2,122 research outputs found
Don’t Objectify Me!: Sexual Self-Monitoring, Coping, and Psychological Maladjustment
Undergraduate college students (283 females, 127 males) completed surveys aimed at measuring positive sexual awareness vs. sexual self-monitoring, coping styles, and psychopathological symptoms. Positive sexual awareness significantly positively correlated with adaptive coping styles but did not otherwise correlate with psychopathological symptoms. Sexual self-monitoring was significantly positively correlated with somatization, depression-anxiety, and avoidant coping in women but not men. Bootstrapped mediation analyses indicated that the relationships between sexual self-monitoring and somatization, depression-anxiety, and eating disorder symptoms were significantly mediated by avoidant coping in women but not in men. These results were explained in terms of Objectification Theory, suggesting that women who experience sexual objectification are more likely to engage in avoidant coping, thus increasing their risk of developing psychopathology. Findings are discussed in terms of broader issues of the disempowering effects of objectification
Socialeyes: developing a useful interface for the visually disabled
2011 Summer.Includes bibliographical references.While many tools exist to help the visually disabled navigate, there are very few designed for social situations. Recent advancements in the field of facial recognition offer the opportunity to change that. This thesis begins a study of the human computer interaction challenges of developing usable interfaces for visual social aides
Planetary auroral imaging
The interaction of the solar wind and the Earth magnetosphere cause auroras. The energetic electrically charged particles, mostly electrons, accelerate along the Earth magnetic field lines into the upper atmosphere, where they collide with gas atoms, causing them to emit light. Some planets also have auroral emission in their characteristic environment. The Jovian magnetosphere is the largest magnetosphere of the solar system and its system is different from the Earth.
The auroras on Jupiter can be studied with high sensitivity and resolution by the Hubble Space Telescope (HST) Ultraviolet (UV) and far-ultraviolet Space Telescope Imaging Spectrograph (STIS) and Advanced Camera for Surveys (ACS) instruments. I present the planetary auroral imaging techniques, geometrical transformation and subtraction the airglow model, which can be used as a pre-processing to the image before further process by the VOronoi Image SEgmentation (VOISE) algorithm. VOISE is a dynamic and self-organising algorithm which creates a partition of an image pixel into Voronoi diagram (VD) regions according to prescribed homogeneity criteria. The Jovian auroral image was selected from the APIS database. Using a planetary model, the geometric transformation was performed to get the polar projection, build the airglow model and subtract it from the original to make a clear auroral representation in the two dimensional image
光度変化から探る、クエーサー構造と活動史に関する研究
京都大学新制・課程博士博士(理学)甲第24418号理博第4917号新制||理||1702(附属図書館)京都大学大学院理学研究科物理学・宇宙物理学専攻(主査)准教授 岩室 史英, 教授 嶺重 慎, 教授 太田 耕司学位規則第4条第1項該当Doctor of ScienceKyoto UniversityDFA
The relation between quasars' optical spectra and variability
This work aimed to find the relationship between quasars' optical variability
and spectral features to reveal the regularity behind the random variation. It
is known that quasar's FeII/Hbeta flux ratio and equivalent width of [OIII]5007
are negatively correlated, called Eigenvector 1. In this work, we visualized
the relationship between the position on this Eigenvector 1 (EV1) plane and how
they had changed their brightness after ~10 years. We conducted three analyses
using different quasar samples each. The first analysis showed the relation
between their distributions on the EV1 plane and how much they had changed
brightness, using 13,438 Sloan Digital Sky Survey quasars. This result shows
how brightness changes later are clearly related to the position on the EV1
plane. In the second analysis, we plotted the sources reported as
Changing-Look(State) Quasars on the EV1 plane. This result shows that the
position on the EV1 plane corresponds activity level of each source, the bright
or dim state of them are distributed on the opposite sides divided by the
typical quasar distribution. In the third analysis, we examined the transition
vectors on the EV1 plane using sources with multiple-epoch spectra. This result
shows that the brightening and dimming sources move on the similar path and
they turn into the position corresponding to the opposite activity level. We
also found this trend is opposite to the empirical rule that RFeII positively
correlated with the Eddington ratio, which has been proposed based on the
trends of a large number of quasars. From all these analyses, it is indicated
that quasars tend to oscillate between both sides of the distribution ridge on
the EV1 plane; each of them corresponds to a dim state and a bright state. This
trend in optical variation suggests that significant brightness changes, such
as Changing-Look quasars, are expected to repeat.Comment: 12 pages, 4 figures, 1 table. Accepted for publication in PAS
Dynamical Generation of CKM Mixings by Broken Horizontal Gauge Interactions
The fermion mass matrices are calculated in the framework of the dynamical
mass generation by the broken horizontal gauge interactions. The
non-proportional mass spectra between up- and down-sectors and CKM mixings are
obtained solely by radiative corrections due to the ordinary gauge
interactions.Comment: 20 pages + 1 uuencoded eps figure, PHYZZ
Collective synchronization in populations of globally coupled phase oscillators with drifting frequencies
We generalize the Kuramoto model for coupled phase oscillators by allowing
the frequencies to drift in time according to Ornstein-Uhlenbeck dynamics. Such
drifting frequencies were recently measured in cellular populations of
circadian oscillator and inspired our work. Linear stability analysis of the
Fokker-Planck equation for an infinite population is amenable to exact solution
and we show that the incoherent state is unstable passed a critical coupling
strength K_c(\ga, \sigf), where \ga is the inverse characteristic drifting
time and \sigf the asymptotic frequency dispersion. Expectedly agrees
with the noisy Kuramoto model in the large \ga (Schmolukowski) limit but
increases slower as \ga decreases. Asymptotic expansion of the solution for
\ga\to 0 shows that the noiseless Kuramoto model with Gaussian frequency
distribution is recovered in that limit. Thus varying a single parameter allows
to interpolate smoothly between two regimes: one dominated by the frequency
dispersion and the other by phase diffusion.Comment: 5 pages, 5 figures, accepted in Phys. Rev.
Evaluation Methods of Mechanical Properties of Micro-Sized Specimens
Micro-sized components have been widely used to microelectromechanical systems (MEMSs) and medical apparatus in recent years. Measurement methodologies of the mechanical property of small materials need to be improved for structural designing of these devices because of their component size reduced to micro- or nano-regime where sample size effects emerge. Mechanical properties and deformation behavior could be very different with their dimensions and geometries especially for small materials. Our experiments on the micro-specimen tested in different dimensions and loading directions are suitable for the evaluations of materials for MEMS components. In this chapter, recent studies on micro-testing of bending, compression, and tension with micro-sized samples will be presented including fabrication methods of non-tapered micro-sized specimens
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