• 대한의용생체공학회:의공학회지
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• 제35권3호
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• pp.50-54
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• 2014

It is being tried to control robot arm using brain signal in the field of brain-machine interface (BMI). This study is focused on applying guidance laws for efficient robot arm control using 3D coordinates obtained from Magnetoencephalography (MEG) signal which represents movement of upper limb. The 3D coordinates obtained from brain signal is inappropriate to be used directly because of the spatial difference between human upper limb and robot arm's end-effector. The spatial difference makes the robot arm to be controlled from a third-person point of view with assist of visual feedback. To resolve this inconvenience, guidance laws which are frequently used for tactical ballistic missile are applied. It could be applied for the users to control robot arm from a first-person point of view which is expected to be more comfortable. The algorithm which enables robot arm to trace MEG signal is provided in this study. The algorithm is simulated and applied to 6-DOF robot arm for verification. The result was satisfactory and demonstrated a possibility in decreasing the training period and increasing the rate of success for certain tasks such as gripping object.

• 한국과학교육학회지
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• 제43권2호
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• pp.151-166
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• 2023

이 연구에서는 학제간 융합 연구를 수행해본 경험을 가진 과학기술 연구자들이 학제간 협업에 대하여 어떠한 인식을 가지고 있으며 협업과정에서 경험하는 어려움 및 그 어려움을 극복하고자 세우는 전략들에는 어떠한 유형이 있는지 확인하고자 하였다. 이를 위하여 학제간 협업에 대한 태도를 확인하는 5점 리커트 척도 문항들과 협업 경험에서 겪는 어려움 및 어려움 극복전략에 관해 서술하는 개방형 문항들이 혼합된 형태의 설문지를 개발하여 국내 과학기술 연구자 79명에게 투입한 후 자료를 수집하였으며 수집한 자료는 양적·질적으로 분석되었다. 연구결과, 과학기술 연구자들의 협업 태도 하위구인 중 협업의 효능감 인식이 협업의 의도에 중요한 영향을 미치는 것으로 확인되었으나 협업의 효능감 대한 연구참여자들의 인식 수준은 비교적 낮은 것으로 나타났다. 또한 학제간 협업과정에서 겪는 어려움은 4가지 유형(가치지향 상충, 사고방식 차이, 용어나 개념 차이, 상대분야에 대한 편견과 상호 몰이해)으로 나타났으며 이를 극복하기 위한 전략은 7가지 유형(협상과 타협을 통한 상호 양보, 공통의 언어나 매개물의 설정과 유지, 명확한 역할의 분담, 지속적인 만남과 토의, 용어의 의미조율과 모델과 가정에 대한 사전 규정, 상대 분야에 대한 있는 그대로의 인정, 타자에 대한 배려와 관심)으로 확인되었다. 이와 같은 연구 결과를 바탕으로 현대 과학의 주요한 본성인 다원주의적 특성과 그 안에서 이루어지는 다양한 협업의 특성을 반영하는 융합교육이 이루어져야 함을 제언하였다.

• 대한한의진단학회지
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• 제11권1호
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• pp.105-129
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• 2007

Objectives: The purpose of this research is to obtain basic data about the effects of Constitution-Acupuncture (CA) based on Eight-Constitution Medicine (ECM) by the expert CA Oriental Medical Doctors. Methods: The resources were collected from the internet survey method. 35 samples were collected. The SPSS 13.0 for windows and Answer Tree 3.0 was used for statistical analysis. Results: The results from this research are as follow. 1. The motivation that apply ECM to clinic are 'Because ECM is effective for diagnosis, treatment and prevention against disease' 48.6% and 'Because CA therapy is effective' 25.7%. 2. The advantage that CA therapy compare to the other acupuncture therapy are 'Management and prevention against disease are available by ECM theory to a person who exact constitution is confirmed' 82.9%, 'CA therapy is superior in treatment of hard symptoms to treat by the other acupuncture therapy' 80%, 'Treatment effect is good' 77.1%, 'Needle manipulation of CA is simple comparatively' 57.1%, 'It is definite whether treatment effect is good or not' 54.3% and CA therapy is superior all in diseases of twelve category. 3. When the effects of CA is good, patients expressed much 'Eyesight lightened', 'Took deep sleep at night', 'Fatigue decreased', 'Body is light', 'Feelings became refreshing' as well as 'Symptoms were improved' and also physicians confirmed as those reactions whether treatment is effective. Conclusions: The research suggest that CA is effective therapy in clinic, and so further study is needed for CA therapy.

• International Journal of Contents
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• 제7권1호
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• pp.37-44
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• 2011

This research attempts to analyze brand placement in game. Brand placement, being acclaimed as a new beneficiary model in game industry, is raising important mean of advertising. For development of game industry, the interdisciplinary study between game and advertising is indispensible. Therefore, the purpose of this study is to find creative types of brand placement in game for illuminating how advertising works in game contents. The results showed three types of brand placement in game. They are contextual type, prominent type and independent type. Contextual type is one where the brand is present within the game contents without being formally expressed: it plays a passive role. Prominent type is one where the brand is present within the game contents with being formally expressed: it plays an active role. Independent type is one where the brand is present within the game contents with being formally expressed but it is not related with the program: it plays an additional role. The research showed, among these three types, a prominent type is becoming mainstream of brand placement in game. In other words, the prominent type of brand placement is the most effective beneficial alternative in game industry.

• 경영과학
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• 제33권2호
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• pp.117-131
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• 2016

This study introduces the concepts on the phase-shifting phenomenon of financial markets, which was firstly used in econophysics area and explains how the phase-shifting behavior is studied in the fields of business management and finance. Specifically, we explain how the phases of financial markets are extremely changed under some external conditions, do an extensive literature review, and carry out case studies focusing on the 3 major financial crisis events including the 87 October crash, 97 Asian financial crisis, and 2007 global financial crisis. We also empirically examine the phase-shifting behavior of the Korean ELW products that has a similar payoff structure to the KOSPI200 options.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2005년도 생물공학의 동향(XVI)
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• pp.566-569
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• 2005

tyrosinase 저해 활성 실험 결과 1.2%(w/v) 이상의 농도에서 70% 이상의 저해를 나타내 색소침착에 대한 기능성 화장품 원료로 사용이 가능할 것으로 보이며, ACE 저해 활성 실험에서 1.5% 농도에서 60% 가량의 저해활성을 보여 혈관 변형 치료 및 예방에 효과가 있을 것으로 기대된다. UV 흡수능에서는 UV-B, UV-C의 영역에서 흡수 경향을 나타내며 자외선 차단제의 원료로 사용이 가능할 것으로 기대되며, 또한 bead 형성능을 가지고 있어 약물전달체로서 이용 가능성이 기대된다.

• Genomics & Informatics
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• 제14권4호
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• pp.138-148
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• 2016

The success of genome-wide association studies (GWASs) has enabled us to improve risk assessment and provide novel genetic variants for diagnosis, prevention, and treatment. However, most variants discovered by GWASs have been reported to have very small effect sizes on complex human diseases, which has been a big hurdle in building risk prediction models. Recently, many statistical approaches based on penalized regression have been developed to solve the "large p and small n" problem. In this report, we evaluated the performance of several statistical methods for predicting a binary trait: stepwise logistic regression (SLR), least absolute shrinkage and selection operator (LASSO), and Elastic-Net (EN). We first built a prediction model by combining variable selection and prediction methods for type 2 diabetes using Affymetrix Genome-Wide Human SNP Array 5.0 from the Korean Association Resource project. We assessed the risk prediction performance using area under the receiver operating characteristic curve (AUC) for the internal and external validation datasets. In the internal validation, SLR-LASSO and SLR-EN tended to yield more accurate predictions than other combinations. During the external validation, the SLR-SLR and SLR-EN combinations achieved the highest AUC of 0.726. We propose these combinations as a potentially powerful risk prediction model for type 2 diabetes.

• 한국멀티미디어학회논문지
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• 제10권12호
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• pp.1671-1678
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• 2007

In these days, Disaster Management Systems have still put emphasis on its recovery more than the prevention of disaster events. However, the countermeasure of restoration has limitations to prevent the caused loss because the disasters often happen and are massive. Therefore, we propose a disaster prevention system for supporting the safe urban. In this paper, we try to construct a real-time monitoring system to prevent disaster events using new technologies such as Wireless Sensor Networks (WSN) and Geographic Information System (GIS). As a prototype to simulate the fire disasters on real-time, we construct gas sensors and temperature sensors. Our system consists of a WSN system to collect data of the gas and temperature sensors and to monitor the situation information. Our contribution is to provide a prototype application to prevent the disasters from the fire by constructing a WSN system with gas and temperature sensors.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1997년도 춘계학술대회
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• pp.303-308
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• 1997

In this paper, we analyzed the spectroscopic properties of strip to analyzer urine qualitatively & quantitatively and make urine analyzer system stable by spectroscopy, and research the property of preamplifier unit. The analysis of spectroscopic properties of 10 pads in the strip is used for determine the wave length of light source of optic detector unit and used for basic materials which are necessary that we develop the algorithm analyzing the density grade of pad accurately. We make preamplifier unit by using the current to frequency method to measure the distribution of pad color. We implemented urine analyzer system. This system's hardware is composed of measuring unit for detect of distribution density of strip pad, main processing unit, communication unit, interface device, thermal printer, and indicator. The software consists of the program which manage the argument of test, proportion initial value of urine analyzer and calibrate analyzed result.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2005년도 춘계 학술발표회 논문집
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• pp.71-80
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• 2005

More than 100 bridges have been annually collapsed or seriously damaged by scouring in Korea. It is extremely hard to understand the complicated scour mechanism and estimate the scour depth with accuracy in fields, however since scouring is a very complex manifestation of sediment transport unable to describe with a simple mathematical tool. In order to obtain the reasonable solution to bridge scouring, therefore, the interdisciplinary co-operation is strongly recommended. In this study the special task force team for the scour problems around Incheon 2nd bridge piers is made, in which all kinds of scour oriented researches such as oceangraphic survey, hydraulic model test, numerical simulation, scour rate test, real-time scour monitoring, etc will be carried out. This paper provides this interdisciplinary procedure in details.