![]() With amplified warming and record sea ice loss, the Arctic is the canary of global warming. Tokinaga, Hiroki Xie, Shang-Ping Mukougawa, Hitoshi Ford Motor Company, Cleveland Branch Assembly Plant, Euclid Avenue & East 116 th Street, Cleveland, Cuyahoga County, OHĮarly 20 th-century Arctic warming intensified by Pacific and Atlantic multidecadal variability Photo owned by the Cleveland Public Library. Photocpy of early 20 th century photograph, looking east, of east facade of assembly building on Euclid Ave. Photocpy of early 20 th century photograph, looking east, of. Ford Motor Company, Cleveland Branch Assembly Plant, Euclid Avenue & East 116 th Street, Cleveland, Cuyahoga County, OHġ. Photograph owned by the Cleveland Public Library. Photocopy of early 20 th century photo, showing the Euclid Avenue facade of the branch assembly building. Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes SurveyĢ. Photocopy of early 20 th century photo, showing the Euclid. In this article an updated version of an early- 20 th-century transverse wave machine is discussed. Over the years numerous mechanical devices have been devised to show the propagation of both transverse and longitudinal waves (Ref. Physics students often have problems understanding waves. For Permissions, please email: an Early- 20 th-Century Wave MachineĮRIC Educational Resources Information Centerĭaffron, John A. The paper concludes the lack of clarity around these issues contributed to health promotion disappearing in the mid- 20 th century and thus resolution of these would be worthwhile for the continuation and development of health promotion as a discipline into the 21st century. In doing so, it argues a number of factors influenced the changing conceptualization and utilization of health promotion during the first half of the 20 th century, many of which continue to present times, including issues around what health promotion is and what it means, ongoing tensions between individual and collective actions, tensions between specific and general causes of health and ill health, and between expert and societal contributions. This paper traces the conceptualizations of health promotion during the 1920s, attempts to operationalize health promotion in the 1930s resulting in a narrowing of the concept to one of health education, and the disappearance of the term from the 1940s. However, the lineage between these two time periods is not clear, and indeed, this paper supports contentions health promotion has a disrupted history. This historical analysis of the term 'health promotion' during the early 20 th century in North American journal articles revealed concepts that strongly resonate with those of the 21st century. Early 20 th century conceptualization of health promotion.
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