Academic literature on the topic 'Accident modelling'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Accident modelling.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Accident modelling"

1

MIKA, Otakar Jiří, and Pavel OTŘÍSAL. "Modelling of Accidental Impacts of Hazardous Chemical Substances in the Czech Republic." Challenges to national defence in contemporary geopolitical situation 2022, no. 1 (November 3, 2022): 135–42. http://dx.doi.org/10.47459/cndcgs.2022.16.

Full text
Abstract:
The issue of major chemical accidents in the Czech Republic is first mentioned from a historical point of view. The following are the main hazardous impacts of chemical accidents. The next part is a comparison of the accidental impacts of major emergencies, such as toxic leakage, explosion and fire, even with examples of several typical chemical substances. Some factors of the main hazardous chemicals with a focus on toxic substances are discussed in detail. The modelling of accident impacts is presented in the next section on a detailed comparison of the accident impacts of nine main industrial chemical toxicants. The article also draws attention to the serious danger of the possible misuse of toxic substances in particular for hostile acts of chemical terrorism.
APA, Harvard, Vancouver, ISO, and other styles
2

Chaudhari, Dvij. "Modelling Road Accident using Poisson regression Models." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (June 30, 2021): 4635–40. http://dx.doi.org/10.22214/ijraset.2021.35827.

Full text
Abstract:
The objective of this research is to evaluate the safety of multi-lane urban roads in India. In this paper, a generalised linear modelling technique is applied for the analysis of the Indian Highway's road accident. The features of road, speed, and traffic data are analysed in Surat on four-lane urban roads. A novel approach to the model of accident prediction for an urban highway is being proposed to include daily average travel (ADT) and average spot speed (AS). The model was developed as a reliant variable and significant variables such as chain width, intersection no, ADT, AS, as separate variables for accidents per kilometre.. The results of the model provide a better assessment of accidents on a multilateral urban road. Because road accidents are different, statistical models do not adequately capture the characteristics of each section. As a result, the results of Poisson regression were the opposite of these variables. There was also no statistically significant type of traffic control. Significant statistically at level 0.05. Accident locations were assessed by correlating the severity of the accident with different attributes. This investigation will contribute to improving urban road safety.
APA, Harvard, Vancouver, ISO, and other styles
3

Pasculescu, Vlad Mihai, Marius Cornel Suvar, Ligia Ioana Tuhut, and Laurentiu Munteanu. "Numerical modelling of hydrogen release and dispersion." MATEC Web of Conferences 342 (2021): 01004. http://dx.doi.org/10.1051/matecconf/202134201004.

Full text
Abstract:
Hydrogen is the most abundant element on earth, being a low polluting and high efficiency fuel that can be used for various applications, such as power generation, heating or transportation. As a reaction to climate change, authorities are working for determining the most promising applications for hydrogen, one of the best examples of crossborder initiative being the IPCEI (Important Project of Common European Interest) on Hydrogen, under development at EU level. Given the large interest for future uses of hydrogen, special safety measures have to be implemented for avoiding potential accidents. If hydrogen is stored and used under pressure, accidental leaks from pressure vessels may result in fires or explosions. Worldwide, researchers are investigating possible accidents generated by hydrogen leaks. Special attention is granted to the atmospheric dispersion after the release, so that to avoid fires or explosions. The use of consequence modelling software within safety and risk studies has shown its’ utility worldwide. In this paper, there are modelled the consequences of the accidental release and atmospheric dispersion of hydrogen from a pressure tank, using state-of-the-art QRA software. The simulation methodology used in this paper uses the “leak” model for carrying out discharge calculations. This model calculates the release rate and state of the gas after its expansion to atmospheric pressure. Accidental release of hydrogen is modelled by taking into account the process and meteorological conditions and the properties of the release point. Simulation results can be used further for land use planning, or may be used for establishing proper protection measures for surrounding facilities. In this work, we analysed two possible accident scenarios which may occur at an imaginary hydrogen refuelling station, accidents caused by the leaks of the pressure vessel, with diameters of 10 and 20 mm, for a pressure tank filled with hydrogen at 35 MPa / 70 MPa. Process Hazard Analysis Software Tool 8.4 has been used for assessing the effects of the scenarios and for evaluating the hazardous extent around the analysed installation. Accident simulation results have shown that the leak size has an important effect on the flammable/explosive ranges. Also, the jet fire’s influence distance is strongly influenced by the pressure and actual size of the accidental release.
APA, Harvard, Vancouver, ISO, and other styles
4

Yan, Linyang, and Sun-Woo Ko. "In-tunnel Accident Detection System based on the Learning of Accident Sound." Open Transportation Journal 15, no. 1 (May 21, 2021): 81–92. http://dx.doi.org/10.2174/1874447802115010081.

Full text
Abstract:
Introduction: Traffic accidents are easy to occur in the tunnel due to its special environment, and the consequences are very serious. The existing vehicle accident detection system and CCTV system have the issues of low detection rate. Methods: A method of using Mel Frequency Cepstrum Coefficient (MFCC) to extract sound features and using a deep neural network (DNN) to learn sound features is proposed to distinguish accident sound from the non-accident sound. Results and Discussion: The experimental results show that the method can effectively classify accident sound and non-accident sound, and the recall rate can reach more than 78% by setting appropriate neural network parameters. Conclusion: The method proposed in this research can be used to detect tunnel accidents and consequently, accidents can be detected in time and avoid greater disasters.
APA, Harvard, Vancouver, ISO, and other styles
5

Igene, Oseghale Osezua, and Christopher Johnson. "To Computerised Provider Order Entry system: A comparison of ECF, HFACS, STAMP and AcciMap approaches." Health Informatics Journal 26, no. 2 (July 16, 2019): 1017–42. http://dx.doi.org/10.1177/1460458219859992.

Full text
Abstract:
Different accident analytical approaches have been utilised in safety-critical industries for analysing accidents and formulating safety recommendations. This study presents a ‘health informatics’ case incident of a patient adversely affected due to a medication dosing error resulting from a combination of contributing factors including those relating to the Computerised Order Provider Entry System. A comparative study was carried out using selected accident analytical approaches: Human Factors and Classification System, System-Theoretic Accident Modelling and Processes and Accident Modelling. Each resulting output was compared using the model characteristic criteria developed by Underwood and Waterson. Safety recommendations developed based on the outputs from the models/methods were also compared for any similar findings. It was acknowledged that while accident models incorporating ‘systems thinking’ can prove to be beneficial for healthcare in providing insight on systemic factors, there is a need for improving the reliability and validity of these models. This particularly applies to Rasmussen’s Accident Modelling approach to be considered useful in the healthcare domain.
APA, Harvard, Vancouver, ISO, and other styles
6

Ma, Lu, Xuedong Yan, and Wenxin Qiao. "A Quasi-Poisson Approach on Modeling Accident Hazard Index for Urban Road Segments." Discrete Dynamics in Nature and Society 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/489052.

Full text
Abstract:
In light of the recently emphasized studies on risk evaluation of crashes, accident counts under specific transportation facilities are adopted to reflect the chance of crash occurrence. The current study introduces more comprehensive measure with the supplement information of accidental harmfulness into the expression of accident risks which are also named Accident Hazard Index (AHI) in the following context. Before the statistical analysis, datasets from various sources are integrated under a GIS platform and the corresponding procedures are presented as an illustrated example for similar analysis. Then, a quasi-Poisson regression model is suggested for analyses and the results show that the model is appropriate for dealing with overdispersed count data and several key explanatory variables were found to have significant impact on the estimation of AHI. In addition, the effect of weight on different severity levels of accidents is examined and the selection of the weight is also discussed.
APA, Harvard, Vancouver, ISO, and other styles
7

Bogalecka, Magda. "Modelling Consequences of Maritime Critical Infrastructure Accidents." Journal of KONBiN 49, no. 2 (June 1, 2019): 477–95. http://dx.doi.org/10.2478/jok-2019-0046.

Full text
Abstract:
Abstract The probabilistic general model of critical infrastructure accident consequences including the superposition of three models of the process of initiating events, the process of environment threats and the process of environment degradation is adopted to the maritime transport critical infrastructure. The general model is applied to this critical infrastructure accident with chemical release consequences identification and prediction. The model also includes the cost analysis of losses associated with these chemical releases. Further, under the assumption of the stress of weather influence on the ship operation condition, critical infrastructure accident losses are examined and the results are compared with the previous ones. Finally, the method of optimization are practically tested to the minimizing these losses and the procedures and the new strategy assuring lower environment losses of the considered critical infrastructure accidents are proposed.
APA, Harvard, Vancouver, ISO, and other styles
8

Al-Omari, Bashar H., and Eman S. Obaidat. "Analysis of Pedestrian Accidents in Irbid City, Jordan." Open Transportation Journal 7, no. 1 (February 22, 2013): 1–6. http://dx.doi.org/10.2174/1874447801307010001.

Full text
Abstract:
The numbers of people who are walking and bicycling continues to increase all over the world and pedestrian accidents are becoming a serious problem in the developed and developing countries. However, the problem is more severe in the developing countries, such as Jordan where pedestrians represented 32.5% of all traffic accident fatalities and 23.8% of all traffic accident injuries during the year 2010. This study aims at analyzing pedestrian accidents in Irbid city, as an example for urban areas in Jordan, based on a total of 1090 pedestrian accidents that have occurred in the City during the three years period (1999 - 2001). The analysis was based on pedestrian characteristics, driver characteristics, accident time, accident location, weather, road surface condition, illumination condition, vehicle characteristics, speed limit, accident severity, pedestrian faults, and driver faults. Geographic Information System (GIS) tool was used to locate all pedestrian accidents over the study area. The results of the study showed that the majority of pedestrian accidents have occurred at non-intersection locations, during clear and sunny weather, on dry surface, during daylight, and at low speed limits. Also, more pedestrian accidents have occurred during the afternoons, on Thursdays, and during July. The majority of involved drivers in pedestrian accidents were males, with private license type, driving private vehicles and committed the fault of “not giving priority to pedestrians”. The majority of pedestrian victims were males, children less than 15 years old, and hit by vehicles while crossing the road.
APA, Harvard, Vancouver, ISO, and other styles
9

Morreale, A. C., M. J. Brown, and S. M. Petoukhov. "PRELIMINARY METHODOLOGY FOR THE ANALYSIS OF THE NATIONAL RESEARCH UNIVERSAL REACTOR USING INTEGRATED SEVERE ACCIDENT MODELLING CODES." AECL Nuclear Review 4, no. 1 (June 1, 2015): 53–65. http://dx.doi.org/10.12943/anr.2014.00035.

Full text
Abstract:
The National Research Universal (NRU) Reactor is a multi-purpose research reactor located at Atomic Energy of Canada Limited (AECL) Chalk River Laboratories. The severe accident case for the NRU has been explored through deterministic and probabilistic safety analysis (PSA) including multi-level PSAs that detail the progression and consequences of a severe accident in the NRU. These previous calculations lack the interconnected and comprehensive features of a full severe accident modelling code that is now the standard for severe accident analysis of power reactors. It was of interest within AECL to evaluate modern severe accident modelling codes to the NRU reactor case to enhance the understanding of accident progression and predict the system damage and radiation release consequences of a severe accident, which is a very low probability event. The NRU is smaller and operates at a lower power than the large scale power reactors (e.g., pressurized heavy water reactors, pressurized water reactors, and boiling water reactors) that these codes were designed to analyze. Additionally, the NRU has a unique design different from the power reactors and several features relevant to severe accidents including filtered venting, large passive heat sinks, and a dispersion fuel design of uranium-silicide in an aluminum matrix. The major severe accident analysis codes available to AECL and their applicability to the NRU are explored in this paper. In addition, a preliminary strategy for employing the most applicable codes to the NRU for the purposes of severe accident modelling is proposed.
APA, Harvard, Vancouver, ISO, and other styles
10

Feizizadeh, Bakhtiar, Davoud Omarzadeh, Ayyoob Sharifi, Abolfazl Rahmani, Tobia Lakes, and Thomas Blaschke. "A GIS-Based Spatiotemporal Modelling of Urban Traffic Accidents in Tabriz City during the COVID-19 Pandemic." Sustainability 14, no. 12 (June 18, 2022): 7468. http://dx.doi.org/10.3390/su14127468.

Full text
Abstract:
The main aim of the present study was to investigate the spatiotemporal trends of urban traffic accident hotspots during the COVID-19 pandemic. The severity index was used to determine high-risk areas, and the kernel density estimation method was used to identify risk of traffic accident hotspots. Accident data for the time period of April 2018 to November 2020 were obtained from the traffic police of Tabriz (Iran) and analyzed using GIS spatial and network analysis procedures. To evaluate the impacts of COVID-19, we used the seasonal variation in car accidents to analyze the change in the total number or urban traffic accidents. Eventually, the sustainability of urban transport was analyzed based on the demographic and land use data to identify the areas with a high number of accidents and its respective impacts for the local residences. Based on the results, the lockdown measures in response to the pandemic have led to significant reductions in road traffic accidents. From the perspective of urban planning, the spatiotemporal urban traffic accident analysis indicated that areas with high numbers of elderly people and children were most affected by car accidents. As we identified the hotspots of urban traffic accidents and evaluated their spatiotemporal correlation with land use and demography characteristics, we conclude that the results of this study can be used by urban managers and support decision making to improve the situation, so that fewer accidents will happen in the future.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Accident modelling"

1

ANNA, RICARDO E. SILVA DE SANT. "ROTOR ACCIDENT ANALYSIS: MODELLING AND SIMULATION." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=11885@1.

Full text
Abstract:
A Dissertação aqui apresentada descreve um acidente em um rotor de máquina de grande porte (compressor de ar) de uma fábrica de fertilizante cujas conseqüências foram perdas financeiras de alta monta tanto para a empresa quanto para o Estado, pela importância econômica onde a fábrica é situada. O objetivo da Dissertação foi simular matematicamente o acidente ocorrido e esclarecer o mesmo. Para se chegar ao diagnóstico do problema se modelou o rotor e o discretizou pelo Método de Elementos Finitos. As técnicas de investigação do problema e a sua seqüência de investigação podem ser tomadas como base em investigação de eventuais acidentes envolvendo rotores futuramente. O capítulo relativo a Análise Modal será extraído como base de apostila para curso envolvendo pessoal da área de Manutenção Mecânica.
A problem related with an air compressor gave birth to the MSc Thesis. Problems related with rotative machines are usual in the industrial field. Difficulties come from the data gathering in order to analyze, and propose a theory of failure in order to explain and avoid the recurrence of such problem. Modelling a rotor with a Timoshenko beam element and the discretization by finite element method permit the dynamical analysis and the modal analysis of the rotor considering its interaction with the radial and thrust bearings (assuming stiffness and rigidity). The work is divided in seven chapters: chapter one introduces the work and gives the overview of it; chapter two describes the industrial problem; chapter three is a brief explanation of bearing types and the fundamental principle of lubrication; chapter four introduces vibration theory and modal analysis; chapter five introduces the finite element method; chapter six is the simulation of the problem, using tailor-made MATLABr programs to reconstruct the problem and to compare the test field results with the here mentioned formulation; chapter seven discusses the results and proposes future works. Appendix shows the kinetic theory and the beam deformation model used in the program and the Laval simple rotor as a limited description of the dynamic of a rotor with distributed mass, rigidity and stiffness. The aim of this work is to help understand and avoid the recurrence of the failure described and to easy the understanding of modal analysis for new engineers and technicians which will deal with rotor dynamics.
APA, Harvard, Vancouver, ISO, and other styles
2

While, David Thomas. "Statistical modelling and analysis of accident data." Thesis, University of Southampton, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315104.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Imprialou, Maria-Ioanna. "Developing accident-speed relationships using a new modelling approach." Thesis, Loughborough University, 2015. https://dspace.lboro.ac.uk/2134/19604.

Full text
Abstract:
Changing speed limit leads to proportional changes in average speeds which may affect the number of traffic accident occurrences. It is however critical and challenging to evaluate the impact of a speed limit alteration on the number and severity of accidents due primarily to the unavailability of adequate data and the inherent limitations of existing approaches. Although speed is regarded as one of the main contributory factors in traffic accident occurrences, research findings are inconsistent. Independent of the robustness of their statistical approaches, accident frequency models typically use accident grouping concepts based on spatial criteria (e.g. accident counts by link termed as a link-based approach). In the link-based approach, the variability of accidents is explained by highly aggregated average measures of explanatory variables that may be inappropriate, especially for time-varying variables such as speed and volume. This thesis re-examines accident-speed relationships by developing a new accident data aggregation method that enables improved representation of the road conditions just before accident occurrences in order to evaluate the impact of a potential speed limit increase on the UK motorways (e.g. from 70 mph to 80 mph). In this work, accidents are aggregated according to the similarity of their pre-accident traffic and geometric conditions, forming an alternative accident count dataset termed as the condition-based approach. Accident-speed relationships are separately developed and compared for both approaches (i.e. link-based and condition-based) by employing the reported annual accidents that occurred on the Strategic Road Network of England in 2012 along with traffic and geometric variables. Accident locations were refined using a fuzzy-logic-based algorithm designed for the study area with 98.9% estimated accuracy. The datasets were modelled by injury severity (i.e. fatal and serious or slight) and by number of vehicles involved (i.e. single-vehicle and multiple-vehicle) using the multivariate Poisson lognormal regression, with spatial effects for the link-based model under a full Bayesian inference method. The results of the condition-based models imply that single-vehicle accidents of all severities and multiple-vehicle accidents with fatal or serious injuries increase at higher speed conditions, particularly when these are combined with lower volumes. Multiple-vehicle slight injury accidents were not found to be related with higher speeds, but instead with congested traffic. The outcomes of the link-based model were almost the opposite; suggesting that the speed-accident relationship is negative. The differences between the results reveal that data aggregation may be crucial, yet so far overlooked in the methodological aspect of accident data analyses. By employing the speed elasticity of motorway accidents that was derived from the calibrated condition-based models it has been found that a 10 mph increase in UK motorway speed limit (i.e. from 70 mph to 80 mph) would result in a 6-12% increase in fatal and serious injury accidents and 1-3% increase in slight injury accidents.
APA, Harvard, Vancouver, ISO, and other styles
4

Chaisan, Kittisak. "Modelling the environmental transfers of radioactivity following the Fukushima accident." Thesis, University of Portsmouth, 2015. https://researchportal.port.ac.uk/portal/en/theses/modelling-the-environmental-transfers-of-radioactivity-following-the-fukushima-accident(60b31ec7-b843-4878-b374-931c5234b90c).html.

Full text
Abstract:
After the massive tsunami on 11 March 2011, the explosions at 4 reactors of the Fukushima Daiichi (I) Nuclear Power Stations (Fukushima I NPSs) in Japan led to a large radioactive cloud being ejected into the atmosphere. Radionuclides released to the atmosphere were washed out in rain causing an area of remarkably high deposition in the area to the northwest of the Fukushima I NPSs. Activity remaining in the atmosphere was dispersed further to other areas of Japan. At various times during the accident, plumes of contamination were transported from Japan to the Pacific Ocean, the North American continent, crossing the Atlantic Ocean to Europe, and eventually to Asia. Due to the lack of measurements in three major ecosystem compartments i.e. air, soil and surface water, information on the highest impact early-phase after fallout and the interpretation of long-term impacts is limited and unclear. The transfer of contaminated radionuclides to soil and air around the Fukushima I NPSs was studied using ratios of various radioisotopes to the long-lived nuclide 137Cs. It was found that ratios of three radionuclides i.e. 134,136Cs and 132Te were consistent with direction and distance in air and soil while the ratio 131I/137Cs was not. It was shown that, deposited 131I/137Cs had an inverse correlation with 137Cs activity in soil. These nuclides were key in forming the high-gamma dose rates in the early phase, particularly the high gamma energy of 132I from the 132Te/132I decay. The derived ratios of these key radionuclides in soil were used together with available measured gamma dose rates in the early phase (< 30 days) to develop a model to reconstruct and predict external gamma dose rate. Model “blind” tests showed that more than 95% of predictions were within a factor of two of measurements from 15 sites to the north, northwest and west of the power station. It is demonstrated that generic isotope ratios provide a sound basis for reconstruction of early-phase external dose rates in these most contaminated areas. For contamination in surface runoff water, lake water and fish, a previous model developed following the Chernobyl accident (AQUASCOPE) was applied to the Fukushima situation. It was shown that by adjusting for the stronger absorption of radiocaesium in soils in Japan (compared with European countries) the model could be used successfully to predict long-term contamination in aquatic systems affected by Fukushima fall out. The results of the model showed good agreement with measured data, in particular in the long-term period (around 0.5-2 years) after the accident.
APA, Harvard, Vancouver, ISO, and other styles
5

Nanopoulos, Dionysios. "Mechanistic modelling of swelling in the accident tolerant fuel candidate U3Si2." Thesis, KTH, Fysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223218.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Krystul, Jaroslav. "Modelling of stochastic hybrid systems with applications to accident risk assessment." Enschede : University of Twente [Host], 2006. http://doc.utwente.nl/57127.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Eyre, Matthew. "The use of laser scanning and 3D modelling in accident investigations." Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/18002.

Full text
Abstract:
In order to prevent accidents we need to understand them, this is achieved through effective accident investigation. Accident investigation is a complex process of gathering and evaluating information to determine factors that may have implications on the final event. One of the fundamental aspects in the investigation process is to capture geospatial data of the incident, to document the scene in its current condition, providing the investigation team with a record for future reference. The production of plans have conventionally remained the same, with a surveyor tasked to illustrate a 3D scene with 2D representations. Recent developments in instrumentation have provided the geospatial industry with the means to capture vast amounts of 3D data directly using laser scanning. In addition, there have been considerable advancements in software applications which can be used to process the surveyed datasets. This research evaluates the use of the latest technology in respect of accident investigation applying the methodology to fire related incidents, industrial accidents and mining incidents. This is achieved by using a number of case studies that have been undertaken throughout the timeline of the project and whilst working with industry professionals in the field.
APA, Harvard, Vancouver, ISO, and other styles
8

Murali, Rajiv. "A rigorous approach to combining use case modelling and accident scenarios." Thesis, Heriot-Watt University, 2016. http://hdl.handle.net/10399/3119.

Full text
Abstract:
Nearly all serious accidents, in the past twenty years, in which software has been involved can be traced to requirements flaws. Accidents related to or involving safety-critical systems often lead to significant damage to life, property, and environment in which the systems operate. This thesis explores an extension to use case modelling that allows safety concerns to be modelled early in the systems development process. This motivation comes from interaction with systems and safety engineers who routinely rely upon use case modelling during the early stages of defining and analysing system behaviour. The approach of embedded formal methods is adopted. That is, we use one discipline of use case modelling to guide the development of a formal model. This enables a greater precision and formal assurance when reasoning about concerns identified by system and safety engineers as well as the subsequent changes made at the level of use case modelling. The chosen formal method is Event-B, which is re nement based and has consequently enabled the approach to exploit a natural abstractions found within use case modelling. This abstraction of the problem found within use cases help introduce their behaviour into the Event-B model via step-wise re nement. The central ideas underlying this thesis are implemented in, UC-B, a tool support for modelling use cases on the Rodin platform (an eclipse-based development environment for Event-B). UC-B allows the specification of the use cases to be detailed with both informal and formal notation, and supports the automatic generation of an Event-B model given a formally specified use case. Several case studies of use cases with accident cases are provided, with their formalisation in Event-B supported by UC-B tool. An examination of the translation from use cases to Event-B model is discussed, along with the subsequent verification provided by Event-B to the use case model.
APA, Harvard, Vancouver, ISO, and other styles
9

Ham, Marnie Elizabeth Jean. "Dispersion modelling of radioactive aerosols released during a severe nuclear reactor accident." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq20646.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Tunaru, Radu. "Statistical modelling of road accident data via graphical models and hierarchical Bayesian models." Thesis, Middlesex University, 1999. http://eprints.mdx.ac.uk/8030/.

Full text
Abstract:
The objective of this thesis is to develop statistical models for multivariate road accident data. Two directions of research are followed: graphical modelling for contingency tables cross-classified by accident characteristics, and hierarchical Bayesian models for multiple accident frequencies of different types modelled jointly. Multi-dimensional tables are analysed and it is shown how to use collapsibility to reduce the dimensionality of the analysis without the problems of Simpson's paradox. It is revealed that accident severity and the number of casualties are associated, and that these variables are mainly influenced by the number of vehicles and speed limit. Graphical chain models allow causal hypotheses to be formulated and it is shown how they are valuable tools for empirical research about road accident characteristics. The hierarchical Bayesian models developed combine generalized linear models with random effects. The novelty of these models consists in the joint modelling of multiple response variables. The models account for overdispersion and they are used for accident prediction and for ranking hazardous sites. All models are fully Bayesian and are fitted using Markov Chain Monte Carlo methods. It is shown that multiple response variables models are superior to separate univariate response models. Some theoretical problems are examined regarding the maximum likelihood estimation process for the two parameters negative binomial distribution. A condition is given that is equivalent with unique maximum likelihood estimators. The two directions of research are connected by using graphs to describe the models. In addition, a new Bayesian model selection procedure for contingency tables is proposed. This is based on Gibbs sampling and avoids problems associated with asymptotic tests. The conclusions revealed here can help practitioners to design better safety policies and to spend money more wisely on sites that really are dangerous.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Accident modelling"

1

1950-, Morgenstern W., ed. Mathematical modelling with Chernobyl registry data: Registry and concepts. Berlin: Springer, 1995.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

(Firm), Price Waterhouse. Modelling the impact of rurality on the provision of accident & emergency services in Northern Ireland: Final report [to the DHSS]. Belfast: Department of Health and Social Services, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Klukas, M. H. Aquatic dispersion modelling of a tritium plume in Lake Ontario. Chalk River, Ont. :Environmental Research Branch, chalk River Laboratories: 1996., 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Klukas, M. H. Aquatic dispersion modelling of a tritium plume in Lake Ontario. Chalk River, Ont: Environmental Research Branch, Chalk River Laboratories, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

FRAM, the frequency resonance analysis method: Modelling complex socio-technical systems. Farnham, Surrey, UK England: Ashgate, 2012.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Underwood, B. Y. The modelling of gravitational setting in the assessment of the consequences of accidental releases of radioactivity. Luxembourg: Commission of the European Communities, 1985.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Accident Sequence Modelling. Elsevier Applied Science, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Myasnikov, V. P., V. G. Danilov, and V. P. Maslov. Mathematical Modelling of the Chernobyl Reactor Accident. Springer-Verlag, 1992.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

D, Butland A. T., ed. Progress with modelling the fast reactor subassembly accident. [Winfrith, Dorchester, Dorset, England]: Fast Reator Safety Studies Group, Safety and Engineering Science Division, AEE Winfrith, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

executive, Health and safety. The Derivation and Use of Population Data for Major Hazard Accident Modelling. Health and Safety Executive (HSE), 2002.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Accident modelling"

1

Li, Rita Yi Man. "Modelling Construction Accident Tort Cases." In Construction Safety Informatics, 13–25. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-5761-9_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Granovsky, E. A., V. A. Lyfar, and E. V. Vasilyuk. "Industrial Accident Modelling: Consequences and Risk." In Prevention of Hazardous Fires and Explosions, 183–97. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4712-5_14.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Li, Rita Yi Man. "Modelling the Construction Accident Cases via Structural Equation Modelling." In Construction Safety Informatics, 77–90. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-5761-9_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Micciolo, Rocco. "Regression Models for Repeated Event Data: An Application to Accident Frequencies of Railway Workers." In Statistical Modelling, 214–21. New York, NY: Springer New York, 1989. http://dx.doi.org/10.1007/978-1-4612-3680-1_25.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Sumayya Naznin, P. H., Leena Samuel Panackel, Sowmya Zaviar, and Shiya Babu. "Accident Prediction Modelling and Crash Scene Investigation." In Lecture Notes in Civil Engineering, 1121–38. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-12011-4_94.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Hirose, Katsumi. "Environmental Effects of the Fukushima Daiichi Nuclear Power Plant Accident." In Recent Trends in Modelling of Environmental Contaminants, 167–95. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-1783-1_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Santhosh, Ancy, Ebin Sam, and B. K. Bindhu. "Pedestrian Accident Prediction Modelling—A Case Study in Thiruvananthapuram City." In Transportation Research, 637–45. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9042-6_50.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Chandrasekaran, Srinivasan, and A. Kiran. "Accident Modelling and Risk Assessment of Oil and Gas Industries." In Advances in Structural Engineering, 2533–43. New Delhi: Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2187-6_195.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Murali, Rajiv, Andrew Ireland, and Gudmund Grov. "A Rigorous Approach to Combining Use Case Modelling and Accident Scenarios." In Lecture Notes in Computer Science, 263–78. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17524-9_19.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Téchy, Zsolt, and Gabor Lajtha. "Modelling of Severe Accident Phenomena in Level 2 PSA for Paks NPP." In Probabilistic Safety Assessment and Management, 290–95. London: Springer London, 2004. http://dx.doi.org/10.1007/978-0-85729-410-4_47.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Accident modelling"

1

Ifthikar, Arshardh, and Saman Hettiarachchi. "Analysis of Historical Accident Data to Determine Accident Prone Locations and Cause of Accidents." In 2018 8th International Conference on Intelligent Systems, Modelling and Simulation (ISMS). IEEE, 2018. http://dx.doi.org/10.1109/isms.2018.00012.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Smith, Doug, Brian Veitch, Faisal Khan, and Rocky Taylor. "An Accident Model for Arctic Shipping." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-41415.

Full text
Abstract:
This paper examines historical Arctic marine accidents from 1995–2004. It was seen during this time period that sinking and grounding of (fishing) vessels was the most common type of Arctic marine accident. A comprehensive accident model is presented to describe Arctic shipping accidents and their causation factors. The accident model is based on epidemiological concepts which explain how non-sequential factors result in an unwanted outcome, analogous to disease spreading through a human body. The causation factors are non-sequential and non-linearly dependent. The applicability of the model is demonstrated through examination of two past accidents: the Kolskaya and the Kulluk. Detailed description of how the accident model could be used for predictive accident modelling and risk analysis of Arctic shipping scenarios is also presented.
APA, Harvard, Vancouver, ISO, and other styles
3

Lu, Yu, Zhaoguang Peng, Alice Miller, Tingdi Zhao, and Chris Johnson. "Timed Fault Tree Models of the China Yongwen Railway Accident." In 2014 8th Asia Modelling Symposium (AMS). IEEE, 2014. http://dx.doi.org/10.1109/ams.2014.34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Backfrieder, Christian, and Gerald Ostermayer. "Modeling a Continuous and Accident-Free Intersection Control for Vehicular Traffic in TraffSim." In 2014 European Modelling Symposium (EMS). IEEE, 2014. http://dx.doi.org/10.1109/ems.2014.29.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Pometko, S., and J. P. Van Dorsselaere. "MOLTEN POOL MODELLING IN PWR SEVERE ACCIDENT SCENARIO CODES." In Heat and Mass Transfer in Severe Nuclear Reactor Accidents. Proceedings of the International Symposium. Connecticut: Begellhouse, 1995. http://dx.doi.org/10.1615/ichmt.1995.radtransfprocheatmasstransfsevnuclreactacc.190.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Jurenoks, V., V. Jansons, and K. Didenko. "Investigation Of Accident Black Spots On Latvian Roads Using Scan Statistics Method." In 22nd Conference on Modelling and Simulation. ECMS, 2008. http://dx.doi.org/10.7148/2008-0393.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Xu, Youyou, Songlin Liu, Xiaoman Cheng, and Xuebin Ma. "CFD Modelling of Loss of Vacuum Accident (LOVA) for CFETR." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81970.

Full text
Abstract:
Chinese Fusion Engineering Testing Reactor (CFETR) is a tokamak-type machine and next device in the roadmap for the realization of fusion energy in China, which aims to bridge the gaps between the International Thermonuclear Experimental Reactor (ITER) and the demonstration reactor (DEMO) [1]. The accident sequence starting from loss of vacuum accident (LOVA) is an important issue concerning the performance of CFETR. During LOVA, air will leak into the vacuum vessel (VV) causing fast pressurization of VV. At the same time, the high speed airflow jet will result in migration and re-suspension of the large quantity of tungsten dust produced and deposited in the lower part of plasma chamber, causing possibilities of radioactive dust leakage into the workshop and environment. In order to conduct a comprehensive analysis of the accident sequence, firstly, the airflow characteristics of LOVA should be studied. In this article, a postulated rupture of different section area is assumed due to a failed component at the equatorial port level. The computational fluid dynamic (CFD) modelling of LOVA was conducted by ANSYS CFX. The results show that the break area has significant influences on the characteristics of the airflow. Two swirling airflows are formed in the upper and lower part of the torus. The airflow characteristics are quite different when the LOVA happens during maintenance or during normal operation. A reverse flow occurs when the LOVA happens during normal operation. Yet can not be observed when LOVA occurs during maintenance. The results are the basis to the further safety study of CFETR such as the re-suspension, migration and explosion of dust.
APA, Harvard, Vancouver, ISO, and other styles
8

Le Yin Meng and Trevor Spedding. "Modelling patient arrivals when simulating an Accident and Emergency Unit." In 2008 Winter Simulation Conference (WSC). IEEE, 2008. http://dx.doi.org/10.1109/wsc.2008.4736231.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Kriswardhana, Willy, Akhmad Hasanuddin, and Ibram Maulana Palestine. "Modelling road traffic accident rate and road geometric parameters relationship." In HIGH-ENERGY PROCESSES IN CONDENSED MATTER (HEPCM 2020): Proceedings of the XXVII Conference on High-Energy Processes in Condensed Matter, dedicated to the 90th anniversary of the birth of RI Soloukhin. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0014530.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Meganfi, Anisya, Nur Chamidah, Sediono, and Elly Anna. "Modelling the number of traffic accident using negative binomial regression spline." In THE 8TH INTERNATIONAL CONFERENCE AND WORKSHOP ON BASIC AND APPLIED SCIENCE (ICOWOBAS) 2021. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0104855.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Accident modelling"

1

Gurieiev, Viktor, Yulii Kutsan, Anna Iatsyshyn, Andrii Iatsyshyn, Valeriia Kovach, Evgen Lysenko, Volodymyr Artemchuk, and Oleksandr Popov. Simulating Systems for Advanced Training and Professional Development of Energy Specialists in Power Sector. [б. в.], November 2020. http://dx.doi.org/10.31812/123456789/4456.

Full text
Abstract:
The crisis of the system of professional development and personnel training in the energy sector exists not only in Ukraine but also all over the world. The article describes the concept of development and functioning of the industry system of personnel training in the energy sector of Ukraine. The importance of using modern web-oriented technologies to improve the skills of operational and dispatching personnel in the energy sector of Ukraine is substantiated. The meth- ods of distributed power system operating modes modelling are presented. De- velopment and software tools for the construction of distributed simulating sys- tems and particular features of cloud technologies application for the creation of a virtual training centers network in the energy sector, as well as the ways to automate the process of simulating scenarios development are described. The ex- perience of introducing remote training courses for energy specialists and remote web-based training simulators based on a comprehensive model of the energy system of Ukraine is presented. An important practical aspect of the research is the application of software and data support for the development of personnel key competencies in the energy sector for rapid recognition of accidents and, if necessary, accident management. This will allow them to acquire knowledge and practical skills to solve the problems of analysis, modelling, forecasting, and monitoring data visualization of large power systems operating modes.
APA, Harvard, Vancouver, ISO, and other styles
2

Rumynin, V. G., V. A. Mironenko, P. K. Konosavsky, and S. A. Pereverzeva. Development of hydrogeological modelling approaches for assessment of consequences of hazardous accidents at nuclear power plants. Office of Scientific and Technical Information (OSTI), July 1994. http://dx.doi.org/10.2172/10114729.

Full text
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography