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Tion Vector

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Journal Article
Demography (1967) 4 (1): 1–18.
Published: 01 March 1967
... a los vectores de migración neta en la representación de corrientes migratorias entre áreas geogrdficas. Average Distance Population Center Migration Stream Resultant Vector Tion Vector References 1 See, for example, Russell B. Adams, Population Mobility in the Upper Midwest...
Journal Article
Demography (1967) 4 (2): 838–842.
Published: 01 June 1967
... as reci.procally influencing each other. Let us assume that the states of the sys- tem represent areas. In that case, the probabilities of change represent migra- tion. Now we can introduce the special features of the main program. Consider a distribution vector m(t), defined over these six areas...
Journal Article
Demography (1971) 8 (4): 441–450.
Published: 01 November 1971
... interesting u vectors, we may get as many linear characterizations of the projection devia- tion vector XT - eT as we want, and they all hold true simultaneously with probability approximately fJ. Consider some examples. Let the (m + I)-dimensional unit vectors be 8.0, , a With u = ai, the inequality is...
Journal Article
Demography (2005) 42 (3): 537–558.
Published: 01 August 2005
...- ules. We develop EB methods that treat schedules as vectors and use adaptive neighborhoods to keep estimates appropriately local. This method estimates demographic rates for local subpopula- tions by borrowing strength not only from similar individuals elsewhere but also from other groups in the same...
Journal Article
Demography (1980) 17 (4): 413–427.
Published: 01 November 1980
..., Draper and Smith, 1966.) In its correlation form, the estimate of B is given by B = (X'X)-IX'Y (3) with (X'X) being the zero-order correla- tion matrix for the independent variables, and (X'Y) the vector of zero-order corre- lations between each of the independent variables and the dependent variable...
Journal Article
Demography (1970) 7 (3): 341–348.
Published: 01 August 1970
..., Y2, denote the num- bers of persons in successive n year age groups at two points in time n years separated, then 1. GENERALIZED LESLIE MATRICES In the discrete formulation of stable population theory the age distribution of a population at any given time is repre- sented by a vector whose components...
Journal Article
Demography (1976) 13 (2): 287–290.
Published: 01 May 1976
...- plications, namely, multiregionallife table construction. In this particular appli- cation, increments are due to in-migration and decrements result from out-migra- tion. THE GENERAL MODEL IN MATRIX FORM Schoen's three sets of algebraic equa- tions for the linear model [equations (1), (2), and (4) in his...
Journal Article
Demography (1969) 6 (3): 287–299.
Published: 01 August 1969
... corresponding first element. The column vector thus ob- tained yields the proportionate age com- position corresponding to the end of the stabilized cycle. To get the asymptotic age distribu- tions at the end of the different periods within the stabilized cycle, the follow- ing products were calculated: 8(1...
Journal Article
Demography (1969) 6 (3): 261–269.
Published: 01 August 1969
... stable vector {K l } is any column of M', say the first, expressed in per person terms: (4) m (I) 11 m (I) 21 m (I) 18,1 1{Kd where {Kll is the stable age distribu- tion expressed as fractions of the total, r is the intrinsic rate of natural increase, and Q is the stable equivalent which we are seeking...
Journal Article
Demography (1968) 5 (1): 439–442.
Published: 01 March 1968
... Structure," Demography, III (1966) 537-44. 2 Cf. Hannes Hyrennius, "Population Growth and Replacement," in Philip M. Hauser and Otis Dudley Duncan (eds The Study of Popula- tion (Chicago: University of Chicago Press, 1959), pp. 472-85; Hannes Hyrennius, "La me- sure de la reproduction et de l'accroissement...
Journal Article
Demography (1966) 3 (2): 537–544.
Published: 01 June 1966
... interregional population. This allocation structure we shall define as the stable interregional age structure and de- note it by the vector v. Therefore, in addi- tion to equation (13), we have the follow- ing relationship at stability: (14) The M ultiregional Matrix GrowthOperator 543 Returning to our two...
Journal Article
Demography (1967) 4 (2): 515–531.
Published: 01 June 1967
... illustrates such a method. Since the results are largely unsatisfactory, a large portionof the paper is devoted to an analysis of the condi- tions leading to thepoor performance of themethod, by evaluating, in particular, alternative estimators and by considering the possibility of "data smoothing." Efforts...
Journal Article
Demography (2003) 40 (4): 621–635.
Published: 01 November 2003
... declines of any length, the product of the two factors yields momentum values that closely agree with the results of popula- tion projections. The QH model can examine monotonic transitions between any two sets of constant vital rates. As a generalization of the fixed-rate stable model, it has great...
Journal Article
Demography (1977) 14 (4): 593.
Published: 01 November 1977
... 85721 REFERENCES the calculations. This necessitates the use of an additional superscript and leads to the matrix formulation we proposed, i.e., the use of I and L matrices instead of {I} and {L} vectors. This is a subtle point and perhaps needs some elaboration. A way of focusing on the crux of the...
Journal Article
Demography (1976) 13 (3): 369–379.
Published: 01 August 1976
... Schmitt and Crosetti (1954), multiple regression has become a valuable statis- tical tool for making subarea population estimates. Despite the theoretical prob- lems involved with using the ratio-correla- tion method, which were pointed out by Namboodiri (1972), the ratio-correlation method is the most...
Journal Article
Demography (1976) 13 (1): 65–82.
Published: 01 February 1976
... practice lapse because of the as- surance of an abortion backup. A special opportunity to study this ques- tion for the United States is furnished by the experience of New York City resi- dents during the two years (July 1, 1970 to June 30, 1972) directly following liberalization of New York State's abor...
Journal Article
Demography (1972) 9 (3): 443–453.
Published: 01 August 1972
...., and R. C. Schmitt. 1956. A method of estimating the intercensal popula- tion of counties. Journal of the American Statistical Association 51 :587-590. Subnatlonal Population Estimation where W = the 1 X m vector of W.'s, W' = the transpose of W, and A = the m X m matrix of A.t's defined above. If we...
Journal Article
Demography (1982) 19 (3): 291–299.
Published: 01 August 1982
...., 1982a) that the omission of such variables can result in serious specifica- tion errors. Parameter estimates may be biased, significance levels inflated, and incorrect inference made as to the dy- namic structure of the process. The methodological task must be to devise a framework within which these...
Journal Article
Demography (1970) 7 (1): 93–120.
Published: 01 February 1970
... births at time t ean be expressed as the produet of an index of generation repro- duetivity and the weighted average of the number of births in the parental genera- tion; the index of reproduetivity combines the survival experienee of each parental cohort from birth to age a at time t with 93 94...
Journal Article
Demography (1976) 13 (4): 521–539.
Published: 01 November 1976
... changes in interregional migration rates. (AI - B)p = [AI - (M + G)]p = 0. (7) Clearly, we also have where t' = (I, I, , I) is a row vector of r components. In scalar notations, equa- tions (7) and (8) become Changes in Natural Growth Rates Since p is the right eigenvector of B associated with the...