PubMed · 5546607
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H Fish. 1971-03-20. River quality management.. https://pubmed.ncbi.nlm.nih.gov/5546607/
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This work is based on former investigations describing the similarity between the distribution of MS-frequency and solar particle rays. The analysis of the prevalence values shows clearly that the global MS-frequency is closer related to the geomagnetic than to the geographic latitude. This relation is best described by a Gaussian curve: in temperate latitudes the MS-frequency increases rapidly in pole direction and decreases again in pole-proximity. The MS-distribution shows a spatial relation to the distribution of solar particle rays and geomagnetic activity and to the external radiation belt of the earth. Further considerations are being made including the 11-year-sun-cycle.
Children with nonorganic failure to thrive (NOFTT) comprise a population at risk for small stature, poor growth, slower development, and lower intellectual outcomes. These children are often seen in the Women, Infants, and Children Supplemental Nutrition Program (WIC) and child health clinics and in caseloads of high-risk families. Public health nurses may not be sure how to intervene in the problem of NOFTT because of its multifactorial etiology. A model of nursing care that addresses the many factors that affect the development of NOFTT can enable the public health nurse to appropriately care for the child with NOFTT. The Eco-Epi model, a combination of human ecology and epidemiology, is a conceptual model that can provide a framework for the public health nurse to plan interventions. Even though children with NOFTT are the target population for this model, it can be applied to other public health nursing populations at risk for multifactorial problems. In the Eco-Epi model, the epidemiological concepts of agent (food), host (child), and environment (home) are examined in the context of the microsystem (parent-child interaction, daily activities of the family), the mesosystem (interactions between different environments), and the exosystem (the child's community). The concepts of microsystem, mesosystem, and exosystem are from the theory of human ecology. Examples of how the model works to assess a family and design interventions are provided.
Relatively little attention has been paid to the role of human perception and judgment in ecological risk management. This paper attempts to characterize perceived ecological risk, using the psychometric paradigm developed in the domain of human health risk perception. The research began by eliciting a set of scale characteristics and risk items (e.g., technologies, actions, events, beliefs) from focus group participants. Participants in the main study were 68 university students who completed a survey instrument that elicited ratings for each of 65 items on 30 characteristic scales and one scale regarding general risk to natural environments. The results are presented in terms of mean responses over individuals for each scale and item combination. Factor analyses show that five factors characterize the judgment data. These have been termed: impact on species, human benefits, impact on humans, avoidability, and knowledge of impacts. The factor results correspond with initial expectations and provide a plausible characterization of judgments regarding ecological risk. Some comparisons of mean responses for selected individual items are also presented.