This study examined the 17th century wedding ceremonies of princes and princesses recorded in the "Garyedeungrok(嘉禮謄錄)". The Joseon dynasty royal weddings were held outside the palace, so it could have influenced wedding ceremonies of commoners. Royal weddings for princes and princesses were considered to be on a level between that of a king and commoners. Wedding procedure of princes and princesses was carried out under the leadership of the royal family who officiated at a marriage with the king's approval. In addition, kindred of the king and high-ranking officials participated as the maid of honor in the wedding parade. This was completely different between the royal wedding and the scholar-gentry ones. A difference between the prince and the princess was that the princess paid her respect to the shrine of the house of her groom after the wedding ceremony. However, there was no process for the prince's bride. There also existed a wide disparity in the wedding goods of princes and princesses. The prince and the king's son-in-law both held a wedding ceremony to wear Chopo, but there was a difference in decoration or quantity of Danlyeong(團領) Cheollik(帖裏) Hoseul(護膝) belts. Only princes were allowed to use the ornamental knife and the embroidered pouch. While both the princess and prince's wife wore No-ui(露衣) and Jangsam(長衫) as the wedding clothes, there was discrimination of position in terms of hair decoration, Hwalhansam(闊汗衫), skirt, Hosu(胡袖) and Ni-ui(裏衣). There was also a difference of quantity of Jeogori and skirts, as well as various styles of gold decorations in order to distinguish the Gongju(daughter of the king) and the Gunju (daughter of the crown prince)'s position.
Studied on the changes of physical properties according to frequency of washing of sample such as cotton, ramie, wool, cotton knit, T/C. The results are as follows :1. The tensile strength in cotton, wool, and T/C was not changed by 5 times washing but in cotten knit was increased because hang-down phenomenon. 2.The crease resistance of cellulose fiber was decreased by repeated washing. In the case of wool, That was decreased considerably because of decreasing of elasticity and increasing of density caused by shrinking after washing. 3.The abrasion strength of wool was increased with increase in frequency of washing because of thickness caused by shrinking. 4.By repeated washing, the pills was generated in all of the samples and quantity of pills was increased with increase in frequency of washing, the pills was generated in all of the samples and quantity of pills was increased with increased in frequency of washing. Specially, in the case of cotton knit and wool, the pilling was remarkable. 5.The physical properties of dry cleaned wool was superior than that of wet cleaned wool.
The Journal of Korean Institute of Communications and Information Sciences
/
v.38C
no.12
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pp.1106-1113
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2013
For patients who have senile mental disorder such as dementia, quantity of excercise and amount of sunlight are important clue for dose and the treatment. Therefore, monitoring health information of daily life is necessary for patients' safety and healthy life. Portable & wearable sensor device and server configuration monitoring data are needed to provide these services for patients. Watch-type device(smart watch) which patients wear and server system are developed in this paper. Smart watch developed includes GPS, accelerometer and illumination sensor, and can obtain real time health information by measuring the position of patients, quantity of exercise and amount of sunlight. Server system includes the sensor data analysis algorithm and web server that doctor and protector can monitor through sensor data acquired from smart watch. The proposed data analysis algorithm acquires quantity of exercise information and detects step count in patients' motion acquired from acceleration sensor and to verify this, the three cases with fast pace, slow pace, and walking pace show 96% of the experimental result. If developed u-Healthcare System for dementia patients is applied, more high-quality medical service can be provided to patients.
In case measurements are made on units of production in time order, it is reasonable to expect that the measurement errors will sometimes be first order autocorrelated, and a technique to test such autocorrelation is required to give good control of the productive process. Tool-wear process provide an example for which regression model can sometimes be useful in modeling and controlling the process. For the control of such process, we present a simple method for testing first order autocorrelation in regression errors. The method is based on Bayesian test method via Bayes factor and derived by observing that in general, a Bayes factor can be written as the product of a quantity called the Savage-Dickey density ratio and a correction factor ; both terms are easily estimated from Gibbs sampling technique. Performance of the method is examined by means of Monte Carlo simulation. It is noted that the test not only achieves satisfactory power but eliminates the inconvenience occurred in using the well-known Durbin-Watson test.
The effect of gas mixing ratios during gas nitrocarburizing treatment on the formation of compound layer and the mechanical properties has been studied for hot work tool steel by using a combined heat treating technique. The thickness of compound and diffusion layers has been shown to grow as a parabolic relation with increasing the amount of ammonia at a given flow quantity of $CO_2$ gas. The compound layer consists mainly of ${\varepsilon}-Fe_3$(C, N) with small amounts of ${\gamma}^{\prime}-Fe_4N$ and ${\alpha}$-Fe. The combined heat treated hot work tool steel has shown that the thickness of compound layer increases with increasing nitrocarburizing time, but the rate of growth slows down as gas nitrocarburizing time goes more than two hours. Tensile properties have given a remarkable improvement. In particular, the wear resistance of combined heat treated hot work tool steel has exhibited an improvement of about 165% greater than that obtained from conventional quenching and multi-tempering treatments.
Journal of the Korean Society for Precision Engineering
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v.25
no.6
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pp.159-167
/
2008
Cooling lubricants are used in machining operations in order to reduce friction at the tool-chip and tool-workpiece interfaces, cool both chip and tool, and remove chip. Furthermore, they influence a strong effect on the shearing mechanisms and, consequently, on the machined surface quality and tool wear. However, several researchers state that the costs related to cutting fluids is frequently higher than those related to cutting tools. Moreover, the cooling lubricants cause an increase in both worker's health and social problems related to their use and correct disposal. Therefore, many researchers have focused on the environmentally conscious machining technologies. One of the technologies is known as MQL(Minimum Quantity Lubrication) machining. In this paper, an experimental model to obtain the optimal cutting conditions in MQL turning was suggested, and the effects of cutting conditions on surface roughness and cutting force were analyzed. For these purposes, FFD (Fractional Factorial Design) and RSM (Response Surface Methods) were used for the experiment. Cutting force and surface roughness with different cutting conditions were measured through the external cylindrical turning of Al 6061 based on the experiment plan. The measured data were analyzed by regression analysis and verification experiments with random conditions were conducted to confirm the suggested experimental model.
This study aims to consolidate the qualitative growth of knit design thru the creation of high value-added brand and design, in the state of active trend for competitive promotion of professional knit brand, by collapsing the border line between the knitwear market and the woven one. In accordance with the market situation of increasing a demand of knitwear products, I wish to awaken the importance of knit design thru this study, to survey domestic knit brand products and their planning directions and to plan for the high value-added knitwear products, thru presenting the problems of knit industry and developing knitwear design. This study is focused on showing process of planning and items developed personally by me in charge of developing products practically at the job site of knit industry. From the stage of planning for goods, I suggested the 2007 s/s goods of M company as a strategy of distinctiveness caused by the problems with rival companies, and also proposed a method conducted by the actual business. Setting up M company's s/s concept of the year 2007, I suggested a plan of quantity, time of forwarding, color, fabrics, etc. as well as the process and schedule thru order, and based on the above result, I made a planning for 2007 s/s knitwear for middle-aged women.
This study aims to give practical help to the pattern making of baggy pants produced in large quantity from industrial fields. The functionality of crotch part is a key element to decide wear sensation and comfort of pants as having direct influence on movements of legs in pattern designing of baggy pants. The industrial patterns of baggy pants in various styles that are released currently in Korea were collected and a comparative analysis was conducted on them for the thesis. First, samples of men baggy pants were collected from three different brands and compared the completion sizes. Secondly, it studied the most appropriate patterns as quantifying the appropriateness of movements through fitting tests. Finally, the study verified the differences of visual images by surveys of professional groups. The conclusions obtained from this research are as follows. In terms of aesthetic attribute among the three brands, A baggy pants, which had a small size tolerance, were the most appropriate. Meanwhile concerning the appropriateness of movement, B baggy pants were shown to be the most appropriate. This reveals explicitly the problem of aesthetic attribute and functionality, which are always in conflict during the pattern design. It is necessary to develop patterns and establish a measurement system that may satisfy both of these factors.
Journal of Advanced Marine Engineering and Technology
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v.22
no.1
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pp.67-76
/
1998
Friction materials for brake linings and clutches have severe performance requirements. The principal function of such frictional elements is to convert kinetic energy to heat, and then either to absorb or to dissipate heat. In order to achieve these objectives, the coefficient of friction must be as high as possible, independent of variations in operating conditions, and the necessary energy conversion must be accomplished with a minimum of wear on the contacting parts. In this study, Al powder, Al bronze powder and Mo powder used in general for automobile brake was sprayed on automobile brake disc to restrain rust and to maintain friction performance. Dynamo and corrosion tests have been carried out. It is concluded that the sprayed disc with Al bronze powder has the most improved frictional performance and anti-corrosive characteristics. The main results obtained can be summarized as follows; 1. From the corrosion current density test for gray cast iron and sprayed disc with powders of Al, Al bronze and Mo, it was cleared that the spray treatment with Al bronze powder showed the most superior anti-corrosive characteristics than other powders. 2. By anode polarization toward the noble direction from corrosion potential, corrosion current density with sprayed brake disc by Al-bronze powder was the lowest. 3. Mean frictional coefficients obtained from dynamo test are as follows : the sprayed disc with Al(99.99%) powder was 0.190 ; the sprayed disc with Al-bronze powder was 0.312 ; the sprayed disc with Mo powder was 0.257 ; the non-sprayed disc of gray cast iron was 0.331. In the case of the sprayed disc Al-bronze powder showed the most excellent frictional characteristics . 4. Amount of burnish quantity obtained from burnish test by dynamometer is as follows : the sprayed disc with Al-powder was 1.079 mm : the sprayed disc with Al-bronze powder was 0.155 mm : the sprayed disc with Mo powder was 0.253 mm : the non-sprayed disc of gray cast iron was 0.241 mm. Al-bronze powder also showed the most excellent burnish characteristics.
The purpose of this study was to investigate the shopping condition of Dongdaemoon Shoppingmall. A depth interview was administered to eight consumers aged 10s through 30s who had shopping experiences at Dongdaemoon Shoppingmall. The contents of interview were about the reasons of preference for Dongdaemoon Shoppingmall, the merchandise categories purchased, assortment, price, shopping environment, and service offered by Dongdaemoon Shoppingmall. The results of this study were as follows: The reasons of consumers' Dongdaemoon Shoppingmall preference were reasonable price, variety of merchandise assortment, easy catch of fashion trend, entertainment place, and opening hour at nighttime. The mainly purchased items were casual and fashionable clothes. Children's wear was mainly bought item by housewives too. The unique design, similar merchandises sold at department stores and new style in early adoption of fashion cycle were perceived as positive aspects, but copied merchandises and large quantity of same merchandise as negative aspects. The fixed price system was not trusted by consumers. Consumers' complaints about shopping condition were crowded pathways and shopping booths, the lacks of facilities such as fitting room, toilet, lounge area, sales persons' service, and difficulty of using credit cards. From these results, some implications for marketing strategies and practices might be suggested. In order to improve the design variety of merchandises, marketers and apparel manufacturers should make efforts by managing merchandise planning, production, selling, and promotion cooperatively. Fixed price system, acceptance of credit cards, and merchandise return/exchange service should be improved. The training the salespersons was the most important and basic step and easy way to get to successful business.
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