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transmission problem » transmission protocol (Expander búsqueda), translation problems (Expander búsqueda), transmission system (Expander búsqueda)
la transmission » la transmision (Expander búsqueda), a transmission (Expander búsqueda), ray transmission (Expander búsqueda)
transmission problem » transmission protocol (Expander búsqueda), translation problems (Expander búsqueda), transmission system (Expander búsqueda)
la transmission » la transmision (Expander búsqueda), a transmission (Expander búsqueda), ray transmission (Expander búsqueda)
1
artículo
In this paper we consider the nonlinear transmission problem for the wave equation with time dependent coefficients and linear internal damping. We prove global existence and exponential decay of solution. The result is achieved by considering energy like - Lyapunov functionals and suitable unique continuation theorem for the wave equation.
2
artículo
In this paper we consider the nonlinear transmission problem for the wave equation with time dependent coefficients and linear internal damping. We prove global existence and exponential decay of solution. The result is achieved by considering energy like - Lyapunov functionals and suitable unique continuation theorem for the wave equation.
3
artículo
In this article we study the wave propagation over materials consisting of two components: one component is simple elastic while the other has a nonlinear internal dampingwith elastic coefficients dependent on time; both components having source terms. Byusing the potential well method we obtain the global existence, we also show that theenergy of the system decays uniformly to zero,
4
artículo
In this article we study the wave propagation over materials consisting of two components: one component is simple elastic while the other has a nonlinear internal dampingwith elastic coefficients dependent on time; both components having source terms. Byusing the potential well method we obtain the global existence, we also show that theenergy of the system decays uniformly to zero,
5
artículo
Publicado 2008
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En este artículo consideramos el problema no lineal de transmisión para una ecuación de onda con coeficientes dependientes del tiempo y amortiguamiento interno no lineal. Se prueba la existencia global y se estudia propiedades de decaimiento de las soluciones. El resultado se alcanza usando técnicas de multiplicado res y el teorema continuación única conveniente para una ecuación de onda.
6
artículo
Publicado 2008
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En este artículo consideramos el problema no lineal de transmisión para una ecuación de onda con coeficientes dependientes del tiempo y amortiguamiento interno no lineal. Se prueba la existencia global y se estudia propiedades de decaimiento de las soluciones. El resultado se alcanza usando técnicas de multiplicado res y el teorema continuación única conveniente para una ecuación de onda.
7
artículo
Publicado 2021
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Infection by the human immunodeficiency virus (HIV) continues to be a perinatal health problem globally and in our country, due to the increase in contagion in pregnant women who run the risk of vertical transmission of HIV to their baby during the pregnancy, childbirth and breastfeeding. Various publications mention that the prevalence of vertical transmission of HIV varies according to different authors between 3.8% and 17%. In Peru it is reported at 4%. Among the risk factors associated with vertical transmission of HIV, the following are mentioned: absence of antiretroviral therapy during prenatal care with adjusted odds ratio (aOR) ranging from 2.41 to 17.20; absence of a program for the prevention of mother-to-child transmission of HIV with aORa of 4.6 to 40.6; absence of prenatal control ORa 4.6; home delivery with aOR of 3.35 to 8.10; emergency cesarean delivery with OR of 4.32; ...
8
artículo
Publicado 2021
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Infection by the human immunodeficiency virus (HIV) continues to be a perinatal health problem globally and in our country, due to the increase in contagion in pregnant women who run the risk of vertical transmission of HIV to their baby during the pregnancy, childbirth and breastfeeding. Various publications mention that the prevalence of vertical transmission of HIV varies according to different authors between 3.8% and 17%. In Peru it is reported at 4%. Among the risk factors associated with vertical transmission of HIV, the following are mentioned: absence of antiretroviral therapy during prenatal care with adjusted odds ratio (aOR) ranging from 2.41 to 17.20; absence of a program for the prevention of mother-to-child transmission of HIV with aORa of 4.6 to 40.6; absence of prenatal control ORa 4.6; home delivery with aOR of 3.35 to 8.10; emergency cesarean delivery with OR of 4.32; ...
9
artículo
This paper presents an optimal control strategy for the Zika virus disease with sexual transmission. A mathematical model for the transmission of the Zika virus is considered with three preventive measures as control, namely: the prevention of the sexual contagion with the use of condoms and the orientation in the transmission of Zika in the homosexual and heterosexual relations, the campaigns against vectors and the protection of the society regarding the contagion by mosquito bites. We examine the implementation of various combinations of the control strategies in order to determine the most cost-effective one. The necessary conditions for the optimal controls are determined using Pontryaguin’s maximum principle and the optimality problem is solved using Runge-Kutta fourth order scheme. Based on the computational results, we conclude that the most efficient control strategy is when i...
10
artículo
This paper presents an optimal control strategy for the Zika virus disease with sexual transmission. A mathematical model for the transmission of the Zika virus is considered with three preventive measures as control, namely: the prevention of the sexual contagion with the use of condoms and the orientation in the transmission of Zika in the homosexual and heterosexual relations, the campaigns against vectors and the protection of the society regarding the contagion by mosquito bites. We examine the implementation of various combinations of the control strategies in order to determine the most cost-effective one. The necessary conditions for the optimal controls are determined using Pontryaguin’s maximum principle and the optimality problem is solved using Runge-Kutta fourth order scheme. Based on the computational results, we conclude that the most efficient control strategy is when i...
11
tesis doctoral
Publicado 2021
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El objetivo de esta tesis es analizar, desarrollar e implementar esquemas primales y mixtos para ciertos problemas elípticos, basados en la filosofía de los métodos híbridos de alto orden (HHO). Hacemos uso de resultados conocidos, como el Lema de Lax-Milgram, para formulaciones primales, y la teoría de Babuˇska-Brezzi, para esquemas mixtos, con el propósito de establecer existencia y unicidad de problemas lineales y no lineales que surgen en el contexto de problemas físicos, como por ejemplo en la mecánica de fluidos. Establecemos la solubilidad única de los problemas continuo y discreto, con su estimación de error a priori correspondiente, para el problema de Neumann, una cierta clase de problemas elípticos no lineales y para problemas de transmisión interior. En cada uno de los capítulos desarrollados, se incluye varios experimentos numéricos, que ilustran el buen desem...
12
artículo
Publicado 2021
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Pregnancy in a woman living with HIV continues to be an important health problem that involves not only the pregnant woman but also the product of pregnancy due to the high risk of transmitting the virus during pregnancy, the time of delivery and breastfeeding maternal. Despite the years the selected studies continue to report that the reduction of vertical transmission of HIV is achieved with the early diagnosis of the infection in the pregnant woman, reducing the maternal viral load using antiretroviral therapy in pregnancy and in timing of delivery, elective cesarean delivery, discontinuation of breastfeeding, and antiretroviral prophylaxis in the newborn.
13
artículo
Publicado 2021
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Pregnancy in a woman living with HIV continues to be an important health problem that involves not only the pregnant woman but also the product of pregnancy due to the high risk of transmitting the virus during pregnancy, the time of delivery and breastfeeding maternal. Despite the years the selected studies continue to report that the reduction of vertical transmission of HIV is achieved with the early diagnosis of the infection in the pregnant woman, reducing the maternal viral load using antiretroviral therapy in pregnancy and in timing of delivery, elective cesarean delivery, discontinuation of breastfeeding, and antiretroviral prophylaxis in the newborn.
14
artículo
Publicado 2009
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A bibliographic review was done to update and systematize information on Toxocara human infection. Transmission mechanisms, epidemiology, clinical forms, diagnostic methods and treatment are described. Its importance as an infectious cause of blindness in young people that is potentially preventible and curable by early diagnosis is emphasized. Proposal is done to establish epidemiological surveillance, improve current laws to reduce transmission risk to the general population and increase knowledge on this infection in Peru.
15
tesis doctoral
The vehicle routing problem is one of the most studied problems in Operations Re-search. Different variants have been treated in the past 50 years and with technological advances, new challenges appear. In this thesis, we introduce a new variation of the VRP appearing in wireless networks. The new characteristic added to this well-know problem is the possibility of pick-up information via wireless transmissions. In the con-text considered here, a unique base station is connected with the outside and a vehicle is responsible for collecting information via wireless connection to the vehicle when it is located in another sufficiently close station. Simultaneous transmissions are permitted. Time of transmission depends on the distance between stations, the amount of infor-mation transmitted, and other physical factors (e.g obstacles along the way, installed equipment). Information to be sent...
16
artículo
Publicado 2020
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El problema central de reflexión es la discontinuidad de la transmisión del idioma quechua entre dos generaciones (padres/hijos). La pregunta desde la cual se parte es la siguiente: ¿por qué quienes saben quechua no enseñan a sus hijos este idioma? Hay una secuencia lógica del derrotero seguido: referencias históricas y las oportunidades perdidas, datos cuantitativos para ver su evolución, una introspección personal y la elaboración de las conclusiones.
17
artículo
Publicado 2011
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Estudiaremos el Comportamiento asintótico para un problema de transmisión nolineal con amortiguamiento localmente distribuido y con memoria en la frontera dado por el sistema siguiente, ...
18
artículo
Publicado 2011
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We will study the asymptotic Behavior for a problem of transmission nonlinear with damping locally distributed and with memory at the chosen to boundary for the system following,
19
artículo
Publicado 2016
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The present article addresses what skills education should consider as important in order to fulfill adequately its function. Education in the 21st Century should not be aimed at the transmission of knowledge and information but at developing the capacity to produce and use them. Different experts and international bodies reached an agreement and pointed out that critical thinking, creativity, communication and cooperation are the essential skills to be considered in 21st Century education.
20
artículo
Publicado 2016
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The present article addresses what skills education should consider as important in order to fulfill adequately its function. Education in the 21st Century should not be aimed at the transmission of knowledge and information but at developing the capacity to produce and use them. Different experts and international bodies reached an agreement and pointed out that critical thinking, creativity, communication and cooperation are the essential skills to be considered in 21st Century education.
