1,754 research outputs found
Educating English Language Learners: Grantmaking Strategies For Closing America's Other Achievement Gap
This study draws upon two sources of data: an online survey and telephone interviews. In spring 2012, GFE selected 138 grantmaking organizations to participate in an online survey. The sample was composed primarily of GFE members who had indicated in GFE's 2010 and 2011 benchmarking surveys that they made grants to English learners or immigrants, but it was supplemented with funders identified as significant investors in English learners by Grantmakers for Children, Youth and Families and Grantmakers Concerned with Immigrants and Refugees. Fifty-seven grantmakers completed responses to the survey, representing diverse grantmaking entities including family foundations, private foundations, community foundations and corporate funders. Researchers supplemented the survey by conducting in-depth phone interviews with 24 survey respondents selected to represent a range of foundation sizes, organization types, geographic regions and ELL funding priorities. The study also convened an Advisory Committee comprising GFE members who are experienced funders of English learners. The advisory committee offered advice on research design, interpretation of research findings, and supplemental resources (listed in report appendix)
Strong inclination pacing of climate in Late Triassic low latitudes revealed by the Earth-Saturn tilt cycle
Gravitational interactions among masses in the solar system are recorded in Earthâs paleoclimate history because variations in the geometry of Earthâs orbit and axial orientation modulate insolation. However, astronomical models are unreliable before ~50 Ma due to the chaotic nature of the solar system and therefore must be constrained using geological observations. Here, we use environmental proxies from paleo-tropical Late Triassic lake deposits of the Newark Rift Basin to identify and tune to previously undescribed strong variations in orbital inclination. Tuning to the 173 kyr Earth-Saturn inclination cycle, theoretically stable due to the high mass of Saturn, reveals both other predicted inclination cycles and previously reported eccentricity cycles. Slight, complementary offsets in the eccentricity and inclination cycles shown by the Earth-Saturn (s3-s6) and Venus-Jupiter (g2-g5) tunings may be due to chaotic variations of the secular fundamental frequencies in Earthâs nodal and Venusâs perihelion orbital precessions. The strength of the inclination cycles suggests that the Earth system modulates orbital pacing of climate and provides a mechanism to further constrain astronomical solutions for solar system dynamics beyond the ~50 Ma limit of predictabilit
Find (Y)our Place in the Universe: Humanizing Curriculum Through Unit (Re)Design
In this article, the authors share a revised unit from their district\u27s core language arts program that utilizes areas of multimodality, criticality, and layered texts. The authorsâ goal is to make the content accessible for all students while also incorporating marginalized perspectives. The authors describe how they drew on Dr. Gholdy Muhammadâs (2020) Culturally Responsive Framework to provide a diverse unit of study that leverages the multimodal possibilities within layered text sets. The authors then emphasize the importance of humanizing the content and modes in which it is presented in order to foster a critical stance towards text
Castelnuovo-Mumford regularity by approximation
The Castelnuovo-Mumford regularity of a module gives a rough measure of its
complexity. We bound the regularity of a module given a system of approximating
modules whose regularities are known. Such approximations can arise naturally
for modules constructed by inductive combinatorial means. We apply these
methods to bound the regularity of ideals constructed as combinations of linear
ideals and the module of derivations of a hyperplane arrangement as well as to
give degree bounds for invariants of finite groups.Comment: Sections 2 and 3 revised to incorporate changes in definitions and
terminology.Typos corrected and references updated. 20 pages, AMS LaTe
Recommendations for Higher Educational Supports for Students Experiencing Homelessness in the Southeastern United States
Homelessness creates tall barriers for many college students pursuing postsecondary education. It can also come along with many secondary difficulties, such as lack of family support, histories of abuse, trauma, neglect, and systemic poverty, all of which are added challenges when pursuing higher education. These barriers can limit access to higher education, making it difficult to remain enrolled, let alone graduate, and creating long-term negative effects such as long-term economic instability and a lack of self-sufficiency.
The recent COVID-19 pandemic has only exacerbated many of these existing barriers, including low enrollment [1] and a decrease in financial aid completion [2]. New research from the National Student Clearinghouse Research Center found that of the â2.6 million students who entered college as first-time freshmen in the fall of 2019, only 74 percent returned for their second year â an unprecedented two percentage point drop, the lowest level since 2012â. However, the situation is more dire for low-income and minority students, and they have seen the most dramatic enrollment and persistence drops [3].
Historically, very few states have offered higher education policies that support homeless college students; however, states are beginning to respond because of the recent increase in student homelessness. The most recent example of new legislation supporting these students is Georgia Senate Bill 107, passed in May 2021, which amended Title 20 of the Official Code of Georgia Annotated relating to the postsecondary education of homeless and foster youth. Specifically, this bill provides: Tuition and room and board waivers at two-year colleges for foster care students In-state tuition at two- and four-year colleges for students under the age of 24 and experiencing homelessness Provisions for university staff to determine homelessness status, like the McKinney-Vento Act [4].
Considering the increase in the number of homeless students, states should focus on policies to support these students\u27 successful completion of a college degree. Such policies would be good for students, institutions, and state governments, as college graduates contribute more in taxes and are less reliant on government services [5]. This paper will examine policies and practices in seven southeastern states, draw conclusions, and make recommendations for higher education institutions, policymakers, and philanthropy.https://digitalcommons.kennesaw.edu/careresources/1003/thumbnail.jp
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Synchrony between the Central Atlantic magmatic province and the Triassic-Jurassic mass-extinction event?
We present new data and a synthesis of cyclostratigraphic, lithostratigraphic, biostratigraphic, and published magnetostratigraphic and basalt geochemical data from eastern North America and Morocco in an attempt to clarify the temporal relationship between the TriassicâJurassic mass extinction (⌠202 Ma) and Earth's largest sequence of continental flood basalts, the Central Atlantic magmatic province (CAMP). Newly discovered zones of reverse polarity within CAMP flow sequences of Morocco have been hypothesized by Marzoli et al. [Marzoli, A., Bertrand, H., Knight, K.B., Cirilli, S., Buratti, N., VĂ©rati, C., Nomade, S., Renne, P.R., Youbi, N., Martini, R., Allenbach, K., Neuwerth, R., Rapaille, C., Zaninetti, L., Bellieni, G., 2004. Synchrony of the Central Atlantic magmatic province and the TriassicâJurassic boundary climatic and biotic crisis. Geology 32, 973â976.] and Knight et al. [Knight, K.B., Nomade, S., Renne, P.R., Marzoli, A., Betrand, H., Youbi, N., 2004. The Central Atlantic Magmatic Province at the TriassicâJurassic boundary: paleomagnetic and 40Ar/30Ar evidence from Morocco for brief, episodic volcanism. Earth and Planetary Science Letters 228, 143â160.] as correlates of a very short, uppermost Triassic age reverse chron in the Newark basin, thus suggesting that much of the Moroccan CAMP was synchronous with or predates the TriassicâJurassic boundary. Here, however, we explain these apparent reverse polarity zones as possible correlatives of poorly sampled lower Jurassic basalt flow sequences and overlying strata in eastern North America and lower Jurassic reverse polarity sequences recognized by others in the Paris basin. A revised Milankovitch cyclostratigraphy based on new core and field data constrains the duration of eastern North America basaltic flows to ⌠610 ky after the TriassicâJurassic palynological turnover event. Palynological data indicates correlation of the initial carbon isotopic excursion of Hesselbo et al. [Hesselbo, S.P., Robinson, S.A., Surlyk, F., Piasecki, S., 2002. Terrestrial and marine extinction at the TriassicâJurassic boundary synchronized with major carbon-cycle perturbation: a link to initiation of massive volcanism. Geology 30, 251â254.] at St. Audrie's Bay to the palynological turnover event and vertebrate extinction level in eastern North America, suggesting a revised magnetostratigraphic correlation and robust carbon isotopic tests of the MarzoliâKnight hypothesis. We conclude that as yet there are no compelling data showing that any of the CAMP predated or was synchronous with the TriassicâJurassic extinction event
Synchrony between the Central Atlantic magmatic province and the Triassic-Jurassic mass-extinction event? Reply to Marzoli et al.
We are very pleased with the attention, long overdue, that the TriassicâJurassic boundary and associated events, such as the CAMP, are receiving. This can only lead to greater specificity of hypotheses and greater understanding in the long run, and it is worth emphasizing some broad areas of agreement. Marzoli et al. (2008-this volume) points out the closeness in time of CAMP and TrâJ extinctions, and on this we all agree. We also agree that the systematic differences among different isotopic systems used for dating is a challenge to determining the relative timing of events dated with different techniques. This problem, however, seem to be fading as high-precision single-crystal UâPb dates (206Pb/238U) are available from a variety of tuffs interbedded with marine strata as well as the North Mountain Basalt of Nova Scotia, which lies above the palynological TriassicâJurassic extinction event in Nova Scotia. Schoene et al. (2006) obtained an age of 201.27 ± 0.03 Ma from this basalt, which is very close to an age of 201.5 Ma for a tuff 1 m above the last local occurrence of the topmost Triassic guide-fossil, the ammonite Choristoceras in a marine section in Peru (Schaltegger et al., 2007), presumably very close to the TriassicâJurassic extinction event. Schaltegger et al. (2007) also obtained an age of 199.5 Ma for the HettangianâSinemurian boundary from the latter section. Consistent with these ages, PĂĄlfy and Mundil (2006) obtained ages of 200.6 ± 0.3 Ma for an ash layer in ammonite-bearing Middle Hettangian marine sediments in, Alaska, and 198.0 ± 0.6 Ma for a tuff layer in Early Sinemurian sediments in Hungary. These dates are not compatible with the multi-crystal age for the TriassicâJurassic boundary of 199.6 ± 0.3 Ma of PĂĄlfy and Mundil (2006), a fact recognized by PĂĄlfy and Mundil (2006). Thus, we are in complete agreement that the TriassicâJurassic extinction event is extremely close in time to the onset of the CAMP. The question is, "are any of the known flows of the CAMP actually at or before this extinction event?". That is the key issue dealt with by Whiteside et al. (2007), and it is a possibility that we recognize as completely plausible, but not yet demonstrated. It is in that spirit of general agreement that we reply to Marzoli et al.'s, comment. We note, however, that their comment touches on far too many points to adequately address in this reply, and we chose to focus our response on their most substantive issues, recalling that our paper was focusing on the testable aspects of their overall hypothesis. We deal with their criticisms in the order they present them
Brain abscess and stroke in children and adults with hereditary hemorrhagic telangiectasia: Analysis of a large national claims database
BACKGROUND AND OBJECTIVES: Hereditary hemorrhagic telangiectasia (HHT) is an inherited disease associated with pathogenic variants in transforming growth factor-ÎČ signaling pathway-related genes, resulting in abnormal vascular development in various organs. Brain arteriovenous malformations (AVMs) may lead to intracranial hemorrhage, and brain abscess or ischemic stroke may result from right to left shunting via pulmonary AVMs. We aimed to investigate the risk for these severe complications in both adults and children with HHT.
METHODS: We conducted a case-control study among participants aged 1-64 years in the MarketScan Commercial (2006-2019) and Multistate Medicaid Databases (2011-2019). We identified cases with HHT using
RESULTS: A total of 5,796 patients with HHT, of whom 588 were children (age younger than 16 years), were matched with 57,960 controls. There was an increased incidence of brain abscesses in HHT cases compared with controls, with an RR of 35.6 (95% CI 15.4-82.5). No brain abscesses were recorded in children aged 15 years or younger. Hemorrhagic strokes/subarachnoid hemorrhages were more common in HHT cases, with an RR of 4.01 (95% CI 2.8-5.7) in adults and 60.2 (95% CI 7.2-500.4) in children. Ischemic strokes were also more common in cases, with an RR of 3.7 (95% CI, 3.0-4.5) in adults and 70.4 (95% CI 8.7-572.3) in children.
DISCUSSION: We observed a much higher incidence of severe CNS vascular complications in patients with HHT, particularly in children. Although a higher incidence of brain abscesses was noted in adult patients with HHT, no brain abscesses were recorded in children, a result that may be considered when surveillance recommendations for this population are revisited
Maternal Antibody Transfer in Yellow-legged Gulls
International audienc
Morally Respectful Listening and its Epistemic Consequences
What does it mean to listen to someone respectfully, that is, insofar as they are due recognition respect? This paper addresses that question and gives the following answer: it is to listen in such a way that you are open to being surprised. A specific interpretation of this openness to surprise is then defended
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