Academic literature on the topic 'Protecting web ser- vice'

To improve the poor intelligence and personalized service of the learning system in current distance education and training, a personalized learning system model based on data mining technology was proposed. Then, the method of applying the decision tree and BP neural network algorithm to de-sign the system was described in detail. Finally, the core module of the per-sonalized distance education system combined with Web was designed. The personalized function module introduced how the user operates the intelli-gent Web reasoning in the module according to the user input learning in-formation and gave the most matching learning materials. Finally, the appli-cation results showed that the system greatly improved the personalized ser-vice module.

The development of information technology has currently been growing rapidly and provided many benefits in various fields, one of which is the library. The application of information tech-nology to the library is usually called a digital library (digital library). Digital library makes it easy for users to obtain information sources easily. Users can quickly search for book data in-formation, find out the number of books available, makes direct borrowing etc. Libraries in a university support the implementation of education, and teaching, research and community ser-vice. The library in the university has a collection of reference books and research reports that are always obtained every year.The presence of smartphone technology makes it easier for users to be comfortable, fast and easy in completing their work. However, there are difficulties which have to deal with while the display interface of a web-based information system does not support to be displayed on smartphone screen. This has an impact on the difficulties encountered by users in accessing the information. Currently, the digital libraries at Muhammadiyah University of Purworejo are web-based. But it has obstacles with display interface which does not support to be displayed in mobile version. Besides that there are menus that are still not categorized correctly. In order to improve access and give users easiness, this research made the design of a mobile-based Digital Library.

Abstract Introduction: Sickle cell disease (SCD) is one of the most common inherited hemoglobinopathies in Middle East and specifically Saudi Arabia which leads to vaso-occlusive, hematological and infectious crises, including stroke as one of the common complications (1,2). Primary prevention of the first stroke is carried out by risk assessment using transcranial Doppler (TCD) ultrasound and providing blood transfusions to SCD patients with higher than 199 cm/sec TCD velocities (3). Furthermore, althoughhigher HbF expression is also associated with less severity of the SCD, no studies are available about association of HbF with TCD flow velocities and hence risk of stroke in SCD (4). This study has been carried out to identify SCD patients at high risk of stroke based on TCD results, and to determine the association between Hb-F levels and blood velocity using TCD results. Patients and Methods: Cross-sectional study included 56 pediatric SCD patients. TCD ultrasounds were performed at diagnosis for assessment of first stroke risk and then after every 6 months for follow-up studies. Patients with elevated TCD velocities given monthly packed RBCs transfusions to have HbS level around 40% (5,6). Data analysis was performed by "Statistical Package for the Social Sciences (SPSS, Version 17.0)". Results: In our patient population, male to female ratio was 1.33:1 (32 males, 24 females) and mean age was 7.5 ± 3.42 years (range: 2-14 years). Seven (12.5%) patients had TCD velocities higher than or equal to 200 cm/second, with mean age of 4.7±1.4 years and mean HbF 7.5±3.8, which were significantly different from patient group with normal flow velocities (mean age of 7.8±3.4 years; mean HbF 20±15.9). Patients with higher TCD velocities receiving blood transfusion got velocities in normal range within 6-12 months. Most importantly, normal TCD flow velocities were significantly associated with higher HbF expression and vice versa. As protective role of HbF in sickle cell patients is well established (11;13) and inducing the HbF expression in such patients using medications like hydroxyurea (20) or by genetically modifying the silencing of fetal γ-globin gene have been long standing goal in treatment of sickle cell disease (21), our findings about correlation of higher TCD flow velocities with lower HbF expression (and vice versa) and hence higher risk of first stroke in sickle cell patients provides a new direction for assessing the risk for vasculopathy in SCD patients. Discussion/Conclusions : Low prevalence of SCD patients with higher TCD velocities in our study population is in accordance with previous studies (5). Risk of first stroke was clinically manageable by 6-12 months of regular PRBCs transfusions, per established clinical practice (6). Moreover, normal TCD flow velocities and hence lower risk of stroke was significantly associated with the higher hemoglobin F expression and vice versa. As protective role of HbF in sickle cell patients is well established (4) and inducing the HbF expression in such patients have been long standing goal in treatment of sickle cell disease (7), our findings about correlation of higher TCD flow velocities with lower HbF expression (and vice versa) and hence higher risk of first stroke in sickle cell patients provides a new direction for assessing the risk for vasculopathy in SCD patients. References: 1. Kato GJ. Curr Opin Hematol. 2016 May;23(3):224-32. 2. Ahmed AE, et al. Health Qual Life Outcomes. 2015 Nov 16;13:183. 3. Lawrence C, Webb J. Curr Neurol Neurosci Rep. 2016 Mar;16(3):27. 4. Liu L, et al. Exp Biol Med (Maywood). 2016 Apr;241(7):706-18. 5. Adams R, McKie V, Hsu L, et al. N Engl J Med. 1998;339: 5-11. 6. Bernaudin F, et al. Blood. 2016 Apr7;127(14):1814-22. 7. Pule GD, et al. Clin Transl Med. 2016 Mar;5(1):15. doi: 10.1186/s40169-016-0092-7. Disclosures Saglio: Novartis: Consultancy, Honoraria; BMS: Consultancy, Honoraria; Ariad: Consultancy, Honoraria; Pfizer: Consultancy, Honoraria; Roche: Consultancy, Honoraria.

O objetivo deste artigo é revelar a entrada do extensionista pesquisador/cartógrafo, do campo da comunicação popular e comunitária, no território trans. Quais as implicações e afetos múltiplos geram no corpo pesquisador e no corpo pesquisado, que também é pesquisador e vice-versa. A via de mão dupla dessas pesquisas concomitantes e a permissão das ativistas do movimento social, para nossa entrada no campo. A pesquisa se dá a partir das ações de extensão do Projeto “Plataformas Digitais: a produção comunitária de novas narrativas alternativas ao discurso hegemônico, como dispositivo de produção de novos sentidos”, em curso na Universidade Estadual de Londrina (UEL). O objetivo é a construção coletiva de um programa de rádio, cuja narrativa seja contra hegemônica à narrativa produzida pela grande mídia, que via de regra, as estigmatiza. Descobrir cada potencialidade na construção de uma nova narrativa, que possa interferir na construção de uma nova imagem das transexuais e travestis da cidade de Londrina, cidade do interior do Estado Paraná, interferindo no imaginário social acerca desta população. Para tanto a pesquisa utiliza-se da proposta metodológica da Cartografia Sentimental, de Sueli Rolnik, que se inspira na fonte cartográfica de Deleuze e Guattari. Toda inserção, afetações e agenciamentos, se transversalizam a partir do corpo pesquisador ao encontro com os corpos vibráteis e rizomáticos das trans, participantes do Coletivo Elity Trans. A metodologia teórica-pragmática-poética, da cartografia sentimental, possibilita que o pesquisador/cartógrafo narre em primeira pessoa as implicações com o campo. O processo de produção do programa de rádio já dura dez meses e os quatro primeiros programas para web rádio acabaram de ser finalizados. A produção de uma rádio revista eletrônica, denominada “É BABADO, KYRIDA!” é resultado de um processo de participação democrática, que reuniu as trans, os ativistas do Grupo Elity Trans, docentes e discentes da Universidade Estadual de Londrina e de outras universidades, tendo como eixo norteador a saúde integral da população trans e garantindo seu protagonismo. A narrativa alternativa em rádio visa revelar a diversidade de pontos de vista das pessoas trans sobre a realidade. O Brasil é o país que mais mata transexuais no mundo, cuja expectativa de vida é de 35 anos. Diante destes dados alarmantes, o programa visa contribuir com a prestação de serviço à toda sociedade, esclarecendo sobre os direitos desta população, a fim de diminuir os estigmas sociais impostos e mostrar como pode ser rica a convivência com as diferenças.

This paper is about maintaining the surveillance of the wild animals to protect tribal and vice versa. As we know, tribal people who live in the forest areas have threat from the wild animals. So we have proposed an idea in such a way that it helps in protecting the tribal people. The idea says that firstly the wild animals are caught or brought together and a device is attached to them. With the device, we can track them in the forest or in the surrounding area with the help of GPS concept. Once a device or the animal which has the device gets tracked, the information or the data such as the proximity distance is immediately sent to the web application designed for this project. Further it alarms the villagers or the tribal people and informs to the forest officers, so that they can be taken under control. There is also a camera incorporated in the device. This will constantly capture the video surveillance from the animal’s point of view. If there occurs any instance of hunting (human detection) of endangered animals or any wildlife, the images of the people who get captured in the video feed are sent to the web application along with the location of the device at that particular instant of time. Human detection will be done using Haar cascade. This will help us in locating the exact area of occurrence of hunting and take extra precautions for the animals in such areas.

Introduction Many social media tools and services are free to use. This fact often leads users to the mistaken presumption that the associated data generated whilst utilising these tools and services is without value. Users often focus on the social and presumed ephemeral nature of communication – imagining something that happens but then has no further record or value, akin to a telephone call – while corporations behind these tools tend to focus on the media side, the lasting value of these traces which can be combined, mined and analysed for new insight and revenue generation. This paper seeks to explore this social media contradiction in two ways. Firstly, a cursory examination of Google and Facebook will demonstrate how data mining and analysis are core practices for these corporate giants, central to their functioning, development and expansion. Yet the public rhetoric of these companies is not about the exchange of personal information for services, but rather the more utopian notions of organising the world’s information, or bringing everyone together through sharing. The second section of this paper examines some of the core ramifications of death in terms of social media, asking what happens when a user suddenly exists only as recorded media fragments, at least in digital terms. Death, at first glance, renders users (or post-users) without agency or, implicitly, value to companies which data-mine ongoing social practices. Yet the emergence of digital legacy management highlights the value of the data generated using social media, a value which persists even after death. The question of a digital estate thus illustrates the cumulative value of social media as media, even on an individual level. The ways Facebook and Google approach digital death are examined, demonstrating policies which enshrine the agency and rights of living users, but become far less coherent posthumously. Finally, along with digital legacy management, I will examine the potential for posthumous digital legacies which may, in some macabre ways, actually reanimate some aspects of a deceased user’s presence, such as the Lives On service which touts the slogan “when your heart stops beating, you'll keep tweeting”. Cumulatively, mapping digital legacy management by large online corporations, and the affordances of more focussed services dealing with digital death, illustrates the value of data generated by social media users, and the continued importance of the data even beyond the grave. Google While Google is universally synonymous with search, and is the world’s dominant search engine, it is less widely understood that one of the core elements keeping Google’s search results relevant is a complex operation mining user data. Different tools in Google’s array of services mine data in different ways (Zimmer, “Gaze”). Gmail, for example, uses algorithms to analyse an individual’s email in order to display the most relevant related advertising. This form of data mining is comparatively well known, with most Gmail users knowingly and willingly accepting more personalised advertising in order to use Google’s email service. However, the majority of people using Google’s search engine are unaware that search, too, is increasingly driven by the tracking, analysis and refining of results on the basis of user activity (Zimmer, “Externalities”). As Alexander Halavais (160–180) quite rightly argues, recent focus on the idea of social search – the deeper integration of social network information in gauging search results – is oxymoronic; all search, at least for Google, is driven by deep analysis of personal and aggregated social data. Indeed, the success of Google’s mining of user data has led to concerns that often invisible processes of customisation and personalisation will mean that the supposedly independent or objective algorithms producing Google’s search results will actually yield a different result for every person. As Siva Vaidhyanathan laments: “as users in a diverse array of countries train Google’s algorithms to respond to specialized queries with localised results, each place in the world will have a different list of what is important, true, or ‘relevant’ in response to any query” (138). Personalisation and customisation are not inherently problematic, and frequently do enhance the relevance of search results, but the main objection raised by critics is not Google’s data mining, but the lack of transparency in the way data are recorded, stored and utilised. Eli Pariser, for example, laments the development of a ubiquitous “filter bubble” wherein all search results are personalised and subjective but are hidden behind the rhetoric of computer-driven algorithmic objectivity (Pariser). While data mining informs and drives many of Google’s tools and services, the cumulative value of these captured fragments of information is best demonstrated by the new service Google Now. Google Now is a mobile app which delivers an ongoing stream of search results but without the need for user input. Google Now extrapolates the rhythms of a person’s life, their interests and their routines in order to algorithmically determine what information will be needed next, and automatically displays it on a user’s mobile device. Clearly Google Now is an extremely valuable and clever tool, and the more information a user shares, the better the ongoing customised results will be, demonstrating the direct exchange value of personal data: total personalisation requires total transparency. Each individual user will need to judge whether they wish to share with Google the considerable amount of personal information needed to make Google Now work. The pressing ethical question that remains is whether Google will ensure that users are sufficiently aware of the amount of data and personal privacy they are exchanging in order to utilise such a service. Facebook Facebook began as a closed network, open only to students at American universities, but has transformed over time to a much wider and more open network, with over a billion registered users. Facebook has continually reinvented their interface, protocols and design, often altering both privacy policies and users’ experience of privacy, and often meeting significant and vocal resistance in the process (boyd). The data mining performed by social networking service Facebook is also extensive, although primarily aimed at refining the way that targeted advertising appears on the platform. In 2007 Facebook partnered with various retail loyalty services and combined these records with Facebook’s user data. This information was used to power Facebook’s Beacon service, which added details of users’ retail history to their Facebook news feed (for example, “Tama just purchased a HTC One”). The impact of all of these seemingly unrelated purchases turning up in many people’s feeds suddenly revealed the complex surveillance, data mining and sharing of these data that was taking place (Doyle and Fraser). However, as Beacon was turned on, without consultation, for all Facebook users, there was a sizable backlash that meant that Facebook had to initially switch the service to opt-in, and then discontinue it altogether. While Beacon has been long since erased, it is notable that in early 2013 Facebook announced that they have strengthened partnerships with data mining and profiling companies, including Datalogix, Epsilon, Acxiom, and BlueKai, which harness customer information from a range of loyalty cards, to further refine the targeting ability offered to advertisers using Facebook (Hof). Facebook’s data mining, surveillance and integration across companies is thus still going on, but no longer directly visible to Facebook users, except in terms of the targeted advertisements which appear on the service. Facebook is also a platform, providing a scaffolding and gateway to many other tools and services. In order to use social games such as Zynga’s Farmville, Facebook users agree to allow Zynga to access their profile information, and use Facebook to authenticate their identity. Zynga has been unashamedly at the forefront of user analytics and data mining, attempting to algorithmically determine the best way to make virtual goods within their games attractive enough for users to pay for them with real money. Indeed, during a conference presentation, Zynga Vice President Ken Rudin stated outright that Zynga is “an analytics company masquerading as a games company” (Rudin). I would contend that this masquerade succeeds, as few Farmville players are likely to consider how their every choice and activity is being algorithmically scrutinised in order to determine what virtual goods they might actually buy. As an instance of what is widely being called ‘big data’, the data miing operations of Facebook, Zynga and similar services lead to a range of ethical questions (boyd and Crawford). While users may have ostensibly agreed to this data mining after clicking on Facebook’s Terms of Use agreement, the fact that almost no one reads these agreements when signing up for a service is the Internet’s worst kept secret. Similarly, the extension of these terms when Facebook operates as a platform for other applications is a far from transparent process. While examining the recording of user data leads to questions of privacy and surveillance, it is important to note that many users are often aware of the exchange to which they have agreed. Anders Albrechtslund deploys the term ‘social surveillance’ to usefully emphasise the knowing, playful and at times subversive approach some users take to the surveillance and data mining practices of online service providers. Similarly, E.J. Westlake notes that performances of self online are often not only knowing but deliberately false or misleading with the aim of exploiting the ways online activities are tracked. However, even users well aware of Facebook’s data mining on the site itself may be less informed about the social networking company’s mining of offsite activity. The introduction of ‘like’ buttons on many other Websites extends Facebook’s reach considerably. The various social plugins and ‘like’ buttons expand both active recording of user activity (where the like button is actually clicked) and passive data mining (since a cookie is installed or updated regardless of whether a button is actually pressed) (Gerlitz and Helmond). Indeed, because cookies – tiny packets of data exchanged and updated invisibly in browsers – assign each user a unique identifier, Facebook can either combine these data with an existing user’s profile or create profiles about non-users. If that person even joins Facebook, their account is connected with the existing, data-mined record of their Web activities (Roosendaal). As with Google, the significant issue here is not users knowingly sharing their data with Facebook, but the often complete lack of transparency in terms of the ways Facebook extracts and mines user data, both on Facebook itself and increasingly across applications using Facebook as a platform and across the Web through social plugins. Google after Death While data mining is clearly a core element in the operation of Facebook and Google, the ability to scrutinise the activities of users depends on those users being active; when someone dies, the question of the value and ownership of their digital assets becomes complicated, as does the way companies manage posthumous user information. For Google, the Gmail account of a deceased person becomes inactive; the stored email still takes up space on Google’s servers, but with no one using the account, no advertising is displayed and thus Google can earn no revenue from the account. However, the process of accessing the Gmail account of a deceased relative is an incredibly laborious one. In order to even begin the process, Google asks that someone physically mails a series of documents including a photocopy of a government-issued ID, the death certificate of the deceased person, evidence of an email the requester received from the deceased, along with other personal information. After Google have received and verified this information, they state that they might proceed to a second stage where further documents are required. Moreover, if at any stage Google decide that they cannot proceed in releasing a deceased relative’s Gmail account, they will not reveal their rationale. As their support documentation states: “because of our concerns for user privacy, if we determine that we cannot provide the Gmail content, we will not be able to share further details about the account or discuss our decision” (Google, “Accessing”). Thus, Google appears to enshrine the rights and privacy of individual users, even posthumously; the ownership or transfer of individual digital assets after death is neither a given, nor enshrined in Google’s policies. Yet, ironically, the economic value of that email to Google is likely zero, but the value of the email history of a loved one or business partner may be of substantial financial and emotional value, probably more so than when that person was alive. For those left behind, the value of email accounts as media, as a lasting record of social communication, is heightened. The question of how Google manages posthumous user data has been further complicated by the company’s March 2012 rationalisation of over seventy separate privacy policies for various tools and services they operate under the umbrella of a single privacy policy accessed using a single unified Google account. While this move was ostensibly to make privacy more understandable and transparent at Google, it had other impacts. For example, one of the side effects of a singular privacy policy and single Google identity is that deleting one of a recently deceased person’s services may inadvertently delete them all. Given that Google’s services include Gmail, YouTube and Picasa, this means that deleting an email account inadvertently erases all of the Google-hosted videos and photographs that individual posted during their lifetime. As Google warns, for example: “if you delete the Google Account to which your YouTube account is linked, you will delete both the Google Account AND your YouTube account, including all videos and account data” (Google, “What Happens”). A relative having gained access to a deceased person’s Gmail might sensibly delete the email account once the desired information is exported. However, it seems less likely that this executor would realise that in doing so all of the private and public videos that person had posted on YouTube would also permanently disappear. While material possessions can be carefully dispersed to specific individuals following the instructions in someone’s will, such affordances are not yet available for Google users. While it is entirely understandable that the ramification of policy changes are aimed at living users, as more and more online users pass away, the question of their digital assets becomes increasingly important. Google, for example, might allow a deceased person’s executor to elect which of their Google services should be kept online (perhaps their YouTube videos), which traces can be exported (perhaps their email), and which services can be deleted. At present, the lack of fine-grained controls over a user’s digital estate at Google makes this almost impossible. While it violates Google’s policies to transfer ownership of an account to another person, if someone does leave their passwords behind, this provides their loved ones with the best options in managing their digital legacy with Google. When someone dies and their online legacy is a collection of media fragments, the value of those media is far more apparent to the loved ones left behind rather than the companies housing those media. Facebook Memorialisation In response to users complaining that Facebook was suggesting they reconnect with deceased friends who had left Facebook profiles behind, in 2009 the company instituted an official policy of turning the Facebook profiles of departed users into memorial pages (Kelly). Technically, loved ones can choose between memorialisation and erasing an account altogether, but memorialisation is the default. This entails setting the account so that no one can log into it, and that no new friends (connections) can be made. Existing friends can access the page in line with the user’s final privacy settings, meaning that most friends will be able to post on the memorialised profile to remember that person in various ways (Facebook). Memorialised profiles (now Timelines, after Facebook’s redesign) thus become potential mourning spaces for existing connections. Since memorialised pages cannot make new connections, public memorial pages are increasingly popular on Facebook, frequently set up after a high-profile death, often involving young people, accidents or murder. Recent studies suggest that both of these Facebook spaces are allowing new online forms of mourning to emerge (Marwick and Ellison; Carroll and Landry; Kern, Forman, and Gil-Egui), although public pages have the downside of potentially inappropriate commentary and outright trolling (Phillips). Given Facebook has over a billion registered users, estimates already suggest that the platform houses 30 million profiles of deceased people, and this number will, of course, continue to grow (Kaleem). For Facebook, while posthumous users do not generate data themselves, the fact that they were part of a network means that their connections may interact with a memorialised account, or memorial page, and this activity, like all Facebook activities, allows the platform to display advertising and further track user interactions. However, at present Facebook’s options – to memorialise or delete accounts of deceased people – are fairly blunt. Once Facebook is aware that a user has died, no one is allowed to edit that person’s Facebook account or Timeline, so Facebook literally offers an all (memorialisation) or nothing (deletion) option. Given that Facebook is essentially a platform for performing identities, it seems a little short-sighted that executors cannot clean up or otherwise edit the final, lasting profile of a deceased Facebook user. As social networking services and social media become more ingrained in contemporary mourning practices, it may be that Facebook will allow more fine-grained control, positioning a digital executor also as a posthumous curator, making the final decision about what does and does not get kept in the memorialisation process. Since Facebook is continually mining user activity, the popularity of mourning as an activity on Facebook will likely mean that more attention is paid to the question of digital legacies. While the user themselves can no longer be social, the social practices of mourning, and the recording of a user as a media entity highlights the fact that social media can be about interactions which in significant ways include deceased users. Digital Legacy Services While the largest online corporations have fairly blunt tools for addressing digital death, there are a number of new tools and niche services emerging in this area which are attempting to offer nuanced control over digital legacies. Legacy Locker, for example, offers to store the passwords to all of a user’s online services and accounts, from Facebook to Paypal, and to store important documents and other digital material. Users designate beneficiaries who will receive this information after the account holder passes away, and this is confirmed by preselected “verifiers” who can attest to the account holder’s death. Death Switch similarly provides the ability to store and send information to users after the account holder dies, but tests whether someone is alive by sending verification emails; fail to respond to several prompts and Death Switch will determine a user has died, or is incapacitated, and executes the user’s final instructions. Perpetu goes a step further and offers the same tools as Legacy Locker but also automates existing options from social media services, allowing users to specify, for example, that their Facebook, Twitter or Gmail data should be downloaded and this archive should be sent to a designated recipient when the Perpetu user dies. These tools attempt to provide a more complex array of choices in terms of managing a user’s digital legacy, providing similar choices to those currently available when addressing material possessions in a formal will. At a broader level, the growing demand for these services attests to the ongoing value of online accounts and social media traces after a user’s death. Bequeathing passwords may not strictly follow the Terms of Use of the online services in question, but it is extremely hard to track or intervene when a user has the legitimate password, even if used by someone else. More to the point, this finely-grained legacy management allows far more flexibility in the utilisation and curation of digital assets posthumously. In the process of signing up for one of these services, or digital legacy management more broadly, the ongoing value and longevity of social media traces becomes more obvious to both the user planning their estate and those who ultimately have to manage it. The Social Media Afterlife The value of social media beyond the grave is also evident in the range of services which allow users to communicate in some fashion after they have passed away. Dead Social, for example, allows users to schedule posthumous social media activity, including the posting of tweets, sending of email, Facebook messages, or the release of online photos and videos. The service relies on a trusted executor confirming someone’s death, and after that releases these final messages effectively from beyond the grave. If I Die is a similar service, which also has an integrated Facebook application which ensures a user’s final message is directly displayed on their Timeline. In a bizarre promotional campaign around a service called If I Die First, the company is promising that the first user of the service to pass away will have their posthumous message delivered to a huge online audience, via popular blogs and mainstream press coverage. While this is not likely to appeal to everyone, the notion of a popular posthumous performance of self further complicates that question of what social media can mean after death. Illustrating the value of social media legacies in a quite different but equally powerful way, the Lives On service purports to algorithmically learn how a person uses Twitter while they are live, and then continue to tweet in their name after death. Internet critic Evgeny Morozov argues that Lives On is part of a Silicon Valley ideology of ‘solutionism’ which casts every facet of society as a problem in need of a digital solution (Morozov). In this instance, Lives On provides some semblance of a solution to the problem of death. While far from defeating death, the very fact that it might be possible to produce any meaningful approximation of a living person’s social media after they die is powerful testimony to the value of data mining and the importance of recognising that value. While Lives On is an experimental service in its infancy, it is worth wondering what sort of posthumous approximation might be built using the robust data profiles held by Facebook or Google. If Google Now can extrapolate what a user wants to see without any additional input, how hard would it be to retool this service to post what a user would have wanted after their death? Could there, in effect, be a Google After(life)? Conclusion Users of social media services have differing levels of awareness regarding the exchange they are agreeing to when signing up for services provided by Google or Facebook, and often value the social affordances without necessarily considering the ongoing media they are creating. Online corporations, by contrast, recognise and harness the informatic traces users generate through complex data mining and analysis. However, the death of a social media user provides a moment of rupture which highlights the significant value of the media traces a user leaves behind. More to the point, the value of these media becomes most evident to those left behind precisely because that individual can no longer be social. While beginning to address the issue of posthumous user data, Google and Facebook both have very blunt tools; Google might offer executors access while Facebook provides the option of locking a deceased user’s account as a memorial or removing it altogether. Neither of these responses do justice to the value that these media traces hold for the living, but emerging digital legacy management tools are increasingly providing a richer set of options for digital executors. While the differences between material and digital assets provoke an array of legal, spiritual and moral issues, digital traces nevertheless clearly hold significant and demonstrable value. For social media users, the death of someone they know is often the moment where the media side of social media – their lasting, infinitely replicable nature – becomes more important, more visible, and casts the value of the social media accounts of the living in a new light. For the larger online corporations and service providers, the inevitable increase in deceased users will likely provoke more fine-grained controls and responses to the question of digital legacies and posthumous profiles. It is likely, too, that the increase in online social practices of mourning will open new spaces and arenas for those same corporate giants to analyse and data-mine. References Albrechtslund, Anders. “Online Social Networking as Participatory Surveillance.” First Monday 13.3 (2008). 21 Apr. 2013 ‹http://firstmonday.org/article/view/2142/1949›. boyd, danah. “Facebook’s Privacy Trainwreck: Exposure, Invasion, and Social Convergence.” Convergence 14.1 (2008): 13–20. ———, and Kate Crawford. “Critical Questions for Big Data.” Information, Communication & Society 15.5 (2012): 662–679. Carroll, Brian, and Katie Landry. “Logging On and Letting Out: Using Online Social Networks to Grieve and to Mourn.” Bulletin of Science, Technology & Society 30.5 (2010): 341–349. Doyle, Warwick, and Matthew Fraser. “Facebook, Surveillance and Power.” Facebook and Philosophy: What’s on Your Mind? Ed. D.E. Wittkower. Chicago, IL: Open Court, 2010. 215–230. Facebook. “Deactivating, Deleting & Memorializing Accounts.” Facebook Help Center. 2013. 7 Mar. 2013 ‹http://www.facebook.com/help/359046244166395/›. Gerlitz, Carolin, and Anne Helmond. “The Like Economy: Social Buttons and the Data-intensive Web.” New Media & Society (2013). Google. “Accessing a Deceased Person’s Mail.” 25 Jan. 2013. 21 Apr. 2013 ‹https://support.google.com/mail/answer/14300?hl=en›. ———. “What Happens to YouTube If I Delete My Google Account or Google+?” 8 Jan. 2013. 21 Apr. 2013 ‹http://support.google.com/youtube/bin/answer.py?hl=en&answer=69961&rd=1›. Halavais, Alexander. Search Engine Society. Polity, 2008. Hof, Robert. “Facebook Makes It Easier to Target Ads Based on Your Shopping History.” Forbes 27 Feb. 2013. 1 Mar. 2013 ‹http://www.forbes.com/sites/roberthof/2013/02/27/facebook-makes-it-easier-to-target-ads-based-on-your-shopping-history/›. Kaleem, Jaweed. “Death on Facebook Now Common as ‘Dead Profiles’ Create Vast Virtual Cemetery.” Huffington Post. 7 Dec. 2012. 7 Mar. 2013 ‹http://www.huffingtonpost.com/2012/12/07/death-facebook-dead-profiles_n_2245397.html›. Kelly, Max. “Memories of Friends Departed Endure on Facebook.” The Facebook Blog. 27 Oct. 2009. 7 Mar. 2013 ‹http://www.facebook.com/blog/blog.php?post=163091042130›. Kern, Rebecca, Abbe E. Forman, and Gisela Gil-Egui. “R.I.P.: Remain in Perpetuity. Facebook Memorial Pages.” Telematics and Informatics 30.1 (2012): 2–10. Marwick, Alice, and Nicole B. Ellison. “‘There Isn’t Wifi in Heaven!’ Negotiating Visibility on Facebook Memorial Pages.” Journal of Broadcasting & Electronic Media 56.3 (2012): 378–400. Morozov, Evgeny. “The Perils of Perfection.” The New York Times 2 Mar. 2013. 4 Mar. 2013 ‹http://www.nytimes.com/2013/03/03/opinion/sunday/the-perils-of-perfection.html?pagewanted=all&_r=0›. Pariser, Eli. The Filter Bubble: What the Internet Is Hiding from You. London: Viking, 2011. Phillips, Whitney. “LOLing at Tragedy: Facebook Trolls, Memorial Pages and Resistance to Grief Online.” First Monday 16.12 (2011). 21 Apr. 2013 ‹http://firstmonday.org/ojs/index.php/fm/article/view/3168›. Roosendaal, Arnold. “We Are All Connected to Facebook … by Facebook!” European Data Protection: In Good Health? Ed. Serge Gutwirth et al. Dordrecht: Springer, 2012. 3–19. Rudin, Ken. “Actionable Analytics at Zynga: Leveraging Big Data to Make Online Games More Fun and Social.” San Diego, CA, 2010. Vaidhyanathan, Siva. The Googlization of Everything. 1st ed. Berkeley: University of California Press, 2011. Westlake, E.J. “Friend Me If You Facebook: Generation Y and Performative Surveillance.” TDR: The Drama Review 52.4 (2008): 21–40. Zimmer, Michael. “The Externalities of Search 2.0: The Emerging Privacy Threats When the Drive for the Perfect Search Engine Meets Web 2.0.” First Monday 13.3 (2008). 21 Apr. 2013 ‹http://firstmonday.org/ojs/index.php/fm/article/view/2136/1944›. ———. “The Gaze of the Perfect Search Engine: Google as an Infrastructure of Dataveillance.” Web Search. Eds. Amanda Spink & Michael Zimmer. Berlin: Springer, 2008. 77–99.

The German anatomist and artist Gunther von Hagens’s exhibition Body Worlds has toured Europe, Asia and the US several times, provoking both interest and dismay, fascination and disgust. This “original exhibition of real human bodies” features whole cadavers as well as specific body parts and it is organized thematically around specific bodily functions such as the respiratory system, blood circulation, skeletal materials and brain and nervous system. In each segment of the exhibition these themes are illustrated using parts of the body, presented in glass cases that are associated with each function. Next to these cases are the full body cadavers—the so-called “plastinates”. The Body Worlds exhibition is all about perception-in-motion: it is about circumnavigating bodies, stopping in front of a plastinate and in-corporating it, leaning over an arm or reaching towards a face, pointing towards a discrete blood vessel, drawing an abstract line between two organs. Experiencing here is above all a matter of reaching-towards and incorporeally touching bodies (Manning, Politics of Touch). These bodies are dead, still, motionless, “frozen in time between death and decay” (von Hagens, Body Worlds). Dead and still eerily animate, just as the surface of a freeze-frame photograph would seem to capture spatially a movement in its unfolding becoming, plastinates do not simply appear as dead matter used to represent vitality, but rather [...] as persons who managed to survive together with their bodies. What “inner quality” makes them appear alive? In what way is someone present, when what is conserved is not opinions (in writing), actions (in stories) or voice (on tape) but the body? (Hirschauer 41—42) Through the corporeal transformation—the plastination process—that these bodies have gone through, and the designed space of the exhibition—a space that makes possible both innovative and restrictive movements—these seemingly dead bodies come alive. There is a movement within these bodies, a movement that resonates with-in the exhibition space and mobilises visitors.Two ways of thinking movement in relation to stillness come out of this. The first one is concerned with the ordering and designing of space by means of visual cues, things or texts. This relates to stillness and slowness as suggestive, imposed and enforced upon bodies so that the possibilities of movement are reduced due to the way an environment is designed. Think for example of the way that an escalator moulds movements and speeds, or how signs such as “No walking on the grass” suggest a given pattern of walking. The second one is concerned with how movement is linked up with and implies continuous change. If a body’s movement and exaltation is reduced or slowed down, does the body then become immobile and still? Take ice, water and steam: these states give expression to three different attributes or conditions of what is considered to be one and the same chemical body. But in the transformation from one to the other, there is also an incorporeal transformation related to the possibilities of movement and change—between motion and rest—of what a body can do (Deleuze, Spinoza).Slowing Down Ever since the first exhibition Body Worlds has been under attack from critics, ethicists, journalists and religious groups, who claim that the public exhibition of dead bodies should, for various reasons, be banned. In 2004, in response to such criticism, the Californian Science Centre commissioned an ethical review of the exhibition before taking the decision on whether and how to host Body Worlds. One of the more interesting points in this review was the proposition that “the exhibition is powerful, and guests need time to acclimate themselves” (6). As a consequence, it was suggested that the Science Center arrange an entrance that would “slow people down and foster a reverential and respectful mood” (5). The exhibition space was to be organized in such a way that skeletons, historical contexts and images would be placed in the beginning of the exhibition, the whole body plastinates should only be introduced later in the exhibition. Before my first visit to the exhibition, I wasn’t sure how I would react when confronted with these dead bodies. To be perfectly honest, the moments before entering, I panicked. Crossing the asphalt between the Manchester Museum of Science and the exhibition hall, I felt dizzy; heart pounding in my chest and a sensation of nausea spreading throughout my body. Ascending a staircase that would take me to the entrance, located on the third floor in the exhibition hall, I thought I had detected an odour—rotten flesh or foul meat mixed with chemicals. Upon entering I was greeted by a young man to whom I presented my ticket. Without knowing in advance that this first room had been structured in such a way as to “slow people down”, I immediately felt relieved as I realized that the previously detected smell must have been psychosomatic: the room was perfectly odourless and the atmosphere was calm and tempered. Dimmed lights and pointed spotlights filled the space with an inviting and warm ambience. Images and texts on death and anatomical art were spread over the walls and in the back corners of the room two skeletons had been placed. Two glass cases containing bones and tendons had been placed in the middle of the room and next to these a case with a whole body, positioned upright in ‘anatomically correct’ position with arms, hands and legs down. There was nothing gruesome or spectacular about this room; I had visited anatomical collections, such as that of the Hunterian Museum in London or Medical Museion in Copenhagen, which in comparison far surpassed the alleged gruesomeness and voyeurism. And so I realized that the room had effectively slowed me down as my initial state of exaltation had been altered and stalled by the relative familiarity of images, texts and bare bones, all presented in a tempered and respectful way.Visitors are slowed down, but they are not still. There is no degree zero of movement, only different relations of speeds and slowness. Here I think it is useful to think of movement and change as it is expressed in Henri Bergson’s writings on temporality. Bergson frequently argued that the problem of Western metaphysics had been to spatialise movement, as in the famous example with Zeno’s arrow that—given that we think of movement as spatial—never reaches the tree towards which it has been shot. Bergson however did not refute the importance and practical dimensions of thinking through immobility; rather, immobility is the “prerequisite for our action” (Creative Mind 120). The problem occurs when we think away movement on behalf of that which we think of as still or immobile.We need immobility, and the more we succeed in imagining movement as coinciding with the immobilities of the points of space through which it passes, the better we think we understand it. To tell the truth, there never is real immobility, if we understand by that an absence of movement. Movement is reality itself (Bergson, Creative Mind 119).This notion of movement as primary, and immobility as secondary, gives expression to the proposition that immobility, solids and stillness are not given but have to be achieved. This can be done in several ways: external forces that act upon a body and transform it, as when water crystallizes into ice; certain therapeutic practices—yoga or relaxation exercises—that focus and concentrate attention and perception; spatial and architectural designs such as museums, art galleries or churches that induce and invoke certain moods and slow people down. Obviously there are other kinds of situations when bodies become excited and start moving more rapidly. Such situations could be, to name a few, when water starts to boil; when people use drugs like nicotine or caffeine in order to heighten alertness; or when bodies occupy spaces where movement is amplified by means of increased sensual stimuli, for example in the extreme conditions that characterize a natural catastrophe or a war.Speeding Up After the Body Worlds visitor had been slowed down and acclimatised in and through the first room, the full body plastinates were introduced. These bodies laid bare muscles, tissues, nerves, brain, heart, kidneys, and lungs. Some of these were “exploded views” of the body—in these, the body and its parts have been separated and drawn out from the position that they occupy in the living body, in some cases resulting in two discrete plastinates—e.g. one skeleton and one muscle-plastinate—that come from the same anatomical body. Congruent with the renaissance anatomical art of Vesalius, all plastinates are positioned in lifelike poses (Benthien, Skin). Some are placed inside a protective glass case while others are either standing, lying on the ground or hanging from the ceiling.As the exhibition unfolds, the plastinates themselves wipe away the calmness and stillness intended with the spatial design. Whereas a skeleton seems mute and dumb these plastinates come alive as visitors circle and navigate between them. Most visitors would merely point and whisper, some would reach towards and lean over a plastinate. Others however noticed that jumping up and down created a resonating effect in the plastinates so that a plastinate’s hand, leg or arm moved. At times the rooms were literally filled with hordes of excited and energized school children. Then the exhibition space was overtaken with laughter, loud voices, running feet, comments about the gruesome von Hagens and repeated remarks on the plastinates’ genitalia. The former mood of respectfulness and reverence has been replaced by the fascinating and idiosyncratic presence of animated and still, plastinated bodies. Animated and still? So what is a plastinate?Movement and Form Through plastination, the body undergoes a radical and irreversible transformation which turns the organic body into an “inorganic organism”, a hybrid of plastic and flesh (Hirschauer 36). Before this happens however the living body has to face another phase of transition by which it turns into a dead cadaver. From the point of view of an individual body that lives, breathes and evolves, this transformation implies turning into a decomposing and rotting piece of flesh, tissue and bones. Any corpse will sooner or later turn into something else, ashes, dust or earth. This process can be slowed down using various techniques and chemicals such as mummification or formaldehyde, but this will merely slow down the process of decomposition, and not terminate it.The plastination technique is rather different in several respects. Firstly the specimen is soaked in acetone and the liquids in the corpse—water and fat—are displaced. This displacement prepares the specimen for the next step in the process which is the forced vacuum impregnation. Here the specimen is placed in a polymer mixture with silicone rubber or epoxy resin. This process is undertaken in vacuum which allows for the plastic to enter each and every cell of the specimen, thus replacing the acetone (von Hagens, Body Worlds). Later on, when this transformation has finished, the specimen is modelled according to a concept, a “gestalt plastinate”, such as “the runner”, “the badminton player” or “the skin man”. The concept expresses a dynamic and life-like pose—referred to as the gestalt—that exceeds the individual parts of which it is formed. This would suggest that form is in itself immobility and that perception is what is needed to make form mobile; as gestalt the plastinated body is spatially immobilised, yet it gives birth to a body that comes alive in perception-movement. Once again I think that Bergson could help us to think through this relation, a relation that is conceived here as a difference between form-as-stillness and formation-as-movement:Life is an evolution. We concentrate a period of this evolution in a stable view which we call a form, and, when the change has become considerable enough to overcome the fortunate inertia of our perception, we say that the body has changed its form. But in reality the body is changing form at every moment; or rather, there is no form, since form is immobile and the reality is movement. What is real is the continual change of form; form is only a snapshot view of a transition (Bergson, Creative Evolution 328, emphasis in original).In other words there is a form that is relative to human perception, but there is “underneath” this form nothing but a continuous formation or becoming as Bergson would have it. For our purposes the formation of the gestalt plastinate is an achievement that makes perceptible the possibility of divergent or co-existent durations; the plastinate belongs to a temporal rhythm that even though it coincides with ours is not identical to it.Movement and Trans-formation So what kind of a strange entity is it that emerges out of this transformation, through which organic materials are partly replaced with plastic? Compared with a living body or a mourned cadaver, it is first and foremost an entity that no longer is subject to the continuous evolution of time. In this sense the plastinate is similar to cryogenetical bodies (Doyle, Wetwares), or to Ötzi the ice man (Spindler, Man in the ice)—bodies that resist the temporal logic according to which things are in constant motion. The processes of composition and decomposition that every living organism undergoes at every instant have been radically interrupted.However, plastinates are not forever fixed, motionless and eternally enduring objects. As Walter points out, plastinated cadavers are expected to “remain stable” for approximately 4000 years (606). Thus, the plastinate has become solidified and stabilized according to a different pattern of duration than that of the decaying human body. There is a tension here between permanence and change, between bodies that endure and a body that decomposes. Maybe as when summer, which is full of life and energy, turns into winter, which is still and seemingly without life. It reminds us of Nietzsche's Zarathustra and the winter doctrine: When the water is spanned by planks, when bridges and railings leap over the river, verily those are believed who say, “everything is in flux. . .” But when the winter comes . . . , then verily, not only the blockheads say, “Does not everything stand still?” “At bottom everything stands still.”—that is truly a winter doctrine (Bennett and Connolly 150). So we encounter the paradox of how to accommodate motion within stillness and stillness within motion: if everything is in continuous movement, how can there be stillness and regularity (and vice versa)? An interesting example of such temporal interruption is described by Giorgio Agamben who invokes an example with a tick that was kept alive, in a state of hibernation, for 18 years without nourishment (47). During those years this tick had ceased to exist in time, it existed only in extended space. There are of course differences between the tick and von Hagens’s plastinates—one difference being that the plastinates are not only dead but also plastic and inorganic—but the analogy points us to the idea of producing the conditions of possibility for eternal, timeless (and, by implication, motionless) bodies. If movement and change are thought of as spatial, as in Zeno’s paradox, here they have become temporal: movement happens in and because of time and not in space. The technique of plastination and the plastinates themselves emerge as processes of a-temporalisation and re-spatialisation of the body. The body is displaced—pulled out of time and history—and becomes a Cartesian body located entirely in the coordinates of extended space. As Ian Hacking suggests, plastinates are “Cartesian, extended, occupying space. Plastinated organs and corpses are odourless: like the Cartesian body, they can be seen but not smelt” (15).Interestingly, Body Worlds purports to show the inner workings of the human body. However, what visitors experience is not the working but the being. They do not see what the body does, its activities over time; rather, they see what it is, in space. Conversely, von Hagens wishes to “make us aware of our physical nature, our nature within us” (Kuppers 127), but the nature that we become aware of is not the messy, smelly and fluid nature of bodily interiors. Rather we encounter the still nature of Zarathustra’s winter landscape, a landscape in which the passage of time has come to a halt. As Walter concludes “the Body Worlds experience is primarily visual, spatial, static and odourless” (619).Still in Constant MotionAnd yet...Body Worlds moves us. If not for the fact that these plastinates and their creator strike us as gruesome, horrific and controversial, then because these bodies that we encounter touch us and we them. The sensation of movement, in and through the exhibition, is about this tension between being struck, touched or moved by a body that is radically foreign and yet strangely familiar to us. The resonant and reverberating movement that connects us with it is expressed through that (in)ability to accommodate motion in stillness, and stillness in motion. For whereas the plastinates are immobilised in space, they move in time and in experience. As Nigel Thrift puts it The body is in constant motion. Even at rest, the body is never still. As bodies move they trace out a path from one location to another. These paths constantly intersect with those of others in a complex web of biographies. These others are not just human bodies but also all other objects that can be described as trajectories in time-space: animals, machines, trees, dwellings, and so on (Thrift 8).This understanding of the body as being in constant motion stretches beyond the idea of a body that literally moves in physical space; it stresses the processual intertwining of subjects and objects through space-times that are enduring and evolving. The paradoxical nature of the relation between bodies in motion and bodies at rest is obviously far from exhausted through the brief exemplification that I have tried to provide here. Therefore I must end here and let someone else, better suited for this task, explain what it is that I wish to have said. We are hardly conscious of anything metaphorical when we say of one picture or of a story that it is dead, and of another that it has life. To explain just what we mean when we say this, is not easy. Yet the consciousness that one thing is limp, that another one has the heavy inertness of inanimate things, while another seems to move from within arises spontaneously. There must be something in the object that instigates it (Dewey 182). References Agamben, Giorgio. The Open. Trans. Kevin Attell. Stanford: Stanford U P, 2004.Bennett, Jane, and William Connolly. “Contesting Nature/Culture.” Journal of Nietzsche Studies 24 (2002) 148-163.Benthien, Claudia. Skin: On the Cultural Border Between Self and the World. Trans. Thomas Dunlap. New York: Columbia U P, 2002. California Science Center. “Summary of Ethical Review.” 10 Jan. 2009.Bergson, Henri. The Creative Mind. Trans. Mabelle Andison. Mineola: Dover, 2007. –––. Creative Evolution. Trans. Arthur Mitchell. New York: Cosimo Classics, 2005Deleuze, Gilles. Spinoza: Practical Philosophy. Trans. Robert Hurley. San Francisco: City Lights, 1988.Dewey, John. Art as Experience. New York: Perigee, 2005.Doyle, Richard. Wetwares. Minnesota: Minnesota U P, 2003.Hacking, Ian. “The Cartesian Body.” Biosocieties 1 (2006) 13-15.Hirschauer, Stefan. “Animated Corpses: Communicating with Post Mortals in an Anatomical Exhibition.” Body & Society 12.4 (2006) 25-52.Kuppers, Petra. “Visions of Anatomy: Exhibitions and Dense Bodies.” differences 15.3 (2004) 123-156.Manning, Erin. Politics of Touch: Sense, Movement, Sovereignty. Minnesota: Minnesota UP, 2007. Spindler, Konrad. The Man in the Ice. London: Weidenfeld and Nicolson, 1994.Thrift, Nigel. Spatial Formations. London: Sage, 1996.Von Hagens, Gunther, and Angelina Whalley. Body Worlds: The Original Exhibition of Real Human Bodies. Heidelberg: Institute for Plastination, 2008.Walter, Tony. “Plastination for Display: A New Way to Dispose of the Dead.” Journal of the Royal Anthropological Institute 10.3 (2004) 603-627.

Introduction: Bubbles and Sport The ephemeral materiality of bubbles – beautiful, spectacular, and distracting but ultimately fragile – when applied to protect or conserve in the interests of sport-media profit, creates conditions that exacerbate existing inequalities in sport and society. Bubbles are usually something to watch, admire, and chase after in their brief yet shiny lives. There is supposed to be, technically, nothing inside them other than one or more gasses, and yet we constantly refer to people and objects being inside bubbles. The metaphor of the bubble has been used to describe the life of celebrities, politicians in purpose-built capital cities like Canberra, and even leftist, environmentally activist urban dwellers. The metaphorical and material qualities of bubbles are aligned—they cannot be easily captured and are liable to change at any time. In this article we address the metaphorical sporting bubble, which is often evoked in describing life in professional sport. This is a vernacular term used to capture and condemn the conditions of life of elite sportspeople (usually men), most commonly after there has been a sport-related scandal, especially of a sexual nature (Rowe). It is frequently paired with connotatively loaded adjectives like pampered and indulged. The sporting bubble is rarely interrogated in academic literature, the concept largely being left to the media and moral entrepreneurs. It is represented as involving a highly privileged but also pressurised life for those who live inside it. A sporting bubble is a world constructed for its most prized inhabitants that enables them to be protected from insurgents and to set the terms of their encounters with others, especially sport fans and disciplinary agents of the state. The Covid-19 pandemic both reinforced and reconfigured the operational concept of the bubble, re-arranging tensions between safety (protecting athletes) and fragility (short careers, risks of injury, etc.) for those within, while safeguarding those without from bubble contagion. Privilege and Precarity Bubble-induced social isolation, critics argue, encourages a loss of perspective among those under its protection, an entitled disconnection from the usual rules and responsibilities of everyday life. For this reason, the denizens of the sporting bubble are seen as being at risk to themselves and, more troublingly, to those allowed temporarily to penetrate it, especially young women who are first exploited by and then ejected from it (Benedict). There are many well-documented cases of professional male athletes “behaving badly” and trying to rely on institutional status and various versions of the sporting bubble for shelter (Flood and Dyson; Reel and Crouch; Wade). In the age of mobile and social media, it is increasingly difficult to keep misbehaviour in-house, resulting in a slew of media stories about, for example, drunkenness and sexual misconduct, such as when then-Sydney Roosters co-captain Mitchell Pearce was suspended and fined in 2016 after being filmed trying to force an unwanted kiss on a woman and then simulating a lewd act with her dog while drunk. There is contestation between those who condemn such behaviour as aberrant and those who regard it as the conventional expression of youthful masculinity as part of the familiar “boys will be boys” dictum. The latter naturalise an inequitable gender order, frequently treating sportsmen as victims of predatory women, and ignoring asymmetries of power between men and women, especially in homosocial environments (Toffoletti). For those in the sporting bubble (predominantly elite sportsmen and highly paid executives, also mostly men, with an array of service staff of both sexes moving in and out of it), life is reflected for those being protected via an array of screens (small screens in homes and indoor places of entertainment, and even smaller screens on theirs and others’ phones, as well as huge screens at sport events). These male sport stars are paid handsomely to use their skill and strength to perform for the sporting codes, their every facial expression and bodily action watched by the media and relayed to audiences. This is often a precarious existence, the usually brief career of an athlete worker being dependent on health, luck, age, successful competition with rivals, networks, and club and coach preferences. There is a large, aspirational reserve army of athletes vying to play at the elite level, despite risks of injury and invasive, life-changing medical interventions. Responsibility for avoiding performance and image enhancing drugs (PIEDs) also weighs heavily on their shoulders (Connor). Professional sportspeople, in their more reflective moments, know that their time in the limelight will soon be up, meaning that getting a ticket to the sporting bubble, even for a short time, can make all the difference to their post-sport lives and those of their families. The most vulnerable of the small minority of participants in sport who make a good, short-term living from it are those for whom, in the absence of quality education and prior social status, it is their sole likely means of upward social mobility (Spaaij). Elite sport performers are surrounded by minders, doctors, fitness instructors, therapists, coaches, advisors and other service personnel, all supporting athletes to stay focussed on and maximise performance quality to satisfy co-present crowds, broadcasters, sponsors, sports bodies and mass media audiences. The shield offered by the sporting bubble supports the teleological win-at-all-costs mentality of professional sport. The stakes are high, with athlete and executive salaries, sponsorships and broadcasting deals entangled in a complex web of investments in keeping the “talent” pivotal to the “attention economy” (Davenport and Beck)—the players that provide the content for sale—in top form. Yet, the bubble cannot be entirely secured and poor behaviour or performance can have devastating effects, including permanent injury or disability, mental illness and loss of reputation (Rowe, “Scandals and Sport”). Given this fragile materiality of the sporting bubble, it is striking that, in response to the sudden shutdown following the economic and health crisis caused by the 2020 global pandemic, the leaders of professional sport decided to create more of them and seek to seal the metaphorical and material space with unprecedented efficiency. The outcome was a multi-sided tale of mobility, confinement, capital, labour, and the gendering of sport and society. The Covid-19 Gilded Cage Sociologists such as Zygmunt Bauman and John Urry have analysed the socio-politics of mobilities, whereby some people in the world, such as tourists, can traverse the globe at their leisure, while others remain fixed in geographical space because they lack the means to be mobile or, in contrast, are involuntarily displaced by war, so-called “ethnic cleansing”, famine, poverty or environmental degradation. The Covid-19 global pandemic re-framed these matters of mobilities (Rowe, “Subjecting Pandemic Sport”), with conventional moving around—between houses, businesses, cities, regions and countries—suddenly subjected to the imperative to be static and, in perniciously unreflective technocratic discourse, “socially distanced” (when what was actually meant was to be “physically distanced”). The late-twentieth century analysis of the “risk society” by Ulrich Beck, in which the mysterious consequences of humans’ predation on their environment are visited upon them with terrifying force, was dramatically realised with the coming of Covid-19. In another iteration of the metaphor, it burst the bubble of twenty-first century global sport. What we today call sport was formed through the process of sportisation (Maguire), whereby hyper-local, folk physical play was reconfigured as multi-spatial industrialised sport in modernity, becoming increasingly reliant on individual athletes and teams travelling across the landscape and well over the horizon. Co-present crowds were, in turn, overshadowed in the sport economy when sport events were taken to much larger, dispersed audiences via the media, especially in broadcast mode (Nicholson, Kerr, and Sherwood). This lucrative mediation of professional sport, though, came with an unforgiving obligation to generate an uninterrupted supply of spectacular live sport content. The pandemic closed down most sports events and those that did take place lacked the crucial participation of the co-present crowd to provide the requisite event atmosphere demanded by those viewers accustomed to a sense of occasion. Instead, they received a strange spectacle of sport performers operating in empty “cathedrals”, often with a “faked” crowd presence. The mediated sport spectacle under the pandemic involved cardboard cut-out and sex doll spectators, Zoom images of fans on large screens, and sampled sounds of the crowd recycled from sport video games. Confected co-presence produced simulacra of the “real” as Baudrillardian visions came to life. The sporting bubble had become even more remote. For elite sportspeople routinely isolated from the “common people”, the live sport encounter offered some sensory experience of the social – the sounds, sights and even smells of the crowd. Now the sporting bubble closed in on an already insulated and insular existence. It exposed the irony of the bubble as a sign of both privileged mobility and incarcerated athlete work, both refuge and prison. Its logic of contagion also turned a structure intended to protect those inside from those outside into, as already observed, a mechanism to manage the threat of insiders to outsiders. In Australia, as in many other countries, the populace was enjoined by governments and health authorities to help prevent the spread of Covid-19 through isolation and immobility. There were various exceptions, principally those classified as essential workers, a heterogeneous cohort ranging from supermarket shelf stackers to pharmacists. People in the cultural, leisure and sports industries, including musicians, actors, and athletes, were not counted among this crucial labour force. Indeed, the performing arts (including dance, theatre and music) were put on ice with quite devastating effects on the livelihoods and wellbeing of those involved. So, with all major sports shut down (the exception being horse racing, which received the benefit both of government subsidies and expanding online gambling revenue), sport organisations began to represent themselves as essential services that could help sustain collective mental and even spiritual wellbeing. This case was made most aggressively by Australian Rugby League Commission Chairman, Peter V’landys, in contending that “an Australia without rugby league is not Australia”. In similar vein, prominent sport and media figure Phil Gould insisted, when describing rugby league fans in Western Sydney’s Penrith, “they’re lost, because the football’s not on … . It holds their families together. People don’t understand that … . Their life begins in the second week of March, and it ends in October”. Despite misgivings about public safety and equality before the pandemic regime, sporting bubbles were allowed to form, re-form and circulate. The indefinite shutdown of the National Rugby League (NRL) on 23 March 2020 was followed after negotiation between multiple entities by its reopening on 28 May 2020. The competition included a team from another nation-state (the Warriors from Aotearoa/New Zealand) in creating an international sporting bubble on the Central Coast of New South Wales, separating them from their families and friends across the Tasman Sea. Appeals to the mental health of fans and the importance of the NRL to myths of “Australianness” notwithstanding, the league had not prudently maintained a financial reserve and so could not afford to shut down for long. Significant gambling revenue for leagues like the NRL and Australian Football League (AFL) also influenced the push to return to sport business as usual. Sport contests were needed in order to exploit the gambling opportunities – especially online and mobile – stimulated by home “confinement”. During the coronavirus lockdowns, Australians’ weekly spending on gambling went up by 142 per cent, and the NRL earned significantly more than usual from gambling revenue—potentially $10 million above forecasts for 2020. Despite the clear financial imperative at play, including heavy reliance on gambling, sporting bubble-making involved special licence. The state of Queensland, which had pursued a hard-line approach by closing its borders for most of those wishing to cross them for biographical landmark events like family funerals and even for medical treatment in border communities, became “the nation's sporting hub”. Queensland became the home of most teams of the men’s AFL (notably the women’s AFLW season having been cancelled) following a large Covid-19 second wave in Melbourne. The women’s National Netball League was based exclusively in Queensland. This state, which for the first time hosted the AFL Grand Final, deployed sport as a tool in both national sports tourism marketing and internal pre-election politics, sponsoring a documentary, The Sporting Bubble 2020, via its Tourism and Events arm. While Queensland became the larger bubble incorporating many other sporting bubbles, both the AFL and the NRL had versions of the “fly in, fly out” labour rhythms conventionally associated with the mining industry in remote and regional areas. In this instance, though, the bubble experience did not involve long stays in miners’ camps or even the one-night hotel stopovers familiar to the popular music and sport industries. Here, the bubble moved, usually by plane, to fulfil the requirements of a live sport “gig”, whereupon it was immediately returned to its more solid bubble hub or to domestic self-isolation. In the space created between disciplined expectation and deplored non-compliance, the sporting bubble inevitably became the scrutinised object and subject of scandal. Sporting Bubble Scandals While people with a very low risk of spreading Covid-19 (coming from areas with no active cases) were denied entry to Queensland for even the most serious of reasons (for example, the death of a child), images of AFL players and their families socialising and enjoying swimming at the Royal Pines Resort sporting bubble crossed our screens. Yet, despite their (players’, officials’ and families’) relative privilege and freedom of movement under the AFL Covid-Safe Plan, some players and others inside the bubble were involved in “scandals”. Most notable was the case of a drunken brawl outside a Gold Coast strip club which led to two Richmond players being “banished”, suspended for 10 matches, and the club fined $100,000. But it was not only players who breached Covid-19 bubble protocols: Collingwood coaches Nathan Buckley and Brenton Sanderson paid the $50,000 fine imposed on the club for playing tennis in Perth outside their bubble, while Richmond was fined $45,000 after Brooke Cotchin, wife of team captain Trent, posted an image to Instagram of a Gold Coast day spa that she had visited outside the “hub” (the institutionally preferred term for bubble). She was subsequently distressed after being trolled. Also of concern was the lack of physical distancing, and the range of people allowed into the sporting bubble, including babysitters, grandparents, and swimming coaches (for children). There were other cases of players being caught leaving the bubble to attend parties and sharing videos of their “antics” on social media. Biosecurity breaches of bubbles by players occurred relatively frequently, with stern words from both the AFL and NRL leaders (and their clubs) and fines accumulating in the thousands of dollars. Some people were also caught sneaking into bubbles, with Lekahni Pearce, the girlfriend of Swans player Elijah Taylor, stating that it was easy in Perth, “no security, I didn’t see a security guard” (in Barron, Stevens, and Zaczek) (a month later, outside the bubble, they had broken up and he pled guilty to unlawfully assaulting her; Ramsey). Flouting the rules, despite stern threats from government, did not lead to any bubble being popped. The sport-media machine powering sporting bubbles continued to run, the attendant emotional or health risks accepted in the name of national cultural therapy, while sponsorship, advertising and gambling revenue continued to accumulate mostly for the benefit of men. Gendering Sporting Bubbles Designed as biosecurity structures to maintain the supply of media-sport content, keep players and other vital cogs of the machine running smoothly, and to exclude Covid-19, sporting bubbles were, in their most advanced form, exclusive luxury camps that illuminated the elevated socio-cultural status of sportsmen. The ongoing inequalities between men’s and women’s sport in Australia and around the world were clearly in evidence, as well as the politics of gender whereby women are obliged to “care” and men are enabled to be “careless” – or at least to manage carefully their “duty of care”. In Australia, the only sport for women that continued during the height of the Covid-19 lockdown was netball, which operated in a bubble that was one of sacrifice rather than privilege. With minimum salaries of only $30,000 – significantly less than the lowest-paid “rookies” in the AFL – and some being mothers of small children and/or with professional jobs juggled alongside their netball careers, these elite sportswomen wanted to continue to play despite the personal inconvenience or cost (Pavlidis). Not one breach of the netballers out of the bubble was reported, indicating that they took their responsibilities with appropriate seriousness and, perhaps, were subjected to less scrutiny than the sportsmen accustomed to attracting front-page headlines. National Netball League (also known after its Queensland-based naming rights sponsor as Suncorp Super Netball) players could be regarded as fortunate to have the opportunity to be in a bubble and to participate in their competition. The NRL Women’s (NRLW) Premiership season was also completed, but only involved four teams subject to fly in, fly out and bubble arrangements, and being played in so-called curtain-raiser games for the NRL. As noted earlier, the AFLW season was truncated, despite all the prior training and sacrifice required of its players. Similarly, because of their resource advantages, the UK men’s and boy’s top six tiers of association football were allowed to continue during lockdown, compared to only two for women and girls. In the United States, inequalities between men’s and women’s sports were clearly demonstrated by the conditions afforded to those elite sportswomen inside the Women’s National Basketball Association (WNBA) sport bubble in the IMG Academy in Florida. Players shared photos of rodent traps in their rooms, insect traps under their mattresses, inedible food and blocked plumbing in their bubble accommodation. These conditions were a far cry from the luxury usually afforded elite sportsmen, including in Florida’s Walt Disney World for the men’s NBA, and is just one of the many instances of how gendered inequality was both reproduced and exacerbated by Covid-19. Bursting the Bubble As we have seen, governments and corporate leaders in sport were able to create material and metaphorical bubbles during the Covid-19 lockdown in order to transmit stadium sport contests into home spaces. The rationale was the importance of sport to national identity, belonging and the routines and rhythms of life. But for whom? Many women, who still carry the major responsibilities of “care”, found that Covid-19 intensified the affective relations and gendered inequities of “home” as a leisure site (Fullagar and Pavlidis). Rates of domestic violence surged, and many women experienced significant anxiety and depression related to the stress of home confinement and home schooling. During the pandemic, women were also more likely to experience the stress and trauma of being first responders, witnessing virus-related sickness and death as the majority of nurses and care workers. They also bore the brunt of much of the economic and employment loss during this time. Also, as noted above, livelihoods in the arts and cultural sector did not receive the benefits of the “bubble”, despite having a comparable claim to sport in contributing significantly to societal wellbeing. This sector’s workforce is substantially female, although men dominate its senior roles. Despite these inequalities, after the late March to May hiatus, many elite male sportsmen – and some sportswomen - operated in a bubble. Moving in and out of them was not easy. Life inside could be mentally stressful (especially in long stays of up to 150 days in sports like cricket), and tabloid and social media troll punishment awaited those who were caught going “over the fence”. But, life in the sporting bubble was generally preferable to the daily realities of those afflicted by the trauma arising from forced home confinement, and for whom watching moving sports images was scant compensation for compulsory immobility. The ethical foundation of the sparkly, ephemeral fantasy of the sporting bubble is questionable when it is placed in the service of a voracious “media sports cultural complex” (Rowe, Global Media Sport) that consumes sport labour power and rolls back progress in gender relations as a default response to a global pandemic. Covid-19 dramatically highlighted social inequalities in many areas of life, including medical care, work, and sport. For the small minority of people involved in sport who are elite professionals, the only thing worse than being in a sporting bubble during the pandemic was not being in one, as being outside precluded their participation. Being inside the bubble was a privilege, albeit a dubious one. But, as in wider society, not all sporting bubbles are created equal. Some are more opulent than others, and the experiences of the supporting and the supported can be very different. The surface of the sporting bubble may be impermanent, but when its interior is opened up to scrutiny, it reveals some very durable structures of inequality. Bubbles are made to burst. They are, by nature, temporary, translucent structures created as spectacles. As a form of luminosity, bubbles “allow a thing or object to exist only as a flash, sparkle or shimmer” (Deleuze, 52). In echoing Deleuze, Angela McRobbie (54) argues that luminosity “softens and disguises the regulative dynamics of neoliberal society”. The sporting bubble was designed to discharge that function for those millions rendered immobile by home confinement legislation in Australia and around the world, who were having to deal with the associated trauma, risk and disadvantage. 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The main goal of this diploma thesis was to create web applications for issuer, verifier and revocation authority of revocable keyed-verification anonymous credentials system. Applications created in this thesis provide functions for all tasks, that are performed by each entity. Using these applications a global management of RKVAC system is possible. Authentication module created in verifier’s app is universaly usable for access control to any web service. Both issuer’s and revocation authority’s app are compatible with whole RKVAC system and are therefor applicable as central elements of systems.

Web services are self-contained, self-describing modular applications. Different from traditional distributed computing, Web services are more dynamic on its ser-vice discovery and run-time binding mechanism. As big numbers of Web services appear on the Web, Web services discovery mechanism becomes essential. This chapter provides an in-depth discussion on works about Web services discovery. We first present some basis knowledge for the Web services discovery. After that we introduce some value-added services for the Web services discovery, such as the quality of service (QoS)-aware services discovery and semantics-aware service discovery. Since nonfunctional attributes, especially the QoS information, are quite important for mission critical tasks, we finally present our Semantic Web-based solution for QoS-aware service discovery and measurement. It complements Web ontology language-service (OWL-S) to achieve better services discovery, composition and measurement.

Abstract The surface roughness of as produced additively manufactured (AM) components is very high and may lead to component failure and undesirable coefficients of friction. In rough surfaces, small cracks form at regions of high surface roughness acting as a stress raiser or crack nucleation sites. Likewise, rough surfaces impact both static and kinetic friction that can impede desired motion and oppose desired mechanical forces. For using these components in many applications, it is necessary to reduce surface deviations drastically during postprocessing. For parts with complex geometries and enormous internal surface areas, this reduction presents a complex engineering problem. We have explored chempolishing (C) and electropolishing (E) to reduce the external and internal surface roughness of stainless-steel components in our previous studies. Chempolishing is an electroless etching process that can uniformly smoothen the accessible surfaces of complex AM components. Electropolishing can produce an extremely smooth surface to sub-micrometer level roughness. Our prior work showed that chempolishing and electropolishing produced very distinct surface microstructures. It is quite possible that in future surface finishing, chempolishing and electropolishing may be applied on the same AM component to reduce the surface roughness of complex AM components. The resulting microstructure after the sequential application of chempolishing and electropolishing may be quite different as compared to that of after chempolishing or electropolishing alone. Here, we report the application of altering the sequence of chempolishing and electropolishing to reduce the external and internal surface roughness of 316 steel components. It is unknown what will be the impact of manipulating the sequence of electropolishing and chemical polishing on surface roughness and microstructure of AM materials. This paper focuses on the post-process sequencing of chempolishing, followed by electropolishing (CE) and vice versa (EC). We found chempolishing followed by electropolishing reduced internal surface roughness by as much as 12 micrometers. Whereas the electropolishing followed by chempolishing reduced external surface roughness by an average of ∼15 micrometers. The structure and properties of the surface finished pieces were examined using: Scanning Electron Microscopy (SEM), Surface Profilometry, and Water Contact Angle Measurement. SEM provided direct insight that CE and EC process produced significantly different microstructures from each other and also from chempolished and electropolished processes. Water contact angle measurements performed on CE, and EC treated AM samples showed that surface energy was quite different. Hence, CE and EC are expected to perform quite differently under a corrosive environment and also yield various adhesion quality for the protective coatings. Confirmation of structural changes provided in this experiment shed light on the capabilities of postprocessing improvements we can make to materials performance.