Uso do QR no marketing digital: a perspetiva do utilizador português

Dissertação de Mestrado apresentada ao Instituto de Contabilidade e Administração do Porto para a obtenção do grau de Mestre em Marketing Digital, sob orientação de Doutor José Freitas Santos

Digital microfluidics on paper

This thesis is one of the first reports of digital microfluidics on paper and the first in which the chip’s circuit was screen printed unto the paper. The use of the screen printing technique, being a low cost and fast method for electrodes deposition, makes the all chip processing much more aligned with the low cost choice of paper as a substrate. Functioning chips were developed that were capable of working at as low as 50 V, performing all the digital microfluidics operations: movement, dispensing, merging and splitting of the droplets. Silver ink electrodes were screen printed unto paper substrates, covered by Parylene-C (through vapor deposition) as dielectric and Teflon AF 1600 (through spin coating) as hydrophobic layer. The morphology of different paper substrates, silver inks (with different annealing conditions) and Parylene deposition conditions were studied by optical microscopy, AFM, SEM and 3D profilometry. Resolution tests for the printing process and electrical characterization of the silver electrodes were also made. As a showcase of the applications potential of these chips as a biosensing device, a colorimetric peroxidase detection test was successfully done on chip, using 200 nL to 350 nL droplets dispensed from 1 μL drops.

Examination of Heterogeneous Crossing Sequences Between Toner and Rollerball Pen Strokes by Digital Microscopy and 3-D Laser Profilometry

The determination of line crossing sequences between rollerball pens and laser printers presents difficulties that may not be overcome using traditional techniques. This research aimed to study the potential of digital microscopy and 3-D laser profilometry to determine line crossing sequences between a toner and an aqueous ink line. Different paper types, rollerball pens, and writing pressure were tested. Correct opinions of the sequence were given for all case scenarios, using both techniques. When the toner was printed before the ink, a light reflection was observed in all crossing specimens, while this was never observed in the other sequence types. The 3-D laser profilometry, more time-consuming, presented the main advantage of providing quantitative results. The findings confirm the potential of the 3-D laser profilometry and demonstrate the efficiency of digital microscopy as a new technique for determining the sequence of line crossings involving rollerball pen ink and toner. With the mass marketing of laser printers and the popularity of rollerball pens, the determination of line crossing sequences between such instruments is encountered by forensic document examiners. This type of crossing presents difficulties with optical microscopic line crossing techniques involving ballpoint pens or gel pens and toner (1-4). Indeed, the rollerball's aqueous ink penetrates through the toner and is absorbed by the fibers of the paper, leaving the examiner with the impression that the toner is above the ink even when it is not (5). Novotny and Westwood (3) investigated the possibility of determining aqueous ink and toner crossing sequences by microscopic observation of the intersection before and after toner removal. A major disadvantage of their study resides in destruction of the sample by scraping off the toner line to see what was underneath. The aim of this research was to investigate the ways to overcome these difficulties through digital microscopy and three-dimensional (3-D) laser profilometry. The former was used as a technique for the determination of sequences between gel pen and toner printing strokes, but provided less conclusive results than that of an optical stereomicroscope (4). 3-D laser profilometry, which allows one to observe and measure the topography of a surface, has been the subject of a number of recent studies in this area. Berx and De Kinder (6) and Schirripa Spagnolo (7,8) have tested the application of laser profilometry to determine the sequence of intersections of several lines. The results obtained in these studies overcome disadvantages of other methods applied in this area, such as scanning electron microscope or the atomic force microscope. The main advantages of 3-D laser profilometry include the ease of implementation of the technique and its nondestructive nature, which does not require sample preparation (8-10). Moreover, the technique is reproducible and presents a high degree of freedom in the vertical axes (up to 1000 μm). However, when the paper surface presents a given roughness, if the pen impressions alter the paper with a depth similar to the roughness of medium, the results are not always conclusive (8). It becomes difficult in this case to distinguish which characteristics can be imputed to the pen impressions or the quality of the paper surface. This important limitation is assessed by testing different types of paper of variable quality (of different grammage and finishing) and the writing pressure. The authors will therefore assess the limits of 3-D laser profilometry technique and determine whether the method can overcome such constraints. Second, the authors will investigate the use of digital microscopy because it presents a number of advantages: it is efficient, user-friendly, and provides an objective evaluation and interpretation.

Hardcopy quality parameters to ensure structures detection at digital mammography

Objective To develop procedures to ensure consistency of printing quality of digital images, by means of hardcopy quantitative analysis based on a standard image. Materials and Methods Characteristics of mammography DI-ML and general purpose DI-HL films were studied through the QC-Test utilizing different processing techniques in a FujiFilm®-DryPix4000 printer. A software was developed for sensitometric evaluation, generating a digital image including a gray scale and a bar pattern to evaluate contrast and spatial resolution. Results Mammography films showed maximum optical density of 4.11 and general purpose films, 3.22. The digital image was developed with a 33-step wedge scale and a high-contrast bar pattern (1 to 30 lp/cm) for spatial resolution evaluation. Conclusion Mammographic films presented higher values for maximum optical density and contrast resolution as compared with general purpose films. The utilized digital processing technique could only change the image pixels matrix values and did not affect the printing standard. The proposed digital image standard allows greater control of the relationship between pixels values and optical density obtained in the analysis of films quality and printing systems.

Digital Output

Slides from Lecture on making PDF's - the de facto standard for printing and setting up your own publishing and distribution channel via a Blog!

Plan exportador software de encriptación y firma digital de documentos altamente sensibles

Este plan exportador proyectado a un plazo de 3 años, servirá a ITAC IT APPLICATIONS CONSULTING S.A. para direccionar sus actividades en el mercado internacional para los años 2009, 2010, 2011. La prioridad de los 2 primeros años será el mejoramiento interno de la empresa, que será la aplicación de estrategias en diferentes campos como: capital humano, capital intelectual, capital cultural, crecimiento económico, estrategia comercial en el área internacional, construcción de capital financiero para la generación de ingresos. Para tener participación en mercados internacionales, mostrar su potencial exportador y lograr las expectativas de crecimiento de las ventas independientes a las obtenidas en el marcado local; pretende empezar en el año 2009, en el mercado Peruano con exportaciones por $36.000 USD correspondiente a 30 unidades, aumentando a $ 72000 USD con 60 unidades en el 2010 y $ 108000 USD y 90 unidades en el 2011. El Servicio a exportar fue “SecureFile” a partir del cual se definieron factores de éxito como lo son las ventajas competitivas del producto en sí mismo enumeradas a continuación: 1) Precio muy competitivo en el mercado, 2) Automatización del proceso de intercambio de información, 3) Software basado en estándares, 4) Se ejecuta en cualquier sistema operativo. A su vez se realizaron consultorías donde se diagnosticó todas las áreas de la empresa arrojando algunos resultados: La estructura organizacional esta bien definida, pero por su crecimiento y necesidad de incluir nuevo personal, no hay claridad en las funciones dentro del organigrama y depende totalmente de la dirección general. Por esto la gerencia debe estructurar mejor los departamentos comerciales creando nuevos cargos de acuerdo al proceso de internacionalización. Las políticas de personal se trabajan de manera informal con criterios validos para promover trabajadores (mérito, antigüedad, etc.), se realizan actualizaciones Tecnológicas mensuales, reconocimiento y participación en la empresa a sus funcionarios, excelentes relaciones personales que permiten hacer evaluaciones de desempeño acorde a las metas, gran variedad de motivación y responsabilidad social encaminada a los niños de bajos recursos. Aunque se debe crear un área de gestión humana y definir la frecuencia de las capacitaciones. Los ingresos son provenientes de la prestación de servicios de IT con incrementando de 256% durante los tres años anteriores para obtener $ 2`032.784.683 millones de pesos en el 2007. El nivel de endeudamiento también ha ido en aumento, por la necesidad de capacidad instalada, contrataciones de personal, el cumplimiento de requisitos del mercado y la necesidad generar buena imagen crediticia con entidades financieras. Cuenta con un musculo financiero para respaldar sus obligaciones inmediatas con $4,42 por $1 comprometido en el 2007 a pesar de ser el año con mayor nivel de endeudamiento arrojando pasivos corrientes por $127.715.281,37. Los cuatro socios cuentan con un comportamiento de 164,67% (2006) y 132,97% (2007) de rendimiento de sobre la inversión antes de impuestos. Para este año más del 95% de su información financiera y contable se maneja de manera sistematizada. El área Financiera de la empresa no es la más débil, pero no existe un departamento financiero con un solo responsable a la cabeza, por esto deben destinar un área separada de la administrativa con un asesor financiero que tenga disponibilidad de 100%. En el caso particular del proyecto de exportación los costos de producción se centran en SecureFile versión 3.0 que no representa costos marginales, ya que la replica de este software puede hacerse cuantas veces sea requerido sin afectar en ninguna proporción los costos. La empresa no utiliza un método formal para calcular sus costos de operación y desarrollo de programas. Pero ha desarrollado un sistema de evaluación de costos en tablas de Excel que de manera organizada logran un costeo acorde a sus necesidades específicas. Para la selección de los países: objetivo, alterno y contingente; se realizó una matriz de Selección de 6 países basados en la exigencia gubernamental en términos de seguridad de la información vía internet, y la percepción de los empresarios, competencia y otros factores económicos; arrojando como resultado a Perú, Costa Rica y México.

Ink-Jet Printing of Color Optical Filters for LCD Applications

At the age of multi-media, portable electronic devices such as mobile phones, personal digital assistant and handheld gaming systems have increased the demand for high performance displays with low cost production. Inkjet printing color optical filters (COF) for LCD applications seem to be an interesting alternative to decrease the production costs. The advantage of inkjet printing technology is to be fast, accurate, easy to run and cheaper than other technologies. In this master thesis work, we used various disciplines such as optical microscopy, rheology, inkjet printing, profilometering and colorimetry. The specific aim of the thesis was to investigate the feasibility of using company-A pigment formulation in inkjet production of COF for active matrix LCD applications. Ideal viscosity parameters were determined from 10 to 20mPa·s for easy inkjet printing at room temperature. The red pigments used are fully dispersed into the solvent and present an excellent homogenous repartition after printing. Thickness investigations revealed that the printed COF were equal or slightly thicker than typically manufactured ones. The colorimetry investigations demonstrated color coordinates very close to the NTSC red standard. LED backlighting seems to be a valuable solution to combine with the printed COF regarding to the spectrum and color analysis. The results on this thesis will increase the understanding of inkjet printing company-A pigments to produce COF for LCD applications.

Rock Hill Printing and Finishing Company History - Accession 207 - M91 (177)

This collection consists of a special edition of The Evening Herald (Rock Hill, SC newspaper) which included a section devoted to the history of the company.

Digital library of historical cartography: open access to cultural heritage and public good

This paper describes the integration of information between Digital Library of Historical Cartography and Bibliographical Database (DEDALUS), both of the University of São Paulo (USP), to guarantee open, public access by Internet to the maps in the collection and make them available to users everywhere. This digital library was designed by Historical Cartography Studies Laboratory team (LECH/USP), and provides maps images on the Web, of high resolution, as well as such information on these maps as technical-scientific data (projection, scale, coordinates), printing techniques and material support that have made their circulation and cultural consumption possible. The Digital Library of Historical Cartography is accessible not only to the historical cartography researchers, but also to students and the general public. Beyond being a source of information about maps, the Digital Library of Historical Cartography seeks to be interactive, exchanging information and seeking dialogue with different branches of knowledge

Pattern-based segmentation of digital documents: model and implementation

This thesis proposes a new document model, according to which any document can be segmented in some independent components and transformed in a pattern-based projection, that only uses a very small set of objects and composition rules. The point is that such a normalized document expresses the same fundamental information of the original one, in a simple, clear and unambiguous way. The central part of my work consists of discussing that model, investigating how a digital document can be segmented, and how a segmented version can be used to implement advanced tools of conversion. I present seven patterns which are versatile enough to capture the most relevant documents’ structures, and whose minimality and rigour make that implementation possible. The abstract model is then instantiated into an actual markup language, called IML. IML is a general and extensible language, which basically adopts an XHTML syntax, able to capture a posteriori the only content of a digital document. It is compared with other languages and proposals, in order to clarify its role and objectives. Finally, I present some systems built upon these ideas. These applications are evaluated in terms of users’ advantages, workflow improvements and impact over the overall quality of the output. In particular, they cover heterogeneous content management processes: from web editing to collaboration (IsaWiki and WikiFactory), from e-learning (IsaLearning) to professional printing (IsaPress).

Finnish Fighting Words: Printing the Työmies Translation Project

The Työmies translation project involves the translation of that newspaper’s accounts of significant events from Michigan’s 1913-1914 Copper Strike. Työmies was a Finnish-language newspaper, published in Hancock, Michigan, whose socialist-unionist perspective on the strike differed markedly from that of the local English-language newspapers. This project is the first time significant portions of Työmies have been translated into English. In June of 2013, the presenter printed the translation of the Työmies account of the strike’s first day on a hand-operated Chandler & Price platen press. Thus, the presentation describes this unique project: the translation itself, the presenter’s search for necessary type and equipment, and the printing of the broadsides. The presentation will include a history of Työmies and the Strike, with an emphasis on ways in which human culture and language is reflected in the material culture of printing.