An enduring engineering problem is the creation of a source code too complicated for humans to review and understand. A consequence of a complicated source code is that it requires more effort to be implemented and maintained. Exacerbating the problem is a lack of a proper understanding of exactly what the words “complicated” and “complex” mean, as the definitions of these words are often misconstrued. Some systems are indeed inherently complex, but this does not mean they must be complicated. In our research, several opensource projects were evaluated using software metrics to map the complicatedness of a source code with the ongoing effort to sustain the project. The results of our research show that a relationship exists between a complicated source code and the maintenance effort. It is clear that adhering to proper coding practices and avoiding a complicated code can result ...

Modern software development life cycle models tend to be less formal and less rigid then Waterfall based models of the past. However, creating software without following even the most basic of plans often results in poorly structured, faulty, and hard to maintain software. This paper proposes a practical development model for the purpose for software development. Following some sort of plan produces better code than no plan at all. This model has been shown to be successful even with inexperienced developers.

This paper describes a cooperative thread scheduling mechanism, which can be used effectively on real-time java virtual machines. This scheduler is implemented using a heap-based priority queue which allows for O(log N) processing time. Since this scheduler is strictly cooperative, thread coordination is performed without the requirement of formal java thread synchronization. Though similar outcomes can be achieved through program design, this abstraction allows developers to focus on their application.

North America and South America have a large number of universities, and each university has its owns functions and missions. It has been 18 years since the World Conference on Higher Education (United Nations Educational, Scientific and Cultural Organization - UNESCO, 1998). At that conference, UNESCO analyzed the situation of higher education and stated changes that needed to be made in the university sphere of the 21st century. Examples of these changes include calls for better access to education; a greater variety of teaching styles; and more research and exchange of researches’ results. This document focuses on the details and realities of these changes. This publication also examines how universities in the North (focus in the United States) and South America differ in these implementations.

The Agile Manifesto prescribes less focus on tools and processes, and more focus on human interactions. This is avery important and powerful concept; however, many development organizations have interpreted it in terms ofno procedures and no processes. This is understandable as many activities, such as the design workflow, are thanklessand laborious. When a proper design is missing, the resulting source code may become overly complicated anddifficult to maintain. The software design does not have to be arduous as this workflow can be done without painthrough an adaptation called Responsibility-Driven Design. This adaptation assigns personalities to the internalcomponents of the software to humanize the operation. The new design workflow is completely compatible withagile concepts such as customer interaction, and produces a credible candidate architecture ultimately resulting inthe creat...

El Departamento de Tecnología de la Información Aeroespacial (Ciencias de la Computación VIII) de la Universidad de Würzburg explora muchos aspectos de los sistemas aeroespaciales, incluidos los sistemas seguros de telemetría y telemando. Debido a que los satélites son costosos e indispensables, es necesaria una investigación exhaustiva sobre su protección y seguridad. Los algoritmos de seguridad suelen requerir un uso intensivo de los procesadores, lo que puede privar a las aplicaciones de carga útil de ciclos de ejecución valiosos e incluso de energía del sistema. Por ello, es esencial una selección adecuada de los algoritmos que se utilizarán. Disponer de un mecanismo para la ejecución y el análisis, en dispositivos de capacidades similares a los sistemas y el hardware que se utilizan en las aplicaciones espaciales, es fundamental para una correcta selección de algorit...

This paper describes a cooperative thread scheduling mechanism, which can be used effectively on real-time java virtual machines. This scheduler is implemented using a heap-based priority queue which allows for O(log N) processing time. Since this scheduler is strictly cooperative, thread coordination is performed without the requirement of formal java thread synchronization. Though similar outcomes can be achieved through program design, this abstraction allows developers to focus on their application.

North America and South America have a large number of universities, and each university has its owns functions and missions. It has been 18 years since the World Conference on Higher Education (United Nations Educational, Scientific and Cultural Organization - UNESCO, 1998). At that conference, UNESCO analyzed the situation of higher education and stated changes that needed to be made in the university sphere of the 21st century. Examples of these changes include calls for better access to education; a greater variety of teaching styles; and more research and exchange of researches’ results. This document focuses on the details and realities of these changes. This publication also examines how universities in the North (focus in the United States) and South America differ in these implementations.

The Agile Manifesto prescribes less focus on tools and processes, and more focus on human interactions. This is avery important and powerful concept; however, many development organizations have interpreted it in terms ofno procedures and no processes. This is understandable as many activities, such as the design workflow, are thanklessand laborious. When a proper design is missing, the resulting source code may become overly complicated anddifficult to maintain. The software design does not have to be arduous as this workflow can be done without painthrough an adaptation called Responsibility-Driven Design. This adaptation assigns personalities to the internalcomponents of the software to humanize the operation. The new design workflow is completely compatible withagile concepts such as customer interaction, and produces a credible candidate architecture ultimately resulting inthe creat...

El Departamento de Tecnología de la Información Aeroespacial (Ciencias de la Computación VIII) de la Universidad de Würzburg explora muchos aspectos de los sistemas aeroespaciales, incluidos los sistemas seguros de telemetría y telemando. Debido a que los satélites son costosos e indispensables, es necesaria una investigación exhaustiva sobre su protección y seguridad. Los algoritmos de seguridad suelen requerir un uso intensivo de los procesadores, lo que puede privar a las aplicaciones de carga útil de ciclos de ejecución valiosos e incluso de energía del sistema. Por ello, es esencial una selección adecuada de los algoritmos que se utilizarán. Disponer de un mecanismo para la ejecución y el análisis, en dispositivos de capacidades similares a los sistemas y el hardware que se utilizan en las aplicaciones espaciales, es fundamental para una correcta selección de algorit...

Norteamérica y Sudamérica tienen un gran número de universidades, y de universidad a universidad existe una amplia variedad de funciones y misiones. Han transcurrido 18 años desde la Conferencia Mundial sobre la Educación Superior (Organización de las Naciones Unidas para la Educación, la Ciencia y la Cultura - Unesco, 1998). En esa conferencia, la Unesco analizó la situación de la educación superior y declaró la necesidad de los cambios que debían realizarse en el ámbito universitario del siglo xxi. Ejemplos de estos cambios incluyen las llamadas a un mejor acceso a la educación, a una mayor variedad de estilos de enseñanza, y más investigación e intercambio de hallazgos. El presente documento se enfoca en los detalles y realidades de estos cambios; también incluye el examen de cómo las universidades de Norteamérica (enfocado en Estados Unidos) y Sudamérica difieren...

This article aims to propose a quantitative criterion to evaluate the feasibility of implementing solutions based on linear programming for solving the vehicle routing problem (VRP). An experimental design was used to measure the relative solution time with a proposed linear programming model. The sample was randomized employing three dispersion scenarios of the delivery points: poorly scattered, scattered and very scattered. A linear programming solver was used to determine the time and iterations necessary for solving the model. As a result, the solution time was found in terms of the number of delivery points and the number of iterations for the proposed scenarios, and the time required to solve the problem was predicted using the proposed model. The research concludes with a proposal of the number of viable points to be solved by linear programming.

El presente artículo tiene como objetivo proponer un criterio cuantitativo para evaluar la viabilidad de implementar soluciones basadas en programación lineal para resolver el problema de ruteo de vehículos (VRP). Se utilizó un diseño experimental para medir el tiempo relativo de solución con un modelo de programación lineal propuesto. La muestra utilizada fue aleatoria utilizando tres escenarios de dispersión de puntos de entrega: poco dispersos, dispersos y muy dispersos. Se utilizó un solver de programación lineal con el objetivo de determinar el tiempo y las iteraciones necesarias para encontrar la solución del modelo. Como resultado se encontró el tiempo de solución en función de la cantidad de puntos de entrega, la cantidad de iteraciones para los escenarios propuestos y se pronostica el tiempo necesario para resolver el problema utilizando el modelo propuesto. Se con...

This article aims to propose a quantitative criterion to evaluate the feasibility of implementing solutions based on linear programming for solving the vehicle routing problem (VRP). An experimental design was used to measure the relative solution time with a proposed linear programming model. The sample was randomized employing three dispersion scenarios of the delivery points: poorly scattered, scattered and very scattered. A linear programming solver was used to determine the time and iterations necessary for solving the model. As a result, the solution time was found in terms of the number of delivery points and the number of iterations for the proposed scenarios, and the time required to solve the problem was predicted using the proposed model. The research concludes with a proposal of the number of viable points to be solved by linear programming.