نتایج جستجو برای: mode of subsistence
تعداد نتایج: 21182508 فیلتر نتایج به سال:
most impact tests are carried out on specimens with specific stacking sequence and dimensions to meet standard and experimental limitations. the damaged areas and the resulted reduction in the strength values of specimens may not agree very well with those of real application. in this paper an attempt is made to study the variation in the size of damaged areas due to varying the dimension of te...
This paper examines the development of ten villages along the Mekong River in Laos during the period 1994 to 2001. These villages have been sampled two times, the first in the period 1994-1997 and the second in 2001. I look at changes in production, economic conditions, and the general well-being of the households. General trends points to a strengthening of the Laotian economy. The governments...
abstract ion selective electrodes (ises) are electrochemical sensors that respond selectivity to the activity of ionic species. an ion-selective electrode is an electrochemical device that uses a thin selective membrane or film as the recognition element, and is an electrochemical half-cell equivalent to other half-cells of the zeroth (inert metal in a redox electrolyte). in common methods o...
This paper investigates the impacts of information and communication technologies on daily time allocation to various activities and travel, and on modal split for a substantially large sample of 1480 persons interviewed repeatedly. Employing structural equations we explore the relationships among different activity and travel time use indicators and daily frequencies of travel mode use. Using ...
Maximizing expected utility over a lifetime leads one who has constant relative risk aversion and faces random-walk securities returns to be "myopic" and hold the same fraction of portfolio in equities early and late in life--a defiance of folk wisdom and casual introspection. By assuming one needs to assure at retirement a minimum ("subsistence") level of wealth, the present analysis deduces a...
Isotopic and molecular analysis on human, fauna and pottery remains can provide valuable new insights into the diets and subsistence practices of prehistoric populations. These are crucial to elucidate the resilience of social-ecological systems to cultural and environmental change. Bulk collagen carbon and nitrogen isotopic analysis of 82 human individuals from mid to late Holocene Brazilian a...
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