333 research outputs found

    Estimating the Benefits of a Faith-Based Correctional Program

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    A recent outcome evaluation of the InnerChange Freedom Initiative (InnerChange), a faith-based prisoner reentry program that has operated within Minnesota's prison system since 2002, showed the program is effective in lowering recidivism. This study extends research on InnerChange by conducting a cost-benefit analysis of the program. Because InnerChange relies heavily on volunteers and program costs are privately funded, the program exacts no additional costs to the State of Minnesota. As a result, this study focused on estimating the program's benefits by examining recidivism and post-release employment. The findings showed that during its first six years of operation in Minnesota, InnerChange produced an estimated benefit of 3million,whichamountstonearly3 million, which amounts to nearly 8,300 per participant. Much of this benefit stems from costs avoided as a result of the program's impact on reoffending

    Bestrahlungserprobung von THTR-Brennelementen im DRAGON-Reaktor(Bestrahlungsexperiment DR-K3)

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    Within the scope of the program "Development of Spherical Fuel Elements for HTR", 25 similar fuel elements (f.e.) have been irradiated in the DRAGON reactor. The f.e. were fabricated by NUKEM and were to be tested under HTR conditions to scrutinize their employability in the THTR. The fuel was in the form of coated particles moulded into A3 matrix. The kernels of the particles were made of mixed oxide of uranium and thorium with an U 235 enrichment of 90 %. Each f.e. contained 2.2 g U 235. [...

    Lagerverhalten abgebrannter HTR Brennelemente in Transport- und Lagerbehältern aus Sphäroguß

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    In den Heißen Zellen der KFA wird in Zusammenarbeit mit"der DWK ein Demonstrationstest mit angeschlossenem Meßprogramm an zwei mit AVR-Brennelementenbeladenen Sphäroguß-Behältern durchgeführt. An den Arbeiten in der KFA sind beteiligt das Institut für Reaktorwerkstoffe (IRW), Anlagenplanung und Bautechnik (AP), Technische Dienste - Dekontamination (TD-DE) sowie das Projekt Hochtemperatur-Brennstoffkreislauf (HBK)

    Fluctuation induced interactions between domains in membranes

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    We study a model lipid bilayer composed of a mixture of two incompatible lipid types which have a natural tendency to segregate in the absence of membrane fluctuations. The membrane is mechanically characterized by a local bending rigidity κ(ϕ)\kappa(\phi) which varies with the average local lipid composition ϕ\phi. We show, in the case where κ\kappa varies weakly with ϕ\phi, that the effective interaction between lipids of the same type can either be everywhere attractive or can have a repulsive component at intermediate distances greater than the typical lipid size. When this interaction has a repulsive component, it can prevent macro-phase separation and lead to separation in mesophases with a finite domain size. This effect could be relevant to certain experimental and numerical observations of mesoscopic domains in such systems.Comment: 9 pages RevTex, 1 eps figur

    Numerical optimization of amplitude-modulated pulses in microwave-driven entanglement generation

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    Microwave control of trapped ions can provide an implementation of high-fidelity two-qubit gates free from errors induced by photon scattering. Furthermore, microwave conductors may be embedded into a scalable trap structure, providing the chip-level integration of control that is desirable for scaling. Recent developments have demonstrated how amplitude modulation of the gate drive can permit a two-qubit entangling operation to become robust against motional mode noise and other experimental imperfections. Here, we discuss a method for the numerical optimization of the microwave pulse envelope to produce gate pulses with improved resilience, faster operation and higher energy efficiency

    The bridge between social identity and community capital on the path to recovery and desistance

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    It has long been recognised that changes in social networks (and the underpinning changes in personal and social identity) are strong predictors of both desistance from crime and recovery from substance use. Building on existing work attempting to measure and shift social networks and transitions to prosocial groups, the current study provides pilot data from prisoners and family members about a visualisation technique widely used in specialist addiction treatment (node-link mapping) to map opportunities for linkage to prosocial groups and networks. The data presented in the paper are from a small-scale feasibility pilot. This suggests both bonding and bridging capital in prisoner populations due for release and the diversity of community capital opportunities that exists in this population. The implications of this work are significant for substance users and offenders pending return to the community, and has implications around resettlement and reintegration support for probation staff in prisons and in the community. The paper emphasises the importance of mapping connectedness as a key component of planning for reintegration back into the community for those working with offenders who are aspiring to achieve desistance and recovery

    FMNL2 drives actin-based protrusion and migration downstream of Cdc42.

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    Cell migration entails protrusion of lamellipodia, densely packed networks of actin filaments at the cell front. Filaments are generated by nucleation, likely mediated by Arp2/3 complex and its activator Scar/WAVE. It is unclear whether formins contribute to lamellipodial actin filament nucleation or serve as elongators of filaments nucleated by Arp2/3 complex. Here we show that the Diaphanous-related formin FMNL2, also known as FRL3 or FHOD2, accumulates at lamellipodia and filopodia tips. FMNL2 is cotranslationally modified by myristoylation and regulated by interaction with the Rho-guanosine triphosphatase Cdc42. Abolition of myristoylation or Cdc42 binding interferes with proper FMNL2 activation, constituting an essential prerequisite for subcellular targeting. In vitro, C-terminal FMNL2 drives elongation rather than nucleation of actin filaments in the presence of profilin. In addition, filament ends generated by Arp2/3-mediated branching are captured and efficiently elongated by the formin. Consistent with these biochemical properties, RNAi-mediated silencing of FMNL2 expression decreases the rate of lamellipodia protrusion and, accordingly, the efficiency of cell migration. Our data establish that the FMNL subfamily member FMNL2 is a novel elongation factor of actin filaments that constitutes the first Cdc42 effector promoting cell migration and actin polymerization at the tips of lamellipodia

    Programmed Bending Reveals Dynamic Mechanochemical Coupling in Supported Lipid Bilayers

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    In living cells, mechanochemical coupling represents a dynamic means by which membrane components are spatially organized. An extra-ordinary example of such coupling involves curvature-dependent polar localization of chemically-distinct lipid domains at bacterial poles, which also undergo dramatic reequilibration upon subtle changes in their interfacial environment such as during sporulation. Here, we demonstrate that such interfacially-triggered mechanochemical coupling can be recapitulated in vitro by simultaneous, real-time introduction of mechanically-generated periodic curvatures and attendant strain-induced lateral forces in lipid bilayers supported on elastomeric substrates. In particular, we show that real-time wrinkling of the elastomeric substrate prompts a dynamic domain reorganization within the adhering bilayer, producing large, oriented liquid-ordered domains in regions of low curvature. Our results suggest a mechanism in which interfacial forces generated during surface wrinkling and the topographical deformation of the bilayer combine to facilitate dynamic reequilibration prompting the observed domain reorganization. We anticipate this curvature-generating model system will prove to be a simple and versatile tool for a broad range of studies of curvature-dependent dynamic reorganizations in membranes that are constrained by the interfacial elastic and dynamic frameworks such as the cell wall, glycocalyx, and cytoskeleton
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