1,721,847 research outputs found
Little Earth of United Tribes: Towards Facilitating a Thriving Community
Full text linkProfessional paper for the fulfillment of the Master of Public AffairsAlacron Esteva, Alma Veronica; Kumar, Sanjeev; Kundan, Gina; Venkatasamy, Ramamoorthy Thiruppathi. (2014). Little Earth of United Tribes: Towards Facilitating a Thriving Community. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/165039
Enhancing Gesture Classification Using Active EMG Band and Advanced Feature Extraction Technique
No full textThis study addresses two critical aspects of gesture classification: data acquisition and feature extraction. It introduces an efficient surface electromyogram (sEMG) acquisition band with seven active electrodes and conducts experiments with eight healthy subjects for six gestures. A novel feature extraction method, the Hjorth secant line (HSL), is also introduced. The self-generated dataset (DB1) and two publicly available datasets (DB2 and DB3), containing data from both healthy subjects and amputees, are analyzed to assess the proposed feature set’s performance. The study evaluates the sEMG acquisition system’s effectiveness by measuring the signal-to-noise ratio (SNR), and the performance of the proposed feature set was evaluated in terms of gesture classification accuracy. The feature set’s performance is compared to other existing feature sets in the literature. In addition, a time complexity analysis is performed for the proposed feature set. The SNR for the sEMG acquisition system is 49.36 ± 5.50 dB, demonstrating its efficiency. When using the proposed feature set with a random forest (RF) classifier, the study achieves the classification accuracy of 97.94% ± 0.47%, 98.94% ± 0.46%, and 82.16% ± 2.07% for DB1–DB3, respectively. Paired t -tests indicate that the proposed feature set significantly improves gesture classification accuracy across all three datasets ( p -value < 0.05). The time required to calculate the proposed features was 0.207 ms, which is shorter than the computational time for other feature extraction methods reported in the literature. This study highlights the enhanced SNR from the proposed acquisition system and the feature set’s potential to improve gesture classification. These findings have substantial implications for advancing intelligent prosthetics
Delayed-type hypersensitivity reaction against Nexplanon®
No full textNexplanon® is an etonogestrel implant with a long-acting contraceptive effect. Although several studies underlined its safety profile, its implant can rarely lead to moderate or severe adverse event. Here, we presented a case of delayed-type hypersensitivity reaction against Nexplanon® that resolved after its removal.Nexplanon (R) is an etonogestrel implant with a long-acting contraceptive effect. Although several studies underlined its safety profile, its implant can rarely lead to moderate or severe adverse event. Here, we presented a case of delayed-type hypersensitivity reaction against Nexplanon (R) that resolved after its removal. (C) 2014 Elsevier Inc. All rights reserved
Management of mites with homemade neem fruit aqueous extract in capsicum under protected cultivation
No full textBhullar, Manmeet Brar, Kaur, Paramjit, Kumar, Sanjeev, Sharma, Rakesh Kumar, Kumar, Rajinder, Kumari, Suman, Singh, Vinay, Kaur, Arshdeep, Kaur, Jagdeep, Sharma, Urvi, Kaur, Jasjinder (2021): Management of mites with homemade neem fruit aqueous extract in capsicum under protected cultivation. Persian Journal of Acarology 10 (1): 85-94, DOI: 10.22073/pja.v10i1.61968, URL: https://www.mendeley.com/catalogue/f143dbd7-151b-317f-a54c-e05015597a71
Laser plasma wakefield acceleration gain enhancement by means of accelerating Bessel pulses
No full textIn this paper, we propose an approach to enhance the electron energy gain in standard laser-driven plasma wakefield accelerators, using accelerating Bessel pulses with tunable group velocity so to avoid electron dephasing. We use in the numerical simulations a one-dimensional theoretical model in the linear regime, taking advantage of the âdiffraction-freeâ properties of the localized Bessel beam and thus neglecting transverse effects during the acceleration process. With a multistage tailoring approach, we show a gain enhancement of more than 100 with electron energies that may reach the GeV range over distances shorter than 1Â m
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Stereo Vision in Cooperative Camera Networks
No full textIn this chapter, a smart framework is presented for the object localization on a given ground-plane test map using heterogeneous stereo vision. In particular, the image pairs are captured by using static and Pan Tilt Zoom (PTZ)cameras, which are heterogeneous in terms of imaging parameters thus having different focal lengths, image resolutions, intensities, etc. These two cameras are selected in a co-operative manner from a network of static and PTZ cameras and used as a stereo system to localize an object even in the case when it is partially occluded. The various sequences of images captured by these cameras are made homogeneous based on their focal ratio and then by performing zero padding. The pairs of matching points are obtained using scale invariant features (SIFT) matching from stereo images. The rectification transformations are calculated by solving a constrained nonlinear optimization problem. The 3-D position of the object is estimated based on a modified concept of stereo matching in rectified pairs of images. Localization is made using the 3-D position obtained from stereo. Experiments are performed to evaluate the performance of the proposed framework using real sequences of images. The proposed method is useful in stereoscopic as well as in video surveillance applications
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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