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https://purl.org/pe-repo/ocde/ford#2.11.04
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https://purl.org/pe-repo/ocde/ford#5.02.04
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https://purl.org/pe-repo/ocde/ford#2.01.00
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https://purl.org/pe-repo/ocde/ford#2.01.01
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https://purl.org/pe-repo/ocde/ford#2.00.00
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Consultores de empresas--Planificación estratégica
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Productividad
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flow problem » flow problems (Expander búsqueda), old problem (Expander búsqueda), law problems (Expander búsqueda)
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1
artículo
Publicado 2002
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Presently work is studied the theorem of the flow maximum-cut minimum (L. Ford and D..Fulkerson) from the practical poin of view, this is its demonstration is based on the test of correctude of the algorithm of labels. The implementation of such an algorithm is also presented.
2
artículo
Publicado 2000
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This article proposes the use of artificial neural networks (ANN) to solve the power flow problem in electrical energy systems. Power flow calculates the steady state of an electrical power system (SEP) and is a fundamental tool for the planning, operation and control of modern SEPs. The mathematical model of the power flow corresponds to a set of nonlinear algebraic equations that can be solved conventionally with the iterative Newton-Raphson (NR) method or with its decoupled versions. Currently, there are various commercial computer programs that use such methods. Among the objectives of the solution of the ANN-based power flow problem proposed here, its potential application stands out to solve problems that require a large computational effort such as online static security analysis and contingency analysis. The proposed methodology was applied to the 6-bar Ward-Hale and 14-bar IEEE ...
3
tesis doctoral
Publicado 2020
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También puede descargar la tesis en el repositorio institucional de la Pontifícia Universidade Católica do Rio de Janeiro: https://doi.org/10.17771/PUCRio.acad.49171
4
artículo
In this work is presented an algorithm that solve a class of integer quadratic program problems. The algorithm solves a secuence of at most problems of minimum cut over a graph with n + 2 vertex where n is the number of variables in the problem.
5
artículo
Publicado 2010
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En este trabajo se presenta un algoritmo para resolver una clase de Problemas de Programación Cuadrática Entera. El algoritmo resuelve una secuenciande a lo más...problemas de corte mínimo sobre un grafo con n + 2 vértices donde n es el número de variables en el problema.
6
artículo
This research was conducted in the Hydrographic Region Titicaca, Peru. The main objective was to develop regional models of average monthly flows and persistence of the main rivers, applied to the problem of estimation of flows in basins without hydrometric registration. The climatic and physiographic characteristics of the basins under study were taken as independent variables and the mean monthly flows and persistence as a dependent variable. The methodology to identify homogeneous hydrological regions was made through the techniques of Ward and L-Moments. The regional equations were determined using potential regression models, the explanatory variables being the basin area and the length of the main river. The Nash-Sutcliffe (NSE) efficiency indicators and the root mean square error (RMSE) were used to assess the statistical significance of the regional models. The proposed regional ...
7
artículo
This research was conducted in the Hydrographic Region Titicaca, Peru. The main objective was to develop regional models of average monthly flows and persistence of the main rivers, applied to the problem of estimation of flows in basins without hydrometric registration. The climatic and physiographic characteristics of the basins under study were taken as independent variables and the mean monthly flows and persistence as a dependent variable. The methodology to identify homogeneous hydrological regions was made through the techniques of Ward and L-Moments. The regional equations were determined using potential regression models, the explanatory variables being the basin area and the length of the main river. The Nash-Sutcliffe (NSE) efficiency indicators and the root mean square error (RMSE) were used to assess the statistical significance of the regional models. The proposed regional ...
8
artículo
This research was conducted in the Hydrographic Region Titicaca, Peru. The main objective was to develop regional models of average monthly flows and persistence of the main rivers, applied to the problem of estimation of flows in basins without hydrometric registration. The climatic and physiographic characteristics of the basins under study were taken as independent variables and the mean monthly flows and persistence as a dependent variable. The methodology to identify homogeneous hydrological regions was made through the techniques of Ward and L-Moments. The regional equations were determined using potential regression models, the explanatory variables being the basin area and the length of the main river. The Nash-Sutcliffe (NSE) efficiency indicators and the root mean square error (RMSE) were used to assess the statistical significance of the regional models. The proposed regional ...
9
artículo
This research was conducted in the Hydrographic Region Titicaca, Peru. The main objective was to develop regional models of average monthly flows and persistence of the main rivers, applied to the problem of estimation of flows in basins without hydrometric registration. The climatic and physiographic characteristics of the basins under study were taken as independent variables and the mean monthly flows and persistence as a dependent variable. The methodology to identify homogeneous hydrological regions was made through the techniques of Ward and L-Moments. The regional equations were determined using potential regression models, the explanatory variables being the basin area and the length of the main river. The Nash-Sutcliffe (NSE) efficiency indicators and the root mean square error (RMSE) were used to assess the statistical significance of the regional models. The proposed regional ...
10
artículo
In food technology, the consistency measurement of many thick or pasty products such as sauces or fruit or vegetable pastes is recorded. The problem in engineering lies in the design and construction of a flow device that allows evaluating the consistency of pasty or thick foods, for which it has actually been reformulated as an empirical flow channel device following the model of the “Bostwick consistometer” through the "Bostwick consistency", which is used by researchers to define technical terms, such as tomato sauce. The objective has been to design and build an instrument, where the thick or pasty food is released into a specially made channel and the distance that the food has slipped after a certain time interval is measured, usually 30 seconds; this gives the thick or pasty food “Bostwick consistency”, for example a tomato puree, B30 (Bostwick 30 seconds) can only be cons...
11
artículo
Publicado 2012
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If we modelling the flux of subterranean waters in an aquiferous, implicitly modelling the flux of mobile polluting agents dissolves, keeping in mind this premise, our analysis of the flux of polluting agents in the aquiferous thing of Ayamonte, will remain represented in the study of the flux of the subterranean waters in a hydrogeological halfback regular guest and it provide with uniforms, agree that detail in the later analysis of this document. However, the treatment, must notice that for polluting in suspension and other type of polluting agents, the treatment it differs of the analysis that here carry out. By means of the application of the finite differences and the language of fortran programming for the solution of the flux and transports of polluting agents in water subterranean this work has developed in cabinet and excel. The method of used solution in the solution of this p...
12
artículo
Publicado 2012
Enlace
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If we modelling the flux of subterranean waters in an aquiferous, implicitly modelling the flux of mobile polluting agents dissolves, keeping in mind this premise, our analysis of the flux of polluting agents in the aquiferous thing of Ayamonte, will remain represented in the study of the flux of the subterranean waters in a hydrogeological halfback regular guest and it provide with uniforms, agree that detail in the later analysis of this document. However, the treatment, must notice that for polluting in suspension and other type of polluting agents, the treatment it differs of the analysis that here carry out. By means of the application of the finite differences and the language of fortran programming for the solution of the flux and transports of polluting agents in water subterranean this work has developed in cabinet and excel. The method of used solution in the solution of this p...
13
artículo
In food technology, the consistency measurement of many thick or pasty products such as sauces or fruit or vegetable pastes is recorded. The problem in engineering lies in the design and construction of a flow device that allows evaluating the consistency of pasty or thick foods, for which it has actually been reformulated as an empirical flow channel device following the model of the “Bostwick consistometer” through the "Bostwick consistency", which is used by researchers to define technical terms, such as tomato sauce. The objective has been to design and build an instrument, where the thick or pasty food is released into a specially made channel and the distance that the food has slipped after a certain time interval is measured, usually 30 seconds; this gives the thick or pasty food “Bostwick consistency”, for example a tomato puree, B30 (Bostwick 30 seconds) can only be cons...
14
artículo
In this work we investigate rotational waves resonantly excited by a submerged obstacle in a sheared shallow water channel with constant vorticity. In the weakly nonlinear, weakly dispersive regime, the problem is formulated in the forced Korteweg-de Vries framework. We compute the solution of the initial value problem for this equation numerically using a Fourier pseudospectral method with integrating factor. The water surface is initially taken at rest, and once the current is turned on, waves are immediately generated in the free surface. We identify the main effects of sheared current in the generated waves such as rotational solitary waves propagating upstream and sharp crested waves being generated.
15
artículo
Publicado 2011
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The globalization of the economy and the internationalization of capital markets today is quite widespread in the world, that is why there is no place for insulation of different markets, including the stock market and in the case of the Peruvian market is no exception to this reality. In this new context exist a phenomenon of acquisition and merger. The importance that they have taken these acquisitions and mergers of companies makes us think of a technique of recovery that makes it possible to calculate the value of the company to be able to perform this operation without problems and at a fair price. Hence, our concern is to raise a simple model to calculate the value of the company based on the "Free Cash Flow".
16
artículo
Publicado 2011
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La globalización de la economía y la internacionalización de los mercados de capitales es hoy en día un fenómeno totalmente generalizado en el mundo, por esta razón no hay lugar para aislamiento de los distintos mercados incluyendo el mercado de valores y en el caso del mercado peruano no se escapa a esta realidad. En este nuevo contexto existe un fenómeno muy presente relacionado a la adquisición y fusión de empresas. La importancia que han tomado estas adquisiciones y fusiones de empresas hace pensar en una técnica de valorización que permita calcular el valor de la empresa para que se pueda realizar esta operación sin problemas y a un precio justo. De allí que nuestra inquietud es plantear un modelo sencillo para calcular el valor de la empresa partiendo del “Flujo de Caja Libre” cuyo nombre en inglés es “Free Cash Flow”.
17
tesis de grado
Publicado 2022
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El problema de programación de tareas en líneas de producción con trabajadores heterogéneos (Het-FSSP del inglés Heterogeneous Flow Shop Scheduling Problem) se compone de dos subproblemas que deben resolverse conjuntamente: la asignación de trabajadores heterogéneos a las máquinas o puestos de trabajo y el problema correspondiente de programación de tareas en esa línea de producción. El presente trabajo propone la integración de las técnicas propuestas para resolver el problema de programación no permutacional de tareas dentro de las técnicas propuestas para resolver el problema de programación de tareas considerando trabajadores heterogéneos. El método resultante es un algoritmo Scatter Search con Iterativo Goloso (SS+IG). Este nuevo método produce mejores resultados que los métodos propuestos en la literatura.
18
artículo
Publicado 2003
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The flow of a laminar fluid that filters through a porous medium is considered. This behavior leads to the formulation of a mathematical model that, through the Baiocchi transformation, allows it to be expressed as a free boundary problem. In this we wish to evaluate the pressure gradient of the fluid in the medium. The present work consists of the following: i) variational formulation of the problem il) study ofthe existence and uniqueness of the solution and iii) numerical resolution of the problem ofgenerated convex minimization. To find the numerical solution of the variational inequality, the Finite Element method and the Uzawa algorithm have been used.In the numerical simulation of the dam problem, the domain has been consideredof computational calculation, a rectangular IR geometry, assuming as known boundaries, the impermeable zone, the one in contact with the air and the one tha...
19
tesis de maestría
Publicado 2025
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En el Perú, la leishmaniasis cutánea (LC) es un problema de salud pública que afecta predominantemente a la población rural socioeconómicamente deprimida.El diagnóstico convencional para esta enfermedad incluye los métodos parasitológico, serológico y molecular, cada uno de los cuales presenta algunas limitaciones. Considerando que el diagnóstico temprano permite un tratamiento oportuno, existe la necesidad de una prueba simple, rápida y precisa con alta sensibilidad y especificidad, que pueda usarse como una alternativa apropiada y aplicable para el diagnóstico de la leishmaniasis cutánea en áreas endémicas con limitado acceso a los servicios de salud. En este estudio se desarrolló y validó una prueba rápida en formato Lateral Flow Assay (LFA) para el serodiagnóstico de leishmaniasis cutánea, que emplea independientemente Antígeno Total Soluble de Leishmania “ATSL...
20
artículo
Publicado 2005
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We are proposing algoritms to solve problems of flow of an ideal gas in a pipe of constant section. With the compressible flow equations we have determined the pressure and velocity profile for both isothermal and adiabatic flow of air and methane.
