3D Time-Based Aural Data Representation Using D4 Library’s Layer Based Amplitude Panning Algorithm

Presented at the 22nd International Conference on Auditory Display (ICAD-2016)The following paper introduces a new Layer Based Amplitude Panning algorithm and supporting D4 library of rapid prototyping tools for the 3D time-based data representation using sound. The algorithm is designed to scale and support a broad array of configurations, with particular focus on High Density Loudspeaker Arrays (HDLAs). The supporting rapid prototyping tools are designed to leverage oculocentric strategies to importing, editing, and rendering data, offering an array of innovative approaches to spatial data editing and representation through the use of sound in HDLA scenarios. The ensuing D4 ecosystem aims to address the shortcomings of existing approaches to spatial aural representation of data, offers unique opportunities for furthering research in the spatial data audification and sonification, as well as transportable and scalable spatial media creation and production

Frecuencia de retratamientos endodónticos de acuerdo al tipo de restauraciones post endodoncia en el Centro Especializado en Formación Odontológica, Chiclayo – Perú, 2015 - 2018

El propósito del estudio fue determinar la frecuencia de retratamientos endodónticos de acuerdo al tipo de restauraciones post endodoncia en el Centro Especializado en Formación Odontológica de la Universidad Católica Santo Toribio de Mogrovejo (CEFO-USAT), 2015-2018. Respecto a metodología, el enfoque del estudio fue cuantitativo, nivel de investigación descriptiva, tipo de estudio retrospectivo, transversal y el diseño es observacional. El estudio fue aprobado por el Comité de Ética en Investigación de la Facultad de Medicina de la Universidad Católica Santo Toribio de Mogrovejo. Se revisaron 1228 Historias Clínicas de pacientes adultos atendidos en el área de Endodoncia del CEFO, de las cuales se seleccionaron aquellas que cumplían con los criterios de selección, como es el caso de presentar retratamiento endodóntico; en seguida se procedió a revisar la Ficha Especializada en Endodoncia y el odontograma respectivo, a fin de obtener la información pertinente para el estudio que fue registrada en la Ficha de Recolección de Datos. El análisis de los datos se realizó a través del programa Excel 2013, utilizando estadística descriptiva, a través de frecuencias relativas y absolutas. Se encontró que la frecuencia de retratamientos endodónticos de acuerdo al tipo de restauración post endodoncia en el CEFO fue un 21.96% correspondiente a restauraciones provisionales, 7.57% a restauraciones definitivas y 68.93% ausencia de restauración, concluyendo con este último como el más frecuente de acuerdo al tipo de restauración post endodoncia

Utilization of a magnetic field-driven microscopic motion for piezoelectric energy harvesting.

In spite of the recent advances in the development of high performing piezoelectric materials, their applications are typically limited to the direct conversion of mechanical impact energy to electrical energy, potentially risking mechanical failures. In this study, we developed piezoelectric poly(vinylidenefluoride-trifluoroethylene) (P(VDF-TrFE)) nanofibers integrated with SiO2-shelled Fe3O4 magnetic nanoparticles, to utilize magnetic energy to reliably drive the piezoelectric effect. Specifically, we show that the shape of the magnetic nanoparticles exerts a significant effect on the efficiency of the magneto-mechano-electrical energy conversion as magnetic nanorods exhibit approximately 70% enhancement in electric field generation under cyclic magnetic fields as compared to nanospheres. Under an alternating magnetic field of 200 mT, the magnetic nanorod-piezoelectric nanofiber composite generated a peak-to-peak voltage of approximately 30 mVp-p with a superior durability without any performance degradation after over 1 million cycles. This study demonstrates the potential of magnetic-field responsive, piezoelectric-based materials in energy harvesting applications from non-mechanical energy sources

HIV Serostatus and Tumor Differentiation Among Patients with Cervical Cancer at Bugando Medical Centre.

Evidence for the association between Human immunodeficiency virus infection and cervical cancer has been contrasting, with some studies reporting increased risk of cervical cancer among HIV positive women while others report no association. Similar evidence from Tanzania is scarce as HIV seroprevalence among cervical cancer patients has not been rigorously evaluated. The purpose of this study was to determine the association between HIV and tumor differentiation among patients with cervical cancer at Bugando Medical Centre and Teaching Hospital in Mwanza, North-Western Tanzania. This was a descriptive analytical study involving suspected cervical cancer patients seen at the gynaecology outpatient clinic and in the gynaecological ward from November 2010 to March 2011. A total of 91 suspected cervical cancer patients were seen during the study period and 74 patients were histologically confirmed with cervical cancer. The mean age of those confirmed of cervical cancer was 50.5 ± 12.5 years. Most patients (39 of the total 74-52.7%) were in early disease stages (stages IA-IIA). HIV infection was diagnosed in 22 (29.7%) patients. On average, HIV positive women with early cervical cancer disease had significantly more CD4+ cells than those with advanced disease (385.8 ± 170.4 95% CI 354.8-516.7 and 266.2 ± 87.5, 95% CI 213.3-319.0 respectively p = 0.042). In a binary logistic regression model, factors associated with HIV seropositivity were ever use of hormonal contraception (OR 5.79 95% CI 1.99-16.83 p = 0.001), aged over 50 years (OR 0.09 95% CI 0.02-0.36 p = 0.001), previous history of STI (OR 3.43 95% CI 1.10-10.80 p = 0.035) and multiple sexual partners OR 5.56 95% CI 1.18-26.25 p = 0.030). Of these factors, only ever use of hormonal contraception was associated with tumor cell differentiation (OR 0.16 95% CI 0.06-0.49 p = 0.001). HIV seropositivity was weakly associated with tumor cell differentiation in an unadjusted analysis (OR 0.21 95% CI 0.04-1.02 p = 0.053), but strong evidence for the association was found after adjusting for ever use of hormonal contraception with approximately six times more likelihood of HIV infection among women with poorly differentiated tumor cells compared to those with moderately and well differentiated cells (OR 5.62 95% CI 1.76-17.94 p = 0.004).\ud Results from this study setting suggest that HIV is common among cervical cancer patients and that HIV seropositivity may be associated with poor tumour differentiation. Larger studies in this and similar settings with high HIV prevalence and high burden of cervical cancer are required to document this relationship

Metapolitical New Right Influencers:The Case of Brittany Pettibone

Far-right movements, activists, and political parties are on the rise worldwide. Several scholars connect this rise of the far-right at least partially to the affordances of digital media and to a new digital metapolitical battle. A lot has been written about the far-right’s adoption of trolling, harassment, and meme-culture in their metapolitical strategy, but researchers have focused less on how far-right vloggers are using the practices of influencer culture for metapolitical goals. This paper tries to fill this gap and bring new theoretical insights based on a digital ethnographic case study. By analyzing political YouTuber and #pizzagate propagator Brittany Pettibone, this paper contributes to our understanding of radicalization processes in relation to the use of digital media

Hipsterification and capitalism:A digital ethnographic linguistica landscape analysis of Ghent

This working book is part of an ongoing dialogue with my colleagues at the University of Tilburg and it focusses explicitly on the connection between people, culture, identity, language and semiotic material in a post-digital context. Or more concretely, it analyses how the symbolic economy of Ghent, Belgium is constructed in the neoliberal and post-digital 21st century. The online, global and mobile dimensions of the contemporary material world pose important methodological and theoretical challenges. The research presented here not only makes an empirical, but also a theoretical and methodological argument. I have the explicit aim to contribute and stimulate further interdisciplinary research on social groups and space in the post-digital constellation that characterizes superdiversity. Throughout this working book, I will address these challenges. I will start by tackling the methodological issues in the next chapter where I will introduce my methodology: Digital Ethnographic Linguistic Landscape Analysis or ELLA 2.0. This methodology puts space, or more precisely the geosemiotic landscape and the symbolic economy of spaces central. Space is analysed as constructed through (digitally mediated) social action in context. In Chapter 2, I will introduce the field. I will understand hipster the hipster as a translocal, layered and polycentric micro-population manifesting itself through a very specific style and identity discourse. And just like the hipster is a translocal phenomenon, we see that the hipster- city is also found all over the world. From this translocal introduction of the field, I will zoom in on the process of hipsterification in Ghent Belgium in the 21st century. In Chapter 3, I go back in time to the beginning of the 21st century and analyse the party scene in Ghent as a process of meaning making in the context of neoliberal capitalism. The identity discourse of the Culture Club as edgy, cosmopolitan and hip, created added value for all kinds of big brands. The hipster is not only a transnational, polycentric cultural phenomenon, or a consumer, but also a producer. The identity discourses and semiotizations of the hipster create added value which not only shape micro-enterprises but also cities and platforms. The imagination of Ghent as a hip city is therefor only partly the effect of the presence of hipsters, it is also the effect of neoliberal urban policies. In Chapter 4, I will show how the hipsterification of the historical centre of Ghent is expanding and how new hip infrastructures contribute to the understanding of Ghent as a hip city. At the same time, I will show how the construction of local hipness and originality cannot be understood in full without looking at the higher scales. Hipster culture is a niched, layered and translocal phenomenon and the cultural products and strategies of hipster entrepreneurs, seen from a global scale fit a genre or a format. In Chapter 5, we move from the centre of the city, to a poor and ‘superdiverse’ neighbourhood in the 19th century belt and show how ELLA 2.0 allows us to describe the changes in the social composition of the neighbourhood and the process of hipsterification. In Chapter 5, we move attention to two other sites in the 19th century belt – The Old Docks and the Watt complex – to show how authenticity discourses and hipster semiotics are used to start up a process of hipsterification. I end with a more general reflection and conclusion on the relation between people, cities and capitalism in post-digital Ghent and on the theoretical and methodological impact of the findings. I will explicitly do this from the ethnographic perspective on social space, social groups and social action I developed throughout the book. Maybe even more than a mere methodological contribution, I hope that this book can help to get the conceptualization of superdiversity ‘out of sociolinguistics’ that Arnaut (et al., 2017: 4) hopes for

Detecting social changes in times of Superdiversity:An Ethnographic Linguistic Landscape Analysis of Ostend in Belgium

Superdiversity, on the one hand, calls for new frames, concepts, and methodologies to deal with a fluid reality characterized by rapid (social) changes. On the other hand, we also have a need to broaden our scope beyond the heavy focus on the urban metropolis as the locus of superdiversity. With this paper I want to contribute to the research addressing these challenges by infusing existing research within Linguistic Landscape Studies with a semiotic and ethnographic perspective and add to our existing knowledge of superdiversity by focusing on a ‘small’ Belgian city called Ostend instead of a cosmopolitan world city with millions of inhabitants. I argue that Ethnographic Linguistic Landscape Analysis (ELLA) enables us to describe, quite accurately, rapid social changes in complex superdiverse neighborhoods. Moreover, ELLA enables us to move beyond a mere synchronic picture of superdiverse neighborhoods and sketch a ‘stratigraphy’ and a historical perspective on them

Populism as a mediatized communicative relation:The birth of algorithmic populism

In this paper, I want to introduce a(n digital) ethnographic approach to populism that understands populism as a (digitally) mediatized chronotopic communicative and discursive relation. Populism, I argue, is not only constructed in a (mediatized) communicative relation between journalists, politicians and academics, but also in the relation to citizens, activists and computational agency. Attention to all these actors, and the media they use, is of crucial importance if we want to understand populism. Digital media are not just new media that populists use, their algorithms and affordances reshape their populism. In times of digitalization, we cannot understand populism by only looking at ‘the input’, the frame that actors prepare for uptake, it is about the uptake as well. More concretely, I will argue that digital media have given birth to a new form of populism: algorithmic populism. Understanding and focusing on populism as a ‘communicative relation’ between all these human and non-human actors allows use to analyze ‘populism’ more precisely