Yunfei Zhang
Biographic Data
| ID | 4508259 |
|---|---|
| NAME | Yunfei Zhang |
| GIVEN NAMES | Yunfei |
| FAMILY NAME | Zhang |
| SIGNATURE | ZHANG Y |
| AFFILIATIONS | Changsha University of Science and Technology |
| ORCID | 0000-0002-8123-7805 |
| VERIFIED | Yes |
| TOTAL WORKS | 15 |
| TOTAL CITATIONS | 4 |
| AUTHOR COUNT | 15 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2019 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 1 |
Uncovering regional freight travel patterns from GNSS trajectories
Exploring pupils’ attitude toward technology
Worldview Structure of Traditional Chinese Culture
The formation of traditional Chinese culture is a unique phenomenon of civilizational synthesis, based on the inseparable unity of cosmological ideas, moral and ethical norms, and political and ritual practices. The central matrix that defines the axiological core of Chinese civilization is the philosophical category of “Yin – Yang” (阴阳), which combines dualism and the dynamic balance of opposing principles. This work aims to reconstruct the worl…
Trajectory-Driven Road Network Extraction via Coupled Multi-Level Grid Semantics
Road network extraction and updating are crucial for urban development, map updating, and mobility applications. Existing trajectory-based methods often underutilize grid-level semantic information and neighborhood context, thereby limiting their robustness to noisy, heterogeneous, and cross-city trajectory conditions. This study proposes a supervised framework for trajectory-driven road network extraction by coupling intra-grid movement semantic…
In the Name of Love
Solving the Traveling Salesman Problem Using the Idinfo Algorithm
The Traveling Salesman Problem (TSP) is a classical discrete combinatorial optimization problem that is widely applied in various domains, including robotics, transportation, networking, etc. Although existing studies have provided extensive discussions of the TSP, the issues of improving convergence and optimization capability are still open. In this study, we aim to address this issue by proposing a new algorithm named IDINFO (Improved version …
Study on Accessibility and Equity of Park Green Spaces in Zhengzhou
Urban park green space (UPGS) is a key component of urban green infrastructure, yet it faces multiple contradictions, such as insufficient quantity and uneven distribution. Taking Zhengzhou City as a case study, this research explored the impacts of temporal thresholds and the modifiable areal unit problem (MAUP) on UPGS accessibility and equity. An improved multi-modal Gaussian two-step floating catchment area (G2SFCA) method was employed to mea…
Quantitative Estimation and Analysis of Spatiotemporal Delay Effects in Expressway Traffic Accidents
Expressway traffic accidents often result in severe congestion, with their unpredictable nature complicating timely and effective response measures. This paper presents a comprehensive method for accurately estimating and analyzing the spatiotemporal delay effects of expressway accidents through the integration of multi-source geographic data. The innovation lies in utilizing real-world vehicle trajectory data, combined with a Traffic Performance…
Detecting Road Intersections from Crowdsourced Trajectory Data Based on Improved Yolov5 Model
In recent years, the rapid development of autonomous driving and intelligent driver assistance has brought about urgent demands on high-precision road maps. However, traditional road map production methods mainly rely on professional survey technologies, such as remote sensing and mobile mapping, which suffer from high costs, object occlusions, and long updating cycles. In the era of ubiquitous mapping, crowdsourced trajectory data offer a new an…
Exploring Spatiotemporal Patterns of Expressway Traffic Accidents Based on Density Clustering and Bayesian Network
Exploring spatiotemporal patterns of traffic accidents from historic crash databases is one essential prerequisite for road safety management and traffic risk prevention. Presently, with the emergence of GIS and data mining technologies, numerous geospatial analysis methods have been successfully adopted for traffic accident analysis. As characterized by high driving speeds, diverse vehicle types, and isolated traffic environments, expressways ar…
Association of Use of Tourniquets During Total Knee Arthroplasty in the Elderly Patients With Post-operative Pain and Return to Function
Objective: During total knee arthroplasty (TKA), tourniquet may negatively impact post-operative functional recovery. This study aimed at investigating the effects of tourniquet on pain and return to function. Methods: Pubmed, Embase, and Cochrane Library were comprehensively searched for randomized controlled trials (RCTs) published up to February 15th, 2020. Search terms included; total knee arthroplasty, tourniquet, and randomized controlled t…
Prevalence of thinness, overweight and obesity among Tibetan adolescents aged 12–17 years
Objective: To estimate the prevalence of thinness, overweight and obesity among Tibetan adolescents aged 12–17 years. Design: Cross-sectional survey. Setting: Shigatse City of Tibet municipality, with an average altitude of more than 4000 m. Participants: Study participants included 2642 adolescents aged 12–17 years selected from six schools using a convenient cluster sampling method. Results: The prevalence of thinness/overweight/obesity among T…
A Preliminary Study of Ecological Ethics
We should build ecological or environmental ethics as an independent discipline. Firstly, it is a discipline with ecological or environmental morality as the research object. Ecological morality is the behavior norm and evaluation system of communication between humankind and nature. Marxist ethics should pay full attention to and strengthen the study of ecological morality. Secondly, it is an interdisciplinary science between ecology and ethics,…
A Hybrid Method to Incrementally Extract Road Networks Using Spatio-Temporal Trajectory Data
With the rapid development of urban traffic, accurate and up-to-date road maps are in crucial demand for daily human life and urban traffic control. Recently, with the emergence of crowdsourced mapping, a surge in academic attention has been paid to generating road networks from spatio-temporal trajectory data. However, most existing methods do not explore changing road patterns contained in multi-temporal trajectory data and it is still difficul…
On the Historical Position of Ecological Civilization
Ecological civilization is not a new form of civilization that will replace the current industrial civilization, but a basic structure or factor running through all forms of civilization (from hunting and fishing society to agricultural, industrial, and then information civilizations). Information civilization is a new form of civilization following industrial civilization. Only after a new ecological civilization has been achieved will it be pos…
On the Historical Position of Ecological Civilization
Ecological civilization is not a new form of civilization that will replace the current industrial civilization, but a basic structure or factor running through all forms of civilization (from hunting and fishing society to agricultural, industrial, and then information civilizations). Information civilization is a new form of civilization following industrial civilization. Only after a new ecological civilization has been achieved will it be pos…
A Preliminary Study of Ecological Ethics
We should build ecological or environmental ethics as an independent discipline. Firstly, it is a discipline with ecological or environmental morality as the research object. Ecological morality is the behavior norm and evaluation system of communication between humankind and nature. Marxist ethics should pay full attention to and strengthen the study of ecological morality. Secondly, it is an interdisciplinary science between ecology and ethics,…
On the Historical Position of Ecological Civilization
Ecological civilization is not a new form of civilization that will replace the current industrial civilization, but a basic structure or factor running through all forms of civilization (from hunting and fishing society to agricultural, industrial, and then information civilizations). Information civilization is a new form of civilization following industrial civilization. Only after a new ecological civilization has been achieved will it be pos…
A Hybrid Method to Incrementally Extract Road Networks Using Spatio-Temporal Trajectory Data
With the rapid development of urban traffic, accurate and up-to-date road maps are in crucial demand for daily human life and urban traffic control. Recently, with the emergence of crowdsourced mapping, a surge in academic attention has been paid to generating road networks from spatio-temporal trajectory data. However, most existing methods do not explore changing road patterns contained in multi-temporal trajectory data and it is still difficul…
Prevalence of thinness, overweight and obesity among Tibetan adolescents aged 12–17 years
Objective: To estimate the prevalence of thinness, overweight and obesity among Tibetan adolescents aged 12–17 years. Design: Cross-sectional survey. Setting: Shigatse City of Tibet municipality, with an average altitude of more than 4000 m. Participants: Study participants included 2642 adolescents aged 12–17 years selected from six schools using a convenient cluster sampling method. Results: The prevalence of thinness/overweight/obesity among T…
A Preliminary Study of Ecological Ethics
We should build ecological or environmental ethics as an independent discipline. Firstly, it is a discipline with ecological or environmental morality as the research object. Ecological morality is the behavior norm and evaluation system of communication between humankind and nature. Marxist ethics should pay full attention to and strengthen the study of ecological morality. Secondly, it is an interdisciplinary science between ecology and ethics,…
Association of Use of Tourniquets During Total Knee Arthroplasty in the Elderly Patients With Post-operative Pain and Return to Function
Objective: During total knee arthroplasty (TKA), tourniquet may negatively impact post-operative functional recovery. This study aimed at investigating the effects of tourniquet on pain and return to function. Methods: Pubmed, Embase, and Cochrane Library were comprehensively searched for randomized controlled trials (RCTs) published up to February 15th, 2020. Search terms included; total knee arthroplasty, tourniquet, and randomized controlled t…
Exploring Spatiotemporal Patterns of Expressway Traffic Accidents Based on Density Clustering and Bayesian Network
Exploring spatiotemporal patterns of traffic accidents from historic crash databases is one essential prerequisite for road safety management and traffic risk prevention. Presently, with the emergence of GIS and data mining technologies, numerous geospatial analysis methods have been successfully adopted for traffic accident analysis. As characterized by high driving speeds, diverse vehicle types, and isolated traffic environments, expressways ar…
Quantitative Estimation and Analysis of Spatiotemporal Delay Effects in Expressway Traffic Accidents
Expressway traffic accidents often result in severe congestion, with their unpredictable nature complicating timely and effective response measures. This paper presents a comprehensive method for accurately estimating and analyzing the spatiotemporal delay effects of expressway accidents through the integration of multi-source geographic data. The innovation lies in utilizing real-world vehicle trajectory data, combined with a Traffic Performance…
Detecting Road Intersections from Crowdsourced Trajectory Data Based on Improved Yolov5 Model
In recent years, the rapid development of autonomous driving and intelligent driver assistance has brought about urgent demands on high-precision road maps. However, traditional road map production methods mainly rely on professional survey technologies, such as remote sensing and mobile mapping, which suffer from high costs, object occlusions, and long updating cycles. In the era of ubiquitous mapping, crowdsourced trajectory data offer a new an…
Solving the Traveling Salesman Problem Using the Idinfo Algorithm
The Traveling Salesman Problem (TSP) is a classical discrete combinatorial optimization problem that is widely applied in various domains, including robotics, transportation, networking, etc. Although existing studies have provided extensive discussions of the TSP, the issues of improving convergence and optimization capability are still open. In this study, we aim to address this issue by proposing a new algorithm named IDINFO (Improved version …
Study on Accessibility and Equity of Park Green Spaces in Zhengzhou
Urban park green space (UPGS) is a key component of urban green infrastructure, yet it faces multiple contradictions, such as insufficient quantity and uneven distribution. Taking Zhengzhou City as a case study, this research explored the impacts of temporal thresholds and the modifiable areal unit problem (MAUP) on UPGS accessibility and equity. An improved multi-modal Gaussian two-step floating catchment area (G2SFCA) method was employed to mea…
Uncovering regional freight travel patterns from GNSS trajectories
Exploring pupils’ attitude toward technology
Worldview Structure of Traditional Chinese Culture
The formation of traditional Chinese culture is a unique phenomenon of civilizational synthesis, based on the inseparable unity of cosmological ideas, moral and ethical norms, and political and ritual practices. The central matrix that defines the axiological core of Chinese civilization is the philosophical category of “Yin – Yang” (阴阳), which combines dualism and the dynamic balance of opposing principles. This work aims to reconstruct the worl…
Trajectory-Driven Road Network Extraction via Coupled Multi-Level Grid Semantics
Road network extraction and updating are crucial for urban development, map updating, and mobility applications. Existing trajectory-based methods often underutilize grid-level semantic information and neighborhood context, thereby limiting their robustness to noisy, heterogeneous, and cross-city trajectory conditions. This study proposes a supervised framework for trajectory-driven road network extraction by coupling intra-grid movement semantic…
In the Name of Love
Computer Science (5 works) · Artificial Intelligence (3 works) · Automated Road and Building Extraction (3 works) · China (3 works) · Data mining (3 works) · Engineering (3 works) · Politics (3 works) · Traffic Prediction and Management Techniques (3 works) · Transport engineering (3 works) · Civilization (2 works)