INFLUENCE OF ROAD CONDITIONS ON THE OPERATIONAL RELIABILITY OF PUBLIC VEHICLES

2020 ◽  
Vol 71 (4) ◽  
pp. 11-18
Author(s):  
M.G. KORCHAJKIN ◽  
◽  
G.S. CHIBUKHCHYAN ◽  
Keyword(s):  
Public Transport ◽  
High Reliability ◽  
Operating Time ◽  
Operational Reliability ◽  
Quality Service ◽  
Urban Public Transport ◽  
Optimal Maintenance ◽  
Distribution Func ◽  
And Performance ◽  
Maintenance Personnel

Modern urban public transport should have: quality service, environmental and operational safety, high reliability and performance, a quality system of maintenance and repair, high profes-sionalism of drivers and maintenance personnel. The article discusses the features of the operation of public transport in Yerevan, the issues of improving operational reliability and adjusting the frequency of replacement of operational materials. Using the RSTAT software package, the statis-tics of failures and operating time of GAZEL minibuses (about 1400 pcs.) For Yerevan routes, characterized by a sharp relief contour and traffic intensity, were processed and their correspond-ence to the Weibull distribution was processed. The histograms and curves of the distribution func-tions of the failures of the gearboxes and the rear axles of the minibuses were constructed, and the optimal maintenance numbers and operating time values were determined.

Changes in Transport Organisations within Southeast Asian Cities: Petty Producers to Statutory Corporations

1986 ◽  
Vol 18 (12) ◽  
pp. 1559-1580 ◽  
Author(s):  
P J Rimmer
Keyword(s):  
Southeast Asia ◽  
Public Transport ◽  
Southeast Asian ◽  
South American ◽  
Early 19Th Century ◽  
Corporate Growth ◽  
Urban Public Transport ◽  
Asian Context ◽  
And Performance ◽  
American Cities

A spate of studies of West European and North American cities have charted and interpreted the remarkable and rapid transformation of public transport since the early 19th century. The question arises as to whether the attempts to superimpose metropolitan culture via public transport structures in African, Asian, and Central and South American cities were as spectacular and speedy. Attention, in tackling this question, focuses upon the transfer of public transport technological — organisational structures to Southeast Asia since the 1860s. Rather than accept the transitional process of competition through oligopoly to state-monopoly as given, a test is made of whether the basic prerequisites of these phases can be sustained in a Southeast Asian context, from an analysis of core technologies and the structure, conduct, and performance of individual firms. Past corporate growth paths of urban public transport in Southeast Asia can then be mapped out and future directions suggested.

scholarly journals URBAN PUBLIC TRANSPORT: MARGINAL VALUE OF THE CAPACITY FACTOR

2019 ◽  
Vol 16 (3) ◽  
pp. 290-301
Author(s):  
A. I. Fadeev ◽  
Ye. V. Fomin ◽  
S. Alhusseini
Keyword(s):  
Public Transport ◽  
Operating Time ◽  
Capacity Utilization ◽  
Utilization Factor ◽  
Marginal Value ◽  
Passenger Traffic ◽  
Urban Public Transport ◽  
Speed Fluctuation ◽  
Average Operating ◽  
Average Operating Time

Introduction. One of the most important indicators determining the public transport service quality is the capacity utilization factor of transport fleet. This parameter directly effects on the economic efficiency of the transport organization. For the carrier it is desirable from an economic point of view that the value of the capacity utilization factor takes on the greatest value. Passengers, on the contrary, prefer to transfer without overfull capacity of transport vehicles. Moreover, this factor is used in determining travel fares, analyzing the executed movement regarding the availability of reserves in carrying capacity and planning transportation process. The paper discusses the method of marginal value calculation of the transport fleet’s capacity utilization factor of urban public transport based on ensuring standard vehicle's cabin filling limits.Materials and methods. The authors solved the task of determining the filling marginal value for transport fleet while working on regular urban routes by analyzing the dependence of the capacity utilization factor on the passenger traffic parameters, the average operating time of the transport fleet on the route and the speed fluctuation during public transport operation. The authors also proposed the indicator of the transportation speed fluctuation during the operation of urban public transport.Results. The authors found out that the capacity utilization factor of transport fleet substantially depended on the passenger traffic parameters, on the average operating time of the transport fleet and on the speed fluctuation during public transport operation.Discussion and conclusion. The obtained dependences allow us calculating the marginal values of capacity utilization factor with taking into account the parameters of the planned transport process. The standard capacity utilization factor varies within considerable limits from 0.2 to 0.4, depending on the operating conditions.

scholarly journals Analysis of Bus Line Operation Reliability Based on Copula Function

2021 ◽  
Vol 13 (15) ◽  
pp. 8419
Author(s):  
Zhang Xiaoliang ◽  
Jia Limin
Keyword(s):  
Public Transport ◽  
Public Transportation ◽  
Evaluation Method ◽  
Copula Function ◽  
Service Level ◽  
Operational Reliability ◽  
The Sustainable Development ◽  
Urban Public Transport ◽  
High Level ◽  
The Relationship

To promote the development level of urban sustainability, more and more cities have been paying attention to the improvement of public transportation. City managers intend to attract people from private cars to public transport by improving the service level of urban public transport. The operational reliability of bus lines plays a crucial role in maintaining high-level service of public transportation. Previous studies have focused on the service level of the whole line by investigating the overall stability of departure punctuality, line running time, and punctuality. This study aims to clarify the relationship between the whole line and sites in terms of the influence on the operational reliability of bus lines. This study proposes a bus route reliability evaluation method, based on copulas connect function, and the actual line data are taken as a case study. The results show that the method reveals the relationship between the overall line and the interstation paths in the context of operational reliability. This study finds the interstation path, which is more critical to the whole line. This method can provide a good reference for the diagnosis and evaluation of line operation and the optimization of bus routes. The results can support the sustainable development of public transportation.

TANGGAPAN WAJIB PAJAK TERHADAP KUALITAS PELAYANAN DILIHAT DARI TINGKAT KEPENTINGAN DAN KINERJA PADA KANTOR PELAYANAN PAJAK KOTA BOGOR

2018 ◽  
Vol 2 (01) ◽  
pp. 14
Author(s):  
Eddy Supardi
Keyword(s):  
Performance Analysis ◽  
Service Quality ◽  
Descriptive Analysis ◽  
Good Work ◽  
Satisfaction Level ◽  
Quality Service ◽  
Analysis Method ◽  
And Performance ◽  
Personal Tax

The Tax Payer obidience in fulfiling their taxation obligation will be influenced a lot by the satisfaction level toward the service fiscus. The aim of this observation is to know the response of Tax Payer toward service quality through importance and performance. The population which become the object of this observation is the personal Tax Payer registered in Bogor Tax Service Office and the number of respondents taken as the sample are 100 respondents with Slovin formula. The analysis method used is descriptive analysis and importance-performance analysis.   The result of this observation will be able to be used as one of the input to Bogor Tax Service Office in improving the quality service and for the following observation, especially those who take the same object as the observation in order to improve the quality service to the Tax Payer based on the service of its working way which is felt less. Otherwise it is important for The Tax Payer, maintaining the good work or balancing the service quality based on the working way which is evaluated less important by The Taxe Payer, but has been done reasonably well or very well by The Service Office

scholarly journals Parameter Determination and Ion Current Improvement of the Ion Current Sensor Used for Flame Monitoring

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 697
Author(s):  
Hanqing Xu ◽  
Weijun Fan ◽  
Jianwei Feng ◽  
Peiliang Yan ◽  
Shuchan Qi ◽  
...  
Keyword(s):  
Contact Area ◽  
High Reliability ◽  
Ion Current ◽  
Parameter Determination ◽  
Current Sensor ◽  
Vertical Position ◽  
Excitation Voltage ◽  
Burner Exit ◽  
And Performance ◽  
Flame Monitoring

Flame monitoring of industrial combustors with high-reliability sensors is essential to operation security and performance. An ion current flame sensor with a simple structure has great potential to be widely used, but a weak ion current is the critical defect to its reliability. In this study, parameters of the ion current sensor used for monitoring flames on a Bunsen burner are suggested, and a method of further improving the ion current is proposed. Effects of the parameters, including the excitation voltage, electrode area, and electrode radial and vertical positions on the ion current, were investigated. The ion current grew linearly with the excitation voltage. Given that the electrodes were in contact with the flame fronts, the ion current increased with the contact area of the cathode but independent of the contact area of the anode. The smaller electrode radial position resulted in a higher ion current. The ion current was insensitive to the anode vertical position but largely sensitive to the cathode vertical position. Based on the above ion current regularities, the sensor parameters were suggested as follows: The burner served as a cathode and the platinum wire acted as an anode. The excitation voltage, anode radial and vertical positions were 120 V, 0 mm, and 6 mm, respectively. The method of further improving the ion current by adding multiple sheet cathodes near the burner exit was proposed and verified. The results show that the ion current sensor with the suggested parameters could correctly identify the flame state, including the ignition, combustion, and extinction, and the proposed method could significantly improve the magnitude of the ion current.

scholarly journals Impact of COVID-19 on bus and urban public transport in SR

2021 ◽  
Vol 55 ◽  
pp. 418-425
Author(s):  
Renáta Cződörová ◽  
Marek Dočkalik ◽  
Jozef Gnap
Keyword(s):  
Public Transport ◽  
Urban Public Transport
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