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PCAcálculo: Software Libre para Diseño de Pavimentos de Concreto. PCAcálculo: Free Software for Concrete Pavement Design

PCAcálculo: Software Libre para Diseño de Pavimentos de Concreto. PCAcálculo: Free Software for Concrete Pavement Design

Palabras clave: Pavimentos, Diseño, PCA, Concreto. Abstract Concrete pavement construction has increased in Colombia in recent years, construction of bus rapid transit systems and highways with concrete pavements are daily nationwide. The concrete pavement design method of the PCA (Portland Cement Association) is the most used design method for concrete pavements in Colombia. The PCA initially released the design method of concrete pavements in 1933, which was subsequently updated in 1966 and 1984, the latest version is known as the PCA method - 84, this version included PCAPAV software to solve rapidly pavement design problems, but the software developed for the DOS operating system does not work in the current Windows System. PCAcálculo is a computer
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9 Lee mas

MIA - a free and open source software for gray scale medical image analysis

MIA - a free and open source software for gray scale medical image analysis

As a second alternative one can also prototype directly in a language that gives full control over memory manage- ment like C or C++, where the programmer can explicitly decide when to allocate and free memory chunks. Here, OpenCV [5] that focuses on computer vision tasks in 2D images, and the insight toolkit (ITK) [6] could be used as a basis. Especially the latter is very well suited for bio-medical image processing. It is provided under a per- missive license, comes with an in-depth documentation, is backed by a commercial company, Kitware, and enjoys a large user base. However, various reasons exist why an alternative to prototyping in C++ by using, e.g., ITK might be sought for: Prototyping on a change code - compile - run basis is very time consuming because compiling C++ code is notoriously slow [7], especially when dealing with heavily templated code (like in ITK) that requires that the implementation of most algorithms is provided by includ- ing C++ header files that need to be processed in each compilation run, even though they do not change when the prototype algorithm implemented in the main com- pilation unit changes. In addition, developing in C++ is quite challenging for researchers inexperienced in soft- ware development.
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20 Lee mas

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				COMPUTER TOOLS FOR TEACHING MATHEMATICS

← Volver a los detalles del artículo COMPUTER TOOLS FOR TEACHING MATHEMATICS

Abstract: The modern world faces the paradigms of traditional teaching-learning in contrast to new technologies, which, in addition to the attention of young people and adults, covers almost all branches of science and academia. In this paper we propose the analysis of computer tools for the development of didactic strategies for the teaching of mathematics, an area of study that has historically generated great difficulties in the student sector, From a constructivist perspective and applying the qualitative-quantitative method, the information collected is managed through interviews, surveys and observation forms; those applied to 52 first-level PUCESE students, two teachers in the area and one manager; lead to the analysis and generation of results that show that in the educational environment in question, a traditional teaching-learning style is maintained, which is not necessarily mediated with educational technological tools, but also reflects the interest of students to integrate educational software and simulations, such as support resources, for math classes. Based on the results, free educational software Exe-Learning is proposed and it is demonstrated, through statistical analysis, that this resource strengthens the teaching-learning process of mathematics.
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7 Lee mas

Virtual laboratory of free software for libraries

Virtual laboratory of free software for libraries

Esta actividad, que empezó sólo para probar y promocionar software libre, ha permitido que la Facultad creara un espacio de aprendizaje tanto para profesores como para estudiantes, ofreciendo material de prácticas docentes para diferentes asignaturas. La posibilidad de in- teractuar directamente con los pro- gramas, así como la facilidad de ac- ceso a todas sus funciones (evitan- do así el a veces farragoso proceso de instalación en una unidad local), ha permitido a los participantes en este proyecto conocer de primera mano diferentes soluciones gra- tuitas, comprobar su utilidad ante problemas y necesidades concre- tas, y resolver dudas e inquietudes de manera individual. Más allá de las simples demos o charlas de di- fusión, con este laboratorio virtual hemos pretendido difundir este tipo de programas de una manera prác-
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7 Lee mas

Metodologías para la evaluación de herramientas Free/Open Source para pruebas de software

Metodologías para la evaluación de herramientas Free/Open Source para pruebas de software

Criterios planteados: WG (Software Reuse Working Group) identificó 9 áreas temáticas que se consideran importantes para medir la madurez en la reutilización del software, como ser documentación (guías de instalación, manual de usuario, foros, tutoriales, etc.), extensibilidad, cuestiones de propiedad intelectual, modularidad, empaquetado, portabilidad, cumplimiento de estándares, soporte (Apoyo técnico, comunidad de usuarios, ayuda online, etc.) y verificación y pruebas.

5 Lee mas

PRODUCTION OF KNOWLEDGE AND FREE SOFTWARE IN VENEZUELA

PRODUCTION OF KNOWLEDGE AND FREE SOFTWARE IN VENEZUELA

El presente estudio se encuentra ubicado en la línea de investigación Filosofía y Sociopolítica de la Educación. Presenta los resultados del trabajo Producción de Conocimientos y Software Libre, derivado de una política del Estado venezolano para superar la dependencia tecnológica y alcanzar el desarrollo de la nación, potenciando la ciencia, la tecnología y la innovación. Nuestro objetivo, es realizar un aporte al conocimiento por vía de la crítica, trascendiendo lo ideológico, acerca del proceso de cambios que se desarrolla en el país en relación con la producción de conocimientos y el software libre en el Subsistema de Educación Universitaria. Centramos el problema en las diversas y antagónicas concepciones teóricas de libertad, defendidas en la lucha política del liberalismo y reproducidas por algunos latinoamericanos inspirados en el pensamiento de Isaiah Berlin, Hayek, Friedman y Fukuyama, y por el punto de vista revolucionario en la visión de hombre libre de Carlos Marx; los aportes teóricos de Engels, Lenin, Gramsci, Althuser y Dussel; el testimonio del Presidente Chávez, Kirshner, Lula y Correa. Epistemológicamente nos ubicamos en el Materialismo Histórico y en el Método Dialéctico Concreto. La información facto-perceptible, huellas escritas y testimonios orales, la obtuvimos mediante técnica documental y dialógica, analizada hermenéutica y categorialmente. Concluimos en la urgente transformación del sistema educativo universitario y en su necesario aporte al proceso de cambios de la nación, con planes y proyectos para la independencia tecnológica, el desarrollo de recursos hardware y software con estándares abiertos basados en conocimiento libre desde nuestra realidad, superando las contradicciones presentes y asumiendo un compromiso ético político desde una práctica revolucionaria.
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17 Lee mas

Free software communities in argentina: motivations, participation, militancy

Free software communities in argentina: motivations, participation, militancy

“En relación directa con el desarrollo de las tecnologías de la información (…) uno de los fenómenos que se ha arraigado entre los profesionales del mundo informático, pero que se está comenzando a desarrollar mucho más allá de su contexto de surgimiento hacia un conflicto general, es respecto al control de los lenguajes de programación y de los variados medios relacionados con la comunicación asistida por computadora. De un lado, observamos una concentración de poder en muy pocos núcleos centrales que controlan el mundo en términos de la transmisión y distribución de ideas, lenguajes, programas, y cosas por el estilo. Del otro lado, podemos ver síntomas emergentes de resistencia a esta tendencia, manifestados, por ejemplo, en la acción de los hackers, piratas informáticos, redes auto- administradas, y demás” (Melucci, 1996: 194 [traducción propia]). La emergencia del movimiento de software libre se enmarca así en una disputa de mayor alcance en relación con la informática y el poder sobre el control de la información y las redes 5 . El mismo puede ser entendido, de este modo, como un
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20 Lee mas

El Software libre y open source (FLOSS - Free/Libre Open source Software) en la industria del software global y de la Argentina

El Software libre y open source (FLOSS - Free/Libre Open source Software) en la industria del software global y de la Argentina

Con respecto al primer punto, se define a un programa informático es FLOSS si los usuarios tienen la libertad de ejecutar, copiar, distribuir, estudiar, modificar y mejorar el producto, para lo cuál su código debe estar abierto (ser open source - OS). Esta libertad se garantiza estableciendo con el software una forma particular de licencia, conocida como copyleft, que establece lo contrario de los derechos de propiedad privada: es un tipo de licencia sobre un software que obliga al que lo use, o lo modifique, a mantener libre y en la esfera pública el código que pudiera producir a partir de él. Esto mantiene el software protegido de ser apropiado por particulares, y garantiza que los desarrollos que se hagan a partir de él, también lo sean.
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5 Lee mas

Development of a computer aided diagnosis software for the evaluation of lung nodules in computed tomography scans

Development of a computer aided diagnosis software for the evaluation of lung nodules in computed tomography scans

When the tumor has extended from the lung to other intra-thoracic regions, other symptoms may appear. When the pleura or the pericardium is involved, the patient may refer breathlessness and chest pain. The breathlessness may be explained by the pleural and pericardial effusions [12]. When tumours are located in the right upper lobe, their growth might compress the superior vena cava. These patients present a superior vena cava syndrome, which includes the following symptoms: headaches, facial fullness, plethora, oedema, congested veins in the neck and chest. Only 10% of the patients with small cell lung cancer present this particular syndrome [12]. Other apical tumours may involve the superior sympathetic chain, causing Horner’s syndrome. If the brachial plexus is compressed by the tumour, shoulder and neck pain may appear, as well as atrophy of the hand muscles [12]. Tumours that invade the mediastinum may cause dysphagia due to the compression of the oesophagus [12]. Metastasis to distant organs appears with a different set of symptoms. Patients usually present weight loss, which indicates a probable poor outcome. Usually, loosing more than 20% of the weight (compar- ing with a one month baseline) indicates a metastatic disease [12]. The most common metastasis site for lung cancer is the liver, which usually displays the associated weight loss. Bone metastasis may occur, usually in ribs, vertebrae, humerus or femur, causing localised pain [12]. Brain metastasis often results in symptoms such as confusion, personality changes, and seizures. Lung cancer can also spread to the adrenal glands, and the skin [12]. Para-neoplastic syndromes may also appear in patients with lung cancer. These are due to the production of ectopic hormones or peptides. This syndrome usually affects 10 to 20% of the patients with lung cancer [12].
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38 Lee mas

Computer Vision Onboard UAVs for Civilian Tasks

Computer Vision Onboard UAVs for Civilian Tasks

Results for tests using a tracking algorithm for scene elements are shown on Fig. Reconstructed features are shown as crosses. In the figure, some reference planes were added by hand i[r]

30 Lee mas

Mouse based interpersonal computer for individual learning

Mouse based interpersonal computer for individual learning

The introduction of technology into the classroom has enabled interactive learning, which in turn allows students to deepen their participation and engage in more reflective action (Beauchamp & Kennewell, 2010). One of the most common technology models is to provide each student with their own personal computer (Weston & Bain, 2010). This model, known as 1:1, has been adopted in many countries like Uruguay, Portugal, Peru, Rwanda, among others. The two major projects of this type are the Intel World Ahead Program (Intel Corporation, 2006) and the One Laptop per Child (One Laptop per Child Foundation, 2006). The latter hopes to minimize the cost of implementing such technology per student, with the goal of lowering prices to US$100 per computer. As of now, the cost of acquiring such computers is close to US$200 (Kraemer, Dedrick, & Sharma, 2009). Even at just US$100 per device, the One Laptop per Child solution is still much too expensive to be implemented in most developing communities around the world (Trucano, 2010).
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180 Lee mas

A computer-based design assistant for induction motors

A computer-based design assistant for induction motors

The analysis models built into the design assistant are the manufacturing simulator and the induction motor analysis program (IMAP). The IMAP first derives the steady[r]

9 Lee mas

Computer-suported cooperative work for music applications

Computer-suported cooperative work for music applications

common user. Mapping the human senses to technologically advanced devices is an ever- present activity in modern society. Because the sensory modalities are highly learned and natural, we try to find ways for machines to comply with this communication form. Technologies for image processing, voice interaction and tactile and manual interface control are burgeoning rapidly, but the dimensions of taste and smell are yet to be broadly addressed. With computers Multimodality had an unprecedented deployment through experimental projects, even if the standard interaction paradigm between Human beings and computers is persistently based on a keyboard for discrete data input, a mouse for continuous and non-linear interaction and screen sound speakers for visual and auditory feed-back. Specifically in the case of Music Technology tactile interfaces have a major role in the design of musical instruments. Early examples of non traditional touch sensing applied to the control of electronic music devices are abundant. Much has been done over the last decades in extending the boundaries of traditional music instruments with electronic and digital technology, by researchers such as Tod Machover and Joe Paradiso at the Hyper-Instruments Group at the MIT Media Lab 44 . However, such developments date back to the early 20’s with electronic music Instruments designed by Lev Termin, such as the well known “Theremin”, the "Rhythmicon", the "Terpistone" or the "ThereminCello" 45 . More advanced interaction devices came up in the 50´s, such as a large scale Touch-Bench designed by Oskar Fischinger in 1955 (Fischinger, O., 1955).
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204 Lee mas

Towards a virtualized Internet for computer networking assignments

Towards a virtualized Internet for computer networking assignments

Abstract— By combining virtualization technologies, virtual private network techniques and parameterization of network scenarios it is possible to enhance a networking laboratory, typ[r]

6 Lee mas

TítuloSPH approaches for free surface flow for engineering applications

TítuloSPH approaches for free surface flow for engineering applications

The resolution of many problems related with large deformations, complex domains, etc, takes up a high computational effort if the classical numerical techniques (finite elements, finite differences, etc) are used. For this reason, in last years other methods have been proposed. One of them are the so-called “meshless methods”. Its main feature is to avoid the rigid connectivity needed in other usual numerical formulations to discretize the integration domain of the problem.

11 Lee mas

For Free, Milagro Para El Acne Completo Descargar Gratis

For Free, Milagro Para El Acne Completo Descargar Gratis

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5 Lee mas

Electronic voting system for computer supported collaborative learning

Electronic voting system for computer supported collaborative learning

This subsystem aims to provide the basic functionality to share any kind of resource within the collaborative group activity. To this end, the most fundamental abstraction here is a room, which is defined in this subsystem to represent all virtual spaces (i.e. sharing applications) where any kind of sharing is performed. Users share a room by making contributions all the time. The result of the interaction is then updated in the sharing application to other participants by the mechanisms provided by another subsystem called EVSCommunication. In a collaboration context it is also important to take into account session moderation in order for a collaborative session to be more productive. In our platform these needs are met by using the coordinator features of the EVS Coordination subsystem.
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99 Lee mas

A collaborative search model for computer supported classroom activities

A collaborative search model for computer supported classroom activities

It is interesting to note that the work following the CSPM worsens the collaboration criteria that relate to communication within the group. However this evaluation, which initially seems negative, can have a second interpretation. First of all, the positive results obtained in the evaluation of Awareness, Coordination and Communication in the case of students who worked without a script is due to the fact that they interacted with each other only at the beginning of the activity –when the work was distributed- and at the end of the activity -when the different parts are put together. Because of this, students feel that they don’t have any communication problems, and that work within the group was fluent; however what is actually happening is that these students have not worked collaboratively. Students who follow the CSPM are forced to interact with each other, and so they are faced for the first time with the idea of following their teammates’ work. This logically leads them to perceive that communication within the group was difficult. Also, because they were not working with tools designed to support collaboration, they were forced to interrupt each other, which was also perceived as a communication problem.
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61 Lee mas

Computer rooms as a transition ramp for distance education

Computer rooms as a transition ramp for distance education

This story focuses on two aspects, on the one hand it is visible how technology has come to «permeate» the teaching of veterinary radiology. In addition, the problems and perspectives that arise when creating blended learning environments where the teacher-student relationship is separated in time and / or space for a large part of the educational process are presented. Analyzing from different perspectives the characteristics of this pedagogical proposal, finding in the computer rooms of the Faculty a real transition ramp to consolidate strategies of mediatization of teaching.
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5 Lee mas

Computer Vision Systems for Coated sheets & Decorated sheets

Computer Vision Systems for Coated sheets & Decorated sheets

8 S AC M I C O M P U T E R V I S I O N S YS T E M S Eclipsim-Coat is a brand new Vision System for on-line or off-line Quality Control of coated metal sheets. Thanks to a very high resolution line- scan camera and the Chrometriq lighting system, Eclipsim-Coat can reliably identify all coating line flaws with an accuracy of 0.15 mm.

12 Lee mas

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