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20대 여성의 정장의류 상표군 선호도와 구매시 평가기준
권수애,장현주,한정혜,조소영,손지희,김선화,안경은 충북대학교 교육 ·생활연구소 생활과학연구센터 2002 생활과학연구논총 Vol.6 No.2
This study is to analyze the compitition structure and the brand image of the formalwear and the preferance of the brand group among the age of 20's females. The 207 samples of 20's females who live in Cheong-Ju city. The results of this study are followed as: The market competition structre appeared in positioning map have been constituted into four groups of the "Tomboy y'sb","lollol·selly·besti-belly","VOV·o.z.o.c·Joinus",EnC·i.n.v.u". The brand-trasfer of each group may easily be taken place as each compition among these groups was much feeble. By investigating the image of the formalwear brands appeared in positioning map, it may be presented that horizontality dimrnsion is "cute-ellegance image", and verticality dimension is "mannish-feminine image". Group Ⅳ such as EnC·i.n.v.u is brand which are prefered and purechaseed by the age of 20's females, whereas the preferance and puechase of brand such as VOV·o.z.o.c·Joinus.
Comparison of the accuracy of digitally fabricated polyurethane model and conventional gypsum model
So-Yeun Kim,So-Hyoun Lee,Seong-Keun Cho,Chang-Mo Jeong,Young-Chan Jeon,Mi-Jung Yun,Jung-Bo Huh 대한치과보철학회 2014 The Journal of Advanced Prosthodontics Vol.6 No.1
PURPOSE. The accuracy of a gypsum model (GM), which was taken using a conventional silicone impression technique, was compared with that of a polyurethane model (PM), which was taken using an iTero™ digital impression system. MATERIALS AND METHODS. The maxillary first molar artificial tooth was selected as the reference tooth. The GMs were fabricated through a silicone impression of a reference tooth, and PMs were fabricated by a digital impression (n=9, in each group). The reference tooth and experimental models were scanned using a 3 shape convinceTM scan system. Each GM and PM image was superimposed on the registered reference model (RM) and 2D images were obtained. The discrepancies of the points registered on the superimposed images were measured and defined as GM-RM group and PM-RM group. Statistical analysis was performed using a Student’'s T-test (α=0.05). RESULTS. A comparison of the absolute value of the discrepancyrevealed a significant difference between the two groups only at the occlusal surface. The GM group showed a smaller mean discrepancy than the PM group. Significant differences in the GM-RM group and PM-RM group were observed in the margins (point a and f), mesial mid-axial wall (point b) and occlusal surfaces (point c and d). CONCLUSION. Under the conditions examined, the digitally fabricated polyurethane model showed a tendency for a reduced size in the margin than the reference tooth. The conventional gypsum model showed a smaller discrepancy on the occlusal surface than the polyurethane model.
So-Hyoun Lee,Youn-Mook Lim,Sung In Jeong,Sung-Jun An,Seong-Soo Kang,Chang-Mo Jeong,Jung-Bo Huh 대한치과보철학회 2015 The Journal of Advanced Prosthodontics Vol.7 No.6
PURPOSE. This study was to evaluate the effects of bacterial cellulose (BC) membranes as a barrier membrane on guided bone regeneration (GBR) in comparison with those of the resorbable collagen membranes. MATERIALS AND METHODS. BC membranes were fabricated using biomimetic technology. Surface properties were analyzed, Mechanical properties were measured, in vitro cell proliferation test were performed with NIH3T3 cells and in vivo study were performed with rat calvarial defect and histomorphometric analysis was done. The Mann-Whitney U test and the Wilcoxon signed rank test was used (α<.05). RESULTS. BC membrane showed significantly higher mechanical properties such as wet tensile strength than collagen membrane and represented a three-dimensional multilayered structure cross-linked by nano-fibers with 60 % porosity. In vitro study, cell adhesion and proliferation were observed on BC membrane. However, morphology of the cells was found to be less differentiated, and the cell proliferation rate was lower than those of the cells on collagen membrane. In vivo study, the grafted BC membrane did not induce inflammatory response, and maintained adequate space for bone regeneration. An amount of new bone formation in defect region loaded with BC membrane was significantly similar to that of collagen membrane application. CONCLUSION. BC membrane has potential to be used as a barrier membrane, and efficacy of the membrane on GBR is comparable to that of collagen membrane.
JORDAN DERIVATEON ON PRIME RINGS
So, Kwang Ho,Choi, Hyoun Joon 全北大學校 科學敎育硏究所 1994 과학과 과학교육 논문지 Vol.19 No.-
Throughout, ℜ will be represent an associative ring with center Z(ℜ). Recall that ℜ is prime if ℜ = 0 implies a = 0 or b = 0, and ℜ is semiprime if ℜ = 0 implies a = 0. A module X is said to be n-torsion free, where n is an integer, if nx = 0, x ∈ X implies x = 0. Let ℜ be a ring and ℜ be a left ℜ-module. An additive mapping D:ℜ →X will be calles a Jordan left derivation if D(a^2) = 2aD(a), a∈ℜ .D will be called a left derivation if D(ab)=aD(b)+bD(a),a,b ∈ℜ. The main theorems of this paper state by the rather weak hypotheses that the existence of a nonzero Jordan left derivation D:ℜ→X forces ℜ ti be commutative.
Fundamental understandings of mesh process and various formats of digital data in digital dentistry
Lee So-Hyoun,Jung Chang-Mo,Yoon Mi-Jung,Huh Jung-Bo,Lee Hyeonjong 대한치과이식(임프란트)학회 2021 The Korean Academy of Implant Dentistry Vol.40 No.1
Clinicians manage three-dimensional (3D) data in routine practice in the era of digital dentistry. Fundamental knowledge of digital data beyond the user’s manual provided by the companies is needed to understand and handle the 3D data in clinics. The 3D data used in the clinic are acquired by scanners and processed using a step-by-step procedure. A point cloud is an initial form of raw data. The data are then filtered, and a triangle mesh is generated. The meshes could be exported in various file formats. This fundamental knowledge would be helpful for clinicians in daily practice.
Comparison of the accuracy of digitally fabricated polyurethane model and conventional gypsum model
Kim, So-Yeun,Lee, So-Hyoun,Cho, Seong-Keun,Jeong, Chang-Mo,Jeon, Young-Chan,Yun, Mi-Jung,Huh, Jung-Bo The Korean Academy of Prosthodonitics 2014 The Journal of Advanced Prosthodontics Vol.6 No.1
PURPOSE. The accuracy of a gypsum model (GM), which was taken using a conventional silicone impression technique, was compared with that of a polyurethane model (PM), which was taken using an iTero$^{TM}$ digital impression system. MATERIALS AND METHODS. The maxillary first molar artificial tooth was selected as the reference tooth. The GMs were fabricated through a silicone impression of a reference tooth, and PMs were fabricated by a digital impression (n=9, in each group). The reference tooth and experimental models were scanned using a 3 shape convince$^{TM}$ scan system. Each GM and PM image was superimposed on the registered reference model (RM) and 2D images were obtained. The discrepancies of the points registered on the superimposed images were measured and defined as GM-RM group and PM-RM group. Statistical analysis was performed using a Student's T-test (${\alpha}=0.05$). RESULTS. A comparison of the absolute value of the discrepancy revealed a significant difference between the two groups only at the occlusal surface. The GM group showed a smaller mean discrepancy than the PM group. Significant differences in the GM-RM group and PM-RM group were observed in the margins (point a and f), mesial mid-axial wall (point b) and occlusal surfaces (point c and d). CONCLUSION. Under the conditions examined, the digitally fabricated polyurethane model showed a tendency for a reduced size in the margin than the reference tooth. The conventional gypsum model showed a smaller discrepancy on the occlusal surface than the polyurethane model.
원산지 개념의 구성 차원이 소비자의 제품평가에 미치는 영향
신소현(So Hyoun Shin),김상욱(Sang Uk Kim),채서일(Seo Il Chaiy) 한국경영학회 2007 한국경영학회 통합학술발표논문집 Vol.2007 No.8
원산지 관련 연구는 오랫동안 마케팅과 국제경영 분야에서 연구되어 왔다. 최근 원산지 관련 연구는 급속도로 글로벌화 되어 가는 기업환경을 반영하여 브랜드, 제조국, 부품소재 등 원산지를 다차원으로 분석하여 접근하는 연구흐름과 제품지식, 관여도 및 친숙도 등의 조절변수를 고려하는 연구흐름으로 분화 및 발전해왔다. 본 연구는 최근 단순한 원가절감 차원을 넘어서 브랜드원산지의 경쟁력을 제고시키는 전략적 수단으로 활용되고 있는**** 제조원산지의 선택과 관련된 기업 활동의 효과를 설명하고자 하였다. 이를 위해 제조원산지와 브랜드원산지를 긍정조합 및 부정조합으로 구분하여 원산지효과를 검증하였으며, 이 과정에서 소비자의 동기성향(조절초점)이 갖는 조절효과를 살펴보았다. 연구의 결과로 긍정적인 원산지의 조합(예컨대, 일본에서 생산된 프랑스 브랜드 오디오)의 경우가 부정적인 조합(예컨대, 중국에서 생산된 독일 브랜드 의류)의 경우보다 호의적인 반응을 유발함으로써 원산지효과가 있음이 확인 되었다. 또한 개인의 동기성향이 제품에 대한 메시지의 내용과 일치할 때 제품에 대한 평가가 좋아지는 조절적 적합성 (regulatory fit) 효과가 존재한다는 것도 확인 되었다. 끝으로 개인의 동기성향의 조절효과를 보았을 때, 긍정적인 원산지 조합에서는 개인의 동기성향에 따라 제품평가가 달라져 조절효과를 증명하였으나, 원산지 조합이 부정적일 때는 개인의 동기성향의 조절효과가 태도 부분에서만 부분 지지되고 품질지각과 구매의도 부분에서는 지지되지 않아서 동기성향의 조절효과가 존재한다는 점을 부분적으로 확인할 수 있었다. 연구결과를 토대로 기업이 제조원산지를 결정할 때 고려할 요소와 이미 제조원산지가 결정된 상황에서 보다 효율적인 마케팅 전략을 수립하기 위한 시사점을 제시하였다.
Lee, So-Hyoun,Moon, Jong-Hoon,Jeong, Chang-Mo,Bae, Eun-Bin,Park, Chung-Eun,Jeon, Gye-Rok,Lee, Jin-Ju,Jeon, Young-Chan,Huh, Jung-Bo Hindawi 2017 BioMed research international Vol.2017 No.-
<P>The purpose of this study is to evaluate the effect of three-dimensional preformed titanium membrane (3D-PFTM) to enhance mechanical properties and ability of bone regeneration on the peri-implant bone defect. 3D-PFTMs by new mechanically compressive molding technology and manually shaped- (MS-) PFTMs by hand manipulation were applied in artificial peri-implant bone defect model for static compressive load test and cyclic fatigue load test. In 12 implants installed in the mandibular of three beagle dogs, six 3D-PFTMs, and six collagen membranes (CM) randomly were applied to 2.5 mm peri-implant buccal bone defect with particulate bone graft materials for guided bone regeneration (GBR). The 3D-PFTM group showed about 7.4 times higher mechanical stiffness and 5 times higher fatigue resistance than the MS-PFTM group. The levels of the new bone area (NBA, %), the bone-to-implant contact (BIC, %), distance from the new bone to the old bone (NB-OB, %), and distance from the osseointegration to the old bone (OI-OB, %) were significantly higher in the 3D-PFTM group than the CM group (<I>p</I> < .001). It was verified that the 3D-PFTM increased mechanical properties which were effective in supporting the space maintenance ability and stabilizing the particulate bone grafts, which led to highly efficient bone regeneration.</P>