To be or not to be a Math Person: Math Identity Dissonance in Ninth Grade Students

What student-level variables (e.g., demographic, attitudes toward math, attitudes toward school, and prior math achievement) affect the construction of a dissonant math identity? Research shows that the number of science, technology, engineering, and math (STEM) occupations is growing twice as fast as all other industries. Further, math achievement, more than any other academic factor, determines whether students have access to STEM majors in college and thus pursue STEM careers. Concomitantly, numerous studies have shown that the ways in which students identify with mathematics have a profound impact on their immediate performance and future decisions to pursue math and math-related majors and careers. Employing the base year of the High School Longitudinal Study of 2009 (HSLS: 09), a nationally representative sample of over 21,000 ninth grade students, this dissertation explores factors that contribute to math identity dissonance (MID). Math identity dissonance is defined as the difference between a student\u27s personal math identity (i.e., the degree to which she sees herself as a math person) and her social math identity (i.e., the degree to which she believes others see her as a math person). While MID has not been thoroughly explored as a theoretical construct in previous research, using it in conjunction with similar theories (e.g., academic mindsets, stereotype threat, and communities of practice) will offer a nuanced window into students\u27 distinct struggles identifying with mathematics. Using multivariate analyses to better understand factors that contribute to MID, this study informs education research and practice aimed at improving inclusive frameworks for all students of mathematics

Reinforced circular holes in bending with shear.

http://www.archive.org/details/reinforcedcircul00hellU.S. Navy (U.S.N.) author

Heavy monopole potential in gluodynamics

We discuss predictions for the interaction energy of the fundamental monopoles in gluodynamics introduced via the 't Hooft loop. At short distances, the heavy monopole potential is calculable from first principles. At larger distances, we apply the Abelian dominance models. We discuss the measurements which would be crucial to distinguish between various models. Non-zero temperatures are also considered. Our predictions are in qualitative agreement with the existing lattice data. We discuss further measurements which would be crucial to check the model.Comment: 3 pages, 1 figure, Lattice2001(confinement

Consistent holographic description of boost-invariant plasma

Prior attempts to construct the gravity dual of boost-invariant flow of N=4 supersymmetric Yang-Mills gauge theory plasma suffered from apparent curvature singularities in the late time expansion. This Letter shows how these problems can be resolved by a different choice of expansion parameter. The calculations presented correctly reproduce the plasma energy-momentum tensor within the framework of second order viscous hydrodynamics.Comment: Title changed; the coordinate transformation between FG and EF coordinates elucidated; version published in PR

The Lantern Vol. 26, No. 3, June 1958

• Reflections • Recession: A Matter of Opinion • His Name Was... • The Outward Bound • A Champion There Was • Notes from the Sukura • Undauntedhttps://digitalcommons.ursinus.edu/lantern/1075/thumbnail.jp

Rechtspopulismus und organisierte Zivilgesellschaft

Rechtspopulist*innen intervenieren in die Zivilgesellschaft, wobei sie die etablierten Akteure auf der Basis ihrer korporatistischen Einbindung als Teil des Establishments angreifen und bestehende Konflikte nach populistischer Logik umdeuten. Die Reaktionen der zivilgesellschaftlichen Organisationen erfolgen situativ und changieren zwischen wertebezogener Abgrenzung und inhaltlicher Auseinandersetzung. Die Zivilgesellschaft ist herausgefordert, ihre inneren Widersprüche zu bearbeiten, um nicht als Einfallstor für, sondern als Schutzfaktor gegen Rechtspopulismus zu wirken

Scaling and Asymptotic Scaling in the SU(2) Gauge Theory

We determine the critical couplings for the deconfinement phase transition in $SU(2)$ gauge theory on $N_\tau \times N_\sigma^3$ lattices with $N_\tau = 8$ and 16 and $N_\sigma$ varying between 16 and 48. A comparison with string tension data shows scaling of the ratio $T_c / \sqrt{\sigma}$ in the entire coupling regime $\beta =2.30-2.75$, while the individual quantities still exhibit large scaling violations. We find $T_c / \sqrt{\sigma}=0.69(2)$. We also discuss in detail the extrapolation of $T_c / Lambda_{\rm{\bar{M} \bar{S}}}$ and $\sqrt{\sigma} / Lambda_{\rm{\bar{M}\bar{S}}}$ to the continuum limit. Our result, which is consistent with the above ratio, is $T_c / Lambda_{\rm{\bar{M}\bar{S}}} = 1.23(11)$ and $\sqrt{\sigma} / Lambda_{\rm{\bar{M}\bar{S}}} = 1.79(12)$. We also comment upon corresponding results for $SU(3)$ gauge theory and four flavour QCD.Comment: 27 pages with 9 postscript figures included. Plain TeX file (needed macros are included). BI-TP 92-26, FSU-SCRI-92-103, HLRZ-92-39 (Quote of UKQCD string tension, and accordingly Figs. 5 and 7a, plus a few typo's corrected.

A Novel Rapid DNA Microarray Assay Enables Identification of 37 Mycoplasma Species and Highlights Multiple Mycoplasma Infections

Mycoplasmas comprise a conglomerate of pathogens and commensals occurring in humans and animals. The genus Mycoplasma alone contains more than 120 species at present, and new members are continuously being discovered. Therefore, it seems promising to use a single highly parallel detection assay rather than develop separate tests for each individual species. In this study, we have designed a DNA microarray carrying 70 oligonucleotide probes derived from the 23S rRNA gene and 86 probes from the tuf gene target regions. Following a PCR amplification and biotinylation step, hybridization on the array was shown to specifically identify 31 Mycoplasma spp., as well as 3 Acholeplasma spp. and 3 Ureaplasma spp. Members of the Mycoplasma mycoides cluster can be recognized at subgroup level. This procedure enables parallel detection of Mollicutes spp. occurring in humans, animals or cell culture, from mono- and multiple infections, in a single run. The main advantages of the microarray assay include ease of operation, rapidity, high information content, and affordability. The new test's analytical sensitivity is equivalent to that of real-time PCR and allows examination of field samples without the need for culture. When 60 field samples from ruminants and birds previously analyzed by denaturing-gradient gel electrophoresis (DGGE) were tested by the microarray assay both tests identified the same agent in 98.3% of the cases. Notably, microarray testing revealed an unexpectedly high proportion (35%) of multiple mycoplasma infections, i.e., substantially more than DGGE (15%). Two of the samples were found to contain four different Mycoplasma spp. This phenomenon deserves more attention, particularly its implications for epidemiology and treatment