Endogenous adjusted Output Quotas - The Abolishment of the Raw Milk Quota in the European Union

This paper discusses an approach to implement output quotas in the GTAP model which permits an endogenous adjustment of both the supplied quantity and the quota rent. Since the quota rent is interpreted as additional earnings of the factors used no change of the worldwide GTAP data base is required. Several modifications of the GTAP model and two exogenous coefficients are necessary. Considering uncertain values of one of the coefficients, systematic sensitivity analysis is applied. The abolishment of the raw milk quota in the European Union would lead to a remarkable decrease in raw milk prices in most member countries. The raw milk production increases in Denmark, Ireland, Luxembourg and the Netherlands while it declines in Greece and Portugal. In the other member countries the raw milk production changes slightly.general equilibrium model, GTAP, output quota, raw milk production, sensitivity analysis, Agribusiness,

What are the preferences of Dairy Farmers regarding their Work? A Discrete Choice Experiment in the Eastern Part of Switzerland

The paper analyzes the preferences of dairy farmers with respect to their work by the means of a Discrete Choice experiment, which was carried out in the Eastern part of Switzerland. 304 dairy farmers, who intend to produce milk beyond the abolishment of the milk quota in 2009, were asked to choose between the status quo and alternatives consisting of several combinations with four attributes. The latter comprise work content, terms of employment, holiday per year and income per year. Using a probit model, the willingness to pay/accept is calculated. The results indicate that there is a strong preference to stay in dairy production. In order to achieve both, maintaining the level of utility and moving away from dairy production, an additional income (willingness to accept) per year of at least CHF 25’000.- would be necessary. The pre-ferences of dairy farmers show that differences between the alternative work contents like suckler cows husbandry, farming without livestock and work outside of agriculture are minor.discrete choice, preferences, work content, dairy farming, Labor and Human Capital, Land Economics/Use,

Approaches and possible improvements in the area of multibody dynamics modeling

A wide ranging look is taken at issues involved in the dynamic modeling of complex, multibodied orbiting space systems. Capabilities and limitations of two major codes (DISCOS, TREETOPS) are assessed and possible extensions to the CONTOPS software are outlined. In addition, recommendations are made concerning the direction future development should take in order to achieve higher fidelity, more computationally efficient multibody software solutions

The Working Poor and Social Security Privatization: Restoring the Opportunity to Save

Many defenders of Social Security assert that the program favors the poor and keeps low-wage earners out of poverty. Those claims are mistaken. Today, despite Social Security's progressive benefit structure, more than 1 in 10 seniors live in poverty. Social Security simply costs too much and pays too little. The rate of return on Social Security taxes paid during a working life is dismal, making the opportunity cost of participating in the program instead of a private retirement plan tremendous. Social Security's approaching fiscal crisis threatens to make this situation worse. The poor would accrue substantial savings and enjoy much larger retirement benefits if they were allowed to redirect payroll taxes to individually owned, privately invested accounts. Instead of relying on political promises for retirement security, low-wage workers would have tangible retirement savings built from their earnings. Such a system would provide greater financial security and would go a long way toward eliminating poverty among the elderly

High Resolution Microimaging with Pulsed Electrically-Detected Magnetic Resonance

The investigation of paramagnetic species (such as point defects, dopants, and impurities) in solid-state electronic devices is significant because of their effect on device performance. Conventionally, these species are detected and imaged using the electron spin resonance (ESR) technique. In many instances, ESR is not sensitive enough to deal with miniature devices having small numbers of paramagnetic species and high spatial heterogeneity. This limitation can in principle be overcome by employing a more sensitive method called electrically-detected magnetic resonance, which is based on measuring the effect of paramagnetic species on the electric current of the device while inducing electron spin-flip transitions. However, up until now, measurement of the current of the device could not reveal the spatial heterogeneity of its paramagnetic species. We provide here, for the first time, high resolution microimages of paramagnetic species in operating solar cells obtained through electrically-detected magnetic resonance. The method is based on unique microwave pulse sequences for excitation and detection of the electrical signal under a static magnetic field and powerful pulsed magnetic field gradients that spatially encode the electrical current of the sample. The approach developed here can be widely used in the nondestructive three-dimensional inspection and characterization of paramagnetic species in a variety of electronic devices.Comment: 19 pages, 4 figures +S

Success factors for farming collectives

As the most intensive form of partnership in agriculture, farming collectives (FCs) place high demands on their participants. Based on a census of Swiss farming collectives, three success indicators are formed. The first and second describe interpersonal and economic success respectively, whilst the third encompasses overall success. Factors influencing success are determined by means of multiple regressions. Five predictor variables (compatibility with co-operation partner, trust, information quality, attitude of social environment, and relationship/kinship circle of the cooperation partner) accounted for 44 per cent of the variance in interpersonal success. Economic success was far more difficult to explain (R2 = 0.11). Even so, the influence of “soft” factors, even on the economic success of a farming collective, is striking. Above all, trust and the human and structural compatibility of the cooperation partners play an important role for all three types of success. The co-operation agreement, agricultural consultation, the number of participating people on the farm, and the investments made may be ranked as less important than previously assumed.farming collective, economic satisfaction, interpersonal conflicts, Agribusiness,

Freeze-out Configuration in Multifragmentation

The excitation energy and the nuclear density at the time of breakup are extracted for the $\alpha + ^{197}Au$ reaction at beam energies of 1 and 3.6 GeV/nucleon. These quantities are calculated from the average relative velocity of intermediate mass fragments (IMF) at large correlation angles as a function of the multiplicity of IMFs using a statistical model coupled with many-body Coulomb trajectory calculations. The Coulomb component $\vec{v}_{c}$ and thermal component $\vec{v}_{0}$ are found to depend oppositely on the excitation energy, IMFs multiplicity, and freeze-out density. These dependencies allow the determination of both the volume and the mean excitation energy at the time of breakup. It is found that the volume remained constant as the beam energy was increased, with a breakup density of about $\rho_{0}/7$, but that the excitation energy increased $25\%$ to about 5.5 MeV/nucleon.Comment: 12 pages, 2 figures available upon resues

Transport and recombination through weakly coupled localized spin pairs in semiconductors during coherent spin excitation

Semi-analytical predictions for the transients of spin-dependent transport and recombination rates through localized states in semiconductors during coherent electron spin excitation are made for the case of weakly spin-coupled charge carrier ensembles. The results show that the on-resonant Rabi frequency of electrically or optically detected spin-oscillation doubles abruptly as the strength of the resonant microwave field gamma B_1 exceeds the Larmor frequency separation within the pair of charge carrier states between which the transport or recombination transition takes place. For the case of a Larmor frequency separation of the order of gamma B_1 and arbitrary excitation frequencies, the charge carrier pairs exhibit four different nutation frequencies. From the calculations, a simple set of equations for the prediction of these frequencies is derived

Aliphatic segmented poly(ester amide)s based on symmetrical bisamide-diols

In this thesis the synthesis and characterization of aliphatic segmented poly(ester amide)s are described. To understand the structure-property relations of these polymers, thermal, physical and mechanical properties have been determined and linked to features like phase separation, crystallization behaviour and morphology