• 한국소음진동공학회논문집
• /
• 제23권12호
• /
• pp.1045-1055
• /
• 2013

It is true that the dependency on import is currently high in case of the safety checkup system of domestic airplanes, and it is at the point of time that localization of HUMS for small airplanes is required. In this study, the design factors were selected for the lightweight of HUMS for small airplanes by using Pro-Engineer which is a design tool and Abaqus. 9 models were made through experiment plans with Taguchi method for this, and the each model for weight lightening was selected through vibration analysis and shock analysis while in operation with experiment profile values. After fabricating HUMS, it was verified that as a result of experiment with the same profile values as the analysis, there was similarity between the analyzed values and values of the experiment. As a result of performing weight lightening which is the purpose of the study, electronic performance for small airplanes is assured and a design plan reducing 15 % weight compared to the targeted weight was deduced. Besides, it could be verified that the light weight model satisfied the maximum allowable displacement value of PCB[printed circuit board] and accordingly satisfied electronic properties of HUMS. In this study, the reliability of a product was certified through the result of an experiment on ground. If the reliability of HUMS were verified through a test flight in the future, it is considered that it would make a big contribution to localization of aerospace electronic equipment.

• Radiation Oncology Journal
• /
• 제11권1호
• /
• pp.167-174
• /
• 1993

Recently, stereotactic radiosurgery plan is required with the information of 3-D image and dose distribution. A project has been doing if developing LINAC based stereotactic radiosurgery since April 1991. The purpose of this research is to develop 3-D radiosurgery planning system using personal computer. The procedure of this research is based on two steps. The first step is to develop 3-D localization system, which input the image information of the patient, coordinate transformation, the position and shape of target, and patient contour into computer system using CT image and stereotactic frame. The second step is to develop 3-D dose planning system, which compute dose distribution on image plane, display on high resolution monitor both isodose distribution and patient image simultaneously and develop menu-driven planning system. This prototype of radiosurgery planning system was applied recently for several clinical cases. It was shown that our planning system is fast, accurate and efficient while making it possible to handle various kinds of image modalities such as angiography, CT and MRI. It makes it possible to develop general 3-D planning system using beam's eye view or CT simulation in radiation therapy in future.

• 한국건설관리학회논문집
• /
• 제11권1호
• /
• pp.59-69
• /
• 2010

해외건설이 국가수출에 중추적인 역할을 하는 산업으로서 기여하고 있음에도 불구하고 그 간 해외건설 진출전략에 관한 연구는 단편적인 동향이나 활성화 제언을 제시하는데 초점이 모아졌다. 금융위기와 같은 시장 불확실성에 대비하고 중장기 진출 전략을 세우기 위해서는 이러한 제언적 연구나 프로젝트단위의 연구보다는 제조업처럼 기업단위의 연구를 통해 실효성 있는 해외진출 전략을 모색하는 것이 필요하다. 본 연구에서는 1993년부터 2007년까지 31개의 기업이 수행한 1,920개의 해외수주 프로젝트를 기업별로 분석하여 9개의 전략지수를 산정하고 4개의 재무지표를 조사하여 주요 기간별(아시아시장 도약기, IMF 조정기, 재도약기)로 기업의 수주성과를 다중회귀분석을 통하여 분석하였다. 또한 주요 전략지수와 재무지표의 각 시기별 증감이 기업의 해외수주량 증감과 어떤 상관관계가 있는지를 살펴보기 위해 동태적인 분석을 추가하였다. 그 결과 건설기업의 지역다각화, 공종다각화, 현지화, 부채비율 감소는 어느 시기에나 중장기적으로 해외수주량을 증가시키는 중요한 전략으로 평가되었으며, 국내기업간 공동진출비중, 선진기업 제휴비중, 현지기업 제휴비중, 인건비 비중, 관리비 비중의 증감은 시대에 따라 다르게 평가되었다. 본 연구의 성과는 해외건설진출 기업들에게 구체적이고 근거 있는 진출전략을 수립하고 해외시장진출 리스크를 관리하는데 유익하게 활용될 수 있을 것으로 기대된다.

• 한국식생활문화학회지
• /
• 제22권6호
• /
• pp.690-695
• /
• 2007

This research aimed to Kimchi to be well known in the World, which to be international food on the each nation and each people, each religion cultural area, with having done Kimchi adaptation plan for localization. Among the plan, Kimchi utilization ways with the localization strategy in Turkish dietary life were investigated to the Kimchi preference, improvement points on Turkish view, for the Turkey person it would be able to apply in Turkish food culture, and the results are as follows. 1. According to sex of Chinese cabbage Kimchi preference, men ($M=3.75\;{\pm}\;0.89$) appeared higher than women ($M=3.62\;{\pm}\;0.88$). Color or appearance preference after Chinese cabbage Kimchi taste was investigated in order that red > burnish felt > transparent > yellow, and the smell preference which was hot($M=4.64\;{\pm}\;1.37$) appeared highest. A hot taste felt most intensely, and it was investigated in order that aftertaste> salty taste > sourness > off flavor taste > fermented fish source taste > sweetness> carbonic acid by the followings. For the feeling of texture of Kimchi, the crunch was higher than durable tough(it was visible the consider difference of the sex 2. That the Korean Kimchi hit to a palatable taste, against 109 people (72.2%) answered suitable appetite to this taste, and the reason which was in order of that hot tasty > appearance > chewing texture > red > fermented flavor was investigated. Did not hit to a taste 42 people (27.8%) answer back, with the reason that was investigated in order of hot tasty > appearance > red > fermented flavor > chewing texture. The hot tasty of Kimchi was commonly presented that hit and did not hit to appetite taste against people. 3. Among the Turkish food, similar foods for Kimchi were answered in order of Lahana Tursu (44.2 %) > Kapuska (25.9 %) > Lahana Prasa (11.1%), and similar food category were that Chinese cabbage or various vegetables to be pickling food and to be dressing salad with salt and vinegar. The accompanied or garnished Turkich food category for Kimchi were answered in order of cooking meat (34.1%)> steamed cooking rice (22.7%)> cooking fish (17.0%)> cooking soybean (14.2%). This result was same tendency with steamed cooking rice accompaniment for Kimchi in Korea and Turkey, and could be applied a new main menu like meat cooking and fish cooking dish which matched and accompanied with Kimchi.

• Tuberculosis and Respiratory Diseases
• /
• 제49권3호
• /
• pp.353-364
• /
• 2000

연구배경 : 객혈은 임상에서 흔한 증상의 하나인데, 기관지경검사는 객혈에서 진단이나 출혈부위와 확인, 그리고 치료에서 유용하게 사용된다. 그러나 기관지경검사의 적절한 시행시기 및 적응증에 대해서는 논란이 있다. 방법 : 객혈에서 기관지경검사의 적절한 시행시기를 결정하기 위해서, 객혈환자 118명의 의무기록을 후향적으로 분석하여 단순 흉부 X-선 소견, 출혈 양 및 출혈 지속기간과 기관지경검사의 시행시기와의 관계를 알아 보았다. 결과 : 1. 객혈의 원인은 활동성 폐결핵(34명, 28.8%), 비활동성 폐결핵(12명, 10.2%), 기관지확장증(20명, 17.0%), 폐암(9명, 7.6%), 폐국균종(9명, 7.6%), 그리고 기타가 10명(8.5%)이었고, 원인을 알수 없었던 경우가 24명(20.3%)이었다. 2. 출혈병소의 발견율은 기관지경검사를 일찍 시행 할수록 증가하였는데(p<0.05) 기관지경검사를 출혈 도중에 시행한 경우에는 24명의 환자중 21명(87.5%), 지혈된 후 24시간 이내에는 12명중 5명(41.7%), 그 후에 시행한 경우는 82명중 33명(40.2%)에서 출혈병소가 확인되었다. 3. 출혈병소의 발견율은 흉부사진 상 국소적이든 비국소적이든 병변이 보였던 경우에 더 높았다(p<0.05). 단순 흉부 X-선 소견에 관계없이 모든 경우에서 출혈 도중에 기관지경검사를 시행하면 출혈병소의 발견율은 증가하였다(p<0.05). 단순 흉부 X-선상 정상이거나 비국소적인 병변을 보이는 경우에는 출혈 도중이나 지혈 후 48시간 이내에 기관지경검사(조기 기관지경검사)를 시행했을 때 진단율은 증가하였다(p<0.05). 4. 기관지경에 의한 출혈병소의 발견율은 출혈 양이 많을수록 증가하였다(p<0.05). 비슷한 정도의 출혈 양을 보이는 경우에 기관지경검사를 조기에 시행하면 진단율이 증가하는 경향을 보였으나 통계적으로 유의 하지는 않았다(p>0.05). 5. 출혈병소의 발견율은 객혈의 지속기간과는 관계가 없었다(p<0.05). 그러나 객혈의 지속기간이 1주 미만이었던 경우 출혈 도중에 기관지경검사를 했을 때 증가하였다(p<0.05). 객혈의 지속기간이 1주 혹은 그 이상이면 기관지경검사의 시행시기에 따른 발견율의 차이가 없었다(p>0.05). 6. 조기 기관지경검사로 4명의 환자에서 정확한 출혈부위를 확인하여 폐절제술의 수술 부위를 결정하였으며, 1명에서는 기관지경을 통한 트롬빈 주입으로 객혈이 성공적으로 지혈되었다. 결론 : 객혈에서 굴곡성 기관지경검사는 출혈부위를 확인하는데 유용할 뿐만 아니라 치료방침을 결정하는 데에도 도움이 되며, 기관지경검사는 출현도중이나 지혈 후 48시간 이내에 조기에 시행하는 것이 바람직하다.

• Radiation Oncology Journal
• /
• 제1권1호
• /
• pp.47-53
• /
• 1983

CT scans obtained on 15 patients of head and neck malignant tumors were evaluated for their utility in ratiotherapy treatment planning. To evaluate the advantage of incorporating CT scans in radiotherapy treatment planning of head and neck malignant tumors, the dose distributions of treatment plan with and without CT scan were compared in 15 patients. And then the dose distributions of the first and second treatment plan were compared. 1. Tumor extend and localization were clearly delineated on CT scan in 12 of 15 cases (80%), suggestive in 2 (13.3%), and not seen in only one (6.7%) which had been in the postoperative state. 2. Tumor coverage after CT scan was adequate in 14 of 15 cases (93.3%) and not in only one. In one case of inadequate tumor coverage the target volume lay inside the field but reached within 0.5cm of the field margin (marginal miss). 3. The volume of normal tissue irradiated was reduced after CT scan in 12 of 15 cases (80%), increased in 1 (6.7%) and not changed in 2 (13.3%). 4. We could maximize the local control of disease and minimize unnecessary morbidity by delineating the location and extent of tumor and normal tissue with CT for treatment plannings.

• 농촌의학ㆍ지역보건
• /
• 제23권2호
• /
• pp.215-227
• /
• 1998

To find health problems of Pohang city and to plan the activities to solve them in the situation of localization, the mortalities of the citizens in recent three years from 1994 to 1996 were analyzed from the notices and the certificates of death. The ratios of the notices with the certificates of death In the rural area of Pohang city were higher than those of whole country, the ratios of the urban area were lower than the respective ones, and the ratio differences between the rural and urban area were increasing. It may be that medical facilities are not within easy access of the rural inhabitants. especially in the rural south district with high population density. The proportional mortality indicators(PMI) were lower them those of whole country, much lower in male. So the health status of young aged males is relatively unsatisfactory. The urban inhabitants died in hospitals about two times more than the rural inhabitants and the differences were increasing. It may be that living and housing conditions and socio-cultural differences affected on the places of death. Because it is thought that death in hospitals will be growing at high speed, it is necessary to enlarge facilities fur funeral services. The age standardized mortalities were lower than those of whole country and age grouped mortalities were also the same. There were not any consistent and meaningful findings in the sex ratios of mortality according to the age groups or the calendar years. The mortalities by neoplasms and cardiovascular diseases according to the twenty one major causes of death were rapidly increased from the middle ages in both male and female. So it is important to plan the activities for early detection and health maintenance or promotion by behavior modifications. The leading causes of death were cardiovascular diseases, hypertensive diseases, and traffic accidents. And accidental drowning because of coastal area, liver diseases in male, and low respiratory tract diseases in female were the leading causes of death in part of age groups.

• 한국의학물리학회지:의학물리
• /
• 제1권1호
• /
• pp.23-29
• /
• 1990

In order to explane the stereotactic procedure, the three steps of the procedure (target localization, dose planning, and radiation treatment) must be examined separately. The ultimate accuracy of the full procedure is dependent on each of these steps and on the consistancy of the approach The concern in this article was about dose planning, which is a important factor to the success of radiation treatment. The major factor in dose planning is a dosimetry system to evaluate the dose delivered to the target and normal tissues in the patient, while it generates an optimal dose distribution that will satisfy a set of clinical criteria for the patient. A three-dimensional treatment planning program is a prerequisite for treatment plan optimization. It must cover 3-D methods for representing the patient, the dose distributions, and beam settings. The major problems and possible modelings about 3-D factors and optimization technique were discussed to simplify and solve the problems associatied with 3-D optimization, with relative ease and efficiency. These modification can simplify the optimization problem while saving time, and can be used to develop reference dose planning system to prepare standard guideline for the selection of optimum beam parameters, such as the target position, collimator size, arc spacing, the variation in arc length and weight. The method yields good results which can then be simulated and tailored to the individual case. The procedure needed for dose planning in stereotactic radiosurgery is shown in figure 1.

• Journal of Construction Engineering and Project Management
• /
• 제6권2호
• /
• pp.30-39
• /
• 2016

This research presents the development of a self-governing mobile robot navigation system for indoor construction applications. This self-governing robot navigation system integrated robot control units, various positioning techniques including a dead-reckoning system, a UWB platform and motion sensors, with a BIM path planner solution. Various algorithms and error correction methods have been tested for all the employed sensors and other components to improve the positioning and navigation capability of the system. The research demonstrated that the path planner utilizing a BIM model as a navigation site map could effectively extract an efficient path for the robot, and could be executed in a real-time application for construction environments. Several navigation strategies with a mobile robot were tested with various combinations of localization sensors including wheel encoders, sonar/infrared/thermal proximity sensors, motion sensors, a digital compass, and UWB. The system successfully demonstrated the ability to plan an efficient path for robot's movement and properly navigate through the planned path to reach the specified destination in a complex indoor construction site. The findings can be adopted to several potential construction or manufacturing applications such as robotic material delivery, inspection, and onsite security.

• 한국임상수의학회지
• /
• 제27권4호
• /
• pp.474-482
• /
• 2010

Hepatocellular carcinoma (HCC) is a primary hepatic neoplasms in dogs. Three types of HCC such as massive, nodular and diffuse form were reported. Massive HCC is most common and has relatively better prognosis than other forms because this type of HCC can be removed surgically and has low frequency of relapse or metastasis. Diagnostic image can provide useful information for shape and internal structure of the hepatic mass as well as the location and adhesion or invasiveness of the mass to establish surgical plan to remove the mass safely. In this study, we investigated diagnostic features of massive HCC in 5 dogs. Radiography showed soft tissue mass in cranial abdomen in 3 dogs. On ultrasonography, all dogs had a solitary hepatic mass with mixed echo pattern with anechoic cysts, which represented necrosis and hemorrhage. The radiographic and ultrasonographic findings of affected hepatic lobe were compared with the macroscopic findings through laparotomy. Computed tomography was performed to check metastasis and figure out the origin of the mass in two dogs. Ultrasonography is useful and relatively sensitive examination for diagnosis and planning for surgery in canine massive HCC.