• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.37 no.4
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• pp.359-366
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• 2009

MATLAB Autocode generation is a feature that converts a block diagram model in Simulink to a c program. Utilizing this function makes MATLAB/Simulink an integrated developing environment, from controller design to implementation. It can reduce development cost and time significantly. However, this automated process requires high reliability on the software, especially the original Simulink block diagram model. And thus, the verification of the codes becomes important. In this study, a UAV flight program which is generated with Simulink is validated and modified according to DO-178B. As a result of applying the procedures, the final program not only satisfied the functional requirement but is also verified with structural point of view with Decision Coverage 93%, Condition Coverage 95% and MC/DC 90%.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.233-239
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• 2006

차세대 디지털 방송 기술인 DMB(Digital Multimedia Broadcasting) 지상파서비스가 세계최초로 우리나라에서 시작되었다. 현재 DMB 서비스는 디지털 기기의 다양한 기능들과 더불어 '디지털 컨버전스'를 주도하고 있고, 새 기술을 통한 서비스는 디지털 기기에 대한 사용자의 경험을 한층 풍부하게 해주고 있다. 또한 이러한 제품들은 다양한 기능에 대해서 멀티태스킹을 지원하기 때문에, 사용성, 조작방법 등 여러 측면에서 과거의 제품들과 상당히 많은 차이를 보여준다. 본 논문은 다양한 기능이 통합되고, 멀티태스킹이 되는 제품을 설계하는데 있어 감각양식(Modality) 측면에서 사용자들에게 더 나은 경험을 제공할 수 있도록 하는 방법을 제안한다. 지금까지 모달리티와 인터럽션(Interruption)에 대한 연구는 다중 자원 이론(Multiple resource theory)을 바탕으로 연속적인 과업(Task)를 수행함에 있어서 과업의 감각양식이 충돌할 경우, 사용자에게 인지적인 부담을 준다는 측면에서 이루어져 왔다. 그러나, 본 논문에서는 태스크를 수행함에 있어 멀티태스킹의 지원 여부에 따라서 과업의 감각양식이 다양한 순서를 가지고 사용자에게 인터럽션을 일으킬 때, 사용자의 태스크 수행 능력이나 사용자 만족도에 어떻게 영향을 주는지 알아보고자 한다.

• The Transactions of the Korea Information Processing Society
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• v.6 no.7
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• pp.1858-1866
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• 1999

Recently, increasing attacks using network packets cause serious problems in networked environments ; from disturbing normal network operations to damaging computing resources. Among them denial of services are considered as critical attacks that directly exploit network packets to degrade availability. In this paper, we classify the types of denial of services in the network layer and develop detection methods that can keep the network from the classified denial of service attacks. The methods are then merged into an integrated denial of service detection algorithm that is scalable to detect new denial of service attacks.

• Journal of the Korea Society of Computer and Information
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• v.13 no.5
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• pp.163-170
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• 2008

As the degree of dependency and application of component increases, the need to strengthen security of component is also increased as well. The component gives an advantage to improve development productivity through its reusable software. Even with this advantage, vulnerability of component security limits its reuse. When the security level of a component is raised in order to improve this problem, the most problematic issue will be that it may extend its limitation on reusability. Therefore, a component model concerning its reusability and security at the same time should be supplied. We suggest a Separation of Concerns Security Model for Extension of Component Reuse which is integrated with a wrapper model and an aspect model and combined with a reuse model in order to extend its security and reusability by supplying information hiding and easy modification, and an appropriate application system to verify the model's compatibility is even constructed. This application model gives the extension of component function and easy modification through the separation of conceits, and it raise its security as doll as extends its reusability.

• The Journal of Korean Academy of Sensory Integration
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• v.12 no.2
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• pp.13-24
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• 2014

Objective : The purpose of this research is to choose scissoring, handling chopsticks, wearing a jacket with buttons as a significant subject in order to understand relations between writing ability of a preschool child and functional achievement ability. Methods : The subjects are 66 preschool children under the age of 5. The research has conducted for 1 week by using writing test, scissoring, handling chopsticks, wearing a jacket with buttons as an indicator of valuation. We collected statistics by using program called SPSS WIN 14.0 for the process of analysis. Results : The score of writing ability which is one of the common characteristic of subject has a significant difference in terms of statistics according to the gender. the score of girls are higher($13.33{\pm}2.55$) than boys($11.92{\pm}2.52$). Writing ability has a significant relativity with the achievement ability of scissoring(r=0.244, p=0.048),handling chopsticks(r=0.403, p=0.001), achievement ability in terms of statistics. Conclusion : A significant difference between writing ability according common characteristics of children is showed based on the gender. writing ability has a significant relativity with the achievement ability of scissoring, handling chopsticks, achievement ability.

• Journal of the Korean Association of Geographic Information Studies
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• v.26 no.3
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• pp.12-36
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• 2023

Graph databases, which store different types of data and their relationships modeled as a graph, can be effective in managing and analyzing real estate spatial data linked by complex relationships. However, they are not widely used due to the limited spatial functionalities of graph databases. In this study, we propose a uniform grid-based real estate spatial data management approach using a graph database to respond to various real estate-related spatial questions. By analyzing the real estate community to identify relevant data and utilizing national point numbers as unit grids, we construct a graph schema that linking diverse real estate data, and create a test database. After building a test database, we tested basic topological relationships and spatial functions using the Jackpine benchmark, and further conducted query tests based on various scenarios to verify the appropriateness of the proposed method. The results show that the proposed method successfully executed 25 out of 29 spatial topological relationships and spatial functions, and achieved about 97% accuracy for the 25 functions and 15 scenarios. The significance of this study lies in proposing an efficient data integration method that can respond to real estate-related spatial questions, considering the limited spatial operation capabilities of graph databases. However, there are limitations such as the creation of incorrect spatial topological relationships due to the use of grid-based indexes and inefficiency of queries due to list comparisons, which need to be improved in follow-up studies.

• Korean Journal of Culture and Social Issue
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• v.10 no.2
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• pp.1-15
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• 2004

The drastically changing society has brought diverse types of families, and these diversities are changing the concept of the word 'family' itself. Inevitably, these changes cause different viewpoints among family members, developing into conflicts and social issues. In this paper, generational family problems, which are caused by changes within the family as a result of the variously, diversely changing society, are observed to suggest a resolution. Looking into the functional variety that today's structural change within a family demands, several positives changes described below have been observed; Firstly, the change in the way of interaction among family members; Secondly, the demand for continuance on relational functions including love, care, etc, as a psychological resource of family; Thirdly, the conversion from form's sake relationship to actual relationship; and Lastly, the usage of a clearer communications network. The interaction between the parent-children relationship, according to the changes in family life cycle, is also re-focused to seek resolutions for intergenerational conflicts. The results are as follows; Firstly, the changeability of various family types today must be accepted, and the functional aspects of changing families must be emphasized ; Secondly, the mutual-exchanging value of each generation must be accepted, strengthening relational functions between generations; Thirdly, it is necessary to refocus filial piety. In other words, though the intergenerational transmission of family functions may become the basis of lineage and clan formation, it won't be possible without interaction between generation.

• Journal of Digital Contents Society
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• v.7 no.4
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• pp.263-269
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• 2006

The trend of the web is moving from portal-centered to user-centered, and RIA(rich internet application) is considered best solution for usability and functionality of the next generation web. But the lack of reference document or technical guide for RIA implementation is a big obstacle for extension of RIA environment to practical business engineer or user. In this paper, I will suggest the implementation conceptand reference site for user-centered environment based on RIA concept. The suggested concept support wire/wireless environment, and use the e-mail that is already used by many company or portal. The contents of this paper will be very helpful to the practical engineer or portal/company that want to use or implement about RIA environment.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.37 no.6
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• pp.361-361
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• 2000

In this paper, we propose a novel control signaling protocol that efficiently controls connection setup and increases the utilization of network resources. The proposed protocol, Separated Control Signaling Protocol(SCSP), separates bearer control from call control lot WDM optical networks. The main function of call control is to check the availability of network resources such as wavelengths and receivers at destination node. Bearer control is to reserve and assign wavelengths. The signaling architecture of this protocol consists of call controller and hearer controller The call controller handles call setup and release, activates the beater controller, and manages the status of call and bearer. The bearer controller reserves wavelengths, sets up bearer, tears down bearer. and notifies the status of beater to call controller. The state transition diagrams of each controller are designed. Using control messages and related primitives, the information flows for call setup and bearer setup, hearer teardown and call release, and reaction for setup failures are described to evaluate the performance. The simulation results show that the separated control signaling protocol is superior to conventional one in terms of call blocking probability and resource utilization.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2012.05a
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• pp.3-3
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• 2012

자원식물은 인간의 천연물에 대한 관심 고조와 미래 생물자원으로서의 경제적 가치가 재인식되어 미국을 비롯한 선진국은 오래전부터 유용한 식물자원 보존과 이를 이용한 산업화에 정부가 앞장서 추진하고 있다. 더욱이 우리나라는 국토면적에 비해 많은 식물종이 분포하고 뚜렷한 4계절과 다양한 토양특성으로 우수한 기능성식물자원이 많으며 이들 식물자원의 이용과 효능에 대한 풍부한 지식이 전통적으로 이어져 왔다. 그럼에도 불구하고 우수한 자원식물에 대한 보존과 이용이 과학화 체계화되지 못하여 세계적인 품종이나 제품개발은 미흡한 실정이다. 그동안 우리나라는 토종자원에 대한 관심과 꾸준한 연구개발로 농촌진흥청 보존 농업유전자원은 세계 6위 수준('10년말 291천점) 이며, 멀티기능 유용물질 함유 작물 개발 및 실용화 기술수준도 기술력 지수 세계7위로 높게 평가되고 있다. 그러나 이들 자원식물로부터 유용물질을 이용하여 세계시장을 선도하는 천연물신약, 건강기능성식품, 한방화장품, 천연 색소 및 향료 등의 제품개발은 미흡하여 앞으로 유망 자원식물을 이용한 체계적이고 과학적인 고부가 산업 육성을 위한 집중적인 투자가 필요한 시점이다. 자원식물을 이용한 천연물 신약개발은 고부가가치 제품과 산업재산권 확보가 가능하므로 수입 대체와 기술 및 제품수출이 충분히 이루어질 수 있다고 보여 현재 연구개발 중인 신약후보 도출 및 임상개발 과제의 수요를 반영한 후 단계별 대규모 신약개발 노력이 필요하다 하겠다. 건강기능 식품 개발은 고령사회 진입과 노령인구 증가로 노화억제 및 고령자 건강유지용 식품비중이 지속적으로 높아질 것으로 추정되어 약용식물을 소재로 개인 맞춤형 나노바이오 건강기능성 식품 개발을 통한 다양한 제품개발이 요구된다. 또한 우리나라 화장품분야의 전반적인 기술수준은 세계최고 기술의 62% 수준이나 화장품 소재의 자원식물 발굴과 나노기술 접목을 통한 효능의 극대화는 소비자의 웰빙 트랜드와 외국화장품과의 차별화 전략에 맞물려 국내 한방화장품의 세계화가 가능한 품목 중 하나이다. 식용 및 염색용 색소도 자원식물이 풍부하고 천연색소 시장이 크게 확장되고 있어 자원식물 중 경제성과 기술적 개발 가능성을 고려하여 단계적인 개발이 요구된다. 특히, 우리의 식물자원, 전통지식, 과학기술이 통합되어 효능을 현저하게 상승시키는 천연물신약, 건강보조식품, 화장품 등이 개발된다면 세계시장을 선도할 날도 멀지 않을 것으로 기대한다.