Properties of Cosmological Filaments extracted from Eulerian Simulations

Using a new parallel algorithm implemented within the VisIt framework, we analysed large cosmological grid simulations to study the properties of baryons in filaments. The procedure allows us to build large catalogues with up to $\sim 3 \cdot 10^4$ filaments per simulated volume and to investigate the properties of cosmic filaments for very large volumes at high resolution (up to $300^3 ~\rm Mpc^3$ simulated with $2048^3$ cells). We determined scaling relations for the mass, volume, length and temperature of filaments and compared them to those of galaxy clusters. The longest filaments have a total length of about $200 ~\rm Mpc$ with a mass of several $10^{15} M_{\odot}$. We also investigated the effects of different gas physics. Radiative cooling significantly modifies the thermal properties of the warm-hot-intergalactic medium of filaments, mainly by lowering their mean temperature via line cooling. On the other hand, powerful feedback from active galactic nuclei in surrounding halos can heat up the gas in filaments. The impact of shock-accelerated cosmic rays from diffusive shock acceleration on filaments is small and the ratio of between cosmic ray and gas pressure within filaments is of the order of $\sim 10-20$ percent.Comment: 27 pages, 24 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society Main Journa

Reinventing the book: exploring the affordances of digital media to (re)tell stories and expand storyworlds

A thesis submitted to the University of Bedfordshire, in fulfilment of the requirements for the degree of Professional Doctorate in Journalism, Media, Television and CinemaThe focus of this thesis is on analysing the affordances of new technologies of the book. It looks at the transition between the affordances of the material book and the digital, focusing on the formal aspects of the book and its digital production and consumption. The research uses a coreperiphery model to locate innovation, looking first at a range of practices and then at selected producers and artefacts to identify relevant uses of the affordances of digital media, namely participation, co-creation, online reading communities, and the potential for cross-media extension of stories into other forms. The analyses of selected digital artefacts evaluate their strengths and weaknesses and ask: how have the affordances of the digital medium been used? What do these affordances offer to producers and consumers? And how have certain affordances changed the use value, the pleasures and the suitability of texts for their intended functions? This evaluation takes into account professional publishing contexts and a range of practices, looking at the ways in which producers make, classify and present their works. Affordances theory is used throughout, and ultimately shows that good design practices reinvent the medium, push the boundaries of the book, whilst considering the habits, needs and expectations of readers/users. A practice-led project is subject to analysis and reflection on practice in order to draw further insights and recommend approaches and tools for designers, publishers and other producers. This project experimented with reader engagement and co-creation to adapt the Nature Mage fantasy book series (Duncan Pile, 2011, 2013, 2014, 2016) onto enhanced digital book and digital game texts. Media-specificity is used as a framework to look at the ways in which stories can be translated and expanded onto new forms that explore the affordances of digital media. The adaptations are located at the intersection of media, shaped by a range of intertexts from both analogue and digital media, and offering not simply another way of enjoying the narrative but texts that explore the digital affordances also to design features that relate to ludic, creative and social motivations and pleasures. Ultimately the thesis revisits the very definition of the book, its functions, its value and the ways in which emerging digital artefacts are doing the work of books and — thanks to new affordances and their hybrid nature — are not only changing the experience of reading, but also mixing it with the work of other media forms and genres. In doing so, this thesis contributes to furthering professional practice by highlighting a range of uses of the affordances of the digital medium to reinvent the book in the next chapter of its evolution

On Suggesting Entities as Web Search Queries

The Web of Data is growing in popularity and dimension, and named entity exploitation is gaining importance in many research fields. In this paper, we explore the use of entities that can be extracted from a query log to enhance query recommendation. In particular, we extend a state-of-the-art recommendation algorithm to take into account the semantic information associated with submitted queries. Our novel method generates highly related and diversified suggestions that we as- sess by means of a new evaluation technique. The manually annotated dataset used for performance comparisons has been made available to the research community to favor the repeatability of experiments

Back to the Future: Mismatched Unrelated Donor, Haploidentical Related Donor, or Unrelated Umbilical Cord Blood Transplantation?

n/

Thermodynamic analysis of direct expansion configurations for electricity production by LNG cold energy recovery

In the present paper, after a brief review of the perspectives of the various schemes proposed for electricity generation from the regasification of Liquefied Natural Gas (LNG), a detailed analysis of two particular direct expansion solutions is proposed. The purpose is to identify the upper level of the energy that can be recovered with the aim of electricity production, using configurations with direct expansion. The analysis developed resorting to a simplified thermodynamic model, shows that using a direct expansion configurations with multistage turbine, values of power production typical of optimized ORC plant configurations (120 kJ for each kg of natural gas that flows through the plant) can be obtained. The development of a direct expansion plant with multistage turbine and internal heat recovery systems could permit to approach the production of more than 160 kJ for each kg of flowing liquefied natural gas. Considering values of the mass flow rate typical of LNG gas stations (e.g. 70 kg/s); this corresponds to an output power ranging between 8.3 MW and 11.4 MW

Religiosity Associated with Prolonged Survival in Liver Transplant Recipients

We tested the hypothesis that religiosity (ie, seeking God\u27s help, having faith in God, trusting in God, and trying to perceive God\u27s will in the disease) is associated with improved survival in patients with end-stage liver disease who have undergone orthotopic liver transplantation. We studied a group of 179 candidates for liver transplantation who responded to a questionnaire on religiosity during the pretransplant psychological evaluation and underwent transplantation between 2004 and 2007. The demographic data, educational level, employment status, clinical data, and results of the questionnaire were compared with the survival of patients during follow-up, regardless of the cause of any deaths. Factorial analysis of responses to the questionnaire revealed 3 main factors: searching for God (active), waiting for God (passive), and fatalism. The consistency of the matrix was very high (consistency index ? 0.92). Eighteen patients died during follow-up (median time ? 21 months). In multivariate analysis, only the searching for God factor [hazard ratio (HR) ? 2.95, 95% confidence interval (CI) ? 1.05-8.32, v2 ? 4.205, P ? 0.040] and the posttransplant length of stay in the intensive care unit (HR ? 1.05, 95% CI ? 1.01-1.08, v2 ? 8.506, P ? 0.035) were independently associated with survival, even after adjustments for the waiting for God factor, fatalism, age, sex, marital status, employment, educational level, viral etiology, Child-Pugh score, serum creatinine level, time from the questionnaire to transplantation, donor age, and intraoperative bleeding. Patients who did not present the searching for God factor were younger than those who did, but they had shorter survival times (P ? 0.037) and a 3-fold increased relative risk of dying (HR ? 3.01, 95% CI ? 1.07-8.45). In conclusion, religiosity is associated with prolonged survival in patients undergoing liver transplantation. Liver Transpl 16:1158-1163, 2010. VC 2010 AASLD

An agent solution to flexible planning and scheduling of passenger trips

In a highly competitive market, BT1 faces tough challenges as a service provider for telecommunication solutions. A proactive approach to the management of its resources is absolutely mandatory for its success. In this paper, an AI-based planning system for the management of parts of BT’s field force is presented. FieldPlan provides resource managers with full visibility of supply and demand, offers extensive what-if analysis capabilities and thus supports an effective decision making process.IFIP International Conference on Artificial Intelligence in Theory and Practice - Industrial Applications of AIRed de Universidades con Carreras en Informática (RedUNCI

Discovering Europeana users’ search behavior

Europeana is a strategic project funded by the European Commission with the goal of making Europe's cultural and scientific heritage accessible to the public. ASSETS is a two-year Best Practice Network co-funded by the CIP PSP Programme to improve performance, accessibility and usability of the Europeana search engine. Here we present a characterization of the Europeana logs by showing statistics on common behavioural patterns of the Europeana users