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150 results on '"Xia, Yulong"'

3. HICH Image/Text (HICH-IT): Comprehensive Text and Image Datasets for Hypertensive Intracerebral Hemorrhage Research

Author

Li, Jie, Xia, Yulong, Yang, Tongxin, Cai, Fenglin, Wei, Miao, Zhang, Zhiwei, and Jiang, Li

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

In this paper, we introduce a new dataset in the medical field of hypertensive intracerebral hemorrhage (HICH), called HICH-IT, which includes both electronic medical records (EMRs) and head CT images. This dataset is designed to enhance the accuracy of artificial intelligence in the diagnosis and treatment of HICH. This dataset, built upon the foundation of standard text and image data, incorporates specific annotations within the EMRs, extracting key content from the text information, and categorizes the annotation content of imaging data into four types: brain midline, hematoma, left and right cerebral ventricle. HICH-IT aims to be a foundational dataset for feature learning in image segmentation tasks and named entity recognition. To further understand the dataset, we have trained deep learning algorithms to observe the performance. The pretrained models have been released at both www.daip.club and github.com/Deep-AI-Application-DAIP. The dataset has been uploaded to https://github.com/CYBUS123456/HICH-IT-Datasets. Index Terms-HICH, Deep learning, Intraparenchymal hemorrhage, named entity recognition, novel dataset

Published
2024

4. TarGF: Learning Target Gradient Field to Rearrange Objects without Explicit Goal Specification

Author

Wu, Mingdong, Zhong, Fangwei, Xia, Yulong, and Dong, Hao

Subjects
Computer Science - Machine Learning, Computer Science - Artificial Intelligence
Abstract

Object Rearrangement is to move objects from an initial state to a goal state. Here, we focus on a more practical setting in object rearrangement, i.e., rearranging objects from shuffled layouts to a normative target distribution without explicit goal specification. However, it remains challenging for AI agents, as it is hard to describe the target distribution (goal specification) for reward engineering or collect expert trajectories as demonstrations. Hence, it is infeasible to directly employ reinforcement learning or imitation learning algorithms to address the task. This paper aims to search for a policy only with a set of examples from a target distribution instead of a handcrafted reward function. We employ the score-matching objective to train a Target Gradient Field (TarGF), indicating a direction on each object to increase the likelihood of the target distribution. For object rearrangement, the TarGF can be used in two ways: 1) For model-based planning, we can cast the target gradient into a reference control and output actions with a distributed path planner; 2) For model-free reinforcement learning, the TarGF is not only used for estimating the likelihood-change as a reward but also provides suggested actions in residual policy learning. Experimental results in ball and room rearrangement demonstrate that our method significantly outperforms the state-of-the-art methods in the quality of the terminal state, the efficiency of the control process, and scalability.

Published
2022

6. Effect of baseline resting heart rate on the risk of all‐cause death in Chinese patients with hypertension

Author

Xia Yulong, Fan Fangfang, Huo Ya, Wei Yaping, Huang Meiqing, Zhang Yan, Li Jianping, Liu Lishun, Zhou Jing, and Huo Yong

Subjects
antihypertensive therapy, Asian patients, clinical trials, hypertension—general, risk assessment, Diseases of the circulatory (Cardiovascular) system, RC666-701
Abstract

Abstract The aim of this study was to investigate the association between baseline resting heart rate (RHR) and all‐cause death in the China Stroke Primary Prevention Trial (CSPPT). A post hoc analysis was conducted using data from 20,648 hypertensive adults without cardiovascular disease in the CSPPT and with baseline RHR data available. Over a median follow‐up duration of 4.5 years, the baseline RHR and risk for all‐cause death had a nonlinear relationship. The risk of all‐cause death was higher in participants with an RHR ≥85 bpm (hazard ratio 1.42; 95% confidence interval 1.03–1.96, p = .031) than in those with a baseline RHR of 75–80 bpm. The effect of RHR on all‐cause death during the treatment period was modified by the folate level (p = .020) and systolic blood pressure (SBP) during treatment(p = .056). The effect of RHR on the risk of all‐cause death was stronger when the folate level was low than when it was high; the risk was higher when the RHR was

Published
2022
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7. Ensemble Ranking for Image Retrieval via Deep Hash

Author

Li, Donggen, Dai, Dawei, Shan, Hongyuan, Xia, Shunyin, Xia, Yulong, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Pimenidis, Elias, editor, Angelov, Plamen, editor, Jayne, Chrisina, editor, Papaleonidas, Antonios, editor, and Aydin, Mehmet, editor

Published
2022
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26. Artery and venous sinus occlusion image score (AVOIS): A novel method to evaluate occlusive cerebral arteries and venous diseases

Author

Wu, Zhimin, primary, Feng, Qinglin, additional, Liu, Mengqi, additional, Li, Jie, additional, Sun, Xiaochuan, additional, Shi, Quanhong, additional, Zhan, Yan, additional, Dan, Wei, additional, Yang, Bocheng, additional, Zheng, Dinghao, additional, Xia, Yulong, additional, Xie, Yanfeng, additional, and Jiang, Li, additional

Published
2021
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44. Tolerogenic properties of CD206+ macrophages appeared in the sublingual mucosa after repeated antigen-painting.

Author

Yang, Yue, Nagai, Shigenori, Kang, Siwen, Xia, Yulong, Kawano, Yohei, Miyake, Kensuke, Karasuyama, Hajime, and Azuma, Miyuki

Subjects
MACROPHAGES, MOUTH, SUBLINGUAL immunotherapy, MUCOUS membranes, FLUORESCEIN isothiocyanate
Abstract

The sublingual mucosa (SLM) in the oral cavity is utilized as the site for sublingual immunotherapy to induce tolerance against allergens. We previously reported that CD206+ round-type macrophage-like cells were induced in the SLM after repeated antigen (e.g. cedar pollen or fluorescein isothiocyanate (FITC))-painting. In this study, we examined the phenotypic and functional properties of CD206+ cells induced by repeated FITC-painting on the SLM. CD206+ cells after the repeated FITC-painting possessed a macrophage-like CD11b+Ly6C+ F4/80+CD64+ phenotype and expressed TIM-4, which was expressed in tolerogenic tissue-resident macrophages, at a high level. SLM CD206+ cells preferentially expressed molecules related to endocytosis and homeostatic processes, including the novel B7 family of immune checkpoint molecules, as assessed by microarray analyses. SLM CD206+ cells showed preferential expression of M2-related genes such as Fizz1 , Aldh1a1 and Aldh1a2 but not Ym-1 and Arginase-1. A CD206+ cell-rich status inhibited OVA-specific CD4+ T-cell responses but reciprocally enhanced the proportion of both IL-10+CD4+ cells and Foxp3+ regulatory T-cells in regional lymph nodes. Co-culture of CD206+ cells with dendritic cells (DCs) showed that IL-12 production was suppressed in DCs concurrent with the decline of the MHC class IIhiCD86+ population, which was restored by neutralization of IL-10. These results demonstrate SLM CD206+ cells show the feature of tolerogenic macrophages and down-regulate the antigen-presenting cell function of mature DCs resulting in the inhibition of CD4+ T-cell responses. [ABSTRACT FROM AUTHOR]

Published
2020
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45. Systemic administration of a TLR7 agonist attenuates regulatory T cells by dendritic cell modification and overcomes resistance to PD-L1 blockade therapy

Author

Nishii, Naoto, primary, Tachinami, Hidetake, additional, Kondo, Yuta, additional, Xia, Yulong, additional, Kashima, Yoshihisa, additional, Ohno, Tatsukuni, additional, Nagai, Shigenori, additional, Li, Lixin, additional, Lau, Walter, additional, Harada, Hiroyuki, additional, and Azuma, Miyuki, additional

Published
2018
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46. The Potential Migrated Mechanism of Water-Soluble Components in Pellets Prepared by Wet Extrusion/Spheronization: Effect of Drying Rate

Author

Wang, Bingwei, Liu, Jianping, Li, Zhenghua, Xia, Yulong, Zhang, Shuangshuang, and Li, Ziyi

Abstract

Introduction: At present, there are numerous researches on the migration of components in tablets and granules, however, the investigation in the pharmaceutical literatures concerning the effect of drying rate on the migration of water-soluble components of pellets is limited. Temperature and Relative Humidity (RH) are crucial parameters during the drying process, which is an essential step in the preparation of pellets via wet extrusion/spheronization. To quantify these variables, the water loss percentage of pellets per minute is defined as the drying rate. Aim: The study aimed to investigate the influence of drying rate on the migration of water-soluble components in wet pellets and the potential migrated mechanism. Methods: The pellets containing tartrazine as a water-soluble model drug and microcrystalline cellulose as a matrix former were prepared by extrusion/spheronization and dried at four different drying temperatures and relative humidity. Afterwards, the extent of migrated tartrazine was assessed regarding appearance, in-vitro dissolution test, Differential Scanning Calorimetry, X-Ray Powder Diffraction, Attenuated total reflectance Fourier transform infrared spectroscopy and Confocal Raman Mapping. Results: Results demonstrated that red spots of tartrazine appeared on the surface of pellets and more than 40% tartrazine were burst released within 5 minutes when pellets were dried at 60°C/RH 10%. When pellets were dried at 40°C/RH 80%, none of these aforementioned phenomena were observed. Conclusion: In conclusion, the faster the drying rate was, the more tartrazine migrated to the exterior of pellets. Adjusting drying temperature and relative humidity appropriately could inhibit the migration of water-soluble components within wet extrusion/spheronization pellets.

Published
2021
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50. Design of a miniaturized L-band four-bit digital phase shifter

Author

Xia Yulong, Xia Zhenxing, An Sensong, and Zhu Qi

Subjects
L band, Materials science, Bandwidth (signal processing), Return loss, Miniaturization, Electronic engineering, Insertion loss, Wideband, Phase shift module, Differential phase
Abstract

The design of a miniaturized L-band four-bit digital phase-shifter having 14% bandwidth with low insertion loss is presented. The structure is based on loaded-line phase shifter combined with switched-line phase shifter, whereas, slow-wave line and bending line techniques are introduced for miniaturization purpose. Compared to traditional phase-shifter, the proposed structure is very compact in size i.e. 20mm×55mm. The measured results show that the designed phase shifter achieves better than ±5% differential phase stability, less than 2.2dB insertion loss, and better than 14dB return loss across the wideband 0.99–1.13 GHz.

Published
2015

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