oroginal article tiller is a handy multi – a purpose tractor is used in agriculture. the noise emitted from tiller may be seriously affected auditory system users. the purpose of this study was to evaluate the exposure to noise in operators of this device. in this study 36cultivator tiller was examined. measurement of sound is based in iso 5131-1996 and iso 7216 standard and was conducted in in...

The acceptable exterior noise level from passenger cars is constantly decreasing through national and international regulations. Most recently, the acceptable level within the European Union has been lowered to 74 dB(A). To fulfill these demands, still more advanced measuring techniques have to be used in the development process and for troubleshooting. In this example, traditional measuring te...

The P600 component is part of the late components of Event-related Potentials (ERPs), which have been related to working memory (WM) mechanisms. The relation of psychiatric illnesses to deficits in WM may manifest itself as a differentiation at the level of the ERP scalp measurements. In the present work, in order to test the robustness of a classification system under various levels of Gaussia...

The acceptable exterior noise level from passenger cars is constantly decreasing through national and international regulations. Most recently, the acceptable level within the European Union has been lowered to 74 dB(A). To fulfill these demands, still more advanced measuring techniques have to be used in the development process and for troubleshooting. In this example, traditional measuring te...

Household-level agriculture-nutrition linkage (ANL) tends to be strong where food markets are imperfect. In such an environment, for cooking services may also Nutrition outcomes of household members, including intrahousehold inequality among women and children can depend on a household’s self-production services, provided both by labors, particularly women. Using the primary data in Tajikistan,...

BACKGROUND Most employed American women work during pregnancy and continue working through the month they deliver. Yet, few studies estimate the relationship between maternity leave taken during pregnancy and maternal health. We evaluate the association of antenatal leave (ANL) uptake with obstetric outcomes, assessing the potential role of protective and adverse selection pathways on this rela...

Introduction: Noise is an environmental stressor and can cause or exacerbate mental disorders along with other stressors, and even affect the individual performance in certain conditions. The aim of this study was to evaluate the combined effects of noise and smoking on cognitive performance of the workers in an automotive industry. Methods: This is a descriptive-analytical study with cross-se...

In this paper, a novel decision based median (DBM) filter for enhancing MR images has been proposed. The method is based on eliminating impulse noise from MR images. A median-based method to remove impulse noise from digital MR images has been developed. Each pixel is leveled from black to white like gray-level. The method is adjusted in order to decide whether the median operation can be appli...

background: noise is one of the most important hazardous physical factors in industrial environments. this study aimed to determine the effects of noise exposure on serum cortisol level and some blood parameters among male workers of a steel production company. methods: this cross-sectional study was conducted on 50 male workers in a steel production company. in order to assess the changes in b...

background : noise pollution is one of the important issues of pollutant in workplaces and is almost one of the harmful agents for workers. at present, instrumental based inspections for determining the index levels of noise in workshops is performed. this method is requiring a time consuming and ex-pensive in large scale inspection for workplaces. classification of workplaces based on noise po...