185 research outputs found

    Post Graduation Assessment Of Learning Outcomes

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    The objective of this work is to suggest a process for improving the assessment of educational outcomes in universities.  Improved accountability and assessment has become an important direction in academic institutional research, but the underlying question –how best to accomplish this goal is an open question.  A framework is first described which promotes the categorization of academic assessment.  Based on this framework, a preliminary instrument was developed and piloted.  The results of this study are reported and plans for future efforts are described

    Analyzing the Prophylactic and Therapeutic Role of Inoculation to Facilitate Resistance to Conspiracy Theory Beliefs

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    Conspiracy theories pose a variety of social and psychological consequences for individuals and society, and research suggests that around half of the U.S. population believes at least one. A two-phase inoculation experiment was conducted. Inoculated participants reported more negative general attitudes toward conspiracy theories and lower Phase II generic conspiracist beliefs, which are both indicators of harm-reduction and the beneficial healing impacts of therapeutic inoculation. The addition of therapeutic inoculation as a harm-reduction or healing technique in practitioners’ stakeholder response toolkit is a valuable contribution to both theory and practice

    Fandom and activism: Experimenting with memetic communication appeals about human rights issues during the 2022 winter Olympic games

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    In the sports context, activism is a popular focus of inquiry. In fact, scholars have posited that sports present an ideal platform for human rights and political activism and protest (Agyemang, Singer, & DeLorme, 2010; Coombs & Cassilo, 2017; Kaufman & Wolff, 2010). This study aims to analyze the persuasiveness of memetic communication in the global sports context by investigating the influence of exposure to social advocacy memes on issue importance and general attitudes toward global human rights. This experiment relied on MTurk participants in an online experiment using Qualtrics software hosted by the Communication Research Lab at a Midwest University. We measure the persuasive influence of a variety of persuasive strategies (e.g., assertive, comparative, calls to action, and appeals to self-efficacy) as well as explicit affiliations within a real-time global sports context (e.g., 2022 Winter Olympics). These findings add to existing scholarship by focusing on post-exposure behavioral intentions (e.g., diffusion intentions, advocacy intentions, consumption intentions, and information-seeking intentions) likely to spur activism and advocacy. These findings support the position that memetic communications help to serve as a motivational catalyst for information-seeking behaviors about global human rights issues in real-time global sports contexts. Discussion and limitations are provided

    A perpetual switching system in pulmonary capillaries

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    Of the 300 billion capillaries in the human lung, a small fraction meet normal oxygen requirements at rest, with the remainder forming a large reserve. The maximum oxygen demands of the acute stress response require that the reserve capillaries are rapidly recruited. To remain primed for emergencies, the normal cardiac output must be parceled throughout the capillary bed to maintain low opening pressures. The flow-distributing system requires complex switching. Because the pulmonary microcirculation contains contractile machinery, one hypothesis posits an active switching system. The opposing hypothesis is based on passive switching that requires no regulation. Both hypotheses were tested ex vivo in canine lung lobes. The lobes were perfused first with autologous blood, and capillary switching patterns were recorded by videomicroscopy. Next, the vasculature of the lobes was saline flushed, fixed by glutaraldehyde perfusion, flushed again, and then reperfused with the original, unfixed blood. Flow patterns through the same capillaries were recorded again. The 16-min-long videos were divided into 4-s increments. Each capillary segment was recorded as being perfused if at least one red blood cell crossed the entire segment. Otherwise it was recorded as unperfused. These binary measurements were made manually for each segment during every 4 s throughout the 16-min recordings of the fresh and fixed capillaries (>60,000 measurements). Unexpectedly, the switching patterns did not change after fixation. We conclude that the pulmonary capillaries can remain primed for emergencies without requiring regulation: no detectors, no feedback loops, and no effectors-a rare system in biology. NEW & NOTEWORTHY The fluctuating flow patterns of red blood cells within the pulmonary capillary networks have been assumed to be actively controlled within the pulmonary microcirculation. Here we show that the capillary flow switching patterns in the same network are the same whether the lungs are fresh or fixed. This unexpected observation can be successfully explained by a new model of pulmonary capillary flow based on chaos theory and fractal mathematics

    Atmospheric Acetaldehyde: Importance of Air-Sea Exchange and a Missing Source in the Remote Troposphere.

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    We report airborne measurements of acetaldehyde (CH3CHO) during the first and second deployments of the National Aeronautics and Space Administration (NASA) Atmospheric Tomography Mission (ATom). The budget of CH3CHO is examined using the Community Atmospheric Model with chemistry (CAM-chem), with a newly-developed online air-sea exchange module. The upper limit of the global ocean net emission of CH3CHO is estimated to be 34 Tg a-1 (42 Tg a-1 if considering bubble-mediated transfer), and the ocean impacts on tropospheric CH3CHO are mostly confined to the marine boundary layer. Our analysis suggests that there is an unaccounted CH3CHO source in the remote troposphere and that organic aerosols can only provide a fraction of this missing source. We propose that peroxyacetic acid (PAA) is an ideal indicator of the rapid CH3CHO production in the remote troposphere. The higher-than-expected CH3CHO measurements represent a missing sink of hydroxyl radicals (and halogen radical) in current chemistry-climate models

    Field observational constraints on the controllers in glyoxal (CHOCHO) reactive uptake to aerosol

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    Glyoxal (CHOCHO), the simplest dicarbonyl in the troposphere, is a potential precursor for secondary organic aerosol (SOA) and brown carbon (BrC) affecting air quality and climate. The airborne measurement of CHOCHO concentrations during the KORUS-AQ (KORea–US Air Quality study) campaign in 2016 enables detailed quantification of loss mechanisms pertaining to SOA formation in the real atmosphere. The production of this molecule was mainly from oxidation of aromatics (59 %) initiated by hydroxyl radical (OH). CHOCHO loss to aerosol was found to be the most important removal path (69 %) and contributed to roughly ∼ 20 % (3.7 µg sm−3 ppmv−1 h−1, normalized with excess CO) of SOA growth in the first 6 h in Seoul Metropolitan Area. A reactive uptake coefficient (γ) of ∼ 0.008 best represents the loss of CHOCHO by surface uptake during the campaign. To our knowledge, we show the first field observation of aerosol surface-area-dependent (Asurf) CHOCHO uptake, which diverges from the simple surface uptake assumption as Asurf increases in ambient condition. Specifically, under the low (high) aerosol loading, the CHOCHO effective uptake rate coefficient, keff,uptake, linearly increases (levels off) with Asurf; thus, the irreversible surface uptake is a reasonable (unreasonable) approximation for simulating CHOCHO loss to aerosol. Dependence on photochemical impact and changes in the chemical and physical aerosol properties “free water”, as well as aerosol viscosity, are discussed as other possible factors influencing CHOCHO uptake rate. Our inferred Henry's law coefficient of CHOCHO, 7.0×108 M atm−1, is ∼ 2 orders of magnitude higher than those estimated from salting-in effects constrained by inorganic salts only consistent with laboratory findings that show similar high partitioning into water-soluble organics, which urges more understanding on CHOCHO solubility under real atmospheric conditions
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