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Journal of Materials Science & Technology 2022年第7期102卷 224-231页

作者： In Su Jin Bhaskar Parida Jae Woong jung Department of Advanced Materials Engineering for Information and Electronics Kyung Hee University1732 Deogyeong-daeroGiheung-guYongin-siGyeonggi-do 446-701Republic of Korea Integrated Education Institute for Frontier Materials(BK21 Four) Kyung Hee University1732 Deogyeong-daeroGiheung-guYongin-siGyeonggi-do 446-701Republic of Korea

Although all-inorganic perovskites possess suitable bandgap and thermal stability for photovoltaic ap-plications,the unstable film morphologies,and poor moisture stabilities lag behind the organic-inorganic hybrid ***,we demonstrate that high qualityα-csPbI_(2 ) Br films with improved phase sta-bility,high crystallinity,and pinhole-free film morphology was achieved by employing tetramethylammo-nium chloride(TMAcl)as an *** a result,the TMAcl-added csPbI_(2) Br films exhibited high power conversion efficiency of 14.12%with an open-circuit voltage of 1.19 V,a short-circuit current density of 15.08 mA/cm^(2),and a fill factor of *** importantly,the TMAcl addition imparts hydrophobicity to the film surface of csPbI_(2) Br,which delivered excellent stability up to 30 days in the ambient condition and thermal stability at 85℃ for 156 h,***,the TMAcl-added device also exhibited excellent PcE of 27.16%under indoor light source(1000 lux),which presents a promising approach for designing stable but high performance all-inorganic perovskite solar cells.

关键词： Inorganic perovskite solar cells csPbI2Br Additive Tetramethylammonium chloride Efficiency

“Nanospace engineering”by the growth of nano metal-organic framework on dendritic fibrous nanosilica(DFNS)and DFNS/gold hybrids

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Nano Research 2020年第3期13卷 775-784页

作者： Ngoc Minh Tran Soeun jung Hyojong Yoo Department of Materials Science and chemical Engineering Hanyang UniversityAnsanGyeonggi-do15588Republic of Korea

Advanced hybrid nanomaterials(nanohybrids)with unique tailored morphologies and compositions have been used for the target-oriented catalysts due to the structural or supportive properties of each moiety and the synergistic properties of the individual *** rational design and development of nanohybrids by integrating highly porous silica into a nano metal-organic framework(NMOF)are expected to enable unique nanospace engineering in the resulting systems to optimize their utility in the target ***,we report the design and fabrication of advanced nanohybrids composed of dendritic fibrous nanosilica(DFNS)and DFNS/gold(DFNS/Au)hybrids as the core and zinc-based NMOF(Zn-NMOF)as the shell(DFNS@Zn-NMOF)through a solution-based *** combined fibrous morphology of DFNS and micropores of NMOF can be directly employed for nanospace engineering in the resulting multi-compositional and hierarchical systems in a controllable *** DFNS/Au dots@Zn-NMOF nanohybrid shows improved catalytic performance in the Knoevenagel condensation reaction,attributed mainly to the cooperative effect stemming from the suitably organized configurations of each component.

关键词： nanohybrids nanospace engineering dendritic fibrous nanosilica nano metal-organic framework cooperative catalytic performance

Topic Modeling Based Warning Prioritization from change Sets of Software Repository

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Journal of computer Science & Technology 2020年第6期35卷 1461-1479页

作者： jung-Been Lee Taek Lee Hoh Peter In college of Informatics Korea UniversitySeoul 02841Korea college of Knowledge-Based Services Engineering Sungshin UniversitySeoul 02844Korea

Many existing warning prioritization techniques seek to reorder the static analysis warnings such that true positives are provided first. However, excessive amount of time is required therein to investigate and fix prioritized warnings because some are not actually true positives or are irrelevant to the code context and topic. In this paper, we propose a warning prioritization technique that reflects various latent topics from bug-related code blocks. Our main aim is to build a prioritization model that comprises separate warning priorities depending on the topic of the change sets to identify the number of true positive warnings. For the performance evaluation of the proposed model, we employ a performance metric called warning detection rate, widely used in many warning prioritization studies, and compare the proposed model with other competitive techniques. Additionally, the effectiveness of our model is verified via the application of our technique to eight industrial projects of a real global company.

关键词： automated static analysis topic modeling warning prioritization

Development of practical postprocessor for 5-axis machine tool with non-orthogonal rotary axes

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Journal of central South University 2011年第1期18卷 159-164页

作者： jung Hyoun-chul HWANG Jong-Dae PARK Ki-Beom jung Yoon-Gyo School of Mechatronics Changwon National University

In order to develop a practical postprocessor for 5-axis machine tool,the general equations of numerically controlled(Nc) data for 5-axis configurations with non-orthogonal rotary axes were exactly expressed by the inverse kinematics,and a windows-based postprocessor written with Visual Basic was developed according to the proposed *** developed postprocessor is a general system suitable for all kinds of 5-axis machines with orthogonal and non-orthogonal rotary *** implementation of the developed postprocessor and verification by a cutting simulation and machining experiment,the effectiveness of the proposed algorithm is *** is improved by allowing exchange of data formats such as rotational total center position(RTcP) controlled Nc data,vector post Nc data,and program object file(POF) cutter location(cL) data,and convenience is increased by adding the function of work-piece origin ***,a practical post-processor for 5-axis machining is developed.

关键词： post-processor 5-axis machining non-orthogonal rotary axes numerically controlled (Nc) data cL data

Managing the lifecycle of perovskite solar cells: Addressing stability and environmental concerns from utilization to end-of-life

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eScience 2024年第2期4卷 1-27页

作者： Hee jung Kim Gill Sang Han Hyun Suk jung School of Advanced Materials Science&Engineering Sungkyunkwan University2066Seobu-roJangan-guSuwon-siGyeonggi-do 16419Republic of Korea Division of Advanced Materials Korea Research Institute of Chemical Technology(KRICT)Daejeon 34114Republic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwon 16419Republic of Korea

Perovskite solar cells(PScs)have shown remarkable advancements and achieved impressive power conversion efficiencies since their initial introduction in ***,challenges regarding stability,quality,and sustainability must be addressed for their successful commercial *** review analyses the recent studies and challenges related to the operating life and end-of-life utilization of *** to enhance the stability and mitigate the toxic Pb leakage in operational and recycling approaches of discarded PScs post their end-of-life are examined to establish a viable and sustainable PSc ***,future research directions are proposed for the advancements in the PSc *** goal is to ensure high efficiency as well as economic and environmental sustainability throughout the lifecycle of PScs.

关键词： Levelized cost of electricity Metal electrode Pb leakage Perovskite Power conversion efficiency Solar cell life cycle

Parasitic leiomyoma in the trocar site after laparoscopic myomectomy:A case report

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World Journal of clinical cases 2022年第9期10卷 2895-2900页

作者： chul Kyu Roh Hyuk-Jae Kwon Min jung jung Department of Surgery National Police HospitalSeoul 05715South Korea Department of Surgery Ajou University School of MedicineSuwon 16499South Korea Department of Pathology College of MedicineThe Catholic University of KoreaSeoul 06591South Korea

BAcKGROUND Laparoscopic myomectomy is increasingly used for resecting gynecological *** require morcellation for retrieval from the peritoneal ***,morcellated fragments may implant on the peritoneal cavity during *** fragments may receive a new blood supply from an adjacent structure and develop into parasitic *** leiomyomas can occur spontaneously or iatrogenically;however,trocar-site implantation is an iatrogenic complication of laparoscopic uterine *** describe a parasitic leiomyoma in the trocar-site after laparoscopic myomectomy with power *** SUMMARY A 50-year-old woman presented with a palpable abdominal mass without significant medical *** patient had no related symptoms,such as abdominal *** tomography findings revealed a well-defined contrast-enhancing mass measuring 2.2 cm,and located on the trocar site of the left abdominal *** had undergone laparoscopic removal of uterine fibroids with power morcellation six years *** differential diagnosis included endometriosis and neurogenic tumors,such as *** radiologic diagnosis was a desmoid tumor,and surgical excision of the mass on the abdominal wall was successfully *** patient recovered from the surgery without *** examination revealed that the specimen resected from the trocar site was a uterine *** clinicians should consider the risks and benefits of laparoscopic vs laparotomic myomectomy for gynecological *** caution must be exercised for morcellation to avoid excessive tissue fragmentation.

关键词： Laparoscopic myomectomy Parasitic leiomyoma Trocar site Implantation Morcellation case report

The Effect of Fabrication conditions for GDc Buffer Layer on Electrochemical Performance of Solid Oxide Fuel cells

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Nano-Micro Letters 2013年第3期5卷 151-158页

作者： jung-Hoon Song Myung Geun jung Hye Won Park Hyung-Tae Lim Fuel cell Project Research Institute of Industrial Science and Technology (RIST) School of Nano & Advanced Materials Engineering Changwon National University

A Gd-doped ceria（GDc） buffer layer is required between a conventional yttria-stabilized zirconia（YSZ） electrolyte and a La-Sr-co-Fe-O3（LScF） cathode to prevent their chemical reaction. In this study,the effect of varying the conditions for fabricating the GDc buffer layer, such as sintering temperature and amount of sintering aid, on the solid oxide fuel cell（SOFc） performance was investigated. A finer GDc powder（i.e., ultra-high surface area）, a higher sintering temperature（1290℃）, and a larger amount of sintering aid（12%） resulted in improved densification of the buffer layer; however, the electrochemical performance of an anode-supported cell containing this GDc buffer layer was poor. These conflicting results are attributed to the formation of（Zr, ce）O2 and/or excess cobalt grain boundaries（GBs） at higher sintering temperatures with a large amount of sintering aid（i.e., cobalt oxide）. A cell comprising of a cobalt-free GDc buffer layer, which was fabricated using a low-temperature process, had lower cell resistance and higher stability. The results indicate that electrochemical performance and stability of SOFcs strongly depend on fabrication conditions for the GDc buffer layer.

关键词： Solid oxide fuel cell(SOFc) Gd-doped ceria Sintering aid Sol-gel spin coating

A Transfer Function Design for Medical Volume Data Using a Knowledge Database Based on Deep Image and Primitive Intensity Profile Features Retrieval

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Journal of computer Science & Technology 2024年第2期39卷 320-335页

作者： Younhyun jung Jim Kong 盛斌 Jinman Kim School of computing Gachon UniversitySeongnam 13120Korea School of computer Science The University of SydneySydney 2006Australia Department of computer Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Direct volume rendering(DVR)is a technique that emphasizes structures of interest(SOIs)within a volume visually,while simultaneously depicting adjacent regional information,e.g.,the spatial location of a structure concerning its *** DVR,transfer function(TF)plays a key role by enabling accurate identification of SOIs interactively as well as ensuring appropriate visibility of *** generation typically involves non-intuitive trial-and-error optimization of rendering parameters,which is time-consuming and *** at mitigating this manual process have led to approaches that make use of a knowledge database consisting of pre-designed TFs by domain *** these approaches,a user navigates the knowledge database to find the most suitable pre-designed TF for their input volume to visualize the *** these approaches potentially reduce the workload to generate the TFs,they,however,require manual TF navigation of the knowledge database,as well as the likely fine tuning of the selected TF to suit the *** this work,we propose a TF design approach,cBR-TF,where we introduce a new content-based retrieval(cBR)method to automatically navigate the knowledge *** of pre-designed TFs,our knowledge database contains volumes with SOI *** an input volume,our cBR-TF approach retrieves relevant volumes(with SOI labels)from the knowledge database;the retrieved labels are then used to generate and optimize TFs of the *** approach largely reduces manual TF navigation and fine *** our cBR-TF approach,we introduce a novel volumetric image feature which includes both a local primitive intensity profile along the SOIs and regional spatial semantics available from the co-planar images to the *** the regional spatial semantics,we adopt a convolutional neural network to obtain high-level image feature *** the intensity profile,we extend the dynamic time warping technique to address subtle alignment

关键词： data retrieval direct volume rendering ray analysis transfer function

Significance of dysplasia in bile duct resection margin in patients with extrahepatic cholangiocarcinoma:A retrospective analysis

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World Journal of clinical cases 2022年第10期10卷 3078-3087页

作者： jung Wan choe Hyo jung Kim Jae Seon Kim Department of Internal Medicine Korea University Ansan HospitalKorea University College of MedicineAnsan 15355South Korea Department ofInternal Medicine Korea University Guro HospitalKorea University College of MedicineSeoul 08308South Korea Department ofInternal Medicine Korea University Guro Hospital2

BAcKGROUND Radical resection is the only indicator associated with survival in extrahepatic cholangiocarcinoma(EHcc).However,limited data are available regarding the implications of dysplasia at the resection margin following *** To evaluate the prognostic significance of dysplasia-positive margins in patients diagnosed with *** We reviewed the records of patients who had undergone surgery for EHcc with curative intent between January 2013 and July *** retrospectively analyzed the clinicopathological data of 116 patients followed for longer than 3 *** status of resection margin was used to classify patients into negative low-grade dysplasia(LGD)and high-grade dysplasia(HGD)/carcinoma in situ(cIS)*** Based on postoperative status,72 patients underwent resection with negative margins,19 had LGD-positive margins,and 25 showed HGD/cIS-positive *** mean survival rates of the patients with negative margins,LGD margins,and HGD/cIS margins were 49.1±4.5,47.3±6.0,and 20.8±4.4 mo,respectively(Pce in survival was found between groups with LGD margins and negative margins(P=0.56).In the multivariate analysis,age>70 years and HGD/cIS-positive margins were significant independent factors for survival(hazard ratio=1.90 and 2.47,respectively).cONcLUSION HGD/cIS margin in resected EHcc is associated with a poor ***,the LGDpositive resection margin is not a significant indicator of survival in patients with EHcc.

关键词： Dysplasia cholangiocarcinoma Survival Extrahepatic cholangiocarcinoma Low-grade dysplasia High-grade dysplasia

A Sensor Network Web Platform Based on WoT Technology

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computer Systems Science & Engineering 2021年第8期38卷 197-214页

作者： Shun-Yuan Wang Yun-jung Hsu Sung-jung Hsiao Wen-Tsai Sung Department of Electrical Engineering National Taipei University of TechnologyTaipei10608TaiwanChina Department of Information Technology Takming University of Science and TechnologyTaipei11451TaiwanChina Department of Electrical Engineering National Chin-Yi University of TechnologyTaichung41170TaiwanChina

This study proposes a Web platform,the Web of Things(WoT),whose Internet of Things(IoT)architecture is used to develop the technology behind a new standard Web *** a remote sensor passes data to a microcontroller for processing,the protocol is often not *** study proposes a WoT platform that enables the use of a browser in a mobile device to control a remote hardware *** optimized code is written using an artificial intelligencebased algorithm in a *** data convergence technology is adopted to process the packets of different protocols and place them on the Web platform for access by other mobile *** platform has high efficiency and cross-platform advantages,with no limitation on the operating *** queueing telemetry transport(MQTT)technology is used to simplify the original HTTP *** that the mobile device is a subscriber,i.e.,the controller,and a microcontroller that connects the sensing device is the *** publishers and subscribers of MQTT need not know each other if they share a message *** intermediate agent role is much like a *** and subscribers do not need to interact,and publishers do not have to wait for subscriber confirmation to cause interactive permission be *** must publishers and subscribers be online at the same time,and they are free to choose when to get *** proposed WoT method is compared with the traditional IoT method regarding data *** results show that the proposed method can save time in processing large amounts of data,as the traditional IoT method wastes time,especially in data format transfer.

关键词： Embedded systems mobile Web servers big data analysis WoT IoT