Inquiry Teaching: It is Easier than You Think!

This article is a survey of the literature on inquiry teaching. Many teachers do not participate in inquiry teaching for various reasons. The following are the main reasons: it takes too much time; students do not learn what they need for the state test; and, the teachers do not know how to grade projects and presentations. These reasons sound like rhetoric from long ago, but it is very current. In this article, research is used to show that students who participate in inquiry learning or any type of problem-based education do much better than students who do not have that opportunity. The student participants not only have better grades, but they think on a higher level, become more civic minded, and are better problem solvers. Included in the article are four models which can be used to teach inquiry science, and two lesson plans with rubrics to help grade the inquiry STS lesson. The major point being made throughout is that there is an advantage to teaching students using inquiry. The only disadvantage is not giving the students the opportunity to use inquiry and to grow

HOW MUCH DO FARMERS VALUE THEIR INDEPENDENCE? ESTIMATING THE RISK AND AUTONOMY PREMIA ASSOCIATED WITH PRODUCTION CONTRACTS

A farmer's decision to contract or produce independently depends on the distribution of income under both arrangements, and on attributes associated with both business arrangements. Risk-averse farmers should be willing to pay a risk premium for the reduction in price risk provided by a contract. Farmers with a preference for "autonomy" should be willing to pay a premium for certain attributes associated with independent production, such as the right to make management decisions and own the commodity they produce. The benefits to growers from contracting (such as risk reduction) may be over-estimated if the non-pecuniary benefits enjoyed by independent producers are not accounted for. This study uses national survey data to estimate the risk premium, the change in expected income, and the autonomy premium associated with hog production contracts.agricultural contracts, autonomy, nonpecuniary benefits, risk, Farm Management,

DOES CONTRACTING RAISE FARM PRODUCTIVITY? THE IMPACT OF PRODUCTION CONTRACTS ON HOG FARM PERFORMANCE

The costs and benefits of policies designed to regulate the use of production contracts will depend in part on the impact of these contracts on farm productivity. In this paper we measure the impact of contracting on 1) partial and total factor productivity and 2) the production technology for 479 US hog operations. A sample selection model accounts for the fact that unobservable variables may be correlated with both the decision to contract and farm productivity. Results also identify determinants of farmers' decisions to contract and factors influencing farm productivity.Livestock Production/Industries, Productivity Analysis,

FACTORS AFFECTING CONTRACTOR AND GROWER SUCCESS IN HOG CONTRACTING

This study analyzes a national survey of U.S. hog producers within a principal-agent framework in order to examine factors affecting contractor and grower success in hog contracting. Several factors had differential impacts on contractor and grower returns. Results suggest that there may be a role for public policy in ensuring that contract arrangements are conducted fairly.Livestock Production/Industries,

Multiple Environmental Externalities and Manure Management Policy

Livestock waste pollutes multiple environmental media along multiple dimensions. This study explores the economic and environmental implications of single-medium and coordinated multi-media policies for reducing manure-related externalities, with particular attention paid to tradeoffs that occur when policies designed to correct an externality in one medium ignore externalities in other media.Environmental Economics and Policy,

The Potential Effects of Climate Change on the Productivity, Costs, and Returns of U.S. Dairy Production

Climate change could affect the costs and returns of livestock production by altering the thermal environment of animals thereby affecting animal health, reproduction, and the efficiency by which livestock convert feed into retained products (especially meat and milk). In the United States, concentrated livestock operations are located in a variety of climatic regions, suggesting that the industry could adapt to future changes in temperature and weather patterns resulting from global warming. However, this adaption could be costly. We use nationally representative data on dairy producers coupled with finely-scaled climate data to empirically examine how producers’ costs, returns, and production systems vary across U.S. regions as a function of the local climate.climate change, dairy, temperature humidity index, economics, Agricultural and Food Policy, Environmental Economics and Policy, Livestock Production/Industries, Production Economics, Q5,

Manure Application Standards and EQIP Payments: The Distribution of Economic and Environmental Costs and Benefits across US Hog Farms

Implementation of new CAFO regulations and EQIP payments could have important implications for the structure of the hog sector. This study uses a farm-level positive mathematical programming model to estimate the distribution of the economic and environmental effects of these new policies across regional and scale typologies.Environmental Economics and Policy,

RISK AND STRUCTURAL CHANGE IN AGRICULTURE: HOW INCOME SHOCKS INFLUENCE FARM SIZE

Farm-level Census data and county-level income shock data reveal that past unexpected income shocks affect the rate of change in average farm size. Average farm size increases more quickly in counties experiencing negative income shocks as compared to counties experiencing positive income shocks. This result cannot be explained by perfect-market models, which predict farm size should adjust according to changes in the relative prices of labor and capital. We posit a model wherein cash flows affect liquidity, which in turn affects farm borrowing and capital costs. In the model, farms that do not face liquidity constraints benefit from negative income shocks because they reduce land values, so these farms expand while liquidity-constrained farms contract. Observed farm consolidation patterns and farm exit rates are consistent with a model wherein liquidity constraints affect small farms more than large farms.farm size, farm structure, income shocks, liquidity constraint, risk, Agricultural Finance, Industrial Organization,

A review of US Army aircrew-aircraft integration research programs

If the U.S. Army's desire to develop a one crew version of the Light Helicopter Family (LHX) helicopter is to be realized, both flightpath management and mission management will have to be performed by one crew. Flightpath management, the helicopter pilot, and the handling qualities of the helicopter were discussed. In addition, mission management, the helicopter pilot, and pilot control/display interface were considered. Aircrew-aircraft integration plans and programs were reviewed

Decomposition of Total Factor Productivity Change in the U.S. Hog Industry

The U.S. hog industry has experienced dramatic structural changes and rapid increases in farm productivity. A stochastic frontier analysis is used to measure hog enterprise total factor productivity (TFP) growth between 1992 and 2004 and to decompose this growth into technical change and changes in technical efficiency, scale efficiency, and allocative efficiency. Productivity gains over the 12-year period are found to be explained almost entirely by technical progress and by improvements in scale efficiency. Differences in TFP growth rates in the Southeast and Heartland regions were found to be explained primarily by differences in farm size growth rates.hog production, scale efficiency, stochastic frontier, technical change, total factor productivity growth, Livestock Production/Industries, Production Economics, D24, Q12,