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This paper applies the waiting-time regression methods of Olsen and Wolpin (1983) to an analysis of fertility. A utility maximizing model is set up and used to provide some guidance for an empirical analysis. The data are from an experimental guaranteed job program, the Youth Incentive Entitlement Pilot Project, aimed at young women 16 to 20 years old, from poverty-level families, and not yet high school graduates. The waiting-time regression method of estimation permits the youth in question to be used as her own control revealing how eligibility for the jobs program changes the durations of periods between live-birth conceptions. 3890 women surveyed had 1 birth, 429 had 2, 112 had 3, 26 had 4, and 7 had 5. Without this person specific control described here, the most important factors affecting fertility are number of siblings (negative effect), labor market attachment by parents, especially the father, and the presence of the natural father. With the person specific control, the results predicted from economic theory do emerge: even adolescent and young women consider the economic consequences of fertility reflected in effects of fertility when wages are high in favor of fertility with lower wages. Post program effects (taking place after youths lose eligibility for the program) are a rather rapid making up for foregone fertility, reducing likelihood of net reductions of total fertility. 相似文献
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Robert J. Farquharson Oscar J. Cacho John D. Mullen Graeme D. Schwenke 《Agricultural Economics》2008,38(2):181-192
Soil fertility decline and soil management for crop production are important economic issues for grain growers in north-eastern Australia. In that region, there is evidence of soil fertility decline which is attributed to past crop management practices. The questions addressed in this article are first, whether components of soil fertility can be improved by better management and second, by how much soil fertility would change. Soil fertility for crop production is considered in terms of soil organic carbon and nitrogen. A stochastic dynamic economic analysis of soil fertility management for wheat production is presented. A sequential analysis of first deriving the optimal nitrogen stock and application rates is followed by an assessment of tillage, stubble, and fertilizer strategies to obtain an optimal level of soil organic carbon. The recommended management practices are consistent with emerging management trends in the region. The derivation of optimal levels of soil fertility for agricultural purposes has other policy implications, which we discuss. 相似文献
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Using survey and archival data for 180 not-for-profit aged care organisations, we find that interactive use of performance measurement systems positively affects the organisations’ revenue growth, while the diagnostic use negatively affects revenue growth. We also find that organisational culture, specifically attention to detail, innovation and respect for people, moderates these effects. Our findings have implications for the literature in terms of understanding the combinatorial effects of formal management control and culture on organisational performance. The findings also have practical implications for designing performance measurement systems and developing organisational cultures, to create an internal environment effective in enabling revenue growth. 相似文献
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Jesusa C. Beltran Benedict White Michael Burton Graeme J. Doole David J. Pannell 《Agricultural Economics》2013,44(1):45-55
This study identifies farm‐specific and market factors affecting the adoption of herbicides and the level of herbicide use by rice farmers in the Philippines. This requires the application of a modified version of Heckman's two‐step method to estimate a random‐effects double‐hurdle model for unbalanced panel data. The age of the farmer, household size, and irrigation use are significant determinants of the decision of farmers to adopt herbicides as an alternative to manual weeding, while economic variables such as the price of herbicides, total income, and access to credit determine the level of herbicide use. Determinants of both adoption and level are land ownership, farm area, and the method of crop establishment. These results are potentially relevant when designing policies to reduce excessive herbicide use or to encourage the adoption of alternative weed control methods such as integrated weed management. 相似文献
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Optimal surveillance against foot‐and‐mouth disease: the case of bulk milk testing in Australia 下载免费PDF全文
Tom Kompas Pham Van Ha Hoa Thi Minh Nguyen Iain East Sharon Roche Graeme Garner 《The Australian journal of agricultural and resource economics》2017,61(4):515-538
Previous foot‐and‐mouth disease (FMD) outbreaks and simulation‐based analyses suggest substantial payoffs from detecting an incursion early. However, no economic measures for early detection have been analysed in an optimising framework. We investigate the use of bulk milk testing (BMT) for active surveillance against an FMD incursion in Australia. We find that BMT can be justified, but only when the FMD entry probability is sufficiently high or the cost of BMT is low. However, BMT is well suited for post‐outbreak surveillance, to shorten the length of time and size of an epidemic and to facilitate an earlier return to market. 相似文献
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The transfer component of training evaluation was examined in a study conducted in 1996. ‘Transfer’ is the evidence that what was learned is actually being used on the job for which it was intended. The study, through a survey technique, examined what organisations are doing to evaluate the transfer of training (as described by the Kirkpatrick taxonomy of the four levels of training evaluation). In addition, training and support strategies which are judged to be the most effective in enhancing transfer were identified. 相似文献
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