16,356 research outputs found

    When do we stop digging? Conditions on a fundamental theory of physics

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    In seeking an answer to the question of what it means for a theory to be fundamental, it is enlightening to ask why the current best theories of physics are not generally believed to be fundamental. This reveals a set of conditions that a theory of physics must satisfy in order to be considered fundamental. Physics aspires to describe ever deeper levels of reality, which may be without end. Ultimately, at any stage we may not be able to tell whether we've reached rock bottom, or even if there is a base level – nevertheless, I draft a checklist to help us identify when to stop digging, in the case where we may have reached a candidate for a final theory. Given that the list is – according to (current) mainstream belief in high-energy physics – complete, and each criterion well-motivated, I argue that a physical theory that satisfies all the criteria can be assumed to be fundamental in the absence of evidence to the contrary (i.e., I argue that the necessary conditions are jointly sufficient for a claim of fundamentality in physics)

    Strategic application of events

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    This paper explores the area of strategy and events through a qualitative study. Organisations are increasingly seeking to achieve strategic objectives though the delivery of events. Particularly, as regards the role of events in the communication of brand strategy. This paper seeks to illuminate the underpinning reasoning for this trend, and examine prevalent issues relating to event management and event experience. There is a critical evaluation of the factors that facilitate and constrain events in supporting organisational strategy, with a number of themes identified that impede events from realising their strategic potential

    Marketing space : a conceptual framework for marketing events

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    Despite the growing resonance of events within the marketing domain, they continue to receive scant coverage in academic literature, and remain a poor relation to other forms of marketing communication. This detracts from them realising their potential as a relevant and pervasive marketing delivery method. Couched between the authors previous and future (ongoing) empirical work in this area, this article provides much needed conceptual development. The paper introduces the core construct of ‘marketing space’ and associated framework. Marketing space represents the distinctive environment a marketing event creates, which is unlike that cultivated by other communication methods. Marketing space is a transient reality where representatives of an organisation come together physically, and in a planned manner, with a gathering of existing and future customer’s, clients, and wider stakeholders. Marketing events are a grouping that comprises a wide and rich variety of event types, which can be termed ‘marketing event platforms’. These range from the largest of congresses or trade shows, to the smallest and most intimate of seminars or hospitality events. The conceptual framework of marketing space, with associated concepts provides the basis of a new lexicon for practitioners and academics interested in, and utilising, events for marketing purpose. The paper also explores the rationale for the growing resonance of marketing events; examining the characteristics of events, including experiential, interactive, targeted, and relational. The paper ends with the introduction of two dichotomies to the lexicon of marketing events’ direct and indirect events, and exclusive and non exclusive events

    What is the point of reduction in science?

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    The numerous and diverse roles of theory reduction in science have been insufficiently explored in the philosophy literature on reduction. Part of the reason for this has been a lack of attention paid to reduction2 (successional reduction)---although I here argue that this sense of reduction is closer to reduction1 (explanatory reduction) than is commonly recognised, and I use an account of reduction that is neutral between the two. This paper draws attention to the utility---and incredible versatility---of theory reduction. A non-exhaustive list of various applications of reduction in science is presented, some of which are drawn from a particular case-study, being the current search for a new theory of fundamental physics. This case-study is especially interesting because it employs both senses of reduction at once, and because of the huge weight being put on reduction by the different research groups involved; additionally, it presents some unique uses for reduction---revealing, I argue, the fact that reduction can be of specialised and unexpected service in particular scientific cases. The paper makes two other general findings: that the functions of reduction that are typically assumed to characterise the different forms of the relation may instead be understood as secondary consequences of some other roles; and that most of the roles that reduction plays in science can actually also be fulfilled by a weaker relation than (the typical understanding of) reduction

    Ubiquitous computing and knowledge management

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    MOBIlearn is a large European research project to develop a mobile learning system to facilitate formal, non formal and informal learning. The project has two primary objectives: • Develop a methodology for creating mobile learning scenarios and producing learning objects to implement them. • Develop the technology to deliver the learning objects to users via mobile computing devices. This paper will concentrate the MOBIlearn health care domain. One of this applications main objectives is managing and sharing of tacit knowledge. Using the system participants discuss case studies and alternative approaches to specific problems are evaluated and documented. This is then used and extended in future case studies. In a mobile learning environment, individual health workers can use the system to either advanced their skills, or in a ‘live’ incident, use it for reference and indeed call for backup.</p

    Out of Control: Patients Are Unwittingly Subjected to Enormous, Unfair, Out-of-Network "Balance Bills"

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    Excessive medical debt resulting from the provision of health care can cause families and individuals to spend down their savings, forego medical treatment, and even go without paying for food and heat. In the United States, medical bills are the leading cause of individual and family bankruptcy. In 1981, only 8 percent of families filing for bankruptcy protection did so in the aftermath of receiving medical care.However, by 2007, more than 62 percent of all bankruptcies were linked to a medical event, according to a study published in the American Journal of Medicine. And bankruptcy was not limited to the uninsured. To the contrary, the study reported that more than 75 percent of filers had health insurance.One driver of excessive health care bills is a practice known as "balance billing," which refers to bills for the difference between the amount that an insurance company is willing to pay for treatment and a provider's total charges. Providers who are not members of a patient's insurance network have charged patients as much as 9,000 percent of what Medicare would have paid for the same procedure.In contrast, payment for in-network medical services is on average 123 percent of Medicare.Patients can be subjected to balance bills despite making their best efforts to avoid them. For instance, they might receive care at an in-network facility, only to find out later that an out-of-network doctor also provided medical services. This is because many doctors work at hospitals rather than for hospitals, and are not members of the same insurance network as the hospital.Solutions are possible at both the federal and state levels that would protect consumers from balance bills without unduly burdening providers or insurers, or upsetting the existing system of insurance networks. This paper outlines policies that have been implemented at each of these levels and proposes additional protections at the federal level

    Inter-theory Relations in Quantum Gravity: Correspondence, Reduction and Emergence

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    Relationships between current theories, and relationships between current theories and the sought theory of quantum gravity (QG), play an essential role in motivating the need for QG, aiding the search for QG, and defining what would count as QG. Correspondence is the broad class of inter-theory relationships intended to demonstrate the necessary compatibility of two theories whose domains of validity overlap, in the overlap regions. The variety of roles that correspondence plays in the search for QG are illustrated, using examples from specific QG approaches. Reduction is argued to be a special case of correspondence, and to form part of the definition of QG. Finally, the appropriate account of emergence in the context of QG is presented, and compared to conceptions of emergence in the broader philosophy literature. It is argued that, while emergence is likely to hold between QG and general relativity, emergence is not part of the definition of QG, and nor can it serve usefully in the development and justification of the new theory

    Wolf-Rayet content of the Milky Way

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    An overview of the known Wolf-Rayet (WR) population of the Milky Way is presented, including a brief overview of historical catalogues and recent advances based on infrared photometric and spectroscopic observations resulting in the current census of 642 (v1.13 online catalogue). The observed distribution of WR stars is considered with respect to known star clusters, given that <20% of WR stars in the disk are located in clusters. WN stars outnumber WC stars at all galactocentric radii, while early-type WC stars are strongly biased against the inner Milky Way. Finally, recent estimates of the global WR population in the Milky Way are reassessed, with 1,200+/-100 estimated, such that the current census may be 50% complete. A characteristic WR lifetime of 0.25 Myr is inferred for an initial mass threshold of 25 Msun.Comment: 5 pages, 5 figures, to appear in proceedings of International Workshop on Wolf-Rayet Stars (editors W.-R. Hamann, A. Sander, and H. Todt, publisher Universit\"atsverlag Potsdam
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