丁基橡胶再生胶硫化体系的选择及其对硫化性能的影响

采用超临界CO2流体作传输介质,二苯基二硫(DD)作脱硫剂,研究了废旧丁基橡胶的脱硫再生。结果表明,所得丁基橡胶再生胶(RIIR)不能被硫黄硫化,但能被树脂硫化。在丁基橡胶(IIR)的硫黄硫化过程中,DD不能用作硫化剂和硫化促进剂,其对硫化过程有明显的抑制作用。采用丙酮抽出残留DD后,RIIR可被硫黄硫化。针对IIR/RIIR并用体系,分别以硫黄和树脂作硫化体系且用量相同时,树脂硫化体系的交联密度明显高于硫黄硫化体系。     

与智慧城市相接轨的建筑运营管理平台

重新修编的《智能建筑设计标准》将重新定义“智能化集成系统”,中国建筑设计院有限公司（原中国建筑设计研究院）经过深入研究和实践,建立了一套完整、可实现的智能化信息系统集成技术---建筑运营管理平台。该技术将为新型城镇化和智慧城市建设提供基础信息源,通过各类神经元的感知、分类、传输到大数据库中,为城市运行的云计算和物联网提供社会基层数据。     

一种基于YHFT-Matrix DSP的去块效应滤波算法的向量化实现

针对H.264视频压缩编码标准中去块效应滤波器部分提出了一种基于YHFT Matrix DSP的并行设计及向量实现方法。重点对H.264协议中去块效应滤波器进行理论分析，并利用向量数据访问单元、向量处理单元、高效的混洗单元和灵活的矩阵对其进行并行算法设计。将去块滤波算法分别映射到YHFT Matrix和TI的TMS320C6415中，通过统计两者性能，表明YHFT Matrix的性能优于TMS320C6415。     

On the capacity of the state‐dependent interference relay channel

This paper considers the state‐dependent interference relay channel (SIRC) in which one of the two users may operate as a secondary user and the relay has a noncausal access to the signals from both users. For discrete memoryless SIRC, we first establish the achievable rate region by carefully merging Han‐Kobayashi rate splitting encoding technique, superposition encoding, and Gelfand‐Pinsker encoding technique. Then, based on the achievable rate region that we derive, the capacity of the SIRC is established in many different scenarios including (a) the weak interference regime, (b) the strong interference regime, and (c) the very strong interference regime. This means that our capacity results contain all available known results in the literature. Next, the achievable rate region and the associated capacity results are also evaluated in the case of additive Gaussian noise. Additionally, many numerical examples are investigated to show the value of our theoretical derivations.     

金沙江水电工程智能建造技术体系研究与实践

运用"全面感知、真实分析、实时控制"的智能闭环控制理论,提出了以工程建设资源要素动态精准管理、业务流程数字化管理、工艺过程智能控制、实物成本精确分析、结构安全与进度耦合分析及联动调控的数字化技术和智能化技术为核心,以水电工程数据模型如大坝全景信息模型DIM为基础,以智能建造管理平台iDam为主体的智能建造技术体系,并对工程数据结构分解与编码体系、工程数据感知传输共享技术、iDam平台的系统架构与业务架构、智能建造工程绩效等关键技术进行了分析。通过统一规范的工程数据结构与编码体系,iDam平台可集成工程建设全过程的基础数据、环境数据、过程数据和监测数据,为各业务模块服务;建立的基于工程技术和管理大数据的机理分析功能,可为工程建设的业主、施工、监理、设计、科研及运行等单位服务。智能建造初步实践表明,本文构建的技术体系是科学可行的,对基础设施智能建造技术与管理体系的研究与实践具有参考价值。     

Capacity Region of a Class of Gaussian Cognitive Degraded Broadcast Channel

This paper studies the cognitive broadcast channel in which the primary user com- municates to the primary receiver, while the secondary user has noncausal knowledge of the primary radio＇s codeword and expects to communicate to two secondary receivers. Comparing with the existing cognitive radio channel which considers only one secondary receiver, cognitive broadcast channel studies the case that there are multiple secondary receivers. To this end, we investigate the fundamental limits of the performance of the Gaussian cognitive broadcast channel from the information theoretic perspective. Specifically, we derive the capacity region of the Gaussian cognitive degraded broadcast channel with weak interference.     

Electron Microscope Studies on the Forn1ation of Silver Filaments from Silver Iodide Crystals

The growth of filamentary silver from microcrystals of silver iodide has been examined in the electron microscope. It was found that filamentary growth was restricted to certain types of crystals namely those containing twin planes. After growth the filaments exhibited contrast bands which appeared to be connected with prismatic slip. A mechanism is put forward, based on twinning dislocations, to explain the mode of generation of filaments.     

一种洗碗机溢水保护系统的设计

洗碗机溢水一般是指洗碗机进水过多,水溢出内胆底部而流到洗碗机底部钢板上。当溢出的水量超过底部钢板设定的蓄水容量时,洗碗机应发出报警信号及时切断进水,防止因进水过多而引起的事故。如果洗碗机溢水不能被检测和控制,由于洗碗机底部钢板盛水量有限,洗碗机溢出的水会从底部钢板流到地面上,会对地板、厨房甚至房屋造成极大的安全威胁,因此洗碗机具有安全可靠的溢水保护系统至关重要。