98,030 research outputs found
Prospecting in the Common Tern "Sterna hirundo"
Kurzfassung der Dissertation an der Mathematisch-Naturwissenschaftlichen FakultÀt V der Carl-von Ossietzky-UniversitÀt zu Oldenburg, betreut von Prof. Dr. Peter H. Becker, angenommen 2008
Superconductive thin film makes convenient liquid helium level sensor
Sensor consisting of superconductive film mounted on a dipstick measures the level of liquid helium in a Dewar flask. The sensor is made by depositing a thin film of niobium metal to a thickness of 2000 angstroms on a quartz substrate, which is then mounted on a graduated dipstick
Two Receive Distinguished Alumnus Award
News release announcing the University of Dayton\u27s Alumnus Award has been given to Alphonse H. Mahrt, second place, and Edwin G. Becker, third place for 1968
Distribution and consequences of VKORC1 polymorphisms in Germany
Runge, M., Von Keyserlingk, M., Braune, S., Freise, J., Eiler, T., Plenge-Bönig, A., Becker, D., Pelz, H.-J., Esther, A., Rost, S., MĂŒller, C.R
Drainage of a nanoconfined simple fluid: rate effects on squeeze-out dynamics
We investigate the effect of loading rate on drainage in molecularly thin
films of a simple fluid made of quasi-spherical molecules
(octamethylcyclotetrasiloxane, OMCTS). We find that (i) rapidly confined OMCTS
retains its tendency to organize into layers parallel to the confining
surfaces, and (ii) flow resistance in such layered films can be described by
bulklike viscous forces if one accounts for the existence of one monolayer
immobilized on each surfaces. The latter result is fully consistent with the
recent work of Becker and Mugele, who reached a similar conclusion by analyzing
the dynamics of squeeze-out fronts in OMCTS [T. Becker and F. Mugele, Phys.
Rev. Lett. {\bf 91} 166104(2003)]. Furthermore, we show that the confinement
rate controls the nature of the thinning transitions: layer-by-layer expulsion
of molecules in metastable, slowly confined films proceeds by a
nucleation/growth mechanism, whereas deeply and rapidly quenched films are
unstable and undergo thinning transitions akin to spinodal decomposition
THE UTILITARIAN FOUNDATIONS OF THE ECONOMIC APPROACH TO HUMAN BEHAVIOR.
The economic approach to the study of human behavior has been presented by its foremost representative as the most effective method of studying social phenomena. Gary BeckerÂŽs view supposes that, on the one hand, all social phenomena can be explained as a consequence of individual actions and, on the other, there is a stable pattern of individual behavior economics has been able to understand thoroughly. Hence, economics, according to this view, is no longer limited to the study of a certain domain of human actions or to the understanding of material wealth or the necessary conditions for the material reproduction of society. Economics is a method that gives the social scientist the necessary tools to understand and even transform the world that surrounds him/her. Becker clearly acknowledges the direct link between his approach and Jeremy BenthamÂŽs theory. Beyond the apparent connections regarding their conception of human nature there is one central point that links the two authors: their view of economics as an attitude of the human mind, an inherent capacity to calculate that explains all human actions. This paper argues that Bentham provides the philosophical groundings for BeckerÂŽs theory. The application of the principle of utility to every aspect of human behavior justifies economic imperialism by transforming economics into a method of general analysis of human behavior. Indeed, economics is no longer defined according to its subject matter but according to its method, which means an increasing scope explaining BeckerÂŽs claim that the economic approach provides a rigorous framework for the analysis of all social phenomena.Gary Becker
Comments on Heterotic Flux Compactifications
In heterotic flux compactification with supersymmetry, three different
connections with torsion appear naturally, all in the form .
Supersymmetry condition carries , the Dirac operator has , and
higher order term in the effective action involves . With a view toward
the gauge sector, we explore the geometry with such torsions. After reviewing
the supersymmetry constraints and finding a relation between the scalar
curvature and the flux, we derive the squared form of the zero mode equations
for gauge fermions. With \d H=0, the operator has a positive potential term,
and the mass of the unbroken gauge sector appears formally positive definite.
However, this apparent contradiction is avoided by a no-go theorem that the
compactification with and \d H=0 is necessarily singular, and the
formal positivity is invalid. With \d H\neq 0, smooth compactification
becomes possible. We show that, at least near smooth supersymmetric solution,
the size of should be comparable to that of \d H and the consistent
truncation of action has to keep term. A warp factor equation of
motion is rewritten with contribution included precisely, and
some limits are considered.Comment: 31 pages, a numerical factor correcte
New Year's Concert, January 5, 1992
This is the concert program of the Greater Boston Youth Symphony Orchestra Brass Ensemble and Percussion Ensemble performance on Sunday, January 5, 1992 at 1:30 p.m., at the Concert Hall, 855 Commonwealth Avenue. Works performed were "Ogoun Badagris" by Christopher Rouse, "Log Cabin Blues" by George H. Green (arr. Bob Becker), "Dill Pickles" by Charles Johnson (arr. Bob Becker), "Fanfare for Tambourine" by John Alfieri, "Funeral March" by Edvard Grieg, and "What Birds See" by John Berners. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund
Optimal Binary Search Trees with Near Minimal Height
Suppose we have n keys, n access probabilities for the keys, and n+1 access
probabilities for the gaps between the keys. Let h_min(n) be the minimal height
of a binary search tree for n keys. We consider the problem to construct an
optimal binary search tree with near minimal height, i.e.\ with height h <=
h_min(n) + Delta for some fixed Delta. It is shown, that for any fixed Delta
optimal binary search trees with near minimal height can be constructed in time
O(n^2). This is as fast as in the unrestricted case.
So far, the best known algorithms for the construction of height-restricted
optimal binary search trees have running time O(L n^2), whereby L is the
maximal permitted height. Compared to these algorithms our algorithm is at
least faster by a factor of log n, because L is lower bounded by log n
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