2,823 research outputs found

    Sensing Small Changes in a Wave Chaotic Scattering System

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    Classical analogs of the quantum mechanical concepts of the Loschmidt Echo and quantum fidelity are developed with the goal of detecting small perturbations in a closed wave chaotic region. Sensing techniques that employ a one-recording-channel time-reversal-mirror, which in turn relies on time reversal invariance and spatial reciprocity of the classical wave equation, are introduced. In analogy with quantum fidelity, we employ Scattering Fidelity techniques which work by comparing response signals of the scattering region, by means of cross correlation and mutual information of signals. The performance of the sensing techniques is compared for various perturbations induced experimentally in an acoustic resonant cavity. The acoustic signals are parametrically processed to mitigate the effect of dissipation and to vary the spatial diversity of the sensing schemes. In addition to static boundary condition perturbations at specified locations, perturbations to the medium of wave propagation are shown to be detectable, opening up various real world sensing applications in which a false negative cannot be tolerated.Comment: 14 pages, 11 figures, as published on J. Appl. Phy

    Friends of Musselman Library Newsletter Fall 2019

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    From the Dean (Robin Wagner) Library News Cite and Bite Workshops Open Access Week (Janelle Wertzberger, Alecea Standlee, Hana Huskic) Notes at Noon Friends Sponsor Guild Participation (Mary Wootton) Stop the Bleed The Wall Must Go Story Time Table to Farm Pop-up Library Take the Reading Challenge 1,000,000 Grant to Digitize Asian Art Vietnam Oral Histories (Ron Bailey \u2767, Sue Hill \u2767, Michael Birkner, Devin McKinney) Alexander von Humboldt\u27s Secretary (William Bowman) Focus on Philanthropy: Walter Miller Trust A Gift in 3 Dimensions (Richard C. Ryder \u2770) Remembering Richard Ryder \u2770 (Michael Birkner) New Externship - Careers in Library and Information Science (Camille Minns \u2720, Jivan Kharel \u2720) Textbook Affordability is a Workshop Topic (Janelle Wertzberger) Candid Camera (Dwight Eisenhower, Willard Paul, William C. Darrah) GettDigital: Rooted in Memory Uncovering Shakespeare\u27s Sisters (Suzanne Flynn) Touchdown: First Year Athletes Trade Field for Library (Betsy Bein, John Dettinger) Recent Additions: World War II - Photographs and Memorabilia (William Millar \u2754, Walter Lane, Gerald Royals \u2752, Donald Gallion \u2748, Ralph Edgar Peters, Burdette J. Marker) Alumnus Donates Trade Cards (Gary Thompson \u2769

    Friends of Musselman Library Newsletter Fall 2016

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    From the Dean (Robin Wagner) Library Exhibits GettDigital: Sports Reels Research Reflections: The Gettysburg Superstar (Devin McKinney) Remembering 9/12 Will Power: 400 Years After the Bard Treasure Island (Robin Wagner) Margin of Error A Call to Activism in the Summer of \u2765 (Richard Hutch \u2767) Digital Scholarship: The New Frontier (Julia Wall \u2719, Lauren White \u2718, Keira Koch \u2719) Scrapbooks and Photo Albums: Snapshots of History (Clara A. Baker \u2730) Soldiers\u27 Scrapbooks (Laura Bergin \u2717) A Book of Dreams (Alexa Schreier) Who Do You Think You Are? (Timothy Shannon) From Professor-Student to Collaborators (Jesse Siegel \u2716) The Mysterious Easel Monument (William Tuceling \u2770) Gifts to Special Collections and College Archive

    Friends of Musselman Library Newsletter Fall 2013

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    Table of Contents: From the Director: Honoring Memories (Robin Wagner); Civil War Flag Unfurls Adams County’s History (Richard Ogden); Video Goes Behind the Scenes: Meet the Musselman Interns and Musselman Library Internship Experience (Linnea Goebel ’13, Mary Wooton); Fund Assists Purchase of Civil War Materials; Music at Musselman; Focus on Philanthropy (Bruce Stefany ’71); A Drummer Boy’s Legacy Makes its Way to Gettysburg (Charlotte Smedley); Class of 1963 Comes Home Again (Ron Couchman ’63); New Archivist Has Her Own History with the College (Amy Lucadamo ’00, Timothy Shannon); GettDigital- The Albert Chance Archive (Barbara Chance Hall); Snow Cones, Sasparilla and Rebel Red: Documenting the 150th; Service and Dedication: One Boy Scout’s Memories (Bob Kuhn); Exhibit Chronicles Experiences of a Student Soldier (Pvt. Herman S. Cook Class of 1866, Kristen M. Trout ’15, M. Patrick McCrary); Bookshelf- Archivist Publishes Fonda Biography (Devin McKinney); General Patton Relatives Donate Civil War Revolver (James D. Patton ’13, Robert and Victoria Patton); Summer Internship Draws Intense Competition (Diane Werley Smith ’73, Dori Gorczyca ’15); Civil War Artifacts Enhance Collection (Bill Cleary P’15); Catching Fire (Stephanie Bowen

    Friends of Musselman Library Newsletter Spring 2006

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    Table of Contents: From the Director: 25th Anniversary (Matt Harris ’83, Jenniger Pollock ’06); Unveiling the Past: Hidden Treasures of the Gettysburg College Asian Art Collection (Molly Hutton, Dr. Frank H. Kramer ’14); Music at Musselman: Smithsonian Global Sound; Just What is a Music Librarian? (Tim Sestrick); Spotlight on Collecting: Lincoln Sermons (Karen Drickamer, John Barnett); Focus on Philanthropy; Spring Blooms at Musselman Library (Pat Henry ’71); Library news: BoNanas, Muscle Man, Hoch’s Book, Mashiko Potters, One Book, Summer Reads (Gabor Borrit, Dr. Bradley Hoch); GettDigital: Gettysburgian; Library acquires Early American Newspapers; Coming This Fall: Jewish Literature (Stephen Stern, Janelle Wertzberger); Hidden Talents (Kay Etheridge); Clowning Around with Jeffrey Gabel; Where Are They Now? Holley Interns (Molly Thomas Larkin ’98, Kelly Kemp Spies ’99, Jennifer Chesnet Harp ’03, Meggan Emler Smith ’04, Jason Kowell ’05); Intern Delves Into College History (Nicole Lenart ’06); Replicas of Remington’s Bronzes on Display (Molly Hutton

    Friends of Musselman Library Newsletter Fall 2007

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    Table of Contents: From the Director: Strategic Planning (Robin Wagner, Kerri Odess-Harnish); Book Cart Drill Team Wins Silver; Save the Date (Stephen Herr ’89, Stewart W. Herman Jr. ‘30); Fortenbaugh Intern (Dave Hadley ’09); Nicaraguan Pottery Exhibit; Music at Musselman Library; Composer Libby Larsen Donates Archive (Lisa Terjesen ’06, Tim Sestrick); Hidden Talents: Robocalifragilistic (Sharon Birch); Library exhibits (Raj Ramanathapillai); First Impressions (Natalie Hinton, Susan Pinkey); Report of Gifts 2006-2007; Focus on Philanthropy (Dr. Paul Muchinsky, George Hay Kain 1897); Call for Alumni Collectors; Database “Scopus” (Hubert Luther McSherry ’15, Jaimie N. Schock ’09); Musselman Library Trivia; The Advisor is In (Daniel R. Gilbert Jr., Anukul Gurung ’09, Lara Grieco ’07, Maggie O’Reilly ’09); Alumni Authors (Ellen Shaw Bakalian ’82, J. Michael Bishop ’57, Dave Brown ’82, Jennifer Bryant ’82, Deborah V.R. Harper ’82, Leslie Mass ’62, Janet Morgan Riggs ’77, George H. Sweet Jr. ‘42, David Tohn ’87, Michael Birkner ‘72); Holley Intern (Tara Wink ’07); When It Comes to Movies, She’s the Star (Nancy Johnson); A Tree Grows in Musselman Library (Penny Sites, Nancy Costella, Sheman Hendrix

    Friends of Musselman Library Newsletter Spring 2005

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    Table of Contents: From the Director: “Forever Free” Abraham Lincoln Exhibit (Robin Wagner, Christina Ericson Hansen ’92, Gabor Boritt); Fortenbaugh Internship Expands (Julia Grover ’06, Anne Kennedy ’05); Bontanicals Brighten Browsing Room (Jim Ramos); Asian Art Award Announced (Karen Drickamer); Apache Visions: Exhibit Features Skateboard Art; Barbara Holley Establishes Preservation Fund for Library (Barbara Holley ’54); Library News: Athletic Windfall, Reading Al Fresco, Library Tunes, Newspaper and Magazine Browsing, Majestic Theatre Exhibit, Civil War Manuscripts, Oral History, FoML Helps New Voters (Henry T. Bream ’24, Jack Bream ’57, Robert C. ’62, Marsha Parker ’62, Dr. William Sunderman Senior ’19, Jake Yingling ’52 and Genevieve Yingling); Student Projects Featured in Music Exhibition (Dr. William Sunderman Senior ’19, Tim Sestrick, Marta Robertson); In Her Own Words; Spring Lecture on Citron (Molly Hutton, Thomas Citron ’47, Virginia Eshbach Citron ’47); Second Spring Friends Lecture: “The Cyclorama Building and the Loss of Cultural Landscape at Gettysburg”; Focus on Philanthropy: Gift Supports Purchases of Nineteenth Century Documents (Dr. Bradley Hoch); Giving Students a Break (Meggan Emler Smith \u2704, Anne Kennedy, Sujita Kong); Spotlight on Collecting: Captivity Narritives (Edward Maharay, Janet Hancock Maharay ’39, Tim Shannon); Weird and Gross in the Librar

    Friends of Musselman Library Newsletter Fall 2003

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    Table of Contents: From the Director: Refurbishments (Robin Wagner); Friends Enhance New Browsing Room; Save the Date: Weiser to Speak on Fraktur at Fall Friends Event (Reverend Fredrick Weiser ’57); Cooper Fund Supports Browsing Collection (Thomas Yost Cooper, Ty Cooper); Asian Art Collection to Be Available Online (Katherine Gallup ’02); Gift Enables Purchase of Health and Exercise Science Books (Elizabeth Wescott, Richard Wescott); Watanabe Paintings Exhibited in Library (Sadao Watanable, Father Glen H. Bowersox ’42); Lincoln Exhibit Coming to Musselman Library; Report of Gifts 2002-2003; Jen Chesney Chosen as Library Intern (Jennifer L Chesney ’03, Richard A. Arms, Barbara Holley ’54); Women’s League Records Archived in Special Collections (Katie Gallup ’02, Karen Drickamer, Christine Ameduri, Jennifer Chesney ’03); Library Supports Migrant Education (Janelle Wertzberger); Vietnam is Focus of Fortenbaugh Intern (Joseph Tucker ’03, Stephen H. Warner ’68); Outstanding Foreign Films; Notable Recent Purchases for Special Collections; Poorhouse Records for Genealogists (J. Matthew Gallman

    Friends of Musselman Library Newsletter Spring 2004

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    Table of Contents: From the Director: Events By the Library (Robin Wagner, Janelle Wertzberger, Larry Marschall, Andrea Harries ’04); ONE BOOK Come to Gettysburg (Ursula Hegi); Friends Join Friends for Spring Event April 20th, Featuring Transit of Venus (Larry Marschall); New Book on Stephen H. Warner \u2768 (Arthur J. Amchan, Stephen H. Warner ’68); Library Combats Waste; Scholarly Study Stuckenberg Maps (James Myers, Dan DeNicola, John Docktor); It Takes More Than Two to Tango: Students Paint Library Walls (Nancy Cushing-Daniels, Cassandra Cochran, Ashley Gilgore, Lisa Hinkel, Shianne Settlage); Students Organize WWII Exhibit (Bill Bowman); Emler and Light Named Fortenbaugh Interns (Meggan Emler ’04, Stephen Light ’05) Spotlight on Collections (Jacob Yingling ’52, Keith Swaney ’03); County Histories Come Alive as eBooks (Milton Burgess ’22); Colorful Children’s Toys Exhibit; Klos Gift Transforms Collection (Sarah Wolf Klos ’48, Reverend Frank W. Klos Junior ’46, Reverend G. Edgar Wolfe ‘09); Foreign Films in English (Nancy Johnson); Notable Recent Purchases in Special Collections; Rare Slavery Materials Available; Friends Fundraiser Features Frankenstei
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