Results 31 to 40 of about 30,964 (197)
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
Research Status and Prospect of Vitamin Bio-Manufacturing(维生素生物制造研究现状与展望) [PDF]
Shipin kexue jishu xuebaoVitamins are essential organic small molecules that maintain normal physiological functions in living organisms. Most vitamins cannot be synthesized autonomously by the human body and must be supplemented through food or pharmaceuticals to meet ...
HUANG Lianggang(黄良刚) +4 more
doaj +1 more source
A Kind of Large Load Light UAV Conceptual Design Platform and Manufacturing [PDF]
, 2016 近年来，无人机在军事领域的地位越来越重要；在民用领域，无人机的重要性也日益凸显。轻型无人机具有结构简单、体积较小、飞行高度低、飞行速度慢等特点，俗称“低小慢”航空器，可以利用较小的空间进行收放，起飞准备时间短，方便使用者利用有限的时间和空间进行工作。近几年来，随着飞控技术被不断重视，各方面科研力量都着手研制自己的飞控系统，同时各个拥有航空背景的高等学府也纷纷投入其中。作为高校，研制飞控系统需要有适合做飞行实验的飞行平台，此时，轻型无人机就可以发挥重要作用。因此 ...
黄荣
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
单相短路时220 kV变压器中性点过电压及避雷器并联棒间隙的动作特性仿真试验研究
Dianci bileiqi, 2022 为了明确一起相同位置，不同相别发生单相接地故障时，仅有一次造成对侧220 kV主变中性点间隙击穿的原因，利用EMTP电磁暂态程序，分别计算了2起单相接地故障下，对侧220 kV主变中性点的暂态过电压。分析了影响中性点过电压的因素，最后，仿真研究了单相接地故障下，中性点避雷器与间隙并联的动作特性，试验验证了仿真的有效性。研究表明：暂态电压波由电缆进入架空线，是造成连接在架空线处所有不接地变压器中性点电压抬高的主要原因；单相短路下，只要中性点电压超过间隙的击穿电压，间隙优先避雷器动作。
李爽 +4 more
doaj
Conservation Biology, EarlyView.Abstract Achieving global conservation policy goals requires the ability to set and measure progress toward science‐based targets for biodiversity. The species threat abatement and restoration (STAR) metric was developed to enable actors to set science‐based targets for species.
Louise Mair +17 more
wiley +1 more source
Kongjian kexue xuebao未认知与不确定性是深空探测任务的基本特征. 本文基于战略导向的体系化基础研究, 建立了一种面向科学价值最大化的探测场景和以可靠性为核心技术基础的深空探测自主运行可信性技术体系. 分析研究了深空探测场景下的可靠性概念; 面向精确感知、最优计算、准确决策、快精准执行的目标要素, 提出了深空探测自主运行的可信性体系框架以及“需求－认知－工程”总体技术架构; 针对自主运行可信性的关键技术难点, 开展了可靠性导向的多物理场、强耦合白盒建模, 复杂网络故障传播机制分析, COTS元器件深空探测应用的高可靠保证 ...
党 炜 +10 more
doaj +1 more source
Harnessing social media data to track species range shifts
Conservation Biology, EarlyView.Abstract Biodiversity monitoring programs and citizen science data remain heavily biased toward the Global North. Especially in megadiverse countries with limited biodiversity records, incorporating social media data can help address existing data gaps.
Shawan Chowdhury +15 more
wiley +1 more source
Novel PWM Techniques and Topologies for Multi-Level Inverters [PDF]
, 2001 博士論文 (Doctoral dissertation)doctoral ...
406371, K. R. M. Nimal Ratnayake
core
Biodiversity‐driven spatial conservation planning to delineate temporally stable regions
Conservation Biology, EarlyView.Abstract The accelerating loss of biodiversity underscores the critical need for effective conservation strategies, particularly in the face of climate change and anthropogenic pressures. We devised a conservation planning framework that adopts a temporal stacking approach to species distribution models and landscape connectivity analyses. These models
Mattia Iannella +5 more
wiley +1 more source