Devising a smart control and urban management network based on determination of the obstruction points of road traffic in Sfax

2017 ◽  
Author(s):  
Hana Elleuch ◽  
Jamel Rouis
Keyword(s):  
Road Traffic ◽  
Urban Management ◽  
Smart Control

Determination of key nodes in urban road traffic network

2014 ◽  
Author(s):  
Zhao Tian ◽  
Limin Jia ◽  
Honghui Dong ◽  
Zundong Zhang ◽  
Yanfang Yang ◽  
...  
Keyword(s):  
Road Traffic ◽  
Traffic Network ◽  
Urban Road ◽  
Key Nodes

scholarly journals Operational Tests of Brake Fluid in Passenger Cars

2020 ◽  
Author(s):  
Jacek Caban ◽  
Ján Vrábel ◽  
Branislav Šarkan ◽  
Andrzej Kuranc ◽  
Tomasz Słowik
Keyword(s):  
Water Content ◽  
Traffic Safety ◽  
Boiling Point ◽  
Road Traffic ◽  
Passenger Cars ◽  
Brake Fluid ◽  
Road Traffic Safety ◽  
Operational Information ◽  
Operational Tests

During the operation of vehicles, the properties of liquids and consumables deteriorate, which may affect the level of safety of technical systems and road traffic safety. The results of testing brake fluid aging as a function of boiling point and percentage of water content were presented on a selected group of passenger cars. The tested vehicles were varied in terms of age and kilometer mileage. The methodology for testing the quality of brake fluid based on glycol selected passenger cars remaining in service has been presented. In this study was shown a significant decrease in the brake fluids quality during the two years of operation in vehicles. The determination of boiling point was more efficient than the determination of water content. Despite the lack of full vehicle operational information, the obtained test results allow for exciting observations.

scholarly journals Determination of the Dynamic Vehicle Model Parameters by Means of Computer Vision

2019 ◽  
Vol 21 (3) ◽  
pp. 28-34
Author(s):  
Daniil A. Loktev ◽  
Alexey A. Loktev ◽  
Alexandra V. Salnikova ◽  
Anna A. Shaforostova
Keyword(s):  
Computer Vision ◽  
Road Traffic ◽  
Deformable Body ◽  
Model Parameters ◽  
Vehicle Model ◽  
The Road ◽  
Complex Approach ◽  
On The Road ◽  
The Individual

This study is devoted to determining the geometric, kinematic and dynamic characteristics of a vehicle. To this purpose, it is proposed to use a complex approach applying the models of deformable body mechanics for describing the oscillatory movements of a vehicle and the computer vision algorithms for processing a series of object images to determine the state parameters of a vehicle on the road. The model of the vehicle vertical oscillations is produced by means of the viscoelastic elements and the dry friction element that fully enough represent the behavior of the sprung masses. The introduced algorithms and models can be used as a part of a complex system for monitoring and controlling the road traffic. In addition, they can determine both the speed of the car and its dynamic parameters and the driving behavior of the individual drivers.

scholarly journals STUDY ON ADAPTIVE PARAMETER DETERMINATION OF CLUSTER ANALYSIS IN URBAN MANAGEMENT CASES

2017 ◽  
Vol XLII-2/W7 ◽  
pp. 1143-1150 ◽  
Author(s):  
J. Y. Fu ◽  
C. F. Jing ◽  
M. Y. Du ◽  
Y. L. Fu ◽  
P. P. Dai
Keyword(s):  
Clustering Algorithm ◽  
Spatial Clustering ◽  
Parameter Determination ◽  
Urban Management ◽  
Full Account ◽  
Data Set ◽  
K Value ◽  
Global Parameter ◽  
Parameter Adaptive

The fine management for cities is the important way to realize the smart city. The data mining which uses spatial clustering analysis for urban management cases can be used in the evaluation of urban public facilities deployment, and support the policy decisions, and also provides technical support for the fine management of the city. Aiming at the problem that DBSCAN algorithm which is based on the density-clustering can not realize parameter adaptive determination, this paper proposed the optimizing method of parameter adaptive determination based on the spatial analysis. Firstly, making analysis of the function Ripley's K for the data set to realize adaptive determination of global parameter MinPts, which means setting the maximum aggregation scale as the range of data clustering. Calculating every point object’s highest frequency K value in the range of Eps which uses K-D tree and setting it as the value of clustering density to realize the adaptive determination of global parameter MinPts. Then, the R language was used to optimize the above process to accomplish the precise clustering of typical urban management cases. The experimental results based on the typical case of urban management in XiCheng district of Beijing shows that: The new DBSCAN clustering algorithm this paper presents takes full account of the data’s spatial and statistical characteristic which has obvious clustering feature, and has a better applicability and high quality. The results of the study are not only helpful for the formulation of urban management policies and the allocation of urban management supervisors in XiCheng District of Beijing, but also to other cities and related fields.

scholarly journals Ekološki otisak cestovnog prometa na cresko-lošinjskom arhipelagu

Geoadria ◽  
2017 ◽  
Vol 15 (2) ◽  
pp. 269
Author(s):  
Hrvoje Grofelnik
Keyword(s):  
Seasonal Variations ◽  
Co2 Emission ◽  
Road Traffic ◽  
Dominant Role ◽  
Point Of View ◽  
Co2 Absorption ◽  
Northern Adriatic ◽  
Open Sea ◽  
One Year

Cres-Lošinj Archipelago is the largest insular traffic unit in Northern Adriatic. The archipelago consists of two large islands, Cres and Lošinj, and 27 smaller islands located among Kvarner, Kvarnerić, Rijeka Bay and open sea. From the point of view of traffic, this area gravitates mostly toward Rijeka traffic node. Traffic development of the islands was determined in the second half of the 20th century with the development of ferry traffic and road traffic on the islands. Today, the Archipelago is characterized by prominent seasonal variations of road traffic intensity due to dominant role of tourism in space valorisation. This research included partial determination of Ecological Footprint of road traffic on the islands on the basis of CO2 emission and capacity of insular surfaces to absorb CO2 .The author also created a model for calculating road mileage on the islands and indirectly calculated CO2 emission. The results indicated significant seasonal variations of CO2  emission on the islands, which are closely related to tourist valorisation of space and the number of non-residential vehicles on the islands. The paper also provides the ratio between residential and non-residential vehicles on the island, which influence the emission in accordance with their energy efficiency. The research showed that the capacity of CO2  absorption on Cres-Lošinj Archipelago is approximately 40 times greater than CO2 emission from road traffic during one year. 

scholarly journals Development of new „Catalogue of typical flexible and semi-rigid pavement structures”

2014 ◽  
Vol 13 (4) ◽  
pp. 127-136 ◽  
Author(s):  
Józef Judycki ◽  
Piotr Jaskuła ◽  
Marek Pszczoła ◽  
Mariusz Jaczewski ◽  
Dawid Ryś ◽  
...  
Keyword(s):  
Road Traffic ◽  
Rigid Pavement ◽  
Pavement Materials ◽  
Motion Data ◽  
Rigid Pavements ◽  
University Of Technology ◽  
Pavement Structures ◽  
Data Design ◽  
Research And Design

This publication describes research and design works which were conducted at the Gdansk University of Technology for the purpose of development of new catalogue of typical flexible and semi-rigid pavement structures. The studies included: standardization of pavement structures terminology, study of foreign pavement structures catalogues and design methods, analysis of fatigue criteria for design of flexible and semi-rigid pavements, analysis of road traffic, based on weight in motion data, design of subgrade improvement, incorporation of new pavement materials, recycled and anthropogenic materials, determination of mechanistic parameters of materials and design of pavement structures using mechanistic-empirical methods of pavement design.

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