1.559 hasil untuk "Cheng PENG"
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Artikel Jurnal
Research on the breaking mechanism of bolts and cables in the gateway driven along a small coal pillar in the Datong mining area and the corresponding control technology
The gateway of the thick coal seam working face in the Datong mining area was excavated along a small coal pillar, resulting in serious bolt (cable) breaking failure, strong surrounding rock deformation, serious ground pressure appearance, and difficulties surrounding rock control. So, the bolt…
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Artikel Jurnal
N = 0 , 2 $$ \mathcal{N}=\left(0,\ 2\right) $$ SYK, chaos and higher-spins
Abstract We study a 2-dimensional SYK-like model with N = 0 , 2 $$ \mathcal{N}=\left(0,\ 2\right) $$ supersymmetry. The model describes N chiral supermultiplets and M Fermi supermultiplets with a (q + 1)- field interaction. We solve the model analytically and numerically in the N ≫ 1, M ≫ 1 limit…
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Artikel Jurnal
Vector models and generalized SYK models
Abstract We consider the relation between SYK-like models and vector models by studying a toy model where a tensor field is coupled with a vector field. By integrating out the tensor field, the toy model reduces to the Gross-Neveu model in 1 dimension. On the other hand, a certain perturbation can…
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Artikel Jurnal
Gut Microbiota, Short-Chain Fatty Acids, and Herbal Medicines
As an important source for traditional medical systems such as Ayurvedic medicine and traditional Chinese medicine, herbal medicines have received widespread attentions from all over the world, especially in developing countries. Over the past decade, studies on gut microbiota have generated rich…
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Artikel Jurnal
Does digitalization drive corporate green transformation?—Based on evidence from Chinese listed companies
Accelerating the digital transformation of enterprises, enabling enterprise operation and management with digitalization, and driving green transformation are important tasks to further promote the digital construction of a country. Based on the text data mining method, this paper investigates…
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Artikel Jurnal
Mechanical properties and microstructure analysis of welding-brazing of Al/ti butt joint with Zn foil additive
TIG welding-brazing features of 5052 Al alloy and Ti6Al4V alloy in butt configuration with Zn foil additive were studied with varying welding heat input. The joint morphology, mechanical performance, microstructure and joining mechanism were investigated in terms of experiment observation and…
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Artikel Jurnal
Soft modes in N $$ \mathcal{N} $$ = 2 SYK model
Abstract We study various properties of the soft modes in the N $$ \mathcal{N} $$ = 2 supersymmetric SYK model.
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Artikel Jurnal
Gauging the complex SYK model
Abstract Motivated by SYK-like models describing near-BPS black holes in string/M-theory, we consider gauging the U(1) symmetry of the complex SYK model in the presence of a Wilson line with charge k. At a fixed background gauge field, solutions to the Schwinger-Dyson equations display vastly…
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Artikel Jurnal
Effects of reasoning demands triggered by genre on Chinese EFL learners' writing performance
IntroductionGenres, having distinct communicative functions, elicit different levels of reasoning demands in writing tasks. The current study investigated the influence of cognitive complexity triggered by a seldom studied pair of genres (expository writing vs. argumentative writing) on Chinese…
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Artikel Jurnal Teks lengkap
Chemical Functionalization of Graphene Nanoplatelets with Hydroxyl, Amino, and Carboxylic Terminal Groups
As the most studied two-dimensional material, graphene is still attracting a lot of attention from both academia and industry due to its fantastic properties such as lightness, excellent mechanical strength, and high conductivity of heat and electricity. As an important branch of graphene…
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Artikel Jurnal
Chiral algebras of two-dimensional SYK models
Abstract We study chiral algebras in the Q ¯ $$ \overline{Q} $$ -cohomology of two dimensional SYK models with extended supersymmetry. In a special limit discovered in [1], we are able to construct explicitly a “vertical” single-particle higher-spin algebra that is bilinear in the fundamental…
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Artikel Jurnal
The Influence of Host Country’s Environmental Regulation on Enterprises’ Risk Preference of Multinational Investment
At present, China is in an important period of promoting high-quality economic development. In order to promote enterprises to “go global” and realize high-quality foreign investment, China advocates enterprises to abide by the environmental protection laws and regulations of the host country and…
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Artikel Jurnal
Spatially multimodal and multiscale network for representation learning from spatial multi-omics
Abstract Background Spatial multi-omics techniques provide powerful tools to decipher tissue architectures in multilayer perspectives, including gene expressions, gene regulations and microenvironments. The multimodal data integration is a critical step in spatial multi-omics data processing…
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Artikel Jurnal
Technological Over-involvement and Value-oriented Salvation: The Realistic Predicament and Way of Transcendence in the Compilation of Digital Textbooks
The compilation of digital textbooks faces the practical dilemma of technological over-involvement, characterized by several critical issues: the misuse and abuse of technology accelerate the alienation of educational value in digital textbooks; the dominance of instrumental rationality leads to an…
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Artikel Jurnal
A Study on an Improved Generative Adversarial Network Model for Super-Resolution Image Reconstruction
The SRGAN model based on Generative Adversarial Networks (GANs) has achieved breakthroughs in perceptual quality for image super-resolution reconstruction. However, existing models suffer from feature smoothing effects in the generator and unstable training of the discriminator. To address these…
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Artikel Jurnal
Urban density and residential solar adoption: evidence and theory
Residential solar photovoltaic (PV) systems have emerged as a key source of household energy consumption, contributing to urban sustainable development. Contrary to the commonly observed monotonic negative relationship between urban population density and PV installation, this study identifies an…
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Artikel Jurnal
Weighted residual network for SAR automatic target recognition with data augmentation
IntroductionDecades of research have been dedicated to overcoming the obstacles inherent in synthetic aperture radar (SAR) automatic target recognition (ATR). The rise of deep learning technologies has brought a wave of new possibilities, demonstrating significant progress in the field. However…
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Artikel Jurnal
The effects of EFL wordlist and proficiency on vocabulary knowledge
IntroductionThe Gaokao Word List (GWL) in China serves as a guideline for learning L2 vocabulary, but there are few studies verifying its effect on university EFL learners’ vocabulary knowledge.MethodThis study investigated the effects of the GWL and EFL proficiency on 66 Chinese university EFL…
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Artikel Jurnal
Integrated analysis on the “toxicity-efficacy” of toxic Chinese materia medica
[Abstract]: The Chinese materia medica (CMM) has been applied in the prevention and treatment of many diseases for thousands of years, including common diseases, frequently-occurring diseases, and rare diseases with remarkable curative effects. However, due to abuse or misuse, environmental…
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Artikel Jurnal
The impact of environmental information disclosure on enterprises’ green preference of outbound investment: Evidence from China
China is accelerating green and low-carbon transformation and promoting high-quality economic development. To effectively contribute to the improvement of global environmental quality and enhance enterprises’ awareness of environmental responsibility in the process of outbound investment, China…
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