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Budgetary and Redundancy Optimisation of Homogeneous Series-Parallel systems Subject to Availability Constraints Using Matlab Implemented Genetic Computing

Budgetary and Redundancy Optimisation of Homogeneous Series-...

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IET Irish Signals and systems Conference

作者： Walid Chaaban Michael Schwarz Josef Boercsoeck Department of Computer Architecture and System Programming University of Kassel

ISBN: (纸本)9781629935881

This paper deals with finding optimal structures and redundant safety designs with minimal costs for series-Parallel multi state system (MSS) configurations subject to availability constraints using genetic algorithms as optimisation mean, since these biologically inspired evolution concepts showed stability, powerfulness, and effectiveness in solving such complex combinatorial optimisation tasks. The routine has been written in Matlab and the tests have been performed using some test data belonging to already existing models (Levitin, Lisnianski, and Ouzineb).

关键词： Genetic Algorithms Series-Parallel systems Optimisation Redundancy Allocation Problem (RAP) Multi State system (MSS) Universal Moment Generating Function (UMGF)

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Monitoring system for Prediction and Detection of Epilepsy Seizure

Monitoring System for Prediction and Detection of Epilepsy S...

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International Conference on Advances in Computational Tools for Engineering Applications, ACTEA

作者： Nashaat el Halabi Roy Abi Zeid Daou Roger Achkar Ali Hayek Josef Börcsök Department of Computer and Communications Engineering American University of Science and Technology Beirut Lebanon MART Learning Education and Research Center Chananir Lebanon Department of Computer Architecture and System Programming University of Kassel Germany

Epilepsy is a neurological disorder associated with abnormal electrical activity in the brain, which causes seizures. The occurrence of seizure is not predictable; the duration between seizures, as well as the symptoms, varies from patient to another. Since the seizures are not predictable, and most of epileptic patients suffer from physical risky symptoms during the seizure, such patients are not able to perform daily work activities. The objective of this project is to design and implement a monitoring system for epileptic patients; the system should continuously check some vital signs, analyze the measurements, and decide whether the patient is nearly to have a seizure or not. Whenever a seizure is predicted, the system initiates an alarm. In addition, a notification should be sent to the health care responsible, as well as one preferred contact. By implementing the monitoring system, people who suffer from epilepsy will have more chance to work and live a normal life. Thus, this paper presents the concept of the overall system and shows results of the implemented systems: EEG, ECG and Fall Detection system. Results have shown that the fall detection accuracy reached 99.89% whereas the accuracy of the prediction using the ANN was about 97.34%.

关键词： Electroencephalography Epilepsy Feature extraction Tools Monitoring Artificial neural networks Support vector machines

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Designing and validating a cost effective safe network: application to a PACS system

Designing and validating a cost effective safe network: appl...

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International Conference on Advances in Biomedical Engineering (ICABME)

作者： Georges EL HAJAL Roy ABI ZEID DAOU Yves DUCQ Josef Börcsök IMS laboratory Univ. Bordeaux Talence France Faculty of Public Health Lebanese German University Institute for Computer Architecture and System Programming University of Kassel 34121 Kassel Germany

Network security has been a major issue long time ago. Confidentiality, integrity and availability of data are the primary concerns of any network administrator. Recently, several attacks have resulted in huge losses of resources and of data availability. For example, in May 2017, medical entities in the United Kingdom have been paralyzed due to WannaCry ransomware world-wide cyber-attack. Thus, the main objective of this paper is to propose a more secured network architecture that will be designed for the case of the PACS - Picture Archiving and Communication system - that is used for storing and transmitting radiography images and reports through the hospital internal network. This paper presents an off-the-shelf solution based on the concept of one-way link data diode and open source softwares to assure safety and security in a cost effective manner. The novelty of this approach is in the design of a data diode that limits the physical connection to two network interfaces, and eliminates the need for a third network connection needed to provide a carrier signal for the transmitter. This system has shown some latency in data transfer but has increased the safety and the security of files transferred between the PACS network and the external network.

关键词： Picture archiving and communication systems Security Biomedical imaging Hospitals Malware computer architecture

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Tool to Derive and Calculate Safety Parameter

Tool to Derive and Calculate Safety Parameter

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International Conference on Information, Communication and Automation Technologies

作者： O. Krini J. Borcsok Computer Architecture and System Programming University of Kassel

ISBN: (纸本)9781479904297

The objective is the new development of a Software-Tool, known as FRCas, to calculate the failure rates from various components. This Software-Tool should offer the User the opportunity to determine the failure rate for various components on the basis of various Standards of Siemens SN 29500, Military Handbok MIL-HNDB, SINTEF, and CENELEC. The user should be able to obtain results with this Tool without previous knowledge of the details of standard. A further objective is the integration of Program Package "OrCAD" into the developed Software-Tool, therefore to determine the failure rates of individual components that are in the OrCAD developed electronic circuits.

关键词： Safety Reliability Probability Failure rate Standard

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Optimization of Diagnostics with Respect to the Diagnostic Coverage and the Cost Function

Optimization of Diagnostics with Respect to the Diagnostic C...

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International Conference on Information, Communication and Automation Technologies

作者： H. D. Wacker P. Holub J. Borcsok Computer Architecture and System Programming University of Kassel

ISBN: (纸本)9781479904297

In this paper the authors study a Safety Instrumented system (SIS) subjected to periodically performed diagnostic measures or tests. They focus their interest onto partial tests similar to partial stroke tests, which are well known from testing valves. They then introduce diagnostic parameters in order to quantify manual, automatic and semi-automatic testing mathematically, and they distinguish between two different diagnostic modes: The semi-automatic component-based mode and the semi-automatic-time-based mode. In Chapter V, they investigate the semi-automatic mode by means of two functions depending on their diagnostic parameters: The diagnostic coverage factor and the cost function. They then pose two optimization problems in form of two linear programs. The first one minimizes the cost function under constraints on the diagnostic coverage, and the second one maximizes the diagnostic coverage under constraints on the cost function. The paper closes with the examples of a 1oo1-system and a 2oo2-system.

关键词： Diagnostics Proof test Partial stroke test Failure rate Diagnostic coverage factor Mean time to failure Probability of failure on demand Automatic diagnostics Manual diagnostics Semi automatic diagnostic Linear programming Optimization under constraints Cost function Cost factor 1oo1-system

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Reliable system Design with a High Degree of Diagnostic Procedures for Embedded systems

Reliable System Design with a High Degree of Diagnostic Proc...

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IET Irish Signals and systems Conference

作者： Michael H. Schwarz Josef Boercsoek Department of Safety Computer Technology University of Kassel Department of Computer Architecture and System Programming University of Kassel

ISBN: (纸本)9781629935881

Maintenance starts with reliable diagnostics. programming Logic Controllers (PLCs) are often equipped with a high degree of diagnostic procedures in order to ensure that the processing unit is functioning correctly. It is vital to verify that the system with its programme is still within a 'healthy' state, otherwise a safety function is called and the system is brought into a safe state, or if possible, defect and malfunctioning components are exchanged during operation and the process can continue without shutting down the system. However, when it comes to smaller devices such as intelligent sensors, embedded controller devices with the functionality of an e.g. PID (Proportional-Integral-Derivative), predictive controller, filter or analytical algorithm, which is embedded into a FPGA or micro-controller then diagnostics and verification methods are often not considered in the way they should be. For example, if an intelligent sensor system is not able to diagnose that the sensor-head is malfunctioning, but the sensor-head still provides some data, then the smart algorithm bases its calculation on wrong data, which can cause a dangerous situation. This paper investigates and shows recent results to combine diagnostic methods for small scale devices. Several safety-related structures are considered with a high degree of diagnostic coverage. The paper presents relevant procedures and structures to increase the reliability of small devices without utilising a full scale microcontroller system.

关键词： Reliability Safety structure Maintenance Diagnosis

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Determine MTTF by Monte Carlo simulation for a 2004 safety related system

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WSEAS Transactions on systems 2007年第4期6卷 677-685页

作者： Börcsök, J. Holub, P. Computer Architecture and System Programming University of Kassel Wilhelmshöher Allee 73 34121 Kassel Germany HIMA Paul Hildebrandt GmbH + Co. KG Albert-Bassermann-Str. 28 68782 Brühl Germany

The Monte Carlo Simulation is one mean to calculate safety parameters like MTTF for safety related systems. This procedure helps simulating real failure on demand for safety functions using random numbers. The MTTF-value can be calculated either directly, via Monte Carlo Simulation, using χ2 - or Student-distributions. Relevant is the fact, that a high number of simulation cycles and/or a large simulation time can be used.

关键词： Security systems

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Design and Implementation of a QoL Improvement system for Visually Impaired Patients 5

Design and Implementation of a QoL Improvement System for Vi...

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5th International Conference on Advances in Computational Tools for Engineering Applications, ACTEA 2023

作者： Abi Zeid Daou, Roy Beaino, Jad Hawat, Johnny Ibrahim, Ramy Hayek, Ali Boercsoek, Josef Olmedo, Jose Javier Serrano Université la Sagesse Faculty of Engineering Mechatronics Department Beirut Lebanon MART Learning Education and Research Center Chananir Lebanon University of Applied Science Hamm-Lippstadt Department Lippstadt 2 Hardware Engineering Hamm59063 Germany University of Kassel Faculty of Electrical Engineering/Computer Science Department of Computer Architecture and System Programming Germany Centro de Tecnología Biomédica Universidad Politécnica de Madrid Lab of Bioinstrumentation and Nanomedicine Spain

ISBN: (纸本)9798350309959

Visually impaired people encounter several challenges in their mobility and navigation. Their daily activities are obstructed due to their inability to adapt or recognize accurately their surroundings, especially outside their house which they are more familiar with. Thus, it becomes the main reason of accidents, falling off, getting lost in unknown areas, etc. Furthermore, one of the sensory systems that helps the body to process data about the external environment is the visual system. Blind people also lose touch with the outside world, develops poor motor habits, which results in postural problems as a result. This project will assist visually impaired people in their daily life and simplify normal tasks through a system combining two previously designed projects, 'Smart Shoes for Blind and Visually Impaired People', and 'Human posture monitoring device'. The multifunctional system is developed with the goal of securing safe movements for visually impaired people as well as maintaining a good back posture by detecting leaning postures (LP). The purpose of the smart shoe is to identify obstacles and protect the user from unintended accidents. A compatible Android application has been developed to alert the user when there is an obstruction or when he is walking on a wet surface. Voice alarms will be used to acoustically alert the user. If the user collapses, a message with their position will be sent right away to a relative. On the other hand, the smart vest will identify the position of the user's back and alert him to maintain a straight posture through the same application as well. As the system is dealing with human health, some safety measurements would be taken into consideration to implement a safe electrical system in order to reduce error and to increase accuracy. © 2023 IEEE.

关键词： Accidents

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Design and testing tool for a safe monitoring system for neurodegenerative disorder patients

Design and testing tool for a safe monitoring system for neu...

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International Conference on Advances in Computational Tools for Engineering Applications, ACTEA

作者： Nashaat El Halabi Roger Achkar Roy Abi Zeid Daou Ali Hayek Josef Börcsök Department of Computer and Communications Engineering American University of Science and Technology Beirut Lebanon Department of Biomedical Technologies Faculty of Public Health Lebanese German University Sahel Alma Lebanon Department of Computer Architecture and System Programming University of Kassel Germany

This paper aims to develop a sensor based monitoring and analyzing system for Neuro-Degenerative Disorder patients (NDD); this may consist on SpO2 sensor, Electrophysiological sensors, NIBP, Motion Capture sensors and Eye Monitoring sensor, taking into consideration an acceptable cost for the whole system. Recorded data will be sent to an embedded decision making unit where detection, analysis, classification, prediction and action control will occur. The sensors and the decision making unit will be implemented in a comfortable jacket that doesn't affect the patients' movements and that can be used by several patients with reduced sensor placement alterations. The decision that can be made is creating a stimulus to avoid falling in case of sudden stop while moving, initiating an alarm, sending a notification to a mobile phone application, and/or telemedicine monitoring features. Artificial Neural Networks will be used to classify and predict the abnormal cases where action should be taken, and since the sensors will be continuously recording, it is possible to achieve continuous learning for the ANN as a first phase. Initial models will be defined by testing normal behaviors and some known abnormal behaviors or symptoms related to the electrical activity and other characteristics of the heart, oxygen saturation level, eye activity and body motion.

关键词： Alzheimer's disease Parkinson's disease Monitoring Artificial neural networks Decision making Biomedical monitoring

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Redundant optical data transmission using semiconductor lasers

Redundant optical data transmission using semiconductor lase...

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ACS/IEEE International Conference on computer systems and Applications

作者： H. D. Wacker J. Borcsok H. Hillmer Development HIMA Paul Hildebrandt GmbH + Co KG Bruehl GERMANY Department of Electrical Engineering and Computer Science Chair for Computer Architecture and System Programming Kassel GERMANY University of Kassel Institute of Nanostructure Technologies and Analytics (INA) and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT) Kassel GERMANY

This paper is dealing with redundant optoelectronic data transmission with special respect to laser channels. The concept of the generalized erasure channel (GEC) is used to determine the probability of undetected error for some binary symmetric and non-symmetric channels protected by appropriate codes. In detail, communication via different binary symmetric channels (BSCs), generalized erasure channels and symmetrized binary non symmetric channels (BNSCs) is investigated. Simple upper bounds are given, relating the new formulas to that one of the BSC Finally the results in connection with an inequality for proper codes are applied to multi wavelength optical transmission through channels generated by semiconductor lasers.

关键词： Data communication Semiconductor lasers Error probability Optical transmitters Protection Safety Wavelength division multiplexing Laser theory Upper bound Linear code

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