A Minimal Error Sub-Space Recognition Method using 3D Reconstruction from Multi Image Frames

Dongjin Han(한동진),We Sub Eom(엄위섭),Hern-soo Hahn(한헌수) 대한전자공학회 2010 대한전자공학회 학술대회 Vol.2010 No.6

We propose a new recognition method which minimizes the affect of the 3D error of stereo reconstruction or video reconstruction. After 3D structure of an object is found via any Structure from Motion (SfM) method, 2D recognizers will be implemented on the minimal error sub-space of the object"s 3D reconstruction. For each image frame from either stereo images or video clips, the best 2D sub-space recognizer is determined by projecting objects original 3D (CAD) models onto each individual image frame"s 2D sub-space. Compared to the previous work [1] where 3D reconstruction was directly used for recognition, sub-space method will use sub-space to minimized the influence of the unknown 3D triangulation error.

입내 분산형 Al₂O₃/Ag 나노복합체의 제조와 특성

천승호,한인섭,히데오 아와지,Cheon, Sung-Ho,Han, In-Sub,Awaji, Hideo 한국세라믹학회 2007 한국세라믹학회지 Vol.44 No.4

Alumina/silver ($Al_2O_3/Ag$) nanocomposites with Ag content up to 9 vol% were prepared from nanopowder by soaking method using ${\gamma}-Al_2O_3$ of needle type and spark plasma sintering (SPS). The mechanical properties of specimens were investigated three-point flexural strength and toughness as a function of the Ag contents. The maximum flexural strength of the alumina/silver nanocomposite was 850 MPa for the 1 vol% composite, and also higher than monolith alumina as about 800 MPa at 3, 5, and 7 vol% Ag contents. Fracture toughness by single edged V-notch beam (SEVNB) was $4.05MPa{\cdot}m^{1/2}$ for the 3 vol% composite and maintained about $4.00MPa{\cdot}m^{1/2}$ at 5, and 7 vol% Ag content. Microstructure of fracture surface for each fracture specimens was observed. Due to the inhibition effect of alumina grain growth, the average grain size of nanocomposites depends on the content of Ag nano particles. The fracture morphology of nanocomposite with dislocation (sub-grain boundary) by silver nano-particles of second phases in the alumina matrix also showed transgranular fracture-mode compare with intergranular of monolith alumina. Thermal conductivity of specimens at room temperature was about 40 W/mK for the 1 vol% Ag content.

표준전동차 자동/무인운전기술 개발 및 시운전에 관한 연구

한성호(Han Seong-Ho),안태기(An Tae-Ki),이수길(Lee Su-Gil),이관섭(Kwan-Sub Kim),김원경(Kim Won-Kyoung),최규형(Choi Kyu-Hyoung) 한국철도학회 2000 한국철도학회 학술발표대회논문집 Vol.- No.-

The automatic/driverless operation which are great important techniques in metro railway are required to increase higher safety, greater reliability, and transport capacity. To satisfy such demands, we must have the system design and testing technique for the railway system operation. These techniques are related to the onboard train control and communication systems which include TCMS(Train Control and Monitoring System), ATO(Automatic train Operation), ATC(Automatic train Control), and TWC(Train to wayside communication). These sub-systems must be interfacing with not only each others but also the signal system on the ground. We tested the train control system on Test line that has been developed on the basis of the standardized type EMU for korea railway systems. This test line which is located in Sangju, have been constructed for testing 7 & 8 line of Seoul Metro railway.

전자식 선박디젤엔진의 엔진제어기 개발/연구

심한섭(Han-Sub Sim),이민광(Min-Kwang Lee),이강윤(Kang-Yoon Lee) 한국기계가공학회 2015 한국기계가공학회지 Vol.14 No.5

A control program of an engine control module (ECM) was developed, and its control performance was verified on a 750Ps marine diesel engine. The control method was designed for an engine rotational speed control system. For ECM hardware, the commercial rapid control prototype (RCP) ECM was used. The programming tool for control algorithm development was the MatLab/Simulink. The main control algorithm assembled many control models as engine cranking, run, and stall. Each model has sub-models to input/output control signals. The target engine speed was input signal from a speed control lever, and control output signal of the ECM was sent to the unit-injectors for fuel injection. The engine test was performed under various conditions of engine rotational speeds and dynamometer loads. The test results show that the control function of the ECM is suitable for electrical marine diesel engines.

Al - Ferrite의 Mossbauer 분광학적 연구

이충섭(Choong-Sub Lee),주한식(Han-Sik Joo),이찬영(Chan-Young Lee),서정철(Jung-Chul Sur) 한국자기학회 1998 韓國磁氣學會誌 Vol.8 No.4

We have studied Al_xFe_(3-x)O₄ produced by direct composition method using X-ray diffraction and Mssbauer spectroscopy. The cation distribution for Al_xFe_(3-x)O₄ was determined by the ratio of sub-spectra absorption area. The charge state of Fe atoms in octahedral site(B-site) is Fe^(2.5+) based on electron hopping, Fe²+ ↔ (Fe³+, Al³+) without dependency of substituted Al amounts.

진로탐색 검사의 구조모형 타당화 연구

송인섭(Song In sub),한윤영(Han Yun Young) 한국영재교육학회 2006 영재와 영재교육 Vol.5 No.2

  본 연구는 중학생용 진로탐색 검사를 개발하고, 그 타당성을 검증하는데 목적이 있다. 관련 문헌과 기존에 개발된 진로검사의 구성요인을 검토하여 자아개념, 진로성숙, 직업인성, 직업선호 4가지 구성요인을 진로탐색의 구성요인으로 가정하였다. 378개의 예비검사 문항을 161명의 중학생들에게 실시하였다. 탐색적 요인분석 결과에 근거하여 378문항을 246개로 축소하여 본검사 문항을 구성하였다. 본검사에는 1587명의 학생들을 대상으로 이루어졌다. 확인적 타당화 과정에 의해 3개 문항이 삭제되고 최종 243문항으로 이루어진 중학생용 진로탐색 검사가 개발되었다. 진로탐색 구조모형의 적합도 분석을 통해 진로탐색의 위계구조를 확인하였다. 경쟁모형들의 적합도 지수를 통해 진로탐색에 대한 최적모형을 평가해 본 결과, 상대적합도 지수인 NFI, TLI, CFI 가 .90이상으로 잘 부합된 것으로 나타났으며 RMSEA를 기준으로 평가한 결과 2단계 모형이 가장 적합한 모형으로 경험적으로 증명되어 진로탐색 구인의 이론적 구조가 위계적 모형임을 확인하였다. 또한 교차타당화를 통해서 모형의 일반화를 확인할 수 있었다.   The purpose of this study ons to develop career exploration scale for Korea middle-school students and to test construct validation through covariance structure analysis. As to research the constructed factors, which to develop career exploration scale we reviewed related documents and inventories, then defined the concept of career exploration and the theological constructive factors. The were included in 4 components of self-concept, career maturity, vocational character, vocational preference for career exploration accordingly in 26 sub-components. 191 middle school students were analysed through 378 items at pilot test. Based on factor analysis, 378 items was reduced into 246 items which were selected to final test items. 1587 students were conducted final test. Through confirmatory factor analysis, 3 item was deleted, finally the test of career exploration scale for Korean middle students, which on consisted 243 items, Through analyzing validations of career exploration structure model, we confirmed hypothetical structure of career exploration and branch structure of psychological career exploration.<BR>  As a result of covariance structure analysis(AMOS), we confirmed 2nd order construct model of career exploration was the gest adequate through the indices of best fit(TLE, NFI, CFI>.90, RMSEA=.112). In addition, generalizability of this model was confirmed through cross-validation testing which showed that this model was fitted in a corss-validation samples.

우슈도장 수련생의 서비스공정성 지각이 고객참여행동과 고객시민행동에 미치는 영향

최형섭(Choi, Hyung-Sub),한진욱(Han, Jin-Wook),김태형(Kim, Tai-Hyung) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.1

The purpose of this study was to examine the impact of service fairness on customer participation behaviors and customer citizenship behaviors in Wu-shu participants. Toward this end, a total of 270 wu-shu participants in Gyeonggi-do area was selected using a convenient sampling method. 250 usable questionnaires were returned to the researchers. Data analyses were conducted for frequency analysis, exploratory factor analysis, reliability test, correlation analysis, descriptive analysis, and multiple regression analyses with PASW 18.0. The results of this study indicated that (1) distributive and procedural fairness dimensions had significant effects on customer participant behaviors, (2) all the three sub-dimensions(distributive, procedural, and interactional) of service fairness had a significant impact on customer citizenship behavior, and (3) both communication and sympathy dimensions of customer citizenship behavior positively affected customer citizenship behavior. Additional implications and directions for future research were discussed.

Characterization of OsJAC1 which is responding to different types of ionizing radiation

In jung Jung,Jung Eun Hwang,Sung Min Han,Hong-Il Choi,Soon-Jae Kwon,Jin-Baek Kim,Si-Yong Kang,Dong Sub Kim 한국육종학회 2015 한국육종학회 심포지엄 Vol.2015 No.07

Ionizing radiation affects gene expression from plant genomes. To monitor the genome-wide transcriptional changes induced by three types of ionizing radiation, we used the rice RNA sequencing to identify genes that are up- or down-regulated by gamma rays (GAs), proton (PRs) and ion beams (IBs). The Oryza sativa jacalin-like lectin domain containing proteins (OsJAC1) gene was highly induced by GAs, PRs and IBs. OsJAC1 was selected based on the expression patterns of a genome-wide dataset of RNA sequencing. Many jacalin-related lectin genes have been shown to be associated with disease resistance, biotic and abiotic stress signaling. Therefore, we studied its expression pattern in response to different abiotic stress and phytohormone treatments. The expression patterns of OsJAC1 under two different abiotic stress conditions (salt and heat stress) and phytohormones (salicylic acid and methyl jasmonate) were examined. The transcripts of OsJAC1 were significantly induced in response to abiotic stress conditions, including salt and heat treatments. In addition, it was induced in response to the salicylic acid and methyl jasmonate treatments, respectively. To investigate the sub-cellular localization of OsJAC1, the gene was expressed as a fusion protein tagged with GFP, in tobacco leaf epidermis and examined under confocal microscope. The OsJAC1 was clearly localized at the nucleus. These results provide critical insights into the molecular functions of the rice jacalin-like lectin domain containing proteins as receptors of external signals.

음식물 폐기물류로 제조된 퇴비의 고형연료 가치 평가 연구

이경섭,장한별,정은지,도아름,하진욱 순천향대학교 부설 산업기술연구소 2021 순천향 산업기술연구소논문집 Vol.27 No.2

In 2019, the daily generation of food waste in Korea was 14,314 tons, which is a steady increase compared to the past. To efficiently use food waste as an effective resource, composting and feeding are carried out. In Korea, attention is gradually focused on a sustainable resource circulation society. Compost made of food waste has problems with foreign substances, heavy metals, and salt content, and solid fuelization research is being actively conducted to compensate for this. In this study, infrared spectroscopy(FT-IR), organic content measurement(TGA), and chemical composition were measured to compare the fuel characteristics with wood pellets, which are major solid fuels, in order to examine the physical and chemical properties of food waste compost.

Online 마케팅 채널확장전략 분석

박한수,류정섭 진주여자전문대학 2002 論文集 Vol.25 No.-

Multi-channel marketing is topic significant interest to consumer marketers. Today, virtually all types of consumer products are available to consumers through multiple channels. As more and more consumers embrace alternative channels, including the Internet, for shopping, consumer marketers are likely to adapt to the multi-channel shopping trend. And many marketers are abandoning single business model approaches such as stand-alone brick and mortar(B&M) stores or Internet only operations and are turning to click and mortar(C&M) strategies, many firms now operate both internet channel and retail stores. And the issues facing the click and mortar(C&M) marketer, including cannibalization of existing sales, customer retention. We examine this questions for B&M suppliers on when they should consider expanding their distribution network to the C&M strategy. In this paper, we study the competition between two kinds of suppliers, B&M and C&M, marketing channel expanding strategy. Each firm sells a homogeneous good, using the extended circular spatial market model, we derive and analyze the Nash and Stackelberg equilibria as a function of offline market share and efficiency of online channel of the C&M supplier. The result can be summarized as follows : (1) Stackelberg equilibrium is always superior to the Nash equilibrium for both suppliers., (2) Under certain conditions, the price of online channel can be higher than that of offline channel, (3) It is impossible for the C&M supplier to encroach on all of the B&M supplier's market, but under certain conditions, online channel of the C&M may cannibalize all of the his/her offline market, (4) In some cases, profit of the C&M supplier are larger than that of the B&M supplier. Our results have important managerial implications. We provide guidelines for suppliers on when they should consider expanding their distribution network to the C&M strategy.