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MaxEnt 모델링을 이용한 기후변화 시나리오에 따른 서어나무 (Carpinus laxiflora)와 개서어나무 (C. tschonoskii)의 분포변화 예측
이민기 ( Min-ki Lee ),천정화 ( Jung-hwa Chun ),이창배 ( Chang-bae Lee ) 한국농림기상학회 2021 한국농림기상학회지 Vol.23 No.1
Hornbeams (Carpinus spp.), which are widely distributed in South Korea, are recognized as one of the most abundant species at climax stage in the temperate forests. Although the distribution and vegetation structure of the C. laxiflora community have been reported, little ecological information of C. tschonoskii is available. Little effort was made to examine the distribution shift of these species under the future climate conditions. This study was conducted to predict potential shifts in the distribution of C. laxiflora and C. tschonoskii in 2050s and 2090s under the two sets of climate change scenarios, RCP4.5 and RCP8.5. The MaxEnt model was used to predict the spatial distribution of two species using the occurrence data derived from the 6<sup>th</sup> National Forest Inventory data as well as climate and topography data. It was found that the main factors for the distribution of C. laxiflora were elevation, temperature seasonality, and mean annual precipitation. The distribution of C. tschonoskii, was influenced by temperature seasonality, mean annual precipitation, and mean diurnal rang. It was projected that the total habitat area of the C. laxiflora could increase by 1.05% and 1.11% under RCP 4.5 and RCP 8.5 scenarios, respectively. It was also predicted that the distributional area of C. tschonoskii could expand under the future climate conditions. These results highlighted that the climate change would have considerable impact on the spatial distribution of C. laxiflora and C. tschonoskii. These also suggested that ecological information derived from climate change impact assessment study can be used to develop proper forest management practices in response to climate change.
활동적 생활습관과 복합운동이 인슐린 저항성에 미치는 영향
홍창배(Chang Bae Hong),김기진(Ki Jin Kim) 한국사회체육학회 2007 한국사회체육학회지 Vol.0 No.30
The aim of the current study was to examine the changes of body composition, insulin resistance, blood lipid profiles and inflammatory markers following to spontaneous or controlled exercise participation in Korean adults selected from the general population. Subjects with previous diagnosis of diabetes were divided into 2 groups based upon spontaneous exercise participation for using a cross-sectional approach as active group (n=16) and non-active group (n=16). Additionally, we analyzed the effects of a 12 week exercise intervention program by the comparison of between exercise group (n=12) and control group (n=12). We measured anthropometric factors (BMI, percent body fat, WHR, and abdominal fat area by CT scanning), BP, blood levels of glucose, lipid profiles, fibrinogen, CRP, leptin, HbA1c, PAI-1, HOMA, OGTT and physical fitness. Independent t-tests were used to assess differences between active and non-active groups. Additionally, 2-way repeated ANOVA for group and time was used to compare the changes after a 12 week exercise intervention program. Significance was accepted at p<0.05. In cross sectional comparison, active group showed significantly (p<0.05) lower in WHR, visceral fat area, VSR, blood levels of TG, HbA1c and CRP than non-active group. Active group had a lower trend for HOMA-IR than non-active group, and showed significantly (p<0.05) lower in glucose response area of OGTT than non-active group. Exercise group showed a significant (p<0.05) decrease in WHR and HOMA-IR whereas control group showed no changes. In these results, we confirmed that continuous and regular exercise participation has a positive effect on insulin resistance with the decrease of WHR, visceral fat area and blood level of TG. We think that the more long-term exercise intervention may be effective improvement on insulin resistance.
배상현,오창윤,양성기,최길환,이광옥 조선대학교 지역사회발전연구원 1999 地域發展硏究 Vol.3 No.1
본 논문은 네트워크를 이용하여 인터넷 상에서 물류정보관리를 실시간으로 설계하고 이를 구현하고자 한다. LIS에서는 현재 도로수송에 편중된 화물운송 구조를 모델로 철도, 해운, 항공 등으로 물류정보 시스템망을 효율적인 정보시스템을 구축하여 크게 기업과 개인을 구성된 고객집단과 물류운송을 담당하는 운송회사 또는 화물운속조합으로 구성된 운송자 집단들 사이의 신속하고 효율적인 정보 제공을 통한 최적의 물류의 흐름을 담당하는 물류관리 설계를 목표로 하고 있다.
장두상,조인술,이기풍,배한수 영남이공대학 1996 論文集 Vol.25 No.-
The aim of this study is to modify the surface of poly(ethylene terephthalate) (PET) films by using low temperature plasma of starting materials such as hexafluorobenzene(HFB), 1,1,1,5,5,5-hexafluoro-2,4-pentanedione(HFPD), hexafluoroglutaric anhydride(HFGA), hexafluoroacetone trihydrate (HFATH), acrylic acid(AA), and acrylonitrile(AN). Plasma system made for this study was used in modifing PET films. PET films were treated by plasma and contact angles of modified film were measured according to Busscher method, and also the work of adhesion worked out as Young-Dupre' equation. The results were as follows. The effect of plasma treatment on the work of adhesion of PET films depend upon the kinds of the starting material, PET films treated by HFB, HFPD, and HFGA plasma were appeared relatively lower the work of adhesion than the untreated its, while PE-I' films treated by HFATH and AA plasma are showed higher than untreated its. But the PET film treated by AN plasma has been had the same work of adhesion of the untreated it. And the liquid group proposed by Busscher are not suitable to the assess in the high work of adhesion according to the Young-Dupre' equation.
하악 시상골 절단술 후 고정 방법에 따른 회귀 성향에 대한 비교 연구
배진오,이동근,오승환,신기영,장관식 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.2
Objective : To compare two different methods of rigid fixation in postoperative stability after mandibular setback, Material and Methods : 28 patients with Class III malocclusion were treated by bilateral sagittal split ramus osteotomy(BSSRO) and mandibular setback were selected for this study. Group A(n=14) had the bone segments fixed with monocortical miniplate on the lateral side of the mandibular body and Group B(n=14) had three noncompressive bicortical screw inserted at the genial area through a transcutaneous approach. Cephalograms were taken preoperatively, postoperatively within 1 weeks and at a follow-up period (mean 8.9 months after surgery) and the amount of setback and postoperative change were measured. Results : Postoperative relapse between two groups was minimal in setback of the mandible. Statistical analysis showed no significant difference in postoperative relapse. Conclusion : This study suggests that both methods of skeletal fixation investigated give comparable postoperative stability and their use in mandibular setback appears to be a fairly stable clinical procedure.