200 research outputs found
Promoting Parent Involvement
The purpose of this action research project was to find out parents’ attitudes and desires to increase involvement opportunities through the home and/or school setting in order to improve the home-school relationship. Parents of students in a 3-6 year old Montessori classroom at a private school were asked to complete a parent involvement survey, attitude scale, and a parent involvement log in order to analyze current parent involvement. Data showed that the parents desire specific information as events and parent involvement opportunities occur, given verbally, in writing, and electronically, rather than an overview of the whole school year given in September. Infusing the Montessori philosophy of the classroom and school into the home was sought after by all families who participated in this action research project. Further research could center on different modes of involvement such as the use of photographs and video, and increased resources for parents
The upper triangular solutions to the three-state constant quantum Yang-Baxter equation
In this article we present all nonsingular upper triangular solutions to the
constant quantum Yang-Baxter equation
in the three state
case, i.e. all indices ranging from 1 to 3. The upper triangular ansatz implies
729 equations for 45 variables. Fortunately many of the equations turned out to
be simple allowing us to start breaking the problem into smaller ones. In the
end we had a total of 552 solutions, but many of them were either inherited
from two-state solutions or subcases of others. The final list contains 35
nontrivial solutions, most of them new.Comment: 24 Pages in LaTe
Integrability of the Wess_Zumino-Witten model as a non-ultralocal theory
We consider the 2--dimensional Wess--Zumino--Witten (WZW) model in the
canonical formalism introduced in a previous paper by two of us. Using an
-- matrix approach to non--ultralocal field theories we find the Poisson
algebra of monodromy matrices and of conserved quantities with a new,
non--dynamical, matrix.Comment: Revised version. 3 references added. 13 pages, latex, no figure
Classification of real three-dimensional Lie bialgebras and their Poisson-Lie groups
Classical r-matrices of the three-dimensional real Lie bialgebras are
obtained. In this way all three-dimensional real coboundary Lie bialgebras and
their types (triangular, quasitriangular or factorizable) are classified. Then,
by using the Sklyanin bracket, the Poisson structures on the related
Poisson-Lie groups are obtained.Comment: 17 page
On the Hopf algebras generated by the Yang-Baxter R-matrices
We reformulate the method recently proposed for constructing quasitriangular
Hopf algebras of the quantum-double type from the R-matrices obeying the
Yang-Baxter equations. Underlying algebraic structures of the method are
elucidated and an illustration of its facilities is given. The latter produces
an example of a new quasitriangular Hopf algebra. The corresponding universal
R-matrix is presented as a formal power series.Comment: 10 page
Hidden Quantum Group Symmetry in the Chiral Model
We apply the SL(2,C) lattice Kac-Moody algebra of Alekseev, Faddeev and
Semenov-Tian-Shansky to obtain a new lattice description of the SU(2) chiral
model in two dimensions. The system has a global quantum group symmetry and it
can be regarded as a deformation of two different theories. One is the
nonabelian Toda lattice which is obtained in the limit of infinite central
charge, while the other is a nonstandard Hamiltonian description of the chiral
model obtained in the continuum limit.Comment: Latex file, 23 page
Hyperthermia, Thermal Injuries, and Death from a Forced Convection Heat Source: A Case Report and Experimental Model
Heatâ related deaths of children are most often encountered in the context of enclosed vehicles in summer months. Deviating from this, a 16â monthâ old boy was found unresponsive in a stroller that was placed adjacent to a space heater during midâ winter. The cause of death was hyperthermia and thermal injuries. Manner of death determination was difficult due to alleged surrounding circumstances. To understand the timeâ course of this child’s injuries, a child death scene investigation was performed; the stroller and space heater were recovered. In a reâ enactment of the events, a slaughtered pig approximating the child’s size was warmed using a water bath and placed in the stroller beside the space heater. Cutaneous temperature measurements showed rapid initial temperature rise with subsequent steady increases. Tanning of the skin was seen on periodic direct observations. Internal temperature monitoring illustrated steady increases. This experiment was essential in classifying the manner of death as homicide.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/136740/1/jfo13307_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/136740/2/jfo13307.pd
Integrable Supersymmetry Breaking Perturbations of N=1,2 Superconformal Minimal Models
We display a new integrable perturbation for both N=1 and N=2 superconformal
minimal models. These perturbations break supersymmetry explicitly. Their
existence was expected on the basis of the classification of integrable
perturbations of conformal field theories in terms of distinct classical KdV
type hierarchies sharing a common second Hamiltonian structure.Comment: 10 pages (harvmac), LAVAL PHY-20-9
Exact conserved quantities on the cylinder I: conformal case
The nonlinear integral equations describing the spectra of the left and right
(continuous) quantum KdV equations on the cylinder are derived from integrable
lattice field theories, which turn out to allow the Bethe Ansatz equations of a
twisted ``spin -1/2'' chain. A very useful mapping to the more common nonlinear
integral equation of the twisted continuous spin chain is found. The
diagonalization of the transfer matrix is performed. The vacua sector is
analysed in detail detecting the primary states of the minimal conformal models
and giving integral expressions for the eigenvalues of the transfer matrix.
Contact with the seminal papers \cite{BLZ, BLZ2} by Bazhanov, Lukyanov and
Zamolodchikov is realised. General expressions for the eigenvalues of the
infinite-dimensional abelian algebra of local integrals of motion are given and
explicitly calculated at the free fermion point.Comment: Journal version: references added and minor corrections performe
From the braided to the usual Yang-Baxter relation
Quantum monodromy matrices coming from a theory of two coupled (m)KdV
equations are modified in order to satisfy the usual Yang-Baxter relation. As a
consequence, a general connection between braided and {\it unbraided} (usual)
Yang-Baxter algebras is derived and also analysed.Comment: 13 Latex page
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