Period Operating Method: A New Method of Transport Organization in Carrying Capacity-Restricted District for Railway Speed-Raising Lines

ICTE 2011 ◽  
2011 ◽  
Author(s):  
Dajie Zuo
Keyword(s):  
Carrying Capacity ◽  
New Method ◽  
Transport Organization ◽  
Operating Method

scholarly journals Determination of the Sediment Carrying Capacity Based on Perturbed Theory

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Zhi-hui Ni ◽  
Qiang Zeng ◽  
Wu Li-chun
Keyword(s):  
Carrying Capacity ◽  
Influencing Factor ◽  
Least Square Method ◽  
Least Square ◽  
New Method ◽  
Linear Regression Method ◽  
Average Flow Velocity ◽  
New Formula ◽  
Sediment Carrying Capacity

According to the previous studies of sediment carrying capacity, a new method of sediment carrying capacity on perturbed theory was proposed. By taking into account the average water depth, average flow velocity, settling velocity, and other influencing factors and introducing the median grain size as one main influencing factor in deriving the new formula, we established a new sediment carrying capacity formula. The coefficients were determined by the principle of dimensional analysis, multiple linear regression method, and the least square method. After that, the new formula was verified through measuring data of natural rivers and flume tests and comparing the verified results calculated by Cao Formula, Zhang Formula, Li Formula, Engelung-Hansen Formula, Ackers-White Formula, and Yang Formula. According to the compared results, it can be seen that the new method is of high accuracy. It could be a useful reference for the determination of sediment carrying capacity.

A new method to evaluate urban resources environment carrying capacity from the load-and-carrier perspective

2020 ◽  
Vol 154 ◽  
pp. 104616 ◽  
Author(s):  
Liyin Shen ◽  
Tianheng Shu ◽  
Xia Liao ◽  
Nan Yang ◽  
Yitian Ren ◽  
...  
Keyword(s):  
Carrying Capacity ◽  
New Method

scholarly journals Condition optimization for organizing the operation of connected trains on an ongoing basis on the Trans-Siberian Railway of the Eastern operational range of the railway network

2021 ◽  
Vol 80 (1) ◽  
pp. 4-12
Author(s):  
Mikhail I. MEKHEDOV ◽  
Evgeniy A. SOTNIKOV ◽  
Pavel S. KHOLODNYAK ◽  
Dmitriy A. KURSIN ◽  
Natal’ya V. KORNIENKO
Keyword(s):  
Carrying Capacity ◽  
Target Function ◽  
Parallel Execution ◽  
New Method ◽  
Operating Costs ◽  
Railway Network ◽  
Line Section ◽  
Condition Optimization ◽  
Double Mass ◽  
Effective Development

A target function has been developed for solving the problem of increasing the carrying capacity of loaded lines by organizing the motion of connected (double) trains on an ongoing basis, providing for the minimization of investment and operating costs. Conditions of constant circulation of connected trains on the Skovorodino—Smolyaninovo line section of the Trans-Siberian Railway, where the prospective freight flows exceed the available carrying capacity, are considered. All solutions are designed especially for this section. It is taken into account that the main investments for the implementation of the new method are related to the development of stations for working with connected trains, as well as to strengthening the power supply system for driving connected trains of double mass. Additional operating costs are determined by the need to perform various technological operations with connected trains. Estimated number of connected trains Nрасч has been established to ensure the required long-term carrying capacity. In order to save costs, the value of N расч is minimized on the basis of comparing the values of the maximum possible number of connected as well as single trains with the required carrying capacity on different sections of the line. The article considers methodology for the placement of stations for connecting/disconnecting trains, maximally combined with stations for changing locomotive crews, which provides savings in investment and operating costs. The optimal one was chosen from three possible options of such stations placement. Two schematic diagrams of stations for connecting/disconnecting trains are considered — with sequential and parallel execution of operations. It is shown that the minimization of costs is ensured by the sequential (flow) execution of these operations. In order to save investments, the development of a technical design for the implementation of a new method should provide the possibility of using auxiliary stations for connecting/disconnecting trains and changing locomotive crews of auxiliary stations with more favorable topographic conditions and the location of the station buildings for its development. Specific proposals on this issue are given for the considered line section of the Trans-Siberian Railway. Taking into account the current provisions, a method has been developed for calculating the operating fleet of locomotives handling connected trains, the size of which is minimized. Organization of the driving of connected trains on an ongoing basis ensures the effective development of the prospective freight traffic. 

Effects of residual stresses on fracture behaviour—experimental results and assessment methods

2000 ◽  
Vol 35 (4) ◽  
pp. 307-316 ◽  
Author(s):  
R. A Ainsworth ◽  
J. K Sharples ◽  
S. D Smith
Keyword(s):  
Experimental Data ◽  
Residual Stresses ◽  
Carrying Capacity ◽  
Fracture Behaviour ◽  
Assessment Methods ◽  
Experimental Results ◽  
New Method ◽  
Load Carrying Capacity ◽  
Defective Structure ◽  
Load Carrying

The influence of residual stresses on fracture behaviour depends on the level of plasticity in a component. Under predominantly elastic conditions, residual stresses can significantly reduce the load-carrying capacity of a defective structure. Conversely, the effects of residual stresses can be minimal when plasticity is widespread. In this paper, a set of experiments with well-characterized residual stresses is used to demonstrate these effects. A new method for assessing defects in practical structures with residual stresses is then described and related to existing methods. The method is applied to the experimental data and shown to be generally accurate and yet conservative.

Selective Sampling and Orientation of Non-Homogeneous Tissues

1968 ◽  
Vol 26 ◽  
pp. 98-99
Author(s):  
C. C. Clawson ◽  
L. W. Anderson ◽  
R. A. Good
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Light Microscopy ◽  
Random Sampling ◽  
New Method ◽  
Microscope Examination ◽  
Small Areas ◽  
Selective Sampling ◽  
Large Numbers ◽  
Specific Orientation

Investigations which require electron microscope examination of a few specific areas of non-homogeneous tissues make random sampling of small blocks an inefficient and unrewarding procedure. Therefore, several investigators have devised methods which allow obtaining sample blocks for electron microscopy from region of tissue previously identified by light microscopy of present here techniques which make possible: 1) sampling tissue for electron microscopy from selected areas previously identified by light microscopy of relatively large pieces of tissue; 2) dehydration and embedding large numbers of individually identified blocks while keeping each one separate; 3) a new method of maintaining specific orientation of blocks during embedding; 4) special light microscopic staining or fluorescent procedures and electron microscopy on immediately adjacent small areas of tissue.

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