Qun Sun
Biographic Data
| ID | 6174867 |
|---|---|
| NAME | Qun Sun |
| GIVEN NAMES | Qun |
| FAMILY NAME | Sun |
| SIGNATURE | SUN Q |
| AFFILIATIONS | Beijing Chaoyang Emergency Medical Center |
| ORCID | 0000-0002-4372-8865 |
| VERIFIED | Yes |
| TOTAL WORKS | 14 |
| TOTAL CITATIONS | 0 |
| AUTHOR COUNT | 14 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2021 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 0 |
Direct medical costs and length of stay associated with postoperative systemic infectious complications after gynecologic surgery
Background and aim To quantify the independent impact of postoperative systemic infectious complications (PSIC) on direct medical costs and length of stay (LOS) for patients undergoing gynecologic surgery. Methods This was a retrospective case–control study conducted at a large tertiary healthcare facility in southwestern China. The participants included patients who underwent gynecologic surgery between January 2022 and December 2024. The study …
Uropathogen profiles and their antimicrobial resistance patterns in patients
Background Urinary tract infection (UTI) is the most common infection requiring empiric antibiotic treatment. Due to the increased antibiotic resistance of uropathogens and their regional variation, monitoring pathogen distribution and antimicrobial susceptibility is important to ensure effective antibiotic therapy. This retrospective study analyzed the 3-year-long uropathogen profiles and their resistance from a single tertiary general hospital …
Incremental Updating of 3D Indoor Data Considering Topological Linkages
Indoor location-based services and applications are heavily dependent on the currentness of indoor data. Therefore, it is crucial to update indoor spatial information promptly and efficiently to ensure its relevance and reliability. Maintaining the topological consistency of geometric objects presents a significant challenge in updating indoor data. Consequently, this paper introduces an incremental updating method for 3D indoor data that conside…
Construction of 3D Indoor Topological Models Based on Improved Face Sorting
Indoor location-based services and applications need to obtain information about the indoor spatial layouts and topological relationships of indoor spaces. The 3D city modeling data standard CityGML describes the indoor geometric and semantic information of buildings, but the surfaces composing a volume are discrete, leading to invalid volumes. Moreover, the topological adjacency relationships of adjacent indoor spaces have not yet been described…
Knowledge, attitudes, and practices regarding preconception or early pregnancy single-gene genetic disease screening among reproductive-aged individuals
Not applicable
Prevalence of prediabetes and risk of CVD mortality in individuals with prediabetes alone or plus hypertension in Northeast China
The prevalence of prediabetes remains high in northeast China, and the CVD mortality was elevated significantly in prediabetes coexistent with hypertension. Considering the high percentage and low control rate of hypertension in prediabetes, strategies focused on HbA1c screening, FPG lowering and blood pressure management should be emphasized in northeast China
Common carotid artery diameter and the risk of cardiovascular disease mortality
Our study indicates the possible incremental value of CCA diameter in optimizing the risk stratification of cardiovascular disease and provides essential insights into reducing the burden of cardiovascular disease
A Contour Line Group Simplification Method Based on Classified Terrain Features
Contour line group simplification methods can effectively preserve terrain features during map making and producing. This process involves two main steps, namely terrain feature line extraction and contour bend selection. The terrain feature line extraction includes two steps, that is, terrain feature point extraction and classification, and terrain feature line connection. However, to date, many similar studies have not considered the hierarchy …
Leveraging Deep Convolutional Neural Network for Point Symbol Recognition in Scanned Topographic Maps
Point symbols on a scanned topographic map (STM) provide crucial geographic information. However, point symbol recognition entails high complexity and uncertainty owing to the stickiness of map elements and singularity of symbol structures. Therefore, extracting point symbols from STMs is challenging. Currently, point symbol recognition is performed primarily through pattern recognition methods that have low accuracy and efficiency. To address th…
Progressive Collapse of Dual-Line Rivers Based on River Segmentation Considering Cartographic Generalization Rules
Collapse is a common cartographic generalization operation in multi-scale representation and cascade updating of vector spatial data. During transformation from large- to small-scale, the dual-line river shows progressive collapse from narrow river segment to line. The demand for vector spatial data with various scales is increasing; however, research on the progressive collapse of dual-line rivers is lacking. Therefore, we proposed a progressive…
A Multi-Scale Residential Areas Matching Method Considering Spatial Neighborhood Features
Residential areas is one of the basic geographical elements on the map and an important content of the map representation. Multi-scale residential areas matching refers to the process of identifying and associating entities with the same name in different data sources, which can be widely used in map compilation, data fusion, change detection and update. A matching method considering spatial neighborhood features is proposed to solve the complex …
Road Network Generalization Method Constrained by Residential Areas
Residential areas and road networks have a strong geographical correlation. The development of a single geographical feature could destroy the geographical correlation. It is necessary to establish collaborative generalization models suitable for multiple features. However, existing road network generalization methods for mapping purposes do not fully consider residential areas. Compared with road networks, residential areas have a higher priorit…
How to Evaluate Investment Efficiency of Environmental Pollution Control
Clarifying the efficiency of investment in environmental pollution control is conducive to better control of environmental pollution. Based on panel data of 30 provinces and cities in China from 2008 to 2017, this study combines the three-stage super-efficient SBM-DEA model and the Global-Malmquist-Luenberger index to measure the efficiency of investment in environmental pollution control in China and analyze regional differences. The results sho…
Status and disparities of diabetes among urban and rural residents aged 40 years and older
OBJECTIVES: To evaluate the up-to-date epidemiology of diabetes in northeast China. METHODS: The cross-sectional study was conducted between September 2017 and March 2019 using a multistage, stratified and cluster random sampling method. 18 796 participants (28.9% urban and 71.1% rural) aged ≥40 years were enrolled. Diabetes and pre-diabetes were diagnosed according to the history, fasting plasma glucose (FPG) and glycosylated haemoglobin A1c (Hb…
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Status and disparities of diabetes among urban and rural residents aged 40 years and older
OBJECTIVES: To evaluate the up-to-date epidemiology of diabetes in northeast China. METHODS: The cross-sectional study was conducted between September 2017 and March 2019 using a multistage, stratified and cluster random sampling method. 18 796 participants (28.9% urban and 71.1% rural) aged ≥40 years were enrolled. Diabetes and pre-diabetes were diagnosed according to the history, fasting plasma glucose (FPG) and glycosylated haemoglobin A1c (Hb…
Progressive Collapse of Dual-Line Rivers Based on River Segmentation Considering Cartographic Generalization Rules
Collapse is a common cartographic generalization operation in multi-scale representation and cascade updating of vector spatial data. During transformation from large- to small-scale, the dual-line river shows progressive collapse from narrow river segment to line. The demand for vector spatial data with various scales is increasing; however, research on the progressive collapse of dual-line rivers is lacking. Therefore, we proposed a progressive…
A Multi-Scale Residential Areas Matching Method Considering Spatial Neighborhood Features
Residential areas is one of the basic geographical elements on the map and an important content of the map representation. Multi-scale residential areas matching refers to the process of identifying and associating entities with the same name in different data sources, which can be widely used in map compilation, data fusion, change detection and update. A matching method considering spatial neighborhood features is proposed to solve the complex …
Road Network Generalization Method Constrained by Residential Areas
Residential areas and road networks have a strong geographical correlation. The development of a single geographical feature could destroy the geographical correlation. It is necessary to establish collaborative generalization models suitable for multiple features. However, existing road network generalization methods for mapping purposes do not fully consider residential areas. Compared with road networks, residential areas have a higher priorit…
How to Evaluate Investment Efficiency of Environmental Pollution Control
Clarifying the efficiency of investment in environmental pollution control is conducive to better control of environmental pollution. Based on panel data of 30 provinces and cities in China from 2008 to 2017, this study combines the three-stage super-efficient SBM-DEA model and the Global-Malmquist-Luenberger index to measure the efficiency of investment in environmental pollution control in China and analyze regional differences. The results sho…
A Contour Line Group Simplification Method Based on Classified Terrain Features
Contour line group simplification methods can effectively preserve terrain features during map making and producing. This process involves two main steps, namely terrain feature line extraction and contour bend selection. The terrain feature line extraction includes two steps, that is, terrain feature point extraction and classification, and terrain feature line connection. However, to date, many similar studies have not considered the hierarchy …
Leveraging Deep Convolutional Neural Network for Point Symbol Recognition in Scanned Topographic Maps
Point symbols on a scanned topographic map (STM) provide crucial geographic information. However, point symbol recognition entails high complexity and uncertainty owing to the stickiness of map elements and singularity of symbol structures. Therefore, extracting point symbols from STMs is challenging. Currently, point symbol recognition is performed primarily through pattern recognition methods that have low accuracy and efficiency. To address th…
Prevalence of prediabetes and risk of CVD mortality in individuals with prediabetes alone or plus hypertension in Northeast China
The prevalence of prediabetes remains high in northeast China, and the CVD mortality was elevated significantly in prediabetes coexistent with hypertension. Considering the high percentage and low control rate of hypertension in prediabetes, strategies focused on HbA1c screening, FPG lowering and blood pressure management should be emphasized in northeast China
Common carotid artery diameter and the risk of cardiovascular disease mortality
Our study indicates the possible incremental value of CCA diameter in optimizing the risk stratification of cardiovascular disease and provides essential insights into reducing the burden of cardiovascular disease
Uropathogen profiles and their antimicrobial resistance patterns in patients
Background Urinary tract infection (UTI) is the most common infection requiring empiric antibiotic treatment. Due to the increased antibiotic resistance of uropathogens and their regional variation, monitoring pathogen distribution and antimicrobial susceptibility is important to ensure effective antibiotic therapy. This retrospective study analyzed the 3-year-long uropathogen profiles and their resistance from a single tertiary general hospital …
Incremental Updating of 3D Indoor Data Considering Topological Linkages
Indoor location-based services and applications are heavily dependent on the currentness of indoor data. Therefore, it is crucial to update indoor spatial information promptly and efficiently to ensure its relevance and reliability. Maintaining the topological consistency of geometric objects presents a significant challenge in updating indoor data. Consequently, this paper introduces an incremental updating method for 3D indoor data that conside…
Construction of 3D Indoor Topological Models Based on Improved Face Sorting
Indoor location-based services and applications need to obtain information about the indoor spatial layouts and topological relationships of indoor spaces. The 3D city modeling data standard CityGML describes the indoor geometric and semantic information of buildings, but the surfaces composing a volume are discrete, leading to invalid volumes. Moreover, the topological adjacency relationships of adjacent indoor spaces have not yet been described…
Knowledge, attitudes, and practices regarding preconception or early pregnancy single-gene genetic disease screening among reproductive-aged individuals
Not applicable
Direct medical costs and length of stay associated with postoperative systemic infectious complications after gynecologic surgery
Background and aim To quantify the independent impact of postoperative systemic infectious complications (PSIC) on direct medical costs and length of stay (LOS) for patients undergoing gynecologic surgery. Methods This was a retrospective case–control study conducted at a large tertiary healthcare facility in southwestern China. The participants included patients who underwent gynecologic surgery between January 2022 and December 2024. The study …
Computer Science (9 works) · Mathematics (7 works) · Artificial Intelligence (6 works) · Geography (6 works) · Automated Road and Building Extraction (5 works) · Geographic Information Systems Studies (5 works) · Internal Medicine (5 works) · Medicine (5 works) · Cartography (4 works) · Environmental health (4 works)