42 research outputs found

    Promotion Outcomes and Attributions: Their Effects on Career Satisfaction and Career-Oriented Behavior

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    Marcia Wright Kassner is an Assistant Professor in the Department of Management, University of North Dakota. Bruce J. Eberhardt is an Associate Professor in the Department of Management, University of North Dakota

    SEIS: Insight’s Seismic Experiment for Internal Structure of Mars

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    By the end of 2018, 42 years after the landing of the two Viking seismometers on Mars, InSight will deploy onto Mars’ surface the SEIS (Seismic Experiment for Internal Structure) instrument; a six-axes seismometer equipped with both a long-period three-axes Very Broad Band (VBB) instrument and a three-axes short-period (SP) instrument. These six sensors will cover a broad range of the seismic bandwidth, from 0.01 Hz to 50 Hz, with possible extension to longer periods. Data will be transmitted in the form of three continuous VBB components at 2 sample per second (sps), an estimation of the short period energy content from the SP at 1 sps and a continuous compound VBB/SP vertical axis at 10 sps. The continuous streams will be augmented by requested event data with sample rates from 20 to 100 sps. SEIS will improve upon the existing resolution of Viking’s Mars seismic monitoring by a factor of ∼ 2500 at 1 Hz and ∼ 200 000 at 0.1 Hz. An additional major improvement is that, contrary to Viking, the seismometers will be deployed via a robotic arm directly onto Mars’ surface and will be protected against temperature and wind by highly efficient thermal and wind shielding. Based on existing knowledge of Mars, it is reasonable to infer a moment magnitude detection threshold of Mw ∼ 3 at 40◦ epicentral distance and a potential to detect several tens of quakes and about five impacts per year. In this paper, we first describe the science goals of the experiment and the rationale used to define its requirements. We then provide a detailed description of the hardware, from the sensors to the deployment system and associated performance, including transfer functions of the seismic sensors and temperature sensors. We conclude by describing the experiment ground segment, including data processing services, outreach and education networks and provide a description of the format to be used for future data distribution

    The Nature And Consequences Of Part-Time Work: A Test Of Hypotheses

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    This study investigated hypotheses developed by Feldman (1990) regarding the impact of different types of part-time working arrangements on various attitudes, behaviors, and chosen frames of reference. Using data collected from 240 part-time workers employed by a supermarket chain, significant differences across the types of part-time work arrangements were found. For example, permanent as opposed to temporary part-time employees were more satisfied with and committed to their organizations. Further, students are more likely to consider themselves temporary and voluntary part-time employees than are non-students. Additional findings are discussed and needs for future research are noted

    Predictors of the Implementation of Employee Drug Testing

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