2,454 research outputs found
Policy-Based Reinforcement Learning for Assortative Matching in Human Behavior Modeling
Human behavior is the potential and expressive capacity (mental, physical,
and social) of human individuals or groups to respond to internal and external
stimuli. We explore assortative matching as a typical human behavior in virtual
networked communities. We propose a modeling approach based on MAS(Multi-Agent
System) and policy-based reinforcement learning to simulate human behavior
through various environmental parameter settings and agent action strategies.
In our experiment, reinforcement learning serves specific agents who learn from
the environment status and competitor behaviors, then optimize strategy to
achieve better results. This work simulates both the individual and group
level, showing some possible paths for forming relative competitive advantages.
This modeling approach can help further analyze the evolutionary dynamics of
human behavior, communities, and organizations on various socioeconomic topics.Comment: 2 pages, 800 words, Extended abstract for DHM of HCI International
202
4-[(6-Chloro-2-pyridyl)methoxy]-3-(2,4-dichlorophenyl)-1-oxaspiro[4.5]dec-3-en-2-one
In the title compound, C21H18Cl3NO3, the cyclohexane ring is in a chair conformation. The five-membered ring forms a dihedral angle of 69.89 (2)° with the benzene ring. The dihedral angle between the benzene and pyridine rings is 14.03 (7)°
BCS-BEC crossover in a relativistic boson-fermion model beyond mean field approximation
We investigate the fluctuation effect of the di-fermion field in the
crossover from Bardeen-Cooper-Schrieffer (BCS) pairing to a Bose-Einstein
condensate (BEC) in a relativistic superfluid. We work within the boson-fermion
model obeying a global U(1) symmetry. To go beyond the mean field approximation
we use Cornwall-Jackiw-Tomboulis (CJT) formalism to include higher order
contributions. The quantum fluctuations of the pairing condensate is provided
by bosons in non-zero modes, whose interaction with fermions gives the
two-particle-irreducible (2PI) effective potential. It changes the crossover
property in the BEC regime. With the fluctuations the superfluid phase
transition becomes the first order in grand canonical ensemble. We calculate
the condensate, the critical temperature and particle abundances as
functions of crossover parameter the boson mass.Comment: The model Lagrangian is re-formulated by decomposing the complex
scalar field into its real and imaginary parts. The anomalous propagators of
the complex scalar are then included at tree level. All numerical results are
updated. ReVTex 4, 13 pages, 10 figures, PRD accepted versio
Silencing of two insulin receptor genes disrupts nymph-adult transition of alate brown citrus aphid
Insulin receptors play key roles in growth, development, and polymorphism in insects. Here, we report two insulin receptor genes (AcInR1 and AcInR2) from the brown citrus aphid, Aphis (Toxoptera) citricidus. Transcriptional analyses showed that AcInR1 increased during the nymph-adult transition in alate aphids, while AcInR2 had the highest expression level in second instar nymphs. AcInR1 is important in aphid development from fourth instar nymphs to adults as verified by dsRNA feeding mediated RNAi. The silencing of AcInR1 or/and AcInR2 produced a variety of phenotypes including adults with normal wings, malformed wings, under-developed wings, and aphids failing to develop beyond the nymphal stages. Silencing of AcInR1 or AcInR2 alone, and co-silencing of both genes, resulted in 73% or 60%, and 87% of aphids with problems in the transition from nymph to normal adult. The co-silencing of AcInR1 and AcInR2 resulted in 62% dead nymphs, but no mortality occurred by silencing of AcInR1 or AcInR2 alone. Phenotypes of adults in the dsInR1 and dsInR2 were similar. The results demonstrate that AcInR1 and AcInR2 are essential for successful nymph-adult transition in alate aphids and show that RNAi methods may be useful for the management of this pest
Symmetry breaking patterns and collective modes of spin-one color superconductors
Spin-one color superconductor is a viable candidate phase of dense matter in
the interiors of compact stars. Its low-energy excitations will influence the
transport properties of such matter and thus have impact on late-stage
evolution of neutron stars. It also provides a good example of spontaneous
symmetry breaking with rich breaking patterns. In this contribution, we
reanalyze the phase diagram of a spin-one color superconductor and point out
that a part of it is occupied by noninert states, which have been neglected in
literature so far. We classify the collective Nambu--Goldstone modes, which are
essential to the transport phenomena.Comment: 6 pages, 1 figure, invited talk on the 4th International Symposium on
Symmetries in Subatomic Physics, June 2-5,2009, Taipe
Some recent progress on quark pairings in dense quark and nuclear matter
We give a brief overview on some recent progress in quark pairings in dense
quark/nuclear matter mostly developed in the past five years. We focus on
following aspects in particular: the BCS-BEC crossover in the CSC phase, the
baryon formation and dissociation in dense quark/nuclear matter, the
Ginzburg-Landau theory for three-flavor dense matter with (1) anomaly,
and the collective and Nambu-Goldstone modes for the spin-one CSC.Comment: RevTex 4, 25 pages, 9 figures, presented for the KITPC (Kavli
Institute for Theoretical Physics China) program "AdS/CFT and Novel
Approaches to Hadron and Heavy Ion Physics' in Oct. 11- Dec. 3, 201
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