29,418 research outputs found
Determinants of Financial Performance of Commercial Dairy Farms.
Data from the 1993 Farm Costs and Returns Survey were used in a multi-variate analysis framework to determine factors associated with the financial performance of commercial dairy farm operations. Statistical equivalency tests revealed regional differences in the way extensive indebtedness, size of operation, and labor cost affect net farm incomes. Regional differences were also found in terms of how milk production per cow, per-unit cost of purchased feed, and level of adoption of capital intensive technologies affect per-unit returns. Examination of the variation in the net farm income of commercial dairy farms using the method of coefficients of separate determination identified the size of the operation, regardless of the location of the farm business, as the factor contributing the most to the variability in net farm income. On a per-unit-of-returns basis, factors found most important in explaining the variation in net returns per hundredweight of milk sold were cow's productivity, and per-cow forage production and purchased feed costs.financial performance, net farm income, technological adoption, Lorenz curve, Gini coefficient, Agricultural Finance, Livestock Production/Industries,
SUCCESSION IN FAMILY FARM BUSINESS: EMPIRICAL EVIDENCE FROM THE U.S. FARM SECTOR
Survival of many family farms is dependent on successful intergenerational transfer. Given the importance of succession in the farm sector, the purpose of this paper is to examine factors that are likely to influence succession decisions on U.S. farms. The paper uses 2001 ARMS data and a multinomial Logit (MNL) regression to estimate family succession, non-family succession, and farm exit decisions of farm households in the U.S. Model choice and specification issues are discussed. Results indicate that operator's education, household wealth, growth in farm size, and farm debt are important factors that determine succession decisions. Additionally, farm specialization is taken into consideration when farm operators make their succession plans.Farm Management,
Asymptotic description of solitary wave trains in fully nonlinear shallow-water theory
We derive an asymptotic formula for the amplitude distribution in a fully
nonlinear shallow-water solitary wave train which is formed as the long-time
outcome of the initial-value problem for the Su-Gardner (or one-dimensional
Green-Naghdi) system. Our analysis is based on the properties of the
characteristics of the associated Whitham modulation system which describes an
intermediate "undular bore" stage of the evolution. The resulting formula
represents a "non-integrable" analogue of the well-known semi-classical
distribution for the Korteweg-de Vries equation, which is usually obtained
through the inverse scattering transform. Our analytical results are shown to
agree with the results of direct numerical simulations of the Su-Gardner
system. Our analysis can be generalised to other weakly dispersive, fully
nonlinear systems which are not necessarily completely integrable.Comment: 25 pages, 7 figure
Experimental and analytical investigation of the fracture processes of boron/aluminum laminates containing notches
Experimental results for five laminate orientations of boron/aluminum composites containing either circular holes or crack-like slits are presented. Specimen stress-strain behavior, stress at first fiber failure, and ultimate strength were determined. Radiographs were used to monitor the fracture process. The specimens were analyzed with a three-dimensional elastic-elastic finite-element model. The first fiber failures in notched specimens with laminate orientation occurred at or very near the specimen ultimate strength. For notched unidirectional specimens, the first fiber failure occurred at approximately one-half of the specimen ultimate strength. Acoustic emission events correlated with fiber breaks in unidirectional composites, but did not for other laminates. Circular holes and crack-like slits of the same characteristic length were found to produce approximately the same strength reduction. The predicted stress-strain responses and stress at first fiber failure compared very well with test data for laminates containing 0 deg fibers
The thermodynamic limit of the Whitham equations
The infinite-genus limit of the KdV-Whitham equations is derived. The limit
involves special scaling for the associated spectral surface such that the
integrated density of states remains finite as (the
thermodynamic type limit). The limiting integro-differential system describes
slow evolution of the density of states and can be regarded as the kinetic
equation for a soliton gas
A unified approach to testing for and against a set of linear inequality constraints in the product multinomial setting
AbstractA problem that is frequently encountered in statistics concerns testing for equality of multiple probability vectors corresponding to independent multinomials against an alternative they are not equal. In applications where an assumption of some type of stochastic ordering is reasonable, it is desirable to test for equality against this more restrictive alternative. Similar problems have been considered heretofore using the likelihood ratio approach. This paper aims to generalize the existing results and provide a unified technique for testing for and against a set of linear inequality constraints placed upon on any r(r≥1) probability vectors corresponding to r independent multinomials. The paper shows how to compute the maximum likelihood estimates under all hypotheses of interest and obtains the limiting distributions of the likelihood ratio test statistics. These limiting distributions are of chi bar square type and the expression of the weighting values is given. To illustrate our theoretical results, we use a real life data set to test against second-order stochastic ordering
Introduction to Sociology (Dalton State College)
This Grants Collection for Introduction to Sociology was created under a Round Three ALG Textbook Transformation Grant.
Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.
Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials: Linked Syllabus Initial Proposal Final Reporthttps://oer.galileo.usg.edu/psychology-collections/1005/thumbnail.jp
A methodology to assess the economic impact of power storage technologies
We present a methodology for assessing the economic impact of power storage technologies. The methodology is founded on classical approaches to the optimal stopping of stochastic processes but involves an innovation that circumvents the need to,
ex ante
, identify the form of a driving process and works directly on observed data, avoiding model risks. Power storage is regarded as a complement to the intermittent output of renewable energy generators and is therefore important in contributing to the reduction of carbon-intensive power generation. Our aim is to present a methodology suitable for use by policy makers that is simple to maintain, adaptable to different technologies and easy to interpret. The methodology has benefits over current techniques and is able to value, by identifying a viable optimal operational strategy, a conceived storage facility based on compressed air technology operating in the UK.
This article is part of the themed issue ‘Energy management: flexibility, risk and optimization’.</jats:p
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