Skip Nav Destination
Close Modal
1-20 of 528 Search Results for
Mathematical Relationship
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
1
Journal Article
Demography (1978) 15 (4): 499–507.
Published: 01 November 1978
...Noreen Goldman Abstract Based on stable population theory, a mathematical relationship is developed between the intrinsic rate of increase ( r ) of a population and the ratio ( Z ) of the average number of younger sisters ever born to the average number of older sisters ever born, for a random...
Journal Article
Demography (1989) 26 (4): 711–716.
Published: 01 November 1989
... variable. The purged rates from this new method are invariant to changes in the marginal distribution of composition, but those from the earlier purging method are not. Mathematical relationships between the proposed method and other techniques are also explored. 13 1 2011 © Population...
Journal Article
Demography (1981) 18 (2): 201–216.
Published: 01 May 1981
... of preferences. The present paper focuses on marriage and advances a theoretically based, realistic, and conceptually simple solution. In the continuous case, where exact male and female ages are used, equation (11) provides a mathematical relationship which equates the sum of the male and female marriage...
Journal Article
Demography (1977) 14 (2): 239–241.
Published: 01 May 1977
...Jay D. Teachman Abstract This paper discusses the mathematical relationship between Schoen’s ∇ and an index derived from log-linear models for making compositionally controlled comparisons of the occurrence of an event in a population. The merits of each and the contributions of the log-linear...
Journal Article
Demography (1969) 6 (1): 55–74.
Published: 01 February 1969
... it will at the center while structure density and units per structure will do the opposite. THE NEGATIVE EXPONENTIAL MODEL The decline of population density with distance from the center of a metropolis can be expressed mathematically. This mathematical relationship was noted empirically by Clark (1951, pp. 490- 496...
Journal Article
Demography (1993) 30 (2): 189–208.
Published: 01 May 1993
... differentials—such as age schedules of excess mortality in the single population or the relationship between the level of excess mortality and the relative size of the single population—to make inferences about the relative importance of selection and causal processes. In this paper, a simple mathematical...
Journal Article
Demography (1984) 21 (3): 297–307.
Published: 01 August 1984
... from small, constant changes in duration-specific divorce and widowhood rates, respectively. An examination of values for the United States, Nepal and Colombia illustrates the utility of H (i) in assessing the impact of changes in widowhood and divorce and clarifies the relationship between H...
Journal Article
Demography (1983) 20 (4): 535–540.
Published: 01 November 1983
...J. Y. Parlange; M. J. Guilfoyle; R. E. Rickson Abstract The relationship between mortality levels and family fertility goals is a fundamental problem in the theory of the demographic transition. This paper deals with the logical problems of estimating family fertility rates from the expected...
Journal Article
Demography (2014) 51 (5): 1895–1931.
Published: 27 September 2014
... resources are diluted in larger families; (2) the confluence hypothesis, which suggests that the intellectual milieu of families is lowered with additional children; and (3) the admixture (“no effect”) hypothesis, which suggests that the negative relationship between family size and achievement...
Includes: Supplementary data
Journal Article
Demography (1997) 34 (3): 421–427.
Published: 01 August 1997
... the fit is extremely good (Q = .003 + .989 F 30' with an adjusted R2 of .997). The underlying mathematical relationships developed by both Preston (1986) and Kim, Schoen, and Sarma (1991) do not rely on stable population theory, but are generally applicable to observed populations. As expected, the ratio...
Journal Article
Demography (2023) 60 (1): 327–342.
Published: 01 February 2023
... have been lengthening across cohorts. Another relevant strand of research relates to the work done on formalizing mathematical relationships between demographic functions. In this regard, Finkelstein and Vaupel (2009) provided formulations to denote the survival function in terms of life expectancy...
FIGURES
| View All (6)
Includes: Supplementary data
Journal Article
Demography (1997) 34 (1): 1–15.
Published: 01 February 1997
... of the mathematical relationship between physiological injury and mortality (i.e., the Gompertz function), Sacher (1956b:256) felt that his model was still "far from adequate making valid inferences about effects on man in terms of laboratory experience." As Sacher noted (1956b:251), his procedure was the "first...
Journal Article
Demography (2018) 55 (6): 2025–2044.
Published: 02 November 2018
... be used to determine whether model C is better or worse than models A and B. The dashed line shows what can be understood from analyzing cohort deaths by age, which is the focus of the analysis Given a model for the population hazard, a mathematical relationship links the hazard function μ( z...
FIGURES
| View All (6)
Includes: Supplementary data
Journal Article
Demography (1987) 24 (4): 639–648.
Published: 01 November 1987
...), without any reference to stable population models, give almost identical results, as they should. From the foregoing discussion the following interesting points emerge: 1. Coale's adjustment, which is explained from the viewpoint of reverse projec- tion, bears a close mathematical relationship...
Journal Article
Demography (1975) 12 (3): 570.
Published: 01 August 1975
... mathematics and statistics to studies in these areas. She received greatest recognition for studies of the relationships between the biological determinants of fertility and observable demographic variables; this work focused on the development of mathematical and computer .simulation models of human...
Journal Article
Demography (2010) 47 (3): 777–800.
Published: 01 August 2010
... Perspectives , 47 , 507 – 27 . 10.1525/sop.2004.47.4.507 Ginther D. , Haveman R. , & Wolfe B. ( 2000 ). Neighborhood Attributes as Determinants of Children’s Outcomes: How Robust Are the Relationships? . Journal of Human Resources , 35 , 603 – 42 . 10.2307/146365 Gogtay...
Journal Article
Demography (1977) 14 (3): 379.
Published: 01 August 1977
..., and demog- rapher, applying mathematics and sta- tistics to studies in these areas. She re- ceived great recognition for studies of the relationships between the biological de- terminants of fertility and observable demographic variables; this work focused on the development of mathematical and computer...
Journal Article
Demography (1973) 10 (4): 697.
Published: 01 November 1973
..., biostatistician, and demographer, applying mathematics and statistics to studies in these areas. She 697 received greatest recognition for studies of the relationships between the bio- logical determinants of fertility and ob- servable demographic variables; this work focused on the development of mathematical...
Journal Article
Demography (2016) 53 (3): 597–621.
Published: 15 April 2016
.... ( 2007 ). The child health/family income gradient: Evidence from England . Journal of Health Economics , 26 , 213 – 232 . 10.1016/j.jhealeco.2006.08.003 Currie J. , & Stabile M. ( 2003 ). Socioeconomic status and child health: Why is the relationship stronger for older...
FIGURES
Journal Article
Demography (2021) 58 (3): 987–1010.
Published: 01 June 2021
... fixed effects, considering intrahousehold relationships among individuals, and addressing sample selection issues. Disaggregating the effect on separate streams, we find that girls are most underrepresented in the study of science. Our findings indicate that gender inequality in economic outcomes...
FIGURES
Includes: Supplementary data
1
