1,415 research outputs found

    Built for Continuous Improvement: Professional Accountability in the Academic Setting

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    One way to organize schools to continue to improve is to build the culture around the natural spirit of its people. Rich Sinclair collected data from one of North Carolina’s highest-rated public schools to learn how the design and development of their professional culture have progressed over the last five years, including through the height of the pandemic. This mixed-methods study on the K-12 efficacy of values-driven organizational development offers three lessons that can help guide systematic efforts to align more school work environments with the best in the world

    Smart DC/DC Wall Plug Design For The DC House Project

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    The present day duplex wall receptacle in the United States provides 120Vrms AC at 60Hz, which comes from a standard set for AC loads by the National Electrical Manufacturers Association. With a DC system, such as what is used in the DC House project currently being developed at Cal Poly, providing DC power to DC loads presents a technical challenge due to the different required DC operating voltages of the loads. This thesis entails the design and construction of a Smart DC/DC Wall Plug, which can automatically adjust its output voltage to match any required DC load voltages. In the DC House implementation, renewable energy sources generate power to feed a 48V DC Bus. The Smart DC/DC Wall Plug converts power from the 48V bus to the appropriate voltage and power levels needed by the DC loads. The Smart DC/DC Wall Plug relies on load current detection, and uses a 10-bit digital potentiometer and a programmable current DAC to adjust the feedback network, thereby changing the output voltage. A dual channel 100W PCB prototype utilizing a STMF302R8 microcontroller is implemented for this design while confining to the NEMA wall outlet form factor. Results of hardware test verify the functionality of the Smart DC/DC Wall Plug in producing the required DC load voltages. Technical issues during the development of the Smart DC/DC Wall Plug will be described, along with suggestions to further improve from the current design

    Independent Orbiter Assessment (IOA): Analysis of the crew equipment subsystem

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    The results of the Independent Orbiter Assessment (IOA) of the Failure Modes and Effects Analysis (FMEA) and Critical Items List (CIL) are presented. The IOA approach features a top-down analysis of the hardware to determine failure modes, criticality, and potential critical (PCIs) items. To preserve independence, this analysis was accomplished without reliance upon the results contained within the NASA FMEA/CIL documentation. The independent analysis results coresponding to the Orbiter crew equipment hardware are documented. The IOA analysis process utilized available crew equipment hardware drawings and schematics for defining hardware assemblies, components, and hardware items. Each level of hardware was evaluated and analyzed for possible failure modes and effects. Criticality was assigned based upon the severity of the effect for each failure mode. Of the 352 failure modes analyzed, 78 were determined to be PCIs

    Exploring thoughts of self-harm and suicide

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    EFFECT OF STROKE RATE ON KINEMATIC CHARACTERISTICS OF SIMULATED ON-WATER DRAGON BOAT PADDLING

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    The purpose of this study was to determine the effect of stroke rate on the 3D kinematics of simulated on-water dragon boat paddling. Twenty dragon boat paddlers (female=12, male=8) ranging in experience level, paddled in a simulated on-water dragon boat condition in a motion laboratory at stroke rates of 40, 50 and 60 strokes·min-1. With an increase in stroke rate, there was a significant decrease in stroke length and increase in drive time to total stroke time ratio (

    Beth Scroggins Interview 2021

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    In a short interview, Beth Scroggins discusses her experiences working as the Director of the Student Health and Counseling Center at Western Oregon University. She describes her role as director and daily activities. She also describes her experience in her transition from the South to the Pacific Northwest

    ELITE AND SUB ELITE FLAT WATER SPRINT KAYAKERS PERFORMANCE COMPARISON: A PRELIMINARY RESULT

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    The purpose of the present study was to compare the effects of using a fixed and swivel seat between elite and sub elite kayakers: conducted on a 200 metre simulation race in the laboratory setting. One elite and one sub elite male sprint kayaker participated in this study, performing on both seat conditions. Significantly increased results were found in paddle force and stroke rate using the swivel seat for the sub elite kayaker (
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