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Search Results: 1 - 10 of 330328 matches for " 王勇 "
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撤稿:ZARA快时尚模式在中国的发展问题研究
RETRACTED:The Study of Fast Fashion Model of ZARA and Diagnostic of Its Dilemma in China
 [PDF]

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Emergence and Transfer of Wealth (ETW) , 2015, DOI: 10.12677/ETW.2015.54006
Abstract: 撤稿声明:ZARA快时尚模式在中国的发展问题研究”一文刊登在201512月出版的《财富涌现与流转2015年第5卷第4期第37-44上。因作者申请文章数据统计出现偏差,存在推导错误,暂不适合发表。根据国际出版流程,编委会现决定撤除此稿件王斐,吴勇.ZARA快时尚模式在中国的发展问题研究[J].
一种电力SCADA通信链路DoS攻击程度的评估方法
An Assessment Method for Degree of DoS Attack against SCADA Communication Links in Power System
 [PDF]

, 旭蕊
Smart Grid (SG) , 2012, DOI: 10.12677/SG.2012.24019
Abstract: 文中介绍了SCADA通信系统DoS攻击模型,根据链路保护措施实施程度利用贝叶斯网络计算攻击者能够成功完成DoS攻击的概率。目的是利用该方法,通过对实际链路的计算,并对链路安全性做详细分析,可以帮助决策者更加直观的了解每个SCADA通信系统DoS攻击成功的概率,以及防御措施采取与否对DoS攻击成功的影响大小。最终使得决策者找到最有效的安全措施实现对通信链路的合理优化。
This paper describes a DoS attack model of SCADA communication system, and calculates the probability of success DoS attack based on Bayesian network. After the calculation and analyze of actual link, decision maker can assess the probability of DoS success attack against the SCADA communication system, as well as counter measures against the attacks. Ultimately, decision maker can fide a most effective counter measure to optimize the communication link.
数字阵列雷达工程实现技术难点分析
The Technology Problems in the Engineering of Digital Array Radar
 [PDF]

李晓俊,
Instrumentation and Equipments (IaE) , 2015, DOI: 10.12677/IaE.2015.34021
Abstract: 数字阵列雷达是一种接收和发射波束都采用数字波束形成技术的全数字阵列扫描雷达,是有源相控阵雷达和数字雷达的最新发展方向。本文从数字阵列雷达的基本组成入手,首先分析了数字阵列雷达动态范围低要求、超低副瓣、低截获概率、宽角度扫描等主要特点,最后讨论了工程实现过程中存在的诸如数字TR组件、宽带信号、超低副瓣和通道一致性等技术难点,为数字阵列雷达的深入发展指明了方向。
Digital Array Radar (DAR) is a fully digitized phased array radar in which digital beam forming technique is used both in receiving and transmitting. Firstly, this paper introduced the typical ar-chitecture of DAR. Then, it analyzed the characteristics of DAR, such as the low demand of dynamic range, the ultra low side-lobe, the low probability of Intercept and the broad field of regard. Finally, it discussed the technology problems in the process of engineering realization, including the digital TR Module production, the broadband realization, the ultra low side-lobe and the channel consistency technique. It will be helpful for the fully development of DAR.
需求具有价格敏感性的供应链的利益共享合约
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中国管理科学 , 2005,
Abstract: ?利益共享合约是促使供应链协作的一种重要手段。本文建立了具有价格敏感性的最终消费需求的利益共享合约模型。在考虑最终销售价格为内生变量的条件下,借助于报童模型,分别分析在此合约下销售商和供应商的决策行为,并给出销售商的最优决策的计算公式以及该合约参数Φ的取值范围。最后给出实例分析,验证在利益共享合约下的供应链能达到协作状态。
Performance analysis of atmospheric laser communication system basing on asymmetrically clipped optical OFDM intensity modulation
大气激光通信非对称限幅光正交频分复用技术研究


光子学报 , 2011,
Abstract: The asymmetrically clipped optical orthogonal frequency division multiplexing(OFDM) is a optical power efficient modulation technique. It is a new technique for using OFDM in optical system. Asymmetrically clipped OFDM is derived from a bipolar OFDM waveform by setting the negative values to zero. The asymmetrically clipped OFDM technique is applied to atmospheric communication system in this paper, and we analyze the performance of atmospheric communication system using asymmetrically clipped OFDM technique through atmospheric turbulence channels. On this basis, asymmetrically clipped optical OFDM modulation is compared against on/off keying (OOK) modulation and DC optical OFDM modulation in the atmospheric turbulence channel ,and it is simulated in the atmospheric turbulence channel. The simulation results show that the above scheme can satisfy the need of atmospheric laser communication system.
网络交换技术与Switching hub

计算机系统应用 , 1997,
Abstract: 本文论述了网络技术中典型的以太网技术的发展过程,并就当前大家关心的网络交换技术的应用环境以及从不同的角度对交换器的分类作了论述。
Eight Core J2EE Patterns in Struts
Struts中的8种J2EE核心模式


计算机系统应用 , 2007,
Abstract: 本文首先介绍了Struts的基本概念,然后用J2EE核心模式的理念分析了Struts框架中的8种核心模式,最后说明了模式之间的关系.
试析特许经营及其反垄断问题——与国际接轨的又一新兴通道

法学家 , 2002,
Abstract:
煤巷锚杆支护巷道稳定性的相似模拟实验研究

煤炭工程 , 2011,
Abstract: 锚杆支护是我国煤巷的主要支护方式。目前,关于锚杆支护参数的选择及设计上存在多种方法,针对实际工程背景,在确定支护参数的前提条件下采用相似模拟实验对回采过程中巷道锚杆支设的稳定性展开研究,研究主要针对矿井采用的双巷布置情况,其研究结论对类似矿井具有一定的参考价值。
新集矿区瓦斯灾害防治浅析

煤炭工程 , 2010,
Abstract: 结合新集矿区实践,对在瓦斯大、地压高、煤层透气性低的复杂地质下矿井瓦斯防治进行了分析和探讨。对顺层钻孔、顶板走向孔、顶板高位巷道、顶(底)板穿层孔、采空区埋管抽采等几种瓦斯抽采技术进行了分析。
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