• Journal of rehabilitation welfare engineering & assistive technology
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• v.9 no.1
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• pp.17-21
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• 2015

There have been sustained developments of advanced technologies using traffic safety facilities recently and techniques for identifying failure modes and devices which could result in fatal outcomes. The purpose of this research is aimed at improving the driving conditions in advance through analyzing the IT convergence, driving education, researches for vehicles, field of construction and robotics. The researchers evaluate on usability tests of the driving with 26 candidates through focusing on safety, convenience, efficiency, effectiveness. Using specialized LED panel to enhance driving performances of disabled people are for cautious road conditions like foggy weather or heavy rain. As a result, there were improvements in the driving conditions, and candidates reported this system was helpful. It allows them for maintaining proper driving all times and was especially informative for people with low vision or visually impaired. This system plays a pivotal role as a prevention mechanism not only for regular drivers but also for further delict of traffic violations or accident offenders who already have former record on tort.

• Proceedings of the KSR Conference
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• 2007.11a
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• pp.1099-1104
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• 2007

The visual implementation of 3-dimensional national environment is focused by the requirement and importance in the fields such as, national development plan, telecommunication facility deployment plan, railway construction, construction engineering, spatial city development, safety and disaster prevention engineering. The currently used DEM system using contour lines, which embodies national geographic information based on the 2-D digital maps and facility information has limitation in implementation in reproducing the 3-D spatial city. Moreover, this method often neglects the altitude of the rail way infrastructure which has narrow width and long length. There it is needed to apply laser measurement technique in the spatial target object to obtain accuracy. Currently, the LiDAR data which combines the laser measurement skill and GPS has been introduced to obtain high resolution accuracy in the altitude measurement. In this paper, we first investigate the LiDAR based researches in advanced foreign countries, then we propose data a generation scheme and an algorithm for the optimal manage and synthesis of railway facility system in our 3-D spatial terrain information. For this object, LiDAR based height data transformed to DEM, and the realtime unification of the vector via digital image mapping and raster via exactness evaluation is transformed to make it possible to trace the model of generated 3-dimensional railway model with long distance for 3D tract model generation.

• Journal of Fisheries and Marine Sciences Education
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• v.29 no.1
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• pp.201-208
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• 2017

The major cause of the marine accidents is the collision with a moving object such as ship as well as the fixed object such as breakwater. Therefore, the most effective way to reduce the maritime ship accidents is the prevention of collision. In order to decrease the collision, it is principle that the navigation officer promptly judges the dangerous condition and makes the quick response. The ship does not allow any object or other ships approaching its surrounded area called ship area so that it prevents the collision. Generally, the ship which has high speed or poor maneuvering capability shall be managed from the distance so that the other ship does not invade its ship domains(watching distance, blocking distance). Accordingly, this study sets the navigational risk assessment model by applying ship dynamic domain and collision judgement method considered ship length, speed and navigational capability. It also reviewed the validity of the model and evaluated the perilous water way (Maenggol Channel) and a curved route near Maenggol Channel. As a result, in case of a ship with 100m in length passing Maenggol Channel, it represented "warning" level before 1.5nm to the entry, "dangerous"level 0.75nm before to it and "very dangerous" level 0.5nm before to it and then "dangerous"level again up to the entry. Applying to the curved route also showed the same results as the Narrow Channel or Maenggol Channel. This analysis highly matched with the actual navigation results. In the future, this model will be useful for coastal navigation safety chart development and safety evaluation for route or port development. It also allows to evaluate the dangerous route or the best route by applying the result into ECDIS so that it will finally help to reduce the marine accidents. Eventually the model will be effective for the marine traffic simulation evaluation forced by Maritime Traffic Safety Act.

• Geophysics and Geophysical Exploration
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• v.21 no.1
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• pp.8-14
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• 2018

For the purpose of maintenance and prevention of earth fill dams against damage from natural hazards, automatic monitoring through various measuring instruments and resistivity survey has been carried out. Reservoirs and embankments have the structural vulnerability on the agricultural usages since most of them were built more than thirty years ago. The main aim to use monitoring method is to verify the safety and integrity of the dam. Resistivity survey can detect potential weaknesses, such as defective zones, anomalous seepages or internal erosion processes. Permanent resistivity monitoring systems were installed at a reservoir, which daily measurements have been taken every 6 hour. Using monitoring data for one year, anomalous seepage and structural defects were clarified for dam safety. Annual water level fluctuations are around 10 m. During their operation, reservoir dams are subject to a never-ending hydraulic load from the reservoir, which over the years may cause changes in the properties of the inner parts of the dam construction. Detailed analysis of the monitoring results was performed and showed that resistivities at most locations have been very stable over the full monitoring period excluding the effects of water fluctuation and seasons. To investigate the detectability of weak zone using the DC resistivity monitoring, numerical modeling with a simplified model for the drainage at a reservoir dam was also performed. The results showed that the seepage zone near drainage in a reservoir dam could be detected by resistivity response change.

• Annual Conference on Human and Language Technology
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• 1994.11a
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• pp.57-63
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• 1994

인간의 정보처리 과정의 특성을 알아보기 위하여 반구별로 색채와 단어의 처리과정을 분석하였다. 단어와 색깔이라는 두가지 자극 속성이 있는 한 개의 자극에 대하여 각 자극 속성에 대한 판단과정을 반응키를 이용하여 반구별로 알아보았다. 단어에 대한 판단과 색깔에 대한 판단을 반구별로 분석한 결과, 색깔처리나 단어처리에 있어서 반구간 비대칭성은 나타나지 않았으나 색깔에 대한 판단이 단어에 대한 판단보다 신속하게 이루어지는 것으로 나타나 색채가 단어보다 기초적인 자극 속성임을 확인하였다. 단어와 색깔이라는 두가지 자극 속성을 이용한 경우에 한가지 자극속성을 처리할 때 다른 자극속성이 자동적으로 영향을 주는 것으로 나타났으나 그 정도에 있어서 반구간의 차이는 없었다. 그러나 색채가 단어처리를 간섭하는 정도가 단어가 색채처리를 간섭하는 정도보다 큰 것으로 나타나 기존의 스트룹 연구결과들과는 상반되는 결과를 얻었는데 이는 과제의 특성이라는 측면으로 기술되었다. 단어 처리에서 반구간 차이가 발견되지 않은 것은 한글의 시각적 특성과 관련지어 논의되었다. 자극의 한 속성이 자동적으로 다른 속성에 영향을 주지만 그 효과의 크기도 반구별로 차이가 없다는 것은 이전의 반구별 스트룹 효과를 알아본 연구들과 상반되는 결과이다. 따라서 자극속성이 상호영향을 줄 수 있는 좀더 일반적인 상황에서는 한 자극 속성이 다른 자극 속성의 처리에 자동적으로 영향을 주는 효과에서 반구 비대칭성이 발견되지 않으며 스트룹 효과는 두 자극 속성의 관계가 밀접한 특별한 경우에 나타나는 반구비대칭성 효과인 것으로 논의되었다.양 발생과 유의적으로 상관관계가 있었다. 본 연구의 결과는 phenol의 종류에 상관없이 식이 phenol에 조직의 항산화(산화억제)를 통해 암 예방(cancer prevention)에 영향을 미친다는 것을 제시해준다.물을 첨가하여 물내리기를 한 후 김이 오른 후 물내린 쌀가루에 15% 이상의 설탕을 첨가하여 20분간 쪄서 만든 백설기가 가장 바람직하다는 것을 알 수 있었다. 이 실험 중 가장 중요한 조건은 첨가하는 물의 양이 10%이며 첨가하는 당이 설탕일 경우는 김이 오른 후 설탕을 섞어 바로 쪄야 하며 설탕의 양이 15% 이상이라는 것이다. 이 조건은 대체적으로 hardness, adhesiveness, gumminess가 큰 수치를 나타낸다.순구조의 Tonpilz형 초음파 변환기와 비교하여 비록 송파전압감도에 있어서는 약 5 dB 정도의 음향출력의 손실이 불가피하지만, 그 대신 주파수 대역폭을 약 5 재 정도 확대시킬 수 있는 장점이 있기 때문에 이 넓은 주파수 대역을 효과적으로 활용하면 어종식별을 위한 음향산란신호를 정량적으로 수집 및 평가하는 것이 가능하다고 판단된다.n A was 11 ug.이, 0.9 ug/g and 3.7 ug/g in the blood, liver and kidney, respectively.sional-managerial who secure the higher autonomy and stability in their work have the highest life chance in the labor and health, and leisure life

• Journal of Ginseng Research
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• v.42 no.1
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• pp.81-89
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• 2018

Background: BIOGF1K, a compound-K-rich fraction, has been shown to display anti-inflammatory activity. Although Panax ginseng is widely used for the prevention of photoaging events induced by UVB irradiation, the effect of BIOGF1K on photoaging has not yet been examined. In this study, we investigated the effects of BIOGF1K on UVB-induced photoaging events. Methods: We analyzed the ability of BIOGF1K to prevent UVB-induced apoptosis, enhance matrix metalloproteinase (MMP) expression, upregulate anti-inflammatory activity, reduce sirtuin 1 expression, and melanin production using reverse transcription-polymerase chain reaction, melanin content assay, tyrosinase assay, and flow cytometry. We also evaluated the effects of BIOGF1K on the activator protein-1 signaling pathway, which plays an important role in photoaging, by immunoblot analysis and luciferase reporter gene assays. Results: Treatment of UVB-irradiated NIH3T3 fibroblasts with BIOGF1K prevented UVB-induced cell death, inhibited apoptosis, suppressed morphological changes, reduced melanin secretion, restored the levels of type I procollagen and sirtuin 1, and prevented mRNA upregulation of MMP-1, MMP-2, and cyclo-oxygenase-2; these effects all occurred in a dose-dependent manner. In addition, BIOGF1K markedly reduced activator-protein-1-mediated luciferase activity and decreased the activity of mitogen-activated protein kinases (extracellular response kinase, p38, and C-Jun N-terminal kinase). Conclusion: Our results strongly suggest that BIOGF1K has anti-photoaging activity and that BIOGF1K could be used in anti-aging cosmeceutical preparations.

• Journal of Korean society of Dental Hygiene
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• v.9 no.4
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• pp.849-863
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• 2009

Objectives : This study was to study dental hygiene department students' management of infection and their attitude toward infection. Methods : This study was conducted from August 24, 2009 to September 20, 2009. 269 sophomore and junior college students enrolled in the department of dental hygiene from schools located in Gyeonggi-do and Gangwon-do participated in the study. A self-administered questionnaire survey was conducted. Results : 1. As for dental hygiene department students' recognition of the causes of infectious diseases, 80.7% of the respondents said hepatitis B was the infectious disease highly likely to occur in laboratories. 35.3% was correct about the antecedent variables of infection in the workshop, 24.9% about the oral symptoms of HIV and 18.6% about the diseases induced by HBV. The recognition rates were generally low. 2. About whether the respondents ask patients questions about infectious diseases, 80.7% of them answered Yes, but only 56.2% of them said they do so every time, and 17.8% of them said they never do so. 3. As far as washing hands to prevent infectious diseases is concerned, 97.4% of the respondents said hand washing helps prevent infection. 72.5% of them said they wash their hands every time before they practice on a patient, while 84.0% of them said they washed their hands after the lab practice. 90.7% said they use liquid soap containing anti-microbial agents, and 81.8% of them said they use paper towels. 4. With regard to protective gear for prevention of infectious diseases, 98.9% of the respondents said it is desirable to use disposable protective gear for each patient. When it comes to what they actually used as protective gear, 91.1% said aprons, 89.2% gloves, and 87.7% masks. However, a low percentage of the respondents actually use goggles and replace masks when they got damp, 11.2% and 24.2% respectively. Conclusions : As for treating the surface of equipments to prevent infectious diseases, most of the respondents exhibited a high recognition rate. Relative fewer respondents actually treat the surface of equipments than those respondents who are aware of the need to do so. A high percentage of the respondents also said they use alcohol sponge to treat the surface of each equipment in order to prevent infectious diseases.

• Journal of Korean society of Dental Hygiene
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• v.9 no.4
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• pp.593-605
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• 2009

Objectives : In an aging society, as the necessity of the elderly oral health care was increased, the oral health dimensions was a lot more visible important to a community public health service for the quality of life improvement. In oral health care of the elderly, the periodic scaling treatment was required to manage periodontal tissue care. Methods : So, the 319 elderly people were selected by a random sampling method, those who are visitors of 5 public health centers in the South Jeolla Province. based on the findings of personal interview questionnaires and oral health states from these elderly subjects, we made a comparative analysis of oral health states of the elderly scaling program subjects. Results : 1. Among the participants, 52.4% of the elderly benefited from scaling care project otherwise 47.6%, the subjects with periodontal diseases were 78.4%, whereas 21.6% of the ones who don't. 2. In regard to perceptions of oral cavity abnormal symptoms, findings revealed that the teeth smart sensation with something cold was 'yes' 62.7%, 'No' 37.3%, gingival bleeding was 'yes' 61.4%, 'No' 38.6%, oral odor(halitosis) was 'yes' 63.3%, 'No' 36.7%, and dried mouth was 'yes' 63.3%, 'No' 36.7%. 3. The study data showed 73.2% of periodontal disease subjects, and 24.6% of no periodontal diseases responded that they have hyperesthesia and 67.6% of periodontal diseases, 39.1% no periodontal diseases responded that they have gingival bleeding. 4. In comparison of the presence of periodontal disease with scaling service program state, it is show that the elderly scaling service program was significant statistically in Elderly's periodontal disease prevention. according to analysis, 52.4% of the subjects with and 34.8% of no periodontal diseases received the Elderly scaling service program(p<0.05). Conclusions : Therefore, oral health care of the elderly, a community public health service the periodic scaling treatment was required to manage periodontal tissue care.

• Journal of Korean society of Dental Hygiene
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• v.15 no.4
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• pp.705-711
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• 2015

Objectives: The purpose of the study is to evaluate the effect of continuing dental care program by elementary school dental clinic in Gimcheon from 2008 to 2013. Methods: The subjects were experimental group of 152 students from three elementary schools having dental clinics and control group of 136 students from three elementary schools of no dental clinics. The six dentists in Gimcheon community health center carried out the regular dental checkups in the elementary schools and four dental hygienists recorded the dental examination results. After receiving WHO dental survey guideline education, the examiners used dental mirror and dental probe under the natural light. The contents of the survey included dental caries in the deciduous and permanent teeth, malocclusion, remaining ratio of sealant, treatment, and follow up. Results: DFT index by grade showed that 3.71 in experimental group and 4.56 in control group and it was remarkable in the 3rd grade. Thus. DFT index in the experimental group was lower than that of control group (p<0.05). DT index by grade was 0.63 in experimental group and 1.28 in control group marked in the 6th grade. DT index in the control group was higher than that of the experimental group (p<0,001). DFT index and DMFT Index by grade showed no significant difference between the control group and the experimental group. DFT and DMFT Index of the control group in the 3rd and 6th grade were lower score than those of experimental group. DFT and DMFT index in the third and 6th grade showed no significant difference between the control group and the experimental group. The remaining ratio of the sealant was 4.89 experimental group in the 6th grade. The remaining ratio of the sealant in the experimental group was higher than that in the control group. Conclusions: The continuing dental care program in the elementary school is very effective method in the treatment of oral disease in the elementary school children. The oral health care and prevention for the elementary school children should be implemented and carried out continuously.

• Journal of the Society of Disaster Information
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• v.10 no.4
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• pp.572-582
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• 2014

Fire-stations' works limited to the existing fire protection rescue and emergency services in rapidly changing disaster environment are not difficult to deal with the fire service demand of the people any longer. In this study, after calculating the importance of the disaster management about fire-stations' works by disaster management steps thorough a survey of experts about Fire and Disaster, firefighting tasks are to be redesigned. Experts have the higher rating in preparation step of firefighting tasks. Because securing resources and building systems in preparation step and safety training in prevention step have a high importance, it is required to improve efficiency of firefighting tasks through redesign. The most important point in redesign is to realize fire-stations' works are to expand and to develop such a policy if fire-offices excavate the civil and government cooperation works and provide such legal and institutional basis of establishment and operation. And it should be sought to maintain international cooperation for international disaster response. Ultimately, fire-offices will have further expansion in quality and simultaneously quantitatively by excavating 'collaboration (business cooperation)' or enhancing existing works in addition to existing 'fire and rescue, first aid' business.