Zixiang Chen

Quantitative generation of diffusion-weighted imaging from non-contrast CT in acute ischemic stroke: a multi-scanner deep-learning model with external validation

Zhihua Li, Mifang Li, Zixiang Chen, Yuxi Jin et autres

Background: Acute ischemic stroke (AIS) is a leading cause of death and disability worldwide, where early diagnosis and treatment are crucial for effective management. Computed tomography (CT), particularly non-contrast CT, is widely used due to its speed and low cost; however, it …

mo, cn (code pays fourni par la source)

BehaviorBench: Modeling Real-World User Decisions from Behavioral Traces

Liangwei Yang, Jielin Qiu, Zixiang Chen, Ming Zhu et autres

Many decision-support settings require systems that adapt to individual users, but evaluation data for this problem remain limited. Existing benchmarks for user understanding often rely on simulated users or model-generated behavior, even though recent work cautions that model-based simulations can diverge systematically …

BehaviorBench: Modeling Real-World User Decisions from Behavioral Traces

Liangwei Yang, Jielin Qiu, Zixiang Chen, Ming Zhu et autres

Many decision-support settings require systems that adapt to individual users, but evaluation data for this problem remain limited. Existing benchmarks for user understanding often rely on simulated users or model-generated behavior, even though recent work cautions that model-based simulations can diverge systematically …

Virtual Factor: System Architecture, Data Model, and Operational Semantics — A Sequel to the Conceptual Definition

Zixiang Chen

续“虚拟因子概念定义”之后 本文是前期发表的“虚拟因子:一种面向建造交互的内嵌物理属性可操作物质单元的概念定义”(Zenodo, DOI: 10.5281/zenodo.19638634)的续篇,聚焦于系统的数据架构、核心数据结构和操作语义,为后续工程实现提供蓝图。 在前期的概念定义中,我们提出了“虚拟因子”(Virtual Factor)作为一种由投影呈现、传感器操控、内嵌实时物理属性且相互联动的可操作物质单元。本文在此基础之上,给出三个核心层面的技术规范: 1. 数据架构:构建利用BIM传统数据库但保持连接的“虚拟因子实时数据库”,明确二者之间的数据边界与同步协议。 2. 操作语义:定义因子的生命周期——从未定义几何的“胚胎态”到被赋予几何后的“定型态”,以及违反物理一致性时的“坍缩”机制。 3. 数据结构:给出虚拟因子的核心类型定义(以伪代码形式),强调“几何从物理派生”而非存储的元模型。 本文旨在将概念定义转化为可工程化的系统设计,为后续的求解器实现、交互层开发及与BIM生态的集成提供统一的技术参照。 关键词:虚拟因子;数据架构;操作语义;物理派生几何;因子坍缩;Virtual Factor; Data Architecture; Operational Semantics; Physics-derived Geometry

Virtual Factor: System Architecture, Data Model, and Operational Semantics — A Sequel to the Conceptual Definition

Zixiang Chen

续“虚拟因子概念定义”之后 本文是前期发表的“虚拟因子:一种面向建造交互的内嵌物理属性可操作物质单元的概念定义”(Zenodo, DOI: 10.5281/zenodo.19638634)的续篇,聚焦于系统的数据架构、核心数据结构和操作语义,为后续工程实现提供蓝图。 在前期的概念定义中,我们提出了“虚拟因子”(Virtual Factor)作为一种由投影呈现、传感器操控、内嵌实时物理属性且相互联动的可操作物质单元。本文在此基础之上,给出三个核心层面的技术规范: 1. 数据架构:构建利用BIM传统数据库但保持连接的“虚拟因子实时数据库”,明确二者之间的数据边界与同步协议。 2. 操作语义:定义因子的生命周期——从未定义几何的“胚胎态”到被赋予几何后的“定型态”,以及违反物理一致性时的“坍缩”机制。 3. 数据结构:给出虚拟因子的核心类型定义(以伪代码形式),强调“几何从物理派生”而非存储的元模型。 本文旨在将概念定义转化为可工程化的系统设计,为后续的求解器实现、交互层开发及与BIM生态的集成提供统一的技术参照。 关键词:虚拟因子;数据架构;操作语义;物理派生几何;因子坍缩;Virtual Factor; Data Architecture; Operational Semantics; Physics-derived Geometry

Unveiling Patients’ Concerns Before Plastic Surgery: A Cross-Sectional Study

Yiou Wang, Yuanbo Liu, Shan Zhu, Shanshan Li et autres

cn (code pays fourni par la source)

Myeloid‐Derived Suppressor Cell–Derived Interferon‐β Promotes T Follicular Helper Cell Response and Exacerbates Lupus Development

Ke Rui, Zixiang Chen, Jun Liu, Wei Huang et autres

Objective Increasing evidence highlights a critical role of T follicular helper (Tfh) cells in autoimmune pathogenesis. This study aimed to identify inflammatory cytokines involved in driving Tfh cell responses in systemic lupus erythematosus (SLE). Methods The circulating Tfh frequencies and interferon (IFN)‐β …

cn, hk (code pays fourni par la source)

Noninvasive functional brain imaging for Parkinson’s disease using conditional diffusion models

Chunfa Liu, Fan Fu, Yuxi Jin, Haizhou Liu et autres

FP-CIT PET imaging is essential for evaluating dopaminergic function and diagnosing PD, but its high cost and radiation exposure limit routine clinical use. Patients are often subjected to multiple imaging procedures, including MRI and FDG PET, before undergoing FP-CIT PET, increasing the …

cn (code pays fourni par la source)

Cross-phase PET image translation in prostate cancer via conditional diffusion models

Xing Fu, Yuxi Jin, Qiaochu Chen, Haizhou Liu et autres

Prostate cancer represents a major oncologic burden in males. While delayed-phase PSMA PET/CT enhances lesion detection over early imaging, its clinical utility is hampered by prolonged acquisition times and increased radiation exposure from the additional CT. To mitigate these limitations, we introduce …

cn (code pays fourni par la source)

A text-information-controlled diffusion model for multimodal whole-body PET synthesis from MRI

Yi‐Zhou Jiang, Yuxi Jin, Qiaochu Chen, Haizhou Liu et autres

Positron Emission Tomography (PET) is crucial for staging and monitoring systemic diseases, but its application is often constrained by high costs, radiation exposure, and limited availability. Synthesizing PET images from routinely acquired Magnetic Resonance Imaging (MRI) presents a promising alternative. This study …

cn (code pays fourni par la source)

SceneFlow: Synthesizing indoor scenes via geometry-enhanced flow matching

Wenming Wu, Zixiang Chen, Gaofeng Zhang, Liping Zheng

cn (code pays fourni par la source)

IL-18 drives the Bhlhe40-mediated pathogenic Th17 cell response and exacerbates autoimmune disease progression

Yuan Yan Tang, Yue Zhao, Zixiang Chen, Xiaofei Shi et autres

hk, cn, fr (code pays fourni par la source)