scholarly journals Channel catfish, Ictalurus punctatus , nutrition in the United States: A historical perspective

2019 ◽  
Vol 51 (1) ◽  
pp. 93-118
Author(s):  
Edwin H. Robinson ◽  
Menghe H. Li
Keyword(s):  
United States ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Historical Perspective ◽  
The United States

Conservation, Ecology, and Management of Catfish: The Second International Symposium

2011 ◽  
Keyword(s):  
United States ◽  
Body Condition ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Aeromonas Hydrophila ◽  
Condition Index ◽  
The United States ◽  
Southern United States ◽  
Conservation Ecology ◽  
Columnaris Disease

<em>Abstract</em>.—U.S. Game and Fish agencies and farm-pond owners throughout the United States use commercially produced channel catfish <em>Ictalurus punctatus </em>fingerlings transported from the southern United States for supplemental stocking. We conducted six trials to examine whether pathogen load, body condition, and select environmental factors influence fingerling survival following transport and cage stocking. Fingerlings were sampled prior to stocking and weekly for the following 3 weeks. Weights and lengths were measured, and a relative condition index was used to quantify body condition. Skin scrapings and gill clippings were examined microscopically for pathogens, and posterior kidney was assayed for <em>Aeromonas hydrophila</em>. Mortality was either less than 10% (four trials) or catastrophic (two trials). A Columnaris disease epizootic was associated with ~50% mortality in one trial, and a red sore disease epizootic was associated with ~80% mortality in another. Body condition or other pathogens, present initially or acquired in study ponds, were not associated with high mortality. The first week appears to be critical for the survival of channel catfish fingerlings following transport.

A HISTORICAL PERSPECTIVE ON THE AUDITOR'S ROLE: THE EARLY EXPERlENCE OF THE AMERICAN RAILROADS

1983 ◽  
Vol 10 (1) ◽  
pp. 69-86 ◽  
Author(s):  
James L. Boockholdt
Keyword(s):  
United States ◽  
Nineteenth Century ◽  
Internal Control ◽  
Historical Perspective ◽  
The United States ◽  
Advisory Services ◽  
Audit Independence ◽  
Inherent Part

The paper explores the origins of the auditing profession in the United States. It is suggested that the development of the audit function in this country can be traced to reporting by internal and shareholder auditors in the American railroads during the middle of the nineteenth century. Evidence is presented that a recognition of the need for audit independence existed, and that the provision of advisory services and reports on internal control by American auditors have been an inherent part of the auditor's role from that time.

scholarly journals Medical Education From a Theory–Practice–Philosophy Perspective

2021 ◽  
Vol 8 ◽  
pp. 237428952110102
Author(s):  
Susan A. Kirch ◽  
Moshe J. Sadofsky
Keyword(s):  
United States ◽  
Medical Education ◽  
Curriculum Design ◽  
Historical Perspective ◽  
Curriculum And Instruction ◽  
Medical Curriculum ◽  
Educational Theory ◽  
The United States ◽  
History Of ◽  
How People Learn

Medical schooling, at least as structured in the United States and Canada, is commonly assembled intuitively or empirically to meet concrete goals. Despite a long history of scholarship in educational theory to address how people learn, this is rarely examined during medical curriculum design. We provide a historical perspective on educational theory–practice–philosophy and a tool to aid faculty in learning how to identify and use theory–practice–philosophy for the design of curriculum and instruction.

scholarly journals The Regional Snowfall Index

2014 ◽  
Vol 95 (12) ◽  
pp. 1835-1848 ◽  
Author(s):  
Michael F. Squires ◽  
Jay H. Lawrimore ◽  
Richard R. Heim ◽  
David A. Robinson ◽  
Mathieu R. Gerbush ◽  
...  
Keyword(s):  
United States ◽  
Data Center ◽  
Historical Perspective ◽  
The United States ◽  
Climatic Data ◽  
National Climatic Data Center ◽  
Impact Scale ◽  
Population Information ◽  
Regional Index ◽  
The Impact

This paper describes a new snowfall index that quantifies the impact of snowstorms within six climate regions in the United States. The regional snowfall index (RSI) is based on the spatial extent of snowfall accumulation, the amount of snowfall, and the juxtaposition of these elements with population. Including population information provides a measure of the societal susceptibility for each region. The RSI is an evolution of the Northeast snowfall impact scale (NESIS), which NOAA's National Climatic Data Center began producing operationally in 2006. While NESIS was developed for storms that had a major impact in the Northeast, it includes all snowfall during the lifetime of a storm across the United States and as such can be thought of as a quasi-national index that is calibrated to Northeast snowstorms. By contrast, the RSI is a regional index calibrated to specific regions using only the snow that falls within that region. This paper describes the methodology used to compute the RSI, which requires region-specific parameters and thresholds, and its application within six climate regions in the eastern two-thirds of the nation. The process used to select the region-specific parameters and thresholds is explained. The new index has been calculated for over 580 snowstorms that occurred between 1900 and 2013 providing a century-scale historical perspective for these snowstorms. The RSI is computed for category 1 or greater storms in near–real time, usually a day after the storm has ended.

Historical Perspective of Technoethics in Education

2009 ◽  
pp. 651-667 ◽  
Author(s):  
J. José Cortez
Keyword(s):  
United States ◽  
Common Good ◽  
Historical Perspective ◽  
The United States ◽  
Public Schooling ◽  
Good Citizenship ◽  
Technological Developments ◽  
History Of ◽  
Democratic Principles ◽  
Professional Teaching

Fundamental democratic principles and values that guide our social relationships have been important concerns in the evolution of this nation’s system of formal public schooling. With its increased use and reliance on advanced technologies, education faces some fundamental challenges that have potentially far-reaching implications for educational institutions, professional teaching strategies and practices, and student learning. This chapter explores the topic of technoethics as an applied field of ethics and research, viewed from a historical perspective of education in the United States and its embrace of technology. The underlying intent is to inform the readers’ understanding of the basic concepts of common good, citizenship, and democratic values that are the underlying precepts associated with the history of public schooling in the United States. Additionally, the author discusses the increasingly critical need for educators to address the social and ethical dilemmas associated with new technological developments and their application to educational settings.

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