Results 21 to 30 of about 1,939 (128)
A dynamic simulation model to support reduction in illegal trade within legal wildlife markets
Conservation Biology, Volume 36, Issue 2, April 2022., 2022 Abstract Sustainable wildlife trade is critical for biodiversity conservation, livelihoods, and food security. Regulatory frameworks are needed to secure these diverse benefits of sustainable wildlife trade. However, regulations limiting trade can backfire, sparking illegal trade if demand is not met by legal trade alone.
Rodrigo Oyanedel +3 more
wiley +1 more source
基于随机生产模拟的火电机组深度调峰提升新能源消纳能力评估方法 [PDF]
全球能源互联网, 2019 中国许多地区已经开展火电机组深度调峰辅助可再生能源消纳的试点工作，但基于场景的时序模拟方法在分析其调峰效果时受到各类不确定因素影响，难以覆盖所有的运行场景，导致中长期评估结果准确性不高。因此，时序方法不适用于缺少详细时序数据的电源容量规划。为此基于随机生产模拟方法，面向规划应用提出了一种火电深度调峰提升系统可再生能源消纳效果的评估方法。该方法建立了包括非供热火电机组、热电联产机组和风电等电源在内的供给侧概率模型，分析了在不同火电深度调峰方式下，系统负荷、可再生能源发电的概率特性变化 ...
马彦宏 +4 more
doaj +1 more source
Modelling old‐age retirement: An adaptive multi‐outcome LAD‐lasso regression approach
International Social Security Review, Volume 75, Issue 1, Page 3-29, January/March 2022., 2022 Abstract Using unique administrative register data, we investigate old‐age retirement under the statutory pension scheme in Finland. The analysis is based on multi‐outcome modelling of pensions and working lives together with a range of explanatory variables.
Tero Lähderanta +3 more
wiley +1 more source
Study becomes insight: Ecological learning from machine learning
Methods in Ecology and Evolution, Volume 12, Issue 11, Page 2117-2128, November 2021., 2021 Abstract The ecological and environmental science communities have embraced machine learning (ML) for empirical modelling and prediction. However, going beyond prediction to draw insights into underlying functional relationships between response variables and environmental ‘drivers’ is less straightforward.
Qiuyan Yu +5 more
wiley +1 more source
Conservation Biology, Volume 35, Issue 5, Page 1519-1529, October 2021., 2021 Abstract Understanding how anthropogenic disturbances affect plant–pollinator systems has important implications for the conservation of biodiversity and ecosystem functioning. Previous laboratory studies show that pesticides and pathogens, which have been implicated in the rapid global decline of pollinators over recent years, can impair behavioral ...
Robert J. Gegear +2 more
wiley +1 more source
全球碳市场链接对实现国家自主贡献减排目标的影响分析 [PDF]
全球能源互联网, 2020 和减少温室气体排放、合作应对全球气候变化的重要举措。在《巴黎协定》后各国“自下而上”自主减排新机制下，构建全球链接的碳市场受到越来越多的关注。文中介绍了全球主要链接碳市场发展现状，结合各国国家自主贡献（nationally determined contribution，NDC）减排承诺目标，采用可计算一般均衡模型，对主要国家独立碳市场和链接碳市场情景进行定量模拟。研究表明，全球碳市场链接能够降低全球减排总成本，但对各国的GDP、贸易产生非对称影响。中国、印度、巴西和俄罗斯等国的边际减排成本较低 ...
翁玉艳, 张希良, 何建坤
doaj +1 more source
Effects of site‐selection bias on estimates of biodiversity change
Conservation Biology, Volume 35, Issue 2, Page 688-698, April 2021., 2021 Abstract Estimates of biodiversity change are essential for the management and conservation of ecosystems. Accurate estimates rely on selecting representative sites, but monitoring often focuses on sites of special interest. How such site‐selection biases influence estimates of biodiversity change is largely unknown.
Andrea Mentges +4 more
wiley +1 more source
野生动物学报, 2021 研究表明，气候变化将会使生物多样性降低甚至是物种灭绝。研究气候变化对物种栖息地的影响，对未来研究物种多样性和保护生态系统功能完整性提供实践意义。以梅花鹿（Cervus nippon）为研究对象，将23个环境因子通过去相关性后得到8个环境因子，利用最大熵（MaxEnt）模型模拟了梅花鹿基准气候条件下在中国潜在生境分布，并预测了ssp245和ssp585两种气候变化情景下2021—2040年（2030s）、2041—2060年（2050s）、2061—2080年（2070s）梅花鹿潜在分布。23个环境因子中，
刘策 张日 杜海荣 孙悦 袁子奥 于晶晶 张明海
doaj
中西医结合护理, 2022 With the goal of clinical teaching of specialist nurses, the three-level teaching management structure of nursing department - head of clinical teaching base of dentistry - teaching teacher of teaching group was built in the teaching process, the three ...
DONG Xue (董雪) +4 more
doaj +1 more source
Conservation Biology, Volume 34, Issue 3, Page 743-753, June 2020., 2020 Abstract Information on population sizes and trends of threatened species is essential for their conservation, but obtaining reliable estimates can be challenging. We devised a method to improve the precision of estimates of population size obtained from capture–recapture studies for species with low capture and recapture probabilities and short ...
Linda Bröder +5 more
wiley +1 more source