• Journal of Labour Economics
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• v.40 no.2
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• pp.1-29
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• 2017

We examine the extent to which students' performance relative to peers affects their career choice. Specifically, we analyze the relationship between a student's mathematics ranking in his/her school and the likelihood of choosing Mathematics and Science track in high school. Using a panel dataset of students in Seoul, we measure a student's performance using two variables: absolute performance and relative performance. The former measures a student's performance relative to the entire sample, while the latter measures performance relative to the student's peers in the same school. After controlling for test scores and other characteristics, we find that the students with a poor relative ranking are 11 percentage points less likely to choose the Mathematics and Science track. Relative performance affects girls more greatly than boys. Although relative performance affects a student's self-efficacy and class participation, our accounting exercise suggests that this channel accounts for only 12 percent of the impact, implying that students may respond to the relative ranking mostly due to other factors, such as strategic consideration to perform well in college applications.

• Journal of the Korean Society for Advanced Composite Structures
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• v.5 no.2
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• pp.1-8
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• 2014

Fiber reinforced polymeric plastic (FRP) materials have many advantages over conventional structural materials, i.e., high specific strength and stiffness, high corrosion resistance, right weight, etc. Among the various manufacturing methods, pultrusion process is one of the best choices for the mass production of structural plastic members. Since the major reinforcing fibers are placed along the axial direction of the member, this material is usually considered as an orthotropic material. However, pultruded FRP (PFRP) structural members have low modulus of elasticity and are composed of orthotropic thin plate components the members are prone to buckle. Therefore, stability is an important issue in the design of the pultruded FRP structural members. Many researchers have conducted related studies to publish the design method of FRP structures and recently, referred to the previous researches, pre-standard for LRFD of pultruded FRP structures is presented. In this paper, the accuracy and suitability of design equation for the local buckling strength of pultruded FRP I-shape compression members presented by ASCE are estimated. In the estimation, we compared the results obtained by design equation, closed-form solution, and experiments conducted by previous researches.

• Journal of the Korean Society of Costume
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• v.55 no.4 s.94
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• pp.1-15
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• 2005

For every country, the flag is a major symbol that represents the country. Establishing image though the use of the country's symbol is more important for achieving national competitiveness in this global age. In Korea, Taekuki has not been actively applied to fashion products, however Korean people began to realize the Taekuki as a motif of fashion with 2002 World Cup. Thus, research on fashion product development applying Taekuki is needed. This research developed designs for fashion product development applying Taekuki. In addition, through suggesting various applied motives, this research explored the product possibility of global fashion design that represents Korean identity and fashion. For research method, after research on fashion design process, design development was progressed according to the 4-phases that comprehends processes previous researchers presented. First, in the problem recognition phase, background on the introduction of Taekuki to products and Taekuki fashion during 2002 World Cup was analyzed. Then, the need and possibility of fashion product development applying Taekuki's formative characteristics were found. Second, in research and analysis phase, meaning and history of Taekuki as well as flag fashion product developments in the U.S. and England examples were reviewed. Also, individual interviews with experts and consumers were conducted to collect qualitative data regarding product and design direction. Third, in idealization for problem solving phase, 62 designs including 43 apparels and 19 accessories were emerged. Finally, in evaluation phase, 40 university students majoring design evaluated designs' creativity, function, uniqueness, symbol, aesthetics, and harmony. Through this research, it is expected that fashion products applying Taekuki will be formly established as a fashion item. Furthermore, it is also expected that product development in other categories, brand planning, and product development using other national symbols such as name, anthem, and flower will be followed.

• Journal of the Korean Institute of Gas
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• v.4 no.2 s.10
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• pp.1-6
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• 2000

In this experiment, we made the plasma reactor which adhere needle electrode in order to treat safely an NOx which was included in the gas. Also we experimently investigated characteristics of equipment and inspected efficiency. As a reaction gas, by using mixture gas of $NO/N_2$ and $N_2/O_2$, we setted up initial NO concentration and gas flow rate was set at 2 ${\iota}$/min. As a reaction characteristics of NOx, when discharge input power was high, NO concentration decreased and when the oxygen concentration increased, the NO decomposition was easy and decomposition energy efficiency was high. Also in case that NO concentration increased, NO decomposition energy efficiency was high but decomposition rate was low. The characteristics of ozone, when discharge input power was high, ozone increased and when $NO/N_2$ concentration increased, the ozone decreased.

• Journal of The Korea Institute of Healthcare Architecture
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• v.26 no.2
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• pp.63-69
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• 2020

Purpose: The purpose of this study is to identify the neuro architecture items and detailed elements that can be considered for each detailed space in the future medical space design development through the development of a checklist of neuro architecture elements that can be utilized in medical space design. Methods:: This study first develops the neuro architecture element through theoretical research and prepares the basic plan for the checklist through consultation with the employees of the design company in which the researcher works. Finally, a checklist was developed through a survey of nine experts, including designers, hospital staff, and professors. Results: The result of this study 1) The neuro architecture component was developed in seven categories: light, color, sound, air, image, nature, ergonomic furniture and equipment. 2) Specifically, it consists of 49 elements including 7 light elements, 7 color elements, 5 sound elements, 4 air elements, 11 image elements, 6 elements in nature, 9 elements in ergonomic furniture and equipment. It was. 3) Although each of the detailed elements is more preferred according to the space, in general, all the elements should be considered in the context of the hospital space design. Implications: The checklist on the neuro architecture element will enable the development of the most faithful design as an efficient and useful tool for applying the neuro architecture philosophy that considers human beings in hospital design and pursues healing and happiness.

• Journal of Korean society of Dental Hygiene
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• v.12 no.6
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• pp.1101-1110
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• 2012

Objectives : The purpose of this study is to research and to analyze the relationship between oral health state of infants and oral health awareness of their parents. Methods : The study has been conducted for 196 infants ranging from the age 18 to 60 month and their parents who have visited three dental clinics in Gyeongju city. The questionnaire has been made to identify the parents' oral health knowledge and behavior, while the dentist has examined the dental care, toothbrushing, and malocclusion of infants. Results : According to the results, it has been found out that there is correlation between subject's health status and oral health status where the higher point of subject's health status lead to the point of oral health status accordingly. Also it has been additionally recognized that there is the relationship between the awareness of parents and the oral health status of their infants in the same way. Conclusions : The parents who have low oral health awareness are required by oral health professionals to be provided with information on infant oral health, in order to promote and to maintain healthy oral status of their infants. And the specific training on method how to care oral health is needed. In addition, the government should take the detailed measures by extending infant's medical benefits to draw their attention to the issue.

• Journal of Korean Library and Information Science Society
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• v.32 no.3
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• pp.275-305
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• 2001

This study is to analyze factors affecting collection size by the type of materials of university libraries in Korea. The results of this study are summarized as follows; ①Factors affecting library holdings in volumes: national univ. - volumes loaned, total number of courses, library materials expenditure; private univ. - undergraduate enrollments, library materials expenditure, volumes loaned, number of graduate departments; total univ. - undergraduate enrollments, volumes loaned, library materials expenditure ②Factors affecting periodical titles: all the libraries - graduate enrollments ③Factors affecting the size of nonbook materials: national univ. - graduate enrollments, number of undergraduate departments; private and total univ. - volumes loaned ④Factors affecting volumes added: national univ. - volumes loaned, number of graduate courses; private univ. - number of undergraduate enrollments; total univ. - volumes loaned ⑤Factors affecting the size of nonbook materials added: national univ. - number of graduate enrollments, number of undergraduate departments; private and total univ. not extracted.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.12
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• pp.7309-7316
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• 2014

In this paper, a triple-band multiplexer using a microstrip transmission line was designed and fabricated to make use of a low power portable base station. This multiplexer was used in the triple-band including the cellular, WCDMA and LTE mobile frequency band, and designed to have an insertion loss of 0.8 dB, low SWR of 1.5 in the passband and a band rejection of 15 dB in the stopband. From the measured results obtained by a confidence test for the fabricated multiplexer samples, the maximum insertion loss and SWR of the fabricated multiplexer samples in all passbands of 824-894MHz, 1920-2170 MHz and 2500-2600 MHz were below 0.71 dB and 1.38, and the attenuations in the stopbands were better than 15 dB. Therefore, the triple-band multiplexer has good performance and satisfies the design specifications.

• The Journal of Korean Medicine
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• v.29 no.4
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• pp.133-145
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• 2008

Objectives: The aim of present study was to investigate recovery effects of Hirudo, which has been used clinically in diabetes therapy. Methods: We established three groups: normal, control, Hirudo, and assigned 6 rats to each group. The normal group was not treated by any process and fed by normal saline. The control & Hirudo groups were administered streptozotocin (STZ) to induce diabetes. Hirudo extract was orally administered to the Hirudo group for 10 days. After 8 weeks, the rats were sacrificed and their body weight, 24hrs urinary protein excretion, glucose, albumin, BUN, creatinine, total-cholesterol, LDL-cholesterol, triglyceride in blood, and level of glycation end-product (AGE) and transforming growth factor (TGF-${\beta}1$) in serum were measured. Morphological profiles and morphometric studies of the kidney cortex, renal transforming growth factor (TGF-${\beta}1$) expression, and renal receptor for advanced glycation end-products (RAGE) expression were studied. Results: The following results were obtained. The protein amount in urine per 24hrs of the Hirudo-treated group as compared to the control group was significantly reduced. The BUN and creatinine level in serum of the Hirudo-treated group as compared to the control group was significantly inhibited. The construction change in kidney of the Hirudo-treated group as compared to the control group was significantly inhibited. The factor of the Hirudo-treated group as compared to the control group was significantly inhibited, which induced the construction change in kidney. Conclusions: The above results suggest that Hirudo partially improved the function of the kidney.

• The Journal of the Korea Contents Association
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• v.20 no.7
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• pp.149-160
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• 2020

The purpose of this study is to analyze factors affecting a grade maintenance of the non-graded group by LTCI(Long-Term Care Insurance, NHIS). The predictors were examined grade maintenance of the non-graded group(non-grade of A, B, C). The results were as follows: this study found that predisposing factors of the grade maintenance of non-graded of LTCI were significantly related to age, sex, death. Enabling factors of the grade maintenance of non-graded of LTCI were significantly related to household state, income level. Need factors of the grade maintenance of non-graded of LTCI were significantly related to dementia, grade of first grading, retry of applying for long-term care assessment. Based on the finding of study, implications and future research directions were discussed for policy considerations.