3,652 research outputs found
Effect of chloride and sulfate ions in simulated boiler water on pitting corrosion behavior of 13Cr steel
The pitting corrosion behavior of 13Cr steel was investigated in simulated boiler waters containing chloride ions (Cl-) and sulfate ions (SO42-) using potentiodynamic and potentiostatic polarization tests in addition to pit morphology analysis. The presence of 100 ppm cl(-) in the water caused pitting corrosion of the steel. Pit initiation was inhibited by the addition of 50 ppm or 100 ppm SO42- into the water containing 100 ppm Cl-. Pit growth was also suppressed by the presence of 50 ppm SO42- in the water with 100 ppm Cl-; however, it was conversely promoted in the presence of 100 ppm SO42-. (C) 2015 Elsevier Ltd. All rights reserved.ArticleCORROSION SCIENCE. 96:171-177 (2015)journal articl
Spin Polarized and Valley Helical Edge Modes in Graphene Nanoribbons
Inspired by recent progress in fabricating precisely zigzag-edged graphene
nanoribbons and the observation of edge magnetism, we find that spin polarized
edge modes with well-defined valley index can exist in a bulk energy gap opened
by a staggered sublattice potential such as that provided by a hexagonal
Boron-Nitride substrate. Our result is obtained by both tight-binding model and
first principles calculations. These edge modes are helical with respect to the
valley degree of freedom, and are robust against scattering, as long as the
disorder potential is smooth over atomic scale, resulting from the protection
of the large momentum separation of the valleys.Comment: 4 pages, 4 figure
NAS-ASDet: An Adaptive Design Method for Surface Defect Detection Network using Neural Architecture Search
Deep convolutional neural networks (CNNs) have been widely used in surface
defect detection. However, no CNN architecture is suitable for all detection
tasks and designing effective task-specific requires considerable effort. The
neural architecture search (NAS) technology makes it possible to automatically
generate adaptive data-driven networks. Here, we propose a new method called
NAS-ASDet to adaptively design network for surface defect detection. First, a
refined and industry-appropriate search space that can adaptively adjust the
feature distribution is designed, which consists of repeatedly stacked basic
novel cells with searchable attention operations. Then, a progressive search
strategy with a deep supervision mechanism is used to explore the search space
faster and better. This method can design high-performance and lightweight
defect detection networks with data scarcity in industrial scenarios. The
experimental results on four datasets demonstrate that the proposed method
achieves superior performance and a relatively lighter model size compared to
other competitive methods, including both manual and NAS-based approaches
STUDY ON GYMNASTICS RING MOVEMENTS USING FORCE MEASURING SYSTEM
The purpose of this paper was to analyze five giant-swing phases performed on the rings using force-measuring system, which was synchronized with EMG and film. The results showed similar patterns in pulling force, shoulder angle, hip angle, hip velocity and ankle velocity when performing the movements of backward swing phase, dropped shoulder, giant-swing, and upward swing phase. The pulling-force changed from smaller than the body weight to greater than the body weight in the process of the backward swing. The first peak of pulling force occurred as shoulder drop phase ends. The second peak of pulling force occurred in the backward swing phase. The pulling force decreased gradually in the process of the upward swing
Correction: Zhou, Z.-B. et al. Receptor-Mediated Vascular Smooth Muscle Migration Induced by LPA Involves p38 Mitogen-Activated Protein Kinase Pathway Activation. Int. J. Mol. Sci. 2009, 10, 3194–3208
Due to personal reasons, I left the research group. In accordance with the regulations of the funding institution, Xiamen Health Administration, China, I hereby declare a withdrawal of my signature, Zhi-Jun Zhang, from this paper. [...
Direct Adversarial Training: A New Approach for Stabilizing The Training Process of GANs
Generative Adversarial Networks (GANs) are the most popular models for image
generation by optimizing discriminator and generator jointly and gradually.
However, instability in training process is still one of the open problems for
all GAN-based algorithms. In order to stabilize training, some regularization
and normalization techniques have been proposed to make discriminator meet the
Lipschitz continuity constraint. In this paper, a new approach inspired by
works on adversarial attack is proposed to stabilize the training process of
GANs. It is found that sometimes the images generated by the generator play a
role just like adversarial examples for discriminator during the training
process, which might be a part of the reason of the unstable training. With
this discovery, we propose to introduce a adversarial training method into the
training process of GANs to improve its stabilization. We prove that this DAT
can limit the Lipschitz constant of the discriminator adaptively. The advanced
performance of the proposed method is verified on multiple baseline and SOTA
networks, such as DCGAN, WGAN, Spectral Normalization GAN, Self-supervised GAN
and Information Maximum GAN
FAIR: Flow Type-Aware Pre-Training of Compiler Intermediate Representations
While the majority of existing pre-trained models from code learn source code
features such as code tokens and abstract syntax trees, there are some other
works that focus on learning from compiler intermediate representations (IRs).
Existing IR-based models typically utilize IR features such as instructions,
control and data flow graphs (CDFGs), call graphs, etc. However, these methods
confuse variable nodes and instruction nodes in a CDFG and fail to distinguish
different types of flows, and the neural networks they use fail to capture
long-distance dependencies and have over-smoothing and over-squashing problems.
To address these weaknesses, we propose FAIR, a Flow type-Aware pre-trained
model for IR that involves employing (1) a novel input representation of IR
programs; (2) Graph Transformer to address over-smoothing, over-squashing and
long-dependencies problems; and (3) five pre-training tasks that we
specifically propose to enable FAIR to learn the semantics of IR tokens, flow
type information, and the overall representation of IR. Experimental results
show that FAIR can achieve state-of-the-art results on four code-related
downstream tasks.Comment: ICSE 2024 First Cycl
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