d-Au and p-p collisions at RHIC and the multichain Monte Carlo Dpmjet-III

In this paper we compare systematically the two-component Dual Parton Model (DPM) event generator Dpmjet-III to d-Au and p-p data from RHIC. In this process we are able to improve the model. The need for fusion of chains and a recalibration of the model to obtain collision scaling in h-A and d-A collisions was found already in previous comparisons. Here, comparing to transverse momentum distributions of identified charged hadrons we find also the need to modify the transverse momentum distributions in the decay of hadronic strings, the basic building blocks of the model on soft hadronic collisions.Comment: 8 pages, 13 figures, Based on a contribution to a workshop "QCD at Cosmic Energies, Erice, Italie, Aug.29 to Sept.5 200

Antibaryon to Baryon Production Ratios in Pb-Pb and p-p collision at LHC energies of the DPMJET-III Monte Carlo

A sizable component of stopped baryons is predicted for pp and P bP b collisions at LHC. Based on an analysis of RHIC data within framework of our multichain Monte Carlo DPMJET-III the LHC predictions are presented.Comment: Presented at "Heavy Ion Collisions at the LHC: last call for predictions", Geneva Switzerland, May 14th-June 8t

RHIC data and the multichain Monte Carlo DPMJET-II

Using data from RHIC we are able to systematically improve the two-component Dual Parton Model (DPM) event generator DPMJET-III. Introducing percolation parametrized as fusion of chains the model describes multiplicities and pseudorapidity distributions in nucleus-nucleus collisions at all centralities. Guided by the d-Au data from RHIC we recalibrate the model to obtain collision scaling in h-A and d-A collisions.Comment: 8 pages, Based on a poster submitted to the 17th International Conference on Ultra Relativistic Nucleus Nucleus Collisions, Jan. 11-17, Oakland,California US

An Analysis of Hedging and Forward Contracting as Aids in Obtaining Credit

Futures trading in the United States began over 100 years ago. The first commodities traded were grains such as wheat, corn and oats. Since that time, over 50 commodities ranging from live animals and animal products to coffee, sugar and metals have been added to the list of commodities traded in the futures markets. Currently, 29 commodities possessing widely varying physical characteristics are actively traded on United States\u27 exchanges. Appendix table A-1 lists a number of commodities, some of which are inactive and others which are actively traded on futures markets in the United States. The basic characteristics of Unit�d States agriculture have been changing for a number of years, but during the last 10-15 years the rate of change seems to have accelerated. These basic changes in agriculture-- increased use of technology, larger farms, and increased production per farm, increased costs of production have resulted in increased capital needs for farmers and agri-business firms. These increased capital needs have been met primarily by increased borrowing. Increased borrowing by individuals with fixed assets, however, results in greater risk, as suggested by the principle of increasing risk. This economic principle suggests that as debt increases, the operator\u27s equity as a percentage of total investment declines. For example, if a person w th $10,000 in capital borrows$10,000, .his equity is 50%. If he borrows $40,000, his equity is 20%. The farmer whose equity is only 20% has a greater· risk of losing his original investment than the farmer whose equity is 50%. Even a modest change in price results in a large effect on net income. Therefore, lenders are wont to limit the amount of capital loaned on given collateral because they realize the effect slight changes in price have on a borrower\u27s equity. (See more in text.

Attitude of German People and Government Towards Trusts

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Low intensity H-beta emission from the interstellar medium

A search for diffuse galactic H beta emission not associated with any known H II regions was conducted using a 2-inch-diamenter pressure-scanned Fabry-Perot spectrometer at the Coude focus of a 36-inch telescope. Observations were made near the directions of four pulsars. Emissions with intensities from 40,000 to 400,000 photons/sq cm sec ster (corresponding to emission measures of approximately 10 - 100) were detected in three of the directions. The data indicate an average ionization rate (assuming steady state) of approximately 10 to the minus 14th power/H-atom sec for the interstellar hydrogen in these directions and temperatures between 1000 and 10,000 K for the emitting regions. Plans were made to continue the investigation of these very faint hydrogen emission sources using a 6-inch-diameter Fabry-Perot spectrometer

Fabry-Perot observations of comet Kohoutek

Observations of H alpha, H20(+), and emission lines from comet Kohoutek were made. Analyses of H alpha line profiles and line intensities indicate that the mean outflow velocity of the hydrogen atoms was 7.8 + or - 0.2 km s(-1) and that the hydrogen atom production rate varied for comet-sun distances between 1 AU and 0.4 AU. The identification of an H20(+) emission feature in certain H alpha scans indicates that the H20(+) ions were moving in a tailward direction with a velocity of 20 to 40 km s(-1) with respect to the comet nucleus. An upper limit of 1 part in 100 was found for the D/H ratio in the cometary atomic hydrogen cloud