scholarly journals Investigation of recreational vehicles maneuverability on forest roads by computer-aided driving analysis

2016 ◽  
Vol 11 (2) ◽  
pp. 111-119 ◽  
Author(s):  
Mustafa Akgul ◽  
Murat Demir ◽  
Tolga Ozturk ◽  
Hakan Topatan ◽  
Y. Emre Budak

Forest road planning is a time-consuming and complicated process both because it requires environmentfriendly road building, and due to the requirement to observe economic costs. This costs will be increase depending on maneuverability requirements of vehicle dimension. The main aim of this study is to analyze maneuverability of recreational vehicles on forest roads that primarily serve utilization of vehicles intended for production as well as geometrical characteristics of roads on computer environment. Both dynamic horizontal driving analysis and dynamic vertical driving analysis can be made with Autopath driving analysis module of Plateia 2013 software. Computer-aided horizontal driving analysis, which is used in examination of opportunities for utilization of available roads by different vehicle types, appears as an effective method for the decision maker in consideration of geometrical standards of vehicles during decision-making process. Graphical report is another output of driving analysis which visually presents vehicle maneuverability. In this context, Maneuverability of automobile, midibus and bus were analyzed on forest road with 4 m platform width. As a results of this study, it was concluded that computer-aided driving analysis is a beneficial tool in decision making process for re-planning of forest roads. As a consequence, it is considered that driver safety, as well as project costs, would increase by utilization of driving analysis during forest road planning and design.

2012 ◽  
Vol 50 (No. 5) ◽  
pp. 243-247
Author(s):  
M. Kašková

The basic condition of forest management development is the accessibility of the forest. A design of the forest road network in relation to all-society functions of forests has been made in the catchment of the Vilčok stream. The catchment is situated in Protected Landscape Area Beskydy. The method Quantification and quantitative evaluation of functions of forests as a basis for their evaluation (Vyskot et al. 2003) was used for the design. This method can be applied to road planning. It can serve as another component in the decision-making process of the planning of forest road construction.


1981 ◽  
Vol 20 (04) ◽  
pp. 202-206 ◽  
Author(s):  
Ch. P. Peev ◽  
S. Kaihara

Different diagnostic rules for computer-aided diagnosis are based on different mathematically precise statistical models. In practice, however, the medical data cannot meet the requirements set for the models and, in some cases, the model precision loses its advantages. On the other hand, physicians make their decisions without mathematical precision according to some statistics based on their own experiences.In this study, the physician’s process of estimating prognosis of diseases was analyzed and a method for estimating prognosis based on the physician’s decision-making process was proposed. Problems such as collection of informative symptoms, their estimation and weighting, and physician’s decision were considered. The decisionmaking function obtained from the analysis was applied for estimating the prognosis of cerebrovascular diseases. The choice of informative symptoms was based on Kullback’s information measure. Error estimation was made by using the minimum empirical risk method. The proposed method seemed to provide a smaller error rate, as compared to discriminant analysis under identical conditions (same sample, same informative symptoms).


2009 ◽  
Vol 625 ◽  
pp. 29-34
Author(s):  
Jose L. Diéguez ◽  
G. Araújo ◽  
E. Ares ◽  
A. Pereira ◽  
J.A. Pérez ◽  
...  

With the necessity to improve the teaching techniques of the processing technologies, in the present paper is showed the development and implantation of a application software that will serve to aid the student of the electro discharge machining process in the decision making process planning this non-conventional manufacture method. This application software manages the totality of the electro discharge machining process, in the die sinking case, by means of the creation of a data base with the necessary parameters of machining. To do these specific tasks, this application makes the data acquisition in analytical form of the machining values that the student tries to reach and has also a graphical environment form to define the geometry of the wished cavity. Finally it exposes the results in a didactic form expressed in a sheet of manufacture operations..


2008 ◽  
Vol 15 (1) ◽  
pp. 42-51 ◽  
Author(s):  
Piotr Kamiński ◽  
Wiesław Tarełko

Management of assignment of operational tasks realized in ship power plant The frequent cause of ships' detentions by port authorities are abnormalities of ship power plant functioning. Each extended ship lay time in port results in waste of ship operating time thus costs rise to shipowners. This is connected with improper ship power plant management. In order to avoid this, a ship engineer should have at his disposal computer aided system supporting him in managing of ship power plant. Such a system can be worked out on condition that mathematical formula which represents the decision - making process of an engineer has been built. The present work shows approache to the problem according to the situation in which the engineer is made to take certain decisions. In formulation of the most substantial operating states of a ship like lay time in harbour and sea voyage the ‘knapsack algorithm’ was applied. For both approaches objective function was formulated.


2020 ◽  
Vol 53 (383) ◽  
pp. MISC6-MISC7
Author(s):  
Nadia Giuffrida

The decision-making process of transport projects is very complex, especially for public administrations which have to take into account often incomparable criteria of judgment. In addition, in order to achieve a good social sharing and robustness of the decision, policy makers have to include in the process not only the transport planning experts but also the stakeholders of the community. The purpose of this study is to propose an evaluation framework to support the decision making process, able to allow public participation in the assessment of transport planning and design scenarios while, at the same time, ensuring a high level of technical quality of the final decision. The designed framework includes a method to analyze monetary and non-monetary parameters, easily understandable for all decision makers. It is based on the application of Multi Criteria Decision Analysis (MCDA) techniques, an evaluation process that can take into account different quantitative and qualitative objectives and criteria; in order to favor public participation, the implementation of this technique takes advantage of Geographic Information System (GIS) for its ability to easily represent the impact of spatially based alternative project scenarios. The analysis of several case studies on transport planning and design scenarios allowed to assess the level of implementation of the three main ingredients of the framework: MCDA, GIS and public participation.


Author(s):  
Wieslaw Tarelko

This paper deals with modelling issues of the decision-making process relating to design for maintainability of complex technical items. Especially, we presented the formal notation of a decision-making system, its elements and functions, and general description as well. Moreover, some application examples of design for the maintainability of such complex technical items as the ship power plants are presented. For development of the decision-making system, we applied a concept of the Mestrovic’s general system. Based on this system, we have worked out the computer-aided system called Maintainability Design System for ship power plants.


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