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청소년의 거부민감성과 대인관계문제의 관계: 인지적 유연성의 매개효과
민병남,김완일 한국청소년학회 2016 청소년학연구 Vol.23 No.10
The purpose of this study is to examine the mediating effects of cognitive flexibility on the relationship between the rejection sensitivity and interpersonal problems among adolescents. For this purpose, this study administered a sense of rejection sensitivity scale, cognitive flexibility scale and interpersonal problems scale to 347 adolescents from middle school located in W city in Gangwon-do. To examine the mediating effects of cognitive flexibility on the relationship between the rejection sensitivity and interpersonal problems, the mediating effect test by Baron & Kenny(1986) and Sobel-test were conducted. The results showed that cognitive flexibility has a partial mediating effect. This finding suggests that when counseling those adolescents who show difficulty in interpersonal relationship, there is a need to increase their cognitive flexibility. Based on this study finding, the limitations of this study and directions for future study are discussed. 본 연구의 목적은 청소년의 거부민감성과 대인관계문제와의 관계에서 인지적 유연성이 매개하는지를 알아보는 것이다. 본 연구를 위해 강원도 W시에 재학 중인 중학생 347명을 대상으로 거부민감성 척도, 인지적 유연성 척도, 대인관계문제 척도를 사용하여 설문을 실시하였다. 청소년의 거부민감성과 대인관계문제의 관계에서 인지적 유연성의 매개효과를 알아보기 위해 Baron과 Kenny(1986)의 매개효과 검증과 Sobel 검증을 하였다. 연구 결과, 인지적 유연성은 청소년의 거부민감성과 대인관계문제의 관계를 부분매개 하는 것으로 나타났다. 본 연구는 대인관계문제에서 어려움을 경험하는 청소년을 상담할 때, 인지적 유연성을 높여줄 필요가 있음을 시사한다. 이러한 연구결과에 기초하여 본 연구의 제한점 및 추후연구를 위한 제언을 제시하였다.
치아 우식증 수복용 복합레진의 개발과 치아 적합성에 관한 연구 제 2 편 : 치아와의 결합양상 및 적합성에 관한 연구
임호남,민병순,신제원 大韓齒科器材學會 1992 대한치과재료학회지 Vol.19 No.2
The purpose of this study was the evaluations of bonding behavior of experimental resins (KM-22) to acid etched enamel and surface treated dentin using shear bond strength and microleakage test. Enamel surfaces etched with various concentrated phosphoric acid and dentin surface treated with ferric compound were bonded with resin materials and used to measure the shear bond strength between them. To test the microleakage, tooth etched and filled with resins were cross cut and observed the degree of penetration of dye into interfaces. Following conclusions were drawn : 1. All of phosphoric diluted with various concentrations etching the enamel surfaces increased the shear bond strength of experimental resins to enamel, and acid concentrations over 30% did not make the significant higher bond strength of resins to etched enamel with it. 2. Some pretreatment of dentin smear layers increased the shear bond strength between dentin and resins. 3. Substantial leakage occurs around unetched composite restorations, and the filler added experimental resins showed the decresed penetration of the dye. 4. From dentin surfaces treated with EDTA, removal of smear layers and exposure of dentinal tubules were confirmed, but dentinal tubules of ferric oxalate treated dentin were occluded with some crystals regarded as precipitates.
리눅스 커널 쓰레드에 기반한 SSL 웹 암호화 가속기 개발
남의석 ( Nam Ui Seog ),민병조 ( Min Byeong Jo ),김학배 ( Kim Hag Bae ) 한국정보처리학회 2003 정보처리학회논문지 C : 정보통신,정보보안 Vol.10 No.6
We propose a kernel-level Secure Socket Layer (SSL) accelerator which significantly increases the processing rate of the SSL operation on a webserver. Because most of conventional SSL´s applied user threads for processing http requests, the CPU overhead, where the slow processing time are unavoidable. Our SSL accelerator, embedded in the kernel level, utilizes kernel threads as same number of CPUs. Thus, the webserver can allocate total CPU resources to handle the requests, which not only reduces switching time incurred from using system calls but also minimizes the send/receive operation on the network layer. To validate the effectiveness of our scheme, we evaluate its performance in comparison with the conventional Apache with/without our SSL accelerator. Consequently, the SSL accelerator improves the webserver performance by up to 200%.
상아질의 칼슘용액 처리가 글라스아이오노머 시멘트의 결합강도에 미치는 영향에 관한 연구
민병순,임호남 大韓齒科器材學會 1994 대한치과재료학회지 Vol.21 No.1
Bond strengths of glass ionomer cements using polyacrylic acid could be increased if the inorganic contents of dentin will be increased. This study was designed to confirm the increase of bond strengths of glass ionomer cements on the dentin surfaces of which inorganic contents were increased by the pretreatment using calcium solutions. Glass ionomer cements were classified and selected as a chemical curing luting cement, a chemical curing filling cement, and a light curing lining cement. Calcium solutions for the pretreatment of dentin were ITS solution and CaCl₂solution, distilled water was used as pretreatment agent for the control groups of each cements. Bond strengths between cements and dentin were measured with shear bond measurement method at 24 hours after the bonding. By the pretreatment of calcium solutions the bond strengths of chemical curing glass ionomer cements were increased, however the bond strengths of light curing glass ionomer cements were decreased. On the dentin surfaces treated with distilled water, light curing glass ionomer cements showed the higher bond strengths than that of chemical curing glass ionomer cements. The bond strengths of chemical curing glass ionomer cements obtained on the dentin treated with calcium solutions exceeded the bond strengths of light curing glass ionomer cements.