• 한국정밀공학회지
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• 제33권2호
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• pp.129-138
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• 2016

This paper presents a natural corners-based SLAM (Simultaneous Localization and Mapping) with a robust data association algorithm in a real unknown environment. Corners are extracted from raw laser sensor data, which are chosen as landmarks for correcting the pose of mobile robot and building the map. In the proposed data association method, the extracted corners in every step are separated into several groups with small numbers of corners. In each group, local best matching vector between new corners and stored ones is found by joint compatibility, while nearest feature for every new corner is checked by individual compatibility. All these groups with local best matching vector and nearest feature candidate of each new corner are combined by partial compatibility with linear matching time. Finally, SLAM experiment results in an indoor environment based on the extracted corners show good robustness and low computation complexity of the proposed algorithms in comparison with existing methods.

• 유통과학연구
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• 제19권12호
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• pp.23-32
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• 2021

Purpose: By integrating multiple separate online, offline distribution channels, omnichannel distribution has modernized and revolutionized the retailing sector. Omnichannel distribution supports firms by delivering seamless shopping experiences for customers throughout all touchpoints of the shopping journey. This paper aims at exploring the impact of channel integration quality on customer experience and patronage intentions in the omnichannel distribution context. Research design, data and methodology: An online survey was taken with 351 omnichannel experienced shoppers by utilizing the structured questionnaire. The partial least square-structural equation modeling (PLS-SEM) and Smart PLS software were employed to analyze and test proposed hypotheses. Results: The findings reveal that channel integration quality dimensions including breadth of channel-service choice, transparency of channel-service configuration, content consistency, and process consistency, play crucial roles in the customer shopping experience. The perceived compatibility has been influenced by the integrated interactions in which content consistency and process consistency. The findings also demonstrate the positive and direct impact of perceived compatibility on customer experience, and both factors have substantial effects on customers' patronage intentions. Conclusions: This study sheds light on the literature on channel integration quality, omnichannel retailing experience and customer patronage. In addition, this study provides practical implications for omnichannel retailers in enhancing customer experience and patronage.

• Structural Engineering and Mechanics
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• 제62권4호
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• pp.443-453
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• 2017

The performance of bolted side-plated (BSP) beams is affected by the degree of transverse partial interaction, which is a result of the interfacial slip caused by transverse shear transfer between the bolted steel plates and the reinforced concrete beams. However, explicit formulae for the transverse shear transfer profile have yet to be derived. In this paper, a simplified piecewise linear shear transfer model was proposed based on force superposition principle and simplification of shear transfer profiles derived from a previous numerical study. The magnitude of shear transfer was determined by force equilibrium and displacement compatibility condition. A set of design formulae for BSP beams under several basic load cases was also derived. Then the model was verified by test results. A worked example was also provided to illustrate the application of the proposed design formulae. This paper sheds some light on the shear force transfer mechanism of anchor bolts in BSP beams, and offers a practical method to evaluate the influence of transverse partial interaction in strengthening design.

• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2008년도 추계학술대회
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• pp.153-156
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• 2008

In recent years, IPTV attracts great attention along with the digital convergence of communication and media technologies. IPTV combines the advantages of TV and Internet and changes our lifestyle dramatically. In addition, the IPTV service is capable of becoming a new business model which has huge growth potentials in technology-converging marketplaces. This study examines critical factors on the consumer's adoption of the IPTV service. Based on the Innovation Diffusion Theory (IDT), IPTV specific attributes and personal characteristics, we derive eight key factors in the research model. compatibility, ease of use, image, diversity of contents, interactivity, monetary value, social influence, and user satisfaction. Using the partial least square (PLS) method on the data collected through a web-based survey, we test our research model with several hypotheses. From this study, we find that diversity of contents, compatibility and interactivity have a significant indirect effect on the use of IPTV service via user satisfaction, and user satisfaction and social influence also have a significant direct impact on the IPTV use. These findings not only provide practical insights on the consumer acceptance of new technology-converging services, but also help managers to plan their marketing strategies better.

• The Plant Pathology Journal
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• 제30권4호
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• pp.384-396
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• 2014

Vegetative compatibility groups (VCGs) are determined for many fungi to test for the ability of fungal isolates to undergo heterokaryon formation. In several fungal plant pathogens, isolates belonging to a VCG have been shown to share significantly higher genetic similarity than those of different VCGs. In this study we sought to examine the relationship between VCG and genetic similarity of an important cool season turfgrass pathogen, Sclerotinia homoeocarpa. Twenty-two S. homoeocarpa isolates from the Midwest and Eastern US, which were previously characterized in several studies, were all evaluated for VCG using an improved nit mutant assay. These isolates were also genotyped using 19 microsatellites developed from partial genome sequence of S. homoeocarpa. Additionally, partial sequences of mitochondrial genes cytochrome oxidase II and mitochondrial small subunit (mtSSU) rRNA, and the atp6-rns intergenic spacer, were generated for isolates from each nit mutant VCG to determine if mitochondrial haplotypes differed among VCGs. Of the 22 isolates screened, 15 were amenable to the nit mutant VCG assay and were grouped into six VCGs. The 19 microsatellites gave 57 alleles for this set. Unweighted pair group methods with arithmetic mean (UPGMA) tree of binary microsatellite data were used to produce a dendrogram of the isolate genotypes based on microsatellite alleles, which showed high genetic similarity of nit mutant VCGs. Analysis of molecular variance of microsatellite data demonstrates that the current nit mutant VCGs explain the microsatellite genotypic variation among isolates better than the previous nit mutant VCGs or the conventionally determined VCGs. Mitochondrial sequences were identical among all isolates, suggesting that this marker type may not be informative for US populations of S. homoeocarpa.

• 대한치과기공학회지
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• 제36권3호
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• pp.165-169
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• 2014

Purpose: This study is a mechanical strength supplementation of denture base resin Polymethyl methacrylate (PMMA) is in general use for denture base resin of the partial and full denture, however, The polymerization process of PMMA is not stabilized. Because of compatibility problems, preceding studies were performed, which were enhancing mechanical strength(Camilo Machado 2007),(Ana M. 2008), addition filler to materials property(Ayse Mese, 2008), self curing method(Hiroshi Shimizu, 2008). Methods: The carbon fiber and polyacetal filler, reinforced the mechanical strength for improving the stability of denture base resin were supplemented to the self cured resin. The Modulus of elasticity and the restoring force were calculated by tensile test. Results: The strengths of the heat and self cured resin were respectively decreased and increased, when the filler was supplemented to the denture base resin and the modulus of elasticity of both heat and self cured resin were not increased, when the filler was supplemented to the denture base resin. Conclusion: The restoring forces of self cured resin containing 10% filler were increased, when the filler was supplemented to the denture base resin.

• East Asian Economic Review
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• 제26권3호
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• pp.227-253
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• 2022

Despite the proliferation of free trade agreements (FTAs), many exporting firms are still confronted with several challenges in utilizing the FTA preferential tariffs. Based on the Technology-Organization-Environment (TOE) framework, this study empirically examines the factors affecting the utilization of FTA schemes by exporting firms. To clarify the key factors influencing FTA utilization, this study develops a conceptual model from the perspective of the adoption of information technology innovations. Eight factors derived from the TOE framework are proposed to explore the determinants of FTA utilization in export. Partial least squares structural equation modeling is employed to analyze the data collected from 162 exporting small- and medium-sized enterprises in the South Korean textile industry. The findings reveal that compatibility and trading partner influence are positively associated with FTA utilization, while complexity is negatively related. Factors of organizational context do not show any relationship with FTA utilization. This study is the first to theoretically analyze and empirically test the determinants of FTA utilization from the perspective of technological innovation adoptions. By examining the relative importance of TOE factors in the utilization of FTA schemes, this study expects to advance a holistic understanding on the perceived factors that could potentially affect the utilization of FTA schemes.

• 한국육종학회지
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• 제42권4호
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• pp.390-396
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• 2010

본 연구는 국내 수집 잡초성벼에 존재하는 잎도열병 저항성 관련 유전자를 탐색하고, 이 저항성유전자와 연관된 분자 마커를 탐색하는 것이다. 도열병에 감수성인 자포니카 품종인 낙동벼와 도열병에 강한 잡초성벼인 강화앵미11을 교잡하여 120개 RILs를 육성하여, 도열병 균주반응과 잎도열병 밭못자리검정을 통한 저항성 유전자 탐색에 이용하였다. 1. 총 45개 도열병 균주를 이용하여 양친들을 검정한 결과, 잡초성벼 강화앵미11은 25개 균주에 대하여 저항성 반응을 보였고, 낙동벼는 1개의 균주에만 저항성 반응을 보였다. 2. 강화앵미11이 저항성반응을 보이는 25개 균주 중에서 90-008등 9개 균주를 선발하여 120개 RILs에 대한 도열병 균주에 대한 저항성반응을 조사한 결과, 대부분의 RILs이 저항성반응으로 치우친 경향을 보였으며, 수원, 철원 및 남양 잎도열병 밭못자리 검정포장에서 실시한 120 RILs의 저항성반응 분포도 도열병 균주반응에서 나타난 결과와 유사한 경향을 보였다. 3. 12번 염색체 OSR32-RM101 영역에서 90-008, 97-268, 93-456, 04-226, 03-177 및 87-138 도열병 균주와 수원, 철원, 남양 지역 잎도열병 밭못자리 검정에 대한 저항성 유전자를 탐색하였으며, 이 저항성 유전자는 강화앵미11에서 유래되었고, 표현형변이를 60%이상 설명하는 주동유전자인 것으로 추정된다. 4. 90-008균주와 남양 잎도열병 밭못자리 검정에 대한 저항성 유전자는 12번 염색체 외에 11번 염색체에서도 탐색되었으며, 93-456 균주와 철원, 수원지역 잎도열병 밭못자리 검정에 대한 저항성유전자는 7번과 11번 염색체에서도 탐색되었고, 이들 저항성유전자는 낙동벼 대립유전자에 의해 저항성이 증가되었다.

• 마케팅과학연구
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• 제18권2호
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• pp.89-111
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• 2008

디지털 기술의 발전으로 일상생활에 접목시킨 스마트 의류 개발에 관한 연구가 활발히 진행되고 있으나, 실질적으로 착용하게 될 소비자의 인식이나 태도에 관한 연구가 이루어지지 않고 있다. 본 연구에서는 스마트의류의 지각된 혁신속성과 위험지각 차원이 제품 태도와 수용의도에 미치는 영향을 알아보고자 대학생을 대상으로 설문지법을 이용하여 조사하였다. 연구의 결과, 스마트의류의 지각된 혁신속성은 상대적 이점, 가시성, 복잡성의 3가지 요인으로, 지각된 위험은 신체/성과적 위험, 사회심리적 위험, 시간손실 위험, 경제적 위험 4가지 요인으로 추출되었다. 혁신특성 중 상대적 이점, 가시성이, 위험지각 중 사회심리적 위험과 경제적 위험이 제품 태도와 구매의도 예측에 주요한 변인으로 나타났다. 한편 사회심리적, 경제적 위험은 상대적이점과 복잡성을 설명하는데, 신체성과적, 사회심리적, 시간손실 위험은 가시성을 설명하는데 유의한 변인으로 나타났다. 제품 태도는 혁신특성과 구매 의도 사이에서는 부분매개 역할을, 위험지각과 구매의도 사이에서는 완전매개역할을 하는 것으로 나타났다. 본 연구는 스마트의류 구입 시 소비자가 인지하는 혁신특성과 지각된 위험의 유형을 파악함으로써 스마트의류 마케터들이 소비자의 긍정적인 태도 형성을 위한 마케팅 전략 수립 시 활용할 수 있는 기초 정보를 제시하였다.