4,855 research outputs found
The Business and Culture of Social Media: In Search of the People Formerly Known As the Audience
This presentation addresses three transformations: the transformation of the audience; of advertising models; and of media businesses. The talk describes how they were transformed first by digital technology, and how they are now being transformed by social media. It goes on to describe what we call the "three economies" which govern the era of social media and proposes some research needed in order to understand and to monetize the audiences of this era
The cell fusion-free vegetable list helps organic farmers to find suitable cultivars (Liveseed Practice Abstract)
You can download the list for free in German and French: https://www.fibl.org/en/shop-en/1671-zf-freie-sorten.html
Further Information:
FiBL breeding manual https://www.fibl.org/en/shop-en/1202-plant-breeding.html
- IFOAM-strategy on artificial CMS https://www.ifoam.bio/sites/default/files/cell_fusion_replacement_strategy_2017_for_website_upload.pdf
- IFOAM position paper: Compatibility of Breeding Techniques in Organic S
Satisfiability of cross product terms is complete for real nondeterministic polytime Blum-Shub-Smale machines
Nondeterministic polynomial-time Blum-Shub-Smale Machines over the reals give
rise to a discrete complexity class between NP and PSPACE. Several problems,
mostly from real algebraic geometry / polynomial systems, have been shown
complete (under many-one reduction by polynomial-time Turing machines) for this
class. We exhibit a new one based on questions about expressions built from
cross products only.Comment: In Proceedings MCU 2013, arXiv:1309.104
Fermionic Operator Mixing in Holographic p-wave Superfluids
We use gauge-gravity duality to compute spectral functions of fermionic
operators in a strongly-coupled defect field theory in p-wave superfluid
states. The field theory is (3+1)-dimensional N=4 supersymmetric SU(Nc)
Yang-Mills theory, in the 't Hooft limit and with large coupling, coupled to
two massless flavors of (2+1)-dimensional N=4 supersymmetric matter. We show
that a sufficiently large chemical potential for a U(1) subgroup of the global
SU(2) isospin symmetry triggers a phase transition to a p-wave superfluid
state, and in that state we compute spectral functions for the fermionic
superpartners of mesons valued in the adjoint of SU(2) isospin. In the spectral
functions we see the breaking of rotational symmetry and the emergence of a
Fermi surface comprised of isolated points as we cool the system through the
superfluid phase transition. The dual gravitational description is two
coincident probe D5-branes in AdS5 x S5 with non-trivial worldvolume SU(2)
gauge fields. We extract spectral functions from solutions of the linearized
equations of motion for the D5-branes' worldvolume fermions, which couple to
one another through the worldvolume gauge field. We develop an efficient method
to compute retarded Green's functions from a system of coupled bulk fermions.
We also perform the holographic renormalization of free bulk fermions in any
asymptotically Euclidean AdS space.Comment: 68 pages, 25 eps files in 9 figures; v2 minor corrections, added two
references, version published in JHE
A modified lookdown construction for the Xi-Fleming-Viot process with mutation and populations with recurrent bottlenecks
Let be a finite measure on the unit interval. A
-Fleming-Viot process is a probability measure valued Markov process
which is dual to a coalescent with multiple collisions (-coalescent)
in analogy to the duality known for the classical Fleming Viot process and
Kingman's coalescent, where is the Dirac measure in 0.
We explicitly construct a dual process of the coalescent with simultaneous
multiple collisions (-coalescent) with mutation, the -Fleming-Viot
process with mutation, and provide a representation based on the empirical
measure of an exchangeable particle system along the lines of Donnelly and
Kurtz (1999). We establish pathwise convergence of the approximating systems to
the limiting -Fleming-Viot process with mutation. An alternative
construction of the semigroup based on the Hille-Yosida theorem is provided and
various types of duality of the processes are discussed.
In the last part of the paper a population is considered which undergoes
recurrent bottlenecks. In this scenario, non-trivial -Fleming-Viot
processes naturally arise as limiting models.Comment: 35 pages, 2 figure
Fayet-Iliopoulos Terms in AdS/CFT with Flavour
We construct the gravity dual of a field theory with flavour in which there
are Fayet-Iliopoulos (FI) terms present. For this purpose we turn on a constant
Kalb-Ramond B field in four internal space directions of AdS_5 x S^5 together
with a D7 brane probe wrapping AdS_5 x S^3. The B field induces
noncommutativity on the four internal directions of the D7 brane probe
perpendicular to the AdS boundary. We argue on general grounds that the moduli
space of the Higgs part of mixed Coulomb-Higgs states in the dual field theory
at the boundary is described by the ADHM equations for noncommutative
instantons on the four internal directions of the D7 brane probe. In
particular, the global symmetries match. The FI term arises as the holographic
dual of an anti-selfdual B field. We discuss possible applications for this
construction.Comment: 31 pages, 2 figures, JHEP 3 style, v2: References added, final
published versio
Women and Spirituality: An Experiential Group for Female Graduate Students
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/89506/1/j.2161-1882.2007.tb00009.x.pd
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