• 제목/요약/키워드: Expansion Method

Search Result 3,556, Processing Time 0.027 seconds

The Expression of Fashion Design Using a Maximalism Character (맥시멀리즘 특징을 이용한 패션디자인의 표현성 연구)

  • Kim, Hyun-Jin;Lee, Eun-Sook
    • Fashion & Textile Research Journal
    • /
    • v.13 no.1
    • /
    • pp.7-16
    • /
    • 2011
  • Maximalism is the code which has a power to interpret a fashion phenomenon expressed complexly and variously in the multicultural society. In the 21st century, maximalism which reappeared is not the expression by a method only. It is presenting the experimental design for the new pursuit through the mixture such as expansion, splendor, variety, decoration, distortion of configuration or transformation, and composition. Therefore, this study aims at analyzing expression of fashion design by four types(expansion, decoration, mixture, non-structure) materializing a feature of maximalism expressed in the domestic and foreign collection works from 2005 to 2010. The research results are as follows. 1. Expansion: It was showed artificial, formative, unique, and odd teatures through the expansion of the upper half of the body, the lower half of the body, and both of them. 2. Decoration: It was showed the actual decoration considering functionality and practicality and the decoration emphasizing and unique character and featuring domination and emphasis. 3. Mixture: It was showed through the mixture of the contrary textiles or the different sex image. 4. Non-structure: It showed the non-structure of the avant-garde trend and non-structure through decoration, detail, adjustment direction of a dress.

N.M.for the Effect of P.T. on Resicual Stress Relaxation (잔류응력 완화에 미치는 상변태의 수치적 모델링)

  • 장경복;손금렬;강성수
    • Journal of Welding and Joining
    • /
    • v.17 no.6
    • /
    • pp.84-89
    • /
    • 1999
  • Most of ferrous b.c.c weld materials may experience martensitic transformation during rapid cooling after welding. It is well known that volume expansion due to the phase transformation could influence on the relaxation of welding residual stress. To apply this effect practically, it is a prerequisite to establish a numerical model which is able to estimate the effect of phase transformation on residual stress relaxation quantitatively. For this purpose, the analysis is carried out in two regions. i.e., heating and cooling, because the variation of material properties following a phase transformation in cooling is different in comparison with the case in heating, even at the same temperature. The variation of material properties following phase transformation is considered by the adjustment of specific heat and thermal expansion coefficient, and the distribution of residual stress in analysis is compared with that of experiment by previous study. consequently, in this study, simplified numerical procedures considering phase transformation, which based on a commercial finite element package was established through comparing with the experimental data of residual stress distribution by other researcher. To consider the phase transformation effect on residual stress relaxation, the transition of mechanical and thermal property such as thermal expansion coefficient and specific heat capacity was found by try and error method in this analysis.

  • PDF

Simultaneous Implant Placement with Modified Ridge Splitting/Expansion Technique in the Narrow Edentulous Alveolar Ridge : 3 Cases Report (좁은 치조골에 변형된 치조능 분할술/확장술을 이용한 임플란트 동시 식립 : 3 가지 증례보고)

  • Lee, Jong-Bin;Lee, Jae-Hong;Kim, Young-Taek
    • The Journal of the Korean dental association
    • /
    • v.53 no.8
    • /
    • pp.545-557
    • /
    • 2015
  • The modified ridge splitting/expansion technique combined with guided bone regeneration (GBR) for implant surgery is used to expand the narrow and atrophied edentulous alveolar ridge. Also, the simultaneous implant placement after ridge splitting/expansion technique can reduce the treatment and healing time. This case report includes three patients with a narrow edentulous alveolar ridge of the 2 to 4mm. All three patients underwent a fracture of thin buccal cortical bone plate, and these defects were corrected by the use of the guided bone regeneration (GBR). After 7 to 18 months, all surgical area was stable, and all implant showed a good healing state on the clinical and radiographic examination. In conclusion, though this surgical method is technique sensitive, the modified ridge splitting/expansion technique combined with GBR for implant surgery is recommended for a horizontal augmentation in the narrow edentulous alveolar ridge.

Moment Evaluations of Gimbal Expansion Joints for Liquid Rocket Engine Propellant Pipes (액체로켓엔진 배관 김발 신축 이음 모멘트 평가)

  • Yoo, Jaehan;Moon, Ilyoon;Lee, Soo Yong;Choi, Chunghyeon
    • Aerospace Engineering and Technology
    • /
    • v.12 no.1
    • /
    • pp.105-110
    • /
    • 2013
  • The gimbal expansion joint for the pipe line of a liquid rocket engine undergoes high pressure and cyclic rotational displacement loadings. In present study, the moment analyses and tests of the internal-type gimbal expansion joint for the engine were performed. The moment components due to spring stiffness, friction and lateral force were obtained using a analytic method and their sums at low and high pressures were compared with the test results. Also, applying a $MoS_2$ dry film lubricant to the pin of a external hinge expansion joint, it is tested that the galling of the pin was removed and the friction coefficient was decreased for low pressures.

Conflicts and Resolutions due to the Expansion of Urban Heritage - Focusing on Historic Sites and Hanok Areas in Seoul -

  • Hyun Chul Youn;Seong Lyong Ryoo
    • Architectural research
    • /
    • v.25 no.2
    • /
    • pp.29-40
    • /
    • 2023
  • The purpose of this study is to analyze the conflicts caused by the spatial expansion in two types of urban heritage in Seoul. To explain the national and professional orientation found in each spatial transformation, the study brought the concept of 'historic state' and 'epitome,' thereby examining the operating system of the conflicts. Field observations and stakeholder interviews were performed based on literature and historical research. The study results are as follows. ①In the case of Gwanghwamun and Donuimun, the spatial expansion is to find the historic state of the sites. Gwanghwamun with high national status and substance, conflicts show a pattern that spreads to memory conflicts. Donuimun is relatively unknown and has no substance so that a flexible method of digital restoration was applied. ② In the case of Ikseon-dong and Bukchon hanok, they show heterogeneous spatial expansion. The conflicts in relation to this is caused by the epitome of hanok. In Ikseon-dong, illegal installation of structures(non-epitome) is prevalent, while in Bukchon, there was a process of transferring the new basement(non-epitome) as part of the hanok. ③Conflicts in Gwanghwamun can be coordinated by referring to the digital restoration of Donuimun, and conflicts in Ikseon-dong can be resolved by taking Bukchon as a precedent.

Effect of Thoracic Joint Mobilization and Breathing Exercise on The Thickness of The Diaphragm, Expansion of The Chest, Respiratory Function, and Endurance in Chronic Stroke Patients

  • Hyunmin Moon;Jang-hoon Shin;Wan-hee Lee
    • Physical Therapy Rehabilitation Science
    • /
    • v.12 no.3
    • /
    • pp.278-292
    • /
    • 2023
  • Objective: This study was performed to investigate the effects of thoracic joint mobilization and breathing exercises on diaphragmatic thickness, chest expansion, respiratory function, and endurance in patients with chronic stroke. Design: Randomized controlled trial Methods: The study included 24 chronic stroke patients who were randomly divided into two groups. The experimental group (12 people) performed 15 minutes of thoracic joint mobility exercises and 15 minutes of breathing exercises, three times a week for 6 weeks, 30 minutes each time. The control group (12 people) received 15 minutes of conservative physical therapy and 15 minutes of breathing exercises, 3 times a week for 6 weeks, 30 minutes per session, the same as the experimental group. The experimental and control groups performed the same breathing exercises. To assess training effectiveness, changes in diaphragm thickness, chest expansion, respiratory function, and endurance were measured. Results: As a result, the experimental group exhibited significant improvements in diaphragm thickness, chest expansion, and respiratory function. The endurance mode also displayed significant enhancement (p<0.05), a finding consistent with the control group. However, the experimental group displayed more substantial improvements in non-affected diaphragm thickness and thoracic expansion compared to the control group (p<0.05). Conclusions: Drawing from these findings, breathing exercise which combine thoracic mobilization, will be actively utilized in addition to physical therapy interventions in clinical trials as an effective intervention method.

Numerical Analysis and Laboratory Experiment of Rapid Restoration of Underground Cavity Using Expansive Material without Excavation (팽창재료를 이용한 지하공동의 비개착식 긴급복구 공법에 대한 실내실험 및 수치해석)

  • Lee, Kicheol;Choi, Byeon-Ghyun;Park, Jongho;Kim, Dongwook
    • Journal of the Korean Geosynthetics Society
    • /
    • v.17 no.1
    • /
    • pp.55-64
    • /
    • 2018
  • The purpose of this study is to evaluate the suitability of emergency underground cavity restoration method filling cavity with expansive material based on numerical analysis. For the numerical analysis, experiments were conducted to evaluate properties of expansive material. Based on the measured expansion pressure of the expansive material from the experiment, behavior of underground cavity restoration with various cavity dimensions (variation of height and width of rectangular-shape cavity) was numerically assessed. As a result of analysis, the vertical displacements of the top and bottom of cavity were significantly influenced by the cavity width and lateral displacements of cavity sides were highly dependent on cavity height. These vertical and lateral displacements were increased with increasing expansion pressure of expansive material. Also, when the expansion pressure was applied, the vertical displacement of the upper surface layer of the road was less dependent on cavity height, and was greatly influenced by cavity width.

Prediction of Impact Energy Absorption in a High Weight Drop Tester by Response Surface Methodology (반응표면법을 사용한 고 중량물 낙하시험기의 충격에너지 흡수량 예측 연구)

  • Kang, Hoon;Jang, Jin-Seok;Kim, Da-Hye;Kang, Ji-Heon;Yoo, Wan-Seok;Lee, Jae-Wook
    • Journal of the Korean Society of Manufacturing Process Engineers
    • /
    • v.15 no.3
    • /
    • pp.44-51
    • /
    • 2016
  • This paper presents the characteristics of the energy absorption in an expansion tube type impact absorber that is applied to a high weight drop tester and the use of a response surface methodology to predict the impact energy absorption. In order to identify the characteristics of the energy absorption, a set of finite element analysis was conducted with Abaqus Explicit. Moreover, the ISCD-II sampling method and a first order polynomial were used to build a response surface. As a result, we demonstrated that the impact energy could be controlled by four main design variables, namely an expansion pipe's thickness, inner radius, pressing die's expansion angle and expansion ratio. Additionally, we observed the relationship between the four main design variables and the impact energy absorbing time, displacement, and maximum impact force.

Review of Debate over the Expansion of Public Medical Facilities to Enhance the Public Role in the Medical Care Sector (의료의 공공성제고와 공공의료기관 확충 논의의 검토)

  • 이규식
    • Health Policy and Management
    • /
    • v.11 no.1
    • /
    • pp.107-130
    • /
    • 2001
  • During the last year, we had a very severe situation with the strike of physicians working in medical facilities. From that time, many politicians and scholars insisted on the expansion of public hospitals to enhance the public role in the medical care sector. They think that private medical facilities work for profit motivation and that the high proportion of private to whole facilities is an obstacle to the public function of medical care under social insurance system. They found that one of the reasons for failing to prevent the physicians' strike was the high proportion of private facilities. Others insisted that the strike was not a good reason for the expansion of public hospitals. The physicians' strike was a very rare case, and it is not a good basis for generalization of the discussion of public hospitals. Last year almost all apprentice physicians in public facilities took part in the strike, and consequently the public hospitals also lost the role of public function. They view this increasing involvement of government in the medical sector as improper and the cause of inefficiencies. In this paper we review the debate over the expansion of public facilities. To clarify the debate, we review traditional criteria for the role of government in a market system and to apply these criteria to medical care. There are two traditional areas where government Is acknowledged to have a role in a market system: market imperfections and market failure. Where market imperfections and market failure exist, there may be a role for government. The justifications for government intervention are consumer protection and the existence of externalities. One of externalities is to provide medical care for the poor. The appropriate measures to provide medical owe to the poor can be sought in both demand and supply side subsidies. National health insurance is a method of demand subsidies and establishment of public hospitals is a method of supply side subsidies. Under the National Health Insurance System, the expansion of public hospitals is not an appropriate subsidy policy.

  • PDF

A Study on the Method for Releasing the Internal Pressure of the Propane Cylinder caused by Liquid Expansion (액팽창을 고려한 프로판용기의 내압 해소방안에 대한 연구)

  • Yim, Sang-Sik;Jang, Kap-Man;Lee, Jin-Han;Park, Gi-Dong;Kim, Ki-Bum
    • Journal of the Korean Institute of Gas
    • /
    • v.19 no.5
    • /
    • pp.98-103
    • /
    • 2015
  • Liquefied petroleum gas can be charged up to 85% of cylinder volume by enforcement regulations of safety control and business of liquefied petroleum gas act. The charged mass by enforcement regulations is considered by liquid expansion of internal liquefied petroleum gas at $65^{\circ}C$. But the temperature of liquid would not be suspended under $65^{\circ}C$ in a cylinder or portable vessel at certain situation. In the thermodynamics view point, the cylinder can be exposed to high pressure by liquid expansion. Consequently, it can be possible to potential risk such as physical explosion. Hence, this paper will offer a method of estimated internal pressure by liquid expansion at critical state in the closed system. Also, the structural factor which is given rise to volume increasement of cylinder is offered by experiment. This paper is expected as crucial reference for a cylinder design of liquefied petroleum gas.