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A Continuous Current Model of Accumulation Mode(Junctionless)Cylindrical Surrounding-Gate Nanowire MOSFETs

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chinese Physics Letters 2013年第3期30卷 190-193页

作者： JIN Xiao-Shi LIU Xi KWON Hyuck-In lee Jong-ho School of Information Science and Engineering Shenyang University of TechnologyShenyang 110023 School of Electrical and Electronics Engineering Chung-Ang UniversitySeoul 156-756Korea School of EECS Engineering and ISRC(Inter-University Semiconductor Research Center) Seoul National UniversityShinlim-DongKwanak-GuSeoul 151-742Korea

A continuous current model of accumulation mode or so-called junctionless(JL)cylindrical surrounding-gate Si Nanowire metal-oxide-silicon field effect transistors(MOSFETs)is *** model is based on an approximated solution of Poisson's equation considering both body doping and mobile charge *** is verified by comparing with three-dimensional simulation results using SILVACO Atlas TCAD which shows good *** any empirical fitting parameters,the proposed continuous current model of JL SRG MOSFETs is valid for all the operation regions.

关键词： MOSFETs TCAD cylindrical

Pathophysiology after pancreaticoduodenectomy

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World Journal of Gastroenterology 2015年第19期21卷 5794-5804页

作者： Chang Moo Kang Jin ho lee Chang Moo Kang Jin Ho Lee Department of Hepatobiliary and Pancreatic Surgery Yonsei University College of Medicine Seoul 120-752 South Korea.

Pancreaticoduodenectomy （PD） will result in removalof important multiorgans in upper intestinal tract andsubsequently secondary physiologic change. In thepast, surgeons just focused on the safety of surgicalprocedure; however, PD is regarded as safe and widelyapplied to treatment of periampullary lesions. Practicalissues after PD, such as, effect of duodenectomy,metabolic surgery-like effect, alignment effect ofgastrointestinal continuity, and non-alcoholic fatty liverdisease were summarized and discussed.

关键词： Pancreaticoduodenectomy Delayed gastricemptying Metabolic surgery Exocrine insufficiency Fatty liver Postoperative pancreatic fistula

Is endoscopic ultrasonography still the modality of choice in preoperative staging of gastric cancer?

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World Journal of Gastroenterology 2014年第38期20卷 13775-13782页

作者： Sung Wook Hwang Dong ho lee Department of Internal Medicine and Liver Research Institute Seoul National University College of Medicine Department of Internal Medicine Seoul National University Bundang HospitalSeongnam

The treatment option for gastric cancer is usually based on preoperative staging by imaging modalities. Endoscopic ultrasonography (EUS) and computed tomography (CT) have been used as the diagnostic modality of choice in preoperative staging of gastric cancer. Magnetic resonance imaging (MRI) has been employed in several studies, and (18F) 2-Fluoro-2-deoxyglucose (FDG) positron emission tomography (PET) has emerged as a new promising imaging modality. The purpose of this article is to provide summarized information on preoperative staging using EUS, multi-detector row CT (MDCT), MRI and PET for gastric cancer. In T staging, both EUS and MDCT show high accuracy. MRI seemed to have better performance, but the number of MRI studies is limited. FDG-PET is not able to properly evaluate the depth of invasion. In N staging, the diagnostic accuracy of EUS, MDCT and MRI is not sufficient. In preoperative M staging, MDCT and FDG-PET showed similar diagnostic accuracies. FDG-PET/CT fusion could be expected to show better performance in the future. Physicians should keep in mind that each diagnostic modality has advantages and limitations and choose an appropriate diagnostic strategy tailored for each patient.

关键词： Gastric cancer Endoscopic ultrasonography Computed tomography Magnetic resonance imaging Positron emission tomography

Radiologic evaluation of nonalcoholic fatty liver disease

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World Journal of Gastroenterology 2014年第23期20卷 7392-7402页

作者： Seung Soo lee Seong ho Park Department of Radiology and Research Institute of Radiology University of Ulsan College of MedicineAsan Medical CenterSeoul 138-736South Korea

Nonalcoholic fatty liver disease(NAFLD)is a frequent cause of chronic liver diseases,ranging from simple steatosis to nonalcoholic steatohepatitis(NASH)-related liver *** liver biopsy is still the gold standard for the diagnosis of NAFLD,especially for the diagnosis of NASH,imaging methods have been increasingly accepted as noninvasive alternatives to liver *** is a well-established and costeffective imaging technique for the diagnosis of hepatic steatosis,especially for screening a large population at risk of *** has a reasonable accuracy in detecting moderate-to-severe hepatic steatosis although it is less accurate for detecting mild hepatic steatosis,operator-dependent,and rather *** tomography is not appropriate for general population assessment of hepatic steatosis given its inaccuracy in detecting mild hepatic steatosis and potential radiation ***,computed tomography may be effective in specific clinical situations,such as evaluation of donor candidates for hepatic *** resonance spectroscopy and magnetic resonance imaging are now regarded as the most accurate practical methods of measuring liver fat in clinical practice,especially for longitudinal followup of patients with *** elastography and magnetic resonance elastography are increasingly used to evaluate the degree of liver fibrosis in patients with NAFLD and to differentiate NASH from simple *** article will review current imaging methods used to evaluate hepatic steatosis,including the diagnostic accuracy,limitations,and practical applicability of each *** will also briefly describe the potential role of elastography techniques in the evaluation of patients with NAFLD.

关键词： Nonalcoholic fatty liver disease Nonalcoholic steatohepatitis Liver steatosis Magnetic resonance spectroscopy Magnetic resonance imaging Ultrasonography Computed tomography Elastography

Minimally invasive surgery for submucosal(subepithelial) tumors of the stomach

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World Journal of Gastroenterology 2014年第36期20卷 13035-13043页

作者： Chang Min lee Hyung-ho Kim Department of Surgery Seoul National University Bundang Hospital Seongnam 463-707 South Korea Colledge of Medicine Seoul National University Seoul 110-799 South Korea

Minimally invasive surgery has become common in the surgical resection of gastrointestinal submucosal tumors(SMTs). The purpose of this article is to review recent trends in minimally invasive surgery for gastric SMTs. Although laparoscopic resection has been main stream of minimally invasive surgery for gastrointestinal SMTs, recent advances in endoscopic procedures now provide various treatment modalities for gastric SMTs. Moreover, investigators have developed several hybrid techniques that include the advantages of both laparoscopic and endoscopic procedure. In addition, several types of reduced port surgeries, modification of conventional laparoscopic procedures, have been recently applied to the surgical resection of SMTs. Meanwhile, robotic surgery for SMTs requires further evidence and improvement.

关键词： Minimally invasive Surgery Submucosal tumor Gastrointestinal tract

Prospects for nucleic acid-based therapeutics against hepatitis C virus

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World Journal of Gastroenterology 2013年第47期19卷 8949-8962页

作者： Chang ho lee Ji Hyun Kim Seong-Wook lee Department of Molecular Biology Institute of Nanosensor and BiotechnologyDankook UniversityYongin 448-701South Korea

In this review,we discuss recent advances in nucleic acid-based therapeutic technologies that target hepatitis C virus(HCV)*** the HCV genome is present exclusively in RNA form during replication,various nucleic acid-based therapeutic approaches targeting the HCV genome,such as ribozymes,aptamers,siRNAs,and antisense oligonucleotides,have been suggested as potential tools against *** acids are potentially immunogenic and typically require a delivery tool to be utilized as *** limitations have hampered the clinical development of nucleic acid-based ***,despite these limitations,nucleic acid-based therapeutics has clinical value due to their great specificity,easy and large-scale synthesis with chemical methods,and pharmaceutical ***,nucleic acid therapeutics are expected to broaden the range of targetable molecules essential for the HCV replication cycle,and therefore they may prove to be more effective than existing therapeutics,such as interferon-αand ribavirin combination *** review focuses on the current status and future prospects of ribozymes,aptamers,siRNAs,and antisense oligonucleotides as therapeutic reagents against HCV.

关键词： Hepatitis C virus Nucleic acid-based therapeutics Ribozyme Aptamer siRNA Antisense oligonucleotide

On Product-Cordial Index Sets and Friendly Index Sets of 2-Regular Graphs and Generalized Wheels

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Acta Mathematica Sinica,English Series 2012年第4期28卷 661-674页

作者： Harris KWONG Sin Min lee ho Kuen NG Department of Mathematical Science SUNY Fredonia Department of Computer Science San Jose State University Department of Mathematics San Jose State University

A vertex labeling f ： V →Z2 of a simple graph G = （V, E） induces two edge labelings The friendly index set and the product-cordial index set of G are defined as the setsf is friendly}. In this paper we study and determine the connection between the friendly index sets and product-cordial index sets of 2-regular graphs and generalized wheel graphs.

关键词： Friendly index set product cordial index set 2-regular graphs generalized wheels

A Rapid Adaptation Approach for Dynamic Air‑Writing Recognition Using Wearable Wristbands with Self‑Supervised Contrastive Learning

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Nano-Micro Letters 2025年第2期17卷 417-431页

作者： Yunjian Guo Kunpeng Li Wei Yue Nam‑Young Kim Yang Li Guozhen Shen Jong‑Chul lee Department of Electronic Convergence Engineering Kwangwoon UniversitySeoul 01897South Korea Radio Frequency Integrated Circuit(RFIC)Bio Centre Kwangwoon UniversitySeoul 01897South Korea Department of Electronic Engineering Kwangwoon UniversitySeoul 01897South Korea School of Microelectronics Shandong UniversityJinan 250101People’s Republic of China State Key Laboratory of Integrated chips and Systems Fudan UniversityShanghai 200433People’s Republic of China School of Integrated Circuits and Electronics Beijing Institute of TechnologyBeijing 100081People’s Republic of China

Wearable wristband systems leverage deep learning to revolutionize hand gesture recognition in daily *** existing approaches that often focus on static gestures and require extensive labeled data,the proposed wearable wristband with selfsupervised contrastive learning excels at dynamic motion tracking and adapts rapidly across multiple *** features a four-channel sensing array composed of an ionic hydrogel with hierarchical microcone structures and ultrathin flexible electrodes,resulting in high-sensitivity capacitance *** wireless transmission from a Wi-Fi module,the proposed algorithm learns latent features from the unlabeled signals of random wrist ***,only few-shot labeled data are sufficient for fine-tuning the model,enabling rapid adaptation to various *** system achieves a high accuracy of 94.9%in different scenarios,including the prediction of eight-direction commands,and air-writing of all numbers and *** proposed method facilitates smooth transitions between multiple tasks without the need for modifying the structure or undergoing extensive task-specific *** utility has been further extended to enhance human–machine interaction over digital platforms,such as game controls,calculators,and three-language login systems,offering users a natural and intuitive way of communication.

关键词： Wearable wristband Self-supervised contrastive learning Dynamic gesture Air-writing Human-machine interaction

Enhanced prediction of anisotropic deformation behavior using machine learning with data augmentation

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Journal of Magnesium and Alloys 2024年第1期12卷 186-196页

作者： Sujeong Byun Jinyeong Yu Seho Cheon Seong ho lee Sung Hyuk Park Taekyung lee School of Mechanical Engineering Pusan National UniversityBusan 46241South Korea School of Materials Science and Engineering Kyungpook National UniversityDaegu 41566South Korea

Mg alloys possess an inherent plastic anisotropy owing to the selective activation of deformation mechanisms depending on the loading *** characteristic results in a diverse range of flow curves that vary with a deformation *** study proposes a novel approach for accurately predicting an anisotropic deformation behavior of wrought Mg alloys using machine learning(ML)with data *** developed model combines four key strategies from data science:learning the entire flow curves,generative adversarial networks(GAN),algorithm-driven hyperparameter tuning,and gated recurrent unit(GRU)*** proposed model,namely GAN-aided GRU,was extensively evaluated for various predictive scenarios,such as interpolation,extrapolation,and a limited dataset *** model exhibited significant predictability and improved generalizability for estimating the anisotropic compressive behavior of ZK60 Mg alloys under 11 annealing conditions and for three loading *** GAN-aided GRU results were superior to those of previous ML models and constitutive *** superior performance was attributed to hyperparameter optimization,GAN-based data augmentation,and the inherent predictivity of the GRU for *** a first attempt to employ ML techniques other than artificial neural networks,this study proposes a novel perspective on predicting the anisotropic deformation behaviors of wrought Mg alloys.

关键词： Plastic anisotropy Compression Annealing Machine learning Data augmentation