This paper aims to outline findings from a research project that has investigated an initiative to stimulate youths to become more entrepreneurial. The concept of summer entrepreneur has been developed in the last decade in a Swedish county. It was developed out of the idea that youths should have a possibility to run their own companies as alternative to traditional summer vacation employments...

according to the classical economists such as ricardo, labour was considered as the only factor of production; while capital, realized in machinery, tools and the like was identified as the accumulated labour and that inferior lands can be exploited due to the use of labour on them. but, in the long run development of capitalism in the western countries, this idea, i.e. labour as the base of pr...

Lead screws are the most commonly used transmission components in tool machinery and precision machinery, widely various industrial equipment instruments. However, screw tooth profile squeezes friction causes gear to break, surface wear, pitting other damage, which reduces service life of screw; use a large amount lubricants can not ignore environmental impact. The design research this subject ...

Land leveling is one of the most important steps in soil preparation and cultivation. Although land leveling with machines requires considerable amount of energy, it delivers a suitable surface slope with minimal soil deterioration as well as damage to plants and other organisms in the soil. Notwithstanding, in recent years researchers have tried to reduce fossil fuel consumption and its delete...

“Thank you for asking this question, which is highly relevant since we found an increased incidence of bladder cancer. All cryolite plant processes were at room temperature, and there was no source of PAH other than some machinery and trucks entering and leaving the plant. We therefore concluded that there was no increased exposure to PAH among these workers. I realized too late that we should ...

ROM HARRE, Great scientific experiments, Oxford, Phaidon Press, 1981, 8vo, pp. 224, illus., £8.95. In little more than 200 pages Dr. Harre manages to describe the reasoning behind twenty experiments, the apparatus involved, and the results. They cover a wide range of sciences distributed between Aristotle's biology and quantum mechanics. The amount of information included is remarkable. For exa...

In this paper I will present a summary of Turing’s article “Computing machinery and intelligence” [26] and discuss it. I retrace the ideas Turing presented in this paper and explain their historical context. Also, I discuss the impact Turing’s ideas had on the scientific community when the paper was published in 1950 as well as the meaning they still have today. Throughout this paper, I include...

farm machinery managers often need to make complex economic decisions on machinery replacement. repair and maintenance costs can have significant impacts on this economic decision. the farm manager must be able to predict farm machinery repair and maintenance costs. this study aimed to identify a regression model that can adequately represent the repair and maintenance costs in terms of machine...