The order of computational complexity of all bounded linear functional ap proximation problem is determined for the generalized Sobolev class Wp?（Id）, Nikolskii class H|∞k（Id） in the worst （deterministic）, stoc...The order of computational complexity of all bounded linear functional ap proximation problem is determined for the generalized Sobolev class Wp?（Id）, Nikolskii class H|∞k（Id） in the worst （deterministic）, stochastic and average case setting, from which it is concluded that the bounded linear functional approximation problem for the classes Wp?（Id） and H∞k（Id） is intractable in worst case setting, but is tractable with respect to stochastic and average case setting.展开更多
The purpose of this article is to investigate (s, t)-weak tractability of multivariate linear problems in the average case set ting. The considered algorithms use finitely many evaluations of arbitrary linear function...The purpose of this article is to investigate (s, t)-weak tractability of multivariate linear problems in the average case set ting. The considered algorithms use finitely many evaluations of arbitrary linear functionals. Generally, we obtained matching necessary and sufficient conditions for (s,t)-weak tractability in terms of the corresponding non-increasing sequence of eigenvalues. Specifically, we discussed (s, t)-weak tractability of linear tensor product problems and obtained necessary and sufficient conditions in terms of the corresponding one-dimensional problem. As an example of applications, we discussed also (s,t)-weak tractability of a multivariate approximation problem.展开更多
BACKGROUND Sotos syndrome is an autosomal dominant disorder,whereas attention-deficit/hyperactivity disorder(ADHD)is a neurodevelopmental condition.This report aimed to summarize the clinical and genetic features of a...BACKGROUND Sotos syndrome is an autosomal dominant disorder,whereas attention-deficit/hyperactivity disorder(ADHD)is a neurodevelopmental condition.This report aimed to summarize the clinical and genetic features of a pediatric case of Soros syndrome and ADHD in a child exhibiting precocious puberty.CASE SUMMARY The patient presented with accelerated growth and advanced skeletal maturation;however,she lacked any distinct facial characteristics related to specific genetic disorders.Genetic analyses revealed a paternally inherited heterozygous synonymous mutation[c.4605C>T(p.Arg1535Arg)].Functional analyses suggested that this mutation may disrupt splicing,and bioinformatics analyses predicted that this mutation was likely pathogenic.After an initial diagnosis of Sotos syndrome,the patient was diagnosed with ADHD during the follow-up period at the age of 8 years and 7 months.CONCLUSION The potential for comorbid ADHD in Sotos syndrome patients should be considered to avoid the risk of a missed diagnosis.展开更多
Fatal bleeding in patients with tracheostomy is an uncommon incident, in the order of 0.1% to 1% of cases. It is secondary in 70% of cases to the innominate artery fistula in the tracheal lumen. The fistula is general...Fatal bleeding in patients with tracheostomy is an uncommon incident, in the order of 0.1% to 1% of cases. It is secondary in 70% of cases to the innominate artery fistula in the tracheal lumen. The fistula is generally created after the necrosis of tracheal rings. The incriminated factors are the type of cannula used, the site of tracheal opening below the 3rd tracheal ring, tracheal infections and the proximity of the innominate artery to the tracheal axis. The outcome of this incident is fatal in most cases. We report the case of a 59-year-old patient with a tracheostomy on the 11th day of his admission to intensive care for severe head trauma secondary to a road accident. On the 22nd day of his admission, the occurrence of a cataclysmic and fatal haemorrhage through the tracheostomy tube evoked an arterio-tracheal fistula of the innominate artery.展开更多
目的:通过数据挖掘对中医治疗心力衰竭医案进行集外关联解析,对心力衰竭的症状、病机与药物之间的核心关联规则进行挖掘,从中分析中医辨证治疗心力衰竭的经验。方法:在中国知识资源总库、维普中文科技期刊全文数据库、万方数据学术论文...目的:通过数据挖掘对中医治疗心力衰竭医案进行集外关联解析,对心力衰竭的症状、病机与药物之间的核心关联规则进行挖掘,从中分析中医辨证治疗心力衰竭的经验。方法:在中国知识资源总库、维普中文科技期刊全文数据库、万方数据学术论文总库中,检索中医治疗心力衰竭医案类论文,采用Medcase Ver 5.2诊籍数据处理平台,基于频繁模式增长加强关联分析算法,对心力衰竭临床医案进行集外关联解析。结果:共纳入医案406则,患者406人次,971诊次,涉及病机56条,症状123种,药物348种。经集外关联挖掘,产生临床症状与药物集外关联规则31条,病机与药物集外关联规则30条,临床症状与病机集外关联规则31条。结论:中医临床辨治心力衰竭的核心症状为水肿、胸闷、乏力、心悸、纳差、气短、尿少;核心病机中脏腑病位重点为心阳虚、肾阳虚;高关联选药为茯苓、黄芪、丹参、白术、附子等,可采用温心阳、壮肾阳、利水消肿的方法,治疗心阳虚、肾阳虚等较为常见的心力衰竭。展开更多
目的探索以执业能力为导向的导师负责制在骨科实习生培养中的应用效果。方法选取2021年9月—2023年6月2021和2022学年“5+3”一体化的60名本科实习生作为研究对象,将2021学年的实习生作为对照组,2022学年的实习生作为研究组,每组30名。...目的探索以执业能力为导向的导师负责制在骨科实习生培养中的应用效果。方法选取2021年9月—2023年6月2021和2022学年“5+3”一体化的60名本科实习生作为研究对象,将2021学年的实习生作为对照组,2022学年的实习生作为研究组,每组30名。对照组采用标准教学模式培养,研究组采用以执业能力为导向的导师负责制模式培养,培养时间为1个月。比较2组实习生的理论和临床考核成绩、迷你临床演练评估量表(mini-clinical evaluation exercise,Mini-CEX)评分、主观-客观-评价-计划(subject-objective-assessmentplan,SOAP)评分、医患沟通技能评价量表(set elicit give understand end framework,SEGUE)评分。结果2组实习生的客观题和临床技能考核成绩比较,差异无统计学意义(P>0.05);研究组实习生的病例分析题成绩、Mini-CEX评分、SOAP评分和SEGUE评分([41.3±3.5)分、(47.9±7.0)分、(74.4±7.7)分、(20.5±3.2)分]高于对照组[(36.8±6.1)分、(36.0±7.0)分、(62.0±7.1)分、(18.1±3.0)分],差异均有统计学意义(P<0.05)。结论以执业能力为导向的导师负责制能够明显提高骨科实习生的临床诊疗水平,有助于培养出更优秀的医学人才。展开更多
BACKGROUND Aortic dissection(AD)is a life-threatening condition with a high mortality rate without immediate medical attention.Early diagnosis and appropriate treatment are critical in treating patients with AD.In the...BACKGROUND Aortic dissection(AD)is a life-threatening condition with a high mortality rate without immediate medical attention.Early diagnosis and appropriate treatment are critical in treating patients with AD.In the emergency department,patients with AD commonly present with classic symptoms of unanticipated severe chest or back pain.However,it is worth noting that atypical symptoms of AD are easily misdiagnosed.CASE SUMMARY A 51-year-old woman was first diagnosed with scapulohumeral periarthritis due to left shoulder pain.After careful examination of her previous medical history and contrast-enhanced computed tomography angiography,the patient was diagnosed with a new type A AD after chronic type B dissection in the ascending aorta.The patient was successfully treated with surgical replacement of the dissected aortic arch and remains in good health.CONCLUSION New retrograde type A AD after chronic type B dissection is relatively rare.It is worth noting that a physician who has a patient with suspected AD should be vigilant.Both patient medical history and imaging tests are crucial for a more precise diagnosis.展开更多
Machine intelligence,is out of the system by the artificial intelligence shown.It is usually achieved by the average computer intelligence.Rough sets and Information Granules in uncertainty management and soft computi...Machine intelligence,is out of the system by the artificial intelligence shown.It is usually achieved by the average computer intelligence.Rough sets and Information Granules in uncertainty management and soft computing and granular computing is widely used in many fields,such as in protein sequence analysis and biobasis determination,TSM and Web service classification Etc.展开更多
Some new characterizations and immediate explicit expressions of best L(1≤p≤∞) approximation and their deviations by an n-dimensional subspace on a set of n+1 points are given.
This paper investigates the optimal Birkhoff interpolation and Birkhoff numbers of some function spaces in space L∞[-1,1]and weighted spaces Lp,ω[-1,1],1≤p<∞,with w being a continuous integrable weight function...This paper investigates the optimal Birkhoff interpolation and Birkhoff numbers of some function spaces in space L∞[-1,1]and weighted spaces Lp,ω[-1,1],1≤p<∞,with w being a continuous integrable weight function in(-1,1).We proved that the Lagrange interpolation algorithms based on the zeros of some polynomials are optimal.We also show that the Lagrange interpolation algorithms based on the zeros of some polynomials are optimal when the function values of the two endpoints are included in the interpolation systems.展开更多
基金Project supported by the Natural Science Foundation of China(10371009) and Research Fund for the Doctoral Program Higher Education.
文摘The order of computational complexity of all bounded linear functional ap proximation problem is determined for the generalized Sobolev class Wp?（Id）, Nikolskii class H|∞k（Id） in the worst （deterministic）, stochastic and average case setting, from which it is concluded that the bounded linear functional approximation problem for the classes Wp?（Id） and H∞k（Id） is intractable in worst case setting, but is tractable with respect to stochastic and average case setting.
基金supported by the National Natural Science Foundation of China(11471043,11671271)the Beijing Natural Science Foundation(1172004)
文摘The purpose of this article is to investigate (s, t)-weak tractability of multivariate linear problems in the average case set ting. The considered algorithms use finitely many evaluations of arbitrary linear functionals. Generally, we obtained matching necessary and sufficient conditions for (s,t)-weak tractability in terms of the corresponding non-increasing sequence of eigenvalues. Specifically, we discussed (s, t)-weak tractability of linear tensor product problems and obtained necessary and sufficient conditions in terms of the corresponding one-dimensional problem. As an example of applications, we discussed also (s,t)-weak tractability of a multivariate approximation problem.
文摘BACKGROUND Sotos syndrome is an autosomal dominant disorder,whereas attention-deficit/hyperactivity disorder(ADHD)is a neurodevelopmental condition.This report aimed to summarize the clinical and genetic features of a pediatric case of Soros syndrome and ADHD in a child exhibiting precocious puberty.CASE SUMMARY The patient presented with accelerated growth and advanced skeletal maturation;however,she lacked any distinct facial characteristics related to specific genetic disorders.Genetic analyses revealed a paternally inherited heterozygous synonymous mutation[c.4605C>T(p.Arg1535Arg)].Functional analyses suggested that this mutation may disrupt splicing,and bioinformatics analyses predicted that this mutation was likely pathogenic.After an initial diagnosis of Sotos syndrome,the patient was diagnosed with ADHD during the follow-up period at the age of 8 years and 7 months.CONCLUSION The potential for comorbid ADHD in Sotos syndrome patients should be considered to avoid the risk of a missed diagnosis.
文摘Fatal bleeding in patients with tracheostomy is an uncommon incident, in the order of 0.1% to 1% of cases. It is secondary in 70% of cases to the innominate artery fistula in the tracheal lumen. The fistula is generally created after the necrosis of tracheal rings. The incriminated factors are the type of cannula used, the site of tracheal opening below the 3rd tracheal ring, tracheal infections and the proximity of the innominate artery to the tracheal axis. The outcome of this incident is fatal in most cases. We report the case of a 59-year-old patient with a tracheostomy on the 11th day of his admission to intensive care for severe head trauma secondary to a road accident. On the 22nd day of his admission, the occurrence of a cataclysmic and fatal haemorrhage through the tracheostomy tube evoked an arterio-tracheal fistula of the innominate artery.
文摘目的:通过数据挖掘对中医治疗心力衰竭医案进行集外关联解析,对心力衰竭的症状、病机与药物之间的核心关联规则进行挖掘,从中分析中医辨证治疗心力衰竭的经验。方法:在中国知识资源总库、维普中文科技期刊全文数据库、万方数据学术论文总库中,检索中医治疗心力衰竭医案类论文,采用Medcase Ver 5.2诊籍数据处理平台,基于频繁模式增长加强关联分析算法,对心力衰竭临床医案进行集外关联解析。结果:共纳入医案406则,患者406人次,971诊次,涉及病机56条,症状123种,药物348种。经集外关联挖掘,产生临床症状与药物集外关联规则31条,病机与药物集外关联规则30条,临床症状与病机集外关联规则31条。结论:中医临床辨治心力衰竭的核心症状为水肿、胸闷、乏力、心悸、纳差、气短、尿少;核心病机中脏腑病位重点为心阳虚、肾阳虚;高关联选药为茯苓、黄芪、丹参、白术、附子等,可采用温心阳、壮肾阳、利水消肿的方法,治疗心阳虚、肾阳虚等较为常见的心力衰竭。
文摘目的探索以执业能力为导向的导师负责制在骨科实习生培养中的应用效果。方法选取2021年9月—2023年6月2021和2022学年“5+3”一体化的60名本科实习生作为研究对象,将2021学年的实习生作为对照组,2022学年的实习生作为研究组,每组30名。对照组采用标准教学模式培养,研究组采用以执业能力为导向的导师负责制模式培养,培养时间为1个月。比较2组实习生的理论和临床考核成绩、迷你临床演练评估量表(mini-clinical evaluation exercise,Mini-CEX)评分、主观-客观-评价-计划(subject-objective-assessmentplan,SOAP)评分、医患沟通技能评价量表(set elicit give understand end framework,SEGUE)评分。结果2组实习生的客观题和临床技能考核成绩比较,差异无统计学意义(P>0.05);研究组实习生的病例分析题成绩、Mini-CEX评分、SOAP评分和SEGUE评分([41.3±3.5)分、(47.9±7.0)分、(74.4±7.7)分、(20.5±3.2)分]高于对照组[(36.8±6.1)分、(36.0±7.0)分、(62.0±7.1)分、(18.1±3.0)分],差异均有统计学意义(P<0.05)。结论以执业能力为导向的导师负责制能够明显提高骨科实习生的临床诊疗水平,有助于培养出更优秀的医学人才。
文摘BACKGROUND Aortic dissection(AD)is a life-threatening condition with a high mortality rate without immediate medical attention.Early diagnosis and appropriate treatment are critical in treating patients with AD.In the emergency department,patients with AD commonly present with classic symptoms of unanticipated severe chest or back pain.However,it is worth noting that atypical symptoms of AD are easily misdiagnosed.CASE SUMMARY A 51-year-old woman was first diagnosed with scapulohumeral periarthritis due to left shoulder pain.After careful examination of her previous medical history and contrast-enhanced computed tomography angiography,the patient was diagnosed with a new type A AD after chronic type B dissection in the ascending aorta.The patient was successfully treated with surgical replacement of the dissected aortic arch and remains in good health.CONCLUSION New retrograde type A AD after chronic type B dissection is relatively rare.It is worth noting that a physician who has a patient with suspected AD should be vigilant.Both patient medical history and imaging tests are crucial for a more precise diagnosis.
文摘Machine intelligence,is out of the system by the artificial intelligence shown.It is usually achieved by the average computer intelligence.Rough sets and Information Granules in uncertainty management and soft computing and granular computing is widely used in many fields,such as in protein sequence analysis and biobasis determination,TSM and Web service classification Etc.
文摘Some new characterizations and immediate explicit expressions of best L(1≤p≤∞) approximation and their deviations by an n-dimensional subspace on a set of n+1 points are given.
基金supported by National Natural Science Foundation of China(11871006,11671271)。
文摘This paper investigates the optimal Birkhoff interpolation and Birkhoff numbers of some function spaces in space L∞[-1,1]and weighted spaces Lp,ω[-1,1],1≤p<∞,with w being a continuous integrable weight function in(-1,1).We proved that the Lagrange interpolation algorithms based on the zeros of some polynomials are optimal.We also show that the Lagrange interpolation algorithms based on the zeros of some polynomials are optimal when the function values of the two endpoints are included in the interpolation systems.
