Too Much White Space: Diversity In Graphic Design

Too Much White Space: Diversity In Graphic Design, is a community-based project that focuses on inspiring future black generations to become graphic designers. This project aims to respond to the AIGA article called Where are the Black designers?, by Maurice Cherry. In his article, he asks tough questions about the lack of racial diversity in design. He explains why the lack of diversity is a problem and how it hurts the design field. Researching this topic in-depth will help me find ways to get more minorities involved in graphic design. One day in my design career, I would like to expand this project and see if I can make an impact to raise the percentage of minorities in design

A Future with Fusion

The world's energy resources are facing depletion. The resources which are presently used in energy production are nonrenewable and therefore, are increasing in price as they become more scarce. As a result of the increasing expense, these materials are becoming economically less attractive. This necessitates a change in technology which will enable energy production from alternative resources. Nuclear fusion is currently undergoing research as a possible solution to the world's growing demand for electricity. In order to determine if fusion power is feasible, the economic efficiency as well as the technical efficiency must be compared with that of conventional resources. This comparison will involve such factors as spillover costs, construction and fuel costs, thermal efficiencies and availability

The case of Jamie: examining storylines and positions over time in a secondary mathematics classroom

This study utilizes Positioning Theory as a lens to analyze interactions between a teacher and her students. Using those interactions, this study seeks to better catalog and understand pervasive storylines in one teacher’s secondary mathematics classroom as well as the intertwined positions of teacher and students within those storylines. Additionally, this study amplifies the voice and lens of a teacher participant to showcase the perceived relationship between her reflexive and interactive positioning of herself and students during episodes of interaction. This single case study investigates one teacher’s classroom practice over four years as she engaged in professional development and learning around high-quality, core instructional practices for teaching mathematics. Video recordings of classroom lessons and video-stimulated recall interviews were analyzed to illuminate referenced storylines about the meanings made of teaching and learning mathematics in this space and the positions assumed and afforded within. This single case study provides unique insight into the evolution and evolvement of storylines and positions over time for this particular teacher while also honoring the relational and negotiable nature of positioning. Findings supported storyline development along three trajectories including those storylines and positions that remained consistent, others that dissipated, and still others that emerged over time. Additionally, findings suggest that professional development focused on pedagogical practice and student-centered instruction may support teachers in assuming more subdued, less powerful positions during classroom interactions and thus, affording students more agentic, authoritative, and sense-making positions throughout inquiry driven mathematics lessons. Finally, findings suggest that as teachers shift to consider their assumed positioning in interactions, they have the ability to suggest, offer, and restrict particular positions for students. Implications for practice and research are discussed for teachers, teacher educators, professional development facilitators, and researchers

Three stories

These stories are autobiographical in that they are attempts on my part to introspect and find and state what I consider to be the truth concerning certain of my personal attitudes toward existence. Charlie, the central character of all three stories, is an autobiographical extension, or probe, which I use to explore depths which are no longer open to me personally. The language of these stories is as close to that of the people with whom I was raised as I can manage. My object in this pursuit is obviously verisimilitude, but there is another factor involved which is of greater significance; these stories are actually not stories per se; they are yarns: something to be told aloud. These yarns are all part of a larger work which I intend to call, the Charlie Ledger, in which I record the profits and losses of his days

Comparisons of arthropod and avian communities in insecticide-treated and untreated hemlock stands in Great Smoky Mountains National Park

Great Smoky Mountains National Park is using systemic imidacloprid in Hemlock Conservation Areas to treat eastern hemlocks (Tsuga canadensis) infested with hemlock woolly adelgid (Adelges tsugae, HWA). The purpose of this study was to investigate the effects of systemic imidacloprid treatments on the insectivorous bird community and on the hemlock canopy arthropod community in the context of food availability for insectivores. Territory mapping of three hemlock-associated Neotropical migratory foliage-gleaning bird species was conducted in six pairs of treated and untreated hemlock study sites. Relationships between bird territory density and hemlock foliar density were also examined. Canopy arthropods were sampled in these paired sites by clipping mid-canopy hemlock branches. Arthropods were identified to order except Hemiptera to suborder. Arthropods were further categorized into focal bird prey guilds and non-target herbivorous insect guilds. Focal bird densities did not differ between treated and untreated sites but were positively related to branch foliage mass, implying a preference in these birds for well-foliated hemlocks. There was no difference in HWA infestation between treated and untreated sites, indicating that treated hemlock trees were not sampled at peak efficacy of imidacloprid treatments. Over 900 non-HWA arthropods from 16 orders were collected. There were no differences in richness, abundance, composition, or density between treated and untreated sites for total arthropods or for the two focal bird prey guilds arthropods = 3 mm and larvae = 3 mm, revealing little impact on the overall arthropod crop from imidacloprid treatments. However, non-target herbivorous Hemiptera and larval Lepidoptera were significantly reduced in treated hemlocks. Although larval Lepidoptera are primary prey for focal birds, lack of differences in bird densities suggests the birds are finding other food resources in these mixed hemlock-deciduous stands. Results of this study indicate that controlling HWA-induced defoliation through use of imidacloprid may in the short term benefit hemlock-associated birds. However, while imidacloprid treatments did not appear to affect most non-target arthropods, guilds of non-target herbivorous insects should be monitored for long-term declines

Nationwide Insecticide Susceptibility Screening Against Six Active Ingredients

Presented for World Environmental Health Day, September 26, 2016 in Greenville, North Carolina.Mosquitoes may develop resistance to insecticide active ingredients after repeated exposures. Thus, it is crucial that mosquito populations be tested for resistance to confirm efficacy of control, inform management decisions, and protect public and environmental health. Nationwide Insecticide Susceptibility Screening Against Six Active Ingredients Objectives 1) Determine a baseline of resistance for six active ingredients commonly used in mosquito control in the United States. 2) Assess the extent to which resistance differs between active ingredients and mosquito genera.This study was funded by Bayer Crop Science

Gain, Loss and Divergence in Primate Zinc-Finger Genes: A Rich Resource for Evolution of Gene Regulatory Differences between Species

The molecular changes underlying major phenotypic differences between humans and other primates are not well understood, but alterations in gene regulation are likely to play a major role. Here we performed a thorough evolutionary analysis of the largest family of primate transcription factors, the Krüppel-type zinc finger (KZNF) gene family. We identified and curated gene and pseudogene models for KZNFs in three primate species, chimpanzee, orangutan and rhesus macaque, to allow for a comparison with the curated set of human KZNFs. We show that the recent evolutionary history of primate KZNFs has been complex, including many lineage-specific duplications and deletions. We found 213 species-specific KZNFs, among them 7 human-specific and 23 chimpanzee-specific genes. Two human-specific genes were validated experimentally. Ten genes have been lost in humans and 13 in chimpanzees, either through deletion or pseudogenization. We also identified 30 KZNF orthologs with human-specific and 42 with chimpanzee-specific sequence changes that are predicted to affect DNA binding properties of the proteins. Eleven of these genes show signatures of accelerated evolution, suggesting positive selection between humans and chimpanzees. During primate evolution the most extensive re-shaping of the KZNF repertoire, including most gene additions, pseudogenizations, and structural changes occurred within the subfamily homininae. Using zinc finger (ZNF) binding predictions, we suggest potential impact these changes have had on human gene regulatory networks. The large species differences in this family of TFs stands in stark contrast to the overall high conservation of primate genomes and potentially represents a potent driver of primate evolution

Measurement of the Forward-Backward Asymmetry in the B -> K(*) mu+ mu- Decay and First Observation of the Bs -> phi mu+ mu- Decay

We reconstruct the rare decays $B^+ \to K^+\mu^+\mu^-$, $B^0 \to K^{*}(892)^0\mu^+\mu^-$, and $B^0_s \to \phi(1020)\mu^+\mu^-$ in a data sample corresponding to $4.4 {\rm fb^{-1}}$ collected in $p\bar{p}$ collisions at $\sqrt{s}=1.96 {\rm TeV}$ by the CDF II detector at the Fermilab Tevatron Collider. Using $121 \pm 16$ $B^+ \to K^+\mu^+\mu^-$ and $101 \pm 12$ $B^0 \to K^{*0}\mu^+\mu^-$ decays we report the branching ratios. In addition, we report the measurement of the differential branching ratio and the muon forward-backward asymmetry in the $B^+$ and $B^0$ decay modes, and the $K^{*0}$ longitudinal polarization in the $B^0$ decay mode with respect to the squared dimuon mass. These are consistent with the theoretical prediction from the standard model, and most recent determinations from other experiments and of comparable accuracy. We also report the first observation of the $B^0_s \to \phi\mu^+\mu^- decay and measure its branching ratio${\mathcal{B}}(B^0_s \to \phi\mu^+\mu^-) = [1.44 \pm 0.33 \pm 0.46] \times 10^{-6}$using$27 \pm 6$signal events. This is currently the most rare$B^0_s$ decay observed.Comment: 7 pages, 2 figures, 3 tables. Submitted to Phys. Rev. Let

Search for a New Heavy Gauge Boson Wprime with Electron + missing ET Event Signature in ppbar collisions at sqrt(s)=1.96 TeV

We present a search for a new heavy charged vector boson $W^\prime$ decaying to an electron-neutrino pair in $p\bar{p}$ collisions at a center-of-mass energy of 1.96\unit{TeV}. The data were collected with the CDF II detector and correspond to an integrated luminosity of 5.3\unit{fb}^{-1}. No significant excess above the standard model expectation is observed and we set upper limits on $\sigma\cdot{\cal B}(W^\prime\to e\nu)$. Assuming standard model couplings to fermions and the neutrino from the $W^\prime$ boson decay to be light, we exclude a $W^\prime$ boson with mass less than 1.12\unit{TeV/}c^2 at the 95\unit{%} confidence level.Comment: 7 pages, 2 figures Submitted to PR

Measurements of the properties of Lambda_c(2595), Lambda_c(2625), Sigma_c(2455), and Sigma_c(2520) baryons

We report measurements of the resonance properties of Lambda_c(2595)+ and Lambda_c(2625)+ baryons in their decays to Lambda_c+ pi+ pi- as well as Sigma_c(2455)++,0 and Sigma_c(2520)++,0 baryons in their decays to Lambda_c+ pi+/- final states. These measurements are performed using data corresponding to 5.2/fb of integrated luminosity from ppbar collisions at sqrt(s) = 1.96 TeV, collected with the CDF II detector at the Fermilab Tevatron. Exploiting the largest available charmed baryon sample, we measure masses and decay widths with uncertainties comparable to the world averages for Sigma_c states, and significantly smaller uncertainties than the world averages for excited Lambda_c+ states.Comment: added one reference and one table, changed order of figures, 17 pages, 15 figure