Do Historically Black Institutions of Higher Education Confer Unique Advantages on Black Students: An Initial Analysis

Do Historically Black Institutions (HBIs)of Higher Education confer unique advantages on black students? Our paper consists of two separate analyses that begin 10 address this issue. The first uses data from the ?National Longitudinal Study of the High School Class of 1972? to ascertain whether black college students who attended HBIs in the early 1970s had higher graduation rates. improved early career labor market success and higher probabilities of going on 10 graduate or professional schools than their counterparts who attended other institutions. The econometric methods we employ control for the characteristics of the students. characteristics of the institutions, and the process by which black students decided 10 enroll (or were prevented from enrolling) in different types of institutions. We find that attendance at an HBI subswltia1ly enhanced the probability that a black student received a bachelor?s degree within seven years. however it had no apparent affect on the student's early career labor market success and probability of enrolling in post-college schooling. The second uses data from the 1987 to 1991 waves of the National Research Council's ?Survey of Earned Doctorates? to provide evidence on the patterns of black citizen doctorates with respect to their undergraduate institutions, their graduate institutions, and whether they achieved academic positions in major American liberal arts and research/doctorate institutions. Among the major findings is that black doctorates who received their undergraduate degrees at HBIs were much less likely to have received their graduate degree at a major research institution than those black doctorates who attended a major research or selective liberal arts undergraduate institution. Similarly, among the black doctorates who entered academic careers, those with graduate degrees from HBIs were less likely to be employed in major American research or liberal arts institutions than those who received their graduate degrees from major research institutions.

Design-Time Quantification of Integrity in Cyber-Physical-Systems

In a software system it is possible to quantify the amount of information that is leaked or corrupted by analysing the flows of information present in the source code. In a cyber-physical system, information flows are not only present at the digital level, but also at a physical level, and to and fro the two levels. In this work, we provide a methodology to formally analyse a Cyber-Physical System composite model (combining physics and control) using an information flow-theoretic approach. We use this approach to quantify the level of vulnerability of a system with respect to attackers with different capabilities. We illustrate our approach by means of a water distribution case study

Do Historically Black Colleges and Universities Enhance the College Attendance of African American Youths?

Recently, Historically Black Colleges and Universities (HBCUs) have become the center of intense policy debates. Do HBCUs enhance the college attendance of African American youths? Previous research has been inconclusive. Among other improvements, our study adjusts for the relative availability of HBCU enrollment opportunities in each state. We find that African Americans are more likely to choose HBCUs over other colleges if more HBCU openings are available. However, more HBCU openings don\u27t increase overall African American enrollment. As we have shown elsewhere, attendance at an HBCU does enhance African American students\u27 college graduation rates

Involuntary Particularism: What the Noahide Laws Tell Us about Citizenship and Alienage

This article argues that the Jewish picture of the Noahide laws, laws thought to apply to all non-Jews but particularly to those who would reside in a Jewish commonwealth, can shed light on how to balance a strong sense of citizenship with reasonable policies towards Lawful Permanent Residents. The article enunciates models for how to adapt the provisions of one legal system to another, shows that the Noahide system demanded that non-Jews accept fundamental aspects of a Jewish worldview in order to live among them, and then applies those lessons to argue for a reinvigorated view of American citizenship and a reconsideration of the meaning of lawful permanent residence

Effective field theory approach to Casimir interactions on soft matter surfaces

We utilize an effective field theory approach to calculate Casimir interactions between objects bound to thermally fluctuating fluid surfaces or interfaces. This approach circumvents the complicated constraints imposed by such objects on the functional integration measure by reverting to a point particle representation. To capture the finite size effects, we perturb the Hamiltonian by DH that encapsulates the particles' response to external fields. DH is systematically expanded in a series of terms, each of which scales homogeneously in the two power counting parameters: \lambda \equiv R/r, the ratio of the typical object size (R) to the typical distance between them (r), and delta=kB T/k, where k is the modulus characterizing the surface energy. The coefficients of the terms in DH correspond to generalized polarizabilities and thus the formalism applies to rigid as well as deformable objects. Singularities induced by the point particle description can be dealt with using standard renormalization techniques. We first illustrate and verify our approach by re-deriving known pair forces between circular objects bound to films or membranes. To demonstrate its efficiency and versatility, we then derive a number of new results: The triplet interactions present in these systems, a higher order correction to the film interaction, and general scaling laws for the leading order interaction valid for objects of arbitrary shape and internal flexibility.Comment: 4 pages, 1 figur

A Fourier transform for sheaves on Lagrangian families of real tori

We systematically develop a transform of the Fourier-Mukai type for sheaves on symplectic manifolds $X$ of any dimension fibred in Lagrangian tori. One obtains a bijective correspondence between unitary local systems supported on Lagrangian submanifolds of $X$ and holomorphic vector bundles with compatible unitary connections supported on complex submanifolds of the relative Jacobian of $X$ (suitable conditions being verified on both sides).Comment: Latex, 30 pages (in a4wide format), no figures. v2: Minor expository changes, typos corrected. v3: Final version to appear in two parts in J. Geom. Phy

Renormalization Group Treatment of Nonrenormalizable Interactions

The structure of the UV divergencies in higher dimensional nonrenormalizable theories is analysed. Based on renormalization operation and renormalization group theory it is shown that even in this case the leading divergencies (asymptotics) are governed by the one-loop diagrams the number of which, however, is infinite. Explicit expression for the one-loop counter term in an arbitrary D-dimensional quantum field theory without derivatives is suggested. This allows one to sum up the leading asymptotics which are independent of the arbitrariness in subtraction of higher order operators. Diagrammatic calculations in a number of scalar models in higher loops are performed to be in agreement with the above statements. These results do not support the idea of the na\"ive power-law running of couplings in nonrenormalizable theories and fail (with one exception) to reveal any simple closed formula for the leading terms.Comment: LaTex, 11 page

Sneutrino Dark Matter: Symmetry Protection and Cosmic Ray Anomalies

We present an R-parity conserving model of sneutrino dark matter within a Higgs-philic U(1)' extension of the minimal supersymmetric standard model. In this theory, the mu parameter and light Dirac neutrino masses are generated naturally upon the breaking of the U(1)' gauge symmetry. The leptonic and hadronic decays of sneutrinos in this model, taken to be the lightest and next-to-lightest superpartners, allow for a natural fit to the recent results reported by the PAMELA experiment.Comment: Revised to match the published version; 11 pages (2 column format), 1 table, 6 figures, to appear in PR

Extensions and rollbacks of US unemployment insurance benefits primarily affected how long people searched for work rather than job finding.

In 2010, the US government extended unemployment insurance benefits to a maximum of 99 weeks. This extension was rolled back in 2012 and 2013, and now no state has benefits available beyond the normal duration (26 weeks in general). In new research, Henry S. Farber, Jesse Rothstein, and Robert G. Valletta examine the impact of the extension and subsequent rollback of unemployment insurance. They find that the unemployment insurance extension did not substantially reduce the rate at which people found jobs, but did keep them as active labor force participants for longer