In this paper we investigate the effect of level of understanding revealed by feedback in the form of clarification requests from a route follower on a route giver’s spatial perspective choice in their response in route instruction dialogues. In an experiment varying the level of understanding displayed by route follower clarification requests (the independent variable), route giver perspective switching in response to this feedback is investigated. Three levels of understanding displayed by feedback are investigated: (1) low-level clarification requests indicating that (...) the instruction was not processed, (2) semantic-level clarification requests indicating that the spatial direction given in the instruction could not be resolved as the speaker of the clarification request could not interpret which perspective was intended, and (3) high-level feedback which indicates that the route giver’s instruction was understood but which note an obstacle to following the instruction. Results show that perspective choice, which is a conceptual feature of language use, is sensitive to perceived level of addressee understanding. We found that route givers consistently switch perspectives in responding to semantic-level clarification requests but not in response to low-level ones, and also that switching occurs more for high-level feedback than for low-level feedback. We address how dialogue systems can take advantage of these findings by modelling our results in an Information State model of dialogue, presenting update rules for response generation which account for our findings and also update rules which enable generation of the feedback themselves. (shrink)

In this paper we investigate the effect of level of understanding revealed by feedback in the form of clarification requests from a route follower on a route giver’s spatial perspective choice in their response in route instruction dialogues. In an experiment varying the level of understanding displayed by route follower clarification requests, route giver perspective switching in response to this feedback is investigated. Three levels of understanding displayed by feedback are investigated: low-level clarification requests indicating that the instruction was not (...) processed, semantic-level clarification requests indicating that the spatial direction given in the instruction could not be resolved as the speaker of the clarification request could not interpret which perspective was intended, and high-level feedback which indicates that the route giver’s instruction was understood but which note an obstacle to following the instruction. Results show that perspective choice, which is a conceptual feature of language use, is sensitive to perceived level of addressee understanding. We found that route givers consistently switch perspectives in responding to semantic-level clarification requests but not in response to low-level ones, and also that switching occurs more for high-level feedback than for low-level feedback. We address how dialogue systems can take advantage of these findings by modelling our results in an Information State model of dialogue, presenting update rules for response generation which account for our findings and also update rules which enable generation of the feedback themselves. (shrink)

In this paper we provide a formal analysis of the idea of normative co-ordination. We argue that this idea is based on the assumption that agents can achieve flexible co-ordination by conferring normative positions to other agents. These positions include duties, permissions, and powers. In particular, we explain the idea of declarative power, which consists in the capacity of the power-holder of creating normative positions, involving other agents, simply by proclaiming such positions. In addition, we account also for the concepts (...) of representation, namely the representatives capacity of acting in the name of his principal, and of mandate, which is the mandatees duty to act as the mandator has requested. Finally, we show how the framework can be applied to represent the contract-net protocol. Some brief remarks on future research and applications conclude this contribution. (shrink)

During the evolution of aerobic life, antioxidant defence systems developed that either directly prevent oxidative modifications of the cellular constituents or remove the modified components. An example of the latter is the proteasome, which removes cytosolic oxidised proteins. Recently, a novel mechanism of activation of the nuclear 20S proteasome was discovered: automodified poly‐(ADP‐ribose) polymerase‐1 (PARP‐1) activates the proteasome to facilitate selective degradation of oxidatively damaged histones. Since activation of the PARP‐1 itself is induced by DNA damage and is supposed to (...) play a role in DNA repair, these new results suggest a joint role of PARP‐1 in the removal of oxidised nucleoproteins and in DNA repair. We hypothesise that PARP‐1 could provide a co‐ordinative link between two nuclear antioxidant defence systems, whose concerted activation would produce a fast and efficient restoration of the native chromatin structure following oxidative stress. BioEssays 24:1060–1065, 2002. © 2002 Wiley‐Periodicals, Inc. (shrink)

This article provides a detailed comparison between two systems of collapsing functions. These functions play a crucial role in proof theory, in the analysis of patterns of resemblance, and the analysis of maximal order types of well partial orders. The exact correspondence given here serves as a starting point for far reaching extensions of current results on patterns and well partial orders. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Student performance and its evaluation remain a serious challenge for education systems. Frequently, the recording and processing of students’ scores in a specific curriculum have several flaws for various reasons. In this context, the absence of data from some of the student scores undermines the efficiency of any future analysis carried out in order to reach conclusions. When this is the case, missing data imputation algorithms are needed. These algorithms are capable of substituting, with a high level of accuracy, the (...) missing data for predicted values. This research presents the hybridization of an algorithm previously proposed by the authors called adaptive assignation algorithm, with a well-known technique called multivariate imputation by chained equations. The results show how the suggested methodology outperforms both algorithms. (shrink)

Aberrations introduced by the atmospheric turbulence in large telescopes are compensated using adaptive optics systems, where the use of deformable mirrors and multiple sensors relies on complex control systems. Recently, the development of larger scales of telescopes as the E-ELT or TMT has created a computational challenge due to the increasing complexity of the new adaptive optics systems. The Complex Atmospheric Reconstructor based on Machine Learning is an algorithm based on artificial neural networks, designed to compensate the atmospheric turbulence. During (...) recent years, the use of GPUs has been proved to be a great solution to speed up the learning process of neural networks, and different frameworks have been created to ease their development. The implementation of CARMEN in different Multi-GPU frameworks is presented in this paper, along with its development in a language originally developed for GPU, like CUDA. This implementation offers the best response for all the presented cases, although its advantage of using more than one GPU occurs only in large networks. (shrink)

Einstein, in his “Zur Elektrodynamik bewegter Körper”, gave a physical (operational) meaning to “time” of a remote event in describing “motion” by introducing the concept of “synchronous stationary clocks located at different places”. But with regard to “place” in describing motion, he assumed without analysis the concept of a system of co-ordinates.In the present paper, we propose a way of giving physical (operational) meaning to the concepts of “place” and “co-ordinate system”, and show how the observer can (...) define both the place and time of a remote event. Following Einstein, we consider another system “in uniform motion of translation relatively to the former”. Without assuming “the properties of homogeneity which we attribute to space and time”, we show that the definitions of space and time in the two systems are linearly related. We deduce some novel consequences of our approach regarding faster-than-light observers and particles, “one-way” and “two-way” velocities of light, symmetry, the “group property” of inertial reference frames, length contraction and time dilatation, and the “twin paradox”. Finally, we point out a flaw in Einstein’s argument in the “Electrodynamical Part” of his paper and show that the Lorentz force formula and Einstein’s formula for transformation of field quantities are mutually consistent. We show that for faster-than-light bodies, a simple modification of Planck’s formula for mass suffices. (Except for the reference to Planck’s formula, we restrict ourselves to Physics of 1905.). (shrink)

In an earlier paper by the author, Åqvist , I presented an approach to the logic of historical necessity, or inevitability, in the sense of a “two-dimensional” combination of tense and modal logic for worlds, or histories, with the same time order, known as T × W logic. Distinctive features of that approach were, apart from its two-dimensionality, its being based on discrete and finite time, and its use of so-called systematic frame constants in order to enable us to indicate (...) longitudes and latitudes of any points in the co-ordinate systems under consideration. This led us to study and axiomatize an infinite hierarchy HTWxy of two-dimensional modal tense logics with the characteristic operators for historical necessity and possibility added to the original basic vocabulary. The main purpose of the present paper is then twofold: to extend the logics HTWxy to the interesting branch of philosophical logic constituted by deontic logic as combined with tense logic; and to deal with a curious puzzle known as the so-called epistemic obligation paradox – a well known stumbling-block in this area of research in philosophical logic. We argue for a solution to both these problems, which appeals to a new infinite hierarchy DHTWxym of extensions of the HTWxy in the sense of logics combining dyadic deontic modalities with temporal ones such as those for historical necessity and other two-dimensional modalities. (shrink)

In this paper we describe an approach to practical reasoning, reasoning about what it is best for a particular agent to do in a given situation, based on presumptive justifications of action through the instantiation of an argument scheme, which is then subject to examination through a series of critical questions. We identify three particular aspects of practical reasoning which distinguish it from theoretical reasoning. We next provide an argument scheme and an associated set of critical questions which is able (...) to capture these features. In order that both the argument scheme and the critical questions can be given precise interpretations we use the semantic structure of an Action-Based Alternating Transition System as the basis for their definition. We then work through a detailed example to show how this approach to practical reasoning can be applied to a problem solving situation, and briefly describe some other previous applications of the general approach. In a second example we relate our account to the social laws paradigm for co-ordinating multi-agent systems. The contribution of the paper is to provide firm foundations for an approach to practical reasoning based on presumptive argument in terms of a well-known model for representing the effects of actions of a group of agents. (shrink)

Every educational system requires some kind of management and control. This is particularly true in the case of occupational education and dual apprenticeship. Nevertheless, the didactical value and the overall success of such kind of educational systems can vary considerably. Any educational system, any system of apprenticeship requires either some kind of coordination or some kind of co-operation. In Germany, despite the fact that there is a lot of rumors about the importance of cooperation for over a (...) decade by now, the well-known dual system of vocational education is firmly grounded on the management principle of co-ordination. The control of the system ‘by plans’ apparently has proved to be the most adequate approach to its organization and management structures. Starting from the idea of a duality which is characterized by its didactical dimension, the set of qualities needed for this purpose can be illustrated by following the logic of different didactical approaches in vocational education. (shrink)

In "'Yes" and "No'" (2000), Ian Rumfitt proposed bilateralism--a use-based account of the logical words, according to which the sense of a sentence is determined by the conditions under which it is asserted and denied. One of Rumfitt's key claims is that bilateralism can provide a justification of classical logic. This paper raises a techical problem for Rumfitt's proposal, one that seems to undermine the bilateralist programme.

I explain why Fernando Ferreira's interesting formal result does not threaten the bilateralist account of the sense of the connectives.

Scientific method is presented not as a means for investigating a true and objective character of universal reality, but as a metaphorical tool applied for mutual co-ordination of experiences. By acknowledging the co-orientational and metaphoric roots of science, religion, arts, and ordinary linguistic communications alike, potential for their fruitful interdependent application becomes apparent. References to the paradigms of constructivism and objectivism are drawn in parallel in outlining the tracks along which the proposed concept of co-creation of experiential qualities is arrived (...) at. Systemic reasoning based on analogies between different levels of complexity of natural systems emanates as an imaginative aspect of creative thinking. (shrink)

The concept of co‐ordination problems helps solve the problem of authority and obligation in legal theory, but only if the concept is carefully distinguished from the game‐theoretical concept of co‐ordination problems and their solutions. After explaining the game‐theoretical concept, the author defends its application to legal theory by reviewing the exchange he has had with Joseph Raz about the authority of law. Extending that debate, he argues that criticisms from Raz and others miss the point of the co‐ordination thesis; its (...) primary benefit is that it illuminates the source of law's moral authority in the way law enables individuals to co‐ordinate their actions for the common good without imposing a national common enterprise upon them. (shrink)

Each of us has a story which we can think of as a set of beliefs, hopefully consistent. We make our decisions in view of our beliefs which may be probabilistic, in the general case, but simple yes or no as in this paper. Our beliefs are our envelope just as the shell of a tortoise is its envelope. Decision theory—or single agent game theory tells us when to make the best choice in a game of us against nature. But (...) nature has no desire to further or frustrate our efforts. Nature is mysterious but not malign. Things change when there are other agents involved. Then the best thing for us to do will depend on what they do. And they will think the same. And we predict their actions in terms of what we think their beliefs are. But how do we coordinate with others whose beliefs are different? This paper addresses the issue of working together despite different beliefs. (shrink)

Religion as a social and spiritual phenomenon in its functional manifestation responds to various human needs, while satisfying, above all, those spiritual needs that can not satisfy any other social phenomenon. Religion, however, appears as a certain qualitative certainty characterizing the ability and ability to satisfy the vital needs of man, religious communities and society, and helping a believer in comprehending the inner essence of the world in his transcendental co-ordinates, posing a "normative and content quintessence of experience", inherent in (...) this social phenomenon. overcoming suffering, life problems, and also contributes to the awareness of the meaning and significance of earthly life as a believer in the perspective of "the last reality". (shrink)

The ideas of philosopher John Rawls should be appropriated for the information age. A literature review identifies previous contributions in fields such as communication and library and information science. The article postulates the following neo-Rawlsian propositions as co-ordinates for the development of a normative theory of the information society: that political philosophy should be incorporated into information society studies; that social and technological circumstances define the limits of progressive politics; that the right is prior to the good in social morality; (...) that the nation state should remain in sharp focus, despite globalization; that liberty, the first principle of social justice, requires updating to deal with the growth of surveillance and other challenges; that social wellbeing is a function of equal opportunities plus limited inequalities of outcome, in information as well as material resources; and that political stability depends upon an overlapping consensus accommodating both religion and secularism. Although incomplete, such co-ordinates can help to guide policy-makers in the twenty-first century. (shrink)

This handbook provides the Personal, Social and Health Education co-ordinator in a school with everything that they need to deliver good practice in this subject. The book contains thorough guidance through policy and required practice and has a strongly practical bias. It shows through examples of good practice what can be achieved and how this can generally help to raise standards in schools. This is a topical, lively and up-to-date book which tackles the real issues facing schools, heads, co-ordinators and (...) classroom teachers in an engaging and practical manner. It quotes from examples and case studies where strategies worked, and failed - but also keeps the learning of the pupil as the focus of all activities. _The PSHE Co-ordinators Handbook_ is what every Head and PSHE co-ordinator needs to help them make practical sense of the new curriculum, the new PSHE, the new healthy school standard, social inclusion, citizenship, school councils, and the new Ofsted requirements - and how these can be woven together in a coherent way to support the raising of academic standards. (shrink)

PurposeThe purpose of this paper is to discuss whether existing organisations that seek to integrate a range of stakeholders in the field of information and communication technology and ageing are adequately meeting the needs of each of these stakeholder groups, and to determine whether a new, or re‐organised, mechanism is needed to better meet the needs of stakeholders.Design/methodology/approachThe authors identify, describe, assess and compare the adequacy of various candidate multi‐stakeholder mechanisms in order to improve stakeholder co‐operation.FindingsThe authors' principal finding is (...) that the stakeholder co‐ordination mechanisms discussed in this paper are not adequate to foster e‐inclusion co‐operation, co‐ordination and collaboration among all different types of stakeholders.Practical implicationsThis analysis offers direction in how a new organisation, or the expansion of an existing mechanism, could ensure that currently un‐met needs are addressed. The strengths and weaknesses of the stakeholder co‐ordination mechanisms discussed here demonstrate that some organisational types are better for performing certain tasks and for integrating particular types of stakeholder. Thus, a federated, multi‐dimensional organisation offers one possibility for addressing the needs of all different types of stakeholders.Originality/valueThis paper provides an avenue of response to various calls for closer stakeholder collaboration by the European Commission and other stakeholders, in order to improve the quality of life for older persons and to meet European social objectives. (shrink)

The importance of the notion of common knowledge in sustaining cooperative outcomes in strategic situations is well appreciated. However, the systematic analysis of the extent to which small departures from common knowledge affect equilibrium in games has only recently been attempted.We review the main themes in this literature, in particular, the notion of common p-belief. We outline both the analytical issues raised, and the potential applicability of such ideas to game theory, computer science and the philosophy of language.

Within the research field of computer-mediated communication, extensive attention has been paid to the differences between CMC and spoken conversation, particularly in terms of sequential structure. In this study, the aim is to analyse how participants maintain continuity and handle discontinuities in institutionally arranged, computer-mediated communication. The empirical material consists of chat log files from in-service training courses for professionals in the food production industry. In the chat sessions we analysed, participants initially had some problems in co-ordinating their postings, that (...) is, keeping track of the discussion’s threading.We also found, however, that methods for co-ordinating postings rather quickly were established among the participants. Two methods for making recognizable how postings were to be read were common in the material: 1) the use of personal names to address a specific participant, and 2) recycling part of the content of a previous posting or reformulating the content in the posting addressed in recognizable ways. We also found an emerging norm in their interaction: that of waiting for one’s turn. (shrink)

Can victims of the oracle paradox, which is known primarily through its unexpected hanging and surprise examination versions, extricate themselves from their difficulties of reasoning? No. For they do not, contrary to recent opinion, commit errors of fallacious elimination. As I shall argue, the difficulties of reasoning faced by these victims do not originate in the domain of concepts, propositions and their entailment relations; nor do they result from misapprehensions about limitations on what can be known. The difficulties of reasoning (...) flow, instead, from conflicts that arise in the practical dimension of life. The oracle paradox is in this way more evocative of problems faced in the theory of computation than it is like the celebrated Russell’s paradox. (shrink)

Visual imagery is a form of sensory imagination, involving subjective experiences typically described as similar to perception, but which occur in the absence of corresponding external stimuli. We used the Activation Likelihood Estimation algorithm (ALE) to identify regions consistently activated by visual imagery across 40 neuroimaging studies, the first such meta-analysis. We also employed a recently developed multi-modal parcellation of the human brain to attribute stereotactic co-ordinates to one of 180 anatomical regions, the first time this approach has been combined (...) with the ALE algorithm. We identified a total 634 foci, based on measurements from 464 participants. Our overall comparison identified activation in the superior parietal lobule, particularly in the left hemisphere, consistent with the proposed ‘top-down’ role for this brain region in imagery. Inferior premotor areas and the inferior frontal sulcus were reliably activated, a finding consistent with the prominent semantic demands made by many visual imagery tasks. We observed bilateral activation in several areas associated with the integration of eye movements and visual information, including the supplementary and cingulate eye fields (SCEFs) and the frontal eye fields (FEFs), suggesting that enactive processes are important in visual imagery. V1 was typically activated during visual imagery, even when participants have their eyes closed, consistent with influential depictive theories of visual imagery. Temporal lobe activation was restricted to area PH and regions of the fusiform gyrus, adjacent to the fusiform face complex (FFC). These results provide a secure foundation for future work to characterise in greater detail the functional contributions of specific areas to visual imagery. (shrink)

Gauthier and Hobbes reduce Prisoners Dilemmas to co-ordination problems (CPs). Many think rational, face-to-face agents can solve any CP by agreed fiat. But though an agent can rationally use a symmetry-breaking technique (ST) to decide between equal options, groups cannot unless their members' STs luckily converge. Failing this, the CP is escapable only by one agent's non-rational stubbornness, or by the group's "conquest" by an outside force. Implications: one's strategic rationality is group-relative; there are some optimums groups in principle cannot (...) rationally choose; thus justice cannot always be a rationally contracted optimum. Howard Sobel provides the point of departure. (shrink)

This paper develops co-ordinated multiple-domain supervenience relations to model determination and dependence relations between complex entities and their constituents by appealing to R-related pairs and by making use of associated isomorphisms. Supervenience relations are devised for order-sensitive and repetition-sensitive mereologies, for mereological systems that make room for many-many composition relations, as well as for hierarchical mereologies that incorporate compositional and hylomorphic structure. Finally, mappings are provided for theories that consider wholes to be prior to their parts.

In this paper we consider the concept of a self-aware agent. In cognitive science agents are seen as embodied and interactively situated in worlds. We analyse the meanings attached to these terms in cognitive science and robotics, proposing a set of conditions for situatedness and embodiment, and examine the claim that internal representational schemas are largely unnecessary for intelligent behaviour in animats. We maintain that current situated and embodied animats cannot be ascribed even minimal self-awareness, and offer a six point (...) definition of embeddedness, constituting minimal conditions for the evolution of a sense of self. This leads to further analysis of the nature of embodiment and situatedness, and a consideration of whether virtual animats in virtual worlds could count as situated and embodied. We propose that self-aware agents must possess complex structures of self-directed goals; multi-modal sensory systems and a rich repertoire of interactions with their worlds. Finally, we argue that embedded agents will possess or evolve local co-ordinate systems, or points of view, relative to their current positions in space and time, and have a capacity to develop an egocentric space. None of these capabilities are possible without powerful internal representational capacities. (shrink)

From delegation to specialization: nurses and clinical trial co‐ordinationThis paper considers an area of clinical research that has been delegated by physician‐researchers to nurses and others in the United States, that of clinical trials co‐ordination. It uses interviews with nurse trial co‐ordinators to explore the occupational processes by which the boundaries of work enactment and the definition of work have been established by nurses and others. It then discusses the occupational processes that have been established to formalize a role for (...) nurses in clinical research. It raises the question of (and offers speculation on) whether specialization alone will distinguish nursing from other occupational groups engaged in clinical research work. (shrink)

Little is known about study co-ordinators of gene therapy clinical trials. The purposes of this study were to: (1) describe characteristics of co-ordinators of gene therapy (transfer) clinical trials; (2) assess differences between nurse and non-nurse study co-ordinators; and (3) identify factors indicative of study co-ordinators' role preparation that could affect their role performance. This exploratory correlational study employed a convenience sample of 118 co-ordinators in the USA (55 participants; 47% response rate). The researcher created the Study Coordinator Role Preparedness (...) and Performance Survey to assess factors or correlates of study co-ordinator performance. Analysis of variance was used to compare nurses and non-nurses, and men versus women on their perceived preparedness, perceived quality of orientation, and satisfaction with educational opportunities. The findings contribute to knowledge by identifying present inadequacies in the training of study co-ordinators and in recognizing the need for more effective provision of orientation and continuing education with respect to ethical issues, knowledge of genetic science, and potential research integrity challenges. (shrink)