• 건축역사연구
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• 제20권5호
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• pp.7-29
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• 2011

This research was to suggest the types according to structural system of the pagoda in ancient East-Asia and analyze the pagoda to the west of Mireuksaji temple site by these types. It will be possible to understand consistently the relation of the various form of the pagoda. The results of this research were described separately as follows. 1. The Buddhist pagodas founded in the ancient East Asia can be categorized according to their structural system, which provide us with insight to understand the interrelationship of categories. The pagoda is mainly classified into three categories. The first consists of two structures, an internal and an external structure. The second exposes its internal structure to the outside, and the third has the external components changing into the internal ones. 2. Although the pagoda to the west of Mireuksaji Temple Site have an internal and an external structures, it actually solves the structural problem by adopting the masonry structure in the outside as well as in the inside. Especially in this structural consideration can be found in the stylobate and the foundation structure of the pillar. The plan of the pagoda to the west of Mireuksaji Temple Site was intended to reveal the plane of the post-lintel layered construction which has a member, a main pillar, and the inner space in the cube with stones.

• Earthquakes and Structures
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• 제13권2호
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• pp.103-118
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• 2017

In vertical seismic isolation (VSI), a building is partitioned intentionally by vertical layers into two dynamically different substructures for seismic response reduction. Initially, a 1-story frame was partitioned into two substructures, interconnected by viscous and visco-elastic links, and seismic responses of the original and the vertically isolated structures (VIS) were obtained, considering a large number of stiffness and mass ratios of substructures with respect to the original structure. Color contour graphs were defined for presentation and investigation of large amounts of output results. Dynamic characteristics of the isolated structures were studied by considering the non-classical damping of the system, and then the effects of viscous and visco-elastic link parameters on the modal damping ratios were discussed. On this basis, three states of mass isolation, interactional state, and control mass were differentiated. Response history analyses were performed by Runge-Kutta numerical method. In these analyses, interaction of isolation ratios and link parameters, on response control of VIS was studied and the appropriate ranges for link parameters as well as the optimal ranges for isolation ratios were suggested. Results show that by using the VSI technique, seismic response reduction up to 50% in flexible substructure and even more in stiff substructure is achievable.

• 건축역사연구
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• 제23권4호
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• pp.19-33
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• 2014

Recently, conservation and utilization of cultural heritage has been regarded as importance. So, various research papers about maintenance of the remains have been presented in many conferences. But most of researches have focused on introduction about maintenance methods and explanation about maintenance concepts of remains. And even in case of a few papers treated post-evaluation about maintenance of the remains the criteria of the evaluation has tended to somewhat subjective. So, the purpose of this study is to show the objective post-evaluation indexes which was developed by Delphi AHP methods. This research was proceeded in two stages. First, we arranged the evaluation index in a hierarchy to be made through the analyses about references and researches about maintenance of remains. 304 evaluation articles were elicited through the process. And then, elicited evaluation articles were classified with 'conservation' and 'utilization'. Second step was to figure out importance and validity of hierarchical evaluation articles with twice questionnaire surveys. This research used interval scale to comprehend validity and AHP method to evaluate relative importance of each other articles.

• 대한두개안면성형외과학회지
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• 제25권1호
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• pp.11-16
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• 2024

Background: The pathogenesis of orofacial cleft (OFC) is multifactorial, involving both genetic and non-genetic factors, the latter of which play a key role in the development of these anomalies. This paper addresses the incidence of OFC in Indonesia, with a focus on identifying and examining the distribution of contributory factors, including parental medical history, pregnancy history, and environmental influences. Methods: The study was conducted through the collection of primary data. An interdisciplinary research team from Indonesia administered a standardized questionnaire to parents who had children with OFC and who had provided informed consent. The case group comprised 133 children born with cleft lip and/or palate, and the control was 133 noncleft children born full-term. The risk factors associated with OFC anomalies were analyzed using the chi-square test and logistic regression. All statistical analyses were performed using SPSS version 25. A p-value of 0.05 or less was considered to indicate statistical significance. Results: The study comprised 138 children, of whom 82 were boys (59.4%) and 56 were girls (40.6%). Among them, 45 patients (32.6%) presented with both cleft lip and cleft palate, 25 individuals (18.1%) had a cleft palate only, and 28 patients (20.3%) had a cleft lip only. OFC was found to be significantly associated with a maternal family history of congenital birth defects (p<0.05), complications during the first trimester (p<0.05), consumption of local fish (p<0.05), caffeine intake (p<0.05), prolonged medication use (p<0.05), immunization history (p<0.05), passive smoking (p<0.05), and X-ray exposure during pregnancy (p<0.05). Conclusion: The findings indicate close relationships between the incidence of OFC and maternal medical history, prenatal factors, and environmental influences.

• 건축역사연구
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• 제28권6호
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• pp.31-42
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• 2019

The harsh economic conditions of Buddhist temples in late Joseon dynasty, and the prevalence of the Buddhānusmrti(念佛) practice, which is a practice of reciting Amita Buddha(阿彌陀佛), led Buddhist temples to organize the Buddhānusmrti association(念佛契) in the nineteenth and early twentieth centuries. For the practices and the activities of organization, an architectural facility was required; thereby, many temples had a Yeombul-dang(念佛堂). However, only a few of the Yeombul-dang have survived and are known today. This research investigates the ways temples tried to acquire Yeombul-dang buildings during the period and their architecture characteristics by reviewing historical records and documentary works of literature. In this research, Yeombul-dang is found to have various types of building names and building forms. Different hall names such as Amitābha Hall(佛殿), Yosa(寮舍) and Daebang(大房) were used as Yeonbul-dang. The commonalities and differences in terms of building forms, spatial elements composition and layouts were found depending on how they were acquired. The Yeombul-dang were most commonly built as multi-complex buildings consisting of worshiping rooms and residential areas. Most of Yeombul-dang were located in the central areas of the temple site. On this basis, this research suggests the possibility that many Yeombul-dang is still being used under different names and for different purposes.

• Child Health Nursing Research
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• 제10권2호
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• pp.196-204
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• 2004

Purpose: This research was to determine the characteristics of dysmenorrhea among girls, identify the factors affecting dysmenorrhea. Method: The study subjects were 1653 high school student in Busan Metropolitan city. The data were collected by a self-administered questionnaire between November 1 and November 30, 2002. Descriptive statistics, t-test, one-way ANOVA with Scheffe' test, and stepwise multiple regression analysis in SPSS program were used for data analysis. Result: Students suffering from slight dysmenorrhea made up the majority 52.9％, whereas those with serious cases represented 29.8％. Regarding the measures taken to cope with dysmenorrhea, most of the respondents took analgesics 52.8％. A high points of dysmenorrhea was associated with irregular meal habits(p<0.01), unbalanced diet(p<0.05), stress(p<0.01), and health awareness(p<0.01), first menstruation before they reached 13 (p<0.01), heavy bleeding(p<0.01), family history(p<0.01). Factors affecting the dysmennorrhea of the respondents included the extent of bleeding, family history, health awareness, age during the first menstruation, and degree of stress, accounting for 13.1％ of the total variance. Conclusion: To manage dysmenorrhea among girls, the results of the research indicate that students need to have proper awareness of health and manage stress through health education. Likewise, they need to be given positive follow-up management through a holistic nursing approach.

• 혜화의학회지
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• 제22권1호
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• pp.49-56
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• 2013

Objectives: The objectives of this study are to determine both what information Korean Medicine(KM) doctors want from medical classics and how classic KM knowledge should be structured. Methods: KM doctor survey was conducted in October 2012 via E-mail to determine what information Korean Medicine doctors want to collect from a larger volume of existing classics. Specialist survey was made in October 2012 through questionnaire and 8 workshops were held between April 2012 ~ February 2013 to discuss how to reorganize classic KM knowledge. Results: With two surveys and 8 workshops, we built a conceptualization of the classic KM knowledge system for KM practice. KM doctors wanted to engage with the design of KM knowledge system informed by authentic medical classics, and hoped that more information on common disorders would be added to the table of contents of classic KM books than now. A comprehensive knowledge system was also required to maximize information sharing. Conclusions: Future KM knowledge systems need to be more comprehensive and include more information about disorders with which patients commonly consult KM doctors.

• 천문학논총
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• 제30권2호
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• pp.169-171
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• 2015

NGC147 and NGC185, paired satellites of the Andromeda galaxy, possess the same order of mass and analogous structures, but they show different star formation and different amounts of interstellar gas and dust. Therefore, we present the first reconstruction of the star formation history of NGC147 and NGC185. Asymptotic Giant Branch stars are highly evolved stars that are brightest in K-band. This maximum K-band magnitude is related to the birth mass of stars. As a result, we have found a 9.9 Gyr old single star formation epoch for NGC185 followed by relatively continuous star formation. NGC147, however, has passed through two star formation episodes; one is as old as ~6 Gyr and the other is as recent as ~850 Myr. Asymptotic Giant Branch stars are also important dust factories; by fitting Spectral Energy Distributions to observed near and mid infrared data for each star, we were able to measure the dust production rates of individual stars; on order of $10^{-5}M_{\odot}yr^{-1}$. Hence, we estimate the total mass entering the interstellar medium to be $1.06{\times}10^{-4}M_{\odot}yr^{-1}$ and $2.89{\times}10^{-4}M_{\odot}yr^{-1}$ for NGC147 and NGC185.

• International Journal of Aerospace System Engineering
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• 제5권2호
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• pp.1-7
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• 2018

This study examines the history of Korean aviation industry and presents the investment strategy based on the evidence and the 4th industrial revolution. Looking at the evolution of the Korean aviation industry and its technological development will be a great help to support industrial and technological innovation in the future. The modern aviation industry is divided into stages of development, focusing on maintenance of equipment introduced in advanced countries, localization through license assembly, production of products based on technology, and international joint development. The development of aeronautics technology has been progressing towards a general improvement of economic efficiency, aircraft safety efficiency through environmental-friendliness, unmanned operation, and downsizing. The Korea Aerospace Research Institute has secured key technologies through development of several aircrafts such as Experimental Aircraft Kachi, EXPO Unmanned Airship, Twin-engine Composite Aircraft, Canard Aircraft, Multi-Purpose Stratosphere unmanned-airship, Medium Aerostats, Smart UAV, Surion, EAV-2H, KC-100, and OPV. The development strategy is discussed at the level of the evidence-based investment strategy that is currently being discussed, and so the investment priorities in aircraft is high. Current drone usage and development direction are not only producing parts using 3D printer, but also autonomous flight, communication (IoT, 5G), information processing (big data, machine learning). Therefore, the aviation industry is expected to lead the fourth industrial revolution.

• 대기
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• 제28권4호
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• pp.491-507
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• 2018

This study collected and analyzed records related to the Asian dust phenomenon in Korean history books. I collected a wide range of records from diverse sources and identified data for analysis. 290 records were selected through this process. These records provide a variety of information including the occurrence time and duration of the phenomenon, other natural phenomenon occurring at the same date, descriptions of the phenomenon, and so on. Reports on, Asian dust in the historical records was not continuous or uniform. However, their appearance in certain months of the year is similar to that observed in modern times. In addition, I collected 90 records showing it that can be largely divided into two viewpoints which they were a natural calamity or an unusual phenomenon. Generally, natural phenomenons in historical books are mostly recorded in viewpoint of unusual phenomenon. Nevertheless, research result verified the record as actual observational data. Consequentially, it also indicates that this data is important for research from a meteorological point of view. I think that the data collected through this study can be helpful to modern meteorological studies related to the Asian dust phenomenon.