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JUSTC Mathematics 10 October 2024

Yang–Mills bar connection and holomorphic structure

Teng Huang

In this note, we study the Yang–Mills bar connection $ A $, i.e., the curvature of $ A $ obeys $ \bar{\partial}_{A}^{\ast}F_{A}^{0,2} = 0 $, on a principal $ G $-bundle $ P $ over a compact complex manifold $ X $. According to the Koszul–Malgrange criterion, any holomorphic structure on $ P $ can be seen as a solution to this equation. Suppose that $ G = SU(2) $ or $ SO(3) $ and $ X $ is a complex surface with $ H^{1}(X,\mathbb{Z}_{2}) = 0 $. We then prove that the $ (0,2) $-part curvature of an irreducible Yang–Mills bar connection vanishes, i.e., $ (P,\bar{\partial}_{A}) $ is holomorphic.

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JUSTC Mathematics 10 October 2024

Invariant measure for cubic Fibonacci-like polynomials

Wenxiu Ma

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JUSTC Mathematics 10 October 2024

Mean field analysis of interacting network model with jumps

Zeqian Li

This paper considers an $ n $-particle jump-diffusion system with mean filed interaction, where the coefficients are locally Lipschitz continuous. We address the convergence as $ n\to\infty $ of the empirical measure of the jump-diffusions to the solution of a deterministic McKean–Vlasov equation. The strong well-posedness of the associated McKean–Vlasov equation and a corresponding propagation of chaos result are proven. In particular, we also provide precise estimates of the convergence speed with respect to a Wasserstein-like metric.

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JUSTC Management 10 October 2024

Trade credit contracting in a risk-averse supply chain under adverse selection and moral hazard

Zhihong Wang, Yuanyuan Xu, Yuwei Shao, Ziyi Chen, Yi Zhang

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JUSTC Management 18 April 2023

A hybrid trade-old-for-new and trade-old-for-remanufactured supply chain with carbon tax

Yu Dong, Wuqing Liao

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JUSTC Management 10 October 2024

Supply chain coordination with inventory risk allocation

Qingyi Wu, Shuang Xie

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JUSTC Article 11 October 2024

Effect of tantalum doping on the microstructure and photoelectrical properties of transparent conductive zinc oxide films

Kai Yi, Hongxu Jiang, Yanbo Cai, Guangwei Wang, Fei Liu, Deliang Wang

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JUSTC Article 11 September 2024

The effects of low-velocity layer and basin topography in near-field ground motion amplification

Zeyu Lu, Jian Wen, Feng Hu

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JUSTC Article 30 June 2023

Asymmetric connectedness between China’s carbon and energy markets based on TVP-VAR model

Yu Dong, Xue Yuan, Yuting Wei

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JUSTC Review 23 September 2024

An integrated theoretical framework based on the SOMR model

Shengliang Zhang, Jianhui Jin, Xiaodong Li

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JUSTC Management 27 August 2024

The in-depth transmission and reception process of the factors influencing review helpfulness from the signaling timeline perspective

Mohan Wang, Fei Wan, Jiaying Zhang, Songyun Xia

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JUSTC Management 18 August 2023

Estimation of peer pressure in dynamic homogeneous social networks

Jie Liu, Pengyi Wang, Jiayang Zhao, Yu Dong

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JUSTC Earth and Space 04 June 2024

Impact of modified SWAT plant growth module on modeling green and blue water resources in subtropics

Tianming Ma, Tianxiao Ma

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JUSTC Earth and Space 14 April 2023

Investigating the mechanisms driving the seasonal variations in surface PM_2.5 concentrations over East Africa with the WRF-Chem model

Nkurunziza Fabien Idrissa, Chun Zhao, Qiuyan Du, Shengfu Lin, Kagabo Safari Abdou, Weichen Liu, Xiaodong Wang

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JUSTC Earth and Space Sciences 20 April 2022

Sheared E × B flow encountered in space plasma excited from two controllable methods

Kexin Huang, Xiao Zhang, Rong Jin, Yu Liu, Jiuhou Lei

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JUSTC Original Paper

The progress in exploring the structure and

RUAN Jian-bin, ZANG Jian-ye

The discovery of histone demethylase LSD1 is an important progress in the field of epigenetics, indicating that histone lysine methylation is a reversible and dynamic process like other covalent histone modifications such as acetylation, phosphorylation and ubiquitylation.Structural and functional research results demonstrate that LSD1 regulates the activation and silencing of gene transcription and the function of p53. LSD1 plays a significant role in the development of several cancers and is a potential target protein for developing anti-cancer drugs.

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JUSTC Management Science and Engineering 20 April 2022

The influence and moderating effect of trust in streamers in a live streaming shopping environment

Qi Dai, Xiaolin Cui

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JUSTC

ABC transporters and human diseases

HOU Wentao, WANG Liang, XU Da, CHEN Yuxing, ZHOU Congzhao

Adenosine triphosphate（ATP） binding cassette transporters, known as ABC transporters, is a kind of active transporters which can be found in all kingdoms of life. It normally consists of four domains: two transmembrane domains (TMD) and two nucleotide-binding domains (NBD). NBDs hydrolyzes ATPs, and the produced energy can be used by TMDs to transport substrates across the membrane against the chemical potential. ABC transporters anticipate in a variety of physiological process, because almost all functional molecules can be recognized as substrates by ABC transporters. The human genome encodes 48 ABC transporters in total, and dysfunction of the transporters is directly related to some major diseases. This essay summarized the classification and features of human ABCs, and emphasized the latest research progress of structure studies of human ABC transporters, as well as their relations with human diseases.

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JUSTC Earth and Space Sciences 02 July 2022

An analytical study on early kick detection and well control considerations for casing while drilling technology

Said K. Elsayed, Hany M. Azab, Adel M. Salem

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JUSTC

Deducing for dynamic time warping distance

DENG Bo, DING Kun, JIANG Guoquan, ZHANG Bin

The current research achievements show that the dynamic time warping (DTW) is the best measure in most area of time series similarity measurements. However, the high time complexity for calculating DTW distance directly, and the fact that DTW does not satisfy the triangle inequality, render it impossible to deduce TWD quickly. Nowadays DTW optimizing methods are mainly devoted to designing low time complexity DTW low bound distances with low time complexity to accelerate time series comparison. Unfortunately, these DTW low bound distances cannot be deduced, either. Therefore, it must be compared one by one to compute time series similarity, which has high I/O cost. A novel educible DTW low bound distance is thus proposed, along with a corresponding index building method and a similar time series query algorithm. It is the first research on the DTW deducing problem. Extended experiment results show that compared to current technologies, the proposed method is efficient in both time complexity and I/O cost.

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JUSTC Review Article

Photocatalytic methane conversion over metal oxides: Fundamentals, achievements, and challenges

Jiang Wenbin, Low Jingxiang, Qiu Chang, Long Ran, Xiong Yujie

With the rapid development of combustible ice and shale gas mining technology, the reserve of methane (CH4) has been growing abundant. Therefore, there is a paradigm shift, where CH4 is not seen only as a hydrocarbon fuel, but also as carbon feedstocks for synthesizing various value-added chemicals. However, the conventional CH4 conversion technology, especially steam reforming of methane, normally requires extensive energy input due to the extremely stable bonding of CH4. To this end, photocatalysis, which can break the thermodynamic barrier of CH4 conversion, has been known as a promising candidate for reaching large-scale CH4 conversion under ambient condition. In the photocatalytic CH4 conversion researches, metal oxides have been extensively investigated mainly due to their high oxidation capability. In this review, a discussion is first given on the fundamentals of CH4 conversion and the advantages of metal oxides in such a reaction. Then the development of metal oxides-based photocatalysts in various CH4 conversion reactions is reviewed, including total oxidation of methane (TOM), partial oxidation of methane (POM), dry-reforming of methane (DRM), non-oxidative coupling of methane (NOCM), lattice oxygen mediated oxidative coupling of methane (LOCM) and so on. Finally, the opportunities of metal oxides-based photocatalytic CH4 conversion along with the challenges are summarized.

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JUSTC Information Science and Technology 11 May 2022

A data-driven model for social media fake news detection

Xin Chen, Shancheng Fang, Zhendong Mao, Yongdong Zhang