170 research outputs found
Continuum Moment Equations on the Lattice
An analysis is given as to why one can not directly evaluate continuum moment
equations, i.e., equations involving powers of the position variable times
charge, current, or energy/momentum operators, on the lattice. I examine two
cases: a three point function evaluation of the nucleon magnetic moment and a
four point function (charge overlap) evaluation of the pseudoscalar charge
radius.Comment: 9 pages; 1 ps figur
Livestock production in Iowa as related to hay and pasture
Iowa farmers have been growing too much corn. Iowa farm land simply will not stand as large a corn acreage as was devoted to it just prior to 1934. This conclusion is borne out by both the research* of the Agricultural Experiment Station and by estimates made by farmers in their County Land Use Planning reports.**
But if less corn is grown, what effect will this change in crops have upon the kinds and numbers of livestock produced?
Ever since the AAA started its first program in the Corn Belt, one of the questions uppermost in the minds of both farmers and AAA planners has been: What will less corn and more grass do to hog, beef and dairy production? Within the Corn Belt farmers have been concerned chiefly about the influence of less corn upon hog supplies. Will a soil conservation program with its reduction of soil depleting crops hold hog numbers sufficiently in check to avoid a recurrence of large surpluses and low hog prices? Outside of the Corn Belt some apprehension has been expressed by dairy and cattle interests. They ask: “Will not the curtailment in concentrates and the rise in roughages promoted by the AAA programs shrink sow herds and add to the number of cows that are kept on Corn Belt farms?
Stabilizing corn supplies by storage
Farmers, acting as individuals, ordinarily carry over some of their surplus corn from big crop years to small crop years. This storage has had the effect of reducing fluctuations in corn supplies, on the average, by one-fifth.
The best place to store the surplus corn from big crops is right on the farm where it was grown; The costs of this storage average about 3 cents per bushel per year
Differences in Iowa farms and their significance in the planning of agricultural programs
This bulletin reports the results of a study designed to measure the variations in cropping and livestock systems within the type·of-farming areas of Iowa.
The national agricultural adjustment programs of recent years have recognized the variations between types of farming in different regions. The differences between farming systems within regions have received only limited recognition. Some of the shortcomings of the current agricultural programs have been attributed to their failure to make adequate allowance for individual farm variations
Electric Polarizability of Neutral Hadrons from Lattice QCD
By simulating a uniform electric field on a lattice and measuring the change
in the rest mass, we calculate the electric polarizability of neutral mesons
and baryons using the methods of quenched lattice QCD. Specifically, we measure
the electric polarizability coefficient from the quadratic response to the
electric field for 10 particles: the vector mesons and ; the
octet baryons n, , , , and ;
and the decouplet baryons , , and .
Independent calculations using two fermion actions were done for consistency
and comparison purposes. One calculation uses Wilson fermions with a lattice
spacing of fm. The other uses tadpole improved L\"usher-Weiss gauge
fields and clover quark action with a lattice spacing fm. Our results
for neutron electric polarizability are compared to experiment.Comment: 25 pages, 20 figure
Relation of Variations in the Human Factor to Financial Returns in Farming
This archival publication may not reflect current scientific knowledge or recommendations. Current information available from University of Minnesota Agricultural Experiment Station: http://www.maes.umn.edu
A retrospective comparative outcome analysis following systemic therapy in Mycosis fungoides and Sezary syndrome
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/134845/1/ajh24564_am.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/134845/2/ajh24564.pd
The lowa farmer and world war II
World War II is the biggest fact in the Iowa farm situation. Though Iowa is far removed from air bombing and submarine torpedoing, it is on the battle front so far as economic and social effects of the war are concerned. Iowa’s commercial agriculture underwent terrific strain during and following World War I, and the pressures arising out of World War II promise to be similar, although less severe.
It is the purpose of this report to estimate what some of these pressures will be. An understanding of the social and economic forces at work is necessary before plans can be made and action taken to ease the shock of war. The experience of the earlier war helps us to understand these forces, but that experience must be interpreted in light of the changed situation today
and Pseudoscalar Form Factors from Lattice QCD
The form factor is obtained from a quenched
lattice QCD calculation of the pseudoscalar form factor of the
proton with pion pole dominance. We find that fitted with the
monopole form agrees well with the Goldberger-Treiman relation and is much
preferred over the dipole form. The monopole mass is determined to be which shows that is rather soft. The
extrapolated coupling constant is quite
consistent with the phenomenological values. We also compare
with the axial form factor to check the pion dominance in the
induced pseudoscalar form factor vis \`{a} vis chiral Ward identity.Comment: 8 pages of text plus 4 postscript figures (128 kbytes
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