In this paper. the cause of cavitation noise limiting value is analyzed. and the de- termining method of cavitation noise limiting value of body os giving.
The present paper analyzes the relationship between the body speed and the cavitation noise. The results indicate that there is the limiting value of cavitation noise.
Through the study on data of analytic tree, the fitting empirical equation for tree growth was obtained, i.e. , the function with increment as variable and annual precipitation as the independent variable. The thresho...Through the study on data of analytic tree, the fitting empirical equation for tree growth was obtained, i.e. , the function with increment as variable and annual precipitation as the independent variable. The threshold value of annual precipitation for tree growth was obtained through mathematical operation including derivation. It was concluded that Larix gmelinii grows the fast under the annual precipitation of about 545.1 mm, and negative growth would occur if the annual precipitation is lower than 349 mm and higher than 1 132.8 mm. Furthermore, the application value, research direction and matters needing attention were pointed out.展开更多
Artificial bee colony (ABC) algorithm is one of the popular swarm intelligence algorithms. ABC has been developed by being inspired foraging and waggle dance behaviors of real bee colonies in 2005. Since its invention...Artificial bee colony (ABC) algorithm is one of the popular swarm intelligence algorithms. ABC has been developed by being inspired foraging and waggle dance behaviors of real bee colonies in 2005. Since its invention in 2005, many ABC models have been proposed in order to solve different optimization problems. In all the models proposed, there are only one scout bee and a constant limit value used as control parameters for the bee population. In this study, the performance of ABC algorithm on the numeric optimization problems was analyzed by using different number of scout bees and limit values. Experimental results show that the results obtained by using more than one scout bee and different limit values, are better than the results of basic ABC. Therefore, the control parameters of the basic ABC should be tuned according to given class of optimization problems. In this paper, we propose reasonable value ranges of control parameters for the basic ABC in order to obtain better results on the numeric optimization problems.展开更多
In 2019, the goal of the OEKO-TEX■ Association is again to reinforce consumer protection and sustainability along the value creation chain for textiles and leather; the existing guidelines for the OEKO-TEX■ product ...In 2019, the goal of the OEKO-TEX■ Association is again to reinforce consumer protection and sustainability along the value creation chain for textiles and leather; the existing guidelines for the OEKO-TEX■ product portfolio have thus been amended again for the start of the year. The new regulations will come into effect after a three-month transition period on April 1st, 2019.展开更多
文摘In this paper. the cause of cavitation noise limiting value is analyzed. and the de- termining method of cavitation noise limiting value of body os giving.
文摘The present paper analyzes the relationship between the body speed and the cavitation noise. The results indicate that there is the limiting value of cavitation noise.
文摘Through the study on data of analytic tree, the fitting empirical equation for tree growth was obtained, i.e. , the function with increment as variable and annual precipitation as the independent variable. The threshold value of annual precipitation for tree growth was obtained through mathematical operation including derivation. It was concluded that Larix gmelinii grows the fast under the annual precipitation of about 545.1 mm, and negative growth would occur if the annual precipitation is lower than 349 mm and higher than 1 132.8 mm. Furthermore, the application value, research direction and matters needing attention were pointed out.
基金supported by the Selcuk University Scientific Projects Coordinatorship
文摘Artificial bee colony (ABC) algorithm is one of the popular swarm intelligence algorithms. ABC has been developed by being inspired foraging and waggle dance behaviors of real bee colonies in 2005. Since its invention in 2005, many ABC models have been proposed in order to solve different optimization problems. In all the models proposed, there are only one scout bee and a constant limit value used as control parameters for the bee population. In this study, the performance of ABC algorithm on the numeric optimization problems was analyzed by using different number of scout bees and limit values. Experimental results show that the results obtained by using more than one scout bee and different limit values, are better than the results of basic ABC. Therefore, the control parameters of the basic ABC should be tuned according to given class of optimization problems. In this paper, we propose reasonable value ranges of control parameters for the basic ABC in order to obtain better results on the numeric optimization problems.
文摘In 2019, the goal of the OEKO-TEX■ Association is again to reinforce consumer protection and sustainability along the value creation chain for textiles and leather; the existing guidelines for the OEKO-TEX■ product portfolio have thus been amended again for the start of the year. The new regulations will come into effect after a three-month transition period on April 1st, 2019.
