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Analysis of Bone Mineral Density Status in Korean Mother : In the Center of One Obstetric Hospital (국내 산모의 골밀도 현황 분석 : 일개 산부인과 전문병원중심으로)

  • Kim, Young-Ran;Kim, Hye-Jin;Choi, So-Young
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.4
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    • pp.320-328
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    • 2019
  • This study was conducted to provide basic data for prevention of osteoporosis by examining the factors affecting bone mineral density in pregnant mothers. This investigation was a descriptive research study that analyzed a total of 137 medical records. Differences in T-score between general and obstetric characteristics were assessed by independent t-tests and one way ANOVA followed by Scheffe's post-hoc test. The mean age of the subjects was 32.4 years and the mean T-score was 0.34. The BMI measured at 4 weeks after delivery was significantly higher in the underweight group than in the normal group and the overweight group (F=11.935, p<.001). The BMD was significantly higher in subjects with sufficient vitamin D than in subjects with insufficient vitamin D, in subjects with insufficient vitamin D than in subjects with deficiency vitamin D (F=4.906, P=0.009). BMD was significantly higher in cases without experience of abortion than those with more than one experience of abortion (t=4.264, p<.001), and the normal delivery was significantly higher than that of cesarean section (t= 2.019, p=.046). Based on the results of this study, it is necessary to actively prevent the factors affecting BMD during pregnancy and delivery. The findings presented herein can be used as basic data for the management of osteoporosis.

Investigation of Death Years and Inter-annual Growth Reduction of Korean Firs (Abies Koreana) at Yeongsil in Mt. Halla (한라산 영실지역 구상나무 고사연도와 시계열적 생육쇠퇴도 조사)

  • Seo, Jeong-Woo;Kim, Yo-Jung;Choi, En-Bi;Park, Jun-Hui;Kim, Jae-Hoon
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.22 no.3
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    • pp.1-14
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    • 2019
  • With a view to developing a database of death years of Korean firs (Abies koreana) at Yeongsil in Mt. Halla and investigating their abrupt inter-annual growth reduction tree-ring analysis was employed. To this end, 10 living trees (YSL) were selected to establish a master chronology and 20 dead trees were used to date their dead years. To investigate the difference in death years by death types, 10 trees, which remained standing (YSSD) out of the 20 dead trees were selected. The rest 10 dead trees were already fallen (YSFD). Two increment cores per tree at breast height were extracted in contour direction using an increment borer. A 106-year master chronology (1911-2016) was successfully established from the 10 YSLs. Through cross-dating between individual YSSD time series and the master chronology, it was verified that 1 YSSD was dead in summer 1978, 1 YSSD between autumn 1999 and spring 2000, 2 YSSDs in summer 2007, 1 YSSD in summer 2010, 1 YSSD in summer 2012, and 1 YSSD in summer 2013. The youngest tree rings of 2 YSSDs having no bark were in 1977 and 2002. For the YSFDs, it was verified that 1 YSFD was dead between autumn 1997 and spring 1998, 1 YSFD between autumn 2001 and spring 2002, 2 YSFDs between autumn 2009 and spring 2010, 1 YSFD in summer 2010, and 2 YSFDs between autumn 2012 and spring 2013, while the youngest tree rings of 2 YSFDs having no bark were in 1989 and 2004. To note, the death years of two trees, one from each death type (YSSD and YSFD), could not be verified due to poor cross-dating with the master chronology. The inter-annual growth reductions of YSSD and YSFD occurred more frequently and intensively than YSL. Typically, the YSFD showed the most frequent and intensive inter-annual growth reduction. On comparing the inter-annual growth reductions with the corresponding records of typhoons however we could not find any reliable relationship. Finally, from prior reports and results of the current study it can be concluded that the death and abrupt growth reduction of korean fir at Yeongsil in Mt. Halla are not caused by only a certain environmental factor but various factors.

Phases of the Discourse Through the Way of Remembering the Japanese Invasion of Korea in 1592 (기억방식을 통해 본 임진왜란의 서사 양상)

  • Eum, Yeong-Cheol;Park, Eun-Mi
    • The Journal of the Korea Contents Association
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    • v.18 no.11
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    • pp.161-170
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    • 2018
  • In this paper, the aspects of recollection discourse during the Japanese Invasion of Korea in 1592 are discussed. As a research method the dialectic of oblivion is used. The results of the study are like these: first, the hero discourse of Lee Soon-Sin was the center of the discourse of the Japanese invasion of Korea in 1592 until the 20th century. In the two books Jingbirok and A War Diary written at that time, the subjective and objective description of the war was essential. However, it has a limit that it can't describe the real situation of the war that the people and the soldiers went through, as it focuses on Lee Soon-Sin's inner thoughts. Second, in the 21st century The Song of Sword written by Kim Hoon deals with the inner mind of Lee Soon-Sin in monologue unlike the usual hero discourse. Although as we can see in the records about the marine righteous army, people centered discourse description of the war shows a different way of discourse about the Imjin War. The movie, Myeongryang directed by Kim Han-Min tries to modify the way of remembering the war and presents the real heroes were the people and Lee Soon-Sin was a additional character in the war by showing a lot of battle scenes in the sea. The truth of history can't be found by only researching the recorded materials. As cultural texts dealing with the way of remembering the war, the novel shows a struggling individual not a hero and the movie focuses on that people's active participation led the victory of the war.

Research of private landscape architecture of the Tang Era in ancient China -based on excavated excellent articles and a book <洛陽名園記> called Nakyangmyungwonki- (중국 고대 당대(唐代) 민간 조경[사가원림(私家圓林)] 연구 - 출토된 명기(明器)와 낙양명원기를 중심으로 -)

  • Park, Kyung-Ja
    • Korean Journal of Heritage: History & Science
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    • v.38
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    • pp.285-303
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    • 2005
  • Through the excavated excellent articles of the Tang era, we have considered the building techniques and styles of a square pavilion, an octagonal pavilion, a miniature hill, a pond, etc., could read building techniques of the scenic structures on ancient literatures including records and additionally about their poetical life at that time and inquired into the arrangement, structure, building techniques, etc. of a miniature hill, a pond, a pavilion, a flowerplant, etc., on Nakyangmyungwonki. Thus, under the research on the private landscape architecture, especially the nobility gardening, around excavated excellent articles and literatures, 'A miniature hill(假山) and a pond for landscaping views formed the center of a garden, and additionally a pavilion was built and flowerplants were set. The miniature hill of laying stones and having a carven, steeping, stratifying, looking like dyed green and birds' singing among hills and eating water on the lakeshore${\ldots}$' was expressed. The pond of digging in the ground and conducting water had its water system developed. There were several kinds of pavilions such as 廳, 堂, 館, 亭, 臺, 樓, 閣, 榭, etc. As examples of landscaping plants, there were a bamboo, a lotus flower, a peony, aromatic trees a pine, a korean spindle tree, a big cone pine, an empress tree, a wild walnut, a peach, a plum, a Japanese apricot tree, an apricot tree, a chrysanthemum, arrowroot vines, etc. Thus, the garden of the Tang era, abundant, diverse and excellent, enjoyed the prime of the period of prosperity. Due to cultural exchange, it is supposed that the period of united Shilla of the same age would meet with the period of prosperity in the developmental history of Korea landscape, based on the nobility garden system '4 different dwelling-houses every season on a record "四節游宅"'.

A Study on the Roles of Daheojang and Maedeupjang in the Joseon Dynasty (조선시대 다회장과 매듭장의 역할 규명)

  • SEOL, Jihee
    • Korean Journal of Heritage: History & Science
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    • v.54 no.3
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    • pp.52-67
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    • 2021
  • This study is an attempt to explore the roles of and the collaborative relationship between Daheojang and Maedeupjang. Daheojang and Maedeupjang share a similar manufacturing process. However, in modern times, Daheojang totally disappeared, and Maedeupjang was designated as an intangible cultural property. The present study will investigate the role of Daheojang and Maedeupjang based on the literature of the Joseon dynasty. Daheojang were craftsmen who made bands and strings of woven or twisted silk strands. They made mangsu and tassels or made knots to produce magnificent artifacts. Maedeupjang complete all steps of the process, from refining, dyeing, combining threads, daheo, maedeup, to the tassel. Daheojang in the Joseon dynasty was the center of this process. Daheojang belonged to almost all Uigwe because it used items ranging from large uso to cushion straps. Dahoe is a craft with various items and techniques. It has been widely used to produce majestic items like formal dresses, ritual ceremony pieces, and mountings, as well as daily items like jodae, pocket straps, and norigae. Based on the records of Uigwe in the late Joseon dynasty, the study explored the collaborative relationship between Daheojang and Maedeupjang. Sambang, the room where both Daheojang and Maedeupjang belong, was the room to produce the royal chair. The royal chair essentially includes large uso. The large uso is an artifact that ties a knot in a thick circle more than two meters long. While Daheojang made rounded daheo, Maedeupjang made delicate and balanced knots. Also, they produced royal inscriptions together with a royal seal with decorative mangsu and a seal of thick rounded daheo. In order to learn about traditional technology, it is necessary to study the system of the times and social trends. Therefore, the study focused on Daheojang, who were common master craftsmen during the Joseon dynasty but now are not familiar to most people.

Comparison of the nutritional indicators of critically Ill patients on extracorporeal membrane oxygen (ECMO) (체외막산소화장치 (ECMO) 적용 중환자의 영양지표 비교)

  • Shin, Nah-Mee;Ha, Suk Yeon;Cho, Yoon Soo
    • Journal of Nutrition and Health
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    • v.54 no.5
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    • pp.489-500
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    • 2021
  • Purpose: This study aimed at investigating the nutritional status, nutritional support, and nutritional indicators of critically ill patients on extracorporeal membrane oxygen (ECMO) in intensive care units (ICU). Methods: This descriptive study obtained data from the medical records of 37 patients who were treated using ECMO at a university hospital in Korea. The patients were admitted to the Korea University Anam Hospital ICU with acute or serious damage to vital organs from January 1, 2014 to June 30, 2016. Results: Although 32 patients (86.5%) were at a high risk of malnutrition, 26 patients (70.3%) were considered normal in terms of nutritional status by the nutritionist at the beginning of their ICU stay. However, after two weeks, nine patients had passed away and only one patient maintained normal status. Parenteral nutrition was started first but took 4.25 ± 6.95 days till initiation. Only eight patients (21.6%) were able to meet their requirement for both calories and protein. The group provided with adequate calorie and protein showed significantly longer use of the ECMO and respirator and longer ICU and total hospital stay than their counterparts. Normal levels of serum albumin and protein of the group at low-risk for malnutrition on the day of initiation of ECMO, which were significantly higher than the high-risk group, declined by the last day of ECMO leading to a lack of significant differences between the two groups. Conclusion: Considering that the nutritional indicators of patients deteriorated as the days on ECMO increased, more aggressive nutritional management to ensure adequate nutritional support should be emphasized from the beginning and throughout the ICU stay.

A Study on the Optimal Setting of Large Uncharged Hole Boring Machine for Reducing Blast-induced Vibration Using Deep Learning (터널 발파 진동 저감을 위한 대구경 무장약공 천공 장비의 최적 세팅조건 산정을 위한 딥러닝 적용에 관한 연구)

  • Kim, Min-Seong;Lee, Je-Kyum;Choi, Yo-Hyun;Kim, Seon-Hong;Jeong, Keon-Woong;Kim, Ki-Lim;Lee, Sean Seungwon
    • Explosives and Blasting
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    • v.38 no.4
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    • pp.16-25
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    • 2020
  • Multi-setting smart-investigation of the ground and large uncharged hole boring (MSP) method to reduce the blast-induced vibration in a tunnel excavation is carried out over 50m of long-distance boring in a horizontal direction and thus has been accompanied by deviations in boring alignment because of the heavy and one-directional rotation of the rod. Therefore, the deviation has been adjusted through the boring machine's variable setting rely on the previous construction records and expert's experience. However, the geological characteristics, machine conditions, and inexperienced workers have caused significant deviation from the target alignment. The excessive deviation from the boring target may cause a delay in the construction schedule and economic losses. A deep learning-based prediction model has been developed to discover an ideal initial setting of the MSP machine. Dropout, early stopping, pre-training techniques have been employed to prevent overfitting in the training phase and, significantly improved the prediction results. These results showed the high possibility of developing the model to suggest the boring machine's optimum initial setting. We expect that optimized setting guidelines can be further developed through the continuous addition of the data and the additional consideration of the other factors.

The Effect of Different Counselors on Treatment Outcome of Tinnitus Retraining Therapy (상담자 요소가 이명재훈련치료의 효과에 미치는 영향)

  • Kim, Woo Jin;Kong, Ji Sun;Park, So Young;Jung, Ki Hwan;Kim, Rae Hyung;Yeo, Sang Won;Park, Shi Nae
    • Korean Journal of Otorhinolaryngology-Head and Neck Surgery
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    • v.60 no.5
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    • pp.209-214
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    • 2017
  • Background and Objectives Tinnitus retraining therapy (TRT) is one of the most effective treatment modalities of tinnitus based on the neurophysiological model proposed by Jastreboff and Hazell. This study was performed to evaluate the effect of counselor factor on treatment outcomes of TRT. Subjects and Method The total of 78 patients who had TRT from three different counselors in a tinnitus clinic of tertiary referral center from Jan 2015 to Dec 2015 were included in this study. Their medical records were retrospectively reviewed to evaluate the therapeutic response to TRT. Results Among 78 patients who were followed-up for more than 6 months, 47, 20, and 11 patients were treated by counselors A, B, C (all ENT specialists), respectively. Counselor A had 15-year-experience of TRT counseling, whereas counselor B and C were well trained but beginners of TRT counseling. Initial clinical characteristics including Tinnitus Handicap Inventory (THI) and tinnitus Visual Analogue Scale (VAS) scores of the patients among three groups were not significantly different. Treatment responses evaluated via THI and most of the tinnitus VAS scores after at least 6 months after TRT were significantly improved in all three groups (p<0.05) with no significant difference between the senior (A) and junior (B, C) group. Conclusion TRT seems to be an effective treatment modality of tinnitus even in this short term follow-up study. Treatment outcomes of TRT may not depend on the counselors once they are well trained and follow the same protocol.

Factors of Determining N-acetylcysteine Administration in Patients with Acute Acetaminophen Poisoning (급성 아세트아미노펜 중독에서 N-acetylcysteine 투여 결정 관련 인자)

  • Lee, Jeong Hwa;Choi, Sangchun;Yoon, Sang Kyu;Shin, Kyu Cheol
    • Journal of The Korean Society of Clinical Toxicology
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    • v.18 no.2
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    • pp.78-84
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    • 2020
  • Purpose: In acute acetaminophen poisoning, the administration of N-acetylcysteine (NAC) can effectively treat the main complications, such as kidney injury and liver failure. In the current situation, measurements of the acetaminophen concentration are not checked in the usual medical facilities. Therefore, this study examined the factors of determining the administration of NAC in addition to the stated amount of intake. Methods: The medical records of patients who visited Ajou University Hospital emergency center with acetaminophen poisoning from January 2015 to December 2019 were reviewed retrospectively. One hundred and seventy-nine patients were initially included. Among these patients, 82 patients were finally selected according to the inclusion criteria in the study. The inclusion criteria were as follows: patients who were 15 years of age or older; those whose ingested dose, ingested time, and body weight were clearly identified; and patients whose acetaminophen sampling time was within 24 hours. Patients were divided into two groups: NAC administered vs. non-NAC administered. The following variables were compared in these two groups: ingested dose, ingested dose per body weight, hospital arrival time after ingestion, suicide attempt history, psychiatric disease history, classification of toxic/non-toxic groups, duration of hospitalization, and laboratory results. Results: Univariate analysis revealed the ingested dose per body weight, hospital arrival time after ingestion, suicide attempt history, and psychiatric disease history to be the determining factors in administering NAC. Logistic regression analysis confirmed that the ingested dose per body weight was the only significant factor leading to an NAC treatment decision. (Odds ratio=1.039, 95% Confidential interval=1.009-1.070, p=0.009) Conclusion: The ingested dose per body weight was the only determining factor for administering NAC in patients with acute acetaminophen poisoning. On the other hand, additional criteria or indicators for the NAC administration decision will be necessary considering the inaccuracy of the ingested dose per body weight and the efficiency of NAC administration.

A Study on The Application of ISO/IEC 17025 Software Accredited Testing Institute Using ISO/IEC/IEEE 29119 and ISO/IEC 25023 (ISO/IEC/IEEE 29119와 ISO/IEC 25023을 이용한 ISO/IEC 17025 소프트웨어 공인시험기관 적용에 관한 연구)

  • Lee, Chang-Hee;Kim, Yoon-Sook;Noh, A-Reum;Yang, Jung-Sim;Kim, Myung-Sup;Song, Sung-Hyun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.12
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    • pp.97-106
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    • 2020
  • The purpose of this study is to determine how to apply ISO/IEC/IEEE 29119 software test procedures and ISO/IEC 25023 software test evaluation items to software-accredited testing laboratories based on the ISO/IEC 17025 international standard requirements. As a method, the overall requirements for their application to a test laboratory were analyzed by mapping ISO/IEC/IEEE 29119 and ISO/IEC 25023 based on ISO/IEC 17025. According to the mapping analysis, a total of 29 documents were created, including quality manuals, procedures, and test guidelines for the operation of the test laboratory. As a result of the study, a test laboratory management system was developed using Confluence 6.15 software by applying the analyzed results of the overall requirements. The test procedures, documents, and records were stored in, and operated from, this system. Verification of suitability for operation of the test laboratory was conducted by KOLAS evaluators through a document review and an on-site audit at the LG Electronics SW Accredited Test Laboratory in Seoul. In conclusion, it was confirmed through the KOLAS evaluation that the test laboratory management system and the operation of the test laboratory are appropriate and, compared with previous cases, the test laboratory operates effectively, and the overall schedule of accreditation could be shortened.