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| WoS | SCOPUS | Document Type | Document Title | Abstract | Authors | Affiliation | ResearcherID (WoS) | AuthorsID (SCOPUS) | Author Email(s) | Journal Name | JCR Abbreviation | ISSN | eISSN | Volume | Issue | WoS Edition | WoS Category | JCR Year | IF | JCR (%) | FWCI | FWCI Update Date | WoS Citation | SCOPUS Citation | Keywords (WoS) | KeywordsPlus (WoS) | Keywords (SCOPUS) | KeywordsPlus (SCOPUS) | Language | Publication Stage | Publication Year | Publication Date | DOI | JCR Link | DOI Link | WOS Link | SCOPUS Link |
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| ○ | ○ | Proceedings Paper | Outline-Dependent Screen-Space Ambient Occlusion | Ambient Occlusion is a great post-process illumination method to enhance realistic visuals in 3D real-time rendered scenes. Its approximate indirect lighting calculation is considered as an essential, especially for concave, detailed corners. However, its operation on non-occluded surfaces often leads to considerable performance waste. This paper presents a straightforward solution to address this problem, by highlighting places of interest where Ambient Occlusion is likely to occur. Potential occlusion can be examined by checking contact surfaces where meshes are close to each other. With our algorithm, renderers can avoid unwanted surplus computations, achieving moderate performance improvement. Rendering tests are done in Windows 10 PC with NVIDIA GeForce GTX 1070 graphics card and Intel (R) Core (TM) i7-6700 K 4.00 GHz CPU. | Park, Sukjun; Baek, Nakhoon | Kyungpook Natl Univ, Sch Comp Sci & Engn, Daegu 41566, South Korea; Kyungpook Natl Univ, Software Technol Res Ctr, Daegu 41566, South Korea; Dassomey Com Inc, Daegu 41566, South Korea | 57212930681; 7007017954 | pos02232@gmail.com;oceancru@gmail.com; | INFORMATION SCIENCE AND APPLICATIONS | 1876-1100 | 1876-1119 | 621 | 0 | 2025-06-25 | 0 | 0 | Ambient occlusion; Screen space; Outline; Masking | Ambient occlusion; Masking; Outline; Screen space | Germanium compounds; Speech intelligibility; Ambient occlusion; Contact surface; Graphics card; Illumination method; Indirect lightings; Outline; Post process; Screen space; Rendering (computer graphics) | English | 2020 | 2020 | 10.1007/978-981-15-1465-4_20 | 바로가기 | 바로가기 | 바로가기 | |||||||||||
| ○ | ○ | Article | Over-the-wire deployment techniques of option elite inferior vena cava filter: 3D printing vena cava phantom study | Purpose: To compare filter tilt and filter jumping during Option inferior vena cava (IVC) filter deployment with 3 different wires techniques using a 3-dimensional (3D) printing vena cava phantom. Materials and methods: An IVC 3D printed vena cava phantom was made from a healthy young male's computed tomographic data. Option IVC filters were deployed with 3 different wires: i) original push wire, ii) hydrophilic stiff wire, and iii) bent stiff wire. Right internal jugular and right femoral access were used 5 times with each wire. Filter tilt angle, tilt ratio, jumping, and tip abutment to the IVC wall were analyzed. Results: The transfemoral approach with original push wire had significantly higher tilt angle than did the transjugular approach (6.1 degrees +/- 1.9 vs. 3.5 degrees +/- 1.3, p = 0.04). Mean tilt ratio was significantly lower with the bent wire with transfemoral access (0.49 +/- 0.13 vs. 0.78 +/- 0.18 [original push-wire] and 0.67 +/- 0.08 [stiff wire], p = 0.019). The ratio was lower also with original push wire with transjugular access (0.34 +/- 0.19 vs. 0.57 +/- 0.11 [stiff wire] and 0.58 +/- 0.17 [bent wire], p = 0.045). Filter jumping occurred more often with the transjugular approach with original push wire than with stiff or bent-wire delivery. Filter tip abutment to the IVC wall occurred only with the transfemoral approach. Conclusions: Bent wire with transfemoral access and original push wire with transjugular access had lower filter tilt ratio at Option IVC filter deployment. However, filter jumping was common using the original push wire with transjugular access. | Park, Byung Geon; Seo, Anna; Lee, Sang Yub; Cha, Jung Guen; Hong, Jihoon; Lee, Hoseok; Heo, Jun; Do, Young Woo | Kyungpook Natl Univ Hosp, Dept Radiol, Daegu, South Korea; Gachon Univ Med & Sci, Lee Gil Ya Canc & Diabet Inst, Incheon, South Korea; Kyungpook Natl Univ, Sch Med, Dept Radiol, 680 Gukchaebosang Ro, Daegu 41944, South Korea; Kyungpook Natl Univ, Sch Med, Dept Internal Med, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Thorac & Cardiovasc Surg, Daegu, South Korea | ; Lee, Joo/C-3851-2013 | 57211532915; 59428909300; 56016177400; 57206855971; 57215858314; 57200653487; 36448170600; 57189600352 | sangyub@knu.ac.kr; | EUROPEAN JOURNAL OF RADIOLOGY OPEN | EUR J RADIOL OPEN | 2352-0477 | 7 | ESCI | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | 2020 | N/A | 0.26 | 2025-06-25 | 5 | 4 | 3D printing vena cava phantom; Option IVC filter; Filter tilt; Filter jumping; Over-the-wire deployment system | INTRODUCER CURVING TECHNIQUE; GUNTHER TULIP; VENOUS THROMBOEMBOLISM; COMPLICATIONS; CELECT; RETRIEVABILITY; EXPERIENCE; MORTALITY; IVC | 3D printing vena cava phantom; Filter jumping; Filter tilt; Option IVC filter; Over-the-wire deployment system | iohexol; nitinol; angiography; aortic bifurcation; arteriography; Article; body temperature; comparative study; computer assisted radiography; cone beam computed tomography; elongation; Filter tilt angle; flexibility; human; image reconstruction; image segmentation; implantation; jumping; male; physical parameters; priority journal; retrospective study; tear resistance; three dimensional printing; tilt ratio; tip abutment; transcatheter aortic valve implantation; transfemoral access | English | 2020 | 2020 | 10.1016/j.ejro.2020.100227 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Overhead Labour Costs in a Neo-Kaleckian Growth Model with Autonomous Non-Capacity Creating Expenditures | A notable feature of income distribution is the widening wage differential among workers: there is a redistribution in favour of managers at the detriment of ordinary workers. The paper incorporates this distinction between overhead managerial labour and direct labour into a neo-Kaleckian growth model with target-return pricing, where an autonomously growing demand component ultimately determines the long-run path of an economy. Our aim is to explore the role of overhead labour costs in the coevolution of income distribution and economic growth. We find that the profit share becomes an increasing function of the rate of capacity utilization, implying that empirical research based on the post-Kaleckian specification of investment is likely to be biased in finding a profit-led regime. Our model also features convergence to a fully adjusted position. We examine the parametric conditions under which the model achieves a wage-led growth regime in the long run, in the restricted sense that both the average rates of accumulation and utilization decrease during the transitional dynamics arising from an upward adjustment of the normal profit rate. Moreover, it is shown that a more equitable wage distribution between managers and ordinary workers will strengthen the wage-led nature of the economy. | Lavoie, Marc; Nah, Won Jun | Univ Ottawa, Ottawa, ON, Canada; Univ Sorbonne Paris Nord, CEPN, Villetaneuse, France; Kyungpook Natl Univ, Daegu, South Korea | 35775352400; 36497335900 | mlavoie@uottawa.ca; | REVIEW OF POLITICAL ECONOMY | REV POLIT ECON | 0953-8259 | 1465-3982 | 32 | 4 | ESCI | ECONOMICS | 2020 | N/A | 0.9 | 2025-06-25 | 7 | 9 | Neo-Kaleckian; growth; overhead labour; autonomous expenditures; target-return pricing | DEMAND; PROFIT; INCOME; WAGE; INEQUALITY; LEVEL | autonomous expenditures; growth; Neo-Kaleckian; overhead labour; target-return pricing | English | 2020 | 2020-10-01 | 10.1080/09538259.2020.1810875 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | Article | Oxidation Behaviors of Co, Cr, and Ni Nanopowders: A Real-Time Synchrotron X-ray Scattering Study | We have studied the oxidation behaviors of Co, Cr, and Ni nanopowders for applications in biomedicine using a real-time synchrotron X-ray scattering in air. The Co nanopowders have a crystal domain size of 70 nm at room temperature (RT). The surface of the Co nanopowders was oxidized to CoO phase at RT. The interior of the Co nanopowders was rapidly oxidized at above 300 degrees C and was mostly oxidized above 550 degrees C. The Cr nanopowders have a crystal domain size of 92 nm at RT. The surface of the Cr nanopowders was oxidized to Cr2O3 phase at RT, but the interior of the nanopowders was present as Cr phase without being oxidized up to 650 degrees C. On the other hand, the Ni nanopowders have a crystal domain size of 93 nm at RT. The surface of the Ni nanopowders began to oxidize to Ni2O3 phase at 300 degrees C, and the interior of the nanopowders was mostly oxidized above 600 degrees C. | Park, Sae-Heum; Lee, Jang-Hyeong; Cho, Tae-Sik | Kyungpook Natl Univ, Dept Nano Mat Sci & Engn, Sangju 37224, South Korea; Korea Conform Labs, Daegu & Gyeongbuk Branch, Daegu 42994, South Korea | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 1533-4880 | 1533-4899 | 20 | 1 | 2 | Co Nanopowder; Cr Nanopowder; Ni Nanopowder; Oxidation Behaviors; Real-Time Synchrotron X-ray Scattering | MAGNETIC NANOPARTICLES; PHASE | English | 2020 | 2020-01 | 10.1166/jnn.2020.17277 | 바로가기 | 바로가기 | ||||||||||||||||||
| ○ | ○ | Article | Palliative Measures with Ethanol Gallbladder Ablation and Endobiliary Radiofrequency Ablation Followed by Endoscopic Biliary Stent Placement in an Advanced Case of Common Bile Duct Cancer: A Case Report | Endobiliary radiofrequency ablation (RFA) is a procedure performed widely to induce locoregional tumor control by the transfer of thermal energy to the lesion and subsequent tumor necrosis. A 72-year-old male with a prior history of acute calculous cholangitis and perforated cholecystitis was admitted to the Kyungpook National University Hospital complaining of fever and nausea. He had an indwelling percutaneous transhepatic gallbladder drainage (PTGBD) catheter from the previous episode of perforated cholecystitis. An abdominal CT scan showed marked dilation of both the intrahepatic and extrahepatic bile ducts. Common bile duct cancer was confirmed histologically after an endobiliary biopsy. A surgical resection was considered to be the initial treatment option. During open surgery, multiple metastatic nodules were present in the small bowel mesentery and anterior abdominal wall. Resection of the tumor was not feasible, so endobiliary RFA was performed prior to biliary stenting. Cholecystectomy was required for the removal of the PTGBD catheter, but the surgical procedure could not be performed due to a cystic ductal invasion of the tumor. Instead, chemical ablation of the gallbladder (GB) with pure ethanol was performed to breakdown the GB mucosa. Palliative treatment for a biliary obstruction was achieved successfully using these procedures. In addition, a PTGBD catheter was removed successfully without significant side effects. As a result, an improvement in the patient's quality of life was accomplished. | Lee, Yong-woo; Kim, Hyun Jeong; Lee, Sang Yub; Heo, Jun; Jung, Min Kyu | Kyungpook Natl Univ, Sch Med, Dept Internal Med, Daegu, South Korea; Kyungpook Natl Univ Hosp, Dept Internal Med, Div Gastroenterol & Hepatol, 130 Dongdeok Ro, Daegu 41944, South Korea; Kyungpook Natl Univ, Sch Med, Dept Radiol, Daegu, South Korea | ; Lee, Joo/C-3851-2013; Kim, Young/T-8521-2019 | 57214233658; 57203389523; 56016177400; 36448170600; 56783168100 | minky1973@hanmail.net; | KOREAN JOURNAL OF GASTROENTEROLOGY | 1598-9992 | 2233-6869 | 75 | 1 | 0.16 | 2025-06-25 | 2 | 2 | Gallbladder; Radiofrequency ablation; Cholangiocarcinoma; Cholangiopancreatography; endoscopic retrograde | Cholangiocarcinoma; Cholangiopancreatography; endoscopic retrograde; Gallbladder; Radiofrequency ablation | Aged; Bile Duct Neoplasms; Catheter Ablation; Cholangiocarcinoma; Cholangiopancreatography, Endoscopic Retrograde; Ethanol; Gallbladder; Humans; Male; Stents; Tomography, X-Ray Computed; alcohol; aged; bile duct cancer; bile duct carcinoma; case report; catheter ablation; endoscopic retrograde cholangiopancreatography; gallbladder; human; male; stent; x-ray computed tomography | English | 2020 | 2020-01 | 10.4166/kjg.2020.75.1.50 | 바로가기 | 바로가기 | 바로가기 | |||||||||
| ○ | Book chapter | Park Chung Hee (1917-1979) | [No abstract available] | Kim, Jinwung | Kyungpook National University, Taegu, South Korea | 58929938100 | The Cold War: the Definitive Encyclopedia and Document Collection: Volume 1-5 | 1-5 | 0 | 2025-06-25 | 0 | English | Final | 2020 | 바로가기 | ||||||||||||||||||||||
| ○ | ○ | Article | Patch aortoplasty and anatomical lung resection in a patient with aortobronchial fistula due to aortic psuedo-aneurysm | Aortobronchial fistula (ABF) is a rare and devastating complication, if left untreated. Its main clinical manifestation is hemoptysis, and there are no defined guidelines for its treatment yet. Herein, we present the case of a 74-year-old male who complained of back pain and hemoptysis. The patient was diagnosed with pseudo-aneurysm and ABF, and he underwent hybrid thoracic endovascular aortic repair. However, hemoptysis recurred. With patch aortoplasty and anatomical lung resection, successful management of ABF was achieved, with no relapse for 5 years. | Son, Shin-Ah; Lee, Deok Heon; Kim, Gun-Jik | Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Sch Med, Dept Thorac & Cardiovasc Surg, 130 Dongdeok Ro, Daegu, South Korea | 57197328338; 39561353900; 22234444300 | straightroot@knu.ac.kr; | INDIAN JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY | INDIAN J THORAC CARD | 0970-9134 | 0973-7723 | 36 | 4 | ESCI | CARDIAC & CARDIOVASCULAR SYSTEMS | 2020 | N/A | 0 | 2025-06-25 | 0 | 0 | Aorta; Endovascular procedure; Stent graft; Hemoptysis | EUROPEAN REGISTRY; REPAIR | Aorta; Endovascular procedure; Hemoptysis; Stent graft | English | 2020 | 2020-07 | 10.1007/s12055-020-00939-8 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | Review | Pathogen-induced Defense Strategies in Plants | Plants are the ultimate producers of this ecosystem and effect human life directly and/or indirectly. However, being sessile organisms, plants are susceptible to several adverse environmental conditions and pathogen ingress resulting in huge losses to yield and productivity. Therefore, plans are continuously evolving complex regulatory networks to respond to these environmental changes. Due to its impact on pre- and post-harvest losses, biotic stress is of great concern to plant scientists. Interpreting the underlying mechanism of plant response to biotic stresses is therefore of great importance. A brief account about these hostile conditions and plants responses towards them is described in this review. © 2020, Korean Society of Crop Science and Springer. | Imran, Qari Muhammad; Yun, Byung-Wook | Laboratory of Plant Functional Genomics School of Applied Biosciences, Kyungpook National University, Daegu, South Korea; Laboratory of Plant Functional Genomics School of Applied Biosciences, Kyungpook National University, Daegu, South Korea | 55849263700; 8245123600 | bwyun@knu.ac.kr; | Journal of Crop Science and Biotechnology | 1975-9479 | 23 | 2 | 0.26 | 2025-06-25 | 10 | Basal defense; effector-triggered immunity | English | Final | 2020 | 10.1007/s12892-019-0352-0 | 바로가기 | 바로가기 | ||||||||||||||||
| ○ | ○ | Article | Perception of Korean Speech-Language Pathologists on Telepractice Service | Objectives: Telepractice is the application of telecommunication technologies in health and medical services. This survey study focused on Korean Speech-Language Pathologists' (K-SLPs) perception of telepractice service. Methods: 321 K-SLPs participated in this survey. The survey consisted of the respondents' basic information, and their experiences, perception, future direction and needs regarding telepractice, the survey data were analyzed using descriptives statistics and chi-squared tests. Results: Only 19 of the respondents used telepractice. Most of them were willing to participate education programs. Respondents with more clinical experience were more likely to think that telepractice is not equivalent to traditional therapy. And they also tended to think that the use of telepractice depends on the characteristics of clients. Respondents felt that reading and fluency disorders were the most appropriate subjects, and swallowing disorder and hearing impairment were the least appropriate for telepractice. The subject's cognitive and behavioral characteristics were selected as the most important consideration for telepractice. Conclusion: This study will improve the perception of K-SLPs regrading telepractice, and provide practical information and directions necessary for building a new system. | Kim, Na Yeon; Ha, Ji-Wan; Park, Ki-Su; Lee, GilJoon; Park, Su Na; Bae, Ye-Seul | Daegu Univ, Grad Sch Rehabil, Dept Speech & Language Pathol, Gyongsan, South Korea; Daegu Univ, Dept Speech Language Pathol, 201 Daegudae Ro, Gyongsan 38453, South Korea; Kyungpook Natl Univ, Sch Med, Dept Neurosurg, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Otorhinolaryngol Head & Neck Surg, Daegu, South Korea; Kyungpook Natl Univ, Chilgok Hosp, Dept Otorhinolaryngol, Daegu, South Korea; Neopons Inc, Daegu, South Korea | 57072206000; 57072470300; 55932363100; 57193082568; 57221789901; 57221780128 | jw-ha@daegu.ac.kr; | COMMUNICATION SCIENCES AND DISORDERS-CSD | COMMUN SCI DISORD-CS | 2288-1328 | 2288-0917 | 25 | 4 | ESCI | AUDIOLOGY & SPEECH-LANGUAGE PATHOLOGY | 2020 | N/A | 0.9 | 2025-06-25 | 6 | 6 | Telepractice; Korean speech-language pathologist (K-SLP); Survey | TELEHEALTH; DELIVERY; THERAPY; TRIAL | Korean speech-language pathologist (K-SLP); Survey; Telepractice | Korean | 2020 | 2020-12 | 10.12963/csd.20776 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | Article | Perception to Adaptation of Climate Change in Nepal: An Empirical Analysis Using Multivariate Probit Model | This study assessed farmers’ perception of climate change, and estimated the determinants of, and evaluated the relationship among, adaptation practices using the multivariate probit model. A survey in 300 agricultural households was carried out covering 10 sample districts considering five agro-ecological zones and a vulnerability index. Four adaptation choices (change in planting date, crop variety, crop type and investment in irrigation) were deemed as outcome variables and socioeconomic, demographic, institutional, farm-level and perceptions variables were deployed as explanatory variables. Their marginal effects were determined for three climatic variables—temperature, precipitation and drought. Age, gender and education of head of household, credit access, farm area, rain-fed farming and tenure, were found to be more influential compared to other factors. All four adaptation options were found to be complimentary to each other. Importantly, the intensity of the impact of dependent variables in different models, and for the available adaptation options, were found to be unequal. Therefore, policy options and support facilities should be devised according to climatic variables and adaptation options to achieve superior results. © 2020 by the authors. | GC, Arun; Yeo, Jun-Ho | Department of Agricultural Economics, Kyungpook National University, 80 Daehakro, Daegu, 41566, South Korea; Department of Agricultural Economics, Kyungpook National University, 80 Daehakro, Daegu, 41566, South Korea | 58036224300; 58036849100 | jhyeo@knu.ac.kr; | Sci | 2413-4155 | 2 | 4 | 0.45 | 2025-06-25 | 16 | adaptation; climate change; multivariate probit; Nepal; perception | English | Final | 2020 | 10.3390/sci2040087 | 바로가기 | 바로가기 | ||||||||||||||||
| ○ | ○ | Article | Percutaneous portal vein embolization for intractable hepatic biloma after radiofrequency ablation | Intrahepatic biloma is a rare complication of radiofrequency ablation (RFA). When present, it can only be conservatively managed. Here, we report the case of a patient with hepatocellular carcinoma complicated by an intractable biloma after RFA. The biloma could not be managed via percutaneous catheter drainage and antibiotic administration for over 3 months. The intractable biloma was finally cured using percutaneous transhepatic portal vein embolization. The present case demonstrates a useful treatment option for intractable biloma after RFA. | Cha, Jung Guen; Lee, Sang Yub; Ryeom, Hun Kyu; Hong, Jihoon; Tak, Won Young; Jang, Se Young; Kweon, Young-Oh; Park, Soo Young; Lee, Yu Rim | Kyungpook Natl Univ, Sch Med, Dept Radiol, 680 Gukchaebosang Ro, Daegu 41944, South Korea; Kyungpook Natl Univ, Sch Med, Dept Internal Med, 680 Gukchaebosang Ro, Daegu 41944, South Korea | Lee, Joo/C-3851-2013; Kim, Jin Hyoung/AAE-8050-2019 | 57206855971; 56016177400; 6505864513; 57215858314; 7004074582; 57202881977; 7004694832; 57191674344; 57194094753 | specialwent@naver.com;lsyrad@gmail.com;hkryeom@knu.ac.kr;blushain@gmail.com;wytak@knu.ac.kr;magnolia1103@naver.com;yokweon@knu.ac.kr;psyoung0419@gmail.com;deblue00@naver.com; | EUROPEAN JOURNAL OF RADIOLOGY OPEN | EUR J RADIOL OPEN | 2352-0477 | 7 | ESCI | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | 2020 | N/A | 0 | 2025-06-25 | 1 | 0 | Radiofrequency ablation; Biloma; Hepatocellular carcinoma; Percutaneous catheter drainage; Transhepatic portal vein embolization | BILE LEAKAGE; RESECTION | Biloma; Hepatocellular carcinoma; Percutaneous catheter drainage; Radiofrequency ablation; Transhepatic portal vein embolization | alanine aminotransferase; antibiotic agent; aspartate aminotransferase; bilirubin; C reactive protein; enbucrilate; gelatin sponge; iodinated poppyseed oil; abdominal pain; adult; Article; artificial embolization; biloma; blood cell count; case report; chronic kidney failure; clinical article; computer assisted tomography; fever; follow up; hepatic portal vein; hepatitis B; hepatitis C; human; liver cell carcinoma; liver cirrhosis; male; middle aged; percutaneous drainage; portal phlebography; priority journal; radiofrequency ablation; recurrent disease | English | 2020 | 2020 | 10.1016/j.ejro.2020.100300 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | Article | Performance Analysis of Closed-Loop Degaussing on Magnetization Change of a Ship | In this paper, the performance of the proposed closed-loop degaussing technique is analyzed through testing a mockup replicating a magnetic field condition of a ship due to the variation of on-board equipment's or hull's magnetization. In order to change a magnetic field condition of the mockup, a certain electric current is applied to triaxial coils installed in a nonmagnetic laboratory. Before and after the artificial field condition, degaussing current values are respectively derived from closed-loop degaussing algorithm and then applied to individual degaussing coils. The effectiveness of the proposed degaussing technique is verified by comparison of the magnitude of field signals generated on a certain depth of water. | Mun, Jaegyeong; Kwak, Yejin; Yoon, HaeKyun; Kim, Dong-Hun; Yang, Chang-Seob; Chung, Hyun-Ju | Kyungpook Natl Univ, Dept Elect Engn, Daegu 41566, South Korea; Agcy Def Dev, R&D Inst 3 6, Jinhae POB 18, Chang Won 51678, South Korea | dh29kim@ee.knu.ac.kr; | JOURNAL OF THE KOREAN MAGNETICS SOCIETY | J KOREAN MAGN SOC | 1598-5385 | 2233-6648 | 30 | 4 | ESCI | PHYSICS, APPLIED | 2020 | N/A | 0 | degaussing; magnetization; magnetic field; optimum design | Korean | 2020 | 2020-08 | 10.4283/jkms.2020.30.4.134 | 바로가기 | 바로가기 | 바로가기 | ||||||||||||
| ○ | Conference paper | Performance Analysis of Fingerprint Matching Algorithms for Indoor Localization | Localization using Wi-Fi received signal strength indication (RSSI) signals gives accurate user position results for indoor localization when the RSSI signals from Wi-Fi access points (APs) cover the entire localization area. The most popular localization algorithm used in the Wi-Fi RSSI signal based localization systems is the Wi-Fi fingerprinting and it uses different fingerprint matching algorithms for user position estimation. In this paper, we propose a comparative analysis of different fingerprint matching algorithms for Wi-Fi RSSI signal based localization systems. In the analysis, we used nearest neighbour (NN), k-nearest neighbors algorithm (kNN), weighted k -nearest neighbour (wkNN) and Bayesian fingerprint matching algorithms for user position estimation. The performance of these fingerprint matching algorithms is discussed in terms of average localization error and probability distribution of localization error. The experiment results show that the wkNN fingerprint matching algorithm gives high position accuracy as compared to other fingerprint matching algorithms. The results from the NN fingerprint matching algorithm has high localization error and is not suitable for Wi-Fi RSSI signal based localization systems. © 2020 IEEE. | Poulose, Alwin; Han, Dong Seog | School of Electronics Engineering, Kyungpook National University, Daegu, South Korea; School of Electronics Engineering, Kyungpook National University, Daegu, South Korea | 57205504085; 7403219442 | 2020 International Conference on Artificial Intelligence in Information and Communication, ICAIIC 2020 | 4.01 | 2025-06-25 | 41 | Bayesian; fingerprint maps; fingerprint matching algorithm; indoor localization; kNN; NN; RSSI; Wi-Fi indoor localization; wkNN | Artificial intelligence; Biometrics; Errors; Mobile computing; Nearest neighbor search; Pattern matching; Probability distributions; Wireless local area networks (WLAN); Comparative analysis; Fingerprint matching algorithm; K-nearest neighbours; Localization algorithm; Performance analysis; Received signal strength indication; Wi-fi access points; Wi-Fi fingerprinting; Indoor positioning systems | English | Final | 2020 | 10.1109/icaiic48513.2020.9065220 | 바로가기 | 바로가기 | |||||||||||||||||||
| ○ | Article | Performance comparison for multi-dimensional index structures of rdf data | The development of semantic web poses new challenges for RDF (resource description framework) data retrieval performance. How to efficiently manage RDF data has become an important research direction in the past decade. Multi-dimensional indexing structures are gaining more acceptance as a major solution. This paper proposes a solution to improve retrieval performance by utilizing M-tree indexing structure. Meanwhile, performance comparison and analysis are performed in initialization and retrieval with mainstream RDF index structures. Compared with other index structures, M-tree shows stable performance both in initialization and retrieval. Through experimental data, we confirmed the possibility of improving the performance by minimizing the index space overlap and minimizing the node radius. © 2020 Pushpa Publishing House, Prayagraj, India. | Yun, Seulgi; Tianyi, Zhao; Lee, Yongju | School of Computer Science and Engineering, Kyungpook National University, Daegu, South Korea; School of Computer Science and Engineering, Kyungpook National University, Daegu, South Korea; School of Computer Science and Engineering, Kyungpook National University, Daegu, South Korea | 57217043241; 58256874700; 57207015176 | JP Journal of Heat and Mass Transfer | 0973-5763 | 2020 | Special Issue 1 | 0 | 2025-06-25 | 0 | K-dimensional tree; Linked data; M-tree; RDF | English | Final | 2020 | 10.17654/hmsi120001 | 바로가기 | 바로가기 | |||||||||||||||||
| ○ | ○ | Proceedings Paper | Performance evaluation of commercial ion-selective electrodes for hydroponic cultivation system | The performance evaluation of commercial ion-selective electrodes (ISE) is important for real-time, ion-based nutrient management in hydroponic crop cultivation systems as the fabrication, ion-sensing membrane's composition and contamination, storage duration, ion interference, use time, and solution types of ISE cause sensing errors. In this research, the performance of K+, NO3-, and Ca2+ ion-selective electrodes were evaluated in regard to measurement error, potential drift, and calibration for building an effective nutrient management system. A recycle-type aeroponic nutrient management test bench was designed and fabricated. The K+, NO3-, and Ca2+ ISE were attached and tested in the ion-sensing chamber of that test bench. A LabVIEW-coded program and NI-DAQ device were used for data collection. The measurement error percentage was checked in five different levels of nutrient solution. ISE sensors were immersed into a known nutrient level solution for 15 days to check the potential drift trends, and a two-point calibration technique was applied to minimize error effects. A linear relationship was found while testing the measurement error of K+, NO3-, and Ca2+ ISE in five different levels of nutrient solution, where R-2 and RMSE were 0.98, 36.86 ppm; 0.99, 22.25 ppm, and 0.99, 12.94 ppm, respectively. The ISE showed continuous upward (R-2=0.94, RMSE=54.66 ppm), upward (R-2=0.85, RMSE=1.24 ppm), and downward (R-2=0.86, RMSE=4.53 ppm) potential drifts, respectively. Two-point calibration to reduce errors showed R-2 values of 0.99, 0.99 and 0.99 for K+, NO3-, and Ca2+ ISE, respectively. These results indicated that the performance of commercial ISE needs to be evaluated for improved real-time nutrient ion monitoring in hydroponic cultivation systems. | Chowdhury, M.; Jang, B. E.; Kabir, M. S. N.; Lee, D. H.; Kim, H. T.; Park, T. S.; Chung, S. O. | Chungnam Natl Univ, Dept Biosyst Machinery Engn, Daejeon, South Korea; Gyeongsang Natl Univ, Dept Biosyst Machinery Engn, Jinju, South Korea; Kyungpook Natl Univ, Dept Bioind Machinery Engn, Daegu, South Korea | ; Kabir, Shaha/Q-9599-2019; Chowdhury, Milon/LCE-8404-2024; Park, Tusan/C-2057-2012 | 56409077200; 57203753523; 58566136600; 55541929900; 8662923200; 57202780408; 7404293469 | sochung@cnu.ac.kr; | INTERNATIONAL SYMPOSIUM ON ADVANCED TECHNOLOGIES AND MANAGEMENT FOR INNOVATIVE GREENHOUSES, GREENSYS2019 | 0567-7572 | 2406-6168 | 1296 | 0.52 | 2025-06-25 | 6 | 8 | hydroponics; nutrient ions sensing; ion-selective electrodes; sensing errors | WATER; MANAGEMENT; ARRAY | Hydroponics; Ion-selective electrodes; Nutrient ions sensing; Sensing errors | English | 2020 | 2020 | 10.17660/actahortic.2020.1296.105 | 바로가기 | 바로가기 | 바로가기 |
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