• Korean Institute of Interior Design Journal
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• v.17 no.3
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• pp.123-130
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• 2008

This study is about the Characteristic of glass outer skin expressions in space designs of contemporary society, due to the rapid development of information and digital technology. These days, the glass outer skin show the various images and space expressions which symbolize the informations and the society. The contemporary space designers focus on the glass as the structure materials, and purposely use the glass to achieve the structure concept which satisfies the needs of contemporary society. Therefore, it is a valuable work to analyze the meaning of glass, which has been used for the structure. Throughout the work which has been experienced by glass outer skin, theoretical studies have been achieved and recently the 14 examples were chosen as the glass structures based on the experimental research and frequency featured in magazines after year 2000, which we have analyzed in detail. Glass outer skin reflect the phrases of time in modern society, and throughout the meaning of it, we could see that the glass outer skin serve the roles in informations, interface, imaginary modernization, and as a landmark position. Therefore, in this study, we can make a definition of glass outer skin expression based on the situations of modem times by analyzing the symbolic meaning of glass outer skin in contemporary space designs.

• Journal of Broadcast Engineering
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• v.26 no.4
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• pp.377-389
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• 2021

This paper presents a framework design of a digital twin system for a vertical smart farm. In this paper, a framework of digital twin systems establishes three factors: 1) Client 2) IoT gateway, and 3) Server. Especially, IoT gateway was developed using the Eclipse Ditto, which has been commonly used as the standard open hardware platform for digital twin. In particular, each factor is communicating with the client, IoT gateway, and server by defining the message sequence such as initialization and data transmission. In this paper, we describe the digital twin technology trend and major platform. The proposed design has been tested in a testbed of the lab-scale vertical smart-farm. The sensor data is received from 1 Jan to 31 Dec 2020. In this paper, a prototype digital twin system that collects environment and control data through a raspberry pi in a plant factory and visualizes it in a virtual environment was developed.

• The Journal of the Korea institute of electronic communication sciences
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• v.13 no.6
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• pp.1317-1322
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• 2018

In order to complete the AR UI design simply and quickly, the usable factors were studied in this thesis. The primary aim of interface design is to increase the usability. The various factors should be considered together when we evaluate the usability. The idealized usable working model is based on user-centered with the aim of perceiving the interests of users, operating easily and completing targets. In order to ensure the types of usable factors, literature survey method had been used and a total of 85 usable factors had been collected by this survey. To make the usable factors can adapt the augmented reality, the concept of factors should be redefined. We extract the items which is adaptable and user-centered, combine or delete the items that have the same meanings and finally select 25 usable evaluative factors. Then we take HCI professional as the object and collect the data by Heuristic Evaluation. We systematize the usable factors by Principal Component Analysis, and observe the correlation between the usable factors and classify those which have high correlation.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2017.04a
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• pp.18-18
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• 2017

ISO11783은 농업 산업분야 통신 프로토콜의 국제 표준으로, 농용트랙터 및 작업기 ECU 간의 통신 프로토콜을 표준화한다. 이 표준은 서로 다른 제조사의 제품 간에 호환성을 갖게 하며, 정밀 농업에 대한 핵심 기반을 제공한다. 현재 해외에서는 이미 ISO11783 기반의 AFS(Advanced Farming System)를 통한 정밀농업이 상용화되어 농가에 보급되고 있다. 이에 비해, 국내에서 이러한 표준을 따르는 농기계들은 미비한 실정이며, 향후 농업의 정밀 농업화를 통한 고부가가치 창출 및 선진국의 무역 장벽에 대비와 해외 수출 판로 개척을 위해 ISO11783 표준에 대한 R&D가 필요로 한다. 이에 IsoAgLib를 분석하고 임베디드 보드에 Porting하여 ISO11783 기반 작업기 ECU를 구현하였고, 이를 기반으로 ISO11783 기반 작업기 ECU의 구현 방법을 발표한다. IsoAgLib의 시스템 아키텍처는 계층화 되어 있어, 타겟에 의존적인 계층만 수정하여, IAR 환경에서 Cortex M3 보드에 포팅을 완료하였다. 작업기 ECU들은 자신만의 인터페이스 화면을 갖으며, 이를 Object pool이라 한다. 이것을 Virtual Terminal(VT)에 업로드 하여, VT가 해당 작업기 ECU의 사용자 인터페이스 기능을 제공하도록 한다. 이에 작업기 ECU 구현 1 단계로, 'VT-Designer'를 통하여 Object pool를 설계한다. 2 단계, 'vt2iso'를 통해서 Object pool을 IsoAgLib 상에서 사용할 수 있도록 변환한다. 3 단계, 포팅된 IsoAgLib project에 변환된 파일을 포함 시킨다. 4 단계, 작업기 ECU의 주기적인 작업 및 각 메시지 수신시 수행할 작업을 코딩한다. 5 단계, 빌드 및 타겟 보드에 업로딩 한 후, New Holland 사의 $Intelliview^{TM}$ iv display (VT)과 연결하여 동작을 확인한다. 확인 결과로 VT에 디자인한 Object pool이 표시 되며 soft key 입력 시 작업기 ECU에서 LED가 변한다. 결론적으로, 연구 결과를 바탕으로 ISO11783 기반의 작업기 ECU의 디자인 및 구현이 가능하며, 이를 통해 향후 국내의 ISO11783 기반의 작업기 ECU의 개발에 도움을 줄 수 있다.

• Smart Media Journal
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• v.8 no.2
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• pp.29-38
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• 2019

With the advancement of information and communication technology, tactical networks are continuously being converted to All-IP future tactical networks that integrate all application services based on Internet protocol. Futuristic tactical mesh network is built with tactical WAN (wide area network) nodes that are inter-connected by a mesh structure. In order to guarantee QoS (quality of service) of application services, tactical service mesh (TSM) is suggested as an intermediate layer between infrastructure and application layers for futuristic tactical mesh network. The tactical service mesh requires dynamic QoS monitoring and control for intelligent QoS coordination. However, legacy networking nodes used for existing tactical networks are difficult to support these functionality due to inflexible monitoring support. In order to resolve such matter, we propose a tactical mesh WAN node as a hardware/software co-designed networking node in this paper. The tactical mesh WAN node is conceptually designed to have multi-access networking interfaces and virtualized networking switches by leveraging the DANOS whitebox server/switch. In addition, we explain how to apply eBPF-based traffic monitoring to the tactical mesh WAN node and verify the traffic monitoring feasibility for supporting QoS coordination of tactical-mesh traffic.

• The KIPS Transactions:PartB
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• v.16B no.5
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• pp.341-346
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• 2009

The motion data glove is a representative human-computer interaction tool that inputs human hand gestures to computers by measuring their motions. The motion data glove is essential equipment used for new computer technologiesincluding home automation, virtual reality, biometrics, motion capture. For its popular usage, this paper attempts to develop an inexpensive visual.type motion data glove that can be used without any special equipment. The proposed approach has the special feature; it can be developed as a low-cost one becauseof not using high-cost motion-sensing fibers that were used in the conventional approaches. That makes its easy production and popular use possible. This approach adopts a visual method that is obtained by improving conventional optic motion capture technology, instead of mechanical method using motion-sensing fibers. Compared to conventional visual methods, the proposed method has the following advantages and originalities Firstly, conventional visual methods use many cameras and equipments to reconstruct 3D pose with eliminating occlusions But the proposed method adopts a mono vision approachthat makes simple and low cost equipments possible. Secondly, conventional mono vision methods have difficulty in reconstructing 3D pose of occluded parts in images because they have weak points about occlusions. But the proposed approach can reconstruct occluded parts in images by using originally designed thin-bar-shaped optic indicators. Thirdly, many cases of conventional methods use nonlinear numerical computation image analysis algorithm, so they have inconvenience about their initialization and computation times. But the proposed method improves these inconveniences by using a closed-form image analysis algorithm that is obtained from original formulation. Fourthly, many cases of conventional closed-form algorithms use approximations in their formulations processes, so they have disadvantages of low accuracy and confined applications due to singularities. But the proposed method improves these disadvantages by original formulation techniques where a closed-form algorithm is derived by using exponential-form twist coordinates, instead of using approximations or local parameterizations such as Euler angels.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.12
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• pp.6105-6110
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• 2012

Smart devices have made our daily life more intelligent and provided convenient life styles in which advanced interface and high speed LTE enable us to have proliferation of empirical Apps. This research has analyzed and evaluated Unstructured data from the users who experienced 'Hair Style Magic Mirror App' by focusing on emotional information. Further this study suggests some directions that the application development industry should take in the near future. The findings through Chi-Square analysis indicate that the application has not affected the overall satisfaction of the consumers; consumers received higher satisfaction in paid version of applications than free versions. Emotional Information analysis shows that users value the practicality of each application the most. Thus, the application developers should focus on practicality and sensitivity side corresponding to the demand of consumers.

• 한국HCI학회:학술대회논문집
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• 2007.02b
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• pp.353-360
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• 2007

최근 국가균형발전을 위한 문화콘텐츠산업의 비중은 날로 커지고 있으며 디지털 컨버젼스의 중심으로 부각되고 있다. 이러한 시대적, 사회적 요구에 즈음하여 정부의 지역문화 콘텐츠 육성 의지에 부합하는 전통건축물의 e-Learning을 위한 웹 기반 저작도구의 구현방법을 제안하고자 한다. 지금까지의 전통건축의 복원 및 재현은 전통적인 전수방식에 의존하거나 다분히 현상적인 수준에 그치고 있어, 우리 문화에서 중요한 위치를 차지하고 있는 전통건축물에 대한 저변의 확대와 보편적이고 대중적인 이해를 돕기에는 한계가 존재하는 것이 사실이다. 또한 전통건축에 관련한 교육자료는 대부분 고서(古書)나 텍스트에 의존하고 있는 것이 현실인 점을 감안할 때, 시각적이고 인터랙티브한 e-Learning 시스템의 연구는 필수적이라 할 것이다. 연구의 범위로서는 한국문화콘텐츠진흥원의 진행 중 사업인 문화원형복원사업인 "조선시대 탐라순력도의 디지털콘텐츠 개발"의 내용을 토대로 하며, 조선 중기인 17세기 제주도의 주심포계 전통건축을 대상으로 하고 있다. 본 연구의 내용은 1) 17세기 중엽 제주도의 주심포계 전통건축물에 대한 가구구조의 형성관계 및 그 형상을 디지털화하기 위한 데이터 체계를 제안하고, 2) 이에 따른 웹 기반의 가상전시 및 e-Learning 콘텐츠를 위한 시스템 구축의 프로토타입을 제시하며, 3) 상기 제시한 데이터 체계에 근거한 사용자 중심의 전통건축물 재현을 위한 3차원 저작환경 및 그 인터페이스를 제시한다. 이 결과로 전통건축물의 형성원리를 이해하고 전통 양식에 근거한 창의적 저작이 가능한 환경을 제시함으로써 멀티미디어 저작물 및 디자인 협업, 전통건축 유지보수 분야 등에 파급효과를 기대할 수 있다. 더불어 제안된 내용에 근거한 향후 연구로 전통건축물에 대한 일관되고 통합적인 관리방안과 그 실현수단에 대한 논의를 비롯하여 전통문화를 소재로 한 디지털 콘텐츠의 활용방안 및 그 부가가치에 대한 논의가 병행되어야 할 것이다.

• Journal of Information Technology Application
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• v.3 no.4
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• pp.63-92
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• 2001

This paper makes an attempt to look at the process of automatically generating an application software system based on the Entity-Relationship (E-R) model. Basically, the process consists of five steps as follows: First, the designer develops an E-R model of an real-world system. Second, the software generator automatically generates a stereo-type application system. Third, the generator produces database schema and link information between application programs. Fourth, the designer designs the user interface including menu, screen design and so on. Finally, the generator completes the process integrating all the elements of an application system. Five basic program generation rules, three extended rules and a database generation rule have been suggested. By following each rule with the generator, the designer can build an application with an extremely efficient manner compared with traditional approaches. A case study has been included in order to show the applicability of the automated software generation process suggested in this paper. It has been demonstrated from the case study that the idea of applying an automated generator in systems development based upon the E-R model worked well.

• Journal of the Institute of Convergence Signal Processing
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• v.1 no.1
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• pp.64-73
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• 2000

The Korean character recognition technology for user interface in multimedia terminal requires fast processing time and high recognition rate. In this paper, we propose an phoneme and character recognition technology which uses characteristic information of korean and features of input strokes, i.e, feature point, feature vector, virtual vector, position relation between strokes. And, a recognition both phoneme and character by the various writing types of users uses korean database. The Korean database has been constructed by the characteristic information of korean and phoneme models which have various stroke information. Also, we use successive processing by the position relation between strokes and backtracking processing by the modification processing of stroke numbers which composed of each phoneme. This method reduces the complex processing of phoneme separation. The proposed on-line korean character recognition system has obtained 13msec average character processing time and correct recognition rate more than $95{\%}$ In a recognition experiment, where we tested 600 characters written by 10 people among 1,200 words.