The Blow Energy Control of Oil Hydratlic Breaker Corresponding to Crushing Strength of Rocks.

Within the determining factors of psychological performance, mental toughness is considered a multidimensional factor, comprising cognitive, affective, and behavioural components together with self-confidence, which is related to success in sports performance as well as psychological health and well-being. The aim of this study was to analyse the relationship between different factors composing mental toughness and age categories in young football players, in order to determine the presence of specific psychological skills in their formative progression. A total of 118 male players (16.91 ± 2.42 years old) completed the Spanish version by Cernuda (1988) of the original Psychological Performance Inventory (PPI) by Loher (1982, 1986). The results indicated significant differences in four variables (negative energy control, attention control, visual and image control, motivational level) on three different age categories, where the U19 category showed the best results for all the variables, decreasing afterwards in the semi-professional category. Significant correlations were established between mental toughness variables and age categories, where the age category variable was significantly correlated in a positive way with attention control, visual and image control, and motivational level. In the same line, the variable self-confidence correlated positively with negative energy control, attention control, motivational level, attention control, and positive energy. The assessment of psychological variables such as mental toughness, taking into account the formative stage, may be helpful for both coaches and players when selecting adequate mental skill training for improving competitive performance and sporting success, as well as for positive and healthy psychological development and well-being.

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Design and application of a tire slip energy control scheme based on optimal guaranteed cost theory for four‐in‐wheel drive electric vehicles

Asian Journal of Control ◽

10.1002/asjc.2523 ◽

2021 ◽

Author(s):

Hewei Li ◽

Bin Zhao ◽

WeiBo Yu ◽

Nan Xu ◽

KongHui Guo

Keyword(s):

Electric Vehicles ◽

Energy Control ◽

Wheel Drive ◽

Control Scheme ◽

Guaranteed Cost ◽

Design And Application

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Algorithm for secure communication of wireless network based on node energy control

Journal of Intelligent & Fuzzy Systems ◽

10.3233/jifs-189812 ◽

2021 ◽

pp. 1-11

Author(s):

Shu Zhang ◽

Jianhua Chen

Keyword(s):

Wireless Sensor Networks ◽

Energy Consumption ◽

Routing Protocol ◽

Secure Communication ◽

Network Routing ◽

Wireless Sensor ◽

Route Selection ◽

Joint Function ◽

Energy Control ◽

Establishment Process

This paper analyzes the security algorithm and energy cost of wireless sensor networks in depth, and designs and implements a series of energy-optimized security solutions to ensure the secure establishment and operation of wireless sensor networks. This paper proposes an improved Ad hoc network routing protocol based on energy control. It introduces a low-energy balanced routing algorithm to reduce routing transmission energy consumption, balance network traffic, and improve the energy control performance of network routing protocols. The protocol uses a cross-layer design in this way, the route selection combines the information of the link the remaining energy. A joint function is formed by the transmit power level remaining energy. The joint function of all nodes on the path is used as the basis for route selection and applied to the route discovery stage. At the same time, the protocol introduces edge degree parameters in the establishment process, the idea of minimum energy consumption path and the introduction of energy consumption ratio parameters in the cluster skull backbone network generation process are adopted to realize the energy optimization of the path establishment process. At the same time, the protocol uses the message interaction mechanism in the path establishment process to implement a node security authentication scheme based on secret shared information without adding any routing communication messages, which effectively prevents the passive and active attacks of the attacker on the network. The results of simulation experiments prove that the secure routing protocol achieves the network’s balanced energy consumption while ensuring the secure communication of the network, and solves the energy problem.

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