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Search results for: SURROGATE SAFETY MEASURES
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PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
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Uncertainty assessment in the safety and security oriented risk analyses
PublicationW artykule przedstawiono uwzględnienie oceny niepewności w procesie związanym z analizą ryzyka i analizą bezpieczeństwa oraz ochroną informacji. Przedstawiona została koncepcja oceny bezpieczeństwa i zarządzania ryzykiem z uwzględnieniem analizy warstw zabezpieczeń LOPA. W artykule nakreślono wyzwania związane z integracją podejścia oceny bezpieczeństwa (safety) i ochrony informacji (security) w projektowaniu systemów zabezpieczeń...
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Trace Metal Contamination of Bottom Sediments: A Review of Assessment Measures and Geochemical Background Determination Methods
PublicationThis paper provides an overview of different methods of assessing the trace metal (TM) contamination status of sediments affected by anthropogenic interference. The geochemical background determination methods are also described. A total of 25 papers covering rivers, lakes, and retention tanks sediments in areas subjected to anthropogenic pressure from the last three years (2019, 2020, and 2021) were analysed to support our examination...
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Atomistic Surrogate-Based Optimization for Simulation-Driven Design of Computationally Expensive Microwave Circuits with Compact Footprints
PublicationA robust simulation-driven design methodology for computationally expensive microwave circuits with compact footprints has been presented. The general method introduced in this chapter is suitable for a wide class of N-port un-conventional microwave circuits constructed as a deviation from classic design solutions. Conventional electromagnetic (EM) simulation-driven design routines are generally prohibitive when applied to numerically...
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Multimode, multiparametric surrogate models for fast design of waveguide components.
PublicationPrzedstawiona została efektywna technika tworzenia wieloparametrycznych mo-deli zastępczych na podstawie wyników symulacji pełnofalowej przy wykorzy-staniu metody Cauchy`ego wielu zmiennych. Metoda pozwala na automatyczny wy-bór rzędu modelu i minimalizuje liczbę koniecznych analiz pełnofalowych. Te-chnika ta jest wykorzystana do tworzenia modeli uogólnionej macierzy rozpro-szenia.
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Temporal Changes in Complexity of Cardiovascular Regulation during Head-Up Tilt Test by Entropic Measures of Fluctuations of Heart Period Intervals and Systolic Blood Pressure
PublicationTemporal changes in complexity of cardiovascular regulation during head-up tilt test by entropic measures of fluctuations of heart period intervals and systolic blood pressure
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Application of the LifeRoSE method in funcionality evaluation of road safety equipment
PublicationThe article presents a mathematical model of the life cycle estimation method of road safety equipment. Then the model was adjusted to estimate the life cycle costs of the chosen horizontal road marking. Using the LCC method, the functionality of the horizontal marking was evaluated in terms of efficiency, durability and economic effectiveness. The article also presents the impact of selected factors on the life cycle costs of...
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Driver Fatigue and Road Safety on Poland's National Roads
PublicationThis paper presents an overview of factors causing driver fatigue as described in the literature. Next, a traffic crash database for 2003–2007 is used to identify the causes, circumstances and consequences of accidents caused by driver fatigue on Poland’s national roads. The results of the study were used to build a model showing the relationship between the concentration of road accidents and casualties, and the time of day. Finally,...
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Driver Fatigue and Road Safety on Poland’s National Roads
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Road infrastructure safety inspection (Students course) - Erasmus + European Road Safety Partnership EuroS@P
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Road infrastructure safety inspection (Specialists course) - Erasmus + European Road Safety Partnership EuroS@P
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Overview of Knowledge Management in Occupational Safety, Health, and Ergonomics
PublicationOccupational safety, health, and ergonomics (OSHE) are strategic pillars of contemporary organizations. In order to provide safer workplace, it is vital to manage the organizational knowledge, so that effective decision making along with absolute compliance to standards can be executed. The critical challenge for OSHE in modern industry is management of existing individual knowledge (experience), structure knowledge, and organizational...
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Impact of Intelligent Transport Systems Services on the Level of Safety and Improvement of Traffic Conditions
PublicationThe positive effects of the services of Intelligent Transport Systems (ITS) on the level of transport systems operation was confirmed by long-term studies conducted, inter alia, in the USA, Japan and Europe. Benefits resulting from the application of ITS services can be presented through performance indicators. The indicators represent in a numerical or qualitative manner to what extent ITS services can contribute to improving...
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Certification program in Road Infrastructure Safety Management - Erasmus + European Road Safety Partnership EuroS@P
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On the safety of technical sphere.
PublicationTechnika daje nam dobra użyteczne i zarazem generuje rozmaite zagrożenia.Przedstawiono analizę tych zagrożeń na przykładzie ogólnie potraktowanego systemu realizacji potrzeb. Opisana została natura relacji występujących między tym systemem a otoczeniem oraz w jego wnętrzu. Dalej przedstawiono klasy modeli predykcji strat, które mogą powstać w wyniku uwolnienia się omawianych zagrożeń.
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Invariant measures for interval translations and some other piecewise continuous maps
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Triple-objective models for portfolio optimisation with symmetric and percentile risk measures
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Using Probabilistic Availability Measures for Predicting Targeted Attacks on Network Nodes
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Network Protection Against Node Attacks Based on Probabilistic Availability Measures
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Dynamic OWL Ontology matching Using Lexical Wordnet-based Measures
PublicationOntologies are often used as a means of describing knowledge and the domain of operation of modern applications. S need arises for the ability to quickly match those ontologies to enable interoperability of such systems. This paper presents an extension to Noy and McGuiness ontology construction methodology which should improve ontology interoperability and a lexicon-based algorithm for merging and aligning of such ontologies stored...
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Safety assessment of a concrete viaduct damaged by vehicle impact and an evaluation of the repair
PublicationDamage to lower parts of viaducts caused by impact from under-passing high vehicles is relatively frequent. One such incident, in which a viaduct was damaged by the impact from a truck with an improperly assembled hydraulic crane, is considered in this work. The analysis is based on a detailed object damage evaluation, 3D laser scanning, and numerical simulations. The aim of the study is to accurately model the vehicle impact into...
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International Journal of Occupational Safety and Ergonomics
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Surrogate-assisted EM-driven miniaturization of wideband microwave couplers by means of co-simulation low-fidelity models
PublicationThis article proposes a methodology for rapid design optimization of miniaturized wideband couplers. More specifically, a class of circuits is considered, in which conventional transmission lines are replaced by their abbreviated counterparts referred to as slow-wave compact cells. Our focus is on explicit reduction of the structure size as well as on reducing the CPU cost of the design process. For the sake of computational feasibility,...
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Safety Assessment of the Regional Warmia and Mazury Road Network Using Time-Series Analysis
PublicationWarmia and Mazury still belongs to the areas with the smallest transport accessibility in Europe. Unsatisfactory state of road infrastructure is a major barrier to the development of the regional economy, impacting negatively on the life conditions of the population. Also in terms of road safety Warmia and Mazury is one of the most endangered regions in Poland. The Police statistics show that beside a high pedestrian risk observed...
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Novel proposal for V2X systems and WBAN cooperation to improve road safety
PublicationIn this paper, a novel proposal of the automotive Vehicle-to-Everything system solution is presented. In this proposal, there are included the Machine to Machine type communication system and the sensor system based on a short-range the Wireless Body Area Network communication. The aim of this paper is the analysis of the model for communication, especially its architecture and signals structure for the proposed solution. The use...
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Expert systems in assessing the construction process safety taking account of the risk of disturbances
PublicationThe objective of the paper is to present the issue of safety manage-ment during the construction process. Threats in the form of disturb-ances may occur in the preparatory phase, during the execution of the construction project and also during its operational use. The arti-cle presents the concept of applying the methodology based, among others, on Learning Bayesian Networks, Artificial Neural Networks and Support Vector Machine,...
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Fast multiplexer cad using surrogate models for channel filters synthesis
Publicationartykuł przedstawia metodę szybkiego projektowania multiplekserów mikrofalowych wykorzystującą dokładne modele zastępcze na etapie projektowania kanałów. przedstawiony został przykład trój-kanałowego multipleksera z filtrami dwurodzajowymi.
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IDENTIFICATION AND COMPARATIVE ANALYSIS OF FACTORS INFLUENCING ROAD SAFETY IN US REGIONS AND IN POLISH VOIVODESHIPS
PublicationAnalyses of road safety at national level have been run for many years and large number of publications concerning them appeared so far. How interdisciplinary the issue is, has been shown by literature studies done by the author of the paper. It appears that economists, mathematicians, doctors as well as engineers have studied the issue. It is not an easy one, as results of many analyses lead to conflicting conclusions and...
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Assessment of risks introduced to safety critical software by agile practices - a software engineer's perspective
PublicationIn this article we investigate the problem of applying agile practices into safety-critical projects.The goal of our research is to investigate potential benefits from introducing agile practicesinto safety-critical environment and to present a solution providing for balancing agileapproach with more disciplined assurance techniques, bringing the best of the two worlds together.In the article we present the supporting ideas such...
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Maritime Communication and Sea Safety of the Future - Machnine-type 5G Communication Concept
PublicationThe article presents the concept of a system based on 5G network and M2M communication increasing maritime safety. Generally, the focus was on presenting a proposal for a hierarchical, hybrid, cooperative system with M2M communication coordinated with BAN networks. The possi-ble applications of M2M communication at sea were also presented.
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Towards the assessment of potential impact of unmanned vessels on maritime transportation safety
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ON ESTIMATION OF OCCUPANT SAFETY IN VEHICULAR CRASHES INTO ROADSIDE OBSTACLES USING NON-LINEAR DYNAMIC ANALYSIS
PublicationThe article describes a comparison of two general methods of occupants safety estimation based on a numerical examples. The so-called direct method is mainly based on the Head Injury Criterion of a crash test dummy in a vehicle with passive safety system while the indirect method uses a European standards approach to estimate impact severity level. Numerical simulations in LS-DYNA have been conducted.
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The impact of security aspects on functional safety analysis = Wpływ aspectów ochrony informacji na wyniki analiz bezpieczeństwa funkcjonalnego
PublicationIt can be said that a distributed control and protection system’s security level may have a significant impact on functional safety analyses and their results. However the issue of integrating those both aspects are difficult and usually is neglected during functional safety analyses. Known methods of functional safety analyses don’t take into consideration this kind of concept also. This paper discusses an attempt to integrate...
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Fibrinogen and d-dimer in contrasting relation with measures of wave reflection and arterial stiffness
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Regarding the “Tumour spillage of the pleomorphic adenoma of the parotid gland: A proposal for intraoperative measures”
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Statistic and probabilistic measures of diagnosis likelohood on the state of self-ignition combustion engines
PublicationW artykule zaproponowano, aby wiarygodność diagnozy o stanie technicznym silników o zapłonie samoczynnym była rozpatrywana jako losowa cecha tej diagnozy. Wykazano możliwość oceny wiarygodności diagnozy za pomocą liczb rzeczywistych z przedziału [0, 1]. Uzasadniono potrzebę rozróżniania wiarygodności diagnozy i trafności diagnozy. Wyprowadzono wzór na prawdopodobieństwo sformułowania prawidłowej diagnozy jako miary wiarygodności...
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Entropic Measures of Complexity of Short-Term Dynamics of Nocturnal Heartbeats in an Aging Population
PublicationTwo entropy-based approaches are investigated to study patterns describing differences in time intervals between consecutive heartbeats. The first method explores matrices arising from networks of transitions constructed following events represented by a time series. The second method considers distributions of ordinal patterns of length three, whereby patterns with repeated values are counted as different patterns. Both methods provide...
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Entropy Measures in the Assessment of Heart Rate Variability in Patients with Cardiodepressive Vasovagal Syncope
PublicationSample entropy (SampEn) was reported to be useful in the assessment of the complexity of heart rate dynamics. Permutation entropy (PermEn) is a new measure based on the concept of order and was previously shown to be accurate for short, non-stationary datasets. The aim of the present study is to assess if SampEn and PermEn obtained from baseline recordings might differentiate patients with various outcomes of the head-up tilt test...
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Human Factors and Functional Safety Analysis in Designing the Control Rooms of Industrial Hazardous Plants
PublicationIn this work some aspects of human factors and functional safety analysis in designing the control rooms of industrial hazardous plants are presented. The “defence in depth” (D-in-D) concept is outlined. Some designing issues of the alarm system (AS) with regard to human factors to be supported using the human reliability analysis (HRA) are discussed. The AS and decision support system (DSS), when properly designed, would contribute...
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Assessing the Effects of the Road Surface and Weather Conditions on Road Safety
PublicationWhen transport is analysed for its safe delivery the focus is mainly on assessing the safety of roads and the risk of undesired events. These include road accidents, an occurrence which is relatively rare and random. Randomness means that accidents depend on several factors which are partly deterministic (can be controlled) and partly stochastic (random and unpredictable). The set of crash contributing factors can be classified...
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Safety Qualification Process for an Autonomous Ship Prototype – a Goal-based Safety Case Approach
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Roads safety programmes as an effective tool for developing system-based road safety policies
PublicationW sytuacji niskiego poziomu bezpieczeństwa ruchu drogowego w Polsce, dążąc do realizacji rekomendacji Unii Europejskiej, Polska przyjęła ambitny cel zmniejszenia liczby ofiar śmiertelnych wypadków drogowych o 50% w okresie 2003-2013. Osiągnięcie tego celu wymaga podjęcia skoordynowanych działań wskazanych we wcześniej przygotowanych programach bezpieczeństwa ruchu drogowego. W artykule scharakteryzowano przyjęte w tych programach...
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Proposed method for estimating the costs of safety barrier life cycle
PublicationToday barrier types are frequently selected for their price with little regard for the total costs the structure will incur over its lifetime. One of the basic tools designed to manage road infrastructure is the life cycle cost method (LCC, Life cycle cost). It sums up the costs to plan, design, build, operate (use and maintain) and decommission a road structure. Having developed dynamically at the turn of the century the method...
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Abstract class method use on common characteristics of UE regions for better road safety management in these regions.
PublicationRoad Safety is the significant problem requiring still a lot of attention. Despite lots of actions for road fatalities reduction, in many countries or regions situation doesn't improve as good as in the other cases. Even if these actions are very similar. It is so difficult issue, that the answer why is that happens hasn't been found yet. In this paper authors focused on the road network of European regions, classified as NUTS...
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Electrical safety in medical locations
PublicationW artykule zwrócono uwagę na niezawodność zasilania i ochronę przeciwporażeniową w pomieszczeniach użytkowanych medycznie. Przedstawiono wymagania stawiane zasilaniu, zabezpieczeniom i obwodom sygnalizacji w tych pomieszczeniach, według norm międzynarodowych. Zaprezentowano zasady doboru zabezpieczeń ochronnych oraz przykładowe rozwiązanie zasilania sali operacyjnej w szpitalu.
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Road safety system in Poland
PublicationCelem niniejszego artykułu jest przedstawienie kluczowych dla poprawy brd elementów diagnozy stanu i systemu bezpieczeństwa w Polsce, które jednocześnie mogłyby wejść w zakres działań objętych Projektem ZEUS. Ocenę diagnozy wykonano poprzez porównanie z wzorcami z tych krajów, które od lat uważa się za liderów w zakresie bezpieczeństwa.
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Integrated system of transport safety
PublicationW styczniu 2007 Minister Nauki i Szkolnictwa Wyższego, na podstawie konkursu na projekt badawczy zamawiany PBZ 2/2006, podjął decyzję o przyznaniu prawa realizacji trzyletniego projektu pt. ''Zintegrowany system bezpieczeństwa transportu'' konsorcjum naukowemu w składzie: Politechnika Gdańska, Politechnika Śląska, Instytut Techniczny Wojsk Lotniczych w Warszawie oraz Akademia Morska w Szczecinie. Przedmiotem niniejszego referatu...
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Traffic Safety in the TRISTAR System
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Low-Cost Data-Driven Surrogate Modeling of Antenna Structures by Constrained Sampling
PublicationFull-wave electromagnetic (EM) analysis has become one of the major design tools for contemporary antenna structures. Although reliable, it is computationally expensive which makes automated simulation-driven antenna design (e.g., parametric optimization) difficult. This difficulty can be alleviated by utilization of fast and accurate replacement models (surrogates). Unfortunately, conventional data-driven modeling of antennas...
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Expedited Geometry Scaling of Compact Microwave Passives by Means of Inverse Surrogate Modeling
PublicationIn this paper, the problem of geometry scaling of compact microwave structures is investigated. As opposed to conventional structures (i.e., constructed using uniform transmission lines), re-design of miniaturized circuits (e.g., implemented with artificial transmission lines, ATSs) for different operating frequencies is far from being straightforward due to considerable cross-couplings between the circuit components. Here, we...