浅议以太网基本性能测试指标及相应的测试方法

本文就目前国际上对以太网基本性能测量的指标进行整理和分析并给出了相应的测试方法。     

基于决策树方法的油炸型方便面品质评价研究

本实验以市场占有率为80%～90%的国内主要方便面生产厂家的12个主打品牌的205个油炸型方便面样品为研究对象,首先以8个专家感官评价项目为指标,采用K-均值法对感官品评数据进行了聚类分析;根据聚类分析结果再应用决策树分析方法,以15个物性检测项目为指标,建立感官品评和面条物性指标之间关系模型。结果表明,所建立的决策树模型吻合感官品评聚类结果的精度达到95.61%,实现了表达仪器测量值与感官品评之间关系的目的,可为油炸型方便面品质评价提供一种客观定量化的方法。     

LED灯具标准体系建设研究(下)

（续上期） 5国际和国内LED灯具相关标准简介 5．1我国已经制定的灯具国家标准和行业标准     

新疆组织机构代码系统安全体系建设的研究

为适应新疆企业基础信息共享平台建设的要求,本文提出了新疆组织机构代码系统数据安全的建设目标及建设内容,从物理环境、链路及网络、系统层、应用层、数据和管理等六个层面构建了组织机构代码系统的安全体系结构,用于指导新疆组织机构代码系统数据安全建设。     

GC/MS法分析硫磺熏蒸对杭白菊挥发油成分的影响

分析杭白菊通风晾干品和硫磺熏蒸品的挥发油成分,为其质量评价提供科学依据.采用水蒸气蒸馏法提取7个杭白菊样品挥发油,用GC毛细管色谱柱进行分离,归一化法测定其相对百分含量,GC/MS法分析鉴定其化学成分.初步分离鉴定出64种成分,其挥发油组成皆以单萜类和倍半萜类化合物为主要成分,但所含化合物的具体种类有很大差异.经硫磺熏...     

Application of thermal comfort theory in probabilistic safety assessment of a nuclear power plant

Human factor errors in probabilistic safety assessment(PSA) of a nuclear power plant(NPP) can be prevented using thermal comfort analysis.In this paper,the THERP+HCR model is modified by using PMV (Predicted Mean Vote) and PPD(Predicted Percentage Dissatisfied) index system,so as to obtain the operator cognitive reliability,and to reflect and analyze human perception,thermal comfort status,and cognitive ability in a specific NPP environment.The mechanism of human factors in the PSA is analyzed by operators of skill,rule and knowledge types.The THERP+HCR model modified by thermal comfort theory can reflect the conditions in actual environment,and optimize reliability analysis of human factors.Improving human thermal comfort for different types of operators reduces adverse factors due to human errors,and provides a safe and optimum decision-making for NPPs.     

蜜罐技术系统在局域网安全中研究与设计

本文对蜜罐的关键技术进行了深入研究并进行了详细论述,并在此基础上结合现有工具和技术设计实现了一个改进的高交互度的蜜罐系统。该蜜罐系统成功实现了多层次的数据捕获和数据控制功能。     

Relationship Between Distribution of Residents' Travels and Intensity of Mixed Land-use:A Case Study on Central Districts of Guangzhou City

In recent years,the land-use structure of Guangzhou City has greatly changed along with the expansion of city size and the trans-formation of spatial layout,employment market,and real estate market,influencing in consequence the layouts of housing and employment and then the distribution of residents' travels.The study on the relationship between the distribution of residents' travels     

China's Plastics Industry keeping Sustainable Developing Pace

China' s plastics industry has continued to maintain steady and rapid outgrowth with China' s economy development. As one year of the "Eleventh     

Addition of Minority Languages to Standards of Safety Information

The necessity of adding safety information which is in minority languages into standards is discussed.The requirements of the WTO-TBT agreement and IEC are analyzed.The relevant laws and foundation technology for minority languages in China are discussed.The precedents of standards or technical regulations are enumerated. The conclusion is put forward that safety information in minority languages should be added into standards as soon as possible.