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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
61

Die drahtlose Telegraphie im deutschen und internationalen Verkehrsrecht : mit besonderer Berücksichtigung des internationalen Vertrags vom 3. november 190 /

Landsberg, Alfred, January 1900 (has links)
Thesis (doctoral)--Universität Marburg, (1909?). / Includes bibliographical references (p. [7]-8).
62

Dynamic threshold call admission control policy of multi-service wireless cellular networks : a statistical approach /

Keung, Yik. January 2004 (has links)
Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2004. / Includes bibliographical references (leaves 80-81). Also available in electronic version. Access restricted to campus users.
63

Three essays on bill-and-keep payment mechanisms between communication networks

Lee, Jae-Young, Sibley, David S. January 2004 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2004. / Supervisor: David S. Sibley. Vita. Includes bibliographical references. Also available from UMI.
64

Local measured telephone service toward a balanced perspective /

Crownhart, Jean Ann. January 1982 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1982. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 59-61).
65

The Federal Communications Commission and competition in the telephone industry an analysis of the Specialized Common Carrier Case.

Greenberg, Edward Mark, January 1976 (has links)
Thesis (M.A.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
66

Open- and closed-ended questions about economic motivations in a national telephone survey analysis using the SPSS Text Analysis software /

Dorssom, Michael. January 2008 (has links)
Thesis (M.A.)--University of Wyoming, 2008. / Title from PDF title page (viewed on June 28, 2009). Includes bibliographical references (p. 77-78).
67

Heuristic models for serviceman routing in the telephone industry

Feder, Terry Lee, January 1900 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1969. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
68

Desenho de equipamento no Estado Novo-as estações de correio do plano geral de edificações

Bártolo, Carlos Humberto Mateus de Sousa January 1998 (has links)
No description available.
69

Telephone interference caused by harmonics and unbalance in power lines

Paul, Mariam 12 September 2012 (has links)
M.Ing. / Open-wire telecommunications were developed in the 19th and early 20th centuries without any consideration of the deleterious effects of power lines; compatibility problems were later caused by the proximity of power lines and telephone lines. The coexistence of such systems requires careful planning in terms of energy coupled to the telephone lines; this induction can cause interference, as well as dangerous overvoltages in telephone circuits, and requires detailed studies of the effects of coupling between high voltage lines and telephone systems to be done. In terms of inductive co-ordination in South Africa, the minimum separation distances between high voltage power lines and communication systems are calculated only for power frequency and lower order harmonics (up to the 13th). The aim of the study was to explore the agreement between theory and measurement for frequencies from 50 Hz to the high order harmonic range of 4 kHz; this makes it possible to extend existing methods for predicting compatible separations to cases where high order harmonics (up to the 73rd) are present (balanced and unbalanced) on a 132 kV power line feeding a large aluminium smelter plant.
70

The psychometric equivalency of scores from a web-based questionnaire administered via cellphone versus desktop computer

Edwards, John Francis 03 May 2008 (has links)
This study investigates the psychometric issues and viability of cellphone-based-testing, a novel test administration modality whereby test-takers use a cellphone to respond to items on a web-based assessment. The study explored mode-dependent differences in scores from a web-based version of the Self-Monitoring Scale (SMS) administered across two modalities: desktop computer and cellphone. The selection of the SMS was based on several pre-established criteria. The instrument was simple and brief. Its text-based items included true/false response categories. Its rights of use fell under public domain and it had been previously validated for online administration. The study includes a comprehensive overview of recent literature related to the topic of psychometric equivalency and incorporates numerous methodological approaches to determine test score equivalence, including: comparisons of central tendency, dispersions, and rank order; the Kolmogorov-Smirnov test of equal score distributions; the Pitman procedure for detecting differences in reliability coefficients; a confirmatory factor analysis of the equality of factor structures using LISREL; and an analysis of differential item functioning based on item response theory using BILOG-MG. The study employed a counterbalanced repeated measures design whereby 234 participants took an 18-item web-based version of the SMS using a desktop computer and/or a cellphone. The psychometric equivalency of scores from the two modes of administration was analyzed. All statistical comparisons provided overwhelming support for one general conclusion: There were no mode-dependent differences in scores on the web-based version of the SMS when administered by desktop computer versus cellphone. The study also explored participants’ attitudes toward using cellphones as a test-taking tool. The participants correctly anticipated that their scores would not be affected by using a cellphone, but they categorically rated the cellphone as less enjoyable, more difficult, and more cumbersome than a desktop computer. However, one cannot ignore the tendency of our modern society for being obsessed with information on demand. As cellphone technology continues to improve and the text-messaging generation begins to influence the field of educational and psychological measurement, cellphone-based-testing will likely become an accepted standard for both academic and clinical practice.

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