Changes of Landscape Structure for the Recent 20 Years in the Wangsuk Stream Basin of the Central Korea

Lee, Chang-Seok,Cho, Yong-Chan,Shin, Hyun-Chul,Lee, Seon-Mi The Ecological Society of Korea 2006 Journal of Ecology and Environment Vol.29 No.4

Landscape changes for 20 years between 1981 and 2001 in the Wangsuk stream basin located on the central Korea were investigated on the basis of physiognomic vegetation map made from the aerial photograph interpretation and field check. Changes of landscape structure were noticeable in agricultural field and forest landscape elements. Changes in the agricultural fields due to transformation of agricultural pattern into the institutional agriculture dominated landscape change, although urbanization also contributed to such change. The former change due to change of food production structure originated from socio-economic development during this period and the latter to the overpopulation of Seoul. As energy sources for heating and cooking, fertilizer, and fodder for livestock transform from plant materials to fossil fuel, manufactured one, and grain, succession of forest escaped from direct human disturbance dominated change of landscape structure in forested land. Differently from the positive landscape change in the upper area, change in the lower area deteriorated landscape quality by increasing artificial land. It was estimated that such landscape deterioration in the Wangsuk stream basin would influence water quality of the stream. In order to realize sustainable land-use against such environmental degradation, systematic environmental management based on landscape ecological perspective such as "an eco-plan for creating riparian vegetation belt," which is under preparation by Ministry of Environment, was recommended.

전치개교의 교정치료후 과두위치 변화

신수정,장영일 대한 두개하악장애학회 1993 대한두개하악장애학회지 Vol.5 No.2

ABSTRACTThis study was aimed to evaluate the changes in condylar position when severe anterior open bite pa- tients were treated with MEAW.The subjects consisted of 11 patients(21 TMJs) who visited the departement of orthodontics in SNUH, having severe anterior open bite as a chief complain. They were supposed to wear the up and down elas- tics and MEAW after finishing the leveling. The condylar position was evaluated with individualized cor- rected tomography in centric occlusion taken before and after treatment.The results were as follows; 1. In the change of condylar position after treatment, there were no statistically significant differences in right and left TMJs. 2. In the change of condylar position after treatment, there were no statistically significant differences in each malocclusion groups. 3. There were no statistically significant differences in percent dispacement of condyle between before and after treatment. 4. There were no statistically significant differences in the amount of change in condylar change. This study was aimed to evaluate the changes in condylar position when severe anterior open bite patients were treated with MEAW. The subjects consisted of 11 patients(21 TMJs) who visited the departement of orthodontics in SNUH, having severe anterior open bite as a chief complain. They were supposed to wear the up and down elastics and MEAW after finishing the leveling. The condylar position was evaluated with individualized corrected tomography in centric occlusion taken before and after treatment. The results were as follows ; 1. In the change of condylar position after treatment, there were no statistically significant differences in right and left TMJs. 2. In the change of condylar position after treatment, there were no statistically significant differences in each malocclusion groups. 3. There were no statistically significant differences in percent dispacement of condyle between before and after treatment. 4. There were no statistically significant differences in the amount of change in condylar change.

Brain Topological Correlates of Motor Performance Changes After Repetitive Transcranial Magnetic Stimulation

Park, Chang-hyun,Chang, Won Hyuk,Yoo, Woo-Kyoung,Shin, Yong-Il,Kim, Sung Tae,Kim, Yun-Hee Mary Ann Liebert 2014 Brain connectivity Vol.4 No.4

<P>Repetitive transcranial magnetic stimulation (rTMS) influences the brain temporally beyond the stimulation period and spatially beyond the stimulation site. Application of rTMS over the primary motor cortex (M1) has been shown to lead to plastic changes in interregional connectivity over the motor system as well as alterations in motor performance. With a sequential combination of rTMS over the M1 and functional magnetic resonance imaging (fMRI), we sought changes in the topology of brain networks and specifically the association of brain topological changes with motor performance changes. In a sham-controlled parallel group experimental design, real or sham rTMS was administered to each of the 15 healthy subjects without prior motor-related dysfunctions, over the right M1 at a high frequency of 10 Hz. Before and after the intervention, fMRI data were acquired during a sequential finger motor task using the left, nondominant hand. Changes in the topology of brain networks were assessed in terms of global and local efficiency, which measures the efficiency in transporting information at global and local scales, respectively, provided by graph-theoretical analysis. Greater motor performance changes toward improvements after real rTMS were shown in individuals who exhibited more increases in global efficiency and more decreases in local efficiency. The enhancement of motor performance after rTMS is supposed to be associated with brain topological changes, such that global information exchange is facilitated, while local information exchange is restricted.</P>

건축 프로젝트 적정 설계변경 관리를 위한 사례조사

김성욱(Kim Sung-Wook),남혜원(Nam Hye-Won),이종식(Lee Jong-Sik),신창현(Shin Chang-Hyun),전재열(Chun Jae-Youl) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(구조계)

Recent design changes in the existing research on the factors and issues of design changes and analysis, responsible for analyzing the relationship, procedural issues, and issues of research that can be active. However, changes in the design of problems are essentially designed to complement the book is for the procedure. Methodology for dealing with design changes in the characteristics of the country and to reflect more realistically, and various design changes and looked at trends in related research. the design Change of this study to examine the domestic status and problems, identify the status of the country about the design changes, and in suggesting the direction to the development of the design changes.

텍스트마이닝을 활용한 우리나라 기후변화 리스크 평가 및 적응 대책 논의

강영은(Kang, Youngeun),신지영(Shin, Jiyoung),박창석(Park, Chang Sug) 한국도시설계학회 2016 도시설계 : 한국도시설계학회지 Vol.17 No.2

기후변화 연구는 광범위한 영향 범위와 불확실성 때문에, 장기적인 관점에서 기후변화 리스크를 평가하고 예측하여 효율적으로 대비하는 것이 필수적이다. 본 연구는 텍스트마이닝 기법을 활용하여 1990년대 이후 기후변화 영향 관련 신문기사 4,150건에 대해 연관되는 기후변화 리스크 항목을 매칭하고, 리스크 항목별 매칭 빈도 및 피해 크기(피해액)를 분석하였다. 연구 결과, 주요 리스크 항목들의 기후 동인들은 태풍/호우에 의한 영향이 많았으며, 피해 유형에서는 인명 피해, 인프라 시설 파괴 및 훼손, 농경지 피해 등의 비중이 높은 것으로 나타났다. 기 수행된 리스크 평가의 주요 리스크 항목과 비교에서는 42.4%의 중복 비율이 도출되었으며, 중복되지 않은 항목분석 결과, 본 연구의 결과가 직접적인 피해(1차적인 리스크)에 보다 집중되고 있는 경향을 파악할 수 있었다. 본 연구에서는 기존 연구에서 한계점으로 제기되었던 리스크의 ‘발생가능성’과 ‘결과의 크기’ 의 과학적 증거 부족을 보완했다는 측면에서 충분한 의의가 있다. 향후 기후변화 적응 대책 반영을 위한 바람직한 리스크 평가를 위해서는 본 연구에서 도출한 내용과 전문가 평가결과가 절충되어 리스크 평가의 신뢰성과 타당성을 동시에 확보할 수 있어야 할 것이다. Climate change adaptation plans and related studies have played a major role in reducing the risks of climate change. The studies, associated with climate change in particular, assess and predict the long run influence of climate change risk on society, the economy, and the environment in the long run, due to its extensive impact and uncertainty. This study evaluates the consequences and probability of climate change risk based on 4,150 newspapers articles after the 1990s related to climate change impact through text-mining. This study revealed that the climate drivers causing high recorded climate change risks include typhoons, heavy rains, and others. In addition, risk consequence categories were focused on casualties, damages to infrastructure and agricultural land. The percentage of risk overlapping between this study and the previous studies was 42.4%. The risks, that did not overlap, illustrate that this study has a tendency to focus on direct rather than indirect risks like social group vulnerability, social disparities, and so on. This study’s originality is illustrated through its supplementary concrete evidence for climate change risk assessment. From this step forward, climate change adaptation plans have to reflect not only the result of observed climate change risks like those identified in this study but also experts’ survey based risk for minimizing uncertainty.

전치개교의 교정치료와 과두위치 변화

신수정,장영일 대한치과교정학회 1994 대한치과교정학회지 Vol.24 No.3

The study was aimed to evaluate the changes in condylar position when severe anterior open bite patients were treated with MEAW. The subjects consisted of 11 patients(21 TMJs) who visited the departement of orthodontics in SNUH, having severe anterior open bite as a chief complain. They were supposed to wear the up and down elastics and MEAW after finishing the leveling. The condylar position was evaluated with individualized corrected tomography in centric occlusion taken before and after treatment. The results were as follows ; 1. In the change of condylar position after treatment, there were no statistically significant differences in right and left TMJs. 2. In the change of condylar position after treatment, there were no statistically significant differences in each malocclusion groups. 3. There were no statistically significant differences in percent dispacement of condyle between before and after treatment. 4. There were no statistically significant differences in the amount of change in condylar change.

Monitoring of Motor and Somatosensory Evoked Potentials During Spine Surgery: Intraoperative Changes and Postoperative Outcomes

Shin Hye Chang,박윤길,김대현,윤서연 대한재활의학회 2016 Annals of Rehabilitation Medicine Vol.40 No.3

Objective To evaluate whether the combination of muscle motor evoked potentials (mMEPs) and somatosensory evoked potentials (SEPs) measured during spinal surgery can predict immediate and permanent postoperative motor deficits.Methods mMEP and SEP was monitored in patients undergoing spinal surgery between November 2012 and July 2014. mMEPs were elicited by a train of transcranial electrical stimulation over the motor cortex and recorded from the upper/lower limbs. SEPs were recorded by stimulating the tibial and median nerves.Results Combined mMEP/SEP recording was successfully achieved in 190 operations. In 117 of these, mMEPs and SEPs were stable and 73 showed significant changes. In 20 cases, motor deficits in the first 48 postoperative hours were observed and 6 patients manifested permanent neurological deficits. The two potentials were monitored in a number of spinal surgeries. For surgery on spinal deformities, the sensitivity and specificity of combined mMEP/SEP monitoring were 100% and 92.4%, respectively. In the case of spinal cord tumor surgeries, sensitivity was only 50% but SEP changes were observed preceding permanent motor deficits in some cases.Conclusion Intraoperative monitoring is a useful tool in spinal surgery. For spinal deformity surgery, combined mMEP/SEP monitoring showed high sensitivity and specificity; in spinal tumor surgery, only SEP changes predicted permanent motor deficits. Therefore, mMEP, SEP, and joint monitoring may all be appropriate and beneficial for the intraoperative monitoring of spinal surgery.

The Effect of Balance between General Walking Exercise and Power Walking Exercise

Shin Gyun Kim,Chang Sook Kim 국제물리치료학회 2013 Journal of International Academy of Physical Ther Vol.4 No.2

This study aims to compared effect of balance between general walking exercise and power walking exercise. Twenty subjects were classified into two groups, general walking exercise(n=10) and power walking exercise(n=10). As a result, two group showed difference within the group and there is significant difference between two groups. 1) In compared static balance of sway area at pre-post test to exercise group, general walking exercise group did not change significantly. however, power walking exercise group did change significantly. and At sway distance, two group showed significant changes. 2) In compared Static balance between the groups sway area and sway path at pre-post test, two group showed significant changes. 3) In compared dynamic balance of center distance at pre-post test to exercise group, general walking exercise group was no significant difference in all directions. power walking exercise group was significant difference in all directions. 4) In compared dynamic balance between the groups sway area and sway path at pre-post test, there was no significant difference in leftward, rightward, forward directions and was significant difference in backward, overall direction. Therefore, power walking exercise can be recommended promote balance.

Changes in Spatiotemporal Parameters and Lower Limb Coordination During Prosthetic Gait Training in Unilateral Transfemoral Amputees

Yunhee Chang,Chang-Yong Ko,Bo Ra Jeong,Jung Sun Kang,Hyuk-Jae Choi,Gyoosuk Kim,Hyunjun Shin,Sehoon Park 한국정밀공학회 2022 International Journal of Precision Engineering and Vol.23 No.3

When applying prosthetic gait training to patients with lower limb amputation, monitoring the gait change process is crucial for establishing and modifying rehabilitation training plans. In addition, since human gait involves complex movement of several joints, it is necessary to analyze the organic movement of adjacent joints rather than a single joint in the lower extremities for understanding the process of gait change. Therefore, this study aimed to analyze changes in spatiotemporal parameters and lower limb coordination during prosthetic gait training in unilateral transfemoral amputees (TFAs). This retrospective case–control study included 10 unilateral TFAs and 10 healthy individuals as controls. TFAs received prosthetic gait training for 12 weeks and gait changes were analyzed every 2 weeks using a 3D motion analysis system. The measured variables were spatiotemporal parameters and the continuous relative phase between hip and knee joints. The highest improvement in walking speed was seen at week 4 of training, and the continuous relative phase was most symmetric at week 8. The lower limb coordination pattern was more in-phase in the TFAs than in the controls, and the coordination variability was also lower for the TFAs than for the controls. In addition, the rate of change in lower limb coordination of TFAs was lower than that of spatiotemporal parameters and was significantly different from that of the controls even after training. Considering that the decrease in lower limb coordination is related to gait efficiency, balance, and risk of fall, there is a need to develop therapeutic strategies that can further improve the coordination of TFAs.

알코올 및 인삼액이 효소활성도에 미치는 영향에 관한 연구

신경현,조만희,김창세 순천향대학교 1994 논문집 Vol.17 No.2

This study was investigated for the change of r-GTP, CPK activity and CPK-isoenzyme by alcohol and Ginseng administration, The normal white S.D rats were classified with four groups; ethanol treated was group A, ethanol pretreated group combined pretreated with Ginseng extract was group B, Ginseng extract treated was group C, and Ginseng extract treated group combined pretreated with ethanol was group D. The white rats of four groups were treated with 20%, 30%, 40% ethanol and/or 1% Ginseng extract. Then enzyme activities such as r-GTP, CPK and CPK-isoenzyme had been measared in serum, hepatic, and renal tissues. The sample was collected by 5 day intervalus for 25 days. The following results were obtained. 1. The changes of serum r-GTP activities were significantly increased in ethanol-treated group, decreased in Ginseng-treated group. 2. The changes of hepatic r-GTP activites were significantly increased in ethanol-treated group, decreased in Ginseng-treated group. 3. The changes of renal r-GTP activites were significantly increased in ethanol-treated group, decreased in ginseng-treated group. 4. The changes of serum CPK activites were significantly increased in ethanol-treated group, decreased in ginseng-treated group. 5. The changes of hepatic and renal tissue CPK activites were not significant. 6. The changes of serum and hepatic tissue CPK-isoengyme were significantly increased in ethanol-treated group, decreased in ginseng-treated group combined pretreated with ethanol. 7. The changes of CPK-isoengyme, CPK 1 and CPK 2 were not significant.