High resolution dasymetric model of U.S demographics with application to spatial distribution of racial diversity     

《Applied geography (Sevenoaks, England)》2014

Population and demographic data at high spatial resolution is a valuable resource for supporting planning and management decisions as well as an important input to socio-economic academic studies. Dasymetric modeling has been a standard technique to disaggregate census-aggregated units into raster-based data of higher spatial resolution. Although utility of dasymetric mapping has been demonstrated on local and regional scales, few high resolution large-scale models exist due to their high computational cost. In particular, no publicly available high resolution dasymetric model of population distribution over the entire United States is presently available. In this paper we introduce a 3″ (∼90 m) resolution dasymetric model of demographics over the entire conterminous United States. The major innovation is to disaggregate already existing 30″ (∼1 km) and 7.5″ (∼250 m) SEDAC (Socioeconomic Data and Applications Center) Census 2000 grids instead of the original census block-level data. National Land Cover Dataset (NLCD) 2001 is used as ancillary information. This allows for rapid development of a U.S.-wide model for distribution of population and sixteen other demographic variables. The new model is demonstrated to markedly improve spatial accuracy of SEDAC model. To underscore importance of high spatial resolution demographic information other than total population count we demonstrate how maps of several population characteristics can be fused into a “product” map that illustrates complex social issues. Specifically, we introduce a “diversity” categorical map that informs (at nominal 3″ resolution) about spatial distribution of racial diversity, dominant race, and population density simultaneously. Diversity map is compared to a similar map based on census tracts. High resolution raster map allows study of race-diversity phenomenon on smaller scale, and, outside of major metropolitan areas, revels existence of patterns that cannot be deduced from a tract-based map. The new high resolution population and diversity maps can be explored online using our GeoWeb application DataEye available at http://sil.uc.edu/. Both datasets can be also downloaded from the same website.  相似文献   

基于“人口红利”视角的东莞市产业经济发展分析   总被引：1，自引：0，他引：1  

梁湘萍  许新立 《云南地理环境研究》2011,23(1):99-104

选取依靠外来劳动力发展经济最典型的地区东莞作为研究对象,研究人口红利对东莞区域经济发展的影响。研究发现,外来工对东莞经济发展起到重要支撑作用,东莞利用人口红利发展"外来工经济"的特征明显。但人口红利对东莞在产业升级、社会治安、资源环境、城市可持续发展等区域经济发展问题上也存在不利影响。东莞市面临着经济和社会双转型的问题,必须从以"廉价劳动力优势"换取积累的模式转向低投入、低消耗、低排放和高效率的轨道,可以通过转化加强职业教育投入、重视本土企业发展等措施应对这一问题。  相似文献   

Study on the migrant labour force of China in recent years     

Xiaopei Yan 《中国地理科学(英文版)》1997,7(1):19-29

This paper, taking Nanhai City of Guangdong Province as an example, focuses on five interrelated aspects of the migrant labour force of China in recent years. Attention is initially paid to the background of the labour migration from inland towards coastal area. Then, the demographic characteristics of the migrant labour force are analysed before turning to the analysis on the reasons for the migration. Fourthly, the impacts of the migrant workers on the socio-economic development of Nanhai City and the problems are examined. Finally, the prospects and some suggestions for the labour migration are put forward. Migrant labour force is sometimes called floating population by both Chinese and western scholars.  相似文献   

New Zealand Census 2013: A short commentary on the role which the Census plays and the findings of the 2013 Census          下载免费PDF全文

Malcolm Campbell 《New Zealand geographer》2015,71(2):105-109

This short paper aims to discuss the role and the importance of the Census in New Zealand. It also discusses some of the multitude of uses of Census data in various contexts to help us understand the demographic and socio‐economic landscape of New Zealand. Debates internationally on the nature, scale and frequency of a national Census, or even whether a Census is necessary at all, mean that we cannot take this valuable resource for granted. With this in mind, we as geographers have a wealth of data to explore and analyse that we should take full advantage of. What gets counted counts!  相似文献   

The Characteristic Differences between Ecological Culture and Low-carbon Tourism Cognition under the Vision of Carbon Neutrality     

CHENG Jinhong  LI Shuxiao  WANG Zheng  CHENG Zhanhong 《资源与生态学报(英文版)》2022,13(5):936-945

Ecological culture has a low-carbon attribute, which coincides with the concepts of energy conservation and emission reduction in low-carbon tourism. Analyzing the differences in the public perception of the two is of great significance for achieving the carbon neutral goal of tourism. Firstly, the views of nature, equality and ecology in ecological culture, as well as the cognition and participation willingness for low-carbon tourism were identified by using the principal component analysis method. Secondly, all samples were divided into four types of ecological culture cognition: sufficient, relatively sufficient, general and poorer, by the K-means clustering method. Thirdly, significant differences in the low-carbon tourism cognition among different types were revealed by using the ANOVA method. Finally, the influences of the main demographic characteristics on the low-carbon tourism cognition were analyzed. This analysis showed that gender, age, education level and income level had significant differences in some aspects of low-carbon tourism cognition and participation willingness, especially education level. On this basis, several corresponding strategies were put forward for managing the cognitive differences of the different types, which could contribute to the realization of the carbon neutral vision of tourism.  相似文献   

带有习惯形成的最优消费-投资与闲暇选择问题     

朱永王  费为银  苏凯 《南京气象学院学报》2012,4(5):476-480

研究了在带有习惯形成,随机机会集,随机工资和劳动供给弹性的生命周期模型下的消费-投资和闲暇选择问题.在股票支付红利情形下,利用随机微分方程,建立了带有红利情形的证券市场模型.在投资者偏好由不可分离的冯诺依曼·摩根斯坦指数刻画下,给出了投资者最优消费-投资与闲暇选择策略的显式表达式.  相似文献   

“机器代人”与城镇新增长模式 ——以广东省佛山市顺德区为例     

黄玫瑜  秦小珍  周金苗 《热带地理》2019,39(1):11-19

为分析“机器代人”影响下的劳动密集型城镇新增长动力,文章构建了“机器代人”背景下城镇新增长模式的分析框架,以珠三角城镇增长的代表性地区--佛山市顺德区为案例,重点从技术、产业、人口和空间4个方面进行了探讨。研究发现：“机器代人”的推广应用极大地促进了地区的技术升级,企业和政府共同推动着地区技术升级路径从“二次创新”走向“一次创新”。技术升级对产业升级和人口变化产生重要的影响,一方面促使了家电等传统产业转型升级,传统产业对自动化设备的需求又带动了机器人产业的发展;另一方面削减了普通劳动力需求,催生新的就业机会,促使地区就业结构变化。产业升级和人口变化共同促进空间组织产生变化,创新要素在空间上扩散与集聚,区域形成“大集聚、小分散”的格局,边界地区成为区域新的增长核心。在“机器代人”影响下顺德区形成了技术、产业、人口和空间相互影响与促进的城镇新增长模式。  相似文献   

AN EVALUATOR'S VIEW OF NDEA INSTITUTE PROPOSALS     

《The Professional geographer》2013,65(1):38-40

This paper analyzes the surprisingly great variation in demographic character across the states, utilizing data on fertility, mortality, age, sex, mobility, household character, abortion, race and ethnicity. A fairly simple regional pattern is revealed that is less related to levels of economic development than to long-standing historical cultural differences.  相似文献   

Commentaries on “Automated Geography”. Automated Geography and the DIDS (Decision Information Display System) Experiment     

《The Professional geographer》2013,65(3):339-340

Age profiles of geographers having varying topical and areal subfields are compiled using the Guide to Graduate Departments of Geography in the United States and Canada, 1983–1984 and the 1982 AAG Directory. Major retirement trends for the next 10 to 20 years suggest that replacement of faculty may raise key appointment issues and priorities that may significantly change the nature of academic geography.  相似文献   

Population in Advanced Placement Human Geography     

《The Journal of geography》2012,111(3-4):99-110

Abstract

The Advanced Placement human geography course affords high school students the opportunity to experience an introductory college-level course in geography. Population is one of six major themes in the course. The course outline identifies four key areas of study in the population unit: geographical analysis of population, population distribution and composition, population growth and decline over time and space, and population movement. This article addresses each of these areas of study and identifies examples of concepts, topics, and types of data that could form the basis for instructional activities. A resource list is provided for additional reading.  相似文献