Discrete chaotic systems based on memristors exhibit excellent dynamical properties and are more straightforward to implement in hardware, making them highly suitable for generating cryptographic keystreams. However, ...
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作者:
Novkovic, BojanUniversity of Zagreb
Faculty of Electrical Engineering and Computing Department of Electronics Microelectronics Computer and Intelligent Systems Zagreb Croatia
Vulnerabilities caused by memory corruption related bugs are a pervasive threat, continually undermining the security of the whole computing environment. The lack of memory safety mechanisms in indispensable systems p...
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LLC topology is proposed for powering low-voltage DC loads from a high-voltage battery. The simulation model of the HV/LV DC-DC converter is obtained in MATLAB/Simulink and parametric analysis of the output voltage du...
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ISBN:
(数字)9798350386394
ISBN:
(纸本)9798350386400
LLC topology is proposed for powering low-voltage DC loads from a high-voltage battery. The simulation model of the HV/LV DC-DC converter is obtained in MATLAB/Simulink and parametric analysis of the output voltage during switch ON/OFF loads were carried out. The importance of connecting a low voltage battery on the load side in terms of drop/jump of the output voltage depending on the switching is observed by comparing the voltage indicator according to the standards for system testing. Different load power steps, power change trend (loading and unloading), as well as charging state of the battery were used as parameters of analysis. The responses of the output voltage in transient state were analyzed in terms of identifying the duration of the transient state as well as the maximum change in the instant values of the output voltage. The importance of the gain factor in the feedback loop of the control circuit at the duration of the transient state is indicated. The measurement of the AC component of the output voltage was carried out on the Infineon EVAL-2ED2101-HB-LLC 200W board in order to evaluate the simulation results.
A supervised feature selection method selects an appropriate but concise set of features to differentiate classes, which is highly expensive for large-scale datasets. Therefore, feature selection should aim at both mi...
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Hand gesture recognition has been playing an important role in robotic applications, which allows robots to communicate with humans in an effective way. However, it typically desires to process high-dimensional data, ...
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ISBN:
(数字)9798350375022
ISBN:
(纸本)9798350375039
Hand gesture recognition has been playing an important role in robotic applications, which allows robots to communicate with humans in an effective way. However, it typically desires to process high-dimensional data, such as images or sensor measurements. To address the computational challenges due to the data growth, it is desirable to select most relevant features during recognition by reducing the redundancy of the data. In this paper, we propose a novel feature selection approach based on the separable nonnegative matrix factorization (NMF) framework for hand gesture recognition. In particular, we adopt a nonconvex regularization term, i.e., the ratio of matrix nuclear norm and Frobenius norm. The proposed method reduces the data dimension by utilizing the data low-rankness in an adaptive way. To address the nonconvexity of the proposed model, we reformulate it by introducing an auxiliary variable and then apply the alternating direction method of multipliers (ADMM). Furthermore, a variety of numerical experiments on binary and grayscale hand gesture images demonstrate the efficiency of the proposed feature selection approach in improving the quality of factorization and its potential impact on robotic applications.
Reliability-Cantered Maintenance (RCM) is a corporate level maintenance strategy that is implemented to optimize the maintenance program of facilities. In this regard, providing the most efficient maintenance policy c...
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The study examines the methods for producing hydrogen using solar energy as a catalyst. The two commonly recognised categories of processes are direct and indirect. Due to the indirect processes low efficiency, excess...
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Pulmonary Illness has become very common due to different emerging viruses, bacteria, pollution, and lifestyle. If these diseases are not diagnosed in a patient, they may have a severe impact and fatal conditions in a...
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Large buildings like museum generally have multiple rooms, necessitating efficient directional information services to ensure visitors receive accurate location details. However, traditional information services often...
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ISBN:
(数字)9798350389654
ISBN:
(纸本)9798350389661
Large buildings like museum generally have multiple rooms, necessitating efficient directional information services to ensure visitors receive accurate location details. However, traditional information services often fail to convey the necessary information effectively. Indoor navigation addresses this issue by providing real-time navigation within rooms or spaces, identifying the position of objects or people. This study aims to enhance indoor navigation by implementing smart technology, enabling users to locate rooms within large buildings quickly. The application developed utilizes Augmented Reality (AR) technology, interfaced with Bluetooth Low Energy (BLE) signals emitted from an ESP32 Microcontroller, serving as location points. The methodology adopted in this study follows the Multimedia Development Life Cycle, encompassing six stages: Concept, Design, Material Collecting, Assembly, Testing, and Distribution. The results demonstrate the successful integration of AR technology in indoor navigation, using microcontrollers as location markers and BLE for seamless communication between the AR interface and microcontroller. This smart technology application significantly improves user experience by providing intuitive and accurate indoor navigation.
This letter considers a fluid antenna system (FAS)- aided secure and covert communication system, where the transmitter adjusts multiple fluid antennas' positions to achieve secure and covert transmission under th...
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