Uso de herramientas digitales para formación de una comunidad de jugadores de fútbol no profesionales: motivadores e inhibidores

Este estudio busca profundizar en los motivadores e inhibidores hacia el uso de una herramienta digital dirigida a jugadores de fútbol no profesional, que permita formar una comunidad para la convocatoria de partidos de dicho deporte, reserva de canchas en línea y reconocimiento del talento de los jugadores -- Se identifica la aceptación de dicha herramienta digital por parte tanto de los jugadores no profesionales como de los negocios de alquiler de canchas sintéticas -- Se aborda el estado del uso de internet y de teléfonos inteligentes en el área metropolitana de Medellín, Colombia, como factores claves de éxito que facilitan la adopción de la herramienta digital evaluada -- Se acudió a la investigación cualitativa de fuentes primarias con entrevistas en profundidad y encuestas, así como a la indagación en fuentes secundarias de la literatura relacionada con la situación en estudio -- El proyecto tuvo la finalidad de determinar si la herramienta digital sería aceptada o no y cuáles serían los contenidos e interacciones deseados por los posibles usuarios

Dinámica de los predictores de adopción de Internet en Medellín

En este trabajo se propone analizar la dinámica del impacto asociado a algunos predictores de la adopción de internet en la ciudad de Medellín (Colombia), utilizando como base de datos la Encuesta de calidad de vida de Medellín (ECV) desde el año 2006 a 2014 -- Se analizarán que variables inciden en la tenencia de internet, se realizará la estadística descriptiva necesaria, y regresiones mediante los modelos Logit y Probit -- El acceso a internet aún se encuentra reservado para una parte privilegiada de la población que cuenta con suficiente ingreso para tener servicio en casa y computador -- Se evidenció igualmente que en la ciudad no hay presencia de brecha de género contrario a lo encontrado en la literatura

Disposición al uso de sitios web de un grupo de organizaciones no gubernamentales (ONG) de Medellín

En la actualidad, en Colombia el uso de los sitios web en las ONG no se ha generalizado y analizar las razones de ello puede llevar a establecer estrategias de orientación hacia su uso como herramienta de comunicación para sus labores -- El presente estudio se realizó para conocer la disposición de las organizaciones no gubernamentales (ONG) afiliadas a la Federación Antioqueña de ONG (FAONG) localizadas en la ciudad de Medellín hacia el uso de sitios web -- El interés central consistió en encontrar las ventajas y desventajas que las mismas encuentran acerca de la adopción de estar presentes en el canal en línea a través del uso de sitios web -- Para ello se partió de una revisión de antecedentes teóricos que exploran la adopción de herramientas digitales en diferentes empresas, definen las ventajas y desventajas de la presencia en línea y encuentran algunos motivadores e inhibidores y el nivel de conocimiento de las entidades en cuanto al uso de internet como canal de comunicación -- Para lograr el objetivo se hizo un estudio exploratorio en el que se aplicaron instrumentos, como entrevistas y encuestas, a un grupo de informantes seleccionados de ONG afiliadas a la FAONG -- Los hallazgos mostraron el interés de las organizaciones de tener un sitio web para comunicar e informar sobre su objeto social y determinar hacia cuál población están enfocadas; también se encontraron falencias en cuanto al conocimiento, el uso y la comunicación con sus públicos frente al manejo adecuado de un sitio web

Câmara dos Deputados : democracia e igualdade de oportunidades entre mulheres e homens?

Esta pesquisa analisou as oportunidades das mulheres em termos de igualdade na ocupação de cargos de alta chefia na Câmara dos Deputados. A pesquisa de campo foi realizada entre novembro de 2005 e janeiro de 2006 e a amostra abrangeu 1.320 participantes. A Escala de Percepção de Igualdade de Oportunidades entre Mulheres e Homens foi aplicada para analisar a atitude dos servidores quanto a possibilidades e limites de ascensão da mulher na estrutura de cargos da organização. A escala constava de 34 itens, com respostas tipo Likert, e 6 itens sobre dados demográficos. A coleta de dados foi feita pela rede interna de computadores da Câmara dos Deputados, através de e-mail enviado aos 3.597 servidores do quadro efetivo. Os dados foram submetidos à análise dos componentes principais (ACP), rotação promax, com resultados meritórios (KMO = 86,0; Bartlett: 14894,879), para 4 fatores. Observaram-se diferenças entre mulheres e homens quanto aos escores obtidos. As oportunidades de ocupar cargo de alta chefia são menores para elas do que para eles. Há mais gerentes do sexo masculino, e os servidores, especialmente as mulheres que não ocupam posto de chefia, percebem que não há igualdade de oportunidades entre funcionários de ambos os sexos. ___________________________________________________________________________ ABSTRACT

Photovoltaic power forecast modeling with artificial neural networks

Dissertação de Mestrado, Engenharia Eletrónica e Telecomunicações, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2016

Implementação de um Módulo de Supervisão para um Sistema de Detecção de Vazamentos em Dutos de Petróleo

The transport of fluids through pipes is used in the oil industry, being the pipelines an important link in the logistics flow of fluids. However, the pipelines suffer deterioration in their walls caused by several factors which may cause loss of fluids to the environment, justifying the investment in techniques and methods of leak detection to minimize fluid loss and environmental damage. This work presents the development of a supervisory module in order to inform to the operator the leakage in the pipeline monitored in the shortest time possible, in order that the operator log procedure that entails the end of the leak. This module is a component of a system designed to detect leaks in oil pipelines using sonic technology, wavelets and neural networks. The plant used in the development and testing of the module presented here was the system of tanks of LAMP, and its LAN, as monitoring network. The proposal consists of, basically, two stages. Initially, assess the performance of the communication infrastructure of the supervisory module. Later, simulate leaks so that the DSP sends information to the supervisory performs the calculation of the location of leaks and indicate to which sensor the leak is closer, and using the system of tanks of LAMP, capture the pressure in the pipeline monitored by piezoresistive sensors, this information being processed by the DSP and sent to the supervisory to be presented to the user in real time

Traffic Light Using Multiple Wireless Technologies

This paper presents the study and experimental tests for the viability analysis of using multiple wireless technologies in urban traffic light controllers in a Smart City environment. Communication drivers, different types of antennas, data acquisition methods and data processing for monitoring the network are presented. The sensors and actuators modules are connected in a local area network through two distinct low power wireless networks using both 868 MHz and 2.4 GHz frequency bands. All data communications using 868 MHz go through a Moteino. Various tests are made to assess the most advantageous features of each communication type. The experimental results show better range for 868 MHz solutions, whereas the 2.4 GHz presents the advantage of self-regenerating the network and mesh. The different pros and cons of both communication methods are presented.

Pacote de sincronização de réplicas de bases de dados

A replicação de base de dados tem como objectivo a cópia de dados entre bases de dados distribuídas numa rede de computadores. A replicação de dados é importante em várias situações, desde a realização de cópias de segurança da informação, ao balanceamento de carga, à distribuição da informação por vários locais, até à integração de sistemas heterogéneos. A replicação possibilita uma diminuição do tráfego de rede, pois os dados ficam disponíveis localmente possibilitando também o seu acesso no caso de indisponibilidade da rede. Esta dissertação baseia-se na realização de um trabalho que consistiu no desenvolvimento de uma aplicação genérica para a replicação de bases de dados a disponibilizar como open source software. A aplicação desenvolvida possibilita a integração de dados entre vários sistemas, com foco na integração de dados heterogéneos, na fragmentação de dados e também na possibilidade de adaptação a várias situações. ABSTRACT: Data replication is a mechanism to synchronize and integrate data between distributed databases over a computer network. Data replication is an important tool in several situations, such as the creation of backup systems, load balancing between various nodes, distribution of information between various locations, integration of heterogeneous systems. Replication enables a reduction in network traffic, because data remains available locally even in the event of a temporary network failure. This thesis is based on the work carried out to develop an application for database replication to be made accessible as open source software. The application that was built allows for data integration between various systems, with particular focus on, amongst others, the integration of heterogeneous data, the fragmentation of data, replication in cascade, data format changes between replicas, master/slave and multi master synchronization.

First steps in underwater photogrammetry with the support of an unmanned underwater vehicle

The evolution of modern and increasingly sensitive image sensors, the increasingly compact design of the cameras, and the recent emergence of low-cost cameras allowed the Underwater Photogrammetry to become an infallible and irreplaceable technique used to estimate the structure of the seabed with high accuracy. Within this context, the main topic of this work is the Underwater Photogrammetry from a geomatic point of view and all the issues associated with its implementation, in particular with the support of Unmanned Underwater Vehicles. Questions such as: how does the technique work, what is needed to deal with a proper survey, what tools are available to apply this technique, and how to resolve uncertainties in measurement will be the subject of this thesis. The study conducted can be divided into two major parts: one devoted to several ad-hoc surveys and tests, thus a practical part, another supported by the bibliographical research. However the main contributions are related to the experimental section, in which two practical case studies are carried out in order to improve the quality of the underwater survey of some calibration platforms. The results obtained from these two experiments showed that, the refractive effects due to water and underwater housing can be compensated by the distortion coefficients in the camera model, but if the aim is to achieve high accuracy then a model that takes into account the configuration of the underwater housing, based on ray tracing, must also be coupled. The major contributions that this work brought are: an overview of the practical issues when performing surveys exploiting an UUV prototype, a method to reach a reliable accuracy in the 3D reconstructions without the use of an underwater local geodetic network, a guide for who addresses underwater photogrammetry topics for the first time, and the use of open-source environments.

Optimal network topologies for local search with congestion

The problem of searchability in decentralized complex networks is of great importance in computer science, economy, and sociology. We present a formalism that is able to cope simultaneously with the problem of search and the congestion effects that arise when parallel searches are performed, and we obtain expressions for the average search cost both in the presence and the absence of congestion. This formalism is used to obtain optimal network structures for a system using a local search algorithm. It is found that only two classes of networks can be optimal: starlike configurations, when the number of parallel searches is small, and homogeneous-isotropic configurations, when it is large.

Impact of local library systems on the national networking environment : proceedings of the Library of Congress Network Advisory Committee Meeting, April 1-3, 1991.

Includes bibliographical references.

The effects of physiologically plausible connectivity structure on local and global dynamics in large scale brain models.

Functionally relevant large scale brain dynamics operates within the framework imposed by anatomical connectivity and time delays due to finite transmission speeds. To gain insight on the reliability and comparability of large scale brain network simulations, we investigate the effects of variations in the anatomical connectivity. Two different sets of detailed global connectivity structures are explored, the first extracted from the CoCoMac database and rescaled to the spatial extent of the human brain, the second derived from white-matter tractography applied to diffusion spectrum imaging (DSI) for a human subject. We use the combination of graph theoretical measures of the connection matrices and numerical simulations to explicate the importance of both connectivity strength and delays in shaping dynamic behaviour. Our results demonstrate that the brain dynamics derived from the CoCoMac database are more complex and biologically more realistic than the one based on the DSI database. We propose that the reason for this difference is the absence of directed weights in the DSI connectivity matrix.

Computer-assisted cartography using topographic properties: precision and accuracy of local soil maps in central Mexico

Map units directly related to properties of soil-landscape are generated by local soil classes. Therefore to take into consideration the knowledge of farmers is essential to automate the procedure. The aim of this study was to map local soil classes by computer-assisted cartography (CAC), using several combinations of topographic properties produced by GIS (digital elevation model, aspect, slope, and profile curvature). A decision tree was used to find the number of topographic properties required for digital cartography of the local soil classes. The maps produced were evaluated based on the attributes of map quality defined as precision and accuracy of the CAC-based maps. The evaluation was carried out in Central Mexico using three maps of local soil classes with contrasting landscape and climatic conditions (desert, temperate, and tropical). In the three areas the precision (56 %) of the CAC maps based on elevation as topographical feature was higher than when based on slope, aspect and profile curvature. The accuracy of the maps (boundary locations) was however low (33 %), in other words, further research is required to improve this indicator.

Transparent and secure remote network storage system using an untrusted server

Työssä kehitettin läpinäkyvä Internet Small Computer Systems Interface-verkkolevyä (iSCSI) käyttävä varmistusjärjestelmä. Verkkolevyn sisältö suojattiin asiakaspään salauskerroksella (dm-crypt). Järjestely mahdollisti sen, että verkkolevylle tallennetut varmuuskopiot pysyivät luottamuksellisina, vaikka levypalvelinta tarjoava taho oli joko epäluotettava tai suorastaan vihamielinen. Järjestelmän hyötykäyttöä varten kehitettiin helppokäyttöinen prototyyppisovellus. Järjestelmän riskit ja haavoittuvuudet käytiin läpi ja analysoitiin. Järjestelmälle tehtiin myös karkea kryptoanalyysi sen teknistenominaisuuksien pohjalta. Suorituskykymittaukset tehtiin sekä salatulle että salaamattomalle iSCSI-liikenteelle. Näistä todettiin, että salauksen vaikutus suorituskykyyn oli häviävän pieni jopa 100 megabittiä sekunnissa siirtävillä verkkonopeuksilla. Lisäksi pohdittiin teknologian muita sovelluskohteita ja tulevia tutkimusalueita.

Local Services in a Fourth Generation Mobile Network

Neljännen sukupolven mobiiliverkot kokoaa kaikki tietoliikenneverkot ja palvelut Internetin ympärille. Tämä mullistus muuttaa vanhat vertikaaliset tietoliikenneverkot joissa yhden tietoliikenneverkon palvelut ovat saatavissa vain kyseisen verkon päätelaitteille horisontaaliseksi malliksi jossa päätelaitteet käyttävät omaa verkkoansa pääsynä Internetin palveluihin. Tämä diplomityö esittelee idean paikallisista palveluista neljännen sukupolven mobiiliverkossa. Neljännen sukupolven mobiiliverkko yhdistää perinteiset televerkkojen palvelut ja Internet palvelut sekä mahdollistaa uuden tyyppisten palveluiden luonnin. TCP/IP protokollien ja Internetin evoluutio on esitelty. Laajakaistaiset, lyhyen kantaman radiotekniikat joita käytetään langattomana yhteytenä Internetiin on käsitelty. Evoluutio kohti neljännen sukupolven mobiiliverkkoja on kuvattu esittelemällä vanhat, nykyiset ja tulevat mobiiliverkot sekä niiden palvelut. Ennustukset palveluiden ja markkinoiden tulevaisuuden kehityksestä on käsitelty. Neljännen sukupolven mobiiliverkon arkkitehtuuri mahdollistaa paikalliset palvelut jotka ovat saatavilla vain yhdessä paikallisessa 4G verkossa. Paikalliset palvelut voidaan muunnella jokaiselle käyttäjälle erikseen käyttäen profiili-informaatiota ja paikkatietoa. Työssä on pohdittu paikallisten palveluiden käyttökelpoisuutta ja mahdollisuuksia käyttäen Lappeenrannan teknillisen korkeakoulun 4G projektin palvelupilotin tuloksia.