Divergent results from ecologic and analytic studies on residential radon and lung cancer have created uncertainty in terms of risk assessment. The authors performed concurrent analyses on individual and aggregated data from the nationwide case-control study of residential radon and lung cancer in Sweden. For data aggregated on the county level, the ecologic excess relative risk estimates per 1...

Ecologic studies of cancer screening examine cancer mortality rates in relation to use of population screening. These studies can be confounded by treatment patterns or influenced by choice of outcome and time horizon. Interpretation can be complicated by uncertainty about when mortality differences might be expected. The authors examined these issues in an ecologic analysis of prostate-specifi...

Given the large energy consumption of energy heating for residential and commercial use in the world, optimising heating systems makes sense, both from an ecologic and an economic point of view. Therefore, this study evaluates five different space heating systems through a case study on a new housing project. The assessment comprises both economic factors (payback period as compared to a refere...

Contemporary agriculture is a fertile ground for the effective use of economic and mathematical models, which can be evaluated to unwind several problems with characteristic optimization features: multiple solution opportunities freedom choice, limited production resources, efficiency valuation. The presented study aims develop model optimal crop structure under existing weather risks in agricu...

backgroundseveral studies have examined the relationship between human development index (hdi) and various health outcomes. the aim of this study was to investigate the relationship between hdi, and infant mortality rate, mortality rate of children under one year and under 5 years, maternal mortality rate, and total fertility rate.materials and methodsin this ecologic study, data on hdi, total ...

This article presents an integrated ecologic and economic model to study landscape and land use change, using the Spatial Analysis Modelling Tool (SAMT). The study involves integrating these models to analyse landscape and land use changes in Quillow region of North East Germany. Different price and premium scenarios were implemented to indicate the likely effect of policy change. Results of th...

This study presents the results referring to the analysis of QuickBird high resolution satellite images to establish patterns associated to the landscape dynamics in bamboo forests at the Intervales Park (São Paulo State, Brazil), considering its ecologic aspects. The methodology was based on visual image interpretation, as a preliminary step for digital processing. The results show the possibi...