The Effects of Elevator Rate Limiting and Stick Dynamics on Longitudinal Pilot-Induced Oscillations

This report presents the results of an investigation into the effects of elevator rate limiting and stick dynamics on longitudinal pilot-induced oscillations (PIO). A simulation study was conducted to prepare for the flight test, but also to gain insight into the effects of rate limiting and stick dynamics. Due to the non-numerical nature of the simulation results, a flexible three-phase flight test plan was developed, first varying the rate limits, then varying the stick dynamics, and finally flying a matrix determined in the first two phases. There were three major conclusions. First, the offset landing task flown was insufficient to consistently uncover handling qualities deficiencies of the aircraft configuration flown. Second, rate limiting did not necessarily cause PIOs. At very low rate limits the problem was lack of pitch response, not PIO. Any oscillations were very low frequency and small in amplitude. Third, for this configuration and task, variations in stick spring constant and natural frequency had negligible effect on the performance of the system with respect to assigned PIO and Cooper-Harper ratings. These conclusions are specific to this system and may not apply to all aircraft, especially aircraft where PIO tendencies are driven by much higher rate limits

Bungalow Neighborhoods of North Omaha.

Omaha, Nebraska, not unlike numerous other towns and cities throughout the United States, experienced a period of tremendous growth during the early decades of this century. Changes in industrial technology, an increasing work force, and innovative intra-urban transportation networks combined to bring a new look to the city. The bungalow-style house is one of many house styles which, in identifying its stylistic elements, location, and distribution within a city, offers insight into urban growth and elements of popular taste. Studying the single-family home generates information which may help guide geographers to the essence of the urban landscape, both past and present

Children's eating behaviours: The importance of the family setting

Childhood obesity has become a major public health challenge. Whilst it is accepted that the aetiology of obesity is complex, there is very little that targets the home environment and specifically looks at the family setting and how this influences children's eating behaviours. This research aimed to redress the balance by alerting people to the importance of the family environment as a contributory factor for childhood obesity. Using a grounded theory approach, 'Ordering of eating' highlights the importance of the family setting and demonstrates how micro and macro order influences the development of children's eating behaviours. © Journal compilation © 2008 Royal Geographical Society (with the Institute of British Geographers)

Parliaments in security policy: involvement, politicisation, and influence

While parliaments have long been neglected actors in the analysis of security policy, recent studies indicate a slowly growing research literature on the subject. This introduction to a special issue on parliaments in security policy critically reviews this literature. It argues that current research is focused primarily on how parliaments, relying on formal legal competences, can constrain governmental policies and that this research needs expansion in three areas. First, informal sources of parliamentary influence on security policy deserve more systematic attention as the significance of parliaments in concrete cases often hinges on contextual factors and individual decision-makers. Secondly, we still lack a systematic understanding of the effects of parliamentary involvement on security policy and especially broader patterns that would be discernible across a wider variety of countries and policies. Finally, the role of parliaments for the politics of security is almost completely uncharted territory so far. When parliaments become involved in security policy, does this foster transparency and contribute to the politicization of security policy so that security policy becomes a “normal” political issue? The article reviews current research, derives findings from the contributions to this special issue, and spells out their wider implications for the study of domestic politics and international relations, before concluding with some avenues for future research

Student Perception of the Impact of Audience Response Software in a Team-Based Learning Self-Care Course

Objectives: Evidence evaluating audience response systems (ARS) used in team-based learning (TBL) compared to traditional classes is limited. The objectives of this study are to evaluate student perceptions of the technology and compare students’ assessment of technology with their performance. Method: TBL was implemented in the required self-care course (PP2120: Introduction to Pharmaceutical Care: Non-prescription drugs) at St. Louis College of Pharmacy, and an audience response system was implemented in Fall 2015. At the conclusion of the course, a web-based survey was administered to students. Results: Of the 29 students who successfully completed the course, 23 (79%) completed the survey. Student response to the audience response technology was generally favorable. Of the students who responded “somewhat agree” and “strongly agree” to questions related to ARS, 87% were more actively involved in the case, 96% felt the visual responses made understanding easier, and 91% felt the ARS would be useful in other courses in the curriculum. Student performance in the course was analyzed by Pearson correlation and was positively correlated with students who self-reported as technology enthusiasts (0.509, p=0.016) and early adopters of technology (0.601, p=0.004). Implications: This is the first study to measure the impact of ARS with TBL implementation in a self-care course. ARS data can be used to help implement TBL in pharmacy school curricula and further research can be performed to link student adoption of technology to performance in courses that implement ARS

Convincing Oregon\u27s Dairy Industry They Have a Problem with Phosphorus

Dairy nutritionists historically balanced milk cow rations for phosphorus at .45 to .5 % DM of the total ration. New studies have shown a high producing milk cow only requires a diet at .38% DM. Thirty-seven farms were studied to determine and compare P feeding levels in Oregon. The results of the project were then incorporated into educational programs. The average farm studied was over feeding by 18%. Eighty-nine percent of producers surveyed indicated this project increased their understanding of the problem we face as an industry. Approximately 50% of producers participating reduced P feeding on their farm