RESEARCH IN AGRICULTURAL ECONOMICS--IS ANYONE LISTENING? DISCUSSION

Research and Development/Tech Change/Emerging Technologies,

FARM PROGRAMS, PESTICIDE USE, AND SOCIAL COSTS

Environmental Economics and Policy,

The effect of friction in the hold down post spherical bearings on hold down post loads

The effect of friction at the connection of the Solid Rocket Booster (SRB) aft skirt and the mobile launch platform (MLP) hold down posts was analyzed. A simplified model of the shuttle response during the Space Shuttle Main Engine (SSME) buildup was constructed. The model included the effect of stick-slip friction for the rotation of the skirt about the spherical bearing. Current finite element models assume the joint is completely frictionless in rotation and therefore no moment is transferred between the skirt and the hold down posts. The model was partially verified against test data and preliminary parameter studies were performed. The parameter studies indicated that the coefficient of friction strongly influenced the moment on the hold down posts. The coefficient of friction had little effect on hold down post vertical loads, however. Further calibration of the model is necessary before the effect of friction on the hold down post horizontal loads can be analyzed

IMPACTS OF ALTERNATIVE FARM POLICIES ON RURAL COMMUNITIES

The purpose of this study was to describe an LP/IO model for evaluating the economic impacts of alternative farm policies on rural communities and demonstrate its capabilities by analyzing the impacts of three farm policies on a rural community in Texas. Results indicate that in the noncrop sector, two groups of industries are most affected by farm policy. The first group relates to production directly (agricultural services, banking and credit, and nondurable manufacturing) and the second group relates to households (retail trade and services). Farm policies which reduce production but increase net returns cause losses for the first group while benefitting the second group. Both groups are made worse off by farm policies which reduce agricultural production and the value of output.Agricultural and Food Policy, Community/Rural/Urban Development,

Private experiments in global governance : primary commodity roundtables and the politics of deliberation

Emerging scholarship on global governance offers ever-more detailed analyses of private regulatory regimes. These regimes aim to regulate some area of social activity without a mandate from, or participation of, states or international organizations. While there are numerous empirical studies of these regimes, the normative theoretical literature has arguably struggled to keep pace with such developments. This is unfortunate, as the proliferation of private regulatory regimes raises important issues about legitimacy in global governance. The aim of this paper is to address some of these issues by elaborating a theoretical framework that can orientate normative investigation of these schemes. It does this through turning to the idea of experimentalist governance. It is argued that experimentalism can provide an important and provocative set of insights about the processes and logics of emerging governance schemes. The critical purchase of this theory is illustrated through an application to the case of primary commodities roundtables, part of ongoing attempts by NGOs, producers, and buyers to set sustainability criteria for commodity production across a range of sectors. The idea of experimentalist governance, we argue, can lend much needed theoretical structure to debates about the normative legitimacy of private regulatory regimes

ACE Bounds; SEMs with Equilibrium Conditions

Discussion of "Instrumental Variables: An Econometrician's Perspective" by Guido W. Imbens [arXiv:1410.0163].Comment: Published in at http://dx.doi.org/10.1214/14-STS485 the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org

Measuring Producer Level Beef Cattle Alliance Financial Performance

There has been a movement toward developing production and marketing alliances in the beef cattle sector in the United States to improve communications and ultimately provide higher priced branded products consistent with consumer demand. Beef cattle producers do not employ a consistent methodology to measure the financial performance of alliance participation. Nor do they have the information to negotiate financially sustainable agreements. The concentrated packer and retail sector do not share cost and returns information beyond total business data required by public traded corporations. A methodology using cost accounting and economic analysis is described to measure return on producer's assets for an alliance agreement. This information can be used to inform the margin sectors, feedyards, packers and retailers on what share of increased revenue from branded product sales to pass to the cow-calf segment to make participation competitive and the alliance financially sustainable. The cow-calf segment must absorb the added costs and cyclical financial loss to participate in alliances. Increased revenue is required to make branded products a more profitable marketing option than producing commodity beef.Agricultural Finance, Livestock Production/Industries,

Financial Conditions on U.S. Cotton Farms

For the last three years, U.S. cotton producers have been heavily dependent on ad hoc emergency disaster and market loss assistance to cash flow their operations. They have not been alone. Wheat, feed grains, oilseeds and rice producers have also been faced with low commodity prices, adverse weather and the need for substantial government assistance. Price support and direct payments by CCC for fiscal years 1998-2000 averaged $17.5 billion per year (USDA Ag Outlook). Has U.S. program crop agriculture turned the corner or will additional government payments likely be needed to sustain a vulnerable sector? This paper will focus on the outlook for the Agricultural and Food Policy Center’s (AFPC’s) representative cotton farms over the period 2001-2005. The results reported herein are drawn from AFPC Working Paper 00-4 which goes into greater depth on all 82 representative farms and ranches modeled by AFPC.Agribusiness, Agricultural and Food Policy, Crop Production/Industries,

Micro-mechanical analysis of damage growth and fracture in discontinuous fiber reinforced metal matrix composites

The near-crack-tip stresses in any planar coupon of arbitrary geometry subjected to mode 1 loading may be equated to those in an infinite center-cracked panel subjected to the appropriate equivalent remote biaxial stresses (ERBS). Since this process can be done for all such mode 1 coupons, attention may be focused on the behavior of the equivalent infinite cracked panel. To calculate the ERBS, the constant term in the series expansion of the crack-tip stress must be retained. It is proposed that the ERBS may be used quantitatively to explain different fracture phenomena such as crack branching

ANALYZING PEST CONTROL STRATEGIES FOR COTTON WITH AN ENVIRONMENTAL IMPACT MATRIX

Environmental Economics and Policy,