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24 articles for “lucas”
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Research ArticleOpen accessIn the author namesExact Classical and Quantum Mechanics of a Generalized Singular Equation of Quadratic Liénard TypeLucas H. Koudahoun, Jean Akande, Damien K.K. Adjaï et al.Authors introduce a generalized singular differential equation of quadratic Liénard type for study of exact classical and quantum mechanical solutions. The equation is shown to exhibit periodic solutions and to include the linear harmonic oscillator equation and the Painlevé-Gambier XVII equation as special cases. It is also shown that the equation may exhibit discrete eigenstates as quantum behavior under Nikiforov-Uvarov … …Journal of Mathematics and Statistics, Vol. 14, Issue 1 · 5 Jul 2018 · 7,609 accessesView PDFCite
Research ArticleOpen accessIn the author namesStatistical Pattern Recognition for Thresholding between Human Skin and Background in Color ImagesRafael Divino Ferreira Feitosa, Vinícius Araújo Santos, Leandro Luís Galdino de Oliveira et al.Many research works based on the tone of human skin have been developed to locate and track the human body for the purpose of recognition in color images. With respect to other techniques, some advantages of face detection based on skin color are the smaller processing time, invariant angles of rotation and the performance in semi-occluded faces. In this study … …Journal of Computer Science, Vol. 13, Issue 2 · 10 Apr 2017 · 7,923 accessesView PDFCite
Research ArticleOpen accessIn the author namesA Fast-and-Fair Collision Resolution Protocol Tailored for Ad Hoc Wireless NetworksMarcos F. Caetano, Lucas M. Guimaraes, Jacir L. BordimWireless technologies have permeated a significant number of devices over the years. On the other hand, Medium Access Control (MAC) protocols strive to deal with an increasing number of contending nodes on crowded frequency bands. This work presents an efficient medium access control resolution protocol. The proposed protocol, termed Collision Resolution Protocol (CRP), uses pulse/tone signaling that works in both … …Journal of Computer Science, Vol. 12, Issue 8 · 1 Nov 2016 · 7,140 accessesView PDFCite
Research ArticleOpen accessIn the author namesImmune Response, Detection of IgE and PGE2 during Vaginal Candidiasis in MiceRosymar Coutinho Lucas, Rafael Taglialegna, Carolina Nunes França et al.Vulvovaginal candidiasis is an opportunistic infection that affects most women in adult life, but the defense mechanism remains to be elucidated. Animals treated with estradiol were inoculated with Candida albicans having high virulence power. The experimental control consisted of animal groups treated with estradiol and animals without treatment that were inoculated with physiologic serum. The vaginal wall was collected, at … …American Journal of Immunology, Vol. 12, Issue 2 · 14 Jul 2016 · 6,976 accessesView PDFCite
Research ArticleOpen accessIn the author namesInvestigating the Role of Fly Ash and Silica Fume in the Cement Hydration ProcessLucas Suarez, Taher M. Abu-Lebdeh, Miguel Picornell, Sameer A. HamoushThis research work investigates the effect of fly ash and silica fume on cement paste hydration. Percentages of each additive were selected to replace the cement by volume to be studied at five different ages using water curing and vacuum curing. These percentages were compared alongside a controlled cement paste without additives. Testing was carried out on 350 samples. Analysis … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 1 · 12 Mar 2016 · 8,640 accessesView PDFCite
Research ArticleOpen accessIn the author namesBone Microarchitecture by Dentistry Digital X-Ray (BµA-DDX) Software: A Pilot Study of the Analysis of Bone Density using Digital Dental X-RaysAdriane Yaeko Togashi, Adair Santa Catarina, Lucas Renato Piana Batistussi, Guilherme CoelhoThe Bone Microarchitecture by Dentistry Digital X-Ray (BµA-DDX) software was designed to determine jaw bone quality using digital dental X-rays. In order to identify patients with a suspicion of low bone density, a system was developed to evaluate bone microarchitecture through the analysis of samples collected in digital panoramic X-rays. The samples were collectedat two sites of the mandible: alveolar … …Current Research in Dentistry, Vol. 6, Issue 2 · 23 Feb 2016 · 7,471 accessesView PDFCite
Review ArticleOpen accessIn the author namesAn Evaluation of Naloxone Use for Opioid Overdoses in West Virginia: A Literature ReviewAnnahita Beheshti, Landyn Lucas, Tanika Dunz et al.Naloxone is a common treatment option for the reversal of an opioid overdose. The law regulating naloxone varies from state to state and therefore so does the drug’s availability. The state of Rhode Island has legalized naloxone for over-the-counter use while a number of states allow prescriptions to opioid abusers and family members. The medical community as a whole appears … …Current Research in Medicine, Vol. 6, Issue 1 · 9 Jul 2015 · 9,043 accessesView PDFCite
Research ArticleOpen accessIn the author namesMotor Imagery and Stroke Neurorehabilitation: An Overview of Basic Concepts and Therapeutic EffectsAmanda Lopes Abbas, Marina Fortuna Lucas, Silmar Teixeira et al.Problem statement: Motor Imagery (MI), which corresponds to an active process during which the representation of a specific action is internally reproduced into working memory without any motor output. It represents the result of conscious access to the content of a movement intention, which is usually performed unconsciously during movement preparation. Approach: This review study aims to provide information on … …Neuroscience International, Vol. 2, Issue 2 · 21 Jan 2012 · 7,587 accessesView PDFCite
Research ArticleOpen accessIn the author namesContribution of Integrated Management Systems to University Management: Case Study of the Federal University of Rio Grande Do NorteLucas A.B.D Oliveira, Natalia V.C.D Vasconcelos, Fernanda C.B.P Queiroz et al.Problem statement: The Higher Education Institutions (IHL) have intensified process of introducing undergraduate and graduate courses to more remote regions, which expanded the scope of what these institutions and allowed the formation of population of these regions. This expansion (whether by on-campus or distance learning) presents new challenges for university management and integration of the players involved in this process. … …Journal of Social Sciences, Vol. 7, Issue 3 · 18 Jul 2011 · 7,792 accessesView PDFCite
Research ArticleOpen accessIn the author namesOperating System Support for Wireless Sensor NetworksAnt A. Fröhlich, Lucas F. WannerIn a wireless sensor network, several sensor nodes obtain local data and communicate among themselves in order to create a global vision of an object of study. The idea of a self-managed network of low-power, autonomous devices, that collects data from an environment and propagates information through a wireless link brought about several new challenges and requirements in application run-time … …Journal of Computer Science, Vol. 4, Issue 4 · 30 Apr 2008 · 7,382 accessesView PDFCite