3,781 research outputs found

    CHORUSING PATTERNS OF A DIVERSE ANURAN COMMUNITY, WITH AN EMPHASIS ON SOUTHERN CRAWFISH FROGS (LITHOBATES AREOLATUS AREOLATUS)

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    Wildlife surveys have a critical role in conservation efforts and the collection of life history data. For anuran amphibians these surveys often focus on calling males. In order to further our understanding of anuran ecology, we used automated recording systems to monitor the calling activities of the anuran communities at two beaver-formed lakes and one cattle pond in southeastern Oklahoma. We documented 14 anuran species between 5 February and 28 April 2012. Temperature had a significant effect on the calling patterns of Eastern Narrow-mouthed Toads (Gastrophryne carolinensis), Green Treefrogs (Hyla cinerea), Gray Treefrogs (Hyla versicolor), Southern Crawfish Frogs (Lithobates areolatus areolatus), and Cajun Chorus Frogs (Pseudacris fouquettei). Temperature did not have a significant effect on the calling patterns of Dwarf American Toads (Anaxyrus americanus charlesmithi), American Bullfrogs (Lithobates catesbeianus), or Green Frogs (Lithobates clamitans). There was not a significant relationship between rainfall and calling for L. a. areolatus. The presence of several of these species, including L. a. areolatus and Hurter’s Spadefoots (Scaphiopus hurterii) was unusual because these anurans typically breed in ephemeral, fishless pools, but the beaver lakes are permanent and sustain populations of carnivorous fishes

    Goodyera pubescens (Willd.) R. Br.

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    https://thekeep.eiu.edu/herbarium_specimens_byname/21461/thumbnail.jp

    Productivity and Protest: The Institutionalization of Activism

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    Under capitalism, time spent being productive and effective is the ultimate goal of human life and interaction. What can be produced or accomplished and how much it is worth is the guiding principle of labor, governance, and now, protest. Over time, protest culture and activism have been institutionalized and fallen into the same patterns of the systems they intend to change. The demand to be productive results in activists pulling long hours for underpaid or even unpaid labor, with a focus on filling canvassing quotas, and counting donations, rather than engaging in meaningful community-based action. This inevitably leads to the burnout of activists, and actively stifles the revolutionary potential of movements by centering hours spent and accolades rather than the goal of worldchanging. This phenomenon is a result of colonial white supremascist culture inside of activist spaces that must be expunged if movements are to be truly radical spaces. To respond to this, I offer an alternative worldchanging strategy based in community care and sustainable, communal work

    Patris Mei Laudatio Ovatioque

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    Origins of Purpose in Life: Refining our Understanding of a Life Well Lived

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    Purpose can be characterized as a central, self-organizing life aim. Central in that when present, purpose is a predominant theme of a person’s identity. Self-organizing in that it provides a framework for systematic behavior patterns in everyday life. As a life aim, a purpose generates continual goals and targets for efforts to be devoted. A purpose provides a bedrock foundation that allows a person to be more resilient to obstacles, stress, and strain. In this paper, we outline a theoretical model of purpose development. Besides outlining various essential ingredients to creating a purpose in life, we describe three broad pathways. The first process is proactive involving effort over time and only resulting in a purpose after gradual refinement and clarification. The second process is reactive involving a transformative life event where a purpose arises and adds clarity to the person\u27s life. The third process is social learning - involving the formation of purpose through observation, imitation, and modeling. Our aim is to stimulate more research on this higher-level construct in the architecture of personality

    CHORUSING PATTERNS OF A DIVERSE ANURAN COMMUNITY, WITH AN EMPHASIS ON SOUTHERN CRAWFISH FROGS (LITHOBATES AREOLATUS AREOLATUS)

    Get PDF
    Wildlife surveys have a critical role in conservation efforts and the collection of life history data. For anuran amphibians these surveys often focus on calling males. In order to further our understanding of anuran ecology, we used automated recording systems to monitor the calling activities of the anuran communities at two beaver-formed lakes and one cattle pond in southeastern Oklahoma. We documented 14 anuran species between 5 February and 28 April 2012. Temperature had a significant effect on the calling patterns of Eastern Narrow-mouthed Toads (Gastrophryne carolinensis), Green Treefrogs (Hyla cinerea), Gray Treefrogs (Hyla versicolor), Southern Crawfish Frogs (Lithobates areolatus areolatus), and Cajun Chorus Frogs (Pseudacris fouquettei). Temperature did not have a significant effect on the calling patterns of Dwarf American Toads (Anaxyrus americanus charlesmithi), American Bullfrogs (Lithobates catesbeianus), or Green Frogs (Lithobates clamitans). There was not a significant relationship between rainfall and calling for L. a. areolatus. The presence of several of these species, including L. a. areolatus and Hurter’s Spadefoots (Scaphiopus hurterii) was unusual because these anurans typically breed in ephemeral, fishless pools, but the beaver lakes are permanent and sustain populations of carnivorous fishes

    Thermal barrier coating life prediction model development

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    This report describes work performed to determine the predominat modes of degradation of a plasma sprayed thermal barrier coating system and to develop and verify life prediction models accounting for these degradation modes. The primary TBC system consisted of a low pressure plasma sprayed NiCrAlY bond coat, an air plasma sprayed ZrO2-Y2O3 top coat, and a Rene' 80 substrate. The work was divided into 3 technical tasks. The primary failure mode to be addressed was loss of the zirconia layer through spalling. Experiments showed that oxidation of the bond coat is a significant contributor to coating failure. It was evident from the test results that the species of oxide scale initially formed on the bond coat plays a role in coating degradation and failure. It was also shown that elevated temperature creep of the bond coat plays a role in coating failure. An empirical model was developed for predicting the test life of specimens with selected coating, specimen, and test condition variations. In the second task, a coating life prediction model was developed based on the data from Task 1 experiments, results from thermomechanical experiments performed as part of Task 2, and finite element analyses of the TBC system during thermal cycles. The third and final task attempted to verify the validity of the model developed in Task 2. This was done by using the model to predict the test lives of several coating variations and specimen geometries, then comparing these predicted lives to experimentally determined test lives. It was found that the model correctly predicts trends, but that additional refinement is needed to accurately predict coating life

    Increase and development of wheat production, phase I (1971-March 1980): draft interim report.

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    bitstream/item/126672/1/ID-5623.pd

    Public Policy, Health Insurance and the Transition to Adulthood

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    This paper assesses the impact of two recent policies designed to increase insurance coverage for older teens and young adults. The introduction of SCHIP in 1997 enabled low and moderate income teens up to age 19 to gain access to public health insurance. More recent policies adopted by a number of states have enabled young adults between the ages of 19 and (typically) 24 to remain covered under their parents’ health insurance. We take advantage of the discrete break in coverage at age 19 to evaluate the impact of SCHIP. We also use quasi-experimental variation across states and years along with the targeted nature of eligibility to evaluate the impact of these “extended parental coverage” laws. Our results suggest that both types of policies were effective at increasing health insurance coverage, especially among their respective target populations. Overall, SCHIP increases insurance coverage by 3 percentage points; those with incomes under 150 percent of poverty are found to experience a 7 percentage point increase. We find little evidence of crowd-out associated with the introduction of SCHIP. Extended parental coverage laws have minimal aggregate effects on coverage, but they increase coverage by up to 5 percentage points for select groups. These laws may generate reverse crowd-out, as individuals leave public insurance coverage to take advantage of the private coverage now available to them.
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