야뇨증 환아들의 심리사회적 특성에 대한 다기관 연구 : 행동 및 정서 문제를 중심으로

조수철,김재원,신민섭,황준원,한상원,박관현,이상돈,김경도,김건석,서홍진,이유식,정재용,김영균,문두건,남궁미경,한창희,조원열,김영식,배기수,이종국,정우영,신의진 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6

Objectives : The aim of this study was to examine the behavioral and emotional problems associated with nocturnal enuresis in Korean children. Methods : Three hundred eighteen children with nocturnal enuresis, together with their parents, completed the Child Behavior Checklist (CBCL), Disruptive Behavior Disorder Scale according to DSM-IV (DBDS), Children's Depression Inventory (CDI), State-Trait Anxiety Inventory for Children (STAIC), and Piers-Harris Children's Self-Concept Scale (PHCSC). Ninety-three normal students were selected as the control group. Results : Compared to the normal control group, the mean scores with regard to the withdrawn, social problems, attention problems, delinquent behavior, aggressive behavior, externalizing problems and total problems profiles were significantly higher in the nocturnal enuresis group according to the CBCL results. The nocturnal enuresis group also scored significantly higher in the ADHD and ODD profiles of the DBDS. The nocturnal enuresis group was more depressed and anxious than the control group according to the results of the CDI and STAI. The mean score of the PHCSC was significantly lower in the nocturnal enuresis group when compared to the normal control group. Conclusion : The results of this study suggest that children with nocturnal enuresis in Korea have clinically relevant behavioral and emotional problems. The findings support the link between nocturnal enuresis and psychopathology in Korean children.

불소의 국소도포에 의한 백서 치아 무기이온 용출 억제효과

김동응,송근배,윤희숙 慶北大學校 齒科大學 1990 慶北齒大論文集 Vol.7 No.2

In order to determine the inhibitory effects by topical fluorides on dissolution of inorganic ions, 2% NaF, 10% SnF_2 and 1.23% APF gel were topically applied to the incisors of rat for two to four times. The collected incisors were decalcified with 5ml of acetic acid buffer solutions(pH 4.5)for 30min. and dissolved inorganic ions(Ca & P) were measured with atomic absorption spectrophotometer and U-V spectrophotometer. The results obtained were as follows; Two times and four times application groups of APF, SnF_2 and NaF were superior to control group(F=9.0325, p<0.01) in inhibitory effect of dissolving calcium ions, but four times application groups had no statistically significant difference(F=1.8700, p>0.05). The inhibitory effect of dissolving phosphrus appeared more effective in APF, SnF_2 and NaF groups than control group, but had no statistically significant difference both two and four times topical fluoride application group(p>0.05). In comparing of calcium dissolution, fluoride application groups were more effective than nonfluoride group. It was significantly different in two times application groups (p<0.01), but had no significantly difference in four times application groups (p>0.05). The same result was obtained in the inhibitory effect of the phosphrus dissolution.

Mg₂SiO₄ : La, Ho 열형광선량계에서 활성제 농도가 글로우 커브에 미치는 영향 La, Ho TLD on Activation Concentration

김영국,손인호,채건식,노경석,오재근,이은숙 경남대학교 신소재연구소 1996 論文集 Vol.6 No.-

본 연구에서는 Mg₂SiO₄에 활성화 물질로 La, Ho를 첨가하여 열형광체를 제작하였고 불순물의 농도를 1wt.% ∼5 wt.%까지 변화시키면서 열평광강도의 glow curve를 측정하였다. 도한 열형광체의 glow curve를 peak shape법으로 분석해서 TL특성에 대한 포획 매개변수와 활성화 에너지, 발광차수, 선량의존성등을 조사하였으며, 그 물리적 특성을 조사하고 선량계로서 타당성과 실용성을 확인하였다. The Mg₂SiO₄: La, Ho thermoluminescent phospher has been prepared by sintring Mg₂SiO₄after doping the transition elements La and Ho. The heating rate is 10℃/sec at this thermoluminescent phospher are heated. The maximum peaks are found in the measured Mg₂SiO₄: La and Ho. TL glow curve at 229℃ and 345 C when the 1 wt.%-5 wt.%. The glow curve of TLD increased TL intensity and temperature of peak appears to the high temperature when the heating rate is l0℃/sec-25℃/sec. The activation energy of the main peak has been estimated by the peak shape method. The estimated activation energies are 1.77 eV. 1.52 eV respectively. The thermoluminescence process in Mg₂SiO₄: La and Ho are found to the 2nd order when the main peak of the glow curve is analyzed by peak shape method. The dose responses of Mg₂SiO₄: La and Ho TLD are linear up to intensity of X-ray.

남자 고등학교 세팍타크로 경기의 공격기술에 관한 분석 연구

김영호,고문석,제임스전,이영익,차정훈,현종건,김범수,임종만,이석인 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

This research aims at analysis of attack technique in sepaktakraw games. For this purpose, 3 high school coaches observed and recorded each game Five times in videos of high school male players' thirty games in 2003. The conclusion from the analysis of the recorded data are as follows. 1. Scissors spike was the most popular (favorite) attack technique. Rolling spike, tapping spike and heading spike was popular in order. 2. Heading spike showed the highest success rate (73.5%) in attack technique. And tapping spike (69.5%), scissors spike (57.8%) and rolling spike (67.11) showed a lower success rate in order. In failure rate, heading spike (5.5%), tapping spike (36.5%), scissors spike (32.2%) and rolling spike (32.9%) had a higher percentage in order. 3. When receive was stable, the success rate in attach technique was 47.1%, the failure rate was 20.1%. On the other hand, when receive was unstable, the success rate in attach technique was 16.5%, the failure rate was 14.3%.

TiC 被覆한 SiC纖維(Nicalon)의 알루미늄 基地에 對한 適合性

金錫胤,南勝義,金政根 弘益大學校 1983 弘大論叢 Vol.15 No.2

The interaction between SiC fiber and coated aluminum layer of commercially available SiC fiber vacuum-deposited by aluminum was studied at temperatures between room temperature and 700℃. In order to suppress the reaction between the SiC fiber and aluminum layer, thermodynamically stale TiC was precoated on the SiC fiber by activated reactive evaporation process prior to aluminum coating and the compatibility of TiC coated SiC fiber with aluminum have been investigated. Then the interaction of the SiC fiber and the coated aluminum layer was also studied between room temperature and 700℃. The fiber coating with TiC is ecpected to be effective for fabricating a sound composite in this system. The fiber coating with TiC is expected to be effective for fabricating a sound composite in this system. The wettability between SiC fiber and liquid aluminum was improved by the TiC coating. Aluminum coated SiC fiber heated at 650℃ was black and brittle, while no black and brittle was TiC and aluminum coated SiC fiber heated at the same temperaturer. It was, therefore, concluded that the TiC pre-coating on the SiC fiber was effective in suppressing the interation of the SiC fiber and the coated aluminum layer.

Polyester Satin 經編布의 칫수特性에 관한 硏究

金碩根,孫榮滿,崔在佑 嶺南大學校 工業技術硏究所 1991 연구보고 Vol.19 No.1

According toa various relaxed states, the changes in dimensional properties such as course density, wale density, loop length, run-in and shrinkage of the satin warp knitted polyester fabrics were studied. The results are as follows; Behavior in dimensional properties of the satin warp knitted fabric with different loop length showed similar tendency, a fully relaxed state was reached after dry heating at 170℃ and then K₁ value was 909.98. Experimental run-in was similar to the result of Grosberg's study. Area shrinkage ratio under fully relaxed state was reached to 17%. With proceeding of relaxation, the thickness and weight per unit area were increased and the bulkiness was decreased. But the thickness and weight per unit area were decreased and the bulkiness was increased with loop length.

정상 성인에서 Amitriptyline이 REM 수면에 미치는 영향

김태범,왕성근,신석철 대한생물치료정신의학회 1995 생물치료정신의학 Vol.1 No.2

To investigate the effects of amitriptyline on REM sleep in normal adults, author applied polysomnography of sleep structure to the volunteer before and after administration of amitriptyline 25㎎. The subjects were 8 healthy young adults, aged from 20 to 24 years old. The results were summarized as follows. 1. Compaired with the baseline, the decrease of the absolute value of REM sleep, the decrease of total REM sleep period and duration, the increase of REM sleep interval occured in amitriptyline administration night. 2. Compaired with the baseline, the increase of the absolute value and the relative of REM sleep, the increase of total REM sleep duration, the decrease of REM sleep latency occured in the first recovery night. 3. Compaired with the baseline, the increase of the relative value of REM sleep, the increase of REM sleep efficiency occured in the second recovery night. 4. In amitriptyline administration night, REM sleep supression effect of amitriptyline occured and in the first and in the first and the second recovery night, rebound phenomenon of REM sleep occured. 5. REM sleep supression effect of amitriptyline occured in totally each REM period time rather in specific sequential REM period, but rebound phenomenon of REM sleep markedly occured in the first REM period in first recovery night.

線 兩面編布의 Loop長이 剪斷特性에 미치는 影響

金碩根,崔在佑 嶺南大學校 工業技術硏究所 1985 연구보고 Vol.13 No.1

The shearing properties of the interlock knitted cotton fabrics which were knitted at various loop lengths and various relaxed states have been studied. The fully-relaxed state for interlock knitted cotton fabrics were arrived at after 24hrs of wetting out at 40℃ and additional 24hrs of tumble drying at 70℃. In this state, the area of fabric were shrank by 27% campared to the area of dry relaxed fabric. The weight per unit area were decreased with loop lengths and the thickness were increased. The shear rigidity, G and coercive force, 2HG were decreased with loop lengths, especially at tumble dryed state.

PSPICE를 이용한 수정된 Chua회로의 카오스 통신 시뮬레이션

김성곤,배준호,호인석,최희주,변건식 東亞大學校 附設 情報通信硏究所 1999 情報通信硏究所論文誌 Vol.7 No.1

Recently, there has been much interest in utilizing chaotic circuits to implement a secure communication. Although Chua's circuit is the simplest chaotic circuit, it has complex chaotic dynamic porperties. The modified Chua's circuit has two additional components more than Chua's cirecuit and makes the circuit equations become fore-dimensional instead of three-dimensional, it makes Chua's circuit more flexible. In this paper, we use two modified Chua's oscillators to simulation on the chaos control and synchronizaion. The simulation results show that the modified Chua's oscillator has good chaotic control and sunchronization. And we have successfully carried out the basic esperiment on the chaotic secure communication.

MgB₄O7 熱螢光體의 특성과 低에너지 X線의 線量測定

김영국,손인호,설정식,채건식,노경석 慶南大學校 附設 基礎科學硏究所 1997 硏究論文集 Vol.11 No.-

To develope the thermoluminescent radiation sensors and low energy X-ray of dosimetry. The TL phosphors of MgB₄O7 are prepared and their physical characteristics are investigated. MgB₄O7 : Tb. Tm. Dy. La. Ho. and Nd phosphors have been prepared by sintering around 580℃ for 2 hours followed by flowing Ar gas. Ar gas. Activation energy and kinetic order of main peak of glow curve were studied by two methods peak shape method and initial rise method. By these methods, the estimated activation energies were 0.76±0.02eV(Tb doped). 0.94±0.03(Tm doped). 0.72±0.02 (Dy doped). respectively. The activation energy frequency factor and kinetic order of thermoluminescent process for each TL phosphors are measured by analyzing the glow curve by initial rise. peak shape. different heating rate. isothermal decay method. And The emission spectra of TL phosphors are also measured. The TL phosphors prepared in this work may be utilized to radiation sensor elements becaue of their high sensitivity to low energy X-ray.