Results 41 to 50 of about 22,745 (142)
World Food Policy, Volume 12, Issue 2, November 2026.ABSTRACT Household food expenditure continues to be a key factor in ensuring the realization of the Human Right to Adequate Food. Particularly in Brazil, access to food can be limited by economic constraints in vulnerable families, especially among farming families, who have been more vulnerable to food insecurity in recent years in the country.
Lucas de Almeida Moura +3 more
wiley +1 more source
The Making of the Right to Food: Tracing Food Policy Conflict and Negotiated Outcomes in Colombia
World Food Policy, Volume 12, Issue 2, November 2026.ABSTRACT The 2016 Peace Agreement between the Colombian Government and the FARC guerrilla group marked a historic step toward ending more than five decades of armed conflict. It also reshaped national food policy with lasting implications. During the negotiations, deep ideological divisions emerged between food sovereignty and food security, and these ...
Felipe Roa‐Clavijo
wiley +1 more source
Shuitu Baochi Xuebao, 2002 水资源是人类生存之本,有效的水权理论以及水权交易体制是保障水资源高效利用的重要条件。目前,我国法律对水权概念界定模糊,水权交易体制存在较大弊病,因此,有必要明确水权的内涵及其法律特征,对现行水权交易体制进行改革。
李铮
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Gaoya dianqi, 2023 抽水蓄能电站与传统GIS电站相比，因开关操作更为频繁，产生VFTO概率更大，同时抽水蓄能电站由于地理环境限制需通过高压长电缆连接地上与地下两部分，接线形式的不同也会使产生的VFTO具有不同的特性。由于VFTO会严重威胁GIS设备、变压器和二次设备的运行安全，尤其是VFTO的幅值是导致设备绝缘损坏的重要因素，因此有必要对抽水蓄能GIS电站的VFTO幅值影响因素与权重进行深入研究。文中以某500 kV抽水蓄能GIS电站为例，采用仿真的方法计算分析了电站中VFTO幅值的影响因素和影响权重 ...
郝国文 +8 more
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The Evolution of Metal Halide Perovskite Transistors
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Metal halide perovskites (MHPs) offer a revolutionary pathway for next‐generation field‐effect transistors (FETs) because of their exceptional carrier mobilities and cost‐effective processability. However, their transition to practical electronics is significantly challenged by intrinsic instability and imbalanced charge transport. This review
Jiangnan Xia +8 more
wiley +1 more source
Gaoya dianqi, 2019 客观合理地评估断路器运行状态是提高设备运行可靠性、保证电力系统安全稳定运行的重要手段。通过将真空断路器评价标准处理为理想区间数概念,提出了基于组合赋权思想的理想区间法来评估断路器状态。首先针对单一赋权方法的局限性,采取基于灰关联度思想的改进方法确定指标主观权重,基于数据变异度的熵权法得到客观权值,同时引入矩估计理论建立二者偏差最小的规划方程组以求出指标最优组合权重;再运用多目标决策的理想区间法计算待评样本与标准理想区间的距离值,倒代换归一化处理后根据择近原则得出断路器评估等级。算例表明,该方法有效可行 ...
王泉 +5 more
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World Medical &Health Policy, Volume 18, Issue 3, September 2026.ABSTRACT Confrontational violence still puts catastrophic burdens on children, with 2024 being the highest recorded levels of displacement, malnutrition, injury, and deprivation in contemporary humanitarian history. Children's surgical care is still grossly underrepresented in health responses worldwide in the prevention of avoidable deaths and long ...
Gaurav Chanderprakash Mittal +4 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2010 局部加权回归方法(Lowess方法)作为一种较常见的基因芯片数据标准化方法涉及到众多的参数和权函数.对于权函数的选择一直以来都是采用三次权函数.因此本文从误差为重尾型的t分布出发,模拟不同自由度的基因芯片数据,然后选择不同的权函数对这些数据进行Lowess方法标准化,并利用残差平方和、标准化后的M和A值的相关系数及MA图作为评判标准,最终得到相关指标量与权函数的变化关系.
DONGFang-ying(董芳英) +1 more
doaj +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The limited crack resistance of coarse grain boundaries and coarse interfaces leads to an incompatibility between high‐temperature strength and ductility in TiAl alloys. Tailoring stress‐oriented textures and multiscale heterogeneous interfaces can effectively impede crack propagation, thereby overcoming this trade‐off.
Kexuan Li +7 more
wiley +1 more source
Gaoya dianqi, 2012 电力变压器各部件故障模式之间具有高度的复杂性和关联性,且设备价值昂贵,实施可靠性试验困难,所以难以利用传统重要度定义的方法进行重要度分析。鉴于上述问题,笔者提出了基于梯形模糊数的重要度评定方法。通过分析影响故障模式重要度的因素,建立了重要度评价指标体系,并借助德尔菲法制定了指标的评价等级及相应评分准则,引入了协调程度的概念对专家评分进行修正,并利用梯形模糊数确定指标权重,最终通过线性加权将指标与指标权重结合,得到了各故障模式的重要度。计算实例表明,该方法简便、有效,可用于电力变压器的可靠性评估及维修决策。
刘军, 周婧婧, 谢世恒, 宋伟
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