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Travel Speed

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Journal Article
Demography (1967) 4 (1): 360–362.
Published: 01 March 1967
...James N. Morgan Summary The notions that most people travel to the center of the city to work and that the farther out they live the longer it takes are only appropriate for middle-sized cities. In larger urban areas, many people work outside the center, and it is the speed of travel which most...
Journal Article
Demography (1997) 34 (2): 171–187.
Published: 01 May 1997
... Association of America 1997 1997 Global Position System Graphic Information System Family Planning Travel Time Travel Speed References Albert D.P. , Gesler W.M. , & Wittie P. ( 1995 ). Geographic Information Systems and Health: An Educational Resource . Journal...
Journal Article
Demography (2011) 48 (3): 841–861.
Published: 04 June 2011
.... An analogy may be useful. Consider a car traveling for a fixed duration of time. Its speed varies during the journey: rounding a sharp bend or going uphill, it slows down, while on the straight or downhill, it travels faster. Speed may vary also depending on terrain, traffic, the driver’s inclinations...
Journal Article
Demography (2018) 55 (4): 1317–1341.
Published: 07 June 2018
... questions are of particular importance. First, Who are the people who are able to maintain cognitive abilities (e.g., memory, reasoning, and processing speed) in old age? Second, How do these people differ from those who cannot maintain cognitive abilities in old age? Two main (and somewhat competing...
FIGURES | View All (6)
Includes: Supplementary data
Journal Article
Demography (2008) 45 (3): 489–514.
Published: 01 August 2008
... is well-de ned and comparable across place and time. Here we use radial distance to de ne scale, though it would be possible to use other metrics of scale. For example, local environments could be de ned in terms of population size or travel time. We leave discussion of the relative merits...
Journal Article
Demography (1979) 16 (3): 401–415.
Published: 01 August 1979
... in the past few decades have in- cluded the high-speed automobile and hard-surfaced highway, plus improve- ments in indirect electronics. This spatial expansion of the metropolis has some lim- its, of course, as points beyond commu- ting range of the metropolitan center are reached. The overall growth...
Journal Article
Demography (1993) 30 (2): 143–157.
Published: 01 May 1993
... use. Therefore the patterns in Botswana in the 1980s can be described as a combination of (1) a general fertility decline of about one child per woman, which had taken place by about 1985 and which has continued in urban areas, though at a slightly lower speed, and (2) a recent leveling off and indeed...
Journal Article
Demography (2011) 48 (3): 1127–1149.
Published: 25 June 2011
... records and travel documentation for her day’s activities. These administrative data contain some paradata deliberately introduced into the NSFG field design: observations about whether the household may contain children, on the likelihood of non-English speakers, and about concerns raised by a household...
Journal Article
Demography (1968) 5 (2): 553–560.
Published: 01 June 1968
... plan- ning. Since the fellowship program began, awards have been made to a total of 529 men and women, of whom 404 have been from the less developed countries. Further stimulation of professional in- terest and involvement in the field has been given by travel grants and by sup- port of international...
Journal Article
Demography (2016) 53 (5): 1453–1476.
Published: 13 September 2016
... states to new destinations. We discuss this point later, in the section Mexican Immigration to the United States. Second, people traveling in groups may not be adequately captured in the EMIF, particularly when they are part of the same household. Indeed, in such cases, the family head may be the most...
FIGURES
Includes: Supplementary data
Journal Article
Demography (1968) 5 (2): 679–689.
Published: 01 June 1968
.... Each vasectomy ac- ceptor receives about $3.00 as compensa- tion for work time lost, and the field staff receive a 36~ vasectomy referral fee, an 18~ lUCD referral fee, and a small travel allowance. Any acceptors experiencing major or minor medical difficulties can ob- tain treatment free. The program...
Journal Article
Demography (1971) 8 (1): 1–12.
Published: 01 February 1971
... of the Principle of Population . London : John Murray . Malthus , T. R. ( 1936 ). The Principles of Political Economy . Second Edition London : London School of Economics and Political Science . Malthus , T. R. ( 1966 ). Patricia James The Travel Diaries of Thomas Robert Malthus...
Journal Article
Demography (1993) 30 (2): 175–188.
Published: 01 May 1993
... and travel to Nepal's capital city of Kathmandu and beyond. Until very recently, Timling's inhabitants were strongly pronatalist. Reasons for having children, as expressed in earlier fieldwork (Fricke 1986), included their importance in the household economy, in diversifying family production by the entry...
Journal Article
Demography (1996) 33 (2): 181–192.
Published: 01 May 1996
... on pregnancy outcomes, and justify abor- tion activists' interest in this issue. The primary purpose of this paper is to estimate the ef- fect of expansions in Medicaid income eligibility on resolu- tion of pregnancy. States have differed in the timing, speed, and extent of their response to congressional...
Journal Article
Demography (2005) 42 (2): 275–299.
Published: 01 May 2005
... Demography, Volume 42-Number 2, May 2005 equality speed or slow with the transition to a rapid-growth economy? Finally, is there evidence that costs introduced in the period of reforms disproportionately affected deci- sions about girls' schooling? Answers to these questions illuminate the modernization...
Journal Article
Demography (2018) 55 (5): 1979–1999.
Published: 01 October 2018
..., because social data are traditionally gathered using surveys, we do not have a clear understanding of the speed at which behaviors and attitudes change or the sorts of social factors that influence this change. With sources of digital traces such as social media sites, however, we are able to not only...
Journal Article
Demography (1968) 5 (2): 561–573.
Published: 01 June 1968
... to reducetheir population growth rate to 1.9 percentby the . end of 1970(489-11-580-649 52OO 99,000 1,490,900 Philippines: Reprints and travelto regional meetings 35,000 Travel grants 25,000 Population planning: Family planning activities are being funded in the Asian Social Institute, Family Planning...
Journal Article
Demography (2021) 58 (6): 2337–2364.
Published: 01 December 2021
... if they had access to railroads. Over shorter distances outside the railroad network, travel by horse and stagecoach was limited to an effective speed of less than six miles per hour ( Perez-Cervantes 2014 ). As a result, families living in different counties, and certainly those in different states, had...
FIGURES
Includes: Supplementary data
Journal Article
Demography (2021) 58 (5): 1817–1841.
Published: 01 October 2021
... systems and the greater potential for regular and intensive intergenerational interaction and support exchange increase evenly the speed of fertility transitions regardless of parity. However, it is also possible that the accumulation of childcare experience among existing parents works to reduce...
Includes: Supplementary data
Journal Article
Demography (2002) 39 (1): 1–23.
Published: 01 February 2002
... shutdown of commerce, industry, and travel; and an increase in health care costs (Glover and Jessup 1999). In this article, I describe how the forest fires occurred and why the effects were so widespread and long lasting. The main focus is on assessing the population health effects of the air pollution...