6,728 research outputs found
Extended transition rates and lifetimes in Al I and Al II from systematic multiconfiguration calculations
Multiconfiguration Dirac-Hartree-Fock (MCDHF) and relativistic configuration
interaction (RCI) calculations were performed for 28 and 78 states in neutral
and singly ionized aluminium, respectively. In Al I, the configurations of
interest are for with to , as well as and
for . In Al II, the studied configurations are, besides the
ground configuration , with to and to , ,
, and . Valence and core-valence electron correlation
effects are systematically accounted for through large configuration state
function (CSF) expansions. Calculated excitation energies are found to be in
excellent agreement with experimental data from the NIST database. Lifetimes
and transition data for radiative electric dipole (E1) transitions are given
and compared with results from previous calculations and available
measurements, for both Al I and Al II. The computed lifetimes of Al I are in
very good agreement with the measured lifetimes in high-precision laser
spectroscopy experiments. The present calculations provide a substantial amount
of updated atomic data, including transition data in the infrared region. This
is particularly important since the new generation of telescopes are designed
for this region. There is a significant improvement in accuracy, in particular
for the more complex system of neutral Al I. The complete tables of transition
data are available
The effect of relationship status on communicating emotions through touch
Research into emotional communication to date has largely focused on facial and vocal expressions. In contrast, recent studies by Hertenstein, Keltner, App, Bulleit, and Jaskolka (2006) and Hertenstein, Holmes, McCullough, and Keltner (2009) exploring nonverbal communication of emotion discovered that people could identify anger, disgust, fear, gratitude, happiness, love, sadness and sympathy from the experience of being touched on either the arm or body by a stranger, without seeing the touch. The study showed that strangers were unable to communicate the self-focused emotions embarrassment, envy and pride, or the universal emotion surprise. Literature relating to touch indicates that the interpretation of a tactile experience is significantly influenced by the relationship between the touchers (Coan, Schaefer, & Davidson, 2006). The present study compared the ability of romantic couples and strangers to communicate emotions solely via touch. Results showed that both strangers and romantic couples were able to communicate universal and prosocial emotions, whereas only romantic couples were able to communicate the self-focused emotions envy and pride
Deception and self-awareness
This paper presents a study conducted for the Shades of Grey EPSRC research project (EP/H02302X/1), which aims to develop a suite of interventions for identifying terrorist activities. The study investigated the body movements demonstrated by participants while waiting to be interviewed, in one of two conditions: preparing to lie or preparing to tell the truth. The effect of self-awareness was also investigated, with half of the participants sitting in front of a full length mirror during the waiting period. The other half faced a blank wall. A significant interaction was found for the duration of hand/arm movements between the deception and self-awareness conditions (F=4.335, df=1;76, p<0.05). Without a mirror, participants expecting to lie spent less time moving their hands than those expecting to tell the truth; the opposite was seen in the presence of a mirror. This finding indicates a new research area worth further investigation
Spatio-Temporal Sentiment Hotspot Detection Using Geotagged Photos
We perform spatio-temporal analysis of public sentiment using geotagged photo
collections. We develop a deep learning-based classifier that predicts the
emotion conveyed by an image. This allows us to associate sentiment with place.
We perform spatial hotspot detection and show that different emotions have
distinct spatial distributions that match expectations. We also perform
temporal analysis using the capture time of the photos. Our spatio-temporal
hotspot detection correctly identifies emerging concentrations of specific
emotions and year-by-year analyses of select locations show there are strong
temporal correlations between the predicted emotions and known events.Comment: To appear in ACM SIGSPATIAL 201
The effects of self-awareness on body movement indicators of the intention to deceive
A study was conducted to investigate the body movements of participants waiting to be interviewed in one of two conditions: preparing to answer questions truthfully or preparing to lie. The effects of increased self-awareness were also investigated, with half of the participants facing a mirror; the other half facing a blank wall. Analysis of covertly obtained video footage showed a significant interaction for the duration of hand/arm movements between deception level and self-awareness. Without a mirror, participants expecting to lie spent less time moving their hands than those expecting to tell the truth; the opposite was seen in the presence of a mirror. Participants expecting to lie also had higher levels of anxiety and thought that they were left waiting for less time than those expecting to tell the truth. These findings led to the identification of further research areas with the potential to support deception detection in security applications
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Emotion processing in infancy: specificity in risk for social anxiety and associations with two year outcomes
The current study examined the specificity of patterns of responding to high and low intensity negative emotional expressions of infants of mothers with social phobia, and their association with child outcomes at two years of age. Infants of mothers with social phobia, generalised anxiety disorder (GAD) or no history of anxiety were shown pairs of angry and fearful emotional expressions at 10 weeks of age. Symptoms of social withdrawal, anxiety and sleep problems were assessed at two years of age. Only infants of mothers with social phobia showed a tendency to look away from high intensity fear faces; however infants of mothers with both social phobia and GAD showed a bias towards high intensity angry faces. Among the offspring of mothers with social phobia, anxiety symptoms at two years of age were associated with a preference for high intensity fear faces in infancy. The reverse pattern was found amongst the offspring of non-anxious mothers. These findings suggest a possible specific response to emotional expressions among the children of mothers with social phobia
Expressão facial: o reconhecimento das emoções básicas em dependentes de heroína - estudo empírico com portugueses
Este artigo dá conta de uma investigação sobre o efeito da heroína na identificação e reconhecimento das emoções
básicas (alegria, tristeza, cólera, surpresa, aversão, medo e desprezo). A amostra envolveu 60 participantes portugueses
(25 mulheres, M= 29,5, DP= 4.4; 35 homens, M= 26.5, DP= 3.6) diagnosticados com Perturbações Induzidas
por Opiáceos (American Psychiatric Association, 2000). Confirmou-se que os dependentes de heroína apresentam
dificuldades na identificação e caracterização das emoções básicas universais com excepção da tristeza e da cólera,
com valorada incidência até às 72 horas, a qual foi decrescendo com o decorrer do tempo da abstinência. Os resultados
confirmam, ainda, que as mulheres são mais espontâneas na identificação e caracterização das emoções básicas
do que os homens. Os homens não são tão espontâneos e consistentes naquela identificação, manifestando erros
recidivos de percepção emocional. São também mais espontaneamente identificadas pelas mulheres as emoções
básicas exibidas.
This paper presents a research on the effect of the cocaine in the identification and recognition of the basic emotions
(joy, sadness, anger, surprise, disgust, fear and contempt).The sample involved 60 Portuguese participants (25
women, M = 36,5, SD = 4,4; 35 men, M = 30,5, SD = 3.6) diagnoses with Induced Disturbances by Opiates (American
Psychiatric Association, 2000). The results confirm that the heroin dependents present difficulties in the identification
and characterization of the universal basic emotions with exception of the sadness and anger. The results confirm,
still, that the women are more spontaneous in the identification and characterization of the basic emotions of that
the men. The men are not so spontaneous and consistent in that identification, revealing frequents errors of emotional
perception
Inversion improves the recognition of facial expression in thatcherized images
The Thatcher illusion provides a compelling example of the face inversion effect. However, the marked effect of inversion in the Thatcher illusion contrasts to other studies that report only a small effect of inversion on the recognition of facial expressions. To address this discrepancy, we compared the effects of inversion and thatcherization on the recognition of facial expressions. We found that inversion of normal faces caused only a small reduction in the recognition of facial expressions. In contrast, local inversion of facial features in upright thatcherized faces resulted in a much larger reduction in the recognition of facial expressions. Paradoxically, inversion of thatcherized faces caused a relative increase in the recognition of facial expressions. Together, these results suggest that different processes explain the effects of inversion on the recognition of facial expressions and on the perception of the Thatcher illusion. The grotesque perception of thatcherized images is based on a more orientation-sensitive representation of the face. In contrast, the recognition of facial expression is dependent on a more orientation-insensitive representation. A similar pattern of results was evident when only the mouth or eye region was visible. These findings demonstrate that a key component of the Thatcher illusion is to be found in orientation-specific encoding of the features of the face
STEPS - an approach for human mobility modeling
In this paper we introduce Spatio-TEmporal Parametric Stepping (STEPS) - a simple parametric mobility model which can cover a large spectrum of human mobility patterns. STEPS makes abstraction of spatio-temporal preferences in human mobility by using a power law to rule the nodes movement. Nodes in STEPS have preferential attachment to favorite locations where they spend most of their time. Via simulations, we show that STEPS is able, not only to express the peer to peer properties such as inter-ontact/contact time and to reflect accurately realistic routing performance, but also to express the structural properties of the underlying interaction graph such as small-world phenomenon. Moreover, STEPS is easy to implement, exible to configure and also theoretically tractable
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