منابع مشابه
Tractor Operators’ Perceptions of Farm Tractor Safety Issues and Implications to Agricultural and Extension Education
Historically, the purpose of farm safety and health educational materials and programs has been to persuade, convince or educate farmers, members of their families, and hired employees to voluntarily engage in safe behavior during farm or nonfarm work activities (Murphy, 1992). Increasingly, authors have noted that traditional farm safety educational programs have been relatively ineffective (A...
متن کاملEvaluation of wholE-body vibration risk in agricultural tractor drivErs
CVETANOVIC, B. and D. ZLATKOVIC, 2013. Evaluation of whole-body vibration risk in agricultural tractor drivers. Bulg. J. Agric. Sci., 19: 1155-1160 During their work, agricultural tractor drivers are exposed to various negative influences, among which vibrations are especially harmful. It is about vibrations generated in engine while the tractor is working, which are then transmitted to the dri...
متن کاملGuidance system for agricultural tractor with four wheel steering
In a typical automatic guidance system for agricultural machines, the guidance system controls only one degree of freedom; either the steering angle of the front wheels of the tractor or other steering equipment is used for steering. In a tractor with the multiple degrees of freedom, like four wheel steering, the guidance system may use both the degrees of freedom for path tracking. However, th...
متن کاملStatistical Aspects of Modern IC Designs
Increasing circuit complexity and die area with at the same time decreasing device dimensions render traditional approaches to IC design inadequate. The result is serious risk of suboptimal designs and thus poor performance and/or poor manufacturing yield. New tools are necessary to capture the effects of statistical variability of devices and interconnects on circuit performance. No longer can...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1916
ISSN: 0036-8733
DOI: 10.1038/scientificamerican07291916-100