IP地址确定原则探究

文章就IP地址确定原则展开研究,分别讨论了IP地址概述、可用IP地址、特殊IP地址、IP地址如何确定的方式、IP地址分配原则等问题,最后总结了IP地址确定遵循的基本原则。     

IP地址确定原则探究

文章就IP地址确定原则展开研究,分别讨论了IP地址概述、可用IP地址、特殊IP地址、IP地址如何确定的方式、IP地址分配原则等问题,最后总结了IP地址确定遵循的基本原则。     

地理信息系统地址编码技术标准化研究

论述了地址编码技术在地址定位和空间信息整合方面的作用，以及地址编码在应用和技术发展方面的特性。基于对国内外地理编码技术的应用方法和领域的研究，文章总结了它的发展现状和在应用中存在的问题，分析了地址编码技术发展所面临的标准化需求，并就国内如何开展地址编码标准化工作进行了探讨。     

标准地址模型在PGIS中的研究与应用

本文从地理编码的角度出发，围绕当前PGIS未实现标准化地址库的现状，对标准化地址模型进行了建立，并据此设计了标准化地址数据库。本课题的研究，对于规范警用信息系统的标准地址数据库，解决警用信息系统中的地址匹配问题具有重要的意义。     

MAC地址与IP地址绑定在电子政务系统中的运用

详细介绍了MAC地址与IP地址的绑定在电子政务系统中作为一种访问控制手段的运用以及具体的实现方法。使对电子政务资源的安全管理不仅能针对具体的用户,还能针对具体的计算机硬件。     

局域网中的IP地址管理

摘要：在局域网中,IP地址并不是永久固定的,就用户来说,他们会因为某种原因更改自己的IP地址,而没有经过网络管理员审批。在局域网中像这种超出网络管理员监督之外的IP地址变更会对网络的稳定性和安全性造成影响。本文通过介绍软硬件结合的方法,将IP地址与MAC地址绑定,有效地解决IP地址管理中出现的问题,为局域网用户创设良好的网络环境。     

Ipv6地址空间的子网划分

本文就ipv6地址空间的子网划分问题做进一步探讨。对于全球地址或唯一本地地址空间的子网ID部分的子网划分,需要两个步骤,第一是决定用于子网划分的位数;第二是枚举新的子网划分后的地址前缀。     

局域网中的IP地址管理

在局域网中，IP地址并不是永久固定的，就用户来说，他们会因为某种原因更改自己的IP地址，而没有经过网络管理员审批。在局域网中像这种超出网络管理员监督之外的IP地址变更会对网络的稳定性和安全性造成影响。本文通过介绍软硬件结合的方法，将IP地址与MAC地址绑定，有效地解决IP地址管理中出现的问题，为局域网用户创设良好的网络环境。     

IP地址与子网掩码初步探究

文章就数据通信网IP、子网掩码、子网规划等问题展开阐述,其中IP部分讨论了IP地址定义、IP地址格式、IP地址的类型等。子网掩码部分详细介绍了子网掩码的概念、子网掩码编码、使用子网掩码判断主机是否处于同一网络、子网掩码的表示、私网地址、特殊IP地址等方面的问题。     

IP地址与子网掩码初步探究

文章就数据通信网IP、子网掩码、子网规划等问题展开阐述,其中IP部分讨论了IP地址定义、IP地址格式、IP地址的类型等。子网掩码部分详细介绍了子网掩码的概念、子网掩码编码、使用子网掩码判断主机是否处于同一网络、子网掩码的表示、私网地址、特殊IP地址等方面的问题。     

Does Evidence on Regional Economic Convergence Depend on the Estimation Strategy? Outcomes from Analysis of a Set of NUTS2 EU Regions

Abstract

The regional economic convergence/divergence issue has been discussed extensively recently, but results obtained are not always interpretable unequivocally as a consequence of the different estimation strategies used. As it is widely recognized, the most common theoretical framework applied to measure the speed of economic convergence among countries or regions remains the β-convergence approach, linked to the neoclassical Solow model. There have been many attempts to consider variations of the basic cross-sectional specification ranging from panel data models to Bayesian spatial econometric techniques. The application of spatial econometric methodologies is an essential tool for proper statistical inference on regional data. In this context, the aim of this paper is to connect the different results obtained in the literature. More specifically, we address whether or not evidence on convergence depends upon the estimation strategy, by taking the same set of data and systematically comparing the results obtained from different estimation strategies. The results from a set of NUTS2 EU regions conclude that both the model implied by the cross-sectional analysis and the one referring to the space-time dynamics incorporated in the panel specification point to convergence. The concept of convergence implied is, however, quite different, as demonstrated throughout the paper.     

Estimation in a generalization of bivariate probit models with dummy endogenous regressors

The purpose of this paper is to provide guidelines for empirical researchers who use a class of bivariate threshold crossing models with dummy endogenous variables. A common practice employed by the researchers is the specification of the joint distribution of unobservables as a bivariate normal distribution, which results in a bivariate probit model. To address the problem of misspecification in this practice, we propose an easy‐to‐implement semiparametric estimation framework with parametric copula and nonparametric marginal distributions. We establish asymptotic theory, including root‐n normality, for the sieve maximum likelihood estimators that can be used to conduct inference on the individual structural parameters and the average treatment effect (ATE). In order to show the practical relevance of the proposed framework, we conduct a sensitivity analysis via extensive Monte Carlo simulation exercises. The results suggest that estimates of the parameters, especially the ATE, are sensitive to parametric specification, while semiparametric estimation exhibits robustness to underlying data‐generating processes. We then provide an empirical illustration where we estimate the effect of health insurance on doctor visits. In this paper, we also show that the absence of excluded instruments may result in identification failure, in contrast to what some practitioners believe.     

WORDS, DEEDS AND OUTCOMES: A SURVEY ON THE GROWTH EFFECTS OF EXCHANGE RATE REGIMES

Abstract.  Recent studies on the growth effects of exchange rate regimes offer a wide range of different, sometimes contradictory results. In this paper, we systematically compare three prominent contributions in this field. Using a common data set, a common specification and common estimation methods, we argue that the contradictory findings can be explained by the fact that these studies use regime classifications which reflect fundamentally different aspects of exchange rate policy.     

汽车美容养护中心选址评估研究

本文借助零售业选址研究中的相关理论,结合汽车美容养护中心实际情况,建立了汽车美容养护中心的选址指标及评价模型。并选用上海市松江区九亭地区的案例及相关数据对模型检验,从而给出了汽车美容养护行业选址评估的新方法。     

IP地址、子网掩码和特例探讨

介绍IP地址和子网掩码的快速计算方法。并探讨在类似C类地址252掩码下,首尾IP地址是否可用的原因。     

文化差异对品牌商标翻译的影响探析——霍夫斯坦特之“共同心理程序”与刘宓庆之“文化心理”论

在产品走国际化路线的过程中,精准的商标名称翻译无疑是打开国际市场之门的一把闪光的金钥匙。本论文引进文化大师霍夫斯坦特之"共同心理程序"与知名翻译家刘宓庆之"文化心理"论,结合几种基本翻译法的应用分析以及品牌商标名称设计及翻译的相应理念与原则,阐释文化差异对品牌商标名称翻译所产生的影响,并归纳总结出商标翻译过程中应遵循的原则及如何选择正确翻译法以避免文化差异所带来的负面影响。     

C语言中的指针运算

指针是C语言的精华、重点、难点,也是C系列语言的基础。本文介绍了C语言中的指针常量和指针变量的运算规则,以及对数组的访问。     

MODELING REGIONAL ECONOMIC GROWTH WITH A FOCUS ON AMENITIES

While the literature is clear that areas endowed with scenic beauty, lakes, forests, and wildlife among other natural and built amenities are experiencing robust economic growth, the theoretical foundations for this work are weak. In this study, we employ a Bayesian Modeling Average (BMA) approach to address the problem of model specification. Using data for US counties, we estimate a neoclassical growth model while looking at growth over the 1990s. We look at three separate ways of measuring amenities and recreational opportunities that build on those amenities. While the results suggest that higher amenity areas experience faster growth, still some level of value-added development may be required to realize that growth.     

产品品种规格类标准的研制方法

本文分析了品种规格标准的属性、地位、建立、作用等特点,论述了品种规格标准的内容结构及其要素,划分了五种品种规格类标准的类型,分别阐述了每种标准的主要内容、表述方式和作用等,研究了品种规格的分类和命名关系,讨论了标准中优选原则的建立,论述了品种规格优选的方法,提供了标准中管理的典型内容,给出了标准应用指导的设计方法。     

无人机飞行品质规范发展思考

文章首先对无人机飞行品质规范发展现状进行了分析,介绍了国外无人机飞行品质规范的研究前沿;针对飞行品质规范的强制性问题进行了分析;最后总结了对我国无人机飞行品质规范发展的几点启示。