Multistate Life Tables: Movement versus Transition Perspectives

1980 ◽  
Vol 12 (5) ◽  
pp. 533-562 ◽  
Author(s):  
J Ledent

This paper attempts to present a comprehensive view of the methodological and empirical aspects involved in the construction of increment–decrement life tables, that is life tables which allow entries into (increments) as well as withdrawals from (decrements) alternative states. The first principal part of the paper, section 2, presents a theoretical exposition of such tables, paralleling that of the ordinary life table, and discusses various issues raised by the conceptualization of multistate life-table functions. The second principal part, section 3, contrasts the two alternative approaches to the applied calculation of such tables. On the one hand, the movement approach, which views interstate transfers as events (such as deaths or births), requires data in the form of occurrence/exposure rates; on the other hand, the transition approach, which regards such transfers as the results of a change in an individual's state of presence between two points in time, uses data in the form of survivorship proportions.


Author(s):  
Jerônimo Oliveira Muniz

The mslt command calculates the functions of a multistate life table and plots a graph of conditional and unconditional life expectancies by time. The command provides linear and exponential solutions to estimate the number of individuals, transitions, probabilities, person-years, and years of life in a given cohort and state of occupancy. The input data are time-specific transition rates (or survivorship proportions) between nonabsorbing and at most one absorbing state. In addition to the mean age at transfer between states, mslt calculates the following summary measures: the mean age, the probability of dying, the average duration, and the proportion of life spent in a specific state.



2019 ◽  
Vol 32 (4) ◽  
pp. 449-471
Author(s):  
Ulrike Jacob ◽  
Oliver A. Brust

ArgumentRecurring economic crises, like the one of 2007-2008, led to criticism of economic research and a demand to develop new strategies to avoid them. Standard economic theories use conventional approaches to deal with economic challenges, heterodox theories try to develop alternatives with which to face them. It remains unclear whether the 2007-2008 crisis led to a change in economic research as well as to a consideration of alternative approaches. We used co-word analysis to map the structure of economic research in Germany between 2005 and 2014. Core topics within economic research, such as “market” or “production” hardly shift and can be linked to standard economic theories. Peripheral topics such as “inequality” or “unemployment” show greater dynamics. However, only a few of these topics can be linked to heterodox approaches. Certain changes have occurred in reaction to the 2007-2008 crisis. However, the unchanged importance of standard economic topics raises the question whether these changes are sufficient to face coming economic challenges.



2013 ◽  
Vol 28 (25) ◽  
pp. 1350126 ◽  
Author(s):  
MIKHAIL Z. IOFA

Solutions of geodesic equations describing propagation of gravitons in the bulk are studied in a cosmological model with one extra dimension. Brane with matter is embedded in the bulk. It is shown that in the period of early cosmology gravitons emitted from the brane to the bulk under certain conditions can return back to the brane. The model is discussed in two alternative approaches: (i) brane with static metric moving in the AdS space, and (ii) brane located at a fixed position in extra dimension with nonstatic metric. Transformation of coordinates from the one picture to another is performed. In both approaches, conditions for gravitons emitted to the bulk to come back to the brane are found.



The importance of the investigation here entered into,—inasmuch as it applies to most of the operations of nature as well as art,—appears so manifest, that we shall not recapitulate what the author advances on that subject. Before he proceeds to the detail of his experiments for the purpose of computing the emissions of heat from various bodies under a variety of circumstances, he finds it necessary to premise a minute description of the principal part of the apparatus he contrived for his purpose. This instrument consists of a hollow cylindrical vessel of brass, four inches long, and as many in diameter. It is closed at both ends; but has at one end a cylindrical neck about eight-tenths of an inch in diameter, by which it is occasionally filled with water of different temperatures, and through which also a thermometer, constructed for the purpose, is occasionally introduced, in order to ascertain the changes of temperature in the fluid. As it was in the first instance only meant to observe the quantity of heat that escapes through the sides of the vessel, two boxes were contrived, filled and covered with non-conducting substances, such as eiderdown, fur, &c., which were fitted to the two ends or flat surfaces of the cylinder. Six of these instruments, with proper stands, and auxiliary implements of obvious construction, were prepared for the sake of comparative experiments. A previous trial was made with two of the cylinders, the vertical polished sides of the one being naked, and those of the other covered with one thickness of fine white Irish linen, strained over the metallic surface. Here it was found, contrary to expectation, that in a certain space of time the covered cylinder had lost considerably more heat than the naked one.



Author(s):  
Vadim Markovich Rozin

The article covers the two main topics: the characteristics of three key stages of studying art by the author, and a brief summary of the original concept of art proposed as a result of this study. Leaning on the concept of art of L. S. Vygotsky, the author offers the own approach towards studying art. Firstly, art is viewed in comparison with dreams, communication and play, analyzing the role of these processes and semiotic means played in relation to ordinary life. The article introduces the idea of artistic reality, which manifests as a continuation of ordinary life, allowing to realize in a semiotic form the desires (psychic programs) that are blocked in ordinary life; and such realization suggest living through the events set by the specific semiosis of art and conditionality. Secondly, the author describes the results of the genesis of art. In the course of analysis, emphasis is place on the three central topics:: 1) establishment of the semiosis of art based on the semiosis formed in ordinary life; 2) formation of recreation sphere, within which art is being formed; 3) philosophical “conceptualization” of art in the antique culture, which characterizes art as an independent sphere of life, unlike other spheres. Thirdly, art and artistic reality are viewed as a peculiar type of communication. The author believes that both, the artist (writer, composer) and the viewer (reader, listener), on the one hand, create and reconstruct artistic reality (and there is not always a coincidence), while on the other hand, to one or another extent, they take into account each other's communicative abilities and competencies. The conclusion is made that art is determined by conceptual space, the coordinates of which indicate the representations of artistic reality, artistic communication, life patterns in art, conceptualization of art and its development.



Author(s):  
Jose M Pavia ◽  
Natalia Salazar ◽  
Josep Lledo

Life tables have a substantial influence on both public pension systems andlife insurance policies. National statistical agencies construct life tables fromhypotheses death rate estimates to the (mx aggregated ), or death figures probabilities of demographic (q x ), after applying events (deaths, variousmigrations and births). The use of big data has become extensive acrossmany disciplines, including population statistics. We take advantage of thisfact to create new (more unrestricted) mortality estimators within the familyof period-based estimators, in particular, when the exposed-to-riskpopulation is computed through mid-year population estimates. We useactual data of the Spanish population to explore, by exploiting the detailedmicrodata of births, deaths and migrations (in total, more than 186 milliondemographic events), the effects that different assumptions have oncalculating death probabilities. We also analyse their impact on a sample ofinsurance product. Our results reveal the need to include granular data,including the exact birthdate of each person, when computing period mid-year life tables.



Author(s):  
Edward G. Goetz

This chapter provides an overview of two different ways of working towards racial justice and regional equity. The two approaches are integration efforts on the one hand and community development efforts on the other. The tension between these two approaches is described as a conflict among groups that are generally allied on issues of social justice. It is argued that this debate is a tension within a race-conscious policy alliance, and represents a disagreement about how best to achieve the common goal of racial equity.



Author(s):  
Henry Wilbraham

The object of this paper is to give a brief exposition of the different possible methods or classes of methods of equitably dividing the net profits of a Mutual Life Assurance Office among the members. By an equitable division must be understood one which is fair not only between persons of different ages entering the Office at the same time, but also between persons entering the Office at different epochs of its existence,–one from which the members of different ages will, relatively to one another, receive the same benefit from the profits during the earlier and growing years of the Office, and during years when the amount of its business is declining, as during its stationary period. I assume the premiums actually paid to be composed of the net premium calculated from a correct life table, and of a charge of 25 per cent. on the net premium added to guard against unfavourable contingencies, and that this additional charge is really the source of all the profit divisible among the members; or at least, that whatever profits arise from any other source may be fairly apportioned in the same proportions as appear equitable on the supposition that the charge is the sole source of profits. The addition to the premiums for defraying the expenses of the Office, for the sake of simplicity, I leave out of account. In consideration of the payments of the successive net premiums, the assured is guaranteed a sum at death such that the present prospective value of that sum is equal to the present value of the successive net premiums. Similarly, in consideration of the successive charges on the premiums, he should have the prospect of receiving a sum or sums either at death or at any times before that; not guaranteed, it is true, to any fixed amount, but variable with the circumstances of the Society, such that the present value of such sums or bonuses shall be equal to the present value of the successive charges. That this equation between the present values ought to subsist is as clear in the case of the charges and bonuses as in that of the net premiums and sums assured. If the system of division of profits be such that this equation always subsist, it must be fair as respects each member; and any Office adopting a system in which it does not subsist is committing as great an injustice towards its members as one which calculates the premiums on false life tables.





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