Can Network Analysis Techniques help to Predict Design Dependencies? An Initial Study

The degree of dependencies among the modules of a software system is a key attribute to characterize its design structure and its ability to evolve over time. Several design problems are often correlated with undesired dependencies among modules. Being able to anticipate those problems is important for developers, so they can plan early for maintenance and refactoring efforts. However, existing tools are limited to detecting undesired dependencies once they appeared in the system. In this work, we investigate whether module dependencies can be predicted (before they actually appear). Since the module structure can be regarded as a network, i.e, a dependency graph, we leverage on network features to analyze the dynamics of such a structure. In particular, we apply link prediction techniques for this task. We conducted an evaluation on two Java projects across several versions, using link prediction and machine learning techniques, and assessed their performance for identifying new dependencies from a project version to the next one. The results, although preliminary, show that the link prediction approach is feasible for package dependencies. Also, this work opens opportunities for further development of software-specific strategies for dependency prediction.Comment: Accepted at ICSA 201

Dirac's theorem for random regular graphs

We prove a `resilience' version of Dirac's theorem in the setting of random regular graphs. More precisely, we show that, whenever $d$ is sufficiently large compared to $\varepsilon>0$, a.a.s. the following holds: let $G'$ be any subgraph of the random $n$-vertex $d$-regular graph $G_{n,d}$ with minimum degree at least $(1/2+\varepsilon)d$. Then $G'$ is Hamiltonian. This proves a conjecture of Ben-Shimon, Krivelevich and Sudakov. Our result is best possible: firstly, the condition that $d$ is large cannot be omitted, and secondly, the minimum degree bound cannot be improved.Comment: Final accepted version, to appear in Combinatorics, Probability & Computin

Resilient degree sequences with respect to Hamilton cycles and matchings in random graphs

P\'osa's theorem states that any graph $G$ whose degree sequence $d_1 \le \ldots \le d_n$ satisfies $d_i \ge i+1$ for all $i < n/2$ has a Hamilton cycle. This degree condition is best possible. We show that a similar result holds for suitable subgraphs $G$ of random graphs, i.e. we prove a `resilience version' of P\'osa's theorem: if $pn \ge C \log n$ and the $i$-th vertex degree (ordered increasingly) of $G \subseteq G_{n,p}$ is at least $(i+o(n))p$ for all $i<n/2$, then $G$ has a Hamilton cycle. This is essentially best possible and strengthens a resilience version of Dirac's theorem obtained by Lee and Sudakov. Chv\'atal's theorem generalises P\'osa's theorem and characterises all degree sequences which ensure the existence of a Hamilton cycle. We show that a natural guess for a resilience version of Chv\'atal's theorem fails to be true. We formulate a conjecture which would repair this guess, and show that the corresponding degree conditions ensure the existence of a perfect matching in any subgraph of $G_{n,p}$ which satisfies these conditions. This provides an asymptotic characterisation of all degree sequences which resiliently guarantee the existence of a perfect matching.Comment: To appear in the Electronic Journal of Combinatorics. This version corrects a couple of typo

Ecuación vectorial de una recta: una propuesta didáctica desde la teoría antropológica de lo didáctico

La presente investigación surge en el programa “perfeccionamiento en matemática para profesores de enseñanza media” realizado en el IUFM le Mirail, Universidad de Toulouse, Francia. El estudio consiste en el diseño de una propuesta didáctica para el aprendizaje de la ecuación vectorial de una recta en el espacio, en estudiantes de 16 a 18 años, el interés nace por la incorporación de estos temas en el curriculum nacional. Para el diseño de la propuesta se utiliza elementos de la Teoría Antropológica de lo Didáctico (TAD), donde se entenderá como organización matemática, a un conjunto de tipos de tareas, de técnicas o procedimientos para resolver estas tareas y de definiciones, propiedades y teoremas que permitan describir y justificar la resolución de la tarea. Entre los elementos que aportan en el surgimiento de la organización matemática, se distinguen, tipos de tareas como, establecer si puntos del plano o el espacio son colineales y determinar las condiciones para que un tercer punto sea colineal a dos puntos dados, en el plano o en el espacio

La intervención del trabajo social en las adicciones dentro del programa juego responsable

El presente trabajo tiene la finalidad de estudiar la intervención del trabajador social y lleva a reflexionar sobre cuál es la intervención del trabajador social en las adicciones en el Programa Juego Responsable. Las razones que motivan la investigación surgen de observar, a través de los medios de comunicación, el incremento del juego en los Casinos, la constante inauguración de los mismos y la presencia de personas de distintos sectores económicos y sociales en la provincia de Mendoza. Esto genera inquietud acerca de las consecuencias que estos hechos provocan en la vida cotidiana de los sujetos, como por ejemplo, la problemática de las adicciones al juego.Fil: Bravo, Daniela. Universidad Nacional de Cuyo. Facultad de Ciencias Políticas y Sociales.Fil: Díaz, Yésica. Universidad Nacional de Cuyo. Facultad de Ciencias Políticas y Sociales

表紙・裏表紙（目次）

PREVENCIÓN EN SALUD ORAL PREVENCIÓN EN SALUD ORAL CONCEPTOS DE SALUD DEFINICIÓN DE ENFERMEDAD PROCESO SALUD - ENFERMEDAD SALUD PUBLICA SALUD BUCAL HISTORIA NATURAL DE LA ENFERMEDAD PERIODOS DE LA HISTORIA NATURAL DE LA ENFERMEDAD NIVELES DE PREVENCIÓN NIVELES DE ACTUACIÓN PREVENTIVA: CONCEPTO ACTUAL NIVELES DE APLICACIÓN DE LOS MÉTODOS PREVENTIVOS ESTRATEGIAS DE PREVENCIÓN EDUCACIÓN PARA LA SALUD CONCEPTO DE EDUCACIÓN CONCEPTO DE SALUD CONCEPTO DE EDUCACIÓN PARA LA SALUD OBJETIVOS DE LA EDUCACIÓN PARA LA SALUD CAMPOS DE ACCIÓN EN EDUCACIÓN PARA LA SALUD PRINCIPIOS EN EDUCACIÓN PARA LA SALUD PRACTICA DE LA EDUCACIÓN PARA LA SALUD FACTORES QUE INFLUYEN EN LA ENSEÑANZA MÉTODOS DE EDUCACIÓN PARA LA SALUD MEDIOS Y AYUDAS DE EDUCACIÓN PARA LA SALUD PLANIFICACIÓN EN EDUCACIÓN PARA LA SALUD PROMOCIÓN DE LA SALUD CONCEPTO Y DEFINICIONES DE PROMOCIÓN DE LA SALUD PROGRAMAS ESCOLARES EN SALUD ORAL PROGRAMA PREVENTIVO PROMOCIONAL DE SALUD ORA

Multitemoral study of alluvion gold dynamics of exploitation in bajo cauca antioqueño in the years 2014 and 2017 through satellite images

22 páginas : imágenes.La explotación de oro aluvial es una de las actividades con mayores índices de ilegalidad del país, puesto que sólo el 2% de cumple con los requisitos legales. La explotación de oro de aluvión genera grandes impactos ambientales sobre el medio físico, biótico y social afectando grandes extensiones del territorio colombiano en los cuales se han identificado 26 departamentos con presencia de extracción de oro de aluvión, entre estos los departamentos que lideran las estadísticas son Antioquia y Chocó. Para determinar la dinámica de la explotación de oro de aluvión en los municipios de Zaragoza, el Bagre y Nechí se realizó a través de imágenes satelitales LANDSAT 8 y SENTINEL 2 correspondientes a los años 2014 y 2017 respectivamente. Por medio del software PCI geomática se realizó la corrección atmosférica a nivel de terreno para obtener valores de reflectancia, posteriormente se realizó la clasificación supervisada seguido de los procedimientos de post clasificación como son agregación de clases, edición, y evaluación de precisión. Posteriormente se calculó el porcentaje de área cobertura para cada año con el fin de determinar el incremento o disminución de explotación de oro de aluvión en el área de estudio. Por último se aplicó filtro de paso bajo y se realizó la transformación a formato vectorial para generar las salidas gráficas. Los resultados obtenidos demuestran un incremento del 936% en las coberturas de minería y pozos, y una disminución de las ciénagas y bosques del 97,4 y 10% respectivamente entre los años 2014 al 2017Alluvial gold exploitation is one of the activities with the highest rates of illegality in the country, since only 2% of compliance with legal requirements. The exploitation of alluvial gold generates large environmental impacts on the physical, biotic and social environment affecting great areas of Colombian territory, in which 26 departments have been identified with the presence of alluvial gold extraction, among these the departments that lead the statistics are Antioquia and Chocó. To determine the dynamics of alluvial gold exploitation in the town of Zaragoza, Bagre and Nechí was carried out through satellite images LANDSAT 8 and SENTINEL 2 corresponding to the years 2014 and 2017 respectively. Subsequently, the percentage of coverage area for each year was calculated in order to determine the increase or decrease in the exploitation of alluvial gold in the study area. Finally, a low-pass filter was applied and the transformation was made to vector format to generate the graphic outputs. The results obtained show an increase of 936% in the coverage of mining and wells, and a decrease in the marshes and forests of 97.4 and 10% respectively between the years 2014 to 201

Mozambikes : a case study of social entrepreneurship through

This dissertation has been prepared within the overall theme of Social Entrepreneurship and Development. It has been developed in case study format beginning with a literature review, followed by the actual case study, teaching notes and final conclusions and future research. The case study analyses Mozambikes, a for-profit social enterprise based in Mozambique, which intends to use bicycles to empower Mozambicans and improve their quality of life. There are two main objectives to this dissertation. The first is for it to be used for teaching classes of social entrepreneurship, social innovation and business strategy. The second is to unveil the real potential of the business model of Mozambikes, and understand whether or not it is sustainable in the long run. For the development of the case study, fieldwork and field research were conducted in person by the author in Maputo, Mozambique. During one month, interviews were made to the founders of Mozambikes, accompanied by visits to the office and factory of the enterprise to better understand its business model. Part of the research, including the relevant theories explored in the Literature Review, was done in Lisbon, Portugal. We can conclude that Mozambikes has real potential to become a social enterprise that is sustainable in the long run and, at the same time, has real impact in the lives of Mozambicans. In order for this to happen, it should broaden its product portfolio while maintaining a good value proposition for corporations. At the same time, it should focus in key partnerships as to expand and give incentive to the use of bicycles in the country, thus increasing the wholesale branch of its business model in Mozambique's main cities.Esta dissertação foi preparada no contexto do tema de Empreendedorismo Social e Desenvolvimento. Foi desenvolvida no formato de Estudo de Caso e é introduzida por uma revisão sobre a literatura relevante, seguida pelo Estudo de Caso, notas para ensinar o Caso no contexto de uma aula e, por ultimo, conclusões e indicações para pesquisas futuras. O Estudo de Caso analisa a Mozambikes, uma empresa social com fins lucrativos baseada em Moçambique, que pretende utilizar bicicletas para melhorar a qualidade de vida dos moçambicanos. Esta dissertação tem dois objectivos principais. O primeiro é que seja usada em aulas de empreendedorismo social, inovação social e estratégia. O segundo é compreender o verdadeiro potencial do modelo de negócio da Mozambikes e concluir se este é ou não sustentável no longo prazo. Para desenvolver o Estudo de Caos, a autora fez pessoalmente trabalho e pesquisa de campo. Durante um mês foram feitas entrevistas aos fundadores da Mozambikes, acompanhadas de visitas aos escritórios e oficina de montagem da empresa, de forma a melhor compreender o modelo de negócio. Parte da pesquisa, incluindo as teorias exploradas na Revisão de Literatura, foi realizada em Lisboa, Portugal. Podemos concluir que a Mozambikes tem um potencial real para se tornar uma empresa social sustentável no longo prazo e, ao mesmo tempo, ter um impacto na vida dos moçambicanos. Para que isto aconteça, a empresa deverá expandir o seu portefólio de produtos mantendo, ao mesmo tempo, uma boa proposta de valor para as empresas. Simultaneamente, deverá focar-se em parcerias-chave de forma a expandir e incentivar o uso de bicicletas no país, aumentando assim o nível de vendas a individuais no país