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Long-term impact of artificial intelligence on colorectal adenoma detection in high-risk colonoscopy

World Journal of Gastrointestinal Endoscopy 2024年第6期16卷 335-342页

作者： Kenneth W chow Matthew T Bell Nicholas Cumpian Maryanne Amour Ryan H Hsu Viktor E Eysselein Neetika Srivastava Michael W Fleischman Sofiya Reicher Department of Medicine Harbor-UCLA Medical CenterTorranceCA 90502United States Department of Bioengineering Jacobs School of EngineeringUniversity of CaliforniaSan DiegoLa JollaCA 92093United States Department of Gastroenterology Harbor-UCLA Medical CenterTorranceCA 90502United States

BACKGROUND Improved adenoma detection rate(ADR)has been demonstrated with artificial intelligence(AI)-assisted ***,data on the real-world appli-cation of AI and its effect on colorectal cancer(CRC)screening outcomes is *** To analyze the long-term impact of AI on a diverse at-risk patient population undergoing diagnostic colonoscopy for positive CRC screening tests or *** AI software(GI Genius,Medtronic)was implemented into the standard proced-ure protocol in November *** was collected on patient demographics,procedure indication,polyp size,location,and *** screening outcomes were evaluated before and at different intervals after AI introduction with one year of *** We evaluated 1008 colonoscopies(278 pre-AI,255 early post-AI,285 established post-AI,and 190 late post-AI).The ADR was 38.1%pre-AI,42.0%early post-AI(P=0.77),40.0%established post-AI(P=0.44),and 39.5%late post-AI(P=0.77).There were no significant differences in polyp detection rate(PDR,baseline 59.7%),advanced ADR(baseline 16.2%),and non-neoplastic PDR(baseline 30.0%)before and after AI *** In patients with an increased pre-test probability of having an abnormal colonoscopy,the current generation of AI did not yield enhanced CRC screening metrics over high-quality *** the potential of AI in colonoscopy is undisputed,current AI technology may not universally elevate screening metrics across all situations and patient *** studies that analyze different AI systems across various patient populations are needed to determine the most effective role of AI in optimizing CRC screening in clinical practice.

关键词： Artificial intelligence Colonoscopy Adenoma detection rate Screening Colorectal adenoma

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Evolutionary prisoner＇s dilemma games with local interaction and best-response dynamics

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Frontiers of Mathematics in China 2015年第4期10卷 839-856页

作者： Yunshyoug chow Institute of Mathematics Academia Sinica Taipei Taiwan 11529 China

This paper studies the long run behavior in evolutionary prisoner＇s dilemma games. All players are assumed to sit around a circle and to interact only with their neighbors. It is known that full-defection is the unique long run equilibrium as the probability of players＇ experimentation （or mutation） tends to zero in the best response dynamics. Here, it is shown that full-cooperation could emerge in the long run if one also cares for his neighbors in the best- response dynamics.

关键词： Prisoner's dilemma game full cooperation best response localinteraction long run equilibrium parallel updating

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Collaborative Distributed AC Optimal Power Flow: A Dual Decomposition Based Algorithm

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Journal of Modern Power Systems and Clean Energy 2021年第6期9卷 1414-1423页

作者： Zheyuan Cheng Mo-Yuen chow IEEE Department of Electrical and Computer Engineering North Carolina State University

We propose a dual decomposition based algorithm that solves the AC optimal power flow(ACOPF) problem in the radial distribution systems and microgrids in a collaborative and distributed manner. The proposed algorithm adopts the second-order cone program(SOCP) relaxed branch flow ACOPF model. In the proposed algorithm, bus-level agents collaboratively solve the global ACOPF problem by iteratively sharing partial variables with its 1-hop neighbors as well as carrying out local scalar computations that are derived using augmented Lagrangian and primal-dual subgradient methods. We also propose two distributed computing platforms, i. e., high-performance computing(HPC) based platform and hardware-in-theloop(HIL) testbed, to validate and evaluate the proposed algorithm. The computation and communication performances of the proposed algorithm are quantified and analyzed on typical IEEE test systems. Experimental results indicate that the proposed algorithm can be executed on a fully distributed computing structure and yields accurate ACOPF solution. Besides, the proposed algorithm has a low communication overhead.

关键词： Distributed convex optimization distributed en-ergy management system optimal power flow primal-dual de-composition

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On English Teaching From the Scope of China's Mainland

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Sino-US English Teaching 2024年第1期21卷 6-13页

作者： Shufang Qu Tong Wooi chow Malaysia University of Science and Technology Petaling JayaMalaysia

In China,English is required in every school of China and many achievements have been made in this part of the *** English level of Chinese has been greatly improved but the problems still exist in this *** approach and many other successful teaching methods have been employed;however,the problems in English teaching still occur and last to the present *** efforts have been made to have outstanding and successful results in English *** therefore hope much success will be achieved as quickly as possible.

关键词： English teaching success methods

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NOTES ON REFINABLE FUNCTIONS

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Journal of Computational Mathematics 1998年第4期16卷 319-326页

作者： Shi, XQ Deng, H Lin, hf Dalian Univ Technol Dept Math Dalian 116024 Peoples R China Hydraul Prospecting & Designing Inst Jilin Prov Dept Technol Changchun 130021 Peoples R China Dalian Univ Technol Dept Comp Sci Dalian 116024 Peoples R China

In this paper some properties of refinable functions and some relationships between the mask symbol and the refinable functions are studied. Especially, it is illustrated by examples that the linear spaces formed by the translates over the lattice points of refinable functions may contain polynomial spaces of deg-ree higher than the smooth order of the corresponding refinable functions.

关键词： mask symbol refinable function

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Enabling Inverter-based Resource Stability Control in Power Systems with High Renewable Penetration

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CSEE Journal of Power and Energy Systems 2023年第3期9卷 1248-1250页

作者： Joe H.chow Rensselaer Polytechnic Institute TroyNY 12180-3590USA

This rapid communication provides the author’s viewpoints on the need to develop grid stability functions for inverter-based resources,in particular,controls to enhance system *** discussion will be focused on transi... 详细信息

关键词： Frequency regulation inverter control time scales transient stability

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Treatment of corticosteroid-resistant ulcerative colitis with oral low molecular weight heparin

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World Journal of Gastroenterology 1999年第5期5卷 448-450页

作者： Cui hf Jiang XL Shandong Med Univ Dept Biochem Pharmaceut Jinan 250012 Peoples R China Chinese PLA Gen Hosp Jinan Command Dept Gastroenterol Jinan 250031 Peoples R China

INTRODUCTIONThe etiology and pathogenesis of ulcerative colitis (UC) have remained unclear. Treatment is nonspecific based on the anti-inflammatory agents corticosteroid and sulfasalazine. A significant proportion fail to respond to this therapy[1]. As the relapse, refractory or serious UC patients had a hypercoagulable state and an increased incidence of thromboembolic events[2-4], heparin has been used by some authors[5-7]. Yet, its half-life period is short, needing long-term injection, which restricts its further clinical application. Our previous studies have demonstrated oral LMWH not only overcomes the shortcomings of common heparin[8,9], but also has anti-inflammatory effects[10,11]. The aim of this paper is to study the therapeutic effects and mechanism of oral LMWH in patients with corticosteroid-resistant UC.

关键词： colitis ulcerative/drug therapy heparin/therapertic use corticosteroidresistant

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Upper Bainite Formation Mechanism in Fe-1.36Si-1.01Cr-0.88C Steel

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Journal of Materials Science & Technology 1998年第1期14卷 62-64页

作者： Liu, QS Peng, hf Gu, NJ Hebei Univ Technol Tianjin 300132 Peoples R China

In this paper it is-discussed on the mechanism of upper bainite formation. According to the results obtained in Fe-1.36Si-1.01Cr-0.88C steel, we discovered that the primary upper bainite is formed by subunits arranging along its long axis and steps are formed by subunits growing into different size-along the thickness, the macro-plane of the primary upper bainite plate is the same as the basal plane (shear plane), the formation mechanism of the primary upper bainite plate is the nucleation-growth mechanism of subunits shearing one by one along long axis, controlled by diffusion.

关键词： Steel

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Model systems to study the life cycle of human papillomaviruses and HPV-associated cancers

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Virologica Sinica 2015年第2期30卷 92-100页

作者： Louise T.chow Department of Biochemistry and Molecular Genetics University of Alabama at Birmingham Birmingham 35294-0005 USA

The prevalent human papillomaviruses(HPVs) infect either cutaneous or mucosal epithelium. Active Infections lead to epithelial hyperprolifeation and are usually cleared in healthy individuals within a year. Persistent infections in the anogenital tracts by certain high-risk genotypes such as HPV-16, HPV-18 and closely related types, can progress to high grade dysplasias and carcinomas in women and men, including cervical, vulva, penile and anal cancers. A significant fraction of the head and neck cancers are also caused by HPV-16. The viral oncogenes responsible for neoplastic conversion are E6 and E7 that disrupt the pathways controlled by the two major tumor suppressor genes, p53 and members of p RB family. Because HPV cannot be propagated in conventional submerged monolayer cell cultures, organotypic epithelial raft cultures that generate a stratified and differentiated epithelium have been used to study the viral life cycle. This article describes several systems to examine aspects of the viral productive phase, along with the advantages and limitations. Animal model systems of HPV carcinogenesis are also briefly described.

关键词： human papillomaviruses(HPVs) productive program HPV-associated cancers model systems

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Heteroaggregation between porphyrin and phthalocyanine bearing oppositely charged substituents

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Chinese Journal of Chemistry 1995年第3期13卷 223-230页

作者： MAO, hf TIAN, HJ XU, HJ CHINESE ACAD SCI INST PHOTOG CHEMBEIJING 100101PEOPLES R CHINA

Heteroaggregates composed of cationic porphyrin, meso-tetra(p-trimethylamino)porphyrin iodide, its sine complex and anionic phthalocyanine sodium hydroxygallium 4,4',4 '',4 ''-tetrasulfonated phthalocyanine have been investigated by absorption and fluorescence spectroscopy. It has been found that both free base cationic porphyrin and its zinc complex can form very stable heterodimers with anionic phthalocyanine in water, methanol and dimethylformamide. The stability of the aggregate depends on the polarity as well as the ligation ability of the solvent. No evidence of higher aggregates was detected. Besides axial coordination, steric hindrance which influences the relative orientation of the macrocycles are considered.

关键词： PORPHYRIN PHTHALOCYANINE HETEROAGGREGATION

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