نتایج جستجو برای: guttman scaling
تعداد نتایج: 75767 فیلتر نتایج به سال:
BACKGROUND The Gateway Drug Theory suggests that licit drugs, such as tobacco and alcohol, serve as a "gateway" toward the use of other, illicit drugs. However, there remains some discrepancy regarding which drug-alcohol, tobacco, or even marijuana-serves as the initial "gateway" drug subsequently leading to the use of illicit drugs such as cocaine and heroin. The purpose of this investigation ...
abstract background: corrosion and scaling are of the most important characteristics of drinking water, affecting public health and water industry economy. the aim of the present study was to evaluate the corrosion and scaling potential of potable water supplied by saqqez rural water and wastewater company. materials and methods: this was a descriptive study conducted on 142 samples taken from ...
Background & purpose: One of the major factors in the quality of drinking water is corrosion and scaling. The aim of the present study was to evaluate corrosion and scaling potential of drinking water supply network in Juybar (A city in Iran). Materials and Methods: 60 samples of drinking water in distribution network were collected randomly in summer and autumn seasons and transferred into ...
Introduction: Corrosion and scaling are important factors affecting drinking water quality, causing health and economic problems. This study aimed to investigate the indicators of corrosion and scaling in Rafsanjan drinking water. Materials and Methods: The present descriptive cross-sectional study was conducted in winter 2018 and spring 2019 in Rafsanjan. The 56 samples were randomly taken fr...
AUTHOR Collins, Linda M.; tent, Clyde W. TITLE The Longitudinal Guttman Simplex: Applications to Health Behavior Data. SPONS ACENCY National inst. on Drug Abuse (DHEW/PHS), Rockville, Md. PUB DATE 24 Aug 85 NOTE 20p.; Paper presented at the Annual Convention of the American Psychological Association (93rd, Los Angeles, CA, August 23-27, 1985). PUB TYPE Reports Research/Technical (143) -Speeches...
This study investigated whether deviant pornography use followed a Guttman-like progression in that a person transitions from being a nondeviant to deviant pornography user. In order to observe this progression, 630 respondents from Survey Sampling International’s (SSI) panel Internet sample completed an online survey assessing adult-only, bestiality, and child pornography consumption. Responde...
Background and Objective: Water corrosion and scaling are known as destructive phenomenon of drinking water quality and water facilities. In this study, the groundwater tendency to corrosion or scaling in source water, water storage reservoirs and distribution system were studied. Simultaneous use of some qualitative and a quantitative index along with statistical analyses to assess the water s...
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