BACKGROUND: Fertilizer management plays an important role for obtaining satisfactory yields and to increase crop productivity. Nitrogen is generally a limiting nutrient in crop production, and especially in sorghum, as it has been said to be the most responsive nutrient for its production. OBJECTIVES: Current study was conducted to assessment effect of urea fe...

In this paper, we present a cognitive learning framework for the humanoid robot to acquire cutting skill. Our framework consists of two main modules: 1) A visual module that is trained using the deep feature to visually estimate object firmness level, and 2) A motor skill learning module that adopts reinforcement learning method to generate optimized control parameters for cutting. We propose a...

Cutting processes are unstable machining processes. The influence of the instability on the deformation mechanism that leads to the chip formation at the atomic scale is analysed in this paper. Fundamental aspects of the crystalline networks deformation are underlined by using molecular dynamics technique applied to the microscopic level of the deformed material and are defined as basic instabi...

the implementation of different silvicultural systems can be effective on different characteristics of forest stands, such as stand structure and diameter distribution of trees. this study was carried out in shafaroud forests of gilan province of northern iran. the objectives of this research were 1) to evaluate the suitability of different probability distribution functions, including weibull,...

We define spinc prequantization of a symplectic manifold to be a spinc structure and a connection which are compatible with the symplectic form. We describe the cutting of an S-equivariant spinc prequantization. The cutting process involves a choice of a spinc prequantization for the complex plane. We prove that the cutting is possible if and only if the moment map level set along which the cut...

Previous research highlighting gender differences in knee mechanics during cutting were questioned due to these studies typically disregarding the effects of participant characteristics on cutting technique. When males and females were matched for sport, true skill level and lower limb anthropometry, previously-reported gender differences in knee kinematics and moments were no longer evident du...