Results 21 to 30 of about 19,319 (167)
Conservation Biology, EarlyView.Abstract Despite the crucial role of human impacts on biodiversity loss, many assessments of this loss focus on single metrics, such as species richness, and overlook the multidimensional effects of human activities. Because of its importance to ecosystem functioning, we investigated the functional diversity of medium‐ and large‐sized mammal ...
Xueyou Li +8 more
wiley +1 more source
A Study on the Establishment of Ideography and its Derivative Mode [PDF]
, 2016 意符是构成汉字合体字的表意构件，也是汉字系统的基因单位，从意符到衍生字的发展模式，也就是汉字系统形成的意序模式。 本文以《说文解字》部首与各部从属字为基础语料，合理借鉴和运用汉字学、词汇学和训诂学等研究成果，采用定量和定性相结合的方法，对《说文解字》的意符系统进行了多层次的研究。重点在于构建汉字的意符系统，在此基础上对汉字意符系统内部结构进行分析，并重点分析意符在衍生字当中充当的字义角色和字义功能。总结归纳出各个意符场的衍生模式。 首先，坚持以义为主兼顾字形，形义结合的原则，对《说文解字 ...
李磊
core
Survey on the deployment and design for regular topology structures in wireless sensor networks [PDF]
, 2012 In wireless sensor networks,such regular topology structures as Square,Hexagon and Triangle could fully cover the area to be monitored,provide accurate positioning for special events,and achieve better network performance.In order to provide valuable ...
Jian-feng YANG +3 more
core +1 more source
Conservation Biology, EarlyView.Abstract Constructed value of information (CVoI) is an expert elicitation decision‐analytic tool used to prioritize sources of uncertainty based on their potential to improve decision outcomes if resolved. Despite increased application of CVoI, the robustness of CVoI prioritization of sources of uncertainty relative to differences in expert elicitation
Kristin P. Davis +7 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2006 近年来,在组合结构中出现一种新型的结构形式,即由钢筋混凝土柱和钢梁（RCS）组成的框架结构。本文较为系统地阐述国际上RCS组合结构抗震性能的研究情况。主要包括RCS梁柱节点的试验研究、RCS组合框架的试验研究和有限元分析、RCS组合结构的抗震设计及性能分析,以及美日“设计指南”的完善与发展。最后指出RCS结构研究存在的问题和今后的研究趋势。
申红侠
doaj
Design and Implementation of Financial Management System for Small and Medium Enterprises [PDF]
, 2015 随着我国经济发展，我国大中小企业也不断增多，数据量增大，中小企业不仅为解决社会就业问题发挥着巨大的作用，而且以其灵活的经营机制和旺盛的创新活力，为经济增长提供了最基本的原动力。我国中小企业虽然数量众多，但随着市场取向的经济改革的深化，在同大企业的激烈竞争中，中小企业却暴露出明显的弱势地位。 本课题以中小企业为研究对象，针对财务管理的功能，开发一套简洁、快速且能满足基本要求的财务管理系统。本系统将整个系统分成了六个模块，分别实现基础数据管理、凭证管理、账簿管理、期末管理、会计报表、出纳管理 ...
吴诗彦
core
Conservation Biology, EarlyView.Abstract Human development is a driver of global change and a major threat to biodiversity. Protected areas maintain and support biodiversity, but outside stressors, such as climate change and land use change, can negatively influence natural resources within protected areas.
Leah J. Rudge +2 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2016 楼板平面内刚度对整体结构抗震性能有着重要影响,为研究带现浇混凝土楼板的框架-剪力墙组合结构体系的抗震性能,对一个3层2跨缩尺比例为1/4的框架-剪力墙组合结构进行了等效单自由度拟动力试验研究,观察该结构在地震作用下的动力反应,着重分析该框架-剪力墙组合结构在拟动力荷载情况下的破坏机制、耗能性能及变形恢复能力,从而掌握该框架-剪力墙组合结构的动力性能,为完善组合结构设计理论提供可靠的试验依据。结果表明,带现浇混凝土楼板的刚性可以保证结构的空间整体性和水平力的有效传递,该组合结构体系具有良好的抗震性能 ...
韩春, 李青宁, 姜维山
doaj
Scenarios and strategies for future‐proofing ecosystem management under climatic novelty
Conservation Biology, EarlyView.Abstract Climate change is driving unprecedented declines in dominant, habitat‐forming foundation species across marine and terrestrial ecosystems globally. As climatic novelty becomes the norm, ecosystem reassembly will become increasingly common. Predicting and understanding these transitions, and their implications for future ecosystem functioning ...
Lauren T. Toth +14 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2002 在北美,越来越多的组合或混合结构应用于高层建筑的建造中。本文总结了目前北美地区在该领域内的做法,典型的结构体系分为五大类来介绍:1)由组合柱和混凝土托梁构成的框架;2)由混凝土柱和钢托梁构成的框架;3)由组合巨型柱和钢梁构成的框架;4)对角支撑框架;5)带有钢连梁的组合剪力墙。
Joseph P.Colaco
doaj