Results 91 to 100 of about 35,131 (202)
[Big Data Management and Application: Specialty Construction Overview and Exploration of Personnel Training System in Medical Schools]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue Ban, 2022 Song YL, Song GQ, Wu J, Du YN, Li YG.
europepmc +1 more source
Conservation Biology, EarlyView.Abstract Bycatch in fisheries is one of the most serious threats to pelagic seabirds, causing major population declines. Mitigation measures can reduce bycatch substantially, but many fisheries fail to apply best practices, and seabird mortality remains high.
V. Warwick‐Evans +2 more
wiley +1 more source
Design and Implementation of Public Security Intelligence Search-Platform Based on Big Data Technology [PDF]
, 2015 公安信息化的高速发展积累了丰富的业务数据，种类不断增加、结构不断异化、总量不断增长，截至2014年底，全国公安机关掌握的数据资源已达100多类上千亿条,信息数据已成为继警力资源、装备资源之后的新一类核心资源。搜索是公安信息获取和进行研判的基础手段。传统的全文搜索系统存在大量结果数据“堆积”、再次筛查工作量大、目标结果无法精准定位，使用效率低下等问题。利用分布式计算架构，融合了SolrCloud、Zookeeper、高速缓存等技术手段，以人、车、案为对象重组数据，采用智能分析、对象全景档案等手段 ...
何志昭
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Conservation Biology, EarlyView.Abstract Although significant biodiversity has been safeguarded by protected areas (PAs), biodiversity trends continue downward. Within the frameworks of the EU Biodiversity Strategy for 2030 and the new EU Restoration Regulation (2024), conserving critical biodiversity areas is essential.
George Kefalas +14 more
wiley +1 more source
Using customs data to understand overlooked trade in non‐CITES birds between Africa and Asia
Conservation Biology, EarlyView.Abstract The international trade in live birds poses risks to animals, people, and biodiversity. To effectively mitigate these risks, decision‐makers require information on the volume, dynamics, and direction of trade. Despite Africa once being the largest exporter of birds by region, very little data exist on recent trade in live birds not listed on ...
Alisa Davies +4 more
wiley +1 more source
Design and Implementation of Financial Comprehensive Data Analysis System Based on Data Warehouse [PDF]
, 2015 近年来财政部门对一些挖掘技术的掌握运用以及数据仓库的构建都还有相当多的工作要去做。多数财政部门的数据分析仍然主要以报表等传统方式为主，相当于数据的初次利用，是一种“平面化”的分析。而数据挖掘的主要方式既包括报表统计，也包括数据的建模分析和潜在知识的挖掘，相当于数据的二次利用或多次利用，是一种“立方体式”的分析。 在大数据背景下，财政信息化应朝着以数据为核心的决策支持系统建设与应用的方向发展，着重开展数据的提取、整合分析、利用工作并将数据分析的范围从“已知”扩大到“未知”，从“过去”推向“未来 ...
赵重光
core
Conservation Biology, EarlyView.Abstract Knowledge of species distributions is essential for informing policies on nature conservation and restoration. However, updating them on a regular basis and doing so in a harmonized manner at the international level is difficult. The European Bird Census Council integrated national monitoring data covering 5 years to update farmland bird ...
Sergi Herrando +54 more
wiley +1 more source
Research of KNN Graph Algorithm Parallelization based on Spark and Its Application [PDF]
, 2016 近些年来，随着计算机科学技术的迅速发展，越来越多的海量数据信息在许多行业中随之产生，海量数据对数据处理的效率提出了极大的挑战。同时在此背景下分布式计算也得到了大力发展，Hadoop使得用户可以进行超大数据集的分析，但是其基于磁盘的MapReduce的计算严重影响了计算性能，而Spark引入RDD(ResilientDistributedDatasets)基于内存计算迎合了广大用户的需求，极大提高了分布式并行计算的效率。虽然在众多大数据工具中，Spark得到了很大的关注，但是Spark还不是十分完善 ...
汪龙宝
core
Informal supply chains of wild meat from rural Amazonia and food security in an urban center
Conservation Biology, EarlyView.Abstract Iquitos, the most populated city in the Peruvian Amazon, is a hub in the regional supply chain of wild meat and supplies urban consumers. Studies on wild meat consumption have focused primarily on markets, limiting the scope of species considered to those that are economically valuable and potential inferences from those data.
Fiorella Briceño Huerta +3 more
wiley +1 more source
Pairs trading strategy of ETF based on mixture Copula(基于混合Copula的ETF配对交易策略)
Zhejiang Daxue xuebao. Lixue ban, 2016 配对交易是一种非常普遍的投资策略，被广泛应用于金融市场.距离法和协整法在配对交易策略中使用最普遍，然而，这2种方法只能描述股票之间的线性相关结构.本文基于3类基本的阿基米德Copula函数构成的混合Copula,定量刻画了资产之间的条件相关性，给出了新的配对交易策略，并将其运用于高频ETF市场.实证分析表明，新的策略可以捕获更多相依信息，得到更多的交易机会.
SHENYinfang(沈银芳) +2 more
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