Factors Affecting Profitable Angora Goat Production in Texas.

4 p

TB77: Paths Out of Poverty: Research in the Northeast

This publication presents summaries of poverty research done under the aegis of the U.S. Department of Agriculture and the agricultural experiment stations of eight cooperating land grant universities in the Northeast. The project was designated as Paths Out of Poverty and was identified as NE-68. While there is a general introduction, as well as introductions to the two main sections and a concluding summary, the major focus of the publication is the summaries of the various research projects. The reader is directed to the list of references following the entries of the individual states. In most cases reference is made to publications which present the summarized data in more detail.https://digitalcommons.library.umaine.edu/aes_techbulletin/1128/thumbnail.jp

Letter From James H. Groff to Alfred L. Shoemaker

A handwritten letter from James H. Groff addressed to Alfred L. Shoemaker, dating from circa 1950. Within, Groff writes to detail some of his childhood memories involving Pennsylvania Dutch customs and superstitions.https://digitalcommons.ursinus.edu/shoemaker_documents/1278/thumbnail.jp

Pennsylvania Folklife Vol. 37, No. 2

• The Junior Republic Movement in Pennsylvania: Youth Care in Grove City and Redington • Brechloch, or Rapp\u27s Harmony Society and the Production of Flax, Hemp, and Linen in Pennsylvania and Indiana • Some Neglected Swiss Literature on the Forebay Bank Barn • Hoping for the Best, Yet Fearing the Worst : An Overview of Civil War Medical Care Until the Battle of Gettysburg • Aldes un Neieshttps://digitalcommons.ursinus.edu/pafolklifemag/1118/thumbnail.jp

Phase transition curves for mesoscopic superconducting samples

We compute the phase transition curves for mesoscopic superconductors. Special emphasis is given to the limiting shape of the curve when the magnetic flux is large. We derive an asymptotic formula for the ground state of the Schr\"odinger equation in the presence of large applied flux. The expansion is shown to be sensitive to the smoothness of the domain. The theoretical results are compared to recent experiments.Comment: 8 pages, 1 figur

Aircraft Loss of Control: Problem Analysis for the Development and Validation of Technology Solutions

Aircraft loss of control (LOC) is a leading cause of fatal accidents across all transport airplane and operational classes. LOC can result from a wide spectrum of precursors (or hazards), often occurring in combination. Technologies developed for LOC prevention and recovery must therefore be effective under a wide variety of conditions and uncertainties, including multiple hazards, and the validation process must provide a means of assessing system effectiveness and coverage of these hazards. This paper provides a detailed description of a methodology for analyzing LOC as a dynamics and control problem for the purpose of developing effective technology solutions. The paper includes a definition of LOC based on several recent publications, a detailed description of a refined LOC accident analysis process that is illustrated via selected example cases, and a description of planned follow-on activities for identifying future potential LOC risks and the development of LOC test scenarios. Some preliminary considerations for LOC of Unmanned Aircraft Systems (UAS) and for their safe integration into the National Airspace System (NAS) are also discussed

Preliminary Analysis of Aircraft Loss of Control Accidents: Worst Case Precursor Combinations and Temporal Sequencing

Aircraft loss of control (LOC) is a leading cause of fatal accidents across all transport airplane and operational classes, and can result from a wide spectrum of hazards, often occurring in combination. Technologies developed for LOC prevention and recovery must therefore be effective under a wide variety of conditions and uncertainties, including multiple hazards, and their validation must provide a means of assessing system effectiveness and coverage of these hazards. This requires the definition of a comprehensive set of LOC test scenarios based on accident and incident data as well as future risks. This paper defines a comprehensive set of accidents and incidents over a recent 15 year period, and presents preliminary analysis results to identify worst-case combinations of causal and contributing factors (i.e., accident precursors) and how they sequence in time. Such analyses can provide insight in developing effective solutions for LOC, and form the basis for developing test scenarios that can be used in evaluating them. Preliminary findings based on the results of this paper indicate that system failures or malfunctions, crew actions or inactions, vehicle impairment conditions, and vehicle upsets contributed the most to accidents and fatalities, followed by inclement weather or atmospheric disturbances and poor visibility. Follow-on research will include finalizing the analysis through a team consensus process, defining future risks, and developing a comprehensive set of test scenarios with correlation to the accidents, incidents, and future risks. Since enhanced engineering simulations are required for batch and piloted evaluations under realistic LOC precursor conditions, these test scenarios can also serve as a high-level requirement for defining the engineering simulation enhancements needed for generating them