논문실적

Journal Papers

4단계 BK21사업 3차년도 SCIE 논문 실적

관리자l2023-05-23l 조회수 244


4단계 BK21사업 3차년도 SCIE 논문 실적
- 3차년도 사업기간 : 2022.03.01.~2023.02.28.
------------------------------------------------------------------------------------------------------------------
A novel T-shaped sensor cluster for acoustic source localization
Qiang GaoJun Young JeonGyuhae Park , Yunde Shen and Jiawei Xiang 
Structural Health Monitoring, Volume 21, Issue 2, 2022-03

 

Biomimetic Nano-Pine-Pollen Structure-Based Surface-Enhanced Raman Spectroscopy Sensing Platform for the Hypersensitive Detection of Toxicants: Cadmium and Amyloid

Woong Kim, Wonseok Lee, Hyunjun Park, Joohyung Park, Woochang Kim, Byungjeon Kang, Eunpyo Choi, Chang-Sei Kim, Jong-Oh Park, Gyudo Lee, Doyeon Bang* and Jinsung Park*

ACS Sustainable Chemistry & Engineering. 2022, 10, 10, 3180–3190, 2022-03-14

 

2D Magnetic Actuation and Localization of a Surface Milli-Roller in Low Reynolds Numbers

Mina M. Micheal, Alaa Adel, Chang-Sei Kim, Jong-Oh Park, Sarthak Misra and Islam S. M. Khalil

IEEE ROBOTICS AND AUTOMATION LETTERS, VOL. 7, NO. 2, 2022-04

 

Electrically, Thermally, and Mechanically Anisotropic Gels with a Wide Operational Temperature Range

Van Tron Tran, Md. Tariful Islam Mredha, Yoonseong Lee, Mitsugu Todo, Hongyun So, Eunju Jeong, Woosung Park, Insu Jeon

Advanced Functional Materials, Volume 32, Issue 14, 2110177, 2022-04-04

 

Compressive laser scanning with full steady state wavefield for structural damage detection

Jun Young Jeon, Yinan Miao, Gyuhae Park, Eric Flynn

Mechanical Systems and Signal Processing, Volume 169, 108626, 2022-04-15

 

Beamforming using non-equidistant linear array for acoustic source localization

Qiang Gao, Jun Young Jeon, Gyuhae Park, Yeseul Kong, Yunde Shen and Jiawei Xiang

Journal of Intelligent Material Systems and Structures, Volume 33, Issue 8, 2022-05

 

Experimental measurement and modeling of film thickness distribution in film insert injection molding process

Showmik Azam & Bong-Kee Lee

The International Journal of Advanced Manufacturing Technology, volume 120, pages1347–1357 (2022), 2022-05

 

Simultaneous measurement of contraction forces and field potentials of cardiomyocytes subjected to ion channel inhibitors

Ziqi Zhao , Yun-Jin Jeong, Nomin-Erdene Oyunbaatar, Rahul B. Pujari, Pooja P. Kanade, Eung-Sam Kim, Bong-Kee Lee, Dong-Weon Lee

Sensors and Actuators B: Chemical, Volume 358, 131495, 2022-05-01

 

Nanosilica coated polydimethylsiloxane mushroom structure: A next generation flexible, transparent, and mechanically durable superhydrophobic thin film

Chae Rin Yu, Arunkumar Shanmugasundaram and Dong-Weon Lee 

Applied Surface Science, Volume 583, 152500, 2022-05-01

 

Role of heat treatment in improving replication quality of PDMS double-casting

Shichen LiSon Van Nguyen and Bong-Kee Lee

Soft Matter, Issue 18, 2022, 2022-05-14

 

Polyvinyl alcohol/cellulose nanocrystals/alkyl ketene dimer nanocomposite as a novel biodegradable food packing material

Son Van Nguyen, Bong-Kee Lee

International Journal of Biological Macromolecules, Volume 207, Pages 31-39, 2022-05-15

 

The effect of topographical and mechanical stimulation on the structural and functional anisotropy of cardiomyocytes grown on a circular PDMS diaphragm

Abdullah-Bin Siddique, Arunkumar Shanmugasundaram, Jong Yun Kim, Amir Roshanzadeh, Eung-Sam Kim, Bong-Kee Lee, Dong-Weon Lee

Biosensors and Bioelectronics, Volume 204, 114017, 2022-05-15

 

A Comparative Study of an Anti-Thrombotic Small-Diameter Vascular Graft with Commercially Available e-PTFE Graft in a Porcine Carotid Model

Kyo Seon LeeMukhammad KayumovGladys A EmechebeDo-Wan KimHwa-Jin ChoYun-Jin JeongDong-Weon LeeJun-Kyu ParkChan-Hee ParkCheol-Sang KimFrancis O ObiweluozorIn-Seok Jeong

Tissue Engineering and Regenerative Medicine,19(3):537-551, 2022-06

 

Removal Efficiency of PM10 via Ventilation with Residential Exhaust Hood and Conditions for Reducing Human Intake Fraction

Na Kyong Kim, Dong Hee Kang, Wonoh Lee & Hyun Wook Kang

Environmental Modeling & Assessment, volume 27, pages461–472 (2022), 2022-06

 

Acoustofluidic Stimulation of Functional Immune Cells in a Microreactor

Seunggyu KimHyeono NamBeomseok ChaJinsoo ParkHyung Jin SungJessie S. Jeon

Advanced Science, Volume 9, Issue 16, 2022-06-03

 

Process modeling of hybrid sulfur thermochemical cycle combined with solid oxide fuel cell/gas turbine system

Gonzalo A. Almeida Pazmiño, Seunghun Jung, Sung-Hee Roh

Energy Conversion and Management, Volume 262, 115669, 2022-06-15

 

Highly dispersed aramid nanofiber-reinforced epoxy nanocomposites by the sequential solvent-exchange method

Huynh Thanh Tung, Guk Hwan Lee, Van Hoang Luan, Sungmook Lim, Hyun Wook Kang & Wonoh Lee

Advanced Composite Materials(Online), Volume 32, 2023 - Issue 3, 2022-06-16

 

High-Harmonic Generation Using a Single Dielectric Nanostructure

Seunghwoi Han

Photonics 2022, 9(6), 427, 2022-06-17

 

Magnetically controlled reversible shape-morphing microrobots with real-time X-ray imaging for stomach cancer applications

Bobby Aditya Darmawan,  Dohoon Gong, Hyeongyu ParkSongah Jeong,  Gwangjun Go, Seokjae Kim, Kim Tien NguyenShirong ZhengMinghui NanVan Du NguyenDoyeon BangChang-Sei KimHyungwoo Kim, Jong-Oh Park and  Eunpyo Choi

Journal of Materials Chemistry B, Issue 23, 2023, 2022-06-21

 

A Multi-Segmented Soft Finger Using Snap-Through Instability of a Soft Valve With a Slit

Tongil Park , Eunpyo Choi , Chang-Sei Kim , Jong-Oh Park, and Ayoung Hong

IEEE Robotics and Automation Letters, Volume 7, Issue 3, 6990-6997, 2022-07

 

Shape-Tunable UV-Printed Solid Drugs for Personalized Medicine

Bobby Aditya DarmawanSang Bong LeeMinghui NanVan Du NguyenJong-Oh ParkEunpyo Choi 

Polymers, 14(13):2714. 2022-07-02

 

Self-Immolative and Amphiphilic Poly(benzyl ether)-Based Copolymers: Synthesis and Triggered Demicellization via Head-toTail Depolymerization

Ji Woo Kim, Hea Ji Kim, Jieun Park, Ji Ae Chae, Hyeong-Woo Song, Eunpyo Choi, and Hyungwoo Kim*

Macromolecules, 55, 14, 6140–6149, 2022-07-14

 

Holographic Acoustic Tweezers for 5-DoF Manipulation of Nanocarrier Clusters toward Targeted Drug Delivery

Hiep Xuan Cao, Daewon Jung, Han-Sol Lee, Van Du Nguyen, Eunpyo Choi, Byungjeon Kang, Jong-Oh Park and Chang-Sei Kim

Pharmaceutics 2022, 14(7), 1490, 2022-07-18

 

Multiple-input and multiple-output force control for automobile component road simulation using model predictive control with proportional–integral–derivative

Hong-Cheol NaHai-Bo YuanGyuhae Park, and Young-Bae Kim

Journal of Vibration and Control, Volume 28, Issue 15-16, 2022-08

 

Optimized magnetic field control of an electromagnetic actuation system for enhanced microrobot manipulation

Manh Cuong Hoang, Jayoung Kim, Jong-Oh Park, Chang-Sei Kim

Mechatronics, Volume 85, 102830, 2022-08

 

State-of-charge estimation using data fusion for vanadium redox flow battery

Xiaobo Zhao, Kangsan Kim, Seunghun Jung

Journal of Energy Storage, Volume 52, Part A, 104852, 2022-08-01

 

Electronically Tuned Defective Prussian-blue on Graphene for Electrochemical Water Splitting

Halima Begum, Seunghun Jung

International Journal of Hydrogen Energy, Volume 47, Issue 67, Pages 28752-28762, 2022-08-05

 

Residue-free acoustofluidic manipulation of microparticles via removal of microchannel anechoic corner

Muhammad Soban Khan, Mehmet Akif Sahin, Ghulam Destgeer, Jinsoo Park 

Ultrasonics Sonochemistry, Volume 89, 106161, 2022-09

 

A Novel Integrated Spoon-chopsticks Mechanism for a Meal Assistant Robotic System

Rongwan Chen, Tae-Keun Kim, Jung-Hoon Hwang & Seong Young Ko

International Journal of Control, Automation and Systems, volume 20, pages3019–3031 (2022), 2022-09

 

A composite electro-permanent magnetic actuator for microrobot manipulation

Kim Tien Nguyen, Han-Sol Lee, Jayoung Kim, Eunpyo Choi, Jong-Oh Park, Chang-Sei Kim 

International Journal of Mechanical Sciences, Volume 229, 107516, 2022-09-01

 

Multiphase, multidimensional modeling of proton exchange membrane water electrolyzer

Xiao Qian, Kangsan Kim, Seunghun Jung

Energy Conversion and Management, Volume 268, 116070, 2022-09-15

 

A Real-Time Rule-Based Energy Management Strategy With Multi-Objective Optimization for a Fuel Cell Hybrid Electric Vehicle

Hai-Bo Yuan, Wen-Jiang Zou, Seunghun Jung, Young-Bae Kim

IEEE Access, Volume 10, 102618-102628, 2022-09-21

 

Thermal catalytic device for toluene decomposition via direct heating

Hyeonjin Eom, Seunghwan Ahn, Na Kyong Kim, Hyun Wook Kang

Environmental Engineering Research, Volume 28(4), 2022-09-28(Online Publication date)

 

Remotely Manipulated Peg-in-Hole Task Conducted by Cable-Driven Parallel Robots

Min-Cheol KimHongseok ChoiJinlong PiaoEui-sun KimJong-Oh ParkChang-Sei Kim

IEEE/ASME Transactions on Mechatronics, Volume: 27, Issue: 5, 3953-3963, 2022-10

 

Monitoring Argon L-Shell Auger Decay Using 250-eV Attosecond X-ray Pulses

Seunghwoi Han,  Kun Zhao and Zenghu Chang

Sensors 2022, 22(19), 7513, 2022-10-03

 

Acoustically Driven Cell-Based Microrobots for Targeted Tumor Therapy

Hiep Xuan Cao, Van Du Nguyen,Daewon Jung,Eunpyo Choi, Chang-Sei Kim, Jong-Oh Park, and Byungjeon Kang

Pharmaceutics 2022, 14(10), 2143, 2022-10-09

 

Self-rollable Polymer Stent Integrated with Wireless Pressure Sensor for Real-time Monitoring of Cardiovascular Pressure

Nomin-Erdene Oyunbaatar, Dong-Su Kim, Gajula Prasad, Yun-Jin Jeong, Dong-Weon Lee

Sensors and Actuators A: Physical, Volume 346, 113869, 2022-10-16

 

Evaluation of the Reliability and Lifetime Prediction of 150 GHz Athermal AWG Module with Metal Temperature Compensation Board

Kwang-Su Yun, Chong-Hee Yu, Kwon-Seob Lim, Wan-Chun Kim, Su-Yong Kim and Insu Jeon

Processes 2022, 10(10), 2120, 2022-10-18

 

Redundant Electromagnetic Control of an Endoscopic Magnetic Capsule Driven by Multiple Electromagnets Configuration

Jayoung Kim, Han-Sol Lee, Manh Cuong Hoang, Seonghwan Jeong, Jae-Seung Kim, Cheong Lee, Byungjeon Kang, Jonghee Lee, Young-Don Son, Seungmin Bang, Eunpyo Choi, Jong-Oh Park, and Chang-Sei Kim

IEEE Transactions on Industrial Electronics, Volume: 69Issue: 11, 11370-11382, 2022-11

 

Flowing water-based tubular triboelectric nanogenerators for sustainable green energy harvesting

Karthikeyan Munirathinam, Dong-Su Kim, Arunkumar Shanmugasundaram, Jongsung Park, Yun-Jin Jeong, Dong-Weon Lee

Nano Energy, Volume 102, 107675, 2022-11

 

Microrobot with Gyroid Surface and Gold Nanostar for High Drug Loading and Near-Infrared-Triggered Chemo-Photothermal Therapy

Shirong ZhengManh Cuong HoangVan Du NguyenGwangjun Go, Minghui NanBobby Aditya DarmawanSeokjae KimSeung-Hyun ImTaeksu LeeDoyeon BangJong-Oh Park, Eunpyo Choi

Pharmaceutics, 14(11):2393, 2022-11-06

 

Stress induced self-rollable smart-stent-based U-health platform for in-stent restenosis monitoring

Dong-Su Kim,  Nomin-Erdene Oyunbaatar, Arunkumar ShanmugasundaramYun-Jin JeongJongsung Park  and  Dong-Weon Lee

Analyst, Issue 21, Page 4631 to 4934, 2022-11-07

 

Toward Point-of-Care chronic disease Management: Biomarker detection in exhaled breath using an E-Nose sensor based on rGO/SnO2 superstructures

Arunkumar Shanmugasundaram, Sunkara V Manorama, Dong-Su Kim, Yun-Jin Jeong, Dong Weon Lee

Chemical Engineering Journal, Volume 448, 137736, 2022-11-15

 

MEA-integrated cantilever platform for comparison of real-time change in electrophysiology and contractility of cardiomyocytes to drugs

Pooja P. Kanade, Nomin-Erdene Oyunbaatar, Arunkumar Shanmugasundaram, Yun-Jin Jeong, Eung-Sam Kim, Bong-Kee Lee, Dong-Weon Lee

Biosensors and Bioelectronics, Volume 216, 114675, 2022-11-15

 

Facile generation of crumpled polymer strips by immersion electrospinning for oil spill cleanups

Shichen Li, Bong-Kee Lee

Journal of Colloid and Interface Science, Volume 626, Pages 581-590, 2022-11-15

 

A convex-deformable sandwich panel for mobile devices

Yoon Chang Jeong, Eun-Byeol Park, and Kiju Kang

Journal of Sandwich Structures & Materials, Volume 25, Issue 3, 2022-11-16(Online Publication date)

 

Transparent, Robust, and Photochemical Antibacterial Surface Based on Hydrogen Bonding between a Si-Al and Cationic Dye

Ki Joon Heo, Dong Uk Lee, Jae Hak Shin, Junghun Park, Byeong Jin Lee, Juhun Shin, Sang Bin Jeong, Gi Byoung Hwang, Alexander J. MacRobert, Ivan P. Parkin*, Jae Hee Jung*, and Dong Yun Choi*

ACS Appl. Mater. Interfaces, 14, 47, 53285–53297, 2022-11-17

 

Multifunctional microrobot with real-time visualization and magnetic resonance imaging for chemoembolization therapy of liver cancer

Gwangjun Go, Ami Yoo, Kim Tien Nguyen , Minghui Nan , Bobby Aditya Darmawan , Shirong Zheng, Byungjeon Kang, Chang-Sei Kim, Doyeon Bang, Seonmin Lee, Kyu-Pyo Kim, Seong Soo Kang, Kyung Mi Shim, Se Eun Kim, Seungmin Bang, Deok-Ho Kim, Jong-Oh Park, Eunpyo Choi
SCIENCE ADVANCES
, VOL. 8, NO. 46, 2022-11-18

 

Development of graphene oxide hybridized high-performance elastomeric nanocomposites with enhanced mechanical and thermomechanical properties

Nitai Chandra Adak, Suman Chhetri, Naresh Chandra Murmu, Pranab Samanta, Tapas Kuila & Wonoh Lee

Advanced Composite Materials(Online), 2022-11-23

 

A novel marker for robust and accurate phase-based 2D motion estimation from noisy image data

Yinan Miao, Yeseul Kong, Jun Young Jeon, Hyeonwoo Nam, Gyuhae Park

Mechanical Systems and Signal Processing, Volume 187, 109931, 2022-11-24(Online Publication date)

 

Hydrogen generation characteristics of reduced DME steam reforming catalysts according to heating methods

Tie-Qing Zhang, Seunghun Jung and Young-Bae Kim

Energies 2022, 15(23), 9038, 2022-11-29

 

Hydrogen Production System through Dimethyl Ether Autothermal Reforming, Based on Model Predictive Control

Tie-Qing Zhang, Seunghun Jung and Young-Bae Kim

Energies 2022, 15(23), 9038, 2022-11-29

 

Delivery of human natural killer cell-derived exosomes for liver cancer therapy: an in vivo study in subcutaneous and orthotopic animal models

Ho Yong KimHyun-Ki MinHyeong-Woo SongAmi YooSeonmin LeeKyu-Pyo KimJong-Oh ParkYou Hee ChoiEunpyo Choi 

DRUG DELIVERY, 29(1):2897-2911, 2022-12

 

Tumor-derived extracellular vesicles for the active targeting and effective treatment of colorectal tumors in vivo

Van Du Nguyen, Ho Yong Kim, You Hee Choi, Jong-Oh Park, Eunpyo Choi

Drug Delivery, 29(1):2621-2631, 2022-12

 

Gold-sapphire nanostructures for coherent extreme-ultraviolet pulse generation

Seunghwoi Han

Current Optics and Photonics, Vol. 6, Issue 6, pp. 576-582 (2022), 2022-12

 

State of charge estimation of lithium-ion battery based on multi-input extreme learning machine using online model parameter identification

Xiaobo Zhao, Xiao Qian, Dongji Xuan, Seunghun Jung

Journal of Energy Storage, Volume 56, Part A, 105796, 2022-12-01

 

Efficient CoMoRu0.25Ox/NF nanoplate architectures for overall electrochemical water splitting

Dhandayuthapani Thiyagarajan, Arun Thirumurugan, Bong-Kee Lee

International Journal of Hydrogen Energy, Volume 47, Issue 94, Pages 39908-39916, 2022-12-05

 

Fabrication, Acoustic Characterization and Phase Reference-Based Calibration Method for a Single-Sided Multi-Channel Ultrasonic Actuator

Hiep Xuan Cao, Daewon Jung, Han-Sol Lee, Van Du Nguyen, Eunpyo Choi, Chang-Sei Kim, Jong-Oh Park, and Byungjeon Kang

Micromachines 2022, 13(12), 2182, 2022-12-09

 

PVA/CNC/TiO2 nanocomposite for food-packaging: Improved mechanical, UV/water vapor barrier, and antimicrobial properties

Son Van Nguyen, Bong-Kee Lee

Carbohydrate Polymers, Volume 298, 120064, 2022-12-15

 

Surface and diffusive capacity controlled electrochemistry in nickel boride/nickel borate

Vinit Kaluram Kanade, Chaitanya Kaluram Kanade, Rahul B. Pujari, Dong Weon Lee, Girish Sambhaji Gund, Taesung Kim

Journal of Industrial and Engineering Chemistry, Volume 116, Pages 351-358, 2022-12-25

 

The Electro-Thermal Antimicrobial Carbon Surface

Ki Joon Heo, Yeawan Lee, Sang Bok Kim, Yong-Jin Kim, Bangwoo Han, Hak-Joon Kim

IEEE Transactions on Industry Applications, Volume: 59, Issue: 1, 2023-01

 

Rapid remodeling observed at mid-term in-vivo study of a smart reinforced acellular vascular graft implanted on a rat model

Francis O. Obiweluozor, Mukhammad Kayumov, Yujin Kwak, Hwa-Jin Cho, Chan-Hee Park, Jun-kyu Park, Yun-Jin Jeong, Dong-Weon Lee, Do-Wan Kim & In-Seok Jeong

Journal of Biological Engineering, volume 17, Article number: 1 (2023), 2023-01-03

 

A novel auxetic sandwich panel for use in structural applications: Fabrication and parametric study

Eun Byeol Park, Yoon Chang Jeong, Kiju Kang

Materials Today Communications, Volume 34, 105383, 2023-01-10(Online Publication date)

 

Application of market-based control with thermal energy storage system for demand limiting and real-time pricing control

Icksung Kim, Woohyun Kim

Energy, Volume 263, Part A, 125579, 2023-01-15

 

Macroscopic spray characteristics and internal structure studies of natural gas injection

Quangkhai Pham, Mengzhao Chang, Ankur Kalwar, Avinash Kumar Agarwal, Sungwook Park, Byungchul Choi, Suhan Park 

Energy, Volume 263, Part E, 126055, 2023-01-15

 

Wearable Localized Surface Plasmon Resonance-Based Biosensor with Highly Sensitive and Direct Detection of Cortisol in Human Sweat

Minghui Nan, Bobby Aditya Darmawan, Gwangjun Go, Shirong Zheng, Junhyeok Lee, Seokjae Kim, Taeksu Lee, Eunpyo Choi, Jong-Oh Park and Doyeon Bang

Biosensors 2023, 13(2), 184, 2023-01-24

 

Updated Minimum Weighted Norm based Electromagnetic Field Control for a Magnetically Actuated Microrobot

Jayoung Kim, Han-Sol Lee, Cheong Lee, Seonghwan Jeong, Jong-Oh Park & Chang-Sei Kim

International Journal of Control, Automation and Systems, volume 21, pages935–947, 2023-01-28

 

Ultrasonic surface acoustic wave-assisted separation of microscale droplets with varying acoustic impedance

Mushtaq Ali, Jinsoo Park

Ultrasonics Sonochemistry, Volume 93, 106305, 2023-02

 

3D-printed cardiovascular polymer scaffold reinforced by functional nanofiber additives for tunable mechanical strength and controlled drug release

Yun-Jin Jeong, Songah Jeong, Seokjae Kim, Hea Ji Kim, Juyeong Jo, Arunkumar Shanmugasundaram, Hyungwoo Kim, Eunpyo Choi, Dong-Weon Lee

Chemical Engineering Journal, Volume 454, Part 2, 140118, 2023-02-15

 

Multifunctional food packaging polymer composites based on polyvinyl alcohol/cellulose nanocrystals/apple peel extract

Son Van Nguyen & Bong-Kee Lee

Cellulose, volume 30, pages1697–1716, 2023-02

 

Multifunctional nanocomposite based on polyvinyl alcohol, cellulose nanocrystals, titanium dioxide, and apple peel extract for food packaging

Son Van Nguyen, Bong-Kee Lee

International Journal of Biological Macromolecules, Volume 227, Pages 551-563, 2023-02-01

 

Impact Localization Using Nonequidistant T-Shaped Sensor Clusters

Qiang Gao, Jun Young Jeon, Jiawei Xiang, and Gyuhae Park

IEEE SENSORS JOURNAL, VOL. 23, NO. 3, 2023-02-01

 

Surface properties of concrete and bonding strength of pine resin-based adhesives to concrete surfaces

Se-Eon Park, Jeong-Il Choi, Sungho Lee, Eung-Sam Kim, Bong-Kee Lee and Bang Yeon Lee

Advances in Civil Engineering, 2023-02-08

 

Magnetically Actuated Microscaffold with Controllable Magnetization and Morphology for Regeneration of Osteochondral Tissue

Junhyeok Lee, Hyeong-Woo Song, Kim Tien Nguyen3 Seokjae Kim, Minghui Nan, Jong-Oh Park, Gwangjun Go and Eunpyo Choi

Micromachines 2023, 14(2), 434, 2023-02-11

 

Yttria-doped Ceria Surface Modification Layer via Atomic Lay-er Deposition for Low-Temperature Solid Oxide Fuel Cells

Hyeontaek Kim, Yongchan Park, Davin Jeong and Soonwook Hong

Coatings 2023, 13(3), 491, 2023-02-23

 

Silver and Samaria-doped Ceria (Ag-SDC) Cermet Cathode for Low-Temperature Solid Oxide Fuel Cells

Davin Jeong, Yonghyun Lim, Hyeontaek Kim, Yongchan Park and Soonwook Hong

Nanomaterials 2023, 13(5), 886, 2023-02-27

 

TOP
닫기
비밀번호를 입력하세요.