석유협회보 창간 13 돌-석유협회보에 바란다

손은희,Son, Eun-Hui 대한석유협회 1994 석유와 에너지 Vol.1994 No.3

산림복원 대상 후보지 추출을 위한 딥러닝 접근법

손은희,하의린,송정은,박천희,박윤선,김형호 경상국립대학교 농업생명과학연구원 2022 농업생명과학연구 Vol.56 No.6

Many studies using aerial photography and deep learning are increasing for efficient monitoring of the forest resources. We defined six semantic classes of buildings, roads, paddy fields, fields, forests, and barren as forest restoration target sites and explored the optimal methodology for extracting and classifying target sites for forest restoration based on CNN. The datasets (6,640) were divided at a ratio of 75:25 into training (4,980) and validation datasets (1,660). The accuracy of each model was evaluated using pixel accuracy (PA) and Mean Intersection over union (Mean IoU). PA was calculated as 90.6% and Mean IoU was 80.8%, and the Inception-Resnet-v2 model showed excellent accuracy in extracting target sites for forest restoration among the three models. This result has a Spatio-temporal advantage over the existing field survey for forest restoration sites or surveys using aerial photographs by manually. This study will be able to contribute to the classification of forest restoration sites efficiently and support forest restoration. 이미지 인식에 특화된 CNN (Convolutional Neural Network) 기반의 딥러닝 기법은 영상의 항목별 분류가 필요한 다양한 연구에 적용되고있다. 본 연구는 건물, 도로, 논, 밭, 산림, 나지의 6가지 항목을 산림복원 대상 후보지로 정의하고 CNN 기반의 산림복원 대상 후보지 추출 및분류의 최적 방법론을 탐색하였다. 6,640개의 데이터셋을 75:25의 비율로 훈련(4,980개) 및 검증(1,660개)로 구분하여 구축하고 학습에 활용하였다. 모델별 정확도는 픽셀정확도(PA), 평균 교차 겹침 결합(Mean IoU)을 이용하여 평가하였다. 픽셀정확도는 90.6%, 평균 교차 겹침 결합은 80.8%로산정되어 Inception-Resnet-v2 모델이 세 모델 중 가장 산림복원 대상 후보지 추출에 뛰어난 정확도를 보였다. 이 결과는 기존의 산림복원 대상후보지 현장조사 혹은 항공사진을 활용한 조사에 비해 시공간적 이점을 가지며, 향후 산림복원 대상지 선정 자료로 적용 가능성이 있다고 판단된다.

신경병성통증의 치료

손은희 대한의사협회 2021 대한의사협회지 Vol.64 No.7

Background: Neuropathic pain presents a therapeutic challenge because patients cannot be relieved from it, even when all known medical options have been tried. Several treatment guidelines have been provided, and several pharmacotherapies have been proposed with non-pharmacological treatments. This study aimed to present the current pharmacological and non-pharmacological treatments used to treat patients with neuropathic pain. Furthermore, several treatment guidelines for neuropathic pain are compared. Current Concepts: Tricyclic antidepressants, gabapentinoids, and serotonin-norepinephrine reuptake inhibitors are the first-line agents recommended by clinical guidelines in several countries. Tramadol and topical agents are recommended as second-line agents. Opioids and cannabinoids are recommended as third-line agents; cannabinoids are recommended by Canadian treatment guidelines. Combination therapy may be more effective because it results in synergistic pain-relieving effects, and the individual drug dose may be lower. Non-pharmacologic treatment is recommended as third-line or supplementary management because of the lack of evidence. Discussion and Conclusion: Several guidelines have recommended similar drugs; however, it is impossible to completely cure neuropathic pain. Therefore, therapeutic goals must be realistically discussed to improve patient compliance. In addition, additional studies based on pathophysiological mechanisms should be conducted to improve the management of neuropathic pain.

한국 근위축성측삭경화증 등록체계의 구축과 향후 전망

손은희,김병조,김종국,배종석,백원기,서범천,성정준,안석원,조중양,홍윤호 대한임상신경생리학회 2011 Annals of Clinical Neurophysiology Vol.13 No.2

Geographical differences in the incidence of amyotrophic lateral sclerosis (ALS) have been reported, and there are still many unresolved problems. The incidence as well as epidemiologic data of ALS is not known in Korea. Web-based multicenter registry of ALS, the Korean ALS registry, was established at January, 2011. The aim of “the Korean ALS registry”is the following: (1) to establish a database for the prospective collection of epidemiological information; (2) to assess the incidence and prevalence; (3) to find the temporal and geographic trends in the disease; (4) to define the full clinical spectrum of the disease; (5) to develop treatment guideline based on the database.

[문화쌀롱] 문화목회란 무엇인가

손은희 새가정사 2021 새가정 Vol.739 No.-

신경병통증의 임상 척도

손은희,김병준 대한신경과학회 2021 대한신경과학회지 Vol.39 No.-

Neuropathic pain caused by a lesion or disease of the somatosensory nervous system is underdiagnosed and difficult to treat. Questionnaires based on self-reported symptoms have improved diagnosis and management of neuropathic pain. Visual analog scale and numeric rating scale are most well-known unidimensional pain questionnaires. Multidimensional questionnaire or specialized questionnaire for neuropathic pain are more useful to diagnose neuropathic pain. Screening questionnaires help to identify neuropathic pain easily, and assessment questionnaires make it possible to create phenotypic profiles of neuropathic pain and determine an efficacy of management.

"청소년 종교교육의 어제와 오늘

손은희 광주가톨릭대학교 신학연구소 2007 神學展望 Vol.- No.159

Technological Catching-up and Latecomer Strategy: A Case Study of the Asian Shipbuilding Industry

손은희,장성용,송재용 서울대학교 경영연구소 2009 Seoul Journal of Business Vol.15 No.2

This paper investigates the role of imitation and innovation in technological catching-up. On the one hand, excessive innovation and no imitation can never provide latecomers with absorptive capacity to embark on catching-up along the existing technological trajectory. On the other hand, excessive imitation and no innovation can debilitate the ability of latecomer firms to leapfrog incumbents by creating a new trajectory and further reducing the technological gap. Thus, we argue that successful technological catching-up in the long term can hardly be achieved without a fine balance between imitation and innovation at the early stage of catching-up. We also propose that occurrence of technological uncertainty at the later stage of catching-up allows latecomers with such balance to realize radical technological leapfrogging. By conducting a case study on the shipbuilding industry in the 20th century, we find supporting evidence that validates our argument.

독사 교상 후 발생한 양안의 동안신경 마비

손은희,최수영,김대현,김제,김재문,이애영 대한신경과학회 2007 대한신경과학회지 Vol.25 No.3

아크릴계 골시멘트를 위한 폴리(메틸 메타크릴레이트)입자의 제조및 특성분석

손은희,임진숙,이성재,황성주,이은창,김승수 한국생체재료학회 2005 생체재료학회지 Vol.9 No.3

Poly(methyl methacrylate) (PMMA) beads were prepared using a suspension polymerization method for applying acrylic bone cements. The changes in th shape and size of the polymer beads due to the preparation conditions such as suspending stabilizers, stirring speed, concentration of poly(vinyl pyrrollidone) (PVP) as a suspension stabilizer, and addition of styrene and PMMA, etc. were observed by scanning electron microscopy and particle size analysis. The effect of bead size and molecular weights of PMMA beads to the mechanical properties of bone cements was characterized. The PMMA beads prepared with PVP were more uniform and less aggregated than those prepared with poly(vinyl alcohol)(PVA). The size of the polymer beads was decreased by increasing the stirring speed. The bead size was decreased with increasing the degree of polymerization and the concentration of PVP molecules. The bead size was slightly reduced by adding of styrene to the MMA solution. The incorporation of PMMA into monomer portion enlarged the bead size. The tensile and compressive properties of bone cements were enhanced by increasing the average size of PMMA beads but were deteriorated by increasing the molecular weight of PMMA