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Roos, N. (author)In this paper two kinds of uncertainty, general and specific uncertainty, are distinguished. General uncertainty denotes an uncertainty about which objects of a class belong to a relation. Sentences in which it occurs can be view as describing incomplete knowledge. An example of such a sentence is: "Most humans have brown eyes". Specific...report 1989
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Donker, J.C. (author), Piers, M.A. (author)Under contract with the Netherlands Agency for Aerospace Programs (NIVR), the National Aerospace Laboratory NLR has investigated the feasibility of knowledge-based systems to assists ground crews in corrective maintenance of complex aircraft systems. For this feasibility study, the Fokker airconditioning system was chosen as a representative...report 1992
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Folkerts, H.H. (author), Jorna, P.G.A.M. (author)Two different design-philosophies with respect to the Man-Machine Interface of current auto thrust systems were compared in a flight simulator study. With the so-called moving thrust lever concept, the positions of the thrust levers are servo-controlled by the auto thrust system. Hence, the thrust levers provide the pilot with additional...report 1994
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Bos, J.F.T. (author), Oort, M.J.A. (author)Currently Fokker Space B.V. is developing the European Robotic Arm (ERA) under contract of the European Space Agency (ESA). ERA's main mission is the assembly and servicing of the Russian Segment of the International Space Station Alpha. The purpose of this paper is to describe how the safety requirements, given the specific possibilities and...report 1997
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- Trautwein, A.C. (author), Leenders, B.H.A.L. (author), Wieringa, P.A. (author) conference paper 1999
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Yu, B. (author)Indoor climate installations are widely used in modern office buildings. Statistical data show that the energy consumption in buildings has grown quickly in the past decades. A considerable part is due to inefficient and improper operations of installations. Therefore, Fault Detection and Diagnosis (FDD) for indoor climate installations has...doctoral thesis 2003
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Grimmelius, H.T. (author)Over the last decades the reliability, availability and safety of ships has become increasingly important. The cost and safety risks of ships have increased with the size, and the complexity has led to extensive automation. Many parameters, variables and alarms are available simultaneously for evaluation, but the small crew has many tasks they...doctoral thesis 2005
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Abreu, R. (author), Zoeteweij, P. (author), Van Gemund, A.J.C. (author)Because of constraints imposed by the market, embedded software in consumer electronics is almost inevitably shipped with faults and the goal is just to reduce the inherent unreliability to an acceptable level before a product has to be released. Automatic fault diagnosis is a valuable tool to capture software faults without extra effort spent...report 2006
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Gulski, E. (author), Cichecki, P. (author), Wester, F. (author), Smit, J.J. (author), Bodega, R. (author), Hermans, T.J.W.H. (author), Seitz, P.P. (author), Quak, B. (author), De Vries, F. (author)In addition to after-laying of new-installed high voltage (HV) power cables the use of on-site non-destructive on-site testing and diagnosis of service aged power cables is becoming an important issue to determine the actual condition of the cable systems and to determine the future performances. In this paper based on field experience an...journal article 2008
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De Jong, A.N. (author)Model-based diagnosis is a technique where a model of a system is combined with observations from that system, to generate diagnoses for failures of the system. This thesis looks at how model-based diagnosis can be applied to wireless sensor networks (WSNs). WSNs are ad-hoc wireless networks of small form-factor, embedded nodes with limited...master thesis 2009
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- De Vent, I.A.E. (author), Rots, J.G. (author), Hobbelman, G.J. (author) conference paper 2009
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Van Ravesteijn, V.F. (author), Van Wijk, C. (author), Vos, F.M. (author), Truyen, R. (author), Peters, J.F. (author), Stoker, J. (author), Van Vliet, L.J. (author)We present a computer-aided detection (CAD) system for computed tomography colonography that orders the polyps according to clinical relevance. TheCADsystem consists of two steps: candidate detection and supervised classification. The characteristics of the detection step lead to specific choices for the classification system. The candidates are...journal article 2010
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Wilson, M. (author)Due to the high availability demands placed on modern hardware systems and the high cost associated with downtime, finding and fixing faults in these systems is an important problem. Unfortunately, the complexity of these systems is very large, making this problem very difficult. While recent innovations in the field of model-based diagnosis...master thesis 2010
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Feldman, A.B. (author)Model-based diagnosis is an area of abductive inference that uses a system model, together with observations about system behavior, to isolate sets of faulty components (diagnoses) that explain the observed behavior, according to some minimality criterion. This thesis presents greedy approximation algorithms for three problems closely related to...doctoral thesis 2010
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Tzilis, S. (author)The ever-shrinking technology features have as a direct consequence the increase of defect density in VLSI chips. Going into the nano-scale era, the fabrication procedures cannot keep improving at the pace of the aforementioned shrinking of technology features. Fault Tolerance emerges as a much cheaper solution and it is imperative in the future...master thesis 2010
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Oude Egberink, J. (author)This report presents a reinterpreted Human Machine Interface (HMI)design aimed at the DAVIE diagnostic tool and facilitating an efficient workflow for DAF and Paccar mechanics. It describes the process thereof as part of a graduation project for Master degree in Industrial Design Engineering at the faculty of Industrial Design at the University...master thesis 2010
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Gonzalez-Sanchez, A. (author), Abreu, R. (author), Gross, H. (author), Van Gemund, A. (author)In development processes with high code production rates testing typically triggers fault diagnosis to localize the detected failures. However, current test prioritization algorithms are tuned for failure detection rate rather than diagnostic information. Consequently, unnecessary diagnostic effort might be spent to localize the faults. We...report 2010
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Kirisli, H.A. (author), Gupta, V. (author), Kirschbaum, S. (author), Neefjes, L. (author), Van Geuns, R.J. (author), Mollet, N. (author), Lelieveldt, B.P.F. (author), Reiber, J.H.C. (author), Van Walsum, T. (author), Niessen, W.J. (author)Cardiac magnetic resonance perfusion imaging (CMR) and computed tomography angiography (CTA) are widely used to assess heart disease. CMR is used to measure the global and regional myocardial function and to evaluate the presence of ischemia; CTA is used for diagnosing coronary artery disease, such as coronary stenoses. Nowadays, the hemodynamic...conference paper 2011
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Demi, L. (author), Van Dongen, K.W.A. (author), Verweij, M.D. (author)Experimental data reveals that attenuation is an important phenomenon in medical ultrasound. Attenuation is particularly important for medical applications based on nonlinear acoustics, since higher harmonics experience higher attenuation than the fundamental. Here, a method is presented to accurately solve the wave equation for nonlinear...journal article 2011
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Zhao, L. (author)In this thesis, we present an automatic polyp detection approach that integrates knowledge from flow visualization techniques. Our primary goal was to compute additional characteristic polyp features that improve the CAD performance of existing polyp detection approaches by eliminating found false-positive polyp candidates. We found that surface...doctoral thesis 2011