Results 61 to 70 of about 14,950 (229)
大数据为提高图像清晰度，解决传统图像在去雾过程中存在的特征提取困难、去雾不彻底等问题，提出一种基于生成对抗网络的多特征融合端到端去雾网络。该网络由生成器和判别器组成，生成器采用编解码结构，通过多特征提取融合（MFEF）块提取多种感受野下的高维表征信息。判别器使用一系列卷积计算对生成图像和清晰图像进行特征差异分析，引导生成器输出更加真实的去雾图像。实验结果表明，该算法在有效消除雾霾干扰的同时，能够最大限度地保留图像的原始色调。与现有方法相比，该算法在峰值信噪比、结构相似性客观评价指标上分别提升了2.588 dB、
司亚中, 张旭龙, 杨帆, 王健宗, 程宁, 肖京
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Challenges in assessing the effects of environmental governance systems on conservation outcomes
Conservation Biology, Volume 39, Issue 1, February 2025.Abstract Effective governance is crucial for the success of conservation projects aimed at protecting wildlife populations and supporting human well‐being. However, few large‐scale, comprehensive syntheses have been conducted on the effects of different environmental governance types on conservation outcomes (i.e., biological and ecological ...
Raphael A. Ayambire +17 more
wiley +1 more source
, 2018 为更加准确识别某中型客车怠速工况下的方向盘振动来源,提升传递路径分析精度,文中总结了基于悬置刚度法分析振动传递路径的基本方法,并以该车方向盘为研究对象开展方法验证。首先,通过计算该车悬置软垫预载力、对已有的悬置软垫数据进行多元回归拟合以及整车方向动刚度转化计算出该悬置软垫实际动刚度;其次,测试系统水平频响函数以及激励点与响应点的加速度信号;再次,用基于阻抗矩阵法TPA所得的结果以及实测结果作为标杆进行对比,比较结果显示悬置刚度法TPA具有较高的精度 ...
侯亮 +4 more
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Zhejiang Daxue xuebao. Lixue ban, 2007 用渐近连分数的性质和Pell方程的解类特点，得到了指数丢番图方程的解（x，y，n）的性质及其较为精确的上界 ...
YANGShi-chun(杨仕椿), HEBo(何波)
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A spatially explicit assessment of factors shaping attitudes toward African elephant conservation
Conservation Biology, Volume 39, Issue 1, February 2025.Abstract Conservation plans that explicitly account for the social landscape where people and wildlife co‐occur can yield more effective and equitable conservation practices and outcomes. Yet, social data remain underutilized, often because social data are treated as aspatial or are analyzed with approaches that do not quantify uncertainty or address ...
Sarah L. Carroll +9 more
wiley +1 more source
, 2009 本文提出了一种简单的图像质量评价方法,其原理是利用小波变换构建了一种图像质量评价标准。首先,对图像进行二维小波变换;然后分别在得到的四个频带上进行图像差异度比较;最后取平均值作为归一化的图像质量评价标准。通过两组图像的实验结果仿真分析表明 ...
倪晓明
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Politics &Policy, Volume 53, Issue 1, February 2025.ABSTRACT Growing attention to “degenderization” reforms that aim to encourage men's caregiving roles may generate opposition from groups advocating to prioritize mothers' right to care. This article seeks to understand the politics of degenderization through the case of Spain, the only state with equal non‐transferable parental leave entitlements for ...
Manuel Alvariño
wiley +1 more source
Policy Studies Journal, Volume 53, Issue 1, Page 29-48, February 2025.Abstract The question of the performance of polycentric governance over time is insufficiently addressed in the literature. By performance, we refer to the ability of polycentric governance actors to design rules and engage in coordination processes that allow them to achieve their goals.
Grâce Kassis, Nathalie Bertrand
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MnO/Nitrogen-doped graphene composite cathode for high performance lithium oxygen batteries [PDF]
, 2017 本文采用水热法制备了MnO/氮掺杂石墨烯复合材料. 作为非水锂空气电池的正极催化剂, 该复合材料表现出了优异的电化学性能以及循环稳定性.; 在充放电电流密度为0.05 mA cm~(-2)时, 其能量效率高达84.6%, 远高于目前文献所报道的非贵金属催化剂的能量效率,; 也超过了基于贵金属的催化剂.
曹勇 +7 more
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The Design and Implementation of Commercial Bank Internal Report System [PDF]
, 2012 随着计算机技术的不断发展，计算机已在人们生活生产的各个环节得到了广泛的应用。在银行内部，银行系统的信息化也已经成为一个不可逆转的潮流。由于银行业务的复杂性和用户规模的庞大，银行内部有大量的数据和繁琐的流程需要处理，计算机化的银行信息管理系统已成为银行现代化运营路程上必不可少的基础设施与技术支撑环境。一个现代化银行的成功运行离不开完善的业务功能、熟练的银行人员、性能齐全的银行设备一样，如今它也离不开银行管理信息系统。但是正是之前所描述的 ...
张坤
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