2,723 research outputs found

    Improved real-time imaging spectrometer

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    An improved AOTF-based imaging spectrometer that offers several advantages over prior art AOTF imaging spectrometers is presented. The ability to electronically set the bandpass wavelength provides observational flexibility. Various improvements in optical architecture provide simplified magnification variability, improved image resolution and light throughput efficiency and reduced sensitivity to ambient light. Two embodiments of the invention are: (1) operation in the visible/near-infrared domain of wavelength range 0.48 to 0.76 microns; and (2) infrared configuration which operates in the wavelength range of 1.2 to 2.5 microns

    MAT: A Multi-strength Adversarial Training Method to Mitigate Adversarial Attacks

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    Some recent works revealed that deep neural networks (DNNs) are vulnerable to so-called adversarial attacks where input examples are intentionally perturbed to fool DNNs. In this work, we revisit the DNN training process that includes adversarial examples into the training dataset so as to improve DNN's resilience to adversarial attacks, namely, adversarial training. Our experiments show that different adversarial strengths, i.e., perturbation levels of adversarial examples, have different working zones to resist the attack. Based on the observation, we propose a multi-strength adversarial training method (MAT) that combines the adversarial training examples with different adversarial strengths to defend adversarial attacks. Two training structures - mixed MAT and parallel MAT - are developed to facilitate the tradeoffs between training time and memory occupation. Our results show that MAT can substantially minimize the accuracy degradation of deep learning systems to adversarial attacks on MNIST, CIFAR-10, CIFAR-100, and SVHN.Comment: 6 pages, 4 figures, 2 table

    Case Study of Altruistic Behavior and Relational Network with Business Value on Local Travel Agency

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    The present study based on a local travel agency in Tainan, investigation how does the altruistic behavior affected the relational network and created the business value. The case company’s CEO had voluntary participated in charity societies more than 20 years. The present study first showed how the case company’s CEO to build an emotional relational network through altruistic behavior. Second, how does the emotional relational network form mixed relational network based on the key features demonstrated by altruistic behavior. Finally, also showed how the mixed relational network is transfer into an instrumental relational network. The results showed that the altruistic behavior can help local travel agency develop and increase their business value via relational network. The key factors to maximize the business value are the professional knowledge and altruistic behavior
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