• Nuclear Medicine and Molecular Imaging
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• 제40권2호
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• pp.58-65
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• 2006

Since the development of sophisticated molecular carriers such as octereotides for peptide receptor targeting and monoclonal antibodies against various antigens associated with specific tumor types, radionuclide therapy (RNT) employing open sources of therapeutic agents is promising modality for treatment of tumors. furthermore, the emerging of new therapeutic regimes and new approaches for tumor treatment using radionuclide are anticipated in near future. In targeted radiotherapy using peptides and other receptor based tarrier molecules, the use of radionuclide with high specific activity in formulating the radiopharmaceutical is essential in order to deliver sufficient number of radionuclides to the target site without saturating the target. In order to develop effective radiopharmaceuticals for therapeutic applications, it is crucial to carefully consider the choice of appropriate radionuclides as well as the tarrier moiety with suitable pharmacokinetic properties that could result in good in vivo localization and desired excretion. Up to date, only a limited number of radionuclides have been applied in radiopharmaceutical development due to the constraints in compliance with their physical half-life, decay characteristics, cost and availability in therapeutic applications. In this review article, we intend to provide with the improved understanding of the factors of importance of appropriate radionuclide for therapy with respect to their physical properties and therapeutic applications.

• 품질경영학회지
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• 제47권2호
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• pp.367-380
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• 2019

Purpose: The purpose of this study is (1) to empirically examine why laggards resist IT adoption in public service and (2) to investigate the relationship between resistance and negative behavioral intention. Methods: The questionnaire survey was conducted on expressway users who do not use High-pass system. The collected 232 samples were analyzed using structure equation model method with AMOS 22.0. Results: Resistance is found to be a statistically significant factor affecting intention to reject. Also, incompatibility, privacy concern, status quo inertia and relative advantage are found to be statistically significant factors affecting resistance. Conclusion: Laggards have a tendency to intend to reject IT adoption rather than to postpone. They are affected not by monetary, procedural aspect associated with purchasing or registering OBU(On Board Unit). Incompatibility and relative advantage which are inherent attributes of Hi-pass system are more influential factors than privacy concern and status quo inertia. They make ethical and emotional decision partially affected by public-social factors.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 가을 학술논문 발표대회
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• pp.188-189
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• 2020

In the field of architecture, concrete and steel bars are the most common and popular combinations. The relationship between the two in a structure is a complementary good that increases in utility when consuming both materials at the same time. However, the combination of the two, which has been perceived as semi-permanent, often faces repairs or reconstruction without its lifespan reaching decades. There are a number of deterioration factors at work for the reason for this phenomenon. Among them, the neutralization of concrete in particular refers to the process in which calcium hydroxide inside concrete reacts with carbon dioxide and loses alkalinity, which creates a corrosive environment for rebars inside concrete, causing serious damage to concrete. In this study, we intend to use a multi-physical analysis program using finite element analysis method to analyze the degree of carbonation according to the internal temperature and concentration of carbon dioxide in concrete, thereby contributing to the prediction of long-term neutralization of concrete and the research related to measures for neutralization of concrete.

• 한국조리학회지
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• 제12권1호
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• pp.157-172
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• 2006

Food Culture is formed in a unique culture heritage in some areas harmonized with social factors mixed with geographical conditions, natural environment, culture and religion. The more the life skill develops highly, the more people focus on improvement of the life skill in order to realize a delightful and convenient life, and plan an increase of production. Recently food-service companies have changed very quickly with economic environment. Such change will be continued and its speed will be more faster than now. Many food-service companies will disappear for weak competition, if they don’t manage adequately in such a case. Therefore, food-service companies have to search for an efficient, unique and creative management strategy. In such a viewpoint, Kyunggi-do designated five local cities as a model of Food Culture Streets greeting Welcoming Year of Kyunggi-do in 2005. The purpose of this study is to serve the healthy food to visitors visiting the Food Culture Streets and to do public relations about the excellence of their traditional food. In addition, this study includes improving tastes and qualities of food through education about cooking skills, management strategies and the best service with unique and creative menu development. Accordingly, we need to analyze the factors continuously on the business of food culture streets, and intend to use them as a database for high quality education and activity of food service industry in the future.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 2009년도 IWAIT
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• pp.664-667
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• 2009

There is strong demand to create wearable PC systems that can support the user outdoors. When we are outdoors, our movement makes it impossible to use traditional input devices such as keyboards and mice. We propose a hand gesture interface based on image processing to operate wearable PCs. The semi-transparent PC screen is displayed on the head mount display (HMD), and the user makes hand gestures to select icons on the screen. The user's hand is extracted from the images captured by a color camera mounted above the HMD. Since skin color can vary widely due to outdoor lighting effects, a key problem is accurately discrimination the hand from the background. The proposed method does not assume any fixed skin color space. First, the image is divided into blocks and blocks with similar average color are linked. Contiguous regions are then subjected to hand recognition. Blocks on the edges of the hand region are subdivided for more accurate finger discrimination. A change in hand shape is recognized as hand movement. Our current input interface associates a hand grasp with a mouse click. Tests on a prototype system confirm that the proposed method recognizes hand gestures accurately at high speed. We intend to develop a wider range of recognizable gestures.

• The Journal of Asian Finance, Economics and Business
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• 제7권11호
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• pp.117-126
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• 2020

This paper is aimed to explore the co-movement capital market in Southeast Asia and analysis the correlation of conventional and Islamic Index in the regional and global equity. This research become necessary to represent the risk on the capital market and measure market performance, as investor considers the volatility before investing. The time series daily data use from April 2012 to April 2020 both conventional and Islamic stock index in Malaysia and Indonesia. This paper examines the dynamics of conditional volatilities and correlations between those markets by using Multivariate Generalized Autoregressive Conditional Heteroscedasticity (MGARCH). Our result shows that conventional or composite index in Malaysia less volatile than Islamic, but on the other hand, both drive correlation movement. The other output captures that Islamic Index in Indonesian capital market more gradual volatilities than the Composite Index that tends to be low in risk so that investors intend to keep the shares. Generally, the result shows a correlation in each country for conventional and the Islamic index. However, Internationally Indonesia and Malaysia composite and Islamic is low correlated. Regionally Indonesia's indices movement looks to be more correlated and it's similar to Malaysian Capital Market counterparts. In the global market distress condition, the diversification portfolio between Indonesia and Malaysia does not give many benefits.

• Journal of Communications and Networks
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• 제15권2호
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• pp.122-131
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• 2013

We address the problem of effective vehicular routing in hostile scenarios where malicious nodes intend to jeopardize the delivery of messages. Compromised vehicles can severely affect the performance of the network by a number of attacks, such as selectively dropping messages, manipulating them on the fly, and the likes. One of the best performing solutions that has been used in static wireless sensor networks to deal with these attacks is based on the concept of watchdog nodes (also known as guard nodes) that collaborate to continue the forwarding of data packets in case a malicious behavior in a neighbor node is detected. In this work, we consider the beacon-less routing algorithm for vehicular environments routing protocol, which has been previously shown to perform very well in vehicular networks, and analyze whether a similar solution would be feasible for vehicular environments. Our simulation results in an urban scenario show that watchdog nodes are able to avoid up to a 50% of packet drops across different network densities and for different number of attackers, without introducing a significant increase in terms of control overhead. However, the overall performance of the routing protocol is still far from optimal. Thus, in the case of vehicular networks, watchdog nodes alone are not able to completely alleviate these security threats.

• 정보보호학회논문지
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• 제29권2호
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• pp.439-449
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• 2019

ICBMA(IoT, Cloud, Big Data, Mobile, AI)로 대변되는 정보기술의 발전은 데이터의 급증과 이를 수용하기 위한 데이터센터의 수적, 양적 증가로 이어지고 있다. 이에 데이터센터를 사회 중요 기반시설로 인식하고, 테러 공격 대응 등 안전성 확보를 위해서는 사전에 물리보안 위협의 식별이 매우 중요하다. 본 논문에서는 위협의 식별과 분류를 쉽게 처리할 목적으로 물리보안 위협 분할도(PS-TBS)를 개발하고, 전문가 설문조사를 통하여 개발 된 물리보안 위협 분할도의 타당성과 효용성을 검증한다. 또한 위협 분할도의 항목에 대해 상세 정의를 통해 실무 활용을 통한 물리보안 수준 향상에 기여하고자 한다.

• International journal of advanced smart convergence
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• 제10권3호
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• pp.131-142
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• 2021

Recently, there has been an active service that provides customized news to news subscribers. In this study, we intend to design a customized news service system through Deep Learning-based Social Network Service (SNS) activity analysis, applying real news and avoiding fake news. In other words, the core of this study is the study of delivery methods and delivery devices to provide customized news services based on analysis of users, SNS activities. First of all, this research method consists of a total of five steps. In the first stage, social network service site access records are received from user terminals, and in the second stage, SNS sites are searched based on SNS site access records received to obtain user profile information and user SNS activity information. In step 3, the user's propensity is analyzed based on user profile information and SNS activity information, and in step 4, user-tailored news is selected through news search based on user propensity analysis results. Finally, in step 5, custom news is sent to the user terminal. This study will be of great help to news service providers to increase the number of news subscribers.

• 한국컴퓨터정보학회논문지
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• 제25권4호
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• pp.149-156
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• 2020

4차산업 혁명으로 다양한 산업분야에서 빅데이터 기술을 성공적으로 활용하여 경영성과를 얻은 사례들이 보고되고 있다. 본 논문은 의료산업에서 빅데이터를 성공적으로 활용한 혁신 사례들 살펴보고 어떤 데이터가 어떠한 목적으로 활용되고 있으며 이러한 빅데이터가 어떤 가치를 창출하는지 시사점을 도출하고자 하였다. 서론에서는 본 연구의 배경과 방향에 대해 기술하여 연구의 전체적인 구조를 파악하고자 하였다. 문헌 연구에서는 빅데이터의 정의 및 개념과 빅데이터 연구와 관련된 내용, 그리고 의료 산업에서의 빅데이터의 활용과 관련된 내용을 설명하고자 하였다. 본문에서는 질병연구를 위해 국민건강정보와 개인유전정보를 활용한 기술, 개인의 생체정보를 활용하여 개인 건강 서비스, 기업의 업무 프로세스 효율화를 위해 기업이 확보하고 있는 지식 데이터와 전자의무기록 정보를 활용한 사례, 그리고 신약개발을 위해 의료빅데이터 활용 사례 등을 서술하였다. 결론에서는 본 연구의 학문적, 비즈니스적 시사도출과 함께 연구의 성과가 국내 의료산업에 어떠한 도움을 줄 수 있는지 방향성을 제시하고자 하였다.