• 한국의류산업학회지
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• 제7권6호
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• pp.617-623
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• 2005

The purpose of this study was to examine the consumers' purchasing behaviors of budget-priced cosmetics. Questionnaires used for this study were composed of 44 questions including 9 questions about budget-priced cosmetic purchasing behavior, 15 questions about satisfaction, 15 questions about repeat purchasing intention, 1 question about the reason of satisfaction or dissatisfaction, and four questions about demographic variables. Questionnaires were administrated to 317 people who were Daegu & Kyungpook region residents and had shopping experience on budget-priced cosmetics during 2 weeks from March 2005. Respondents' age was limited from 20 to 40. Data were analyzed by using correlation, crosstabulation analysis, and frequency analysis utilizing SPSS/WIN. The results were as follows. Consumers went to budget-priced cosmetics' shops 'for low price', 'for trial' and 'for curiosity'. The best purchased products among the budget-priced cosmetics were basic cosmetics, and the second purchased products were make-up cosmetics. 41.4% of the whole respondents answered that they spent 5,000~10,000won per one time visit, and 65% of those answered they visited once or twice per a year and once per two or three months. In this study a level of satisfaction for the entire products, consumers neither unsatisfied nor fully satisfied. For the question of the intention to repurchase for the budget-priced cosmetics, the respondents answered that they will not positively purchase again. A level of satisfaction and the intention to repurchase had positive correlations. The reason which consumers satisfied with the products was chiefly related to price and that which consumers unsatisfied the products was related to products themselves.

• 한국의류산업학회지
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• 제11권6호
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• pp.953-960
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• 2009

The natural dyeing of fabrics with myrobalan extract was investigated. After dyeing of silk, cotton and rayon with myrobalan extract, the dyeability of myrobalan extract was evaluated with the conditions of concentration, temperature, time, repeat-numbers, pH, mordants variables, the changes of dyeability and surface colors by methods of mordanting and color fastness. The wavelength of maximum absorption of the colored solution from myrobalan extract appeared at 272 nm. Therefore, the substance of myrobalan extract was verified as tannin dyes. The optimum dyeing of fabrics was carried out at 30%(o.w.f) dye concentration. Silk fabrics dyed with myrobalan extract showed the highest K/S value at the temperature of $80^{\circ}C$ when it was dyed for seventy minutes, while cotton and rayon fabrics showed the highest K/S value at the temperature of $90^{\circ}C$ when they were dyed for seventy minutes and thirty minutes, respectively. Dyeing operation was carried out in acidic dyebath of pH 3. The K/S value of silk fabric was higher in pre-mordant stage than in post-mordant, while the K/S values of cotton and rayon fabrics were higher in post-mordant stage. The surface colors of dyed fabrics were different according to used mordants: Al and Cu mordanted fabrics were dyed in yellowish colors, while Fe mordanted fabric was dyed in khaki-black color. Light-fastness of the color fastness was improved in Fe-mordant. Washing-fastness was relatively good, and dry cleaning-fastness of dyed fabrics was excellent.

• 한국의류산업학회지
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• 제16권1호
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• pp.43-54
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• 2014

In textile industry, needs for various weave drafts have been increased to produce high qualified textile goods. One of disadvantages of traditional textile industry was spending time and money on manual sampling. Nowadays, however, weave draft design and sampling using CAD programs reduce these consumption efficiently. Therefore, this study aimed to provide high qualified woven fabrics by weave draft designs influenced by geometric patterns. First, We analyzed geometric patterns, except for dot, stripe, and checks, in fashion collections from 2009 to 2014 S/S. Then, based on these analyses, design concepts were decided. Third, weave drafts influenced by geometric patterns were designed with weave CAD program, TEX PRO 10.0 by Youngwoo CNI inc. Forth, We simulated fabrics woven by new drafts using CAD programs, depending on fibers, yarns, density of woven, colors, and finishes. Unclassified geometric patterns would be expressed by small size patterns that influenced by retro moods, square patterns with various color variation, zigzag lines, and pieces of puzzles. Three design concepts were decided as greenness, neoclassic, and romantic chic. Thus, geometric patterns for printing were created as drafts for general looms, and one repeat of each draft were provided. According to the design concepts, we designed 13 fabrics with 4 geometric patterns weaving drafts. All Drafts were designed with CAD programs. Finally, same drafts were simulated as woven fabrics for both S/S and F/W seasons by changing each element, such as fiber, yarns, density, colors, and finishes.

• Childhood Kidney Diseases
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• 제21권2호
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• pp.41-46
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• 2017

Purpose: Thin glomerular basement membrane nephropathy (TBMN) is, along with the IgA nephropathy, the most common cause of asymptomatic hematuria in Korean children. TBMN is usually a benign renal disease not requiring treatment and is associated with a good prognosis, but some cases hematuria is indicative of a state of progressive renal insufficiency. We aimed to retrospectively evaluate clinical manifestations and renal prognosis of patients with TBMN. Methods: Among the 428 renal biopsies performed on children at Yeungnam University Hospital between January 2000 and February 2017, 167 patients were diagnosed as having TBMN. We retrospectively investigated 167 pediatric patients and identified 59 children with follow-up duration >3 years. Results: Among 59 patients, there were 33 boys and 26 girls. Mean age of onset of hematuria was $7.18{\pm}2.64$ years, and mean time from onset of disease until a renal biopsy was performed was $2.48{\pm}2.10$ years. There were no clinical features or laboratory findings among studied children to indicate decreased renal function during follow-up; however, one case progressed to chronic kidney disease (CKD) due to an unknown cause. There were seven patients among these related a positive family history of hematuria or renal insufficiency. Concluson: Although almost all patients had normal renal functions during follow-up, there were one patient who progressed to CKD and seven patients with family history of hematuria or renal insufficiency. Moreover, four among the 428 patients over 17 years underwent repeat renal biopsies, which showed results different from their earlier biopsies.Thus, large-scales studies may be required to determine long-term prognosis of TBMN in children, and further evaluation for Alport syndrome in TBMN cases is essential.

• Journal of Microbiology and Biotechnology
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• 제28권2호
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• pp.338-346
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• 2018

Two molecular epidemiologic methods, IS6110 restriction fragment length polymorphism (IS6110-RFLP) and 24-locus mycobacterial interspersed repetitive unit-variable-number tandem repeat (MIRU-VNTR), are used worldwide in studies of Mycobacterium tuberculosis (MTB). Conversely, because of its poor resolution, pulsed-field gel electrophoresis (PFGE) is not widely used for MTB. In this study, we improved the 24-locus MIRU-VNTR and PFGE protocols and compared the effectiveness of these approaches for the molecular typing of MTB using 75 clinical isolates obtained from a cohort investigation of high-risk populations infected with MTB. The 24-locus MIRU-VNTR method demonstrated superior discriminatory ability, followed by PFGE and IS6110-RFLP. Next, we analyzed six isolates with clear epidemiologic connections; that is, isolates from patients who attended the same school. IS6110-RFLP and PFGE identified these samples as the same type. By contrast, according to MIRU-VNTR, two isolates differed from four other isolates at one locus each; one isolate was identified as Mtub29 and the other as QUB-26. In summary, the 24-locus MIRU-VNTR assay was the most useful molecular typing method among the three methods investigated due to its discriminatory power, short time required, and availability as an epidemiologic investigation tool. PFGE was the second-best method. Compared with the other loci assessed in the 24-locus MIRU-VNTR assay, the Mtub29 and QUB-26 loci appeared to exhibit greater variability during transmission.

• Asian-Australasian Journal of Animal Sciences
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• 제20권5호
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• pp.653-660
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• 2007

In this study, we have investigated sequence variants in the PRNP gene of 20 individuals belonging to the Korean cattle, and have analyzed and compared genetic features between varieties of other cattle breeds. Of the 73 sequence variants identified in Korean cattle, 27 were identified for the first time in this study, whereas 46 of these polymorphisms had previously been isolated. We discovered a 2.6 kb SNP hot spot region localized on the putative promoter region of the PRNP gene. Furthermore, the copy numbers of the octapeptide repeat (24 bp indel) which is detected on the coding sequence (CDS) of the PRNP exhibited a completely homozygous 6/6 genotype which is dominant in other cattle breeds. We also characterized a new 19 bp/10 bp allele located on the putative promoter region of the PRNP gene, which represented 0.71 in allele frequency. To the best of our knowledge, this report is the first to address polymorphisms of the PRNP gene structure in Korean cattle in which BSE has yet to be discovered. Therefore, our findings may prove useful with regard to our current understanding of allelic diversity in bovine species, and may also provide new insights into the genetic factors associated with susceptibility or resistance to BSE.

• Tribology and Lubricants
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• 제29권1호
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• pp.46-50
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• 2013

In this study, the frictional behaviors of articular cartilage against a Co-Cr alloy in two types of kinematic motions were compared. Cartilage pins were punched from the femoral condyles of porcine knee joints, and Co-Cr alloy disks were machined from orthopedic-grade rods and polished to a surface roughness ($R_a$) of 0.002. Friction tests were conducted by using a pin-on-disk-type tribotester in phosphate buffered saline (PBS) under pressures of 0.5, 1, and 2 MPa. All tests were performed in the repeat pass rotational (ROT) and the linear reciprocal (RCP) sliding motions with the same sliding distance and speed of 50 mm/s. The coefficients of friction of the cartilage against the Co-Cr alloy increased with the sliding time in both kinematic motions for all contact pressures. The maximum coefficients of friction in RCP motion were 1.08, 2.82, and 1.96 times those in ROT motion for contact pressures of 0.5, 1, and 2 MPa, respectively. As the contact pressure increased, the coefficients of friction gradually increased in RCP motion, whereas they decrease and then increased in ROT motion. The interaction between the directional change of the shear stress and the orientation of collagen fiber in the superficial layer of the cartilage could affect the change in the frictional behaviors of the cartilage. A large difference in the coefficients of friction between the two kinematic motions could be interpreted as differences in the directional change of shear stress at the contact surface.

• 한국공간구조학회논문집
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• 제6권1호
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• pp.101-109
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• 2006

내진 댐퍼 브레이스를 가진 강구조물은 브레이스가 지진입력에너지를 충분히 흡수함으로써 주요한 구성부재의 치명적인 피해를 현저하게 저감시키는 것이 가능하므로, 이 시스템 도입에 따른 거동특성 파악 및 적용성에 대한 연구가 활발히 진행되고 있다. 내진 댐퍼 브레이스를 가진 강구조물의 설계에 있어서는 구조물에 대한 브레이스의 강성비를 결정하여야 하며, 내진성능이 우수한 구조물을 설계하기 위해서는 강성비에 따른 구조물의 지진응답 특성을 파악할 필요가 있다. 본 연구에서는 소성설계에 기초하여 내진 댐퍼 브레이스의 수평 강성비에 따른 강구조물의 초기 부재단면를 설계하고, 지진응답해석을 수행하여 초기 부재단면 설계의 타당성 검토 및 동적거동 특성을 파악한다.

• 한국콘텐츠학회논문지
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• 제8권4호
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• pp.63-70
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• 2008

본 논문은 임의의 펄스 레이저 송신기에서 방사되는 레이저 펄스 신호를 실시간으로 수신하여 수신된 레이저 펄스열(pulse train)의 펄스 반복주기(pulse repeat interval: PRI)의 형태와 반복 시간을 계산하는 방법에 대하여 기술하였다. 레이저 송신기에서 방사되는 펄스열의 형태와 주기는 고정(fixed), 지터(jitter), 삼각파 등 매우 다양하며, 이러한 레이저 신호의 PRI 패턴을 구하기 위해서 펄스도래시간(time of pulse arrival)의 1차 차분과 2차 차분을 이용하는 방법을 제안하였다. 제안된 방법은 TOA의 1차 차분의 표준편차가 평균값의 5%이하이면 수신된 펄스열은 고정 PRI 패턴 또는 지터 PRI 패턴이며, 5% 이상이면 삼각파 또는 톱니파 등의 PRI 패턴으로 분리한다. 본 알고리즘을 이용하여 펄스열을 분리한 결과 신호 분석능력이 우수하여 레이저 감시 시스템 등에 사용할 수 있을 것으로 판단된다.

• 한국의류산업학회지
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• 제10권4호
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• pp.479-488
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• 2008

The purpose of this study was to re-interpret the traditional patterns in modern point of view and connect them to the apparel textile design to use them widely in our real life. For this, a documentary research on the traditional patterns and arabesque patterns was made first, and then, through the manual and photoshop workings, two apparel textile designs were suggested. As a result, the followings were acquired: First, the arabesque pattern, which is a traditional pattern of Korea, has a continuous life power and a natural formative characteristics. In its pattern, there is an abundant possibility of change. So, it has a wide usability regardless of time and space. As the symbolic image of the arabesque pattern is connected with the instinctive beauty sense of human beings, it has shown the more adhesive affinity that any other materials. Second, two kinds of textile design were suggested. The motif of work 1, "Fragrance of Woman," was the richness and the harmony, and so a lotus arabesque pattern was selected to present its concept, "Classic Elegance." The expression technique was to use a manual work and cloths to make it a voluminous one. The motif of work 2, "Green Field" was to show the clean beauty with a lotus arabesque pattern. Its concept was the "Natural Elegance," and the expression technique was to repeat the motif by using the Adobe Photoshop to complete the work.