• Ceramist
• /
• v.9 no.6
• /
• pp.7-11
• /
• 2006

The status of structural ceramics in Japan is presented. Use of ceramics for structural components had been limited due to their brittleness, and the successful application was wear resistant parts such as thread guides and ceramic cutting tools up to around 1980. Since then, considerable work has been done for applying ceramics to mechanical parts, and automotive components made of silicon nitride were developed and commercialized in 1980s. Unfortunately, the application of silicon nitride to automotive engines is not so popular in these days. Instead, a variety of structural ceramics such as alumina, silicon carbide and zirconia have recently extended the market, and the expanded application includes vacuum process parts for manufacturing semiconductor and liquid crystal devices, refractory tubes for casting aluminum alloy, and dies for optical lens forming. In addition, cordierite honeycombs and diesel particulate filters are widely used in automobiles. In the present review, the recent application of structural ceramics to automobiles and industries in Japan is summarized.

• Journal of the Korean housing association
• /
• v.18 no.2
• /
• pp.121-128
• /
• 2007

The investigation of the apartment housing as a dwelling type has become the most important and popular research subject to understand the housing culture in Korea. In their methods of typological analysis, it is found that most studies represent each unit plan as a simplified architectural drawing. This type of typology, however, has difficulties in processing a large scale of data set because each representation of a plan contain too many informations. To deal with this problem, this study suggests a new graph-theoretical method by which apartment plans can be represented in a more simple and effective way. This new method is also tested against the sample plans from Gangnam-gu area in Seoul to reveal the design logic hidden in plan configuration. Through a series of analyses, it is verified that there exist a design strategy that guides the particular pattern of zoning and allocation of each room in the plan.

• PNF and Movement
• /
• v.7 no.1
• /
• pp.17-23
• /
• 2009

Purpose : To provide a convenient framework for PNF practice, we reviewed the relationship between ICF framework and PNF framework. Methods : We reviewed literatures related with ICF and PNF. Results : ICF model is useful tool for physical therapist who is working in PNF to identify the interactions the components of individual's health, especially the relationship between functioning and disability. A framework for PNF is philosophy which included the concept, functional approach. It is essential to identify primary activity limitation and causal impairment in PNF field and evaluate the their relationship. The ICF model can be used to classify the examination information. Next step is to prioritize the activity limitation and then evaluate the interrelationships among each components of the ICF framework. Conclusions : ICF model guides physical therapist in PNF practice to identify patient problems and evaluate the interrelationship of components of their health. This model is logical framework to directs functional approach as PNF philosophy to be approached the goal.

• Multiscale and Multiphysics Mechanics
• /
• v.1 no.3
• /
• pp.261-270
• /
• 2016

The longitudinal velocity (forward speed) having significant importance in proper running of railway wheelset on track, depends greatly upon the adhesion ratio and creep analysis by implementation of suitable dynamic system on contamination. The wet track condition causes slip and slide of vehicle on railway tracking, whereas high speed may also increase slip and skidding to severe wear and deterioration of mechanical parts. The basic aim of this research is to design appropriate model aimed estimator that can be used to control railway vehicle forward velocity to avoid slip. For the filtration of disturbance procured during running of vehicle, the kalman filter is applied to estimate the actual signal on preferered samples of creep co-efficient for observing the applied attitude of noise. Thus error level is detected on higher and lower co-efficient of creep to analyze adhesion to avoid slip and sliding. The skidding is usually occurred due to higher forward speed owing to procured disturbance. This paper guides to minimize the noise and error based upon creep coefficient.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2001.11b
• /
• pp.933-939
• /
• 2001

A Satellite shipping container must afford the satellite a relatively benign thermal, vibration, and particle environment that is oblivious to the extreme temperatures, sand, dust, vibrations and shocks that can accompany the transportation. In this study, we have designed a vibration isolation system of a spacecraft container that will be used to transport a satellite called KOMPSAT (KOrea Multi-Purpose SATellite) -2 from KARI (Korea Aerospace Research Institute) Taejon to its launch site. To identify the dynamic characteristics of the system, a 1/3-scaled mockup of the container was developed. A large electro-magnetic shaker (Max. 240 KN) was used to excite the mockup, and vibration signals from 20 points were collected for modal tests. Numerical simulations through CATIA 3D Modeling were performed to identify the behavior of isolation springs. The results showed that a simplified model predicts the behavior in a reasonable accuracy. Moreover, the model guides us how to design a full-scaled satellite-shipping container.

• Journal of Internet Computing and Services
• /
• v.10 no.2
• /
• pp.125-132
• /
• 2009

The goal of our research is to develop a smart context-aware guide system that provides a smart and personalized guide services based on implicit awareness of context. As a context-aware guide application, we have developed a location-aware smart bus guide system for Seoul based on PDA and GPS. It guides users to the nearby bus stops and provides users with information about the bus lines at the bus stops.

• Transactions of the Korean Society of Mechanical Engineers A
• /
• v.26 no.8
• /
• pp.1623-1630
• /
• 2002

Recently, much attention is imposed on the design of the fuel assemblies in the Pressurized Light Water Reactor (PWR). Spacer grid is one of the main structural components in a fuel assembly. It supports fuel rods, guides cooling water, and maintains a coolable geometry from the external impact loads. In this research, a new shape of the spacer grid is designed by the axiomatic approach. The Independence axiom is utilized for the design. For conceptual design, functional requirements (FRs) are defined and corresponding design parameters (DPs) are found to satisfy FRs in sequence. Overall configuration and shapes are determined in this process. Detail design is carried out based on the result of the axiomatic design. For the detail design, the system performances are evaluated by using linear and nonlinear finite element analysis. The dimensions are determined by optimization. Some commercial codes are utilized for the analysis and design.

• Korean Journal of Child Studies
• /
• v.34 no.5
• /
• pp.17-41
• /
• 2013

The purpose of this research was to investigate meaning of teachers as they manifest themselves in the emotional regulation of 2year old infants in a daycare center. In addition, the research attempts to provide basic research data that can be used as a guideline for teacher's awareness, roles, attitudes, and classroom management for infant's emotional education in the future. To achieve this goal, participatory observation was conducted in a child care center class for infants under 2 years old from January 17 to January 29, 2012. The teacher is defined as follow : Teachers are authority figures whose image is that of absolute authority, and coupled with their dual role of passive caretakers. Additionally, they function as guides who guided infants through the process of emotional socialization, and played the central role of emotional contagion from whose expression speech and atmosphere the said infants receive much influence. Such results seemed to indicate that teachers today do not fully comprehend the importance of their roles in influencing the emotion regulation of infants.

• Korean Journal of Health Education and Promotion
• /
• v.27 no.3
• /
• pp.59-66
• /
• 2010

Objectives: This paper aims to describe a public health planning model, Mobilizing for Action through Planning and Partnership(MAPP), and to discuss its application in Korea with a specific focus on the Local Public Health System (LPHS) component of MAPP. Methods: Literature content review was performed on research papers on MAPP development and application, MAPP handbook and guides, the guidelines for the 5th Phase Community Health Plan, and a research report on public health center evaluation system. Results: MAPP has been applied to public health planning (the 5th Phase Community Health Plan) and a performance evaluation system for public health center in Korea. The current application is limited to the early stages of the MAPP. Limited or partial application affects the integrity of the model. Follow-through should be strengthened especially for evaluation planning. Conclusion: Systems thinking approaches should be considered for the development of LPHS and strengthening logical and practical linkage between planning and evaluation of community health planning.

• The Research Journal of the Costume Culture
• /
• v.9 no.2
• /
• pp.259-276
• /
• 2001

Hitchcock, "a master of the thriller" "leading figure of thriller", was famous for his work style. He never starts filming until completing a perfect conception in his mind before shooting. He started filming after getting a perfect filming plan adding a picture even one detailed shot picture. Also the movie costumes was not an exception in his movie. He put more main object to express a symbolic meanings by recreating movie costumes which were fit to drama′s subject than function which spoke for contemporary popularity also he guides actors to put on the movie costumes examined previously to shape a definite visual character in that works. This research intends not only to look into symbolic and expressive means of dresses through the movie costumes on thriller appeared in Hitchcock′s movie, but also the comprehension width by grasping importance of the movie-costume and dress image in the movie. Hitchock made about 55 movies, mostly thriller movies, from Number 13(1922) n unfinished work to family plot(1976) ones posthumous work. This research examined his the second half of term works(after 1950) such s Rear Window(1954), Vertigo(1958), Psycho(1960), Torn Curtain(19660, Topaz(1969) and Frenzy(1972) which are generally familiar to the public. In conclusion, we can find that the thriller movie costumes as well s the other movie and appeared a character of the film′s characters, social rank, economic level, personality. But expecially, a costume of Hitchcock′s thriller movie can be contained a characteristic factor of a kind of five.