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Worst-Case Finish Time Analysis for DAG-Based Applications in the Presence of Transient Faults

Journal of Computer Science & Technology 2016年第2期31卷 267-283页

作者： xiao-tong cui Kai-Jie Wu tong-Quan Wei Hsing-Mean Sha Key Laboratory of Dependable Service Computing in Cyber Physical Society Chongqing University Chongqing 400014 China College of Computer Science Chongqing University Chongqing 400044 China Department of Computer Science and Technology East China Normal University Shanghai 200241 China

Tasks in hard real-time systems are required to meet preset deadlines, even in the presence of transient faults and hence the analysis of worst-case finish time （WCFT） must consider the extra time incurred by re-executing tasks that were faulty. Existing solutions can only estimate WCFT and usually result in significant under- or over-estimation. In this work, we conclude that a sufficient and necessary condition of a task set experiencing its WCFT is that its critical task incurs all expected transient faults. A method is presented to identify the critical task and WCFT in O（IVI ＋ IEI） where IVI and IEI are the number of tasks and dependencies between tasks, respectively. This method finds its application in testing the feasibility of directed acyclic graph （DAG） based task sets scheduled in a wide variety of fault-prone multi-processor systems, where the processors could be either homogeneous or heterogeneous, DVS-capable or DVS-incapable, etc. The common practices, which require the same time complexity as the proposed critical-task method, could either underestimate the worst case by up to 25%, or overestimate by 13%. Based on the proposed critical-task method, a simulated-annealing scheduling algorithm is developed to find the energy efficient fault-tolerant schedule for a given DAG task set. Experimental results show that the proposed critical-task method wins over a common practice by up to 40% in terms of energy saving.

关键词： fault tolerance worst-case analysis simulated annealing energy conservation dynamic voltage scaling (DVS)

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Effect of high-or low-speed fluctuations on the small-scale bursting events in an active control experiment

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Chinese Physics B 2021年第1期30卷 319-327页

作者： xiao-tong cui Nan Jiang Zhan-Qi Tang Department of Mechanics Tianjin UniversityTianjin 300354China Tianjin Key Laboratory of Modern Engineering Mechanics Tianjin 300354China

Active control of a fully developed turbulence boundary layer(TBL) over a flat plate has been investigated with a statistical view. The piezoelectric(PZT) oscillator is employed to produce periodic input into the inner region of the TBL.A wall probe is fixed upstream of the oscillator to identify the high-or low-speed fluctuations as the detecting ***, the impact of the detecting signals on the small-scale bursting process is investigated based on the data acquired by the traversing probe downstream of the oscillator. The results indicate that the small-scale bursting intensity is restrained more apparently at high-speed detecting fluctuations but less impacted at low-speed detecting fluctuations. Furthermore, the perturbed-scale fluctuations arrange the small-scale bursting process in the near-wall region. The detecting signals have an obvious impact on this arrangement, especially the high-intensity regions of the small-scale bursting events: the vibration enhances the intensity at high-speed detecting signals but weakens it at low-speed detecting signals in these regions, which gives a direct evidence on how detecting signals interfering the small-scale bursting process.

关键词： turbulent boundary layer active control discrete wavelet decomposition small-scale bursting process

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Active control of wall-bounded turbulence for drag reduction with piezoelectric oscillators

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Chinese Physics B 2018年第7期27卷 397-403页

作者： Jian-Xia Bai Nan Jiang xiao-Bo Zheng Zhan-Qi Tang Kang-Jun Wang xiao-tong cui Department of Mechanics School of Mechanical EngineeringTianjin UniversityTianjin 300350China Deptartment of Mathematics Tianjin University Renal CollegeTianfin 301636China Tianjin Key Laboratory of Modern Engineering Mechanics Tianjin 300072China

An experimental investigation was performed for active control of coherent structure bursting in the near-wall region of the turbulent boundary layer. By means of synchronous and asynchronous vibrations with double piezoelectric vibrators, the influence of periodic vibration of the double piezoelectric vibrators on the mean velocity profile, drag reduction rate, and coherent structure bursting is analyzed at Reo = 2766. The case with 100 V/160 Hz-ASYN is superior to other conditions in the experiment and a relative drag reduction rate of 18.54% is exciting. Asynchronous vibration is more effective than synchronous vibration in drag reduction at the same voltage and frequency. In all controlled cases, coherent structures at large scales are regulated while the small-scale structures are stimulated. The fluctuating velocity increases significantly. A periodic regulating effect on the coherent structure can be seen in the ASYN control conditions at the frequency of 160 Hz.

关键词： turbulent boundary layer active control double piezoelectric vibrators

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Epidemiology of pterygium in aged rural population of Beijing, China

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Chinese Medical Journal 2010年第13期123卷 1699-1701页

作者： LIANG Qing-feng XU Liang JIN Xiu-ying YOU Qi-sheng YANG xiao-hui and cui tong-tong Beijing Institute of Ophthalmology Beijing tongren Eye Center Beijing Tongren Hospital Capital Medical University Beijing 100005 China

Background Pterygium is a common ophthalmic disease and an important public health problem. It may be affected by many factors such as age, gender, ultraviolet radiation exposure, and time spent outdoors. This study aimed to investigate the prevalence of pterygium and evaluate the risk factors for the development of pterygium in the aged rural population of Beijing. Methods The investigation is a population-based cross-sectional study. Participants from 198 villages of 13 suburban districts, aged 55-85 years old, were invited to complete a medical record, and 37 067 individuals were taken external ocular and fundus photos at Beijing ocular disease survey in 2008-2009. The information was uploaded by Internet and diagnosed with stages and grades by ophthalmological specialists. The prevalence, stages and grades of pterygia were observed. Results Of the 37 067 individuals, 1395 （3.76%） had pterygium. There was a significantly higher prevalence in male （5.13%） than in female （3.17%, P=0.000）. The prevelence rate increased obviously with ages （X2=7.939, P=0.019） in rural Beijing. The average prevalence of 5.91% in Daxing and Fangshan districts with low latitude and low precipitation was significantly higher than that in Miyun and Huairou districts with high latitude and deep precipitation （3.17%, P=-0.000）. The majority of the pterygia （43.5%） were in active stage and 46.5% pterygia involved pupil area corneas. Conclusions There is a statistically significant association between latitude and precipitation of habitation region and pterygium formation. Solar radiation, especially ultraviolet exposure represents a significant environment hazard to pterygium development.

关键词： pterygium prevalence Beijing, peasant

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Prospects of elafibranor in treating alcohol-associated liver diseases

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World Journal of Gastroenterology 2025年第2期31卷 132-137页

作者： Wei-tong cui Hua-Ru Xue Dian-Fang Wei xiao-Yu Feng Kai Wang School of Basic Medicine Qilu Medical UniversityZibo 255300Shandong ProvinceChina School of Medical Imaging Qilu Medical UniversityZibo 255300Shandong ProvinceChina

Alcohol-related liver disease(ALD),which is induced by excessive alcohol con-sumption,is a leading cause of liver-related morbidity and *** pa-tients exhibit a spectrum of liver injuries,including hepatic steatosis,inflam-mation,and fibrosis,similar to symptoms of nonalcohol-associated liver diseases such as primary biliary cholangitis,metabolic dysfunction-associated steatotic liver disease,and nonalcoholic *** has been approved for the treatment of primary biliary cholangitis and has been shown to improve symptoms in both animal models and in vitro cell models of metabolic dysfunc-tion-associated steatotic liver disease and nonalcoholic ***,the efficacy of elafibranor in treating ALD remains *** this article,we comment on the recent publication by Koizumi et al that evaluated the effects of elafibranor on liver fibrosis and gut barrier function in an ALD mouse *** findings indicate the potential of elafibranor for ALD treatment,but further experimental investigations and clinical trials are warranted.

关键词： Elafibranor Alcohol-associated liver diseases Peroxisome proliferator-activated receptor Lipid Apoptosis Steatosis Inflammation Fibrosis

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A randomized, multicenter controlled trial to compare the efficacy of recombinant human parathyroid hormone （1-34） with elcatonin in postmenopausal women with osteoporosis in China

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Chinese Medical Journal 2009年第24期122卷 2933-2938页

作者： ZHANG Xiu-zhen WANG Bo YANG Jun XUAN Miao SONG Li-ge LI Hong GUO xiao-hui LU xiao-feng XUE Qing-yun YANG Gang-yi JI Qiu-he SHEN Jie LIU Zhi-min LI Cheng-jiang WU Tian-feng tong xiao-cui JIA Yuan Department of Endocrinology Tongji Hospital of Tongji University Shanghai 200065 China Department of Endocrinology Peking University First Hospital Beijing 100034 China Department of Endocrinology General Hospital of the Chinese People's Liberation Army Beijing Military Region Beijing 100700 China Department of Endocrinology Beijing Hospital Beijing 100730 China Department of Endocrinology Second Affiliated Hospital of Chongqing Medical University Chongqing 400010 China Department of Endocrinology Xijing Hospital of Fourth Military Medical University Xi'an Shaanxi 710032 China Department of Endocrinology Nanfang Hospital of Nanfang Medical University Guangzhou Guangdong 510515 China Department of Endocrinology Changzheng Hospital Second Military Medical University Shanghai 200003 China Department of Endocrinology First Affiliated Hospital of Zhejiang University Hangzhou Zhejiang 310003 China Department of Endocrinology Zhejiang Hospital Hangzhou Zhejiang 310013 China

Background Recombinant human parathyroid hormone （1-34）（rhPTH （1-34）） given by injection is a new seventh class drug of biological products, which is prepared by adopting gene recombination technique, rhPTH （1-34） is mainly used to treat osteoporosis, especially for postmenopausal women. This study compared the clinical efficacy and safety of rhPTH （1-34） with elcatonin for treating postmenopausal women with osteoporosis in 11 urban areas of China. Methods Two hundred and five women with osteoporosis were enrolled in a 6-month, multicenter, randomized, controlled study. They were randomized to receive either rhPTH （1-34） 20 ug （200 U） daily or elcatonin 20 U weekly. Lumbar spine （L1-4） and femoral neck bone mineral density （BMD）, as well as biochemical markers of bone turnover were measured. Adverse events were recorded. Results rhPTH （1-34） increased lumbar BMD significantly more than did elcatonin at 3 months and 6 months （2.38% vs 0.59%, P 〈0.05; 5.51% vs 1.55%, P 〈0.01）, but there were no significant increases of BMD in these two groups at femoral neck. There were larger mean increases in bone markers in the rhPTH （1-34） group than in the elcatonin group at 3 months and 6 months （serum bone-specific alkaline phosphatase （BSAP） 36.79% vs 0.31%; 92.42% vs -0.17%; urinary N-telopeptide/creatinine （NTX/Cr） 48.91% vs -5.32%; 68.82% vs -10.86%）. Both treatments were well tolerated and there were no significant differences detected between the two groups in the proportion of any adverse events and any serious adverse events （67.0% vs 59.0%; 0 vs 0）. Conclusions rhPTH （1-34） has more positive effects on bone formation, as shown by the larger increments of lumbar BMD and bone formation markers, than elcatonin, with only mild adverse events and no significant change in the liver, kidney or hematological indices.

关键词： recombinant human parathyroid hormone elcatonin osteoporosis bone mineral density

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Lipid levels and insulin resistance markers in patients with colorectal cancer:Propensity score matching analysis

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 130-142页

作者： Ren-Hao Hu Dong-Yi Yan Ke-Hui Zhang Di Zhang Xi-Mao cui xiao-Hua Jiang Shun Zhang Department of Gastrointestinal Surgery Shanghai East HospitalSchool of MedicineTongji UniversityShanghai 200120China School of Medicine Tongji UniversityShanghai 200092China Department of Emergency Medicine Shanghai East HospitalSchool of MedicineTongji UniversityShanghai 200120China

BACKGROUND Colorectal cancer(CRC)is a prevalent malignant neoplasm characterized by subtle early *** To investigate the correlation among serum lipid profiles,the triglyceride-glucose(TyG)index,and the atherosclerotic index(AI)in patients with ***,it explored the clinical diagnostic utility of combining serum lipids with cancer antigens in the context of *** A retrospective analysis encompassed 277 patients with CRC and 1034 healthy *** Following propensity score matching,patients with CRC exhibited significantly reduced levels of serum triglyceride(TG),total cholesterol(TC),high-density lipoprotein cholesterol,and low-density lipoprotein cholesterol(LDL-C),as well as a diminished TyG ***,they displayed elevated AI levels compared to their healthy *** in advanced stages exhibited lower serum levels of TG,TC,and LDL-C compared to those in early *** with positive lymph node metastasis demonstrated reduced levels of TG,LDL-C,and the TyG *** operating characteristic analysis revealed that the combination of the TyG index,carcinoembryonic antigen,and carbohydrate antigen 19-9 yielded the highest positive prediction rate for CRC at 75.3%.CONCLUSION Preoperative serum lipid profiles exhibit a robust association with patients with *** concurrent assessment of multiple serum lipids and cancer antigens effectively enhances the diagnostic accuracy for CRC.

关键词： Colorectal cancer Serum lipids Triglyceride-glucose index Atherosclerotic index Diagnostic marker

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杠柳叶的化学成分及其粗提物杀虫活性研究

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西北林学院学报 2007年第2期22卷 142-145页

作者：陈玲马养民史清华童小翠姜少娟西北农林科技大学生命科学学院陕西杨陵712100 西北农林科技大学林学院陕西杨陵712100

通过对杠柳叶的化学成分系统预试,检测出杠柳叶中存在酚性成分、有机酸、皂苷、黄酮类及其苷类、植物甾醇、三萜类化合物。同时以生物活性跟踪法测定了杠柳叶萃取物对三龄粘虫和菊小长管蚜的杀虫活性。结果表明,乙酸乙酯萃取物的活性最... 详细信息

通过对杠柳叶的化学成分系统预试,检测出杠柳叶中存在酚性成分、有机酸、皂苷、黄酮类及其苷类、植物甾醇、三萜类化合物。同时以生物活性跟踪法测定了杠柳叶萃取物对三龄粘虫和菊小长管蚜的杀虫活性。结果表明,乙酸乙酯萃取物的活性最高。乙酸乙酯萃取物经硅胶柱层析分离后F3组分的触杀活性最高,72 h对粘虫触杀LC50是2.903 2 ***-1,24 h对蚜虫触杀的LC50为0.526 3 ***-1。

关键词：杠柳系统预试提取物杀虫活性

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立足生态资源优势,大力发展水稻制繁种基地

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中国稻米 2014年第1期20卷 106-107页

作者：尹设飞童晓翠王仁杯浙江省遂昌县农业局浙江遂昌323300 浙江省农业厅浙江杭州310021

在国家要求加快推进现代种业发展的形势下,地处浙西南山区的遂昌,利用当地生态资源,以注重强化组织领导、注重管理机制创新、注重科技攻关、注重质量监管、注重扶持激励等为举措,合力建设水稻制繁种基地县。

关键词：水稻生态资源制繁种基地遂昌

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Research status and prospects of the fractal analysis of metal material surfaces and interfaces

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 20-38页

作者： Qinjin Dai Xuefeng Liu Xin Ma Shaojie Tian Qinghe cui Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation University of Science and Technology BeijingBeijing 100083China Laboratory for Advanced Materials Processing of Ministry of Education University of Science and Technology BeijingBeijing 100083China School of Mechanical and Electrical Engineering Xinjiang Institute of EngineeringUrumqi 830023China

As a mathematical analysis method,fractal analysis can be used to quantitatively describe irregular shapes with self-similar or self-affine *** analysis has been used to characterize the shapes of metal materials at various scales and *** methods make it difficult to quantitatively describe the relationship between the regular characteristics and properties of metal material surfaces and ***,fractal analysis can be used to quantitatively describe the shape characteristics of metal materials and to establish the quantitative relationships between the shape characteristics and various properties of metal *** the perspective of two-dimensional planes and three-dimensional curved surfaces,this paper reviews the current research status of the fractal analysis of metal precipitate interfaces,metal grain boundary interfaces,metal-deposited film surfaces,metal fracture surfaces,metal machined surfaces,and metal wear *** relationship between the fractal dimensions and properties of metal material surfaces and interfaces is *** from three perspectives of fractal analysis,namely,research scope,image acquisition methods,and calculation methods,this paper identifies the direction of research on fractal analysis of metal material surfaces and interfaces that need to be *** is believed that revealing the deep influence mechanism between the fractal dimensions and properties of metal material surfaces and interfaces will be the key research direction of the fractal analysis of metal materials in the future.

关键词： metal material surfaces and interfaces fractal analysis fractal dimension homogeneity

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