6,465 research outputs found
Arkansas Wheat Cultivar Performance Tests 2010-2011
Wheat cultivar performance tests are conducted each year in Arkansas by the Arkansas Agricultural Experiment Station, Department of Crop, Soil and Environmental Sciences. The tests provide information to companies developing cultivars and/or marketing seed within the state and aid the Arkansas Cooperative Extension Service in formulating cultivar recommendations for small-grain producers
Investigation of the kinetics of crystallization of molten binary and ternary oxide systems Quarterly status report, 1 Dec. 1967 - 29 Feb. 1968
Reaction kinetics of crystallized molten binary and ternary oxide glass making composition
The Optimal Single Copy Measurement for the Hidden Subgroup Problem
The optimization of measurements for the state distinction problem has
recently been applied to the theory of quantum algorithms with considerable
successes, including efficient new quantum algorithms for the non-abelian
hidden subgroup problem. Previous work has identified the optimal single copy
measurement for the hidden subgroup problem over abelian groups as well as for
the non-abelian problem in the setting where the subgroups are restricted to be
all conjugate to each other. Here we describe the optimal single copy
measurement for the hidden subgroup problem when all of the subgroups of the
group are given with equal a priori probability. The optimal measurement is
seen to be a hybrid of the two previously discovered single copy optimal
measurements for the hidden subgroup problem.Comment: 8 pages. Error in main proof fixe
The Voluntary Adjustment of Railroad Obligations
Automatic memory management techniques eliminate many programming errors that are both hard to find and to correct. However, these techniques are not yet used in embedded systems with hard realtime applications. The reason is that current methods for automatic memory management have a number of drawbacks. The two major ones are: (1) not being able to always guarantee short real-time deadlines and (2) using large amounts of extra memory. Memory is usually a scarce resource in embedded applications. In this paper we present a new technique, Real-Time Reference Counting (RTRC) that overcomes the current problems and makes automatic memory management attractive also for hard real-time applications. The main contribution of RTRC is that often all memory can be used to store live objects. This should be compared to a memory overhead of about 500% for garbage collectors based on copying techniques and about 50% for garbage collectors based on mark-and-sweep techniques
Electronic states and Landau levels in graphene stacks
We analyze, within a minimal model that allows analytical calculations, the
electronic structure and Landau levels of graphene multi-layers with different
stacking orders. We find, among other results, that electrostatic effects can
induce a strongly divergent density of states in bi- and tri-layers,
reminiscent of one-dimensional systems. The density of states at the surface of
semi-infinite stacks, on the other hand, may vanish at low energies, or show a
band of surface states, depending on the stacking order
The central black hole masses and Doppler factors of the -ray loud blazars
In this paper, The central black hole masses and the Doppler factors are
derived for PKS 0528+134, PKS 0537-441, 3C279,
PKS 1406-074, PKS 1622-297, Q1633+382, Mkn 501, and BL Lacertae.
The masses obtained are in the range of (1 -7) and
compared with that obtained with the Klein-Nishina cross section considered
(Dermer & Gehrels 1995). If we considered only the Thomson cross section, the
masses are in the range of 2.6 - 2.
The masses obtained from our method are less sensitive to the flux than those
obtained from Dermer & Gehrels (1995) method. The masses obtained from two
flares (1991 and 1996 flares) of 3C279 are almost the same. For 3C279 and BL
Lacertae, viewing angle, , and Lorentz factor, , are estimated
from the derived Doppler factor and the measured superluminal velocity.
For 3C279,
,
= 2.4-14.4 for = 3.37;
, = 2.95-11.20 for =
4.89;
For BL Lacertae, ,
= 2.0-4.0.Comment: 5 pages, A&AS, 136, 13-18 (1999
Direct experimental evidence of free fermion antibunching
Fermion antibunching was observed on a beam of free noninteracting neutrons.
A monochromatic beam of thermal neutrons was first split by a graphite single
crystal, then fed to two detectors, displaying a reduced coincidence rate. The
result is a fermionic complement to the Hanbury Brown and Twiss effect for
photons.Comment: 4 pages, 2 figure
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