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ACHIEVEMENTS SCORED IN CLIMBING PROGRAM
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作者 Chen Jiaoxian 《Bulletin of the Chinese Academy of Sciences》 1997年第4期300-308,共9页
The National Basic Research Priorities Program (the so-called Climbing Program), a combination of guidance and mandatory, is a major component of the country’s efforts in basic research during the Eighth Five-Year Pl... The National Basic Research Priorities Program (the so-called Climbing Program), a combination of guidance and mandatory, is a major component of the country’s efforts in basic research during the Eighth Five-Year Plan period (1991-1995). Its objectives are to foster qualified personnel and improve the quality and ability of research workers; to consolidate the academic position of the science community in major areas of basic research and emerging branches of science and technology, keep- 展开更多
关键词 ACHIEVEMENTS scored IN CLIMBING PROGRAM CAS
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High scored thyroid storm after stomach cancer perforation: A case report
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作者 Seung Min Baik Yejune Pae Jae-Myeong Lee 《World Journal of Clinical Cases》 SCIE 2022年第24期8768-8774,共7页
BACKGROUND Thyroid storm is a life-threatening emergency.Reportedly,the prevalence of thyroid storm is 1%-2%among patients admitted to the hospital for thyrotoxicosis.Burch and Wartofsky(1993)introduced a scoring syst... BACKGROUND Thyroid storm is a life-threatening emergency.Reportedly,the prevalence of thyroid storm is 1%-2%among patients admitted to the hospital for thyrotoxicosis.Burch and Wartofsky(1993)introduced a scoring system using precise clinical criteria to identify thyroid storms.Only 17 cases of thyroid storm with a score>70 points have been reported.Although thyroid storms are uncommon,their clinical findings resemble those of sepsis.CASE SUMMARY A 48-year-old man was referred to the emergency room from a local clinic owing to suspicion of gastric ulcer perforation;medications for hypertension,diabetes mellitus,and hyperthyroidism had been suspended 1 year prior to this visit.We performed an emergency distal gastrectomy with Billroth II anastomosis for gastric cardia cancer perforation,and the patient was referred to the surgical intensive care unit(ICU).On the 2nd d in the ICU,his body temperature(BT)increased to 41.3℃ at 19:00,with the thyroid storm score(90 points)peaking at 18:00(BT;41.2℃,pulse rate;138/min,irritable status).The patient was administered propylthiouracil,intravenous glucocorticoids,acetaminophen,and Lugol’s solution daily.Subsequently,we performed bladder irrigation with cold saline using a Foley catheter and applied a hypothermic blanket to decrease the patient's BT.His vital signs were stable on the 8th day in the ICU.CONCLUSION Thyroid storms are uncommon,with few reports in the literature;however,their clinical findings resemble those of sepsis and require further investigation.Since an untreated thyroid storm results in a high mortality rate,it should be investigated when managing sepsis. 展开更多
关键词 Thyroid storm Stomach cancer Severity score SEPSIS Case report
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Efficient Arabic Essay Scoring with Hybrid Models: Feature Selection, Data Optimization, and Performance Trade-Offs
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作者 Mohamed Ezz Meshrif Alruily +4 位作者 Ayman Mohamed Mostafa Alaa SAlaerjan Bader Aldughayfiq Hisham Allahem Abdulaziz Shehab 《Computers, Materials & Continua》 2026年第1期2274-2301,共28页
Automated essay scoring(AES)systems have gained significant importance in educational settings,offering a scalable,efficient,and objective method for evaluating student essays.However,developing AES systems for Arabic... Automated essay scoring(AES)systems have gained significant importance in educational settings,offering a scalable,efficient,and objective method for evaluating student essays.However,developing AES systems for Arabic poses distinct challenges due to the language’s complex morphology,diglossia,and the scarcity of annotated datasets.This paper presents a hybrid approach to Arabic AES by combining text-based,vector-based,and embeddingbased similarity measures to improve essay scoring accuracy while minimizing the training data required.Using a large Arabic essay dataset categorized into thematic groups,the study conducted four experiments to evaluate the impact of feature selection,data size,and model performance.Experiment 1 established a baseline using a non-machine learning approach,selecting top-N correlated features to predict essay scores.The subsequent experiments employed 5-fold cross-validation.Experiment 2 showed that combining embedding-based,text-based,and vector-based features in a Random Forest(RF)model achieved an R2 of 88.92%and an accuracy of 83.3%within a 0.5-point tolerance.Experiment 3 further refined the feature selection process,demonstrating that 19 correlated features yielded optimal results,improving R2 to 88.95%.In Experiment 4,an optimal data efficiency training approach was introduced,where training data portions increased from 5%to 50%.The study found that using just 10%of the data achieved near-peak performance,with an R2 of 85.49%,emphasizing an effective trade-off between performance and computational costs.These findings highlight the potential of the hybrid approach for developing scalable Arabic AES systems,especially in low-resource environments,addressing linguistic challenges while ensuring efficient data usage. 展开更多
关键词 Automated essay scoring text-based features vector-based features embedding-based features feature selection optimal data efficiency
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MIIT: The Nonferrous Industry In China Scored A Profit Of RMB 28.92 Billion In Q1 2019
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《China Nonferrous Metals Monthly》 2019年第6期5-6,共2页
According to public information of the Ministry of Industry and Information Technology(MIIT),in Q1 2019,the nonferrous industry in China realized stable operation,enhanced industry confidence and mitigated performance... According to public information of the Ministry of Industry and Information Technology(MIIT),in Q1 2019,the nonferrous industry in China realized stable operation,enhanced industry confidence and mitigated performance decline.First,the production was basically stable. 展开更多
关键词 China The Nonferrous INDUSTRY In China scored A PROFIT Of RMB 28.92 Billion In Q1 2019
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基于近似马尔可夫毯与GBDT的煤矿职业健康噪声风险分类
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作者 高晓旭 田佳可 +2 位作者 高璐 杜芦 范萌杰 《中国安全科学学报》 北大核心 2025年第9期253-262,共10页
为精准判断综采工作面噪声对作业人员的健康损害程度,采用人-机-环-管系统理论结合Fisher Score、最大信息系数及近似马尔可夫毯方法,确定噪声职业健康的关键影响因素;构建基于梯度提升决策树(GBDT)算法的煤矿噪声风险分类预测模型,并以... 为精准判断综采工作面噪声对作业人员的健康损害程度,采用人-机-环-管系统理论结合Fisher Score、最大信息系数及近似马尔可夫毯方法,确定噪声职业健康的关键影响因素;构建基于梯度提升决策树(GBDT)算法的煤矿噪声风险分类预测模型,并以Kappa系数及其准确率作为模型效率的指标,来对比验证本算法模型的准确性。结果表明:综采工作面噪声职业健康损害情况与个体状况、设备配置、环境因素及职业健康管理等因素密切相关,其中,岗位类别、个体年龄、工龄时长、防护意识、设备自动化程度、噪声监测点合格率、噪声暴露量、混响时间和管理机构及人员为职业健康风险分类预测的关键指标;基于GBDT构建的煤矿噪声职业健康风险分类预测模型准确率最大达99.6%,平均准确率和Kappa系数分别为98.3%和0.958;计算确定6种综采工作面噪声职业健康风险分类预测模型评估准确率次序为:GBDT>遗传算法优化随机森林算法(GA-RF)>粒子群算法优化最小二乘支持向量机算法(PSO-LSSVM)>随机森林算法(RF)>支持向量机算法(SVM)>决策树。 展开更多
关键词 近似马尔可夫毯 梯度提升决策树(GBDT) 煤矿噪声 噪声健康风险分类 职业健康 Fisher Score
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Correlation analyse between thyroid hormone levels and severity of schizophrenia symptoms 被引量:1
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作者 Qi-Hui Jiang Wei-Dong Gong 《World Journal of Psychiatry》 SCIE 2025年第1期63-71,共9页
BACKGROUND The imbalance of hormone levels in the body is closely related to the occurrence and progression of schizophrenia,especially thyroid hormones.AIM To study the relationship between triiodothyronine(T3),thyro... BACKGROUND The imbalance of hormone levels in the body is closely related to the occurrence and progression of schizophrenia,especially thyroid hormones.AIM To study the relationship between triiodothyronine(T3),thyroxine(T4),free T3(FT3),free T4(FT4),thyroid stimulating hormone(TSH)and schizophrenia.METHODS In this study,100 schizophrenia patients were selected from our hospital between April 2022 and April 2024.Their clinical data were analyzed retrospectively.Based on the Positive and Negative Syndrome Scale(PANSS)score,patients were divided into mild(1-3 points,n=39),moderate(4 points,n=45),and severe groups(5-7 points,n=16).Additionally,55 healthy individuals served as a control group.Venous blood samples were collected to measure T3,T4,FT3,FT4,TSH,and cortisol concentrations,analyzing their relationship with PANSS scores.RESULTS The serum levels of T3,FT3,FT4,TSH and cortisol in the schizophrenia group were lower than those in the control group(P<0.05).With the increase of the severity of the disease,the concentrations of T3 and T4 decreased,while the con-centrations of TSH and cortisol increased(P<0.05).The concentrations of TSH and cortisol were positively correlated with the PANSS score,while T3 and T4 were negatively correlated with the PANSS score(P<0.05).The receiver ope-rating characteristic curve results showed that T3,T4,TSH,and cortisol had good efficacy in the diagnosis of schizophrenia.Logistic results showed that decreased T3 level,decreased T4 level,decreased TSH level and increased cortisol level may be independent risk factors for schizophrenia.CONCLUSION Thyroid hormone levels are associated with the severity of schizophrenia symptoms,which can provide new solutions for the diagnosis and treatment of schizophrenia. 展开更多
关键词 Thyroid hormone SCHIZOPHRENIA Symptom severity Positive and Negative Syndrome Scale score CORTISOL
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Effects of exercise-cognitive dual-task training on elderly patients with cognitive frailty and depression 被引量:2
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作者 Ying Zhou Xiao-Ming Miao +4 位作者 Kai-Lian Zhou Cheng-Ji Yu Ping Lu Yin Lu Juan Zhao 《World Journal of Psychiatry》 2025年第4期149-159,共11页
BACKGROUND Cognitive frailty and depression are prevalent among the elderly,significantly impairing physical and cognitive functions,psychological well-being,and quality of life.Effective interventions are essential t... BACKGROUND Cognitive frailty and depression are prevalent among the elderly,significantly impairing physical and cognitive functions,psychological well-being,and quality of life.Effective interventions are essential to mitigate these adverse effects and enhance overall health outcomes in this population.AIM To evaluate the effects of exercise-cognitive dual-task training on frailty,cognitive function,psychological status,and quality of life in elderly patients with cognitive frailty and depression.METHODS A retrospective study was conducted on 130 patients with cognitive frailty and depression admitted between December 2021 and December 2023.Patients were divided into a control group receiving routine intervention and an observation group undergoing exercise-cognitive dual-task training in addition to routine care.Frailty,cognitive function,balance and gait,psychological status,and quality of life were assessed before and after the intervention.RESULTS After the intervention,the frailty score of the observation group was(5.32±0.69),lower than that of the control group(5.71±0.55).The Montreal cognitive assessment basic scale score in the observation group was(24.06±0.99),higher than the control group(23.43±1.40).The performance oriented mobility assessment score in the observation group was(21.81±1.24),higher than the control group(21.15±1.26).The self-efficacy in the observation group was(28.27±2.66),higher than the control group(30.05±2.66).The anxiety score in the hospital anxiety and depression scale(HADS)for the observation group was(5.86±0.68),lower than the control group(6.21±0.64).The depression score in the HADS for the observation group was(5.67±0.75),lower than the control group(6.27±0.92).Additionally,the scores for each dimension of the 36-item short form survey in the observation group were higher than those in the control group,with statistically significant differences(P<0.05).CONCLUSION Exercise-cognitive dual-task training is beneficial for improving frailty,enhancing cognitive function,and improving psychological status and quality of life in elderly patients with cognitive frailty and depression. 展开更多
关键词 Exercise-cognitive dual-task training Elderly patients Cognitive frailty Depression patients Frailty score Cognitive function
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Modified National Early Warning Score 2,a reliable early warning system for predicting treatment outcomes in patients with emphysematous pyelonephritis 被引量:1
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作者 Sriram Krishnamoorthy Gayathri Thiruvengadam +3 位作者 Hariharasudhan Sekar Velmurugan Palaniyandi Srinivasan Ramadurai Senthil Narayanasamy 《World Journal of Nephrology》 2025年第2期125-138,共14页
BACKGROUND Emphysematous pyelonephritis(EPN)is a life-threatening necrotizing renal parenchyma infection characterized by gas formation due to severe bacterial infection,predominantly affecting diabetic and immunocomp... BACKGROUND Emphysematous pyelonephritis(EPN)is a life-threatening necrotizing renal parenchyma infection characterized by gas formation due to severe bacterial infection,predominantly affecting diabetic and immunocompromised patients.It carries high morbidity and mortality,requiring early diagnosis and timely intervention.Various prognostic scoring systems help in triaging critically ill patients.The National Early Warning Score 2(NEWS 2)scoring system is a widely used physiological assessment tool that evaluates clinical deterioration based on vital parameters,but its standard form lacks specificity for risk stratification in EPN,necessitating modifications to improve treatment decisionmaking and prognostic accuracy in this critical condition.AIM To highlight the need to modify the NEWS 2 score to enable more intense monitoring and better treatment outcomes.METHODS This prospective study was done on all EPN patients admitted to our hospital over the past 12 years.A weighted average risk-stratification index was calculated for each of the three groups,mortality risk was calculated for each of the NEWS 2 scores,and the need for intervention for each of the three groups was calculated.The NEWS 2 score was subsequently modified with 0-6,7-14 and 15-20 scores included in groups 1,2 and 3,respectively.RESULTS A total of 171 patients with EPN were included in the study,with a predominant association with diabetes(90.6%)and a female-to-male ratio of 1.5:1.The combined prognostic scoring of the three groups was 10.7,13.0,and 21.9,respectively(P<0.01).All patients managed conservatively belonged to group 1(P<0.01).Eight patients underwent early nephrectomy,with six from group 3(P<0.01).Overall mortality was 8(4.7%),with seven from group 3(87.5%).The cutoff NEWS 2 score for mortality was identified to be 15,with a sensitivity of 87.5%,specificity of 96.9%,and an overall accuracy rate of 96.5%.The area under the curve to predict mortality based on the NEWS 2 score was 0.98,with a confidence interval of(0.97,1.0)and P<0.001.CONCLUSION Modified NEWS 2(mNEWS 2)score dramatically aids in the appropriate assessment of treatment-related outcomes.MNEWS 2 scores should become the practice standard to reduce the morbidity and mortality associated with this dreaded illness. 展开更多
关键词 PYELONEPHRITIS Emphysematous NEPHRECTOMY National Early Warning Score 2 MORTALITY
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Rectal neuroendocrine tumors: Can we predict their behavior? 被引量:1
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作者 Elisabetta Dell'Unto Francesco Panzuto Gianluca Esposito 《World Journal of Gastroenterology》 2025年第5期129-132,共4页
Rectal neuroendocrine tumors(r-NETs)are the second most common type of neuroendocrine tumor in the gastrointestinal tract,with an increase in incidence in the last decades.They are low-grade tumors and,given their low... Rectal neuroendocrine tumors(r-NETs)are the second most common type of neuroendocrine tumor in the gastrointestinal tract,with an increase in incidence in the last decades.They are low-grade tumors and,given their low risk of meta-stasis,current guidelines recommend endoscopic resection for small lesions.The GATIS predicting score,proposed by Zeng et al,represents an innovative model designed to predict individualized survival outcomes for patients with r-NETs,analyzing the relationship between clinicopathological features and patient prog-noses.The authors identified tumor grade,T stage,tumor size,age,and progno-stic nutritional index as key prognostic factors,demonstrating that the GATIS Score provides a more accurate prognosis assessment compared to the World Health Organization classification or the tumor-node-metastasis staging system.Nevertheless,further larger prospective studies are necessary,and the scientific community's efforts in this context should be directed toward developing interna-tional multicentric prospective studies,with the ultimate aim of accurately de-fining and understanding the behavior of these conditions. 展开更多
关键词 Rectal neuroendocrine tumors Prognostic factors GATIS prognostic score CARCINOIDS Survival outcomes
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Occupational Hazard Factors and the Trajectory of Fasting Blood Glucose Changes in Chinese Male Steelworkers Based on Environmental Risk Scores:A Prospective Cohort Study 被引量:1
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作者 Mingxia Zou Wei Du +7 位作者 Qin Kang Yuhao Xia Nuoyun Zhang Liu Feng Feiyue Li Tiancheng Ma Yajing Bao Hongmin Fan 《Biomedical and Environmental Sciences》 2025年第6期666-677,共12页
Objective We aimed to investigate the patterns of fasting blood glucose(FBG)trajectories and analyze the relationship between various occupational hazard factors and FBG trajectories in male steelworkers.Methods The s... Objective We aimed to investigate the patterns of fasting blood glucose(FBG)trajectories and analyze the relationship between various occupational hazard factors and FBG trajectories in male steelworkers.Methods The study cohort included 3,728 workers who met the selection criteria for the Tanggang Occupational Cohort(TGOC)between 2017 and 2022.A group-based trajectory model was used to identify the FBG trajectories.Environmental risk scores(ERS)were constructed using regression coefficients from the occupational hazard model as weights.Univariate and multivariate logistic regression analyses were performed to explore the effects of occupational hazard factors using the ERS on FBG trajectories.Results FBG trajectories were categorized into three groups.An association was observed between high temperature,noise exposure,and FBG trajectory(P<0.05).Using the first quartile group of ERS1 as a reference,the fourth quartile group of ERS1 had an increased risk of medium and high FBG by 1.90and 2.21 times,respectively(odds ratio[OR]=1.90,95%confidence interval[CI]:1.17–3.10;OR=2.21,95%CI:1.09–4.45).Conclusion An association was observed between occupational hazards based on ERS and FBG trajectories.The risk of FBG trajectory levels increase with an increase in ERS. 展开更多
关键词 Fasting blood glucose Occupational hazards Group-based trajectory modeling Environmental risk scores Steelworkers
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SCORE项目下乡村农企安全生产管理的优化路径
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作者 兰晋睿 陈荣 《农场经济管理》 2025年第8期55-57,共3页
乡村农企作为中小型企业,由于管理经验不足,存在制定的安全管理制度标准过高、重生产轻安全的安全生产管理虚化和理想化的问题,还缺少与当地员工有效沟通的机制,这些管理缺陷正在侵蚀企业安全基础与发展潜力。安全是发展的保障,发展是... 乡村农企作为中小型企业,由于管理经验不足,存在制定的安全管理制度标准过高、重生产轻安全的安全生产管理虚化和理想化的问题,还缺少与当地员工有效沟通的机制,这些管理缺陷正在侵蚀企业安全基础与发展潜力。安全是发展的保障,发展是安全的目的。乡村农企想要助力乡村振兴就要解决安全这一管理问题。通过引进SCORE项目,一是规范乡村农企的安全生产管理,制定符合实际的标准;二是构建扁平化的安全生产管理模式,增进上下级之间的交流沟通,弥合管理层与员工的鸿沟,实现以安全促发展,以安全铸质量,助推高质量乡村振兴。 展开更多
关键词 SCORE项目 乡村农企 安全生产管理
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Effect of hospital-community-home collaborative health management on symptoms,cognition,anxiety,and depression in high-risk individuals for stroke 被引量:1
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作者 Jing Wang Chen-Xi Zhao +5 位作者 Jin Tian Yan-Ru Li Kai-Fang Ma Rui Du Meng-Kun Li Rui Hu 《World Journal of Psychiatry》 2025年第3期78-87,共10页
BACKGROUND Effective health management for high-risk stroke populations is essential.The hospital-community-home(HCH)collaborative health management(CHM)model leverages resources from hospitals,communities,and familie... BACKGROUND Effective health management for high-risk stroke populations is essential.The hospital-community-home(HCH)collaborative health management(CHM)model leverages resources from hospitals,communities,and families.By integrating patient information across these three domains,it facilitates the delivery of tailored guidance,health risk assessments,and three-in-one health education.AIM To explore the effects of the HCH-CHM model on stroke risk reduction in highrisk populations.METHODS In total,110 high-risk stroke patients screened in the community from January 2019 to January 2023 were enrolled,with 52 patients in the control group receiving routine health education and 58 in the observation group receiving HCH-CHM model interventions based on routine health education.Stroke awareness scores,health behavior levels,medication adherence,blood pressure,serum biochemical markers(systolic/diastolic blood pressure,total cholesterol,and triglyceride),and psychological measures(self-rating anxiety/depression scale)were evaluated and compared between groups.RESULTS The observation group showed statistically significant improvements in stroke awareness scores and health behavior levels compared to the control group(P<0.05),with notable enhancements in lifestyle and dietary habits(P<0.05)and reductions in postintervention systolic blood pressure,diastolic blood pressure,total cholesterol,triglyceride,self-rating anxiety scale,and self-rating depression scale scores(P<0.05).CONCLUSION The HCH-CHM model had a significant positive effect on high-risk stroke populations,effectively increasing disease awareness,improving health behavior and medication adherence,and appropriately ameliorating blood pressure,serum biochemical marker levels,and negative psychological symptoms. 展开更多
关键词 Hospital-community-home-collaborative health management model High-risk populations for stroke Stroke awareness score Health behavior level Hospital-community-home
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耦合多变量筛选和多层LSTM的短期径流预测研究
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作者 田伟 殷兆凯 +2 位作者 董义阳 黄迪 刘青 《水力发电》 2025年第3期22-27,118,共7页
径流预测影响因子筛选是流域来水预报研究过程中的关键环节。构建时序过程较复杂的水库短期径流预测模型时,能够输入模型的影响因子种类繁多,为了减少输入数据集维度,验证新的关键影响因子,以短期水库径流预测作为研究对象,建立不同尺... 径流预测影响因子筛选是流域来水预报研究过程中的关键环节。构建时序过程较复杂的水库短期径流预测模型时,能够输入模型的影响因子种类繁多,为了减少输入数据集维度,验证新的关键影响因子,以短期水库径流预测作为研究对象,建立不同尺度数据集的长短时记忆(LSTM)神经网络进行模型率定;再引入Fisher Score算法和熵权-TOPSIS法从16个相关水文气象、水库调度、发电调度等类型的常规影响因子中筛选出7个关键影响因子;然后以RMSE(均方根误差)为精度指标对3种LSTM模型的超参数进行优化;最后将各优化筛选后的参数、影响因子叠加到多层LSTM模型中对新的关键影响因子进行流量预测验证。研究发现,筛选影响因子后的LSTM模型率定效果更好,且新提出的上游水库发电计划执行偏差率这一影响因子能够进一步提升水库径流预测精度。 展开更多
关键词 长短时记忆 径流预测 Fisher Score算法 水库调度 发电计划执行偏差率 关键影响因子
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Medical Diagnosis Based on Multi-Attribute Group Decision-Making Using Extension Fuzzy Sets,Aggregation Operators and Basic Uncertainty Information Granule
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作者 Anastasios Dounis Ioannis Palaiothodoros Anna Panagiotou 《Computer Modeling in Engineering & Sciences》 SCIE EI 2025年第1期759-811,共53页
Accurate medical diagnosis,which involves identifying diseases based on patient symptoms,is often hindered by uncertainties in data interpretation and retrieval.Advanced fuzzy set theories have emerged as effective to... Accurate medical diagnosis,which involves identifying diseases based on patient symptoms,is often hindered by uncertainties in data interpretation and retrieval.Advanced fuzzy set theories have emerged as effective tools to address these challenges.In this paper,new mathematical approaches for handling uncertainty in medical diagnosis are introduced using q-rung orthopair fuzzy sets(q-ROFS)and interval-valued q-rung orthopair fuzzy sets(IVq-ROFS).Three aggregation operators are proposed in our methodologies:the q-ROF weighted averaging(q-ROFWA),the q-ROF weighted geometric(q-ROFWG),and the q-ROF weighted neutrality averaging(qROFWNA),which enhance decision-making under uncertainty.These operators are paired with ranking methods such as the similarity measure,score function,and inverse score function to improve the accuracy of disease identification.Additionally,the impact of varying q-rung values is explored through a sensitivity analysis,extending the analysis beyond the typical maximum value of 3.The Basic Uncertain Information(BUI)method is employed to simulate expert opinions,and aggregation operators are used to combine these opinions in a group decisionmaking context.Our results provide a comprehensive comparison of methodologies,highlighting their strengths and limitations in diagnosing diseases based on uncertain patient data. 展开更多
关键词 Medical diagnosis multi-attribute group decision-making(MAGDM) q-ROFS IVq-ROFS BUI aggregation operators similarity measures inverse score function
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Earthquake Nowcasting方法在云南地区的应用研究
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作者 张欣乐 缪淼 +2 位作者 韩鹏 王蕤 常莹 《地球物理学报》 北大核心 2025年第8期3149-3161,共13页
在过去的10年中,基于统计模型的Nowcasting方法被引入地震危险性评估工作中,形成了一种新的评价方法:Earthquake Nowcasting.该方法计算简便,可以快速给出对应时间点的地震危险性,目前已在全世界多个地震频发地区开展应用.为了探索该方... 在过去的10年中,基于统计模型的Nowcasting方法被引入地震危险性评估工作中,形成了一种新的评价方法:Earthquake Nowcasting.该方法计算简便,可以快速给出对应时间点的地震危险性,目前已在全世界多个地震频发地区开展应用.为了探索该方法在中国地震科学实验场的适用性,本文将Earthquake Nowcasting应用于云南地区,基于高频的“小地震”数目,定义“自然周期”并构建地震复发模型,估算自上一次破坏性地震发生至今该地区的应力累积水平,实现大地震发震风险的定量评估.结果表明:(1)2021漾濞M_(S)6.4地震前,震中所在区域有较高的大地震风险;(2)云南省西北部、东北部、南部以及中部的城市和地区存在较高的破坏性地震可能性,后续地震事件与预测结果具有较好一致性;(3)震级相对较高的前震可能会影响主震的危险性评价.因此,Earthquake Nowcasting具有一定的使用价值,可为云南地区的地震危险性评价工作提供参考,但因Earthquake Nowcasting方法未考虑地震的丛集性特征,在实际使用时还必须结合前震、余震的发震规律才能给出更科学、准确的地震危险性评价. 展开更多
关键词 Earthquake Nowcasting 云南省 自然周期 Earthquake potential score
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基于分层隐马尔科夫模型的刀具磨损状态监测
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作者 梁东鹏 袁德志 朱锟鹏 《组合机床与自动化加工技术》 北大核心 2025年第1期180-184,189,共6页
针对在以往的刀具磨损状态监测中,磨损状态的错误识别现象往往出现在磨损状态的衔接区这一问题,提出了一种基于分层隐马尔科夫模型(hierarchical hidden markov model,HHMM)的刀具磨损状态监测方法。首先,采用力信号和振动信号作为监测... 针对在以往的刀具磨损状态监测中,磨损状态的错误识别现象往往出现在磨损状态的衔接区这一问题,提出了一种基于分层隐马尔科夫模型(hierarchical hidden markov model,HHMM)的刀具磨损状态监测方法。首先,采用力信号和振动信号作为监测信号,提取时域、频域和时频域特征;其次,通过刀具磨损物理模型对刀具磨损阶段进行划分,提高模型的物理可解释性;然后,采用Fisher Score(FS)特征选择方法筛选出刀具不同磨损状态的敏感特征,构建不同磨损状态的敏感特征集;最后,使用不同磨损状态的敏感特征集训练HHMM,建立分类模型库,从而实现刀具磨损状态监测。实验结果表明,所提模型可以有效地提高刀具磨损状态的识别率,准确率为98.41%,综合查准率和查全率的Macro-F1评价指标为98.44%。 展开更多
关键词 Fisher Score 特征选择 分层隐马尔科夫模型 刀具磨损状态监测
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Construction of CD8^(+)T cell-associated Risk Model in Hepatocellular Carcinoma Based on Bulk and Single-cell RNA-seq Data
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作者 ZHANG Xin-Tong ZHU Jian-Jun +10 位作者 WU Jin WU Hao LU Fan ZHANG Wen-Tao CHANG Jing-Jia TANG Ting OU Zhi-Gao JIA Feng-Feng LI Li YU Peng-Fei LIU Ming 《中国生物化学与分子生物学报》 北大核心 2025年第10期1511-1528,共18页
Hepatocellular carcinoma(HCC),which is essentially primary liver cancer,is closely related to CD8^(+)T cell immune infiltration and immune suppression.We constructed a CD8^(+)T cells related risk score model to predic... Hepatocellular carcinoma(HCC),which is essentially primary liver cancer,is closely related to CD8^(+)T cell immune infiltration and immune suppression.We constructed a CD8^(+)T cells related risk score model to predict the prognosis of HCC patients and provided therapeutic guidance based on the risk score.Using integrated bulk RNA sequencing(RNA-seq)and single-cell RNA sequencing(scRNA-seq)datasets,we identified stable CD8^(+)T cell signatures.Based on these signatures,a 3-gene risk score model,comprised of KLRB1,RGS 2,and TNFRSF1B was constructed.The risk score model was well validated through an independent external validation cohort.We divided patients into high-risk and low-risk groups according to the risk score and compared the differences in immune microenvironment between these two groups.Compared with low-risk patients,high-risk patients have higher M2-type macrophage content(P<0.0001)and lower CD8^(+)T cells infiltration(P<0.0001).High-risk patients predict worse response to immunotherapy treatment than low-risk patients(P<0.01).Drug sensitivity analysis shows that PI3K-β inhibitor AZD6482 and TGFβRII inhibitor SB505124 may be suitable therapies for high-risk patients,while the IGF-1R inhibitor BMS-754807 or the novel pyrimidine-based anti-tumor metabolic drug Gemcitabine could be potential therapeutic choices for low-risk patients.Moreover,expression of these 3-gene model was verified by immunohistochemistry.In summary,the establishment and validation of a CD8^(+)T cell-derived risk model can more accurately predict the prognosis of HCC patients and guide the construction of personalized treatment plans. 展开更多
关键词 hepatocellular carcinoma(HCC) CD8^(+)T cell risk scoring model tumor immunity drug sensitivity
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Comparison of different severity scores in correlating hemoglobin levels with the severity of hepatic decompensation: An observational study
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作者 Himayat Ullah Sarwat Huma +13 位作者 Ghulam Yasin Muhammad Ashraf Nafisa Tahir Qazi Tahir Uddin Hossam Shabana Mostafa A R Hussein Abdulrahman Shalaby Mohammad Mossaad Alsayyad Ashraf Said Ali Farahat Hani Ismail Hamed Hazem Sayed Ahmed Ayoub Mohammed S Imam Essam Elmahdi 《World Journal of Hepatology》 2025年第1期55-63,共9页
BACKGROUND Chronic liver disease is a growing global health problem,leading to hepatic decompensation characterized by an array of clinical and biochemical complic-ations.Several scoring systems have been introduced i... BACKGROUND Chronic liver disease is a growing global health problem,leading to hepatic decompensation characterized by an array of clinical and biochemical complic-ations.Several scoring systems have been introduced in assessing the severity of hepatic decompensation with the most frequent ones are Child-Pugh score,model of end-stage liver disease(MELD)score,and MELD-Na score.Anemia is frequently observed in cirrhotic patients and is linked to worsened clinical outcomes.Although studies have explored anemia in liver disease,few have investigated the correlation of hemoglobin level with the severity of hepatic decompensation.AIM To determine the relationship between hemoglobin levels and the severity of decompensated liver disease and comparing the strength of this correlation using the Child-Pugh,MELD,and MELD-Na scores.METHODS This cross-sectional study was conducted at a tertiary care hospital with 652 decompensated liver disease patients enrolled in the study.Data was collected on demographics,clinical history,and laboratory findings,including hemoglobin levels,bilirubin,albumin,prothrombin time(international normalized ratio),sodium,and creatinine.The Child-Pugh,MELD,and MELD-Na scores were calculated.Statistical analysis was performed using Statistical Package for the Social Sciences version 26,and correlations between hemoglobin levels and severity scores were assessed using Spearman's correlation coefficient.RESULTS The study included 405 males(62.1%)and 247 females(37.9%)with an average age of 58.8 years.Significant inverse correlations were found between hemoglobin levels and Child-Pugh,MELD,and MELD-Na scores(P<0.01),with the MELD scoring system being the strongest correlator among all.One-way analysis of variance revealed significant differences in hemoglobin levels across the severity groups of each scoring system(P=0.001).Tukey's post hoc analysis confirmed significant internal differences among each severity group.CONCLUSION Understanding the correlation between hemoglobin and liver disease severity can improve patient management by offering insights into prognosis and guiding treatment decisions. 展开更多
关键词 Hepatic decompensation Hemoglobin level Chronic liver disease Child Turcotte Pugh score Model of end-stage liver disease score Model of end-stage liver disease-Na score
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Clinical prognostic scores for dengue fever: A systematic review
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作者 Keerthana Thangaraja Jun Yi Jonathan Heng +2 位作者 Gayathri Basker Shu Ting Chong Kay Choong See 《World Journal of Meta-Analysis》 2025年第4期9-23,共15页
BACKGROUND Clinical predictors of dengue fever are crucial for guiding timely management and avoiding life-threatening complications.While prognostic scores are available,a systematic evaluation of these tools is lack... BACKGROUND Clinical predictors of dengue fever are crucial for guiding timely management and avoiding life-threatening complications.While prognostic scores are available,a systematic evaluation of these tools is lacking.AIM To evaluate the performance and accuracy of various proposed dengue clinical prognostic scores.METHODS Three databases,PubMed,EMBASE and Cochrane,were searched for peer-reviewed studies published from inception to 4 September 2023.Studies either developing or validating a prognostic model relevant to dengue fever were included.A total of 29 studies(n=17910)were included.RESULTS Most commonly studied outcomes were severe dengue(15 models)and mortality(8 models).For the paediatric population,Bedside Dengue Severity Score by Gayathri et al(specificity=0.98)and the nomogram model by Nguyen et al(sensitivity=0.87)performed better.For the adult population,the most specific model was reported by Leo et al(specificity=0.98).The most sensitive score is shared between Warning Signs for Severe Dengue as reported by Leo et al and Model 2 by Lee et al(sensitivity=1.00).CONCLUSION While several models demonstrated precision and reliability in predicting severe dengue and mortality,broader application across diverse geographic settings is needed to assess their external validity. 展开更多
关键词 DENGUE Severe dengue Systematic review Prognostic scores Clinical prognostic scores
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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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