Results 1 to 10 of about 1,220,092 (147)
针对目前地址匹配算法匹配速率低、空间开销大的不足,提出了一种基于哈希和双数组trie树的多层次地址匹配算法.利用中文地址的分类、分层及组合规则,改进了地址匹配词典的构建方式,减少了词典构建的时间和空间开销.通过哈希运算,将空间坐标存储在哈希表相应的位置上,加快了空间坐标的检索效率.同时,在地址匹配的过程中,采用双向扫描及哈希运算代替传统的数据库检索方式,提高了地址匹配速率.最后,通过实验对算法的有效性进行了验证.
XUCong(徐聪) +5 more
doaj +1 more source
在目前5G系统多用户和高速率的需求下,为实现高效高吞吐的物理下行控制信道(PDCCH)控制资源分配以提高系统性能,提出一种基于奖惩机制的分配算法来进行有效的控制资源分配。该算法首先综合考虑公共空间用户和专用空间用户的资源分配,在生成用户优先级列表时引入奖惩机制,以此改善小区边缘用户的阻塞性能和系统吞吐量,提高用户公平性,然后简化无线网络临时标识(RNTI)表格分配来进行控制资源分配。仿真结果表明,与已有资源分配算法相比,该算法在保证资源利用率不下降的情况下,阻塞概率降低了57%,分配延迟时间减少了30%,
张德民, 曾艳辉
doaj
Abstract Written as a letter to my 28‐year‐old self, this paper explores the development of my engagement with cultural complexes. On August 18, 2009, I finished a chapter applying cultural complexes to a history of China, complete with elaborate charts that seemed to confirm a process by which cultural complexes are formed, and how China’s then recent
Kevin Lu
wiley +1 more source
Abstract Site fidelity is the tendency for animals to repeatedly return to the same locations, either within or between years. Site fidelity enables animals to utilize knowledge of previously visited locations, including assessments of seasonal variations in health and mortality risks (e.g., predation), resource availability, and social benefits such ...
Tobias A. Ross +13 more
wiley +1 more source
Optimizing biodiversity offsetting for habitat succession and colonization dynamics
Abstract Biodiversity offsetting aims to compensate for ecological losses from development through conservation and restoration. However, its long‐term outcomes under repeated impact–offset cycles remain uncertain. Using a conceptual forest succession model, we evaluated how offset outcomes are affected by interactions among compensation scale ...
Konstans Wells +4 more
wiley +1 more source
ABSTRACT Household food expenditure continues to be a key factor in ensuring the realization of the Human Right to Adequate Food. Particularly in Brazil, access to food can be limited by economic constraints in vulnerable families, especially among farming families, who have been more vulnerable to food insecurity in recent years in the country.
Lucas de Almeida Moura +3 more
wiley +1 more source
ABSTRACT Biochemical oxygen demand (BOD) remains a core indicator of organic pollution in freshwater monitoring, but its role in water policy and practice is changing as water‐quality assessment moves toward predictive, integrative, and decision‐support approaches.
Isadora Favero Roque Cenci +5 more
wiley +1 more source
采用瞬时扫描法研究了东方白鹳(Cionia boyciana)越冬行为的活动节律和时间分配。结果表明:笼养东方白鹳在越冬期其活动有一定的节律性;越冬期的主要行为时间分配比例分别为静栖行为59.25%、避风行为11.17%、觅食行为6.41%、瞭望行为5.56%、理羽行为5.39%、游走行为5.14%;成年个体与幼雏在越冬行为时间分配上表现出了很大的差异;两性间越冬行为时间分配的差异不大;不同的温度、天气条件,对笼养东方白鹳越冬行为有影响。经观察发现:东方白鹳在高纬度北方地区越冬 ...
马雪峰 +4 more
doaj
Beyond Evidence: How Framing Shapes Public Health Policies During Health Crises
ABSTRACT Does the level of evidence that accompanies policy action depend on how a problem is framed, and on who frames it? This article examines these questions in the context of health crises. Bridging sociological and equivalence framing theories, it treats frames as preexisting interpretive schemes shared within communities of actors, whose ...
Antoine Claude Lemor, Eric Montpetit
wiley +1 more source
采用瞬时扫描法研究了白鹤越冬行为的活动节律和时间分配。结果表明:越冬期笼养白鹤行为时间分配依次为静栖33.65%,觅食20.61%,理羽12.67%,避风11.37%,瞭望9.36%,啄雪草5.30%,游走2.96%,趴卧1.86%,鸣叫1.49%,展翅0.74%。笼养白鹤在越冬期活动有一定的节律性。两性间越冬期其行为和时间分配有一定的差异。不同的温度、天气条件,对笼养白鹤越冬行为有影响。
刘丹, 田秀华, 何相宝, 邬楠
doaj

