인터넷상의 계약의 성립

권대우 弘益大學校 法學硏究所 1999 법학연구 Vol.1 No.-

Seit einiger Zeit linden sich in der Rechtsliteratur vermehrt zosarnmegesetzte Begriff "electronic commerce" Dieser Typ des Geschaefts im Internet besteht aus drei Elemente, naemlich, opene Network, Austausch der digitalen Daten, rechtsbildende Geschaefte in der Form der digitalen Daten. Ein Typ der Internet-Geschaefte ist Einkaufen in einer Cyber Shopping-Moll. Dafuer sollen mehrere rechtliche Aspekte geprueft werden. Nur eine geschaeftsfaehige Person kann da ein wirksames Geschaeft machen. Es ist moeglich, dass Kunden eines Anbieters in Cybermarkt unter dem Namfrn eines Drittens oder unter Phantasienarnen auftreten. Der Anbieter schliesst nor mil dem Erklaerenden ein Vertrag ab, es sei denn, der Vertretenen die Vertretung anerkennt. Die Darstellung der Waren (und/ odor Dienstleistungen), die von einem bestimmterl Unterriehmen bezogen werden koennen, ist in aller Regel nicht als Angebot, sodnern lediglich als Aufforderung zur Abgabe von Angeboten. Nach der Anbieter dem Angebot der Kunden angenommen hat, kommt der Vertrag zustande. Da nach dem koreanische Internationrles Privatrecht, gelten die koreanischen Regelungen ueber Verbraucherschutz auf das Internet-Geschaeft, wenn der Verbraucher in Korea sein Antrag gestellt hat, oder seine rechtsmaessige Addresse in Korea hat. Gemaess dem koreanischen Gesetz ueber Versandgeschaeft hat man ein Widerrufrecht im Zeitraum von 20 Tagen nach der Ablieferung der Ware in beschraenkten Faellen.

約款의 不當性 規制

權大祐 서강대학교 법학연구소 2001 서강법학 Vol.3 No.-

毛髮의 明度變化 硏究 : 시간, 열, 호일, 재도포 등을 중심으로

권대순 공주영상정보대학 2001 논문집 Vol.8 No.-

본 연구에서는 시간의 변화에 따른 탈색의 명도와 외부조건이 탈색에 미치는 영향 등을 실험하였다. 이러한 연구를 위해 2레벨의 친수성모와 분말타입의 탈색약 등을 사용하여 일정한 시간을 정하여 시술을 하였고, 시술결과를 사진촬영을 하였다. 본 연구결과를 통해 나타난 결론은 다음과 같다. 1. 시간의 변화에 따른 탈색의 명도는 일정시간(15분 이내)동안에는 색상의 밝기를 확연히 느낄 수 있었으나, 그 이후에는 시간이 흘러도 명도의 변화를 거의 느낄 수 없었다. 2. 외부의 조건에 따른 모발의 명도변화는 열처리를 한 것이 가장 밝았으며, 10분 후 재도포, 호일, 자연방치의 순이었다. 그러나 일반적으로 예상한 것과는 달리 10분 후 재도포와 호일을 싸서 자연방치, 자연방치의 색상의 차이가 거의 없었다. 따라서 20분이라는 시간의 제약속에서는 굳히 외부조건은 별다른 의미가 없다. 그러나 열처리를 한 모발의 명도는 색상의 차이를 뚜렷히 느낄 수 있었으며, 이를 통해 탈색의 명도변화에 온도가 매우 큰 영향을 미친다는 사실을 확인할 수 있었다. 그러나 본 연구는 2레벨의 친수성모발을 대상으로 하였고, 약의 선정에 있어서도 특정약을 선정하였기 때문에 전체적인 모발에 위의 실험 결과를 적용한다는 것은 한계가 있다. 따라서 앞으로의 연구에서는 발수성모발과 다공성모발에도 시술을 하여야 하고, 여러 가지 탈색약과 농도, 온도 등의 변화를 주어 다양한 실험이 이루어져야 할 필요가 있다.

RuO₂계 슈퍼캐패시터의 전기화학적 특성에 관한 연구

權大哲,朱宰伯 弘益大學校 科學技術硏究所 2004 科學技術硏究論文集 Vol.15 No.-

Recently RuO₂·xH₂O is one of the best candidates for use as a pseudocapacitance material, but ruthenium is a very expensive material compared to activated carbon. In this work, the ruthenium-carbon electrodes were prepared with sol-gel process by dipping the carbon in various concentrations of ruthenium and annealing. Their physical properties were analyzed by BET, SEM, XRD, etc. Prepared electrode was tested by cyclic voltammetry and the specfic capacitances were calculated. The effect of ruthenium content on carbon were observed. Ruthenium-carbon electrode were used for the evaluation of various aqueous electrolytes and the adequate electrolyte were selected. Carbon electrode was prepared and used for the test of nonaqueous electrolyte. The charge-dischage cycle was examined for the performance of EDLC (electric double layer capacitor) cell fabricted in this study. As a result, electrodes with various contents of ruthenium oxide on carbon show good performace as a capacitor electrode. The 10 wt% ruthenium-carbon electrode was tested in various electrolytes such as HCl, NaOH, HNO₃, LiCl, LiOH, H₂SO₄, etc. by cyclic voltammetry method and the specific capacitances in H₂SO₄ and HNO3 solution show the 203 F/g and 157 F/g, respecively, which are about 2-3 times larger than the other electrolytes.

고효율 준호기성 매립구조에서 침출수처리를 중심으로 한 환경성 검토

권대원,서정인 嶺南大學校 工業技術硏究所 2002 工業技術硏究所論文集 Vol.30 No.2

Management of leachate generated from the semi-aerobic landfill system has become a serious problem in recent years. For the enhancement of the efficiency of semi-aerobic landfill system as well as the reduction of environmental impacts of leachate treatment, we examined three lysimeter systems including conventional system(A), leachate recirculation and surface capping liner system(B), and added air supply to system B(C). Exeriments were performed at room temperature with the municipal solid waste(MSW). Lysimeter B yielded higher reduction of organic compounds and nitrogen compared to lysimeter A due to the reasons that leachate recirculation maintained appropriate water content and nutrition balance in the MSW, and thereby the requirement energy for leachate to be treated was 120 times s much as leachate to be recirculated. Also, in the lysimeter B, the most of nutrification material, total nitrogen and total phosphate, were eliminated in the recirculation process. However, the reduction rate of organic compounds and nitrogen was seriously decreased in excess of 120 days, indicating that most of the soluble organic compounds and nitrogen in the MSW were released to the leachte phase in this period. During that time, the reduction rate of organic compounds and nitrogen was increased by the air supply. AS a result, lysimeter B is better than lysimeter A, in respect to energy consumption and eutrophication. It may be appeared that lysimeter C has disadvantage in energy consumption, but it has advantage in respect to reuse of landfill come earlier true.

兒童期 精神障碍의 家族的 危險性에 關한 發達的 接近 : 後天的 要因을 中心으로

權大度 숙명여자대학교 대학원원우회 1987 원우논총 Vol.5 No.-

The developmental perspectives of child psychopathology are concerned with continuity between childhood and adult Psychopathology, and the definition of normality and adaptation in the context of development. This suggests that children are continually growing and maturing organisms undergoing both quantitative and qualitative changes in the direction of increasing differenciation and integration of various modes of functioning. The judgment about normality and dysfunction should be made relative to what is expected given the child's age, sex, environmental context, developmental task, level of functioning, and phase in the progression through development. So the developmental perspectives understand abnormality as the deviation of normality and regard intervention as the help forward normal developmental process. The definition of a high-risk child is one who is at a greater than average risk for later deviancies in behavior because of membership in some identifiable population. The current study model of risk are biomedical model and transectional one. In biomedical model, retrospective studies often gave the impress of having established clear relationship between pregnancy and delivery complication and later deviance, but in prospective studies of the same variables have not succeeded in demonstrating the predictive efficiency of these supposed risk factors, because most infants who suffer perinatal problem have proven to have normal developmental outcome. To understand this discontinuity between biological and behavioral function, it is suggested that there is the self-righting tendency which have the compansatory aspect that move children from abnormal biological states to normal behavioral one. In this point, the transectional model which conceptualize the complexity of relationship between a dynamically organized child and dynamically organized environmental context is needed. Child in the developmental process are affected continually by various environmental factors, specially familial ones. When the familial environment have problems of parental illness, low SES, and maltreatment such as abusive and neglectful rearing, these factors pollute the mother-child interaction to increase the risk of psychopathology. To provide the appropriate intervention, the direct intervention into the parent-child interaction is needed and the integration of social, political and professional resources is also required.

매립쓰레기의 유기물분해에 미치는 영향인자에 관한 연구

權大原 대구산업정보대학 1998 논문집 Vol.12 No.2

To evaluate gas production rate in landfill waste samples with moisture content up to about 60 to 80%, physico-chemical characteristics of landfill waste, gas yields and composition in anaerobic incubation of landfill waste samples after 1 year in landfill were investigated. On the wet weight base, the composition of landfill waste such as plastic & rubber, paper, wood and garbage (including vegetables), and wood after 1 year in landfil was described 28%, 24%, 3%, 10% respectively. Gas yields on garbage and paper in landfill waste samples at incubation time 40 days increased with increasing moisture content up to about 60 to 80%, and paper with moisture content 80% was presented the highest value as 345.56ml·g^(-1) among five experimetal series. Methane was detected in paper content reactor.

매립된 쓰레기에 있어서 종이류와 주방쓰레기의 조성비에 따른 가스발생포텐셜의 변화

권대원,서정인 嶺南大學校 環境問題硏究所 1996 環境硏究 Vol.16 No.1

요약문매립되는 생활쓰레기는 그 대부분이 비닐봉지에 충진된 상태로 매립되는 것이 일반 적이며 매립지내 생활쓰레기의 분해 상황에 대한 조사는 봉지내부의 쓰레기를 파악하는 것 이 효과적이다. 따라서 본 연구에서는 매립경과 1년후의 봉지형쓰레기중 종이류와 주방쓰레 기의 조성비 변화에 따른 가스발생포텐셜을 평가하기 위하여 매립쓰레기의 성상과 그 물리 ·화학적인 특성과 혐기성 반응기에서 배양실험을 하여 분해상황을 평가하였다. 그 결과, 매 립경과 1년 후의 쓰레기중 생 물이 분해성쓰레기의 조성은 습윤중량을 기준으로 종이, 주방 쓰레기, 나무류의 순으로 각각 26%, 7%, 2%로 나타났다. 종이류와 주방쓰레기의 조성비별 가스발생포텐셜은 종이의 함유비 100%, 80%, 60%, 40%, 0%에서 각각 0.432, 0.074, 0.070, 0.176, 0.134로 나타났으며 종이의 함유비 100%가 종이의 함유비 60%에 비해 약 6배이상의 가스발생량을 보였으며, 종이함유비가 100% < 40% < 0% > 80% < 60%의 순으로 가스발 생을 보였다. CH,의 발생은 종이의 함유비 0%, 40%, 60%의 경우 검출되지 않았으며, 종이 의 함유비 100%의 경우 0.189, 종이의 함유비가 80%의 경우 0.005로 나타났으며, 종이의 함 유비 40%, 60%의 반응기는 높은 수소분압으로 CH洲 발생하지 않은 것으로 생각된다.AbstractTo evaluate gas production potential on the composition ratio of garbage and paper in landfill samples, physico-chemical characteristics of landfill refuse, gas production volume and composition in anaerobic incubation of landfill sample after 1 year in landfill were investigated. On the wet weight base, the composition of biodegradable refuse such as paper, garbage (including vegetables), and wood after 1 year in landfill was presented 26 %, 7 % and 2 %, respectively. Gas production potential on composition ratio of garbage and paper in landfill samples at incubation time 60 days, when paper content ratio is 100 %, was presented the highest value as 0.432 among five experimetal series. The methane was detected in the reactor of paper content ratio over 80 %.

光섬유를 이용한 레벨센서의 開發

권대혁 경북대학교 센서기술연구소 1996 연차보고서 Vol.1996 No.-

KOH 수용액을 이용하여 실리콘 식각공정기술을 확립하였으며, 이를 이용하여 실리콘 기판 위에 스트레스 균형이 이루어진 600 ㎚ 두께의 Si_3N_4/SiO_2/Si_3N_4 다이아프램을 제조하였다. 이때의 실리콘의 식각률은 약 1.45 ㎛/min정도였다. NON 박막과Au/NiCr/NON 박막에 대한 광투과도, 광흡수도 및 광반사율을 측정한 결과 광흡수는 두 박막에 대해 수%였다. NON 다이아프램 뒷면에 약 100 ㎚의 금을 진공증착하여 제조된 Au/NiCr/NON 박막의 광특성을 조사한 결과, 박막의 광투과도를 수%정도로 감소시킬 수 있어서 센서의 광반사막으로 사용할 수 있었다. NON 다이아프램을 이용하여 제조한 수위측정용 압력센서는 3×3 ㎟, 4×4 ㎟, 5×5 ㎟ 의 정사각형 다이아프램 크기에서 약 3.886 ㎻/㎪, 4.857 ㎻/㎪ 및 5.829 ㎻/㎪의 압력감도를 나타내었으며, 광출력은 인가압력이 증가함에 따라 감소하였다. 광손실을 줄이기 위해 광송수신용 광섬유를 코아 직경이 62.5 ㎛인 멀터모드 광섬유를 사용하였고 다이아프램의 크기를 3×3 ㎟, 4×4 ㎟ 및 5×5 ㎟ 등으로 각각 변화시켜 광강도형 멀터모드 광섬유 압력센서를 제조하고 그 압력특성을 조사하였다. 측정된 광섬유 압력센서의 감도는 각각 약 20.689 ㎻/㎪, 26.694 ㎻/㎪ 및 39.331 ㎻/㎪였다. 광섬유 단면위에 RF 마그네트론 스퍼터링법으로 TiO_2를 증착하였다. TiO_2 박막의 굴절률 및 두께는 각각 약 2.43과 800 Å였다. 광섬유 Fabry-Peort 간섭계를 실리콘 다이아프램과 NON 다이아프램과 결합하여 광간섭형 압력센서를 제조하였다. 5×5 ㎟ 크기의 실리콘 다이아프램의 경우, 그 감도는 두께를 각각 15 ㎛와 50 ㎛로 변화시켰을 때 0.497 radian/㎪ 및 0.392 radian/㎪였다. 또한, 600 ㎚-NON 다이아프램의 경우에는 다이아프램의 크기fmf 2×2 ㎟, 5×5 ㎟ 및 8×8 ㎟로 변화하였을 때 약 0.119radian/㎪, 1.003 radian/㎪ 및 1.571 radian/㎪의 압력감도를 나타내었다. Using KOH solution, silicon etching technology has been established and stress-balanced flat 600 ㎚ thick triple dielectric membrane(150 ㎚-Si_3N_4/300 ㎚ -SiO_2/150 ㎚-Si_3N_4) on silicon substrate has been fabricated. At this time, etching rate of silicon was around 1.45 ㎛/min. At the wavelength of the sensor light source near 1.3 ㎛, optical loss of the NON diaphragm was decreased to a few percents by depositing 100 ㎚-Au layer on it, which is sufficient to be used as a light reflection layer of the sensor. From the optical output power-pressure characteristics of the fabricated intensity-type pressure sensors, the sensitivities of the pressure sensor for measuring water level were about 3.886, 4.857, and 5.829 ㎻/㎪ for the diaphragm sizes of 3×3 ㎟, 4×4 ㎟ and 5×5 ㎟, indicating that the output power linearly decreased with increasing applied pressure. We have used 62.5/126 ㎛ multi-mode fiber for the light transmission to minimize optical loss, and the pressure characteristics were examined for the diaphragm sizes of 3×3 ㎟, 4×4 ㎟, 5×5 ㎟. The respective sensitivities were, about 20.689 ㎻/㎪, 26.694 ㎻/㎪, and 39.331 ㎻/㎪. TiO_2 mirror at the cross section of fiber optic was deposited by using RF magnetron sputter. The refractive index and thickness of the TiO_2 thin film was about 2.43 and 800 Å. An interferometric fiber optic sensor has been manufactured using a fiber optic Fabry-Perot interferferometer and a silicon diaphragm or a NON diaphragm. For the silicon diaphragm sizes of 5×5 ㎟, the sensitivities of the sensor silicon diaphragm thickness of 15 ㎛ and 50 ㎛ were 0.497 radian/㎪ and 0.392 radian/㎪, respectively. And for the silicon diaphragm sizes of 2×2 ㎟, 5×5 ㎟, 8×8 ㎟, the sensitivities were 0.110 radian/㎪, 1.003 radian/㎪, and 1.571 radian/㎪, respectively.

引張拘束 龜裂試驗에 依한 ABS EH32鋼 熔接部의 低溫龜裂 感受性

權海旭,金大憲,金星秀 영남대학교 공업기술연구소 1984 연구보고 Vol.12 No.1

Cracking of the welded zone of high strength steel is one of the most important factors of weldability and many kinds of test methods have been proposed to study that. In this study, cold cracking susceptibility of welded zone for high strength steel (ABS EH32 steel) with the shielded metal are welding was investigated by the tensile restraint cracking test. Effects of diffects of diffusible hydrogen contents on root cracking, lower critical stress, crack initiation and fracture method, hardness distribution of the welded zone and fractography were mainly investigated. The wet electrodes with higher diffusible hydrogen contents showed lower the critical lower stress level than the dried ones. Because of the hydrogen embrittlement, the heat affected zone by using the wet electrodes had higher hardness values than that by using the dried ones. Fracture surface of the heat affected zone with the wet electrodes showed mainly brittle fracture (intergranular and cleavage) and that of the weld metal also showed partially that due to the hydrogen embrittlement.