The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The Q1 dummy FE model was used to analyze different restraint paths of a G0+ group of CRS based on UN R129 rear facing sled test method. Four difference seatbelt restraint paths of the rear facing CRS were analyzed and the displacement of the CRS and physical injury parameters of Q1 dummy were compared. The results showed that the head maximum displacement of Q1 dummy was reduced by 35.05 mm and chest...
This paper studies a reliability analysis method for a system which experiences two dependent competing failure processes, including a random degradation process and a random shock process. Whether the soft failure or the hard failure take place, the system will fail. In our model, the arriving shocks can cause damage on degradation process, and the random shock process can be influenced by degradation...
Aiming at the problem of the tank truck steering prone to rollover accidents, through the analysis of the outward shift of the mass center caused by the suspension movement and the liquid sloshing in the tank truck steering condition on the roll effect rules of the tank truck body, based on the lateral load transfer rate, a safety speed calculation model of the tank truck rollover prevention was proposed;...
Face increasing demands, the Moroccan hospitals need currently to understand the complexity of the hospitable system at several levels and one of them is medicine drugs supply chain. The medicine drug is a strategic element in the medical policy. Considering the importance of this product in hospital, we propose decision-making models that allow help pharmaceutical staff and we take as example a hospital...
The Cyber-Physical System has been characterized by deep integration of computing process and physical process, heterogeneous composition, etc. So it is difficult to model Cyber-Physical System and to analyze its properties. An approach to model Cyber-Physical System and to analyze its safety based on multiple modeling languages transformation is put forward. We model the Cyber-Physical System by...
This paper presents an approach for safety assessment in unmanned aerial system (UAS) operations that uses stochastic fast-time simulation and selected published ground impact fatality/casualty models to calculate fatality risk. The application of simulation allows a sensitivity analysis measuring how different aspects and phases of a UAS operation impact the risk calculations for each of the ground...
Effective evaluation of the productivity and safety of manual operations is essential for successful planning of operations as well as for workplace design. However, actions employed by production planners to improve productivity might adversely impact the ergonomic safety of workers. To address this issue, methods and tools are required that enable simultaneous evaluation of the efficiency and safety...
In this paper, the characteristics of the kinetic reliability of space four-links mechanism are analyzed and the relationship between the kinetic accuracy and wear clearances in joints is explored, using Advanced First Order and Second Moment (AFOSM) method and Monte-Carlo Simulation (MCS). The Archard wear model is applied to analyze the increasing wear clearances in joints; and the function between...
Agent-based modelling is becoming widely used for studies in Social Sciences. However, its application faces limitations coming from its bias to software development, which precludes a more active involvement of social researchers. In order to deal with this problem, this work proposes using domain-specific modelling languages based on the socio-psychological Activity Theory. These languages apply...
The train control center is an indispensable component for the safe operation of high speed railways. This paper analyzes the software function and performance for the train control center subsystem in Chinese Train Control System level 3. It focuses on the editing of active balise telegram, based on the theory of timed automata and hierarchical modeling. First, we analysis the process and form a...
Safety is becoming more and more important with the ever increasing level of safety related E/E Systems built into the cars. Increasing functionality of vehicle systems through electrification of power train and autonomous driving leads to complexity in designing system, software and safety architecture. ISO 26262 aims to reduce the complexity and to approve the traceability of the different safety...
The operation system of oil tanker berthing and handling is complicated. Once oil spill accident occurs, consequences are beyond measure. The bosv-tie model is established to have a comprehensive analysis of the causes and consequences of the oil spill during the operation of tanker berthing and handling. The fault tree analysis is applied to analyze the risk factors associated with oil spill, while...
This paper presents an electromagnetic-structural finite element analysis considering the electromagnetic force generated in the GIB(Gas Insulated Bus) by a large current. The GIB is electrical busbar part of a GIS(Gas Insulated Switchgear) installed in power plants and substations. Since the electromagnetic forces generated by currents flowing through inner conductors in the GIB are so large, they...
In the first part of the article is a methodology for implementing a model-driven safety analysis of dynamical technology systems. The safety analysis is performed in the development of control system, mainly aiming at critical processes of system operation. I divided my methodology into five steps. These steps of the methodology was carried out in a hierarchical sequence. The objective of the second...
Evaluating security threat status is very important in network security management and analysis. Aquantitative hierarchical threat evaluation model is developed in this paper to evaluate security threat status of a computer network system and the computational method is developed based on the structure of the network and the importance of services and hosts. The evaluation policy from bottom to top...
In this paper, we propose a new approach for modeling and evaluating reliability of complex public safety network. Based on Bayesian network structure, we develop a general construction methodology for network representation and design. Using probability propagation techniques, the reliability of the system can be obtained in a straightforward manner. To evaluate our model, the proposed method is...
Static analysis tools are widely used in practice to improve the quality and reliability of software through early detection of defects. However, the number of alarms generated is a major concern because of the cost incurred in their manual inspection required to partition them into true errors and false positives. In this paper, we propose a static analysis to identify the causes of alarms generated...
“Fusion for Energy” (F4E) is designing, developing, and implementing the European helium-cooled lead–lithium (HCLL) and helium-cooled pebble-bed test blanket systems (TBSs) for ITER (Nuclear Facility INB-174). Safety demonstration is an essential element for the integration of these TBSs into ITER and accident analysis is one of its critical components. A systematic approach to accident analysis has...
This study introduces the behavior of human driver's delay in model checking to verify the interaction between a driver and an automated driving system (ADS). An ADS interacts with humans, including other drivers and pedestrians to ensure safety on roads. In particular, human drivers and Level 3 ADSs must take control of the vehicle when the safety may be compromised. Since human driver behavior is...
Relying on the skill and experience of the engineer, traditional method of safety analyses is subjective and may not guarantee the integrity, consistency and correctness sometimes. In this paper, we first summarize the deficiencies in the safety analysis based on the development of V mode. Then we put forward a new model-based method called VT-mode development. The mode discusses the safety analysis...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.