Riemann-Hilbert problems for the system of string vibration equations in a domain with a characteristic part of boundary

2008 ◽  
Vol 44 (3) ◽  
pp. 428-433
Author(s):  
Yu. N. Shishmareva
2020 ◽  
pp. 72-81
Author(s):  
G.G. Kamkin ◽  

The article is devoted to the analysis of urban “highways-barriers” (on the example of the South-West of Moscow) – the largest highways and railways, which are characterized by a combination of a high level of contact and barrier functions. Three of their key functions are identified: limiting, stabilizing, function of unevenness and no equilibrium growth. The main transport hubs have been identified on the basis of which highway barriers are divided according to the degree of contact (barrier) into three categories. It is shown that, as a rule, the larger the spatial size of the highway-barrier, the larger its volume of traffic flow, however, there are many exceptions. In the South-West of Moscow, with a relatively even settlement, the placement of metro stations plays a key role in overcoming the barrier. On less significant highways, the role of metro stations in overcoming the barrier is especially great. In some areas, highways-barriers form barrier topological tiers. A key feature of the South-West of Moscow is the presence of two barrier tiers. Inside the first barrier tier there are objects that mark it as a special urban area. A characteristic part of the first tier is the approach to the periphery in the area where Leninsky Prospekt and Vernadsky Prospekt meet. The second barrier tier is quite small and in- cludes the area between the Cheremushkinskiy market and Profsoyuznaya street. The existing system of highways-barriers was formed by the time of registration in 1968–1970. South-West of Moscow as a whole and manifests itself at the present time.


2020 ◽  
pp. 77-98
Author(s):  
Charlotte E. Howell

Friday Night Lights (NBC, 2006–2011) and Rectify (SundanceTV, 2013–2016) exemplified containing Christianity’s middlebrow appeal through displacement onto the cultural specificity of a realistically portrayed American South within a quality television drama. These two shows represent Christianity as both the dominant faith of their characters and as a characteristic part of Southern culture. Creatives used the milieu of an “authentic” American South to shift religion away from themselves and their quality-audience expectations, maintaining acceptability within the dominant non-Christian culture of television production. This displacement safely contained religion within the creatives’ production culture, allowing them to acknowledge Christianity’s religious content, but only within the peculiar particularity of the American South.


2019 ◽  
Vol 13 (9) ◽  
pp. 2151-2189 ◽  
Author(s):  
Rohit Nagpal
Keyword(s):  

2009 ◽  
Author(s):  
Irina Asekritova ◽  
Börje Nilsson ◽  
Sara Rydström ◽  
Börje Nilsson ◽  
Louis Fishman ◽  
...  

2013 ◽  
Vol 694-697 ◽  
pp. 325-328
Author(s):  
Su Ling Wang ◽  
Nan Yang Bai ◽  
Ming Xi Feng ◽  
Huai Yu Zhang

Rational and efficient use of the sucker rod vibration energy is one of the effective ways of pumping unit energy saving. The vibration mechanics as the basis for establishing three-dimensional coupled vibration mathematical model of sucker rod-tubing-liquid column, and using difference solution to reproduce vibration process within one stroke of the sucker rod string, on this basis, analyzing the variable stiffness sucker rod string to the impact of the polished rod load and the pump stroke, and gaining reasonable parameters of the sucker rod string vibration energy, and combining with the working conditions of the sucker rod string to establish the match conditions of the sucker rod string liquid column incentive and polished rod incentive, and proposing the condition of pump to generate over-stroke to provide the theoretical basis for rational use of the sucker rod string vibration energy.


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