检索结果-南通市图书馆

User Interface-Based Repeated Sequence Detection Method for Authentication

在线全文

学校读者我要写书评

暂无评论

Intelligent Automation & Soft Computing 2023年第3期35卷 2573-2588页

作者： Shin Jin Kang Soo kyun kim School of Games Hongik UniversitySejong30016Korea Department of Computer Engineering Jeju National UniversityJeju63243Korea

In this paper,we propose an authentication method that use mouse and keystroke dynamics to enhance online privacy and *** proposed method identiﬁes personalized repeated user interface(UI)sequences by analyzing mouse and keyboard *** this end,an Apriori algorithm based on the keystroke-level model(KLM)of the human–computer interface domain was *** proposed system can detect repeated UI sequences based on KLM for authentication in the *** effectiveness of the proposed method is veriﬁed through access test-ing using commercial applications that require intensive UI *** results show using our cognitive mouse-and-keystroke dynamics system can com-plement authentication at the application level.

关键词： Authentication keystroke-level model(KLM) keystroke mouse dynamics

Image Translation Method for Game Character Sprite Drawing

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2022年第5期131卷 747-762页

作者： Jong-In Choi Soo-kyun kim Shin-Jin Kang Department of Digital Media Seoul Women’s UniversitySeoul01797Korea Computer Engineering Jeju National UniversityJeju63243Korea School of Games Hongik UniversitySejong30016Korea

Two-dimensional(2D)character animation is one of the most important visual elements on which users’interest is focused in the game ***,2D character animation works in the game field are mostly performed manually in two dimensions,thus generating high production *** study proposes a generative adversarial network based production tool that can easily and quickly generate the sprite images of 2D ***,we proposed a methodology to create a synthetic dataset for training using images from the real world in the game resource production field where machine learning datasets are *** addition,we have enabled effective sprite generation while minimizing user input in the process of using the *** this end,we proposed a mixed input method with a small number of segmentations and skeletal bone *** proposed image-to-image translation network effectively generated sprite images from the user input images using the skeletal *** conducted an experiment regarding the number of images required and showed that 2D sprite resources can be generated even with a small number of segmentation inputs and one skeletal bone drawing.

关键词： Sprite generation body segmentation pose estimation generative adversarial network deep learning

Deposition and Characterization of (Ba, Sr)RuO3 Oxide Electrode Using TMHD-Based Single Cocktail Source

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Rare Earths 2004年第Z2期22卷 8-12页

作者： Hyun Chul kim kyung Il Hong Young Bae kim Duck kyun Choi Department of Ceramic Engineering Hanyang University17 Haengdang-dongSeongdong-kuSeoul 133-791Korea Department of Ceramic EngineeringHanyang University17 Haengdang-dongSeongdong-kuSeoul 133-791Korea Department of Ceramic EngineeringHanyang University17 Haengdang-dongSeongdong-kuSeoul 133-791Korea Department of Ceramic EngineeringHanyang University17 Haengdang-dongSeongdong-kuSeoul 133-791Korea

(Ba, Sr)RuO3 has been paid an attention as a promising electrode for (Ba, Sr)TiO3 dielectric material due to its similarity in structure and chemical composition with BST. In this study, (Ba, Sr)RuO3 conductive oxide film was deposited on a 4 inch p-type Si wafer by metal organic chemical vapor deposition (MOCVD) using single cocktail source for the practical device application. Ba(TMHD)2, Sr(TMHD)2, Ru(TMHD)3 precursors and solvent [1-EtylePiPerdine (C7H15 N) ] as starting materials were mixed together for single cocktail source. A liquid delivery system (LDS) and a vaporization cell were utilized for the delivery and vaporization of single cocktail source, respectively. The source feeding rate was controlled by a liquid mass flow controller (LMFC). Deposition parameters, such as the oxygen flow and the source flow rate,were sensitive to phase formation, resistivity and the composition ratio of (Ba, Sr)RuO3 films. Highly (110)-textured (Ba,Sr)RuO3 film was obtained vhen the Ar/O2 ratio was 200/140 sccm at a source flow rate of 0.05 sccm. The process window of stoichiometric composition of BSR film was observed with varying the source flow rate from 0.05 sccm to 0.1 sccm.

关键词： (Ba, Sr)RuO3 (Ba, Sr)TiO3 MOCVD liquid delivery system(LDS) nozzle type injector

Roles of hepatocyte nuclear factors in hepatitis B virus infection

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2016年第31期22卷 7017-7029页

作者： doo Hyun kim Hong Seok Kang kyun-Hwan kim Department of Pharmacology and Center for Cancer Research and Diagnostic Medicine IBST School of Medicine Konkuk University KU Open Innovation Center Konkuk University Research Institute of Medical Science Konkuk University

Approximately 350 million people are estimated to be persistently infected with hepatitis B virus(HBV) worldwide. HBV maintains persistent infection by employing covalently closed circular DNA(ccc DNA), a template for all HBV RNAs. Chronic hepatitis B(CHB) patients are currently treated with nucleos(t)ide analogs such as lamivudine, adefovir, entecavir, and tenofovir. However, these treatments rarely cure CHB because they are unable to inhibit ccc DNA transcription and inhibit only a late stage in the HBV life cycle(the reverse transcription step in the nucleocapsid). Therefore, an understanding of the factors regulating ccc DNA transcription is required to stop this process. Among numerous factors, hepatocyte nuclear factors(HNFs) play the most important roles in ccc DNA transcription, especially in the generation of viral genomic RNA, a template for HBV replication. Therefore, proper control of HNF function could lead to the inhibition of HBV replication. In this review, we summarize and discuss the current understanding of the roles of HNFs in the HBV life cycle and the upstream factors that regulate HNFs. This knowledge will enable the identification of new therapeutic targets to cure CHB.

关键词： Hepatitis B virus Hepatocyte nuclear factor Covalently closed circular DNA Replication

2.47 GPa grade ultra-strong 15Co-12Ni secondary hardening steel with superior ductility and fracture toughness

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2021年第7期66卷 36-45页

作者： Young-kyun kim Kyu-Sik kim Young-Beum Song Jung Hyo Park Kee-Ahn Lee Department of Materials Science and Engineering Inha UniversityIncheon22212Republic of Korea Agency for Defense Development(ADD) Yuseong-guDaegeon34186Republic of Korea

This study investigated the effect of multi-step heat treatment on the microstructure, mechanical properties and fracture behavior of thick 15 Co-12 Ni secondary hardening steel. As-quenched sample was found to have elongated prior austenite grain(PAG) and coarse lenticular martensitic structure. On the other hand, heat-treated sample was observed to have fine lenticular martensitic structure due to fine PAG size and a lot of nano-sized carbides. Also, after heat treatment, nano-scale reverted austenite film was formed at the martensite interfaces. The heat-treated sample showed 2.47 GPa superior tensile strength and superior elongation of about 12 %. The high strength was mainly due to fine block size and high number density of nano-sized carbides. The average value of plane strain fracture toughness(KIC) was 29.3 MPa m1/2, which indicated a good fracture toughness even with the high tensile strength. The tensile fracture surface was observed to have ductile fracture mode(cup-and-cone) and the formation of about ~1 μm ultra-fine dimples. In addition to this, nano-sized carbides were observed within the *** findings suggested that the nano-sized carbide had a positive effect not only on the strength but also on the ductility of the alloy. The fractured surface after toughness test, also showed ductile fracture mode with a lot of dimples. Based on the above results, correlation among microstructural evolution,deformation and fracture mechanisms along the heat-treatment was also discussed.

关键词： Ultra-high strength High Co-Ni secondary hardening steel Microstructure Tensile properties Fracture toughness Reverted austenite

Electromagnetically Induced Transparency in an Atom-Molecule Bose-Einstein Condensate

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2007年第3X期48卷 461-464页

作者： JIN Guang-Ri Chul Koo kim kyun Nahm Institute of Physics and Applied Physics Yonsei University Seoul 120-749 Korea Department of Physics Yonsei University Wonju 220-710 Korea

We propose a new measurement scheme for the atom-molecule dark state by using electromagnetically induced transparency （FIT） technique. Based on a density-matrix formalism, we calculate the absorption coefficient numerically. The appearance of the EIT dip in the spectra profile gives clear evidence for the creation of the dark state in the atom-molecule Bose--Einstein condensate.

关键词： electromagnetically induced transparency dark state Bose-Einsteln condensate

Variable step-size affine projection algorithm based on global speech absence probability for adaptive feedback cancellation

在线全文

学校读者我要写书评

暂无评论

Journal of Central South University 2014年第2期21卷 646-650页

作者： kim Young-Sear SONG Ji-hyun kim Sang-kyun LEE Sangmin Department of Biomedical Engineering Eulji University Department of Electronic Engineering Inha University Institute for Information and Electronics Research Inha University

A novel approach is proposed for improving adaptive feedback cancellation using a variable step-size affine projection algorithm(VSS-APA) based on global speech absence probability(GSAP).The variable step-size of the proposed VSS-APA is adjusted according to the GSAP of the current *** weight vector of the adaptive filter is updated by the probability of the speech *** performance measure of acoustic feedback cancellation is evaluated using normalized *** results demonstrate that the proposed approach has better performance than the normalized least mean square(NLMS) and the constant step-size affine projection algorithms.

关键词： adaptive feedback cancellation affine projection global speech absence probability(GSAP)

miR-215 overexpression distinguishes ampullary carcinomas from pancreatic carcinomas

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2015年第3期14卷 325-329页

作者： dong Ho Choi Sang Jae Park Hark kyun kim Department of Surgery Hanyang University School of Medicine Center for Liver Cancer National Cancer Center Biomolecular Function Research Branch National Cancer Center

Distinguishing ampullary carcinoma from pancreatic carcinoma is important because of their different prognoses. microRNAs are differentially expressed according to the tissue of origin. However, there is rare research on the differential diagnosis between the two types of cancers by microRNA in periampullary cancers. The present study was undertaken to compare microRNA profiles between ampullary and pan- creatic carcinomas using microarrays, miR-215 was most significantly overexpressed in ampullary carcinomas; whereas the expressions of miR-134 and miR-214 were significantly lower in ampuUary carcinomas than in pancreatic carcino- mas. When these discriminatory microRNAs were applied to liver metastases, they were correctly predicted for the tissue of origin. Although this study is limited by small sample size, striking difference in microRNA expression and concordant expression of discriminating microRNAs in primary tumors and metastases suggest that these novel discriminatory mi- croRNAs warrant future validation.

关键词： ampulla of Vater pancreatic cancer gene expression

Unsupervised random forest for affinity estimation

在线全文

学校读者我要写书评

暂无评论

Computational Visual Media 2022年第2期8卷 257-272页

作者： Yunai Yi Diya Sun Peixin Li Tae-kyun kim Tianmin Xu Yuru Pei Key Laboratory of Machine Perception(MOE) Department of Machine IntelligencePeking UniversityBeijing 100871China Department of Electrical and Electronic Engineering Imperial College LondonLondonUK School of Stomatology Stomatology HospitalPeking UniversityBeijing 100081China

This paper presents an unsupervised clustering random-forest-based metric for affinity estimation in large and high-dimensional *** criterion used for node splitting during forest construction can handle rank-deficiency when measuring cluster *** binary forest-based metric is extended to continuous metrics by exploiting both the common traversal path and the smallest shared parent *** proposed forest-based metric efficiently estimates affinity by passing down data pairs in the forest using a limited number of decision trees.A pseudo-leaf-splitting(PLS)algorithm is introduced to account for spatial relationships,which regularizes affinity measures and overcomes inconsistent leaf *** random-forest-based metric with PLS facilitates the establishment of consistent and point-wise *** proposed method has been applied to automatic phrase recognition using color and depth videos and point-wise *** experiments demonstrate the effectiveness of the proposed method in affinity estimation in a comparison with the state-of-the-art.

关键词： affinity estimation forest-based metric unsupervised clustering forest pseudoleaf-splitting(PLS)