Student Ensemble: Symphonic Winds

Center for the Performing ArtsMarch 23, 2016Wednesday Evening8:00 p.m

Excitonic mobility edge and ultra-short photoluminescence decay time in n-type GaAsN

We use time-resolved photoluminescence (PL) spectroscopy to study the recombination dynamics in Si-doped GaAsN semiconductor alloys with a nitrogen content up to 0.2%. The PL decay is predominantly monoexponential and exhibits a strong energy dispersion. We find ultra-short decay times on the high-energy side and long decay times on the low-energy side of the photoluminescence spectrum. This asymmetry can be explained by the existence of an additional non-radiative energy transfer channel and is consistent with previous studies on intrinsic GaAsN epilayers. However, the determined maximum decay times of GaAsN:Si are significantly reduced in comparison to undoped GaAsN. The determined excitonic mobility edge energy constantly decreases with an increase in the N content, in agreement with the two-level band anticrossing model

Student Ensemble: Wind Symphony

Center for the Performing ArtsSunday AfternoonSeptember 13, 20153:00 p.m

Proceedings of the 10th Annual Meeting, Southern Soybean Disease Workers (March 15-17, 1983, Houston, Texas): Significance of Soybean Diseases

Contents 1983 Southern Soybean Disease Workers Officers 1983 Southern Soybean Disease Workers Program Committee Committee Chairmen General session Presidentiial address. W Winner Soybean Research Needs and the American Soybean Association. KJ Smith American Soybean Association Pesticide Assessment in the Administrative Hearing: An Educational Guide for the Agricultural Scientist. MT Olexa and AH Daniels Soybean Disease Loss Estimate. E Koldenhoven The influence of cultural practices on disease incidence. JG Kantzes presiding The Relationship Between Chloride Uptake and Leaf Scorch of Soybeans. MB Parker, TP Gaines, and GJ Gascho Effect of No-tillage on Fusarium Blight of Soybean on Delmarva. B Carroll Effect of No-tillage on Severity of Losses from Soybean Cyst Nematode and Foliar Diseases. AY Chambers and TC McCutchen Soybean nematodes. WS Hough presiding Standardized Nematicide Research Report. A Wrather Research on the Effects of Ectoparasitic Nematodes on Soybean Yields. EC McGawley Relationship of Numbers of the Soybean Cyst Nematode and Soybean Crop Response in North Carolina. D Schmitt Level of Resistance to Cyst Nematodes in Derived Lines of Soybeans. SC Anand and CR Shumway Reduction of Soybean Cyst Nematodes Females by Furadan. AJ Howard Effect of Trifluralin (Treflan) on Soybean Cyst Nematode. RD Riggs and LR Oliver Graduate student presentations. D Schmitt presiding Effect of Three Densities of Three Meloidogyne spp. on Soybean Growth in North Florida. CH Opperman The Effects of Pratylenchus brachyurus on Yield Components of Soybeans. FR Koenning Pod and Stem Infection by Phomopsis sp. during Soybean Seed Development and Maturation. JR Hicks, LJ Tomes, and DM TeKrony New developments. G Rich, presiding Label Amendments for Furadan in Soybeans. WS Hough Summary of Super Tin 41 for Performance on Soybeans for Foliar Disease Control. EF Koldenhoven Sudden Death Syndrome of Soybean: A Disease of Unknown Etiology. M Hirrel Soybean, seed, seedling and soil-borne diseases. J Shriver presiding Standardized Seed Treatment Research Report. MC McDaniel Factors Affecting Survival and Density of Macrophomina in Soil. T Wyllie Epidemiology and Control of Soybean Seed Diseases. D McGee Evaluation for Resistance to Seed Diseases. JP Ross Foliar, pod and stem diseases of soybeans. Mel Newman presiding Summary of Regional Foliar Fungicide Treatments. AY Chambers and MA Newman Disease Awareness Research Report and Data from Compromise Point System. R Smith The Effect of Triphenyltin Hydroxide on Disease and Insect Control of Soybeans. G Whitney Stem Canker in Tennessee: The Influence of Varieties, Foliar Sprays and Planting Dates. AY Chambers Stem Canker in Alabama: The Effect of Varieties and Foliar Sprays. P Backman, M Crawford, and W Gazaway Stem Canker in Mississippi: Varietal Response and Isolate Variation. B Moore Isolation and Identification Techniques for Diaporthe phaseolorum var. caulivora. MA Crawford and PA Backman Treasurer\u27s report. D Smit

Pluripotent stem cells in neurodegenerative and neurodevelopmental diseases.

Most of our current knowledge about cellular phenotypes in neurodevelopmental and neurodegenerative diseases in humans was gathered from studies in postmortem brain tissues. These samples often represent the end-stage of the disease and therefore are not always a fair representation of how the disease developed. Moreover, under these circumstances, the pathology observed could be a secondary effect rather than the authentic disease cellular phenotype. Likewise, the rodent models available do not always recapitulate the pathology from human diseases. In this review, we will examine recent literature on the use of induced pluripotent stem cells to model neurodegenerative and neurodevelopmental diseases. We highlight the characteristics of diseases like spinal muscular atrophy and familial dysautonomia that allowed partial modeling of the disease phenotype. We review human stem cell literature on common neurodegenerative late-onset diseases such as Parkinson's disease and amyotrophic lateral sclerosis where patients' cells have been successfully reprogrammed but a disease phenotype has not yet been described. So far, the technique is of great interest for early onset monogenetic neurodevelopmental diseases. We speculate about potential further experimental requirements and settings for reprogrammed neurons for in vitro disease modeling and drug discovery

Complex ecologies of trust in data practices and data-driven systems

Trust in data practices and data-driven systems is widely seen as both important and elusive. A data trust deficit has been identified, to which proposed solutions are often localised or individualised, focusing either on what institutions can do to increase user trust in their data practices or on data management models that empower the individual user. Scholarship on trust often focuses on typologies of trust. This paper shifts the emphasis to those doing the trusting, by presenting findings from empirical research which explored user perspectives on the data practices of the BBC. These findings challenge the assumption that localised or individualised solutions can be effective. They also suggest that conceptualisations of trust in data practices need to account for the complex range of factors which come into play in relation to trust in data and so move beyond the production of typologies. In this paper, we propose the concept of ‘complex ecologies of trust’ as a way of addressing all of these issues

Nurturing the young shoots of talent: Using action research for exploration and theory building

This is an Author's Accepted Manuscript of an article published in European Early Childhood Education Research Journal, 19(4), 433-450, 2011, copyright Taylor & Francis, available online at: http://www.tandfonline.com/10.1080/1350293X.2011.623515.This paper reports the outcomes of a set of action research projects carried out by teacher researchers in 14 local education authorities in England, working collaboratively with university tutors, over a period of three years. The common aim of all the projects was to explore practical ways of nurturing the gifts and talents of children aged four–seven years. The project was funded by the Department of Education and Skills in England as part of the government's gifted and talented programme. The project teachers felt that their understanding of issues relating to nurturing the gifts and talents of younger children was enhanced through their engagement in the project. It was possible to map the findings of the projects to the English government's National Quality Standards for gifted and talented education which include: (1) identification; (2) effective provision in the classroom; (3) enabling curriculum entitlement and choice; (4) assessment for learning; (5) engaging with community, families and beyond. The findings are also analysed within the framework of good practice in educating children in the first years of schooling. Participating practitioners felt that action research offered them a suitable methodology to explore the complexity of the topic of giftedness through cycles of planning, action and reflection and personal theory building

Frankenstein’s problem

This text is based on an invited address presented at IFIP 8.2 ‘Living with Monsters’ in San Francisco, CA, 11 December 2018. Taking the 200th anniversary of Mary Wollstonecraft Shelley’s Frankenstein as a starting place, I explore questions of autonomy and control with respect to human/technology relations. I consider the ambivalence of these agencies, and recent initiatives in science and technology studies and related fields to reconceptualize the problem as matters of relation and care. While embracing this turn, I reflect as well upon the ambivalences of relation and care, and the need to address the resilient politics of alterity in our figurations (and celebrations) of the monstrous

The golden circle: A way of arguing and acting about technology in the London ambulance service

This paper analyses the way in which the London Ambulance Service recovered from the events of October 1992, when it implemented a computer-aided despatch system (LASCAD) that remained in service for less than two weeks. It examines the enactment of a programme of long-term organizational change, focusing on the implementation of an alternative computer system in 1996. The analysis in this paper is informed by actor-network theory, both by an early statement of this approach developed by Callon in the sociology of translation, and also by concepts and ideas from Latour’s more recent restatement of his own position. The paper examines how alternative interests emerged and were stabilized over time, in a way of arguing and acting among key players in the change programme, christened the Golden Circle. The story traces four years in the history of the London Ambulance Service, from the aftermath of October 1992 through the birth of the Golden Circle to the achievement of National Health Service (NHS) trust status. LASCAD was the beginning of the story, this is the middle, an end lies in the future, when the remaining elements of the change programme are enacted beyond the Golden Circle

The moral-IT deck:A tool for ethics by design

This paper presents the design process and empirical evaluation of a new tool for enabling ethics by design: The Moral-IT Cards. Better tools are needed to support the role of technologists in addressing ethical issues during system design. These physical cards support reflection by technologists on normative aspects of technology development, specifically on emerging risks, appropriate safeguards and challenges of implementing these in the system. We discuss how the cards were developed and tested within 5 workshops with 20 participants from both research and commercial settings. We consider the role of technologists in ethics from different EU/UK policymaking initiatives and disciplinary perspectives (i.e. Science and Technology Studies (STS), IT Law, Human Computer Interaction (HCI), Computer/Engineering Ethics). We then examine existing ethics by design tools, and other cards based tools before arguing why cards can be a useful medium for addressing complex ethical issues. We present the development process for the Moral-IT cards, document key features of our card design, background on the content, the impact assessment board process for using them and how this was formulated. We discuss our study design and methodology before examining key findings which are clustered around three overarching themes. These are: the value of our cards as a tool, their impact on the technology design process and how they structure ethical reflection practices. We conclude with key lessons and concepts such as how they level the playing field for debate; enable ethical clustering, sorting and comparison; provide appropriate anchors for discussion and highlighted the intertwined nature of ethics.Comment: Governance and Regulation; Design Tools; Responsible Research and Innovation; Ethics by Design; Games; Human Computer Interaction, Card Based Tool