scholarly journals Traffic forecasting on national roads

2012 ◽  
Vol 10 (1) ◽  
pp. 131-144
Author(s):  
Jerzy Kukiełka
Keyword(s):  
Knowledge Base ◽  
Road Network ◽  
Load Forecasting ◽  
Modeling Method ◽  
Digital Model ◽  
Traffic Load ◽  
Heavy Vehicles ◽  
Traffic Forecasting ◽  
Road Pavement ◽  
Selection Of

The purpose of this paper is the analysis of traffic load on road pavement and it forecasting, in aspect of designing the reconstruction of roads and pavement strengthening. At present modeling method is a method that offers highest level of traffic load forecasting. Preparation of the digital model of road network and traffic load, which take place on it, allows to eliminate many drawbacks of existing methods of forecasting. For accurate predictions of heavy vehicles by model it is necessary to build the best possible knowledge base of traffic load which is present on the existing road network in particularly based on the largest number of measure spots to both classification and pre-selection of weight classes such as WIM-P.

scholarly journals The use of cement concrete pavements for roads, depending on climatic conditions

2019 ◽  
Vol 13 (3) ◽  
pp. 235-240
Author(s):  
Iryna Solonenko
Keyword(s):  
European Union ◽  
Statistical Models ◽  
Road Network ◽  
The European Union ◽  
Rational Selection ◽  
Cement Concrete ◽  
The Road ◽  
Road Pavement ◽  
Operational Characteristics ◽  
Selection Of

The development of road network infrastructure is an important component of the economic development of the European Union. Updating of the road network contributes to the integration of the economies of countries into a coherent whole. The road network provides the free movement of citizens, the movement of goods and the effective implementation of various services. The increase in the length of the road network leads to an increase in the financial and material costs necessary to ensure its maintenance and repair. One of the ways to reduce costs is by strengthening the physic-mechanical and operational characteristics of the pavement due to the widespread use of cement concrete. The quality of the pavement of cement concrete depends largely on the rational selection of its composition. This allows a significant increase in the durability of road pavement. The purpose of the research was: the development of recommendations for the rational selection of the composition of the road pavement material of cement concrete, aimed at upgrading longevity, and taking into account its frost resistance grade. According to the goal, the following tasks were developed: the analyses of the climatic zones in which the road network of the European Union is located; the development of a research plan, a selection of the response function and influence factors; the study of physico-mechanical and operational characteristics of the researched material of road pavement; on the basis of the obtained data, the calculation of the complex of experimental-statistical models, which describe the physico-mechanical and operational characteristics of the road pavement material; on the basis of experimental statistical models, a method was proposed for selecting the rational compositions of the cement concrete pavement road material depending on the conditions of its application. The results presented in the article can be used in engineering and scientific practice for the selection of road pavement from cement concrete for highways.

scholarly journals Monolayer asphalt pavement. Western requirements in Polish realities

2014 ◽  
Vol 13 (4) ◽  
pp. 153-160
Author(s):  
Piotr Koźlarek
Keyword(s):  
Road Network ◽  
Asphalt Pavement ◽  
Single Layer ◽  
Technical Condition ◽  
Traffic Load ◽  
Base Layer ◽  
Construction Time ◽  
Road Pavement ◽  
Local Roads ◽  
Base Course

Polish road network is made up of 95% local roads. Their technical condition is much worse in comparison to motorways and national roads network. The lack of financial resources is one of the main reasons for this situation. That is why there is a continuous search for technologies, that allow for fast and cheap pavement repair or modernization. The monolayer asphalt pavement is such a solution offering in addition to cost effectiveness and shorter construction time, also an increased durability. Our western neighbors developed the technical regulations for this technology under the name "Asphalttragdeckschicht" which is marked as AC 16 TD. In direct translation "Asphalttragdeckschicht" means supporting wearing course / base layer. The monolayer asphalt pavement consists of a single layer with thickness between 5 to 10 cm made of HMA that links the functions of two layers – asphalt base course and asphalt wearing course. Thanks to this, the monolayer is resistant to environmental conditions and provides an adequate bearing capacity for a given traffic load. Insufficient funding and the impossibility to put the street out of operation were the bases for the investor’s decision to build a 220m section of road pavement using the monolayer pavement technology in Pruszków near Warsaw. This project gave the possibility to learn and gain an experience with a new western technology applied to Polish reality.

scholarly journals The Impact of the Selection of Exogenous Variables in the ANFIS Model on the Results of the Daily Load Forecast in the Power Company

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 345
Author(s):  
Janusz Sowinski
Keyword(s):  
Load Forecasting ◽  
Large Set ◽  
Exogenous Variables ◽  
Anfis Model ◽  
Load Forecast ◽  
Forecasting Models ◽  
Power Company ◽  
Ex Post ◽  
Daily Load ◽  
Selection Of

Forecasting of daily loads is crucial for the Distribution System Operators (DSO). Contemporary short-term load forecasting models (STLF) are very well recognized and described in numerous articles. One of such models is the Adaptive Neuro-Fuzzy Inference System (ANFIS), which requires a large set of historical data. A well-recognized issue both for the ANFIS and other daily load forecasting models is the selection of exogenous variables. This article attempts to verify the statement that an appropriate selection of exogenous variables of the ANFIS model affects the accuracy of the forecasts obtained ex post. This proposal seems to be a return to the roots of the Polish econometrics school and the use of the Hellwig method to select exogenous variables of the ANFIS model. In this context, it is also worth asking whether the use of the Hellwig method in conjunction with the ANFIS model makes it possible to investigate the significance of weather variables on the profile of the daily load in an energy company. The functioning of the ANFIS model was tested for some consumers exhibiting high load randomness located within the area under supervision of the examined power company. The load curves featuring seasonal variability and weekly similarity are suitable for forecasting with the ANFIS model. The Hellwig method has been used to select exogenous variables in the ANFIS model. The optimal set of variables has been determined on the basis of integral indicators of information capacity H. Including an additional variable, i.e., air temperature, has also been taken into consideration. Some results of ex post daily load forecast are presented.

scholarly journals Macroscopic and Multi-Scale Models for Multi-Class Vehicular Dynamics with Uneven Space Occupancy: A Case Study

Axioms ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 102
Author(s):  
Maya Briani ◽  
Emiliano Cristiani ◽  
Paolo Ranut
Keyword(s):  
Road Network ◽  
Real Data ◽  
Second Order ◽  
Heavy Vehicles ◽  
First Order ◽  
Multi Scale ◽  
Stop And Go ◽  
Scale Models ◽  
Road Space

In this paper, we propose two models describing the dynamics of heavy and light vehicles on a road network, taking into account the interactions between the two classes. The models are tailored for two-lane highways where heavy vehicles cannot overtake. This means that heavy vehicles cannot saturate the whole road space, while light vehicles can. In these conditions, the creeping phenomenon can appear, i.e., one class of vehicles can proceed even if the other class has reached the maximal density. The first model we propose couples two first-order macroscopic LWR models, while the second model couples a second-order microscopic follow-the-leader model with a first-order macroscopic LWR model. Numerical results show that both models are able to catch some second-order (inertial) phenomena such as stop and go waves. Models are calibrated by means of real data measured by fixed sensors placed along the A4 Italian highway Trieste–Venice and its branches, provided by Autovie Venete S.p.A.

scholarly journals Short-Term Fuzzy Load Forecasting Model Using Genetic–Fuzzy and Ant Colony–Fuzzy Knowledge Base Optimization

2018 ◽  
Vol 8 (6) ◽  
pp. 864 ◽  
Author(s):  
Murat Luy ◽  
Volkan Ates ◽  
Necaattin Barisci ◽  
Huseyin Polat ◽  
Ertugrul Cam
Keyword(s):  
Knowledge Base ◽  
Load Forecasting ◽  
Ant Colony ◽  
Forecasting Model ◽  
Short Term ◽  
Fuzzy Knowledge

A hybrid fuzzy modeling method for short-term load forecasting

2000 ◽  
Vol 51 (3-4) ◽  
pp. 221-232 ◽  
Author(s):  
P.A. Mastorocostas ◽  
J.B. Theocharis ◽  
S.J. Kiartzis ◽  
A.G. Bakirtzis
Keyword(s):  
Load Forecasting ◽  
Fuzzy Modeling ◽  
Modeling Method ◽  
Short Term ◽  
Short Term Load Forecasting

scholarly journals Decision to paving solutions in road infrastructures based on life-cycle assessment

2016 ◽  
Vol 11 (1) ◽  
pp. 43-52 ◽  
Author(s):  
Maria de Lurdes Antunes ◽  
Vânia Marecos ◽  
José Neves ◽  
João Morgado
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Decision Process ◽  
Life Cycle Cost ◽  
Road Network ◽  
Construction Costs ◽  
Road Pavement ◽  
Pavement Structures ◽  
Using Data ◽  
Term Performance

The construction and maintenance of a road network involve the expenditure of large budgets. In order to optimize the investments in road infrastructures, designers and decision makers should have the instruments to make the most suitable decision of paving solutions for each particular situation. The life-cycle assessment is an important tool of different road pavement solutions with this purpose. This paper presents a study concerning the life-cycle cost analysis of different flexible and semi-rigid paving alternatives, with the objective to contribute for a better support in the decision process when designing new pavement structures. The analysis was carried out using data on construction costs of certain typical pavement structures and taking into consideration appropriate performance models for each type of structure being selected. The models were calibrated using results from long term performance studies across Europe and the maintenance strategies considered have taken into account the current practice also found in the European context. Besides the life-cycle administration costs, the proposed methodology also deals with user and environmental costs through its inclusion in the decision process using multi-criteria analysis. It was demonstrated that this methodology could be a simple and useful tool in order to achieve the most adequate paving solutions of a road network, in terms of construction and maintenance activities, based simultaneously on technical, economic and environmental criteria.

scholarly journals ANALISIS TEBAL PERKERASAN JALAN RAYA MAGELANG-PURWOREJO KM 8 SAMPAI KM 9 MENGGUNAKAN METODE BINA MARGA 1987

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Sudarno Sudarno ◽  
Lulut Fadhilah ◽  
Achmad Afif ◽  
Siti Nurobingatun ◽  
Heru Hariyadi ◽  
...  
Keyword(s):  
Carrying Capacity ◽  
Secondary Data ◽  
Traffic Load ◽  
Cone Penetrometer ◽  
The Road ◽  
Dynamic Cone Penetrometer ◽  
Road Pavement ◽  
Central Java ◽  
Key Word ◽  
Pavement Overlay

<p>Abstrak. The Highway that connect Magelang Purworejo is one of the Collector roads in Central Java. Magelang-Purworejo’s Highway has a fairly high traffic load, based on a survey conducted by LHR in 2017 of 4392 vehicles. A high enough amount of LHR causes the road to damage the hair cracked. Based on the above, the thickness of the pavement or overlay is planned. This plan begins with a survey of the number of passing vehicles for twenty-four hours (LHR), then surveying the carrying capacity of ground using DCP tools, then measuring the skill of using digital teodholit. Then look for references and secondary data in the form of traffic growth, rainfall data and road class data. After all the data obtained then calculated the thickness of road pavement using the method of Bina Marga 1987. Based on these calculations obtained the required re-layer is 3 cm.</p><p><br />Key word: road pavement, overlay, dynamic cone penetrometer</p>

Computer Service Support at Glenview Hospital

2011 ◽  
pp. 387-400
Author(s):  
Martha Garcia-Murillo ◽  
Paula Maxwell ◽  
Simon Boyce ◽  
Raymond St. Denis ◽  
William Bistline
Keyword(s):  
Knowledge Base ◽  
Data Entry ◽  
Computer Users ◽  
Help Desk ◽  
Staff Members ◽  
Service Support ◽  
Self Help ◽  
Information Center ◽  
The Web ◽  
Selection Of

This case focuses on the challenges of managing a help desk that supports computer users. There are two main technologies that the Information Center (IC) uses to provide this service: the call distributing system and the knowledge base, which is also available on the Web. The choice of technologies affected the service provided by the help desk staff. Specifically, the call distributing system was unable to provide enough information regarding the number of calls answered, dropped, and allocated among the different staff members. The hospital knowledge base, on the other hand, is created based on peoples documentation of the problem and selection of keywords, which has led to inconsistencies in the data entry. One of the management challenges for the Information Center is to foster self-help and minimize the number of requests to the IC staff. This case presents the difficulties and some of the initiatives that the IC has considered to solve these problems.

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