QCGAT aircraft/engine design for reduced noise and emissions

The high bypass ratio QCGAT engine played an important role in shaping the aircraft design. The aircraft which evolved is a sleek, advanced design, six-place aircraft with 3538 kg (7,800 lb) maximum gross weight. It offers a 2778 kilometer (1500 nautical mile) range with cruise speed of 0.5 Mach number and will take-off and land on the vast majority of general aviation airfields. Advanced features include broad application of composite materials and a supercritical wing design with winglets. Full-span fowler flaps were introduced to improve landing capability. Engines are fuselage-mounted with inlets over the wing to provide shielding of fan noise by the wing surfaces. The design objectives, noise, and emission considerations, engine cycle and engine description are discussed as well as specific design features

Identifying gaps in perceived ability: Promoting exercise in young adults with disabilities

Aim: The purpose of this study was to describe the perceived ability in making health decisions regarding exercise and its congruence between young adults with disabilities and their parents. Methods: The study design used a mixed methods approach. The convenience sample consisted of (N = 10) young adults with disabilities and (N = 9) parents of young adults with disabilities. Qualitative data were gathered using a preliminary structured interview guide for young adults with disabilities consisting of several short answer questions. Quantitative data were gathered from the parents of young adults with disabilities by using Pender’s Health Promotion Questionnaire. Results: Data analysis began with simple descriptive statistics. The qualitative data, the structured interviews of the adolescents, were transcribed and evaluated for themes. The quantitative data, the parents’ questionnaires, were analyzed by aggregating data for frequencies and descriptive statistics. The qualitative data were then compared with the quantitative data to identify similarities and differences in perceptions. Conclusion: Comparison of responses among dyads provides insight about disparities that exist between what parents perceive their children with disabilities can decide about exercise and the children’s own perception about their abilities in making decisions regarding exercise

Recombination, ionization, and nonequilibrium electrical conductivity in seeded plasmas

New data are presented which provide direct experimental confirmation of the validity of a physical model which has been widely employed to predict the electrical conductivity of dense, two-temperature, seeded plasmas. Experimental measurements of electron temperature, and ionization and recombination rates are presented for partially ionized plasmas of potassium-seeded argon. Experimental conditions were chosen to cover those ranges of interest in connection with proposed magnetohydrodynamic energy conversion devices for which nonequilibrium electrical conductivity measurements have been previously reported, e.g., translational atom temperatures of about 2000°K, total atom densities near 10^(18)/cm^3, potassium densities of about 10^(16)/cm^3, electron densities from 10^(13)/cm^3 to 10^(15)/cm^3, and electron temperatures from 2200 to 3500°K. Measured values of electron-electron-ion recombination coefficients for potassium show good agreement with theoretical values based upon the Gryzinski classical inelastic-collision cross-section expressions. Observed ionization rates and relaxation characteristics appear to be adequately explained by a similar formulation for the ionization process

Facing the dragon: China policy in a new era

Recapping the dramatic Whitlam-Nixon openings to China of the 1970s—in which he participated—Ross Terrill’s new study finds themes for China policy today. Our Asia–Pacific region prospers, but the seas off China are not tranquil. American policies protect Australia, but they worry some Australians. Whitlam and Nixon cancelled decades of war in the Asia–Pacific, ushering in decades of astonishing economic growth for Australia, China and others. Can it last? Will the Chinese, who have much to lose from more war, accept give and take with Washington and Tokyo, or will the Middle Kingdom demand the middle position, squeezing its fourteen contiguous neighbours? With his dual perspective as both Australian and American citizen, Terrill examines the choices between idealism and realism, economic interests and security interests, and the benefits and risks of alliances. Looking forward, the paper assesses American staying power and the outlook for Beijing’s unprecedented mix of Leninism with consumerism, Australia’s future as a trading power, and Canberra’s ability to locate China within a wider Indo-Pacific vision that includes Indonesia, Japan, and India. Within six days in 1971, the Asia–Pacific changed as Zhou Enlai bargained with Whitlam and Nixon. Today six days of disaster on the Korean Peninsula could change our region again. But the essay hopes Washington, Beijing, and Canberra, interdependent as never before, may achieve further peace and prosperity for the Asia–Pacific. Between the poles of China and the US seeing each other as a “threat,” on one hand, and setting up a “G2”, Facing the Dragon foresees a peaceful, un-orchestrated China–US competition offering breathing room for Asia’s further progress

It's our Community, Your Life, Everyone's Responsibility

The "Mind Your Mind" community initiative is about educating everyone to develop a basic level of "mental wellness" knowledge. Building mental health (or MH) knowledge will allow us to take care of our own mental health and talk more intelligently about(and help)those who are suffering. All of which should also help address cultural stigmas,(that have grown from fears and a lack of understanding of MH. Conversely, all of us can and should take responsibility for our own mental health. Mind Your Mind offers two proven evidence-based mental health education programs customized for any public audience. Addtionally anyone can become a course instructor; the training ranges from two to five days of nationally certified instruction. The first 90-minute course is called "Being a GateKeeper" (similar to Ohio State Suicide Prevention Reach Program). Being a gatekeeper is like a neighborhood watch program, except you will learn to be aware of sighs/symptoms of concerning behavior that may indicate someone is having mental issues and could be at risk. The second and core education program is called Mental Health First Aid. This is comprehensive education for anyone and everybody (over 18 years old) and is often called the CPR course for mental health. More than one million people in the United States have taken this eight-hour course (OSU Extension has four certified trainers and is considering expanding it through county educators). Mind Your Mind would in effect partner with Extension and other organizations where appropriate. The primary goal of this initiative to provide basic mental wellness education to everyone and leverage partnerships in offering and marketing to-scale statewide.AUTHOR AFFILIATION: Steve Terrill, Volunteer Advocate, Alumni, [email protected] (Corresponding Author).Mental Health: Be it GOOD, not Bad (the bad news and the good news of our mental health today). Becoming a Gatekeeper overview. The Mental Health First Aid overview. Making it work for you and others

Price Volatility Spillover in Agricultural Markets: An Examination of U.S. Catfish Markets

Price volatility spillovers in the U.S. catfish supply chain are analyzed based on monthly price data from 1980 through 2000 for catfish feed, its ingredients, and farm- and wholesale-level catfish. The exponential generalized autoregressive conditional heteroskedasticity (EGARCH) model was used to test univariate volatility spillovers for prices in the supply chain. Strong price volatility spillover from feeding material (corn, soybeans, menhaden) to catfish feed and farm- and wholesale-level catfish prices was detected.catfish, EGARCH, vertical market chains, volatility spillover, Demand and Price Analysis,

A Comparison Of Choice Experiments And Actual Grocery Store Behavior: An Empirical Application To Seafood Products

In this paper we compare results from an in-store field experiment and a mail survey choice experiment (CE) to investigate CE’s capacity in predicting grocery store market share. For the comparison, we used three seafood products: freshwater prawns, marine shrimp, and lobster. CE estimates were obtained via four econometric models: the conditional logit, the random parameter logit, the heteroskedastic extreme value, and the multinomial probit. We found that the level of control in the grocery store experiment and the choice of econometric model influenced the capacity of CE to predict grocery store market shares.choice experiment, grocery store, hypothetical bias, Food Consumption/Nutrition/Food Safety, Marketing, C35, Q13,

Study of Evacuation Behavior of Coastal Gulf of Mexico Residents

In this study, we investigate the link between hurricane characteristics, demographics of the Coastal Gulf of Mexico residents, including their household location, and their respective evacuation behavior. Our study is significantly different from the previously made studies on hurricane evacuation behavior in two ways. At first, the research data is collected through recording responses to a series of hypothetical situations which are quite identical to the set of information that people are used to see during the hurricane season. Secondly, this study addresses and includes response heterogeneity while analyzing sample behavior, an issue which has not been addressed in previous research on hurricane evacuation behavior in spite of its importance.Evacuation Behavior, Hurricane, Response Heterogeneity, Environmental Economics and Policy, Research Methods/ Statistical Methods, Risk and Uncertainty, C35, Q54,

Nonequilibrium electrical conductivity measurements in argon and helium seeded plasmas

In a previous paper, the authors presented experimental values of electrical conductivity measured in a plasma composed of argon gas seeded with potassium vapor. The measurements were made at atmospheric pressure with a neutral gas temperature of 2000° ± 100°K and with a number of values of seed concentration in the range 0.2 to 0.8 mole %. The effect of nonequilibrium heating of the electron gas-excited potassium system was investigated for a range of current densities between 0.8 and 80 amp/cm^2. These data were in good agreement with values of the conductivity calculated by a scheme, outlined in Ref. 1, which included the effects of energy loss from the system, composed of the electron gas and the electronically excited states of potassium due to radiation from the excited potassium atoms. In addition, the pulsed technique used to measure the conductivity in response to a step function application of the electric field made possible the determination of the relaxation times for the ionization process