5,602 research outputs found
TED Talk Recommender Using Speech Transcripts
Nowadays, online video platforms mostly recommend related videos by analyzing
user-driven data such as viewing patterns, rather than the content of the
videos. However, content is more important than any other element when videos
aim to deliver knowledge. Therefore, we have developed a web application which
recommends related TED lecture videos to the users, considering the content of
the videos from the transcripts. TED Talk Recommender constructs a network for
recommending videos that are similar content-wise and providing a user
interface.Comment: 3 page
Affinization of -oscillator representations of
We introduce a category of -oscillator
representations of the quantum affine algebra .
We show that has a family of irreducible
representations, which naturally corresponds to finite-dimensional irreducible
representations of quantum affine algebra of untwisted affine type . It is
done by constructing a category of -oscillator representations of the
quantum affine superalgebra of type , which interpolates these two family of
irreducible representations. The category can
be viewed as a quantum affine analogue of the semisimple tensor category
generated by unitarizable highest weight representations of
() appearing in the
-duality on a bosonic Fock space.Comment: 41 pages, Abstract and Introduction revised, together with minor
correction
Empathy as the Moral Sense?
In his recent work, Michael Slote argues that empathy is what Hutcheson called 'the moral sense'. The most innovative argument he offers for this claim is that our empathic reactions play a crucial role in fixing the reference of moral terms. I argue that Slote's bold proposal faces all the main problems of analytical naturalism, as well as some of its own. I suggest that empathy may nevertheless play a more modest and indirect role in acquiring moral knowledge
Stochastic Processes and the Dirac Equation with External Fields
The equation describing the stochastic motion of a classical particle in
1+1-dimensional space-time is connected to the Dirac equation with external
gauge fields. The effects of assigning different turning probabilities to the
forward and the backward moving particles in time are discussed.Comment: 9 pages, 1 figure, scalar parts eliminate
Disposable Integrated Microfluidic Biochip for Blood Typing by Plastic Microinjection Moulding
Blood typing is the most important test for both transfusion recipients and blood donors. In this paper, a low cost disposable blood typing integrated microfluidic biochip has been designed, fabricated and characterized. In the biochip, flow splitting microchannels, chaotic micromixers, reaction microchambers and detection microfilters are fully integrated. The loaded sample blood can be divided by 2 or 4 equal volumes through the flow splitting microchannel so that one can perform 2 or 4 blood agglutination tests in parallel. For the purpose of obtaining efficient reaction of agglutinogens on red blood cells (RBCs) and agglutinins in serum, we incorporated a serpentine laminating micromixer into the biochip, which combines two chaotic mixing mechanisms of splitting/recombination and chaotic advection. Relatively large area reaction microchambers were also introduced for the sake of keeping the mixture of the sample blood and serum during the reaction time before filtering. The gradually decreasing multi-step detection microfilters were designed in order to effectively filter the reacted agglutinated RBCs, which show the corresponding blood group. To achieve the cost-effectiveness of the microfluidic biochip for disposability, the biochip was realized by the microinjection moulding of COC (cyclic olefin copolymer) and thermal bonding of two injection moulded COC substrates in mass production with a total fabrication time of less than 20 min. Mould inserts of the biochip for the microinjection moulding were fabricated by SU-8 photolithography and the subsequent nickel electroplating process. Human blood groups of A, B and AB have been successfully determined with the naked eye, with 3 mu l of the whole sample bloods, by means of the fabricated biochip within 3 min.X11100104sciescopu
Oscillator representations of quantum affine orthosymplectic superalgebras
We introduce a category of -oscillator representations over the quantum
affine superalgebras of type and construct a new family of its irreducible
representations. Motivated by the theory of super duality, we show that these
irreducible representations naturally interpolate the irreducible
-oscillator representations of type and the finite-dimensional
irreducible representations of type for under
exact monoidal functors. This can be viewed as a quantum (untwisted) affine
analogue of the correspondence between irreducible oscillator and irreducible
finite-dimensional representations of classical Lie algebras arising from the
Howe's reductive dual pairs , where
and .Comment: 50 page
Competing states for the fractional quantum Hall effect in the 1/3-filled second Landau level
In this work, we investigate the nature of the fractional quantum Hall state
in the 1/3-filled second Landau level (SLL) at filling factor (and
8/3 in the presence of the particle-hole symmetry) via exact diagonalization in
both torus and spherical geometries. Specifically, we compute the overlap
between the exact 7/3 ground state and various competing states including (i)
the Laughlin state, (ii) the fermionic Haffnian state, (iii) the
antisymmetrized product state of two composite fermion seas at 1/6 filling, and
(iv) the particle-hole (PH) conjugate of the parafermion state. All these
trial states are constructed according to a guiding principle called the
bilayer mapping approach, where a trial state is obtained as the
antisymmetrized projection of a bilayer quantum Hall state with interlayer
distance as a variational parameter. Under the proper understanding of the
ground-state degeneracy in the torus geometry, the parafermion state can
be obtained as the antisymmetrized projection of the Halperin (330) state.
Similarly, it is proved in this work that the fermionic Haffnian state can be
obtained as the antisymmetrized projection of the Halperin (551) state. It is
shown that, while extremely accurate at sufficiently large positive Haldane
pseudopotential variation , the Laughlin state loses its
overlap with the exact 7/3 ground state significantly at . At slightly negative , it is shown that the
PH-conjugated parafermion state has a substantial overlap with the exact
7/3 ground state, which is the highest among the above four trial states.Comment: 22 pages, 5 figure
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