نتایج جستجو برای: environmental factor
تعداد نتایج: 1189057 فیلتر نتایج به سال:
Background: Several environmental and psychosocial risk factors are known for adolescent smoking as the single cause of preventable diseases and premature death. This cross-sectional study aimed to determine the prevalence of cigarette smoking, socio-demographic factors associated with cigarette smoking (age, education level, parents’ job, and family’s socioeconomic statues), and the role of fa...
Today, with increasing human population and more usage of natural resources is cause of needing to environmental management more than before. Global experiments show that appearance of unsustainability environmental Indexes is the cause of undesirable natural resources management and harmful effects on environmental. Thus attention to sustainable development principle that is based on advantage...
This paper studies how simultaneously liberalizing trade and tightening environmental policy affect welfare in a second-best world. We consider a three-good two-factor small open economy. We allow for non-tradables and for market power in the export market. The government is constrained to balance its budget at all times through distortionary taxes: a given income transfer has to be financed ou...
background: recently, we introduced solar related geomagnetic disturbances (gmd) as a potential environmental risk factor for multiple sclerosis (ms). the aim of this study was to test probable correlation between solar activities and gmd with long-term variations of ms incidence. methods: after a systematic review, we studied the association betwee n alterations in the solar wind velocity (vsw...
The purpose of this paper is to investigate the social, economic, and environmental effects of drought from the viewpoint of villagers, with the structural equation modeling approach. The purpose of this study is of applied research type, and is essentially a descriptive-correlation research. The population of the study, 1762 heads of households and sample size were determined according to Coch...
The purpose of this study was to design and evaluate a human resource empowerment model for the productivity of the National Iranian Gas Company (NIGC), which was done with a combined approach. This research is a survey in terms of purpose, and applied in terms of its nature, and in terms of paradigm, it is a combined-exploratory research. The data collection method has been library and field s...
this thesis aims at putting together two of the vestest areas of study there is in humanities: bioethics and literature. the two novels in question, oryx and crake and the year of the flood, are considered as some of the most succssful examples of spculative fiction. in these novels the biological and environmental issues raised as looked at from a bioethics point of view.
چکیده ندارد.
Objective: The purpose of this study was to identify affecting factors on students’ environmental protection behavior (SIPB). Methods: Statistical population of this research consisted of 1480 students in Alborz agricultural technical higher education centers. A stratified random sampling method was used to select 145 student applying Cochran's formula. The main tool to collect data was a resea...
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