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1.
Classification of dog barks: a machine learning approach   总被引:1,自引:0,他引:1  
In this study we analyzed the possible context-specific and individual-specific features of dog barks using a new machine-learning algorithm. A pool containing more than 6,000 barks, which were recorded in six different communicative situations was used as the sound sample. The algorithm's task was to learn which acoustic features of the barks, which were recorded in different contexts and from different individuals, could be distinguished from another. The program conducted this task by analyzing barks emitted in previously identified contexts by identified dogs. After the best feature set had been obtained (with which the highest identification rate was achieved), the efficiency of the algorithm was tested in a classification task in which unknown barks were analyzed. The recognition rates we found were highly above chance level: the algorithm could categorize the barks according to their recorded situation with an efficiency of 43% and with an efficiency of 52% of the barking individuals. These findings suggest that dog barks have context-specific and individual-specific acoustic features. In our opinion, this machine learning method may provide an efficient tool for analyzing acoustic data in various behavioral studies.  相似文献   

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Researchers have examined symbolic play style as a qualitative variable distinguishing two groups of children: patterners and dramatists. We have conceptualized style not as a typology of children but as reflecting dimensions of difference between children which are amenable to quantitative analysis. For the construct of style to be invoked, it must be measurable by many variables, it must be observable over time, and it ought to be demonstrably independent of general developmental level. Fifteen boys and 15 girls were each seen twice, once at 21 months of age and again 6 weeks later. The Session 2 pattern of correlations among hypothesized dramatist measures was not entirely consistent with that observed at Session 1; however, three measures, narrative vocalizations, spontaneous play, and elicited-appropriate play were primary dramatist measures at both sessions.  相似文献   

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With increasing momentum for health care reform, attention is shifting to finance reform that will provide for direct methods for controlling health care spending. This article outlines the two principal paths to direct cost control and outlines a national plan that retains our multiple sources of payment, yet also contains a powerful direct cost control technique: a single fund to finance all health care.  相似文献   

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The effect of repeated interruption of FI responding by short SΔ presentations on the pattern of increasing frequency of responding through the interval has been studied. Although the SΔ profoundly changed the pattern of responding during their presentation, the general scalloped pattern of FI responding survived. The implication of these findings for understanding the role of chaining of responses in FI patterns is discussed. It is suggested that chaining is not a necessary condition for the scalloped pattern.  相似文献   

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We investigated whether art is distinguished from other real world objects in human cognition, in that art allows for a special memorial representation and identification based on artists’ specific stylistic appearances. Testing art-experienced viewers, converging empirical evidence from three experiments, which have proved sensitive to addressing the question of initial object recognition, suggest that identification of visual art is at the subordinate level of the producing artist. Specifically, in a free naming task it was found that art-objects as opposed to non-art-objects were most frequently named with subordinate level categories, with the artist’s name as the most frequent category (Experiment 1). In a category-verification task (Experiment 2), art-objects were recognized faster than non-art-objects on the subordinate level with the artist’s name. In a conceptual priming task, subordinate primes of artists’ names facilitated matching responses to art-objects but subordinate primes did not facilitate responses to non-art-objects (Experiment 3). Collectively, these results suggest that the artist’s name has a special status in the memorial representation of visual art and serves as a predominant entry point in recognition in art perception.  相似文献   

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This paper examines explanations for human artistic behavior in two reductionist research programs, cognitive neuroscience and evolutionary psychology. Despite their different methodological outlooks, both approaches converge on an explanation of art production and appreciation as byproducts of normal perceptual and motivational cognitive skills that evolved in response to problems originally not related to art, such as the discrimination of salient visual stimuli and speech sounds. The explanatory power of this reductionist framework does not obviate the need for higher-level accounts of art from the humanities, such as aesthetics, art history or anthropology of art.  相似文献   

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The idea of the personality as a work of art offers a new conception of personality. From this perspective, personality would be the ethical and aesthetic style each person gives to their life, according, naturally, to the prevailing personal circumstances and social values. The idea is developed in two parts. In the first, which constitutes the empirical part, a historical review, from the time of Homer to the present day, reveals a ‘great chain of personality’, with its characteristics in each era. In the second, or transcendental part, we argue that it is some kind of work-of-art or life project that constitutes personality, whatever its aesthetic form. From this point of view, life projects, though in principle fictitious, may end up forging a person's true character, in accordance with a person-character dialectic. This dialectic is well illustrated by the literary figure of Don Quixote, but it is equally valid for anybody in everyday life. In any case, it is understood that the development of a personality is a dramatic task (in line with the theatrical sense that is at the basis of this conception). Among the most important consequences of this idea is the confirmation of responsibility as an essential constituent of the person.  相似文献   

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This paper discusses the contribution of family systems theory and therapy to mainstream alcohol treatment programmes. Systemic psychotherapy is integrated with group analytic psychotherapy in a couples and family therapy service within a community alcohol service (CAS) which uses the Prochaska and Diclemente model of stages of change. Problems and solutions in putting these complex ideas into practice are discussed, with specific reference to issues of engagement. An example of our work with a couple is offered to illustrate our weave of theory and practice.  相似文献   

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The field of neuroaesthetics attempts to identify the brain processes underlying aesthetic experience, including but not limited to beauty. Previous neuroaesthetic studies have focussed largely on paintings and music, while performing arts such as dance have been less studied. Nevertheless, increasing knowledge of the neural mechanisms that represent the bodies and actions of others, and which contribute to empathy, make a neuroaesthetics of dance timely. Here, we present the first neuroscientific study of aesthetic perception in the context of the performing arts. We investigated brain areas whose activity during passive viewing of dance stimuli was related to later, independent aesthetic evaluation of the same stimuli. Brain activity of six na?ve male subjects was measured using fMRI, while they watched 24 dance movements, and performed an irrelevant task. In a later session, participants rated each movement along a set of established aesthetic dimensions. The ratings were used to identify brain regions that were more active when viewing moves that received high average ratings than moves that received low average ratings. This contrast revealed bilateral activity in the occipital cortices and in right premotor cortex. Our results suggest a possible role of visual and sensorimotor brain areas in an automatic aesthetic response to dance. This sensorimotor response may explain why dance is widely appreciated in so many human cultures.  相似文献   

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In this article the issues of egg and embryo implantation are examined in the light of i&art1;ālat al-ibā&art2;a wa-al-&art2;īliyya in Shi&art12;ite teachings and the Kantian principle of autonomy. Textual justification is given for the ibā&art2;a doctrine that what is not explicitly prohibited is permissible. When applied to the issues of egg and embryo implantation this leads to the conclusion that people may freely decide whether or not to engage in these medical processes, taking into account other relevant norms and possible consequences. A similar conclusion is reached through discussion of three particular cases of egg and embryo implantation in the light of an interpretation of Kantian autonomy in which people freely use reason to make right decisions in accordance with universal moral law. Despite the major differences between the two systems several similarities are noted and it is suggested that constructive development could result from interaction between them.  相似文献   

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Anshel, M.H., Kang, M. & Miesner, M. (2010). The approach‐avoidance framework for identifying athletes’ coping style as a function of gender and race. Scandinavian Journal of Psychology. The purpose of this study was to identify the coping styles of competitive athletes as a function of gender and race in response to events experienced during the contest perceived as highly stressful using the approach and avoidance coping framework. Participants (N = 218) consisted of 111 males (48 African American and 63 Caucasian) and 107 females (41 African American and 66 Caucasian), and ranged in age from 18 to 54 yrs (M ± SD; 22.29 ± 3.9 yrs). They attended a university in the southeastern US, and were considered highly skilled athletes based on their current or former participation as competitive athletes. A 12‐item inventory was completed consisting of six approach coping and six avoidance coping strategy items. Confirmatory factor analysis, composite reliability and Cronbach’s alpha indicated acceptable model‐data fit and internal scale consistency. The results suggested the athletes’ preferred coping style was avoidance, rather than approach. A 2 × 2 ANOVA showed significant main effects for gender (p = 0.003) and race (p < 0.01); males used more approach coping than females, while Caucasians applied more approach coping than African Americans. No significant interaction was found. The results indicated the need for future study on examining gender and race as moderating variables in examining athletes’ coping styles.  相似文献   

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In pigeons under fixed-interval schedules of reinforcement, responding during most of the interval can be suppressed by stimulus conditions never present when a response is promptly followed by reinforcing stimuli. When the external stimuli obtaining immediately before reinforcement are presented during brief probe periods in the course of the interval, the rate of responding in the probe depends on the temporal position of the probe during the interval; the rate of responding is lower during a probe early in the interval than during one late in the interval. The present experiments show that the temporal dependency still holds (1) in birds with no experience under unmodified fixed-interval schedules, (2) when the time between probes is spent in complete darkness, and (3) when food presentations are omitted at the end of 50% of intervals. The results strengthen and extend the conclusion from previous studies that the time relations themselves are the primary control of rate of responding under fixed-interval schedules of reinforcement.  相似文献   

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Termination is a neglected topic within the major schools of family therapy that draw upon systemic frameworks. This paper attempts to develop a conceptual framework for understanding termination as a process which, if handled correctly, may have a surprising degree of therapeutic potential. Termination is therefore seen not just as a passive process of ending therapy, but as a potentially empowering process which can help clients from slipping back into old ways of functioning. Follow-up sessions can therefore be reconceptualized as integral steps in an active termination process which can be extended over a number of months. The precipitate ending of sessions may be justifiable from a theoretical point.of view within certain models, but within a structural framework (which places such a strong emphasis on joining) the effects of rapid termination may not only be counter-productive but may reflect underlying problems that reflect the needs of the therapist rather than the needs of the family that is in therapy.  相似文献   

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