11,353 research outputs found
Coupling nanomechanical cantilevers to dipolar molecules
We investigate the coupling of a nanomechanical oscillator in the quantum
regime with molecular (electric) dipoles. We find theoretically that the
cantilever can produce single-mode squeezing of the center-of-mass motion of an
isolated trapped molecule and two-mode squeezing of the phonons of an array of
molecules. This work opens up the possibility of manipulating dipolar crystals,
which have been recently proposed as quantum memory, and more generally, is
indicative of the promise of nanoscale cantilevers for the quantum detection
and control of atomic and molecular systems.Comment: 3 figures, 4page
Relationship between earthquake fault triggering and societal behavior using ant colony optimization
In this analysis, we use the ant behaviour in simulating a framework for analysis of complex interplay amongst short time-scale deformation, long time- scale tectonics for positive stress coupling and slip interactions in earthquake genesis modeling. Using the proposed improved ant colony algorithm for global optimization the best solution ants within the search and the circulation of the optimal solution as the initial solution search, to expand its search, to avoid falling into local optimum of trigger zones analysis for earthquake occurrences. In order to validate the avalanche behaviour and corresponding nucleation we  best solution as the initial solution is adopted in order to widen searching scope to avoid getting into local optimum . In this proposed framework, an ant colony model is simulated to identify the physical framework of identifying trigger basins for the precursors to geodynamic model of propagation for precursory stress-strain signals. The disturbances at trigger basins cause the collapse of a subsystem leading to stress evolution and slip nucleation. Trigger basins help identify the zone of earthquake source nucleation as an index of ? and ? for strain analysis. The stress strain network can be interpreted by the increase in steady-state energy transmitted due to redistribution of stress accumulation into the earth tectonic framework. Sand pile behaviour model has been modeled through ant colony optimization for forecasting of likelihood time of triggering influences of lithosphere on the basis of critical zones of lithosphere where dump of elastic pressure is possible. The ant colony adaptive framework consisted of vertices representing the stress-strain component and edges, representing scored transformations for global coupling effects have been constructed for dynamic monitoring of stress and strain behaviour. Triggering basins serve as harbingers of large earthquake where stress-strain interactions have been analyzed by the quasi-static mechanics of seismic precursory stress-strain propagation in the crustal lithosphere. The study shows that dynamic variation of stress drop due to saved up pressure can be modeled by ant colony framework for steady state release due to trigger and global correlation framework. The simulation framework shows that with time, spatial triggering points can be negatively coupled and these interact with lesser impact, while positive coupling occurs only with more distant zones of stress generation for geodynamic frameworks, suggesting that the structural heterogeneities within the causative rocks associated with cracks and pores can dictate the pattern of stress – strain interactions and earthquake generating processes. Keywords: crack–porous, ant colony, geo-dynamical framework, stress-strain transmission, emergenc
Stability of the density-wave state of a dipolar condensate in a pancake trap
We study a dipolar boson-fermion mixture in a pancake geometry at absolute
zero temperature, generalizing our previous work on the stability of polar
condensates and the formation of a density-wave state in cylindrical traps.
After examining the dependence of the polar condensate stability on the
strength of the fermion-induced interaction, we determine the transition point
from a ground-state Gaussian to a hexagonal density-wave state. We use a
variational principle to analyze the stability properties of those density-wave
state
Studies on Inheritance of Geneic Male Sterility (GMS) and Hybrid Seed Production in Okra [Abelmoschus esculentus (L.) Moench.]
Inheritance of geneic male sterility in GMS line MS-1 of okra [Abelmoschus esculentus (L.) Moench.] was studied using F1, F2 and test-cross generations of crosses between GMS line MS-1 and normal fertile genotypes, and the varieties Arka Anamika, Parbhani Kranti, Arka Abhay, IIHR-108-1-31, IIHR-109-20-6, IIHR-116-23-6, IIHR- 180-6-3, IIHR-161-10-1 and IIHR-130-2-10. All the F1 were found fertile. Segregation of pollen fertility in F2 and test - cross generations involving ms1 was segregated in the ratio 1 fertile: 1 sterile, respectively. This indicated that GMS trait in the line is controlled by a single recessive gene (ms1ms1). Large-scale F1 hybrid seed production in okra becomes rather slow due to the tedious hand-emasculation, followed by hand-pollination, incurring additional labour and cost of F1 seed production. In comparison to fertile lines, this saves approximately 70% time and manual labour. Use of Geneic Male Sterile (GMS) line MS-1 can make F1 hybrid seed production in okra easy and more economical compared to hand-emasculation
Table Detection in Invoice Documents by Graph Neural Networks
This is the author accepted manuscript. The final version is available from IEEE via the DOI in this record.Tabular structures in documents offer a complementary dimension to the raw textual data, representing logical
or quantitative relationships among pieces of information.
In digital mail room applications, where a large amount of
administrative documents must be processed with reasonable
accuracy, the detection and interpretation of tables is crucial.
Table recognition has gained interest in document image
analysis, in particular in unconstrained formats (absence of
rule lines, unknown information of rows and columns). In
this work, we propose a graph-based approach for detecting
tables in document images. Instead of using the raw content
(recognized text), we make use of the location, context and
content type, thus it is purely a structure perception approach,
not dependent on the language and the quality of the text
reading. Our framework makes use of Graph Neural Networks
(GNNs) in order to describe the local repetitive structural information of tables in invoice documents. Our proposed model
has been experimentally validated in two invoice datasets and
achieved encouraging results. Additionally, due to the scarcity
of benchmark datasets for this task, we have contributed to
the community a novel dataset derived from the RVL-CDIP
invoice data. It will be publicly released to facilitate future
research.European Unio
The anisotropic Heisenberg chain in coexisting transverse and longitudinal magnetic fields
The one-dimensional spin-1/2 model in a mixed transverse and
longitudinal magnetic field is studied. Using the specially developed version
of the mean-field approximation the order-disorder transition induced by the
magnetic field is investigated. The ground state phase diagram is obtained. The
behavior of the model in low transverse field is studied on the base of
conformal field theory. The relevance of our results to the observed phase
transition in the quasi-one-dimensional antiferromagnet is
discussed.Comment: 18 pages, 6 figure
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