Electrical and band-gap properties of amorphous zinc-indium-tin oxide thin films

Zinc-indium-tin oxide (ZITO) films were grown by pulsed-laser deposition.Three different material compositions were investigated:ZITO-30,ZITO-50 and ZITO-70 in which 30％,50％ and 70％,respectively,of the...     

Revitalizing the Public Sphere: The Current System of Discourse and the Need for the Participative Design of Social Action

Public discourse in Western democracies, particularly in the United States, is far from the Habermasian ideal of citizens engaging in a rational discussion of public affairs. Rather than providing an arena for informed deliberation, the growing expertise of the media, lobbyists, and politicians has sub-optimized the current system of discourse to focus on emotional manipulation and the creation of polarized interests, each competing with each other for dominance. Avoiding a potentially disastrous outcome from this unbalancing of public discourse requires a revitalization of the public sphere and a return of the citizen voice in public decision making. To that end, systems thinkers have a tremendous opportunity and can play an important role. This article will explore the current challenges facing public discourse and outline that potential role.     

钢珠对某型发动机压气机一级转子叶片撞击损伤研究

基于钢珠撞击钛合金平板叶片进气边的试验数据,通过模拟撞击过程与撞击结果,确定了仿真所需要的材料参数与计算参数。此后,以某型航空发动机一级转子叶片为研究对象,采用塑性随动硬化本构模型,利用ANSYS／LS-DYNA软件模拟了飞机起飞、降落过程中,叶片最大工作状态下,不同速度钢珠对叶片进气边同一部位的撞击损伤。为定量描述损伤规律,提出了相对能量和临界损伤能量的概念,发现:相对能量不仅能够反映外物质量(大小)及相对速度对叶片损伤的总效果,而且就文中研究的叶片而言,相对能量与损伤深度及损伤宽度呈指数关系,叶片的临界损伤能量值为6.6 J。     

低速运动导电介质中电磁波的传导效应研究

研究了运动媒质中电磁波传播的传导性效应 ,并得到了菲涅耳公式的修正式     

水热合成单分散碳球的制备与表征

以葡萄糖为原料水热法合成粒径均一单分散碳球,研究反应时间、反应温度、葡萄糖浓度、pH值、甲醛用量对碳球形貌及粒径的影响,采用SEM、FTIR、XRD对碳球的形貌和结构进行表征。结果表明,单分散碳球的最佳制备工艺为:反应温度160℃、反应时间6h、葡萄糖浓度0.25mol/L、体系pH值为8、甲醛用量2g;所制碳微球粒径约为350nm,分散系数为0.011,产率约为20%;制备出的碳球表面含有—OH、—CO、COOH官能团,碳球中含有无定形炭。     

Reduced K-best sphere decoding algorithm based on minimum route distance and noise variance

This paper focuses on reducing the complexity of K-best sphere decoding （SD） algorithm for the detection of uncoded multi-ple input multiple output （MIMO） systems. The proposed algorithm utilizes the threshold-pruning method to cut nodes with partial Euclidean distances （PEDs） larger than the threshold. Both the known noise value and the unknown noise value are considered to generate the threshold, which is the sum of the two values. The known noise value is the smal est PED of signals in the detected layers. The unknown noise value is generated by the noise power, the quality of service （QoS） and the signal-to-noise ratio （SNR） bound. Simulation results show that by considering both two noise values, the proposed algorithm makes an efficient reduction while the performance drops little.     

部分偏振光相干叠加的庞加莱球表示

用琼斯矢量表示偏振光，计算了两部分偏振光和干叠加后的琼斯矢量，并通过引入偏振度参量，分析了部分偏振光相干叠加后的庞加莱球表示。     

窄能隙导电高分子设计、合成新进展

详细介绍国内外在一类新型导电高分子材料 (CPs)—窄能隙导电高分子材料主要研究成果 ,这一领域正成为掺杂导电材料的有力挑战 ,为有机金属的研究提供了理论依据和新的发展方向     

钠沸石/银离子玻璃NO2气敏传感器的性能

报道一种新型固态电解质NO2气敏传感器，它以人工钠沸石材料为气敏固态电解质，新型银离子玻璃为气敏辅助性材料，溅射金膜为工作电极，埋藏于银离子玻璃中的银球为参比电极，构成电位型气敏传感器，可在线检测来自工业废气和汽车尾气等污染源的NO2。     

非均匀内热源组合球壁稳态导热微分方程组的解

用热流分流和叠加，直接得出非均匀内热源组合球壁稳态导热微分方程组，分别在第一类、第二类和第三类边界条件下的解。