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This paper tackles the problem of testing production systems, i.e. systems that run in industrial environments, and that are distributed over several devices and sensors. Usually, such systems lack of models, or are expressed with models that are not up to date. Without any model, the testing process is often done by hand, and tends to be an heavy and tedious task. This paper contributes to this...
The development of context-aware applications is a difficult and error-prone task. The dynamics of the environmental context combined with the complexity of the applications poses a vast number of possibilities for mistakes during the creation of new applications. Therefore it is important to test applications before they are deployed in a life system. For this reason, this paper proposes a testing...
Automotive companies commonly adopt Hardware-In-the-Loop simulators to develop new control strategies in order to reduce the effort and the cost of the testing phase. The engine management system is an important component of actual road vehicles, it has a vital impact on fuel economy and reduced emissions. Engine developer want to run the ECU while monitoring its internal state through special programs,...
The paper introduces the instant fuel consumption detection system with AT89S8252 microcontroller at the core which detects the instant fuel consumption utilizing the fuel injector pulse width signal and speed transducer signal. Combined with instant fuel consumption and fuel consumption per hundred kilometer display in real time, the detection system features quick response and high precision in...
When dealing with a real time sensor network, building test data with a known ground truth is a tedious and cumbersome task. In order to quickly build test data for such a network, a simulation solution is a viable option. Simulation environments have a close relationship with computer game environments, and therefore there is much to be learned from game engine design. In this paper, we present our...
The performance of military ground vehicle systems quickly degrades due to high operation tempo and extreme environments while performing in-theater service. Current maintenance methods associated with this degradation are not sufficiently optimized for cost and performance. To address this issue, the United States Army is implementing a policy of Condition Based Maintenance (CBM) and being supported...
Soft errors caused by ionizing radiation have emerged as a major concern for current generation of CMOS technologies and the trend is expected to get worse. Soft error rate (SER) measurement, expressed as number of failures encountered per billion hours of device operation, is time consuming and involves significant test cost. The cost stems from having to connect a device-under-test to a tester for...
The 3 most important issues for anomaly detection based intrusion detection systems by using data mining methods are: feature selection, data value normalization, and the choice of data mining algorithms. In this paper, we study primarily the feature selection of network traffic and its impact on the detection rates. We use KDD CUP 1999 dataset as the sample for the study. We group the features of...
The atomic force microscope (AFM) has been widely used as a nano-effector with a function of force sensing to detect interaction forces between an AFM tip and a sample, thereby controlling the process of the nanomanipulation. However, both the extent and accuracy of force application are significantly limited by the nonlinearity of the commonly used optical lever with a nonlinear position-sensitive...
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