Development of a Mobile Application, "Wild Flowers of Bukhansan National Park (version 1.0)", for Identification of Plants in Bukhansan National Park

Kim, Sang-Tae,Lee, Seung-Yeon,Kim, Seung-Chul,Byun, Hye-Won,Lee, Sang-Tae,Kim, Mu-Yeal,Hong, Seok-Pyo,Chung, Young-Jae,Park, Ki-Ryong,Lee, Chung-Hee,Lee, Joong-Ku,Heo, Kyeong-In,Lee, Ji-Ye,Lee, Eun-Je National Science Museum of Korea 2011 Journal of Korean nature Vol.4 No.3

We developed the educational purpose mobile application, named "Wild Flowers of Bukhansan National Park (version 1.0)", aiming for easy identification of wild flowers for students and visitors in the park. When visitors find a flower or part of plant in the park, visitors can search for its name utilizing the pictures and characters provided in their own smartphone mobile devices or tablet PCs. The application provides pictures of wild flowers in the park and character-based searching system based on 12 diagnostic features (e.g., growth form, leaf arrangement, flower symmetry, petal color, petal number, sepal number, etc). We adopted the complete floristic survey of Chung and Lee (1962) and added species that we confirmed their distribution in the park during the development of this application. In summary, number of vascular plants in this park was estimated to be 428 taxa including 100 families, 280 genera, 327 species, 1 subspecies, 50 varieties, and 5 formas. We provided a total of 588 pictures representing 358 taxa and each taxon includes multiple pictures in many cases. Included identification quizzes can be an efficient educational tool as well as fun activity for students and visitors who are learning plant species in Korea. Our next step will include GPS function in the application for indicating visitor's location and for providing previously reported sites of the species that we interested in the map of the park. The future application which includes GPS function will be a valuable tool for the monitoring of rare plants, plant researches related to the climate changes, etc. We currently provide Korean iPhone version only, and English version and both of android versions will be serviced soon.

도시공원 입지특성에 따른 그린네트워크 활성화 연구 - 부산광역시 도심권을 대상으로 -

김승환,이규홍,박승범,Kim, Sung-Hwan,Lee, Gyu-Hong,Park, Sung-Bum 한국조경학회 2010 韓國造景學會誌 Vol.38 No.2

부산은 해안구릉지의 지형특성으로 인하여 공원의 입지가 이용가치가 낮은 산지 주변으로 다수의 공원이 지정되어 있으며, 지역 간의 균형적 입지 측면에서도 문제를 안고 있다. 본 연구에서는 도심생활권 내 도시공원에 대한 환경특성 분석과 더불어 주변시가지와의 상호 관계적 특성에 따라 유형을 구분하고, 그린네트워크 활성화를 위한 유형별 도시공원의 관리방안을 모색하였다. 이를 위해 내륙권역과 해안권역으로 구분하고, 녹지연계적 관점에서 결절부 녹지대에 해당하는 내륙권역의 표고 150~300m, 해안권역의 100~150m 내외의 산지 및 구릉지에 입지하는 도시공원을 분석한 결과, 시가지와 도시공원의 형태가 관입되거나, 지대(地帶)적 중첩의 영향력이 크게 나타나고 있다. 도시공원이 이루는 녹지대는 시가지의 형상과 도시기능에 의해 녹지연계의 방향성과 영향력이 결정적으로 작용하고 있다. 이러한 현황을 바탕으로 도시공원을 유형화하고, 유형별로 미조성 도시공원에 대한 이용성 증진 방안, 녹지연계를 통한 효과적인 그린네트워크 활성화방안을 검토하였다. 완사면 녹지대를 이루는 도시공원은 비교적 양호한 접근성과 뚜렷한 인식성을 지니고 있으며, 중심산지에서 연계된 녹지대가 수렴되는 도시하천과 해안지대에서의 도시기능의 활력과 개방성 확보가 그린네트워크 활성화의 중요한 요인으로 분석되었다. 또한 고지대생활권에서 녹지대에 분포하는 한정적 가용지와 배후녹지로 연계되는 주요 연결로를 중심으로 일상생활영역에서의 그린웨이를 활성화하고, 주요 도로와 도시공원의 주진입부가 교차하는 지역에 지역 커뮤니티의 거점을 형성하는 것이 그린네트워크 활성화의 주요방안으로 제시하였다. Seen topographically, Busan is a city that is coastal and hilly. In the city, most parks have been formed around mountain areas that are not so useful. They also are unbalanced in location among different regions of the city. The purpose of this study is to find how to manage urban parks towards green network promotion. For the purpose, this researcher first analyzed physical and environmental characteristics of urban parks located within the main living spheres of Busan. Then, the researcher examined interactive relations between those parks and downtown areas surrounding them to classify types of the parks. In association, the researcher classified the entire of the city into inland and coastal regions. And the researcher examined mountainous and hilly urban parks that were 150 to 300 meters above sea level in the former region and 100 to 150 meters above sea level in the latter. Findings of the study can be summarized as follows. The above examination found that parks of Busan feature physically penetrating and overlapping with downtown areas of the city. How well the green zones of Busan in form of urban park are inter-connective and influential to each other heavily depends on shapes and functions that the downtown areas of the city have. In this study, urban parks of Busan were grouped according to their types and then analyzed. Based on results of the analysis, the researcher tried to find how to increase the utility of another urban parks that are expected to be formed and how to promote so-called the green network that integrates greens. Considering findings of the study, the researcher would make the following suggestions. In case of forming an urban park in a gently sloped green zone which is easily accessible and noticeable, it's important that the park should include a stream to which another green zone is converged or, if the park is located near a costal area, contribute to promote urban functions and openness. While, in a high-altitude green zone, it's more effective to form so-called the green way that consists of some limited usable site of the zone and greens behind it and then form a hub of regional community at the intersection between the main road and main gate to the urban park, contributing to the green network promotion.

한국인 폐확산능 정상예측식의 임상적 유용성과 정확성

나승원 ( Seung Won Ra ),박태선 ( Tai Sun Park ),홍윤기 ( Yoon Ki Hong ),홍상범 ( Sang Bum Hong ),심태선 ( Tae Sun Shim ),임채만 ( Chae Man Lim ),이상도 ( Sang Do Lee ),고윤석 ( Youn Suck Koh ),김우성 ( Woo Sung Kim ),김동순 ( Dong 대한결핵 및 호흡기학회 2008 Tuberculosis and Respiratory Diseases Vol.64 No.2

연구배경: 폐확산능을 해석하는 데 필요한 정상예측식으로는 한국인을 대상으로 하여 박 등이 개발한 식(박 식)이 있으나 아직 외국 정상예측식을 많이 사용하고 있다. 이에 국내에서 많이 사용하는 외국 정상예측식인 Burrows 식과 박 식의 임상적 유용성과 정확성을 비교하고자 하였다. 방법: 1. 임상적 유용성 연구; 2006년 7월부터 12월까지 6개월간 폐확산능검사를 시행한 환자 중 두 식을 각각 정상예측식으로 적용하였을 때 폐확산능 해석이 다른 276명(대상군 A)을 대상으로 하였다. 대상군 A에게 두 식을 각각 적용하였을 때 폐확산능 해석과 임상적 판단과의 일치도를 비교하여 임상적 유용성을 평가하였다. 2. 간질성폐질환 진단의 정확성 비교; 2001년부터 2006년까지 폐조직검사를 시행하여 확진된 간질성폐질환군과 서울아산병원에서 모집한 정상군을 대상으로 하여 정상예측식으로 두 식을 각각 적용하였을 때 폐확산능 해석의 정확도를 비교하였고, 두 식이 차이가 나는지 맥니머의 카이스퀘어 검정을 하였다. 결과: 1. 임상적 판단과의 일치도 비교; 276명을 임상정보를 토대로 폐확산능을 예측하여 분류한 결과 정상 54명, 감소 220명, 불분명이 2명이었다. 예측식으로 박 식과 Burrows 식을 적용하였을 때 임상적 판단과 일치하는 환자는 각각 78%와 22%이었다(p<0.001). 2. 간질성폐질환 진단의 정확성 비교; 박 식은 민감도 90.1%, 특이도 100%이었고 Burrows 식은 민감도 64.2%, 특이도 100%로 민감도가 통계학적으로 유의하게 박 식이 높았다(p<0.001). 결론: 우리나라 정상예측식인 박 식이 외국 정상예측식인 Burrows 식을 정상예측식으로 적용하는 것보다 임상적 유용성이나 간질성폐질환 진단의 민감도에서 더 우월하였다. 향후 폐확산능검사의 정상예측식으로 박 식을 사용해야 할 것으로 사료된다. Background: Park et al. developed the Korean reference equation for the measurement of diffusing capacity in 1985. However, the equation has not been widely used in Korea and foreign reference equations have been popularly used. We intended to compare the clinical usefulness and the accuracy of the the Korean reference equation (Park`s equation) with that of the foreign equation (Burrows` equation) that is commonly used in Korea. Methods: 1. Evaluation of clinical usefulness; Among 1,584 patients who underwent diffusing capacity (DLCO) at the Asan Medical Center from July to December 2006, group A subjects included 276 patients who had different interpretations of DLCO in trials employing Burrows` equation and Park`s equation. Clinical assessment was decided by consensus of two respiratory physicians. In order to evaluate the clinical usefulness of Burrows` equation and Park`s equation, agreement of clinical assessment and DLCO interpretation were measured. 2. Evaluation of accuracy; Group B subjects were 81 patients with interstitial lung disease (ILD) and 39 normal subjects. The 81 ILD patients were diagnosed following a surgical lung biopsy. The accuracy of diagnosing ILD as well as sensitivity and specificity were evaluated according to the use of the reference equations (Burrows` equation and Park`s equation) for DLCO. Results: Agreement between clinical assessment and interpretation of DLCO was 22% for the use of Burrows` equation and 78% for the use of Park`s equation. The sensitivity and specificity of the Burrows` equation for diagnosing ILD were 64.2% and 100%. The sensitivity and specificity of the Park`s equation for diagnosing ILD were 90.1% and 100%. The sensitivity of the Park`s equation for diagnosing ILD was significantly higher than that of Burrows` equation (p<0.001). Conclusion: The Korean reference equation (Park`s equation) was more clinically useful and had higher sensitivity for diagnosing ILD than the foreign reference equation (Burrows` equation). (Tuberc Respir Dis 2008;64:80-86)

한국 국립공원 산림생태계의 수목 탄소저장량 평가

이상진,박홍철,박관수,김현숙,이창민,김진원,심규원,최승운,Lee, Sang-Jin,Park, Hong-Chul,Park, Gwan-Soo,Kim, Hyoun-Sook,Lee, Chang-Min,Kim, Jin-Won,Sim, Gyu-Won,Choi, Seung-Woon 한국환경복원기술학회 2022 한국환경복원기술학회지 Vol.25 No.3

The purpose of this study is to quantitatively evaluate the amount of carbon storage for trees in forest ecosystem to support the foundation for carbon neutrality implementation in Korea National Park. It targeted 22 national parks designated and managed as national parks in Korea, and conducted research on forest trees in the terrestrial ecosystem among various natural and ecological carbon sink. The survey and analysis method followed the IPCC guidelines and the National Greenhouse Gas Inventory in Korea. The amount of tree carbon storage in the forest ecosystem of Korea National Park was confirmed to be about 218,505 thousand CO₂-ton and the amount of carbon storage per unit area was 570.8 CO₂-ton per hectare. Compared to 299.7 CO₂-ton per hectare, the average carbon storage per unit area of the entire Korean forest, it was found that about twice as much carbon was stored when assuming the same area. In other words, it means that the tree carbon storage function of the national park is about twice as high as that of the average tree carbon storage function of entire Korean forest. It has great implications in Korea National Park not only provides biodiversity promotion and exploration services as a national protected area, but also performs excellent functions as a carbon sink.

UPS Applying Big Data Analytics to Logistics:

Sung-Hee “Sunny” Park,Do-Hong Kim 한국경영정보학회 2014 한국경영정보학회 학술대회논문집 Vol.2014 No.1

Managing big data has become increasingly important to businesses as big data analytics can transform big data into insightful information. But, not many companies utilize it efficiently and effectively. While many companies in the transportation industry are facing many challenges with big data, United Parcel Service (UPS) is successfully applying big data analytics to logistics. UPS’s proprietary routing software, called ORION (On-Road Integrated Optimization and Navigation), uses package-level detail and customized online map data to provide drivers with optimized routing information. In 2013, ORION resulted in reductions of more than 1.5 million gallons of fuel and 14,000 metric tons of CO2 emissions. This paper discusses UPS’s innovative path to optimization from data gathering to visualization.

Interaction of <i>Veratrum nigrum</i> with <i>Panax ginseng</i> against Obesity: A Sang-ban Relationship

Park, Jinbong,Jeon, Yong-Deok,Kim, Hye-Lin,Lim, Hara,Jung, Yunu,Youn, Dong-Hyun,Jeong, Mi-Young,Kim, Hyun-Ju,Kim, Sung-Hoon,Kim, Su-Jin,Hong, Seung-Heon,Um, Jae-Young Hindawi Publishing Corporation 2013 Evidence-based Complementary and Alternative Medic Vol.2013 No.-

<P>Obesity has become a major health threat in developed countries. However, current medications for obesity are limited because of their adverse effects. Interest in natural products for the treatment of obesity is thus rapidly growing. Korean Medicine (KM) is characterized by the wide use of herbal formulas. However, the combination rule of herbal formulas in KM lacks experimental evidence. According to <I>Shennong's Classic of Materia Medica</I>, the earliest book of herbal medicine, <I>Veratrum nigrum</I> (VN) has antagonistic features against <I>Panax ginseng</I> (PG), and the PG-VN pair is strictly forbidden. In this study, we have shown the effects of PG, VN, and their combination on obesity in high-fat (HF) diet-induced obese mice and in 3T3-L1 cells. PG, VN, and PG-VN combination significantly reduced weight gain and the fat pad weight in HF diet-induced obese mice. They also significantly decreased lipid accumulation and the expressions of two major adipogenesis factors, PPAR<I><I>γ</I></I> and C/EBP<I><I>α</I></I>, in 3T3-L1 cells. In addition, the PG-VN combination had synergistic effects compared with the mixture of extracts of PG and VN on inhibition of PPAR<I><I>γ</I></I> and C/EBP<I><I>α</I></I> expressions at lower doses. These results indicate a new potential anti-obese pharmacotherapy and also provide scientific evidence supporting the usage of herbal combinations instead of mixtures in KM.</P>

정보이론 기반 한국어 준말의 분석

홍성훈 ( Sung Hoon Hong ),박선우 ( Sunwoo Park ) 경희대학교 언어연구소 2016 언어연구 Vol.33 No.2

In casual speech of Korean, words are often reduced to shorter forms by reducing one or more syllables from the original words. This word reduction comes in three types: simple deletion of one or more syllables from the source word, reduction motivated by hiatus avoidance, and reduction created by deletion of subsyllabic segment(s) with subsequent resyllabification. The third type, which we call "subsyllabic reduction (SSR)," is particularly interesting because it is not clear what motivates this specific deletion of segment strings and the subsequent phonological restructuring. This paper examines the issues surrounding SSR from the perspective of information theory (Shannon 1948) and proposes that SSR occurs to improve string well-formedness and collocational strength between segments, which are measured respectively by information-theoretic notions of ``positive logarithm`` (plog; Goldsmith 2002, 2011) and ``mutual information``. To elaborate this proposal, we compiled a list of reduced words created by SSR and examined how plog and mutual information vary with SSR. We obtained a partially positive result: Among the five types of SSR, the values of plog and mutual information change as we expected in three types, which account for 270 out of 309 cases of SSR. We suggested a tentative explanation for the remaining cases based on reverse derivation and word-edge effect. (Aitchison 2011). (Hankuk University of Foreign Studies · Keimyung University)

Earnings Management and CEO Turnover in Korean Credit Unions

Sang-Choon Park(박상춘),Wan Suk Ko(고완석),Yong-Sik Hong(홍용식) 한국국제회계학회 2018 국제회계연구 Vol.0 No.79

본 연구는 신용협동조합(신협)이 대손충당금설정액의 재량적 조정에 의하여 이익조정을 행하고 있는가를 실증적으로 검증하였다. 본 연구는 신협의 특유한 측면을 살펴 검증하였다. 먼저, 신용협동조합의 설립기반인 조합원의 특별한 관계, 즉 공동유대(지역․단체․직장)와 관련하여, 본 연구는 공동유대 유형에 따라 이익조정이 달라지는지 살펴보았다. 다음, 신용협동조합의 최고경영진 및 그 임기 횟수는 매 4년마다 조합원 직접선거에 의해 결정되므로, 이러한 선거가 이익조정 유인에 어떤 영향을 미치는지 검증하였다. 본 연구의 연구방법으로 금융회사의 이익조정관련 선행연구에서 많이 쓰이는 개별발생액접근법을 이용하였는데, 경영자의 재량성이 큰 기말대손충당금설정액(대손상각비)을 종속변수로, 비재량적이익을 주요 설명변수로 두고, 대손충당금을 조정하여 이익조정하는지 여부를 검증하였다. 분석을 위한 표본은 2015년 말 정상 영업 중인 지역조합 및 단체조합을 대상으로 2006년부터 2015년까지 10년 동안 7,445개 신협-연도 자료를 이용하였다. 실증분석 결과, 신용협동조합의 경영자들은 재량성이 큰 대손상각비를 이용하여 이익조정을 행하고 있음이 발견되었는데, 이사장은 초임기간(4년) 중 다음 선거를 의식하여 연임 기간(4년)에 비해, 그리고 초임기간 중 마지막 연도는 초임 또는 연임기간의 다른 연도에 비해, 이익조정을 더 크게 하는 것으로 검증되었다. 그리고 지역조합이 단체조합보다 이익조정을 더 활발하게 행하는 것으로 나타났다. 위와 같은 신협 경영자의 이익조정의 증거를 바탕으로, 본 연구는 다음의 시사점을 제공하고 있다. 금융당국은 경영자의 이익조정 재량권을 축소하기 위해 자산건전성 분류기준 및 회수예상가액 산정기준을 보다 명확하고 객관화하여 개선하여야 한다. 아울러 조합의 규모나 공동유대 특성 등을 고려한 차등 감독도 시행할 필요가 있다. This study empirically tests whether and how CEOs of credit unions manage their reported earnings through management of allowance for bad debts (ABD) by examining distinct features of credit unions. With regard to the common ties of their members on which the unions are established, it tests whether credit unions’ earnings management differs by type of establishment ties. Then, because the CEOs of unions and their number of terms of office are determined by the direct election by their members, the study examines how earnings management is affected by the existence of the election. The study uses a specific accruals approach widely used in the literature on earnings management of financial companies. It uses bad debt expense (BDE), a major discretionary item, as the dependent variable and non-discretionary earnings as a primary explanatory variable to test the hypotheses. The sample comprises 7,445 Korean credit union firm-years spanning 2006 to 2015. The empirical results revealed that credit unions manage their reported earnings by using BDE, especially more in the first office term of their CEOs than in the consecutive term, and in the last year of the first term, and that earnings were more actively managed in regional unions than in association ones. This study provides policy implications. Financial supervisory authorities should improve the objectivity and clarity of asset soundness criteria, and provide better and objective estimation methods for expected loan recovery so as to minimize CEOs’ discretion in earnings management. They should also provide differential supervision for credit unions depending on their types of common ties and size.

Effects of Pilger Rolling and Heat Treatment on Microstructure and Corrosion Resistance of Ag-electroplated 304 Stainless Steel Tubes

Hyun Park,Woo‑Jin Lee,Jae‑Han Son,Han‑Kyun Shin,Sung‑Kyu Hong,Hyo‑Jong Lee 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.8

We introduce a cost-effective method that combines electroplating with metal cold working processes to manufacture compositetubes with robust corrosion resistance. First, a 3-step electroplating process was developed to form an adhesive anduniform Ag coating on the outer wall of a 304 stainless steel tube. The process consisted of a Ni-strike step for removing thepassivation layer of the initial 304 tube, Cu deposition for smoothing the surface by adding a buffer layer, and Ag deposition. To reinforce the interfacial adhesion between the electroplated layers and the 304 tube and increase the area of the Ag coating,a pilger rolling or pilger rolling + heat-treatment process was performed after the Ag electroplating process. Scanningelectron microscopy of the composite tubes after each process indicated that the as-deposited Ag coating changed fromhaving a rough to smooth surface after only pilger rolling and with additional heat treatment. Electron backscatter diffractionanalysis of the microstructures and textures of the tubes revealed that dynamic recrystallization occurred extensively duringpilger rolling, resulting in the formation of a relatively defect-free grain structure without heat treatment. Furthermore,electrochemical polarization curves determined that the Ag-coated composite tubes are superior to the uncoated 304 tubein terms of corrosion resistance under Cl−atmosphere, owing to the formation of a AgCl passivation layer during testing. Surface analysis of the composite tubes suggests that the properties of the AgCl passivation layer are related to the grainsize of the Ag coating and the density of plastic-deformation-induced defects.

논문 : 국립공원 탐방로 내 위험 급경사지 유지관리 방안 연구

김홍균 ( Hong Gyun Kim ),김태호 ( Tae Ho Kim ),김재학 ( Jae Hak Kim ),곽재환 ( Jae Hwan Kwak ),박성욱 ( Sung Wook Park ),최수원 ( Soo Won Choi ),송영갑 ( Young Karb Song ) 대한지질공학회 2016 지질공학 Vol.26 No.1

국립공원은 주로 산악 지형 내 조성되어 있으므로 산사태에 의한 피해 가능성을 항상 내포하고 있다. 본 연구는 산사태 연구의 일환으로 국립공원 탐방로 내 위험 급경사지를 체계적으로 유지관리하기 위한 방안을 마련하는데 목적이 있다. 국립공원에 특화된 자체 체크리스트를 제작하였으며, 전국 19개 국립공원 183개소 급경사지에 대한 실태조사가 이루어졌다. 실태조사의 최종 목적은 위험 급경사지에 대한 안정화 대책을 마련하는 것으로 현장조사와 안정해석의 과정을 거친다. 일부 급경사지에서는 위험성 판단을 위해 지상라이다 등 특수 장비를 이용한 조사를 시도하였다. 중장기 정비계획을 위한 투자우선순위 공식을 개발하였으며, 현장자료를 이용한 순위 및 위험등급을 산출하였다. 최종적으로 위험 급경사지의 향후 체계적인 관리를 위해 “국립공원 급경사지 유지관리시스템”을 개발하였으며, 모든 현장자료들은 시스템 내 DB화 되었다. National parks, which are located mainly in mountainous areas, are always at risk of damage by landslides. The goal of this study is to establish a method for systematically maintaining hazardous steep slopes along trails in national parks. We produced a checklist suitable for each of the 19 national parks nationwide and investigated 183 slopes. The aim of these investigations is to recommend appropriate slope-stability countermeasures, including field investigations and stability analysis. We made preliminary investigations at specific sites, evaluating the slope hazard using specialized equipment such as terrestrial LiDAR. An investment priority formula was developed, and ranking and hazardous grades were calculated as part of a long-term maintenance plan. Finally, to systematically manage dangerous slopes and to house all the field data within one system, we developed the “Slope Maintenance System in National Parks” based on web server that can show various information for slopes.