15,246 research outputs found
Muscular power (upper and lower body) and performance in the hammer throw
No full textThis file was last viewed in Adobe Reader 7.0The relationship between upper body power, lower body power, and performance
in the hammer throw was studied. At a late season NCAA track and field meet, nine
athletes from Division III universities, with at least one year of experience in throwing
the hammer, were the subjects for this research. Within one hour after each of the
subjects completed all their competitions for the day, including the hammer throw, they
performed the standard Wingate test on a Monarch cycle ergometer and a modified
Wingate test on a modified cycle ergometer to determine muscular power in both the
lower and upper body respectively. Data was then analyzed in Microsoft Excel’s
spreadsheet and software. A correlational analysis was completed to determine the
relationship of the mean differences (within each gender grouping) between performance and PR, performance and R-total (standard and modified Wingate), performance and peak anaerobic power (W/kg) (standard and modified Wingate), and anaerobic capacity (W/kg) (standard and modified Wingate). Statistical levels of significance were determined at the 5% level.
From the women’s results, correlations of statistical significance at the 5% level were found with performance and PR (0.977), performance and standard Wingate R-total (0.698), performance and standard Wingate Peak AnC (0.7003), and performance and standard Wingate Rel AnC (0.7666). Correlations were not significant between performance and all three modified Wingate results: R-total (0.2738), Peak AnC (0.3288), and Rel AnC (0.2875).
From the men’s results, correlations of statistical significance at the 5% level
were found with performance and PR (0.944), performance and standard Wingate R-total (0.804), performance and standard Wingate Peak AnC (0.6833), performance and
standard Wingate Rel AnC (0.7666). The correlation of performance and modified
Wingate R-total (0.580) was also statistically significant, but the relationship was weak. Correlations were not significant between performance and the remaining modified Wingate results: Peak AnC (0.4287) and Rel AnC (0.2161).
The correlations between performance and R-total, Rel Peak AnP, and Rel AnC
for the standard Wingate, were very strong for both the female and male subjects. The
modified Wingate, upper body test, only moderately correlated performance to R-total for the male subjects. This study indicated that the desired power for throwing the hammer related strongly to lower body power. This tends to suggest that lower body power would be a better predictor of current performance, and that future performance would be greatly influenced by training the lower body for higher power outputs
A. J. Hammer, Toledo, Ohio [approximately 1895]
No full textPhotograph of A. J. Hammer, physician. The photo dates around 1895. Terms associated with the photograph are: Hammer, A. J. | Physicians | Physicians--1890-1900. | Suits (Clothing) | Bow tie
Portrait of David J. Gordon, 15/12/11 [picture] /
No full textTitle from signature on mount.; Condition: Good.; Inscriptions: "David J. Gordon, 15/12/11" --Signed in ink lower centre. "Hammer & Co., Adelaide" --Printed lower right corner
Do Chimpanzees Use Weight to Select Hammer Tools?
No full textThis study was financially supported by a Japan Society for the Promotion of Science Predoc Grant (http://www.jsps.go.jp/english/e-summer/index.html) to Cornelia Schrauf. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.The extent to which tool-using animals take into account relevant task parameters is poorly understood. Nut cracking is one of the most complex forms of tool use, the choice of an adequate hammer being a critical aspect in success. Several properties make a hammer suitable for nut cracking, with weight being a key factor in determining the impact of a strike; in general, the greater the weight the fewer strikes required. This study experimentally investigated whether chimpanzees are able to encode the relevance of weight as a property of hammers to crack open nuts. By presenting chimpanzees with three hammers that differed solely in weight, we assessed their ability to relate the weight of the different tools with their effectiveness and thus select the most effective one(s). Our results show that chimpanzees use weight alone in selecting tools to crack open nuts and that experience clearly affects the subjects' attentiveness to the tool properties that are relevant for the task at hand. Chimpanzees can encode the requirements that a nut-cracking tool should meet (in terms of weight) to be effective.Peer reviewe
Oral history interview with Carl Hammer
No full textTranscript, 71 pp. Audio file available at http://purl.umn.edu/94971Hammer reviews his career in the computing industry, including his work for RCA, Sperry, and Sylvania. He begins with his entry into data processing at the Columbia University T. J. Watson Scientific Computing Laboratory and his work under Paul Lazarsfeld as a research associate at the Bureau of Applied Social Research. He turns next to his employment beginning in l950 at the Franklin Institute. He discusses the industrial applications of computers, and collaborations between the Franklin Institute and the government. From 1955 through 1957 Hammer headed the European Univac Computing Center. He discusses interactions with U.S. computer professionals, the peculiarities of installing computers in Europe, and the differing effect of computers on institutions in Europe and the U.S. He reviews Sperry's merger with Remington Rand and the changes in marketing and other operations after the merger. He cites these changes as his reason for leaving Sperry to work for Sylvania on his return from Europe in 1957. Sylvania's MOBIDIC computer and the ballistic missile early warning system are described in detail. In 1959 Hammer joined the Surface Communication Division of RCA. He discusses the in-fighting at RCA after John L. Hammer became president in 1960, the resulting demise of RCA's computer operations, and his own return to Univac in 1962.Hammer, Carl, 1914-2004. (1983). Oral history interview with Carl Hammer. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/107344
Blue Alphabet quilt, by Henrietta C. Hammer Astroth
No full textImage of Alphabet quilt created circa 1920 by Henrietta C. Hammer Astroth. Also includes questionnaires describing the quilt completed by Alice Lafferty Astroth as part of the Utah Quilt Guild\u27s documentation days held from 1988-1994. This quilt was made in St. Louis, Missouri. It was a gift for Astroth\u27s grandson, Frederick W. Astroth, Jr
William J. Hammer and Wilbur Wright
No full textWilliam J. Hammer and Wilbur Wright surrounded by spectators.https://corescholar.libraries.wright.edu/special_ms1_photographs/1595/thumbnail.jp
William J. Hammer and Wilbur Wright
No full textWilliam J. Hammer and Wilbur Wright standing inside the hangar.https://corescholar.libraries.wright.edu/special_ms1_photographs/1594/thumbnail.jp
William J. Hammer and Wilbur Wright
No full textA headshot of William J. Hammer and Wilbur Wright.https://corescholar.libraries.wright.edu/special_ms1_photographs/1593/thumbnail.jp
Sri Ram - Forschung, Distanz und Rollenspiel
No full textPfaff-Czarnecka J. Sri Ram - Forschung, Distanz und Rollenspiel. In: Beck C, ed. Fremde Freunde. Gewährsleute der Ethnologie. Wuppertal: Hammer; 2005: 52-63
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