Comparison of blade loads of fixed and free yawing wind turbine

The self regulating composite bearingless wind turbine utilizes an automatic pitch control concept and a completely unrestrained yawing degree of freedom. Aerodynamic moments caused by skewed flow provide the control to align the wind turbine with the wind. Model tests demonstrated the feasibility of the concept and analytical studies showed the free system to experience lower blade loads compared to the fixed system

Alien Registration- Cheney, Walter L. (Monticello, Aroostook County)

https://digitalmaine.com/alien_docs/33927/thumbnail.jp

Leadership

As Director of Community Engagement for Molina Healthcare of Ohio, Cheney leads the development of strategic partnerships, major events and sponsorships to retain and grow its membership. Cheney has received the Business First of Columbus 40 Under Forty Award; the Smart Business Magazine Breakthrough Business Leader Award; the Women Presidents’ Organization Women Empowering Women Award; the National Council of Negro Women Columbus Chapter Community Leadership Award; and was recognized by Women for Economic & Leadership Development (WELD) as a Woman You Should Know honoree.https://digitalcommons.otterbein.edu/leadhour/1027/thumbnail.jp

How Coaching Changes Teaching Practices In Elementary Literacy Instruction

Professional development is a major initiative in many school districts in an effort to help teachers improve teaching and learning. Literacy coaches are becoming increasingly prevalent in many elementary school buildings. This study examined the effects literacy coaches have on teaching practices. More specifically, it examined to what degree literacy coaches affect teaching. Utilizing an electronic survey, 18 elementary classroom teachers participated in providing feedback relative to their enjoyment, new learning, changes in practice, and subsequent changes in student learning that occurred as a result of literacy coaching. Teachers indicated new learning was occurring despite how many years they had been teaching. Teachers who were newer to the profession, fewer than 10 years’ experience, indicated high levels of enjoyment and changes to their practice and noted positive changes in student learning. Teachers with more experience indicated lower levels of enjoyment, but some still reported they noticed a change in their teaching practices for the short term at least. This study has substantial implications for the value of literacy instructional coaches and identifies particular coaching moves that teachers identified as useful. This study supports the work being done in schools and the investment being made in literacy coaching. The argument for providing job-embedded professional development is strong in this study

Investigation of a bearingless helicopter rotor concept having a composite primary structure

Experimental and analytical investigations were conducted to evaluate a bearingless helicopter rotor concept (CBR) made possible through the use of the specialized nonisotropic properties of composite materials. The investigation was focused on four principal areas which were expected to answer important questions regarding the feasibility of this concept. First, an examination of material properties was made to establish moduli, ultimate strength, and fatigue characteristics of unidirectional graphite/epoxy, the composite material selected for this application. The results confirmed the high bending modulus and strengths and low shear modulus expected of this material, and demonstrated fatigue properties in torsion which make this material ideally suited for the CBR application. Second, a dynamically scaled model was fabricated and tested in the low speed wind tunnel to explore the aeroelastic characteristics of the CBR and to explore various concepts relative to the method of blade pitch control. Two basic control configurations were tested, one in which pitch flap coupling could occur and another which eliminated all coupling. It was found that both systems could be operated successfully at simulated speeds of 180 knots; however, the configuration with coupling present revealed a potential for undesirable aeroelastic response. The uncoupled configuration behaved generally as a conventional hingeless rotor and was stable for all conditions tested

Cowbane, Oxypolis occidentalis, A New Native Vascular Plant Species for the Queen Charlotte Islands, British Columbia

We report the recent discovery of Oxypolis occidentalis, a species that is new to both British Columbia and Canada, disjunct on the Queen Charlotte Islands

Prevalence of Salmonella, Toxoplasma, Yersinia, Hepatitis E and Porcine Reproductive and Respiratory Syndrome virus in UK pigs at slaughter

In 2006/7 the prevalence of Salmonella in UK slaughter pigs was found to be amongst the highest in Europe. In advance of the anticipated EU-wide National Control Programme for Salmonella in pigs, a UK-wide monitoring programme was set up by Defra and funded in collaboration with key Government and industry partners. The monitoring programme presented a cost-effective opportunity to concurrently collect data on other potentially zoonotic pathogens for which prevalence data is currently limited, including Toxoplasma, Yersinia, Hepatitis E virus (HEV) and Porcine Reproductive and Respiratory Syndrome virus (PRRSv). Antimicrobial resistance testing of Campylobacter coli isolates and testing for ESBL E. coli was also undertaken (details not reported here)

A review of wildland fire spread modelling, 1990-present 2: Empirical and quasi-empirical models

In recent years, advances in computational power and spatial data analysis (GIS, remote sensing, etc) have led to an increase in attempts to model the spread and behaviour of wildland fires across the landscape. This series of review papers endeavours to critically and comprehensively review all types of surface fire spread models developed since 1990. This paper reviews models of an empirical or quasi-empirical nature. These models are based solely on the statistical analysis of experimentally obtained data with or without some physical framework for the basis of the relations. Other papers in the series review models of a physical or quasi-physical nature, and mathematical analogues and simulation models. The main relations of empirical models are that of wind speed and fuel moisture content with rate of forward spread. Comparisons are made of the different functional relationships selected by various authors for these variables.Comment: 22 pages + 7 pages references + 2 pages tables + 2 pages figures. Submitted to International Journal of Wildland Fir