10,064 research outputs found
A STOCHASTIC DOMINANCE ANALYSIS OF CONTRACT GRAZING FEEDER CATTLE
Contract grazing feeder cattle is an arrangement where cattle owned by one party graze forage produced on land owned by another party. The forage producer is paid a fixed price per pound gained. Stochastic dominance analysis is used to compare contract grazing and the more traditional system in which the same individual owns both the cattle and land.Livestock Production/Industries,
Measurement Invariance, Entropy, and Probability
We show that the natural scaling of measurement for a particular problem
defines the most likely probability distribution of observations taken from
that measurement scale. Our approach extends the method of maximum entropy to
use measurement scale as a type of information constraint. We argue that a very
common measurement scale is linear at small magnitudes grading into logarithmic
at large magnitudes, leading to observations that often follow Student's
probability distribution which has a Gaussian shape for small fluctuations from
the mean and a power law shape for large fluctuations from the mean. An inverse
scaling often arises in which measures naturally grade from logarithmic to
linear as one moves from small to large magnitudes, leading to observations
that often follow a gamma probability distribution. A gamma distribution has a
power law shape for small magnitudes and an exponential shape for large
magnitudes. The two measurement scales are natural inverses connected by the
Laplace integral transform. This inversion connects the two major scaling
patterns commonly found in nature. We also show that superstatistics is a
special case of an integral transform, and thus can be understood as a
particular way in which to change the scale of measurement. Incorporating
information about measurement scale into maximum entropy provides a general
approach to the relations between measurement, information and probability
WORLD MALT AND MALTING BARLEY: COMPETITION, MARKETING, AND TRADE
Recent trends in production marketing, trade, and policies affecting world malting barley and malt sector are examined. A spatial equilibrium model of production and trade is used to assess the effects of alternative levels of supply, demand, and policy variables on composition and direction of malting barley and malt trade flows.malting barley, malt, beer, trade, spatial equilibrium, Marketing, International Relations/Trade,
The Evolution of Loyalty Intentions
The drivers of customer loyalty intentions are dynamic. What remains unclear is how these intentions evolve through the introduction and growth phases of a life cycle. Using a longitudinal study of cellular phone customers, the authors demonstrate that loyalty intentions are a function of perceived value early in the life cycle. Over time, more affective attitudes toward the brand and the relationship with the company come to mediate the effects of value on intentions. The results suggest that from the introduction to the growth stage of a life cycle, managers must adapt from improving value per se to measuring and managing relationships and brands directly
Comment on `Two-body random ensembles: from nuclear spectra to random polynomials
In PRL 85, 3773 (2000) it was suggested to use random polynomials to analyze
and understand the properties of two-body random ensembles. In this comment we
point out that for the vibron model the random polynomial is not quadratic, but
has a more general form. We make a comparison for the percentage of ground
states with L=0 in the vibron model with random interactions.Comment: 2 pages, 1 figure, Phys. Rev. Lett., in pres
Tool Selection Among Qualitative Data Reusers
This paper explores the tension between the tools that data reusers in the feld of education prefer to use when working with qualitative video data and the tools that repositories make available to data reusers. Findings from this mixed-methods study show that data reusers utilizing qualitative video data did not use repository-based tools. Rather, they valued common, widely available tools that were collaborative and easy to use.This project was made possible in part by the Institute of Museum and Library Services grant # LG-06-14-0122-14. We also acknowledge the University of Michigan Undergraduate Research Opportunity Program (UROP), which supported one of the authors.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/162592/1/Frank_etal_2020_DeepBlueA.pdfDescription of Frank_etal_2020_DeepBlueA.pdf : Main articleSEL
Effects of lateral diffusion on morphology and dynamics of a microscopic lattice-gas model of pulsed electrodeposition
The influence of nearest-neighbor diffusion on the decay of a metastable
low-coverage phase (monolayer adsorption) in a square lattice-gas model of
electrochemical metal deposition is investigated by kinetic Monte Carlo
simulations. The phase-transformation dynamics are compared to the
well-established Kolmogorov-Johnson-Mehl-Avrami theory. The phase
transformation is accelerated by diffusion, but remains in accord with the
theory for continuous nucleation up to moderate diffusion rates. At very high
diffusion rates the phase-transformation kinetic shows a crossover to
instantaneous nucleation. Then, the probability of medium-sized clusters is
reduced in favor of large clusters. Upon reversal of the supersaturation, the
adsorbate desorbs, but large clusters still tend to grow during the initial
stages of desorption. Calculation of the free energy of subcritical clusters by
enumeration of lattice animals yields a quasi-equilibrium distribution which is
in reasonable agreement with the simulation results. This is an improvement
relative to classical droplet theory, which fails to describe the
distributions, since the macroscopic surface tension is a bad approximation for
small clusters.Comment: Minor corrections and modifications. 15 pages with 10 figures.
Accepted for publication in the Journal of Chemical Physics, see
http://jcp.aip.org/jcp
âFarm School : Recalling Meaning & Memory of the Lynn Bachman School
This project tells the story of a generation, a region, and a unique educational moment in Appalachian history through a series of hand printed, hand bound, illustrated artists books. Capturing the lived experience of elders in the communities of Polk County, Tennessee and Cherokee County, North Carolina, the research expands our understanding of Appalachian education and social work before public education was introduced to the area. The project appropriately merged Dockeryâs interdisciplinary work in visual arts, art education and Appalachian Studies and expanded the scholarship on rural education. Utilizing an arts based research methodology, the research introduces the Lynn Bachman Memorial School and Home to the growing body of literature related to Appalachian Settlement Schools. Three elders were interviewed, an archives of historical and artistic images of the Bachman school was generated, and a limited edition of artistsâ books that utilize the heirloom craft of letterpress, photo transfer, and German book binding technique was created
Regular spectra in the vibron model with random interactions
The phenomenom of emerging regular spectral features from random interactions
is addressed in the context of the vibron model. A mean-field analysis links
different regions of the parameter space with definite geometric shapes. The
results that are, to a large extent, obtained in closed analytic form, provide
a clear and transparent interpretation of the high degree of order that has
been observed in numerical studies.Comment: 19 pages, 8 figures, 2 tables. Physical Review C, in pres
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