El presente trabajo presenta los resultados de una investigacion de mercado desarrollada por el g... more El presente trabajo presenta los resultados de una investigacion de mercado desarrollada por el grupo de investigacion Robotica Aplicada en el area metropolitana centro occidente (AMCO), que busca identificar la viabilidad de desarrollar y comercializar un dispositivo fotovoltaico que permita a los motociclistas de la region recargar sus dispositivos electronicos mientras el vehiculo se encuentra en uso.
Pereira : Universidad Tecnológica de Pereira, 2007
From fourier to wavelets analysis-Continue Wavelet Transform (CWT) RESUMEN A la par con los avanc... more From fourier to wavelets analysis-Continue Wavelet Transform (CWT) RESUMEN A la par con los avances tecnológicos se han desarrollado herramientas matemáticas que responden mejor a las necesidades cotidianas de la humanidad; tal es el caso de los procesos de comunicación (Transmisión / Recepción de señales) quienes con el paso del tiempo han evolucionado desde apoyarse en técnicas como la Transformada de Fourier con sus consabidas limitaciones, hasta estrategias de cálculo que ofrecen mayores ventajas como la Transformada Wavelet. Este documento presenta de manera sencilla las características básicas de las Wavelets y sus aplicaciones a la ingeniería, ilustradas a través de algunos ejemplos básicos implementados a través de Matlab 7.0.
Lissajous figures have been a very important tool in physics and engineering, these let us analyz... more Lissajous figures have been a very important tool in physics and engineering, these let us analyze and interprete graphically the interaction on a particle of two perpendicular movements, a process that otherwise would be more complex to understand. This paper(which can be considered the first of two on this topic) is intended to implement a strategy that promotes the teachinglearning process to complement the traditional study of Lissajous figures through the implementation of different tools (including hardware), emphasizing that the validity of the figures has not yet been lost, but its construction , representation and reading have been facilitated.
The rapidly increasing emergence of computers and cameras, the reduction in their cost and the gr... more The rapidly increasing emergence of computers and cameras, the reduction in their cost and the growing implementat ion of efficient algorithms for pattern recognition process, make us evaluate the relevance and importance of implementing systems of quality control in production processes that can eventually replace or complement work done by human beings. This article aims to create a discussion on the importance and impact of the im plementation of computer vision systems in production processes.
High levels of integration of integrated circuits and the low acquisition cost of these devices, ... more High levels of integration of integrated circuits and the low acquisition cost of these devices, have brought an increased use of these as part of all types of electronic devices ranging from appliances to medical equipment. There is an important variety of manufacturers of microcontrollers within those highlighted Atmel, Motorola, Texas Instruments, Toshiba and microchip, each bringing benefits to be discussed according to the application being developed. The authors of this paper has selected Microchip technology, better known as PIC, because of its popularity in many academic and commercial developments in the search for alternatives for their programming primarily in the Windows environment for this paper. As part of the work of this article, a series of simple counting programs have been developed in different programming levels.
The following paper introduces a summary of the Lego Mindstorms robot set and its possible use in... more The following paper introduces a summary of the Lego Mindstorms robot set and its possible use in the teaching of robotics Programming. In the same way constructionist methodology is proposed as a way to introduce students in the field of robotics and emphasizes the application of this methodology through the use of equipment as mentioned above.
En 1665 se creo la primera revista de dedicion cientifica a las ciencias llamada transactions of ... more En 1665 se creo la primera revista de dedicion cientifica a las ciencias llamada transactions of the Royal Society de Inglaterra, la cual aun se encuentra en produccion. Esta se origino para realizar avances en el conocimiento basandose en los resultados de otros expertos y evitar asi la duplicacion de resultados. De esta forma se establecieron los principios de prioridad cientifica y la revision por pares. Hasta entonces, los resultados de investigacion se compartian de forma inmediata a traves de las cartas (letters) que se enviaban los investigadores entre si o a las comunidades cientificas [1]. La evaluacion, la edicion, la impresion en papel y el envio fisico por correos de los articulos acarreaba un trabajo que requeria de unos cargos economicos significativos que, inclusive, en muchos casos no podian ser cubiertos por los propios investigadores. Alrededor de esta situacion, es conocido y anecdotico el caso de Edmund Halley quien apoyo economicamente con el equivalente a un an...
Revista Facultad de Ingeniería Universidad de Antioquia, 2021
Today, image forgery is common due to the massification of low-cost/high-resolution digital camer... more Today, image forgery is common due to the massification of low-cost/high-resolution digital cameras, along with the accessibility of computer programs for image processing. All media is affected by this issue, which makes the public doubt the news. Though image modification is a typical process in entertainment, when images are taken as evidence in a legal process, modification cannot be considered trivial. Digital forensics has the challenge of ensuring the accuracy and integrity of digital images to overcome this issue. This investigation introduces an algorithm to detect the main types of pixel-based alterations such as copy-move forgery, resampling, and splicing in digital images. For the evaluation of the algorithm, CVLAB, CASIA V1, Columbia, and Columbia Uncompressed datasets were used. Of 7100 images evaluated, 3666 were unaltered, 791 had resampling, 2213 had splicing, and 430 had copy-move forgeries. The algorithm detected all proposed forgery pixel methods with an accuracy...
The article presents the results of the design and construction, with appropriate technology, of ... more The article presents the results of the design and construction, with appropriate technology, of a device which served as a test model for the production of Edge-glued panels in the region (Pereira and Dosquebradas). Considering critical variables of the process: pressing pressure, temperature, and processing time.
In this article, we study systems Wavelet first generation as is the Wavelet Haar (the oldest, si... more In this article, we study systems Wavelet first generation as is the Wavelet Haar (the oldest, simplest all), with their respective features; Haar for defining the role and function Wavelet scale, which allows (this particular case) analysis and representation of the function f (t) = t in the various spaces generated (V0, V1, W0, W1), getting results indicating that such Wavelet is a "GOOD" Wavelet system. This paper is a contribution to teaching and learning in teaching the implementation of the "Wavelet Systems" in its basic concept.
Una Revisión General de los Artículos de Revisión A primera vista, escribir un artículo de revisi... more Una Revisión General de los Artículos de Revisión A primera vista, escribir un artículo de revisión pareciera una tarea fácil de cumplir. Algunos académicos consideran desprevenidamente que es solo una lectura resumida de unos cuantos trabajos sobre un tema en particular, pero la tarea es algo más compleja.
Plagiarism issue in scientific publishing Plagiarism is an issue that is present in many artistic... more Plagiarism issue in scientific publishing Plagiarism is an issue that is present in many artistic and academic areas. Music plagiarism is a recurrent topic in media and news due to it is more detectable for people [1]. Unfortunately, this matter is also present in academic production from primary school to high-level research.
El presente trabajo presenta los resultados de una investigacion de mercado desarrollada por el g... more El presente trabajo presenta los resultados de una investigacion de mercado desarrollada por el grupo de investigacion Robotica Aplicada en el area metropolitana centro occidente (AMCO), que busca identificar la viabilidad de desarrollar y comercializar un dispositivo fotovoltaico que permita a los motociclistas de la region recargar sus dispositivos electronicos mientras el vehiculo se encuentra en uso.
Pereira : Universidad Tecnológica de Pereira, 2007
From fourier to wavelets analysis-Continue Wavelet Transform (CWT) RESUMEN A la par con los avanc... more From fourier to wavelets analysis-Continue Wavelet Transform (CWT) RESUMEN A la par con los avances tecnológicos se han desarrollado herramientas matemáticas que responden mejor a las necesidades cotidianas de la humanidad; tal es el caso de los procesos de comunicación (Transmisión / Recepción de señales) quienes con el paso del tiempo han evolucionado desde apoyarse en técnicas como la Transformada de Fourier con sus consabidas limitaciones, hasta estrategias de cálculo que ofrecen mayores ventajas como la Transformada Wavelet. Este documento presenta de manera sencilla las características básicas de las Wavelets y sus aplicaciones a la ingeniería, ilustradas a través de algunos ejemplos básicos implementados a través de Matlab 7.0.
Lissajous figures have been a very important tool in physics and engineering, these let us analyz... more Lissajous figures have been a very important tool in physics and engineering, these let us analyze and interprete graphically the interaction on a particle of two perpendicular movements, a process that otherwise would be more complex to understand. This paper(which can be considered the first of two on this topic) is intended to implement a strategy that promotes the teachinglearning process to complement the traditional study of Lissajous figures through the implementation of different tools (including hardware), emphasizing that the validity of the figures has not yet been lost, but its construction , representation and reading have been facilitated.
The rapidly increasing emergence of computers and cameras, the reduction in their cost and the gr... more The rapidly increasing emergence of computers and cameras, the reduction in their cost and the growing implementat ion of efficient algorithms for pattern recognition process, make us evaluate the relevance and importance of implementing systems of quality control in production processes that can eventually replace or complement work done by human beings. This article aims to create a discussion on the importance and impact of the im plementation of computer vision systems in production processes.
High levels of integration of integrated circuits and the low acquisition cost of these devices, ... more High levels of integration of integrated circuits and the low acquisition cost of these devices, have brought an increased use of these as part of all types of electronic devices ranging from appliances to medical equipment. There is an important variety of manufacturers of microcontrollers within those highlighted Atmel, Motorola, Texas Instruments, Toshiba and microchip, each bringing benefits to be discussed according to the application being developed. The authors of this paper has selected Microchip technology, better known as PIC, because of its popularity in many academic and commercial developments in the search for alternatives for their programming primarily in the Windows environment for this paper. As part of the work of this article, a series of simple counting programs have been developed in different programming levels.
The following paper introduces a summary of the Lego Mindstorms robot set and its possible use in... more The following paper introduces a summary of the Lego Mindstorms robot set and its possible use in the teaching of robotics Programming. In the same way constructionist methodology is proposed as a way to introduce students in the field of robotics and emphasizes the application of this methodology through the use of equipment as mentioned above.
En 1665 se creo la primera revista de dedicion cientifica a las ciencias llamada transactions of ... more En 1665 se creo la primera revista de dedicion cientifica a las ciencias llamada transactions of the Royal Society de Inglaterra, la cual aun se encuentra en produccion. Esta se origino para realizar avances en el conocimiento basandose en los resultados de otros expertos y evitar asi la duplicacion de resultados. De esta forma se establecieron los principios de prioridad cientifica y la revision por pares. Hasta entonces, los resultados de investigacion se compartian de forma inmediata a traves de las cartas (letters) que se enviaban los investigadores entre si o a las comunidades cientificas [1]. La evaluacion, la edicion, la impresion en papel y el envio fisico por correos de los articulos acarreaba un trabajo que requeria de unos cargos economicos significativos que, inclusive, en muchos casos no podian ser cubiertos por los propios investigadores. Alrededor de esta situacion, es conocido y anecdotico el caso de Edmund Halley quien apoyo economicamente con el equivalente a un an...
Revista Facultad de Ingeniería Universidad de Antioquia, 2021
Today, image forgery is common due to the massification of low-cost/high-resolution digital camer... more Today, image forgery is common due to the massification of low-cost/high-resolution digital cameras, along with the accessibility of computer programs for image processing. All media is affected by this issue, which makes the public doubt the news. Though image modification is a typical process in entertainment, when images are taken as evidence in a legal process, modification cannot be considered trivial. Digital forensics has the challenge of ensuring the accuracy and integrity of digital images to overcome this issue. This investigation introduces an algorithm to detect the main types of pixel-based alterations such as copy-move forgery, resampling, and splicing in digital images. For the evaluation of the algorithm, CVLAB, CASIA V1, Columbia, and Columbia Uncompressed datasets were used. Of 7100 images evaluated, 3666 were unaltered, 791 had resampling, 2213 had splicing, and 430 had copy-move forgeries. The algorithm detected all proposed forgery pixel methods with an accuracy...
The article presents the results of the design and construction, with appropriate technology, of ... more The article presents the results of the design and construction, with appropriate technology, of a device which served as a test model for the production of Edge-glued panels in the region (Pereira and Dosquebradas). Considering critical variables of the process: pressing pressure, temperature, and processing time.
In this article, we study systems Wavelet first generation as is the Wavelet Haar (the oldest, si... more In this article, we study systems Wavelet first generation as is the Wavelet Haar (the oldest, simplest all), with their respective features; Haar for defining the role and function Wavelet scale, which allows (this particular case) analysis and representation of the function f (t) = t in the various spaces generated (V0, V1, W0, W1), getting results indicating that such Wavelet is a "GOOD" Wavelet system. This paper is a contribution to teaching and learning in teaching the implementation of the "Wavelet Systems" in its basic concept.
Una Revisión General de los Artículos de Revisión A primera vista, escribir un artículo de revisi... more Una Revisión General de los Artículos de Revisión A primera vista, escribir un artículo de revisión pareciera una tarea fácil de cumplir. Algunos académicos consideran desprevenidamente que es solo una lectura resumida de unos cuantos trabajos sobre un tema en particular, pero la tarea es algo más compleja.
Plagiarism issue in scientific publishing Plagiarism is an issue that is present in many artistic... more Plagiarism issue in scientific publishing Plagiarism is an issue that is present in many artistic and academic areas. Music plagiarism is a recurrent topic in media and news due to it is more detectable for people [1]. Unfortunately, this matter is also present in academic production from primary school to high-level research.
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