Predicting human mobility through the assimilation of social media traces into mobility models

Predicting human mobility flows at different spatial scales is challenged by the heterogeneity of individual trajectories and the multi-scale nature of transportation networks. As vast amounts of digital traces of human behaviour become available, an opportunity arises to improve mobility models by integrating into them proxy data on mobility collected by a variety of digital platforms and location-aware services. Here we propose a hybrid model of human mobility that integrates a large-scale publicly available dataset from a popular photo-sharing system with the classical gravity model, under a stacked regression procedure. We validate the performance and generalizability of our approach using two ground-truth datasets on air travel and daily commuting in the United States: using two different cross-validation schemes we show that the hybrid model affords enhanced mobility prediction at both spatial scales.Comment: 17 pages, 10 figure

Inferring Person-to-person Proximity Using WiFi Signals

Today's societies are enveloped in an ever-growing telecommunication infrastructure. This infrastructure offers important opportunities for sensing and recording a multitude of human behaviors. Human mobility patterns are a prominent example of such a behavior which has been studied based on cell phone towers, Bluetooth beacons, and WiFi networks as proxies for location. However, while mobility is an important aspect of human behavior, understanding complex social systems requires studying not only the movement of individuals, but also their interactions. Sensing social interactions on a large scale is a technical challenge and many commonly used approaches---including RFID badges or Bluetooth scanning---offer only limited scalability. Here we show that it is possible, in a scalable and robust way, to accurately infer person-to-person physical proximity from the lists of WiFi access points measured by smartphones carried by the two individuals. Based on a longitudinal dataset of approximately 800 participants with ground-truth interactions collected over a year, we show that our model performs better than the current state-of-the-art. Our results demonstrate the value of WiFi signals in social sensing as well as potential threats to privacy that they imply

The Formal, the Informal, and the Precarious: Making a Living in Urban Papua New Guinea

For many Papua New Guineans, the dominant accounts of 'the economy' � contained within development reports, government documents and the media � do not adequately reflect their experiences of making a living. Large-scale resource extraction, the private sector, export cash cropping and wage employment have dominated these accounts. Meanwhile, the broader economic picture has remained obscured, and the diversity of economic practices, including a flourishing 'informal' economy, has routinely been overlooked and undervalued. Addressing this gap, this paper provides some grounded examples of the diverse livelihood strategies people employ in Papua New Guinea's growing urban centres. We examine the strategies people employ to sustain themselves materially, and focus on how people acquire and recirculate money. We reveal the interconnections between a diverse range of economic activities, both formal and informal. In doing so, we complicate any clear narrative that might, for example, associate waged employment with economic security, or street selling with precarity and urban poverty. Our work is informed by observations of people's daily lives, and conversations with security guards (Stephanie Lusby), the salaried middle class (John Cox), women entrepreneurs (Ceridwen Spark), residents from the urban settlements (Michelle Rooney) and betel nut traders and vendors (Timothy Sharp). Collectively, our work takes an urban focus, yet the flows and connectivity between urban and rural, and our focus on livelihood strategies, means much of our discussion is also relevant to rural people and places. Our examples, drawn from urban centres throughout the country, each in their own way illustrate something of the diversity of economic activity in urban PNG. Our material captures the innovation and experimentation of people's responses to precarity in contemporary PNG.AusAI

Chronotypology:a comparative method for analyzing game time

This article presents a methodology called “chronotypology” which aims to facilitate literary studies approaches to video games by conceptualizing game temporality. The method develops a comparative approach to how video games structure temporal experience, yielding an efficient set of terms—“diachrony,” “synchrony,” and “unstable signifier”—through which to analyze gaming’s “heterochronia” or temporal complexity. This method also yields an approach to the contentious topic of video game narrative which may particularly recommend it to literary scholars with an interest in the form. Along with some examples from conventional games, a close reading of the “reality-inspired” game Bury Me, My Love will serve to demonstrate the use of a chronotypological approach

How to be Critical of Security Today? Life in Motion, Untimeliness and the Critique of End-Thinking

This article starts from the observation of intense political mobilisations of existential endings. One of the defining challenges for critical engagements with such mobilisations remains how to take war, environmental degradation and pandemics seriously without making existential end-times the conditions that define the present. The article proposes to move beyond critical knowledge that makes security contingent and engage with the conception of life inscribed in the mobilisations of existential endings. It puts forward a concept of life that emphasises continuous movement rather than defining it from the perspective of its inevitable end in death. This point of view challenges traditional existential notions of life and death, highlighting instead the dynamic and transformative nature of life itself

Leaping and dancing with digitality : Exploring human-smartphone-entanglements in classrooms

This chapter explores digitality as part of young people’s everyday lives in the Arctic. It is based on two ethnographic studies situated in the political context of the “digital leap”, the governmental and curricular emphasis on digitality in education in Finland. With the more formal “digital leap”, informal engagements and attachments with digitality intertwine, in which students’ own smartphones play an increasingly significant role. The analyses use the notion of entanglement (Barad) to examine how primary school and upper secondary school students emerge in their situated and specific encounters with smartphones in school. The starting points of things, bodies, affect, time and space open up insights to connectivity between young people’s digital activities and global economic networks as well as to the multidirectionality between humans and technologies: while the students access their digital devices, the digitalities also access their users. We suggest that this wilder form of “digital leap” requires reconsidering materiality, affect, and instability of space and time.Peer reviewe

ASSEMBLING ‘DIFFERENCE’ THROUGH DIGITIZED MUSIC: THE CASE OF URBAN PIRACY IN RECIFE, BRAZIL

This paper draws from work-in-progress research focusing on the piracy of digitized music within informal markets in the global south. We consider this topic with reference to empirical data garnered from an ethnographic study of informal media markets in Recife, Brazil. These markets are composed of piracy hawkers – street sellers with piracy stalls equipped with CD/DVD player, car battery and speakers, who walk the streets playing and selling copied digital media, particularly, locally produced music. Overall we seek to explore how these alternative means of production, distribution and consumption of locally produced content enable engagement with local culture and, through this, preserve their cultural ‘distinct-ness’ within the global south. We draw on Deleuze and Guattari (1987) assemblage theory and argue that these piracy stalls are part of complex urban arrangements which enact and extend the circulation and consumption of local music by means of local product and service curation, and through market scaling. Thus, they preserve and emphasize cultural ‘difference’ through digitized music. The findings reported here are based on ongoing analysis

Improving Communication Access with Deaf People Through Nursing Simulation: A Cross-Disciplinary Collaboration

Baccalaureate nursing and sign language interpreting students participated in a pediatric discharge simulation with a deaf person playing the role of the baby’s parent. At the conclusion of the simulation, participants were emailed a consent letter and a link to a 17-item questionnaire developed by the authors. Responses were analyzed both quantitatively and qualitatively, whereby nonparametric statistics were calculated to examine Likert-scale items. A Mann-Whitney test statistic was calculated, instead of an independent samples t-test, given the smaller sample in the current study (n = 26). A question was posed to participants that evaluated their self-perception of the effectiveness of the simulation: “I am better able to communicate healthcare information to a deaf parent.” This was rated on a Likert-scale and results indicated a statistically significant difference between groups of students (U = 173.00, p = .020), indicating that nursing students (Median = 6) were more likely to agree with the question than interpreting students (Median = 5). Both interpreting and nursing students’ qualitative responses were positive, stating the advantages of practicing vital nursing and communication skills with a deaf parent in a less stressful and safe environment. Nursing students learned how to collaboratively communicate with someone of a different language and culture. Interpreting students gained experience interpreting medical information in a realistic, dynamic, and unrehearsed setting. Both groups developed a healthy respect for the other student’s role and the deaf person within the simulation. Collaboration among interpreting and nursing students in simulation may enhance understanding and provide authentic practice opportunities of unique accommodations to achieve patient-centered health care