2,942 research outputs found

    Objective probability and quantum fuzziness

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    This paper offers a critique of the Bayesian interpretation of quantum mechanics with particular focus on a paper by Caves, Fuchs, and Schack containing a critique of the "objective preparations view" or OPV. It also aims to carry the discussion beyond the hardened positions of Bayesians and proponents of the OPV. Several claims made by Caves et al. are rebutted, including the claim that different pure states may legitimately be assigned to the same system at the same time, and the claim that the quantum nature of a preparation device cannot legitimately be ignored. Both Bayesians and proponents of the OPV regard the time dependence of a quantum state as the continuous dependence on time of an evolving state of some kind. This leads to a false dilemma: quantum states are either objective states of nature or subjective states of belief. In reality they are neither. The present paper views the aforesaid dependence as a dependence on the time of the measurement to whose possible outcomes the quantum state serves to assign probabilities. This makes it possible to recognize the full implications of the only testable feature of the theory, viz., the probabilities it assigns to measurement outcomes...Comment: 21 pages, no graphics, inspired by "Subjective probability and quantum certainty" (quant-ph/0608190 v2

    Autonomic physiological data associated with simulator discomfort

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    The development of a physiological monitoring capability for the Army's advanced helicopter simulator facility is reported. Additionally, preliminary physiological data is presented. Our objective was to demonstrate the sensitivity of physiological measures in this simulator to self-reported simulator sickness. The data suggested that heart period, hypergastria, and skin conductance level were more sensitive to simulator sickness than were vagal tone and normal electrogastric activity

    A New Genus of Agathidinae with the Description of a New Species Parasitic on \u3cem\u3eSamea Multiplicalis\u3c/em\u3e (Guenée)

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    A new genus of Agathidinae (Hymenoptera, Braconidae), Neothlipsis, is proposed to include 10 species. Nine of these species were formerly included in the polyphyletic genus Therophilus Wesmael 1837, formerly referred to as Bassus. A new species, Neothlipsis parysae, parasitic on Samea multiplicalis (Guenée), is described. The ten described species transferred to Neothlipsis are:, Neothlipsis agathoides, comb. n. for Bassus agathoides Newton and Sharkey 2000; Neothlipsis agilis, comb. n. for Bassus agilis Cresson 1868; Neothlipsis brevicauda, comb. n. for Bassus brevicaudus Muesebeck 1932; Neothlipsis californica, comb. n. for Bassus californicus Muesebeck 1927; Neothlipsis cincta, comb. n. for Microdus cinctus Cresson 1873; Neothlipsis coleophorae, comb. n. for Bassus coleophorae Rowher 1915; Neothlipsis discolor, comb. n. for Microdus discolor Cresson 1873; Neothlipsis nigricoxa, comb. n. for Microdus nigricoxus Provancher 1886; Neothlipsis petiolate, comb. n. for Bassus petiolatus Muesebeck 1932; Neothlipsis taeniativentris, comb. n. for Microdus taeniativentris Enderlein 1920. Phylogenetic analyses support the sister relationship between the new genus and Camptothlipsis. The type material of the new species is deposited at the Hymenoptera Institute Collection at the University of Kentucky, the United States National Museum, the Florida State Collection of Arthropods, and the Louisiana State Arthropod Museum

    Should we welcome robot teachers?

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    Abstract Current uses of robots in classrooms are reviewed and used to characterise four scenarios: (s1) Robot as Classroom Teacher; (s2) Robot as Companion and Peer; (s3) Robot as Care-eliciting Companion; and (s4) Telepresence Robot Teacher. The main ethical concerns associated with robot teachers are identified as: privacy; attachment, deception, and loss of human contact; and control and accountability. These are discussed in terms of the four identified scenarios. It is argued that classroom robots are likely to impact children’s’ privacy, especially when they masquerade as their friends and companions, when sensors are used to measure children’s responses, and when records are kept. Social robots designed to appear as if they understand and care for humans necessarily involve some deception (itself a complex notion), and could increase the risk of reduced human contact. Children could form attachments to robot companions (s2 and s3), or robot teachers (s1) and this could have a deleterious effect on their social development. There are also concerns about the ability, and use of robots to control or make decisions about children’s behaviour in the classroom. It is concluded that there are good reasons not to welcome fully fledged robot teachers (s1), and that robot companions (s2 and 3) should be given a cautious welcome at best. The limited circumstances in which robots could be used in the classroom to improve the human condition by offering otherwise unavailable educational experiences are discussed

    A framework for understanding the contributions of local residents to protected area law enforcement

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    Terrestrial and marine protected areas have long been championed as an approach to biodiversity conservation. For protected areas to be effective, equitable and inclusive, the involvement of local residents in their management and governance is considered important. Globally, there are many approaches to involving local residents in protected area law enforcement. However, opportunities for comparing different approaches have been limited by the lack of a clear common framework for analysis. To support a more holistic understanding, we present a framework for analysing the contributions of local residents to protected area law enforcement. Informed by a review of the literature and discussions with conservation practitioners, the framework comprises five key dimensions: (1) the different points in the enforcement system at which local residents are involved, (2) the nature of local participation in decision-making, (3) the type of external support provided to local residents, (4) the different motivating forces for participation, and (5) the extent to which local participation is formalized. We apply the framework to three real-world case studies to demonstrate its use in analysing and comparing the characteristics of different approaches. We suggest this framework could be used to examine variation in local participation within the enforcement system, inform evaluation and frame constructive discussions between relevant stakeholders. With the global coverage of protected areas likely to increase, the framework provides a foundation for better understanding the contributions of local residents to protected area law enforcement
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