Zenas M Sykes
Biographic Data
| ID | 2497895 |
|---|---|
| NAME | Zenas M Sykes |
| GIVEN NAMES | Zenas M |
| FAMILY NAME | Sykes |
| SIGNATURE | SYKES Z M |
| AFFILIATIONS | Department of Population Dynamics, The Johns Hopkins University, Baltimore, Maryland 21205 |
| VERIFIED | No |
| TOTAL WORKS | 2 |
| TOTAL CITATIONS | 8 |
| WORKS AS AUTHOR | 2 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1978 |
| LATEST PUBLICATION YEAR | 1980 |
| H-INDEX | 2 |
Lactation and fertility in Rural Bangladesh
Analysis of data from various phases of a study of post-partum amenorrhoea in Bangladesh illustrated good aggregate consistency of response on menstrual status, but less individual consistency on duration of post-partum amenorrhoea. Using life table techniques, the median duration of amenorrhoea was calculated as 19.9 months for women with births between February and September 1974. There were substantial seasonal variations in duration, with the…
Dynamics of some special populations with NRR = 1
We discuss two special cases of population dynamics with changing vital rates subject to the constraint NRR = I and consider the specifics of ergodicity and stationarity. By restricting the number of age groups to two, we can make explicit the way weak ergodicity works. When mortality is constant and the period NRR = I, a life-table stationary population eventually results; everything of demographic interest (except age-specific fertility and the…
Lactation and fertility in Rural Bangladesh
Analysis of data from various phases of a study of post-partum amenorrhoea in Bangladesh illustrated good aggregate consistency of response on menstrual status, but less individual consistency on duration of post-partum amenorrhoea. Using life table techniques, the median duration of amenorrhoea was calculated as 19.9 months for women with births between February and September 1974. There were substantial seasonal variations in duration, with the…
Dynamics of some special populations with NRR = 1
We discuss two special cases of population dynamics with changing vital rates subject to the constraint NRR = I and consider the specifics of ergodicity and stationarity. By restricting the number of age groups to two, we can make explicit the way weak ergodicity works. When mortality is constant and the period NRR = I, a life-table stationary population eventually results; everything of demographic interest (except age-specific fertility and the…
Dynamics of some special populations with NRR = 1
We discuss two special cases of population dynamics with changing vital rates subject to the constraint NRR = I and consider the specifics of ergodicity and stationarity. By restricting the number of age groups to two, we can make explicit the way weak ergodicity works. When mortality is constant and the period NRR = I, a life-table stationary population eventually results; everything of demographic interest (except age-specific fertility and the…
Lactation and fertility in Rural Bangladesh
Analysis of data from various phases of a study of post-partum amenorrhoea in Bangladesh illustrated good aggregate consistency of response on menstrual status, but less individual consistency on duration of post-partum amenorrhoea. Using life table techniques, the median duration of amenorrhoea was calculated as 19.9 months for women with births between February and September 1974. There were substantial seasonal variations in duration, with the…
Demography (2 works) · Advanced Mathematical Theories (1 work) · Amenorrhea (1 work) · Biology (1 work) · Child Nutrition and Water Access (1 work) · Confidence interval (1 work) · Demographic Trends and Gender Preferences (1 work) · Demography (1 work) · Differential Equations and Boundary Problems (1 work) · Duration (music) (1 work)