Wyniki wyszukiwania - BazTech

1

Seeking the best practices of assessment in maritime simulator training

Tusher H. M., Nazir S., Ghosh S., Rusli R.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

|

2023

|

Vol. 17 No. 1

105--114

EN

Simulator-based training has become an integral part of Maritime education, and its effectiveness hinges on the use of appropriate assessment protocols. Despite the existence of several subjective and objective assessment techniques, instructors face difficulties in selecting and implementing the best practices that fit different learning contexts. The contextualized utility of the available assessment techniques further complicates the contexts. This study adopts a systematic literature review approach to comprehensively analyse available assessment techniques employed in maritime simulator training and to elicit their relationship with the desired learning outcomes. The study also presents a nuanced understanding of the advantages and limitations of the identified assessment techniques. Further, the state-of-the-art of assessment methods is discussed along with a few proposals for the future considering both research and practical implications. The findings of this study are expected to provide valuable guidance to maritime instructors in selecting and implementing appropriate assessment techniques that align with desired learning outcomes in simulator training.

2

Ocena ryzyka robót dodatkowych w budowie infrastruktury kolejowej

Leśniak Agnieszka, Janowiec Filip

Materiały Budowlane

|

2022

|

nr 10

68--70

PL

Artykuł prezentuje autorskie podejście do oceny ryzyka robót dodatkowych w przedsięwzięciach kolejowych. Opracowana baza danych posłużyła do budowy i kalibracji modelu w postaci sieci bayesowskiej. Zdefiniowano kluczowe zdarzenia dotyczące robót dodatkowych. W przypadku każdego z nich określono warianty w węzłach sieci i prawdopodobieństwo ich wystąpienia. Zaproponowano 3 poziomy ryzyka. Przekroczenie przyjętego poziomu referencyjnego oznacza ryzyko nieakceptowalne i wymaga podjęcia działań zapobiegawczych.

EN

This article presents a proprietary approach to the risk assessment of additional works in the railway construction projects. The developed database was used to build and calibrate the model as a Bayesian network. The key events causing additional works were defined. Variants in nodes of network and probability of occurrence were determined for each of them. Three levels of risk were proposed. Exceeding the defined reference level means an unacceptable risk and requires taking preventive actions.

3

Analysis of the impact of application of fuels with addition of biocomponents on functioning of transport means

Muślewski Łukasz, Markiewicz Marietta, Landowski Bogdan

Journal of KONBiN

|

2020

|

Vol. 50, iss. 4

1--18

EN

The study describes a method and a model for assessment of the impact of addition of fatty acid methyl esters to fuel oil on selected parameters of transport means. For this purpose, criteria for assessment of operational parameters of the analyzed mixture have been identified. A model has been developed to find out how the values of the analyzed parameters reflect the state of transport means powered by fuel oil mixtures and methyl esters of fatty acids. Ten operational parameters have been accepted for the research object description. The parameter values were measured depending on the analyzed mixture composition. The obtained results allowed to determine the components of the object state vector. The developed model has been verified by application of the method of mean fuzzy diagram.

PL

W pracy opisano metodę i zbudowano model ocenowy wpływu dodatku estrów metylowych kwasów tłuszczowych do oleju napędowego na wybrane wartości parametrów użytkowych środków transportowych. Wyznaczono kryteria oceny stanu badanych parametrów i mieszanek oraz zbudowano model, w którym badane wartości parametrów odzwierciedlają stan środków transportu zasilanych takimi mieszankami. Dokonano pomiaru wartości tych parametrów, w zależności od składu badanej mieszanki. Wyniki oceny pozwoliły na wyznaczenie poszczególnych składowych wektora stanu obiektu. Opracowany model zweryfikowano metodą wykresów średnich rozmytych.

4

Vulnerability analysis in critical infrastructures: a methodology

Ferreira António

Security and Defence Quarterly

|

2019

|

Vol. 24, No. 2

65--86

EN

Vulnerability assessment is a crucial aspect for the development of methodologies to define the levels of protection in critical infrastructures. Throughout this research, we discussed the concept of vulnerability and methodologies and processes for its assessment in critical infrastructures due to a terrorist threat. The research focused on the development of an analysis model, exploring a multi-criteria decision method, in order to limit the risks to the maximum extent possible.Through a qualitative research methodology, in which we applied an analysis model based on the Threat and Infrastructure dimensions and their respective factors, we verified that the vulnerability of a critical infrastructure consists in the probability of the success of an attack, conducted by a threat - properly identifi ed, characterised, analysed and categorised - against an infrastructure with certain characteristics, which value is defi ned by the user and aggressor’s point of view. The construction of an algorithmic model for vulnerability assessment, complemented by tools to support the calculations and records, allows, through a rational, scientific and algebraic process, a qualitative analysis of factors to be transformed into measurable and quantifi able values, whose algebraic operation integrates them into a final result that expresses, as a percentage, the degree of vulnerability of a critical infrastructure facing a terrorist threat.

5

A decision support tool for a walkable integrated neighbourhood design using a multicriteria decision-making method.

Keyvanfar A., Shafaghat A., Lamit H.

Zeszyty Naukowe. Transport / Politechnika Śląska

|

2018

|

z. 100

45--68

EN

Growing concern about transportation emissions and energy security has persuaded urban professionals and practitioners to pursue non-motorized urban development. They need an assessment tool to measure the association between the built environment and pedestrians’ walking behaviour more accurately. This research has developed a new assessment tool called the Walkable Integrated Neighbourhood Design (WIND) support tool, which interprets the built environment’s qualitative variables and pedestrians’ perceptual qualities in relation to quantifiable variables. The WIND tool captures and forecasts pedestrians’ mind mapping, as well as sequential decision-making during walking, and then analyses the path walkability through a decision-tree-making (DTM) algorithm on both the segment scale and the neighbourhood scale. The WIND tool measures walkability by variables clustered into five features, 11 criteria and 92 subcriteria. The mind-mapping analysis is presented in the form of a ‘Walkability_DTM-Mind-mapping sheet’ for each destination and the overall neighbourhood. The WIND tool is applicable to any neighbourhood cases, although it was applied to the Taman Universiti neighbourhood in Malaysia. The tool’s outputs aid urban designers to imply adaptability between the neighbourhood environment and residents’ perceptions, preferences and needs.

6

The analysis and evaluation assessment of safety of selected types of exploitation systems means of transport

Muślewski Ł., Bojar P., Muciok Ł., Lewalski M.

Journal of KONBiN

|

2015

|

No. 1 (33)

197--208

EN

In a situation of increasing the supply of means of individual transport and not capable of following the development of infrastructure, an important issue is the issue of ensuring adequate levels of efficiency, safety and the competitiveness of the operation of the exploitation of public transport services. Factors affecting the safe operation pending exploitation systems of vehicles, in a differentiated way affect the level of safety provided services in smaller cities - up to 100 thousand inhabitants, with respect to the cities which are agglomerations of more complex structure, which are cities the number to 500 thousand inhabitants. This paper attempts to analyze and evaluate the safety of the operation of the public transport services exploitation, on the basis of the same assessment criteria, comparing two different sized urban areas.

PL

W sytuacji wzrastającej podaży środków transportu indywidualnego i nie nadążającym za nim rozwojem infrastruktury, istotnym zagadnieniem staje problematyka zapewnienia odpowiedniego poziomu efektywności, bezpieczeństwa oraz konkurencyjności działania systemów eksploatacji środków transportu miejskiego. Czynniki wpływające na bezpieczeństwo działania rozpatrywanych systemów eksploatacji środków transportowych, w zróżnicowany sposób wpływają na poziom bezpieczeństwa realizowanych usług w mniejszych miastach - do 100 tyś. mieszkańców, względem miast stanowiących aglomeracje, o bardziej skomplikowanej strukturze, jakimi są miasta o liczbie do 500 tyś. mieszkańców. W pracy podjęto próbę analizy i oceny bezpieczeństwa działania systemów eksploatacji środków transportu miejskiego, na podstawie tych samych kryteriów ocenowych, porównując dwa różnej wielkości obszary miejskie.

7

Bezpieczeństwo jako kryterium eksploatacji środków transportu

Bojar P., Migawa K.

Logistyka

|

2014

|

nr 3

638--643

PL

Identyfikacja wartości brzegowych i cech, które opisują bezpieczeństwa działania systemu jest kluczowym problemem dla oceny bezpieczeństwa działania systemu. W artykule, przedstawiono model oceny bezpieczeństwa dowolnego systemu transportowego. Przedstawiony model stanowi nowatorskie podejście do oceny systemów transportowych z punktu widzenia kryterium jego bezpieczeństwa. W modelu tym zakłada się cztery stany bezpieczności systemu. Pierwszy stan intencjonalny, który odzwierciedla sytuację bez wypadków i kolizji drogowych oraz poszkodowanych w tych wypadkach. Drugi stan to stan akceptowalny, w stanie tym występują kolizje drogowe, czyli na skutek zaistniałych zdarzeń nie ma ofiar są tylko straty materialne. Stan graniczny to stan w którym doszło do wypadku drogowego lecz na jego skutek wystąpiły tylko osoby ranne, ostatni z rozpatrywanych stanów to stan krytyczny w którym zaistniały wypadki drogowe i zginęła co najmniej jedna osoba. W pracy wyznaczono prawdopodobieństwa dla zbudowanego łańcucha Markowa.

EN

Identification of the limit values and characteristics that describe the security of the system is a key concern for the safety assessment of the system. The article presents a model safety evaluation of any transport system. The model is an innovative approach to the evaluation of transport systems from the point of view of its safety. In this model assumes four states system safety. The first intentional state, which reflects the situation without road accidents and collisions and victims in these cases. The second condition is a condition acceptable, in this state there are road collisions, or as a result of events occurring no people injured, only material losses. Limit state is a condition in which the accident occurred on the road but its effect occurred person injured, the last of the concerned states is a critical state in which accidents occurred and killed at least one person. In the study, the probability of the constructed Markov chain.