• Korean Journal of Geomatics
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• 제2권1호
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• pp.47-55
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• 2002

Remote sensing is the science and art of obtaining information about an object, area or phenomenon through the analysis of data acquired by a device that is not in contact with the object, area, or phenomenon under investigation./sup 1)/ EOC (Electro -Optical Camera) sensor loaded on the KOMPSAT-1 (Korea Multi- Purpose Satellite-1) performs the earth remote sensing operation. EOC can get high-resolution images of ground distance 6.6m during photographing; it is possible to get a tilt image by tilting satellite body up to 45 degrees at maximum. Accordingly, the device developed in this study enables to obtain images by photographing one pair of tilt image for the same point from two different planes. KOMPSAT-1 aims to obtain a Korean map with a scale of 1:25,000 with high resolution. The KOMPSAT-1 developed automated feature extraction system based on stereo satellite image. It overcomes the limitations of sensor and difficulties associated with preprocessing quite effectively. In case of using 6, 7 and 9 ground control points, which are evenly spread in image, with 95% of reliability for horizontal and vertical position, 3-dimensional positioning was available with accuracy of 6.0752m and 9.8274m. Therefore, less than l0m of design accuracy in KOMPSAT-1 was achieved. Also the ground position error of ortho-image, with reliability of 95%, is 17.568m. And elevation error showing 36.82m was enhanced. The reason why elevation accuracy was not good compared with the positioning accuracy used stereo image was analyzed as a problem of image matching system. Ortho-image system is advantageous if accurate altitude and production of digital elevation model are desired. The Korean map drawn on a scale of 1: 25,000 by using the new technique of KOMPSAT-1 EOC image adopted in the present study produces accurate result compared to existing mapping techniques involving high costs with less efficiency.

• Journal of Korean Neurosurgical Society
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• 제38권6호
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• pp.435-441
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• 2005

Objective : Expandable cage used for spinal reconstruction after corpectomy has several advantages over nonexpendable cages. Here we present our clinical experience with the use of this cage after anterior column corpectomy with an average of one year follow up. Methods : Ten patients underwent expandable cage reconstruction of the anterior column after single-level or multilevel corpectomy for various cervical spinal disorders. Anterior plating with or without additional posterior instrumentation were performed in all patients. Functional outcomes, complications, and radiographic outcomes were determined. Results : There was no cage-related complication. Functionally, neurological examination revealed improvement in 7 of 10 patients and no patient had neurological deterioration after the surgery. Immediate stability was achieved and maintained throughout the period of follow-up. There was minimal subsidence [<2mm] noticeable in three of the cases that underwent a two-level corpectomy. Subsidence was noted in osteoporotic patients and patients undergoing multi-level corpectomies. Average pre-operative kyphotic angle was 9 degrees. This was corrected to an average of 5.4 degrees in lordosis postoperatively. Conclusion : In conclusion, expandable cages are safe and effective devices for vertebral body replacement after cervical corpectomy when used in combination with anterior plating with or without additional posterior stabilization. The advantages of using expandable cages include its ability to easily accommodate itself into the corpectomy defect, its ability to tightly purchase into the end plates after expansion and thus minimizing the potential for migration, and finally, its ability to correct kyphosis deformity via its in vivo expansion properties.

• 여성건강간호학회지
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• 제20권1호
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• pp.48-61
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• 2014

Purpose: This study was done to explore the essence and meaning of the experience of 'aging', as a process of 40's and 50's women in Korea by applying the Parse's Human Becoming theory (2002). Methods: Data was collected from February to April, 2013, using the phenomenological research method. Data was collected through in-depth informal interview and analyzed following Colaizzi method. After IRB permission and informed consent from the participants, all interviews were recorded with MP3 recorder and transcribed for analysis. Results: Data analysis revealed 112 of meanings, 33 key subject words, 8 subject phrases, and 4 categories. The main themes were elaborated as 'going down' ('Being changed of body and mind', 'Being considered on my identity'), 'going up' ('Being expanded of productive role', 'Being transcendent multi-dimensionally'), 'pausing' ('Becoming more thoughtful about family', 'Looking back'), 'going forward again' ('Age is just a number, 'Contemplating of life and death'). Experiences in aging among women in 40's and 50's enlightened with Parse's theory of Human Becoming in terms of 'going down', 'going up', 'pausing', 'going forward again' appeared simultaneously, rather than consecutively. Conclusion: Women in 40's and 50's require holistic nursing intervention with physical, psychological, socio-economical, and spiritual aspects, rather than focusing on problematic physical symptom relief and prevention of further conditions. It is recommended to develop various nursing intervention considering on different environment, type of experience, and level of human becoming, individually.

• Journal of Yeungnam Medical Science
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• 제35권1호
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• pp.84-88
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• 2018

A 33-year-old woman visited the emergency department presenting with fever and dyspnea. She was pregnant with gestational age of 31 weeks and 6 days. She had dysuria for 7 days, and fever and dyspnea for 1 day. The vital signs were as follows: blood pressure 110/70 mmHg, heart rate 118 beats/minute, respiratory rate 28/minute, body temperature $38.7^{\circ}C$, and oxygen saturation by pulse oximetry 84% during inhalation of 5 liters of oxygen by nasal prongs. Crackles were heard over both lung fields. There were no signs of uterine contractions. Chest X-ray and chest computed tomography scan showed multiple consolidations and air bronchograms in both lungs. According to urinalysis, there was pyuria and microscopic hematuria. She was diagnosed with community-acquired pneumonia and urinary tract infection (UTI) that progressed to severe sepsis and acute respiratory failure. We found extended-spectrum beta-lactamase producing Escherichia coli in the blood culture and methicillin-resistant Staphylococcus aureus in the sputum culture. The patient was transferred to the intensive care unit with administration of antibiotics and supplementation of high-flow oxygen. On hospital day 2, hypoxemia was aggravated. She underwent endotracheal intubation and mechanical ventilation. After 3 hours, fetal distress was suspected. Under 100% fraction of inspired oxygen, her oxygen partial pressure was 87 mmHg in the arterial blood. She developed acute kidney injury and thrombocytopenia. We diagnosed her with multi-organ failure due to severe sepsis. After an emergent cesarean section, pneumonia, UTI, and other organ failures gradually recovered. The patient and baby were discharged soon thereafter.

• 고전문학과교육
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• 제35호
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• pp.123-152
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• 2017

전기(傳奇) 갈래는 시(詩)와 문(文)이 복합적으로 구성된 문체를 특징으로 하는 갈래다. "수이전(殊異傳)" 일문(逸文) "최치원"은 시(詩)가 중요하게 활용된 초기 전기(傳奇) 갈래의 특징을 보여준다. 이 연구에서는 "최치원(崔致遠)"이 시체(詩體)의 비중이 높은 작품이라는 점에 주목하여 시 중심의 읽기 방법을 탐색해 보고자 하였다. 이에 시체를 중심으로 한 첫 번째 독법으로서 한시(漢詩)의 갈래 특성에 천착하여 '운(韻)'의 변화에 주목한 읽기 방법을 제시하고, 둘째로 '흥(興)'을 중심으로 한 음미의 읽기 방법을 제시하였다. 시에 초점을 맞추어 읽게 될 경우, 작품을 읽는 독자는 그 정서적 작용성에 더욱 큰 초점을 두게 되므로, 시 중심의 독법을 통해 "최치원(崔致遠)"의 서정적인 특질은 보다 미학적으로 포착될 수 있다. 시체 중심의 읽기 방법은 복합적인 문체로 구성된 전기(傳奇) 갈래의 다층적인 미학적 특질을 포착하는 독법 중 하나로 제안될 수 있을 것이다.

• 한국융합학회논문지
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• 제10권11호
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• pp.111-116
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• 2019

최근 컴퓨터 능력의 급속한 발전으로 인간과 컴퓨터간의 상호 작용을 편리하게 연결할 수 있는 많은 기술들이 연구되고 있는 상황으로, 전통적인 입력장치를 사용한 GUI에서 3D 모션, 햅틱, 멀티 터치와 같은 신체를 이용한 NUI로 패러다임이 변화되고 있는 추세이다. 인간의 동작을 센서를 이용하여 컴퓨터에 전달하는 많은 연구가 이루어지고 있으며, 3D 객체를 획득할 수 있는 광학 센서의 개발과 더불어 산업 및 의료 분야, 사용자 인터페이스 분야 등으로 응용 범위가 확장되고 있다. 본 논문에서는 립모션을 기반으로 사용자의 손동작에 따라 기본 입력장치인 마우스를 대신하여 제스처를 통한 타 프로그램 실행 및 윈도우즈 제어가 가능하며, 안드로이드 앱과 융합하여 메인 클라이언트와 연결을 통하여, 음성인식과 버튼을 사용해 각종 미디어와 음성 명령 기능을 통한 제어가 가능한 모델을 제안한다. 제안 모델을 통하여 영상, 음악과 같은 인터넷 미디어를 클라이언트 컴퓨터 뿐만 아니라 앱을 통한 원거리 제어가 가능하여, 편리하게 미디어를 시청할 수 있을 것으로 기대된다.

• 항공우주시스템공학회지
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• 제12권1호
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• pp.1-9
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• 2018

본 연구에서는 기존의 하중제어기법을 보완한 하이브리드 제어기법을 제안하였다. 제안된 하이브리드 제어기법은 기존 하중제어기법에서 발생하는 채터링 현상을 제거하고, 높은 충격흡수효율을 얻을 수 있는 제어기법이다. 제어기 설계를 위해 MR댐퍼가 적용된 착륙장치를 구성하고, 착륙장치의 운동방정식을 유도하였다. 다물체 동역학 해석 소프트웨어인 RecurDyn을 이용하여 시뮬레이션 모델을 구성한 후 하이브리드 제어기를 설계하였다. 본 연구의 하이브리드 제어기는 스카이 훅 제어기를 기반으로 최대 스트럿 하중과 변위를 줄일 수 있으며, 부가되는 하중제어 기법을 통해 고효율의 제어기법을 구현할 수 있다. 채터링 방지를 위해 효율적인 제어기법 스위칭과 입력설계(Input Shaping) 기법을 적용하여 낙하 시뮬레이션을 수행하였고, 각각의 결과를 비교하여 착륙 특성에 대해 성능평가를 수행하였다.

• 대한화장품학회지
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• 제28권1호
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• pp.99-115
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• 2002

Tests of stability and toxicity, and clinical evaluation of anti-acne activity suggest that cryptotanshinone, a constituent of the roots of Salvia miltiorrhiza Bunge, is an effective active ingredient for acne vulgaris treatments. Acne vulgaris, called acne or pimples, is the most common disease of the pilosebaceous follicle unit of the skin. It affects nearly 80% of people between the ages of 11 and 30. Approximately 30% of teenagers have acne of sufficient severity to require medical treatment. Acne is a follicular disorder of the skin. It occurs in specialized pilosebaceous units on the face and body. Acne develops when these specialized follicles undergo pathologic alterations that result in the formation of non-inflammatory lesions (comedones) and inflammatory lesions (papules, pustules and nodules). An abnormality of keratinizing epithelium of these follicles, thought to be due to the action of sebum synthesized and secreted by the androgen-sensitive sebaceous glands, leads to inflammation induced by the follicular bacterium Propionibacterium acnes. Therapy involves treatments that modify these pathogenic factors and includes drugs with antikeratinizing, antibacterial and antiseborrheic actions. Acne vulgaris is a very frequent disease, seen primarily in adolescents, involving the sebaceous follicles. Acne vulgaris is characterized by a great variety of clinical inflammatory and non-inflammatory lesions: comedones, papules, pustules, nodules, cysts and scars. Acne vulgaris is a multi-factorial disease. Although its pathogenicity is unclear, extensive studies have shown that hyperseborrhea, superinfection by P. acnes and endocrinologic androgenic changes play a role in the development of acne vulgaris.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제24권6호
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• pp.555-563
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• 2021

Purpose: The aim of this study was to evaluate the pancreatic fat fraction (PFF) using magnetic resonance imaging (MRI) in children with and without obesity and to correlate PFF with body mass index (BMI) z-score, hepatic fat fraction (HFF), and ultrasonography-derived pancreato-perihepatic fat index (PPHFI). Methods: This prospective study included 45 children with obesity and 19 without obesity (control group). PFF and HFF were quantitatively assessed using the abdominal multi-echo Dixon method for MRI. The PPHFI was assessed using transabdominal ultrasonography. Anthropometric, MRI, and ultrasonographic characteristics were compared between the two groups. Correlations between PFF, HFF, PPHFI, and BMI z-scores in each group were also analyzed. Results: The PFF, HFF, PPHFI, and BMI z-score were higher in the group with obesity than in the control group (PFF: 6.65±3.42 vs. 1.78±0.55, HFF: 19.5±13.0 vs. 2.31±1, PPHFI: 3.65 ±1.63 vs. 0.94±0.31, BMI z-score: 2.27±0.56 vs. 0.42±0.54, p<0.01, respectively). PFF was correlated with BMI z-scores, PPHFI, and HFF in the obesity group, and multivariate analysis showed that PFF was strongly correlated with BMI z-score and PPHFI (p<0.05). The BMI z-score was strongly correlated with PFF in the control group (p<0.01). Conclusion: These results suggest that MRI-derived PFF measures are associated with childhood obesity. PFF and PPHFI were also highly correlated in the obesity group. Therefore, PFF may be an objective index of pancreatic fat content and has the potential for clinical utility as a non-invasive biomarker for the assessment of childhood obesity.

• Animal Bioscience
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• 제34권5호
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• pp.824-832
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• 2021

Objective: This study aimed to estimate the genetic parameters and genetic correlations for related feed efficiency, growth, and carcass traits in Hanwoo cattle. Methods: Phenotypic data from 15,279 animals born between 1989 and 2015 were considered. The related feed efficiency traits considered were Kleiber ratio (KR) and relative growth rate (RGR). Carcass traits analyzed were backfat thickness (BT), carcass weight, eye muscle area, and marbling score. Growth traits were assessed by the average daily gain (ADG), metabolic body weight (MBW) at mid-test age from 6 to 24 months, and yearling weight (YW). Variance and covariance components were estimated using restricted maximum likelihood using nine multi-trait animal models. Results: The heritability estimates for related feed efficiency (0.28±0.04 for KR and RGR) and growth traits (0.26±0.02 to 0.33±0.04) were moderate, but the carcass traits tended to be higher (0.38±0.04 to 0.61±0.06). The related feed efficiency traits were positively genetically correlated with all the carcass traits (0.37±0.09 to 0.47±0.07 for KR, and 0.14±0.09 to 0.37±0.09 for RGR), except for BT, which showed null to weak correlation. Conversely, the genetic correlations of RGR with MBW (-0.36±0.08) and YW (-0.30±0.08) were negative, and those of KR with MBW and YW were close to zero, whereas the genetic correlations of ADG with RGR (0.40±0.08) and KR (0.70±0.05) were positive and relatively moderate to high. The genetic (0.92±0.02) correlations between KR and RGR were very high. Conclusion: Sufficient genetic variability and heritability were observed for traits of interest. Moreover, the inclusion of KR and/or RGR in Hanwoo cattle breeding programs could improve the feed efficiency without producing any unfavorable effects on the carcass traits.