scholarly journals Estimating Local Daytime Population Density from Census and Payroll Data

2018 ◽  
Author(s):  
Geoff Boeing
Keyword(s):  
Population Density ◽  
San Francisco ◽  
Census Data ◽  
Population Densities ◽  
Land Use Patterns ◽  
Use Patterns ◽  
Travel Diaries ◽  
Gps Traces ◽  
Us Census ◽  
Regional Land

Daytime population density reflects where people commute and spend their waking hours. It carries significant weight as urban planners and engineers site transportation infrastructure and utilities, plan for disaster recovery, and assess urban vitality. Various methods with various drawbacks exist to estimate daytime population density across a metropolitan area, such as using census data, travel diaries, GPS traces, or publicly available payroll data. This study estimates the San Francisco Bay Area's tract-level daytime population density from US Census and LEHD LODES data. Estimated daytime densities are substantially more concentrated than corresponding nighttime population densities, reflecting regional land use patterns. We conclude with a discussion of biases, limitations, and implications of this methodology.

scholarly journals Urban Growth and Demographic Dynamics in Southern Europe: Toward a New Statistical Approach to Regional Science

2018 ◽  
Vol 10 (8) ◽  
pp. 2765 ◽  
Author(s):  
Mariateresa Ciommi ◽  
Francesco Chelli ◽  
Margherita Carlucci ◽  
Luca Salvati
Keyword(s):  
Population Density ◽  
Urban Expansion ◽  
Population Decline ◽  
Land Use Patterns ◽  
Urban Forms ◽  
Use Patterns ◽  
Demographic Dynamics ◽  
Steep Decline ◽  
Spatio Temporal ◽  
Linear Regression Modeling

Metropolitan growth in Europe has resulted in drastic changes of urban forms, socio-spatial structures and land-use patterns due to sequential processes of urbanization, suburbanization and re-urbanization. To assess latent shifts from mono-centric models towards more disarticulated and decentralized settlement configurations, the present study evaluates spatio-temporal patterns of growth between the 1920s and the 2010s in three Mediterranean cities with different structure and functions (Barcelona: compact and moderately polycentric; Rome: dispersed, medium-density; Athens: mono-centric, hyper-compact). To identify and characterize long-term urban transformations, an original approach was illustrated in this study, based on a multivariate analysis of 13 indicators resulting from descriptive statistics and linear regression modeling the relationship between population density and distance from inner cities. The empirical results of this study indicate that Barcelona, Rome and Athens have experienced different urbanization cycles, characterized by a (more or less) concentrated distribution of population along urban gradients. Despite similarities in demographic dynamics and planning practices, these processes have determined (i) a mostly centralized growth in Barcelona, (ii) a relatively dispersed and discontinuous spatial structure in Rome, and (iii) a steep decline of population density with the distance from downtown Athens. Compact urban expansion, population decline and urban de-concentration were finally assessed using the analytical approach proposed in this study.

scholarly journals Estimating historical land use patterns in Amazonia for hydrological studies

2017 ◽  
Vol 8 (4) ◽  
pp. 189-197
Author(s):  
Christiane Cavalcante Leite ◽  
Marcos Heil Costa ◽  
Ranieri Carlos Ferreira de Amorim
Keyword(s):  
Land Use ◽  
Water Resources ◽  
Land Use Change ◽  
Census Data ◽  
Land Use Patterns ◽  
Use Patterns ◽  
The Past ◽  
The World ◽  
Historical Land Use ◽  
Past Land Use

The evaluation of the impacts of land-use change on the water resources has been, many times, limited by the knowledge of past land use conditions. Most publications on this field present only a vague description of the past land use, which is usually insufficient for more comprehensive studies. This study presents the first reconstruction of the historical land use patterns in Amazonia, that includes both croplands and pasturelands, for the period 1940-1995. During this period, Amazonia experienced the fastest rates of land use change in the world, growing 4-fold from 193,269 km2 in 1940 to 724,899 km2 in 1995. This reconstruction is based on a merging of satellite imagery and census data, and provides a 5'x5' yearly dataset of land use in three different categories (cropland, natural pastureland and planted pastureland) for Amazonia. This dataset will be an important step towards understanding the impacts of changes in land use on the water resources in Amazonia.

The Middle Palaeolithic Site of Karabi Tamchin (Crimea, Ukraine): 1999–2001 Excavation Seasons

2003 ◽  
Vol 69 ◽  
pp. 137-159 ◽  
Author(s):  
A. Yevtushenko ◽  
A. Burke ◽  
C.R. Ferring ◽  
V. Chabai ◽  
K. Monigal
Keyword(s):  
Mountain Range ◽  
Middle Palaeolithic ◽  
Land Use Patterns ◽  
Essential Information ◽  
Use Patterns ◽  
Eastern Crimea ◽  
Crimean Mountain ◽  
First Time ◽  
Faunal Exploitation ◽  
Regional Land

The Middle Palaeolithic site of Karabi Tamchin is presented here for the first time. Karabi Tamchin is a collapsed rock-shelter in Eastern Crimea (Ukraine), and is the only known, stratified Palaeolithic site in the highland regions of the First Crimean mountain range. Preliminary results of three excavation seasons indicate that the site differs fundamentally from Middle Palaeolithic sites excavated at lower altitudes, in terms of both lithic and faunal exploitation. The site, therefore, provides essential information regarding regional land-use patterns in Crimea. Karabi Tamchin was probably repeatedly occupied by relatively small, mobile groups during short-term, possibly seasonal hunting forays into upland regions.

Modelling the impacts of payments for biodiversity conservation on regional land-use patterns

2007 ◽  
Vol 83 (4) ◽  
pp. 255-267 ◽  
Author(s):  
G.H.J. de Koning ◽  
P.C. Benítez ◽  
F. Muñoz ◽  
R. Olschewski
Keyword(s):  
Land Use ◽  
Biodiversity Conservation ◽  
Land Use Patterns ◽  
Use Patterns ◽  
Regional Land

A Cohort Location Model of household sorting in US metropolitan regions

Urban Studies ◽  
2016 ◽  
Vol 55 (1) ◽  
pp. 71-90 ◽  
Author(s):  
Hossein Estiri ◽  
Andy Krause
Keyword(s):  
Census Data ◽  
Location Model ◽  
City Centre ◽  
Housing Consumption ◽  
Land Use Patterns ◽  
Metropolitan Regions ◽  
Use Patterns ◽  
Metropolitan Development ◽  
Housing Career ◽  
The City

In this paper we propose a household sorting model for the 50 largest US metropolitan regions and evaluate the model using 2010 Census data. To approximate residential locations for household cohorts, we specify a Cohort Location Model (CLM) built upon two principle assumptions about housing consumption and metropolitan development/land use patterns. According to our model, the expected distance from the household’s residential location to the city centre(s) increases with the age of the householder (as a proxy for changes in housing career over life span). The CLM provides a flexible housing-based explanation for household sorting patterns in US metropolitan regions. Results from our analysis on US metropolitan regions show that households headed by individuals under the age of 35 are the most common cohort in centrally located areas. We also found that households over 35 are most prevalent in peripheral locations, but their sorting was not statistically different across space.

Numerical responses of red-winged blackbird populations to changes in regional land-use patterns

1986 ◽  
Vol 64 (9) ◽  
pp. 1944-1950 ◽  
Author(s):  
Robert G. Clark ◽  
Patrick J. Weatherhead ◽  
Hamilton Greenwood ◽  
Rodger D. Titman
Keyword(s):  
Breeding Season ◽  
Landscape Heterogeneity ◽  
Breeding Habitat ◽  
Crop Damage ◽  
Agelaius Phoeniceus ◽  
Strong Positive Correlation ◽  
Land Use Patterns ◽  
Corn Production ◽  
Use Patterns ◽  
Regional Land

The red-winged blackbird (Agelaius phoeniceus) population in southwestern Quebec more than doubled between 1966 and 1981, apparently in response to increased corn production. In southwestern Ontario less pronounced increases in blackbirds and corn production also occurred. Although larger blackbird populations have been responsible for greater crop damage, it is the waste corn left in fields by mechanical harvesters that supports the increased blackbird population. The increased availability of waste corn during the spring and summer (breeding season) was likely most important in allowing the blackbird population to grow. This conclusion is supported by our census of blackbird populations in 38 counties in southwestern Quebec during the breeding season, which indicated a strong positive correlation between blackbird abundance and corn production in a county. Although corn production explains much variation in the size of blackbird populations, other factors such as the availability of breeding habitat and the spatial distribution of habitats (landscape heterogeneity) may be responsible for additional variation.

Tamils and the Haunting of Justice

2014 ◽  
Author(s):  
Andrew C. Willford
Keyword(s):  
Migrant Workers ◽  
Race And Ethnicity ◽  
Kuala Lumpur ◽  
Labor Costs ◽  
Way Of Life ◽  
Land Use Patterns ◽  
Use Patterns ◽  
Critical Issues ◽  
The Law ◽  
Law And Justice

In 2006, dejected members of the Bukit Jalil Estate community faced eviction from their homes in Kuala Lumpur where they had lived for generations. City officials classified plantation residents as squatters and questioned any right they might have to stay. This story epitomizes the dilemma faced by Malaysian Tamils in recent years as they confront the collapse of the plantation system where they have lived and worked for generations. Foreign workers have been brought in to replace Tamil workers to cut labor costs. As the new migrant workers do not bring their whole families with them, the community structures need no longer be sustained, allowing more land to be converted to mechanized palm oil production or lucrative housing developments. Tamils find themselves increasingly resentful of the fact that lands that were developed and populated by their ancestors are now claimed by Malays as their own; and that the land use patterns in these new townships, are increasingly hostile to the most symbolic vestiges of the Tamil and Hindu presence, the temples. This book is about the fast-approaching end to a way of life, and addresses critical issues in the study of race and ethnicity. It demonstrates which strategies have been most “successful” in navigating the legal and political system of ethnic entitlement and compensation. It shows how, through a variety of strategies, Tamils try to access justice beyond the law-sometimes by using the law, and sometimes by turning to religious symbols and rituals in the murky space between law and justice.

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