Endogenous Life‐Cycle Housing Investment and Portfolio Allocation

2018 ◽  
Vol 51 (4) ◽  
pp. 991-1019 ◽  
Author(s):  
DENIS PELLETIER ◽  
CENGIZ TUNC
Keyword(s):  
Life Cycle ◽  
Portfolio Allocation ◽  
Housing Investment

Patterns and Determinants of Wealth Inequality in Late-Nineteenth-Century Ontario

2001 ◽  
Vol 25 (3) ◽  
pp. 347-380
Author(s):  
Livio Di Matteo
Keyword(s):  
Nineteenth Century ◽  
Life Cycle ◽  
Wealth Inequality ◽  
Portfolio Allocation ◽  
Late Nineteenth Century ◽  
Age Composition ◽  
Type Curve ◽  
Economic Process ◽  
Late Nineteenth ◽  
Allocation Decisions

This article shows that late-nineteenth-century wealth inequality was associated with rising wealth levels supporting the existence of a Kuznets-type curve, but this curve is not unconditional.The tendency of wealth inequality to vary with age means that wealth inequality was also a function of the changing age composition of the population and may have been the result of portfolio allocation decisions across the life cycle. Canada's population “aged” during the late nineteenth century, with the proportion of population under age 20 dropping from 53% in 1871 to 43% by 1911. The general aging of the population could have increased inequality in both wealth and income. These results follow recent work by Jeffrey Williamson (1998), who argues that Kuznets curves are not unconditional. In other words, as the results of this article confirm, wealth inequality is the outcome of a complex economic process, not a single determinant cause.

Ultrastructural analysis of “Sensory” surface nerve endings and “putative” neurotransmitter sites in Schistosoma mansoni Miracidia

1989 ◽  
Vol 47 ◽  
pp. 962-963
Author(s):  
Betty Ruth Jones ◽  
Steve Chi-Tang Pan
Keyword(s):  
Nervous System ◽  
Life Cycle ◽  
Schistosoma Mansoni ◽  
Snail Host ◽  
Complex Life Cycle ◽  
Rational Approach ◽  
Effective Control ◽  
The Social ◽  
Social And Economic Development ◽  
Basic Biology

INTRODUCTION: Schistosomiasis has been described as “one of the most devastating diseases of mankind, second only to malaria in its deleterious effects on the social and economic development of populations in many warm areas of the world.” The disease is worldwide and is probably spreading faster and becoming more intense than the overall research efforts designed to provide the basis for countering it. Moreover, there are indications that the development of water resources and the demands for increasing cultivation and food in developing countries may prevent adequate control of the disease and thus the number of infections are increasing.Our knowledge of the basic biology of the parasites causing the disease is far from adequate. Such knowledge is essential if we are to develop a rational approach to the effective control of human schistosomiasis. The miracidium is the first infective stage in the complex life cycle of schistosomes. The future of the entire life cycle depends on the capacity and ability of this organism to locate and enter a suitable snail host for further development, Little is known about the nervous system of the miracidium of Schistosoma mansoni and of other trematodes. Studies indicate that miracidia contain a well developed and complex nervous system that may aid the larvae in locating and entering a susceptible snail host (Wilson, 1970; Brooker, 1972; Chernin, 1974; Pan, 1980; Mehlhorn, 1988; and Jones, 1987-1988).

Sign in / Sign up

Export Citation Format

Share Document