2,138 research outputs found
The signatures of the new particles and at e-p colliders in the model
Considering the superior performances of the future e-p colliders, LHeC and
FCC-eh, we discuss the feasibility of detecting the extra neutral scalar
and the light gauge boson , which are predicted by the
model. Taking into account the experimental
constraints on the relevant free parameters, we consider all possible
production channels of and at e-p colliders and
further investigate their observability through the optimal channels in the
case of the beam polarization P()= -0.8. We find that the signal
significance above 5 of as well as detecting
can be achieved via
process and a 5 sensitivity of detecting can be gained
via
process at e-p colliders with appropriate parameter values and a designed
integrated luminosity. However, the signals of decays into pair of SM
particles are difficult to be detected.Comment: 22 pages, 9 figures, references added and typos are correcte
A second orthorhombic polymorph of 2-(pyridin-4-ylmethoxy)phenol
The crystal structure of the title compound, C12H11NO2, represents a new orthorhombic polymorph II of the previously reported orthorhombic form I [Zhang et al. (2009 ▶) Acta Cryst. E65, o3160]. In polymorph II, the six-membered rings form a dihedral angle of 13.8 (1)° [71.6 (1)° in I], and O—H⋯N hydrogen bonds link molecules into chains along [100], whereas the crystal structure of I features hydrogen-bonded centrosymmetric dimers
VisKoP: Visual Knowledge oriented Programming for Interactive Knowledge Base Question Answering
We present Visual Knowledge oriented Programming platform (VisKoP), a
knowledge base question answering (KBQA) system that integrates human into the
loop to edit and debug the knowledge base (KB) queries. VisKoP not only
provides a neural program induction module, which converts natural language
questions into knowledge oriented program language (KoPL), but also maps KoPL
programs into graphical elements. KoPL programs can be edited with simple
graphical operators, such as dragging to add knowledge operators and slot
filling to designate operator arguments. Moreover, VisKoP provides
auto-completion for its knowledge base schema and users can easily debug the
KoPL program by checking its intermediate results. To facilitate the practical
KBQA on a million-entity-level KB, we design a highly efficient KoPL execution
engine for the back-end. Experiment results show that VisKoP is highly
efficient and user interaction can fix a large portion of wrong KoPL programs
to acquire the correct answer. The VisKoP online demo
https://demoviskop.xlore.cn (Stable release of this paper) and
https://viskop.xlore.cn (Beta release with new features), highly efficient KoPL
engine https://pypi.org/project/kopl-engine, and screencast video
https://youtu.be/zAbJtxFPTXo are now publicly available
Lightweight Neural Network with Knowledge Distillation for CSI Feedback
Deep learning (DL) has shown promise in enhancing channel state information
(CSI) feedback. However, many studies indicate that better feedback performance
often accompanies higher computational complexity. Pursuing better
performance-complexity tradeoffs is crucial to facilitate practical deployment,
especially on computation-limited devices, which may have to use lightweight
autoencoder with unfavorable performance. To achieve this goal, this paper
introduces knowledge distillation (KD) to achieve better tradeoffs, where
knowledge from a complicated teacher autoencoder is transferred to a
lightweight student autoencoder for performance improvement. Specifically, two
methods are proposed for implementation. Firstly, an autoencoder KD-based
method is introduced by training a student autoencoder to mimic the
reconstructed CSI of a pretrained teacher autoencoder. Secondly, an encoder
KD-based method is proposed to reduce training overhead by performing KD only
on the student encoder. Additionally, a variant of encoder KD is introduced to
protect user equipment and base station vendor intellectual property. Numerical
simulations demonstrate that the proposed KD methods can significantly improve
the student autoencoder's performance, while reducing the number of floating
point operations and inference time to 3.05%-5.28% and 13.80%-14.76% of the
teacher network, respectively. Furthermore, the variant encoder KD method
effectively enhances the student autoencoder's generalization capability across
different scenarios, environments, and bandwidths.Comment: 28 pages, 4 figure
STUDY ON OPTIMISATION OF EXTRACTION PROCESS OF TANSHINONE ⅡA AND ITS MECHANISM OF INDUCTION OF GASTRIC CANCER SGC7901 CELL APOPTOSIS
The objective of this paper was to investigate the extraction process of tanshinone ⅡA and its mechanism of induction of gastric cancer SGC7901 cell apoptosis. Extraction process of tanshinone ⅡA was optimised by orthogonal experimental method, and its effect on gastric cancer SGC7901 cell apoptosis was observed using MTT assay and electron microscopy. The optimum extraction process of tanshinone ⅡA was as follows: addition of a 10-fold amount of 80% ethanol, one-time extraction, and extraction time of 45 minutes. The study concluded that tanshinone ⅡA can induce apoptosis of gastric cancer SGC7901 cells
[1,2-Bis(2-pyridylmethoxy)benzene-κ4 N,O,O′,N′]bis(nitrato-κO)copper(II)
In the title compound, [Cu(NO3)2(C18H16N2O2)], the CuII ion is six-coordinated in a Jahn–Teller-distorted octahedral environment defined by two O and two N atoms from the ligand and two O atoms from two monodentate nitrate anions
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