205 research outputs found

    Octodrine: New Questions and Challenges in Sport Supplements

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    This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).Background: Octodrine is the trade name for Dimethylhexylamine (DMHA), a central nervous stimulant that increases the uptake of dopamine and noradrenaline. Originally developed as a nasal decongestant in the 1950’s, it has recently been re-introduced on the market as a pre-workout and ‘fat-burner’ product but its use remains unregulated. Our work provides the first observational cross-sectional analytic study on Octodrine as a new drug trend and its associated harms after a gap spanning seven decades. Methods: A comprehensive multilingual assessment of literature, websites, drug fora and other online resources was carried out with no time restriction in English, German, Russian and Arabic. Keywords included Octodrine’s synonyms and chemical isomers. Results: Only five relevant publications emerged from the literature search, with most of the available data on body building websites and fora. Since 2015, Octodrine has been advertised online as “the next big thing” and “the god of stimulants,” with captivating marketing strategies directed at athletes and a wider cohort of users. Reported side-effects include hypertension, dyspnoea and hyperthermia. Conclusions: The uncontrolled use of Octodrine, its physiological and psychoactive effects raise serious health implications with possible impact on athletes and doping practices. This new phenomenon needs to be thoroughly studied and monitored.Peer reviewe

    Millimeter-wave propagation within a computer chip package

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    © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Wireless Network-on-Chip (WNoC) appears as a promising alternative to conventional interconnect fabrics for chip-scale communications. The WNoC paradigm has been extensively analyzed from the physical, network and architecture perspectives assuming mmWave band operation. However, there has not been a comprehensive study at this band for realistic chip packages and, thus, the characteristics of such wireless channel remain not fully understood. This work addresses this issue by accurately modeling a flip-chip package and investigating the wave propagation inside it. Through parametric studies, a locally optimal configuration for 60 GHz WNoC is obtained, showing that chip-wide attenuation below 32.6 dB could be achieved with standard processes. Finally, the applicability of the methodology is discussed for higher bands and other integrated environments such as a Software-Defined Metamaterial (SDM).Peer ReviewedPostprint (author's final draft

    F21RS SGR No. 16 (Ag parking lot)

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    A Resolution To Urge and Request LSU Parking and Transportation Services to rezone the Parker Coliseum Ag Parking Lot from a residential parking lot to Zone X parking lo

    F21RS SGR No. 19 (1st parking violation)

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    A Resolution To Urge and Request LSU Parking and Transportation to adopt the policy that the LSU Community may have their first parking violation voided from record, excluding fines for parking in ADA spaces and other specified violations and making this policy known to the LSU community by including it on the P&T website and Rules and Regulation

    Chaos and convergence of a family generalizing Homeier's method with damping parameters

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    [EN] In this paper, a family of parametric iterative methods for solving nonlinear equations, including Homeier's scheme, is presented. Its local convergence is obtained and the dynamical behavior on quadratic polynomials of the resulting family is studied in order to choose those values of the parameter that ensure stable behavior. To get this aim, the analysis of fixed and critical points and the associated parameter plane show the dynamical richness of the family and allow us to find members of this class with good numerical properties and also other ones with pathological conduct. To check the stable behavior of the good selected ones, the discretized planar 1D-Bratu problem is solved. Some of those chosen members of the family achieve good results when Homeier's scheme fails.This research was supported by Ministerio de Economia y Competitividad MTM2014-52016-C02-2-P.Cordero Barbero, A.; Franques, A.; Torregrosa Sánchez, JR. (2016). Chaos and convergence of a family generalizing Homeier's method with damping parameters. Nonlinear Dynamics. 85(3):1939-1954. https://doi.org/10.1007/s11071-016-2807-0S19391954853Amat, S., Busquier, S., Bermúdez, C., Magreñán, Á.A.: On the election of the damped parameter of a two-step relaxed Newton-type method. Nonlinear Dyn. doi: 10.1007/s11071-015-2179-xAmat, S., Busquier, S., Bermúdez, C., Plaza, S.: On two families of high order Newton type methods. Appl. Math. Lett. 25, 2209–2217 (2012)Amat, S., Busquier, S., Plaza, S.: Review of some iterative root-finding methods from a dynamical point of view. Sci. Ser. A Math. Sci. 10, 3–35 (2004)Babajee, D.K.R., Cordero, A., Torregrosa, J.R.: Study of iterative methods through the Cayley Quadratic Test. J. Comput. Appl. Math. 291, 358–369 (2016)Babajee, D.K.R., Thukral, R.: On a 4-point sixteenth-order king family of iterative methods for solving nonlinear equations. Int. J. Math. Math. Sci. 2012, ID 979245, 13 (2012)Blanchard, P.: Complex analytic dynamics on the Riemann sphere. Bull. AMS 11(1), 85–141 (1984)Blanchard, P.: The dynamics of Newton’s method. Proc. Symp. Appl. Math. 49, 139–154 (1994)Boyd, J.P.: One-point pseudospectral collocation for the one-dimensional Bratu equation. Appl. Math. Comput. 217, 5553–5565 (2011)Bratu, G.: Sur les equation integrals non-lineaires. Bull. Math. Soc. Fr. 42, 113–142 (1914)Chicharro, F., Cordero, A., Torregrosa, J.R.: Drawing dynamical and parameter planes of iterative families and methods. Sci. World J. 2013, Article ID 780153 (2013)Chun, C., Lee, M.Y.: A new optimal eighth-order family of iterative methods for the solution of nonlinear equations. Appl. Math. Comput. 223, 506–519 (2013)Cordero, A., García-Maimó, J., Torregrosa, J.R., Vassileva, M.P., Vindel, P.: Chaos in King’s iterative family. Appl. Math. Lett. 26, 842–848 (2013)Cordero, A., Torregrosa, J.R.: Variants of Newton’s method using fifth-order quadrature formulas. Appl. Math. Comput. 190, 686–698 (2007)Cordero, A., Torregrosa, J.R., Vindel, P.: Dynamics of a family of Chebyshev–Halley type method. Appl. Math. Comput. 219, 8568–8583 (2013)Fatou, P.: Sur les équations fonctionnelles. Bull. Soc. Math. Fr. 47, 161–271 (1919); 48, 33–94; 208–314 (1920)Gelfand, I.M.: Some problems in the theory of quasi-linear equations. Transl. Am. Math. Soc. Ser. 2, 295–381 (1963)Gutiérrez, J.M., Hernández, M.A., Romero, N.: Dynamics of a new family of iterative processes for quadratic polynomials. J. Comput. Appl. Math. 233, 2688–2695 (2010)Homeier, H.H.H.: On Newton-type methods with cubic convergence. J. Comput. Appl. Math. 176, 425–432 (2005)Jacobsen, J., Schmitt, K.: The Liouville–Bratu–Gelfand problem for radial operators. J. Differ. Equ. 184, 283–298 (2002)Jalilian, R.: Non-polynomial spline method for solving Bratu’s problem. Comput. Phys. Commun. 181, 1868–1872 (2010)Julia, G.: Mémoire sur l’iteration des fonctions rationnelles. J. Math. Pure Appl. 8, 47–245 (1918)Magreñán, Á.A.: Different anomalies in a Jarratt family of iterative root-finding methods. Appl. Math. Comput. 233, 29–38 (2014)Mohsen, A.: A simple solution of the Bratu problem. Comput. Math. Appl. 67, 26–33 (2014)Neta, B., Chun, C., Scott, M.: Basins of attraction for optimal eighth order methods to find simple roots of nonlinear equation. Appl. Math. Comput. 227, 567–592 (2014)Ostrowski, A.M.: Solution of Equations and Systems of Equations. Academic Press, New York (1960)Petković, M., Neta, B., Petković, L.D., Džunić, J.: Multipoint Methods for Solving Nonlinear Equations. Academic Press, Amsterdam (2013)Scott, M., Neta, B., Chun, C.: Basin attractors for various methods. Appl. Math. Comput. 218, 2584–2599 (2011)Sharma, J.R.: Improved Chebyshev–Halley method with sixth and eighth order of convergence. Appl. Math. 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    Território e currículo

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    Em exercício transdisciplinar, embasado no pensamento complexo, em busca de uma práxis que possa ser efetiva nas estratégias de gestão, proteção e promoção da educação em territórios indígenas, este estudo propõe relacionar duas ferramentas que vêm sendo utilizadas com algum êxito por esses povos, mas pouco sintonizadas. Os Planos de Gestão Territorial e Ambiental (PGTAs) e os Projetos Políticos Pedagógicos Referenciais para Terras Indígenas (PPPR-TIs) têm perspectivas participativas, colaborativas pela gestão autônoma das comunidades e territórios. Enquanto os PGTAs são elaborados para resolução imediata de conflitos e ameaças, os PPPR-TIs podem incorporar as mesmas questões e temáticas em projetos de mais longo prazo, preparando as novas gerações para representarem os interesses de seus povos com as competências necessárias, sentimento de pertencimento estimulado e identidade cultural fortalecida. Um caminho necessário e bastante promissor nesses tempos de ameaças intensas e complexas que extrapolam as questões locais e se projetam em um mundo em crise. A pesquisa conclui que a sincronicidade entre os PGTAs e PPPR-TIs fortalece os dois projetos e aumenta a possibilidade de atingir aos objetivos das duas metodologias/ferramentas propostas. Do mesmo modo pode corroborar para que as crianças tenham desde cedo uma educação escolar contextualizada e potente na direção da autodeterminação e da sustentabilidade

    Território e currículo: a sincronização do Pgta Yi Esaikap e Pppr-ti das Escolas Sateré-Mawé

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    In a transdisciplinary exercise, based on complex thinking, in search of a praxis that can be effective in strategies for managing, protecting and promoting education in indigenous territories, this study proposes to relate two tools that have been used with some success by these people, but little tuned. The Territorial and Environmental Management Plans (PGTAs) and the Reference Pedagogical Political Projects for Indigenous Lands (PPPR-TIs) have participatory, collaborative perspectives and an effort towards autonomous management of communities and territories. While PGTAs are designed to immediately resolve conflicts and threats, PPPR-TIs can incorporate the same issues and themes into longer-term projects, preparing new generations to represent the interests of their people with the necessary skills and a sense of belonging stimulated and cultural identity strengthened. A necessary and very promising path in these times of intense and complex threats that go beyond local issues and project themselves into a world in crisis. The research concludes that the synchronicity between PGTAs and PPPR-TIs strengthens both projects and increases the possibility of achieving the objectives of the two proposed methodologies/tools. Likewise, it can help children receive a contextualized and powerful school education from an early age towards self-determination and sustainability.En un ejercicio transdisciplinario, basado en un pensamiento complejo, en busca de una praxis que pueda resultar efectiva en estrategias de gestión, protección y promoción de la educación en los territorios indígenas, este estudio propone relacionar dos herramientas que han sido utilizadas con cierto éxito por estos pueblos, pero poco afinado. Los Planes de Gestión Territorial y Ambiental (PGTA) y los Proyectos Políticos Pedagógicos de Referencia para Tierras Indígenas (PPPR-TI) tienen perspectivas participativas, colaborativas y un esfuerzo hacia la gestión autónoma de comunidades y territorios. Si bien los PGTA están diseñados para resolver conflictos y amenazas de inmediato, los PPPR-TI pueden incorporar las mismas cuestiones y temas en proyectos a más largo plazo, preparando a las nuevas generaciones para representar los intereses de su gente con las habilidades necesarias y un sentido de pertenencia estimulado y cultural. identidad fortalecida. Un camino necesario y muy prometedor en estos tiempos de amenazas intensas y complejas que van más allá de las cuestiones locales y se proyectan hacia un mundo en crisis. La investigación concluye que la sincronicidad entre los PGTA y los PPPR-TI fortalece ambos proyectos y aumenta la posibilidad de alcanzar los objetivos de las dos metodologías/herramientas propuestas. Asimismo, puede ayudar a que los niños reciban una educación escolar contextualizada y potente desde edades tempranas hacia la autodeterminación y la sostenibilidad.Em exercício transdisciplinar, embasado no pensamento complexo, em busca de uma práxis que possa ser efetiva nas estratégias de gestão, proteção e promoção da educação em territórios indígenas, este estudo propõe relacionar duas ferramentas que vêm sendo utilizadas com algum êxito por esses povos, mas pouco sintonizadas. Os Planos de Gestão Territorial e Ambiental (PGTAs) e os Projetos Políticos Pedagógicos Referenciais para Terras Indígenas (PPPR-TIs) têm perspectivas participativas, colaborativas pela gestão autônoma das comunidades e territórios. Enquanto os PGTAs são elaborados para resolução imediata de conflitos e ameaças, os PPPR-TIs podem incorporar as mesmas questões e temáticas em projetos de mais longo prazo, preparando as novas gerações para representarem os interesses de seus povos com as competências necessárias, sentimento de pertencimento estimulado e identidade cultural fortalecida. Um caminho necessário e bastante promissor nesses tempos de ameaças intensas e complexas que extrapolam as questões locais e se projetam em um mundo em crise. A pesquisa conclui que a sincronicidade entre os PGTAs e PPPR-TIs fortalece os dois projetos e aumenta a possibilidade de atingir aos objetivos das duas metodologias/ferramentas propostas. Do mesmo modo pode corroborar para que as crianças tenham desde cedo uma educação escolar contextualizada e potente na direção da autodeterminação e da sustentabilidade

    F21RS SGR No. 5 (Memorial Day)

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    A Resolution To Urge and Request LSU Faculty to not hold University classes on Memorial Da
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