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A fast forward computational method for nuclear measurement using volumetric detection constraints

Nuclear Science and Techniques 2024年第2期35卷 47-63页

作者： Qiong Zhang lin-Lv lin University of Electronic Science and Technology of china Chengdu 610000China

Owing to the complex lithology of unconventional reservoirs,field interpreters usually need to provide a basis for interpretation using logging simulation *** the various detection tools that use nuclear sources,the detector response can reflect various types of information of the *** Monte Carlo method is one of the primary methods used to obtain nuclear detection responses in complex ***,this requires a computational process with extensive random sampling,consumes considerable resources,and does not provide real-time response ***,a novel fast forward computational method(FFCM)for nuclear measurement that uses volumetric detection constraints to rapidly calculate the detector response in various complex environments is ***,the data library required for the FFCM is built by collecting the detection volume,detector counts,and flux sensitivity functions through a Monte Carlo ***,based on perturbation theory and the Rytov approximation,a model for the detector response is derived using the flux sensitivity function method and a one-group diffusion *** environmental perturbation is constrained to optimize the model according to the tool structure and the impact of the formation and borehole within the effective detection ***,the method is applied to a neutron porosity tool for *** various complex simulation environments,the maximum relative error between the calculated porosity results of Monte Carlo and FFCM was 6.80%,with a rootmean-square error of 0.62 *** field well applications,the formation porosity model obtained using FFCM was in good agreement with the model obtained by interpreters,which demonstrates the validity and accuracy of the proposed method.

关键词： Nuclear measurement Fast forward computation Volumetric constraints

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Rapid and sensitive detection of urinary KIM-1 using fully printed photonic crystal microarrays

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Nano Research 2024年第5期17卷 4329-4337页

作者： Yang Liu Xuwei He Zewei Lian Qian Guo Jimei chi Xiaoxue lin Liyue Zhang Zheng Liu Yingyuan Liu Meng Su Keyu Wang Qiangguo Ao Qingli Cheng Department of Nephrology The Second Medical Center of Chinese PLA General HospitalNational Clinical Research Centre for Geriatric DiseasesBeijing 100853China chinese PLA Medical School Beijing 100853China Key Laboratory of Green Printing CAS Research/Education Center for Excellence in Molecular SciencesBeijing Engineering Research Center of Nanomaterials for Green Printing TechnologyBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of Sciences(ICCAS)Beijing 100190China Department of Rheumatology and Immunology Peking University International HospitalBeijing 102206China Department of Clinical Laboratory The Second Medical Center of Chinese PLA General HospitalNational Clinical Research Centre for Geriatric DiseasesBeijing 100853China

Urinary kidney injury molecule 1(uKIM-1)serves as a reliable marker for the early diagnosis of acute kidney injury(AKI).The rapid and facile detection of changes in uKIM-1 is essential for early AKI diagnosis,ultimately improving the prognosis of *** this study,we developed a fully printed photonic crystal-integrated microarray with photonic crystal-enhanced fluorescence properties,which can detect uKIM-1 levels at the *** confirmed its efficacy in the early diagnosis of AKI using clinical urine *** quantitative detection of uKIM-1 was achieved within 10 *** lowest limit of detection is 8.75 pg·mL^(-1) with an accuracy of 94.2%.The diagnostic efficacy was validated using 86 clinical urine samples,highlighting the high sensitivity and stability of the photonic crystal ***,a facile and reliable immunoassay was designed and prepared for the rapid quantitative detection of uKIM-1,which is crucial for the early identification and convenient detection of AKI in hospital or community ***,convenient,cost-effective,and long-term monitoring of changes in uKIM-1 levels can assist clinicians in making timely adjustments to treatment regimens,preventing the transition from AKI to chronic kidney disease(CKD),improving the quality of life of patients with AKI,and reducing healthcare *** highlights the advantages of utilizing urine samples as a noninvasive and easily accessible medium for early detection and monitoring of kidney-related conditions.

关键词： photonic crystal point-of-care testing urine kidney injury molecule-1(KIM-1) acute kidney injury

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Risk of cardiovascular death in patients with hepatocellular carcinoma based on the Fine-Gray model

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World Journal of Gastrointestinal Oncology 2024年第3期16卷 844-856页

作者： Yu-Liang Zhang Zi-Rong Liu Zhi Liu Yi Bai Hao chi Da-Peng Chen Ya-Min Zhang Zi-lin Cui First Central Clinical College Tianjin Medical UniversityTianjin 300070China Department of Hepatobiliary Surgery Tianjin First Central HospitalSchool of MedicineNankai UniversityTianjin 300192China

BACKGROUND Hepatocellular carcinoma(HCC)is one of the most common types of cancers worldwide,ranking fifth among men and seventh among women,resulting in more than 7 million deaths *** the development of medical tech-nology,the 5-year survival rate of HCC patients can be increased to 70%.How-ever,HCC patients are often at increased risk of cardiovascular disease(CVD)death due to exposure to potentially cardiotoxic treatments compared with non-HCC ***,CVD and cancer have become major disease burdens ***,further research is needed to lessen the risk of CVD death in HCC patient *** This study was conducted on the basis of the Surveillance,Epidemiology,and End Results database and included HCC patients with a diagnosis period from 2010 to *** independent risk factors were identified using the Fine-Gray model.A nomograph was constructed to predict the CVM in HCC *** nomograph performance was measured using Harrell’s concordance index(C-index),calibration curve,receiver operating characteristic(ROC)curve,and area under the ROC curve(AUC)***,the net benefit was estimated via decision curve analysis(DCA).RESULTS The study included 21545 HCC patients,of whom 619 died of ***(5 cm:2.090(1.543-2.830),P<0.001],surgery(no)[0.376(0.297-0.476),P<0.001],and chemotherapy(none/unknown)[0.578(0.472-0.709),P<0.001]were independent risk factors for CVD death in HCC *** discrimination and calibration of the nomograph were *** C-index values for the training and validation sets were 0.736 and 0.665,*** AUC values of the ROC curves at 2,4,and 6 years were 0.702,0.725,0.740 in the training set and 0.697,0.710,0.744 in the validation set,*** calibration curves showed that the

关键词： Hepatocellular carcinoma Cardiovascular disease deaths Fine-Gray model Risk factor Nomograph Predict

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Population size estimates based on GPS telemetry

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Zoological Research 2024年第1期45卷 36-38页

作者： Yu-Xuan Fan Pu-Zheng Xie chi Ma Ting Chen Xiao Ye Hua-lin Xu Qiong Yang Peng-Fei Fan School of Life Sciences Sun Yat-sen UniversityGuangzhouGuangdong 510275China College of Agriculture and Biological Sciences DaliYunnan 671003China Neilingding-Futian National Nature Reserve of Guangdong ShenzhenGuangdong 518040China

DEAR EDITOR,Accurate estimation of population size is a crucial issue in wildlife population ecology and *** Global Positioning System(GPS)collars are well recognized as an effective method for monitoring wildlife behavior,their application in direct wildlife population size estimation remains *** this study,GPS telemetry was employed to survey a rhesus macaque(Macaca mulatta)population on Neilingding Island in Guangdong,*** May 2021 to April 2022,32 macaques across nine groups were fitted with GPS collars,producing a dataset of 109739 location *** data from all tracked individuals revealed the annual home ranges of the nine groups.

关键词： china Island size

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Enhancing Safety in Autonomous Vehicle Navigation:An Optimized Path Planning Approach Leveraging Model Predictive Control

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Computers, Materials & Continua 2024年第9期80卷 3555-3572页

作者： Shih-lin lin Bo-Chen lin Graduate Institute of Vehicle Engineering National Changhua University of EducationChanghua50007TaiwanChina

This paper explores the application of Model Predictive Control(MPC)to enhance safety and efficiency in autonomous vehicle(AV)navigation through optimized path *** evolution of AV technology has progressed rapidly,moving from basic driver-assistance systems(Level 1)to fully autonomous capabilities(Level 5).Central to this advancement are two key functionalities:Lane-Change Maneuvers(LCM)and Adaptive Cruise Control(ACC).In this study,a detailed simulation environment is created to replicate the road network between Nantun andWuri on National Freeway No.1 in *** MPC controller is deployed to optimize vehicle trajectories,ensuring safe and efficient *** onboard sensors,including vehicle cameras and millimeterwave radar,are used to detect and respond to dynamic changes in the surrounding environment,enabling real-time decision-making for LCM and *** simulation resultshighlight the superiority of the MPC-based approach in maintaining safe distances,executing controlled lane changes,and optimizing fuel ***,the MPC controller effectively manages collision avoidance,reduces travel time,and contributes to smoother traffic flow compared to traditional path planning *** findings underscore the potential of MPC to enhance the reliability and safety of autonomous driving in complex traffic *** research will focus on validating these results through real-world testing,addressing computational challenges for real-time implementation,and exploring the adaptability of MPC under various environmental *** study provides a significant step towards achieving safer and more efficient autonomous vehicle navigation,paving the way for broader adoption of MPC in AV systems.

关键词： Autonomous driving model predictive control(MPC) lane change maneuver(LCM) adaptive cruise control(ACC)

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Recanalization of anastomotic occlusion following rectal cancer surgery using a rendezvous endoscopic technique with transillumination:A case report

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World Journal of Gastroenterology 2024年第37期30卷 4149-4155页

作者： Jun chi Guang-Yu Luo Hong-Bo Shan Jun-Zhong lin Xiao-Jun Wu Jian-Jun Li Department of Endoscopy Sun Yat-Sen University Cancer CenterGuangzhou 510060Guangdong ProvinceChina State Key Laboratory of Oncology in South china Guangzhou 510060Guangdong ProvinceChina Guangdong Provincial Clinical Research Center for Cancer Guangzhou 510060Guangdong ProvinceChina Department of Colorectal Surgery Sun Yat-Sen University Cancer CenterGuangzhou 510060Guangdong ProvinceChina

BACKGROUND Colorectal anastomotic occlusion is a serious complication of colorectal cancer *** several treatment strategies have been proposed,the mana-gement of anastomotic occlusion remains *** this report,we present a case of anastomotic occlusion recanalization performed using a novel technique involving two endoscopes,one for radial incision and the other serving as a guide *** novel technique offers significant advantages in terms of operational feasibility,reduced invasiveness,rapid recovery,and shortened hospital *** SUMMARY A 37-year-old man underwent low anterior resection and prophylactic double-lumen ileostomy for rectal cancer in June,*** months later,complete anastomotic occlusion was observed on ***,we developed a novel atresia recanalization *** endoscopes were placed,one through the colonic anastomosis and the other through the anus.A radial incision was successfully made from the colonic side,guided by the light of the endoscope from the anal *** recanal-ization was performed within 20 *** weeks after recanalization,colonoscopy revealed that the diameter of the colorectal anastomosis was approximately 16 mm and the patient therefore underwent stoma reversal in *** the follow-up period of approximately one year,the patient remained well and no stenosis or obstruction symptoms were *** Endoscopic atresia recanalization of colorectal anastomotic occlusion assisted by an opposing light source is safe and effective.

关键词： Endoscopy Atresia recanalization Anastomotic occlusion Light source Case report

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The Existence of a Meridional Curve in Closed Incompressible Surfaces in Fully Alternating link Complements

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chinese Annals of Mathematics,Series B 2024年第1期45卷 73-80页

作者： Wei lin School of Mathematical Sciences Dalian University of TechnologyDalian 116024LiaoningChina

Menasco showed that a closed incompressible surface in the complement of a non-split prime alternating link in S^(3) contains a circle isotopic in the link complement to a meridian of the *** on this result,he was able to argue the hyperbolicity of non-split prime alternating links in *** et *** that if F■S×I\L is an essential torus,then F contains a circle which is isotopic in S×I\L to a meridian of *** author generalizes his result as follows:Let S be a closed orientable surface,L be a fully alternating link in S×I\If F ■ S×I\L is a closed essential surface,then F contains a circle which is isotopic in S×I\L to a meridian of L.

关键词： Fully alternating Incompressible surfaces Meridionally incompressible

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XMe - Xiamen Molecular Electronics Code:An Intelligent and Open-Source Data Analysis Tool for Single-Molecule Conductance Measurements

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chinese Journal of Chemistry 2024年第3期42卷 317-329页

作者： Zhichao Pan Gang Dong chi Shang Ruihao Li Tengyang Gao Luchun lin Huicong Duan Xiaohui Li Jie Bai Yilin Lai Wenfeng Wu Jia Shi Junyang Liu Wenjing Hong State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering & Institute of Artificial IntelligenceXiamen UniversityXiamenFujian361005 China School of Artificial Intelligence Guilin University of Electronic TechnologyGuilinGuangxi541004 China

Charge transport characterization of single-molecule junctions is essential for the fundamental research of single-molecule physical chemistry and the development towards single-molecule electronic devices and circuits. Among the single-molecule conductance characterization techniques,the single-molecule break junction technique is widely used in tens of worldwide research laboratories which can generate a large amount of experimental data from thousands of individual measurement cycles. However,data interpretation is a challenging task for researchers with different research backgrounds,and the different data analysis approaches sometimes lead to the misunderstanding of the measurement data and even reproducibility issues of the measurement. It is thus a necessity to develop a user-friendly all-in-one data analysis tool that automatizes the basic data analysis in a standard and widely accepted way. In this work,we present the XMe Code (Xiamen Molecular Electronics Code),an intelligent all-in-one data analysis tool for the comprehensive analysis of single-molecule break junction data. XMe code provides end-to-end data analysis that takes in the original experimental data and returns electronic characteristics and even charge transport mechanisms. We believe that XMe Code will promote the transparency of the data analysis in single-molecule electronics and the collaborations among scientists with different research backgrounds.

关键词： Molecular electronics Single-molecule studies Break junction Data science Software

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Adaptive admittance tracking control for interactive robot with prescribed performance

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Journal of Systems Engineering and Electronics 2024年第2期35卷 444-450页

作者： MENG Qingrui lin Yan School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100190China College of Electrical Engineering and Automation Shandong University of Science and TechnologyQingdao 266590China

An adaptive control approach is presented in this paper for tracking desired trajectories in interactive manipulators. The controller design incorporates prescribed performance functions (PPFs) to improve dynamic performance. Notably, the performance of the output error is confined in an envelope characterized by exponential convergence, leading to convergence to zero. This feature ensures a prompt response from admittance control and establishes a reliable safety framework for interactions. Simulation results provide practical insights,demonstrating the viability of the control scheme proposed in this paper.

关键词： prescribed performance admittance control adaptive control robots

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No Reference Image Sharpness Assessment Based on Global Color Difference Variation

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chinese Journal of Electronics 2024年第1期33卷 293-302页

作者： Chenyang SHI Yandan lin School of Artificial Intelligence Anhui Polytechnic University School of Mechanical Engineering Anhui Polytechnic University Department of Light Sources and Illuminating Engineering Fudan University Academy for Engineering & Technology Fudan University

Image quality assessment(IQA) model is designed to measure the image quality in consistent with subjective ratings by computational models. In this research, a valid no reference IQA(NR-IQA) model for color image sharpness assessment is proposed based on local color difference map in a color space. In the proposed model, the absolute color difference variation and relative color difference variation are combined to evaluate sharpness in YIQ color space(a color coordinate system for the development of the United States color television system). The difference between sharpest and blurriest spot of an image is represented by the absolute color difference variation, and relative color difference variation expresses the variation in the image content. Extensive experiments are performed on five publicly available benchmark synthetic blur databases and two real blur databases, and the results prove that the proposed model work better than the other state-of-the-art and latest NR-IQA models for the prediction accuracy on blurry images. Besides, the model maintains the lowest computational complexity.

关键词： Image quality TV Image color analysis Databases Computational modeling Color Predictive models

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