62 research outputs found
I Will Like It Later But Not Now: The Roles of Temporal Distance and Guilt in Hedonic Product Evaluation
How and why does temporal distance influence consumers evaluation of future hedonic consumption? Drawing upon the construal level theory, we propose that guilt is a lower-level construal than hedonic pleasure and
becomes salient in the immediate versus distant consumption. As such, we hypothesize that consumers evaluate future hedonic consumption less positively as temporal distance becomes smaller. We find that temporal distance influences product evaluation when the product is framed as a hedonic option, but not when it is framed as a utilitarian one (study 1). The effect of
temporal distance is mediated by anticipated guilt (study 2).This research was financially supported from the Management Research Center, College of Business Administration, Seoul National University
Automatic Three-Dimensional Cephalometric Annotation System Using Three-Dimensional Convolutional Neural Networks
Background: Three-dimensional (3D) cephalometric analysis using computerized
tomography data has been rapidly adopted for dysmorphosis and anthropometry.
Several different approaches to automatic 3D annotation have been proposed to
overcome the limitations of traditional cephalometry. The purpose of this study
was to evaluate the accuracy of our newly-developed system using a deep
learning algorithm for automatic 3D cephalometric annotation. Methods: To
overcome current technical limitations, some measures were developed to
directly annotate 3D human skull data. Our deep learning-based model system
mainly consisted of a 3D convolutional neural network and image data
resampling. Results: The discrepancies between the referenced and predicted
coordinate values in three axes and in 3D distance were calculated to evaluate
system accuracy. Our new model system yielded prediction errors of 3.26, 3.18,
and 4.81 mm (for three axes) and 7.61 mm (for 3D). Moreover, there was no
difference among the landmarks of the three groups, including the midsagittal
plane, horizontal plane, and mandible (p>0.05). Conclusion: A new 3D
convolutional neural network-based automatic annotation system for 3D
cephalometry was developed. The strategies used to implement the system were
detailed and measurement results were evaluated for accuracy. Further
development of this system is planned for full clinical application of
automatic 3D cephalometric annotation
Effect of Plasma Composition on the Interpretation of Faraday Rotation
Faraday rotation (FR) is widely used to infer the orientation and strength of
magnetic fields in astrophysical plasmas. Although the absence of
electron-positron pairs is a plausible assumption in many astrophysical
environments, the magnetospheres of pulsars and black holes and their
associated jets may involve a significant pair plasma fraction. This motivates
being mindful of the effect of positrons on FR. Here we derive and interpret
exact expressions of FR for a neutral plasma of arbitrary composition. We focus
on electron-ion-positron plasmas in which charge neutrality is maintained by an
arbitrary combination of ions and positrons. Because a pure electron-positron
plasma has zero FR, the greater the fraction of positrons the higher the field
strength required to account for the same FR. We first obtain general formulae
and then specifically consider parameters relevant to active galctic nuclei
(AGN) jets to illustrate the significant differences in field strengths that FR
measurements from radio frequency measurements. Complementarily, using galaxy
cluster core plasmas as examples, we discuss how plasma composition can be
constrained if independent measurements of the field strength and number
density are available and combined with FR.Comment: Submitted to MNRA
Fingerprints for anisotropic Kondo lattice behavior in the quasiparticle dynamics of the kagome metal NiIn
We present a temperature- and polarization-resolved phononic and electronic
Raman scattering study in combination with the first-principles calculations on
the kagome metal NiIn with anisotropic transport properties and non-Fermi
liquid behavior. At temperatures below 50 K and down to 2 K, several Raman
phonon modes, including particularly an interlayer shear mode, exhibit
appreciable frequency and linewidth renormalization, reminiscent of the onset
of the Kondo screening without an accompanying structural or magnetic phase
transition. In addition, a low-energy electronic continuum observed in
polarization perpendicular to the kagome planes reveals strong temperature
dependence below 50 K, implying thermal depletion of incoherent quasiparticles,
while the in-plane continuum remains invariant. These concomitant electronic
and phononic Raman signatures suggest that NiIn undergoes an anisotropic
electronic crossover from an incoherent to a coherent Kondo lattice regime
below 50 K. We discuss the origin of the anisotropic incoherent-coherent
crossover in association with the possible anisotropic Kondo hybridization
involving localized Ni- flat-band electrons.Comment: 18 pages, 6 figures; published in Phys. Rev.
One-ninth magnetization plateau stabilized by spin entanglement in a kagome antiferromagnet
The spin-1/2 antiferromagnetic Heisenberg model on a Kagome lattice is
geometrically frustrated, which is expected to promote the formation of
many-body quantum entangled states. The most sought-after among these is the
quantum spin liquid phase, but magnetic analogs of liquid, solid, and
supersolid phases may also occur, producing fractional plateaus in the
magnetization. Here, we investigate the experimental realization of these
predicted phases in the Kagome material YCu3(OD)6+xBr3-x (x=0.5). By combining
thermodynamic and Raman spectroscopic techniques, we provide evidence for
fractionalized spinon excitations and observe the emergence of a 1/9
magnetization plateau. These observations establish YCu3(OD)6+xBr3-x as a model
material for exploring the 1/9 plateau phase.Comment: to appear in Nature Physics, 33 pagses, 15 figure
Integrin recycling and the mechanism of inside-out activation
EThOS - Electronic Theses Online ServiceGBUnited Kingdo
Transcription Factors Oct-1 and GATA-3 Cooperatively Regulate Th2 Cytokine Gene Expression via the RHS5 within the Th2 Locus Control Region.
The T helper type 2 (Th2) locus control region (LCR) regulates Th2 cell differentiation. Several transcription factors bind to the LCR to modulate the expression of Th2 cytokine genes, but the molecular mechanisms behind Th2 cytokine gene regulation are incompletely understood. Here, we used database analysis and an oligonucleotide competition/electrophoretic mobility shift assays to search for transcription factors binding to RHS5, a DNase I hypersensitive site (DHS) within the Th2 LCR. Consequently, we demonstrated that GATA-binding protein-3 (GATA-3), E26 transformation-specific protein 1 (Ets-1), octamer transcription factor-1 (Oct-1), and Oct-2 selectively associate with RHS5. Furthermore, chromatin immunoprecipitation and luciferase reporter assays showed that Oct-1 and Oct-2 bound within the Il4 promoter region and the Th2 LCR, and that Oct-1 and GATA-3 or Oct-2 synergistically triggered the transactivational activity of the Il4 promoter through RHS5. These results suggest that Oct-1 and GATA-3/Oct-2 direct Th2 cytokine gene expression in a cooperative manner
Cause-related marketing of luxury brands: Nudging materialists to act prosocially
© 2022 Wiley Periodicals LLCAcross four experiments, we show that materialists' willingness to engage in cause-related marketing (CRM) depends on the type of campaign: product-linked (brand linked to a cause through limited-edition products) or donation-linked (direct donations to a charitable cause). Materialists are more willing to engage in product-linked than donation-linked campaigns, whereas nonmaterialists show the opposite pattern. The effect for materialists is driven by the status-signaling qualities that luxury products convey and is eliminated for value brands and when materialists' need for status is momentarily satiated. This study shows that materialists can be nudged to behave prosocially by leveraging their status-seeking motivations in the context of luxury consumption, and luxury brands will maximize participation by utilizing product-linked CRM campaigns.N
Cornering Algorithm for a Crawler In-Pipe Inspection Robot
Based on the large-scale wall-pressing three-legged crawler pipeline inspection robot, our team proposed a cornering algorithm based on space constraints, that aims to better control the smooth operation of the pipeline robot in the pipeline. This algorithm is aimed at large robots that use an electric telescopic rod structure to replace the elastic structure on traditional small robots. The electric telescopic rod structure meets the large-scale weight change of the robot and provides sufficient supporting force. However, this structure also makes it difficult for the robot to automatically adapt to the change of pipe diameter and increases the difficulty of the robot’s control. In order to solve this problem and more accurately control the operation of the robot during cornering, this paper analyzes the space constraints of the robot when turning, the optimization analysis of the telescopic rod expansion and the ratio of the speed of each crawler, obtaining a stable turning algorithm for pipeline robots. The algorithm guarantees that the robot can provide sufficient support in the bend pipeline, and that it has good stability and mobility
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