454 results for "Yanjun Li"
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Journal Article
Fracture instability and pre-splitting weakening characteristics of composite hard roof under mining action
In the process of mining, the elastic energy release of hard roof breaking is easy to induce impact disaster. In particular, there are multi-layer hard roofs above the coal seams in the Shaanxi-Inner Mongolia region. The mechanism of roof structure instability induced by the combined action is…
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Mathematical Modeling Methods and Their Application in the Analysis of Complex Signal Systems
Mathematical models are effective means of answers established by humans to solve real-world problems. Complex wireless communication can establish information interaction between vehicles, in order to reduce the delay time of the coordination control optimization timing scheme in coordination…
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Experimental Study on the Permeability of Microbial-Solidified Calcareous Sand Based on MICP
In the construction of artificial islands in distant seas, calcareous sand has been widely used as a foundation filler due to its excellent mechanical properties and extensive availability in the marine environment. How to store more fresh water on the artificial islands by reducing its…
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Research advances on rare metal pegmatite deposits
…and enriches together with rare metals in various complexes or compounds.Li-Cs-Ta type (LCT) pegmatites are closely related to S-type granites.The ore-forming materials are mainly originated from marine sediments like black shale, whereas Nb-Y-F type (NYF) pegmatites are generally associated with…
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Design and analysis of HSC-BPPV diagnostic maneuver based on virtual simulation
BackgroundThe preferred supine roll test for the diagnosis of horizontal semicircular canal BPPV has several disadvantages, including difficulty in locating the affected ear, inconsistent nystagmus performance on repeated testing, and lack of a typical latency period, resulting in insensitive…
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A Logic for Multi-Agent Conformant Planning Over Transition Systems
Reasoning about actions and information is one of the most active areas of research in artificial intelligence. In this article, we study the reasoning about actions and information in multi-agent conformant planning, which is an essential branch of artificial intelligence. We introduce a…
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Research on the Sustainable Development of Traditional Village Residential Dwellings in Northern Shaanxi, China
Traditional villages, protected as cultural heritage in our country, are rich in historical information, cultural landscapes, and traditional domestic architecture. This article explores the spatial distribution of traditional villages and proposes a new paradigm for the sustainable development of…
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Training Autoencoders Using Relative Entropy Constraints
Autoencoders are widely used for dimensionality reduction and feature extraction. The backpropagation algorithm for training the parameters of the autoencoder model suffers from problems such as slow convergence. Therefore, researchers propose forward propagation algorithms. However, the existing…
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Energy Characteristics of a Bidirectional Axial-Flow Pump with Two Impeller Airfoils Based on Entropy Production Analysis
This research sought to determine the spatial distribution of hydraulic losses for a bidirectional axial-flow pump with arc- and S-shaped impellers. The unsteady Reynolds time-averaged Stokes (URANS) approach with the SST k-omega model was used to predict the internal flow field. The total entropy…
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Children’s Non-symbolic and Symbolic Numerical Representations and Their Associations With Mathematical Ability
Most empirical evidence supports the view that non-symbolic and symbolic representations are foundations for advanced mathematical ability. However, the detailed development trajectories of these two types of representations in childhood are not very clear, nor are the different effects of…
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Fear of progression, loneliness, and hope in patients with gastrointestinal cancer: a cross-sectional relational study
IntroductionIn recent years, fear of disease progression (FoP) has become one of the most common psychological problems in cancer patients. However, there are fewer studies on the FoP in patients with gastrointestinal tumors. We aimed to assess the level of FoP in patients with gastrointestinal…
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Automatic non-symbolic numerosity processing in preschoolers
There has recently been an increasing focus on the development of automatic processing of numerical magnitude. However, little effort has been made to explore automatic access to non-symbolic numerical magnitude in preschool children. In experiment 1, we used a non-symbolic physical size comparison…
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Effects of Mathematics Anxiety and Mathematical Metacognition on Word Problem Solving in Children with and without Mathematical Learning Difficulties
Mathematics is one of the most objective, logical, and practical academic disciplines. Yet, in addition to cognitive skills, mathematical problem solving also involves affective factors. In the current study, we first investigated effects of mathematics anxiety (MA) and mathematical metacognition…
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Thermodynamics of charged accelerating AdS black holes and holographic heat engines
Abstract Using a reasonable choice in normalizing the timelike Killing vector, we investigate the thermodynamic properties of charged accelerating Anti-de Sitter (AdS) black holes. We find that the expression of the thermodynamic mass in the first law of thermodynamics displays an inextricably…
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energy expenditure, energy intake and nutritional indices in chinese peritoneal dialysis patients
The estimated energy expenditure is critical for prescribing an appropriate energy intake for dialysis patients. Unfortunately, it is often higher than actual energy intake from a single-point measurement. It is hypothesized that the difference might be reduced with repeated measurements. A total…
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Comprehensive Identification and Male-Biased Expression Analysis of Odorant-Binding Protein Genes in the Hawaiian Flower Thrips, Thrips hawaiiensis (Thysanoptera: Thripidae)
Olfaction is essential for key insect behaviors, such as host-seeking and mating, and is initiated by odorant-binding proteins (OBPs), which bind and transport hydrophobic odors. Thrips hawaiiensis is a major pest that infests the flowers of numerous horticultural crops, yet its chemosensory…
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Improving Zero-Shot Entity Linking With Chinese Feature Convolution Embeddings
Zero-shot entity linking (ZEL), a fundamental technique for many downstream natural language processing tasks, aims to accurately associate textual mentions with specific entities in a knowledge base. However, Chinese ZEL remains challenging due to the limited research on Chinese entity linking and…
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A Dynamic Epistemic Framework for Conformant Planning
In this paper, we introduce a lightweight dynamic epistemic logical framework for automated planning under initial uncertainty. We reduce plan verification and conformant planning to model checking problems of our logic. We show that the model checking problem of the iteration-free fragment is…
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Prediction of systemic inflammatory response syndrome and urosepsis after percutaneous nephrolithotomy by urine culture, stone culture, and renal pelvis urine culture: Systematic review and meta-analysis
Background: Percutaneous nephrolithotomy (PCNL) is thought to have an increased risk of infectious complications. This study evaluates the predictability of preoperative midstream urine culture (PMUC), stone culture (SC), and renal pelvis urine culture (RPUC) for post-PCNL systemic inflammatory…
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Engineering Biology of Yeast for Advanced Biomanufacturing
Advanced biomanufacturing has been widely involved in people’s daily life, such as the production of molecules used as pharmaceuticals, in foods and beverages, and in bio-fuels [...]