Results 11 to 20 of about 9,107 (117)
全球能源互联网, 2021 为有效提高多个区域综合能源系统（regional integrated energy system,RIES）的能源利用率,同时合理配置储能系统的容量,提出一种多RIES互联下的共享储能系统容量优化配置模型。首先,介绍了共享储能背景下多RIES运行框架,分析了共享储能系统的运行模式。其次,针对一类包含热电联产机组与热泵等设备的RIES,建立以共享储能系统作为上层、多个RIES作为下层的双层优化配置模型。其中,上层以共享储能系统盈利最大作为目标,利用遗传算法对共享储能的容量、充放电功率进行优化 ...
帅轩越, 王秀丽, 黄晶
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Journal of Advanced Nursing, Volume 76, Issue 6, Page 1436-1448, June 2020., 2020 Abstract Aim To describe a randomized controlled trial (RCT) protocol that will evaluate the effectiveness of a digital patient journey (DPJ) solution in improving the outcomes of patients undergoing total hip and knee arthroplasty. Background There is an urgent need for novel technologies to ensure sustainability, improve patient experience, and ...
Miia Jansson +7 more
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全球能源互联网, 2019 光伏发电具有随机性、间歇性等特点，其大规模接入配电网给电网安全、经济运行带来挑战。储能是解决高渗透率光伏输出功率波动的有效手段。为此，提出一种结合相邻时段实时预测误差和极限学习机的光伏功率区间预测方法；提出一种分布式储能的区间离散SOC均衡控制策略。在此基础上，构建了包含储能运行成本、系统网损和电压偏差的多目标区间优化运行模型。应用区间泰勒展开的仿射算法将不确定区间潮流问题转化为确定性代数方程组实现潮流计算，同时依据电压-功率和网损-功率灵敏度矩阵重新表达目标函数，采用线性规划法求解。最后 ...
袁晓冬 +4 more
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A Multifunctional Reducing Molecular Dopant for 16% Efficient Tin Perovskite Solar Cells
Rare Metals, EarlyView.ABSTRACT Although lead‐based photovoltaics have seen remarkable progress, tin‐based perovskite solar cells (Sn‐PSCs) continue to face challenges due to their limited power conversion efficiency and insufficient operational stability. The primary cause of this performance gap is the susceptibility of Sn2+ to oxidation, which promotes rapid defect ...
Xianyong Zhou +12 more
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Gallium‐Doped α‐MnO2 Cathode for High‐Performance Aqueous Zinc‐Ion Batteries
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Rechargeable aqueous zinc‐ion batteries (ZIBs) have received significant attention because of their high safety and low cost. MnO2 as a cathode material hampers the application of ZIBs due to its structural instability and dissolution during the operation of the battery.
Wen‐yu Xu +13 more
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World Water Policy, Volume 11, Issue 4, Page 939-952, November 2025.ABSTRACT This study reviews the status of access to water supply, sanitation, and solid waste management (SWM) services in Uganda, examining the influence of national government policies, institutional frameworks, and financing mechanisms. It employs a mixed‐methods approach, combining qualitative analysis of primary data from key informant interviews ...
Ronald Sakaya +3 more
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Wildlife Letters, Volume 3, Issue 3, Page 91-98, September 2025.The edge densities of cropland, developed land, and water bodies (panel a) predict the spatial probability of mammalian predation on wild turkeys (panel b) using Mahalanobis distance factor analysis in Quitman County, Mississippi, United States. The three habitat fragmentation variables are represented by three arrows, respectively.
Guiming Wang +2 more
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Guangtongxin yanjiu, 2021 针对在蜂窝系统下引入设备到设备（D2D）通信导致的干扰和能量消耗问题，文章提出首先将D2D通信技术与全双工传输技术相结合，构造一个全双工D2D通信链路场景。然后，在满足用户最小速率要求和功率阈值的条件下，分别解决了功率控制和资源分配问题，以提高全双工D2D通信链路的能量效率。最后，利用序列二次规划算法解决功率控制问题；利用所提出的自适应禁忌搜索算法解决最优资源分配问题。仿真结果表明，与现有算法相比，文章所提算法具有有效的搜索算子和扰动机制，并能以较低的计算复杂度来解决全双工D2D通信链路能效优化问题。
缑丽莎, 徐岩
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Ultrasound in Obstetrics &Gynecology, Volume 65, Issue 5, Page 624-632, May 2025.ABSTRACT Objectives Placental insufficiency contributes to many obstetric pathologies, but there is no bedside clinical tool to evaluate placental perfusion. We have developed a method to acquire multiple three‐dimensional (3D) power Doppler (PD) ultrasound (US) volumes of placental vasculature, with infrared camera tracking of the precise spatial ...
A. Xue +5 more
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Guangtongxin yanjiu, 2019 在超密集网络场景中,针对以用户为中心的重叠虚拟小区系统的和速率的最大化,提出了一种基于效用函数最优化模型的功率分配方案。通过分层交替迭代算法求解最佳功率分配,首先将原问题分解为功率分割和虚拟功率分配两个子问题;然后在高层功率分割中引入拉格朗日函数,求解出一种基于均衡策略的最佳功率分割算法,在底层利用虚拟功率完成进一步的功率分配。由于功率分割系数采用了最大化信干漏比（SLNR）的特征矢量形式,从而实现了信号增强与干扰减少之间的均衡。仿真结果表明,该算法在性能上优于传统的功率分配算法,有效减少了干扰 ...
鲁楠, 秦洪峰, 孙长印, 江帆
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