글루타민산나트륨(Mono Sodium Glutamate)을 처방한 모발 경화제가 펌에 미치는 효과

최원준ㆍ유세은(Won Joon ChoiㆍSe Eun Yoo) 한국인체미용예술학회 2016 한국인체미용예술학회지 Vol.17 No.1

This study attempted to assess the applicability of the hair-hardener considering hair elasticity and retention through analysis of changes in hair conditions after chemical treatment. For this, the following were analyzed: safety and stability of the hair-hardener, changes in hair thickness, amino acid, changes in surface color, hair surface using the SEM, changes in tensile strength, and wave efficiency by the frequency of shampooing. Then, the results found the following: The stability of the hair-hardener was confirmed because there were no changes in its physical properties and color at room temperature and constant temperature. In a clinical allergy test as well, a negative response was found in all 20 clinical trial participants, which confirms its safety. In terms of changes in hair thickness, hair was thicker in the group that used the hair hardener than in the control group. In comparison of amino acid, total amino acid, L-glutamic acid, and cysteine contents increased in the experimental group that used the hair hardener. In terms of changes in surface color, L* value was high in the experimental group. A* value, which represents the level of reddish color, was also high in the experimental group. In contrast, b* value, which reveals the level of yellow color, was low in the experimental group. In observation of hair surface using the SEM, hair cuticles were tidier in the experimental group than in the control group. In terms of tensile strength, the experimental group was greater than the control group. According to measurement of wave efficiency by the frequency of shampooing after a general perm and setting perm as well, wave formation was more efficient in the experimental group.

자동차 조립공장의 일일 생산순서계획 시스템

최원준,Choi, Won-Joon 대한산업공학회 1996 산업공학 Vol.9 No.2

자동차 조립공장의 주요 공정은 차체라인, 도장라인, 조립라인의 순으로 구성되어 있다. 작업의 효율성을 높이기 위하여 차체라인과 조립라인은 주요 부품소모의 평준화를, 도장라인은 동일 색상차체의 연속 생산을 선호하므로, 생산순서의 결정시 상호 상층되는 점이 많다. 본 연구에서는 조립공장전체의 생산성을 극대화하기 위하여 차체라인, 도장라인, 조립라인의 특성을 고려한 일일생산순서결정 방법을 제시한다.

A Turbine-Blade-Balancing Problem with Some Locking Blades

최원준,Choi, Won-Joon 대한산업공학회 2001 산업공학 Vol.14 No.2

In the turbine-blade manufacturing industry, turbine-blades are machined and then are assembled to form a circular roll of blades. The roll of blades should be balanced as much as possible, since otherwise the efficiency of the turbine generator might be damaged. A locking blade is a blade whose location is fixed and a non-locking blade is a blade whose location can be freely changed. In this paper, we study methods for balancing the weights of the rotating blades for a turbine where some blades are locking blades. The turbine-blade balancing problem is formulated into a mixed-integer programming problem, which turns out to be NP-hard. A heuristic method based on the number partitioning algorithm is developed and the computational experiments show very promising results.

자동차 조립라인의 실시간 투입시스템의 자동화

최원준,박혜규,신현오,Choi, Won-Joon,Park, Hye-Kyou,Shin, Hyun-Oh 대한산업공학회 1996 산업공학 Vol.9 No.2

자동차 조립공장의 생산은 혼류생산 (Mixed-Model Production)의 대표적인 형태로서 동일한 조립라인에서 다양한 사양의 차량들을 Batch생산이 아니라 각 사양의 생산량이 평준화되도록 생산을 하는 것이 특징이다. 그런데 도장라인에서 생산완료 된 순서는 혼류조립라에서의 평준화 생산에 적합하지 않은 상태이므로 조립라인에의 투입순서를 재작성하여 제어하여야 한다. 본 논문에서는 조립라인의 실시간 투입순서 작성 및 운영시스템을 자동화하여 성공적으로 운영한 사례를 소개하고자 한다.

Amino silicon을 처방한 환원제가 모발에 미치는 영향

최원준 ( Won Joon Choi ) 한국두피ᆞ모발미용학회 2008 대한미용학회지 Vol.4 No.2

By measuring the wave efficiency, photographing of SEM (Scanning Electron Microscope) and optical microscope and tensile strength etc, this study is to identify the how the hair of woman in 20s is influenced by cysteine and thiglycolic acid which were made from normal reducing agent (cysteine, thioglycolic acid) and amino silicon with amino silicon of D company. The result of this study is found as below. First, when the hair is permed by reducing agent, it is better to have amino silicon than not to have amino silicon. Second, for optical microscope observation, when the hair is permed with normal reducing agent, it shows that its surface is not smooth and looks rough due to the damage of the hair. Third, for SEM observation, when the hair is permed with reducing agent of amino silicon, it shows better surface and the damage of the hair`s cuticle is decreased. Fourth, when the hair is permed with cysteine of amino silicon, it shows better tensile strength and also it is found that amino silicon contributes to much higher tensile strength of the hair.

국내발간 건축잡지의 작품소개체계 변천에 대한 개관

최원준(Choi Won-Joon) 대한건축학회 2010 대한건축학회논문집 Vol.26 No.2

Although they were often scrutinized as fields of critical discourse in previous studies, one of the core functions of architectural magazines has been the provision of information on recent or important architectural works. This research looks into the chronological development of how architectural periodicals of Korea presented architectural works - especially how image and text were utilized and linked in the presentation - under the assumption that these formal features constitute the bases of how these magazines, and in turn the architectural institution, understood and implemented architectural practice. Korea's first architectural periodical Chosen to Kenchiku (1922-1942), published during the Japanese colonial period, and Journal of Korean Institute of Architects (1955-), its successor, established a form that delivered a work's objective and technical features through image and textual information. Space (1966-), published by Kim Swoo Geun, explored, at the expense of objective and technical information, the subjective, analytic, and critical function of work presentation with highly rhetorical photographs often separated from the text section. Finally, Architecture and Environment (1986-, now C3) succeeded in establishing a format that balanced objective information and critical evaluation, to promote a comprehensive understanding of a work, including process, space organization, form, program, technical aspects, and critical discourse.

아메리카 인디언 헤어스타일 특성에 관한 연구

최원준 ( Won Joon Choi ),백선영 ( Sun Young Paik ) 한국미용학회 2008 한국미용학회지 Vol.14 No.4

This study indicates that basic raw materials for development of hair style in modern society by looking into periodic, formative and amusement characters of america indian`s hair style. Also It extends modern people`s aesthetic vision and was considered about not only america indian`s hair, background of style, history, but also social and cultural background which were based on previous published books, thesises and all that stuff. Then, it was analyzed that the characters of america indian`s hair style by classifying period, formation and amusement. As a result, america indian`s hair style indicated that it is various and particular style. Also It meant cultural speciality on its style. Also it can be applicable to improve straight hair style of eastern into various style because it has the eastern hair characteristics. It can extend aesthetic vision of modern hair style through understanding characteristics of america indian`s hair style in the concrete thereafter improving modern hair style to apply each type of hair in depth.

키위(Apteryx australis) protease의 항균성과 두피건강에 미치는 영향

최원준 ( Won Joon Choi ),강상모 ( Sang Mo Kang ) 한국미용학회 2009 한국미용학회지 Vol.15 No.4

This research aimed to assess the likelihood as the material of a natural scalp care product on the basis of this after looking into the effect that it has on antibiosis and the scalp after extracting kiwi(Apteryx australis) fruit protease, and got the following conclusion. First, though antimicrobial activity of kiwi fruit protease was founded out in the pityrosporum ovale, P.ovale and propionibaterium, P.acne that always exist on the standard strain and the scalp, the clear zone on propionibaterium, P.acne was not found out in the disk diffusion method. Second, in the skin safety test, all the reagents confirmed the safety in the skin irritation by testing negative, and all the participants showed an improvement in the general scalp complexion including a dandruffy scalp and inflammatory scalp after the test.

임상연구 : 압축공기 분사청소가 ProSeal 후두마스크의 수술 후 잔류 단백질 제거에 미치는 효과

최원준 ( Won Joon Choi ),김윤홍 ( Yun Hong Kim ),경문기 ( Moon Ki Kyoung ) 대한마취과학회 2007 Korean Journal of Anesthesiology Vol.53 No.4

Background: The reusable ProSeal(TM) laryngeal mask airways (PLMA`s) have the potential to act as a vector for the transmission of prion diseases such as variant Creutzveldt-Jacob disease. This study tested the hypothesis that supplementary compressed air jet cleaning facilitates the removal of protein deposits on PLMA`s after surgery. Methods: After clinical use, thirty PLMA`s were randomly allocated to be washed by hand and with an autoclave (134℃ for 40 min) (group 1, n = 15), or by hand, autoclave and compressed air jet cleaning (1 min) (group 2, n = 15). In both groups, protein deposits were detected on PLMA`s by erythrosine staining. A staining score designated as nil, mild, moderate, and severe was given to each site (outer, inner surface and edges of the cuff, airway and drain tube, finger strap) according to the percentage of stained surface area. The severity of staining was compared for masks prior to use and after cleaning the mask. Results: Despite the cleaning of masks, the staining score worsened on the outer, inner surface and edge of PLMA`s in both groups (P<0.05); however, a similar pattern was observed on each part of a cleaned PLMA for both groups. Conclusions: We conclude that compressed air jet cleaning for 1 min did not improve the removal of protein deposits on PLMA`s after surgery. (Korean J Anesthesiol 2007; 53: 430~4)

커뮤니티 시설의 특성이 신규 아파트 가격에 미치는 영향

최원준(Choi, Won Joon) 한국지역개발학회 2022 한국지역개발학회 학술대회 Vol.2022 No.11

The contractor can identify the importance analysis and preference of community facilities by apartment complex and level and use them in the sales plan. Construction companies could be able to apply efficiency analysis based on the importance of existing community facilities and future sales points based on past construction practices. Also, the impact of future apartment price formation and up-and-down of apartment buildings on the presence or absence of community. There is no past study on the extent of influence on future apartment price formation or rise and fall of apartment buildings based on the presence or absence of the community, so a similar prior study is analyzed and analyzed for meaningful results.