(9,521 - 9,540 of 10,082)
Pages
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Title
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Empirical Modeling of Public Safety to Voice Traffic to Aid Emergency Capacity
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Creator
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Taher, Tanim, Bacchus, Roger
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Date
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2012-04-18, 2012-04-18
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Description
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An RF measurement system with high time resolution is implemented to determine the statistical characteristics of various channels in the Land...
Show moreAn RF measurement system with high time resolution is implemented to determine the statistical characteristics of various channels in the Land Mobile Radio bands. The applicability of simple statistical models to the observed data is investigated, as well as their validity over short and long periods of time. The results show that the statistics of the idle and holding times of communication on these channels vary significantly over time and demonstrate daily periodicity, requiring non-stationary models to accurately represent them. Over short durations of time however, conventional distributions such as the exponential and lognormal may adequately characterize the properties of these quantities, allowing convenient and compact representations of the data. Results based on empirical data are presented to quantify the probability of stationarity for voice traffic within a time span of given length. The findings are useful for network planning or streamlining, network simulation and modeling, and investigation of dynamic spectrum access.
Sponsorship: National Science Foundation, Federal Communications Commission, Motorola, Cleversafe, Roberson & Associates LLC
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Title
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Hewlett-Packard Labs, Palo Alto, California
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Description
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Photograph of the Hewlett-Packard Labs building in Palo Alto, California, featuring two mosiac murals by Mary Henry on either side of the...
Show morePhotograph of the Hewlett-Packard Labs building in Palo Alto, California, featuring two mosiac murals by Mary Henry on either side of the building entryway. Photograph identified as a work for hire or commission for Hewlett Packard by the donor. Date of photograph unknown.
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Collection
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Mary Dill Henry Papers, 1913-2021
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Title
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Mary Heny with an unidentified mural, 1956
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Date
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1956
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Description
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Photograph of artist Mary Dill Henry with an in-progress mural. Content description from Jeffrey Thomas Fine Art checklist for exhibition at...
Show morePhotograph of artist Mary Dill Henry with an in-progress mural. Content description from Jeffrey Thomas Fine Art checklist for exhibition at Hauser & Wirth Institute: "Archival photograph of Mary working on mural - 1956 - Between 1955 and 1962, Mary worked at numerous and highly miscellaneous free-lance assignments, from painting a billboard for a poodle kennel to choosing paints and wallpapers for an expensive subdivision. - For Maxwell's Coffee House restaurant in Los Angeles, she painted a series of small murals showing the coffee-growing process; a large mural for the Santa Clara County Courthouse depicted episodes from local history. - Toward the end of this period, her work grew more abstract, culminating in her large-scale mosaics for the entrance to the new Hewlett-Packard plant in Los Alto Hills, which is still exquisite and intact to this day." Title of mural unknown. Photographer unknown.
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Collection
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Mary Dill Henry Papers, 1913-2021
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Title
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Mary Henry, 1938
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Date
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1938
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Description
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Photograph of Mary Dill Henry taken in the same year that she graduated with a Bachelors of Fine Arts degree from the California College of...
Show morePhotograph of Mary Dill Henry taken in the same year that she graduated with a Bachelors of Fine Arts degree from the California College of the Arts (then called the California School of Arts and Crafts). Inscription on verso reads "Mary Dill - 1938 C.C.A.C. Oakland." Photographer unknown.
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Collection
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Mary Dill Henry Papers, 1913-2021
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Title
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Mary Henry, 1938
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Date
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1938
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Description
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Photograph of Mary Dill Henry taken in the same year that she graduated with a Bachelors of Fine Arts degree from the California College of...
Show morePhotograph of Mary Dill Henry taken in the same year that she graduated with a Bachelors of Fine Arts degree from the California College of the Arts (then called the California School of Arts and Crafts). Henry's inscription on verso reads "Graduation from Calif. College of Arts + Crafts in June 1938. Oakland. Mary Henry - or Dill, as my name was then." Photographer unknown, stamp on recto reads "McCullagh."
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Collection
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Mary Dill Henry Papers, 1913-2021
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Title
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Technology Center of Tomorrow in the Making Today
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Date
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1947
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Description
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Insert included with Technology Center Today and Tomorrow (see http://hdl.handle.net/10560/islandora:1011681), a fundraising booklet for...
Show moreInsert included with Technology Center Today and Tomorrow (see http://hdl.handle.net/10560/islandora:1011681), a fundraising booklet for distribution to businesses and entrepreneurs soliciting funds for the development of the new campus buildings and academic programs of Illinois Institute of Technology.
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Collection
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Fund Raising Brochures collection, 1941-1950
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Title
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Jay Doblin with his People Chair, 1960
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Date
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1960
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Description
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Jay Doblin, then Dean of the Institute of Design, poses with his People Chair, and alumnimun chair designed as part of a campaign sponsored by...
Show moreJay Doblin, then Dean of the Institute of Design, poses with his People Chair, and alumnimun chair designed as part of a campaign sponsored by the Alcoa Corporation. Photographer and copyright holder unknown, assumed to be Alcoa.
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Collection
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Institute of Design records, 1942-2001
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Title
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Konrad Wachsmann with Institute of Design students Maurene Strug and Shirley Courtois, Illinois Institute of Technology, Chicago, Illinois, ca. 1954-1959
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Date
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1954-1959
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Description
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From attached caption: "Konrad Wachsmann, professor of advanced building research at the Institute of Design of Illinois Institute of...
Show moreFrom attached caption: "Konrad Wachsmann, professor of advanced building research at the Institute of Design of Illinois Institute of Technology, Chicago, explains principles of space-frame construction to students Maurene Strug and Shirley Courtois. A model of an open-air music shelter, designed b y an Illinois Tech graduate student for his master's thesis, and based on space-frame construction, is shown on the table." Photographer unknown. Date of photograph is unknown. Date range listed is approximate.
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Collection
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Institute of Design records, 1937-ca. 1962
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Title
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Design Direction, Book 1
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Date
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1946
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Description
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Design Direction was Mary Henry's 1946 thesis for her graduate degree at the Institute of Design. The project, completed in collaboration with...
Show moreDesign Direction was Mary Henry's 1946 thesis for her graduate degree at the Institute of Design. The project, completed in collaboration with Emerson Woelffer, was based on a class for beginning students taught by Woelffer at ID. The course consisted of 18 exercises exploring the basic elements of design, each of which is represented in Henry's Design Directions. Book 1 consists of the design exercises themselves, Book 2 contains the textual component of the project.
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Collection
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Mary Dill Henry Papers, 1913-2021
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Title
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Mary Henry at the Institute of Design, Chicago, Illinois, 1945-1946
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Date
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1945-1946
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Description
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Photograph of Mary Henry working on a metal sculpture as a student at the Institute of Design in 1945 or 1946. Inscription on verso reads ...
Show morePhotograph of Mary Henry working on a metal sculpture as a student at the Institute of Design in 1945 or 1946. Inscription on verso reads "Mary Henry at the Institute of Design in Chicago - Oak + Rush Streets - 1945-1946. I am constructing a metal sculpture in Nathan Lerner's workshop." Photographer unknown. The color in this photograph appears to be blue ink that has bled onto the photo from another source.
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Collection
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Mary Dill Henry Papers, 1913-2021
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Title
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The Snow Cruiser
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Date
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1939
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Description
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Cover of a glossy magazine published by the Armour Research Foundation on the Snow Cruiser Antarctic Expedition. The Snow Cruiser was designed...
Show moreCover of a glossy magazine published by the Armour Research Foundation on the Snow Cruiser Antarctic Expedition. The Snow Cruiser was designed by Armour Research Foundation Scientific Director Thomas C. Poulter, constructed by ARF, and taken on Richard Byrd's third Antarctic expedition.
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Collection
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Kemper Library William H. Hyde, Jr. records, 1943-1971
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