Results 31 to 40 of about 108,435 (188)
Jianzhu Gangjiegou Jinzhan, 2014 群智能优化算法已被证实可以用于解决实际工程的优化问题。水循环算法可对约束问题进行求解。基于自然界中水循环过程提出的一种新型智能优化算法———水循环算法(WCA),研究了其应用于空间桁架结构优化设计问题的可行性及有效性,论文对两个空间桁架结构进行了截面优化计算分析,并与已有文献优化结果进行了比较,研究结果表明:WCA优化算法相对于群搜索算法(GSO)、启发式粒子群优化算法(HPSO)等优化算法能够提供更快的收敛速度,收敛结果也更好。
章纯, 刘锋, 廖国维, 李丽娟
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Conservation Biology, EarlyView.Abstract Procedural, distributional, recognitional, and epistemic justice aspects of conservation interventions are well documented in contexts where pastoralism is a key livelihood and way of life. Geospatial analyses and representations of wildlife conservation and restoration that are increasingly applied in pastoralist rangeland socioecological ...
Ryan R. Unks
wiley +1 more source
Emerging applications of large language models in ecology and conservation science
Conservation Biology, EarlyView.Abstract Large language models (LLMs) mark a major development in artificial intelligence, with potentially transformative implications for ecology and conservation science. Built on advanced deep‐learning architectures, these models can support a wide range of tasks. We reviewed emerging applications of LLMs, drawing on the wider scientific literature
Christos Mammides +5 more
wiley +1 more source
Jixie chuandong, 2004 针对传统机械优化设计的局限性 ,提出模糊优化建模、模型转化、遗传算法 （GA）优化求解的新思路 ,并对叠簧弹性联轴器进行了基于GA的模糊优化设计。
郭卫, 赵栓峰, 杨桂红
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Scientists’ warning on the global destruction of rock outcrop ecosystems
Conservation Biology, EarlyView.Abstract Rock outcrops are geological formations that harbor a highly specialized biota adapted to harsh environmental conditions that differ from their surrounding landscapes. They are globally distributed, especially in old, highly weathered landscapes, and can function as habitat islands containing high levels of endemism and distinct evolutionary ...
Luiza F. A. de Paula +19 more
wiley +1 more source
Shiyou jixie, 2012 针对目标函数的钻压优化和BP神经网络的钻压优化方法存在的不足，建立了动态成本目标函数，并利用遗传算法对动态成本目标函数进行优化，最后应用实例对优化送钻在成本上的优势进行了验证。根据建立的动态成本目标函数和钻井采集的实时数据，利用非线性回归理论完成待优化的成本目标函数参数的求取。优化结果表明，优化钻压钻井方式有效延长了钻头寿命，缩短了起下钻时间，节省了钻井成本；与恒钻压钻井方式相比，优化钻压钻井方式每米成本上升较慢。
张奇志, 付勃
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Conservation Biology, EarlyView.Abstract Ecological niche models (ENMs) are used to assess the abiotic preferences of species by linking their occurrences to the environmental conditions in which they live. We developed a fossil‐informed ENM framework that integrates mid‐Holocene and modern occurrences to test niche stability and reconstruct abiotic niche characteristics for four ...
Claire. M. Williams +3 more
wiley +1 more source
Guangtongxin yanjiu, 2000 在 WDM全光网的波长数优化设计中 ,本文采用最长路径优先的波长分配策略对 Naohide Nagatsu等人提出的 WP优化方案进行了改进。改进后的方案比原 WP优化方案更加简洁 ,并且仍然能够达到原 WP优化方案的优化效果。
夏俊, 吴志坚
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Modeling seed germination data to meet biodiversity conservation needs in the Mediterranean
Conservation Biology, EarlyView.Workflow to assess the availability and quality of germination data and assign species' thermal risk in the Mediterranean. (a) Assessment of data availability, including the phylogenetic distribution of the number of records (i.e. available germination data); (b) data quality assessment; and (c) assignment of climate risk categories for species that ...
Diana María Cruz‐Tejada +2 more
wiley +1 more source
Jixie chuandong, 2002 齿轮减速器的参数优化是一个常见问题。在建立了优化模型后 ,设计人员通常需找到合适的优化程序 ,否则 ,设计人员就必须自己编制优化程序。这是一件既费力又费时的事情。MatLab是一个面向工程的大型科学计算工具软件 ,它包含许多工具箱 ,优化工具箱是其中之一。本文首先建立了单级齿轮减速器的可靠性优化设计模型 ,然后描述了如何利用MatLab优化工具箱解决齿轮减速器的参数优化问题的具体方法。事实证明这是一个简单易行的有效的手段 ...
陈满意, 陈定方
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