Results 31 to 40 of about 10,576 (166)
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The realization of bifunctional perovskite devices integrating photovoltaic (PV) and light‐emitting diode (LED) capabilities requires precisely controlled grain architectures to facilitate dual carrier transport pathways. In this work, sulfaguanidine (SG) molecules were introduced into the perovskite solution to reconstruct the crystallization
Jiong Li +7 more
wiley +1 more source
Highly reliable access algorithm for PD-NOMA based IoT with delay guarantee [PDF]
, 2020 A single-hop PD-NOMA network supporting k-successive interference cancellation (k-SIC) was considered.Given the real-time performance requirements,how to maximize the average reliability of uplink transmissions by the joint users grouping and power ...
Chaonong XU, Jianxiong WU, Yongjun XU
core +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The construction of p–n homojunctions represents a promising strategy for effective solar‐driven photocatalytic hydrogen evolution, owing to their inherent advantages of superior lattice matching and minimized charge transfer resistance. However, this approach remains largely unexplored.
Yueqiang Lin +6 more
wiley +1 more source
Optimal sub-carriers power allocation in MC-DCSK communication system [PDF]
, 2015 研究了多载波差分混沌移位键控(MulTI-CArrIEr dIffErEnTIAl CHAOS SHIfT kEyIng,MC-dCSk)调制中的子载波功率分配问题,基于功率分配模型,推导了MC-dCSk以子载波功率为参数的误比特率(bIT ErrOr rATE,bEr)表达式,基于该表达式,建立了最小化误比特率的最优化问题,并用凸优化方法获得了子载波最优功率的分配策略。通过仿真,比较了最优功率分配与等功率分配情况下,MC-dCSk在加性高斯白噪声(AddITIVE WHITE gAuSSIAn ...
代红英, 徐位凯
core
Performance analysis of IRS aided downlink NOMA short-packet communication with hardware impairment [PDF]
, 2023 Impact of hardware impairment on the performance of intelligent reflecting surface (IRS) aided downlink two-user short-packet communication (SPC) systems using non-orthogonal multiple access over Rician channels was analyzed.Phase adjustments at the IRS ...
Jing XU, Lei YUAN, Mingxiu MO, Yan LEI
core +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Transition metal‐based amorphous/crystalline (a/c) heterostructured catalysts have garnered significant attention due to their exceptional activity, stability, and cost‐effectiveness. However, the precise synergistic regulation of interfacial composition and phase states remains challenging.
Haoran Li +3 more
wiley +1 more source
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
doaj
Design of RF Transmit and Receive Coils for Low Field MRI [PDF]
, 2016 在临床医学应用中磁共振成像技术已经很普及，它成为现代医学影像领域中重要的医学影像检查手段。射频线圈在磁共振系统用来发射和接收射频信号的重要器件，对成像质量有着很关键的作用。水平场系统低场磁共振成像设备的射频线圈结构和高场磁共振设备中使用的射频线圈由于主磁场方向的不同存在着很大的差异。垂直场下射频发射线圈的设计难度相对比较大，相控阵线圈能够获得较大成像区域的同时也具有较高的信噪比，而且相控阵线圈还能够应用于并行成像技术，加快成像速度。国内对低场磁共振开放式射频发射线圈和相控阵线圈技术的研究都比较少 ...
温桢荣
core
Deep reinforcement learning based resource allocation algorithm in cellular networks [PDF]
, 2019 In order to solve multi-objective optimization problem,a resource allocation algorithm based on deep reinforcement learning in cellular networks was proposed.Firstly,deep neural network (DNN) was built to optimize the transmission rate of cellular system
Jia SHI +5 more
core +1 more source
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
wiley +1 more source