How Are HOPE VI Families Faring? Health

While the primary goal of the HOPE VI program is to improve the living environment of public housing residents, it also aims to help residents move toward self-sufficiency by helping them find new or better jobs (see page 6). The program's Community Support Services (CSS) component can help identify what residents need, such as job training or placement, to make them more likely to find employment. Relocation itself might help residents find employment if they move to less poor neighborhoods with more job opportunities and better job information networks. Residents who move back to new mixed-income developments on the HOPE VI sites could experience similar improved job networks. However, whether these expectations of increased employment and self-sufficiency are realistic for HOPE VI residents is unclear. For both employed and nonemployed residents, the gap between household income and the income needed for housing and other costs of living is wide. The HOPE VI Panel Study is tracking the well-being of residents from five HOPE VI sites (see page 7). These respondents, mostly African American women, were extremely poor at baseline.[1] The vast majority reported household incomes below the poverty level, and over a third (35 percent) reported annual incomes of less than $5,000. Less than half (45 percent) of respondents were employed, and those who were working earned low wages (Popkin et al. 2002). This brief discusses income and employment findings for working-age adults under 62 years old two years after relocation started at the five HOPE VI Panel Study sites.[2] It examines various barriers to employment for respondents, and considers both expectations for future employment and the services and support systems that might best mitigate those barriers. Future research will examine how residents' employment experiences are affected as relocation is completed and some residents return to the revitalized developments. Brief #4 from the series "Metropolitan Housing and Communities: A Roof Over Their Heads".Notes from this section1. Because many health problems vary significantly by gender and race, and because over 90 percent of the adults in the HOPE VI Panel Study are women and 89 percent are African American, a sample of black women nationally is used as the comparison group. The national data cited in this brief are published by the U.S. Department of Health and Human Services, calculated from the National Health Interview Survey in 2001.National Health Interview Survey data are broken down by sex and race, but not further by poverty status. Nationally, approximately one-third of all black women live in households with incomes below the poverty level. Therefore, the comparison data are biased slightly upward in terms of better health because of the relatively better economic well-being of the national population of black women compared to the HOPE VI sample. Even limiting the comparisons to similar gender, race, and age groups, adults in the HOPE VI study experience health problems more often than other demographically similar groups

How Does Family Well-Being Vary Across Different Types of Neighborhoods?

Based on national survey data, examines the impact of neighborhood environments on the well-being of families and children, as indicated by family work effort, economic security, access to services including health care and child care, and child behavior

How Are HOPE VI Families Faring? Income and Employment

While the primary goal of the HOPE VI program is to improve the living environment of public housing residents, it also aims to help residents move toward self-sufficiency by helping them find new or better jobs (see page 6). The program's Community Support Services (CSS) component can help identify what residents need, such as job training or placement, to make them more likely to find employment. Relocation itself might help residents find employment if they move to less poor neighborhoods with more job opportunities and better job information networks. Residents who move back to new mixed-income developments on the HOPE VI sites could experience similar improved job networks. However, whether these expectations of increased employment and self-sufficiency are realistic for HOPE VI residents is unclear. For both employed and nonemployed residents, the gap between household income and the income needed for housing and other costs of living is wide. The HOPE VI Panel Study is tracking the well-being of residents from five HOPE VI sites (see page 7). These respondents, mostly African American women, were extremely poor at baseline.[1] The vast majority reported household incomes below the poverty level, and over a third (35 percent) reported annual incomes of less than $5,000. Less than half (45 percent) of respondents were employed, and those who were working earned low wages (Popkin et al. 2002). This brief discusses income and employment findings for working-age adults under 62 years old two years after relocation started at the five HOPE VI Panel Study sites.[2] It examines various barriers to employment for respondents, and considers both expectations for future employment and the services and support systems that might best mitigate those barriers. Future research will examine how residents' employment experiences are affected as relocation is completed and some residents return to the revitalized developments. Notes from this section 1. Among respondents under 62 years old, 82 percent were non-Hispanic African American women and 9 percent were Hispanic women. 2. A future brief in the "A Roof Over Their Heads" series will examine income and employment findings for adults over 62 years old

Leishmaniasis: new approaches to disease control.

The leishmaniases afflict the world's poorest populations. Among the two million new cases each year in the 88 countries where the disease is endemic (fig 1), it is estimated that 80% earn less than $2 a day. Human infections with Leishmania protozoan parasites, transmitted via the bite of a sandfly, cause visceral, cutaneous, or mucocutaneous leishmaniasis. The global burden of leishmaniasis has remained stable for some years, causing 2.4 million disability adjusted life years (DALYs) lost and 59 000 deaths in 2001. Neglected by researchers and funding agencies, leishmaniasis control strategies have varied little for decades, but in recent years there have been exciting advances in diagnosis, treatment, and prevention. These include an immunochromatographic dipstick for diagnosing visceral leishmaniasis; the licensing of miltefosine, the first oral drug for visceral leishmaniasis; and evidence that the incidence of zoonotic visceral leishmaniasis in children can be reduced by providing dogs with deltamethrin collars. There is also hope that the first leishmaniasis vaccine will become available within a decade. Here we review these developments and identify priorities for research

Climatic and eustatic controls on the development of a Late Triassic source rock in the Jameson Land Basin, East Greenland

This work was undertaken as part of the continuing work of CASP in East Greenland. The sponsoring companies are thanked for their continued support of this work. Help in the field by T. Kinnaird and useful discussions with A. Whitham are gratefully acknowledged. The reviews of L. Clemmensen and an anonymous reviewer, and the input from S. Jones led to improvements to the original paper.Peer reviewedPostprin

The Small-Is-Very-Small Principle

The central result of this paper is the small-is-very-small principle for restricted sequential theories. The principle says roughly that whenever the given theory shows that a property has a small witness, i.e. a witness in every definable cut, then it shows that the property has a very small witness: i.e. a witness below a given standard number. We draw various consequences from the central result. For example (in rough formulations): (i) Every restricted, recursively enumerable sequential theory has a finitely axiomatized extension that is conservative w.r.t. formulas of complexity $\leq n$. (ii) Every sequential model has, for any $n$, an extension that is elementary for formulas of complexity $\leq n$, in which the intersection of all definable cuts is the natural numbers. (iii) We have reflection for $\Sigma^0_2$-sentences with sufficiently small witness in any consistent restricted theory $U$. (iv) Suppose $U$ is recursively enumerable and sequential. Suppose further that every recursively enumerable and sequential $V$ that locally inteprets $U$, globally interprets $U$. Then, $U$ is mutually globally interpretable with a finitely axiomatized sequential theory. The paper contains some careful groundwork developing partial satisfaction predicates in sequential theories for the complexity measure depth of quantifier alternations

Fast prediction and evaluation of gravitational waveforms using surrogate models

[Abridged] We propose a solution to the problem of quickly and accurately predicting gravitational waveforms within any given physical model. The method is relevant for both real-time applications and in more traditional scenarios where the generation of waveforms using standard methods can be prohibitively expensive. Our approach is based on three offline steps resulting in an accurate reduced-order model that can be used as a surrogate for the true/fiducial waveform family. First, a set of m parameter values is determined using a greedy algorithm from which a reduced basis representation is constructed. Second, these m parameters induce the selection of m time values for interpolating a waveform time series using an empirical interpolant. Third, a fit in the parameter dimension is performed for the waveform's value at each of these m times. The cost of predicting L waveform time samples for a generic parameter choice is of order m L + m c_f online operations where c_f denotes the fitting function operation count and, typically, m << L. We generate accurate surrogate models for Effective One Body (EOB) waveforms of non-spinning binary black hole coalescences with durations as long as 10^5 M, mass ratios from 1 to 10, and for multiple harmonic modes. We find that these surrogates are three orders of magnitude faster to evaluate as compared to the cost of generating EOB waveforms in standard ways. Surrogate model building for other waveform models follow the same steps and have the same low online scaling cost. For expensive numerical simulations of binary black hole coalescences we thus anticipate large speedups in generating new waveforms with a surrogate. As waveform generation is one of the dominant costs in parameter estimation algorithms and parameter space exploration, surrogate models offer a new and practical way to dramatically accelerate such studies without impacting accuracy.Comment: 20 pages, 17 figures, uses revtex 4.1. Version 2 includes new numerical experiments for longer waveform durations, larger regions of parameter space and multi-mode model

The quantum correlation between the selection of the problem and that of the solution sheds light on the mechanism of the quantum speed up

In classical problem solving, there is of course correlation between the selection of the problem on the part of Bob (the problem setter) and that of the solution on the part of Alice (the problem solver). In quantum problem solving, this correlation becomes quantum. This means that Alice contributes to selecting 50% of the information that specifies the problem. As the solution is a function of the problem, this gives to Alice advanced knowledge of 50% of the information that specifies the solution. Both the quadratic and exponential speed ups are explained by the fact that quantum algorithms start from this advanced knowledge.Comment: Earlier version submitted to QIP 2011. Further clarified section 1, "Outline of the argument", submitted to Phys Rev A, 16 page

The Universal Cloud and Aerosol Sounding System (UCASS): a low-cost miniature optical particle counter for use in dropsonde or balloon-borne sounding systems

© Author(s) 2019. This work is distributed under the Creative Commons Attribution 4.0 License. An earlier version of this work was published in Atmospheric Measurement Techniques Discussions: https://dx.doi.org/10.5194/amt-2019-70.A low-cost miniaturized particle counter has been developed by The University of Hertfordshire (UH) for the measurement of aerosol and droplet concentrations and size distributions. The Universal Cloud and Aerosol Sounding System (UCASS) is an optical particle counter (OPC), which uses wide-angle elastic light scattering for the high-precision sizing of fluid-borne particulates. The UCASS has up to 16 configurable size bins, capable of sizing particles in the range 0.4–40 µm in diameter. Unlike traditional particle counters, the UCASS is an open-geometry system that relies on an external air flow. Therefore, the instrument is suited for use as part of a dropsonde, balloon-borne sounding system, as part of an unmanned aerial vehicle (UAV), or on any measurement platform with a known air flow. Data can be logged autonomously using an on-board SD card, or the device can be interfaced with commercially available meteorological sondes to transmit data in real time. The device has been deployed on various research platforms to take measurements of both droplets and dry aerosol particles. Comparative results with co-located instrumentation in both laboratory and field settings show good agreement for the sizing and counting ability of the UCASS.Peer reviewe