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141.
A possible world structure consist of a set W of possible worlds and an accessibility relation R. We take a partial function r(·,·) to the unit interval [0, 1] instead of R and obtain a Kripke frame with graded accessibility r Intuitively, r(x, y) can be regarded as the reliability factor of y from x We deal with multimodal logics corresponding to Kripke frames with graded accessibility in a fairly general setting. This setting provides us with a framework for fuzzy possible world semantics. The basic propositional multimodal logic gK (grated K) is defined syntactically. We prove that gK is sound and complete with respect to this semantics. We discuss some extensions of gK including logics of similarity relations and of fuzzy orderings. We present a modified filtration method and prove that gK and its extensions introduced here are decidable. 相似文献
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143.
Rats were trained on an eight-arm, elevated radial maze in a large cylindrical chamber where extramaze stimuli could be manipulated. The first experiment indicated that rats could use extramaze stimuli to locate the arms if such stimuli were available, whereas they performed less effectively and tended to employ response chaining if these stimuli were not available. The second experiment demonstrated that maze performance was disrupted by transposition of the stimuli but was relatively unaffected by rotation of the same stimuli. The third experiment suggested that the disruptive effect of stimulus transposition might be due to a “resetting” process elicited by the alteration in the configuration of the stimuli after stimulus transposition. These results suggest that when extramaze stimuli are available, rats tend to use such stimuli in a configurational manner to locate the arms rather than as a list of items processed independently of their spatial relationships to each other. 相似文献
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145.
This study investigated whether the underlying structure of responses to facial expressions of emotion would emerge when the exposure time was increased. 25 participants judged facial photographs presented for varying durations of exposure, ranging from 4 msec. to 64 msec. in 4-msec. steps. A dual scaling method was carried out to analyze possible response differentiation as a function of exposure time. Two major components were extracted. Based on the configuration of variables they were interpreted as valence (hedonic tone) and activation. Results indicated that a positive emotion and a highly activated emotion such as surprise and fear were easily recognized under a relatively brief exposure to the stimuli. 相似文献
146.
Observers in Canada (n=50), Greece (n=38), and Japan (n=50) were shown seven of Matsumoto and Ekman's (1988) photographs reported to show universally recognizable facial expressions of basic emotions. Observers were asked to name the emotion expressed with any single emotion label they wanted. Across cultures, recognition (percentage of observers agreeing with prediction) was high (>80%) for thehappy expression (indicating that observers understood the task), low for thecontempt expression (0 to 2%), and intermediate for the others (14 to 80% forsurprise, sadness, anger, disgust, andfear). Recognition for some facial expressions varied with the culture of the observer: For example, recognition of thefear expression was moderate to high in the two Western samples (62 to 87%) but low in the Japanese (14%); indeed, the Japanese modal response wassurprise rather thanfear.This study was funded by a grant from the Social Sciences and Humanities Research Council of Canada.We thank Konstandina Nelos for her help in gathering the data in Greece. 相似文献
147.
Nobu -Yuki Suzuki 《Studia Logica》1990,49(3):289-306
Shehtman and Skvortsov introduced Kripke bundles as semantics of non-classical first-order predicate logics. We show the structural equivalence between Kripke bundles for intermediate predicate logics and Kripke-type frames for intuitionistic modal prepositional logics. This equivalence enables us to develop the semantical study of relations between intermediate predicate logics and intuitionistic modal propositional logics. New examples of modal counterparts of intermediate predicate logics are given.The author would like to express his gratitude to Professor Hiroakira Ono for his comments, and to Professor Tadashi Kuroda for his encouragement.The author wishes to express his gratitude to Professors V. B. Shehtman, D. P. Skvortsov and M. Takano for their comments. 相似文献
148.
K Suzuki 《Perception & psychophysics》1991,49(4):349-354
In 1962, Kaufman and Rock reported that the moon illusion did not occur in the darkness of a planetarium or in a completely dark room. The present study reexamined their findings. Two pairs of light points, separated by 3.5 degrees, were presented on the dome screen of a planetarium. Subjects compared the distance between the two light points presented in the horizontal direction with the distance between the two light points at the zenith. Three illumination conditions were used: The inside of the planetarium was completely dark, was lighted, or was projected with the silhouette of a city under a starry sky. The effect of eye elevation on the illusion was also examined. Contrary to Kaufman and Rock's results, a size discrepancy comparable to the moon illusion was obtained in the horizon-and-stars condition and even in the complete-darkness condition. Little or no illusion was obtained in the lighted-room condition. The results also showed that eye elevation affected the magnitude of the illusion. 相似文献
149.
Abstract: When people are asked to detect two targets from a rapid serial visual presentation (RSVP) stream, impairment of recognition of the second target (T2) can be observed if the T2 is presented several hundred milliseconds later than the first target (T1). This phenomenon is known as attentional blink, and is considered to reflect some temporal characteristic of the attentional process. The aim of the present study was to use the attentional blink paradigm to examine whether the affective meaning of the stimuli could affect the magnitude of attentional blink. In Experiment 1, the valence of the T2 (neutral, positive, and negative) was manipulated. Significant T2 detection deficit was observed with neutral and positive T2 but not with negative T2. Experiment 2 demonstrated that non‐significant attentional blink in negative T2 in Experiment 1 could be attributed to the negative affective meaning of T2. Results are discussed in terms of the high saliency of negative information. 相似文献
150.
Self‐expression and relationship formation in high relational mobility environments: A study of dual users of American and Japanese social networking sites
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This study proposes that self‐expression motivation, an aspect of independent/individualistic psychological tendencies, aids in the formation of social relationships when social relationships are open and mobile. In societies characterised by high relational mobility (e.g., North America), which creates market‐like competition in social relationships, individuals must express their uniqueness and worthiness to form new social relationships. Self‐expression motivation has a relatively weak effect on relationship formation in low relational mobility societies (e.g., Japan), where social relationships are generally predetermined. This hypothesis was examined and supported through a study on dual users of two social networking sites—Facebook and Mixi (the “Facebook of Japan”). As expected, relational mobility was higher on Facebook than on Mixi. Moreover, the association between self‐expression motivation and the number of new friends met on Facebook/Mixi was more positive for Facebook than it was for Mixi. The social functionality of independent tendencies is then discussed. 相似文献