2,298 research outputs found
A method to determine formation position of comb teeth of Kerr micro-comb under the influence of and nonlinearity
The Kerr microcomb has a huge potential advantage as a quantum computing
platform because of its large-scale and globally coherent optical modes. The
micro-comb has always faced a primary problem is how to increase the
controllability of frequency domain modes. In this work, based on the pump
thresholds of different side modes, we establish a set of method for
determining the formation position of side mode comb teeth in a micro-ring
cavity with second-order ( ) and third-order ( ) nonlinearity. Based on the
second-order autocorrelation function spectrum simulation, our quantum
dynamical explanation has a good agreement with the experimental results.Comment: 5figures. arXiv admin note: text overlap with arXiv:2001.02356 by
other author
Injective symmetric quantaloid-enriched categories
We characterize injective objects, injective hulls and essential embeddings
in the category of symmetric categories enriched in a small, integral and
involutive quantaloid. In particular, injective partial metric spaces are
precisely formulated.Comment: 27 pages, final versio
Are Advice Takers Bayesian? Preference Similarity Effects on Advice Seeking and Taking
Consumers increasingly depend on online reviews to inform purchase decisions. We show that they make two systematic errors that are in offsetting directions in utilizing advice to make a "probabilistic affective forecasting". People underestimate the degree of "preference matching" with reviewers, whereas overweigh their advice compared to a Bayesian criterion
Recent Advances in Imaging of Dopaminergic Neurons for Evaluation of Neuropsychiatric Disorders
Dopamine is the most intensely studied monoaminergic neurotransmitter. Dopaminergic neurotransmission plays an important role in regulating several aspects of basic brain function, including motor, behavior, motivation, and working memory. To date, there are numerous positron emission tomography (PET) and single photon emission computed tomography (SPECT) radiotracers available for targeting different steps in the process of dopaminergic neurotransmission, which permits us to quantify dopaminergic activity in the living human brain. Degeneration of the nigrostriatal dopamine system causes Parkinson's disease (PD) and related Parkinsonism. Dopamine is the neurotransmitter that has been classically associated with the reinforcing effects of drug abuse. Abnormalities within the dopamine system in the brain are involved in the pathophysiology of attention deficit hyperactivity disorder (ADHD). Dopamine receptors play an important role in schizophrenia and the effect of neuroleptics is through blockage of dopamine D2 receptors. This review will concentrate on the radiotracers that have been developed for imaging dopaminergic neurons, describe the clinical aspects in the assessment of neuropsychiatric disorders, and suggest future directions in the diagnosis and management of such disorders
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