Counting the Microstates of a Kerr Black Hole

We show that an extremal Kerr black hole, appropriately lifted to M-theory, can be transformed to a Kaluza-Klein black hole in M-theory, or a D0-D6 charged black hole in string theory. Since all the microstates of the latter have recently been identified, one can exactly reproduce the entropy of an extremal Kerr black hole. We also show that the topology of the event horizon is not well defined in M-theory.Comment: 10 pages, 2 figure

Field Work in Community Organizations for the Deaf

Non

Work of the NHS England Youth Forum and its effect on health services.

©2018 RCN Publishing Company Ltd. All rights reserved. Not to be copied, transmitted or recorded in any way, in whole or part, without prior permission of the publishers.AIM: To examine the role of members of the NHS England Youth Forum (NHSEYF) and the strategies used to influence health service provision for children and young people. METHOD: An evaluative mixed-methods study was commissioned by NHS England and undertaken by the University of Hertfordshire between July 2015 and September 2016. Data collection comprised activity logs, a form of questionnaire, and semi-structured interviews. FINDINGS: The analysis of the activity logs revealed that the young people were undertaking a wide range of activities across England. Seven themes emerged from the interviews: the young people; motivation; commitment; community (the local area as well as a community spirit); knowledge experts; youth workers; and funding. In summary, the members of the NHSEYF were committed to their role and their work was having a positive effect on health service provision. CONCLUSION: The NHSEYF has developed rapidly and successfully. It is enabling the voice of young people to be heard.Peer reviewedFinal Published versio

ICAN sensitivity analysis

A computer program called Integrated Composite Analyzer (ICAN) was used to predict the properties of high-temperature polymer matrix composites. ICAN is a collection of NASA Lewis Research Center-developed computer codes designed to carry out analysis of multilayered fiber composites. The material properties used as input to the program were those of the thermoset polyimide resin PMR-15 and the carbon fiber Celion 6000. The sensitivity of the predicted composite properties to variations in the resin and fiber properties was examined. In addition, the predicted results were compared with experimental data. In most cases, the effect of changes in resin and fiber properties on composite properties was reasonable. However, the variations in the composite strengths with the moisture content of the PMR-15 resin were inconsistent. The ICAN-predicted composite moduli agreed fairly well with experimental values, but the predicted composite strengths were generally lower than experimental values

Contemporary Music Styles in Adventist Youth Ministry

The styles of music utilised in Seventh-day Adventist youth ministry is an area which can be stifled by pharisaical prejudice and become an embarrassment in our witness, and more importantly, the nurture of youth in the church suffer unnecessarily in several respects: the consequences of unbalanced and immature modelling of Christian attitudes; their enjoyment of worship; their enjoyment of music; and their Christian experience and witness

Review of \u3ci\u3eThe West of Wild Bill Hickok\u3c/i\u3e By Joseph G. Rosa

Joseph G. Rosa\u27s earlier book They Called Him Wild Bill is not only the definitive biography of the redoubtable James Butler Hickok but also a model for biographies of other western figures. The same qualities that marked Rosa\u27s original biography of Hickok are evident in the present work. The West of Wild Bill Hickok is not a revision of the original biography (although it does present some new material not included in Rosa\u27s 1974 revised edition), but rather, a thoughtful and detailed examination of the photographic record of the life and times of wild Bill Hickok. The purpose of the book is to reproduce in one volume all the known portraits of wild Bill Hickok, together with a selection of photographs of his family, his friends, his foes, and the places that knew him. Eschewing the temptation to make the book simply an album of Hickok photographs, Rosa uses a spare chronological text to provide the context for the photographs and concentrates his efforts upon a careful analysis of the known likenesses of Hickok. Rosa examines photographs with the same demanding standards that he used in researching newspapers, original documents, and reminiscences. Rosa seeks to place the photographs in the correct chronological sequence, to determine when and where they were made, and who made them. He also presents a sampling of illustrations, drawings, and popular dime novel likenesses. Rosa reveals a number of attempts to alter and change photographs and points out the sometimes unfortunate results of this practice. Yet, ultimately, the technical analysis is not what makes this book work. Its main contribution is to add a human dimension to the Hickok story. When Rosa published They Called Him Wild Bill nearly twenty years ago, Hickok emerged from the shadowy world of frontier legend into the searching light of historical reality. Now, in this volume-as one gazes into the face of the man Hickok in all his moods; as one is introduced to Hickok\u27s father and mother, his brothers and his sisters; as one sees the places and people that shared his experiences-the light softens, and wild Bill emerges as a human being of flesh and bone. The West of Wild Bill Hickok testifies to the power of the photograph as a historical tool and to the importance of learning to use photographs as an integral part of historical research rather than as an afterthought. The West of Wild Bill Hickok should be on the shelf of every student of the old West next to They Called Him Wild Bill

Appendix: Thoughts on John Evans and Sand Creek

Apart from political rivalry, there was little reason to oppose John Evans as governor of Colorado. He was a success by almost any standard one chose to apply. He was a self-made man, a son of the Middle West. He grew up in a Quaker family in Indiana, and although he converted to Methodism later, Protestant evangelism was a central feature of his character and experience. As a young man, he set his goals high—to build a city, to found a college, to create a fortune, to become a governor, to be elected to the United States Senate, and to make a name for himself. He became a physician, taught medicine, and became an early advocate of various causes, including the creation of hospitals and treatment of the insane. He invested in real estate and railroads. He donated land for the construction of hospitals and universities and sought political office. He opposed slavery and joined the Republican party during the 1850s. By 1861, he had achieved most of his goals. He wanted to expand his wealth and saw the way to do it in railroad expansion. He had not realized his political ambitions, so that the opportunity to become governor of Colorado served his interests both as a politician and as a railroad entrepreneur