우리나라 조림기술로 인니 쓰나미 상처 치료했어요 - 산림청, 2년여에 걸쳐 인니 쓰나미 피해지 망그로브 숲 복원 완료

김종연,Kim, Jong-Yeon 한국산림경영인협회 2008 山林經營 Vol.190 No.-

미호천 퇴적층의 매몰연대에 대한 연구: 정북동 토성과 범람원의 물질을 대상으로

김종연 ( Jong Yeon Kim ),성정용 ( Jeong Yong Seong ) 한국지리학회 2016 한국지리학회지 Vol.5 No.2

Depositional environment changes of drainage basin of Geum River during Pleistocene and Holocene have been studied by some researchers. Previous studies classified fluvial terraces along the channel of Miho river by the relative height from the current river channel. The lower terraces of this area supposed to be formed after the last glacial maximum. However, the burial age of fluvial sediments of Miho river have not estimated using numerical method. Samples for age estimation were collected from the Jeongbuk earth wall and adjacent area. The Jeongbuk earth wall is supposed to be constructed on the natural levee of Miho river. Sand layer forms the basis of fluvial depositional layers of the study area. The fluvial gravel layer, can be found from the channel bed, overlain the basal sand layer and are covered by upper sand and finer particle layer. The burial age of upper sand layer and finer particle layer are estimated as 13.65±2.04ka BP and 4ka BP respectively. At the south-east part of the wall three burial ages are estimated from samples of the lowest part (sand; 9ka), middle part (finer particles; 6ka) and the upper part (sandy: 9ka). The soil wedges are found from clay layer at the bottom of south part of the wall and adjacent floodplain area. The burial age of these layer estimated as 17~12ka BP and it is the time global warming after the last glacial maximum. It was reported that precipitation of that period also increased.

충청북도의 하천 지형 연구에 대한 고찰

김종연 ( Jong Yeon Kim ) 한국지리학회 2016 한국지리학회지 Vol.5 No.1

Previous studies on fluvial landforms in Chungcheongbukdo (Province) are reviewed in this study. Various micro-forms, like pothole and grooves, are found from channel bed of mountain streams incising granite area of Sobaek mountain range. However only the forms at Hwayang valley area were studied. Fluvial terraces can be found from the Danyang area, mid reach of the Nanhangang (River). Lower terrace of this area are regarded as fill terrace, while upper terraces are weathered strath terrace. There are some proposed hypothesis on the age and forming processes of terraces, but further scientific analysis on the chemical composition of weathered sediment and burial ages are needed. Number of abandoned channels are formed by meander cut along the head and mid reach of Dalchen (River), a tributary of Namhangang. Information on the burial age of the sediment can contribute to the studies on the landform change of Sobaek mountain range. Abandoned palaeo-channel and terraces can be found from the Chogangcheon (River) in Yeongdonggun, southern part of Chungcheonbukdo. There are previous studies on fluvial terraces along the Mihocheon (River), the forming age and processes of terrace are reported recently.

오대천 수항 계곡의 산지 하천성 퇴적층 특성에 대한 연구

김종연 ( Jong Yeon Kim ),이상헌 ( Sang Heon Yi ),김종욱 ( Jong Wook Kim ) 한국지리학회 2012 한국지리학회지 Vol.1 No.1

The sediment particles found from depositional landforms at Suhangri, Hajinbu, Gangwon province were analyzed in this study. The samples were collected from the depositional forms located near of Odaecheon. Odaecheon is deeply dissecting the paleozoic sedimentary rocks (mainly sandstone) and formed fluvial terraces along its course. The sediment particles of depositional landforms showed different origin and transport route. The lower terraces near of current channel are formed with well rounded granite gravels while higher depositional forms at the foot of the slope are formed with sub angular - sub rounded sandstone gravels with clay matrix. In addition, the thickness of the landforms found less than 10m. So it should be pointed that overall feature of the landform is not decided by the depositional processes of stream but the surface feature formed by erosional processes. It is also found from the slope of the mountain that the gullies on the slope are the main erosional and depositional agents. The sediment particles formed by mechanical weathering or deposited by other processes are transported through the gully. The particles found from the bottom of the gully showed similar roundness and lithology with depositional forms at footslope. It means that sediment particles at the area transported from upslope by the gullying rather than upstream by the fluvial processes. So, it should be mentioned that the depositional forms at this area have different sediment link with slope or upstream reaches, though relative height form the channel is similar.

기반암의 물리 화학적 특성과 산지 풍화 지형 발달과의 관계에 대한 연구1) -강원도 삼척시 쉰움산을 사례로-

김종연 ( Kim Jong Yeon ) 한국사진지리학회 2017 한국사진지리학회지 Vol.27 No.2

There are more than 250 weathering pits at the top of the Suinumsan (mountain), located in Samcheok, Gangwon province. Previous researches have distinguished the pits according to their geometrical aspects and formation process. In this study, the landscape of the top (SU07∼SU13) and mid-slope of mountain (Su02∼06) are investigated. In order to compare the characteristics of rock strength and chemical composition affecting pit formation, XRF analysis and Schmidt hammer rebound test were adapted. In the field survey, linear depressions (groove) and circular depressions (gnamma) were found in the middle of the slope. The scale were smaller and development level were lower than those of the mountain top. Also, forming process of the circular pits were similar to the portholes. There was no difference in the rebound strength between two sites. However, there is a difference in rebound strength within each site, which seems to be related to the characteristics of horizontal and vertical cracks developed at each site. Based on this, it seems that there is no direct relationship between rebound strength and pit development. The chemical composition also showed no difference between the top and the midpoint of the slope and the chemical weathering index was not affected by weathering as a whole. The chemical composition also showed a difference in each point. The correlation between rock strength and chemical composition was investigated. There was a direct correlation between the two variables, but there was statistically significant correlation between the content of Si and the content of Al. However, there was no significant correlation with CIA. These results should be reviewed together with the validity of the relevant indicators through further studies in the future.

양구 수입천 단구의 빙기 퇴적물의 특성에 대한 연구

김종연 ( Jong Yeon Kim ),신원정 ( Won Jeong Shin ) 한국지리학회 2014 한국지리학회지 Vol.3 No.1

There are some previous studies on the sedimentary deposits of glacial period in Korea. Most of these deposits are identified as loess or loess like aeolian deposits based on physical characteristics, while chemical composition of these deposits caused debate on the origins and the natures. The characteristics of the fluvial terrace deposits found from Suip river, Bangsan, Yanggu-gun, Gangwon-do which the burial age of its particles belong to MIS 6, are analyzed using granulometric studies and geochemical analysis in this study. The result from XRF used to find chemical composition and weathering related indices, while XRD results are used to identify the rock foorming minerals and clay minerals. The color of the deposits showed similarity with previously reported loess lays, however these are coarser and far poorly sorted than the loess. These deposits are located at illite zone by the chemical composition and some layer affected by the post-depositional disturbance caused by additional supply of unweathered material. The quartz peaks are dominant for all samples. For the clay minerals, illite peaks are stronger than those of kaolin. It must be the effect of climatic characteristics ever since the deposition event of the area. The strong feldsapr peaks are also found and it could be the result of postdepositional disturbances.

개원의사와 개원한의사의 전문직업성, 직무스트레스 및 직업만족도

김종연,강윤식,조용기,이상원,진대구,안순기,천병렬,예민해,감신,Kim, Jong-Yeon,Kang, Yune-Sik,Cho, Yong-Kee,Lee, Sang-Won,Jin, Dae-Gu,Ahn, Soon-Gi,Chun, Byung-Yeol,Yeh, Min-Hae,Kam, Sin 대한예방의학회 2004 예방의학회지 Vol.37 No.1

Objectives : This study was conducted in order to investigate the professionalism, job stress and job satisfaction in western and oriental doctors in Korea. Methods : The authors conducted a survey using a self-administered questionnaire, conducted between August and September, 2001. The study subjects were 457 western doctors and 161 oriental doctors practicing at local clinics in Daegu City. Results : For the professionalism scale, the score for belief in service to the public of western doctors was significantly higher than that of oriental doctors (p<0.05) whereas the scores for sense of calling to the field and feeling of autonomy were higher in oriental doctors (p<0.01). For the job stress scale, the scores for work factor, and clinical responsibility/decision factor of western doctors were significantly higher than those of oriental doctors (p<0.01). Of the western doctors, 59.7% expressed satisfaction with their job as a doctor, 69.5% responded that the role of a doctor was appropriate to their aptitude, and 61.8% answered that they wouldn't consider other kinds of job even if offered. In case of oriental doctors, these responses were 83.1%, 82.5%, and 82.3%, respectively. Conclusions : The job stress scores of western doctors were higher than those of oriental doctors, but the job satisfaction was lower. The reasons for the above results are not clear. Further studies are required to understand the characteristics of job stress and job satisfaction in doctors.

추적관찰에 의한 일개 전문계 남자고등학생의 흡연 예측 인자

김종연,박순우,Kim, Jong-Yeon,Park, Soon-Woo 대한예방의학회 2009 예방의학회지 Vol.42 No.1

Objectives : This study was performed using a longitudinal approach to explore the predictors for current smoking among male high school students. Methods : Baseline data was collected in May 2004 through a self-administrated questionnaire completed by 607 male students in a technical high school in Daegu city, Korea. Subsequently, their smoking behaviors were followed one year after. Among the 544 followed participants, data for 439 non-smokers in the first year was used in longitudinal analysis. Current smokers were defined as those respondents who had smoked one or more cigarettes within the 30 days preceding the survey. Several potential predictors for smoking were investigated including smoking history(never, experimental, former smoker), sociodemographic factors, environmental factors, attitudes toward smoking, and behavioral factors. Logistic regression was used to predict smoking with SPSS ver. 12.0. Results : According to multiple logistic regression analysis, those students who were more likely to smoke after one year were former smokers(OR: 2.12, 95% CI=1.01-4.44), current drinkers(OR: 2.55, 95% CI=1.33-4.89), who had four or five smokers among five best friends(OR: 3.43. 95% CI=1.14-10.30). In addition, those who had smokers among family members besides parents or siblings(OR: 1.66, 95% CI=0.92-2.98), exhibited a high level of subjective stress(OR: 1.77, 95% CI=0.96-3.26), or had a very good relationship with friends(OR: 1.93, 95% CI=0.99-3.75) were also more likely to smoke albeit with marginal statistical significance(p<0.1). Conclusions : A smoking prevention program aimed at high school students may be more effective with due consideration of the predictors highlighted in this study. However, further studies with larger sample size and various target populations are necessary to find potential predictors not found in this study but suggested in other longitudinal studies.

서해연안 조간대에 서식하는 두줄망둑(Tridentiger trigonocephalus) 자치어의 먹이생물

김종연(Jong-Yeon KIM),윤종만(Jong-Man YOON) 한국수산해양교육학회 2016 水産海洋敎育硏究 Vol.28 No.1

To investigate the feeding habits of Tridentiger trigonocephalus juveniles captured in the intertidal zone of Dodun-ri, Seocheon-gun from the end of May to early June 2012, the gut contents were observed. Feeding incidence of the juveniles increased twice a day, first in the morning and second in the afternoon. The major food organisms of the juveniles (6.5〜10.0 ㎜ NL) were composed of copepods (65.4%), amphipods (2.0%), shrimp larvae (14.5%), polychaete larvae (22.6%), and etc. These food items held more than 2 percentage in the dry weight of the total food items.

신장염 환자의 식행동 및 영양상태 평가

김종연(Kim Jong Yeon),오세영(Oh Se-Young),임천규(Ihm Chyun Gyu) 韓國營養學會 2001 Journal of Nutrition and Health Vol.34 No.7