646 research outputs found

    Children’s episodic and generic reports of alleged abuse

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    With the present data, we explored the relations between the language of interviewer questions, children’s reports, and case and child characteristics in forensic interviews. Results clearly indicated that the type of questions posed by interviewers – either probing generic or episodic features of an event – was related to the specificity of information reported by children. Further, interviewers appeared to adjust their questioning strategies based on the frequency of the alleged abuse. Children alleging single instances of abuse were asked more episodic questions than those alleging multiple abuses. In contrast, children alleging multiple incidents of abuse were asked a greater proportion of generic questions. Given that investigators often seek forensically-relevant episodic information, it is recommended that training for investigators focus on recognition of prompt selection tendencies and developing strategies for posing non-suggestive, episodically focused questions

    Manager Personality, Manager Service Quality Orientation, and Service Climate: Test of a Model

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    [Excerpt] Receiving poor customer service is an irritating experience. Often the first recourse for the customer is to ask to speak to the manager. Undoubtedly, customers make this request with the presumption that the manager plays a pivotal role in ensuring the delivery of service quality and can make things better. Situations where the manager fails to do so can be frustrating for both customers and subordinate employees. As important as managers are to service delivery, it is paradoxically true that due to the nature of service production, they have less control over service quality than their counterparts in manufacturing (Bowen & Schneider, 1988). Accordingly, managers in service organizations must create situations where the work environment is supportive of service quality (Schneider, White, & Paul, 1998). Schneider and his colleagues (e.g., Bowen & Schneider1988; Schneider, 1990; Schneider et al., 1998; Schneider & Gunnarson, 1990) have referred to this environment as a “climate for customer service.” Indeed, a number of studies (see Dean, 2004, for a review) have suggested that businesses that successfully create a climate for customer service tend to have customers who report higher service quality (Johnson, 1996). Moreover, service climate has a positive relationship with sales through its effects on customer satisfaction (Schneider, Ehrhart, Mayer, Saltz, & Niles-Jolly, 2005). The benefit of creating desired climates is not limited to service climates. This relationship is supported by research linking climate for safety to accidents (Barling, Loughlin, & Kelloway, 2002; Zohar, 2000; Zohar & Luria, 2004) and procedural justice climate to performance and absenteeism (Colquitt, Noe, & Jackson, 2002). Less documented is how such climates are created in the first place. One stream of research investigating the development of climates has focused on specific managerial behaviors, actions, and practices. For example, Zohar and Luria (2004) found that coherent or consistent managerial behaviors were significant predictors of safety climate. In this article, we seek to go back a step in the causal chain by exploring personality as an antecedent of managers’ service quality orientations. Following J. Hogan, Hogan, and Busch (1984), we define service quality orientation as a set of “attitudes and behaviors that affects the quality of the interaction between . . . the staff of any organization and its customers” (p. 167). Our proposal is that managers with certain personality traits are more likely to facilitate the development of a climate for service. Here, we seek to expand upon the work of numerous organizational scholars and to propose that managers with particular personality traits are more likely to exhibit a positive service quality orientation. In what follows, we develop a model explicating the links between personality, managerial service quality orientation, and a climate for customer service

    X-ray crystallographic structure of a complex between a synthetic protease of human immunodeficiency virus 1 and a substrate-based hydroxyethylamine inhibitor

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    The structure of a crystal complex of the chemically synthesized protease of human immunodeficiency virus 1 with a heptapeptide-derived inhibitor bound in the active site has been determined. The sequence of the inhibitor JG-365 is Ac-Ser-Leu-Asn-Phe-ψ[CH(OH)CH_2N]-Pro-Ile-Val-OMe; the K_i is 0.24 nM. The hydroxyethylamine moiety, in place of the normal scissile bond of the substrate, is believed to mimic a tetrahedral reaction intermediate. The structure of the complex has been refined to an R factor of 0.146 at 2.4-Å resolution by using restrained least squares with rms deviations in bond lengths of 0.02 Å and bond angles of 4. The bound inhibitor diastereomer has the S configuration at the hydroxyethylamine chiral carbon, and the hydroxyl group is positioned between the active site aspartate carboxyl groups within hydrogen bonding distance. Comparison of this structure with a reduced peptide bond inhibitor-protease complex indicates that these contacts confer the exceptional binding strength of JG-365

    Gene Expression Profiles Identify Features Common to Lobular and Ductal Premalignant Breast Lesions

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    Premalignant lesions have been identified in both the ductal and lobular units of the breast epithelium. These lesions have a 4-fold increase in risk of progression to invasive breast cancer, but 80% will remain indolent. This may be due, in part, to the uncertainty of diagnoses as inter-observer reproducibility is poor. When treated with prophylactic hormone therapies blocking the estrogen receptor, up to 40% of women still develop tumors. Therefore the challenge is to develop diagnostic tests that identify the subset of high-risk lesions and provide appropriate prophylactic therapies. We undertook genome-wide expression studies to define sets of genes that show reproducible alterations in atypical hyperplastic lesions. Patients with sporadic atypical hyperplasias and no evidence of breast cancer for at least 2 years following the initial biopsy were selected. RNA quality from formalin-fixed, paraffin-embedded (FFPE) was assessed using the ratio of 150 and 500 bp amplicons of B-actin determined by RT-qPCR. A total of 23 patients were included with diagnoses of pure flattened epithelial atypia (FEA, n=2), atypical lobular lesions (n=9), and atypical ductal lesions (n=12). The atypical lesions and histologically normal breast epithelium were microdissected separately from 6 um thick tissue sections from each patient. RNA was amplified linearly, labeled and hybridized to Affymetrix ST1.0 arrays. Genes differentially expressed by \u3e2-fold between the lesion and normal epithlium within each patient were used to identify gene expression signatures of atypical hyperplasias. Hierarchical clustering of a 512 gene signature yielded 3 major groupings: Benign, Intermediate, Atypia. These results reveal that atypia of the lobular and ductal structures share common underlying transcriptional features. The gene profile provides markers that can improve the reproducibility of diagnoses of atypia. Expression profiling of individuals who subsequently progress to invasive carcinoma will provide biomarkers of high-risk premalignancies and assist selection of therapeutic choices

    The neonicotinoid insecticide Imidacloprid repels pollinating flies and beetles at field-realistic concentrations

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    Neonicotinoids are widely used systemic insecticides which, when applied to flowering crops, are translocated to the nectar and pollen where they may impact upon pollinators. Given global concerns over pollinator declines, this potential impact has recently received much attention. Field exposure of pollinators to neonicotinoids depends on the concentrations present in flowering crops and the degree to which pollinators choose to feed upon them. Here we describe a simple experiment using paired yellow pan traps with or without insecticide to assess whether the commonly used neonicotinoid imidacloprid repels or attracts flying insects. Both Diptera and Coleoptera exhibited marked avoidance of traps containing imidacloprid at a field-realistic dose of 1 Όg L-1, with Diptera avoiding concentrations as low as 0.01 Όg L-1. This is to our knowledge the first evidence for any biological activity at such low concentrations, which are below the limits of laboratory detection using most commonly available techniques. Catch of spiders in pan traps was also slightly reduced by the highest concentrations of imidacloprid used (1 Όg L-1), but catch was increased by lower concentrations. It remains to be seen if the repellent effect on insects occurs when neonicotinoids are present in real flowers, but if so then this could have implications for exposure of pollinators to neonicotinoids and for crop pollination. © 2013 Easton, Goulson

    6S RNA regulation of relA alters ppGpp levels in early stationary phase

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    6S RNA is a small, non-coding RNA that interacts directly with σ70-RNA polymerase and regulates transcription at many σ70-dependent promoters. Here, we demonstrate that 6S RNA regulates transcription of relA, which encodes a ppGpp synthase. The 6S RNA-dependent regulation of relA expression results in increased ppGpp levels during early stationary phase in cells lacking 6S RNA. These changes in ppGpp levels, although modest, are sufficient to result in altered regulation of transcription from σ70-dependent promoters sensitive to ppGpp, including those promoting expression of genes involved in amino acid biosynthesis and rRNA. These data place 6S RNA as another player in maintaining appropriate gene expression as cells transition into stationary phase. Independent of this ppGpp-mediated 6S RNA-dependent regulation, we also demonstrate that in later stationary phase, 6S RNA continues to downregulate transcription in general, and specifically at a subset of the amino acid promoters, but through a mechanism that is independent of ppGpp and which we hypothesize is through direct regulation. In addition, 6S RNA-dependent regulation of σS activity is not mediated through observed changes in ppGpp levels. We suggest a role for 6S RNA in modulating transcription of several global regulators directly, including relA, to downregulate expression of key pathways in response to changing environmental conditions

    The Democratic Biopolitics of PrEP

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    PrEP (Pre-Exposure Prophylaxis) is a relatively new drug-based HIV prevention technique and an important means to lower the HIV risk of gay men who are especially vulnerable to HIV. From the perspective of biopolitics, PrEP inscribes itself in a larger trend of medicalization and the rise of pharmapower. This article reconstructs and evaluates contemporary literature on biopolitical theory as it applies to PrEP, by bringing it in a dialogue with a mapping of the political debate on PrEP. As PrEP changes sexual norms and subjectification, for example condom use and its meaning for gay subjectivity, it is highly contested. The article shows that the debate on PrEP can be best described with the concepts ‘sexual-somatic ethics’ and ‘democratic biopolitics’, which I develop based on the biopolitical approach of Nikolas Rose and Paul Rabinow. In contrast, interpretations of PrEP which are following governmentality studies or Italian Theory amount to either farfetched or trivial positions on PrEP, when seen in light of the political debate. Furthermore, the article is a contribution to the scholarship on gay subjectivity, highlighting how homophobia and homonormativity haunts gay sex even in liberal environments, and how PrEP can serve as an entry point for the destigmatization of gay sexuality and transformation of gay subjectivity. ‘Biopolitical democratization’ entails making explicit how medical technology and health care relates to sexual subjectification and ethics, to strengthen the voice of (potential) PrEP users in health politics, and to renegotiate the profit and power of Big Pharma

    The Milky Way Tomography With SDSS. III. Stellar Kinematics

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    We study Milky Way kinematics using a sample of 18.8 million main-sequence stars with r 20 degrees). We find that in the region defined by 1 kpc < Z < 5 kpc and 3 kpc < R < 13 kpc, the rotational velocity for disk stars smoothly decreases, and all three components of the velocity dispersion increase, with distance from the Galactic plane. In contrast, the velocity ellipsoid for halo stars is aligned with a spherical coordinate system and appears to be spatially invariant within the probed volume. The velocity distribution of nearby (Z < 1 kpc) K/M stars is complex, and cannot be described by a standard Schwarzschild ellipsoid. For stars in a distance-limited subsample of stars (< 100 pc), we detect a multi-modal velocity distribution consistent with that seen by HIPPARCOS. This strong non-Gaussianity significantly affects the measurements of the velocity-ellipsoid tilt and vertex deviation when using the Schwarzschild approximation. We develop and test a simple descriptive model for the overall kinematic behavior that captures these features over most of the probed volume, and can be used to search for substructure in kinematic and metallicity space. We use this model to predict further improvements in kinematic mapping of the Galaxy expected from Gaia and the Large Synoptic Survey Telescope.NSF AST-615991, AST-0707901, AST-0551161, AST-02-38683, AST-06-07634, AST-0807444, PHY05-51164NASA NAG5-13057, NAG5-13147, NNXO-8AH83GPhysics Frontier Center/Joint Institute for Nuclear Astrophysics (JINA) PHY 08-22648U.S. National Science FoundationMarie Curie Research Training Network ELSA (European Leadership in Space Astrometry) MRTN-CT-2006-033481Fermi Research Alliance, LLC, United States Department of Energy DE-AC02-07CH11359Alfred P. Sloan FoundationParticipating InstitutionsJapanese MonbukagakushoMax Planck SocietyHigher Education Funding Council for EnglandMcDonald Observator

    The Milky Way Tomography with SDSS: III. Stellar Kinematics

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    We study Milky Way kinematics using a sample of 18.8 million main-sequence stars with r<20 and proper-motion measurements derived from SDSS and POSS astrometry, including ~170,000 stars with radial-velocity measurements from the SDSS spectroscopic survey. Distances to stars are determined using a photometric parallax relation, covering a distance range from ~100 pc to 10 kpc over a quarter of the sky at high Galactic latitudes (|b|>20 degrees). We find that in the region defined by 1 kpc <Z< 5 kpc and 3 kpc <R< 13 kpc, the rotational velocity for disk stars smoothly decreases, and all three components of the velocity dispersion increase, with distance from the Galactic plane. In contrast, the velocity ellipsoid for halo stars is aligned with a spherical coordinate system and appears to be spatially invariant within the probed volume. The velocity distribution of nearby (Z<1Z<1 kpc) K/M stars is complex, and cannot be described by a standard Schwarzschild ellipsoid. For stars in a distance-limited subsample of stars (<100 pc), we detect a multimodal velocity distribution consistent with that seen by HIPPARCOS. This strong non-Gaussianity significantly affects the measurements of the velocity ellipsoid tilt and vertex deviation when using the Schwarzschild approximation. We develop and test a simple descriptive model for the overall kinematic behavior that captures these features over most of the probed volume, and can be used to search for substructure in kinematic and metallicity space. We use this model to predict further improvements in kinematic mapping of the Galaxy expected from Gaia and LSST.Comment: 90 pages, 26 figures, submitted to Ap
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