期刊：
SIAM JOURNAL ON MATHEMATICAL ANALYSIS,2024年56(2):2149-2170 ISSN：0036-1410
通讯作者：
Zhao, Y
作者机构：
[Li, Peijun] Acad Math & Syst Sci, Chinese Acad Sci, LSEC, ICMSEC, Beijing 100190, Peoples R China.;[Li, Peijun] Univ Chinese Acad Sci, Sch Math Sci, Beijing 100049, Peoples R China.;[Zhao, Yue; Yao, Xiaohua; Zhao, Y] Cent China Normal Univ, Sch Math & Stat, Wuhan 430079, Peoples R China.;[Zhao, Yue; Yao, Xiaohua; Zhao, Y] Cent China Normal Univ, Key Lab NAA MOE, Wuhan 430079, Peoples R China.
通讯机构：
[Zhao, Y ] C;Cent China Normal Univ, Sch Math & Stat, Wuhan 430079, Peoples R China.;Cent China Normal Univ, Key Lab NAA MOE, Wuhan 430079, Peoples R China.
摘要：
This paper addresses the meromorphic continuation of the outgoing resolvent associated with Schrodinger-type operators in three dimensions. The first part focuses on the classical Schrodinger-type operator involving unbounded potentials. The absence of nonzero real poles for the outgoing resolvent is investigated. The second part examines the fractional Schrodinger operator, including both bounded and unbounded potentials. The analysis relies on a resolvent identity that establishes a connection between the resolvents of the fractional Schrodinger operator and its classical counterpart.
关键词：
Interpersonal uncertainty;Social and emotional loneliness;Mobile phone addiction;Optimism;College students
摘要：
The main aim of this study was to investigate whether and how interpersonal uncertainty results in mobile phone addiction. Sampling 997 Chinese college students, we found that interpersonal uncertainty had positive predictive power for mobile phone addiction, and social and emotional loneliness mediated the link between interpersonal uncertainty and mobile phone addiction. Additionally, optimism moderated the direct effect of interpersonal uncertainty on mobile phone addiction and the first-stage mediating effect of interpersonal uncertainty on mobile phone addiction through social and emotional loneliness; that is, the higher the level of optimism among college students, the weaker the (in)direct effect of interpersonal uncertainty on mobile phone addiction. Our research findings reveal the role and mechanisms of interpersonal uncertainty in mobile phone addiction and shed light on the importance of reducing interpersonal uncertainty and fostering positive traits to effectively prevent and intervene in mobile phone addiction.
摘要：
The super tau-charm facility (STCF) is an electron-positron collider proposed by the Chinese particle physics community. It is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of 0.5 x 1035 cm-2 center dot s-1 or higher. The STCF will produce a data sample about a factor of 100 larger than that of the present tau-charm factory - the BEPCII, providing a unique platform for exploring the asymmetry of matter-antimatter (charge-parity violation), in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions, as well as searching for exotic hadrons and physics beyond the Standard Model. The STCF project in China is under development with an extensive R&D program. This document presents the physics opportunities at the STCF, describes conceptual designs of the STCF detector system, and discusses future plans for detector R&D and physics case studies.
作者机构：
[Fangxue Zhang; Xinping Xiao] School of Sciences, Wuhan University of Technology, 430070 Wuhan, China;[Mingyun Gao] School of Information Management, Central China Normal University, 430079 Wuhan, China
通讯机构：
[Xinping Xiao] S;School of Sciences, Wuhan University of Technology, 430070 Wuhan, China
摘要：
The neural ordinary differential equation (NODE) has attracted much attention for its applicability in dynamic system modeling and continuous time series analysis. When the sample size is limited, models often exhibit weak generalizability and robustness and are susceptible to overfitting. To address this, a novel multivariate grey neural differential equation model is proposed based on the grey model and NODE. The new model leverages the small-sample modeling capabilities of grey systems to enhance the overall generalizability. When the neural network structure changes, the proposed model can degenerate into other grey models, enhancing inclusiveness and adaptability. Two energy forecasting cases show that the new model achieves average MAPE values of 0.82% and 1.13% on the test sets. These values are significantly better than those of the other 10 benchmark models. Furthermore, the proposed model exhibits superior performance in terms of the MAE, RMSE, STD, and APE metrics compared to those of all contrastive models. This study demonstrates that the new model effectively enhances its predictive capabilities on limited nonlinear data, showcasing higher prediction accuracy, stronger adaptability, and better stability.
作者机构：
[Li, Guang; Xu, Weiwei; Hameed, Muhammad Salman; Yang, Qinglin; Li, Haibing; Qu, Haonan] Cent China Normal Univ, Coll Chem, Natl Key Lab Green Pesticide, Wuhan 430079, Peoples R China.;[Quan, Jiaxin; Quan, JX] Hanjiang Normal Univ, Dept Chem Biol & Environm Engn, Shiyan 442000, Peoples R China.;[Zhang, J; Zhang, Jin] Yunnan Normal Univ, Coll Chem & Chem Engn, Kunming 650092, Peoples R China.;[Sun, Zhongyue] Hubei Univ Chinese Med, Sch Lab Med, Wuhan 430065, Peoples R China.
通讯机构：
[Quan, JX ; Sun, ZY ] H;[Li, HB ] C;[Zhang, J ] Y;Cent China Normal Univ, Coll Chem, Natl Key Lab Green Pesticide, Wuhan 430079, Peoples R China.;Hanjiang Normal Univ, Dept Chem Biol & Environm Engn, Shiyan 442000, Peoples R China.
关键词：
arginine;biomimetic;mimic Cyt C transport;nanochannel;pH
摘要：
Proteins are vital components in cells, biological tissues, and organs, playing a pivotal role in growth and developmental processes in living organisms. Cytochrome C (Cyt C) is a class of heme proteins found in almost all life and is involved in cellular energy metabolic processes such as respiration, mainly as electron carriers or terminal reductases. It binds cardiolipin in the inner mitochondrial membrane, leading to apoptosis. It is a challenge to design a simple and effective artificial system to mimic the complex Cyt C biological transport process. In this paper, an asymmetric biomimetic pH-driven protein gate is described by introducing arginine (Arg) at one end of an hourglass-shaped nanochannel. The nanochannel shows a sensitive protonation-driven protein gate that can be "off" at pH = 7 and "on" at pH = 2. Further studies show that differences in the binding of Arg and Cyt C at different levels of protonation lead to different switching behaviors within the nanochannels, which in turn lead to different surface charges within the nanochannels. It can be used for detecting Cyt C and as an excellent and robust gate for developing integrated circuits and nanoelectronic logic devices.
作者机构：
[Yin, Ya; Chen, Zhao; Deng, Dian-Dian] Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, People's Republic of China;[Guan, Qichen] State Key Laboratory of Separation Membrane and Membrane Process, School of Chemistry, Tiangong University, Tianjin 300387, People's Republic of China;[Liu, Sheng Hua; Liu, Shanting] Xi'an Key Laboratory of Functional Organic Porous Materials, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, People's Republic of China;[Sun, Yue] National Key Laboratory of Green Pesticide, College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China
摘要：
Achieving high-contrast tricolor emissive regulation of a single-component molecule using a single type of external stimulus is highly desirable but challenging. In the present study, we report a symmetric acceptor-donor-acceptor (A-D-A)-type aggregation-induced emission-active luminogen, which displays a sequential high-contrast fluorescence switching just by anisotropic mechanical grinding. Specifically, upon light grinding, an orange-yellow-to-blue hypsochromic mechanofluorochromic response with a distinct color contrast (change in the maximum emission wavelength, Δλ(em,max) = 122 nm) is noticed, and the slightly ground solid exhibits a blue-to-red high-contrast (Δλ(em,max) = 185 nm) bathochromic mechanofluorochromic conversion upon vigorous grinding. Thus, using a single luminogen developed here, we can realize wide-range (Δλ(em,max) > 100 nm) hypso- and bathochromic fluorescence mechanochromisms simultaneously. The tricolored mechanofluorochromic phenomenon is attributed to two different morphological transitions involving crystalline-to-crystalline and crystalline-to-amorphous states. Furthermore, three information anticounterfeiting systems are developed using the luminogen presented here.
期刊：
International Journal of Computer-Supported Collaborative Learning,2024年:1-33 ISSN：1556-1607
通讯作者：
Zhang, Y
作者机构：
[Zhu, Zhifang; Ma, Jingsi; Luo, Heng; Lin, Yuru; Zhang, Yi; Chen, Dengkang; Zhang, Y] Cent China Normal Univ, Fac Artificial Intelligence Educ, Wuhan, Peoples R China.
通讯机构：
[Zhang, Y ] C;Cent China Normal Univ, Fac Artificial Intelligence Educ, Wuhan, Peoples R China.
关键词：
Group awareness;Computer-supported collaborative learning (CSCL);Learning performance;Three-level meta-analysis
摘要：
Group awareness (GA) is essential for computer-supported collaborative learning (CSCL), as it informs learners about other group members’ activities, knowledge, and emotions. A key advantage of GA support is that it can collect, process, and visualize GA information, which provides a basis for students’ reflection and adjustment during collaborative learning, thus facilitating their learning performance. However, empirical findings regarding the effectiveness of GA support have been inconsistent. The present study conducted the first three-level meta-analysis of 46 empirical studies to examine the effects of GA support on students’ learning performance and further explore the possible moderating factors that may have contributed to the inconsistencies of primary studies. The results indicated the following: (1) GA support in CSCL had a moderate significant effect on students’ learning performance (Hedges’g = 0.46, p < 0.001); (2) GA support in CSCL had the greatest influence on students’ cognitive development (Hedges’g = 0.49, p < 0.001), followed by behavioral participation (Hedges’g = 0.47, p < 0.001), and then social emotion (Hedges’g = 0.38, p < 0.001); and (3) GA support type and group size were the only two significant moderating factors. Based on these findings, we propose several theoretical and pedagogical implications.
摘要：
在中国的制造业已建成了门类齐全、独立完整的产业体系的今天,制造业的重要性已经被越来越多的人所认识.作为制造业后备军培养基地的理工类高职院校,其自身有着与普通高校不同的特点.在理工类院校高职英语课程中实施模块式教学模式,不仅着重语言学习的实用性,也能引起学生跨学科、将文理相结合的学习兴趣,能很好地完成英语教学.目前对模块式教学的相关研究已很多,但如何在理工类高职院校开展主题英语课程的模块式教学研究并不多.本文从分析目前高职院校教学现状开始,分析了工学背景下理工类高职院校英语教学中实施模块化教学的意义,并以"Made in China"产业发展主题为例,详细阐述了课程实施的过程、内容、教学实例、教学策略与实施效果.
作者：
Rui Zhou;Menglin L. N. Chen;Xintong Shi;Yan Ren;Zihao Yu;...
期刊：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION,2024年72(2):2058-2063 ISSN：0018-926X
作者机构：
[Menglin L. N. Chen] Department of Electrical and Electronic Engineering, The Hong Kong Polytechnic University, Hong Kong, China;[Xintong Shi; Yan Ren; Zihao Yu; Hai Lin] College of Physics Science and Technology, Central China Normal University, Wuhan, China;[Yu Tian] Department of Physics, School of Physics, Hubei University, Wuhan, China;Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu, and the Key Laboratory of Quantum Theory and Applications of MoE, Lanzhou University, Lanzhou, China;[Rui Zhou] Department of Electrical and Electronic Engineering, The Hong Kong Polytechnic University, Hong Kong, China<&wdkj&>College of Physics Science and Technology, Central China Normal University, Wuhan, China
摘要：
Waveguides are fundamental components in communication systems. However, they suffer from reflection and scattering losses at sharp routes or defects. The breakthrough in developing topological photonic crystals (PhCs) provides promising solutions to robust signal transmission. In this work, we propose a new mechanism for protecting wave-guiding modes by decorating the boundaries of a conventional waveguide with valley-Hall PhCs. This special layout enables the robust propagation of conventional transverse electric (TE) waves against defects and bends. Moreover, the proposed waveguide is compatible with the substrate-integrated waveguide (SIW). High-efficient mode conversion from the SIW to the proposed waveguide is achievable. By leveraging the idea of topology to conventional waveguides, we provide a powerful and practical tool that can largely improve the performance of microwave and millimeter-wave integrated circuits while reserving the features of wave-guiding modes.
