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A hardware-based algorithm for virtual machine provisioning in a private cloud

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Journal of Central South University 2014年第11期21卷 4291-4295页

作者： Amol JAIKAR Gyeong-Ryoon KIM Dada HUANG Seo-Young noh Grid and Supercomputing Department University of Science and TechnologyDaejeon National Institute of Supercomputing and Networking Korea Institute of Science and Technology Information

Cloud computing is becoming a key factor in the market day by day. Therefore, many companies are investing or going to invest in this sector for development of large data centers. These data centers not only consume more energy but also produce greenhouse gases. Because of large amount of power consumption, data center providers go for different types of power generator to increase the profit margin which indirectly affects the environment. Several studies are carried out to reduce the power consumption of a data center. One of the techniques to reduce power consumption is virtualization. After several studies, it is stated that hardware plays a very important role. As the load increases, the power consumption of the CPU is also increased. Therefore, by extending the study of virtualization to reduce the power consumption, a hardware-based algorithm for virtual machine provisioning in a private cloud can significantly improve the performance by considering hardware as one of the important factors.

关键词： virtualization virtual machine algorithm power consumption data center

SARS-CoV-2 mutations, vaccines, and immunity: implication of variants of concern

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Signal Transduction and Targeted Therapy 2021年第6期6卷 1638-1639页

作者： Ji Yun noh Hye Won Jeong Eui-Cheol Shin Division of Infectious Diseases Department of Internal MedicineKorea University Guro HospitalKorea University College of MedicineSeoulRepublic of Korea Graduate School of Medical Science and Engineering Korea Advanced Institute of Science and Technology(KAIST)DaejeonRepublic of Korea Division of Infectious Diseases Department of Internal MedicineChungbuk National University College of MedicineCheongjuRepublic of Korea The Center for Epidemic Preparedness KAISTDaejeonRepublic of Korea

In a recent study published in Nature,Wang et al.1 investigated the neutralizing activities of antibodies elicited by COVID-19 mRNA vaccines and natural infection with SARS-CoV-2 against SARS-CoV-2 *** devastating impact of the ongoing COVID-19 pandemic on public health,the economy,and society has made vaccine development a top priority for global ***,vaccine development is progressing at an unprecedented pace as an urgent response to COVID-19.

关键词： immunity vaccines variants

Endoscopic submucosal dissection as alternative to surgery for complicated gastric heterotopic pancreas

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World Journal of Clinical Cases 2020年第20期8卷 4708-4718页

作者： Jin Hee noh Do Hoon Kim So-Woon Kim Young Soo Park Hee Kyong Na Ji yong Ahn Kee Wook Jung Jeong Hoon Lee Kee Don Choi Ho June Song Gin Hyug Lee Hwoon-yong Jung Department of Gastroenterology University of Ulsan College of MedicineAsan Medical CenterSeoul 05505South Korea Department of Pathology University of Ulsan College of MedicineAsan Medical CenterSeoul 05505South Korea

BACKGROUND Gastric heterotopic pancreas(GHP)is generally asymptomatic and rarely features complications such as pancreatitis,pseudocysts,gastric outlet obstruction,bleeding,obstructive jaundice,or ***,the treatment of complicated GHP is challenging and often requires surgical *** To investigate the clinical outcomes of endoscopic submucosal dissection(ESD)as alternative to surgical resection for complicated *** This is a single-center,retrospective *** January 2013 and December 2017,a total of 5 patients underwent ESD for complicated GHP at Asan Medical *** who were diagnosed with complicated GHP were treated conservatively as with general practice for acute *** conservative management for resolving the acute phase of pancreatitis,ESD was performed as definitive treatment for complicated *** was performed using the conventional method under conscious *** clinical features of patients and tumors,procedure-related characteristics,and long-term outcomes were *** The age of the 5 patients ranged from 28-43 *** of the patients were *** lesions were located in the greater curvature of the *** endoscopic ultrasonography during the pain episode,all lesions were located across the muscularis mucosa,submucosa,and proper muscle *** median lesion size was 20[interquartile range(IQR),18-35]during the pain episode at the time of the diagnosis of complicated GHP,and 15 mm(IQR,9-33)at the time of ESD after conservative *** procedure time ranged from 15-120 *** were no procedure-related adverse events such as perforation or *** length of hospital stay after the procedure ranged from 2-4 *** patients were symptom free during the median follow-up period of 46.0 mo(IQR,39-60).CONCLUSION ESD appears to be a feasible and effective treatment option for complicated GHP based on the favorable clinical outcomes.

关键词： Endoscopic submucosal dissection Gastric Heterotopic pancreas Pancreatitis

A Raman Study of the Origin of Oxygen Defects in Hexagonal Manganite Thin Films

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Chinese Physics Letters 2012年第12期29卷 148-151页

作者： CHEN Xiang-Bai HIEN Nguyen Thi Minh YANG In-Sang LEE Daesu noh Tae-Won Department of Nano Science&Mechanical Engineering and Nanotechnology Research Center Konkuk UniversityChungju 380-701Korea 2Department of Physics and Division of Nano-SciencesEwha Womans UniversitySeoul 120-750Korea 3ReCFIDepartment of Physics and AstronomySeoul National UniversitySeoul 151-747Korea

Oxygen defects are usually unavoidable when synthesizing oxide thin *** study the origin of the oxygen defects in hexagonal manganite HoMnO_(3) epitaxial thin films through Raman scattering *** results show that the oxygen defects in hexagonal HoMnO_(3) thin films have distinct effects on different phonon modes and on magnon *** analyses indicate that the oxygen defects in hexagonal HoMnO_(3) thin films mainly originate from the basal O3 and/or O4 oxygen ***,our analyses of oxygen defects predict that the Mn 3d orbitals would be more strongly hybridized with the apical O1 and/or O22p orbitals than the basal O3 and/or O42p *** prediction is consistent with our resonant Raman scattering study and earlier first-principle calculations of the electronic structures of hexagonal manganites.

关键词： spectroscopy. hexagonal Oxygen

Development of fault section identification technique for low voltage DC distribution systems by using capacitive discharge current

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Journal of Modern Power Systems and Clean Energy 2018年第3期6卷 509-520页

作者： Chul-Ho noh Chul-Hwan KIM Gi-Hyeon GWON Yun-Sik OH College of Information and Communication Engineering Sungkyunkwan University

The increasing importance of energy efficiency has led to several studies related to the construction of a reliable low voltage DC(LVDC) distribution ***, studies on a protection scheme that considers the fault characteristics of an LVDC distribution system are essential to improve system reliability. When compared to a conventional distribution system, the most distinct feature of an LVDC distribution system is the existence of a capacitive discharge current from converters under a fault condition that results in the prompt operation of protection devices. Therefore, this study involves proposing a precise and rapid technique to identify the fault section in an LVDC distribution system. The technique involves two stages, namely: an analysis stage to analyze the capacitive discharge current and a decision stage to identify the fault section based on the fault type. A detailed discussion of each step is presented and its feasibility is verified based on the results of simulations with an ElectroMagnetic Transients Program and MATLAB~?.

关键词： Capacitive discharge current Fault section identification Fault type identification Low voltage DC distribution system

Performance evaluations on inner vs. outer decomposition first parallel join algorithms for two nested loop joins

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Journal of Central South University 2014年第10期21卷 3873-3882页

作者： Seo-Young noh Heejun YOON Il-Yeon YEO Yoon-su JEONG Hyungwoo PARK National Institute of Supercomputing and Networking Korea Institute of Science and Technology Information Department of Information Communication Engineering Mokwon University

Two popular traditional join algorithms and their parallel versions are introduced. When designing join algorithms in serial computing environment, decomposing inner relation is considered as the right direction to save disk I/Os. However, two different decomposition algorithms are compared, such as inner vs. outer decomposition first algorithms for tuple-based and block-based nested loop joins, showing that the proposed approach is 20% better than general approach. Also lemmas are proved, when we have to use the outer decomposition first parallel join algorithms.

关键词： parallel join performance inner decomposition outer decomposition

Implanting a preferential solid electrolyte interphase layer over anode electrode of lithium ion batteries for highly enhanced Li^+ diffusion properties

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Journal of Energy Chemistry 2020年第9期29卷 285-292,I0009页

作者： Ye Kyu Kim Yoongon Kim Jaejin Bae Hyunwoo Ahn Yuseong noh Hyunsu Han Won Bae Kim Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)Nam-gu 37673PohangSouth Korea

The lithium-ion batteries are recognized as the most promising energy storage system,but it still does not meet the power requirements of electric vehicle batteries owing to low volumetric energy density with the traditional graphite electrode *** this study,we report the development of a novel electrode system fabricated by implantation of a solid electrolyte interphase(SEI)layer on the graphite *** SEI-implanted graphite electrode is made using a lithium bis(trifluoromethanesulfonyl)imide(LiTFSI)-based electrolyte and cycled with a lithium tetrafluoroborate LiBF4-based *** new electrode system shows significantly enhanced electrochemical properties owing to the rapid and efficient diffusion of Li ions through the SEI layer between the electrolyte and *** graphite electrode with its pre-formed SEI layer achieves a reversible capacity of 357 mAh g^-1 at 0.5 C after 50 cycles,which is significantly higher than that of commercial lithium-ion battery systems constructed with LiPF6(312mAh g^-1).The resulting unique electrode system could present a new avenue in SEI research for highperformance lithium-ion batteries.

关键词： SEI layer Graphite Implanting Li ion diffusion LiTFSI LiBF4 Artificial Mobility

SARS-CoV-2-induced liver injury:A review article on the high-risk populations,manifestations,mechanisms,pathological changes,management,and outcomes

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World Journal of Gastroenterology 2022年第39期28卷 5723-5730页

作者： Alvin Oliver Payus Malehah Mohd noh Nornazirah Azizan Raman Muthukaruppan Chettiar Department of Medicine Faculty of Medicine and Health SciencesUniversiti Malaysia SabahKota Kinabalu 88400SabahMalaysia Department of Pathobiology and Medical Diagnostic Faculty of Medicine and Health SciencesUniversiti Malaysia SabahKota Kinabalu 88400Malaysia Department of Medicine Hospital Queen Elizabeth Ⅰ13aJalan PenampangKota Kinabalu 88200Malaysia

The novel coronavirus disease 2019 is an infection caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)and was declared a global pandemic with more than 500 million reported cases and more than 6 million deaths worldwide to *** it has transitioned into the endemic phase in many countries,the mortality rate and overall prognosis of the disease are still abysmal and need further *** has been evidence that shows the significance of SARS-CoV-2-related liver ***,we review the literature on the various spectrum of SARS-CoV-2 infection-induced liver injury and the possible mechanisms of damage to the hepatobiliary *** review aimed to illustrate the latest understanding regarding SARS-CoV-2-induced liver injury including the high-risk populations,the characteristic clinical manifestations,the possible pathogenic mechanism,the pathological changes,the current suggestions for clinical treatment for various spectrum of populations,and the prognosis of the *** conclusion,SARS-CoV-2 patients with a liver injury warrant close monitoring as it is associated with the more severe and poorer outcome of the infection.

关键词： COVID-19 SARS-CoV-2 Pandemic Liver injury Pandemics Prognosis

Mechanical properties of Cu matrix composite fabricated by extrusion process

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Transactions of Nonferrous Metals Society of China 2016年第10期26卷 2679-2686页

作者： Ji-Hun PAK Gwi-Nam KIM sung-Gu HWANG Beom-Su KIM Jung-Pil noh sun-Chul HUH Department of Mechanical and Precision Engineering Gyeongsang National University Department of Mechanical System Engineering Gyeongsang National University Department of Mechanical and Energy Engineering Gyeongsang National University

Carbon nanotube （CNT）was applied in various fields for itssuperior electrical, mechanical and thermal characteristics. After composites were fabricated by extrusion processusing ball-milledCu-CNT powders, mechanicalpropertiesofCu-CNT composites according to CNT fraction were reviewed. CNT （1%, 5% and 10%）,Cu （d=100 nm）, zirconia balls （90 g） and ethanol （20mL） were mixed and dispersed for5h at a speed of 500 r/minusing a planetary ball mill. A billet （d=50 mm, length=100 mm） was made with Cu, and the composite powderswerefilled up into billet using the uni-axial press. In the extrusion process, after the billet was heated at 880℃for1h, specimens were produced in the shape of a round bar using the billet by applying a load of 200 t. The composite powdersweremeasured for particle size byparticlesize distributionequipment. Then the specimen surface fabricated by extrusion was observed by SEM. Mechanicalpropertiesmeasured by the indentation equipment increased with increasing CNT content. The yield strength, tensile strength and hardness of theCu–CNTs composites canbeobviously improved.

关键词： extrusion milling indentation matrix mechanical properties microstructure