Evidence, Arrest Circumstances, and Felony Cocaine Case Processing

Case evidence and situational arrest characteristics are widely speculated to influence courtroom actor decisions, yet such measures are infrequently included in research. Using new data on felony cocaine cases from an urban county in a Southern non-guideline state, this study examines how physical evidence and arrest circumstances affect three stages of case processing: initial charge type, charge reduction, and sentence length. The influence of evidence appeared strongest at the early stage when prosecutors chose the appropriate charge, though certain evidentiary and arrest measures continued to influence later decisions. Charge reductions were driven mostly by legal factors, and while guilt should be established prior to sentencing, we still observed some key associations between evidence and arrest circumstances and sentence length. Results suggest that the effect of evidence and arrest circumstances depends greatly upon the type of evidence and stage being studied. Study findings are discussed in the context of extant theory and suggested future research on criminal case processing

A Tale of Two Crimes: An Analysis of Criminal Sentencing of White-Collar and Street Offenders

Though a long-standing history of scholarship has sought to understand the potential for disparities in criminal punishment based on ascribed status characteristics, contemporary research has largely ignored the ways in which punishment outcomes varies across offenders convicted of offenses traditionally viewed as either white-collar or street crimes. Using data from United States federal district courts from fiscal years 2008-2010, this research expands upon current knowledge by comparing embezzlement and larceny offenders in federal criminal courts across a variety of punishment processes and outcomes. The findings suggest a substantial degree of variation in punishment severity between embezzlement and larceny offenders across modes of punishment. Generally, the question of whether white-collar offenders are treated severely, leniently, or about the same as compared to non-violent property offenders is largely dependent upon the outcome of interest and the specific types of offenses included in the analysis

Incarceration and Nutritional Hardship: Considering the Link to Food Insecurity and Healthful Food Access

This dissertation extends research examining the health and well-being consequences of incarceration by investigating two understudied forms of nutritional hardship: food insecurity and access to healthy food retailers. Specifically, this dissertation expands upon extant literature by addressing the following research questions: (1) What is the relationship between prior incarceration and food insecurity? (2) What is the relationship between prior incarceration and access to healthy food retailers? (3) Does access to healthy food retailers and factors that are considered consequences of incarceration mediate the association between prior incarceration and food insecurity? (4) Does access to healthy food retailers and food security status mediate the relationship between incarceration and (a) health and (b) nutritional behavior? To address these questions, this project draws from two data sources. First, using the National Longitudinal Study of Adolescent to Adult Health, I assess the link between incarceration and food insecurity, as well as health and nutritional outcomes. Second, the Center for Disease Control (CDC) Division of Nutrition, Physical Activity and Obesity collected data for the Modified Retail Food Environment Index (mRFEI) in 2008-2009, which is linked to Add Health data using census tract codes. The mRFEI represents the percentage of retailers that sell healthy food relative to unhealthy food retailers in a census tract and the 0.5-mile buffer around the census tract. These data are used to assess the relationship between incarceration and access to healthy food retailers. Findings suggest that when compared to respondents who did not have prior contact with the criminal justice system, formerly incarcerated individuals are more likely to be food insecure and live in census tracts with low access to healthy food retailers. The findings indicate that much of the relationship between incarceration and food insecurity is explained by financial difficulties, stress, and decreased social standing. However, when the reference category is changed to "arrested only" or "convicted only" respondents the association between incarceration and nutrition hardship outcomes are attenuated, suggesting that selection bias underlies the association. Finally, neither food insecurity or access to healthy food retailers mediate nutritional outcomes or the likelihood of having an unhealthy weight, although food insecurity was found to mediate the association between incarceration and subjective health status. Overall, the results call for further investigation of the complex relationship between incarceration, post-release nutritional hardships, and health

Temperature Size Rule is mediated by thermal plasticity of critical size in Drosophila melanogaster

Most ectotherms show an inverse relationship between developmental temperature and body size, a phenomenon known as the temperature size rule (TSR). Several competing hypotheses have been proposed to explain its occurrence. According to one set of views, the TSR results from inevitable biophysical effects of temperature on the rates of growth and differentiation, whereas other views suggest the TSR is an adaptation that can be achieved by a diversity of mechanisms in different taxa. Our data reveal that the fruit fly, Drosophila melanogaster, obeys the TSR using a novel mechanism: reduction of critical size at higher temperatures. In holometabolous insects, attainment of critical size initiates the hormonal cascade that terminates growth, and hence, Drosophila larvae appear to instigate the signal to stop growth at a smaller size at higher temperatures. This is in contrast to findings from another holometabolous insect, Manduca sexta, in which the TSR results from the effect of temperature on the rate and duration of growth. This contrast suggests that there is no single mechanism that accounts for the TSR. Instead, the TSR appears to be an adaptation that is achieved at a proximate level through different mechanisms in different taxa.Comment: Accepted in Proceedings of Royal Society B: Biological Science

Mass segregation of different populations inside the cluster NGC6101

We have used ESO telescopes at La Silla and the Hubble Space Telescope (HST) in order to obtain accurate B,V,I CCD photometry for the stars located within 200" (~= 2 half-mass radii, r_h = 1.71') from the center of the cluster NGC 6101. Color-Magnitude Diagrams extending from the red-giant tip to about 5 magnitudes below the main-sequence turnoff MSTO (V = 20.05 +- 0.05) have been constructed. The following results have been obtained from the analysis of the CMDs: a) The overall morphology of the main branches confirms previous results from the literature, in particular the existence of a sizeable population of 73 "blue stragglers", which had been already partly detected (27).They are considerably more concentrated than either the subgiant branch or the main sequence stars, and have the same spatial distribution as the horizontal branch stars (84% prob. from K-S test). An hypothesis on the possible BSS progeny is also presented. b) The HB is narrow and the bulk of stars is blue, as expected for a typical metal-poor globular cluster. c) The derived magnitudes for the HB and the MSTO, $V(ZAHB) = 16.59+-0.10, V(TO) = 20.05+-0.05, coupled with the values E(B-V) = 0.1, [Fe/H] = -1.80, Y = 0.23 yield a distance modulus (m-M)_V = 16.23 and an age similar to other ``old'' metal-poor globular clusters. In particular, from the comparison with theoretical isochrones, we derive for this cluster an age of 13 Gyrs. d) By using the large statistical sample of Red Giant Branch (RGB) stars, we detected with high accuracy the position of the bump in the RGB luminosity function. This observational feature has been compared with theoretical prescriptions, yielding a good agreement within the current theoretical and observational uncertainties.Comment: 13 pages, 17 figures, uses documentclass 'aa' v 5.01 with package 'graphicx'. Accepted for publication in Astronomy & Astrophysic

Sparkling extreme-ultraviolet bright dots observed with Hi-C

Observing the Sun at high time and spatial scales is a step toward understanding the finest and fundamental scales of heating events in the solar corona. The high-resolution coronal (Hi-C) instrument has provided the highest spatial and temporal resolution images of the solar corona in the EUV wavelength range to date. Hi-C observed an active region on 2012 July 11 that exhibits several interesting features in the EUV line at 193 Å. One of them is the existence of short, small brightenings "sparkling" at the edge of the active region; we call these EUV bright dots (EBDs). Individual EBDs have a characteristic duration of 25 s with a characteristic length of 680 km. These brightenings are not fully resolved by the SDO/AIA instrument at the same wavelength; however, they can be identified with respect to the Hi-C location of the EBDs. In addition, EBDs are seen in other chromospheric/coronal channels of SDO/AIA, which suggests a temperature between 0.5 and 1.5 MK. Based on their frequency in the Hi-C time series, we define four different categories of EBDs: single peak, double peak, long duration, and bursty. Based on a potential field extrapolation from an SDO/HMI magnetogram, the EBDs appear at the footpoints of large-scale, trans-equatorial coronal loops. The Hi-C observations provide the first evidence of small-scale EUV heating events at the base of these coronal loops, which have a free magnetic energy of the order of 1026 erg. © 2014. The American Astronomical Society. All rights reserved

The Association Between Adverse Childhood Experiences (ACEs), Bullying Victimization, and Internalizing and Externalizing Problems Among Early Adolescents: Examining Cumulative and Interactive Associations

Both adverse childhood experiences (ACEs) and bullying victimization are linked with mental health problems in adolescents. However, little is known about the overlap between the two factors and how this impacts adolescent mental health problems (i.e., internalizing and externalizing problems). The current study analyzed data from 8,085 participants (47.7% female; 44.1% racial/ethnic minority) in the Adolescent Brain Cognitive Development (ABCD) study, baseline (2016–2018, ages 9–10 years) to Year 2. Regression analyses were used to estimate associations between ACEs, bullying victimization and mental health problems, respectively, adjusting for sex, race/ethnicity, country of birth, household income, parental education, and study site. The findings showed that both ACEs and bullying victimization were independently associated with higher internalizing and higher externalizing problems. However, no significant interaction was found between ACEs and bullying victimization. Overall, the results align with the cumulative risk model of adversity, linking cumulative ACEs and bullying victimization to internalizing and externalizing problems in early adolescents

Coronal radiation of a cusp of spun-up stars and the X-ray luminosity of Sgr A*

Chandra has detected optically thin, thermal X-ray emission with a size of ~1 arcsec and luminosity ~10^33 erg/s from the direction of the Galactic supermassive black hole (SMBH), Sgr A*. We suggest that a significant or even dominant fraction of this signal may be produced by several thousand late-type main-sequence stars that possibly hide in the central ~0.1 pc region of the Galaxy. As a result of tidal spin-ups caused by close encounters with other stars and stellar remnants, these stars should be rapidly rotating and hence have hot coronae, emitting copious amounts of X-ray emission with temperatures kT<~ a few keV. The Chandra data thus place an interesting upper limit on the space density of (currently unobservable) low-mass main-sequence stars near Sgr A*. This bound is close to and consistent with current constraints on the central stellar cusp provided by infrared observations. If coronally active stars do provide a significant fraction of the X-ray luminosity of Sgr A*, it should be variable on hourly and daily time scales due to giant flares occurring on different stars. Another consequence is that the quiescent X-ray luminosity and accretion rate of the SMBH are yet lower than believed before.Comment: 18 pages, 7 figures. Accepted to MNRA