254 research outputs found

    Water temperature during winter may control striped bass recruitment during spring by affecting the development time of copepod nauplii

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    Striped bass (Morone saxatilis) are anadromous fish that support an important fishery along the east coast of North America. In Chesapeake Bay, strong juvenile recruitment of striped bass can occur when larvae overlap with high concentrations of their zooplankton prey, but the mechanisms fostering the temporal overlap are unknown. Here, the influence of winter temperature on the peak abundances of a key prey, Eurytemora carolleeae, was estimated with a temperature-dependent developmental model. The role of these peaks in regulating striped bass recruitment was explored in three nursery areas: upper Chesapeake Bay, Choptank River, and Patuxent River. Model results indicated that cold winters delay the timing and increase the size of peak E. carolleeae spring abundance. When the model output was used in regression relationships with striped bass juvenile recruitment and freshwater discharge, the regression models explained up to 78% of annual recruitment variability. Results suggests that cold, wet winters could increase the chance of a match between striped bass larvae and high concentrations of their prey. This mechanistic link between winter temperatures and striped bass production, acting through prey dynamics, could further understanding of fish recruitment variability and indicates that warmer winters could negatively affect some striped bass populations

    Tea in Appalachia

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    In this video the author looks at the history and culture of tea in Appalachia, and its importance in the regio

    "Mad to be Saved": On the Borderline of Expectation and Desire in Joyce Johnson's Come and Join the Dance

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    1950s America was an America wrought with strict stereotypical gender roles, leading to an increase in the diagnoses for anxiety and depression in women. In 1980, Borderline Personality Disorder, a diagnosis which focusses more on the absence of identity, was coined, and better encompassed the experiences of 1950s women. Using Joyce Johnson's "Come and Join the Dance", this thesis breaks down the criteria of Borderline Personality Disorder and analyzes how the diagnosis closely intersects with the circumstances 1950s women underwent. In Johnson's account, she flips the narrative to work in her favor, exercising catharsis, rather than become plagued or victimized by her involuntary disposition. Thus, Johnson's unique approach to gender roles and, arguably, mental illness highlights the truth of the 1950s by rejecting the norm rather than fall prey to the compliance that plausibly warranted the demise of many of her contemporaries

    Mercury concentration and speciation in coastal rainwater

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    Mercury exists in mainly two oxidation states in the atmosphere, Hg0 and Hg(II). Inorganic divalent mercury, Hg(II), has a greater solubility; therefore is in higher concentration in rainwater, than Hg0. The toxic species, methylmercury is an organic form of Hg(II) and is present in low concentration. Mercury is released into the atmosphere by natural and anthropogenic sources. Rainwater is thought to be a main removal mechanism for atmospheric mercury. The concentration and speciation of mercury were determined in rainwater from Wilmington, NC, from September 1, 2003 to September 30, 2005. Volume weighted averages for total Hg in unfiltered rainwater, total dissolved Hg, particulate Hg, dissolved gaseous Hg (Hg0) and methyl-Hg were 52.9 ± 4.7 pM, 40.6 ± 4.0 pM, 13.7± 1.5 pM, 4.3 ± 0.9 pM and 1.1 ± 0.1 pM, respectively. All mercury species were present in all seasons with no significant difference in concentrations between summer and winter, except dissolved gaseous mercury concentration was higher in the winter, with a higher ratio of Hg(II)/Hg(0) in summer relative to winter events. Diurnal variation was seen where Hg(II) decreased during the day into the night, suggesting photochemical reduction of Hg(II). All Hg concentrations were higher in continental storms relative to coastal rain events. Both total mercury species (UFHg and TDHg) were positively correlated with particulate mercury. Total mercury species were washed out of the atmosphere by rainwater with lower concentrations for larger rain events. A weak positive correlation was observed between TDHg and NO3 -, TDHg and SO4 2-, DGHg and Cl-, and Hgpart and DOC. The photochemistry of mercury from Wilmington was also investigated. UFHg, TDHg, and DGHg were generally produced upon irradiation of rainwater samples by simulated sunlight. Particulate Hg concentrations generally declined upon irradiation and MMHg concentrations showed no pattern, in some instances, increasing, decreasing or remaining the same. Positive correlation was observed between, production of UFHg and Hgpart and a negative correlation was observed between production of TDHg and Hgpart. Continental events increased in Hgpart while decreasing in TDHg, whereas coastal events increased in TDHg while decreasing in Hgpart after irradiation. Seasonal differences between Hg species were similar with an increase in TDHg and DGHg, while decreasing in Hgpart and greater changes were observed during the winter. Diurnal variations of Hg(II)/Hg(0) ratio increased during the afternoon and decreased there after. Atmospheric global inputs by natural and anthropogenic sources, 4.1 x 106 kg or 2.0 x 107 mol per year, were in good agreement with calculated total flux of mercury removed via wet deposition, 3.8 x 106 kg or 1.9 x 107 mol per year, suggesting that essentially all mercury released into the atmosphere is removed via rain

    Maternal depression and parenting stress among families of children with AD/HD: child and family correlates

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    Research has shown that child and maternal factors contribute to parenting stress and depression among mothers of children with AD/HD. The purpose of the current study was to identify the extent to which maternal cognitive distortions are associated with parenting stress and depression. Twenty-four mothers of children with AD/HD completed measures of child and maternal psychopathology as well as maternal cognitive distortions. Both maternal depression and parenting stress were predicted by maternal characteristics above child characteristics. Child internalizing behaviors and parenting-specific cognitive distortions predicted whether mothers were classified as stressed or stressed and depressed. The results indicated that cognitive distortions, especially those pertaining to parenting, play a significant role in the distress experienced by mothers of children with AD/HD

    A Qualitative Study of Supervisors' Reflections on Providing Sanctioned Supervision

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    Sanctioned supervision, sometimes referred to as mandated supervision or professional monitoring, is intended to protect the public, reduce further counselor ethical/legal violations, and improve the professional practice of the counselor adjudicated for unprofessional behavior. Sanctioned supervision is a common remediation intervention required by state regulatory board. However, there is a lack of research on the practice of sanctioned supervision and the perceptions of the sanctioned supervisors. A qualitative research approach was used to better understand the experiences of four supervisors who provided sanctioned supervision within the past year as part of a state regulatory board remediation process. The main themes from the qualitative study included the following: supervisors finding the supervision process to be unique from traditional supervision, and supervisors experience ambivalence about the sanctioned supervision process. Practice considerations for supervisors producing sanctioned supervision are discussed

    Legal aspects of special education with respect to program inclusion or exclusion based solely on disabilities

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    With the advent of the civil rights movement in America in the 1960's, equality of education for all students has been in the forefront of judicial decisions. With the passage of numerous public laws, Congress has provided definitions of the rights of individuals with disabilities and guarantees of due process. However, by not clearly defining these rights, Congress left clarification to the courts and created problems for educators and administrators. The procedure used in this study involved analysis of judicial decisions, case law and federal and selected state statutes. Primary sources were state and federal court decisions involving exceptional children and children with disabilities. Students attended either elementary or secondary public schools; no cases involving private schools were included. No cases involving public or private community college, college or university students were reviewed

    Art and the Aesthetic of Graphic Novels as Seen in "The Picture of Dorian Gray"

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    Oscar’s views about Art for Art’s Sake were the primary focus of “The Decay of Lying: A Dialogue,” and "The Picture of Dorian Gray." Wilde believed that good art, real art, is a “lie”—it should not be a reflection of life, but rather influence life. In that way, people should make art from their own imaginations rather than what they see in the real world. Since it was first published, "The Picture of Dorian Gray" has been adapted into several other medias including graphic novels. Each graphic novel has a different style of art that all serve the same purpose successfully—to tell the tale of Dorian Gray and his portrait. This essay explores how graphic novels—specifically the adapted versions of "The Picture of Dorian Gray"—are representative of the primary text, as well as how the graphic novel medium provides the avenues necessary for the secondary texts to flourish as “Art for Art’s Sake.

    Predicting children's emotion regulation behaviors from maternal emotion socialization and vagal suppression

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    The relation between early maternal emotion socialization and children's emotion regulation behaviors were examined across a short-term longitudinal study. Participants were 196 children with data collected at age 3.5 and 4.5-years-old. It was hypothesized that children's vagal suppression at age 4.5 would partially mediate the association between maternal emotion socialization and children's emotion regulation behaviors. To assess maternal emotion socialization, mothers completed the Coping with Children's Negative Emotions (CCNES) questionnaire and a supportive and non-supportive aggregate were created. To assess children's emotion regulation behaviors mothers completed the Emotion Regulation Checklist (ERC) and trained research assistants coded a laboratory frustration task for observed emotion regulation behaviors. Results indicate that emotion socialization did not predict vagal suppression or emotion regulation behaviors. Further, vagal suppression was not associated with emotion regulation behaviors. Thus, a mediation effect was not present. Results are discussed in terms of directions for future research
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