Rock burst support of deep rock mass has always been a difficult problem in geotechnical engineering. Aiming at the mass, new type pressure yielding and energy-absorbing bolt system is designed this paper. The energy absorption characteristics laminated spring members with different wall thicknesses were studied by static axial compression test drop hammer dynamic impact test. experimental resu...

The Ginkgo biloba is one of ancient trees that exists from billions of years ago, its leaf and nut are used as herbs and foods in China, while so far its pollen does not have any application except pollination. In order to evaluate the antioxidant activity of Ginkgo biloba pollen, and rapidly screen its antioxidative components, the 1,1-diphenyl-2-picrylhydrazyl (DPPH) scavenging ability, total...

BACKGROUND We aimed to assess the high-risk group for suicide using different classification methods includinglogistic regression (LR), decision tree (DT), artificial neural network (ANN), and support vector machine (SVM). METHODS We used the dataset of a study conducted to predict risk factors of completed suicide in Hamadan Province, the west of Iran, in 2010. To evaluate the high-risk grou...

OBJECTIVES The interpretation of clinical data for the diagnosis of coronary heart disease can be done using algorithms in data mining. Most clinical data interpretation systems for diagnosis developed using data mining algorithms with a black-box approach cannot recognize examination attribute relationships with the incidence of coronary heart disease. METHODS This study proposes a system to...

the purpose of this research was to assess the influence of several orchard systems involving trees trained to different leader numbers on growth, cropping, and fruit quality of two apple cultivars. the study was conducted during 1994-2007 at the fruit experimental station in samotwór, next to wrocław (south-western poland). one-year-old trees of ‘elstar’ and ‘jonagold’ cultivars on the m.9 roo...

OBJECTIVES This study aimed to build and test the models of machine learning (ML) to predict the mortality of hospitalised motorcycle riders. SETTING The study was conducted in a level-1 trauma centre in southern Taiwan. PARTICIPANTS Motorcycle riders who were hospitalised between January 2009 and December 2015 were classified into a training set (n=6306) and test set (n=946). Using the dem...

A three degree dynamic model of manipulator included a screw-nut auxiliary is introduced. Considering the random disturbance and the to the manipulator in practical situation , the adaptive iterative learning controller is designed. The simulation was conducted under MATLAB environment ,the result shows that the controller can efficiently track the trajectory with high accuracy. The result of t...