University of Wisconsin–Milwaukee

About: University of Wisconsin–Milwaukee is a education organization based out in Milwaukee, Wisconsin, United States. It is known for research contribution in the topics: Population & Gravitational wave. The organization has 11839 authors who have published 28034 publications receiving 936438 citations. The organization is also known as: UWM & University of Wisconsin-Milwaukee.

High-Stakes Accountability in Urban Elementary Schools: Challenging or Reproducing Inequality?

Abstract: In this article, the authors use data from interviews and observations in four urban elementary schoolsFtwo high-performing and two probation schoolsFto examine how schools respond to high-stakes accountability policies. The authors show that school responses to high-stakes accountability depend on the schools’ accountability status. In probation schools, responses focus narrowly on complying with policy demands, focusing on improving the performance of certain students, within benchmark grades, and in certain subject areas. In contrast, higher performing schools emphasize enhancing the performance of all students regardless of grade level and across all subject areas. Given the concentration of poor students and students of color in the lowest performing schools, the authors conclude that issues of educational equity need to be given greater consideration in the implementation of high stakes accountability policies.

The role of outcome expectations and attitudes on decisions to seek professional help

Abstract: Two studies examined the predictors of seeking psychological services. Study 1 examined the role of attitudes in mediating the relationship between 11 psychological factors and intent to seek help for 3 psychological problems. The results demonstrated that (a) the psychological factors and attitudes predicted 62% of the variance in intent to seek help for interpersonal problems and 18% of the variance for drug problems and (b) attitudes toward counseling mediated most of the relationships between the different psychological factors and help-seeking intent. Study 2, in turn, demonstrated that (a) anticipated outcomes of talking with a counselor were associated with the use of psychological services and (b) anticipated risks of disclosing emotions were salient for those having experienced a distressing event.

The Zwicky Transient Facility: Data Processing, Products, and Archive

Abstract: The Zwicky Transient Facility (ZTF) is a new robotic time-domain survey currently in progress using the Palomar 48-inch Schmidt Telescope. ZTF uses a 47 square degree field with a 600 megapixel camera to scan the entire northern visible sky at rates of ~3760 square degrees/hour to median depths of g ~ 20.8 and r ~ 20.6 mag (AB, 5sigma in 30 sec). We describe the Science Data System that is housed at IPAC, Caltech. This comprises the data-processing pipelines, alert production system, data archive, and user interfaces for accessing and analyzing the products. The realtime pipeline employs a novel image-differencing algorithm, optimized for the detection of point source transient events. These events are vetted for reliability using a machine-learned classifier and combined with contextual information to generate data-rich alert packets. The packets become available for distribution typically within 13 minutes (95th percentile) of observation. Detected events are also linked to generate candidate moving-object tracks using a novel algorithm. Objects that move fast enough to streak in the individual exposures are also extracted and vetted. The reconstructed astrometric accuracy per science image with respect to Gaia is typically 45 to 85 milliarcsec. This is the RMS per axis on the sky for sources extracted with photometric S/N >= 10. The derived photometric precision (repeatability) at bright unsaturated fluxes varies between 8 and 25 millimag. Photometric calibration accuracy with respect to Pan-STARRS1 is generally better than 2%. The products support a broad range of scientific applications: fast and young supernovae, rare flux transients, variable stars, eclipsing binaries, variability from active galactic nuclei, counterparts to gravitational wave sources, a more complete census of Type Ia supernovae, and Solar System objects.

Shared generation of authenticators and signatures

Abstract: Often it is desired that the power to sign or authenticate messages is shared. This paper presents methods to collectively generate RSA signatures, provably secure authenticators and unconditionally secure authenticators. In the new schemes, l individuals are given shares such that k ≤ l are needed to generate a signature (authenticator) but less than k can not. When the k people have finished signing (authenticating), nobody can perform an impersonation or substitution attack. These schemes are called threshold signature (authentication) schemes. Clearly these schemes are better than each of the k individuals sending a separate authenticator for each message or if each of the k individuals each send their share to a “trusted” person who will sign for them.