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1
artículo
Publicado 2014
Enlace
Enlace
Mathematical modeling applied to equipment’s utilized in ore comminution process (crusbing, milling) is so important tool for simulation and optimisation of continuos metallurgical processes (at indudtrial rate), is equivalent, to predict the granulometric yield of a processed ore, by only knowing of feed rate (simulated), obvionsly the model will store intrinsic ly and inherently the plysical properties of ore (hardness, fracture) and equipment operation conditions (CSS opening). The better performance obtained in this manner of the equipment will certaimly contribute for a good consequence in future ore processing worhs.
2
artículo
In this research work, shell deformations generated by surface forces acting on the shell are described and simulated. The Naghdi and Koiter models are used to describe shell deformations. A weak formulation for the model is obtained, and some results on the existence of solutions are presented. The finite element method is then used to obtain the deformations. In addition, simulations of shell deformations are shown for the case of sectional curvature k = 0.
3
tesis de grado
Publicado 2014
Enlace
Enlace
El proyecto de Investigación consiste en realizar una Simulación Hidrológica de la Cuenca del Rio AIJA, ubicada en la Ciudad de Aija, Provincia de Aija, Departamento de Ancash, bajo el uso del Software WatershedModelingSystem. Esta investigación se realizara para demostrar que este Software es de gran importancia para la obtención de datos hidrológicos de las cuencas usados en el campo de la ingeniería. La investigación abarcara desde la demarcación topográfica de la cuenca haciendo uso de las cartas nacionales hasta la obtención del Caudal que fluye en la cuenca.
4
artículo
Publicado 2014
Enlace
Enlace
Mathematical modeling applied to equipment’s utilized in ore comminution process (crusbing, milling) is so important tool for simulation and optimisation of continuos metallurgical processes (at indudtrial rate), is equivalent, to predict the granulometric yield of a processed ore, by only knowing of feed rate (simulated), obvionsly the model will store intrinsic ly and inherently the plysical properties of ore (hardness, fracture) and equipment operation conditions (CSS opening). The better performance obtained in this manner of the equipment will certaimly contribute for a good consequence in future ore processing worhs.
5
tesis de grado
Publicado 2022
Enlace
Enlace
La presente investigación tomo como referencia la empresa de confección denominada Todo Sport, la cual presentó problemas de baja eficiencia en su proceso de confección de polos deportivos por causa principalmente de retrasos en el proceso, una baja productividad de mano de obra, lo ocasionó pedidos no atendidos y por ende perdidas económicas. Se identificó el cuello de botella 11,2 minutos en el área de cosido de piezas mayor al Takt Time. Con ello, se consideró un balance en línea del proceso como mejor propuesta y mediante el software ProModel se obtuvieron resultados positivos como el incremento de la eficiencia en un 43,60% y 28.57% en la productividad de mano de obra, la disminución del tiempo en el sistema a 38.94 minutos y la producción de 142 unidades diarias. Finalmente, se determinó la viabilidad de la propuesta generando ingresos netos mensuales de S/. 18 014.
6
artículo
Publicado 2021
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Enlace
Objective: To improve the understanding of the changes generated by restorative procedures through photoelastic models. Dental reconstruction should be based on principles of occlusion in order not to cause premature contact points during preparation and restoration procedures that can lead to disorders such as occlusal trauma, TMJ dysfunction, or fractures. This paper presents a didactic method to objectively visualize occlusal loads and their distribution. Materials and methods: Photoelastic models of teeth and maxillary segments were made to visualize the effects of dental preparations and restorations, as well as the wear of premature contact points. Results: The direction, intensity and distribution of stresses in the crown and bone support were analyzed by photoelasticity. Conclusions: The technique allows us to visualize how the structures are affected from the cavity preparation,...
7
artículo
Currently there is a wide range of software to simulate robotic cell and interact with a process. This article details the procedure to simulate and program a robotic system of classification of items using the software Cosimir Educational. The project includes a window model, positions and programming. Programming is performed using the language Mitsubishi Robot Language (MRL), which is simple but with enough capacity to perform tasks with the robot. This language has commands for movement control, counters, timers, subroutines, loops and incorporates input and output signals.
8
artículo
Currently there is a wide range of software to simulate robotic cell and interact with a process. This article details the procedure to simulate and program a robotic system of classification of items using the software Cosimir Educational. The project includes a window model, positions and programming. Programming is performed using the language Mitsubishi Robot Language (MRL), which is simple but with enough capacity to perform tasks with the robot. This language has commands for movement control, counters, timers, subroutines, loops and incorporates input and output signals.
9
tesis doctoral
Publicado 2022
Enlace
Enlace
Proteins are versatile biopolymers in living systems that show a great diversity of functions based on the order of their amino acids. Many protein functions, whether mechanical or regulatory, emerge from interactions with other proteins and macromolecules. This dissertation describes the development and adaptation of new computational models to investigate structural and dynamic properties of protein interactions. Two main systems were investigated: the regulation of the actin cytoskeleton and the control of DNA transcription by nuclear factor B (NF-kB). During the study of the regulation of the actin cytoskeleton, mechanical and dynamic properties were estimated using polymer theory. A simplified model of actin filament polymerization was developed. Through simulations, it was shown that actin networks containing Arp2/3 undergo abrupt releases of tension. For the study of DNA interacti...
10
artículo
The simulation model is a useful assessment tool to analyze in depth evaluation of investment projects, improving investor decision making. Contributes to investigate new project ideas and help identify investment opportunities aimed at the reformulation of projects, adapting to the attitudes and investor requirements. An alternative choice is the mathematics expectation that is used in the calculation of probabilities that an event occurs. The fact that a good estimate of the elements involved in the calculation of profitability is not conducted, can lead to invalidate the analysis, and therefore, can lead to approve unprofitable projects and vice versa. When is known the probability of an event occurring certain number of years, usually applies a certain percentage during that period. For example, if the probability of an event occurring is 20 years, a rate of 5% per annum will apply.
11
artículo
The simulation model is a useful assessment tool to analyze in depth evaluation of investment projects, improving investor decision making. Contributes to investigate new project ideas and help identify investment opportunities aimed at the reformulation of projects, adapting to the attitudes and investor requirements. An alternative choice is the mathematics expectation that is used in the calculation of probabilities that an event occurs. The fact that a good estimate of the elements involved in the calculation of profitability is not conducted, can lead to invalidate the analysis, and therefore, can lead to approve unprofitable projects and vice versa. When is known the probability of an event occurring certain number of years, usually applies a certain percentage during that period. For example, if the probability of an event occurring is 20 years, a rate of 5% per annum will apply.
12
artículo
Publicado 2006
Enlace
Enlace
It presents the formulation of a one-dimensional numerical model for simulation of flow in rivers and channels. The model is general and flexible; because it permits to simulate a broad range of flow conditions, such as uniform and non-uniform flow, steady and unsteady. The model does not consider problems of filtration, sediment transport, rainfall, evaporation, neither wind. The model is based in the numerical approximation of the governing equations of flow in open channels (Saint Venant’s equations) using the implicit finite difference Preissmann scheme. The computation variables are the discharge (Q) and the water surface level (Z). The algorithms applied in the segments of the reach under study plus the boundary conditions compose one system of lineal equations, which is solved using the Double Sweep method. It presents some schematic tests for a prismatic rectangular channel. Th...
13
artículo
Publicado 2020
Enlace
Enlace
In this work, we analyze the stability of two epidemiological models of obesity. The first model only admits social influence, that is, the environment in which individuals live, the second model adds control to reduce obesity and excess weight. The obesity-free equilibrium point is local and asymptotically stable if R0 < 1 where R0 is a basic replacement rate. For the model with control, its stability is shown and it is appreciated numerically that it accelerates the decrease of obese individuals.
14
artículo
Publicado 2020
Enlace
Enlace
In this work, we analyze the stability of two epidemiological models of obesity. The first model only admits social influence, that is, the environment in which individuals live, the second model adds control to reduce obesity and excess weight. The obesity-free equilibrium point is local and asymptotically stable if R0 < 1 where R0 is a basic replacement rate. For the model with control, its stability is shown and it is appreciated numerically that it accelerates the decrease of obese individuals.
15
artículo
Publicado 2007
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Enlace
La elección óptima de equipo en minería superfi cial es una tarea compleja donde intervienen muchas variables técnicas, geométricas y económicas en un ambiente donde existen muchas marcas, modelos y tamaños que compiten por el usuario. El técnico que efectúa la selección no tiene una herramienta apropiada que le permita evaluarlos y decidir por el mejor. La simulación contribuye a efectuar esta selección. En este estudio se desarrolla los modelos determinístico y probabilístico de simulación aplicados a equipos de minado con datos de dos operaciones superfi ciales. En el caso determinístico se simula la producción proyectada de un año de una cantera y en base a costo unitario mínimo se elige la fl ota de equipos tanto en perforación como en acarreo. En la simulación probabilística se usa el lenguaje GPSS para simular modelos de excavación y acarreo para varias comb...
16
artículo
Las turberas tropicales son humedales en los que el material vegetal se acumula en condiciones de anegamiento y se convierte en una densa capa de suelo orgánico. La alteración de su hidrología autorregulada por factores externos como el drenaje artificial, el cambio de uso del suelo y el cambio climático puede convertir rápidamente estas inmensas reservas de carbono en fuertes fuentes de gases de efecto invernadero. La inclusión de la hidrología de las turberas tropicales en los modelos del sistema Earth global nos permite comprender el impacto de estas perturbaciones externas. Hemos desarrollado los primeros módulos de hidrología para turberas tropicales naturales y drenadas que se incorporan al marco de modelización del Sistema de Observación de la Tierra Goddard de la NASA. Nuestros resultados muestran fuertes diferencias regionales e indican que la precisión de nuestro mo...
17
artículo
Studies of urban transport networks in many cities are not well focused, since they do not include tools for their planning and control, making decisions to solve the multiple problems regarding traffic congestion expensive and not adequate, generating discomfort in the users, and many times it aggravates the problems, since its impact is not evaluated. Currently exist a variety of simulators that are helpful for traffic simulation and online monitoring. An alternative to this are traffic simulators, which currently exist in variety, however, they are not easily accessible, a formal study and a relationship with the research center that provides it is required, their personalized reports are limited and they comply to another reality. In the present work, six frequent cases of urban transport networks in Lima are modeled, simulated and validated: intersection, oval, union, by-pass, clove...
18
artículo
Publicado 2017
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Enlace
Éste articulo parte de la problemática que tienen las organizaciones para enfrentarse a eventos inesperados que nunca experimentaron, y de conocer cuán grave podría ser para la continuidad del negocio. Así mismo busca la relación que existe entre tres conceptos: La Gestión de Crisis, Simulación de vida y la Gestión del Conocimiento. Por tales razones propone el experimento de colocar a un grupo de miembros de cada organización dentro de un escenario que simule a una empresa ficticia afectada por crisis, para luego mostrar aceptación o rechazo de la simulación como herramienta para la Gestión de Crisis, así como herramienta para crear y compartir conocimiento de forma dinámica. Con el fin de apoyar la misión, se presentan algunas teorías y afirmaciones de diferentes autores relacionadas a conceptos tales como las formas de aprendizaje en el ser humano, crisis, gestión de...
19
artículo
Publicado 2025
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Enlace
Un modelo farmacocinético/farmacodinámico (PK/PD) se utiliza para traducir la concentración de un fármaco en un efecto, lo que permite simular las dosis requeridas para que ocurran efectos específicos. Por lo tanto, el objetivo de este estudio fue crear un modelo PK/PD para estimar dosis intramusculares (IM) de tramadol con un potencial efecto analgésico en pez cebra (Danio rerio). El modelo farmacocinético (PK) se construyó a partir de datos obtenidos del estudio farmacocinético de tramadol en pez cebra. El modelo PK/PD para tramadol en humanos se construyó basándose en datos del estudio de farmacocinética y farmacodinámica de tramadol en esta especie. Se administraron dosis de 5, 10, 20, 30, 40 y 50 μg/animal por vía IM, utilizando el modelo PK de tramadol en pez cebra acoplado con el modelo PK/PD de tramadol en humanos, para determinar el tiempo de mantenimiento del efe...
20
artículo
Publicado 2005
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Enlace
Over the last years, using phenomena models in interpreting and designing of software in metallurgical processes has been increasing. In this present research, a series of experimental test with polymetallic minerals is shown, which have been submitted to Flotation, Filtration, Leaching and Sedimentation processes. Mathematic modelling of such processes is shown, as well as the processing and simulation of the experimental data through the respective models. It is intended to contrast them with data from metallurgical plants for their respective validations. All these results will be used for a better planning and control of industrial variables in a concentrating plant.
