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 $\rho^0$ and $K^{*0}$; the octet baryons n, $\Sigma^0$, $\Lambda_{o}^{0}$, $\Lambda_{s}^{0}$, and $\Xi^0$; and the decouplet baryons $\Delta^0$, $\Sigma^{*0}$, and $\Xi^{*0}$. Independent calculations using two fermion actions were done for consistency and comparison purposes. One calculation uses Wilson fermions with a lattice spacing of $a=0.10$fm. The other uses tadpole improved L\"usher-Weiss gauge fields and clover quark action with a lattice spacing $a=0.17$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

πNN\pi NN and Pseudoscalar Form Factors from Lattice QCD

The $\pi NN$ form factor $g_{\pi NN}(q^2)$ is obtained from a quenched lattice QCD calculation of the pseudoscalar form factor $g_P(q^2)$ of the proton with pion pole dominance. We find that $g_{\pi NN}(q^2)$ 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 $0.75 \pm 0.14 {\rm GeV}$ which shows that $g_{\pi NN}(q^2)$ is rather soft. The extrapolated $\pi N$ coupling constant $g_{\pi NN} = 12.7 \pm 2.4$ is quite consistent with the phenomenological values. We also compare $g_{\pi NN}(q^2)$ with the axial form factor $g_A(q^2)$ to check the pion dominance in the induced pseudoscalar form factor $h_A(q^2)$ vis \`{a} vis chiral Ward identity.Comment: 8 pages of text plus 4 postscript figures (128 kbytes