Circum-Arctic lithosphere-basin evolution : An overview

Acknowledgements The Special Issue editors thank the contributors for their hard work and dedication in the preparation of the papers presented here, and also Victoria Pease for her active support throughout the process and in particular in co-convening the conference session giving rise to this Special Issue. In particular, we thank the Editor-in-chief, Dr. Rob Govers for his patience, guidance and valued advice throughout the process. Also, we appreciate the work of the Tectonophysics editorial and production teams for bringing the Special Issue to print. R. Ernst, G. Oakey and an anonymous reviewer provided a multitude of helpful suggestions to improve the manuscript. This Special Issue is a contribution to the Geological Survey of Canada's Geomapping for Energy and Minerals (GEM2) Program, Canada's Extended Continental Shelf Program, and the Circum-Arctic Lithosphere Evolution (CALE) network. ESS Contribution No. 20160152.Peer reviewedPostprin

Rethinking Immersive Audio

Musical experiences are often described as or aspire to be immersive. Immersive audio is seen as an innovative frontier of music, sometimes encompassing other cutting edge technologies such as Virtual Reality (VR) and Dolby Atmos. However, conceptions of immersion remain reductive and simplistic. Through exploring how immersion is conceptualised in other domains, I interrogate the limits of immersive audio, and argue for a model of immersion that critically considers interactivity and participation. This draws on Small’s concept of musicking (1998) and Csikszentmihalyi’s notion of flow (2013). Immersive audio generally means multichannel audio, involving multiple speakers (or rendered through headphones to appear as such). Immersion becomes a technical challenge solved by more or better configured speakers and ever more realistic spatialising algorithms. Historically, discourses dating back to the very earliest days of stereophonic and multichannel audio have often privileged a “sweet spot” for an immobile but attentive listener (Grajeda, 2015). However, I argue that immersion emerges not from being in an idealised listener position but through being an active participant. Immersive experiences are not limited to sound, and within fields including heritage studies, gaming and theatre, experiences are often sold as being immersive. Scholarly literature in these domains interrogates the nature of this immersion and brings forth valuable perspectives. In her discussion of immersive heritage experiences, Kidd (2018) detaches immersion from technology and notes that “any and all heritage might potentially be understood as immersive.” For Kidd, key characteristics of immersive experiences include being “story-led, audience and participation centered, multimodal, multisensory and attuned to its environment.” Discussing immersion in video games, Collins (2013, p. 141) argues that rather than viewing the game as a separate space that players enter and are immersed in - as when one enters a concert hall - immersion emerges from interaction with the game. Van Elferen’s (2016) ALI model for analysing immersion in game music reveals how musical affect, literacy and interaction all play roles. As Bucher (2017) writes, immersion is “less about telling the viewer a story and more about letting the viewer discover the story.” Through exploring varying ideas of immersion we problematise this oft-used phrase and propose a model for immersion that considers interaction, affect and participation. References Bucher, J. 2017. Storytelling for Virtual Reality: Methods and Principles. New York and Oxon: Routledge. Collins, K., 2013. Playing with sound: a theory of interacting with sound and music in video games. MIT press. Csikszentmihalyi, M., 2013. Flow: The psychology of happiness. Random House. Grajeda, T. 2015. “The “Sweet Spot”: The Technology of Stereo and the Field of Auditorship” in Théberge, P., Devine, K., and Everrett, T (eds.) Living Stereo : Histories and Cultures of Multichannel Sound. Bloomsbury Academic. Kidd, J., 2018.” 'Immersive' heritage encounters”. The Museum Review, 3(1). Small, C. 1998. Musicking: The meanings of performing and listening. Wesleyan University Press. Van Elferen, I. 2016 "Analyzing game musical immersion: the ALI model." in Kamp, M., Summers, T., and Sweeney, M. (eds.) Ludomusicology: approaches to video game music. Equinox

Rethinking Immersion

This presentation proposes that our understanding of immersive audio and how to create immersive sonic experiences might be enriched by looking at how different disciplines have defined “immersive”. We will primarily be drawing on theatre, heritage and gaming. We consider the key facets of immersion that researchers and practitioners working in these disciplines have proposed, and interrogate how insights from these disciplines may give us new and productive ways to think about immersive audio. We propose that reflecting on sound practices by way of these cross-disciplinary insights can give us novel ways of approaching immersive sonic experiences

Role of venture capital and startup co-evolution in entrepreneurial ecosystems:case Stockholm

Abstract. The topic of this thesis is role of venture capital and startup co-evolution in entrepreneurial ecosystems. Among the reasons for the topic selection are the importance of high-growth entrepreneurship for the economy. Even though the importance is widely acknowledged, the researchers and practioners have issues in recognising why certain areas gives certain results. Therefore, this study collected, analysed and utilised literature on entrepreneurial ecosystems and generational units, collective memories and identities. The reason for this selection was made to understand entrepreneurial ecosystems and how the actors in the ecosystem shape it during and after the emergence process. The study utilised qualitative research design as its methodological choice. An extensive case study was conducted. The selection to utilise case study research was made, because it enables to understand complex and historical processes, hence the methodological choice was well aligned with the purpose of the study. The integration of entrepreneurial ecosystems and generational units’ literature was found to be relevant theoretical choice, because the study was able to show that the main actors (Venture capitalists and startups) have significant role in transforming the suitable conditions into concrete high-growth ventures. The results of the study propose that the characteristics of an ecosystem develops over time as an outcome of the interplay between actors and context

Arp 220 - IC 4553/4: understanding the system and diagnosing the ISM

Arp220 is a nearby system in final stages of galaxy merger with powerful ongoing star-formation at and surrounding the two nuclei. Arp 220 was detected in HI absorption and OH Megamaser emission and later recognized as the nearest ultra-luminous infrared galaxy also showing powerful molecular and X-ray emissions. In this paper we review the available radio and mm-wave observational data of Arp 220 in order to obtain an integrated picture of the dense interstellar medium that forms the location of the powerful star-formation at the two nuclei.Comment: 9 pages, 4 figures, to appear in: IAU Symposium 242 Astrophysical Masers and their Environment

Policy Shifts in the Massachusetts Response to Family Homelessness

Massachusetts\u27s response to the tragedy of family homelessness during a period of economic prosperity (1983-1987) is contrasted to a period of economic decline (1988-1992). The article describes the movement toward a structural response in the boom years and its dismantling with the emergence of a blame the victim response in the decline years. The roles of state government, advocacy groups, human service providers, private funding sources, academic institutions, and the media, as they influence these responses, are outlined. Interviews with key actors in these groups, group interviews with formerly homeless women, a review of the literature, and the authors\u27 direct experience in the field provide concrete evidence from which conclusions are drawn

The Certainty of Uncertainty: Understanding and Exploiting Probability-Based Aviation Weather Products

Probability-based weather forecasts (i.e., forecasts that quantify uncertainty) have been available for certain weather elements for over 40 years; for example, the probability of precipitation forecast. More recently, probability forecasts designed specifically for aviation have become widely available on the internet through two National Weather Service (NWS) forecast centers, the Aviation Weather Center (AWC) and the Environmental Modeling Center (EMC). Although these probability-based products are generally not recognized by the Federal Aviation Administration (FAA) for operational use, their potential is beginning to be recognized by the aviation community. For example, the Joint Program Development Office (JPDO) Next Generation Air Transportation System (NEXTGEN) Air Traffic Management (ATM)-Weather Integration Plan cites probabilistic forecasts as playing a key role in future air traffic management decision support tools by the year 2023 (JPDO, 2010). Specifically, the JPDO identified the integration of weather uncertainty information (i.e., probabilities and confidence information) into decision-support tools as the highest of four levels of weather integration into the air traffic management system

Quantifying the Effects of Humidity on Density Altitude Calculations for Professional Aviation Education

The effects of humidity on density altitude are quantified in detail and graphically represented as a function of temperature and dew-point temperature for ease of use in professional aviation education. A ten-year climatology of dew-point temperatures for various representative locations throughout the United States is created to provide a basis for comparison and use with the graphical displays. Density altitude is demonstrated to be a function only of dew-point temperature for a given pressure altitude. The absolute errors between density altitude calculations that incorporate humidity to those that do not are combined with linear regression techniques to create a simple rule of thumb for diagnosing the impact of humidity on density altitude. The rule of thumb for the correction (in feet) is simply twenty times the dew-point temperature in Celsius, or colloquially, “double the dew point and add a zero.” This rule of thumb is shown to limit the percent error in density-altitude calculations to within five percent for the range of dew-point temperatures between 5°C to 30°C and elevations below 6,000 compared to over 20 percent for the same conditions using the dry case alone. The effect of humidity is also shown to create larger absolute errors in density-altitude calculations for the same dew-point temperature at higher pressure altitudes; however, the percent error decreases quickly with pressure altitude

Diagnosis of major cancer resection specimens with virtual slides: Impact of a novel digital pathology workstation

Digital pathology promises a number of benefits in efficiency in surgical pathology, yet the longer time required to review a virtual slide than a glass slide currently represents a significant barrier to the routine use of digital pathology. We aimed to create a novel workstation that enables pathologists to view a case as quickly as on the conventional microscope. The Leeds Virtual Microscope (LVM) was evaluated using a mixed factorial experimental design. Twelve consultant pathologists took part, each viewing one long cancer case (12-25 slides) on the LVM and one on a conventional microscope. Total time taken and diagnostic confidence were similar for the microscope and LVM, as was the mean slide viewing time. On the LVM, participants spent a significantly greater proportion of the total task time viewing slides and revisited slides more often. The unique design of the LVM, enabling real-time rendering of virtual slides while providing users with a quick and intuitive way to navigate within and between slides, makes use of digital pathology in routine practice a realistic possibility. With further practice with the system, diagnostic efficiency on the LVM is likely to increase yet more

Safe use of symbols in handover documentation for medical teams

Concern has been reported about the safe use of medical abbreviations in documents such as handover sheets and medical notes, especially when information is being communicated between staff of different specialties (BBC 2008, Sheppard et al. 2008). This article describes a study to investigate whether the use of symbols in handover documentation that is shared within and between multidisciplinary teams (MDTs) has similar safety implications. We asked 19 healthcare professionals from a range of specialties to identify 45 different combinations of 38 individual symbols. The symbols and combinations of symbols were extracted from 102 handover sheets taken from 6 different healthcare contexts in 4 London hospitals. Three symbols proposed in Microsoft's Common User Interface guidelines for alert symbols were also included. Results reveal that while some symbols are well understood, many others are either ambiguous or unknown. These results have implications for the safe use of symbols in medical documents, including paper and electronic handover documents and Electronic Patient Records (EPRs), especially where teams comprise individuals from different professional backgrounds, i.e. MDTs. We offer initial suggestions for standardisation and further research