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Machine-Learning Based Packet Switching Method for Providing Stable High-Quality Video Streaming in Multi-Stream Transmission

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Computers, Materials & Continua 2024年第3期78卷 4153-4176页

作者： Yumin Jo Jongho paik Major in Software Fusion Department of ComputerSeoulWomen’s UniversitySeoul01797South Korea Department of Software Convergence Seoul Women’s UniversitySeoul01797South Korea

Broadcasting gateway equipment generally uses a method of simply switching to a spare input stream when a failure occurs in a main input ***,when the transmission environment is unstable,problems such as reduction in the lifespan of equipment due to frequent switching and interruption,delay,and stoppage of services may ***,applying a machine learning(ML)method,which is possible to automatically judge and classify network-related service anomaly,and switch multi-input signals without dropping or changing signals by predicting or quickly determining the time of error occurrence for smooth stream switching when there are problems such as transmission errors,is *** this paper,we propose an intelligent packet switching method based on the ML method of classification,which is one of the supervised learning methods,that presents the risk level of abnormal multi-stream occurring in broadcasting gateway equipment based on ***,we subdivide the risk levels obtained from classification techniques into probabilities and then derive vectorized representative values for each attribute value of the collected input data and continuously update *** obtained reference vector value is used for switching judgment through the cosine similarity value between input data obtained when a dangerous situation *** the broadcasting gateway equipment to which the proposed method is applied,it is possible to perform more stable and smarter switching than before by solving problems of reliability and broadcasting accidents of the equipment and can maintain stable video streaming as well.

关键词： Broadcasting and communication convergence multi-stream packet switching advanced television systems committee standard 3.0(ATSC 3.0) data pre-processing machine learning cosine similarity

In-situ isothermal aging TEM analysis of a micro Cu/ENIG/Sn solder joint for flexible interconnects

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Journal of Materials Science & Technology 2024年第2期169卷 42-52页

作者： Jinhong Liu Jianhao Xu Kyung-Wook paik Peng He Shuye Zhang State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin150001China Department of materials science and engineering KAIST291 Daehak-roYuseong-guDaejeon305-338Republic of Korea

Sn/ENIG has recently been used in flexible interconnects to form a more stable micron-sized metallurgical joint,due to high power capability which causes solder joints to heat up to 200℃.However,Cu_(6)Sn_(5)which is critical for a microelectronic interconnection,will go through a phase transition at temperatures between 186 and 189℃.This research conducted an in-situ TEM study of a micro Cu/ENIG/Sn solder joint under isothermal aging test and proposed a model to illustrate the mechanism of the microstructural *** results showed that part of the Sn solder reacted with Cu diffused from the electrode to formη´-Cu_(6)Sn_(5)during the ultrasonic bonding process,while the rest of Sn was left and enriched in a region in the solder *** the enriched Sn quickly diffused to both sides when the temperature reached 100℃,reacting with the ENIG coating and Cu to form(Ni_(x)Cu_(1-x))_(3)Sn_(4),AuSn_(4),and Cu_(6)Sn_(5)*** entering the heat preservation process,the diffusion of Cu from the electrode to the joint became more intense,resulting in the formation of Cu_(3)*** scallop-type Cu_(6)Sn_(5)and the seahorse-type Cu_(3)Sn constituted a typical two-layered structure in the solder *** importantly,the transition betweenηandη’was captured near the phase transition temperature for Cu_(6)Sn_(5)during both the heating and cooling process,which was accompanied by a volume shifting,and the transition process was further *** research is expected to serve as a reference for the service of micro Cu/ENIG/Sn solder joints in the electronic industry.

关键词： In-situ TEM observation Isothermal aging Micro Cu/ENIG/Sn solder joint Cu_(6)Sn_(5)phase transition

植物乳杆菌KCCM 11613P发酵的旋覆花花瓣提取物的抗黑素生成的作用(英文)

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2017年第9期18卷 816-824页

作者： Eun-hye PARK Won-young BAE Jae-yeon KIM Kee-tae KIM hyun-dong paik Department of Food Science and Biotechnology of Animal Resources Konkuk University Bio/Molecular Informatics Center Konkuk University

目的:研究植物乳杆菌发酵对旋覆花花瓣提取物对酪氨酸酶的抑制效果,为开发旋覆花提取物作为潜在的皮肤增白成分提供依据。创新点:发现旋覆花植物乳杆菌发酵的提取物可以作为有效的美白材料。方法:比较研究了植物乳杆菌发酵的旋覆花花瓣... 详细信息

目的:研究植物乳杆菌发酵对旋覆花花瓣提取物对酪氨酸酶的抑制效果,为开发旋覆花提取物作为潜在的皮肤增白成分提供依据。创新点:发现旋覆花植物乳杆菌发酵的提取物可以作为有效的美白材料。方法:比较研究了植物乳杆菌发酵的旋覆花花瓣提取物对酪氨酸酶活性的抑制作用,并测定了提取物中总黄酮和多酚类化合物的含量。通过体外酪氨酸酶和左旋多巴(L-DOPA)染色来测定其对皮肤的美白活性。结论:旋覆花花瓣经过72小时的发酵后,其提取物中总黄酮含量提高13.4%。采用500μg/ml发酵和未发酵的提取物处理B16F10细胞,细胞活性分别为100.26%和92.15%。此外,发酵72小时后,该提取物对酪氨酸酶活性的抑制率由29.33%上升到41.74%。未处理的对照组B16F10细胞酪氨酸酶活性增加到145.69%。结果表明,旋覆花发酵提取物对酪氨酸酶活性呈剂量依赖性抑制是促黑激素(α-MSH)的刺激引起。旋覆花植物乳杆菌发酵的提取物可以作为有效的美白材料。

关键词：旋覆花类黄酮植物乳杆菌抗氧化剂酪氨酸酶抑制剂

通过Lactobacillus plantarum KCCM 11613P乳杆菌发酵改善洋甘菊的抗氧化和细胞毒性（英文）

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2017年第2期18卷 152-160页

作者： Eun-Hye PARK Won-Young BAE Su-Jin EOM Kee-Tae KIM hyun-dong paik Department of Food Sctence and Btotechnology of Animal Resources Konkuk University Seoul 05029 Korea Bio/Molecular Informatics Center Konkuk University Seoul 05029 Korea

目的:研究洋甘菊(Matricaria chamomilla)经Lactobacillus plantarum乳杆菌发酵,可以改善其抗氧化和细胞毒性。方法:通过Folin-Denis方法测量酚类物质的总含量(TP);通过二苯代苦味酰肼(DPPH)法和β-胡萝卜素漂白法评价抗氧化活性;通过MT... 详细信息

目的:研究洋甘菊(Matricaria chamomilla)经Lactobacillus plantarum乳杆菌发酵,可以改善其抗氧化和细胞毒性。方法:通过Folin-Denis方法测量酚类物质的总含量(TP);通过二苯代苦味酰肼(DPPH)法和β-胡萝卜素漂白法评价抗氧化活性;通过MTT法测定AGS、He La、Lo Vo、MCF-7和MRC-5(正常)细胞的细胞毒性作用。结论:发酵后洋甘菊的TP含量从21.75 mg GAE/g降至18.76 mg GAE/g(GAE:子酸当量),但是DPPH自由基清除率在发酵72 h后比未发酵的高11.1%。由于发酵期间p H的降低,在β-胡萝卜素漂白之后,其抗氧化效果降低。此外,发酵72 h后的洋甘菊对癌细胞有约95%的细胞毒性作用,但是MRC-5细胞的作用不敏感。这些结果表明,洋甘菊的发酵可用于开发天然抗氧化和抗癌产品。

关键词：乳杆菌(Lactobacillus plantarum) 洋甘菊(Matricaria chamomilla) 类黄酮细胞毒性

Experience of primary intestinal lymphangiectasia in adults: Twelve case series from a tertiary referral hospital

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World Journal of Clinical Cases 2024年第4期12卷 746-757页

作者： Ji Eun Na Ji Eun Kim Sujin Park Eun Ran Kim Sung Noh Hong Young-Ho Kim dong Kyung Chang Department of Internal Medicine Inje University Haeundae Paik HospitalBusan 48108South Korea Department of Medicine Samsung Medical CenterSeoul 06351South Korea Department of Pathology Samsung Medical CenterSeoul 06351South Korea

BACKGROUND While primary intestinal lymphangiectasia(PIL)is considered a rare condition,there have been several reported cases in ***,the absence of clear guidance from diagnosis to treatment and prognosis poses challenges for both physicians and *** To enhance understanding by investigating clinical presentation,diagnosis,treatment,complications,and prognoses in adult PIL *** We enrolled adult patients diagnosed with PIL between March 2016 and September *** primary outcome involved examining the diagnosis and treatment process of these *** secondary outcomes included identifying complications(infections,thromboembolism)and assessing prognoses(frequency of hospitalization and mortality)during the follow-up *** Among the 12 included patients,peripheral edema(100%)and diarrhea(75%)were the main presenting *** tests showed that all the pati-ents exhibited symptoms of hypoalbuminemia and ***,the predominant findings were edema of the small intestine(67%)and ascites(58%).The typical endoscopic finding with a snowflake appearance was observed in 75%of *** the 12 patients,two responded positive-ly to octreotide and sirolimus,and eight who could undergo maintenance therapy discontinued *** due to PIL led to infection in half of the patients,thromboembolism in three patients,and one *** PIL can be diagnosed in adults across various age groups,with different severity and treatment responses among patients,leading to diverse complications and ***,tailored treatments will be *** anticipate that our findings will contribute to the management of PIL,an etiology of protein-losing enteropathy.

关键词： Primary intestinal lymphangiectasia in adults Protein-losing enteropathy Diagnosis Treatment Prognosis

Acetylsalicylic acid for metal stent in malignant distal common bile duct obstruction:A randomized controlled trial

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Hepatobiliary & Pancreatic Diseases International 2022年第5期21卷 493-499页

作者： Jin Ho Choi Kyong Joo Lee Woo hyun paik Namyoung Park Jung Won Chun Sang Hyub Lee Ji Kon Ryu Yong-Tae Kim Department of Internal Medicine Liver Research InstituteSeoul National University College of MedicineSeoulKorea Department of Internal Medicine Yonsei University Wonju College of MedicineWonjuKorea

Background:Endoscopic biliary drainage is the treatment of choice for patients with malignant distal common bile duct ***-expandable metal stents have clinical advantages including an increased duration of patency that may be prolonged by acetylsalicylic acid(ASA)*** aim of this study was to investigate whether ASA had a positive effect on the patency of self-expandable metal stents compared with ***:This prospective,multicenter,double-blinded,and randomized placebo-controlled trial was conducted from October 2017 to May 2020 in *** who underwent palliative endoscopic biliary drainage with self-expandable metal stents for malignant distal bile duct obstruction were enrolled,and allocated to ASA treatment or *** study outcomes were the rate of stent dysfunction at 6 months,duration of stent patency,risk factors for stent dysfunction,and any adverse ***:Interim analysis included 24 and 28 patients in the ASA and placebo groups,*** was no significant difference between the ASA and placebo groups in stent dysfunction(25.0%vs.20.7%,P=0.761)or the duration of stent patency(150.97±10.55 vs.158.07±8.70 days,P=0.497).Six patients experienced suspected ASA-related adverse events,and there was one lethal ***:ASA did not prolong stent *** study was terminated early because of the possibility of serious adverse events related to ASA treatment of these patients receiving palliative care.

关键词： Endoscopic retrograde cholangiopancreatography Self expandable metallic stents Randomized controlled trial Acetylsalicylic acid

Xanthogranulomatous cholecystitis managed by laparotomy may go through troublesome clinical course: Reflection of severe inflammation

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Hepatobiliary & Pancreatic Diseases International 2023年第2期22卷 210-212页

作者： Hee Ju Kim Kwang Yeol paik Department of Surgery Yeoiudo St.Mary’s HospitalCollege of MedicineThe Catholic University of Korea College of MedicineSeoul 07345Korea

To the Editor: Xanthogranulomatous cholecystitis(XGC) is an uncommon inflammatory disease of the gallbladder, and its incidence is reported to be 1.3%-5.2% [1]. XGC is diagnosed by histopathological examination, characterized by severe inflammatory destruction followed by a granulomatous reaction, marked proliferative fibrosis, and infiltration of inflammatory cells [2].

关键词： granuloma cholecystitis inflammation

Concerns about how to simultaneously determine microvascular invasion and pathological response after transarterial chemoembolization before hepatocellular carcinoma surgery

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Hepatobiliary Surgery and Nutrition 2023年第5期12卷 815-817页

作者： Kwang Yeol paik Department of Surgery Yeouido St.Mary’s HospitalThe Catholic University of Korea College of MedicineSeoulKorea

Microvascular invasion(MVI)is classified as the strongest risk factor for recurrence and poor prognosis after surgical treatment of hepatocellular carcinoma(HCC).The same results after liver transplantation reflect ho... 详细信息

关键词： Microvascular invasion(MVI) transarterial chemoembolization(TACE) hepatocellular carcinoma(HCC)

Optical Properties of Laterally Aligned Si Nanowires for Transparent Electronics Applications

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Nano Research 2011年第9期4卷 817-823页

作者： dong hyun Lee Jaeseok Yi Won Woo Lee Ungyu paik John A. Rogers Won II Park Division of Materials Science and Engineering Hanyang University Seoul 133-791 Korea Department of Energy Engineering Hanyang University Seoul 133-791 Korea Department of Materials Science and Engineering Department of Chemistry Department of Mechanical Science and Engineering Beckman Institute and Frederick Seitz Materials Research Laboratory University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA

我们调查了 nanowire (SiNW ) 穿以便在透明电子学探索他们的潜在的适用性的旁边地排列的 Si 的光性质。SiNW 数组展出了好光透明性在可见光谱每 10 m 为 2025 的 NW 密度与 90% 的发射度变化。另外，极化依赖者大小在取决于在事件光和 ... 详细信息

我们调查了 nanowire (SiNW ) 穿以便在透明电子学探索他们的潜在的适用性的旁边地排列的 Si 的光性质。SiNW 数组展出了好光透明性在可见光谱每 10 m 为 2025 的 NW 密度与 90% 的发射度变化。另外，极化依赖者大小在取决于在事件光和 NW 轴的极化之间的角度的 80%95% 的范围在发射度揭示了一个变化。用 SiNWs，我们证明透明晶体管展出好光透明性(比 80% 大) 并且显示出的典型 p 类型 SiNW 晶体管特征。

关键词：硅纳米线阵列光学性质电子应用光学透明性晶体管特性透光率适用性水密度