Investigation of the April 2000 forest fire damage in Kang-won Province, Korea, using RADARSAT data

Kang, Sung Chul,Seo, Jin Won,Lee, Tae Hee,Park, Sang Eun,Hong, Suk Young,Moon, Wooil M. 대한원격탐사학회 2000 International Symposium on Remote Sensing Vol.16 No.1

The series of forest Fires in Kangwon Province in April, 2000, were one of the mast serious ones in the Kang-won Province in recent years. The fire damaged areas are extensive and this paper investigates the utility of the satellite image data, particularly the RADARSAT SAR data. One of the main objectives of this study included evaluation of potential usefulness of the C-band RADARSAT data in the detection of forest fires in mountainous areas. Among several fire damaged sites, the area near Samchuk (city) was selected as the main study area and mufti-temporal RADARSAT(raw) data were acquired and the processed results were comparatively investigated with the IRS-1c data acquired shortly after the fire. To identify the burnt area from the undamaged background in the optical imagery, supervised classification and NDVI processing were carried out and tested with the IRS-1C data. For this experiment, several sets of raw RADARSAT standard and Fine mode (S4, F3, ascending orbit) data were processed and the final image was formed. In addition to the final image, sigma nought (σ°) was catnputed and compared for the burnt area against the undamaged areas. Because of the steep slopes in the study area and subsequent deviation from the flat surface scattering models, the fire scars in the sigma nought (σ°) image were not apparent. However, fire scars are slightly detected in the difference and ratio images obtained from the signal intensity data acquired at different dates (bath before and after fire). Texture analysis of the image data including the burnt areas were carried out using the Multiplicative Markov Random-Field (MMRF) algorithm. The detection of the fire damaged area from both standard mode and fine mode RADARSAT was not as straightforward as in optical data. However, Previous studies with ERS-1 S_AR and RADARSAT data in Indonesia and in the North American Plains indicate that C-band SAR data provide us with an effective tool for studying the forest fire damages. However, the application of C-band SAR data to the analysis of the forest fire areas requires careful processing of the data with realistic scattering models.

Landscape Ecological Study on the Habitats of Three Thalictrum Plants and its Distribution

Kang,Shin-Ho,Ko,Sung-Chul 한국자원식물학회 2004 Plant Resources Vol.7 No.1

The purposes of this study were to clarify of floristic composition and the landscape structure on the habitats of three Thalictrum plants, which were distributed in Daejeon, Korea. Floristic composition of habitats was organized by living in flatten open space needed a lot of sunlight and humidity. Landscape ecological structure of habitats was defined by soils of loamy skeletal mesic, slope between 25 to 30˚ Vegetation rating was 75 percent of woody coverage at less than 450 m above the sea levels, respectively. Distribution patterns of Thalictrum plants in Daejeon were presented on the 1 km X 1 km grid map.

Landscape Ecological Study on the Habitats of Genus Ranunculus Plants and its Distribution

Kang,Shin-Ho,Ko,Sung-Chul 한국자원식물학회 2002 Plant Resources Vol.5 No.1

The purposes of this study were to clarify of floristic composition and the landscape structure on the habitats of each Ranunculus plant, which were distributed in Daejeon, Korea. Three taxa were distributed and investigated in this study. Floristic composition of habitats were organized by living in flatten open space needed a lot of sunlight and humidity species. Landscape ecological structure of habitats were defined by soils of coarse loamy and loamy skeletal, slope of under 15$^{\circ}$ 수식 이미지, under the (five percent of woody coverage at 100-300m above the sea levels. Distribution patterns of Ranunculus plants in Daejeon were presented on the 1km X 1km grid map.

干拓地 除鹽에 關한 硏究

姜信業,姜乂默,金顯喆 충남대학교 대학원 원우회 1969 논문집 Vol.2 No.-

The project of desalinization in the new reclaimed land should be executed above all, because the damage of salinity in the paddy fields is due to the excess of salinity. Open ditch one of the most important methods of desalinization for expulsion of salinity by the irrigation water as well as decreasing the ground Water contained salinity. In this research, the effects of open ditch and of desalinization by irrigation water during the period of paddy plants growing, and changes of saline content in reclaimed land which is located in Kang-Hwa-Goon, Kyung-Ki-Do, were investigated. The results obtained in this research are summarized as follows: 1. The depth of saline expulsion by supplying of irrigation water was approximately 30cm to 50cm under the ground surface, but saline expulsion was hardly done in case of the depth which is deeper than the above mentioned, because the moisture and saline content hardly change in such a condition. 2. Infiltration speed of the Horizontal drainage was more rapid than that of vertical drainage in soil of Kang-Hwa reclaimed land. 3. In open ditch, we could make a good condition for the growth of rice plants, because the desalinization was not only rapid but also effective up to the subsoil layer. 4. The reasonable interval of open ditch was about 18m, and we could set limits approximately 30cm to 90cm in the depth of open ditch. 5. Saline changes of the soil in the reclaimed land was sensitive to weather condition and discharge of irrigation water, and changes of the monthly saline content was extreme in case of drying seasons and non-supplying of irrigation water, and saline content of surface layer seemed to be higher than that of subsoil. 6. The saline content of soil and the rate of disalinization showed a tendency to decrease according to cultivating years of rice plants. Rice plants was not nipped by salinity after 3 years cultivating in the conditin of open ditch by 18m iterval on the new reclaimed land.

Flora of Mt. Woosanbong, Korea

Kang,Shin-Ho,Lee,Young-Sim,Ko,Sung-Chul 한국자원식물학회 2003 Plant Resources Vol.6 No.1

This study was performed to investigate the flora and plant resources of Mt. Woosanbong (537.8 m) from April to October 2002. The collected vascular plants were composed of all 389 taxa including cultivated species, and classified into 329 species, 2 subspecies, 53 varieties, and 5 forms of 248 genera under 81 families. Six taxa of the Korean endemic plants and 4 taxa of the rare and endangered plants were also distributed in this mount. Resource plants were categorized into edible 181, pasturing 160, medicinal 136, stainable 94, ornamental 77, timber 22, fiber 5 and industrial 4 taxa, respectively. Floristic geography of the investigated area was regarded as the boundary between middle and southern parts in floristic pattern of the Korean Peninsula.

이익기준점의 미달과 공시지연

강내철(Kang Nae-Chul),정래용(Chung Rae-Yong) 한국국제회계학회 2017 국제회계연구 Vol.0 No.71

본 연구는 어떤 기업은 다른 기업보다 실적을 빨리(또는 늦게) 공시하는지를 규명한다. 구체적으로 실적공시의 적시성에 영향을 미치는 중요한 요인으로 이익뉴스의 성격에 주목하고, 악재를 가진 기업은 상대적으로 늦게 공시할 것이란 예측을 확인한다. 실적이 세 가지 기준점(0의 이익, 전년도의 이익, 재무분석가의 예측치)에 미달하는 경우를 악재로 정의하고, 분기실적이 이러한 세 가지 기준점에 미달하는 경우에는 실적공시가 지연될 것으로 예측한다. 이 분석에는 2011년부터 2015년까지의 기간 중에 공정공시나 수시공시로 분기실적을 공시한 기업들의 분기실적 자료-총 5,289건의 기업·분기-가 사용되었다. 분석결과 분기실적이 악재일 경우에는 공시지연이 생길 것이란 예측대로 분기실적이 적자인 경우, 전년 동기보다 악화된 경우 또는 재무분석가의 이익예측치에 미달하는 경우에는 보고시차가 유의하게 크다는 점을 확인할 수 있었다. 이것은 악재보고로 인한 투자자들의 비난을 회피하기 위해 경영자는 이익공시를 지연한다는 것을 의미한다. 이러한 결과는 호재는 조기에, 악재는 지연 공시됨을 확인한 기존연구들의 주장을 뒷받침한다. 그 밖에 다음과 같은 사실들이 확인되었다. 첫째, 투자자들의 공시압박이 클수록-주식의 거래규모가 클수록, 외국인투자자의 지분율이 높을수록-공시지연이 작은 것으로 확인되었다. 둘째, 소송위험이 높은 기업-기술집약형 기업이거나 사외이사비율이 높은 기업-은 공시지연이 작은 것으로 나타났다. 그 밖에 대규모 기업은 공시지연이 작은 반면, 정보비대칭도가 높은 기업은 공시지연이 큰 것으로 확인되었다. This study discuss a different timeliness in earnings announcements among firms from various industry. We investigate a reason why some firms announce their earnings performance earlier(later) than other firms. We focuss on the nature of earnings news as key determinant of timeliness of earnings announcement, and investigate whether firms with bad news are announce the earnings news relatively late. We define the bad news as firms report quarterly earnings number which miss the three thresholds (zero earnings, previous year"s earings, earnings forecasts). When the quarterly earnings number miss three threshold, we expect that quarterly earnings announcement would be delayed. We used quarterly data of firms that announce the quarterly earnings numbers either by voluntary or non voluntary from 2011 till 2015. According to a results, We could found facts that earnings announcements are significantly delayed when the quarterly earnings are negative, lower than previous year or lower than financial analysts" forecasts. This means that managers tried to avoid criticism from investors by delaying reporting bad news. This results support a good news early, bad news late hypothesis suggested by prior research (Givoly and Palmon, 1982; Chambers and Penman, 1984; Kross and Schroeder, 1984; Begley and Fischer, 1998; Bagnoli et al., 2002). In addition, We found the facts followings. First, firms that suffer a large pressure from the investors(larger trading volume, larger share ratio of foreign investors) has shorter reporting lag. Second, firms that has a large litigation risk(larger ratio of the outside director or technology incentive firm) has shorter reporting lag. Lastly, we found that the reporting lag of large firm is short, while that of high information asymmetry firm is long.

절제된 위암의 병리학적 분류

강구,신형식,이민철,박영의,김주섭,박철재,배수동 대한병리학회 1992 Journal of Pathology and Translational Medicine Vol.26 No.1

대장 및 직장의 침윤성 선암종에서 AgNORs수와 환자의 생존율과의 관계

강구,남은숙,신형식,김순란,박영의,이재정,박철재,이민철 대한대장항문학회 1997 Annals of Coloproctolgy Vol.13 No.1

조선업 근로자의 목부위 자각증상의 유병률과 관련 요인

박종,김기순,강명근,류소연,이철갑,강성득,김철호 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.1

Background and Objectives : This study examined prevalence and related factors of musculoskeletal symptoms on area of necks of shipbuilding workers in order to prevent musculoskeletal disorder and find out its managerial plans. Materials and Methods : this study targeted 1, 159 male shipbuilding workers who work for large suipbuilding companies, and interviewed them using organized questionnaire having short answer questions in February, 2003. Results: The prevalence of musculoskeletal symptoms (pains, anesthesia, and numbness) of the subjects was 16.0% on necks. As a result of multiple logistic regression analysis, the following results were obtained : sleeping hours, working departments, extra working hours, perceived amount of working, availability of dispensary were significantly related with symptoms on neck. When the variables that had significant relation with prevalence of neck area symptoms were analysed health behavior, it was found that the odds ratio of the group who had more than sufficient sleeping hours was 1.70 times higher than that of the group who had not. When they were examined in terms of occupational characteristics, the odds ratio of the subcontract company workers was 0.44 times lower than that of the parent company workers, and that of the group who had two hours of extra working hours was 1.78 times higher than that of the group who did not. The odds ratio of the group who thought the perceived working amount was slightly over the proper level was 1.49 time higher, and that of the group who thought it was excessively over the proper level was 3.21 times significantly higher. The odds ratio of the group who thought availability of dispensary was moderate was 1.84 times significantly higher than that of the group who thought it was easy. Conclusion : It was found that 16.0% of shipbuilding workers had musculoskeletal symptoms on neck, and their deom-sociological, occupational, and socio-psychological characteristics affected the symptoms. Therefore, to decrease musculoskeletal symptoms of shipbuilding workers, wording and socio-psychological condition should be improved by considering related factors of the workers.

한국인 직무 스트레스 측정도구의 개발 및 표준화

장세진,고상백,강동묵,김성아,강명근,이철갑,정진주,조정진,손미아,채창호,김정원,김정일,김형수,노상철,박재범,우종민,김수영,김정연,하미나,박정선,이경용,김형렬,공정옥,김인아,김정수,박준호,현숙정,손동국 大韓産業醫學會 2005 대한직업환경의학회지 Vol.17 No.4

Background and Purposes: Over the past three decades, numerous studies performed in Korea have reported that job stress is a determinant risk factor for chronic diseases and work disability. Every society has its own culture and occupational climate particular to their organizations, and hence experiences different occupational stress. An occupational stress measurement tool therefore needs to be developed to estimate it objectively. The purpose of this study is to develop and standardize the Korean Occupational Stress Scale (KOSS) which is considered to be unique and specific occupational stressors in Korean employees. Subjects and Methods: Data were obtained from the National Study for Development and Standardization of Occupational Stress (NSDSOS Project: 2002-2004). A total of 12,631 employees from a nationwide sample proportional to the Korean Standard Industrial Classification and the Korean Standard Occupational Classification were administered. The KOSS was developed for 2 years (2002-2004). In the first year, we collected 255 items from the most popular job stress measurement tools such as JCQ, ERI, NIOSH and OSI, and 44 items derived from the a qualitative study (depth interview). Forty-three items of KOSS, in the second year, were retained for use in the final version of the KOSS by using Delphi and factor analysis. Items were scored using conventional 1-2-3-4 Likert scores for the response categories. Results: We developed eight subscales by using factor analysis and validation process: physical environment (3 items), job demand (8 items), insufficient job control (5 items), interpersonal conflict (4 items), job insecurity (6 items), organizational system (7 items), lack of reward (6 items), and occupational climate (4 items). Together they explained 50.0% of total variance. Internal consistency alpha scores were ranged from 0.51 to 0.82. Twenty-four items of the short form of the KOSS (KOSS-SF) were also developed to estimate job stress in the work setting. Because the levels of the subscales of occupational stress were gender dependent, gender-specific standard norms for both the 43-item full version and the 24-item short form using a quartile for the subscales of KOSS were presented. Conclusion: The results of this study suggest that KOSS might be an appropriate measurement scale to estimate occupational stress of Korean employees. Further and more detailed study needs to be conducted to improve the validity of this scale.