179,886 research outputs found
Paul R. Speer portrait, undated
No full textBlack-and-white photograph of Paul R. Speer. The captions on the reverse of the image read, "Paul R. Speer; 408 Frazier Drive Chattanooga, Tenn 37421" and "instructor Chatt.(Evening) College; Engineering Science Review course." The stamp on the reverse of the image reads, "Please Return to Director of Publicity; UNIVERSITY OF CHATTANOOGA; CHATTANOOGA 3, TENNESSEE.
Paul R. Speer portrait, undated
No full textBlack-and-white photograph of Paul R. Speer. The captions on the reverse of the image read, "Paul R. Speer; 408 Frazier Drive Chattanooga, Tenn 37421" and "instructor Chatt.(Evening) College; Engineering Science Review course." The stamp on the reverse of the image reads, "Please Return to Director of Publicity; UNIVERSITY OF CHATTANOOGA; CHATTANOOGA 3, TENNESSEE.
All Is Fair? Lonnie R. Speer Shatters Myths With Tales Of Mistreated Pows
No full textLonnie R. Speer is a historian and lecturer whose expertise lies in the history of Civil War prisons and prisoners of war. He is the author of Portals to Hell: Military Prisons of the Civil War (Stackpole Books,1997). His latest book, War of Vengeance: Acts of Retaliation on POWs in t...
The blockage problem
No full textWe investigate the totally asymmetric exclusion process on Z, with the jump rate at
site i given by ri = 1 for i 6= 0, r0 = r. It is easy to see that the maximal stationary current
j(r) is nondecreasing in r and that j(r) = 1/4 for r ≥ 1; it is a long outstanding problem to
determine whether or not the critical value rc of r such that j(r) = 1/4 for r > rc is strictly
less than 1. Here we present a heuristic argument, based on the analysis of the first sixteen
terms in a formal power series expansion of j(r) obtained from finite volume systems, that
rc = 1 and that for r / 1, j(r) ≃ 1/4 − γ exp[−a/(1 − r)] with a ≈ 2. We also give some
new exact results about this system; in particular we prove that j(r) = Jmax(r), with
Jmax(r) the hydrodynamic maximal current defined by Sepp ̈al ̈ainen, and thus establish
continuity of j(r). Finally we describe a related exactly solvable model, a semi-infinite
system in which the site i = 0 is always occupied. For that system, r
s-i
c = 1/2 and the
analogue j
s-i(r) of j(r) satisfies j
s-i(r) = r(1 − r) for r ≤ r
s-i
c
; j
s-i(r) is the limit of finite
volume currents inside the curve |r(1 − r)| = 1/4 in the complex r plane and we suggest
that analogous behavior may hold for the original system
Spontaneous symmetry breaking transport : from anomalous response to chiral separation
No full textSpeer D. Spontaneous symmetry breaking transport : from anomalous response to chiral separation. Bielefeld (Germany): Bielefeld University; 2011.We consider the dynamics of Brownian particles exposed to symmetric periodic potentials and driven out of equilibrium by symmetric driving forces at several examples. For any non-zero temperature, the average velocity vanishes but there may be dynamical states of sustained transport spontaneously breaking the symmetry in the deterministic limit, named spontaneous symmetry breaking transport. If the symmetry of the dynamics is broken by a small perturbation, e.g. a constant bias force, the particle mobility may be in practically any direction, even in the direction opposite to the bias force. Changing only a scalar parameter of the dynamics, e.g. the amplitude or frequency of the symmetric driving force, the particle can be directed into almost any direction. Without a constant bias force, the diffusion coefficient of the particle diverges in the deterministic limit. In more than one (spatial) dimension, diffusion is highly anisotropic, and the direction of fast diffusion can be adjusted by a scalar parameter of the dynamics, e.g. the amplitude of the symmetric driving force. Our examples are (i) the dynamics of an underdamped Brownian particle in a one dimensional periodic potential, published in [1, 2] and verified experimentally in [3], (ii) the dynamics of an overdamped Brownian particle in a two dimensional square lattice, published in [4], and (iii) the dynamics of two interacting Brownian particles, i.e. a dimer, in a one dimensional periodic potential. Lastly, we show how lattice potentials can be exploited to sort molecules that differ only by their chirality,published in [5]. Using spontaneous breaking of chiral symmetry, the two chiral partners can be directed into orthogonal directions under the influence of a constant bias force in a symmetry direction of the lattice and into opposite directions if a periodic driving force is applied.
[1] D. Speer, R. Eichhorn, and P. Reimann, "Brownian motion: Anomalous response due to noisy chaos," Europhys. Lett., vol. 79, p. 10005, 2007.
[2] D. Speer, R. Eichhorn, and P. Reimann, "Transient chaos induces anomalous transport properties of an underdamped Brownian particle," Phys. Rev. E, vol. 76, p. 051110, 2007.
[3] J. Nagel, D. Speer, T. Gaber, A. Sterck, R. Eichhorn, P. Reimann, K. Ilin,M. Siegel, D. Koelle, and R. Kleiner, "Observation of negative absolute resistance in a Josephson junction, "Phys. Rev. Lett., vol. 100, p. 217001, 2008.
[4] D. Speer, R. Eichhorn, and P. Reimann, "Directing Brownian motion on a periodic surface," Phys. Rev. Lett., vol. 102, p. 124101, 2009.
[5] D. Speer, R. Eichhorn, and P. Reimann, "Exploiting lattice potentials for sorting chiral particles," Phys. Rev. Lett., vol. 105, p. 090602, 2010
Harfe und Speer
No full textHARFE UND SPEER
Harfe und Speer ( - )
Cover ( - )
Titelseite ([1])
Erstes Buch. ([3])
An Alexander den Welterretter ([5])
Napoleons Flucht. (9)
Jägerlied. (12)
Aufruf zur Rache. (14)
Ausforderung an Bonaparte. (16)
Jagd- und Schlachtlied. (17)
An Deutschlands Fürsten. (19)
Lied der Rache an Deutschlands Eichen. (21)
Marschlied. Für Deutsche Krieger. (24)
Der Bund der Rache. (25)
Zweites Buch. (27)
An Friedrich Wilhelm, den Rächer Deutschlands. (29)
An mein Vaterland und meine Brüder. (33)
Trinklied für Krieger. (35)
Moreau's Tod. (37)
Abschiedslied eines Kriegers an Weib und Kind. (41)
Die Stimmen der Todten von Leipzig und Hanau an Europa's Fürsten und Völker. (43)
Die Menschheit und die Hölle. (49)
Dem Könige zu seiner Rückkehr. (52)
Dem Frieden. (55)
Dem Frauen- und Mädchenverein zu Berlin. (59)
Einlage: Zettel ([1]r
Realizability of point processes
No full textThere are various situations in which it is natural to ask whether a given collection of k functions, ρ j (r 1,...,r j ), j=1,...,k, defined on a set X, are the first k correlation functions of a point process on X. Here we describe some necessary and sufficient conditions on the ρ j 's for this to be true. Our primary examples are X=Rd , X=Zd , and X an arbitrary finite set. In particular, we extend a result by Ambartzumian and Sukiasian showing realizability at sufficiently small densities ρ 1(r). Typically if any realizing process exists there will be many (even an uncountable number); in this case we prove, when X is a finite set, the existence of a realizing Gibbs measure with k body potentials which maximizes the entropy among all realizing measures. We also investigate in detail a simple example in which a uniform density ρ and translation invariant ρ 2 are specified on Z; there is a gap between our best upper bound on possible values of ρ and the largest ρ for which realizability can be established. © 2007 Springer Science+Business Media, LLC
Mathematics
No full text"Inservice education"--Final (unnumbered) p. of each document.; Includes bibliographical references.T. Teaching mathematics : elementary & middle grades / prepared by Steven P. Meiring (19 p.) -- K. Kindergarten mathematics / principal authors, James B. Wesson, Steven P. Meiring (18 p.) -- 1. First grade mathematics (18 p.) ; 2. Second grade mathematics (15 p.) ; 3. Third grade mathematics (18 p.) / principal author, C. Winston Smith, Jr. -- 4. Fourth grade mathematics (21 p.) ; 5. Fifth grade mathematics (19 p.) / principal author, James B. Wesson -- 6. Sixth grade mathematics (19 p.) ; 7. Seventh grade mathematics (23 p.) / principal author, William R. Speer -- 8. Eighth grade mathematics (19 p.) ; 8E. Eighth grade enrichment mathematics / principal author, James E. Schultz.A series of eleven monographs describing mathematics learning in the elementary and middle grades. These documents identify appropriate outcomes for each grade level and discuss teaching methods for helping students achieve those outcomes
LAS_WISpaper-appendix – Supplemental material for Early L2 Spoken Word Recognition Combines Input-Based and Knowledge-Based Processing
No full textSupplemental material, LAS_WISpaper-appendix for Early L2 Spoken Word Recognition Combines Input-Based and Knowledge-Based Processing by Seth Wiener, Kiwako Ito and Shari R Speer in Language and Speech</p
The truncated moment problem on N0
No full textWe find necessary and sufficient conditions for the existence of a probability measure on N0, the nonnegative integers, whose first n moments are a given n-tuple of nonnegative real numbers. The results, based on finding an optimal polynomial of degree n which is nonnegative on N0 (and which depends on the moments), and requiring that its expectation be nonnegative, generalize previous results known for n=1, n=2 (the Percus–Yamada condition), and partially for n=3. The conditions for realizability are given explicitly for n≤5 and in a finitely computable form for n≥6. We also find, for all n, explicit bounds, in terms of the moments, whose satisfaction is enough to guarantee realizability. Analogous results are given for the truncated moment problem on an infinite discrete semi-bounded subset of R
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