Using laser Doppler vibrometry to measure capillary surface waves on fluid-fluid interfaces     

James Friend  Leslie Yeo 《Biomicrofluidics》2010,4(2)

Capillary wave phenomena are challenging to study, especially for microfluidics where the wavelengths are short, the frequencies are high, and the frequency distribution is rarely confined to a narrow range, let alone a single frequency. Those that have been studying Faraday capillary waves generated by vertical oscillation have chosen to work at larger scales and at low frequencies as a solution to this problem, trading simplicity in measurement for issues with gravity, boundary conditions, and the fidelity of the subharmonic capillary wave motion. Laser Doppler vibrometry using a Mach–Zehnder interferometer is an attractive alternative: The interface’s motion can be characterized at frequencies up to 40 MHz and displacements of as little as a few tens of picometers.  相似文献   

The Performance Technologist's Library PIQ's Book Review Column     

Leslie Moller 《Performance Improvement Quarterly》1997,10(3):109-112

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The JAL Guide to the Professional Literature     

Laura Reiner  Leslie Stebbins 《The Journal of Academic Librarianship》2009,35(6):609-619

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The JAL Guide to the Professional Literature     

Laura Reiner  Leslie Stebbins 《The Journal of Academic Librarianship》2009,35(2):195-204

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The JAL Guide to the Professional Literature     

Laura Reiner  Leslie Stebbins 《The Journal of Academic Librarianship》2009,35(5):498-507

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What Canadian youth tell us about disclosing abuse     

Michael Ungar  Leslie M. Tutty  Sheri McConnell  Ken Barter  Judi Fairholm 《Child abuse & neglect》2009,33(10):699-708

ObjectiveTo report findings from a study of anonymous disclosures of abuse experiences among a national sample of youth in Canada who participated in violence prevention programming.MethodsA qualitative analysis was done of a purposeful sample of 1,099 evaluation forms completed following Red Cross RespectED violence prevention programming delivered between 2000 and 2003. Forms were selected based on program facilitators identifying voluntary, anonymous disclosures by youth participants of neglect and emotional, physical, and sexual abuse. Additional data for this analysis includes 27 interviews and focus groups that were used to understand the context of these disclosures and to engage the help of youth and program facilitators in the interpretation of findings.ResultsWhile this study is exploratory and non-representative in its design, findings suggest high rates of hidden abuse, with less than a quarter of youth with abuse experiences reporting a disclosure. Disclosure patterns vary with boys, youth aged 14–15, victims of physical abuse, and those abused by a family member being most likely to disclose to professionals or the police. Interviews help to explain the large number of youth who express reticence to disclose to professionals. Specifically, the data show a perception among youth of negative consequences following disclosure.ConclusionsThis data raises questions regarding why youth are reluctant to report abuse to professionals, preferring to cope independently or by confiding in peers. Youth in this study report feeling anxious about disclosing to authorities, fearful of the potential loss of control over decisions which affect them.Practice implicationsFindings suggest that professionals who provide support to young people's own networks of family and friends may help to facilitate youths’ disclosures of abuse. Furthermore, prevention programming that promotes a positive attitude towards disclosure of abuse experiences and provides an anonymous forum (such as an evaluation form) in which to do so is likely to encourage more young people to disclose.  相似文献   

Associations between intensity of child welfare involvement and child development among young children in child welfare     

Aubyn C. Stahmer  Michael Hurlburt  Sarah McCue Horwitz  John Landsverk  Jinjin Zhang  Laurel K. Leslie 《Child abuse & neglect》2009,33(9):598-611

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Data gathering and analysis for needs assessment: A case study     

Christin Lundberg  Jennifer L. Elderman  Patricia Ferrell  Leslie Harper 《Performance Improvement》2010,49(8):27-34

Various data‐gathering and analysis methods available in our profession's literature, current and past, provide rich options for conducting quality needs assessments. These methods assisted with a thorough needs assessment for a billable hours issue in the parts and service department of a large, power tool and equipment retailer based in the Midwestern United States.  相似文献   

Infant Pathways to Externalizing Behavior: Evidence of Genotype × Environment Interaction     

Leslie D. Leve  David C. R. Kerr  Daniel Shaw  Xiaojia Ge  Jenae M. Neiderhiser  Laura V. Scaramella  John B. Reid  Rand Conger  David Reiss 《Child development》2010,81(1):340-356

To further the understanding of the effects of early experiences, 9-month-old infants were observed during a frustration task. The analytical sample was composed of 348 linked triads of participants (adoptive parents, adopted child, and birth parent[s]) from a prospective adoption study. It was hypothesized that genetic risk for externalizing problems and affect dysregulation in the adoptive parents would independently and interactively predict a known precursor to externalizing problems: heightened infant attention to frustrating events. Results supported the moderation hypotheses involving adoptive mother affect dysregulation: Infants at genetic risk showed heightened attention to frustrating events only when the adoptive mother had higher levels of anxious and depressive symptoms. The Genotype × Environment interaction pattern held when substance use during pregnancy was considered.  相似文献   

Improving the Comparability and Local Usefulness of International Assessments: A Look Back and A Way Forward     

Leslie Rutkowski  David Rutkowski 《Scandinavian Journal of Educational Research》2018,62(3):354-367

Over time international large-scale assessments have grown in terms of number of studies, cycles, and participating countries, many of which are a heterogeneous mix of economies, languages, cultures, and geography. This heterogeneity has meaningful consequences for comparably measuring both achievement and non-achievement constructs, such as social and emotional skills. In this paper we propose one way to directly incorporate country-specific differences into the methods used to construct background scales. We use research that demonstrates data quality issues in international assessment and the degree to which these issues can impact inferences. Our proposed solution incorporates innovations that have been developed for achievement measures but have not been applied to background scales. We demonstrate this possible solution with PISA 2012 data.  相似文献