Home About us Contact
|
Home About us Contact | ||
|
|
||
Long Time Intervals (long + time_interval)
Selected AbstractsThe effects of aging on nostalgia in consumers' advertisement processingJAPANESE PSYCHOLOGICAL RESEARCH, Issue 3 2010TAKASHI KUSUMI Abstract We investigated the triggers and functions of nostalgia in consumers' processing of television advertisements in relation to aging. Study 1 explored the contents and triggers of nostalgic experiences by requesting 451 undergraduates to write four different nostalgic descriptions (of scenes, songs, events, and commercials). An analysis of the descriptions using text mining revealed that nostalgic reactions occur in response to events that had been frequently repeated in the past and were separated from the present by a long time interval. Study 2 explored the functions of nostalgia among 737 consumers (15,65 years old) using a survey. Structural equation modeling revealed five steps in the processing of nostalgic advertisements. Aging facilitates a predisposition toward nostalgia. Highly nostalgic consumers are more sensitive to nostalgic triggers. Nostalgic triggers facilitate the retrieval of past events and memorization of advertisements that evoke familiarity and positive attitudes, which, in turn, facilitates the intention to purchase. Nostalgic predispositions and sensitivity to nostalgic triggers increase with age. This tendency was higher among men than among women. We proposed a model of nostalgia based on frequent repetition in the past and a long time-lag between the nostalgia-inducing event and the present. [source] The stellar dynamics of spiral arms in barred spiral galaxiesMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: LETTERS (ELECTRONIC), Issue 1 2006P. A. Patsis ABSTRACT A dynamical mechanism is proposed that explains the spiral structure observed frequently as a continuation of the bars in barred spiral galaxies. It is argued that the part of the spirals attached to the bar is due to chaotic orbits. These are chaotic orbits that exhibit for long time intervals a 4:1-resonance orbital behaviour. They are of the same type of orbit as is responsible for the boxiness of the outer isophotes of the bar in cases like NGC 4314, as indicated by Patsis, Athanassoula & Quillen. The spirals formed this way are faint with respect to the bar, open as they wind out, and do not extend over an angle larger than ,/2. A possible continuation of the spiral structure towards larger angles can be due to orbits trapped around stable periodic orbits at the corotation region. We present a family of stable, banana-like periodic orbits, precessing as EJ increases, that can play this role. [source] Deficits in interval timing measured by the dual-task paradigm among children and adolescents with attention-deficit/hyperactivity disorderTHE JOURNAL OF CHILD PSYCHOLOGY AND PSYCHIATRY AND ALLIED DISCIPLINES, Issue 3 2010Shoou-Lian Hwang Background:, The underlying mechanism of time perception deficit in long time intervals in attention-deficit/hyperactivity disorder (ADHD) is still unclear. This study used the time reproduction dual task to explore the role of the attentional resource in time perception deficits among children and adolescents with ADHD. Methods:, Participants included 168 children and adolescents with DSM-IV ADHD and 90 control children and adolescents without ADHD, aged 10 to 17 years, in Taipei. The DSM-IV diagnoses of ADHD and other psychiatric comorbid conditions were made by clinical assessments and confirmed by the psychiatric interviews of both parents and participants using the Chinese Kiddie Epidemiologic version of the Schedule for Affective Disorders and Schizophrenia. The participants were also assessed by using the Wechsler Intelligence Scale for Children-3rd edition (WISC-III), and time reproduction tasks (the single task and the simple and difficult versions of the dual tasks) at 5-second, 12-second, and 17-second intervals. The linear mixed model was used for data analysis. Results:, Children and adolescents with ADHD had less precise time reproduction than the controls in all three tasks except the 5-second interval of the single task. There were significant interactions between group and interval (12-second vs. 5-second, p = .030; 17-second vs. 5-second, p < .001), and between group and task (simple dual task vs. single task, p = .016; difficult dual task vs. single task, p < .001) after controlling for FSIQ, comorbidity, sex, age, use of methylphenidate, and the performance of the non-temporal tasks in dual tasks, if relevant. Conclusions:, Significantly increased estimation errors in ADHD with increased task difficulties suggest that impaired timing processing in children and adolescents with ADHD during long time intervals may be accounted for by the limited attentional capacity rather than a primary problem in timing per se. This finding does not apply to rapid time intervals, in which cerebellar circuitry is important. [source] Long-time dynamics of KdV solitary waves over a variable bottomCOMMUNICATIONS ON PURE & APPLIED MATHEMATICS, Issue 6 2006Steven I. Dejak We study the variable-bottom, generalized Korteweg,de Vries (bKdV) equation ,tu = ,,x(,u + f(u) , b(t,x)u), where f is a nonlinearity and b is a small, bounded, and slowly varying function related to the varying depth of a channel of water. Many variable-coefficient KdV-type equations, including the variable-coefficient, variable-bottom KdV equation, can be rescaled into the bKdV. We study the long-time behavior of solutions with initial conditions close to a stable, b = 0 solitary wave. We prove that for long time intervals, such solutions have the form of the solitary wave whose center and scale evolve according to a certain dynamical law involving the function b(t,x) plus an H1(,)-small fluctuation. © 2005 Wiley Periodicals, Inc. [source] | ||||||||||