• 한국정밀공학회지
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• 제20권10호
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• pp.31-40
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• 2003

In this paper, optimal cutting condition to minimize the form error in side wall machining with a flat end mill is studied. Cutting forces and tool deflection are calculated considering surface shape generated by the previous cutting such as roughing. Using the form error prediction method from tool deflection, optimal cutting condition considering form accuracy is investigated. Also, the effects of tool teeth number, tool geometry and cutting conditions on form error are analyzed. The characteristics and the difference of generated surface shape in up and down milling are discussed and over-cut free condition in up milling is presented. Form error reduction method through successive up and down milling is also suggested. The effectiveness and usefulness of the presented method are verified from a series of cutting experiments under various cutting conditions. It is confirmed that form error prediction from tool deflection in side wall machining can be used in optimal cutting condition selection and real time surface error simulation for CAD/CAM systems. This study also contributes to cutting process optimization for the improvement of form accuracy especially in precision die and mold manufacturing.

• 조명전기설비학회논문지
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• 제21권4호
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• pp.80-87
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• 2007

This paper will suggest that the 1 cross orthogonal loop type sensor improves on the orthogonal loop form sensor-head, which is available a calibration of the linear birefringence, when a fiber optic current sensor was composed. An output characteristics of the 1 cross orthogonal loop form, a general closed loop form, the orthogonal loop form are compared by the IEC(International Electrotechnical Commission) 60044-8 standard, and the state of polarization is compared with three forms. As a result, when the closed loop form was changed to the orthogonal loop form, retardation decreased 15.3[%]. When the closed loop form was changed to the 1 cross orthogonal loop type, the retardation decreased 33.8[%]. As a result of the Faraday Effect measurement, the 1 cross orthogonal loop form has the highest output characteristic and the lowest error ratio. It met the 0.5 class of the IEC 60044-8 standard. Thus, in application of the 1cross orthogonal loop form, the possibility to develop high reliability fiber optic current sensors that have a high output and stable error ratio rises is increased.

• KIEAE Journal
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• 제8권1호
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• pp.99-104
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• 2008

This study surveys the types of form works used for constructing composite basement walls found in domestic construction sites. Based on expert surveys, the research provides criteria for selecting a form work type and cost-benefit analysis for different types of form works. In selecting a form work type, safety was considered the most important factor. It is induced from the survey that a successful construction requires a form work type that could solidly bear the lateral pressure of concrete rather than other types that cut back the cost and shorten the construction period. In the cost-benefit analysis, the benefit was the highest in 'euro-form+soldier system', and the cost was most competent in 'rib-lath+soldier system'. In considering benefit and cost together, 'euro-form+soldier system' was judged to be the best option. This is likely to be attributed to the following reasons: site workers are familiar with euro-forms because it is the most widely used; and, soldier system is more reliable in bearing lateral pressure compared to steel pipes.

• Journal of Microbiology and Biotechnology
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• 제24권4호
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• pp.507-521
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• 2014

A phase variation has been reported in an entomopathogenic bacterium, Xenorhabdus nematophila. Compared with a wild-type primary form, a secondary form usually loses several physiological and biochemical characters. This study showed that the phase variation of X. nematophila caused a significant alteration in its immunosuppressive activity and subsequent entomopathogenicity. A secondary form of X. nematophila was detected in laboratory colonies and exhibited significant differences in dye absorption and entomopathogenicity. In addition, the secondary form was different in its production of eicosanoid-biosynthesis inhibitors (EBIs) compared with the primary form of X. nematophila. Production of oxindole and p-hydroxypropionic acid was significantly reduced in the culture broth of the secondary form of X. nematophila. The reduced EBI production resulted in significant suppression in the inhibitory effects on cellular nodule formation and phenoloxidase activity. Culture broth of the primary form of X. nematophila enhanced the pathogenicity of Bacillus thuringiensis ( Bt) significantly more than the culture broth of the secondary form. Furthermore, this study developed a highly efficient "Dual Bt-Plus: to control both lepidopteran insect pests Plutella xylostella and Spodoptera exigua, by mixing two effective Bt strains along with the addition of potent bacterial metabolites or 100-fold concentrated X. nematophila culture broth.

• 대한치과보철학회지
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• 제16권1호
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• pp.32-37
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• 1978

The purpose of this study was to apply the position, the form and the angle of the attrition in the natural maxillary central incisors shown on the labial surface to the artificial teeth in the field of prosthetic dentistry. So we should exactly alter the molds of artificial teeth in individual cases in order to make artificial teeth more natural. 226 extracted teeth of the maxillary central incisors were chosen as materials. I have exactly examined the teeth with a magnifying glass and a circular graduator under concentrated light. The observation brought me the following results: 1) The attrition was most prevailing at the range from the mesial angle to the middle part of cutting edge in the left maxillary central incisor, and distal angle of cutting edge in the right maxillary central incisor. 2) On the attrite form of both angles, the angulated form was more than 4 times as frequent as rounded form in the mesial angle, and almost equal in the distal angle. 3) On the attrite form of cutting edge, mesial attrite form including mesial angle was most frequent in the left maxillary central incisor, and distal attrite form including distal angle in the right maxillary central incisor. 4) The angle made by the labial surface and the attrite surface was about $39^{\circ}$, and more than 70% of the total examined teeth were included at the range from $31^{\circ}\;to\;50^{\circ}$. 5) None attrite form at the cutting edge was about 12% and completely attrite form at the cutting edge was about 27% of examined teeth.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 추계 학술논문 발표대회
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• pp.4-5
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• 2019

With recent advances in computer technology, the ratio of free-form building designs to those of the past is increasing gradually. However, the current technology of free-form structure is very low. The core technology for free-form building implementation is the manufacturing technology of FCP (Free-form Concrete Panel), which indicates an unformed outside, and through the development of FCP manufacturing technology, the construction technology of free-form architecture can be enhanced. The inside and outside of an free-form building should be represented by the designer's intended curvature, and the panel's thickness by segment should be constant. For this reason, the technology that keeps the thickness of panels constant during the FCP production process is a key technology that can improve the quality of FCP. In this study, a basic study on ways to maintain a constant thickness of FCP is conducted.

• 한국의류학회지
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• 제45권1호
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• pp.200-216
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• 2021

This article considers short-form fashion videos as distinguished from fashion films, defines the concept, details the expressive characteristics of short-form fashion video, and reveals the method of producing it. For the methodology, a literature review was conducted to derive the concept and expression techniques. A case study was also performed to define the expressive characteristics. Five short-form fashion videos were also produced based on the results. The final results are as follows. First, short-form fashion video was defined as a fashion medium on the purpose of fashion communication within 60 seconds and classified by three digital image formats. Second, the result of analyzing the expression of the short-form fashion video shows the simplicity and reconstitution, characterization and remediation, borderless and expansion, and synesthesia trigger of the fashion image. Third, five short-form fashion videos were produced based on the theme of the digital garden. It shows that the short-form fashion video intensively expresses the content as a medium whose sensational expression is more prominent than the composition of the story by the short running time that reflects the taste of digital mainstream.

• 한국구조물진단유지관리공학회 논문집
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• 제13권2호통권54호
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• pp.137-144
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• 2009

본 연구에서는 최근 계단공사의 시공성 개선을 위하여 새롭게 제안된 Hi-Form 접합부를 대상으로 동특성 정보를 이용하는 계확정기법을 응용하여 접합부의 강성평가를 수행하였으며 해석 시 동 접합부의 합리적인 모델링기법을 제시하였다. 실험 및 해석결과, 균열패턴 및 하중-변형관계 그리고 손상분포로부터 Hi-Form 접합부는 완전한 응력전달을 위한 강접합으로 간주하기 어려운 것으로 나타났으며, 실험결과에 근거하여 Hi-Form 접합부를 약 50%의 강성감소 요소로 모델링 할 것을 제안하였다.

• 한국환경생태학회지
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• 제23권1호
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• pp.30-40
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• 2009

본 논문은 주암호 복내천 인공습지 조성 후 4년간 식물 변화를 Numata 식의 생활형을 이용하여 분석하였다. 2002년 12월에 준공된 주암호 복내천 인공습지의 식재종은 10과 13속 12종 3변종으로 총 15종류가 식재되었다. 식재종의 3가지 성질의 생활형을 보면 휴면형(Dormancy form)은 다년생수생식물(HH)이 6종으로 가장 많고, 지하기관형은 $R_5$, $R_3$, $R_{2-3}$이 각각 4종, 산포기관형은 풍수산포형(D1)이 10종, 생육형은 직립형(e)이 가장 많았다. 인공습지 준공후 5년이 경과된 모니터링의 최종년도에 조사된 3가지 성질의 생활형은 종수와 개체수는 증가하였으나 생활형 구성비 (%)에 대한 경향성은 큰 변화는 없었다. 휴면형은 1년생육상식물(Th)이 43종, 24.29%, 지하기관형은 $R_5$가 산포기관형은 $D_4$형과 $D_1$형, $D_{1,4}$형이 전체의 77.39%를 차지하고 있었다. 생육형은 직립형(e), 총생형(t), 일시적로제트형(pr), 분지형(b), 로제트-직립형(ps) 순으로 조사되었으며, 이들 종들이 전체의 64.97%를 차지하고 있다. 결과적으로 주암호 복내천 인공습지의 경우 휴면형은 천이가 진행될수록 다년생식물의 구성비율이 높아 습지 천이의 선구종들인 1년생식물이 우점하는 식생형이 점차적으로 안정된 다년생 습지식생의 유형으로 천이가 진행되고 있음을 알 수 있다. 번식형은 지하기관형인 단립식물($R_5$)이 우세하나 달뿌리풀 등과 같은 땅위에 연결체를 만드는 R4식물로 천이가 진행될 것으로 보이며, 산포기관형은 습지의 특성상 바람이나 물에 의하여 운반되는 풍수산포형과 수변 목본식물의 발달로 인한 중력산포형이 유리할 것으로 판단된다. 생육형은 습지의 경우 총생형이 우세할 것으로 판단되며 육상은 인위적.자연적 교란에 의하여 다양한 유형의 생육형이 공존할 것으로 판단된다.

• 대한한의학회지
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• 제34권1호
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• pp.103-115
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• 2013

Objectives: This study proposes a new form of English translation in comparison with that shown in English books related to Sasang Constitutional medicine formulae which have been published up to now. Methods: This study formulated a new form of English translation guidelines by making a comparative analysis of the English translation cases listed in "Korean-English Dictionary of Oriental Medicine", "Longevity and Life Preservation in Eastern Medicine", and "Introduction to Sasang Constitutional Medicine". Results: This study as a common rules suggested that names of preparation form should be placed at the very end of the formula name and the first letters of the major words of the formula name should be capitalized. In addition, for the sake of accuracy in English translation of the formula name, this study divided the formula names into 8 types. The 8 sorts of types include: (a) Materia Medica + Preparation Form, (b) Materia Medica + Indication + Preparation Form, (c) Materia Medica Numbers + Preparation Form, (d) Indication + Preparation Form, (e) Concept + Preparation Form, (f) Concept + Materia Medica + Preparation Form, (g) Concept + Indication + Preparation Form, (h) Etcetera. In these types, medicinal herbs should be written in scientific name, and translation of indication can follow Noun+~ing participle form. In case of the terms having a Korean-medicine-based meaning, this study aimed for source-oriented translation. Conclusions: This study provides a general English translation method and examples of the formula names for Sasang constitutional medicine.