268 research outputs found
Acute Copper (Cu) Toxicity in Dragonfly Naiads (Insecta: Odonata)
The objective of this study was to examine the effects copper (Cu) on mortality within a pair of test groups of naiads in the order Odonata, and to replicate previous observations regarding their potential uses as indicators for water quality. Few past studies have examined toxicity within relation to the odonates. It has been suggested that this order may contain valuable model organisms (Tollett et al., 2008). Very little focus has been given to odonates as bioindicators, with the few studies done being performed on species that would typically inhabit lentic environments (Trevino, 1999). Similarly, the test subjects for this study belong to a species of skimmer (Anisoptera: Libellulidae), which were observed over the course of a pair of 96-hour, non-renewal acute toxicity assays. Findings indicate a high resistance to copper toxicity. Although examinations on the effects of Cu on fitness were not feasible during the course of study, trends in mortality indicate stress in concentrations below 10 ppm (parts per million). This research suggests that skimmers may be useful as laboratory model organisms in the field of environmental toxicology
It Just Went Viral: Now What?
In March of 2016, one post made by Troy University Libraries âcaught fireâ and went viral. What does it mean to âGo Viral?â If it happens at your library, what can you do to take advantage of the unexpected publicity? In this article, librarians from Troy University will discuss the importance of social media for libraries, including how Troy University Libraries developed a social media presence over a period of eight years. The authors will describe Troy University Librariesâ experience with a social media post that went viral, including challenges that came with the unexpected publicity, and offer recommendations for other libraries using social media
Hanging up and hanging out: A qualitative case study of college men imagineering a short-term study abroad engineering course in Spain
This naturalistic inquiry case study examined the experiences of five college men participating in a two-week, summer study abroad course administered by a Midwestern, public land-grant university. The short-term program model is popular with students and universities in the United States as an affordable and convenient way to increase the number of students participating in education abroad. However, there is limited research examining the phenomenon, especially qualitative research on men's participation. My study is the only known naturalistic inquiry qualitative case study to include participant observation in situ focused specifically on U.S. college men's short-term program experiences. I use the term imagineer to convey the process of imagining a future participation in study abroad then carrying those imaginings into the construction of the experience.My study design used participant observations, including travel with the men abroad, and interviews before, during and after the trip as well as photographs, drawings and participant interactions with those artifacts. My experience as director of a study abroad office and my travel background as a participant on multiple study abroad programs augmented my findings. The participants in my study were traditional-aged, emerging adults actively constructing identities and focused on self, happiness, instant gratification and consumption (Arnett, 2000; Nelson, 2003). They relied on multiple imaginaries (Harkonen & Dervin, 2015, 2016) to imagineer their study abroad experiences. Doing gender (West & Zimmerman, 1987) emerged as salient as the men constructed gender roles and sought social capital (Bourdieu & Passeron, 1977) through masculine performances abroad. As participants in a course compressed into two weeks, the men experienced time as limited and responded accordingly by intensifying the pace of their actions and engaging in riskier behaviors, like the consumption of alcohol, designed to meet lightly crafted expectations for having fun and making friends.Through ongoing analysis, I arrived at four primary themes with multiple subthemes related to my research questions. As a part of my analysis, I explored the men's interpersonal relationships, their responses to perceptions of time, their anticipation of fun adventure and their gendered behaviors and vulnerability as they imagineered their experiences in the study abroad space. My findings enhance the depth of understanding of the short-term study abroad phenomenon, contribute new perspectives on men's participation and inform implications for research and practice in the field of education abroad
Oklahoma State University Faculty Support for Study Abroad as a Component of University Internationalization Efforts
Based on data from a survey administered during the spring 2010 semester at Oklahoma State University, this study looks at faculty, internationalization and study abroad. With a focus on faculty members at the university who participate in and support internationalization efforts, the study observes the relationship between those faculty members' internationalization activities and their participation in and support for the increasing study abroad efforts on campus. The study examines the factors that demonstrate faculty attitudes and behaviors related to study abroad and internationalization. The results of this study indicate that support for and participation in study abroad is connected to faculty involvement in internationalization at the university. Faculty involved in international activities are more likely to also support study abroad. The following factors related to faculty participation in internationalization supported by the results of this study include: gender, discipline, level of instruction, appointment status, and participation in international research. Two of the four hypothesis devised to measure the results in relation to the problem statement are supported by the data. Faculty involved in campus internationalization efforts are likely to be involved in study abroad programs as well, and faculty who are involved in campus internationalization efforts are also more likely to promote study abroad for their students. The study does not demonstrate significance for the remaining two hypotheses. Faculty at OSU with greater international experience, including foreign language aptitude, are not shown in the results to be more likely to support study abroad programs, nor are faculty who themselves studied and lived abroad more likely to promote study abroad for their students. Further research is needed to examine the factors at play in these results in an effort to better understand the role faculty serve in students' decisions to study abroad. As the demand and interest for programs increases, this study begins to provide an understanding of the participation factors, incentives, and challenges for faculty within study abroad.International Studie
Correcting surface wave bias in structure function estimates of turbulent kinetic energy dissipation rate
The combination of acoustic Doppler current profilers and the structure function methodology provides an attractive approach to making extended time series measurements of oceanic turbulence (the rate of turbulent kinetic energy dissipation Δ) from moorings. However, this study shows that for deployments in the upper part of the water column, estimates of Δ will be biased by the vertical gradient in wave orbital velocities. To remove this bias, a modified structure function methodology is developed that exploits the differing length scale dependencies of the contributions to the structure function resulting from turbulent and wave orbital motions. The success of the modified method is demonstrated through a comparison of Δ estimates based on data from instruments at three depths over a 3-month period under a wide range of conditions, with appropriate scalings for wind stress and convective forcing
De la compĂ©tence Ă lâempathie : Ă©valuation de lâĂ©volution de la perception quâont les Ă©tudiants en mĂ©decine des chirurgiens dans le cadre dâun programme associant le patient comme enseignant et la rĂ©flexion basĂ©e sur les arts
Introduction: The purpose of this study was to identify whether the incorporation of a combined Patient as teacher (PAT) and arts-based reflection (ABR) program during a surgical clerkship rotation could influence more humanistic perceptions of surgeons, using an innovative evaluation approach.
Methods: A novel, single question evaluation tool was created. Third year medical-students were asked to âlist the top 5 attributes of a surgeon, in order of perceived importanceâ both before and after their surgical clerkship rotations and participation in the PAT/ABR program. Attributes identified by students were coded as either âhumanisticâ or ânon-humanistic,â which were then analyzed using generalized linear regression models under a Bayesian framework.
Results: After participation in the PAT/ABR program, the predicted probability of students ranking a humanistic characteristic as the most important attribute of a surgeon had increased by 17%, and the predicted probability of students ranking a humanistic characteristic amongst their top three attributes for a surgeon had increased by 21%.
Conclusion: This innovative evaluative method suggested the success of a combined PAT/ABR program in encouraging a humanistic perspective of surgery and this approach could potentially be explored to evaluate other humanistic education initiatives.Résumé
Introduction : Lâobjectif de cette Ă©tude Ă©tait de dĂ©terminer si lâintroduction dâune nouvelle approche dâĂ©valuation associant la participation de Patients comme enseignants (PCE) Ă une RĂ©flexion basĂ©e sur les arts (RBA) dans un stage dâexternat en chirurgie permettait de mieux percevoir les qualitĂ©s humanistes chez les chirurgiens.
MĂ©thodes : Un nouvel outil dâĂ©valuation Ă question unique a Ă©tĂ© crĂ©Ă©. Des Ă©tudiants en troisiĂšme annĂ©e de mĂ©decine ont Ă©tĂ© invitĂ©s Ă ââĂ©numĂ©rer les cinq principaux attributs dâun chirurgien, par ordre dâimportance perçueââ, avant et aprĂšs leur stage dâexternat en chirurgie et le programme PCE/RBA. Les attributs identifiĂ©s par les Ă©tudiants ont Ă©tĂ© codĂ©s comme «âhumanistesâ» ou «ânon humanistesâ», puis analysĂ©s Ă lâaide de modĂšles de rĂ©gression linĂ©aire gĂ©nĂ©ralisĂ©e dans un cadre bayĂ©sien.
RĂ©sultats : AprĂšs leur participation au programme PCE/RBA, la probabilitĂ© prĂ©dite moyenne que les Ă©tudiants classent un trait humaniste comme lâattribut le plus important dâun chirurgien a augmentĂ© de 17 %, et la probabilitĂ© prĂ©dite que les Ă©tudiants classent un trait humaniste parmi les trois premiers attributs dâun chirurgien a augmentĂ© de 21 %.
Conclusion : Cette mĂ©thode dâĂ©valuation innovante porte Ă croire que le programme PCE/RBA rĂ©ussit en effet Ă favoriser une vision humaniste de la chirurgie. Cette approche peut ĂȘtre explorĂ©e pour Ă©valuer dâautres activitĂ©s de formation axĂ©es sur lâhumanisme
Linearly-Used Continuations in the Enriched Effect Calculus
Under non-commutative Stone duality, there is a correspondence between second
countable Hausdorff \'etale groupoids which have a Cantor space of identities
and what we call Tarski inverse monoids: that is, countable Boolean inverse
-monoids with semilattices of idempotents which are countable and
atomless. Tarski inverse monoids are therefore the algebraic counterparts of
the \'etale groupoids studied by Matui and provide a natural setting for many
of his calculations. Under this duality, we prove that natural properties of
the \'etale groupoid correspond to natural algebraic properties of the Tarski
inverse monoid: effective groupoids correspond to fundamental Tarski inverse
monoids and minimal groupoids correspond to -simplifying Tarski inverse
monoids. Particularly interesting are the principal groupoids which correspond
to Tarski inverse monoids where every element is a finite join of
infinitesimals and idempotents. Here an infinitesimal is simply a non-zero
element with square zero. Such inverse monoids are natural infinite
generalizations of finite symmetric inverse monoids. The groups of units of
fundamental Tarski inverse monoids generalize the finite symmetric groups and
include amongst their number the Thompson groups as well as the
groups of units of what we term AF inverse monoids, Krieger's ample groups
being examples. We characterize such groups as subgroups of particular kinds of
the group of homeomorphisms of the Cantor space.Comment: arXiv admin note: substantial text overlap with arXiv:1407.147
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