检索结果-内蒙古大学图书馆

International Conference on system Reliability and Science (ICSRS)

作者： Aymen Ouertani Ossmane Krini Habil. Josef Börcsök Institute of functional safety & cyber security Baden-Wuerttemberg Cooperative State University Lörrach Germany Computer Architecture und System Programming University of Kassel Kassel Germany

This paper introduces a novel and comprehensive approach for estimating the reliability of safety critical software components in autonomous vehicle motion systems. The proposed approach in this paper presents a combination software reliability model (CSRM) that integrates multiple non-homogeneous Poisson process (NHPP) software reliability growth models (SRGMs) to achieve a reasonable compromise between accuracy, the trade-off between the goodness of fit and the simplicity, and stability. By using machine learning techniques, the CSRM effectively combines the strengths of individual SRGMs while mitigating their weaknesses through suitable evaluation and calibration techniques. The developed CSRM has been successfully applied and validated to facilitate a smoother and more efficient evaluation of reliability targets for software components in autonomous robotic wheelchair (ARW). Based on the validation results, the new CSRM has significantly enhanced the efficiency of the process for evaluating whether the defined reliability goals were being achieved. Furthermore, has facilitated a more accurate assessment of the need for further test executions and better planning of the required verification and validation session. This new approach provides valuable insights into the reliability of the developed software, particularly for software developers lacking extensive experience in identifying and applying appropriate SGRM.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Advances of OPC client server architectures for maintenance strategies - A research and development area not only for industries

引用

WSEAS Transactions on systems and Control 2008年第3期3卷 195-207页

作者： Schwarz, M.H. Boercsoek, J. University of Kassel Department of Computer-architecture and System-programming Wilhelmshoeher Allee 34121 Kassel Germany HIMA Paul Hildebrandt GmbH + Co KG Albert-Bassermann-Str. 28 68782 Brühl Germany

OPC is a matured and accepted standard in industries, but hardly used in industrial applications developed at universities, especially in Europe. Publications in this area, either using OPC-communication or developing applications have been hardly increased over the past several years. This paper reports the current state of the standard, but also describes current problems and how they can be managed and overcome. The authors also give an overview of the recently published new standard, which is called: OPC unified approach. After the fundamentals are described in this paper, the authors present their experiences with OPC to combine it with methods and procedures to develop a modern maintenance system. It also reports current developments at the Department of Computer architecture and system programming at the University of Kassel.

关键词： Industrial research

来源：评论

学校读者我要写书评

暂无评论

Approach of safety-related monitoring and analyzing of human motion with limited sources of captured sensory data

Approach of safety-related monitoring and analyzing of human...

引用

International Conference on Technological Advances in Electrical, Electronics and Computer Engineering (TAEECE)

作者： Ali Hayek Samer Telawi Josef Börcsök Roy Abi Zeid Daou Department of Computer Architecture and System Programming University of Kassel Kassel Germalny Universitat Kassel Kassel Hessen DE Department of Biomedical Technologies Lebanese German University Sahel Alma Lebanon

Nowadays, many major efforts and interests are focused on providing better services for some elders and patients who have to live alone, while they are exposed to different dangers during their daily life activities such as falling. The necessity to reduce the negative consequences of falling, whether related to physical or psychological health or to financial encumbrances, by providing an immediate help and a continuous remote monitoring, drives a corresponding meaning to develop a reasonable safety-related monitoring and detecting system of the human motion with respect to the privacy and the simplicity. In this paper, a conceptual prototype of safety-related platform for monitoring human activities by mean of limited number of acceleration and rotation sensors is presented. Additionally, the proposed approach that adopts the artificial neural networks to overcome the challenges emerged by reducing the number of motion sensors and to compensate the missing data is also introduced. Moreover, the required procedures for collecting training and testing data are also summarized in the last section.

关键词： Sensors Neural networks Skeleton Computer architecture Motion segmentation Thigh Monitoring

来源：评论

学校读者我要写书评

暂无评论

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

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

引用

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

来源：评论

学校读者我要写书评

暂无评论

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

引用

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

来源：评论

学校读者我要写书评

暂无评论

Monitoring system for Prediction and Detection of Epilepsy Seizure

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

引用

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

来源：评论

学校读者我要写书评

暂无评论

Optics in Computer architectures: Basis of WDM, Technologies and Potentials

Optics in Computer Architectures: Basis of WDM, Technologies...

引用

ICONS International Conference on systems

作者： Y. Wang T. Kusserrow S. Irmer A. Hasse M. Bartels N. Dharmarasu H. Hillmer J. Borcsok O. Mikami Institute of Nanostructure Technologies and Analytics (INA) University of Kassel Kassel Germany Department of Computer Architecture and System Programming University of Kassel Germany Department of Information Telecommunication and Electronics Tokai University Hiratsuka-shi Japan

We present novel concepts, technologies and potentials of optical data communication, especially for future computer architectures. The WDM (wavelength division multiplexing) and the optical wiring technologies are explained in detail. Experimental results of tunable optical filters, which play a major role in WDM systems, are reported. New concepts for novel optical interconnectors and novel miniaturized lasers for direct generation of green light are proposed as examples for possible next generation components to improve the performance of optical communication based computer architecture.

关键词： Optical computing Computer architecture Wavelength division multiplexing Optical filters Optical interconnections Data communication Wiring Tunable circuits and devices Optical devices Optical fiber communication

来源：评论

学校读者我要写书评

暂无评论

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

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

引用

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

来源：评论

学校读者我要写书评

暂无评论

A New Method to Detect and Correct the Critical Errors and Determine the Software-Reliability in Critical Software-system

引用

Journal of Physics: Conference Series 2012年第1期364卷

作者： Ossmane Krini Josef Börcsök Department of Computer Architecture and System Programming University of Kassel Germany

In order to use electronic systems comprising of software and hardware components in safety related and high safety related applications, it is necessary to meet the Marginal risk numbers required by standards and legislative provisions. Existing processes and mathematical models are used to verify the risk numbers. On the hardware side, various accepted mathematical models, processes, and methods exist to provide the required proof. To this day, however, there are no closed models or mathematical procedures known that allow for a dependable prediction of software reliability. This work presents a method that makes a prognosis on the residual critical error number in software. Conventional models lack this ability and right now, there are no methods that forecast critical errors. The new method will show that an estimate of the residual error number of critical errors in software systems is possible by using a combination of prediction models, a ratio of critical errors, and the total error number. Subsequently, the critical expected value-function at any point in time can be derived from the new solution method, provided the detection rate has been calculated using an appropriate estimation method. Also, the presented method makes it possible to make an estimate on the critical failure rate. The approach is modelled on a real process and therefore describes two essential processes - detection and correction process.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Instruction based Built-in-Testing of Instruction Select Multiplexer in Arithmetic Logic Unit

引用

Journal of Physics: Conference Series 2012年第1期364卷

作者： P Tsoozol J Börcsök M Schwarz Department of Computer Architecture and System Programming University of Kassel Germany

Due to the complexity of microprocessor, an efficient testing is a crucial point and serious challenge in safety systems. A new instruction opcode for ALU based Built-In-Test (BIT) is proposed in this paper. With this novel method stuck-at-fault in Multiplexer (MUX) for Arithmetic Logic Unit (ALU) can be determined. A model that consists of the command and faulty states is developed. According to the designed state model, an algorithm and pseudo program that tests the stuck-at-fault in MUX is implemented and described in this paper.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：