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Viewing
Kinds of Viewing Terms modified by Viewing Selected AbstractsConcurrent Viewing of Multiple Attribute-Specific SubspacesCOMPUTER GRAPHICS FORUM, Issue 3 2008Robert Sisneros Abstract In this work we present a point classification algorithm for multi-variate data. Our method is based on the concept of attribute subspaces, which are derived from a set of user specified attribute target values. Our classification approach enables users to visually distinguish regions of saliency through concurrent viewing of these subspaces in single images. We also allow a user to threshold the data according to a specified distance from attribute target values. Based on the degree of thresholding, the remaining data points are assigned radii of influence that are used for the final coloring. This limits the view to only those points that are most relevant, while maintaining a similar visual context. [source] The Animated Muse: An Interpretive Program for Creative ViewingCURATOR THE MUSEUM JOURNAL, Issue 3 2005Austin Clarkson ABSTRACT Explore a Painting in Depth, an experiment presented in the Canadian Collection of the Art Gallery of Ontario, consisted of a booth that offered seating for two visitors and, opposite them, The Beaver Dam, a 1919 landscape painting by the Canadian artist J. E. H. MacDonald. In a 12-minute audio-guided Exercise for Exploring, visitors were invited to engage in a creative process with the imagery of the painting. This paper sketches how the experiment evolved, presents the background of the Exercise for Exploring, and surveys the effects of the exhibit on a wide range of visitors. The question is raised: How can facilitating visitors' creative responses to artworks be part of the museum's educational mandate and its arsenal of interpretive resources? More broadly: Do strategies that foster and privilege visitor creativity, as well as honor the creativity of artists, affect the accessibility and relevance of the museum for the general public? [source] The bi-criteria doubly weighted center-median path problem on a treeNETWORKS: AN INTERNATIONAL JOURNAL, Issue 4 2006J. Puerto Abstract Given a tree network T with n nodes, let ,,L be the subset of all discrete paths whose length is bounded above by a prespecified value L. We consider the location of a path-shaped facility P , ,,L, where customers are represented by the nodes of the tree. We use a bi-criteria model to represent the total transportation cost of the customers to the facility. Each node is associated with a pair of nonnegative weights: the center-weight and the median-weight. In this doubly weighted model, a path P is assigned a pair of values (MAX(P),SUM(P)), which are, respectively, the maximum center-weighted distance and the sum of the median-weighted distances from P to the nodes of the tree. Viewing ,,L and the planar set {(MAX(P),SUM(P)) : P , ,,L} as the decision space and the bi-criteria or outcome space respectively, we focus on finding all the nondominated points of the bi-criteria space. We prove that there are at most 2n nondominated outcomes, even though the total number of efficient paths can be ,(n2), and they can all be generated in O(n log n) optimal time. We apply this result to solve the cent-dian model, whose objective is a convex combination of the weighted center and weighted median functions. We also solve the restricted models, where the goal is to minimize one of the two functions MAX or SUM, subject to an upper bound on the other one, both with and without a constraint on the length of the path. All these problems are solved in linear time, once the set of nondominated outcomes has been obtained, which in turn, results in an overall complexity of O(n log n). The latter bounds improve upon the best known results by a factor of O(log n). © 2006 Wiley Periodicals, Inc. NETWORKS, Vol. 47(4), 237,247 2006 [source] An Energy Model for Viewing Embodied Human Capital TheoryPERFORMANCE IMPROVEMENT QUARTERLY, Issue 1 2007Neil A. Kaufman Human capital development is one of the emerging areas of study with regard to social science theory, practice, and research. Arelatively new concept, human capital is described in terms of individual knowledge skills and experience. It is currently expressed as a function of education as well as a measure of economic activity. Little theory exists to establish models of individual or group human capital. By drawing upon existing physical science constructs such as embodied energy, this article applies a framework for articulating an approach to human capital development and interaction. Our proposition is that human capital consists of active and passive capacity, which parallels the theoretic dimensions of potential and kinetic energy. Aconceptual binary phase diagram of a human capital system is presented along with examples for applying the model to practice. Utilizing an economic model of resource flows; a model of embodied human capital is developed as a vehicle for sustainable human capital theory. [source] Decreasing household television time: a pilot study of a combined behavioral and environmental interventionBEHAVIORAL INTERVENTIONS, Issue 4 2006Amy Gorin Excessive TV viewing is associated with weight gain across the lifespan; thus developing strategies to decrease household viewing time may be an effective obesity prevention approach. This pilot study (n,=,6 families) examined the feasibility and short-term impact of a 2-pronged environmental plus behavioral approach designed to reduce TV time in the entire family. The environmental manipulation involved placing TV Allowances (programmed to turn off power after family members had watched 75% of their baseline hours) on all TVs in the home. A kit with behavioral strategies for reducing TV time was also sent to the home each week and family members self-monitored viewing time. Viewing was objectively assessed with the TV Allowances at baseline and at 8,weeks. A significant decrease in objectively measured TV viewing hours was observed, t(5),=,3.1, p,=,0.03, 29.8,±,10.3 versus 14.9,±,6.0,h (equivalent of decreasing from 7.5 to 3.7,h per day). Fifty percent of families reduced their viewing time by ,50%. The acceptability of the intervention was high, with 100% of families reporting they would recommend the TV Allowances to others. Further research is needed to test the long-term efficacy of the program and its impact on weight. Copyright © 2006 John Wiley & Sons, Ltd. [source] Viewing and attention in childrenACTA PAEDIATRICA, Issue 10 2009C Lange-Küttner No abstract is available for this article. [source] Concurrent Viewing of Multiple Attribute-Specific SubspacesCOMPUTER GRAPHICS FORUM, Issue 3 2008Robert Sisneros Abstract In this work we present a point classification algorithm for multi-variate data. Our method is based on the concept of attribute subspaces, which are derived from a set of user specified attribute target values. Our classification approach enables users to visually distinguish regions of saliency through concurrent viewing of these subspaces in single images. We also allow a user to threshold the data according to a specified distance from attribute target values. Based on the degree of thresholding, the remaining data points are assigned radii of influence that are used for the final coloring. This limits the view to only those points that are most relevant, while maintaining a similar visual context. [source] A Parametric Approach to Flexible Nonlinear InferenceECONOMETRICA, Issue 3 2001James D. Hamilton This paper proposes a new framework for determining whether a given relationship is nonlinear, what the nonlinearity looks like, and whether it is adequately described by a particular parametric model. The paper studies a regression or forecasting model of the form yt=,(xt)+,t where the functional form of ,(,) is unknown. We propose viewing ,(,) itself as the outcome of a random process. The paper introduces a new stationary random field m(,) that generalizes finite-differenced Brownian motion to a vector field and whose realizations could represent a broad class of possible forms for ,(,). We view the parameters that characterize the relation between a given realization of m(,) and the particular value of ,(,) for a given sample as population parameters to be estimated by maximum likelihood or Bayesian methods. We show that the resulting inference about the functional relation also yields consistent estimates for a broad class of deterministic functions ,(,). The paper further develops a new test of the null hypothesis of linearity based on the Lagrange multiplier principle and small-sample confidence intervals based on numerical Bayesian methods. An empirical application suggests that properly accounting for the nonlinearity of the inflation-unemployment trade-off may explain the previously reported uneven empirical success of the Phillips Curve. [source] The effects of acute exercise on attentional bias towards smoking-related stimuli during temporary abstinence from smokingADDICTION, Issue 11 2009Kate Janse Van Rensburg ABSTRACT Rationale Attentional bias towards smoking-related cues is increased during abstinence and can predict relapse after quitting. Exercise has been found to reduce cigarette cravings and desire to smoke during temporary abstinence and attenuate increased cravings in response to smoking cues. Objective To assess the acute effects of exercise on attentional bias to smoking-related cues during temporary abstinence from smoking. Method In a randomized cross-over design, on separate days regular smokers (n = 20) undertook 15 minutes of exercise (moderate intensity stationary cycling) or passive seating following 15 hours of nicotine abstinence. Attentional bias was measured at baseline and post-treatment. The percentage of dwell time and direction of initial fixation was assessed during the passive viewing of a series of paired smoking and neutral images using an Eyelink II eye-tracking system. Self-reported desire to smoke was recorded at baseline, mid- and post-treatment and post-eye-tracking task. Results There was a significant condition × time interaction for desire to smoke, F(1,18) = 10.67, P = 0.004, eta2 = 0.36, with significantly lower desire to smoke at mid- and post-treatment following the exercise condition. The percentage of dwell time and direction of initial fixations towards smoking images were also reduced significantly following the exercise condition compared with the passive control. Conclusion Findings support previous research that acute exercise reduces desire to smoke. This is the first study to show that exercise appears to also influence the salience and attentional biases towards cigarettes. [source] Improving clinical assessment: evaluating students' ability to identify and apply clinical criteriaEUROPEAN JOURNAL OF DENTAL EDUCATION, Issue 3 2010C. Redwood Abstract Aim:, There is ongoing concern by health educators over the inability of professionals to accurately self-assess their clinical behaviour and standards, resulting in doubts over a key expectation of effective self-regulation in the health professions. Participation by students in the assessment process has been shown to increase the understanding of assessment criteria in written assessment tasks. How this might transfer to the clinical setting is the focus of this study. This paper is part of an ongoing investigation of the impact on learning of a series of activities that provides students with opportunities to discuss and apply criteria and standards associated with self-assessment in clinical dentistry. Our aim was to evaluate whether participation in these assessment activities improved the ability of first-year dental students to recognise behaviours demonstrated by ,peers' in videos of clinical scenarios and to relate these to the assessment criteria. Materials and methods:, A series of three workshops in conjunction with weekly clinical assessment activities in Semesters 1 and 2 were use to support first-year students' learning of clinical assessment criteria. The design of the workshops was based on the principles of social constructivist theories of learning and the concept of tacit knowledge. Accordingly workshop activities were planned around videos that were specifically constructed to illustrate procedures and behaviours typical of those observed by staff and tutors in the first year of the dental course at The University of Adelaide, Australia. First-year students viewed the videos prior to and after the workshops and recorded observed behaviours that related to the assessment criteria that were used in their clinical practice course. Student learning outcomes were assessed 10,14 weeks after the initial workshop and again up to 42 weeks later. To check whether learning resulted from repeated viewing of the videos without formal discussion, a reference group of third-year students who did not attend the workshops also viewed the videos two times, separated by 12 weeks, and recorded observations in the same way. Results:, There was no consistent evidence that repeat viewing of the videos in isolation resulted in improved recognition of ,peer' behaviours by third-year dental students. Results for the first-year students indicated that the workshops and clinical assessment activities had a significantly positive effect on the ability of students to identify ,peer' behaviours related to the criteria used for clinical assessment. In particular, students' recognition in others of knowledge and professional behaviours improved significantly. This improvement was retained over the year and students were able to recognise these behaviours in other scenarios relevant to their year level. Conclusions:, This early exposure to the process of clinical assessment, coupled with ongoing self-assessment and tutor feedback throughout first year, improved the ability of first-year students to identify and apply some key assessment criteria to observed ,peer' behaviour, and this ability was retained over time. [source] Neurons in primary motor cortex engaged during action observationEUROPEAN JOURNAL OF NEUROSCIENCE, Issue 2 2010Juliana Dushanova Abstract Neurons in higher cortical areas appear to become active during action observation, either by mirroring observed actions (termed mirror neurons) or by eliciting mental rehearsal of observed motor acts. We report the existence of neurons in the primary motor cortex (M1), an area that is generally considered to initiate and guide movement performance, responding to viewed actions. Multielectrode recordings in monkeys performing or observing a well-learned step-tracking task showed that approximately half of the M1 neurons that were active when monkeys performed the task were also active when they observed the action being performed by a human. These ,view' neurons were spatially intermingled with ,do' neurons, which are active only during movement performance. Simultaneously recorded ,view' neurons comprised two groups: approximately 38% retained the same preferred direction (PD) and timing during performance and viewing, and the remainder (62%) changed their PDs and time lag during viewing as compared with performance. Nevertheless, population activity during viewing was sufficient to predict the direction and trajectory of viewed movements as action unfolded, although less accurately than during performance. ,View' neurons became less active and contained poorer representations of action when only subcomponents of the task were being viewed. M1 ,view' neurons thus appear to reflect aspects of a learned movement when observed in others, and form part of a broadly engaged set of cortical areas routinely responding to learned behaviors. These findings suggest that viewing a learned action elicits replay of aspects of M1 activity needed to perform the observed action, and could additionally reflect processing related to understanding, learning or mentally rehearsing action. [source] Effects of attention and arousal on early responses in striate cortexEUROPEAN JOURNAL OF NEUROSCIENCE, Issue 1 2005Vahe Poghosyan Abstract Humans employ attention to facilitate perception of relevant stimuli. Visual attention can bias the selection of a location in the visual field, a whole visual object or any visual feature of an object. Attention draws on both current behavioral goals and/or the saliency of physical attributes of a stimulus, and it influences activity of different brain regions at different latencies. Attentional effect in the striate and extrastriate cortices has been the subject of intense research interest in many recent studies. The consensus emerging from them places the first attentional effects in extrastriate areas, which in turn modulate activity of V1 at later latencies. In this view attention influences activity in striate cortex some 150 ms after stimulus onset. Here we use magnetoencephalography to compare brain responses to foveally presented identical stimuli under the conditions of passive viewing, when the stimuli are irrelevant to the subject and under an active GO/NOGO task, when the stimuli are cues instructing the subject to make or inhibit movement of his/her left or right index finger. The earliest striate activity was identified 40,45 ms after stimulus onset, and it was identical in passive and active conditions. Later striate response starting at about 70 ms and reaching a peak at about 100 ms showed a strong attentional modulation. Even before the striate cortex, activity of the right inferior parietal lobule was modulated by attention, suggesting this region as a candidate for mediating attentional signals to the striate cortex. [source] Neuroanatomical correlates of the near response: voluntary modulation of accommodation/vergence in the human visual systemEUROPEAN JOURNAL OF NEUROSCIENCE, Issue 1 2000Hans O. Richter Abstract This study identifies brain regions participating in the execution of eye movements for voluntary positive accommodation (VPA) during open-loop vergence conditions. Neuronal activity was estimated by measurement of changes in regional cerebral blood flow (rCBF) with positron emission tomography and 15O-water. Thirteen naive volunteers viewed a checkerboard pattern with their dominant right eye, while a lens interrupted the line of gaze during alternate 1.5 s intervals. Three counterbalanced tasks required central fixation and viewing of a stationary checkerboard pattern: (i) through a 0.0 diopter (D) lens; (ii) through a ,5.0-D lens while avoiding volitional accommodation and permitting blur; and (iii) through a ,5.0-D lens while maintaining maximal focus. The latter required large-amplitude, high-frequency VPA. As an additional control, seven of the subjects viewed passively a digitally blurred checkerboard through a 0.0-D lens as above. Optometric measurements confirmed normal visual acuity and ability to perform the focusing task (VPA). Large-amplitude saccadic eye movements, verified absent by electro-oculography, were inhibited by central fixation. Image averaging across subjects demonstrated multifocal changes in rCBF during VPA: striate and extrastriate visual cortices; superior temporal cortices; and cerebellar cortex and vermis. Decreases in rCBF occurred in the lateral intraparietal area, prefrontal and frontal and/or supplementary eye fields. Analysis of regions of interest in the visual cortex showed systematic and appropriate task dependence of rCBF. Activations may reflect sensorimotor processing along the reflex arc of the accommodation system, while deactivations may indicate inhibition of systems participating in visual search. [source] Supraspinal Modulation of Trigeminal Nociception and PainHEADACHE, Issue 5 2009Amy E. Williams MA Objective., This study examined modulation of trigeminal pain/nociception by 2 supraspinal mechanisms: emotional controls of nociception and diffuse noxious inhibitory controls. Background., Prior research suggests emotional picture viewing (emotional controls) and tonic noxious stimuli (diffuse noxious inhibitory controls) engage supraspinal mechanisms to modulate pain and nociceptive processes. It is currently unknown, however, whether emotional controls modulate trigeminal pain and nociception. Additionally, the influences of emotional controls and diffuse noxious inhibitory controls have not been compared in the same group of participants. Methods., Noxious electrodermal stimuli were delivered to the trigeminal nerve using a concentric electrode designed to selectively activate nociceptive fibers. Trigeminal nociception and pain were assessed (34 participants) from the nociceptive blink reflex and pain ratings, respectively. Emotional controls were engaged by presentation of standardized picture stimuli (pleasant, neutral, and unpleasant) shown to reliably evoke pleasure-induced inhibition and displeasure-induced facilitation of pain and nociception. Diffuse noxious inhibitory controls were engaged with a forearm ischemia task. Results., Trigeminal pain (self-report ratings) and nociception (blinks) were facilitated by unpleasant pictures and inhibited by pleasant pictures. Emotion induction (as assessed from trend analysis) explained 51% of the variance in trigeminal pain and 25% of the variance in trigeminal nociception. Additionally, forearm ischemia inhibited trigeminal pain but not nociception. The baseline vs ischemia comparison explained 17% of the variance in pain report and 0.1% of the variance in blinks. Supraspinal modulation by emotional controls and diffuse noxious inhibitory controls were uncorrelated. Conclusions., Emotional controls and diffuse noxious inhibitory controls modulated trigeminal pain and emotional controls modulated trigeminal nociception. These procedures can be used to study supraspinal modulation of nociceptive processing in disorders of the trigeminal pain system, including headache. [source] Posterior cingulate activation during moral dilemma in adolescentsHUMAN BRAIN MAPPING, Issue 8 2008Jesus Pujol Abstract Neuroimaging research examining correlates of adolescent behavioral maturation has focused largely on issues related to higher cognitive development. Currently few studies have explored neural correlates of emotional reactivity in adolescent groups. In this study, we sought to examine the nature of posterior cingulate activation during situations of moral dilemma in normal adolescents. We focused on this region because of emerging evidence that suggests its role in emotionally self-relevant mental processing. Ten healthy teenagers, aged from 14 to 16 years, underwent three fMRI sequences designed to examine (i) brain responses during moral dilemma; (ii) brain responses during passive viewing of the moral dilemma outcome; and (iii); "deactivation" during a simple cognitive task compared with resting-state activity. Our main finding was that during moral dilemma, all subjects showed significant activation of the posterior cingulate cortex, and more variable activation of the medial frontal cortex and angular gyrus. Interestingly, these findings were replicated in each subject using the passive viewing task, suggesting that the previous pattern was not specific to moral reasoning or decision making. Finally, six of the ten subjects showed deactivation of the same posterior cingulate region during the cognitive task, indicating some commonality of function between posterior cingulate activity during moral dilemmas and rest. We propose that these posterior cingulate changes may relate to basic neuronal activities associated with processing self-relevant emotional stimuli. Given the high single-subject reproducibility of posterior cingulate activations, our findings may contribute to further characterize adolescent emotional reactivity in developmental neuroimaging studies. Hum Brain Mapp, 2008. © 2007 Wiley-Liss, Inc. [source] Imaging brain activity during natural vision using CASL perfusion fMRIHUMAN BRAIN MAPPING, Issue 7 2007Hengyi Rao Abstract Functional MRI (fMRI) has begun to be used to explore human brain activity during ecological and natural conditions. Arterial spin labeling (ASL) perfusion fMRI provides an appealing approach for imaging sustained brain activity during natural conditions because of its long-term temporal stability and ability to noninvasively quantify absolute cerebral blood flow (CBF). The present study used ASL perfusion fMRI to measure brain activation patterns associated with natural vision by concurrently recording CBF and blood oxygen level-dependent (BOLD) contrasts while subjects were freely viewing a cartoon movie. Reliable quantitative whole-brain CBF values (,60 mL/100g/min) as well as regional CBF values (45,80 mL/100g/min) were measured during movie viewing and resting states. The perfusion contrast revealed CBF increases in multiple visual pathway areas and frontal areas, and CBF decreases in ventromedial frontal cortex and superior temporal cortex during movie viewing compared to resting states. Concurrent BOLD contrast revealed similar but weaker activation and deactivation patterns. Regression analyses of both CBF data and BOLD data showed significant associations between activation in the middle temporal (MT) region and subjects' perception of motion. Region of interest analysis based on a priori literature-defined MT demonstrated significant monotonic stepwise associations between the intensity of motion perception and the CBF and BOLD signal changes. These results demonstrate the feasibility of using ASL perfusion fMRI for imaging both sustained and dynamic effects in neural activation during natural and ecologically valid situations, and support the notion of maintained functional segregation and specialization during natural vision. Hum Brain Mapp, 2006. © 2006 Wiley-Liss, Inc. [source] Functional brain mapping during free viewing of natural scenesHUMAN BRAIN MAPPING, Issue 2 2004Andreas Bartels Abstract Previous imaging studies have used mostly perceptually abstracted, idealized, or static stimuli to show segregation of function in the cerebral cortex. We wanted to learn whether functional segregation is maintained during more natural, complex, and dynamic conditions when many features have to be processed simultaneously, and identify regions whose activity correlates with the perception of specific features. To achieve this, we used functional magnetic resonance imaging (fMRI) to measure brain activity when human observers viewed freely dynamic natural scenes (a James Bond movie). The intensity with which they perceived different features (color, faces, language, and human bodies) was assessed psychometrically in separate sessions. In all subjects different features were perceived with a high degree of independence over time. We found that the perception of each feature correlated with activity in separate, specialized areas whose activity also varied independently. We conclude that even in natural conditions, when many features have to be processed simultaneously, functional specialization is preserved. Our method thus opens a new way of brain mapping, which allows the localization of a multitude of brain areas based on a single experiment using uncontrolled, natural stimuli. Furthermore, our results show that the intensity of activity in a specialized area is linearly correlated with the intensity of its perceptual experience. This leads us to suggest that each specialized area is directly responsible for the creation of a feature-specific conscious percept (a microconsciousness). Hum. Brain Mapp. 21:75,83, 2004. © 2003 Wiley-Liss, Inc. [source] Observing Purchase-Related Parent,Child Communication in Retail Environments: A Developmental and Socialization PerspectiveHUMAN COMMUNICATION RESEARCH, Issue 1 2008Moniek Buijzen In a quantitative observation study, we unobtrusively examined purchase-related communication between 0- to 12-year-old children and their parents (N= 269 dyads) during supermarket and toy store visits. The aims of the study were to determine (a) the development of purchase-related parent,child communication (i.e., children's purchase influence attempts, their coercive behavior, parent-initiated communication) and (b) the relative influence of different socialization variables (e.g., television viewing, family communication patterns) on these communication variables. Our inverted-U hypothesis for the effect of developmental level on purchase influence attempts received support: Children's purchase influence attempts increased until early elementary school and started to decline in late elementary school. Our inverted-U hypothesis for the effect of developmental level on coercive behavior was also supported: Children's coercive behavior was highest among preschoolers. With increasing age, children were more likely to be involved in the purchase decision-making process, and parent,child communication more often resulted in a product purchase. Finally, children's television viewing was the most important (positive) predictor of their purchase influence attempts. Résumé L'observation dans des environnements commerciaux de la communication parent-enfant liée à l,achat: Une perspective du développement et de la socialisation Dans une étude quantitative par observation, nous avons discrètement examiné la communication liée à l'achat entre des enfants de 0 à 12 ans et leurs parents (N= 269 dyades) au cours de visites dans des supermarchés et des boutiques de jouets. Les objectifs de l'étude étaient de déterminer a) le développement de la communication parent-enfant liée à l,achat (c.-à-d. les tentatives des enfants d'influencer l,achat, leur comportement coercitif ainsi que la communication initiée par le parent) et b) l'influence relative de différentes variables de socialisation (par exemple l'écoute de la télévision ou les schémas de communication familiaux) sur ces variables communicationnelles. Notre hypothèse en U inversé concernant l,effet du niveau de développement sur les tentatives d'influence d,achat fut appuyée : les tentatives des enfants d'influencer les achats ont augmenté jusqu,au début de l'école élémentaire et ont commencéà décliner à la fin de l'école élémentaire. Notre hypothèse en U inversé supposant des effets du niveau de développement sur le comportement coercitif fut aussi appuyée : le comportement coercitif fut le plus élevé chez les enfants d'âge préscolaire. Plus l'âge augmentait et plus les enfants étaient susceptibles d'être impliqués dans le processus décisionnel d'achat, et la communication parent-enfant résultait plus souvent en l,achat d'un produit. Finalement, l'écoute télévisuelle des enfants était la variable explicative (positive) la plus importante de leurs tentatives d,influence des achats. Abstract Beobachtung von kaufbezogener Elternteil-Kind-Kommunikation in Einzelhandelsumgebungen: Eine Entwicklungs- und Sozialisationsperspektive In einer quantitativen Beobachtungsstudie untersuchten wir verdeckt die kaufbezogene Kommunikation zwischen Kindern (0-12 Jahre) und einem Elternteil (N=269 Dyaden) während ihres Besuchs im Supermarkt oder Spielzeugladen. Ziele der Studie waren: a) die Entwicklung von kaufbezogener Kommunikation zwischen Elternteil und Kind und b) den relativen Einfluss verschiedener Sozialisationsvariablen (z.B. Fernsehnutzung, Familienkommunikationsmuster) auf diese Variablen zu untersuchen. Unsere umgekehrte U-Hypothese bezüglich des Einflusses des Entwicklungsstadiums auf den Grad der Einflussnahmeversuche auf den Kauf wurde gestützt: Die Einflussnahmeversuche nahmen bis zur frühen Grundschulzeit zu und gingen in der späten Grundschulzeit zurück. Unsere umgekehrte U-Hypothese bezüglich des Einflusses des Entwicklungsstadiums auf erzwingendes Verhalten wurde auch bestätigt: erzwingendes Verhalten von Kindern war am stärksten im Vorschulalter. Mit zunehmendem Alter wurden Kinder mehr in Kaufentscheidungsprozesse einbezogenen und die Eltern-Kind-Kommunikation resultierte häufiger im Kauf des Produkts. Letztendlich zeigte sich, dass das Fernsehnutzungsverhalten der Kinder der wichtigste (positive) Prädiktor für Kaufeinflussversuche war. Resumen Observando la Comunicación entre Padres y Niños durante las Compras en los Ambientes de Venta al por Menor: Una Perspectiva de Desarrollo y Socialización En un estudio de observación cuantitativa, examinamos de manera discreta la comunicación relacionada con la compra entre niños de 0- a 12-anos de edad y sus padres (N= 269 dúos) durante sus visitas al supermercado y las tiendas de juguetes. Los propósitos de este estudio fueron determinar (a) el desarrollo de la comunicación entre padres e hijos durante las compras (a saber, los intentos de los niños de influir en la compra, el comportamiento coercitivo, la comunicación iniciada por los padres), y (b) la influencia relativa de las diferentes variables de socialización (a saber, exposición a la televisión, pautas de comunicación familiar) sobre estas variables de comunicación. Nuestra hipótesis U invertida para los efectos del nivel de desarrollo sobre los intentos de influencia de compra recibieron apoyo: Los intentos de los niños de influir en la compra incrementaron hasta antes de la escuela primaria y comenzó a declinar más tarde en la escuela primaria. Nuestra hipótesis U invertida para los efectos del nivel de desarrollo sobre el comportamiento coercitivo recibieron apoyo: El comportamiento coercitivo fue mayor durante la etapa pre-escolar. Con el aumento de la edad, los niños se involucraron más probablemente en el proceso de decisión de compra, y la comunicación padre-hijo resultó más a menudo en la compra de un producto. Finalmente, la exposición de los niños a la televisión fue el vaticinador más importante (positivo) de sus intentos de influencia de compra. ZhaiYao Yo yak [source] The Social Capital of Blacks and Whites: Differing Effects of the Mass Media in the United StatesHUMAN COMMUNICATION RESEARCH, Issue 2 2006Christopher E. Beaudoin This study relied on telephone survey interviews of adults in two U.S. metropolitan areas to examine whether the relationship between mass media use and social capital varies according to ethnicity. A multigroup approach taken with structural equation modeling validates a four-factor model of social capital for Blacks and Whites and then, with the implementation of a comprehensive model that also includes mass media inputs, tests for structural variance between the ethnic groups. A well-fitting comprehensive model is achieved, with significant differences between Blacks and Whites in terms of the mass media use structures. In support of the two hypotheses, the relationship between news use and social capital is less positive for Blacks than for Whites and the relationship between entertainment TV viewing and social capital is more negative for Blacks than for Whites. These findings are discussed in terms of literature involving mass media effects on social capital, news coverage of ethnic groups, and ethnic differences in self-conceptualization and media responses. [source] Microscopic high-resolution digital volumetric imaging of human hair fibersINTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Issue 2 2005J. V. Gruber Methods for examining cationic polymer deposition on hair are well known and polymers such as Polyquaternium-10 have enjoyed a significant commercial impact on shampoos and body washes as unique conditioning materials. It was recently reported that hair can be examined using a new microscopic called Digital Volumetric Imaging or DVI (10). By employing fluorescent dyes, deposition of cationic oligosaccharides onto damaged blond hair fibers was discussed. Because hair auto-fluorescences, the microscope allows for examination of hair fibers directly including viewing of the cuticle, cortex and melanin within the cortex and careful imaging even distinguishes the medulla of the hair fiber. In this paper, examination of six virgin hair types including: (1) Afro-American, (2) Asian, (3) European brown, (4) red, (5) blond and (6) gray was conducted looking for differences that each hair type brings to the visualizing technique. Digital manipulation of the fluorescent data allows for examination of interior hair fiber structures as well as the development of animated movies of three dimensional hair fiber structures. [source] Influence of background and surround on image color matchingINTERNATIONAL JOURNAL OF IMAGING SYSTEMS AND TECHNOLOGY, Issue 4 2007Lidija Mandic Abstract In this article, the corresponding-color data for complex images reproduced on different media were obtained by simultaneous matching using an adjustment method. In our experiment printed color images and images displayed on a monitor were compared in different viewing conditions. The viewing condition varied in surround relative luminance and background. The experimental data show that surround relative luminance has little influence on color matching between printed and monitor images while changes in background modify color appearance. These results were used to evaluate different chromatic adaptation transforms (CAT). We found that for the same viewing conditions the SHARP transform shows the best agreement between the experimental and predicted data. SHARP transform can not predict accurately corresponding colors for blue and black regions. Therefore, we proposed new CAT that shows better characteristics than other transforms for cyan, green, and black colors and similar characteristics for other colors. © 2007 Wiley Periodicals, Inc. Int J Imaging Syst Technol, 17, 244,251, 2007 [source] TV viewing and physical activity: a segment analysis for social marketingINTERNATIONAL JOURNAL OF NONPROFIT & VOLUNTARY SECTOR MARKETING, Issue 3 2008Satyendra Singh Elevated television viewing and physical inactivity promote sedentary behavior, leading to obesity. Yet, modifying the behavior has received a limited academic investigation. Thus, the purpose of this exploratory study is to develop segments relating to such behavior, and propose TV viewing-reduction and physical activity-enhancing strategies for the various segments. Using data from a mall, the multiple regression and analysis of variance (ANOVA) led to the identification of four segments: alert, inactive, action, and ideal. Results indicate that those engaged in physical activity appear to watch less TV, and that age and gender do not have a significant impact on TV viewing. The managers can use the findings, segments, and strategies to create appeals for target social marketing. Copyright © 2007 John Wiley & Sons, Ltd. [source] Visual ergonomics of head-mounted displaysJAPANESE PSYCHOLOGICAL RESEARCH, Issue 4 2000Marino Menozzi Head-mounted displays (HMDs) are increasingly used in the field and in the laboratory. Prolonged use of HMDs requires their ergonomics to be optimized in order to reduce discomfort. Among factors causing visual load are the physical/optical properties of eyepieces used in HMDs. Many HMD eyepieces are adjusted manually to fit the individual requirements of the user. Proper adjustment of the eyepieces requires some knowledge of visual ergonomics. Additionally, in order to enable comfortable viewing, restrictions on the visual information presented in HMDs, such as the motion of objects in virtual depth, must be considered. Visual performance and therefore visual load depends on the display technology used in HMDs. [source] An evaluation of the process and initial impact of disseminating a nursing e-thesisJOURNAL OF ADVANCED NURSING, Issue 5 2009Colin Macduff Abstract Title.,An evaluation of the process and initial impact of disseminating a nursing e-thesis. Aim., This paper is a report of a study conducted to evaluate product, process and outcome aspects of the dissemination of a nursing PhD thesis via an open-access electronic institutional repository. Background., Despite the growth of university institutional repositories which make theses easily accessible via the world wide web, nursing has been very slow to evaluate related processes and outcomes. Method., Drawing on Stake's evaluation research methods, a case study design was adopted. The case is described using a four-phase structure within which key aspects of process and impact are reflexively analysed. Findings., In the conceptualization/re-conceptualization phase, fundamental questions about the purpose, format and imagined readership for a published nursing PhD were considered. In the preparation phase, seven key practical processes were identified that are likely to be relevant to most e-theses. In the dissemination phase email invitations were primarily used to invite engagement. The evaluation phase involved quantitative indicators of initial impact, such as page viewing and download statistics and qualitative feedback on processes and product. Conclusion., Analysis of process and impact elements of e-thesis dissemination is likely to have more than intrinsic value. The advent of e-theses housed in web-based institutional repositories has the potential to transform thesis access and use. It also offers potential to transform the nature and scope of thesis production and dissemination. Nursing scholars can exploit and evaluate such opportunities. [source] Dispelling Myths About Schizophrenia Using FilmJOURNAL OF APPLIED SOCIAL PSYCHOLOGY, Issue 1 2007Patricia Owen Portrayals of schizophrenia in popular film contribute to misinformation about treatment of schizophrenia. Can film by used to educate? This study examined the effectiveness of viewing film portrayals of accurate vs. inaccurate information about schizophrenia in correcting misinformation. A video was constructed consisting of segments from popular movies and documentaries that contrasted inaccurate and accurate illustrations of schizophrenia. College students were randomly assigned to either the video presentation or traditional lecture on schizophrenia, and later tested on their knowledge of schizophrenia. Results showed knowledge improvement following both video and lecture, with video having a greater corrective effect for female students after viewing 3 of the 8 segments. These results are discussed with reference to sex-role socialization and empathetic identification. [source] Usefulness of Intraoperative Real-Time 3D Transesophageal Echocardiography in Cardiac SurgeryJOURNAL OF CARDIAC SURGERY, Issue 6 2008Thierry V. Scohy M.D. Methods: Preoperative transthoral echocardiography (TTE) revealed: hypertrophic ventricular septum (TTE:19.3 mm), systolic anterior motion (SAM) not causing obstruction and malcoaptation of the anterior mitral valve leaflet (AMVL), and posterior mitral valve leaflet (PMVL) with severe mitral regurgitation. Results: Intraoperative TEE with a x7-2t MATRIX-array transducer (Philips, Andover, MA, USA) with a transducer frequency of x7,2 t mHz, connected to a iE33 (Philips), shows us that the main mechanism and site of regurgitation was an AMVL cleft. We also measured a 24.3-mm thickness of the ventricular septum and analyzing the 3D full volume acquisition revealed that there was no SAM. Conclusion: Intraoperative RT3DTEE permitted comprehensive 3D viewing of the mitral valve revealing the mechanism of mitral valve regurgitation, SAM, and the exact width of the hypertrophic ventricular septum. [source] Priming Crime and Activating Blackness: Understanding the Psychological Impact of the Overrepresentation of Blacks as Lawbreakers on Television NewsJOURNAL OF COMMUNICATION, Issue 2 2007Travis L. Dixon Two experiments examined the extent to which U.S. viewers' perceptions that Blacks face structural limitations to success, support for the death penalty, and culpability judgments could be influenced by exposure to racialized crime news. Participants were exposed to a majority of Black suspects, a majority of White suspects, unidentified suspects, and noncrime news stories. In addition, participants' prior news viewing was assessed. In Study 1, heavy news viewers exposed to unidentified perpetrators were less likely than heavy news viewers exposed to noncrime stories to perceive that Blacks face structural limitations to success. In addition, heavy news viewers exposed to unidentified perpetrators were more likely than heavy news viewers exposed to noncrime stories to support the death penalty. In Study 2, participants exposed to a majority of Black suspects were more likely than participants exposed to noncrime stories to find a subsequent race-unidentified criminal culpable for his offense. In addition, heavy news viewers were more likely to exhibit the above effect than light news viewers. The methodological and theoretical implications of these findings are discussed in light of chronic activation and the priming paradigm. [source] Social Influence of an International Celebrity: Responses to the Death of Princess DianaJOURNAL OF COMMUNICATION, Issue 4 2003William J. Brown When Diana, Princess of Wales, was killed in 1997, a massive public outpouring of grief occurred. Six years after her death, the public and the tabloids still debate whether the paparazzi were to blame for her fatal car accident. Previous studies of celebrities suggest that psychological involvement with a celebrity will determine to what extent stories of the celebrity and their subsequent social influence will affect the general public. The same process was examined in this study of Princess Diana. To study this phenomenon, a survey administered immediately after her fatal car accident compared people's level of involvement with Princess Diana to their viewing of stories about her funeral and their attitudes toward the press. Results showed that gender and age similarities predicted involvement with Princess Diana. This involvement, in turn, predicted people's media use in response to her death and their attitudes toward the press. This finding reinforces previous studies that have shown involvement is an important variable that influences both media consumption and media effects. The authors consider implications of this research for investigating the growing international influence of celebrities through mass media. [source] The limited capacity model of mediated message processingJOURNAL OF COMMUNICATION, Issue 1 2000A Lang This paper presents an information-processing model that is directly applicable to the investigation of how mediated messages are processed. It applies the model to the case of television viewing to demonstrate its applicability. It provides a measure for each part of the model. It presents evidence that supports the model in the television-viewing situation. Finally, it demonstrates how the model may be used to further research and understanding in well-known theoretical traditions. This model is not meant to stand in opposition to any of these theories but, rather, should work well with them by providing hypothesized mechanisms that may underlie well-known effects. This model should prove useful both to researchers and, eventually, to message producers. To the extent that we can better understand how the content and structure of messages interact with a viewer's information-processing system to determine which parts and how much of a communication message is remembered, we will make great strides in understanding how people communicate. [source] A multimedia-enhanced collaborative learning environmentJOURNAL OF COMPUTER ASSISTED LEARNING, Issue 1 2000C-K. Looi Abstract The proliferation of the Internet has brought about the notion of online virtual communities. One enabling technology for online communities is multiuser environments such as Multi-User Dimensions (MUDs) and Object-Oriented MUDS (MOOs). These text-based collaborative learning environments have recently have been integrated with the World Wide Web, thus harnessing the graphics and multimedia-rich environments available therein. Learners can directly experience, manipulate, and create objects in their rich multimedia form. MUDs and MOOs are augmented with synchronous collaboration technology that provided simultaneous control and viewing of shared documents and applications. In this paper, we describe a multimedia-enhanced MOO system called SpaceALIVE! and our experiences from a pilot project involving Singapore students who use SpaceALIVE! as a collaborative learning environment are reported. [source] | ||||||||||||||||||||||||||||||||||||||||||||||