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Based on six detailed case studies of languages in which focus is marked morphosyn-tactically, we propose a novel formal theory of focus marking, which can capture these as well as the familiar English-type prosodic focus marking....
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Based on six detailed case studies of languages in which focus is marked morphosyn-tactically, we propose a novel formal theory of focus marking, which can capture these as well as the familiar English-type prosodic focus marking. Special attention is paid to the patterns of focus syncretism, that is, when different size and/or location of focus are indistinguishably realized by the same form. The key ingredients to our approach are that complex constituents (not just words) may be directly focally marked, and that the choice of focal marking is governed by blocking.
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Although prior research has shown that some people prefer a risky to an ambiguous option, this study further proposes that people's regulatory focus (promotion vs. prevention) might influence their ambiguity aversion. Three experi...
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Although prior research has shown that some people prefer a risky to an ambiguous option, this study further proposes that people's regulatory focus (promotion vs. prevention) might influence their ambiguity aversion. Three experiments have tested whether people with promotion focus showed less ambiguity aversion than those with prevention focus: The first experiment revealed that, compared with chronically promotion-focused individuals, prevention-focused subjects preferred a risky to an ambiguous option. In the second experiment, priming of the subjects' goal orientations led to similar results. Experiment 3 demonstrated that participants showed less ambiguity aversion for the expected performance of an investment product representative of promotion (e.g., a stock fund) rather than one representative of prevention (e.g., a bond fund). In other words, people showed less preference for a bond fund when the probability distribution of its expected performance was unknown than when it was known, whereas they showed less preference difference between known and unknown probability distributions for the expected performance of a stock fund. This study has integrated research pertaining to regulatory focus and ambiguity aversion, and the results have confirmed that the impact of regulatory focus on ambiguity aversion is robust across different methods and decision tasks.
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People with aphasia (PWA) often fail to understand syntactically complex sentences. This phenomenon has been described as asyntactic comprehension and has been explored in various studies cross-linguistically in the past decades. ...
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People with aphasia (PWA) often fail to understand syntactically complex sentences. This phenomenon has been described as asyntactic comprehension and has been explored in various studies cross-linguistically in the past decades. However, until now there has been no consensus among researchers as to the nature of sentence comprehension failures in aphasia. Impaired representations accounts ascribe comprehension deficits to loss of syntactic knowledge, whereas processing/resource reduction accounts assume that PWA are unable to use syntactic knowledge in comprehension due to resource limitation resulting from the brain damage. The aim of this paper is to use independently motivated psycholinguistic models of sentence processing to test a variant of the processing/resource reduction accounts that we dub the Complexity Threshold Hypothesis. According to this hypothesis, PWA are capable of building well-formed syntactic representations, but, because their resources for language processing are limited, their syntactic parser fails when processing complexity exceeds a certain threshold. The source of complexity investigated in the experiments reported in this paper is syntactic prediction. We conducted two experiments involving comprehension of sentences with different types of syntactic dependencies, namely dependencies that do not require syntactic prediction (i.e. unpredictable dependencies in sentences that require Quantifier Raising) and dependencies whose resolution requires syntactic predictions at an early stage of processing based on syntactic cues (i.e. predictable dependencies in movement-derived sentences). In line with the predictions of the Complexity Threshold Hypothesis, the results show that the agrammatic patients that participated in this study had no difficulties comprehending sentences with the former type of dependencies, whereas their comprehension of sentences with the latter type of dependencies was impaired. (C) 2016 Elsevier Ltd. All rights reserved.
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We report experimental verification of an extended depth of focus (EDF) system with near-diffraction-limited performance capabilities. Dowski and Cathey [Appl. Opt. 34, 1859-1866 (1995)] described the theory of this system in deta...
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We report experimental verification of an extended depth of focus (EDF) system with near-diffraction-limited performance capabilities. Dowski and Cathey [Appl. Opt. 34, 1859-1866 (1995)] described the theory of this system in detail. We can create an EDF system by modifying a standard incoherent optical system with a special cubic phase plate placed at the aperture stop. We briefly review the theory and present the first optical experimental verification of this EDF system. The phase plate codes the wave front, producing a modified optical transfer function. Once the image is transformed into digital form, a signal-processing step decodes the image and produces the final in-focus image. We have produced a number of images from various optical systems using the phase plate, thus demonstrating the success of this EDF system. (C) 1997 Optical Society of America.
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Quantifier Raising usually exhibits finite-clause boundedness due to the syntactic and semantic constraints it is subject to (Fox 1995, 2000, Cecchetto 2004, a.o.). In this paper, I argue that QR out of a Mandarin prenominal pre-d...
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Quantifier Raising usually exhibits finite-clause boundedness due to the syntactic and semantic constraints it is subject to (Fox 1995, 2000, Cecchetto 2004, a.o.). In this paper, I argue that QR out of a Mandarin prenominal pre-determiner RC is not only properly licensed, obeying both syntactic and semantic constraints, but also needed to account for the exceptional-scope effects observed across relative clause boundaries (Huang 1982, Aoun and Li 1993, a.o.). I further consider constructions where the exceptional-scope effects are not present, including relative clauses containing the focus-sensitive operator dou and full-sized subject RCs, and show that the absence of the exceptional-scope effects in these constructions follows directly from the proposed analysis.
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Focus groups have traditionally been used in market and design research to obtain group reactions to product concepts. In this article we outline a simple methodological extension to this format, involving a further stage of conce...
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Focus groups have traditionally been used in market and design research to obtain group reactions to product concepts. In this article we outline a simple methodological extension to this format, involving a further stage of concept re-design in smaller subgroups facilitated by a professional designer. The method was developed in the context of working with groups of older people on concepts addressing memory, identity and social communication. It is illustrated with reference to the re-design of two seeded concepts and feedback from participants themselves on the experience of taking part.
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We designed an optical-digital system that delivers near-diffraction-limited imaging performance with a large depth of field. This system is the standard incoherent optical system modified by a phase mask with digital processing o...
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We designed an optical-digital system that delivers near-diffraction-limited imaging performance with a large depth of field. This system is the standard incoherent optical system modified by a phase mask with digital processing of the resulting intermediate image. The phase mask alters or codes the received incoherent wave front in such a way that the point-spread function and the optical transfer function do not change appreciably as a function of misfocus. Focus-independent digital filtering of the intermediate image is used to produce a combined optical-digital system that has a nearly diffraction limited point-spread function. This high-resolution extended depth of field is obtained through the expense of an increased dynamic range of the incoherent system. We use both the ambiguity function and the stationary-phase method to design these phase masks. [References: 18]
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In this paper, we present a globally optimal and computationally efficient technique for estimating the focus of expansion (FOE) of an optical flow field, using fast partial search. For each candidate location on a discrete sampli...
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In this paper, we present a globally optimal and computationally efficient technique for estimating the focus of expansion (FOE) of an optical flow field, using fast partial search. For each candidate location on a discrete sampling of the image area, we generate a linear system of equations for determining the remaining unknowns, viz. rotation and inverse depth. We compute the least squares error of the system without actually solving the equations, to generate an error surface that describes the goodness of fit across the hypotheses. Using Fourier techniques, we prove that given an N x N flow field, the FOE, and subsequently rotation and structure, can be estimated in O(N-2 log N) operations. Since the resulting system is linear, bounded perturbations in the data lead to bounded errors. We support the theoretical development and proof of our technique with experiments on synthetic and real data. Through a series of experiments on synthetic data, we prove the correctness, robustness and operating envelope of our algorithm. We demonstrate the utility of our technique by applying it for detecting obstacles from a monocular sequence of images. [References: 35]
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Purpose This paper aims to explore the power of appeals based on fear mixed with challenge co-designed with vulnerable consumers in motivating the use of credence services. Design/methodology/approach A qualitative phase (Study 1)...
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Purpose This paper aims to explore the power of appeals based on fear mixed with challenge co-designed with vulnerable consumers in motivating the use of credence services. Design/methodology/approach A qualitative phase (Study 1), comprising focus groups of self-identified at-risk gamblers, revealed a series of conceptual themes for advertising stimuli that were then tested empirically (Study 2) on the likelihood to use credence services in a gambling context. Individual characteristics such as tolerance of ambiguity were also tested for their potential moderating influence. Findings In comparison to appeals based on single emotions, fear mixed with the challenge has a significantly stronger impact on intentions to use credence services in at-risk gamblers. Findings confirm the indirect positive impact of fear mixed with the challenge via sequential mediators of involvement with advertising and attitude towards credence service advertising. The moderating role of tolerance of ambiguity on credence service use intentions was confirmed. Originality/value The potential of a fear mixed with challenge appeal to motivate vulnerable consumers to seek credence services has not been investigated to date. The findings contribute to both the transformative service research and advertising literature streams by providing valuable insights into promotional campaigns aimed at vulnerable consumers such as at-risk gamblers.
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