551 research outputs found

    Microcoil Spring Interconnects for Ceramic Grid Array Integrated Circuits

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    As integrated circuit miniaturization trends continue, they drive the need for smaller higher input/output (I/O) packages. Hermetically sealed ceramic area array parts are the package of choice by the space community for high reliability space flight electronic hardware. Unfortunately, the coefficient of thermal expansion mismatch between the ceramic area array package and the epoxy glass printed wiring board limits the life of the interconnecting solder joint. This work presents the results of an investigation by Marshall Space Flight Center into a method to increase the life of this second level interconnection by the use of compliant microcoil springs. The design of the spring and its attachment process are presented along with thermal cycling results of microcoil springs (MCS) compared with state-of-the-art ball and column interconnections. Vibration testing has been conducted on MCS and high lead column parts. Radio frequency simulation and measurements have been made and the MCS has been modeled and a stress analysis performed. Thermal cycling and vibration testing have shown MCS interconnects to be significantly more reliable than solder columns. Also, MCS interconnects are less prone to handling damage than solder columns. Future work that includes shock testing, incorporation into a digital signal processor board, and process evaluation of expansion from a 400 I/O device to a device with over 1,100 I/O is identified

    Ursinus College Alumni Journal, November 1963

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    The President writes • A kaleidoscopic view of the student • The student looks at himself • The faculty comments • Modern German literature • Founders\u27 Day • Spangler portrait unveiled • Dr. Helfferich\u27s remarks • Board elects two members • Campaign receipts total $223,416 • Eshbach resigns • Loyalty Fund vis-a-vis capital funds campaign • Wills • Ursinus: 1963-64 • Staiger\u27s latest publication • Mr. and Mrs. Ursinus visit U.C. • Rothenberger honored • Howard listed • Ursinus entertains neighbors • Travel seminar • Student teachers rank high • They carry big sticks • 1963-64 winter sports schedules • Homecoming • Football • Hockey all-stars • G. Sieber Pancoast, \u2737 • Class notes • Weddings • Births • Necrologyhttps://digitalcommons.ursinus.edu/alumnijournal/1078/thumbnail.jp

    Ursinus College Alumni Journal, July 1961

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    The President writes • Thirty years of champions and their coach • Were we wrong about the Victorians? • A view of Vietnam • A philosopher looks at Barry Goldwater • The alumni seminar • Dr. Paisley dies • William D. Reimert elected President of the Board of Directors • Ursinus willed $92,657 • Commencement, 1961 • Peirce paints McClure portrait • Cutting campus • Alumni Day review • Constitution change • Loyalty Fund tops 50% participation • Election results • Alumni awards committee • Montgomery regional organized • A Far East odyssey • Harry L. Showalter, \u2741 • Best track season in Ursinus history • Baseball and tennis • Clarence A. Warden, Jr. • Class notes • The class of 1897 • Weddings • Births • Necrology • College chaplain haiku experthttps://digitalcommons.ursinus.edu/alumnijournal/1071/thumbnail.jp

    Estrogen Receptor Genotypes, Menopausal Status, and the Lipid Effects of Tamoxifen

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/109885/1/cpt6100343.pd

    Ursinus College Alumni Journal, November 1964

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    President\u27s letter • Charles David Mattern, 1907-1964: With tributes from some of his colleagues • Professor without portfolio: A portrait of the Rev. John Henry Augustus Bomberger, D. D., founder and first president of Ursinus College and School of Theology • The contemporary French literary scene • Quarter-century change . . . decade planning • Student facilities building construction moves steadily toward completion by mid-\u2765 • Joseph Chapline, \u2742, former computer expert builds organs - tells how and why • Larry Koch, \u2762, advances with Western Electric • Schellhase saga • Insurance executive, author - historian, two new members of Ursinus Board • The 1964 European travel seminar • Yale Press to publish Dr. Foster\u27s volumes • Four Ursinus alumni attend campus conference for furloughed missionaries • Pancoast, \u2737 elected to Pennsylvania House of Representatives • Collegeville comes to life as Ursinus students return • Founders Day focus on distinguished alumni • Remarks presenting portrait of President of Ursinus Board • Gutenberg Bible reproductions presented by Henry Pfeiffer, \u2748 • Loyalty Fund report: October 10, 1964 • Sports victories, crowning of Queen Jeanne, feature 1964 Homecoming Day at Ursinus • Twenty-three bear cubs in Ursinus freshman class • Frederick Wentz named college business manager • Another John H. A. Bomberger • Alumni news and notes • Weddings • Births • Necrology • Former Dean dead at 83 • Vice-president of directors dies unexpectedly November 1 • Former board member dies • Ursinus Women\u27s Club luncheon December 5 • Chef Colameco hurt in railroad wreck • You need a will . . . and Ursinus needs to be rememberedhttps://digitalcommons.ursinus.edu/alumnijournal/1081/thumbnail.jp

    Application of new methods of environment analysis and assessment in landscape audits : case studies of urban areas like Czestochowa, Poland

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    Following the 2000 European Landscape Convention, a new act strengthening landscape protection instruments has been in force since 2015. It sets forth legal aspects of landscape shaping (Dziennik Ustaw 2015, poz. 774) and introduces landscape audits at the province level. A landscape audit consists in identification and characterization of selected landscapes, assessment of their value, selection of so-called priority landscapes and identification of threats for preservation of their value. An audit complies with GIS standards. Analyses use source materials, i.e. digital maps of physical-geographical mesoregions, current topographic maps of digital resources of cartographic databases, latest orthophotomaps and DTMs, maps of potential vegetation, geobotanic regionalization, historic-cultural regionalization and natural landscape types, documentation of historical and cultural values and related complementary resources. A special new methodology (Solon et al. 2014), developed for auditing, was tested in 2015 in an urban area (Myga-Piatek et al. 2015). Landscapes are characterized by determining their analytic (natural and cultural) and synthetic features, with particular focus on the stage of delimitation and identification of landscape units in urban areas. Czestochowa was selected as a case study due to its large natural (karst landscapes of the Czestochowa Upland, numerous forests, nature reserves) and cultural (Saint Mary’s Sanctuary, unique urban architecture) potential. Czestochowa is also a city of former iron ore and mineral resources exploitation, still active industry, dynamic urban sprawl within former farming areas, and dynamically growing tourism. Landscape delimitation and identification distinguished 75 landscape units basing on uniform landscape background (uniform cover and use of the land). Landscape assessment used a new assessment method for anthropogenic transformation of landscape – the indicator describing the correlation between the mean shape index (MSI) and the Shannon diversity index (SHDI) (Pukowiec-Kurda, Sobala 2016). Particular threats and planning suggestions, useful in development of urban areas, were presented for selected priority landscapes

    Ursinus College Alumni Journal, November 1962

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    The President\u27s page • When the shades of evening gather • The frontier Dr. Toynbee forgot • Founders\u27 Day • Ralph F. Wismer dies • Ursinus: The man and his work • New professors • Maurice O. Bone • Nine foreign students at Ursinus • Forums • Report from the Admissions Office • Freshmen Whose Parents are Alumni • Homecoming • News of preceptresses • Summer maintenance • Co-eds work with Indians • Parents\u27 Day • The bread and wine mission • Progress report • How scholarships are founded • Capital funds campaign • Dr. Helfferich says Thank you • Area dinners • Dr. Wagner reports on his trip to Nigeria • Football • Hockey • Lacrosse • Basketball • Wrestling • New wrestling coach • Vernon Morgan \u2761 • New mascot • Allen C. Harman \u2726 • Craig R. Reckard \u2762 • Kenneth S. Kauffman \u2724 • Dorothy J. Marple \u2748 • James J. Peifer \u2748 • Constitution changes proposed • Class notes • Births • Necrology • Weddings • The Innkeepershttps://digitalcommons.ursinus.edu/alumnijournal/1075/thumbnail.jp

    Ursinus College Alumni Journal, November 1959

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    President\u27s page • President Helfferich honored • Office of Admissions • Founders\u27 Day • Chemistry at Ursinus • Ruth H. Rothenberger, \u2736 Dean of Women • Faculty summers • National Science Foundation grant • Whatley, Dean of Men and assistant football coach • A commentary: American arms policy • Critique • Seelye appointed to teach Spanish • Evening School • Directory to be sent to all living alumni • North Jersey-Shore regional organized • Old Timers\u27 Day • Schoolmen\u27s Week luncheon • Alumnae undefeated for third consecutive year • Impressions of Sweden • Among the Andean Indians • Wrestling • Hockey • Basketball • New coaches • Football • Six years of alumni sponsorship completed: $155,746 collected for Ursinus in this period • 1959 Loyalty Fund report • Loyalty Fund all-stars honored at banquet • Publicity • Honor roll by classes • Thomas Beddow, \u2736 Loyalty Fund chairman of the year • The last shall be first • Results of the 1959 Loyalty Fund campaign • Contributors for the 1959 Loyalty Fund campaign • News about ourselves • Ursinus Women\u27s Club executive board meets • Messiah to be presented • Weddings • Births • Necrologyhttps://digitalcommons.ursinus.edu/alumnijournal/1066/thumbnail.jp

    Ursinus College Alumni Journal, November 1960

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    President\u27s page • Founders\u27 Day • Wayne Brown memorial • Ritter receives degree • Admissions report • Alumnae in Who\u27s Who • Dr. Helfferich honored • Brother of Dalai Lama at Ursinus • Ursinus Women\u27s Club • Old Timers\u27 Day • Psychology\u27s place in a liberal education • The faculty, cornered • Forsan et haec • Education - Scottish and American • 1960 football results • Vernon Morgan, \u2761 Ursinus\u27 greatest runner • Seven years of alumni sponsorship completed: $188,473 collected for Ursinus in this period • Dr. Helfferich speaks • Loyalty Fund all stars • 1960 Loyalty Fund report • Advance Loyalty Fund report for 1961 • Results of the 1960 Loyalty Fund campaign • Contributors for the 1960 Loyalty Fund campaign • New reunion schedule to begin in 1961 • News about ourselves • Weddings • Births • Necrologyhttps://digitalcommons.ursinus.edu/alumnijournal/1069/thumbnail.jp
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