Service Compositions in Challenged Mobile Environments Under Spatiotemporal Constraints

Opportunistic network created among mobile devices in challenged environments can be effectively exploited to provide application services. However, data and services may be subject to space and time constraints in challenged environments where it is critical to complete application services within given spatiotemporal limits. This paper discusses an analytical framework that takes into account human mobility traces and provides quantitative measures of the spatiotemporal requirements for service sharing and composition in challenged opportunistic environments. The analytical results provide estimates on feasibility of service sharing and service compositions for various mobility models. To validate the framework, we conduct simulation experiments using multiple human mobility and synthesized datasets. In these experiments, we analyze service composition feasibility, service completion rate and time for resource utilization

Access beyond geographic accessibility: understanding opportunities to human needs in a physical-virtual world

Access to basic human needs, such as food and healthcare, is conceptually understood to be comprised of multiple spatial and aspatial dimensions. However, research in this area has traditionally been explored with spatial accessibility measures that almost exclusively focus on just two dimensions. Namely, the availability of resources, services, and facilities, and the accessibility or ease to which locations of these opportunities can be reached with existing land-use and transport systems under temporal constraints and considering individual characteristics of people. These calculated measures are insufficient in holistically capturing available opportunities as they ignore other components, such as the emergence of virtual space to carry out activities and interactions enabled by modern information and communication technologies (ICT). Human dynamics today exist in a hybrid physical-virtual space, and recent research has highlighted the importance of understanding ICT, individual behavior, local context, social relations, and human perceptions in identifying opportunities available to people. However, there lacks a holistic approach that relates these different aspects to access research. This dissertation addresses this gap by proposing a new conceptual framework for the geography of access for various kinds of human needs, using food access as a case study to illustrate how the proposed framework can be applied to address critical societal issues. An interactive multispace geographic information system (GIS) web application is developed to better understand and visualize individual potential food access based on the conceptual framework. This dissertation contributes to the body of research with a proposed conceptual framework of access in a hybrid physical-virtual world, integration of various big and small data sources to reveal information relating to the access of people, and novel development of a multi-space GIS to analyze and visualize access to opportunities

What is Robotics: Why Do We Need It and How Can We Get It?

Robotics is an emerging synthetic science concerned with programming work. Robot technologies are quickly advancing beyond the insights of the existing science. More secure intellectual foundations will be required to achieve better, more reliable and safer capabilities as their penetration into society deepens. Presently missing foundations include the identification of fundamental physical limits, the development of new dynamical systems theory and the invention of physically grounded programming languages. The new discipline needs a departmental home in the universities which it can justify both intellectually and by its capacity to attract new diverse populations inspired by the age old human fascination with robots. For more information: Kod*la

The Translocal Event and the Polyrhythmic Diagram

This thesis identifies and analyses the key creative protocols in translocal performance practice, and ends with suggestions for new forms of transversal live and mediated performance practice, informed by theory. It argues that ontologies of emergence in dynamic systems nourish contemporary practice in the digital arts. Feedback in self-organised, recursive systems and organisms elicit change, and change transforms. The arguments trace concepts from chaos and complexity theory to virtual multiplicity, relationality, intuition and individuation (in the work of Bergson, Deleuze, Guattari, Simondon, Massumi, and other process theorists). It then examines the intersection of methodologies in philosophy, science and art and the radical contingencies implicit in the technicity of real-time, collaborative composition. Simultaneous forces or tendencies such as perception/memory, content/ expression and instinct/intellect produce composites (experience, meaning, and intuition- respectively) that affect the sensation of interplay. The translocal event is itself a diagram - an interstice between the forces of the local and the global, between the tendencies of the individual and the collective. The translocal is a point of reference for exploring the distribution of affect, parameters of control and emergent aesthetics. Translocal interplay, enabled by digital technologies and network protocols, is ontogenetic and autopoietic; diagrammatic and synaesthetic; intuitive and transductive. KeyWorx is a software application developed for realtime, distributed, multimodal media processing. As a technological tool created by artists, KeyWorx supports this intuitive type of creative experience: a real-time, translocal “jamming” that transduces the lived experience of a “biogram,” a synaesthetic hinge-dimension. The emerging aesthetics are processual – intuitive, diagrammatic and transversal

The Temporality and Rythmicity of Lived Street Space

Tämä väitöskirja, lyhyesti ilmaistuna, tarkastelee arjen katutilan ja kaupunkiliikkumisen ajallisuuksia ja rytmisyyksiä. Kadut ja muut liikkumisen tilat kaupungissa ovat urbaanin arkielämän tärkeimpiä tapahtumapaikkoja – ne ovat keskeisessä roolissa siinä, miten (rutiininomaisesti) käytämme ja olemme vuorovaikutuksessa rakennetun ympäristön kanssa, miten juurrumme asuinympäristöihimme, ja miten kohtaamme muita ihmisiä kaupunkitilassa – ja näin ollen ovat olennaisessa roolissa elävien, kestävien ja tasa-arvoisten kaupunkien muodostumisessa. Tarkastellen katua mobiilina kokoutumana (mobile assemblage), tutkimus selvittää ja käsitteellistää eräitä keskeisimpiä liikkumisen ja katutilan rytmejä, ja pyrkii tuottamaan yksityiskohtaisen kuvan kaupunkiympäristön toistuvista (mikro-)ajallisuuksista liikkumisen näkökulmasta, mitkä osaltaan määrittävät kaupunkiympäristöä jokapäiväisenä ’elettynä’ tilana. Työn teoreettinen kehys ammentaa useista eri kaupunkien ajallisuutta käsitteellistävistä perinteistä, erityisesti Lefebvreläisestä rytmianalyysistä, ja määrittelee tarkasteltavat liikkumisen rytmit tilan, ajan ja kehollisen liikkumisen erottamattomiksi keskinäissuhteiksi. Tutkimuksen empiirisessä keskiössä on ruohonjuuritason liikkuminen. Liikkuminen, tai mobiliteetti, ymmärretään tässä laajasti (seuraten uutta mobiliteetin paradigmaa) toimintoina, jotka muodostavat merkityksiä, kokemuksia, kuulumisen tunteita, sosiaalis-materiaalisia vuorovaikutuksia, mielikuvia ja (liikkumisen) kulttuureita samalla, kun ne siirtävät ihmisiä paikasta A paikkaan B. Tutkimuksessa on tarkasteltu arjessa toistuvia kävely- ja ajoreittejä sekä liikkumisen tapahtumaa tavanomaisissa katuympäristöissä kahdessa suuressa suomalaisessa kaupungissa eri liikkumisen tutkimuksen menetelmiä (mobile methods) (mukaan menemiseen perustuvia syvähaastatteluita, valokuvia, reittivideoita ja reittikarttoja; videoituja paikkahavainnointeja) sekä jälkifenomenologista tutkimusotetta hyödyntäen. Tutkimusaineiston analyysi – mikä on tarkemmin esitelty sisällytetyissä tutkimusartikkeleissa (#01–04) – tuo esiin, yhtäältä, miten ihmiset (inter)subjektiivisesti hahmottavat, kokevat ja toiminnallaan muokkaavat kadun (ja laajemmin kaupungin) rytmisyyksiä omien liikkumisrutiiniensa konteksteissa, ja toisaalta, miten tilallisen toiminnan ja liikkeen kautta tilassa liikkujat tuottavat ajallista, tai hetkellistä, kadun arkkitehtuuria sopeutumalla tai haastamalla muualta asetettuja rytmisyyksiä. Analyysi tuo lisäksi esiin erilaisia rytmien välillisyyksiä (#01) ja rytmityksen prosesseja (#02), kaupunkiympäristön morfologian vaikutuksia näiden rytmien muodostumiseen (#03), sekä katutilan haltuunoton ajallisesti määrityviä rytmisiä muotoja (#04). Työ esittää, että nouseva rytmianalyyttinen tutkimusote on soveltuva ja hyödyllinen tapa lähestyä ja kartoittaa dynaamisia ja alati muuttuvia kaupunki- ilmiöitä. Arjen katutilan suhteen rytmianalyysi paljastaa erilaisia mikrotason ajallisuuksia (yhdessä makrotason kanssa), joiden valossa katuympäristö näyttäytyy monien heterogeenisten ja samanaikaisten ajallisuuksien tilana. Rytmianalyysi auttaa myös ymmärtämään kaupunkiliikkumisen moniulotteisuutta sekä arjen reittien merkityksiä funktionaalisten tekijöiden ohella, tuoden esiin ajallisten keho-ympäristö suhteiden moninaisuuden kirjoa. Yhdessä ne piirtävät vivahteikkaan kuvan kaupunkirakenteista kartoittaen sekä formaaleja (suunnitellut, ’ylhäältä’ asetetut) että informaaleja (sattumanvaraiset tai rutiininomaiset, ’alhaalta’ asetetut) liikkumisen rakenteita. Ne korostavat ihmistoiminnan jatkuvaa, niin rytmistä kuin kitkaista sykettä, kaupunkikudoksen intensiteettiä. Toisin sanoen, ne tuovat esiin kaupungin ja katuympäristöjen tahdin moninaisuuden sekä ennalta suunniteltuna että liikkeellä olevien ihmisten tuottamana.This dissertation, in short, examines the temporalities and rhythmicities of day-to- day urban mobility practices on the city street. Streets, and other mobility-centred spaces of the city, are the main stages of public urban life – they are essential to how we (routinely) use and interact with the built environment, connect to our neighbourhoods, and encounter other city dwellers – and thus play a key part in the making of liveable, sustainable and just cities. Examining the street as a mobile assemblage, the study probes and conceptualizes some of the key rhythms that emerge from such daily mobility patterns of the street, aiming to draw a detailed picture of the recurring urban (micro)temporalities from a mobilities perspective that partially constitute the ‘lived’ aspects of the day-to-day built environments. The theoretical framework on temporalities draws from various conceptual lineages, notably a Lefebvrian rhythmanalytical framework, and defines the studied mobility rhythms of the street as the inseparable relations between spaces, times and mobile embodied practices. The practical research focus is set on the grassroot-level embodied mobilities. Here mobility practices are understood in a broad sense (following a new mobilities paradigm) as activities that, whilst physically moving people from place A to place B, also produce meanings, experiences, sense of belonging, socio-material interactions, imageries, and (mobile) cultures in the process. Utilizing various mobile research methods (in-depth go-along interviews, participant-produced photographs, route videos and route maps; extensive videoed site observations), and by taking a postphenomenological research perspective, the dissertation examines recurring walking and driving routes, and the mobile event of day-to-day street space in two major Finnish cities. The analysis of the data – presented in four research articles (#01–04)– reveals, on one hand, how people (inter)subjectively make sense of and modify the rhythmicities of the street (and the city in general) inside their own mobile daily routines, and, on the other, how people – through their (mobile) uses of the space – produce temporal, or momentarily perceivable, architecture of the street by adapting to, or contesting, pre-set rhythmicities. The analysis further reveals different mediacies (#01) and processes of pacing (#02) of such rhythmicities, the role of urban morphologies in the formation of these rhythmicities (#03), and the time-sensitive rhythmic modes of appropriating the street through mobile uses (#04). The work proposes that the emerging rhythmanalytical research framework is an applicable and advantageous mode for approaching and mapping the urban phenomena that are inherently caught in a continuous flux and flow. In the case of the day-to-day street space, rhythmanalysis can be used to reveal micro-level (next to macro-level) temporalities that depict the street as a site of multiple heterogeneous and simultaneous temporalities and timings. Likewise, rhythmanalysis, helps us to understand the complexity of urban mobilities and day-to-day routes beyond their strictly functional means, revealing the multiplicities of temporal relations in such recurring body-environment relations. Together, they are able to draw a nuanced picture of some of the key urban structures, mapping both formal (planned and designed, set from the ‘above’) as well as informal (accidental and routine-like, set from the ‘below’) mobility structures of the city. They highlight the continuous, rhythmic and arrhythmic, pulses of human activity in the city, the intensities of the urban fabric. In other words, they reveal multiplicities of the beat of the city and its streets, both the planned and designed as well as the ones produced by their inhabitants on the move

Incorporating Environmental Variability Into Assessment and Management of American Lobster (Homarus americanus)

The American lobster (Homarus americanus) support one of the most valuable fisheries in the United States. A growing body of literature recognizes the importance of environmental variables in regulating this species’ biogeography and population dynamics. However, the current lobster stock assessment and management do not explicitly consider the impact of environmental variables such as water temperature and assumes spatiotemporal variabilities in the lobster environment as random background noises. Furthermore, while climate-induced changes in marine ecosystems continue to impact the productivity of lobster fisheries, studies that model lobster response to altered environmental conditions associated with climate change are lacking. As such, evaluating changes in lobster biogeography and population dynamics, as well as explicitly incorporating quantified lobster response to altered environmental conditions into the specie’s stock assessment will be critical for effective lobster fisheries management in a changing environment. This dissertation research developed a modeling framework to assess and incorporate environmental variability in assessment and management of American lobster stocks in the Gulf of Maine, Georges Bank, and southern New England. This modeling framework consists of: 1) a qualitative bioclimate envelope model to quantify the spatiotemporal variability in availability of suitable lobster habitat; 2) a statistical climate-niche model to quantify spatiotemporal variability of lobster distribution; and 3) a process-based population size-structured assessment model to incorporate the effect of environmental variable such as water temperature in lobster population dynamics. The developed modeling framework was used to predict climate-driven changes in lobster habitat suitability and distribution, as well as to determine whether incorporating the environmental effects can better inform historical recruitment especially for years when recruitment was very low or very high. The first component of the framework provides a qualitative bioclimate envelope model to evaluate the spatiotemporal variability of suitable lobster habitat based on four environmental variables (bottom temperature, bottom salinity, depth, and bottom substrate type. The bioclimate envelope model was applied to lobsters in Long Island Sound and inshore Gulf of Maine waters. In the Long Island Sound, an examination of the temporal change in annual median habitat suitability values identified possible time blocks when habitat conditions were extremely poor and revealed a statistically significant decreasing trend in availability of suitable habitat for juveniles during spring from 1978 to 2012. In the Gulf of Maine, a statistically significant increasing trend in habitat suitability was observed for both sexes and stages (juvenile and adult) during the spring (April–June), but not during the fall (September–November). The second component of the framework provides a statistical niche model to quantify the effects of environmental variables on lobster abundance and distribution. The statistical niche model was used to estimate spatiotemporal variation of lobster shell disease in Long Island Sound, and to quantify environmental effects on season, sex- and size-specific lobster distributions in the Gulf of Maine. In the Long Island Sound, the statistical niche model found that spatial distribution of shell disease prevalence was strongly influenced by the interactive latitude and longitude effects, which possibly indicates a geographic origin of shell disease. In the Gulf of Maine, the statistical niche model indicated that bottom temperature and salinity impact on lobster distribution were more pronounced during spring, and predicted significantly higher lobster abundance under a warm climatology scenario. The third component of the framework provides a size-structured population model that can incorporate the environmental effects to inform recruitment dynamics. The size-structured population model was applied to the Gulf of Maine/Georges Bank lobster stock, where climate-driven habitat suitability for lobster recruitments was used to inform the recruitment index. The performance of this assessment model is evaluated by comparing relevant assessment outputs such as recruitment, annual fishing mortality, and magnitude of retrospective biases. The assessment model with an environment-explicit recruitment function estimated higher recruitment and lower fishing mortality in the early 2000s and late 2010s. Retrospective patterns were also reduced when the environmentally-driven recruitment model was used. This dissertation research is novel as it provides the comprehensive framework that can quantify impacts of environmental variability on lobster biogeography and population dynamics at high spatial and temporal scales. The modeling approaches developed in this study facilitate the need to invoke assumptions of environment at non-equilibrium and demonstrate the importance of considering environmental variability in the assessment and management of the lobster fisheries. This dissertation is dedicated to increase the breadth of knowledge about the dynamics of lobster populations and ecosystems and renders a novel first step towards sustainable management of this species given the expected changes in the Northwest Atlantic ecosystem

Media Use in Digital Everyday Life

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Big Data for Qualitative Research

Big Data for Qualitative Research covers everything small data researchers need to know about big data, from the potentials of big data analytics to its methodological and ethical challenges. The data that we generate in everyday life is now digitally mediated, stored, and analyzed by web sites, companies, institutions, and governments. Big data is large volume, rapidly generated, digitally encoded information that is often related to other networked data, and can provide valuable evidence for study of phenomena. This book explores the potentials of qualitative methods and analysis for big data, including text mining, sentiment analysis, information and data visualization, netnography, follow-the-thing methods, mobile research methods, multimodal analysis, and rhythmanalysis. It debates new concerns about ethics, privacy, and dataveillance for big data qualitative researchers. This book is essential reading for those who do qualitative and mixed methods research, and are curious, excited, or even skeptical about big data and what it means for future research. Now is the time for researchers to understand, debate, and envisage the new possibilities and challenges of the rapidly developing and dynamic field of big data from the vantage point of the qualitative researcher

Praxitopia : How shopping makes a street vibrant

During recent decades, shopping’s geographical manifestations have altered radically and the presumed ‘death’ of town centre retailing has become a public concern. The social, cultural, and economic backgrounds of this decentralisation of retail and its effects on city life have been studied comprehensively. However, to date, few studies have examined the changing dynamics of non-mainstream shopping geographies, particularly local shopping streets. How shopping is enacted in such places, and shopping’s part in shaping them, has been largely overlooked. Aspiring to fulfil this knowledge gap, this dissertation examines shopping activities on Södergatan, a local shopping street in a stigmatized ‘super-diverse’ district of Helsingborg, Sweden known as Söder, and contributes to the literature on shopping geographies by drawing on a sociocultural perspective.The study draws on practice theory and focuses on shopping as the main unit. The analysis is built on a sensitivity to the interrelationships existing between social practices and place, emerging from the epistemic positioning resulting from the identification of 'modes of practices'. In order to grasp the enmeshed character of shopping, which is complicated by cultural, spatial, temporal, material, and sensorial layers, video ethnography was employed as the primary research collection method, in combination with go-along interviews, observation and mental-mapping.The research reveals five major modes of shopping practice which jointly represent a typology for understanding shopping in terms of being enacted in the street; i.e. convenience shopping, social shopping, on-the-side shopping, alternative shopping, and budget shopping. This thesis also shows that the bundling of these modes of shopping shapes the street into a vibrant part of the city by interrelating with the shopping street’s sensomaterial and spatiotemporal dimensions in complex and multifaceted directions. Consequently, the local shopping street is conceptualized as a praxitopia, a place co-constituted through social practices

Urban Informatics

This open access book is the first to systematically introduce the principles of urban informatics and its application to every aspect of the city that involves its functioning, control, management, and future planning. It introduces new models and tools being developed to understand and implement these technologies that enable cities to function more efficiently – to become ‘smart’ and ‘sustainable’. The smart city has quickly emerged as computers have become ever smaller to the point where they can be embedded into the very fabric of the city, as well as being central to new ways in which the population can communicate and act. When cities are wired in this way, they have the potential to become sentient and responsive, generating massive streams of ‘big’ data in real time as well as providing immense opportunities for extracting new forms of urban data through crowdsourcing. This book offers a comprehensive review of the methods that form the core of urban informatics from various kinds of urban remote sensing to new approaches to machine learning and statistical modelling. It provides a detailed technical introduction to the wide array of tools information scientists need to develop the key urban analytics that are fundamental to learning about the smart city, and it outlines ways in which these tools can be used to inform design and policy so that cities can become more efficient with a greater concern for environment and equity