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Wyszukujesz frazę "Hughes, David" wg kryterium: Wszystkie pola


Wyświetlanie 1-4 z 4
Tytuł:
Wczesna historia telegrafii drukowanej
The early history of printing telegraphy
Autorzy:
Dąbrowski, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2189563.pdf
Data publikacji:
2022-06-30
Wydawca:
Polska Akademia Nauk. Instytut Historii Nauki im. Ludwika i Aleksandra Birkenmajerów
Tematy:
telegraf drukujący
wychwyt
dalekopis giełdowy
drukarka giełdowa
teledrukarka
kółko czcionkowe
Royal Earl House
Alfred Vail
David Edward Hughes
printing telegraph
escapement
stock ticker
stock printer
teleprinter
typewheel
Opis:
In telegraph systems using the Morse code or other special alphabets, it is necessary to translate the message into such an alphabet (code) at input and turn it back into an open text, written in the alphabet used in the destination country, at output. As character encoding delays the flow of telegrams and leads to errors and distortions, innovators quickly started to seek solutions that would allow for transmitting and delivering the text of the message directly in a commonly used alphabet. The article focuses on their designs, ie printing telegraphs, not to be confused with teleprinters that only mark indentations on a moving paper tape. Its aim is to present the evolution of these devices in the early stage of their development, up until the 1930s, the time of accelerated advances in electromechanics, and compare them on the basis of historical technical specifications as seen from an engineer’s perspective. Through an extensive use of German reference sources, the article also specifies which solutions were being employed by the partitioning powers, especially Austria, in the Polish lands.
Źródło:
Analecta. Studia i Materiały z Dziejów Nauki; 2022, 31, 1; 85-102
1509-0957
Pojawia się w:
Analecta. Studia i Materiały z Dziejów Nauki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Occupational exposure to trichloroethylene and cancer risk for workers at the Paducah Gaseous Diffusion Plant
Autorzy:
Bahr, Debra E.
Aldrich, Timothy E.
Seidu, Dazar
Brion, Gail M.
Tollerud, David J.
Muldoon, Susan
Reinhart, Nancy
Youseefagha, Ahmed
McKinney, Paul
Hughes, Therese
Chan, Caroline
Rice, Carol
Brewer, David E.
Freyberg, Ronald W.
Mohlenkamp, Adriane M.
Hahn, Kristen
Hornung, Richard
Ho, Mona
Dastidar, Aniruddha
Freitas, Samantha
Saman, Daniel
Ravdal, Hege
Scutchfield, Douglas
Powiązania:
https://bibliotekanauki.pl/articles/2185472.pdf
Data publikacji:
2011-03-01
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
cohort study
gaseous diffusion plant
trichloroethylene
Healthy Worker Effect
Opis:
Objective: The Paducah Gaseous Diffusion Plant (PGDP) became operational in 1952; it is located in the western part of Kentucky. We conducted a mortality study for adverse health effects that workers may have suffered while working at the plant, including exposures to chemicals. Materials and Methods: We studied a cohort of 6820 workers at the PGDP for the period 1953 to 2003; there were a total of 1672 deaths to cohort members. Trichloroethylene (TCE) is a specific concern for this workforce; exposure to TCE occurred primarily in departments that clean the process equipment. The Life Table Analysis System (LTAS) program developed by NIOSH was used to calculate the standardized mortality ratios for the worker cohort and standardized rate ratio relative to exposure to TCE (the U.S. population is the referent for ageadjustment). LTAS calculated a significantly low overall SMR for these workers of 0.76 (95% CI: 0.72–0.79). A further review of three major cancers of interest to Kentucky produced significantly low SMR for trachea, bronchus, lung cancer (0.75, 95% CI: 0.72–0.79) and high SMR for Non-Hodgkin’s lymphoma (NHL) (1.49, 95% CI: 1.02–2.10). Results: No significant SMR was observed for leukemia and no significant SRRs were observed for any disease. Both the leukemia and lung cancer results were examined and determined to reflect regional mortality patterns. However, the Non-Hodgkin’s Lymphoma finding suggests a curious amplification when living cases are included with the mortality experience. Conclusions: Further examination is recommended of this recurrent finding from all three U.S. Gaseous Diffusion plants.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2011, 24, 1; 67-77
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
TEACHING AN OLD DOG NEW TRICKS: EFFECTIVE USE OF THE WORD PROCESSOR IN ESL CLASSROOMS
Autorzy:
Hughes, David
Powiązania:
https://bibliotekanauki.pl/articles/569146.pdf
Data publikacji:
2003
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej w Lublinie. IATEFL Poland Computer Special Interest Group
Źródło:
Teaching English with Technology; 2003, 3, 1; 25-40
1642-1027
Pojawia się w:
Teaching English with Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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