46,314 research outputs found

    Descriptive Analysis of Domestic Violence and Sexual Assault Incidents Closed by the Alaska State Troopers: 2008–2011 — Final Report

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    This report presents a descriptive analysis of sexual assault and domestic violence incidents closed by the Alaska State Troopers for the period January 1, 2008 through December 31, 2011, as part of an effort to systematically document the formal processing of sexual assault (SA), sexual abuse of a minor (SAM), and domestic violence incidents reported to law enforcement agencies in Alaska.Report prepared under Grant #2013-BJ-CX-K031 from the Bureau of Justice Statistics, U.S. Department of Justice.Acknowledgements / Key Findings / Introduction / PART I: Sexual Assault and Sexual Abuse of a Minor Case Records / Case Record Characteristics / Suspect Characteristics / Victim Characteristics / Suspect and Victim Alcohol/Drug Use / Characteristics of Sexual Assault/Sexual Abuse of a Minor Incidents / Legal Resolutions of Sexual Assault/Sexual Abuse of a Minor Cases / PART II: Domestic Violence Case Records / Defining Domestic Violence / Sample Assessment: Domestic Violence Cases / Case Record Characteristics / Suspect Characteristics / Victim Characteristics / Suspect and Victim Alcohol/Drug Use / Characteristics of Domestic Violence Incidents / Legal Resolutions of Domestic Violence Case

    Statistical characterization of phenolic-novolak structures

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    Three statistical methods of general validity are valuable for characterizing any polymer which results from chain polymerization of multifunctional branching monomers linked through bifunctional monomers

    Deep Cover HCI

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    The growing popularity of methodologies that turn "to the wild" for real world data creates new ethical issues for the HCI community. For investigations questioning interactions in public or transient spaces, crowd interaction, or natural behaviour, uncontrolled and uninfluenced (by the experimenter) experiences represent the ideal evaluation environment. We argue that covert research can be completed rigorously and ethically to expand our knowledge of ubiquitous technologies. Our approach, which we call Deep Cover HCI, utilises technology-supported observation in public spaces to stage completely undisturbed experiences for evaluation. We complete studies without informed consent and without intervention from an experimenter in order to gain new insights into how people use technology in public settings. We argue there is clear value in this approach, reflect on the ethical issues of such investigations, and describe our ethical guidelines for completing Deep Cover HCI Research

    Spatial curvature effects on molecular transport by diffusion

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    For a substance diffusing on a curved surface, we obtain an explicit relation valid for very small values of the time, between the local concentration, the diffusion coefficient, the intrinsic spatial curvature and the time. We recover the known solution of Fick's law of diffusion in the flat space limit. In the biological context, this result would be useful in understanding the variations in the diffusion rates of integral proteins and other molecules on membranes.Comment: 10 page

    Effect of interfacial oxide layers on the current-voltage characteristics of Al-Si contacts

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    Aluminum-silicon contacts with very thin interfacial oxide layers and various surface impurity concentrations are studied for both n and p-type silicon. To determine the surface impurity concentrations on p(+)-p and n(+)-n structures, a modified C-V technique was utilized. Effects of interfacial oxide layers and surface impurity concentrations on current-voltage characteristics are discussed based on the energy band diagrams from the conductance-voltage plots. The interfacial oxide and aluminum layer causes image contrasts on X-ray topographs

    Separation of core and crustal magnetic field sources

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    Fluid motions in the electrically conducting core and magnetized crustal rocks are the two major sources of the magnetic field observed on or slightly above the Earth's surface. The exact separation of these two contributions is not possible without imposing a priori assumptions about the internal source distribution. Nonetheless models like these were developed for hundreds of years Gauss' method, least squares analysis with a truncated spherical harmonic expansion was the method of choice for more than 100 years although he did not address separation of core and crustal sources, but rather internal versus external ones. Using some arbitrary criterion for appropriate truncation level, we now extrapolate downward core field models through the (approximately) insulating mantle. Unfortunately our view can change dramatically depending on the degree of truncation for describing core sources

    Relation Between Einstein And Quantum Field Equations

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    We show that there exists a choice of scalar field modes, such that the evolution of the quantum field in the zero-mass and large-mass limits is consistent with the Einstein equations for the background geometry. This choice of modes is also consistent with zero production of these particles and thus corresponds to a preferred vacuum state preserved by the evolution. In the zero-mass limit, we find that the quantum field equation implies the Einstein equation for the scale factor of a radiation-dominated universe; in the large-mass case, it implies the corresponding Einstein equation for a matter-dominated universe. Conversely, if the classical radiation-dominated or matter-dominated Einstein equations hold, there is no production of scalar particles in the zero and large mass limits, respectively. The suppression of particle production in the large mass limit is over and above the expected suppression at large mass. Our results hold for a certain class of conformally ultrastatic background geometries and therefore generalize previous results by one of us for spatially flat Robertson-Walker background geometries. In these geometries, we find that the temporal part of the graviton equations reduces to the temporal equation for a massless minimally coupled scalar field, and therefore the results for massless particle production hold also for gravitons. Within the class of modes we study, we also find that the requirement of zero production of massless scalar particles is not consistent with a non-zero cosmological constant. Possible implications are discussed.Comment: Latex, 24 pages. Minor changes in text from original versio

    Direct versus Delayed pathways in Strong-Field Non-Sequential Double Ionization

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    We report full-dimensionality quantum and classical calculations for double ionization of laser-driven helium at 390 nm. Good qualitative agreement is observed. We show that the classical double ionization trajectories can be divided into two distinct pathways: direct and delayed. The direct pathway, with an almost simultaneous ejection of both electrons, emerges from small laser intensities. With increasing intensity its relative importance, compared to the delayed ionization pathway, increases until it becomes the predominant pathway for total electron escape energy below around 5.25 UpU_{p}. However the delayed pathway is the predominant one for double ionization above a certain cut-off energy at all laser intensities

    Particle creation in a Robertson-Walker Universe revisited

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    We reanalyze the problem of particle creation in a 3+1 spatially closed Robertson-Walker space-time. We compute the total number of particles produced by this non-stationary gravitational background as well as the corresponding total energy and find a slight discrepancy between our results and those recently obtained in the literatur
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