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Correlations between endoscopic and clinical disease activity indices in intestinal Behcet's disease

World Journal of Gastroenterology 2012年第40期18卷 5771-5778页

作者： Hyun Jung Lee youn nam kim Hui Won Jang Han Ho Jeon Eun Suk Jung Soo Jung Park Sung Pil Hong Tae Il kim Won Ho kim Chung Mo nam Jae Hee Cheon Department of Internal Medicine Institute of GastroenterologyYonsei University College of MedicineSeoul 120-752South Korea Department of Biostatistics Yonsei University College of MedicineSeoul 120-752South Korea Department of Preventive Medicine Yonsei University College of MedicineSeoul 120-752South Korea

AIM:To develop a novel endoscopic severity model of intestinal Behcet's disease(BD) and to evaluate its feasibility by comparing it with the actual disease activity index for intestinal Behcet's disease(DAIBD).METHODS:We reviewed the medical records of 167 intestinal BD patients between March 1986 and April *** also investigated the endoscopic parameters including ulcer locations,distribution,number,depth,shape,size and margin to identify independent factors associated with *** endoscopic severity model was developed using significant colonoscopic variables identified by multivariate regression analysis and its correlation with the DAIBD was *** determine factors related to the discrepancy between endoscopic severity and clinical activity,clinical characteristics and laboratory markers of the patients were ***:A multivariate regression analysis revealed that the number of intestinal ulcers(≥ 2,P = 0.031) and volcanoshaped ulcers(P = 0.001) were predictive factors for the *** endoscopic severity model(Y) was developed based on selected endoscopic variables as follows:Y = 47.44 + 9.04 × non-Ileocecal area + 11.85 ×≥ 2 of intestinal ulcers + 5.03 × shallow ulcers + 12.76 × deep ulcers + 4.47 × geographicshaped ulcers + 26.93 × volcano-shaped ulcers + 8.65 ×≥ 20 mm of intestinal ***,endoscopic parameters used in the multivariate analysis explained only 18.9% of the DAIBD *** with severe DAIBD scores but with moderately predicted disease activity by the endoscopic severity model had more symptoms of irritable bowel syndrome(21.4% vs 4.9%,P = 0.026) and a lower rate of corticosteroid use(50.0% vs 75.6%,P = 0.016) than those with severe DAIBD scores and accurately predicted disease by the ***:Our study showed that the number of intestinal ulcers and volcano-shaped ulcers were predictive factors for severe DAIBD ***,the correlation between endoscopic severity and DAIBD(r = 0.434) was weak.

关键词： Intestinal Behcet's disease Disease activityindex Colonoscopy Ulcer Endoscopic severity

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A New Encryption Mechanism Supporting the Update of Encrypted Data for Secure and Efficient Collaboration in the Cloud Environment

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 813-834页

作者： Chanhyeong Cho Byeori kim Haehyun Cho Taek-young youn Department of Cyber Security Dankook UniversityYongin16890Republic of Korea Department of Software Soongsil UniversitySeoul07027Republic of Korea

With the rise of remote collaboration,the demand for advanced storage and collaboration tools has rapidly ***,traditional collaboration tools primarily rely on access control,leaving data stored on cloud servers vulnerable due to insufficient *** paper introduces a novel mechanism that encrypts data in‘bundle’units,designed to meet the dual requirements of efficiency and security for frequently updated collaborative *** bundle includes updated information,allowing only the updated portions to be reencrypted when changes *** encryption method proposed in this paper addresses the inefficiencies of traditional encryption modes,such as Cipher Block Chaining(CBC)and Counter(CTR),which require decrypting and re-encrypting the entire dataset whenever updates *** proposed method leverages update-specific information embedded within data bundles and metadata that maps the relationship between these bundles and the plaintext *** utilizing this information,the method accurately identifies the modified portions and applies algorithms to selectively re-encrypt only those *** approach significantly enhances the efficiency of data updates while maintaining high performance,particularly in large-scale data *** validate this approach,we conducted experiments measuring execution time as both the size of the modified data and the total dataset size *** show that the proposed method significantly outperforms CBC and CTR modes in execution speed,with greater performance gains as data size ***,our security evaluation confirms that this method provides robust protection against both passive and active attacks.

关键词： Cloud collaboration mode of operation data update efficiency

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Prominent cycling reversibility and kinetics enabled by CaTiO3 protective layer on Zn metal for aqueous Zn-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 245-258页

作者： Gaeun Lee Yong nam Ahn Seongjoon So Chanwoo Park Jong-Seong Bae Taehyun Park Il Tae kim Jaehyun Hur School of Chemical Biological and Battery Engineering Gachon University Seongnam Busan Center Korea Basic Science Institute

Aqueous Zn-ion batteries （AZIBs） have received considerable attention owing to their various advantages such as safety,low cost,simple battery assembly conditions,and high ionic ***,they still suffer from serious problems,including uncontrollable dendrite growth,corrosion,hydrogen evolution reaction （HER） from water decomposition,electrode passivation,and unexpected *** creation of a uniform artificial nanocrystal layer on the Zn anode surface is a promising strategy for resolving these ***,we propose the use of a perovskite CaTiO3（CTO） protective layer on Zn（CTO@Zn） as a promising approach for improving the performance of *** CTO artificial layer provides an efficient pathway for Zn ion diffusion towards the Zn metal because of the high dielectric constant （εr=180） and ferroelectric characteristics that enable the alignment of dipole moments and redistribute the Zn2+ions in the CTO *** avoiding the direct contact of the Zn anode with the electrolyte solution,the uneven dendrite growth,corrosion,parasitic side reactions,and HER are mitigated,while CTO retains its mechanical and chemical robustness during ***,CTO@Zn demonstrates an improved lifespan in a symmetric cell configuration compared with bare ***@Zn shows steady overpotential （～68 m V） for 1500 h at 1 mA cm-2/0.5 mA h cm-2,excelling bare ***,when paired with the V2O5-C cathode,the CTO@Zn//V2O5-C full battery delivers 148.4 mA h g-1（based on the mass of the cathode） after 300 *** study provides new insights into Zn metal anodes and the development of high-performance AZIBs.

关键词： Artificial layer Dielectric constant Zn metal anode Zinc aqueous battery

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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

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A huge thrombosed aneurysm of a saphenous vein graft leading to compression of cardiac structures： role of multimodality imaging

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Journal of Geriatric Cardiology 2017年第8期14卷 536-537页

作者： Byung Gyu kim In-Cheol kim Seok-Min Kang young-nam youn Division of Cardiology Department of Internal Medicine Severance Cardiovascular Hospital Yonsei University College of Medicine Seoul South Korea Division of Cardiology Department of Internal Medicine Seoul Paik Hospital Inje University College of Medicine Seoul South Korea Division of Cardiology Department of Internal Medicine Keimyung University Dongsan Medical Center Daegu South Korea Department of Thoracic and Cardiovascular Surgery Severance Cardiovascular Hospital Yonsei University College of Medicine Seoul South Korea

Aneurysmal change of saphenous vein grafts （SVG） is a rare condition that predominantly develops 10-20 years after coronary artery bypass graft （CABG）. Natural course includes mechanical complications due to mass effect, myocardial infarction and aneurysmal rupture. Aneurysmectomy can be considered when it induces such complications. We demonstrate complete set of diagnosis, treatment and post-operative imaging of a huge SVG aneurysm that was successfully treated with surgical resection.

关键词： Coronary artery bypass graft Multimodality imaging Saphenous vein graft aneurysm

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Mode of Operation for Modification, Insertion, and Deletion of Encrypted Data

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Computers, Materials & Continua 2022年第10期73卷 151-164页

作者： Taek-young youn nam-Su Jho Dankook University YonginGyeonggi16890Korea Electronics and Telecommunications Research Institute Daejeon34129Korea

Due to the development of 5G communication,many aspects of information technology(IT)services are *** the development of communication technologies such as 5G,it has become possible to provide IT services that were difficult to provide in the *** of the services made possible through this change is cloud-based *** order to support secure collaboration over cloud,encryption technology to securely manage dynamic data is ***,since the existing encryption technology is not suitable for encryption of dynamic data,a new technology that can provide encryption for dynamic data is required for secure cloudbased *** this paper,we propose a new encryption technology to support secure collaboration for dynamic data in the ***,we propose an encryption operation mode which can support data updates such as modification,addition,and deletion of encrypted data in an encrypted *** support the dynamic update of encrypted data,we invent a new mode of operation technique named linked-block cipher(LBC).Basic idea of our work is to use an updatable random value so-called link to link two encrypted *** to the use of updatable random link values,we can modify,insert,and delete an encrypted data without decrypt it.

关键词： Data encryption cloud-based collaboration dynamic data update

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Contemporary management of locally advanced rectal cancer:Resolving issues, controversies and shifting paradigms

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Chinese Journal of Cancer Research 2018年第1期30卷 131-146页

作者： Aeris Jane D.Nacion youn young Park nam Kyu kim Department of Surgery Eastern Visayas Regional Medical Center Division of Colorectal Surgery Department of Surgery Yonsei University College of Medicine

Advancements in rectal cancer treatment have resulted in improvement only in locoregional control and have failed to address distant relapse, which is the predominant mode of treatment failure in rectal cancer. As the efficacy of conventional chemoradiotherapy（CRT） followed by total mesorectal excision（TME） reaches a plateau, the need for alternative strategies in locally advanced rectal cancer（LARC） has grown in relevance. Several novel strategies have been conceptualized to address this issue, including： 1） neoadjuvant induction and consolidation chemotherapy before CRT; 2） neoadjuvant chemotherapy alone to avoid the sequelae of radiation; and 3） nonoperative management for patients who achieved pathological or clinical complete response after CRT. This article explores the issues, recent advances and paradigm shifts in the management of LARC and emphasizes the need for a personalized treatment plan for each patient based on tumor stage, location, gene expression and quality of life.

关键词： Locally advanced rectal cancer neoadjuvant treatment chemoradiotherapy

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Flow Characteristics in Compact Thermal Spray Coating Systems with Minimum Length Nozzle

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Plasma Science and Technology 2009年第5期11卷 550-554页

作者： Seung-Hyun kim youn-Jea kim School of Mechanical Engineering Sungkyunkwan University

In this study, numerical analysis is performed to adopt the equivalence ratio on the high velocity oxygen fuel （HVOF） thermal spray coating systems equipped with a minimum length nozzle. The analysis is applied to investigate the axisymmetric, steady-state, turbulent, and chemically combusting flow both within the torch and in a free jet region between the torch and the substrate to be coated. The combustion is modeled using a single-step and eddy-dissipation model which assumes that the reaction rate is limited by the turbulent mixing rate of the fuel and oxidant. As the diameter of the nozzle throat is increased, the location of the Mach shock disc moves backward from the nozzle exit. As the throat diameter and the divergent portion are 6 mm and 8 mm, respectively, the pressure in the HVOF system is the lowest at the chamber and the expanding gas is steadily maintained with both high velocity and high temperature for different equivalence ratios. Thus, relatively minor amendments of the equivalence ratio and the geometry of HVOF can lead to improved control over coating characteristics.

关键词： minimum length nozzle HVOF equivalence ratio

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Analytical analysis of pullout resistance of the hydraulic expansion rockbolts on a frictionally coupled model

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Journal of Mountain Science 2016年第12期13卷 2249-2259页

作者： Sejin kim Heejung youn Kyoungchul kim Department of Civil Engineering Hongik University R&D Center Kolon Global Corporation

This paper proposes an empirical formula to estimate the shear strength of hydraulic expansion *** field experimental results were obtained from eleven pullout tests to evaluate the results computed by the proposed *** was found that shear resistance of hydraulic expansion rockbolts significantly depends on the uniaxial compressive strength and elastic modulus of rock,with high correlation coefficients of 0.7651 and0.8587,*** developed formula enables estimation of the maximum pullout load in an analytical process without pullout tests in the ***,due to the poor interlocking at the initial pullout load,the measured displacements were higher than the estimated *** reduce the interlocking effects between bolt and rock,we recommend preloading of 29.4 *** allows reducing the distance between the measured and estimated displacement and making two load-displacement curves practically identical with marginal differences of 1.1 to 1.5 mm at the maximum pullout load.

关键词： Expansion rockbolt Pullout resistance Pullout load Shear strength

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Biopeptides of Pyropia yezoensis and their potential health benefits: A review

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Asian Pacific Journal of Tropical Biomedicine 2021年第9期11卷 375-384页

作者： Sivakumar Allur Subramaniyan Naziya Begum Sung Jae kim youn Hee Choi Taek-Jeong nam Institute of Fisheries Sciences Pukyong National UniversityBusan 46041South Korea Department of Chemistry College of Natural and computational sciencesDebre Berhan UniversityDebye BerhanP.O.Box-445 Ethiopia Department of Orthopaedic Surgery Dongtan Sacred Heart HospitalHallym University College of MedicineHwaseongRepublic of Korea Department of Marine Bio-Materials&Aquaculture Pukyong National UniversityBusan 48513South Korea

Pyropia yezoensis(***)is a popular species of red algae that are commercially cultivated and consumed in East Asia,China,Japan,and *** high protein content of *** provides a source of multiple bioactive peptides exhibiting antioxidant,anti-inflammatory,antihypertensive,anticancer,tissue healing,immunomodulatory,and anticoagulant ***,many other biologically active substances in ***,including carbohydrates,lipids,dietary fibers,and polyphenols,have shown potential health benefits and are important in both the food and agriculture *** review provides a detailed summary of researches over the last decade on the biological and medicinal properties of bioactive *** information was extracted from various electronic resources,including Google Scholar,PubMed,MEDLINE,and Google Patents.

关键词： Red algae Pyropia Bioactive peptides Human health

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