3,482 research outputs found
Perceptions and Usage of Communication Tools by Nebraska Cattle Producers
Communication is an important aspect of agriculture. Beef producers have access to a number of communication tools. It is important to study beef producers perceptions and usage of communication tools so that beef industries can effectively communicate with beef producers. This study examines the perceptions regarding the importance and frequencies of communication tools used by beef producers. Results indicate that beef producers, specifically Nebraska Cattlemen board of directors, prefer print and electronic media sources over social media sources for both general and beef industry information. Since social media was the least important communication tool used in this study one could imply that the Nebraska board of directors has not yet formed and attitude toward social media. Further research is needed to determine if demographics play an important role in the uses of social media
Occasional Paper No. 091-1: Small Towns Lack Capacity For Successful Development Efforts
Smalltown residents in Nebraska put a high premium on the need for economic development efforts, yet most think their towns\u27 efforts fall short. Some towns, especially the smallest, don\u27t even try to put together a development project. And those that do try often need help of a kind that State and Federal agencies do not offer. Nonetheless, Nebraska is trying some new programs that match State aid with a town\u27s needs and willingness for self-help. Based on a survey of 135 small towns in Nebraska
Klinisch-zeitlicher Verlauf eines solitÀren retinalen Astrozytoms
Zusammenfassung: Retinale Astrozytome sind benigne Tumoren der Netzhaut. Ihr Auftreten kann solitÀr oder multipel, selten auch bilateral oder als teil eines Syndroms (tuberöse Sklerose, Neurofibromatose Typ I) sein. Am Auge zeigt der Tumor nur eine geringe Wachstumstendenz, weswegen lediglich jÀhrliche Kontrollen ohne Intervention als ausreichend erscheinen. Selten kommt es zu einem aggressiven Wachstum, welches eine Therapie erfordert. Neben der Enukleation des betroffenen Auges gibt es zahlreiche anderen Therapiemöglichkeiten (z.B. vitreoretinale Chirurgie, Brachy- oder Kryotherapie, photodynamische Therapie). Aufgrund des Auftretens retinaler Astrozytome als Teil eines Syndroms sollte die jÀhrliche Kontrolle interdisziplinÀr erfolge
Optimal discrimination of quantum operations
We address the problem of discriminating with minimal error probability two
given quantum operations. We show that the use of entangled input states
generally improves the discrimination. For Pauli channels we provide a complete
comparison of the optimal strategies where either entangled or unentangled
input states are used.Comment: 4 pages, no figure
Tsirelson's problem and Kirchberg's conjecture
Tsirelson's problem asks whether the set of nonlocal quantum correlations
with a tensor product structure for the Hilbert space coincides with the one
where only commutativity between observables located at different sites is
assumed. Here it is shown that Kirchberg's QWEP conjecture on tensor products
of C*-algebras would imply a positive answer to this question for all bipartite
scenarios. This remains true also if one considers not only spatial
correlations, but also spatiotemporal correlations, where each party is allowed
to apply their measurements in temporal succession; we provide an example of a
state together with observables such that ordinary spatial correlations are
local, while the spatiotemporal correlations reveal nonlocality. Moreover, we
find an extended version of Tsirelson's problem which, for each nontrivial Bell
scenario, is equivalent to the QWEP conjecture. This extended version can be
conveniently formulated in terms of steering the system of a third party.
Finally, a comprehensive mathematical appendix offers background material on
complete positivity, tensor products of C*-algebras, group C*-algebras, and
some simple reformulations of the QWEP conjecture.Comment: 57 pages, to appear in Rev. Math. Phy
Quality of Life in Prodromal HD: Qualitative Analyses of Discourse from Participants and Companions
Persons who are at risk for Huntington's Disease (HD) can be tested for the HD gene expansion before symptom onset. People with the gene expansion, but no clinical diagnosis, are in the prodromal phase of HD. This study explored quality of life (QOL) in prodromal HD. Interviews about QOL, conducted with 9 prodromal HD participants and 6 companions, were transcribed. Discourse was coded for emotional valence, content (e.g., coping, spirituality, interpersonal relationships, HD in others, and employment), and time frame (e.g., current, past, and future). Respondents were more positive than negative about the present, which was their major focus. The most common statements were about positive attitudes. Positive statements were made about spirituality, and negative statements were made about HD in other people. Relationships, employment, and coping with HD reflected both positivity and negativity. Participants and companions spoke of the future with different concerns. Applicability of findings to the clinical management of HD are discussed
Dynamic behaviour studies of a vertical axis wind turbine blade using Operational Modal Analysis (OMA) and Experimental Modal Analysis (EMA)
Pressure Evolution of the Magnetic Field induced Ferromagnetic Fluctuation through the Pseudo-Metamagnetism of CeRu2Si2
Resistivity measurements performed under pressure in the paramagnetic ground
state of CeRu2Si2 are reported. They demonstrate that the relative change of
effective mass through the pseudo metamagnetic transition is invariant under
pressure. The results are compared with the first order metamagnetic transition
due to the antiferromagnetism of Ce0.9La0.1Ru2Si2 which corresponds to the
"negative" pressure of CeRu2Si2 by volume expansion. Finally, we describe the
link between the spin-depairing of quasiparticles on CeRu2Si2 and that of
Cooper pairs on the unconventional heavy fermion superconductor CeCoIn5.Comment: 5 pages, 6 figures, accepted for publication in J. Phys. Soc. Jp
Quantum state estimation and large deviations
In this paper we propose a method to estimate the density matrix \rho of a
d-level quantum system by measurements on the N-fold system. The scheme is
based on covariant observables and representation theory of unitary groups and
it extends previous results concerning the estimation of the spectrum of \rho.
We show that it is consistent (i.e. the original input state \rho is recovered
with certainty if N \to \infty), analyze its large deviation behavior, and
calculate explicitly the corresponding rate function which describes the
exponential decrease of error probabilities in the limit N \to \infty. Finally
we discuss the question whether the proposed scheme provides the fastest
possible decay of error probabilities.Comment: LaTex2e, 40 pages, 2 figures. Substantial changes in Section 4: one
new subsection (4.1) and another (4.2 was 4.1 in the previous version)
completely rewritten. Minor changes in Sect. 2 and 3. Typos corrected.
References added. Accepted for publication in Rev. Math. Phy
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