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Urban Fathers Asset Building – Final Report
The Urban Fathers Asset Building (UFAB) project demonstrated the potential benefits, as well as limitations, of an innovative nexus between the child support system, fatherhood programs, and the Assets for Independence (AFI) grant-funded services. UFAB was a collaborative initiative of the Texas Office of the Attorney General (OAG), Baylor College of Medicine’s Teen Health Clinic, Covenant Community Capital Corporation (the local AFI grantee), and RAISE Texas, the statewide association of AFI grantees. This Final Report summarizes UFAB’s operational features and outcomes; depicts the demonstration’s challenges and innovative responses; reviews the accomplishments of the ancillary projects supported by BAFF funds; and assesses the prospects for sustaining demonstration practices in the Houston area, as well as extending promising practices to other areas of the state.Texas Office of the Attorney GeneralRay Marshall Center for the Study of Human Resource
Insight Into Battery Cell Production and Battery Performance with Digital Twins and Operando Measurement Techniques
Lithium-ion batteries have been consecutively optimized in the past decades and are close to reach their maximum practical energy density. However, more insight into the relation of production parameters and battery performance is still required. Likewise, more and more methods – both model based and analytical – are developed to gain understanding of the physio-chemical interactions, which take place within the battery and how these affect performance and durability. In this talk, two examples for the model-based analysis of lithium ion batteries (numerical optimization of NMC cathode composition; fast charge of graphite anode) and one example for their advanced experimental analysis (acoustic emission scanning) will be presented. The underlying approaches and the potential of the methods will be outlined, and an outlook on their use in the context of battery recycling will be given. The tools presented can be further adapted to account for different cell chemistries / cell materials as well as different routes of manufacturing and different use cases of the battery cells
Probing technicolor theories with staggered fermions
One exciting possibility of new physics beyond the Standard Model is that the
fundamental Higgs sector is replaced by a strongly-interacting gauge theory,
known as technicolor. A viable theory must break chiral symmetry dynamically,
like in QCD, to generate Goldstone bosons which become the longitudinal
components of the W and Z. By measuring the eigenvalues of the Dirac operator,
one can determine if chiral symmetry is in fact spontaneously broken. We
simulate SU(3) gauge theory with n_s=2 and 3 staggered flavors in the
fundamental representation, corresponding to N_f=8 and 12 flavors in the
continuum limit. Although our first findings show that both theories are
consistent with dynamically broken chiral symmetry and QCD-like behavior,
flavor breaking effects in the spectrum may require further clarifications
before final conclusions can be drawn. We also compare various improved
staggered actions, to suppress this potentially large flavor breaking.Comment: 7 pages, 5 figures, talk presented at The XXVI International
Symposium on Lattice Field Theory, July 14 - 19, 2008, Williamsburg,
Virginia, US
New Higgs physics from the lattice
We report the first results from our comprehensive lattice tool set to
explore non-perturbative aspects of Higgs physics in the Standard Model. We
demonstrate in Higgs-Yukawa models that Higgs mass lower bounds and upper
bounds can be determined in lattice simulations when triviality requires the
necessity of a finite cutoff to maintain non-zero interactions. The vacuum
instability problem is investigated and the lattice approach is compared with
the traditional renormalization group procedure which sets similar goals to
correlate lower and upper Higgs mass bounds with the scale of new physics. A
novel feature of our lattice simulations is the use of Ginsparg-Wilson fermions
to represent the effects of Top quark loops in Higgs dynamics. The need for
chiral lattice fermions is discussed and the approach is extended to full
Top-Higgs-QCD dynamics. We also report results from our large analysis of
Top-Higgs Yukawa models to gain analytic insight and to verify our new lattice
tool set which is deployed in the simulations. The role of non-perturbative
lattice studies to investigate heavy Higgs particle scenarios is illustrated in
extensions of the Standard Model.Comment: 28 pages, based on contributions from K. Holland, J. Kuti, D.
Nogradi, and C. Schroeder at The XXV International Symposium on Lattice Field
Theory, July 30 - August 4 2007, Regensburg, German
Chiral symmetry breaking in fundamental and sextet fermion representations of SU(3) color
We report new results for lattice gauge theories with twelve fermion flavors
in the fundamental representation and two fermion flavors in the two-index
symmetric (sextet) representation of the SU(3) color gauge group. Both models
are important in searching for a viable composite Higgs mechanism in the Beyond
the Standard Model (BSM) paradigm. We subject both models to opposite
hypotheses inside and outside of the conformal window. In the first hypothesis
we test chiral symmetry breaking () with its Goldstone spectrum,
, the condensate, and several composite hadron states as
the fermion mass is varied in a limited range with our best effort to control
finite volume effects. Supporting results for from the running
coupling based on the force between static sources is also presented. In the
second test for the alternate hypothesis we probe conformal behavior driven by
a single anomalous mass dimension under the assumption of unbroken chiral
symmetry. Our results show very low level of confidence in the conformal
scenario.Comment: 14 pages, 12 figures. Based on talks presented by J.Kuti and
K.Holland at the XXVIII International Symposium on Lattice Field Theory,
Lattice2010, June 14-19, 2010, Villasimius, Ital
Chiral symmetry breaking in nearly conformal gauge theories
We present new results on chiral symmetry breaking in nearly conformal gauge
theories with fermions in the fundamental representation of the SU(3) color
gauge group. The number of fermion flavors is varied in an extended range below
the conformal window with chiral symmetry breaking () for all
flavors between and . To identify we apply
several methods which include, within the framework of chiral perturbation
theory, the analysis of the Goldstone spectrum in the p-regime and the spectrum
of the fermion Dirac operator with eigenvalue distributions of random matrix
theory in the \eps-regime. Chiral condensate enhancement is observed with
increasing when the electroweak symmetry breaking scale is held fixed
in technicolor language. Important finite-volume consistency checks from the
theoretical understanding of the rotator spectrum of the
-regime are discussed. We also consider these gauge theories at
inside the conformal window. The importance of understanding finite
volume, zero momentum gauge field dynamics inside the conformal window is
pointed out. Staggered lattice fermions with supressed taste breaking are used
throughout the simulations.Comment: 21 pages, 9 figures. Presented at the XXVII International Symposium
on Lattice Field Theory, July 26-31, 2009, Peking University, Beijin
Calculating the running coupling in strong electroweak models
One possibility for Beyond Standard Model physics is a new
strongly-interacting gauge theory. One way to determine if a non-abelian gauge
theory is QCD-like or conformal is to measure the running of the renormalized
gauge coupling. We define the renormalized coupling from Wilson loop ratios,
and measure these ratios via lattice simulations. We test this method in SU(3)
pure gauge theory and show some first results for simulations with dynamical
fermions in the fundamental representation.Comment: 7 pages, 5 figures. Presented at the XXVII International Symposium on
Lattice Field Theory, July 26-31, 2009, Peking University, Beijin
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