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1681“…We compared the optical flow signals of a representative dense optical flow technique, the Image Interpolation Algorithm ([Formula: see text]), to the Lucas–Kanade (LK) algorithm in OpenCV and the visible light optical flow results from the PX4Flow in both X and Y displacements. …”
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1682“…Introduction: The Abies forest of the Monarch Butterfly Biosphere Reserve (MBBR) is a key ecosystem for the butterfly Danaus plexippus L. The study of this habitat is essential to understand the global effects of environmental transformation. …”
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1683“…Favoriser le développement des compétences et l'acquisition des connaissances. Établir des canaux de communication. Exprimer des attentes claires. …”
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1684
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1685“…Here, we investigated whether host-plant water limitation influenced oviposition preference in a threatened invertebrate: the monarch butterfly (Danaus plexippus). We found that females deposited more eggs on reduced-water than on well-watered narrowleaf milkweed plants (Asclepias fascicularis), but we could not attribute this change to any specific change in plant chemistry. …”
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1686“…Milkweeds (Asclepias spp.) are currently the focus of restoration programs in the USA aimed at reversing a decline in populations of the milkweed-dependent monarch butterfly (Danaus plexippus); however, little is known of the benefits of these plants to other beneficial insects. …”
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1687“…In this work, the feature points and their optical flows are initially detected by using the Kanade–Lucas–Tomasi (KLT) algorithm. A circle matching is followed to remove the outliers caused by the mismatching of the KLT algorithm. …”
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1688por Thogmartin, Wayne E., Wiederholt, Ruscena, Oberhauser, Karen, Drum, Ryan G., Diffendorfer, Jay E., Altizer, Sonia, Taylor, Orley R., Pleasants, John, Semmens, Darius, Semmens, Brice, Erickson, Richard, Libby, Kaitlin, Lopez-Hoffman, Laura“…The monarch butterfly (Danaus plexippus) population in North America has sharply declined over the last two decades. …”
Publicado 2017
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1689“…In other populations, females differ from males and mimic orange Danaus spp. Using LC-MS/MS, we identified nine ommochrome pigments: six from a population in Chiang Mai, Thailand, and five compounds from a population in Bali, Indonesia. …”
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1690“…Our method was evaluated experimentally using three databases, extended Cohn-Kanade database (CK+), MMI and the Keimyung University Facial Expression of Drivers (KMU-FED) database, and its performance was compared with that of state-of-the-art methods. …”
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1691“…Larvae of the butterflies Danaus chrysippus and Ariadne merione that fed on chemically sterilized or antibiotic-treated host plant leaves had significantly reduced bacterial loads, and their gut bacterial communities were disrupted substantially. …”
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1692“…However, natural resource managers are also concerned about the risk of neonicotinoids to conservation efforts for the monarch butterfly (Danaus plexippus) and need additional data to help estimate risk for wild monarch butterflies exposed to those insecticides. …”
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1693Impact of Different Phytohormones on Morphology, Yield and Cannabinoid Content of Cannabis sativa L.“…NAA application influenced the plant architecture of the tested cv. KANADA beneficially, resulting in a more compact growth habitus, while inflorescence yield (23.51 g plant(−1)) remained similar compared to the control (24.31 g plant(−1)). …”
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1694por Yasmin, Suraiya, Pathan, Refat Khan, Biswas, Munmun, Khandaker, Mayeen Uddin, Faruque, Mohammad Rashed Iqbal“…This study shows that the proposed multi-scale featured local binary pattern (MSFLBP), together with Support Vector Machine (SVM), outperformed the recent LBP-based state-of-the-art approaches resulting in an accuracy of 99.12% for the Extended Cohn–Kanade (CK+) dataset and 89.08% for the Karolinska Directed Emotional Faces (KDEF) dataset.…”
Publicado 2020
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1695“…The proposed method is evaluated on several challenging databases such as Cohn-Kanade database (CK+), Japanese Female Facial Expressions database (JAFFE), and MMI database; experimental results of seven emotion state (neutral, joy, sadness, surprise, anger, fear, and disgust) show that the proposed framework is effective and accurate.…”
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1696por Momeni‐Dehaghi, Iman, Bennett, Joseph R., Mitchell, Greg W., Rytwinski, Trina, Fahrig, Lenore“…For the Monarch butterfly (Danaus plexippus), although its overwintering distribution is well known, the available information on premigration distribution is limited to the studies estimating the natal origins of overwintering Monarchs in Mexico (i.e., postmigration data). …”
Publicado 2021
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1697“…We determined the marker-less barbell auto-tracking accuracy using the Kanade–Lucas–Tomasi (KLT) algorithm in a digital video for two-dimensional analysis (2D-AT). …”
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1698“…The proposed approach comprises two steps: (i) extracting the motion information of targets based on a ground projection method and (ii) matching the tracklets using similarity analysis based on the Dynamic Time Warping (DTW) algorithm. We use a Kanade–Lucas–Tomasi (KLT) algorithm-based frame-skipping method to reduce the computational overhead in object detection and to produce a smooth estimate of the target’s local tracklets. …”
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1699“…In this study, a computer vision-based method was used to evaluate the global vibration comfort of footbridges under human-induced excitation. The improved Lucas–Kanade optical flow method is used for multitarget displacement identification of footbridges. …”
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1700“…This study is inspired by the widely used algorithm for real-time optical flow, the sparse Lucas–Kanade, by applying a feature extractor to decrease the computational requirement of optical flow based neural networks from real-world thermal aerial imagery. …”
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