Production of Hard Photons and Jets in Deep Inelastic Lepton Proton Scattering at Order O(\alpha_s)

We calculate the O(\alpha_s) corrections to the production of a hard and isolated photon accompanied by one or two jets in deep inelastic lepton nucleon scattering at HERA. Numerical results are presented and the potential of this process for studies of parton distribution functions is discussed.Comment: 20 pages Latex, 12 postscript figures and axodraw.sty include

Should physical education be a standard for public schools : are unhealthy kids left behind?

Physical education is an important part of elementary school learning because children develop necessary motor skills. These skills encourage learning not only about fitness but also about core ideas inside the classroom. This topic was chosen because physical education should be included in the mandated standards for every grade level. Three themes emerged from the data collected from two face-to-face interviews and eight paper surveys filled out by teachers from Marina School. A lesson plan book was created for second grade teachers to emphasize critical motor skills. To help teachers implement this program, a grant was written to provide the school with the necessary physical education equipment

EMERGING AGRICULTURAL WATER CONSERVATION PRICE INCENTIVES

Recent Bureau of Reclamation policies encourage or require irrigation districts to adopt price conservation incentives. Using unpublished survey results and new district-level information, we examine the rate structures and incentives of district water pricing. Our findings reveal that the majority of districts use fixed charges independent of the quantity of water delivered and that most conservation rate structures recently implemented are designed so that the first tier quantity allocation satisfies most crop water needs. Although other district management objectives may be satisfied, price incentives are diminished or nonexistent. The question of whether conservation is being achieved is tautological and depends on how each district defines conservation.Resource /Energy Economics and Policy,

IRRIGATION DISTRICT ADOPTION OF WATER CONSERVING RATE STRUCTURES

A binary choice model was used to identify the attributes that influence irrigation district adoption of conservation rate structures. Using principles of rate design and irrigation district administration as a framework, measures of irrigation district rate structure objectives and physical and economic conditions were developed. The factors investigated characterize the constraints under which districts operate, value and cost of water, quantity of water delivered and revenue risk for districts. Rate structure adoption was predicted with over 75% accuracy. Both significant and non-significant factors are key to understanding rate choice. Districts were more likely to adopt conservation rate pricing when the cost of water to farmers was greater, higher value crops were grown and in areas with warmer and longer growing seasons. These conditions may be interpreted as reflecting the presence of greater opportunity costs in allocating water between low and higher valued uses. Conservation rate pricing was less likely to be adopted by districts where the proportion of alfalfa to total acreage was higher and with higher per acre deliveries of water. Somewhat surprisingly, annual variation in water deliveries (which should increase the risk of revenue shortfalls) and size of the district (larger districts being more sophisticated) have little bearing on the type of rate structure adopted.Environmental Economics and Policy, Land Economics/Use, Resource /Energy Economics and Policy,

The Story of YMPs ( Yield Maintenance Premiums ) in Bankruptcy

This article tries to tell the story of YMPs in bankruptcy. It is not an easy story to tell. It has so many subplots: the court’s position on freedom of contract, the debtor’s solvency or insolvency, the effect of recognizing the YMP on other creditors, whether the YMP claim arose pre- or post-petition, the proper relationship between section 502 claim allowance and section 506(b) which permits oversecured claims to include reasonable fees, costs, or charges as provided for in the loan agreement, and the effect of YMP enforcement on chapter 11 plan configuration. In terms of basic plot line though, the debtor will almost always want to get rid of the YMP – somehow, some way. The YMP holder will almost always want to enforce it. The debtor’s other creditors will join with the debtor to oppose YMP enforcement if enforcement will adversely affect their position. The YMP story then it really a story about how debtors can try to invalidate or neutralize YMPs and how YMP holders can try to make them enforceable

EVALUATING THE EFFECTIVENESS OF CONSERVATION WATER-PRICING PROGRAMS: REPLY

Resource /Energy Economics and Policy,

EVALUATING THE EFFECTIVENESS OF CONSERVATION WATER-PRICING PROGRAMS

Charging farmers increasing block prices for irrigation deliveries is advocated as a means of encouraging agricultural water conservation in the West. We formulated a model of a hypothetical irrigated river basin to investigate the hyrdro-economic circumstances in which such pricing leads to water conservation. Our results indicate that increasing delivery prices may encourage irrigators to make adjustments with countervailing impacts on consumptive water use and conservation. Whether these countervailing impacts combine to conserve water or increase its consumptive use must be resolved empirically. An alternative resolution of this ambiguity is to assess water prices in terms of consumptive use.Resource /Energy Economics and Policy,

High-dimensional quantum dynamics of adsorption and desorption of H2_2 at Cu(111)

We performed high-dimensional quantum dynamical calculations of the dissociative adsorption and associative desorption of hydrogen on Cu(111). The potential energy surface (PES) is obtained from density functional theory calculations. Two regimes of dynamics are found, at low energies sticking is determined by the minimum energy barrier, at high energies by the distribution of barrier heights. Experimental results are well-reproduced qualitatively, but some quantitative discrepancies are identified as well.Comment: 4 two column pages, revtex, 4 figures, to appear in Phys. Rev. Let