The EMITRANSYS model and the possibilities of its application for the analysis of the development of sustainable transport systems

Jacyna, Marianna; Żak, Jolanta; Gołębiowski, Piotr

doi:10.19206/ce-2019-440

Cited by 5 publications

(3 citation statements)

References 11 publications

(8 reference statements)

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“…Applying the presented approach to the assessment and analysis of other systems by assessing reliability or risk, as presented in the works [30][31][32], is also expected. To use the modeling presented here in various other types of technical system assessments, such as diagnostics [33], risk assessment related to road and rail signaling [27,34], and development-related applications [35], seems possible too.…”

Section: Iq Measurementioning

confidence: 99%

Determining Information Quality in ICT Systems

et al. 2021

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The article deals with the estimation of information quality (IQ) in information and communication technologies (ICT) systems. A number of recent publications were analyzed, as well as ISO standards concerning quality and information quality. Due to the limitations of the known methods of estimating IQ, the authors present their own proprietary concept based on multidimensional and multi-layer modeling using methods of estimating uncertainty. The modeling proposed in this publication uses sixteen dimensions of quality known from the literature. The features of dimensions are taken into account as another layer and information states as successive steps in the IQ model. An example of calculations is also presented in which the mathematical evidence method used in estimating the uncertainty is extended to the modeling of dependent elements. The article also presents a simulation based on the presented example. This simulation shows the assumed dependencies between the output and input values.

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Section: Iq Measurementioning

confidence: 99%

Determining Information Quality in ICT Systems

et al. 2021

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“…During the exploitation of power supply systems in transport telematics devices (PSSs in TTDs), there are many diverse external factors, whose impact means that each of the systems might stop being exploitable at a different moment after activation. In order to provide an appropriate level of security of operated transport services [1,2], solutions are introduced that enable increasing the value of probability of maintaining exploitability of the system. This article presents a reliability-exploitation and quality analysis of PSS in TTD.…”

Section: Introductionmentioning

confidence: 99%

Quality and Reliability-Exploitation Modeling of Power Supply Systems

et al. 2021

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This article describes the issues related to the analysis of the reliability-exploitation of power supply systems in transport telematics devices (PSSs in TTDs). This paper characterizes solutions, which are applied in supply systems, and describes a PSS in a TTD from a main source and a standby one. This enables determining the dependencies denoting the probabilities of the system staying in full ability state, safety threat state, and safety unreliability state. A quality analysis of the PSS in TTD was conducted, and the indicator value of the supply continuity quality was evaluated. This indicator allows the demonstration of continuity quality of power supply (CQoPS) dependency on many quality dimensions, not just reliability. An example demonstrates the calculation of CQoPS factor for both the main and the standby power supply, employing three observations, each influencing the quality. The presented considerations in the field of quality and reliability-exploitation modeling of a PSS can be applied as well in other public utility facilities (including those classified as critical infrastructure). The character of functions performed by critical infrastructure facilities demands an operating continuity of these systems at an appropriate level. The co-first authors of the article once again address the issue of determining CQoPS factor, this time on the basis of modeling using mathematical evidence. TTD is an example in this article, because the presented methods can be used in any kind of system, especially in the power source of critical systems.

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“…The method of determining the uncertainty to evaluate the continuity quality can also be employed in devices implemented in transport (e.g., rail traffic control systems) [19][20][21] or other areas associated with critical systems [22]. It is particularly important because the security level of transport services and the functioning of critical systems depend on this.…”

Section: Introductionmentioning

confidence: 99%

Method of Estimating Uncertainty as a Way to Evaluate Continuity Quality of Power Supply in Hospital Devices

et al. 2021

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The article presents issues related to the determination of the continuity quality of power supply (CQoPS) for hospital electrical devices. The model describing CQoPS takes into account power redundancy. The uncertainty modeling method based on the certainty factor (CF) of the hypothesis was used to establish the single-valued CQoPS factor. CQoPS modeling takes into account multidimensional quality models and physical stages of power. The quality models take into account seven dimensions that make up CQoPS (availability, appropriate amount, power supply reliability, power quality, assurance, responsiveness, security). The model of power stages includes five of these stages (power generation, delivery to recipient, distribution by recipient, delivery to device, power-consuming device). To date, when designing hospital power systems, the applied reliability indicators revealed limitations because they do not consider all the possible factors influencing the power continuity. Estimating the supply continuity quality with the use of the uncertainty modeling proposed in this article allows for taking into account all possible factors (not just reliability factors) that may affect supply continuity. The presented modeling offers an additional advantage, namely, it allows an expanded evaluation of the hospital supply system and a description using only one indicator. This fact renders the evaluation of the supply system possible for unqualified staff. At the end of the article, some examples of calculations and simulations are presented, thus showing that the applied methods give the expected results.

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The EMITRANSYS model and the possibilities of its application for the analysis of the development of sustainable transport systems

Cited by 5 publications

References 11 publications

Determining Information Quality in ICT Systems

Determining Information Quality in ICT Systems

Quality and Reliability-Exploitation Modeling of Power Supply Systems

Method of Estimating Uncertainty as a Way to Evaluate Continuity Quality of Power Supply in Hospital Devices

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