Critique

Abstract

The ethnic segmentation of the cigarette market is currently controversial, but not a new phenomenon. A census of 540 cigarette ads from 1950–1965 Ebony magazines, compared to a matched sample from Life, reveals segmented and segregated advertising toward black consumers. The ads in Ebony eventually featured black models almost exclusively, primarily professional athletes. Despite endorsements from black athletes and musicians also famous to white audiences, none of these appeared in the Life ads. On average, the segregated advertising was two to three years tardy in offering filtered products to black consumers, suggesting that appeals to black pride were not without prejudice. Potential reasons for these historical results are discussed, as are current practices.     

论海外企业的抵补保值

<正> 随着对外开放的日益深入,许多进出口公司为了拓展海外市场,纷纷在海外成立一些行政上隶属本公司,经营上完全独立、自负盈亏的海外企业。这些企业的成立,对公司直接听取消费者意见,了解市场需求,扩大商品销售均起着不可估量的作用。     

STARFIX定位系统简介

本文简述了美国新近研制的一种卫星定位系统STARFIX的工作原理、系统组成、优缺点以及使用场合,并与美国现有的和将来使用的其他几种定位系统作了比较。文章给出了系统原理图、分系统方框图和性能比较表。     

Using choice experiments to value catchment and estuary health in Tasmania with individual preference heterogeneity*

Choice experiments (CE) have become widespread as an approach to environmental valuation in both Australia and overseas. However, there are few valuation studies that have addressed natural resource management (NRM) changes in Tasmania. Furthermore, few studies have focussed on the estimation of estuary values. The CE study described in this paper aims to analyse community preferences for NRM options in the George catchment, Tasmania. Catchment health attributes were: the length of native riverside vegetation; the number of rare native animal and plant species in the George catchment; and area of healthy seagrass beds in the Georges Bay, which was used as a measure of estuary condition. Mixed logit models with interactions between socio‐economic variables and the choice attributes were estimated to account for systematic and random taste heterogeneity across respondents. Results reveal considerable variation in preferences towards the attributes and show that value estimates are significantly impacted by the way in which we account for preference heterogeneity. Preference heterogeneity thus needs to be considered when estimating community willingness‐to‐pay for environmental changes. This study further shows little responsiveness to the presented changes in estuary seagrass area.     

智慧BIM乔木模型：从设计图纸到施工 现场

现有的BIM应用软件提供的乔木模型多为RPC或高 精度3D模型等3D CAD类型。这些模型着重于表达美感或进 行展示,无法反映根系情况。虽然可能包含一定附加属性,但 表达乔木生长和空间需求的功能有限。因而,冲突检查、工序 调度等BIM的优势功能无从应用。风景园林实践领域已就此问 题开始构建自己的模型库,但能够准确反映现状树木真实尺寸 体量,以及现状树木和规划树木未来空间需求的模型仍未广泛 出现。提出一种基于树冠、树干和根系构型与生长功能的实体/ 网面封装建模方法构建BIM乔木模型。模型形态通过一组参数 调整,并根据树龄和反映环境限制因子的值来反映其变化。所 包含的数据和参数数量随后期设计阶段所需的LoD(详细层级) 及专业实践的具体要求而增加。该模型可以与提供本地区内外 苗木商品信息的植物数据库连接使用。     

美国以自然资源保护为宗旨的土地休耕经验

美国土地休耕制度包括一系列水土保持计划和以土壤侵蚀度为主要指标的水土保持评价标准,它通过一系列耕地保护计划来推行。回顾美国农业耕作土地采取休耕政策及其实施情况,讨论了值得我国学习和借鉴的土地休耕计划的政策的成本费用等问题。     

地区间经济互动与增长差异:一个理论分析框架

尝试将地区间经济增长差异放入一个可分析的经济学模型框架中加以理解。通过建立一个数学形式的经济增长模型,试图从地区间经济互动的角度去理解地区间经济增长之差异,从模型分析中推导出若干有意义的结论。     

中国区域产业结构趋同问题实证分析

通过从霍夫曼系数、相似系数、区位商等诸多指标进行实证分析后发现 ,中国的区域产业结构趋同问题实际上是特定阶段的产物 ,是对改革开放前重工业化超前发展的工业化道路和区域平衡发展战略的补偿性调整 ,而市场的力量逐渐扭转了区域产业结构趋同的状况 ,推动中国的产业结构逐渐走向协调 ,促进区域分工体系的建立和完善     

The Human Development Approach: An Overview

The human development (HD) approach puts the improvement of people’s lives as the central objective of development. This paper provides an overview of major aspects of the approach. It shows how it emerged with the evolution of development thought and a widening of development objectives The paper explores the two-way relationship between HD and the rival objective, economic growth, is explored and broad characteristics of countries that have been exceptionally successful or unsuccessful , countries with three country cases considered in greater depth. The paper identifies major dimensions of HD, beyond the three elements included in the Human Development Index (HDI) and shows they are poorly captured by the HDI. An overview of global change on HD dimensions from 1980 to 2015 gives a mixed picture with progress on basic HD, uneven trends in some areas, and notable worsening on the environmental dimension. In conclusion, the paper discusses some outstanding issues which need more attention.     

联合国粮农组织在林业部门的分权管理经验

简要回顾了联合国粮农组织的分权管理经验。在粮农组织的技术支持下,布基纳法索和马里正在施行分权管理法律,因此这两个国家提供了范例。分析了政府的森林资源管理权下放所必备的专业知识、介入时机和介入策略。依据各种必备的条件和因素提出了相关对结论和建议。正是需要这些条件和因素才能确保森林资源分权管理更具可持续性,民众参与程度更高,政府责任心更强,且森林资源利益分配过程更为公平。文中还提供了如下信息:国际技术援助程序、如何帮助受援国将相关法律和法规转变为具体而新颖的制度安排,以及该领域中未来的工作要点等。