Results 41 to 50 of about 4,650 (163)

Design principle and application of double-edge-triggered shift register(双边沿移位寄存器的设计原理及其应用)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2004
从消除时钟信号冗余跳变而致的无效功耗的要求出发,提出双边沿移位寄存器的设计思想.该移位寄存器的功能已用PSPICE程序模拟验证.使用该移位寄存器设计双边沿移位计数器的实例被演示.对模拟所得数据的计算结果表明,与实现相同功能的单边沿移位寄存器相比,由于工作频率减半,双边沿移位寄存器的功耗有明显降低.
ZHUTing(朱挺), WUXun-wei(吴训威)
doaj   +1 more source

Investigation of data acquisition, storage and transmission of optical fiber perimeter sensor in network [PDF]

open access: yes, 2016
伴随光纤及光纤通信技术的飞速发展,光纤周界传感技术也快速发展。光纤周界传感由于具有抗电磁干扰、灵敏度高、易部署,低成本、本质安全、便于组成传感网络等诸多优点,使得光纤周界传感器在安防、水利电力、公路、船舶、油气管道泄漏监测、光缆监测等领域被广泛应用。 本文主要研究光纤周界传感系统数据采集、存储与网络化传输的具体实现,该方案基于现有实验室光纤周界传感系统,采用CISCOVPN路由器、BUFFALONAS网络存储器、基于BCM2836处理器的嵌入式采集模块构成的网络化的数据采集、存储、传输的系统 ...
黄金棋
core  

Interfacial Electronic Interactions in Hierarchical Heterostructure Electrocatalyst for Energy‐Saving Hydrogen Production at Industrial Current Densities

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Developing low‐energy‐input electrocatalytic systems for efficient hydrogen production is crucial for advancing sustainable energy technologies. The overall hydrazine splitting (OHzS) has emerged as a promising strategy to reduce the overall energy consumption by replacing the sluggish oxygen evolution reaction.
Haozhou Chen   +13 more
wiley   +1 more source

Analysis and Design of Network Public Opinion Monitoring System Based on Cloud Platform [PDF]

open access: yes, 2014
随着移动互联网技术的发展,网络传播也随之兴起,以往在传统新闻媒介上无法实现的个人表达自由的言论得到空前的发展,而这种言论往往具有突发性、非理性等特点,因此对网络舆情监测系统及相关技术进行研究设计具有很好的实际意义。 网络舆情监测需要对网络舆情进行采集、分析、提取并保存,以供查询、展示及预测等,数据抓取、数据解析、云存储是其中的三个关键技术。为了有效进行网络舆情监测,本文对以上三方面的关键技术展开研究,主要创新内容包括: 1.设计网络信息获取过程中的各种关键算法,包括:分布式bloom过滤器设计 ...
张永光
core  

Coral‐Like Yolk–Shell‐Structured CoNi@Void@C Microspheres for Enhanced Microwave Absorption, Photothermal, Anti‐Corrosion, and Radiation Shielding Properties

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Considering the multiple challenges faced by stealth coatings in complex service environments, the development of multifunctional integrated microwave absorbing materials (MAMs) that combine efficient electromagnetic (EM) attenuation with environmental tolerance has become an urgent need. In this work, coral‐like CoNi@Void@C microparticle (MP)
Jiale Wu   +8 more
wiley   +1 more source

Analysis and Design of parking lot management system [PDF]

open access: yes, 2015
面对城市停车所面临的诸多限制条件,停车场这块静态交通的智能管理和有效利用变得尤为重要,停车难影响正常的城市交通通畅,降低道路的运行效率,增加交通管理难度,继而影响城市的经济活力,已经成为一个瓶颈制约着城市的发展。所以高效,智能,安全,低功耗的智能停车场系统是智能交通成立的前提条件,也成为城市进步不可缺少的重要力量。 本文针对上述实际问题,通过对停车场出入口识别、停车诱导及反向寻车、停车场智能照明的分析与设计,以实现车辆以最短的时间、最优的停车诱导路线进行快捷停放 ...
朱生蛟
core  

Design of an MAC protocol for distributed wireless network with low power consumption [PDF]

open access: yes, 2017
为了提高分布式全双工无线网络的能量效率,提出了一种改进的低功耗全双工媒体访问控制(MAC)协议.不同于传统的MAC协议,该MAC协议通过降低数据包以及确认包的传输功率来实现能量有效性.提出的MAC协议支持双向以及单向两种链路,并保持对传统半双工节点具有向后兼容性,实现了较高的吞吐量.通过基于随机几何的方法对提出的MAC协议进行了仿真分析与性能评估,结果证明了其有效性和准确性,是全双工无线网络可行的一种解决方案.In order to improve the energy efficiency of ...
沈来信, 邓文雯, 郎杨, 马静
core   +1 more source

Template Engineering of Magnetic Nanoparticles Decorated on Porous Carbon for High‐Performance Multiband Electromagnetic Wave Absorption

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Although magnetic carbon materials possess significant potential in the field of electromagnetic wave absorption (EWA) due to the synergistic effect of multiple attenuation mechanisms, the currently reported magnetic carbon EWA materials face some challenges, such as high cost, low yield, and easy agglomeration of the magnetic component ...
Bo Jiang   +9 more
wiley   +1 more source

Key Technologies And Application Research Of Control And Real-time Monitoring Tasks In Smart Home Web Of Things [PDF]

open access: yes, 2016
随着移动互联、云计算等技术的发展以及人们生活水平的提高,近年来智能家居市场获得长足发展,出现了大批新型产品,越来越多的用户通过智能设备无线接入互联网,实现内容的获取及相互之间的交互,一定程度上满足了大家的需求,但还普遍存在实时特性差、对于Web支持有限、大量使用私有协议或底层协议、标准兼容性低、设备互联互通困难的问题。 本课题针对智能家居中的两类典型应用场景,将Web协议和架构引入物联网领域,构建出具有开放性和松耦合特性的智能家居物维网(WebofThings,WoT)应用架构,研究工作取得以下创新点:
张帆
core  

Abundant top predators increase species interaction network complexity in northeastern Chinese forests

open access: yesJournal of Animal Ecology, Volume 94, Issue 4, Page 745-759, April 2025.
Our study reveals how top predators influence mammalian interaction networks by increasing complexity and redistributing interactions through indirect effects. These findings imply the important role of top predators in structuring communities, offering novel insights into the conservation and management of mammal communities in northeastern China ...
Wen She   +5 more
wiley   +1 more source

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