포스트모던 관광의 지속가능성에 관한 연구

오정준(Oh, Jeong-Joon),이후석(Lee, Hoo-Suk) 한국관광연구학회 2003 관광연구저널 Vol.17 No.1

Postmodern tourism has been conceived as environmentally-friendly tourism and thus sustainable tourism. In reality, however, postmodern tourism tends to have a negative impact on the environment and lives of indigenous people. The purpose of this study is to analyze sustainability of so-called postmodern tourism and to suggest a new direction for postmodern tourism through a case study of Ahbu Oh-Rum in Jeju Island. The case study suggests that economic benefits to and social-cultural impacts on the indigenous people of the development of postmodern tourism in Ahbu oh-rum is very few, while environmental destruction has been increased. For instance, soil erosion resulted from trampling is found in many slopes, and a number of cows are infertile due to tourists' interference. As a result, indigenous p대ple, especially who work at a meadow, prohibit tourists from visiting their meadow because of tourists' negative impact on cows. The case study also finds that Ahbu Oh-Rum destination lucks or destination management systems to conserve the environment of the destination and basic facilities such as tourist roads, visitors centers, and interpretation services for tourists. Therefore, the destination management systems and the basic facilities are necessary to improve the sustainability of postmodern tow-ism in terms of economic revenue and conservation of the environment.

생태관광지의 지속가능성에 관한 연구

오정준(Jeong-Joon Oh) 대한지리학회 2003 대한지리학회지 Vol.38 No.4

생태관광은 관광객의 다양한 욕구를 충족시켜주는 동시에 관광지의 환경을 보전할 수 있는 관광유형으로 인식됨으로써 지속가능한 관광과 동일한 것으로 규정되어왔다. 그러나 최근에 형성된 다수의 생태관광지가 환경파괴에 직면하고 있음으로써 생태관광에 대한 인식의 새로운 전환이 요구되고 있다. 이에 본 논문은 제주도내 3개 생태관광지의 지속가능성을 평가함으로써 지속가능한 관광으로의 적격여부를 판단하고, 생태관광에 대한 인식의 새로운 지평을 확립하는데 목적을 두고 있다. 조사 결과 송당리 아부오름과 종달리 체험어장의 지속가능성은 낮은 것으로 나타났고, 예래동 생태관광마을은 지속가능성이 높은 것으로 나타났다. 이는 곧 생태관광이 지속 가능한 관광과 동일하지 않다는 것을 의미하며, 올바른 관광계획, 개발, 관리에 따라 지속가능한 관광으로 발전할 수 있음을 시사하는 것이다. Ecotourism has been considered as sustainable tourism since it has been believed to preserve the environment of a tourist destination as well as to satisfy the various needs of tourists. However, most of destinations recently developed for ecotourism have confronted environmental degradation. Therefore, it is necessary to challenge and reestablish the concept of ecotourism. This study seeks to provide new perspectives on the concept of ecotourism by estimating the sustainability of three ecotourism destinations in Jeju Island. The Yae-Rae Dong Ecotourism Village shows a high level of sustainability, while the Ah-Bu Oh-rum at Song-Dang Ri and the Experience Beach at Jong-Dal Ri shows a low level of ustainability. In result, the ecotourism in itself is not sustainable tourism, and further this study suggests that appropriate planning, development, and management of a destination are important factors to decide the success of sustainable tourism.

이종접합재 접합 계면근방 균열의 응력 및 파괴특성

오정국,차용훈,오환섭,박준건,박경식 朝鮮大學校 機械技術硏究所 1998 機械技術硏究 Vol.1 No.1

현재까지 이종마찰압접재의 강도측정은 실험 (7)-(15)에 의해 구해져 왔다. 하지만 최근 이종마찰압접재의 효율성을 인정하여 여러 실용 부품에 응용하려는 연구가 한창 진행중이다. 이종마찰압접재에 대한 저자들(1)-(6)의 기초실험결과 일반적인 단종재와는 상이한 파괴거동(3)이 관찰되었고, 파괴역학적인 관점에서 정성적인 data 확보가 필요하게 되었다. 따라서 본 연구에서는 인장시험시 이종마찰압접재의 접합강도와 미소균열들에 의한 파괴거동을 파괴역학적 관점에서 해석적으로 고찰하여 보고자 경계요소법(BEM ; Boundary Element Method)을 이용하여 접합계면을 포함하는 접합부를 중심으로 계면상의 응력분포와 계면의 중앙에 결함이 균열로써 존재하는 경우의 응력분포와 인장시험시 열영향부에서 관찰된 균열의 모델링을 통한 균열선단에서의 응력해석을 행하였고, 그 결과 얻어진 중요한 내용을 요약하면 다음과 같다. 계면의 중앙에 균열이 존재하는 접합계면의 표면부에서 응력의 특이성이 발생하며 탄성계수의 비가 증가할수록 특이성이 증가함이 관찰되었다. 탄성계수의 비가 일정한 경우 균열의 크기가 변화하여도 계면의 표면부에서 발생하는 특이성은 거의 같은 값을 갖게 되며, 탄성계수의 비가 증가할수록 표면부의 응력 특이성의 크기는 증가한다. 이종마찰압접재의 인장시험시 관찰된 균열을 모델링 하여 해석한 결과 최대 응력 기준으로 살펴볼 때 인접한 균열선단에서의 응력분포는 균열을 합체시키는 방향으로 작용함을 알 수 있다. In this study stress distribution on the interface and stress near tip of the sub-interface crack in the dissimilar friction welded material is analyzed by using of BEM( Boundary Element Method). Stress singularity near surface of model to analyze is observed for various crack length and ratio of elastic modulus. Tensile and shear stress distribution near two neithbor sub-interface crack tips are analyzed. Existance of singularity near surface on the interface is particular situation so that we need to investigate for dissimilar friction welded materials by means of numerical analysis method.

정상인에서 흔들림 균형 훈련시 간헐적인 방법과 지속적 방법에 의한 시각적 되먹임의 효과 비교

오신영,박준영,장진호 한국전문물리치료학회 1997 한국전문물리치료학회지 Vol.4 No.2

六味知黃湯 投與가 高壓環境에 露出된 흰쥐의 血液造成과 臟器造織에 미치는 影響

오재근,강명신,조준용,이영일,최용어 韓國體育大學校附屬 體育科學硏究所 1996 韓國體育大學校附屬 體育科學硏究所論文集 Vol.15 No.1

This study was purposed to investigate the effect of yukmijihwangtang on rat blood components and organ histopathologic changes in the different environments of hyperbaric ambient air. The pharmacological effects of yukmijiwhangtang in oriental medicine have been reported to improve general condition and treat mental and physical weakness due to overload. 84 Male Sparague-Dawely rats, 200-250 g weight, were housed two per cage, fed Standard Rodent Diet with water ad libitum. The animals were assigned to 3 main groups for the blood components and gas analysis : normobaric control group (NC ; N=4), hyperbaric control group (HC ; N=8), hyperbaric medication group (HM ; N=8). HC and HM group were devided into 2 subgroups and kept on different situation of the hyperbaric ambient air (2ATA or 3ATA) for 2 hrs. HM group was administered 10cc extract of boiled yukmijiwhangtang before exposure. For histopathological analysis, hyperbaric groups(HC and HM : N=80) was further devided into 2 subgroups according to atmosphere absolute and exposure period : 2ATA (acute, 1, 2, 3, 4 wks), 3ATA (acute, 1, 2, 3, 4 wks). There were 20 groups in total, with 4 animals in each group. Experimental rats of HM group were administered 10cc extract of boiled yukmijiwhangtang 2 times per day and kept on situation of the hyperbaric ambient air (2ATA and 3ATA) 2 hrs per day for four weeks. In order to record the possible effects of yukmijiwhangtang in hyperbaric condition on the blood components, the rats were killed by decapitation directly after the hyperbaric exposure for 2 hrs. But the administered rats were killed on the morning following the last hyperbaric exposure during 4 wks. The samples were taken 2 hrs, 1, 2, 3, 4 wks after the begining of this study. Blood was collected from posterior abdominal vena cava immediately after decapitation. Organs for histopathological assays in hyperbaric groups (HC and HM) were also removed 2 hrs, 1, 2, 3, 4 wks and fixed at 10% formalin solution. The whole blood of 1㎖ was used for the analysis of pH, PO₂, PCO₂, HCO₃, BE, O₂CT, O₂SAT level by Blood Gas Autoanalyzer (Coning 175, U.S.A). And The rest whole blood of 1㎖ was utilized for the measurement of WBC (white blood cell), RBC (red blood cell), Hb (hemoglobin), Hct (hematocrit), MCV (mean corpuscular volume), MCH (mean corpuscular hemoglobin) level by Microcell Counter (Model; CC-170-TDA Co., Japan). Hematological and blood gas analysis and organ histopathological changes after exposure to hyperbaric ambient air were as follow; (1) Hematological parameters were lower in the hyperbaric medication group than all the control groups without WBC, MCV (2ATA) and MCV, MCH (3ATA). But a statistical significance among the groups was not shown. (2) The hyperbaric medication group was lower than another control groups on all parameters of blood gas analysis after 2 hours exposure to hyperbaric ambient air (2ATA and 3ATA) without O₂SAT. But a statistical significance among the groups was not shown. (3) On observing the histopathological system of the lung with microscope, the congestion, edema and hemorrhage on the alveolar sacs and alveolar wall damage in the hyperbaric control group were heavier than in the hyperbaric medication group.

티타늄 표면에 대한 배양 골수세포와 치은 섬유아세포의 생체적합성

오충영,박준봉,권영혁,이만섭 慶熙大學校 齒科大學 1995 慶熙齒大論文集 Vol.17 No.2

The purpose of this study was to evaluate the response in aspect of attachment and growth rate of osteablasts and human gingival fibroblasts to the commercially pure titanium(CP titanium) and titanium alloy(Ti-6A1-4V) that are used widely as implant materials, and to obtain the basic information to ideal implant materials. In this study, commercially pure titanium in first test group, titanium alloy(Ti-6A1-4V) in second test group, cobalt-chromemolybdenum alloy(Co-Cr-Mo alloy) in positive control group, and tissue culture polystyrene plate in negative control group were used. The results of this study were as follows. 1. Bone marrow cells cultured on CP titanium and Ti-6A1-4V showed significantly greater attachment and growth rate(p<0.05) compared to Co-Cr-Mo alloy in each time. 2. There were no significant differences(p>0.05) in attachment and growth rate of bone marrow cells cultured on GP titanium and Ti-6A1-4V or tissue culture plate. 3."Most bone marrow cells cultured on CP titanium, Ti-6A1-4V and tissue culture plate were attached well to each substratum in first 2days, and then, grew at higher growth rate. On the other hand, some cells cultured on Co-Cr-Mo alloy failed to attach in first 2 days, and then, attached cells grew at lower growth rate than other groups. 4. Attachment and growth rates of gingival fibroblasts cultured on CP titanium and Ti-6A1-4V showed no significant differences(p>0.05) compared to Co-Cr-Mo alloy in 2 days, but significantly greater increase(p<0.05) in 5 and 9 days. 5. There were no significantly differences(p>0.05) between growth rates on gingival fibroblasts cultured on CP titanium, Ti-6A1-4V and tissue culture plate in 2 and 5 days, but a significant lower growth rate(p<0.05) on CP titanium and Ti-6A.1-4V versus tissue culture plate. 6. Some gingival fibroblasts cultured on all specimen groups failed to attach, but attached cells grew well especially on CP titanium, Ti-6A1-4V and tissue culture plate. 7. There were no significant differences(p>0.05) between growth rates of both bone marrow cells and gingival fibroblasts cultured on CP titanium and Ti-6A1-4V. As a result of this study, both commercially pure titanium and Ti-6AI-4V showed excellent biocompatibility and there was no significant difference in the cellular response to the both metals. Bone marrow cells cultured on each substratum showed significantly greater growth rate and responded sensitively to cytotoxic effects of metal surfaces compared to gingival fibroblasts. Considering cell response to the substrate, it was likely that the composition itself of titanium metals have no significant effects on the biocompatibility. Further study need to be done to evaluate the influence of surface characteristics on cellular responses.

스폰서십의 광고효과에 관한 연구

오준석,노동연 龍仁大學校 體育科學硏究所 2003 體育科學硏究論叢 Vol.13 No.1

This study was performed to find information which can utilize for their marketing and advertisement strategy by defining the difference between the brand image and its loyalty of the University students in the case of 2002-2003 Anycall pro-basketball title sponsorship. To achieve this purpose, 300 University students in SeoulㆍKyunggi areas were asked to respond on the questionnaires and only 286 responses had been analyzed. The method of Cronbach'a was used to verify the validity of this questionnaire then brand image revealed .8706 and brand loyalty was marked .8845. The SPSS WIN 11.0 program had been used to analyze the data, correlation and regression techniques were applied. The findings of this study were as follows: First, the statistics showed that the brand loyalty had a significant difference about social image, sensual image and its recognition, and brand image has 39.6%(R^(2)=.396) of influence about its loyalty. Second, the attitudinal loyalty had a significant difference about social image, sensual image and its recognition, and brand image has 40.9%(R^(2)=.409) of influence about its loyalty. Third, behavioral loyalty showed a significant difference about social image, sensual image and its recognition, and brand image had 32.9%(R^(2)=.329) of influence about its loyalty.

이종마찰압접재 계면의 기계·금속조직학적 거동 및 파면특성 : STS304와 SM15C재를 중심으로 For STS304 and SM15C

오환섭,박경식,박준건,오정국,백영남 慶熙大學校 材料科學技術硏究所 1998 材料科學技術硏究論集 Vol.11 No.-

In this study is behavior of crack propagation and fracture under static tensile load, shear load, rotary bending fatigue load in friction welded dissimilar materials. Crack was observed in fine ferrite zone of SM15C and heat affected zone of STS304. Plastic flow was occured by friction welding process, so direction of crack is inclined with welded surface. Fatigue fracture most occurred in SM15C heat affected zone around interface. Fibrous zone with the view of macroscope and dimple pattern with the view of microscope were observed at fracture surface. Result is more metal micrstructure dependence than stress dependence by mechanical and metallic mechanics.

다발성 뇌수막종

박상준,박세혁,신동익,오세문 대한신경외과학회 1998 Journal of Korean neurosurgical society Vol.27 No.12

Lichtenberg Figure法에 의한 電氣絶綠材料의 開發

吳喆漢,尹文洙,李峻石 慶北大學校 1980 論文集 Vol.29 No.-

The characteristics of Lichtenberg Figures on X-ray films and electrical insulators, and their breakdown processes under positive impulse potentials were investigated using two photomultipliers and an oscilloscope. The results are follows; (1) It was found that two kinds of streamers are appeared in coplaner mode, that is air streamers and film streamers. The former travels with a speed of about 10°cm/sec while the later about 10^7cm/sec. (2) The length of film streamer is not proportional to the applied voltage but to the streamer onset voltage. The current of Lichtenberg Figure on X-ray is increased as an exponential function of the onset voltage. (3) The spark breakdown process of Lichtenberg Figure on X-ray film is similar to that of air, regarding the voltage, current and light pulse oscillograms when the spark is occurred. The spark follows a leader channel which is formed by steps after the primary type streamers were appeared several times. (4) On the surface of solid insluators, the streamer onset voltage is increased as the surface resistivity of insulator is increased. The length of Lichtenberg Figure is proportional to the relative permittivity of insulator and is inverse proportional to the thickness of insulator.