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Wuhan University Journal of Natural sciences 2006年第6期11卷 1911-1914页

作者： XIE Yumin MING Yang SHI Feng MUHAMMAD Kamran Department of Computer Science and Engineering Beijing Institute of Technology Beijing 100081 China State Key Laboratory of Integrated service Networks Xidian University Xi＇an 710071 Shaanxi China

Coin flipping by telephone protocol（CFP） is utilized in a system to exchange a binary sequence at random between two person apart far from each other. However, CFP cannot he used in a system with many users like in a group environment system. A transmutation of CFP named T-CFP is proposed in this paper. The precondition of T-CFP is the system＇s user trusts the system center and center＇s cheating is meaningless at the same time. The significant difference between CFP and T-CFP is that CFP supports only two users while T-CFP can support many users to exchange special information. The security and efficiency of T-CFP are discussed with a detailed example on T-CFP utilization is demonstrated in this paper.

关键词： coin flipping protocol transmutation-coin flipping protocol one way function Blum

电子科大长三角研究院(衢州)·生活中心,衢州,浙江,中国

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世界建筑 2024年第4期 100-101页

作者： Tongji Architectural Design (Group) Co., Ltd. time & Space Architecture Studio 同济大学建筑设计研究院(集团)有限公司四时方院

项目选址于衢州高铁新城,因场地局限导致户外体育设施不足,周边尚未形成成熟的商业服务配套,在很长一段时间内将是一个“自给自足”的状态。400余名在校生均为研究生,主要进行科研与教学活动,学习时间相对灵活,对非正式学习空间需求量... 详细信息

项目选址于衢州高铁新城,因场地局限导致户外体育设施不足,周边尚未形成成熟的商业服务配套,在很长一段时间内将是一个“自给自足”的状态。400余名在校生均为研究生,主要进行科研与教学活动,学习时间相对灵活,对非正式学习空间需求量较大。因此,生活中心将承载全校师生的住宿、社交、运动、餐饮、购物、学习和娱乐等多种功能。我们在设计中引入“建筑漫步”的概念,试图在复合化、多元化的背景下探讨校园建筑设计的新思路。

关键词：服务配套户外体育项目选址电子科大长三角科研与教学研究生复合化

钙黄绿素标记刺参的效果及其对刺参抗氧化酶活力的影响

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水产学报 2011年第3期35卷 372-378页

作者：赵鹏杨红生王晓宇林承刚李湘萍中国科学院海洋研究所海洋生态与环境重点实验室国家海洋信息中心

使用钙黄绿素标记刺参稚参,在Nikon 80i荧光显微镜波长450～490 nm激发光下观察其对刺参骨片的标记情况;研究了钙黄绿素浓度和染色时间对刺参抗氧化酶SOD、CAT、GSH-Px活力的影响。结果表明:钙黄绿素能够标记刺参体壁、触手、管足、疣... 详细信息

使用钙黄绿素标记刺参稚参,在Nikon 80i荧光显微镜波长450～490 nm激发光下观察其对刺参骨片的标记情况;研究了钙黄绿素浓度和染色时间对刺参抗氧化酶SOD、CAT、GSH-Px活力的影响。结果表明:钙黄绿素能够标记刺参体壁、触手、管足、疣足真皮表层的骨片。实验中,钙黄绿素浓度对SOD和GSH-Px的活力无显著影响,浓度在1.000 mg/L时明显抑制CAT活力。染色时间对3种抗氧化酶活力有显著影响。染色时间×浓度交互作用对SOD和CAT活力有显著影响。钙黄绿素浓度在750 mg/L,染色时间在24 h左右,对3种抗氧化酶的影响较小。

关键词：刺参荧光标记抗氧化酶钙黄绿素

Research on the Monitoring System of CNC Grinding Process Based on Acoustic Emission

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武汉理工大学学报 2006年第S1期28卷 310-313页

作者： HU Zhongxiang1.TENG Jiaxu1.YANG Junwei1.HUO Xiaojing2,SHI Xiaojun1.(1.National Key Laboratory for Remanufacturing,Beijing 1.0072,china 2.M&E Engineering College of Hebei Agricultural University,Baoding 071.01.china) National Key Laboratory for Remanufacturing Beijing 100072China M&EEngineering College of Hebei Agricultural University Baoding 071001China

Using on-line monitoring during the CNC grinding process,the hazard case such as the crushing of grinding wheel and various safety accidents could be avoided,and the optimum time for dressing and replacing grinding wheel could also be determined,and hence,the {1. life of the grinding wheel could be prolonged and grinding quality could be improved. To overcome the limitation of some traditional techniques in which some parameters including the grinding power and force,torque and so on were monitored,the acoustic emission (AE) technique,which provides high sensitivity and responding speed,were developed in the present paper. The mechanism of AE during grinding was reviewed. Moreover,a virtual AE monitoring system,which could monitor the grinding state under different working conditions during the grinding,has been developed based on the Virtual Instruments technique. Some experiments were also performed on the internal grinder. The results showed that the AE signals became stronger with increasing the main shaft speed and grinding depth or decreasing the distance between the AE sensor and grinding area.

关键词： on-line monitoring virtual instruments CNC grinding acoustic emission

Role of surface evaporation in surface rainfall processes

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Role of surface evaporation in surface rainfall processes

第七届全国优秀青年气象科技工作者学术研讨会

作者： Xiaopeng Cui1.and Xiaofan Li21.aboratory of Cloud-Precipitation Physics and Severe Storms, Institute of Atmospheric Physics, chinese academy of sciences, Beijing,{1.. 2Joint center for Satellite Data Assimilation and National Oceanic and Atmospheric Administration/National Environmental Satellite, Data, and Information service center for Satellite Applications and Research, Camp Springs, Maryland, USA.

The roles of surface evaporation in tropical surface rainfall processes in rainfall regions （raining stratiform and convective regions） and rainfall-free regions （nonraining stratiform and clear-sky regions） are investigated on the basis of the data from a series of two-dimensional cloud-resolving simulations. The model is integrated for 21.days with imposed zonally uniform vertical velocity, zonal wind, horizontal temperature, and vapor advection, as well as sea surface temperature from the Tropical Ocean-Global Atmosphere Coupled Ocean-Atmosphere Response Experiment （TOGA COARE）. The model is also integrated to equilibrium states for 40 days with imposed zero vertical velocity, constant zonal wind, and sea surface temperatures of 31.C and 29°C for two separate experiments. The time- and zonal-mean surface evaporation mainly comes from rainfall-free regions, where the surface evaporation is largely balanced by the vapor divergence associated with the subsidence. In rainfall regions the vapor convergence determines the convective rainfall while the surface evaporation plays a negligible role. Thus surface evaporation pumps water vapor into rainfall-free regions, and the divergence transports the vapor from rainfall-free regions to rainfall regions, which supports the rainfall. Imposed forcing and sea surface temperature do not change the role of surface evaporation in rainfall processes.

关键词：

来源： cnki会议评论

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基于北斗/GNSS精密时频量值传递综述

宇航计测技术 2012年第1期32卷 41-44页

作者：顾胜陈洪卿曾亮北京航天飞行控制中心北京100094 中国科学院国家授时中心西安710600

介绍了北斗/GNSS精密时间频率量值传递技术及其应用研究进展,通过对北斗共视比对技术的研究,设计出利用北斗共视与国家授时中心GNSS CV精密时间服务系统进行比对,从而实现用户与标准时间UTC的溯源完成基于GNSS CV技术的时间频率计量服... 详细信息

介绍了北斗/GNSS精密时间频率量值传递技术及其应用研究进展,通过对北斗共视比对技术的研究,设计出利用北斗共视与国家授时中心GNSS CV精密时间服务系统进行比对,从而实现用户与标准时间UTC的溯源完成基于GNSS CV技术的时间频率计量服务系统设计,创新性地提出提高北斗共视比对技术以及研制多模多频GNSS CV量值传递设备的研究方向。

关键词：北斗共视法时频传递 GNSS CV精密时间服务系统标准时间

用lageos1.lageos2激光测距资料联合解地球定向参数

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天文学报 2003年第2期44卷 189-196页

作者：冯初刚朱元兰张飞鹏中国科学院上海天文台上海200030 中国科学院国家天文台北京100012 中国科学院天文地球动力学研究中心

为了响应国际地球自转服务中心(IERS)和国际激光测距服务中心(ILRS)的呼吁,上海天文台天文地球动力学研究中心参加了对激光测距卫星lageos1.lageos2的资料的分析、计算,提交了关于地球定向参数(EOP)(1.98-2001.的联合(lageos1.lageos2... 详细信息

为了响应国际地球自转服务中心(IERS)和国际激光测距服务中心(ILRS)的呼吁,上海天文台天文地球动力学研究中心参加了对激光测距卫星lageos1.lageos2的资料的分析、计算,提交了关于地球定向参数(EOP)(1.98-2001.的联合(lageos1.lageos2)解算结果报告:(SHAO)2002 L 01.利用更精细化的和改正了的计算EOP的模型,获得了EOP(SHAO)2002 L 01.列。该系列与同时期的IERS的EOP(IERS)C04相比,符合程度:极移X_p、Y_p好于0.35mas,日长变化D_u好于0.030ms。

关键词：激光测距地球定向参数卫星动力学地球自转

Development of vibration style ladle slag detection methods and the key technologies

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Science china(Technological {1.) 2010年第11期53卷 2378-2387页

作者： TAN DaPeng1.2,JI ShiMing1.LI PeiYu2 & PAN XiaoHong2 1.Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology,Ministry of Education,Zhejiang University of Technology,Hangzhou 31.01.,china 2 Department of Mechanical Engineering,Zhejiang University,Hangzhou 31.027,china 1. Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology Ministry of Education Zhejiang University of Technology Hangzhou 310014 China2. Department of Mechanical Engineering Zhejiang University Hangzhou 310027 China

Ladle slag carry-over detection technology (SCDT) is of important practical significance to steel continuous casting production (CCP),which can effectively improve the casting blank quality,increase molten steel yield ratio,and protract the service life of *** current SCDT realization methods and their application circumstance were summarized,and their main problems during the course of factual production were pointed *** difficult technical points of detection principle,digital signal processing for vibration style SCDT development were *** aim at the problems of vibration style SCDT,such as low recognition stability and long applied adjustment {1.,its key technologies including water model experimental platform establishment,two-phase sink vortex entrapment mechanism,forced vibration response of shroud nozzle and steel stream shock vibration signal processing optimization were analyzed deeply,and the corresponding research route and advices were given.

关键词： ladle slag carry-over sink vortex slag entrapment shock vibration

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Research on Pervasive Knowledge service Field

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Research on Pervasive Knowledge Service Field