5,877 research outputs found

    U.S. rural soldiers account for a disproportionately high share of casualties in Iraq and Afghanistan

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    A study by the Carsey Institute found that among U.S. soldiers serving in Iraq and Afghanistan, those who are from rural America are dying at a higher rate than those soldiers who are from cities and suburbs. According to U.S. Department of Defense records, rural youth enlist in the military at a higher rate than urban and suburban youth and in all but eight states, soldiers from rural areas make up a disproportionately high share of the casualties

    Composite seal for turbomachinery

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    A gas path seal suitable for use with a turbine engine or compressor is provided. A shroud wearable or abradable by the abrasion of the rotor blades of the turbine or compressor protects the rotor blades. A compliant backing surrounds the shroud. The backing may be made of corrugated sheets or the like with adjacent layers having off-set corrugations, with axes of the folds parallel to the rotor axis. The sheets may be bonded together at points of contact by brazing, welding or the like. In another embodiment a compliant material is covered with a thin ductile layer. A mounting fixture surrounds the backing

    Caddo Ceramics from an Early 18th Century Spanish Mission in East Texas: Mission San Jose de los Nasonis (41RK200)

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    Mission San Jose de los Nasonis (4JRK200) and two contemporaneous Nasoni Caddo sites (41RK191 and 41RK197) were located by Mr. Bill Young more than 25 years ago in the southern part of Rusk County, Texas after the general area of the site had been cleared of timber. The mission site covers ca. 6.6 acres of an upland ridge along a small tributary to the Angelina River; the ridge projects into the Angelina River floodplain. The topographic setting of Mission San Jose conforms in all particulars to the settings of other known mission sites established among the Caddo: small hills adjacent to a floodplain, next to a stream, with the hills lower extensions of more extensive upland areas. Corbin also notes that these missions were located within the area of the local dispersed Caddoan village, none of the locations are places suited to support the Indian-based community that the Spanish hoped to entice to the location. This mission was established as one of six different missions by the Spanish in 1716 during their second attempt (the first being in 1690-1691) to establish a religious and political presence among the Caddo peoples in East Texas, specifically to minister to the Nasoni Caddo living in the area. Mission San Jose de los Nasonis ·was formally established on July 10, 1716. Father Espinosa and Captain Don Domingo Ramon, the leader of the expedition, had noted that there were many Hasinai Caddo ranchos in the general area along with arroyos of water and good places for settlement. Both Nasoni and Nacono Caddo were then living in this area of the Angelina river. Mr. Young made those collections available for study in 2006, and this article is a summary of the Caddo ceramics in the Mission Nasonis collections. In 1990, Dr. James E. Corbin of Stephen F. Austin State University (SFASU) and Dr. Kathleen Gilmore of the University of North Texas conducted limited excavations in Area A at the mission site, but these excavations have never been published. More than 930 Caddo ceramic sherds were recovered in that work, and are curated at SFASU; the separate analysis of these ceramic artifacts is underway

    Rural soldiers continue to account for disproportionately high share of U.S. casualties in Iraq and Afghanistan

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    When the nation goes to war, all Americans are expected to make sacrifices. Today\u27s rural Americans, however, have fewer job opportunities within their communities, and are joining the military at higher rates. In turn, rural communities are facing military losses in disproportionate numbers to their urban counterparts

    Large isotope effect on TcT_c in cuprates despite of a small electron-phonon coupling

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    We calculate the isotope coefficients α\alpha and α\alpha^\ast for the superconducting critical temperature TcT_c and the pseudogap temperature TT^\ast in a mean-field treatment of the t-J model including phonons. The pseudogap phase is identified with the dd-charge-density wave (dd-CDW) phase in this model. Using the small electron-phonon coupling constant λd0.02\lambda_d \sim 0.02 obtained previously in LDA calculations in YBa2_2Cu3_3O7_7, α\alpha^{\ast} is negative but negligible small whereas α\alpha increases from about 0.03 at optimal doping to values around 1 at small dopings in agreement with the general trend observed in many cuprates. Using a simple phase fluctuation model where the dd-CDW has only short-range correlations it is shown that the large increase of α\alpha at low dopings is rather universal and does not depend on the existence of sharp peaks in the density of states in the pseudogap state or on specific values of the phonon cutoff. It rather is caused by the large depletion of spectral weight at low frequencies by the dd-CDW and thus should also occur in other realizations of the pseudogap.Comment: 8 pages, 5 figures, to be publ. in PR

    Songlines and Navigation in Wardaman and other Australian Aboriginal Cultures

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    We discuss the songlines and navigation of the Wardaman people, and place them in context by comparing them with corresponding practices in other Australian Aboriginal language groups, using previously unpublished information and also information drawn from the literature. Songlines are effectively oral maps of the landscape, enabling the transmission of oral navigational skills in cultures that do not have a written language. In many cases, songlines on the earth are mirrored by songlines in the sky, enabling the sky to be used as a navigational tool, both by using it as a compass, and by using it as a mnemonicComment: accepted by JAH

    Featured Piece

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    This year the General Editors continued the tradition started last year by creating a feature piece to show our appreciation for the History Department. We selected four professors from the faculty to answer a question about history: what figure/event/idea inspires your interest in history? Reading their responses helped give us insight into the thoughts of these brilliant minds and further help us understand their passion for the subject we all share a common love and interest in. We hope that you enjoy reading their responses as much as we did. The four members of the faculty we spoke with are Dr. Abou Bamba, Dr. William Bowman, Dr. David Hadley, and Magdalena Sánchez
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