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81.
Connectionist modeling is computationally intensive. Until parallel computers become more widely available, supercomputing resources can be exploited. This paper describes a neural network simulator (NNS) written in FORTRAN for supercomputers. The present simulation engine consists of code for the backpropagation method of changing weights in connectionist models. A file interface reports simulation results in a variety of formats. The file interface also contains an interpreter for an input file through which the network structure is defined, the problem is represented, and various parameters are set. The input-file syntax is described in detail. NNS has been used both as an instructional aid and as a research tool. A simulation of “recovery of unrehearsed associations” is used to illustrate the use of the input file and to demonstrate the performance of NNS. Versions of NNS have been written for the Cray X-MP/48 and for the IBM 3090. 相似文献
82.
Ruth H. Maki 《Memory & cognition》1998,26(5):959-964
North Dakota State University, Fargo, North Dakota Delayed judgments of learning for word pairs are more accurate than immediate judgments of learning when the memory test is delayed. In the present experiment, I investigated a similar paradigm with text. Participants predicted performance on texts either immediately after reading the texts or after a delay following the reading of other texts, and tests were given either immediately or after a delay. Immediate ratings with an immediate test produced the most accurate predictions, and immediate ratings with a delayed test produced less accurate predictions. Delaying both the ratings and the test did not produce more accurate predictions than immediate predictions and a delayed test. The results for delayed judgments of learning with text were different from those with word pairs. 相似文献
83.
Continental Philosophy Review - 相似文献
84.
To better understand the consistency of people’s proenvironmental intentions and behaviors, we set out to examine two sets of research questions. First, do people perform (1) different types of proenvironmental behaviors consistently, and (2) the same proenvironmental behavior consistently across settings? Second, are there consistent predictors of proenvironmental behavioral intentions across behavior and setting type? Participants reported four recycling and conservation behaviors across three settings, revealing significant variability in rates of behaviors across settings. Prior behavior, attitudes toward the behavior, and importance of the behaviour consistently predicted proenvironmental intentions. However, perceived behavioral control tended to predict intentions to perform proenvironmental behavior outside the home. Future research aimed at understanding and influencing different proenvironmental behaviors should carefully consider how settings affect intentions and behavior. 相似文献
85.
86.
The purpose of this study was to investigate the biomechanics of the continuity and speed change of the Fouette turn. This turn is one of the turns performed on one leg in classical ballet and is unique in terms of its continuity and change in rotational speed of the torso during one revolution of the turn. We filmed the turn as performed by seven experienced female ballet dancers in a clockwise direction on a force plate using three high speed cine cameras. In a 3D motion analysis of the turn, we found that the dancers mainly controlled the rotational speed by swinging the free or gesture leg laterally through torque exertion at the hip joint of the leg in clockwise and then counterclockwise directions, and that they supplied an angular impulse mainly to the gesture leg during the swing when flexing the supporting leg and keeping their foot flat on the plate. This supply of momentum enabled them to continue the turn compensating for the loss of the momentum of the body brought about in a rapid rotation phase when they were standing on tiptoe touching the foot of the gesture leg on the knee of the supporting leg. 相似文献
87.
Maki WS 《Journal of experimental psychology. Learning, memory, and cognition》2007,33(1):231-237
Ratings of the degree of association between words are linearly related to normed associative strengths, but the intercept is high, and the slope is shallow (the judgments of associative memory [JAM] function). Two experiments included manipulations intended to decrease the intercept and increase the slope. Discrimination training on many pairs of words and constraining ratings to sum to a constant both reduced the intercept but failed to change the slope. The intercept of the JAM function appears to contain a bias component that can be manipulated independently of the slope, which reflects sensitivity to associative strengths. 相似文献
88.
Observers monitored streams of words or letters (10 items/sec) for one or two targets. An attentional blink (AB) effect was observed in which identification of the first target temporarily impaired identification of the second target. Target identification was impaired when the distractors were composed of either letters or false-font characters (cf. Maki, Couture, Frigen, & Lien, 1997). An asymmetrical AB effect was observed with letters and mathematical symbols; the AB effect was largest for symbol targets and letter distractors. The characters used in these experiments were rated on their meaningfulness, familiarity, and other stimulus properties. The rating data showed that pixel density best accounted for the asymmetrical target-distractor similarity effects. Modulation of the AB effect by target-distractor similarity appears to result partly from low-level masking. But masking effects may be reduced by attentional capture by target features. 相似文献
89.
Butler KM Williams CC Zacks RT Maki RH 《Journal of experimental psychology. Learning, memory, and cognition》2001,27(5):1314-1319
Retrieving some members of a memory set impairs later recall of semantically related but not unrelated members (M. C. Anderson, R. A. Bjork, & E. L. Bjork, 1994; M. C. Anderson & B. A. Spellman, 1995). The authors investigated whether this retrieval-induced forgetting effect would generalize to testing procedures other than category-cued recall. Although the authors demonstrated a retrieval-induced forgetting effect using a category-cued recall task, they failed to show retrieval-induced forgetting on several different memory tests that used item-specific cues, including a category-plus-stem-cued recall test, a category-plus-fragment-cued recall test, a fragment-cued recall test, and a fragment completion task. 相似文献
90.
In this study, we examined the impact of childhood interpersonal adversity on adulthood subjective well-being (SWB), with a focus on the mediating and moderating effects of social support and socioeconomic status (SES). We concentrated on parental maltreatment (abuse and neglect) and bullying in school as childhood adversity variables and on perceived happiness and self-rated health as adulthood SWB measures. Our empirical analysis was based on micro data from a survey in municipalities in and around the Tokyo metropolitan area (N = 3,292). We obtained four key findings. First, the experience of childhood adversity had a substantial negative impact on adulthood SWB. Second, social support and SES significantly mediated the impact of childhood adversity. Third, however, a large proportion of the impact of childhood adversity remained unexplained by their mediation effects. Fourth, social support and SES did not moderate the impact of childhood adversity. Hence, we can conclude that childhood adversity affects adulthood SWB in a relatively independent manner rather than being substantially mediated or moderated by social support or SES. Accordingly, social policies should aim at reducing incidents of childhood maltreatment and bullying in addition to helping people enhance levels of social support and SES in later life. 相似文献