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Modeling and control of automatic voltage regulation for a hydropower plant using advanced model predictive control 被引量:1
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作者 Ebunle Akupan Rene Willy Stephen Tounsi Fokui 《Global Energy Interconnection》 2025年第2期269-285,共17页
Fluctuating voltage levels in power grids necessitate automatic voltage regulators(AVRs)to ensure stability.This study examined the modeling and control of AVR in hydroelectric power plants using model predictive cont... Fluctuating voltage levels in power grids necessitate automatic voltage regulators(AVRs)to ensure stability.This study examined the modeling and control of AVR in hydroelectric power plants using model predictive control(MPC),which utilizes an extensive mathe-matical model of the voltage regulation system to optimize the control actions over a defined prediction horizon.This predictive feature enables MPC to minimize voltage deviations while accounting for operational constraints,thereby improving stability and performance under dynamic conditions.Thefindings were compared with those derived from an optimal proportional integral derivative(PID)con-troller designed using the artificial bee colony(ABC)algorithm.Although the ABC-PID method adjusts the PID parameters based on historical data,it may be difficult to adapt to real-time changes in system dynamics under constraints.Comprehensive simulations assessed both frameworks,emphasizing performance metrics such as disturbance rejection,response to load changes,and resilience to uncertainties.The results show that both MPC and ABC-PID methods effectively achieved accurate voltage regulation;however,MPC excelled in controlling overshoot and settling time—recording 0.0%and 0.25 s,respectively.This demonstrates greater robustness compared to conventional control methods that optimize PID parameters based on performance criteria derived from actual system behavior,which exhibited settling times and overshoots exceeding 0.41 s and 5.0%,respectively.The controllers were implemented using MATLAB/Simulink software,indicating a significant advancement for power plant engineers pursuing state-of-the-art automatic voltage regulations. 展开更多
关键词 automatic voltage regulation Artificial bee colony Evolutionary techniques Model predictive control PID controller HYDROPOWER
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Clinical observation on prognosis of mixed hemorrhoids treated with polidocanol injection combined with automatic elastic thread ligation operation 被引量:1
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作者 Yan-Mei Huang Dong Ouyang 《World Journal of Gastrointestinal Surgery》 2025年第1期209-216,共8页
BACKGROUND A total of 100 patients diagnosed with mixed hemorrhoids from October 2022 to September 2023 in our hospital were randomly divided into groups by dice rolling and compared with the efficacy of different tre... BACKGROUND A total of 100 patients diagnosed with mixed hemorrhoids from October 2022 to September 2023 in our hospital were randomly divided into groups by dice rolling and compared with the efficacy of different treatment options.AIM To analyze the clinical effect and prognosis of mixed hemorrhoids treated with polidocanol injection combined with automatic elastic thread ligation operation(RPH).METHODS A total of 100 patients with mixed hemorrhoids who visited our hospital from October 2022 to September 2023 were selected and randomly divided into the control group(n=50)and the treatment group(n=50)by rolling the dice.The procedure for prolapse and hemorrhoids(PPH)was adopted in the control group,while polidocanol foam injection+RPH was adopted in the treatment group.The therapeutic effects,operation time,wound healing time,hospital stay,pain situation(24 hours post-operative pain score,first defecation pain score),quality of life(QOL),incidence of complications(post-operative hemorrhage,edema,infection),incidence of anal stenosis 3 months post-operatively and recurrence rate 1 year post-operatively of the two groups were compared.RESULTS Compared with the control group,the total effective rate of treatment group was higher,and the difference was significant(P<0.05).The operation time/wound healing time/hospital stay in the treatment group were shorter than those in the control group(P<0.05).The pain scores at 24 hours after operation/first defecation pain score of the treatment group was significantly lower than those in the control group(P<0.05).After surgery,the QOL scores of the two groups decreased,with the treatment group having higher scores than that of the control group(P<0.05).Compared with the control group,the incidence of postoperative complications in the treatment group was lower,and the difference was significant(P<0.05);However,there was no significant difference in the incidence of postoperative bleeding between the two groups(P>0.05);There was no significant difference in the incidence of anal stenosis 3 months after operation and the recurrence rate 1 year after operation between the two groups(P>0.05).CONCLUSION For patients with mixed hemorrhoids,the therapeutic effect achieved by using polidocanol injection combined with RPH was better.The wounds of the patients healed faster,the postoperative pain was milder,QOL improved,and the incidence of complications was lower,and the short-term and long-term prognosis was good. 展开更多
关键词 Mixed hemorrhoids Polidocanol injection automatic elastic thread ligation operation Postoperative hemorrhage The degree of pain Recurrent rate
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基于改进Mask-Scoring R-CNN的肌纤维自动分割与表型计算方法研究
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作者 沃靖杰 田绪红 +3 位作者 尹令 杨杰 姚泽锴 蔡更元 《华中农业大学学报》 北大核心 2025年第2期134-144,共11页
为解决人工手动分割与半自动分割的精度及效率问题以及通用分割模型在面对各种噪声干扰时的表现不足,提出改进Mask-Scoring R-CNN的实例分割模型,实现对肌纤维细胞的高效分割。在Mask-Scoring R-CNN模型中引入CBAM(convolutional block ... 为解决人工手动分割与半自动分割的精度及效率问题以及通用分割模型在面对各种噪声干扰时的表现不足,提出改进Mask-Scoring R-CNN的实例分割模型,实现对肌纤维细胞的高效分割。在Mask-Scoring R-CNN模型中引入CBAM(convolutional block attention module)注意力机制,并对其进行改进,强化模型对特征信息的提取与表达,从而提升分割效果与模型在肌纤维分割任务中的泛化能力。改进Mask-Scoring RCNN模型在103张测试集的测试结果显示,表型数据测定值的均方根误差均比原模型更小,肌纤维总数均方根误差从2.08降至1.26,面积均方根误差从212.21μm^(2)降低至181.36μm^(2),平均直径均方根误差从2.87μm降低至1.47μm。试验结果表明改进后的模型能有效应对含噪声的肌纤维图像,在常见的噪声环境下依然能够准确分割出每个肌纤维。 展开更多
关键词 实例分割 Mask-scoring R-CNN 猪肉肌纤维表型 细胞分割 注意力机制
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Impact of Single-Phase Automatic Recloser of Critical Transmission Line on the Stability of the Power Transmission Network
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作者 Chuulan Natsagdorj Ganbat Gantamir Erdenebileg Doljinsuren 《Journal of Power and Energy Engineering》 2025年第2期43-56,共14页
In order to increase the stability of the Mongolia power system, a single-phase automatic reclosing device (SPAR) was introduced on double-circuit power lines built with a size of 330 kV, operating on a voltage of 220... In order to increase the stability of the Mongolia power system, a single-phase automatic reclosing device (SPAR) was introduced on double-circuit power lines built with a size of 330 kV, operating on a voltage of 220 kV and a length of 250 km. These overhead power lines (L-213, L-214) connect the 220/110/35 kV “Songino” substation with the “Mandal” substation and form system networks. This paper presents the challenges encountered when implementing single-phase automatic reclosing (SPAR) devices and compares the changes in power system parameters before and after SPAR deployment for a long 220 kV line. Simulations and analyses were carried out using DIgSILENT PowerFactory software, focusing on rotor angle stability, and the overall impact on the power system during short-circuit faults. The evaluation also utilized measurement data from the Wide Area Monitoring System (WAMS) to compare system behavior pre- and post-implementation of SPAR. The findings reveal that SPAR significantly enhances system reliability and stability, effectively mitigating the risk of oscillations and stability loss triggered by short circuits. This improvement contributes to a more resilient power system, reducing the potential for disturbances caused by faults. 展开更多
关键词 automatic Reclosing Single-Phase automatic Reclosing Relay Protection Overhead Power Lines System Stability Rotor Angle Stability
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New scoring system for the evaluation obstructive degrees based on computed tomography for obstructive colorectal cancer
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作者 Xin-Chang Shang-Guan Jun-Rong Zhang +7 位作者 Chao-Nan Lin Shuai Chen Yong Wei Wen-Xuan Chen Lin Pan Li-Qin Huang Shao-Hua Zheng Xian-Qiang Chen 《World Journal of Gastrointestinal Oncology》 2025年第3期122-132,共11页
BACKGROUND The degree of obstruction plays an important role in decision-making for obstructive colorectal cancer(OCRC).The existing assessment still relies on the colorectal obstruction scoring system(CROSS)which is ... BACKGROUND The degree of obstruction plays an important role in decision-making for obstructive colorectal cancer(OCRC).The existing assessment still relies on the colorectal obstruction scoring system(CROSS)which is based on a comprehensive analysis of patients’complaints and eating conditions.The data collection relies on subjective descriptions and lacks objective parameters.Therefore,a scoring system for the evaluation of computed tomography-based obstructive degree(CTOD)is urgently required for OCRC.AIM To explore the relationship between CTOD and CROSS and to determine whether CTOD could affect the short-term and long-term prognosis.METHODS Of 173 patients were enrolled.CTOD was obtained using k-means,the ratio of proximal to distal obstruction,and the proportion of nonparenchymal areas at the site of obstruction.CTOD was integrated with the CROSS to analyze the effect of emergency intervention on complications.Short-term and long-term outcomes were compared between the groups.RESULTS CTOD severe obstruction(CTOD grade 3)was an independent risk factor[odds ratio(OR)=3.390,95%confidence interval(CI):1.340-8.570,P=0.010]via multivariate analysis of short-term outcomes,while CROSS grade was not.In the CTOD-CROSS grade system,for the non-severe obstructive(CTOD 1-2 to CROSS 1-4)group,the complication rate of emergency interventions was significantly higher than that of non-emergency interventions(71.4%vs 41.8%,P=0.040).The postoperative pneumonia rate was higher in the emergency intervention group than in the non-severe obstructive group(35.7%vs 8.9%,P=0.020).However,CTOD grade was not an independent risk factor of overall survival and progression-free survival.CONCLUSION CTOD was useful in preoperative decision-making to avoid unnecessary emergency interventions and complications. 展开更多
关键词 Obstructive colorectal cancer scoring system Computed tomography-based obstructive degree Colorectal obstruction scoring system Emergency intervention
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Plasticity,Contingency,and Virtuality in the Age of Automatic Reproduction
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作者 Szymon Wróbel 《Philosophy Study》 2025年第4期135-144,共10页
In this paper,the author follows the trail of C.Malabou,Q.Meillassoux,and G.Deleuze and tries to test three philosophical concepts that seem to be particularly threatened in the era of automatic digital reproduction.T... In this paper,the author follows the trail of C.Malabou,Q.Meillassoux,and G.Deleuze and tries to test three philosophical concepts that seem to be particularly threatened in the era of automatic digital reproduction.These three concepts are plasticity(defended for many years by C.Malabou),contingency(reconstructed by Q.Meillassoux),and virtuality(developed by G.Deleuze).The main task of the text will be to reflect on which of these three concepts better protects our thinking against automation and stays faithful to the ideal of creativity.In what sense are plasticity,contingency,and the possibility of virtualization the a priori condition of any transformation,physical or intellectual,affective or conceptual metamorphosis?In what sense are these three concepts the only conditions for the survival of every living being?Would a being without contingency,plasticity,and disposition to virtualization simply be a dead being? 展开更多
关键词 automatic society CONTINGENCY PLASTICITY technical reproduction VIRTUALIZATION
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Self-compassion,automatic thoughts,and mental pain in depression:Mediating effects and clinical implications
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作者 Li-Na Ren Ji-Song Pang +6 位作者 Qiao-Na Jiang Xiao-Fei Zhang Lu-Lu Li Jing Wang Jian-Gong Li Yan-Yan Ma Wei Jia 《World Journal of Psychiatry》 2025年第4期207-215,共9页
BACKGROUND Depression is a leading global health concern with high suicide rates and recurrence.Cognitive models suggest that mental pain and automatic thoughts are central to depression's impact.The hypothesis is... BACKGROUND Depression is a leading global health concern with high suicide rates and recurrence.Cognitive models suggest that mental pain and automatic thoughts are central to depression's impact.The hypothesis is that self-compassion will be negatively associated with mental pain,mediated by automatic thoughts.AIM To determine the mediating role of automatic thoughts in the relationship between self-compassion and mental pain in individuals with depression.METHODS This cross-sectional study included 389 inpatients with depression from Tianjin Anding Hospital.Participants completed the Self-Compassion Scale-Chinese Version(SCS-C),Automatic Thought Questionnaire(ATQ),and Orbach&Mikulincer Mental Pain Scale-Chinese Version(OMMP).Data were analyzed using Pearson correlations,multiple linear regressions,and mediation analysis.RESULTS The SCS-C total score was 68.95±14.89,ATQ was 87.02±28.91,and OMMP was 129.01±36.74.Correlation analysis showed mental pain was positively associated with automatic thoughts(r=0.802,P<0.001)and negatively with selfcompassion(r=-0.636,P<0.001).Regression analysis indicated automatic thoughts(β=0.623,P<0.001)and self-compassion(β=-0.301,P<0.001)significantly predicted mental pain.Mediation analysis confirmed automatic thoughts partially mediated the relationship between self-compassion and mental pain(ab=-0.269,95%CI:-0.363 to-0.212).CONCLUSION Self-compassion is inversely related to mental pain in depression,with automatic thoughts playing a mediating role.These findings suggest potential therapeutic targets for alleviating mental pain in depressed patients. 展开更多
关键词 SELF-COMPASSION automatic thoughts Mental pain DEPRESSION Mediation analysis
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Improving gastrointestinal scoring systems for predicting short-term mortality in critically ill patients
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作者 Shane Moore Noel E Donlon 《World Journal of Gastroenterology》 2025年第5期137-139,共3页
Shen et al’s retrospective study aims to compare the utility of two separate scoring systems for predicting mortality attributable to gastrointestinal(GI)injury in critically ill patients[the GI Dysfunction Score(GID... Shen et al’s retrospective study aims to compare the utility of two separate scoring systems for predicting mortality attributable to gastrointestinal(GI)injury in critically ill patients[the GI Dysfunction Score(GIDS)and the Acute Gastroin-testinal Injury(AGI)grade].The authors note that this study is the first proposal that suggests an equivalence between the ability of both scores to predict mor-tality at 28 days from intensive care unit(ICU)admission.Shen et al retrospec-tively analysed an ICU cohort of patients utilising two physicians administering both the AGI grade and GIDS score,using electronic healthcare records and ICU flowsheets.Where these physicians disagreed about the scores,the final decision as to the scores was made by an associate chief physician,or chief physician.We note that the primary reason for the development of GIDS was to create a clear score for GI dysfunction,with minimal subjectivity or inter-operator variability.The subjectivity inherent to the older AGI grading system is what ultimately led to the development of GIDS in 2021.By ensuring consensus between physicians administering the AGI,Shen et al have controlled for one of this grading systems biggest issues.We have concerns,however,that this does not represent the real-world challenges associated with applying the AGI compared to the newer GIDS,and wonder if this arbitration process had not been instituted,would the two scoring systems remain equivalent in terms of predicted mortality? 展开更多
关键词 Gastrointestinal injury Critical care Patient mortality prediction Gastrointe-stinal Dysfunction Score Acute Gastrointestinal Injury grade Intensive care unit scoring systems
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Design of Automatic Correction Device for Belt Conveyor
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作者 Pengxiang ZHAO Wenwu ZHANG +3 位作者 Guangchen Xu Yu XU Zhengliang ZHANG Xueshu LIU 《Mechanical Engineering Science》 2025年第1期1-3,共3页
Belt conveyors are prone to problems suchas conveyor belt deviation during operation.The main correction method is to adjust the angle of the roller frame,but the current adjustment is mostly manual.In order to solve ... Belt conveyors are prone to problems suchas conveyor belt deviation during operation.The main correction method is to adjust the angle of the roller frame,but the current adjustment is mostly manual.In order to solve the problem of low equipment transportation efficiency and low safety causedby conveyor belt deviation,a detection mechanism that can effectively detect conveyor belt deviation parameters is designed,and the working condition information is accurately transmitted to the PLC controller.If an abnormality is found,the designed correction device will correct the deviation,effectively ensuring the reliable and stable operation of the belt conveyor. 展开更多
关键词 belt conveyor deviation correction fully automatic
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Development and validation of a risk prediction model for gastroesophageal reflux disease:Gastroesophageal Reflux Disease Risk Scoring System
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作者 Shanmathi Subramanian Umashri Sundararaju +4 位作者 Hamrish Kumar Rajakumar Varsha Coimbatore Sathyabal Arun Murugan Pavithra Gnanavel Kasinathan Sathishkumar 《World Journal of Gastrointestinal Pathophysiology》 2025年第2期57-67,共11页
BACKGROUND The rising global prevalence of gastroesophageal reflux disease(GERD)has been closely linked to lifestyle changes driven by globalization.GERD imposes a substantial public health burden,affecting quality of... BACKGROUND The rising global prevalence of gastroesophageal reflux disease(GERD)has been closely linked to lifestyle changes driven by globalization.GERD imposes a substantial public health burden,affecting quality of life and leading to potential complications.Early intervention through lifestyle modification can prevent disease onset;however,there is a lack of effective risk prediction models that emphasize primary prevention.AIM To develop and validate a GERD Risk Scoring System(GRSS)aimed at identifying high-risk individuals and promoting primary prevention strategies.METHODS A 45-item questionnaire encompassing major lifestyle and demographic risk factors was developed and validated.It was administered to healthy controls and GERD patients.Two regression models-one using continuous variables and another using categorized variables-were used to develop a computational prediction equation and a clinically applicable scoring scale.An independent validation cohort of 355 participants was used to assess model performance in terms of discrimination(C-index),calibration,sensitivity,specificity,internal consistency(Cronbach's alpha),and test-retest reliability(intraclass correlation coefficient,Bland-Altman analysis).RESULTS Significant associations were observed between GERD and key lifestyle factors.The derived GRSS equation and scoring scale demonstrated strong discriminative ability,with high sensitivity and specificity.The scoring system exhibited excellent internal consistency(Cronbach’s alpha)and strong test-retest reliability.The C-index indicated excellent predictive accuracy in both derivation and validation cohorts.CONCLUSION GRSS offers a novel and validated approach to GERD risk prediction,combining a robust equation for digital applications and a practical scale for clinical use.Its ability to accurately identify at-risk individuals supports a paradigm shift toward primary prevention,underscoring its significance in addressing the growing burden of GERD at the population level. 展开更多
关键词 Gastroesophageal reflux disease Risk prediction Lifestyle factors Gastroesophageal Reflux Disease Risk scoring System score Logistic regression Validation study QUESTIONNAIRE Primary prevention Early intervention
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Automatic Digital Inclinometer Calibration System Based on Image Recognition
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作者 FENG Zheming CHEN Gang +1 位作者 NAN Zhuojiang TAO Wei 《Journal of Shanghai Jiaotong university(Science)》 2025年第2期280-290,共11页
Traditional calibration method for the digital inclinometer relies on manual inspection,and results in its disadvantages of complicated process,low-efficiency and human errors easy to be introduced.To improve both the... Traditional calibration method for the digital inclinometer relies on manual inspection,and results in its disadvantages of complicated process,low-efficiency and human errors easy to be introduced.To improve both the calibration accuracy and efficiency of digital inclinometer,an automatic digital inclinometer calibration system was developed in this study,and a new display tube recognition algorithm was proposed.First,a high-precision automatic turntable was taken as the reference to calculate the indication error of the inclinometer.Then,the automatic inclinometer calibration control process and the digital inclinometer zero-setting function were formulated.For display tube recognition,a new display tube recognition algorithm combining threading method and feature extraction method was proposed.Finally,the calibration system was calibrated by photoelectric autocollimator and regular polygon mirror,and the calibration system error and repeatability were calculated via a series of experiments.The experimental results showed that the indication error of the proposed calibration system was less than 4",and the repeatability was 3.9".A digital inclinometer with the resolution of 0.1°was taken as a testing example,within the calibration points'range of[-90°,90°],the repeatability of the testing was 0.085°,and the whole testing process was less than 90 s.The digital inclinometer indication error is mainly introduced by the digital inclinometer resolution according to the uncertainty evaluation. 展开更多
关键词 digital inclinometer automatic calibration high-precision turntable number recognition
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Design and Performance Study of an Automatic Compensation Wear High-Pressure Rotary Sealing Device
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作者 Hongxiang Jiang Huihe Zhao +2 位作者 Xiaodi Zhang Hongsheng Li Chao Xia 《Chinese Journal of Mechanical Engineering》 2025年第3期514-530,共17页
A rotary sealing device that automatically compensates for wear is designed to address the issues of easy wear and the short service life of the rotary sealing device with automatic wear compensation in mining machine... A rotary sealing device that automatically compensates for wear is designed to address the issues of easy wear and the short service life of the rotary sealing device with automatic wear compensation in mining machinery.After the end face of the guide sleeve wears out,it still tightly adheres to the sealing valve seat under the pressure difference,achieving automatic wear compensation.Based on fluid-solid coupling technology,the structural strength of the rotary sealing device was checked.The influence of factors on the sealing performance of rotary sealing devices was studied using the control variable method.The results show that as the pressure of water increases,the leakage rate of the sealing device decreases,and after 30 MPa,the leakage rate is almost 0 mL/h.The temperature of the rotating sealing device increases with the increase of rotation speed or pressure,and the temperature is more affected by the rotation speed factor.The frictional torque increases with increasing pressure and is independent of rotational speed.Comprehensive analysis shows that the wear resistance and reliability level of the sealing guide sleeve material is PVDF>PEEK>PE>PA.This study designs a high-pressure automatic compensation wear rotary sealing device and selects the optimal sealing material,providing technical support for the application of high-pressure water jet in mining machinery. 展开更多
关键词 Rotary seal High-pressure water automatic compensation Fluid-solid Performance analysis
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MonoTracker:Monocular-Based Fully Automatic Registration and Real-Time Tracking Method for Neurosurgical Robots
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作者 Kai Chen Diansheng Chen +2 位作者 Ruijie Zhang Cai Meng Zhouping Tang 《Chinese Journal of Mechanical Engineering》 2025年第4期371-397,共27页
Robot-assisted surgery has become an indispensable component in modern neurosurgical procedures.However,existing registration methods for neurosurgical robots often rely on high-end hardware and involve prolonged or u... Robot-assisted surgery has become an indispensable component in modern neurosurgical procedures.However,existing registration methods for neurosurgical robots often rely on high-end hardware and involve prolonged or unstable registration times,limiting their applicability in dynamic and time-sensitive intraoperative settings.This paper proposes a novel fully automatic monocular-based registration and real-time tracking method.First,dedicated fiducials are designed,and an automatic preoperative and intraoperative detection method for these fiducials is introduced.Second,a geometric representation of the fiducials is constructed based on a 2D KD-Tree.Through a two-stage optimization process,the depth of 2D fiducials is estimated,and 2D-3D correspondences are established to achieve monocular registration.This approach enables fully automatic intraoperative registration using only a single optical camera.Finally,a six-degree-of-freedom visual servo control strategy inspired by the mass-spring-damper system is proposed.By integrating artificial potential field and admittance control,the strategy ensures real-time responsiveness and stable tracking.Experimental results demonstrate that the proposed method achieves a registration time of 0.23 s per instance with an average error of 0.58 mm.Additionally,the motion performance of the control strategy has been validated.Preliminary experiments verify the effectiveness of MonoTracker in dynamic tracking scenarios.This method holds promise for enhancing the adaptability of neurosurgical robots and offers significant clinical application potential. 展开更多
关键词 Neurosurgical robot automatic detection Monocular registration Visual servo control
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Automatic diagnosis of extraocular muscle palsy based on machine learning and diplopia images
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作者 Xiao-Lu Jin Xue-Mei Li +1 位作者 Tie-Juan Liu Ling-Yun Zhou 《International Journal of Ophthalmology(English edition)》 2025年第5期757-764,共8页
AIM:To develop different machine learning models to train and test diplopia images and data generated by the computerized diplopia test.METHODS:Diplopia images and data generated by computerized diplopia tests,along w... AIM:To develop different machine learning models to train and test diplopia images and data generated by the computerized diplopia test.METHODS:Diplopia images and data generated by computerized diplopia tests,along with patient medical records,were retrospectively collected from 3244 cases.Diagnostic models were constructed using logistic regression(LR),decision tree(DT),support vector machine(SVM),extreme gradient boosting(XGBoost),and deep learning(DL)algorithms.A total of 2757 diplopia images were randomly selected as training data,while the test dataset contained 487 diplopia images.The optimal diagnostic model was evaluated using test set accuracy,confusion matrix,and precision-recall curve(P-R curve).RESULTS:The test set accuracy of the LR,SVM,DT,XGBoost,DL(64 categories),and DL(6 binary classifications)algorithms was 0.762,0.811,0.818,0.812,0.858 and 0.858,respectively.The accuracy in the training set was 0.785,0.815,0.998,0.965,0.968,and 0.967,respectively.The weighted precision of LR,SVM,DT,XGBoost,DL(64 categories),and DL(6 binary classifications)algorithms was 0.74,0.77,0.83,0.80,0.85,and 0.85,respectively;weighted recall was 0.76,0.81,0.82,0.81,0.86,and 0.86,respectively;weighted F1 score was 0.74,0.79,0.82,0.80,0.85,and 0.85,respectively.CONCLUSION:In this study,the 7 machine learning algorithms all achieve automatic diagnosis of extraocular muscle palsy.The DL(64 categories)and DL(6 binary classifications)algorithms have a significant advantage over other machine learning algorithms regarding diagnostic accuracy on the test set,with a high level of consistency with clinical diagnoses made by physicians.Therefore,it can be used as a reference for diagnosis. 展开更多
关键词 machine learning extraocular muscle paralysis automatic diagnosis diplopia images
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Research status and progress of deep learning in automatic esophageal cancer detection
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作者 Jing Chen Xin Fan +4 位作者 Qiao-Liang Chen Wei Ren Qi Li Dong Wang Jian He 《World Journal of Gastrointestinal Oncology》 2025年第5期57-66,共10页
Esophageal cancer(EC),a common malignant tumor of the digestive tract,requires early diagnosis and timely treatment to improve patient prognosis.Automated detection of EC using medical imaging has the potential to inc... Esophageal cancer(EC),a common malignant tumor of the digestive tract,requires early diagnosis and timely treatment to improve patient prognosis.Automated detection of EC using medical imaging has the potential to increase screening efficiency and diagnostic accuracy,thereby significantly improving long-term survival rates and the quality of life of patients.Recent advances in deep learning(DL),particularly convolutional neural networks,have demons-trated remarkable performance in medical imaging analysis.These techniques have shown significant progress in the automated identification of malignant tumors,quantitative analysis of lesions,and improvement in diagnostic accuracy and efficiency.This article comprehensively examines the research progress of DL in medical imaging for EC,covering various imaging modalities such as digital pathology,endoscopy,computed tomography,etc.It explores the clinical value and application prospects of DL in EC screening and diagnosis.Additionally,the article addresses several critical challenges that must be overcome for the clinical translation of DL techniques,including constructing high-quality datasets,promoting multimodal feature fusion,and optimizing artificial intelligence-clinical workflow integration.By providing a detailed overview of the current state of DL in EC imaging and highlighting the key challenges and future directions,this article aims to guide future research and facilitate the clinical implementation of DL technologies in EC management,ultimately contributing to better patient outcomes. 展开更多
关键词 Esophageal cancer Artificial intelligence Deep learning automatic detection Medical imaging
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Validating a novel scoring system for the assessment and treatment of functional gastrointestinal disorders in children
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作者 Bhaswati Chakrabarti Acharyya Pritha Das Meghdeep Mukhopadhyay 《World Journal of Clinical Pediatrics》 2025年第3期231-237,共7页
BACKGROUND Functional gastrointestinal disorders(FGIDs),defined as‘Disorders of Gut-Brain Interaction’,are now considered a global health problem.There is a dearth of concepts and scales to assess the severity of th... BACKGROUND Functional gastrointestinal disorders(FGIDs),defined as‘Disorders of Gut-Brain Interaction’,are now considered a global health problem.There is a dearth of concepts and scales to assess the severity of the different symptoms encountered while dealing with the variety of FGIDs as described in the ROME IV classi-fication.We introduced a novel scoring system with the incorporation of 16 different symptoms called Bacharyya’s Questionnaire Scale and started using it while dealing with children suffering from FGIDs.AIM To verify the usefulness and applicability of this recently developed scale,this study was undertaken with the objectives to establish the validity of this scoring system in assessing the severity of symptoms associated with a specific FGID in children and to determine the scoring system's applicability in assessing the treatment response.METHODS The study included children aged 5 to 18 years diagnosed with any FGID based on ROME IV criteria.They completed the newly developed scale and a Visual Analog Scale at initial diagnosis and after a 2-month treatment period.A control group without FGID participated for comparative baseline purposes.Treatment response was defined as a less than or equal to 50%reduction in the total score,which is statistically significant.RESULTS Results from a comprehensive cohort of 190 cases and 90 controls indicated a female preponderance(57.9%)and prevalent disorders such as functional constipation(28%)and functional abdominal pain,not otherwise specified(21%).The grade of FGID(mild,moderate,severe)experienced by the patients was also derived.Post-treatment,96 children demonstrated symptom improvement.The Spearman rank correlation coefficient for pre(r=0.72,95%CI:0.65-0.77,P value<0.0001)and post(r=0.49,95%CI:0.3-0.64,P value<0.0001)treatment data showed positive results with significant P values.CONCLUSION The novel scoring system shows high comprehensibility and gives an objective view of the symptomatology of FGIDs.The use of this novel score in clinical settings will be helpful to typify the FGIDs and may significantly improve decision-making processes to initiate appropriate treatment. 展开更多
关键词 SCORE Functional gastrointestinal disorder CHILDREN QUESTIONNAIRE SCALE Quality of life
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A Review of Automatic Pre-editing Approaches in Machine Translation
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作者 WANG Jun-song MENG Ya-qi WANG Ai-qing 《Journal of Literature and Art Studies》 2025年第6期483-489,共7页
With the development of machine translation technology,automatic pre-editing has attracted increasing research attention for its important role in improving translation quality and efficiency.This study utilizes UAM C... With the development of machine translation technology,automatic pre-editing has attracted increasing research attention for its important role in improving translation quality and efficiency.This study utilizes UAM Corpus Tool 3.0 to annotate and categorize 99 key publications between 1992 and 2024,tracing the research paths and technological evolution of automatic pre-translation editing.The study finds that current approaches can be classified into four categories:controlled language-based approaches,text simplification approaches,interlingua-based approaches,and large language model-driven approaches.By critically examining their technical features and applicability in various contexts,this review aims to provide valuable insights to guide the future optimization and expansion of pre-translation editing systems. 展开更多
关键词 automatic pre-editing machine translation controlled language text simplification large language models
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Evaluation of scoring systems and hematological parameters in the severity stratification of early-phase acute pancreatitis
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作者 Pei-Na Shi Zhang-Zhang Song +1 位作者 Xu-Ni He Jie-Ming Hong 《World Journal of Gastroenterology》 2025年第15期50-59,共10页
BACKGROUND Acute pancreatitis(AP)is an emergency gastrointestinal disease that requires immediate diagnosis and urgent clinical treatment.An accurate assessment and precise staging of severity are essential in initial... BACKGROUND Acute pancreatitis(AP)is an emergency gastrointestinal disease that requires immediate diagnosis and urgent clinical treatment.An accurate assessment and precise staging of severity are essential in initial intensive therapy.AIM To explore the prognostic value of inflammatory markers and several scoring systems[Acute Physiology and Chronic Health Evaluation II,the bedside index of severity in AP(BISAP),Ranson’s score,the computed tomography severity index(CTSI)and sequential organ failure assessment]in severity stratification of earlyphase AP.METHODS A total of 463 patients with AP admitted to our hospital between 1 January 2021 and 30 June 2024 were retrospectively enrolled in this study.Inflammation marker and scoring system levels were calculated and compared between different severity groups.Relationships between severity and several predictors were evaluated using univariate and multivariate logistic regression models.Predictive ability was estimated using receiver operating characteristic curves.RESULTS Of the 463 patients,50(10.80%)were classified as having severe AP(SAP).The results revealed that the white cell count significantly increased,whereas the prognostic nutritional index measured within 48 hours(PNI48)and calcium(Ca^(2+))were decreased as the severity of AP increased(P<0.001).According to multivariate logistic regression,C-reactive protein measured within 48 hours(CRP_(48)),Ca^(2+)levels,and PNI48 were independent risk factors for predicting SAP.The area under the curve(AUC)values for the CRP_(48),Ca^(2+),PNI48,Acute Physiology and Chronic Health Evaluation II,sequential organ failure assessment,BISAP,CTSI,and Ranson scores for the prediction of SAP were 0.802,0.736,0.871,0.799,0.783,0.895,0.931 and 0.914,respectively.The AUC for the combined CRP_(48)+Ca^(2+)+PNI48 model was 0.892.The combination of PNI48 and Ranson achieved an AUC of 0.936.CONCLUSION Independent risk factors for developing SAP include CRP_(48),Ca^(2+),and PNI48.CTSI,BISAP,and the combination of PNI48 and the Ranson score can act as reliable predictors of SAP. 展开更多
关键词 Acute pancreatitis scoring systems Severity stratification Prognostic nutritional index SEVERITY
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A Fast Automatic Road Crack Segmentation Method Based on Deep Learning with Model Compression Framework
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作者 Minggang Xu Chong Li +4 位作者 Xiangli Kong Yuming Wu Zhixiang Lu Jionglong Su Zhun Fan 《Journal of Beijing Institute of Technology》 2025年第4期388-404,共17页
Computer-vision and deep-learning techniques are widely applied to detect,monitor,and assess pavement conditions including road crack detection.Traditional methods fail to achieve satisfactory accuracy and generalizat... Computer-vision and deep-learning techniques are widely applied to detect,monitor,and assess pavement conditions including road crack detection.Traditional methods fail to achieve satisfactory accuracy and generalization performance in for crack detection.Complex network model can generate redundant feature maps and computational complexity.Therefore,this paper proposes a novel model compression framework based on deep learning to detect road cracks,which can improve the detection efficiency and accuracy.A distillation loss function is proposed to compress the teacher model,followed by channel pruning.Meanwhile,a multi-dilation model is proposed to improve the accuracy of the model pruned.The proposed method is tested on the public database CrackForest dataset(CFD).The experimental results show that the proposed method is more efficient and accurate than other state-of-art methods. 展开更多
关键词 automatic road crack detection deep learning U-net DISTILLATION channel pruning multi-dilation model
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Prognostic challenges in alcoholic hepatitis:From scoring systems to clinical predictors
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作者 Mariana M Ramírez-Mejía Arnulfo E Morales-Galicia Nahum Méndez-Sánchez 《World Journal of Hepatology》 2025年第5期10-16,共7页
In this article,we discuss the recently published article by Yang et al.This retrospective analysis,which was conducted at a large urban tertiary care center,focused on comparing Lille model scores at days 3 and 7 wit... In this article,we discuss the recently published article by Yang et al.This retrospective analysis,which was conducted at a large urban tertiary care center,focused on comparing Lille model scores at days 3 and 7 with established scoring systems and identifying critical clinical predictors,such as renal dysfunction,nutritional status,and underlying cirrhosis.Alcoholic hepatitis(AH),a severe manifestation of alcohol-related liver disease,is associated with high morbidity and mortality,necessitating accurate prognostic tools and comprehensive clinical assessments.Prognostic tools are invaluable for early risk stratification,but they must be contextualized within the multifactorial nature of AH.Acute renal dysfunction and poor nutritional status,for example,are not just complications but pivotal markers of disease severity and systemic impact.Addressing these factors requires a holistic approach that extends beyond scoring systems to include targeted interventions and comprehensive patient care.This editorial emphasizes the need for a paradigm shift in AH management,where prognostic models are complemented by a deeper understanding of patient-specific factors.Such an approach can guide clinicians in tailoring therapies and improving outcomes for this high-risk population. 展开更多
关键词 Alcoholic hepatitis Prognostic scoring systems Lille model Nutritional status Renal dysfunction
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