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Standard映射及其三维扩展在多媒体加密中的应用 被引量:5
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作者 廉士国 王执铨 《东南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2003年第z1期90-94,共5页
混沌映射因为初值敏感性、参数敏感性、遍历性和类随机性的特点 ,很适合用于信息加密 .离散化后的混沌映射与扩散机构相结合 ,与传统的密码算法相比 ,加解密速度更快 ,能够满足实时性要求 .与Baker和Cat映射相比 ,Standard映射具有更大... 混沌映射因为初值敏感性、参数敏感性、遍历性和类随机性的特点 ,很适合用于信息加密 .离散化后的混沌映射与扩散机构相结合 ,与传统的密码算法相比 ,加解密速度更快 ,能够满足实时性要求 .与Baker和Cat映射相比 ,Standard映射具有更大的密钥空间 ,更适合于信息加密 .因此将其扩展到三维空间 ,构造了基于离散Standard映射的多媒体加密方案 ,分析了Standard映射的参数敏感性 ,给出了置乱循环次数和扩散函数的选择方法 .实验结果表明 ,算法具有较高的安全性和较快的加解密速度 ,适合于多媒体数据 ,如图像、视频。 展开更多
关键词 混沌加密 standard映射 多媒体加密 密码
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生态纺织品标准与Oeko-Tex^(®) Standard 100对比 被引量:2
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作者 韩莹莹 赵海浪 刘宇 《针织工业》 北大核心 2022年第4期76-80,共5页
将GB/T 18885—2020《生态纺织品技术要求》与2021版Oeko-Tex^(®)Standard 100标准进行详细比较,主要针对pH值、甲醛含量、可萃取重金属及重金属总含量、杀虫剂、有害染料、邻苯二甲酸酯、有机锡化合物、氯化苯和氯化甲苯、含氯苯... 将GB/T 18885—2020《生态纺织品技术要求》与2021版Oeko-Tex^(®)Standard 100标准进行详细比较,主要针对pH值、甲醛含量、可萃取重金属及重金属总含量、杀虫剂、有害染料、邻苯二甲酸酯、有机锡化合物、氯化苯和氯化甲苯、含氯苯酚、多环芳烃、全氟及多氟化合物、化学残余(残余溶剂、残余表面活性剂、残余润湿剂及其他)、抗菌整理剂和阻燃整理剂、紫外线稳定剂、硅氧烷、亚硝胺和亚硝基物质、可挥发物释放量、色牢度、有机棉纤维和材料19个测试项目。为纺织行业相关人员提供标准对比解读,并为今后GB/T 18885的修订提供一定的参考。 展开更多
关键词 生态纺织品 Oeko-Tex^(®)standard 100 标准对比
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Windows Mobile Standard中文输入法设计实现
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作者 朱晓旭 钱培德 《计算机工程与应用》 CSCD 北大核心 2010年第5期63-65,共3页
Windows Mobile Standard是主流的手机操作系统之一,但其中的汉字输入法少,用户选择余地小。首先比较了Windows Mobile Standard中文输入法与桌面Windows中文输入法的异同,分析了Windows Mobile Standard的输入接口,然后讲解了设计并实... Windows Mobile Standard是主流的手机操作系统之一,但其中的汉字输入法少,用户选择余地小。首先比较了Windows Mobile Standard中文输入法与桌面Windows中文输入法的异同,分析了Windows Mobile Standard的输入接口,然后讲解了设计并实现一个Windows Mobile Standard纵横码中文输入法的过程,描述了其中的一些关键问题。纵横码汉字输入法的开发对于各种输入法向手持设备上移植具有借鉴意义。 展开更多
关键词 智能手机 Windows MOBILE standard 中文输入法 码本
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China’s Labor Standard Legislation: Confused Reality and Unclear Future
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作者 Liu Dawei 《学术界》 CSSCI 北大核心 2020年第6期210-217,共8页
The reasons why labor standards law has not been enacted so far include the unreadiness of entrepreneurs and enterprises as well as legislators and the market. It is a great challenge for legislators because they need... The reasons why labor standards law has not been enacted so far include the unreadiness of entrepreneurs and enterprises as well as legislators and the market. It is a great challenge for legislators because they need to focus on the coordination of relationship between central and local labor standards legislation,on special problems of sectors or industries,on coordination of special industries and general industries. in addition to many other historical factors. The introduction of labor standards legislation must be based on a good familiarity of current situation and international labor standards,the frequent points of labor disputes in China,and the specific characteristics of different regions and industries,which is also the mission and responsibility of the legislators. 展开更多
关键词 labor laws basic labor standards labor standards law labor legislation
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Multi-mode process monitoring based on a novel weighted local standardization strategy and support vector data description 被引量:9
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作者 赵付洲 宋冰 侍洪波 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第11期2896-2905,共10页
There are multiple operating modes in the real industrial process, and the collected data follow the complex multimodal distribution, so most traditional process monitoring methods are no longer applicable because the... There are multiple operating modes in the real industrial process, and the collected data follow the complex multimodal distribution, so most traditional process monitoring methods are no longer applicable because their presumptions are that sampled-data should obey the single Gaussian distribution or non-Gaussian distribution. In order to solve these problems, a novel weighted local standardization(WLS) strategy is proposed to standardize the multimodal data, which can eliminate the multi-mode characteristics of the collected data, and normalize them into unimodal data distribution. After detailed analysis of the raised data preprocessing strategy, a new algorithm using WLS strategy with support vector data description(SVDD) is put forward to apply for multi-mode monitoring process. Unlike the strategy of building multiple local models, the developed method only contains a model without the prior knowledge of multi-mode process. To demonstrate the proposed method's validity, it is applied to a numerical example and a Tennessee Eastman(TE) process. Finally, the simulation results show that the WLS strategy is very effective to standardize multimodal data, and the WLS-SVDD monitoring method has great advantages over the traditional SVDD and PCA combined with a local standardization strategy(LNS-PCA) in multi-mode process monitoring. 展开更多
关键词 multiple operating modes weighted local standardization support vector data description multi-mode monitoring
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海南霸王岭山地雨林理想结构的指标与标准(standards)探讨 被引量:4
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作者 黄清麟 洪菊生 +1 位作者 陈永富 王晓慧 《林业科学研究》 CSCD 北大核心 2003年第4期404-410,共7页
根据典型林分结构的分析,结合海南霸王岭原始热带山地雨林林隙特征,以"近自然林业"理论为指导,提出海南霸王岭山地雨林理想结构的指标与标准(standards),包括林层结构、乔木层物种多样性、林分基本蓄积量、材积按径阶分布、... 根据典型林分结构的分析,结合海南霸王岭原始热带山地雨林林隙特征,以"近自然林业"理论为指导,提出海南霸王岭山地雨林理想结构的指标与标准(standards),包括林层结构、乔木层物种多样性、林分基本蓄积量、材积按径阶分布、林分密度、株数按径阶分布、特类~三类商品材树种结构等7个指标和各指标的具体标准(standards),旨在为海南霸王岭山地雨林可持续经营提供基础依据,为异龄林理想结构的研究提供实例。 展开更多
关键词 海南霸王岭林区 山地雨林 理想结构 近自然林业 指标 标准 可持续经营
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2022年OEKO-TEX STANDARD 100最新变更内容解析 被引量:3
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作者 王亚萍 白子竹 韩军 《印染》 CAS 北大核心 2022年第5期77-81,共5页
对2022年OEKO-TEX协会发布最新版标准的变化进行详细解读。分别对STANDARD 100 by OEKO-TEX、LEATHER STANDARD by OEKO-TEX、STeP by OEKO-TEX、MADE IN GREEN by OEKO-TEX、ECO PASSPORT by OEKO-TEX五大体系新增与变更内容进行分析... 对2022年OEKO-TEX协会发布最新版标准的变化进行详细解读。分别对STANDARD 100 by OEKO-TEX、LEATHER STANDARD by OEKO-TEX、STeP by OEKO-TEX、MADE IN GREEN by OEKO-TEX、ECO PASSPORT by OEKO-TEX五大体系新增与变更内容进行分析、总结。分别对新增限量物质和受监控物质的基本信息、限量要求、监控原因、化学危险性及主要用途进行说明。对新标准的变更内容进行补充说明,方便使用者更深入理解标准内容。 展开更多
关键词 标准 新增 限量物质 受监测物质 Oeko-Tex standard 100
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关于建立标准人(Standard Person简写SP)体系的假设 被引量:5
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作者 李松柏 《西北人口》 2004年第3期13-14,共2页
人作为生物,也作为社会成员,他们具有不同的个体特征,但同时又具有共同之处,这些共同之处我们可以从人的身体素质、思想素质和科学文化素质等进行比较。标准人体系假设就是试图从这几个重要因素及其子因素对人的影响中确定一个标准人所... 人作为生物,也作为社会成员,他们具有不同的个体特征,但同时又具有共同之处,这些共同之处我们可以从人的身体素质、思想素质和科学文化素质等进行比较。标准人体系假设就是试图从这几个重要因素及其子因素对人的影响中确定一个标准人所拥有的条件,以及各因素对标准人的影响权重,也就是对人的条件进行量化,并提出本假设的目的,解决的问题和作者希望通过本假设对社会学、人口学、人类学、人口社会学等学科的研究提供一种新的视角。 展开更多
关键词 标准人 身体素质 思想素质 科学文化素质
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Application of Standardization for Initial Design of Plastic Injection Moulds
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作者 Low Maria Leng-Hwa LEE Kim-Seng 《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 2002年第S1期202-,共1页
Today, the time-to-market for plastic products ar e getting shorter, thus the lead-time for making the injection mould is decreasin g. There is potential in timesavings in the mould design stage because the design pro... Today, the time-to-market for plastic products ar e getting shorter, thus the lead-time for making the injection mould is decreasin g. There is potential in timesavings in the mould design stage because the design process that is repeatable for every mould design can be standardized. T he preliminary work of any final plastic injection mould design is to always pro vide an initial design of the mould assembly for product designers (customers) p rior to receiving the final product CAD data. Traditionally and even up till no w, this initial design is always created using 2D CAD packages. The information used for the initial design is based on the technical discussion checklist, in which most mould makers have their own standards. This checklist is also being used as a quotation since the most basic information of the mould in the particu lar project is being recorded in it. The basic information in this checklist in cludes the number of cavities, the type of mould base to be used, the moulding m achine to be used for the moulding, the type of gating system, the type of resin material used and its shrinkage value etc. Information on special requirements such as the number of sliders or lifters to be used is also listed in the check list. At this stage, there is still no information on the cooling and ejection design since they are greatly dependent on the final product CAD data. This res earch focuses on the methodology of providing the initial design in 3D solid bas ed on the technical discussion checklist, which takes the role of the overall st andard template since every sub-design has its own standard template. An examp le of a sub-design that has its own standard template is the cavity layout desi gn. The cavity layout for plastic injection moulds can be designed by controlli ng the geometrical parameters using a standardization template. The standardiza tion template for the cavity layout design consists of configurations for the po ssible layouts. Each configuration of the layout design has its own layout desi gn table of all the geometrical parameters. This standardization template is pr e-defined in the layout design level of the mould assembly design. This ensure s that the required configuration can be loaded into the mould assembly design v ery quickly without having the need to redesign the layout. This makes it usefu l for technical discussions between the product designers and mould designers pr ior to the manufacture of the mould. Changes can be made to the 3D cavity layou t design immediately during the discussions thus the savings in time and avo idance of miscommunications. 展开更多
关键词 standardization template plastic injection mould design initial design technical discussion checklist geometrical parameters
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Research on Decision Model of Control over Technology Standard Alliance
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作者 MA Dong HE Mingsheng 《Journal of Northeast Agricultural University(English Edition)》 CAS 2010年第4期97-102,共6页
Technology standard alliance, as vectors of research, development and circulation for technology standard, has already become an important transformation form from laboratory standard to fact standard for all countrie... Technology standard alliance, as vectors of research, development and circulation for technology standard, has already become an important transformation form from laboratory standard to fact standard for all countries. However, during the process of forming the technology standard alliance, it is a focus for members in the alliance to take control over others. How to construct a scientific and reasonable decision model of control over technology standard alliance is closely related to each enterprise member's interest. Under the condition that the risk is neutral, the paper explored necessary and sufficient conditions of knowledge sharing and the most endeavor among enterprise members through constructing a decision model of control over technology standard alliance, and put forward that the joint control model was the best decision model for constructing the technology standard alliance. 展开更多
关键词 technology standard ALLIANCE CONTROL joint control
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Construction of a General Standard Molecule for the Qualitative Detection in Different Transgenic Foodcrops
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作者 AO Jinxia GAO Xuejun +4 位作者 YU Yanbo QU Bo YUAN Xiaohan LIU Ying GUO Shicheng 《Journal of Northeast Agricultural University(English Edition)》 CAS 2009年第2期37-41,共5页
Now every laboratory is facing a common problem that is seriously lacking in the standard reference molecule in the GMC detecting research center. Constructing the recombinant plasmid is the urgent demand. In order to... Now every laboratory is facing a common problem that is seriously lacking in the standard reference molecule in the GMC detecting research center. Constructing the recombinant plasmid is the urgent demand. In order to overcome this problem, this study respectively cloned CrylA(B), BAR, CP4-EPSPS, PAT and RBCL genes into PMD 18-T vector. This constructed plasmid could be used as the standard reference molecule in the qualitative detecting of the exogenous CP4-EPSPS gene, CrylA(B) gene, BAR gene and PAT gene. Identification by double restriction endonuclease digestion and identification by PCR proved that the test result was positive. All of these indicated that the established reference molecules in this study were suitable for the qualitative analysis standard of this GMC detection. 展开更多
关键词 transgenic foodcrops qualitative analysis standard molecule
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Integrated Standardization and Systems Engineering Management
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作者 RUAN Jin-yuan 1, SUN Shu-tao 2, YU Xin-qi 3, RUAN Xin 4 (1. Ordance Institute of General Equipment Department, Shiji azhuang 050000, China 2. Graduate School of Chinese Academic of Science, Beijing 100042, China +1 位作者 3. East China University of Science and Technology, Shanghai 200232, China 4. Meterology Bureau of Hebei Province, Shijiazhuang 050021, China) 《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 2002年第S1期235-236,共2页
Integrated standardization is one of the fundamenta l forms of modern standardization. It is the combination of system science and the content of standardization. The development of system science has provided theo re... Integrated standardization is one of the fundamenta l forms of modern standardization. It is the combination of system science and the content of standardization. The development of system science has provided theo retic foundation and precondition for integrated standardization. The relevant r esearch on integrated standardization and system engineering illustrate that int egrated standardization is a advanced method which presented with the developmen t of modern science and technology . Integrated standardization treat the re levant factors of standardization as a system, and wholly standarlize the factor s in order to reach the best level of technology and quality. Integrated standardization is a large system engineering. In modern industr y the contact among different departments is being constantly enlarged and t he complexity of product is being constantly increased. This situation demands s trict correspond and united request in all the following aspects: raw mate rial, organs, fittings, technical measures of production, preparation for produc tion, ways of organizing the production. The traditional measure which establish the respective standard separately must be replaced by multi-spetialty standa rdization in large spectrum. The current situation and the development of syste m science has provided theoretic foundation and precondition for this kind of st andardization. Product or project can be managed with system engineering of proj ect, while the correspond standardization can be managed with system engineering of standardization. Integrated standardization virtually is system engineering of standardization, w hich use the theory to deal with the problem about standardization . This thesis included 3 chapters: 1. the brief summary of integrated standardization and sys tem engineering management in the development of type in foreign countries; 2. t he current situation and existing problems in the development of products; 3. ho w to organize and actualize integrated standardization and system engineering ma nagement in the development of products. 展开更多
关键词 integrated standardization system engineering ma nagement
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Oeko-Tex Standard 100与中国丝绸业
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作者 张莉 《丝绸》 CAS 北大核心 2002年第11期48-48,共1页
关键词 OEKO-TEX standard 100 中国 丝绸业 环保 生态纺织品 标准
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“分散黄23”被列入Oeko-Tex Standard 100禁用染料清单
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《纺织学报》 EI CAS CSCD 北大核心 2006年第5期89-89,共1页
关键词 OEKO-TEX standard 禁用染料 分散黄 清单 科学发展 最新版本 纺织品 生态学 标准
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Research on Power System Security and Stability Standards
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作者 SHU Yinbiao TANG Yong SUN Huadong 《中国电机工程学报》 EI CSCD 北大核心 2013年第25期I0001-I0026,共26页
Power system security and stability is very important to national economy and people's life,so it has been paid great attention by governments and power utilities.In order to avoid huge economic losses caused by l... Power system security and stability is very important to national economy and people's life,so it has been paid great attention by governments and power utilities.In order to avoid huge economic losses caused by large-scale blackouts,State Grid Corporation of China(SGCC)have invested sufficient human and financial resources to carry out related researches,and remarkable achievements have been achieved.However,large grid stability problem is very complex,it is still difficult to completely avoid the blackouts. 展开更多
关键词 power system security and stability standards planning and design operational control generator-grid coordination simulation modelin
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“沙狐”沙生冰草(Sandfox Standard Crested Wheatgrass)
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《草业科学》 CAS CSCD 2006年第2期109-109,共1页
沙生冰草又称荒漠冰草,是禾本科冰草属多年生草本植物。须根发达,茎杆直立、丛生,抽穗期株高40~60cm,具2~3节;叶片光滑无毛,叶长15-20cm,宽5~7mm;穗状花序,长5~8cm,有小穗30~45个。种子黄褐色,千粒重约2.57g。沙生冰... 沙生冰草又称荒漠冰草,是禾本科冰草属多年生草本植物。须根发达,茎杆直立、丛生,抽穗期株高40~60cm,具2~3节;叶片光滑无毛,叶长15-20cm,宽5~7mm;穗状花序,长5~8cm,有小穗30~45个。种子黄褐色,千粒重约2.57g。沙生冰草比扁穗冰草的植株较高,茎杆较粗,种子较大,属四倍体冰草。 展开更多
关键词 沙生冰草 standard 多年生草本植物 沙狐 抽穗期 冰草属 禾本科 千粒重 四倍体 茎杆
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Cooper Standard汽车公司扩展在中国的业务
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作者 段金栋 《车用发动机》 北大核心 2005年第1期52-52,共1页
作为一个全球性的发动机部件供应商,Cooper Standard汽车公司已经在中国昆山启动了其NVH控制系统的制造和销售业 务。公司即将在该市扩建制造和研发设施。Cooper Standard汽车公司在昆山已有建成的制造和研发设施,其目前的NVH业务 就是... 作为一个全球性的发动机部件供应商,Cooper Standard汽车公司已经在中国昆山启动了其NVH控制系统的制造和销售业 务。公司即将在该市扩建制造和研发设施。Cooper Standard汽车公司在昆山已有建成的制造和研发设施,其目前的NVH业务 就是在此基础上开展的。扩建的部分包括研发设施,而研发业务预计在2005年第4季度开始,开工生产则在2005年年底。新 设施的建成将极大地提升公司的业务量,包括发动机座、衬套以及其他NVH控制系统部件。除了生产,公司还将在昆山建立全 产品线的研发能力,以满足中国和其他亚洲地区的市场需求。 [段金栋 供稿] 展开更多
关键词 汽车 昆山 Cooper standard 中华人民共和国
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Standardized Manipulations of Heat-sensitive Moxibustion Therapy
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作者 《世界中医药》 CAS 2017年第8期1962-1964,共3页
Redacted by Specialty Committee of Heat-sensitive Moxibustion of WFCMS,Standardized Manipulations of Heat-sensitive Moxibustion(HSM).Therapy states the scope,normative references,terms and definitions,preoperative pre... Redacted by Specialty Committee of Heat-sensitive Moxibustion of WFCMS,Standardized Manipulations of Heat-sensitive Moxibustion(HSM).Therapy states the scope,normative references,terms and definitions,preoperative preparations,operation methods and procedure,indications and notice of HSM Therapy. 展开更多
关键词 Specialty Committee of Heat-sensitive Moxibustion of WFCMS Heat-sensitive Moxibustion Therapy standardized Manipulations
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竹浆纤维通过Oeko-Tex Standard 100的认证
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《印染》 北大核心 2004年第13期54-54,共1页
关键词 竹浆纤维 OEKO-TEX standard 100 上海中纺物产发展有限公司 生态纺织品 产品认证
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拥有Oeko-Tex Standard100证书的国内企业数量上升
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《针织工业》 北大核心 2006年第3期31-31,共1页
关键词 OEKO-TEX standard 企业数量 国内企业 证书 上升 有限公司 通过认证 福建地区 纺织
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