Spatial Models to Account for Variation in Observer Effort in Bird Atlases

To assess the importance of variation in observer effort between and within bird atlas projects and demonstrate the use of relatively simple conditional autoregressive (CAR) models for analyzing grid-based atlas data with varying effort. Pennsylvania and West Virginia, United States of America. We used varying proportions of randomly selected training data to assess whether variations in observer effort can be accounted for using CAR models and whether such models would still be useful for atlases with incomplete data. We then evaluated whether the application of these models influenced our assessment of distribution change between two atlas projects separated by twenty years (Pennsylvania), and tested our modeling methodology on a state bird atlas with incomplete coverage (West Virginia). Conditional Autoregressive models which included observer effort and landscape covariates were able to make robust predictions of species distributions in cases of sparse data coverage. Further, we found that CAR models without landscape covariates performed favorably. These models also account for variation in observer effort between atlas projects and can have a profound effect on the overall assessment of distribution change. Accounting for variation in observer effort in atlas projects is critically important. CAR models provide a useful modeling framework for accounting for variation in observer effort in bird atlas data because they are relatively simple to apply, and quick to run

Three-dimensional in situ observations of compressive damage mechanisms in syntactic foam using X-ray microcomputed tomography

Royal Society Grant number RG140680 Lloyd's Register Foundation (GB) Oil and Gas Academy of Scotland Open access via Springer Compact AgreementPeer reviewedPublisher PD

Optical IP switching a solution to dynamic lightpath establishment in disaggregated network architectures

The landscape of the telecommunications environment is constantly evolving; in terms of architecture and increasing data-rate. Ensuring that routing decisions are taken at the lowest possible layer offers the possibility of greatest data throughput. We propose using wavelengths in a DWDM scheme as dedicated channels that bypass the routing lookup in a router. The future trend of telecommunications industry is, however, toward larger numbers of interlinked competing operator networks. This in turn means there is a lack of a unified control plane to allow current networks to dynamically provision optical paths. This paper will report on the concept of optical IP switching. This concept seeks to address optical control plane issues in disaggregated networks while providing a means to dynamically provision optical paths to cater for large data flows

Accommodations in the College Setting: The Perspectives of Students Living with Disabilities

Using a critical interpretive framework, the authors utilized semi-structured interviews to understand the experiences and perceptions of two college students living with disability concerning their use of accommodations, modifications, and adaptations in program requirements, classroom instruction, and testing. The central research questions were: “Are accommodations perceived as effective in supporting students with disabilities in their academic and social pursuits? Do students perceive that accommodations allow them maximum engagement and participation in their educational experiences?” and “To what extent are accommodations perceived by the participants as leveling the playing field for students with disabilities?” And, finally, “What do the participants perceive as the biggest obstacles to success for students with disabilities?” An understanding of the participants’ perceptions will enhance the overall awareness and appreciation for the experiences of students living with disability and will have direct implications for faculty-student interactions, student-to-student interactions as well as larger interactions within society

Choreographing Intertextual Stories: Qualitative Inquiry Meets Oral History

In Oral History for the Qualitative Researcher: Choreographing the Story (2010), Valerie J. Janesick offers readers an engaging conversational exploration of oral history methods using the metaphor of choreography. Janesick weaves together the theoretical and practical dimensions of conducting oral history projects and generously shares valuable examples throughout the text

Synthesis of empty bacterial microcompartments, directed organelle protein incorporation, and evidence of filament-associated organelle movement

Compartmentalization is an important process, since it allows the segregation of metabolic activities and, in the era of synthetic biology, represents an important tool by which defined microenvironments can be created for specific metabolic functions. Indeed, some bacteria make specialized proteinaceous metabolic compartments called bacterial microcompartments (BMCs) or metabolosomes. Here we demonstrate that the shell of the metabolosome (representing an empty BMC) can be produced within E. coil cells by the coordinated expression of genes encoding structural proteins. A plethora of diverse structures can be generated by changing the expression profile of these genes, including the formation of large axial filaments that interfere with septation. Fusing GFP to PduC, PduD, or PduV, none of which are shell proteins, allows regiospecific targeting of the reporter group to the empty BMC. Live cell imaging provides unexpected evidence of filament-associated BMC movement within the cell in the presence of Pdu

Problem-Based Learning Pedagogies in Teacher Education: The Case of Botswana

The development of primary school teachers is an important aspect of a country’s economic, social, and political well-being. The use of particular pedagogies in teacher education may greatly influence how teachers perform in their classrooms after completing their training programs. This micro-ethnography investigated the extent to which teacher educators in Botswana’s College of Education used problem-based learning (PBL) approaches in the development of preservice primary teachers. While the findings of this micro-ethnography showed that particular teacher educators rarely used problem-based learning approaches, the accompanying insights helped to bring a deeper understanding of what is needed for Botswana’s teacher education program to shift to a problem-based learning pedagogy on three levels: teaching practices, curriculum policies, and further research within a particular geopolitical context

Catching the “Tail/Tale” of Teaching Qualitative Inquiry to Novice Researchers

This article responds to the call for deeper examination of qualitative inquiry teaching practices by presenting representative examples from the pedagogies of three teacher-educators who have taught Qualitative Research Methods courses for the past 15 years. We focus in particular on the pedagogical complexities of teaching data analysis, which is a topic that remains under-theorized and under-represented in contemporary scholarship on qualitative methodologies. Using a critical friends framework, we analyze and synthesize our pedagogical responses to key dilemmas we have encountered in our respective contexts, all state universities, to introducing qualitative inquiry to novice researchers who often enter the analytic process with positivist notions of knowledge creation. They sometimes enter the analytic process with the belief if they can only “catch the tail” of this thing called qualitative research they will be able to “do it right.” Yet, as the metaphor implies, catching a fierce beast by the tail, thinking you can control its actions, can intrude on the inductive and holistic character of the qualitative inquiry process