5,766 research outputs found

    A review of cryogenic testing performed by the thermochemical test branch, Manned Spacecraft Center in support of Apollo 13 and14

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    The Apollo 13 anomaly provided considerable impetus for a variety of types of cryogenic and ignition tests. The logic of the various test program designs, the test techniques, and their final impact upon the investigation findings are described. In addition, several test programs initiated to determine the thermal performance and general performance characteristics of the redesigned Apollo 14 cryogenic storage system are presented

    Effect of Wearing a Gas Collection Mask on Time to Exhaustion during the Bruce Protocol

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    Oxygen consumption (VO2) and carbon dioxide production (VCO2) are important to measure and analyze in exercise physiology and fitness testing. A respiratory gas collection mask (RGC) is required for measurement of VO2 and VCO2, but has been reported to cause respiratory symptoms and inhibit maximal performance in subjects. This study compared the performance of a graded maximal exercise text (GXT) while wearing a mask (MASK) and without wearing a mask (NO-MASK). Twelve adults performed the Bruce GXT under the two different conditions on two separate occasions in random order. Performance variables used in data analysis were time to exhaustion (TTE), peak heart rate (HRpeak), and rating of perceived exertion (RPE). Between MASK and NO-MASK, paired sample t-tests revealed significant differences in TTE (11.46 ± 1.45 v. 11.70 ± 1.62 min; p=0.017), but no differences in HRpeak (184.67 ± 12.88 v. 186.33 ± 11.59 beats·min-1; p=0.226) and RPE (8.25 ± 1.55 v. 8.42 ± 0.90; p=0.723). Because peak VO2 could not be measured during NO-MASK, predicted VO2, based on TTE, was calculated for both conditions. Post-hoc analysis revealed no significance between predicted VO2 for MASK versus NO-MASK (40.18 ± 6.06 v. 41.19 ± 6.74 ml·kg-1·min-1; p=0.017). Thus, while TTE was slightly longer while performing the GXT without a mask compared to with a mask, the impact this .24-min (14-s) difference had on predicted VO2max was not significant. From a practical standpoint, wearing a mask during a GXT does not hinder performance

    The Web Magazine 1976, March

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    The Web Magazine focuses on alumni news and campus events from Gardner-Webb College; now Gardner-Webb University. This issue discusses the events that will take place at the Alumni Banquet, names Thomas J. McGraw the new President of Gardner-Webb College, and recalls the success from the Northeastern United States Telethon that the Alumni Association held for the annual fund. It also informs readers on the upcoming trip to Switzerland, gives updates on the basketball team, and encourages more people to join the Alumni Coffee Club.https://digitalcommons.gardner-webb.edu/the-web/1080/thumbnail.jp

    Cologne During the Witch Hunts, 1627--1662

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    This thesis examined Cologne during the years that witchcraft persecution was the highest in the city, from 1627-1662. By using a microhistorical approach on primary sources it found that strained relationships were the chief causes of the accusations. This thesis also discovered that in Cologne, at least, all of those under the age of 30 confessed to witchcraft while all of those above the age of 30 denied the accusations. It did this by both statistical analysis of the questions asked of the accused as well as in depth analysis of the answers that the accused gave their judges

    The Web Magazine 1976, September

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    The Web Magazine focuses on alumni news and campus events from Gardner-Webb College; now Gardner-Webb University. This issue introduces Dr. Craven Edward Williams as the ninth President of Gardner-Webb College, announces that an alumni directory will soon be made available to alumni, and praises author James Sullivan for his new book. It also provides an update on the GW football team, recognizes alumni for their financial contributions for 1975-76, and announces two memorials that will be held for professors that passed away in 1976.https://digitalcommons.gardner-webb.edu/the-web/1082/thumbnail.jp

    Rejecting the Paradigm: Reimagining the Philosophy of Punishment To Address the Criminal Justice Crisis in Twenty-First Century America

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    Legal punishment has been subject to cacophonous debate and transformation throughout the history of American political and philosophical discourse. As a growing body of academic literature indicates a failure in the punitive techniques practiced by American institutions, the necessity for a precise diagnosis of such ailments paired with a new model addressing American concerns for reform remains increasingly pertinent. With due consideration to the previous recommendations of scholars, this paper illustrates the crisis in criminal justice currently felt in the United States. Through statistical, theoretical, and comparative analyses, existing alternatives are examined and an alternative fit to serve the United States’ social and political needs is sought. This paper seeks to connect past and present pitfalls with paradigmatic flaws afflicting the theoretical underpinnings of American criminal justice. Ultimately, a new set of principles is formed, providing renewed guidance for a more effective and just approach personalized to the American system’s prevailing disparities. Pragmatic models are illustrated, and policy strategies are made accordingly. Given the results of the examinations herein, the conclusion is met: upend the current paradigmatic requirements and reimagine the American philosophy of punishment or continue to see measures intending comprehensive reform fail

    Critical Information Technology on FPGAs through Unique Device Specific Keys

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    Field Programmable Gate Arrays (FPGAs) are being used for military and other sensitive applications, the threat of an adversary attacking these devices is an ever present danger. While having the ability to be reconfigured is helpful for development, it also poses the risk of its hardware design being cloned. Static random access memory (SRAM) FPGA\u27s are the most common type of FPGA used in industry. Every time an SRAM-FPGA is powered up, its configuration must be downloaded. If an adversary is able to obtain that configuration, they can clone sensitive designs to other FPGAs. A technique that can be used to protect FPGAs from these types of attacks is known as Digital Fingerprinting (DF). DF takes advantage of the manufacturing variability that naturally occurs in the integrated circuit fabrication process. If another factor can be introduced making the FPGA\u27s operation dependent on more than the design specified within its configuration and response to external outputs, we can defend against cloning. This solution would allow for an FPGA\u27s operation to be dependent on how the downloaded configuration interacts with the hardware itself. This research uses DF technology to create unique device specific keys for use as encryption keys or control values for polymorphic circuits to protect information on FPGAs

    The Web Magazine 1976, June

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    The Web Magazine focuses on alumni news and campus events from Gardner-Webb College; now Gardner-Webb University. This issue celebrates the golf team\u27s success gives updates on the campus happenings of GW, and announces the winner of the alumnus of the year award. It also announces that students at GW will now be able to earn a degree in medical technology through a partnership with Charlotte Memorial. Photos of business interns are featured, commencement is recalled, and the success of the golf team.https://digitalcommons.gardner-webb.edu/the-web/1081/thumbnail.jp
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