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433 results on '"Ren, Xinyu"'

4. A Target Detection Algorithm in Traffic Scenes Based on Deep Reinforcement Learning

Author

Ren, Xinyu and Wang, Ruixuan

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

This research presents a novel active detection model utilizing deep reinforcement learning to accurately detect traffic objects in real-world scenarios. The model employs a deep Q-network based on LSTM-CNN that identifies and aligns target zones with specific categories of traffic objects through implementing a top-down approach with efficient feature extraction of the environment. The model integrates historical and current actions and observations to make a comprehensive analysis. The design of the state space and reward function takes into account the impact of time steps to enable the model to complete the task in fewer steps. Tests conducted demonstrate the model's proficiency, exhibiting exceptional precision and performance in locating traffic signal lights and speed limit signs. The findings of this study highlight the efficacy and potential of the deep reinforcement learning-based active detection model in traffic-related applications, underscoring its robust detection abilities and promising performance., Comment: 14 pages, 4 figures, having passed the preliminary review by experts, about to be submitted to a relevant conference

Published
2023

5. PTEN Mutation Related Unilateral Multicentric, Synchronous and Metachronous Bilateral Breast Cancer: Three Case Reports

Author

YAO Ru, YANG Xu, QU Yang, LIAN Jie, ZHANG Jiahui, HUANG Xin, CHEN Chang, REN Xinyu, PAN Bo, ZHOU Yidong, and SUN Qiang

Subjects
pten mutation, breast cancer, bilateral breast cancer, cowden syndrome, Medicine
Abstract

Phosphatase and tensin-homolog deleted on chromosome 10 (PTEN) is an important cancer suppressor gene. Its pathogenic mutation leads to PTEN hamartoma tumor syndrome (PHTS), a rare syndrome also known as Cowden syndrome, which is relevant to early-onset hereditary breast cancer (BC). In this paper, we report three patients with unilateral multicentric BC and synchronous and metachronous bilateral BC who harbored PTEN gene mutations, and summarize the clinical manifestations, pathological characteristics, diagnosis, treatment and follow-up outcomes to provide reference for management of PTEN gene mutation-related BC among the Cowden syndrome population.

Published
2024
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6. TraInterSim: Adaptive and Planning-Aware Hybrid-Driven Traffic Intersection Simulation

Author

Lv, Pei, Pei, Xinming, Ren, Xinyu, Zhang, Yuzhen, Li, Chaochao, and Xu, Mingliang

Subjects
Computer Science - Robotics, Computer Science - Graphics
Abstract

Traffic intersections are important scenes that can be seen almost everywhere in the traffic system. Currently, most simulation methods perform well at highways and urban traffic networks. In intersection scenarios, the challenge lies in the lack of clearly defined lanes, where agents with various motion plannings converge in the central area from different directions. Traditional model-based methods are difficult to drive agents to move realistically at intersections without enough predefined lanes, while data-driven methods often require a large amount of high-quality input data. Simultaneously, tedious parameter tuning is inevitable involved to obtain the desired simulation results. In this paper, we present a novel adaptive and planning-aware hybrid-driven method (TraInterSim) to simulate traffic intersection scenarios. Our hybrid-driven method combines an optimization-based data-driven scheme with a velocity continuity model. It guides the agent's movements using real-world data and can generate those behaviors not present in the input data. Our optimization method fully considers velocity continuity, desired speed, direction guidance, and planning-aware collision avoidance. Agents can perceive others' motion planning and relative distance to avoid possible collisions. To preserve the individual flexibility of different agents, the parameters in our method are automatically adjusted during the simulation. TraInterSim can generate realistic behaviors of heterogeneous agents in different traffic intersection scenarios in interactive rates. Through extensive experiments as well as user studies, we validate the effectiveness and rationality of the proposed simulation method., Comment: 13 pages, 12 figures

Published
2022

7. Correlation of CD117 and DOG1 Expression with the Clinicopathological Features and Prognosis in Triple-negative Breast Cancer

Author

WANG Yajuan, WANG Yuan, and REN Xinyu

Subjects
triple-negative breast cancer, cd117, dog1, prognosis, Medicine
Abstract

ObjectiveTo investigate the expression of CD117 and DOG1 in triple-negative breast cancer (TNBC) and to explore their relationship with clinicopathologic features and prognosis.MethodsThe patients with TNBC in Peking Union Medical College Hospital from 2000 to 2011 were retrospectively collected and tissue microarrays were made. The expression of CD117 and DOG1 in tumor cells was detected by immunohistochemistry to analyze their relationship with the clinicopathological characteristics of the patients, such as age, tumor diameter, American Joint Committee on Cancer (AJCC) cancer stage, histological grade, P53, and Ki-67 proliferation index, and explore the effect of both on the survival of patients.ResultsA total of 185 TNBC patients meeting the inclusion and exclusion criteria were selected, of which 24 (12.97%) were CD117 positive and 22 (11.89%) were DOG1 positive, with a co-expression rate of 1.62%. Compared with CD117-negative patients, CD117-positive patients had higher Ki-67 proliferation index (87.50% vs. 67.70%, P=0.048), basal-like TNBC (95.83% vs. 74.53%, P=0.020), and P53 diffuse positive (33.33% vs. 13.66%, P=0.032).Compared with DOG1-negative patients, DOG1-positive patients had lower proportions of tumor diameter ≤2 cm (22.73% vs. 45.40%, P=0.026) and basal-like TNBC (54.55% vs. 80.37%, P=0.015). The median follow-up was 71 months (range: 2-170 months), 4 cases (2.16%) were lost to follow-up, 66 cases (35.68%) relapsed or had distant metastasis, and 34 cases (18.38%) died. Survival analysis showed that AJCC stage (HR=7.624, 95% CI: 2.187-26.576, P=0.001) and CD117 positive with P53 diffuse strong positive (HR=3.942, 95% CI: 1.366-11.379, P=0.011) were negatively correlated with the overall survival of TNBC patients.ConclusionsThe expression of CD117 and DOG1 were significantly related to basal-like TNBC, CD117 positive with P53 diffuse strong positive may be correlated with a shorter overall survival and a higher mortality risk.

Published
2024
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11. Boundedness of differential transforms for heat semigroups generated by fractional Laplacian

Author

Ren, Xinyu and Zhang, Chao

Subjects
Mathematics - Classical Analysis and ODEs, 42B20, 42B25
Abstract

In this paper we analyze the convergence of the following type of series \begin{equation*} T_N f(x)=\sum_{j=N_1}^{N_2} v_j\Big(e^{-a_{j+1}(-\Delta)^\alpha} f(x)-e^{-a_{j}(-\Delta)^\alpha} f(x)\Big),\quad x\in \mathbb R^n, \end{equation*} where $\{e^{-t(-\Delta)^\alpha} \}_{t>0}$ is the heat semigroup of the fractional Laplacian $(-\Delta)^\alpha,$ $N=(N_1, N_2)\in \mathbb Z^2$ with $N_1

Published
2021

31. Primary non-Hodgkin lymphoma of the tongue base: the clinicopathology of seven cases and evaluation of HPV and EBV status.

Author

Ren, Xinyu, Cheng, Yin, Wu, Shafei, Zeng, Xuan, Shi, Xiaohua, Ling, Qing, Li, Zongzhu, Liang, Zhiyong, and Wang, Beverly

Subjects
Humans, Herpesvirus 4, Human, Papillomaviridae, Epstein-Barr Virus Infections, Papillomavirus Infections, Lymphoma, Non-Hodgkin, Tongue Neoplasms, Adult, Aged, Aged, 80 and over, Middle Aged, Female, Male, Diffuse large B-cell lymphoma, EBV, HPV, Mantle cell lymphoma, Non-Hodgkin’s lymphoma, Peripheral T cell lymphoma, Tongue base, Orphan Drug, Dental/Oral and Craniofacial Disease, Lymphoma, Rare Diseases, Hematology, Infectious Diseases, Cancer, Clinical Research, 2.1 Biological and endogenous factors, Pathology
Abstract

ObjectivesNon-Hodgkin's lymphoma (NHL) primarily derived from the base of the tongue, is rare. Human papillomavirus (HPV) and Epstein-Barr virus (EBV) are important aetiological risk factors for tumours of the head and neck. This study describes the clinicopathological features of NHL in the tongue base and the status of HPV and EBV in these cases.MethodsSeven cases were identified from the Pathological Registry Database at Peking Union Medical College Hospital (PUMCH). The study utilized immunochemistry, in situ hybridization (ISH), and gene rearrangement to confirm the disease and and performed a clinical follow up for each case.ResultsAll 7 lymphomas were localized at the base of the tongue. Six of the cases exhibited tongue base masses with smooth surface membranes. One case presented as multiple deep ulcers. The most common histologic subtype was diffuse large B-cell lymphoma (DLBCL), which occurred in five cases. The other two cases were mantle cell lymphoma (MCL) and peripheral T cell lymphoma, not otherwise specified (PTCL, NOS). One of the DLBCL cases was positive for HPV DNA and diffusely expressed P16 protein. During the follow up period, the MCL patient and an elderly DLBCL patient died. The remaining five patients were alive through the end of follow up.ConclusionsMost lymphomas of the tongue base manifest as an endogenous mass without membranous change. The most common subtype of NHLs of the tongue base is DLBCL, and the occurrence at this site may have a good prognosis. With proper therapy, even late stage tongue base lymphomas can be suppressed and remain in remission.

Published
2020

37. GIS and New Trader Joe’s location in Colorado recommendation

Author

Ren, Xinyu, Striełkowski, Wadim, Editor-in-Chief, Black, Jessica M., Series Editor, Butterfield, Stephen A., Series Editor, Chang, Chi-Cheng, Series Editor, Cheng, Jiuqing, Series Editor, Dumanig, Francisco Perlas, Series Editor, Al-Mabuk, Radhi, Series Editor, Scheper-Hughes, Nancy, Series Editor, Urban, Mathias, Series Editor, Webb, Stephen, Series Editor, Holl, Augustin, editor, Chen, Jun, editor, and Guan, Guiyun, editor

Published
2022
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44. Lip Language Recognition System Based on AR Glasses

Author

Huang, Zhenzhen, Zhuang, Peidong, Ren, Xinyu, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Wang, Wei, editor, Liu, Xin, editor, Na, Zhenyu, editor, Li, Xiaoxia, editor, and Zhang, Baoju, editor

Published
2021
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45. Cover Image

Author

Wang, Yang, primary, Zhang, Chen, additional, Li, Helin, additional, Li, Hongyu, additional, Diao, Quanwei, additional, Ren, Xinyu, additional, Hao, Xinquan, additional, Lin, Bin, additional, and Yan, Shuai, additional

Published
2024
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