Proton Form Factor Puzzle and the CEBAF Large Acceptance Spectrometer(CLAS) Two-Photon Exchange Experiment

The electromagnetic form factors are the most fundamental observables that encode information about the internal structure of the nucleon. The electric ($G_{E}$) and the magnetic ($G_{M}$) form factors contain information about the spatial distribution of the charge and magnetization inside the nucleon. A significant discrepancy exists between the Rosenbluth and the polarization transfer measurements of the electromagnetic form factors of the proton. One possible explanation for the discrepancy is the contributions of two-photon exchange (TPE) effects. Theoretical calculations estimating the magnitude of the TPE effect are highly model dependent, and limited experimental evidence for such effects exists. Experimentally, the TPE effect can be measured by comparing the ratio of positron-proton elastic scattering cross section to that of the electron-proton $\large(R = \frac{\sigma (e^{+}p)}{\sigma (e^{-}p)}\large)$. The ratio $R$ was measured over a wide range of kinematics, utilizing a 5.6 GeV primary electron beam produced by the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab. This dissertation explored dependence of $R$ on kinematic variables such as squared four-momentum transfer ($Q^{2}$) and the virtual photon polarization parameter ($\varepsilon$). A mixed electron-positron beam was produced from the primary electron beam in experimental Hall B. The mixed beam was scattered from a liquid hydrogen (LH$_{2}$) target. Both the scattered lepton and the recoil proton were detected by the CEBAF Large Acceptance Spectrometer (CLAS). The elastic events were then identified by using elastic scattering kinematics. This work extracted the $Q^{2}$ dependence of $R$ at high $\varepsilon$ ($\varepsilon > $ 0.8) and the $\varepsilon$ dependence of $R$ at $\langle Q^{2} \rangle \approx 0.85$ GeV$^{2}$. In these kinematics, our data confirm the validity of the hadronic calculations of the TPE effect by Blunden, Melnitchouk, and Tjon. This hadronic TPE effect, with additional corrections contributed by higher excitations of the intermediate state nucleon, largely reconciles the Rosenbluth and the polarization transfer measurements of the electromagnetic form factors.

VALORACIÓN ECONÓMICA DE LOS RECURSOS HÍDRICOS EN LAS CUENCAS DE LOS RÍOS BANANO Y BANANITO

Entre los meses de marzo y setiembre del 2004, el Centro Internacional en Política Económica para el Desarrollo Sostenible de la Universidad Nacional (CINPE-UNA) elaboró el estudio Valoración económica de los recursos hI’dricos en las cuencas de los rfos Banano y Bananito3 . El objetivo general de éste responde a “estimar el valor del recurso hídrico en las cuencas de los ríos Banano y Bananito, en función de los usos prioritarios, para la recomendación de mecanismos efectivos para la sostenibilidad de un sistema de compensación por los servicios hidrológicos”. Para cumplir con este objetivo se plantean los siguientes objetivos específicos: (1) identificar el método de valoración económica para el recurso hídrico más apropiado dadas las condiciones de la zona, (2) cuantificar los servicios hidrológicos en las cuencas de los ríos Banano y Bananito en función de los principales usos, y (3) recomendar un mecanismo de pago voluntario por el servicio ambiental hídrico, basado en los resultados del estudio, que provea al Área de Conservación La Amistad Caribe (ACLA-C) los elementos para el desarrollo de una experiencia concreta.Producto de una exhaustiva revisión bibliográfica y dados los objetivos del estudio se seleccionó el Análisis de Múltiples Criterios (AMC), como la metodología marco para la valoración económica. Esto implica la aplicación de un método no tradicional, que permite combinar variables cuantitativas y cualitativas. A este respecto, el uso de una metodología participativa y multisectorial hizo posible la participación de los principales grupos de actores usuarios del agua. que se clasificaron en cinco grupos: (1) Asociaciones Administradoras de Acueductos Rurales (ASADAS) y acueductos rurales, (2) ONG’s y organizaciones comunales, (3) sociedad civil, (4) empresa privada y (5) sector público.Luego de sistematizar la información recabada durante las 23 sesiones de consulta participativa. se procede al análisis de los datos, que sirven de insumos para realizar la valoración económica y, finalmente, el diseño de la propuesta de mecanismos de cobro por grupo de usuarios para el pago por servicios ambientales. Los resultados finales se presentan mediante el uso de matrices y gráficos de telaraña.Este informe presenta los avances correspondientes al primer objetivo específico. Asimismo, incluye los comentarios y las sugerencias realizadas durante y posterior al taller de discusión con representantes de PROARCA-APM, TNC y ACLA-C. El documento contiene la caracterización económica y social del área en estudio, una revisión de estudios de valoración, y métodos, así como el método de valoración seleccionado y su forma de aplicación.A bstract:Between March and September 2004, the International Center of Economic Policy for Sustainable Development of the National University (CINPE.IJNA) elaborated the study Economic Valuation of ihe Water Resources in ihe Basins of ihe rivers Banano and Bananito4. The general objcctive of it answers to “estimate the value of the water resource in the basin of the rivers Banano and Bananito, depending on the prior uses, for the recommendation of effective mechanisms for the sustainability of a system of compensation for the hydrological serv ices”.The following specific objectives appear to reach the general objective: (1) To identify the most appropriate method of economic valuation for water resource given (he conditions of the zone. (2) To quantify the hydrological services in the basins of the rivers Banano and Bananito depending on (he principal uses. And (3) to recommend a mechanism of voluntary payment for the environmental water service based on the results of the study, which provides to La Amistad Caribe Conservation Area (ACLA-C), the elements for the development of a concrete experience.Product and given of an exhaustive bibliographical review, the Analysis of Multiple Criteria (AMC) is selected as (he methodology for the economic valuation. It implies (he application of a not traditional method, which allows combining quantitative and qualitative variables. In this regard, the use of a participatory methodoiogy there made possible the participation of the principal groups of actors users of the water, who quatified ¡n five groups to knowing, (1) administrative associations of rural aqueducts (ASADAS), (2) ONG and communal organizations, (3) civil society, (4) private sector and (5) public sector.After systematizing the information obtained during 23 meetings of participatory consultation. one proceeds to the analysis of the information, which use as ¡nputs to realize the economic valuation. Finally, the design of the offer of collection mechanisms for user group for the payment for environmental services is presented. The final results appear by means of the use of counterfoils and spider web graphs.This repon includes the commentaries and suggestions realized during and later to ihe workshop of discussion with representatives of PROARCA-APM, TNC and ACLA-C. The document also contains the economic and social characterization of the area under study, a review of studies of valuation, and methods. as well as the method of valuation selected and its form of application.

Modelling the infrastructure of the “Śivadharma Database”

A Digital Scholarly Edition is a conceptually and structurally sophisticated entity. Throughout the centuries, diverse methodologies have been employed to reconstruct a text transmitted through one or multiple sources, resulting in various edition types. With the advent of digital technology in philology, these practices have undergone a significant transformation, compelling scholars to reconsider their approach in light of the web. In the digital age, philologists are expected to possess (too) advanced technical skills to prepare interactive and enriched editions, even though, in most cases, only mechanical or documentary editions are published online. The Śivadharma Database is a web Content Management System (CMS) designed to facilitate the preparation, publication, and updating of Digital Scholarly Editions. By providing scholars with a user-friendly CRUD web application to reconstruct and annotate a text, they can prepare their textus with additional components such as apparatus, notes, translations, citations, and parallels. It is possible by leveraging an annotation system based on HTML and graph data structure. This choice is made because the text entity is multidimensional and multifaceted, even if its sequential presentation constrains it. In particular, editions of South Asian texts of the Śivadharma corpus, the case study of this research, contain a series of phenomena that are difficult to manage formally, such as overlapping hierarchies. Hence, it becomes necessary to establish the data structure best suited to represent this complexity. In Śivadharma Database, the textus is an HTML file readily displayable. Textual fragments, annotated via an interface without requiring philologists to write code and saved in the backend, form the atomic unit of multiple relationships organised in a graph database. This approach enables the formal representation of complex and overlapping textual phenomena, allowing for good annotation expressiveness with minimal effort to learn the relevant technologies during the editing workflow.

AlmaBike: una piattaforma web per aggregare e visualizzare dati sull'inquinamento da sensori IoT

L'inquinamento è un pensiero costante nel ventunesimo secolo. Ogni anno, i ricercatori cercano di trovare nuove metodologie e tecnologie per controllarlo e ridurlo. Per questo motivo l’Università di Bologna ha avviato svariati progetti per contrastare le problematiche ambientali. Una delle iniziative è AlmaBike. Sono biciclette che vengono assegnate nella forma di comodato gratuito al personale universitario e agli studenti. Nell'ultimo periodo, 50 AlmaBike sono state dotate di un pacchetto sensori in grado di rilevare posizione GPS, la qualità dell’aria, il rumore e alcuni parametri ambientali. Gli obiettivi perseguiti sono: sperimentare un sistema che permetta la misurazione di dati in merito alla qualità ambientale del comune di Bologna e misurare la rilevanza della consapevolezza della qualità dell’aria nella scelta di percorsi da parte di un utente, ad esempio casa-lavoro. L’obiettivo di questa tesi è quello di creare un applicativo che permetta la fruizione dei dati raccolti dai vari sensori attraverso l’uso di tecniche di Data Visualization. I dati vengono elaborati e organizzati con lo scopo di permetterne la comprensione anche ad utenti inesperti. La tesi è suddivisa in tre capitoli: nel primo capitolo sono stati approfonditi i concetti inerenti alla sostenibilità riprendendo quanto detto a proposito degli obiettivi dell'Agenda 2030, facendo anche una breve introduzione sul concetto di IoT e sensori; nel secondo capitolo vengono presentate le tecnologie utilizzate per la realizzazione dell’applicativo tra cui: Docker, MySQL, Angular, Typescript, Golang; nel terzo capitolo viene mostrata nel dettaglio l'applicazione creata: dalle scelte progettuali, fino ad arrivare al risultato finale.

PENCALC: a program for penetrance estimation in autosomal dominant diseases

We present a computer program developed for estimating penetrance rates in autosomal dominant diseases by means of family kinship and phenotype information contained within the pedigrees. The program also determines the exact 95% credibility interval for the penetrance estimate. Both executable (PenCalc for Windows) and web versions (PenCalcWeb) of the software are available. The web version enables further calculations, such as heterozygosity probabilities and assessment of offspring risks for all individuals in the pedigrees. Both programs can be accessed and down-loaded freely at the home-page address http://www.ib.usp.br/~otto/software.htm.

An RFID Bulk Cargo Supervising System

In this work, a system using active RFID tags to supervise truck bulk cargo is described. The tags are attached to the bodies of the trucks and readers are distributed in the cargo buildings and attached to weighs and the discharge platforms. PDAs with camera and support to a WiFi network are provided to the inspectors and access points are installed throughout the discharge area to allow effective confirmations of unload actions and the acquisition of pictures for future audit. Broadband radio equipments are used to establish efficient communication links between the weighs and cargo buildings which are usually located very far from each other in the field. A web application software was especially developed to enable robust communication between the equipments for efficient device management, data processing and reports generation to the operating personal. The system was deployed in a cargo station of a Brazilian seashore port. The obtained results prove the effectiveness of the proposed system.

An approach for graphical user interface bad smells detection

In the context of an e ort to develop methodologies to support the evaluation of interactive system, this paper investigates an approach to detect graphical user interface bad smells. Our approach consists in detecting user interface bad smells through model-based reverse engineering from source code. Models are used to de ne which widgets are present in the interface, when can particular graphical user interface (GUI) events occur, under which conditions, which system actions are executed, and which GUI state is generated next.

Extensão da divulgação voluntária do capital intelectual nos grupos bancários

Com o presente estudo procuramos analisar a extensão da divulgação voluntária do capital intelectual nos relatórios anuais e nas páginas Web dos grupos bancários em Portugal. Os resultados revelaram que os grupos bancários divulgam em média 0,5335 de informação do capital intelectual nos relatórios anuais e 0,3493 nas suas páginas Web. O componente mais divulgado, tanto nos relatórios anuais como nas páginas Web, é o capital relacional, seguido do capital estrutural e do capital humano. Os grupos bancários em Portugal atribuem maior importância à divulgação de informação do capital negócio nos relatórios anuais e do capital sociedade nas páginas Web.

Utilização do método Multicritério AHP, na aquisição de um sistema ERP

The selection of an Enterprise Resource Planning (ERP) system is one of the most sensitive and highest impact processes in the area of information systems and technologies, because it supports and integrates the whole business of an organization. Hence the importance of deciding the best solution in order to contribute to the organization's competitiveness in a global and increasingly demanding market. Therefore, it is essential to provide tools to support decision making, turning complex and often intangible decisions into simple and quantifiable scenarios. This study addressed the adoption of the Analytical Hierarchy Process (AHP) multicriteria decision method to support the selection of an ERP system. The literature review was the source used to obtain the set of the most relevant criteria to be considered in this decision, which were subsequently validated through systematic application of various surveys of experts and people related to the field of ERP systems. To support the application of AHP, according to the model obtained in the study, it was developed a web application that will be available to the general public. The responsible for the acquisition of ERP systems can use it to easily apply the AHP method based on validated decision model. On the other hand, the web application can be used as a validation tool, allowing collecting data for future developments of the decision model.

A Travel Optimization System for Academic Environments

Carpooling initiated in America in the 1970s due to the oil crisis. However, over the past years, carpooling has increased significantly across the world. Some countries have created a High Occupancy Vehicle (HOV) lane to encourage commuters not to travel alone. In additional, carpool websites has been developed to facilitate the connection between the commuters, making it possible to create a compatible match in a faster and efficient manner. This project focuses on carpooling, especially in an academic environment since younger people are more likely to choose carpool. Initially, an intense research was made to examine carpool studies that occurred all over the world, following with a research of higher education institutes that use carpooling as a transportation mode. Most websites created carpools by targeting people from a specific country. These commuters have different origins and destinations making it more complicated to create compatible matches. The objective of this project is to develop a system helping teachers and students from an academic environment to create carpool matches. This objective makes it easier to create carpools because these students and teachers have the same destination. During the research, it was essential to explore, as many as possible, existing carpool websites that are available across the world. After this analysis, several sketches were made to develop the layout and structure of the web application that’s being implemented throughout the project. Once the layout was established, the development of the web application was initiated. This project had its ups and downs but it accomplished all the necessary requirements. This project can be accessed on the link: http://ipcacarpool.somee.com. Once the website was up and running, a web-based survey was developed to study the reasons that motivate people to consider carpooling as an alternative to driving alone. To develop this survey was used a tool called Survey Planet. This survey contained 408 respondents, which 391 are students and 17 are teachers. This study concludes that a majority of the respondents don’t carpool, however they will consider carpooling if there was a dedicated parking space. A majority of the respondents that carpool initiated less than a year ago, indicating that this mean of transportation is recent.

PCMAT Metadata Authoring Tool

This paper introduces the PCMAT platform project and, in particular, one of its components, the PCMAT Metadata Authoring Tool. This is an educational web application that allows the project metadata creators to write the metadata associated to each learning object without any concern for the metadata schema semantics. Furthermore it permits the project managers to add or delete elements to the schema, without having to rewrite or compile any code.

Monitorização integrada para sistemas de alimentação distribuídos

Mestrado em Engenharia Electrotécnica e de Computadores

Plataforma de gestão de incidentes

Mestrado em Engenharia Electrotécnica e de Computadores. Área de Especialização de Telecomunicações.

GuideMe: service for consulting, publication and recommendation of touristic locations

Trabalho de Projeto realizado para obtenção do grau de Mestre em Engenharia Informática e de Computadores

Desenvolvimento de uma plataforma SIG para apoio ao controlo da segurança das grandes barragens portuguesas

Trabalho Final de Mestrado elaborado no Laboratório Nacional de Engenharia Civil (LNEC) para a obtenção do grau de Mestre em Engenharia Civil pelo Instituto Superior de Engenharia de Lisboa no âmbito do protocolo de cooperação entre o ISEL e o LNEC