2,162,459 research outputs found
Metastable Cosmic Strings in Realistic Models
We investigate the stability of the electroweak Z-string at high
temperatures. Our results show that while finite temperature corrections can
improve the stability of the Z-string, their effect is not strong enough to
stabilize the Z-string in the standard electroweak model. Consequently, the
Z-string will be unstable even under the conditions present during the
electroweak phase transition. We then consider phenomenologically viable models
based on the gauge group and show
that metastable strings exist and are stable to small perturbations for a large
region of the parameter space for these models. We also show that these strings
are superconducting with bosonic charge carriers. The string superconductivity
may be able to stabilize segments and loops against dynamical contraction.
Possible implications of these strings for cosmology are discussed.Comment: 24 pages, 2 figures (available on request); HUTP-92/A032,
Fermilab-Pub-92/228-
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Teacher Evaluations in the Special Education Setting: Voices from the Field
National policy mandates have placed greater accountability on districts and schools to improve the outcomes of every student, including students with disabilities. Teacher evaluation systems that accurately identify effective teachers and their impact on student learning have resulted in the widespread design and implementation of new teacher evaluation systems. Nevertheless, limited exploration related to the evaluation of special education teachers exists. Using a qualitative, multi-case study research design, we sought to gain insight into the perceptions and experiences of special education teachers and administrators to better understand (a) the relationship between teacher evaluation and teacher effectiveness; (b) the ways in which educators approach the challenges of applying teacher evaluation systems for special education teachers; and (c) the ways in which teacher evaluation processes support the professional growth and development of special education teachers. The challenges involved in evaluating special education teachers with a uniform teacher evaluation protocol instrument are presented. The need to be able to accurately appraise special education teachers within an inclusive classroom setting, apply criteria from the observation protocol to special education students, and lack of appraisers� knowledge of the roles and expertise of special education teachers were identified. Recommendations for improvement are provided.Educatio
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Introduction to Volume 4, Issue 1: A Highlight on Special Education Educators
IntroductionEducatio
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Introduction to the Special Issue: Neoliberalism in Education
Special Issue: Neolibaralism in EducationEducatio
Texas
Correspondence from 1902-1904 to James P. Bree, the National Secretary of the Ancient Order of Hibernians, New Haven, Connecticut. The correspondence, concerning Alabama AOH business, includes letters primarily from State President, J.A. McAleer from Dallas and State Secretary P.J. Sculley from San Antonio.https://digitalcommons.sacredheart.edu/irish_hiberus/1044/thumbnail.jp
Integrated urban water management in Texas: a review to inform a one water approach for the future
Texas has considerable experience grappling with historic droughts as well as flooding
associated with tropical storms and hurricanes, yet the State’s water management challenges
are projected to increase. Urban densification, increased frequency and severity of droughts
and floods, aging infrastructure, and a management system that is not reflective of the true
cost of water all influence water risk. Integrated urban water management strategies, like ‘One
Water’, represent an emerging management paradigm that emphasizes the interconnectedness
of water throughout the water cycle and capitalizes on opportunities that arise from this
holistic viewpoint. Here, we review water management practices in five Texas cities and
examine how the One Water approach could represent a viable framework to maintain a
reliable, sustainable, and affordable water supply for the future. We also examine financial and
business models that establish a foundational pathway towards the ‘utility of the future’ and
the One Water paradigm more broadly
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2017 Texas Bays and Estuaries Meeting
Program for the 2017 Texas Bays and Estuaries Meeting held in Port Aransas, Texas, April 12-13, 2017.Coastal Bend Bays & Estuaries Program, Coastal Bend Bays Foundation, The University of Texas Marine Science Institute, Sea Grant Texas at Texas A&M University, Harte Research Institute for Gulf of Mexico Studies, and Mission Aransas National Estuarine Research Reserve.Marine Scienc
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Change in number of physicians providing abortion care in Texas after HB2
Population Research Cente
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Density of abortion facilities in the four largest US cities
Population Research Cente
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