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Implicit Emotional Priming of Traumatic Events: The Effects of Semantic Leveland Emotional Activation
Vivid representations are often made by traumatic events with intense emotions. The emotions may be activatedautomatically from memory on the mere exposure of an affect-loaded stimulus. The aims of this study were to investigate theimplicit emotional processing of traumatic events and the moderation of priming by semantic level of the events, using primednaming task at short stimulus onset asynchrony (150ms). A 3 semantic level of traumatic primed events (general, domestic,or foreign words) by 3 target emotions (high-arousal negative, moderate positive, low-arousal negative words) repeated designwas used. When the primed words were general (e.g. terror) or domestic (e.g. Sewol ferry disaster) events, response time ofhigh-arousal negative words (e.g. fear or angry) were significantly longer than other emotion words (e.g. happy or sadness).Our findings suggest contrast effects of affective priming as a result of automatic implicit regulation
A 3.1-4.8GHz IR-UWB All-Digital Pulse Generator in 0.13-um CMOS Technology for WBAN Systems
Analog, Digital & RF Circuit DesignImpulse Radio Ultra-WideBand (IR-UWB) systems have drawn growing attention for wireless sensor networks such as Wireless Personal Area Network (WPAN) and Wireless Body Area Network (WBAN) systems ever since the Federal Communications Commission (FCC) released the spectrum between 3.1 and 10.6GHz for unlicensed use in 2002. The restriction on transmitted power spectral density in this band is equal to the noise emission limit of household digital electronics. This band is also shared with several existing service, therefore in-band interference is expected and presents a challenge to UWB system design.
UWB devices as secondary spectrum users must also detect and avoid (DAA) other licensed users from the cognitive radio???s point of view. For the DAA requirement, it is more effective to deploy signal with variable center frequency and a minimum 10dB bandwidth of 500MHz than a signal covering the entire UWB spectrum range with fixed center frequency.
A key requirement of the applications using IR-UWB signal is ultra-low power consumption for longer battery life. Also, cost reduction is highly desirable. Recently, digital IR-UWB pulse generation is studied more than analog approach due to its lower power consumption.
An all-digital pulse generator in a standard 0.13-um CMOS technology for communication systems using Impulse Radio Ultra-WideBand (IR-UWB) signal is presented. A delay line-based architecture utilizing only static logic gates and leading lower power consumption for pulse generation is proposed in this thesis. By using of all-digital architecture, energy is consumed by CV2 switching losses and sub-threshold leakage currents, without RF oscillator or analog bias currents. The center frequency and the fixed bandwidth of 500MHz of the output signal can be digitally controlled to cover three channels in low band of UWB spectrum. Delay based Binary Shift Keying (DB-BPSK) and Pulse Position Modulation (PPM) schemes are exploited at the same time to modulate the transmitted signals with further improvement in spectrum characteristics. The total energy consumption is 48pJ/pulse at 1.2V supply voltage, which is well suitable for WBAN systems.ope
The Connection between Star-Forming Galaxies, AGN Host Galaxies and Early-Type Galaxies in the SDSS
We present a study of the connection between star-forming galaxies, AGN host
galaxies, and normal early-type galaxies in the Sloan Digital Sky Survey
(SDSS). Using the SDSS DR5 and DR4plus data, we select our early-type galaxy
sample in the color versus color-gradient space, and we classify the spectral
types of the selected early-type galaxies into normal, star-forming, Seyfert,
and LINER classes, using several spectral line flux ratios. We investigate the
slope in the fundamental space for each class of early-type galaxies and find
that there are obvious differences in the slopes of the fundamental planes
(FPs) among the different classes of early-type galaxies, in the sense that the
slopes for Seyferts and star-forming galaxies are flatter than those for normal
galaxies and LINERs. This may be the first identification of the systematic
variation of the FP slope among the subclasses of early-type galaxies. The
difference in the FP slope might be caused by the difference in the degree of
nonhomology among different classes or by the difference of gas contents in
their merging progenitors. One possible scenario is that the AGN host galaxies
and star-forming galaxies are formed by gas-rich merging and that they may
evolve into normal early-type galaxies after finishing their star formation or
AGN activities.Comment: 5 pages with emulateapj, 2 figures, accepted for publication in the
Astrophysical Journal Letter
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