A comparison of the results of dynamic wind-tunnel tests with theoretical predictions for an aeromechanical gust-alleviation system for light airplanes

Dynamic wind tunnel tests have been conducted on a 1/6-scale model of a general aviation airplane equipped with an all-mechanical gust alleviation system which uses auxiliary aerodynamic surfaces to drive the flaps. The longitudinal short period motions were studied under simulated gust conditions in order to verify the mathematical model used in a previous study to predict the performance of the full scale system and determine the amount of normal acceleration alleviation which could be attained. The model responses were measured for different configurations with the system active and without the system active for comparison. The tests confirmed the general relationships between the experimental variables and the model responses predicted by the mathematical model, but there were significant differences in the magnitudes of the responses. The experimental results for the model were used to estimate a reduction of 30 percent in the rms normal acceleration response of a similar full scale airplane in atmospheric turbulence

Evaluation of a wind-tunnel gust response technique including correlations with analytical and flight test results

A wind tunnel technique for obtaining gust frequency response functions for use in predicting the response of flexible aircraft to atmospheric turbulence is evaluated. The tunnel test results for a dynamically scaled cable supported aeroelastic model are compared with analytical and flight data. The wind tunnel technique, which employs oscillating vanes in the tunnel throat section to generate a sinusoidally varying flow field around the model, was evaluated by use of a 1/30 scale model of the B-52E airplane. Correlation between the wind tunnel results, flight test results, and analytical predictions for response in the short period and wing first elastic modes of motion are presented

Exploring Social Justice Issues Through Design in an Apparel Design Studio Course

Boden (2004) explained that one way to be creative is to make “unfamiliar combinations of familiar ideas\u27(p. 2). One familiar concept at a public institution set in an urban environment in the United States is social justice. The goal of this teaching technique was to engage students with social justice issues throughout the design process in an apparel design studio setting. This project was designed to infuse and encourage engagement with an important topic in a non-traditional fashion. The instructor defined social justice and equity, and then provided several examples of inequalities present in our society. Students were required to identify a social injustice and research the topic by examining news, journals, or other outlets. Students were encouraged to utilize visual representation in the design or utilize emotions associated with the injustice in the construction and elements throughout the design process and execution. Students utilized a variety of social justice inspiration sources such as racial inequity, sexism, colorism, classism, and abelism. During presentations, students exhibited strong emotion and connection to their results

Computer Programs for Calculating and Plotting the Stability Characteristics of a Balloon Tethered in a Wind

Computer programs for calculating the stability characteristics of a balloon tethered in a steady wind are presented. Equilibrium conditions, characteristic roots, and modal ratios are calculated for a range of discrete values of velocity for a fixed tether-line length. Separate programs are used: (1) to calculate longitudinal stability characteristics, (2) to calculate lateral stability characteristics, (3) to plot the characteristic roots versus velocity, (4) to plot the characteristic roots in root-locus form, (5) to plot the longitudinal modes of motion, and (6) to plot the lateral modes for motion. The basic equations, program listings, and the input and output data for sample cases are presented, with a brief discussion of the overall operation and limitations. The programs are based on a linearized, stability-derivative type of analysis, including balloon aerodynamics, apparent mass, buoyancy effects, and static forces which result from the tether line

Multiplex DNA Typing of Short-Tandem-Repeat Loci on the Y Chromosome

This is the published version. Copyright 1997 de Gruyter.To facilitate evolutionary and forensic studies of DNA polymorphisms on the Y chromosome, we devised a multiplex amplification procedure for short-tandemrepeat (STR) loci. Four tetranucleotide STR loci (DYS19, DYS390, DYS391, and DYS393) were simultaneously amplified with FAM-labeled primers and genotypes were determined with an automated DNA sequencer. We typed 162 males from three U.S. populations (African-Americans, European-Americans and Hispanics) and found that the haplotype diversities range from 0.920 to 0.969. This quadruplex system provides a facile means of genotyping these Y chromosome STRs, and should be useful in population genetic and forensic applications

First-generation college students and class consciousness : exploring how social class influences college adjustment

First-generation college students (FGCS), defined as students whose parents have not obtained a bachelor’s degree, is a new identity constructed primarily over the past decade. Utilizing the umbrella term of FGCS is problematic as it places a heavy concentration on parental education and lack of cultural capital, ignoring how current class experiences in the context of other identities, such as race and gender, shape adjustment to college. The purpose of this quantitative study was twofold: (a) to examine whether class consciousness affects first-generation students’ adjustment to elite, non-profit private undergraduate institutions, and (b) to examine how the intersectionality of race, class and gender moderate this relationship. The sample included 46 FGCS (68.3% female, 45% students of color, 48.3% low SES) who were completing their degrees at elite private colleges and universities. Findings include a positive correlation between the class consciousness scales for class performativity and access and opportunities with both institutional attachment and social adjustment and a hierarchical regression illustrating that class performativity is a better predictor of adjustment to college than prior access and opportunities to accrue dominant cultural capital. Unfortunately, a large enough sample size was not able to be collected to assess for the main effects of race, class, and gender. These findings challenge the importance institutions have placed on generational status for these students and suggest that further concentration should be placed on class identity development and current class experiences for FGCS at elite private undergraduate institutions

Integrating Viral Hepatitis Screening and Prevention Services into an Urban Chemical Dependency Treatment Facility for American Indians and Alaska Natives

American Indian/Alaska Natives (AI/AN) patients at an urban residential chemical dependency treatment center participated in a viral hepatitis prevention project. Project activities integrated into patients’ treatment programs included viral hepatitis and human immunodeficiency virus (HIV) risk factor screening, education and counseling, laboratory testing, and hepatitis A and B vaccination. Of 928 AI/AN admissions, 585 (63%) completed risk factor screening assessment. Of these, 436 (75%) received at least one vaccination, viral hepatitis testing, or both. Of 322 patients tested, 91 (28%) were hepatitis C virus (HCV) antibody positive. Lack of pre-existing immunity to vaccine-preventable viral hepatitis infection was common: 132 (45%) were susceptible to hepatitis A and 224 (70%) were susceptible to hepatitis B infection. Chemical dependency treatment centers serving urban AI/AN provide important opportunities for implementing viral hepatitis prevention programs for high-risk populations and for improving ongoing efforts to reduce the disparate impact of chronic liver disease in AI/ AN people

The Effectiveness of Commercially Available Double-Crested Cormorant (\u3ci\u3eNannopterum auritus\u3c/i\u3e) Deterrent Methods in Reducing Loafing Time on Floating Oyster Cages

The Wildlife Services—National Wildlife Research Center Mississippi Field Station, working in conjunction with Mississippi State University, conducted a study to evaluate the effectiveness of several non-lethal, commercial, physical bird deterrents. Deterrents were available on the open market to reduce double-crested cormorant (Nannopterum auritus) (DCCO) roosting time on floating oyster cages. We hypothesized that reducing bird loafing time on floating oyster cages would reduce the potential for bird defecation. Double-crested cormorant defecation can increase coliform counts in both the water and oysters, which could result in oyster farm closure. Shellfish farms often differ from one another due to environmental factors and farm locations. Six deterrent devices were selected as options for farmers, and the amount of time DCCOs occupied floats with deterrents was compared to the time they occupied those without deterrents (i.e. on a control pond). All deterrents except the Scarem Kite significantly reduced or halted DCCO use of floats compared to the control. Of note, the Scarem Kite is the only deterrent that requires consistent wind to operate effectively. The research facility is open-air, but we did not have sufficient wind for proper Scarem Kite function. Thus, it is possible that all deterrents would have produced significant reductions in DCCO use. Our results are encouraging and show that minimal deterrent applications to oyster cage floats can help farms achieve their operational plans’ goals and reduce the potential for pathogen transfer by birds. The data presented here should be considered a starting point for developing an efficient deterrent plan that meets state and federal standards

Family tree and or map-like approaches to Slavic languages?

The file consists of the presenters' raw notes and the PowerPoint presentation delivered at the "Slavic Languages: Time and Contingency” conference, UC Berkeley 12–13 Feb. 2010.Lexicostatistics is decades old, but newer techniques for computational approaches to historical linguistics have gained new attention with the rise of more sophisticated methods of data handling. Thus, for example, Gray and Atkinson (2003) claim to have established, using lexicostatistics and a Bayesian (MCMC) model, an authoritative Stammbaum for the Indo-European language family, including absolute chronologies of its branching. Others have argued that such methods, while valid for biology, cannot yield authoritative dates for language data (Atkinson 2009: 128). The present paper examines a smaller subset of languages—Slavic—using new lexicostatistical methods in attempt to compare the computational results with received analyses that are closer to the present. We assume that examining a group of languages closer in time to the present, where the splits are more easily verifiable, allows testing of quantifiable methods. If a close fit can be found between a lexicostatistical approach and traditional analysis in Slavic, it should allow extension to greater time depths and larger families such as Indo-European. The present paper applies several methods to two corpora, one the Slavic subset of Indo-European in Dyen, Kruskal and Black (1992) and the Slavic text-token set in Mańczak 2004. References Atkinson, Quentin D. 2009. Review of Language Classification by Numbers. By April McMahon and Robert McMahon. Oxford: Oxford University Press, 2005. Pp xvii, 265. Diachonica 26/1: 125–133. Dyen, Isidore, Joseph B. Kruskal, and Paul Black. 1992. An Indoeuropean Classification: A Lexicostatistical Experiment. Philadelphia: American Philosophical Society. Gray, Russell D. and Quentin D. Atkinson. 2003. Language-Tree Divergence Times Support the Anatolian Theory of Indo-European Origin. Nature 426: 435–439. Mańczak, Witold. 2004. Przedhistoryczne migracje słowian i pochodzenie języka staro-cerkiewno-słowianskiego. Cracow: PAU

Report 14: Online community involvement in COVID-19 research & outbreak response: early insights from a UK perspective

The Patient Experience Research Centre (PERC) at Imperial College London is developing research to explore and understand people’s views about, experiences of and behavioural responses to the outbreak in the UK and elsewhere. To guide that effort and to help inform COVID-19 research and responses more broadly - for example in mathematical modelling and policy - PERC launched an online community involvement initiative that sought rapid, early insight from members of the public and aimed to establish a network for ongoing community engagement. Priority areas for COVID-19 research Vaccine development was considered the most urgent research priority for many respondents. Social studies exploring the public’s experiences, risk perceptions and behaviours during this outbreak were necessary and important according to 95% of the respondents. Such research could: Improve the way the current outbreak response is planned and implemented; Improve the way information and guidance is provided to and understood by the public; Optimise the support provided to communities and vulnerable groups; and Improve future outbreak preparedness. Other recommended areas of research included: Understanding the role of the media in influencing how people react and respond; Furthering our basic understanding of the virus – how it spreads, who it affects the most and why, and whether people achieve and maintain immunity after being infected; Critiquing the UK’s response to the pandemic against that of other countries; and Ensuring lessons can be learnt from this outbreak to better equip us for future outbreaks, and public health emergencies in general. Key unmet needs amongst communities The main challenges described by respondents were ineffective communication, including access to information and information overload; and conflicting guidance and misinformation. Respondents’ described feelings of concern, confusion and, in some cases, panic as a result of these communication and information challenges. Others shared their frustration that there was nowhere to post their concerns or questions. In addition, respondents expressed a need for more detailed and bespoke practical guidance about their risk and how best to prepare and protect themselves and their loved ones. Almost half (47%) wanted to hear about the latest research on the virus, and 45% wanted a dedicated internet portal where they could access the latest information and trusted guidance. Making information more accessible to different communities, including those who are not online and those who have English as a second language was also highlighted as a priority