1,742 research outputs found
Reverend John J. Majewski
No full textPortrait of Reverend John J. Majewski. Mounted and signed: "To W.A. Keleher, Gratefully yours, Rev. John J. Majewski." Date unknown
On the structure of the set of positive maps
No full textThe full description of the set of positive maps T:A→B(H) ( A a C∗ -algebra) is given. The approach is based on the simple prescription for selecting various types of positive maps. This prescription stems from the Grothendieck theory of projective tensor products complemented by the theory of tensor connes. In particular, the origin of non-decomposable maps is clarifie
Zo kan het ook ......... en zo moet het
No full textAfscheidscollege, ter gelegenheid van het bereiken van de pensioengerechtigde leeftijd, op vrijdag 28 april 1989, door ir. W.A. Eisma.Building TechnologyArchitectur
On entropy for general quantum systems
No full textIn these notes we will give an overview and road map for a definition and characterization of (relative) entropy for both classical and quantum systems. In other words, we will provide a consistent treatment of entropy which can be applied within the recently developed Orlicz space based approach to large systems. This means that the proposed approach successfully provides a refined framework for the treatment of entropy in each of classical statistical physics, Dirac’s formalism of Quantum Mechanics, large systems of quantum statistical physics, and finally also for Quantum Field Theor
Dynamics on noncommutative Orlicz spaces
No full textQuantum dynamical maps are defined and studied for quantum statistical physics based on Orlicz spaces. This complements earlier work [26] where we made a strong case for the assertion that statistical physics of regular systems should properly be based on the pair of Orlicz spaces 〈Lcosh−1, L log(L + 1)〉, since this framework gives a better description of regular observables, and also allows for a well-defined entropy function. In the present paper we “complete” the picture by addressing the issue of the dynamics of such a system, as described by a Markov semigroup corresponding to some Dirichlet form (see [4, 13, 14]). Specifically, we show that even in the most general non-commutative contexts, completely positive Markov maps satisfying a natural Detailed Balance condition canonically admit an action on a large class of quantum Orlicz spaces. This is achieved by the development of a new interpolation strategy for extending the action of such maps to the appropriate intermediate spaces of the pair (L∞, L1). As a consequence, we obtain that completely positive quantum Markov dynamics naturally extends to the context proposed in [26
Industrial applications of lasers
No full textThe advent of the laser has from the welding of retinas opened up many fields of to high-bit-rate information technology. The availability transmission. In this article, of a powerful and coherent the author reviews the source of controlled light present position and gives the designer a versatile possible future uses of the tool in applications ranging lase
EXTENDED ANALYSIS OF THE INFRARED SPECTRUM OF
No full text1. J. T. Shy, J. W. Farley, W.E. Lamb, JR., and W.H. Wing, Phys. Rev. Lett. 45, 535 (1980). 2. J.K. G. Watson, S.C. Foster, and A.R.W. McKellar, Can. J. Phys. 65, 38 (1987). 3. W.A. Majewski, M.D. Marshall, A.R.W. McKellar, J.W.C. Johns, and J.K.G. Watson, J. Mol. Spectrosc. 122, 341 (1987). 4. W.A. Majewski, A.R.W. McKellar, and J.K.G. Watson, 45th Ohio State University Symposium on Molecular Spectroscopy, June 1990, Paper RF9.Author Institution: Herzberg Institute of Astrophysics, National Research Council of CanadaThe fundamental band of was first observed in 1980 by Shy, Farley, Lamb, and and later studied in detail by Watson, Foster, and who used a tunable diode laser spectrometer and a large cooled hollow cathode cell with an absorption path of 11 m. Their analysis covered the region from 1670 to , and included J-values up to 8. The present work is an extension of this earlier analysis to cover a wider wavenumber range and higher J-values. We use small, high current density, hollow-cathode with water cooling in order to record both emission with a Bomem FT spectrometer, and absorption spectra, with a diode laser spectrometer. So far, we have assigned a number of new transitions in the R-branch from , with J-values of up to 12. For J-values greater than about 7 in the excited state, Coriolis interactions with the state start to become significant for certain levels. These perturbations make it more difficult to locate and assign the affected transitions, but they also offer the possibility of gaining direct experimental information about the infrared forbidden vibration
On Applications of Orlicz Spaces to Statistical Physics
No full textWe present a new rigorous approach based on Orlicz spaces for
the description of the statistics of large regular statistical systems, both
classical and quantum. The pair of Orlicz spaces we explicitly use are,
respectively, built on the exponential function (for the description of regular
observables) and on an entropic type function (for the corresponding
states). They form a dual pair (both for classical and quantum systems).
This pair has the advantage of being general enough to encompass regular
observables, and specific enough for the latter Orlicz space to select
states with a well-defined entropy function. Moreover for small quantum
systems, this pair is shown to agree with the classical pairing of bounded
linear operators on a Hilbert space, and the trace-class operators.Grant Number N N202 208238; Foundation
for Polish Science TEAM project cofinanced by the EU European Regional
Development Fund for W.A. Majewski; National Research
Foundation for L.E. Labuschagn
NEW INFRARED OBSERVATIONS OF THE MOLECULE
No full textAuthor Institution: Department of Chemistry, University of Pittsburgh; Herzberg Institute of Astrophysics, National Research Council of CanadaThe new hollow-cathode discharge source described at previous Symposia1 gives many infrared lines of the neutral molecule as well as of the vibration-rotation spectrum of the . The former are mostly lines of the known and electronic , but the higher rotational temperature in the new source makes it possible to extend the previous assignments to higher N levels. The quality of the fit of the spectrum is not significantly improved by introducing additional parameters, suggesting that there are many small but irregular perturbations. A new group of lines near 4300 cm-1 is assigned to the electronic transition , This is the first observation of an state of . papers TE7 (1985) and RE5 (1986). W.A. Majewski, M.D. Marshall, A.R.W. McKellar, J.W.C. Johns, and J.K.G. Watson, J. Mol. Spectrosc., in press. G. Herzberg, H. Lew, J.J. Sloan, and J.K.G. Watson, Can. J. Phys. 59, 428 (1981). G.Herzberg, J.T. Hougen, and J.K. G. Watson, Can. J. Phys. 60. 1261 (1982)
The Effect Of Error Correcting Coding On Indoor Wireless Communications Systems In The 20 - 60 GHz Region
No full textAs a follow-up of the literature study ’An Overview Of Indoor Wireless Communications Systems In Ilie 20 - 60 GHz Region’, published by B.J. Bout jand W.A. Schouten in December 1992, a further study has been performed to investigate the effect of Forward Error Correcting Coding on Indoor Wireless Communications Systems. This has been done by calculating the average fade- and non-fade duration as a function of the frequency and the Signal To Noise ratio. These results are conveyed to a Bit Error Probability. After that, the same calculations are done for the same channel, but with Forward Error Correcting Coding.Electrical Engineering, Mathematics and Computer ScienceTelecommunicatie- en Verkeersbegeleidingssysteme
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