• Nuclear Engineering and Technology
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• 제55권6호
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• pp.2018-2025
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• 2023

In our previous study, we proposed an integrated PG-PET-based imaging method to increase the prediction accuracy for patient dose distributions. The purpose of the present study is to experimentally validate the feasibility of the PG-PET system. Based on the detector geometry optimized in the previous study, we constructed a dual-head PG-PET system consisting of a 16 × 16 GAGG scintillator and KETEK SiPM arrays, BaSO₄ reflectors, and an 8 × 8 parallel-hole tungsten collimator. The performance of this system as equipped with a proof of principle, we measured the PG and positron emission (PE) distributions from a 3 × 6 × 10 cm³ PMMA phantom for a 45 MeV proton beam. The measured depth was about 17 mm and the expected depth was 16 mm in the computation simulation under the same conditions as the measurements. In the comparison result, we can find a 1 mm difference between computation simulation and measurement. In this study, our results show the feasibility of the PG-PET system for in-vivo range verification. However, further study should be followed with the consideration of the typical measurement conditions in the clinic application.

• 대한소아치과학회지
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• 제42권1호
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• pp.38-44
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• 2015

어린이는 쉽게 넘어지거나 부딪혀 구강안면부의 손상을 흔히 경험하며, 응급치료를 필요로 한다. 이러한 환자들에서는 공포와 불안으로 인해 협조도가 불량해지게 된다. 케타민은 일반 응급실에서 어린 환자의 치료와 검사를 위한 진정제로 잘 알려져 있다. 본 연구에서는 원주 세브란스 기독병원 응급실에서 케타민을 이용한 진정법을 시행한 현황에 대해 알아보았다. 2010년 1월에서 2014년 5월까지 치과적 응급처치를 위해 의뢰된 만 18세 이하의 환자들의 기록이 수집되었으며, 연령, 성별, 시행된 치과적 치료, 케타민 진정법 시행 여부에 대한 자료를 분석하였다. 총 659명의 소아 환자가 치과적 응급처치를 필요로 하였으며, 이중 118명이 케타민 진정법이 시행되었다. 조사 결과 열상의 봉합을 시행한 환자에서 진정법이 더 많이 시행되었고, 연령이 어릴수록 진정법이 시행되었던 상관성이 확인되었다. 케타민 진정법은 치과의사 단독으로 사용하지 않아야 하지만, 응급실에서 1차 진료를 담당하는 치과의사는 케타민 진정법이 적용된 환자들을 쉽게 접할 수 있다. 따라서, 응급실에서 근무하는 치과의사는 케타민의 임상적 효과, 고려사항, 그리고 발생 가능한 합병증 및 대처 방안에 대해 숙지하고 있어야 할 것으로 사료된다.

• 기본간호학회지
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• 제23권1호
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• pp.12-20
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• 2016

Purpose: This study was done to examine the effects of lidocaine patch application to decrease pain and fear during blood sugar testing in elderly patients with DM. Methods: The participants were 56 elderly patients admitted to J geriatric hospital in G city, Korea. Of the elderly patient, 27 were assigned to the experimental group and 29 to the control group. Participants in the experimental group applied a lidocaine patch on the fingertip for 30 minutes before a blood sugar test. The control group applied a plaster on the fingertip. Pain was evaluated using a visual analogue scale and fear using the Procedure Behaviour Check List. The results were compared using paired t-test and t-test. Results: The scores for pain and fear were significantly lower in the experimental group compared to the control group. Conclusion: The lidocaine patch was found to be an effective local anesthetic to relieve pain and fear during blood sugar test in elderly patients with DM without any severe adverse events.

• 기독교교육논총
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• 제71권
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• pp.121-154
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• 2022

본 연구의 목적은 청년 시기의 주요 발달과제인 관계성 형성 및 향상을 위해 청년기와 관계성에 대해 발달심리학적, 대학교육, 신앙 및 영성적 측면에서 정리하고, 기독 청년교육 방안을 교육의 요소별로 제시하고자 함이다. 관계성은 다른 사람과 공동체에 연결되어 있으며, 서로 관심을 주고 받는다는 느낌을 가지며, 유대감과 소속감을 느끼며, 안정적이고 만족스러운 관계를 유지하고 있을 때 형성되는 것이다. 이는 기술 또는 기교가 아니라 삶의 태도와 가치와 관련된 것으로 지속적인 배움과 훈련이 필요하다. 청년기의 여러 발달과제들은 관계적인 측면에서 공통점을 가지고 있다. 관계성은 청년 초기 대학생활의 만족도, 대학생활 적응, 인성, 진로결정 등의 청년의 삶에 긍정적인 영향을 끼친다. 인간의 실존과 신앙은 관계를 통해 규정되고 형성되기 때문에 신앙적인 측면에서도 관계는 매우 중요하다. 삶의 의미와 내면적인 성장을 위한 영성 발달도 공동체와 타인과의 관계가 중요하게 작용한다. 학습자 및 교육환경 측면에서 관계에 대한 욕구를 가진 학습자 이해, 관계성 욕구 충족에 있어서 방해요인을 이해하기 위해 그들이 살아가고 있는 세대 이해, 그리고 청년들의 관계성이 일어나는 교육환경에 대한 이해가 필요함을 제안하였다. 교사 측면에서는 촉진자, 안내자, 관리자, 멘토 등의 역할로의 변화를 제안하였다. 교육목적 및 내용 측면에서는 관계를 위한 가르침이 궁극적 목적이 되어야 하고, 이를 위한 교육내용을 세 가지 관계의 유형과 각 유형에서 다루어야 할 주요 내용을 제시하였다. 교육방법 측면에서는 상호작용을 일으키기 위한 소통과 학습자의 적극적인 참여를 유도하는 학습자 중심의 집단학습 방법을 관계의 내용과 인지적, 정서적, 행위적 차원에 따라, 다른 교육의 요소들을 고려하여 선정할 것을 제안하였다. 교육의 결과 및 평가 측면에서는 교육계획 단계 시 고려했던 것들이 실제 교육에 효과적으로 수행되었는지 확인, 다양한 평가 방법과 다각적인 측면의 평가, 평가 결과의 구체적 적용을 위한 정리를 제안하였다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2004년도 ICCAS
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• pp.1061-1066
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• 2004

It is certain that the future manufacturing environment will be network-centric and spatially distributed based on Internet. Today, wide variety of distributed computing and communication technologies are available for implementing a system for product data exchange and sharing. One of the technologies that have been received most attentions for product data exchange and sharing is Product Data Management (PDM). PDM tries to integrate and manage process of data and technical documents that are connected to physical product components. In accordance to previous researches about PDM, it can be regarded as an integration tool of many different areas, which ensures that the right information is available to the right person at the right time and in the right form throughout the enterprise. PDM with Web-enabled CAD system is proposed in this paper in order to acknowledge the usefulness of the system mentioned. The system will use Web service on Visual Studio C#.Net to invoke the web application system.

• 대한물리치료과학회지
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• 제6권4호
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• pp.153-165
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• 1999

The transcranial Doppler(TCD) is a technique for measuring blood flow velocity of intracranial and extarcranial arteries. This examination based on Doppler effect which was first formulated in 1842 by the Austrian physicist Christian Doppler. In 1982, Rune Aaslid first maked 2MHz pulsed probe and recording intracranial vessels with transcranially. There are six criteria utilized in gaining positive identification of the intracranial vessels. The six criteria are as follows l)acoustical windows 2)depth of sample volume 3)direction of flow 4)spatial relationship of ACA and MCA bifurcation 5)mean velocity and 6)response common carotid artery compression and/or oscillation test. The affected factors for TCD examination are angle of insonation, posture of subject, age, gender, hematocrit, metabolic factors, and cardiac output. Clinical application of TCD are detection of stenosis, occlusion, emboli, thrombsis in intracranial and extracranial arteries and evaluation of cerebral arterovenous malformation, collateral capacity in the circle of Willis, ischemia cerebrovascular disease, stroke patient and vertebrobasilar system.

• Wind and Structures
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• 제25권6호
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• pp.589-608
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• 2017

A novel probabilistic approach is presented for estimating the equivalent static wind loads that produce a static response of the structure, which is "equivalent" in a probabilistic sense, to the extreme dynamic responses due to the unsteady pressure random field induced by the wind. This approach has especially been developed for complex structures (such as stadium roofs) for which the unsteady pressure field is measured in a boundary layer wind tunnel with a turbulent incident flow. The proposed method deals with the non-Gaussian nature of the unsteady pressure random field and presents a model that yields a good representation of both the quasi-static part and the dynamical part of the structural responses. The proposed approach is experimentally validated with a relatively simple application and is then applied to a stadium roof structure for which experimental measurements of unsteady pressures have been performed in boundary layer wind tunnel.

• Structural Engineering and Mechanics
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• 제21권3호
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• pp.315-332
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• 2005

The Element-free Galerkin Method has become a very popular tool for the simulation of mechanical problems with moving boundaries. The internally applied Moving Least Squares interpolation uses in general Gaussian or cubic weighting functions and has compact support. Due to the approximative character of this interpolation the obtained shape functions do not fulfill the interpolation conditions, which causes additional numerical effort for the application of the boundary conditions. In this paper a new weighting function is presented, which was designed for meshless shape functions to fulfill these essential conditions with very high accuracy without any additional effort. Furthermore this interpolation gives much more stable results for varying size of the influence radius and for strongly distorted nodal arrangements than existing weighting function types.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제11권3호
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• pp.209-218
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• 2007

The purpose of this study is to create an interactive tool Geometry Player for geometric explorations. In designing this software, we referred to van Hiele's geometric learning theory of and Duval's cognitive comprehension theory of geometric figures. With Geometry Player, it is easy to construct and manipulate dynamic geometric figures. Teachers can easily present the dynamic process of geometric figures in class, and students can use it as a leaning tool to construct geometric concepts by themselves. It is hoped that Geometry Player can be a useful assistant for teachers and a nice partner for students. A brief introduction to Geometry Player and some application examples are included in this paper.

• Journal of Ginseng Research
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• 제34권3호
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• pp.155-159
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• 2010

In the present review, the merit of ginseng in the improvement of insulin resistance has been introduced. Using the results in previous studies, we found that ginseng or ginsenoside Rh2 has the ability to reduce glucose-insulin index in rats with insulin resistance. Insulin resistance was induced by feeding of fructose-rich chow in rats. Insulin resistance was characterized by regular methods. Effectiveness of ginseng powder or extract Rh2 was identified in this animal model. Also, the application of ginseng for handling of diabetic disorders in China has been discussed. According to Chinese traditional medicine, ginseng is merit in the treatment of diabetic disorders named as Shiaw-Ker in Chinese. Therefore, it is no doubt that ginseng is helpful in the control of diabetic disorders either prevention or the treatment. Otherwise, the potential effect of ginseng on nervous functions shall be investigated in the future.