANDongming(闫东明)
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Differences in characteristics between naturalized threatened plants and other threatened plants
Conservation Biology, EarlyView.Abstract Many non‐native plant species introduced by humans have become naturalized. At the same time many species are threatened in their native range. However, the number of plant species threatened in their native range that are naturalized elsewhere remains unknown.
Weihan Zhao +10 more
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Design and Implementation of Log Processing Engine Based on Spark [PDF]
, 2016 当前互联网行业迅速发展，许多互联网平台每天产生大量访问日志，能否以及如何从日志中挖掘出极有价值的信息成为从业人员关心的重要方向，但随着日志数据量的不断增长，依靠通用型单机分析工具已经无法满足业务需要。因此，一个可满足各种不同的临时搜索分析需求、提供可视化操作界面、定制化日志处理和开放式分析、针对海量日志的迭代处理和查询引擎系统的出现成为必要。 基于以上现状，本文设计了一个基于Spark平台的分布式日志处理引擎系统，以满足海量Web访问日志进行定制化处理和开放式分析的需要。系统设计了日志采集、日志查询 ...
张凤
core
Comprehensive framework for assessing and optimizing existing research networks
Conservation Biology, EarlyView.Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East +2 more
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On the steady state bifurcation of the binary alloys system(二元体相分离模型的静态分歧)
Zhejiang Daxue xuebao. Lixue ban, 2019 运用非线性分歧理论，研究二元体相分离模型的静态分歧，给出了一个与该模型线性问题第一特征值相关的临界值。当参数超过该临界值时，二元体相分离模型有静态分歧发生，此时相应的二元体有相分离现象发生。此外，提出影响二元体相分离现象发生的主要因素是晶格间距和二元体所在区域的形状。
YANDongming(闫东明)
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Conservation Biology, EarlyView.Abstract Recognition and engagement of Indigenous Peoples and local communities (IP&LCs) and other traditional knowledge (TK) holders in formal biodiversity governance remain limited, despite their significant contribution to the conservation and sustainable use of biodiversity through their knowledge, innovations, practices, and land stewardship.
Kinga Öllerer +8 more
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Zhejiang Daxue xuebao. Lixue banIt is worth focusing on the development trend, spatial pattern, and multi-scale effects of digital technology innovation which is the core engine driving the development of the digital economy.
李云霞(LI Yunxia) +2 more
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Micro-blog Explosive Events Analysis and Interactive Visualization Design [PDF]
, 2016 社交网络作为一个公共信息的聚集平台，其信息的走势与社会焦点的脉动息息 相关。如果能够从这些信息中提取有价值的爆发性事件进行实时检测和跟踪，并将 这些数据进行可视化处理，用于政府信息监控、商业信息提取、社会现象研究和民 意调查等方面，将产生不可估量的社会意义和商业价值，从而使社交网络可以更好 地为社会服务。 本文针对中文社交网络爆发性事件定义，提出了一种爆发性分析和评估的方法， 对事件爆发性进行了详细的分析，并利用模糊综合评价对爆发性进行评估。为了可 以使用户更直观的了解爆发性事件分析结果 ...
王倩
core
Evaluating the empirical basis for threat attribution in the IUCN Red List
Conservation Biology, EarlyView.Abstract Understanding the impacts of different threats on species is key to successful conservation interventions and policies. The International Union for Conservation of Nature (IUCN) assesses threats to species, and the organization's Red List of Threatened Species is a key conservation tool.
Ena Humphries +5 more
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大数据当前数字政府建设已进入深水区，政务大数据平台作为数据底座支撑各类政务信息化应用，其隐私数据的安全性和合规性一直被业界广泛关注。联邦学习是一类解决数据孤岛的重要方法，基于联邦学习的政务一体化大数据平台应用具有较高的研究价值。首先，介绍政务大数据平台及联邦学习应用现状；然后，分析政务大数据平台面临的隐私数据的采集、分类分级、共享三大管理挑战；接着，阐述基于联邦学习的推荐算法和隐私集合求交技术的解决方法；最后，对政务大数据平台隐私数据的未来应用进行了总结和展望。
吴坚平, 陈超超, 金加和, 吴春明
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