2,724 results match your criteria: "Beijing University of Posts & Telecommunications[Affiliation]"

Low-Defect-Density Monolayer MoS Wafer by Oxygen-Assisted Growth-Repair Strategy.

Adv Sci (Weinh)

November 2024

State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China.

Atomic chalcogen vacancy is the most commonly observed defect category in two dimensional (2D) transition-metal dichalcogenides, which can be detrimental to the intrinsic properties and device performance. Here a low-defect density, high-uniform, wafer-scale single crystal epitaxial technology by in situ oxygen-incorporated "growth-repair" strategy is reported. For the first time, the oxygen-repairing efficiency on MoS monolayers at atomic scale is quantitatively evaluated.

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New quality productivity and environmental innovation: The hostile moderating roles of managerial empowerment and board centralization.

J Environ Manage

November 2024

Faculty of Humanities, Beijing University of Posts and Telecommunications, Beijing, China; Laucala Campus, University of the South Pacific, Suva, Fiji.

As new quality productivity (NQP) emerges as a rising star of productivity that can effectively leverage technological innovation and sustainability, this study aims to explore the relationship between NQP and environmental innovation, with a particular focus on the roles of managerial empowerment and board centralization within the context of China A-share listed companies. Utilizing the entire sample of China A-share market from 2013 to 2022, the study analyses the effectiveness of various dimensions reflecting innovation engagement among Chinese listed companies. For measuring NQP, the entropy method is employed to calculate the weights.

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Atypical social impairments (i.e., impaired social cognition and social communication) are vital manifestations of autism spectrum disorder (ASD) patients, and the incidence rate of ASD is significantly higher in males than in females.

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PTFE as a Multifunctional Binder for High-Current-Density Oxygen Evolution.

Adv Sci (Weinh)

November 2024

State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.

Binder plays a crucial role in constructing high-performance electrodes for water electrolysis. While most research has been focused on advancing electrocatalysts, the application of binders in electrode design has yet to be fully explored. Herein, the in situ incorporation of polytetrafluoroethylene (PTFE) as a multifunctional binder, which increases electrochemical active sites, enhances mass transfer, and strengthens the mechanical and chemical robustness of oxygen evolution reaction (OER) electrodes, is reported.

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Intrinsically stretchable QLEDs: Toward bright and vivid stretchable displays.

Sci Bull (Beijing)

October 2024

State Key Laboratory of Organic Electronics and Information Displays (SKLOEID), Institute of Advanced Materials (IAM), School of Chemistry and Life Sciences, Nanjing University of Posts and Telecommunications, Nanjing 210023, China. Electronic address:

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Material design and prospects for color-tunable smart-responsive organic emitters.

Sci Bull (Beijing)

November 2024

State Key Laboratory of Organic Electronics and Information Displays (SKLOEID), Institute of Advanced Materials (IAM), School of Chemistry and Life Sciences, Nanjing University of Posts & Telecommunications, Nanjing 210023, China. Electronic address:

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Room-temperature ferroelectric, piezoelectric and resistive switching behaviors of single-element Te nanowires.

Nat Commun

September 2024

Key Laboratory of Inteligent Optoelectronic Devices and Chips of Jiangsu Higher Education Institutions, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou, China.

Ferroelectrics are essential in memory devices for multi-bit storage and high-density integration. Ferroelectricity mainly exists in compounds but rare in single-element materials due to their lack of spontaneous polarization in the latter. However, we report a room-temperature ferroelectricity in quasi-one-dimensional Te nanowires.

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Determinants of successful disease control through voluntary quarantine dynamics on social networks.

Math Biosci

November 2024

Department of Mathematics, Dartmouth College, Hanover, NH 03755, USA; Department of Biomedical Data Science, Geisel School of Medicine at Dartmouth, Lebanon, NH 03756, USA. Electronic address:

In the wake of epidemics, quarantine measures are typically recommended by health authorities or governments to help control the spread of the disease. Compared with mandatory quarantine, voluntary quarantine offers individuals the liberty to decide whether to isolate themselves in case of infection exposure, driven by their personal assessment of the trade-off between economic loss and health risks as well as their own sense of social responsibility and concern for public health. To better understand self-motivated health behavior choices under these factors, here we incorporate voluntary quarantine into an endemic disease model - the susceptible-infected-susceptible (SIS) model - and perform comprehensive agent-based simulations to characterize the resulting behavior-disease interactions in structured populations.

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ChatMol: interactive molecular discovery with natural language.

Bioinformatics

September 2024

Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China.

Motivation: Natural language is poised to become a key medium for human-machine interactions in the era of large language models. In the field of biochemistry, tasks such as property prediction and molecule mining are critically important yet technically challenging. Bridging molecular expressions in natural language and chemical language can significantly enhance the interpretability and ease of these tasks.

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Super-stealth dicing technology opens a new era for nanofabrication of transparent solids.

Sci Bull (Beijing)

November 2024

College of Electronic and Optical Engineering and College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China. Electronic address:

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Researchers have investigated the potential of leveraging pre-trained language models, such as CodeBERT, to enhance source code-related tasks. Previous methodologies have relied on CodeBERT's '[CLS]' token as the embedding representation of input sequences for task performance, necessitating additional neural network layers to enhance feature representation, which in turn increases computational expenses. These approaches have also failed to fully leverage the comprehensive knowledge inherent within the source code and its associated text, potentially limiting classification efficacy.

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Background: The mpox pandemic has caused widespread public concern around the world. The spread of misinformation through the internet and social media could lead to an infodemic that poses challenges to mpox control.

Objective: This review aims to summarize mpox-related infodemiology studies to determine the characteristics, influence, prevention, and control measures of the mpox infodemic and propose prospects for future research.

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Extant research demonstrates the destructive nature of authoritarian leadership in the workplace, yet its widespread use suggests that a more balanced view of this leadership style may be needed to identify whether this form of leadership engenders favorable reactions in specific circumstances. Integrating insights from appraisal theory and the compensatory control model, we posit that authoritarian leadership can evoke anxiety among employees in less disruptive settings, whereas it evokes feelings of awe in highly disruptive contexts. These anxiety and awe reactions then influence employees' downstream leader-focused behaviors (i.

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A Novel Two-Step Channel Estimation Method for RIS-Assisted mmWave Systems.

Sensors (Basel)

August 2024

School of Information and Communications Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China.

In this work, we resolve the cascaded channel estimation problem and the reflected channel estimation problem for the reconfigurable intelligent surface (RIS)-assisted millimeter-wave (mmWave) systems. The novel two-step method contains modified multiple population genetic algorithm (MMPGA), least squares (LS), residual network (ResNet), and multi-task regression model. In the first step, the proposed MMPGA-LS optimizes the crossover strategy and mutation strategy.

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The accuracy of aerial work platform weighing is essential for safety. However, in practice, the same weight placed at different locations on the platform can yield varying readings, which is a phenomenon known as eccentric load. Measurement errors caused by eccentric loads can lead to missed detections and false alarms in the vehicle safety system, seriously affecting the safety of aerial work.

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In this paper, we proposed Mix-VIO, a monocular and binocular visual-inertial odometry, to address the issue where conventional visual front-end tracking often fails under dynamic lighting and image blur conditions. Mix-VIO adopts a hybrid tracking approach, combining traditional handcrafted tracking techniques with Deep Neural Network (DNN)-based feature extraction and matching pipelines. The system employs deep learning methods for rapid feature point detection, while integrating traditional optical flow methods and deep learning-based sparse feature matching methods to enhance front-end tracking performance under rapid camera motion and environmental illumination changes.

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Article Synopsis
  • Digital twin networks (DTNs) are emerging tools for estimating network strategy performance in split learning (SL) tasks, but they face challenges like varying data distributions and inaccurate device reporting.
  • The TransNeural algorithm proposed in this paper uses transformers to model data similarities and leverages neural networks to analyze the complex relationships affecting SL latency and convergence.
  • Simulations demonstrate that TransNeural significantly improves accuracy in both latency (by 9.3%) and convergence (by 22.4%) compared to traditional methods.
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Railway transportation has been integrated into people's lives. According to the "Notice on the release of the General Technical Specification of High-speed Railway Power Supply Safety Testing (6C System) System" issued by the National Railway Administration of China in 2012, it is required to install pantograph and slide monitoring devices in high-speed railway stations, station throats and the inlet and exit lines of high-speed railway sections, and it is required to detect the damage of the slider with high precision. It can be seen that the good condition of the pantograph slider is very important for the normal operation of the railway system.

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Precision synthesis of diblock copolymers free radical photopolymerization.

Chem Commun (Camb)

October 2024

State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China.

Diblock copolymers of phenyl methacrylate (PMA) and butyl methacrylate (BMA) were synthesized using dual-wavelength photopolymerization with a bifunctional photoinitiator 2-(4-(2-hydroxy-2-methylpropanoyl)phenoxy)ethyl()-3-(1-methyl-1-pyrrol-2-yl)acrylate (PAA-2959).

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Conductive hydrogel is considered to be one of the most potential sensing materials for wearable strain sensors. However, both the hydrophilicity of polymer chains and high water content severely inhibit the potential applications of hydrogel-based sensors in extreme conditions. In this study, a multicross-linked hydrogel was prepared by simultaneously introducing a double-network matrix, multiple conductive fillers, and free-moving ions, which can withstand an ultralow temperature below -80 °C.

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Deep learning-enhanced R-loop prediction provides mechanistic implications for repeat expansion diseases.

iScience

August 2024

State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Chemistry and Biomedicine Innovation Center (ChemBIC), Department of Neurology at Nanjing Drum Tower Hospital, Nanjing University, Nanjing, Jiangsu 210023, China.

R-loops play diverse functional roles, but controversial genomic localization of R-loops have emerged from experimental approaches, posing significant challenges for R-loop research. The development and application of an accurate computational tool for studying human R-loops remains an unmet need. Here, we introduce DeepER, a deep learning-enhanced R-loop prediction tool.

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Major depressive disorder (MDD) is currently the most common psychiatric disorder in the world. It characterized by a high incidence of disease with the symptoms like depressed mood, slowed thinking, and reduced cognitive function. Without timely intervention, there is a 20-30% risk of conversion to treatment-resistant depression (TRD) and a high burden for the patient, family and society.

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Fabraction of edible bio-nanocomposite coatings from pectin-containing lignocellulosic nanofibers isolated from apple pomace.

Int J Biol Macromol

November 2024

The Engineering Research Center for High-Valued Utilization of Fruit Resources in Western China, Ministry of Education, National Research & Development Center of Apple Processing Technology, College of Food Engineering and Nutritional Science, Shaanxi Normal University, 620 West Changan Avenue, Changan, Xi'an 710119, PR China. Electronic address:

Minimally processed fruits are increasingly demanded in modern society, but the management of perishable waste pomaces (WPs) and the products' short shelf-life are still big issues. Here, a facile approach of reconstruing apple pomace (AP) into edible bio-nanocomposite coatings of fresh-cutting apple slices was successfully developed through alkaline demethylation followed by high-pressure homogenization. The fibrillation of AP fibers is largely improved by -COO at a concentration of 1.

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Article Synopsis
  • Network platforms have changed how feminist discussions spread, particularly through the rise of oriental feminism on Chinese social media, which has led to increased public discourse on gender issues.
  • The case study focuses on the 2022 Tangshan restaurant attack, analyzing over 366,000 communication nodes to explore how different types of content—information, opinion, and appeasement—interact within communication networks.
  • Findings show that information and appeasement types have similar patterns in communication, with authoritative sources driving information spread, while opinion-type content has a broader reach and deeper engagement, indicating a more active participation from users in discussions.
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An efficient dual-domain deep learning network for sparse-view CT reconstruction.

Comput Methods Programs Biomed

November 2024

Geneva University Hospital, Division of Nuclear Medicine and Molecular Imaging, CH-1211 Geneva, Switzerland; Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Groningen, Netherlands; Department of Nuclear Medicine, University of Southern Denmark, Odense, Denmark; University Research and Innovation Center, Óbuda University, Budapest, Hungary. Electronic address:

Article Synopsis
  • Developed an efficient dual-domain deep-learning method for sparse-view CT reconstruction with minimal training parameters and comparable running time.
  • Designed two lightweight networks, Sino-Net and Img-Net, to restore projection and image signals, tested using clinical thoraco-abdominal CT data.
  • Results indicated the algorithm effectively reduced noise and artifacts, restored fine details, and improved overall image quality, showcasing its potential for practical clinical use.
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