Picture This: Examining the Experiences of Black SGA Presidents at HBCUs Using Photo-Elicitation

This phenomenological study examined how peers, administrators, faculty, staff, and meaningful involvement influenced the experiences of Black Student Government (SGA) presidents at Historically Black Colleges or Universities (HBCU). The purpose of this study was to explore the lived experiences of Black SGA presidents at HBCUs. Eight HBCUs are represented in this study. Photo-elicitation interviews were used to collect date from nine former Black SGA presidents (four women and five men). Hermeneutic thematic analysis (van Manen, 1990) was used to make meaning of the data (interview transcripts, research memos, photographs). The emergent themes were separated into three categories: peer influences (support, developing relationships, conflict), adult influences (lack of support, support), and meaningful involvement (sense of accomplishment, inspiration, building relationships). The implications for practice and future research were discussed for advisors and Black SGA presidents

It’s Time to Unite: A Collaborative Approach to Addressing the Needs of Graduate Students of Colour

Higher education administrators often speak of the value of collaboration between student and academic affairs yet there is little empirical evidence of such collaboration. As such, graduate school services and programmes traditionally receive less attention and support than undergraduate programmes. Arguably, deficiencies in those services and programmes expose a need for collaboration, specifically for students of colour. This article explores the experiences of graduate students of colour while examining the barriers in place that tend to hinder their success in graduate school. By addressing these barriers, we present a justification for the need for collaboration between student affairs and academic affairs within graduate education

The effect of treatment on pathogen virulence.

The optimal virulence of a pathogen is determined by a trade-off between maximizing the rate of transmission and maximizing the duration of infectivity. Treatment measures such as curative therapy and case isolation exert selective pressure by reducing the duration of infectivity, reducing the value of duration-increasing strategies to the pathogen and favoring pathogen strategies that maximize the rate of transmission. We extend the trade-off models of previous authors, and represents the reproduction number of the pathogen as a function of the transmissibility, host contact rate, disease-induced mortality, recovery rate, and treatment rate, each of which may be influenced by the virulence. We find that when virulence is subject to a transmissibility-mortality trade-off, treatment can lead to an increase in optimal virulence, but that in other scenarios (such as the activity-recovery trade-off) treatment decreases the optimal virulence. Paradoxically, when levels of treatment rise with pathogen virulence, increasing control efforts may raise predicted levels of optimal virulence. Thus we show that conflict can arise between the epidemiological benefits of treatment and the evolutionary risks of heightened virulence

Cloning, sequencing, and characterization of the hexahydro-1,3,5-trinitro-1,3,5-triazine degradation gene cluster from Rhodococcus rhodochrous

Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) is a high explosive which presents an environmental hazard as a major land and groundwater contaminant. Rhodococcus rhodochrous strain 11Y was isolated from explosive contaminated land and is capable of degrading RDX when provided as the sole source of nitrogen for growth. Products of RDX degradation in resting-cell incubations were analyzed and found to include nitrite, formaldehyde, and formate. No ammonium was excreted into the medium, and no dead-end metabolites were observed. The gene responsible for the degradation of RDX in strain 11Y is a constitutively expressed cytochrome P450-like gene, xpLA, which is found in a gene cluster with an adrenodoxin reductase homologue, xplB. The cytochrome P450 also has a flavodoxin domain at the N terminus. This study is the first to present a gene which has been identified as being responsible for RDX biodegradation. The mechanism of action of XplA on RDX is thought to involve initial denitration followed by spontaneous ring cleavage and mineralization

Chemical compositions comprising crystalline colloidal arrays

Crystalline colloidal arrays (CCA) which have been encapsulated in a polymer matrix to produce more robust polymerized crystalline colloidal arrays (PCCA) are provided. The PCCA\u27s of the present invention can be in the form of a hydrogel which can be compatible for use with a biological system. The polymer matrix of the PCCA is formed of polymerized poly(ethylene glycol) based monomer units which can provide a desired functionality to the PCCA. The PCCA can be formed to exhibit a photonic bandgap at a certain wavelength. The photonic bandgap can be capable of shifting upon some form of environmental stimulation rendering the PCCA suitable for many optical applications, including active photonic switching and sensory applications

Cost Shared Wildfire Risk Mitigation in Log Hill Mesa, Colorado: Survey Evidence on Participation and Willingness to Pay

Wildland–urban interface (WUI) homeowners who do not mitigate the wildfire risk on their properties impose a negative externality on society. To reduce the social costs of wildfire and incentivise homeowners to take action, cost sharing programs seek to reduce the barriers that impede wildfire risk mitigation. Using survey data from a WUI community in western Colorado and a two-stage decision framework, we examine residents’ willingness to participate in a cost sharing program for removing vegetation on their properties and the amount they are willing to contribute to the cost of that removal. Wefind that different factors motivate decisions about participation and about how much to pay. Willingness to participate correlates with both financial and non-monetary considerations, including informational barriers and wildfire risk perceptions, but not with concerns about effectiveness or visual impacts. Residents of properties with higher wildfire risk levels are less likely to participate in the cost sharing than those with lower levels of wildfire risk. We find widespread, positive willingness to pay for vegetation removal, with the amount associated negatively with property size and positively with respondent income. These results can inform the development of cost sharing programs to encourage wildfire risk mitigation on private property

Perpetrator pose reinstatement during a lineup test increases discrimination accuracy

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