Investigation of the train driver injuries and the optimization design of driver workspace during a collision

Author(s):  
Yong Peng ◽  
Lin Hou ◽  
Mingzhi Yang ◽  
Hongqi Tian
2020 ◽  
Vol 64 (1-4) ◽  
pp. 165-172
Author(s):  
Dongge Deng ◽  
Mingzhi Zhu ◽  
Qiang Shu ◽  
Baoxu Wang ◽  
Fei Yang

It is necessary to develop a high homogeneous, low power consumption, high frequency and small-size shim coil for high precision and low-cost atomic spin gyroscope (ASG). To provide the shim coil, a multi-objective optimization design method is proposed. All structural parameters including the wire diameter are optimized. In addition to the homogeneity, the size of optimized coil, especially the axial position and winding number, is restricted to develop the small-size shim coil with low power consumption. The 0-1 linear programming is adopted in the optimal model to conveniently describe winding distributions. The branch and bound algorithm is used to solve this model. Theoretical optimization results show that the homogeneity of the optimized shim coil is several orders of magnitudes better than the same-size solenoid. A simulation experiment is also conducted. Experimental results show that optimization results are verified, and power consumption of the optimized coil is about half of the solenoid when providing the same uniform magnetic field. This indicates that the proposed optimal method is feasible to develop shim coil for ASG.


2005 ◽  
Vol 42 (5) ◽  
pp. 1375-1375 ◽  
Author(s):  
Shinkyu Jeong ◽  
Mitsuhiro Murayama ◽  
Kazuomi Yamamoto

Author(s):  
Anna A. Zakrevskaya ◽  
Ekaterina V. Dmitrieva

Introduction. The article presents the results of a survey of employees of the railway industry and volunteers of various professions on their attitude to the possibility of employment of women as a locomotive driver and assistant driver. The aim of study is to determine the socio-psychological aspects of allowing women to work as a driver and assistant driver of an electric train among employees of various professions, including in the railway industry. Materials and methods. Anonymous online survey conducted among 112 people: 60 women aged 29.9±7.9 years (from 19 to 55 years), and 52 men aged 29.6±8.4 years (from 15 to 53 years). Results. There is an ambiguous attitude to the prospects of allowing women to work as a driver and assistant driver of an electric train. The most urgent problems of an organizational nature that accompany changes in labor legislation are noted: the abolition of allowances "for harm", the increase in the retirement age, inconveniences in holiday homes that are currently designed exclusively for men. There are also positive prospects for these changes: the possibility of healthy professional competition and the emergence of new areas of professional growth for women, as well as increasing the prestige of OAS "Russian Railways" by creating an image of a company that provides candidates with equal rights regardless of gender. Conclusions. The appearance (although it would be more accurate to say "return") of women to work as drivers and assistant drivers is not a forced measure, as it was in wartime, but the result of the modernization of rolling stock and railway infrastructure, bringing to the fore the assessment of professionally important operator qualities, regardless of the gender of candidates. However, gender characteristics cannot be ignored in the socio-psychological context - for example, when recruiting locomotive crews with mixed composition or when creating a favorable psychological climate in a locomotive depot.


Author(s):  
Sai-jun LV ◽  
Long-yang DAI ◽  
Long-yang DAI ◽  
Hong-geng ZHU

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