The Structure and Properties of Parachute Cloths

The requisite properties of a parachute cloth are discussed and the methods for measuring these properties described. In addition to the structural analysis of the cloths, the properties measured were weight, breaking strength, tear resistance, elasticity, and air permeability. Thirty-six silk cloths of domestic manufacture, not previously used in parachute construction are compared with some silk cloths of foreign manufacture. These foreign cloths were ones proven by trial and extended use to be suitable materials for parachute construction. Contrary to the belief that domestic woven cloths were not suitable materials for parachute construction, it is shown that many domestic silk cloths are satisfactory and in some respects superior to the foreign products. Based on a comparative study of all the cloths, specifications are drawn for the manufacture of silk parachute cloth

Interview with Edward Bulleit, January 7, 1997

Edward Ted Bulleit, Class of 1935, was interviewed on January 7, 1997 by Michael J. Birkner & David Hedrick about his time at Gettysburg College. He discusses his experiences of attending college during the Great Depression, the political science department, fraternity life and the administration of Henry W.A. Hanson. He also describes his years as a law student at Duke University, his time in the US Air Force during World War II, and his return to Gettysburg as a lawyer. Length of Interview: 72 minutes Collection Note: This oral history was selected from the Oral History Collection maintained by Special Collections & College Archives. Transcripts are available for browsing in the Special Collections Reading Room, 4th floor, Musselman Library. GettDigital contains the complete listing of oral histories done from 1978 to the present. To view this list and to access selected digital versions please visit -- http://gettysburg.cdmhost.com/cdm/landingpage/collection/p16274coll

Interview with Thomas Wolf, December 29, 1994 & August 9, 1995

Thomas Wolf was interviewed on December 29, 1994 & August 9, 1995 by Michael J. Birkner & David Hedrick about his service in World War II and involvement in the Nixon administration. He discusses his role in the Air Force Counterintelligence Corps during World War II, and his work with several government agencies, such as the Citizens of Eisenhower and the Office of Economic Opportunity. Wolf also describes the Watergate Scandal and his participation in the trial. Length of Interview: 92 Minutes (Part 1), 47 Minutes (Part 2) Collection Note: This oral history was selected from the Oral History Collection maintained by Special Collections & College Archives. Transcripts are available for browsing in the Special Collections Reading Room, 4th floor, Musselman Library. GettDigital contains the complete listing of oral histories done from 1978 to the present. To view this list and to access selected digital versions please visit -- http://gettysburg.cdmhost.com/cdm/landingpage/collection/p16274coll

Interview with Harold A. Dunkelberger, July 29, 1999

The first of two interviews, Harold A. Dunkelberger, a student and professor at Gettysburg College, was interviewed on July 29, 1999 by Michael J. Birkner & David Hedrick. He graduated with the class of 1936, and discusses his experience as a student of English at Gettysburg and his time at the Gettysburg Seminary. Length of Interview: 87 minutes Collection Note: This oral history was selected from the Oral History Collection maintained by Special Collections & College Archives. Transcripts are available for browsing in the Special Collections Reading Room, 4th floor, Musselman Library. GettDigital contains the complete listing of oral histories done from 1978 to the present. To view this list and to access selected digital versions please visit -- http://gettysburg.cdmhost.com/cdm/landingpage/collection/p16274coll

Interview with Robert D. Hanson, October 2, 1998

Robert D. Hanson, son of Gettysburg College President Henry W.A. Hanson, was interviewed on October 2, 1998 by Michael J. Birkner & David Hedrick. He discusses his father\u27s presidency, and what it was like to grow up in Gettysburg College\u27s White House. He also describes his experience as a student in the class of 1939--what it was like to be the son of the president as a student, fraternity life, academics, and his service in World War II. Length of Interview: 134 minutes Collection Note: This oral history was selected from the Oral History Collection maintained by Special Collections & College Archives. Transcripts are available for browsing in the Special Collections Reading Room, 4th floor, Musselman Library. GettDigital contains the complete listing of oral histories done from 1978 to the present. To view this list and to access selected digital versions please visit -- http://gettysburg.cdmhost.com/cdm/landingpage/collection/p16274coll

Discrete Adaptive Second Order Sliding Mode Controller Design with Application to Automotive Control Systems with Model Uncertainties

Sliding mode control (SMC) is a robust and computationally efficient solution for tracking control problems of highly nonlinear systems with a great deal of uncertainty. High frequency oscillations due to chattering phenomena and sensitivity to data sampling imprecisions limit the digital implementation of conventional first order continuous-time SMC. Higher order discrete SMC is an effective solution to reduce the chattering during the controller software implementation, and also overcome imprecisions due to data sampling. In this paper, a new adaptive second order discrete sliding mode control (DSMC) formulation is presented to mitigate data sampling imprecisions and uncertainties within the modeled plant's dynamics. The adaptation mechanism is derived based on a Lyapunov stability argument which guarantees asymptotic stability of the closed-loop system. The proposed controller is designed and tested on a highly nonlinear combustion engine tracking control problem. The simulation test results show that the second order DSMC can improve the tracking performance up to 80% compared to a first order DSMC under sampling and model uncertainties.Comment: 6 pages, 6 figures, 2017 American Control Conferenc

Recognizing ourselves and each other through art journaling

One of the best ways to connect with others is to create and share with them. Using art journaling practices, we will reflect on our identities, create art based on those identities, and take a gallery walk to observe and appreciate the diversity of identifications in the room. We’ll then brainstorm ways this kind of activity could be meaningfully used in clubs, classrooms, or other groups to foster empathy, celebrate diversity, and encourage connection

Jesus as shepherd in the gospel of Matthew

The aim of this thesis is to demonstrate that Matthew and those who first received and transmitted Matthew's Gospel during the late first century believed that Jesus was the righteous and royal Shepherd-Messiah of Israel, the Son of David. Matthew also believed that Jesus was the true teacher and interpreter of the law who could give definitive leadership and guidance to Israel in the aftermath of the Jewish war. Matthew's Gospel was written sometime during the last quarter of the first century, during the formative period of early Judaism. In this context, Matthew presented Jesus as the defining figure for the future of Israel. Jesus, as the righteous royal shepherd, will provide the authoritative understanding of Judaism and her traditions. Jesus is the Messiah, the Son of David, and fulfils the promises of the Hebrew Scriptures. Therefore, as God's choice, he is the one to be turned to during this time of transition and change. As the Son of God and Messiah, he has been given God’s authority and is personally present with the community to give this guidance. One of the ways the evangelist demonstrates this is in his use of the shepherd metaphor in regard to Jesus. The ancient metaphor of shepherd was an image for leadership in the history of the tradition. The shepherd metaphor was often associated with the spiritual and national leaders in Israel, for example, Moses and David. According to Matthew qualities of this kind of shepherd leadership are now revealed in their fullness in Jesus, the Son of God. Jesus as Shepherd-Messiah is revealed both explicitly and implicitly in Matthew. He is revealed explicitly in the shepherd texts of Matthew and implicitly in the Gospel through the literary and typological correspondences in the history of Israel. The shepherd metaphor has a long history both inside and outside Israel’s tradition. Kings and rulers of many types were referred to as shepherds. In the thesis, the metaphor IS explored in the Ancient Near East generally, the biblical tradition, second Temple Judaism, the Dead Sea Scrolls and Philo. The shepherd metaphor was also used to describe evil, false or abusive rulers and leaders. In Israel's tradition this false shepherd metaphor became especially prominent in the exilic and post-exilic prophets. After the time of the exile, messianic hopes grew. The shepherd metaphor became associated with these messianic expectations. Other relevant texts from Rabbinic Judaism and Greco-Roman sources are also considered. In light of this social and historical background, the intertextual and narrative implications of Matthew's use of the shepherd motif will be investigated in relation to his christological concerns. Finally, the shepherd metaphor as it is applied to 'Jesus as shepherd' is thoroughly examined in regard to the Gospel of Matthew. It is the intention of this thesis therefore to make a contribution concerning Matthew's use of the shepherd metaphor in the wider context of Matthean Christology