In 1975, J.K. Hvistendahl and Mary R. Kahl tested 200 individuals to determine if readers preferred serif type for the body text of stories in newspapers. Subjects read stories set in serif and sans serif type. They were timed and asked for their preference as to which typeface they felt was more legible. The researchers found that test subjects preferred serif type the body text in their newsprint. After comparing the time it took subjects to read stories, researchers found readers needed less time to read stories set in serif type than sans serif.Almost 25 years later, another generation of readers has emerged, and Web pages are commonplace among many newspapers today. Yet nothing has been done to determine if these same findings are true for the World Wide Web. This study set out to do just that.Two hundred subjects were recruited for this study, each one placed into one of four groups: male student, male non-student, female student, and female non-student. Each subject was asked to read two 325-word stories, each on its own World Wide Web page. One story was set in a serif typeface, the other set in a sans serif typeface. Subjects were unobrusively timed with a stopwatch as they read each story. After reading the two stories, they were asked which typeface they felt was more legible, serif or sans serif.Overall, readers showd no statistically significant preference for serif or sans serif type in body text on the World Wide Web. The data was tested with ANOVA while frequencies and were also gathered. Only one statistically significant interaction surfaced which found that male students, who preferred sans serif type, took a statistically significant longer time to read online stories set in serif type. / Department of Journalism

Set against a background of technological change, national bargaining and union merger, this thesis considers the impact of a changing structural, economic and political climate on the resilience of national pay bargaining within general print, a little documented but important section of the economy. It seeks to examine contemporary workplace industrial relations where, against national trends, national bargaining has been resilient. It is in the light of there being a long association with strong, regulatory unionism within the sector that this study seeks to explore the reality of workplace industrial relations under national bargaining. There has been a wealth of theoretical and empirical data produced on the background to the wider debate on the declining influence of multi-employer bargaining across the UK economy. However, little work has been committed to the general printing sector that investigates why, in the face of fundamental changes to industrial relations practice, the national agreement for this sector appears to have continued relatively unscathed. The thesis draws on the experience of twelve branches with respect to the impact of the national agreement; three case studies in general print sector companies located in the South West, Humberside and Anglia regions; and on documentary evidence and participant observation. Analysis of the thesis was informed by classical and contemporary writers on industrial relations. The thesis finds a shift from traditional adversarial approaches to partnership in national agreement negotiations. The thesis reveals that at the workplace level, the chapel structure remains intact with its traditional, hierarchal structure and the accompanying issues of gender segregation and worker exclusion remaining firmly embedded within chapels. Behind this appearance of chapel strength an air of apathy and poor organisation impacts on union activity and local bargaining. The thesis concludes by critiquing shifts away from traditional bargaining and questions the state of workplace organisation with changes in union structure. Importantly, the thesis presents data on the state of collective bargaining in the sector, and in particular identifies a shift from the traditional adversarial approach to partnership in the national agreement; it also identifies the difference in the image and reality of workplace organisation in the sector where behind the appearance of chapel strength lies an air of apathy and poor organisation that ultimately impacts on chapel activity and local bargaining. Using Kelly’s model for union renewal the thesis assesses the level of union activity and considers the likelihood of increased union activity in the workplace in the general print sector.

We analyse the problem of creating didactic material for teaching and evaluating mathematics in the first year of a School of Architecture. By using visual programming, science professor used codes (formulae) to represent in a software their proposals, instead of drawing them themselves. Through this experience we create a database of codes with computational solutions that allows faculty to modify, reuse, visualise and print in the same platform that she students will use while developing their designs. In this way we aim to maximise the link between mathematics and design as fundamental base for the control of complex shapes.

SCALE UP! is an exploration in hand-printed surface patterns in relation to scale. The aim is to make hand-printed large-scale surface patterns, by challenging the limitations of the printing screen, the fabric width and the circle as a shape; with the circle as a pattern and structure to visualise it, by colours and bleed-through. The project is based in an interest in working large-scale, in the area of screen printing. We often see printed full-width fabrics where the repeat fills the whole width. However, a possibility to take it one step further and not be limited by the width of the fabric or the size of the printing screen was seen. Why be satisfied with the size of a full-width pattern and see the printing screen as a frame to keep within? The striving to challenge the size of the printing screen and the fabric width were the basis of the project. The result is one piece ~4,2 x 4,8 m big consisting of six hand-printed cloths.

The ease of manufacturing using additive manufacturing (3D-Printing) reduces the overall production cost compared with the traditional manufacturing techniques. Because of the benefits of 3D printing technologies, it is proposed to be used in manufacturing of different products. But there are some flaws that are causing significant effect on 3D printed models which degrades the quality of the product. Hence in order to handle these defects, different measurement techniques are needed to quantify the defects that are seen on the surface of 3D-printed models. In our study there are two experimental setups. Experimental setup one was made to find out the proper coating timing to enable measurement using two good samples without defects in different colors blue and red with same material. Different 2D and 3D parameters were used for the surface measurements are collected and noted for further research. The Defective samples are measured using the state of the art equipment at Halmstad University. Experimental setup two was made to prepare the defective samples and measure the samples. The results obtained assisted to quantify the surface defects seen in the samples. This thesis studies some of the different methods that can be implemented to measure the surface defects on the 3D printed models. A little study on the various defects formed on the 3D printed models and what are the causes for the defects on the products were performed. The results suggest different method for the defects to be measured in both industrial and home or small scale office applications.

Master of Science / Department of Biological & Agricultural Engineering / Mei He / Anemia affects about 25% of the world’s population and causes roughly 8% of all disability cases. The development of an affordable point-of-care (POC) device for detecting anemia could be a significant for individuals in underdeveloped countries trying to manage their anemia. The objective of this study was to design and fabricate a 3D printed, low cost microfluidic mixing chip that could be used for the diagnosis of anemia. Microfluidic mixing chips use capillary flow to move fluids without the aid of external power. With new developments in 3D printing technology, microfluidic devices can be fabricated quickly and inexpensively. This study designed and demonstrated a passive microfluidic mixing chip that used capillary force to mix blood and a hemoglobin detecting assay. A 3D computational fluid dynamic simulation model of the chip design showed 96% efficiency when mixing two fluids. The mixing chip was fabricated using a desktop 3D printer in one hour for less than $0.50. Blood samples used for the clinical validation were provided by The University of Kansas Medical Center Biospecimen Repository. During clinical validation, RGB (red, green, blue) values of the hemoglobin detection assay color change within the chip showed consistent and repeatable results, indicating the chip design works efficiently as a passive mixing device. The anemia detection assay tended to overestimate hemoglobin levels at lower values while underestimating them in higher values, showing the assay needs to go through more troubleshooting.

In today’s world regulations to reduce vehicle emissions are only gettingtougher, from said regulations the concept of a Selective Catalytic Reduction(SCR) unit was born, designed to provide a healthy dose of ammonia (NH3)to reduce the NOx compound into harmless components such as water andnitrogen. In this thesis novel approaches where investigated, by combiningthe fast physical absorption and desorption properties of a highly porous ma-terial such as zeolites with the high storage capacity of metal chlorides wecan potentially improve NH3 dosing in the low temperature operating range,such as when vehicles have just been turned on. Additive manufacturing pro-vides a faster and convenient processing route, that can cut down costs andallows for an inexpensive prototyping phase. With the aid of 3D printing weprepared a prototype cage-like shape using zeolite 13X with a combination ofPVP, binders and solvent,this structures would be used in conjunction withMgCl2, the latter would be enclosed the cage and so that their volume ex-pansion could be contained. This approach provides a low temperature rangefriendly solution for the release of NH3 in a SCR unit. The experimentationand characterization of the composites mixed by mechanical process showedgreat promise of what it can be achieved by incorporating zeolites and metalchlorides for ammonia storage and dosing. In the end a successful formulaand process to 3D print zeolite 13X using a PAM approach was deliveredthat showed similar results to untreated 13X.

A dissertation submitted to the Faculty of Arts, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Master of Arts May 2016 / The technology of 3-D Printing is afforded extensive coverage in the media. Discourses surrounding this technology are charged with ideas of revolutions in manufacturing, democratisation of technology, and the potential to change the face of consumption and production. This technology is being marketed to the consumer and hobbyist. The consumer-grade 3-D printer is a result of the labour of a loose-knit worldwide community of hobbyists known as the "Maker movement". This movement, a convergence of the traditional "Hacker" culture and Do It Yourself (DIY) is constructed around ideas of affective labour. That is, labour performed for the sole purpose of enjoyment of doing so, and for a sense of well-being and community. The explosion of "affordable" 3-D printing as a technology is a result of this affective labour, yet little mention is made of any forms of labour in popular media discourses surrounding this technology. In this paper I construct a history of the Maker movement while theorising the forms of labour inherent to this movement using the Autonomist Marxism of Michael Hardt and Antonio Negri as a framework. Then, working within the field of Cultural Studies, and drawing on Actor-Network Theory (ANT), I perform Multimodal Critical Discourse Analysis (MCDA) on a small sample of texts to illustrate the occlusion and obfuscation of labour within these discourses of the consumer 3-D printer

Tomando o design gráfico como eixo de observação, foram analisados os caminhos traçados na profissionalização dessa atividade e os fatores que levaram a mensagem a alcançar a forma gráfica atual. Nessa análise, foram consideradas as mudanças decorrentes não só da introdução da tecnologia digital, mas também das transformações de tendências e padrões culturais que determinaram o período estudado. Como ponto de partida foram utilizados os princípios modernistas, sistematizados pela Bauhaus e seqüenciados pelas diretrizes da Escola Suíça, que determinaram o papel do design gráfico como um transmissor neutro e cuja proposta era a claridade, a objetividade e a funcionalidade, por meio de formas universais e livres de valores regionais. O objetivo central foi analisar a perda da supremacia desses valores, acompanhada pela introdução da tecnologia digital, com novos equipamentos oferecendo novas ferramentas, possibilitando novos enfoques para a idealização dos projetos. / Taking graphic design as an observation axis, the course followed in the professionalization of this activity and the factors that led the message to take its current graphical form were analyzed. In this investigation, not only the changes brought about by the introduction of digital technology were considered, but also the transformation of cultural trends and patterns which determined the period studied. Modernist principles were used as a starting point, as systemized by Bauhaus and arranged by the guidelines established by the Swiss School, which determined the role of the graphic design as a neutral transmitter and whose proposal was clarity, objectivity and functionality, through universal forms and freed of regional values. The main objective was to analyze the loss of supremacy of these values, accompanied by the introduction of the digital technology, with new equipments offering new tools, which enabled new approaches in the conceptualization of projects.

Wearables for health monitoring are rapidly advancing as evidenced by the number of wearable products on the market. More recently, the US Food and Drug Administration approved the Apple Watch for heart monitoring, indicating that wearables are going to be a part of our lives sooner than expected. However, wearables are still based on rigid, conventional electronic materials and fabrication procedures. The use of flexible conducting materials fabricated on flexible substrates allows for more comprehensive health monitoring because of the seamless integration and conformability of such devices with the human skin. Many materials can be used to fabricate flexible electronics such as thin metals, liquid metals, conducting polymers, and 1D and 2D materials. Ti3C2 MXene is a promising 2D material that shows flexibility as well as desirable electronic properties. Ti3C2 MXene is easily processable in aqueous solutions and can be an excellent functional ink for inkjet printing. Here we report the fabrication and the properties of Ti3C2 MXene films inkjet-printed from aqueous dispersions with a nonionic surfactant. The films are uniform and formed with only a few layers on glass and tattoo paper. The MXene films printed on tattoo are used to record ECG signals with comparable signal-to-noise ratio to commercial Ag/AgCl electrodes despite the absence of gels to lower skin-contact impedance. Due to their high charge storage capacity and mixed (ionic and electronic) conductivity, inkjet-printed MXene films open up a new avenue for applications beyond health monitoring.