14,452 research outputs found
Losing by Degrees: Rising Costs and Public Disinvestment in Higher Education
Washington's public colleges and universities are a critical resource for building a prosperous future for our state and fulfilling the promise of opportunity for all. Without strong public institutions of higher education, our youth will be stymied in striving to reach their full potential, and our state will not remain competitive in the global economy. Yet over the past two decades, the state's financial support for higher education has not kept pace with population growth and rising costs. Public institutions differ from private colleges and universities in their commitment to providing access to higher education and improving the well-being of all state residents. The University of Washington, in its statement of values, describes "Being Public" as follows: "As a public university we are deeply committed to serving all our citizens. We collaborate with partners from around the world to bring knowledge and discovery home to elevate the quality of lives of Washingtonians." As centers of education, research, and innovation, public colleges and universities spur economic development throughout the state. Washington's business leaders have long expressed the need for a more highly trained workforce, with more public investment in every level of education, from preschool through graduate study. Governor Christine Gregoire said in her 2009-11 Budget Proposal, "Washington's public colleges and universities are the economic engine that drives the state's economy and will drive our recovery." To build a strong foundation for Washington's future, we must increase public investment in higher education as a part of upgrading our whole public education system. Doing so will require identifying new sources of public revenue
Production of 92Nb, 92Mo, and 146Sm in the gamma-process in SNIa
The knowledge of the production of extinct radioactivities like 92Nb and
146Sm by photodisintegration processes in ccSN and SNIa models is essential for
interpreting abundances in meteoritic material and for Galactic Chemical
Evolution (GCE). The 92Mo/92Nb and 146Sm/144Sm ratios provide constraints for
GCE and production sites. We present results for SNIa with emphasis on nuclear
uncertainties.Comment: 6 pages, 4 figures, Proceedings of the 13th Symposium on Nuclei in
the Cosmos (NIC XIII), July 2014, Debrecen, Hungar
Liftable vector fields over corank one multigerms
In this paper, a systematic method is given to construct all liftable vector
fields over an analytic multigerm of
corank at most one admitting a one-parameter stable unfolding.Comment: 34 pages. In ver. 2, several careless mistakes for calculations in
Section 6 were correcte
Finite N Matrix Models of Noncommutative Gauge Theory
We describe a unitary matrix model which is constructed from discrete analogs
of the usual projective modules over the noncommutative torus and use it to
construct a lattice version of noncommutative gauge theory. The model is a
discretization of the noncommutative gauge theories that arise from toroidal
compactification of Matrix theory and it includes a recent proposal for a
non-perturbative definition of noncommutative Yang-Mills theory in terms of
twisted reduced models. The model is interpreted as a manifestly star-gauge
invariant lattice formulation of noncommutative gauge theory, which reduces to
ordinary Wilson lattice gauge theory for particular choices of parameters. It
possesses a continuum limit which maintains both finite spacetime volume and
finite noncommutativity scale. We show how the matrix model may be used for
studying the properties of noncommutative gauge theory.Comment: 17 pp, Latex2e; Typos corrected, references adde
Abundance Uncertainties Obtained With the PizBuin Framework For Monte Carlo Reaction Rate Variations
Uncertainties in nucleosynthesis models originating from uncertainties in
astrophysical reaction rates were estimated in a Monte Carlo variation
procedure. Thousands of rates were simultaneously varied within individual,
temperature-dependent errors to calculate their combined effect on final
abundances. After a presentation of the method, results from application to
three different nucleosynthesis processes are shown: the -process and
the s-process in massive stars, and the main s-process in AGB stars
(preliminary results). Thermal excitation of nuclei in the stellar plasma and
the combined action of several reactions increase the final uncertainties above
the level of the experimental errors. The total uncertainty, on the other hand,
remains within a factor of two even in processes involving a large number of
unmeasured rates, with some notable exceptions for nuclides whose production is
spread over several stellar layers and for s-process branchings.Comment: 8 pages, 4 figures; Proceedings of OMEG 2017, Daejeon, Korea, June
27-30, 2017; to appear in AIP Conf. Pro
Systematic study of the SO(10) symmetry breaking vacua in the matrix model for type IIB superstrings
We study the properties of the space-time that emerges dynamically from the
matrix model for type IIB superstrings in ten dimensions. We calculate the free
energy and the extent of space-time using the Gaussian expansion method up to
the third order. Unlike previous works, we study the SO(d) symmetric vacua with
all possible values of d within the range , and observe clear
indication of plateaus in the parameter space of the Gaussian action, which is
crucial for the results to be reliable. The obtained results indeed exhibit
systematic dependence on d, which turns out to be surprisingly similar to what
was observed recently in an analogous work on the six-dimensional version of
the model. In particular, we find the following properties: i) the extent in
the shrunken directions is given by a constant, which does not depend on d; ii)
the ten-dimensional volume of the Euclidean space-time is given by a constant,
which does not depend on d except for d = 2; iii) The free energy takes the
minimum value at d = 3. Intuitive understanding of these results is given by
using the low-energy effective theory and some Monte Carlo results.Comment: 33 pages, 10 figures; minor corrections, reference added. arXiv admin
note: substantial text overlap with arXiv:1007.088
Non-lattice simulation for supersymmetric gauge theories in one dimension
Lattice simulation of supersymmetric gauge theories is not straightforward.
In some cases the lack of manifest supersymmetry just necessitates cumbersome
fine-tuning, but in the worse cases the chiral and/or Majorana nature of
fermions makes it difficult to even formulate an appropriate lattice theory. We
propose to circumvent all these problems inherent in the lattice approach by
adopting a non-lattice approach in the case of one-dimensional supersymmetric
gauge theories, which are important in the string/M theory context.Comment: REVTeX4, 4 pages, 3 figure
Particle Energization in an Expanding Magnetized Relativistic Plasma
Using a 2-1/2-dimensional particle-in-cell (PIC) code to simulate the
relativistic expansion of a magnetized collisionless plasma into a vacuum, we
report a new mechanism in which the magnetic energy is efficiently converted
into the directed kinetic energy of a small fraction of surface particles. We
study this mechanism for both electron-positron and electron-ion (mi/me=100, me
is the electron rest mass) plasmas. For the electron-positron case the pairs
can be accelerated to ultra-relativistic energies. For electron-ion plasmas
most of the energy gain goes to the ions.Comment: 7 pages text plus 5 figures, accepted for publication by Physical
Review Letter
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