• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.11a
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• pp.111-112
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• 2022

자율운항 선박, 무인선 개발과 동 분야 디지털트윈 구현을 위해서는 선박 내부 데이터의 수집을 담당할 고신뢰성 선내 통신망 확보가 필수적이다. WiFi와 같은 전파 기반의 무선통신 시스템은 금속 구조물로 구성되는 선박 내 환경 자체가 원활한 통신의 장애 요소이다. 이러한 극한 환경 극복을 위해 자기장을 금속 표면에 유기하여 비 전파 기반으로 무선통신을 가능하게 하는 표면파 통신이 대안이 될 수 있다. 선박 전체의 일반 배치 관점에서 표면파 통신은 상갑판을 통해 크게 거주구역, 화물구역, 선수구역 및 기관구역 간 백본 통신망을 구성할 수 있으며 각 구역 별로는 부재의 개구부를 통해 금속 표면의 연속면을 확보하여 통신할 수 있다. 수밀 격벽의 표면파 통신 관통을 위해 비 도전체로 수밀은 유지한 채 아주 미세한 구멍을 확보하는 것으로도 금속 표면의 연속성을 확보할 수 있다. 이러한 표면파 통신을 활용하면 전파 기반의 무선통신, 비 전파 기반의 무선통신을 통합적으로 구성하여 선박 전체로는 선내 무선 백본망 구성, 그리고 각 구역 별로는 IoT 센서 네트워크 등의 선박 내부 고신뢰성 무선통신 확보가 가능하다.

• The Journal of Korean Academy of Sensory Integration
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• v.8 no.1
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• pp.41-49
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• 2010

Objective : Multisensory integration (MSI) is the essential process to use diverse sensory information for cognitive task or execution of motor action. Especially, visual and somatosensory integration is critical for motor behavior and coordination. This study was designed to explain spatial and temporal characteristics of visual and somatosensory integration by neurophysiological research method that identifies the time course and brain location of the SI process. Methods : Electroencephalography (EEG) and event-related potential (ERP) is used in this study in order to observe neural activities when integrating visual and tactile input. We calculate the linear summation (SUM) of visual-related potentials (VEPs) and somatosensory-related potentials (SEPs), and compared the SUM with simultaneously presented visual-tactile ERPs(SIM) Results : There were significant differences between the SIM and SUM in later time epochs (about 200-300ms) at contralateral somatosensory areas (C4) and occipital cortices (O1&O2). The amplitude of the SIM was mathematically larger than the summed signals, implying that the integration made some extra neural activities. Conclusion : This study provides some empirical neural evidence of that multisensory integration is more powerful than just combing two unisensory inputs in the brain and ERP data reveals neural signature relating to multisensory integrative process. Since this study is preliminary pilot study, larger population and criteria are needed for level of the significance. Further study is recommended to consider issues including effect of internally-driven attention and laterality of interaction to make the evidence by this study solid.

• Smart Media Journal
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• v.4 no.2
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• pp.17-25
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• 2015

In this paper proposes an idea for using NFC(Near Field Communication) on smalt mobile devices, you can easily control the electric wheelchair system. In this system with previous researches controlled a power wheelchair in a mobile device using Bluetooth communication, the board communicates with the integrated control of the wheelchair. With smart mobile devices, the wheelchair control board integrating the signal generated by checking real time so that the user can easily monitor the state of the wheelchair. Users are using smalt mobile devices, the wheelchair can be controlled easily, and the setting at any time according to the state of the individual and can be used. HEX format control is directly in hardware, allowing analysis was read, the user settings are typically used to match cards which support NFC technology such as bus card for registration, storing the selected information and enable read and were applicable. By applying this system, wheelchairs oriented aids disabled and older people able to access to provide with stability.

• The Journal of Korean Academy of Sensory Integration
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• v.13 no.1
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• pp.23-31
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• 2015

Objective : The aim of this study was to investigate the correlation between problem drinking and sensory processing features in college students. Methods : From April to June in 2015, mentally healthy 162 college students were completed the questionnaire for problem drinking and sensory processing features. Both Adolescent/Adult Sensory Profile and Alcohol Use Disorder Identification Test-Korean were used as measurements for correlation. Results : Depends on the existence of the problem drinking, there was no statistical differences between groups in sensory processing features. In group of problem drinking, the result indicated the positive correlation between problem drinking and sensory processing feature (r=.195). Conclusion : Problem drinking had significant relationship with sensory sensitivity. Therapists should understand the features of college students with problem drinking. It would be desirable to develop a proper evaluation and intervention programs for these people.

• Journal of Families and Better Life
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• v.26 no.6
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• pp.209-225
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• 2008

This study has been designed to develop integrated supportive service works for the families of disabled children registered in the D-Healthy Family Support Center. The service works are intended to improve family members' health and their growth potentials, and cover service programs of family education, counselling, culture solidarity, and information networks. There are two topics covered in this study; first, this study is to develop integrated supportive service programs for the families of disabled children, and second, the study is also to construct comprehensive strategies and plans for effective services after evaluating practical service programs. In this study, 31 families with one or more disabled children have been selected through stratified random sampling, and all the family members were observed for program effects of integrated service items developed from previously validated indices. For analysis, eight question items were made for interview and each item denotes satisfaction score ranging from 1(very dissatisfied) to 5(very satisfied) on the Likert's five point scale. Mean value of each item was counted after the program, and satisfaction scores were compared over the programs implementation. Overall, the satisfaction scores range 4.1 to 4.6, indicating relatively high satisfaction over most service program. Therefore, it is finally proposed that a longitudinal strategy model offer high quality service programs consistently for the target families, as a goal of achieving comprehensive cooperation and support exchanges between community and healthy family support center be schematized.

• Journal of Educational Research in Mathematics
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• v.24 no.4
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• pp.607-622
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• 2014

The purpose of this paper is that it analyzes the historical development of the concept of trigonometric functions and discuss some didactical implications. The results of the study are as follows. First, the concept of trigonometric functions is developed from line segments measuring ratios to numbers representing the ratios. Geometry, arithmetic, algebra and analysis has been integrated in this process. Secondly, as a result of developing from practical calculation to theoretical function, periodicity is formalized, but 'trigonometry' is overlooked. Third, it must be taught trigonometry relationally and structurally by the principle of similarity. Fourth, the conceptual generalization of trigonometric functions must be recognized as epistemological obstacle, and it should be improved to emphasize the integration revealed in history. The results of these studies provide some useful suggestions to teaching and learning of trigonometry.

• The KIPS Transactions:PartD
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• v.14D no.3 s.113
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• pp.303-310
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• 2007

Information system failure is various such as program test unpreparedness, physical facilities for damage prevention unpreparedness from simple software error. Although cross is trifling the result causes vast damage. Recently, became difficult by simple outside security system to solve this problem. Now, synthetic countermove establishment and suitable confrontation connected with danger came in necessary visual point about general Information Technology of enterprise. In connection with, in this paper, various informations and system and control about data that can happen information inside and outside considering integrity for IT resource, solubility, confidentiality within organization studied about special quality to model synthetic Risk Management System that can of course and cope in danger.

• Journal of Korea Spatial Information System Society
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• v.10 no.1
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• pp.51-63
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• 2008

Previous studies for routing In USN (Ubiquitous Sensor Networks) appear to be unreliable due to the dependence on non-spatial data and the lack of map overlay analysis. Multiple spatial parameters and radio propagation modeling techniques were integrated to derive RSSI (Received Signal Strength Indicator) value between route nodes and produce a highly reliable path map. It was possible to identify area-wide patterns of USN route subject to many different Influences (e.g. the specific effects of radio blocking factors such as the visible area, road area, cell duplicated area, and building density), which cannot be acquired by traditional non-spatial modeling. The quantitative evidence concerning the USN route for individual cell as well as entire study area would be utilized as major tools to visualize paths in real-time and to select alternative path when failure or audition of route node occurs.

• Journal of The Korea Institute of Healthcare Architecture
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• v.15 no.2
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• pp.23-30
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• 2009

The purpose of this study is to suggest planning directions of architectural integrates model by analysing the foreign case of integrated services for the aged and the disabled. For this study, we have researched on three different aspects. Three aspects are the element of barrier-free, architectural planning, information technology and operation. Based on the analysis of overseas examples, the good circumstance for both the disabled and the elder as one of member in the local societies could be defined like the following conditions: that is, (1) IT technology facilitates both barrier-free architecture and life to be easier and safer, and (2) both the disabled and the elder in local societies live together with the non-disabled in the same community. To realize this purpose, for a short-term plan, the system of feedback, examining the results of the research through the examples of housing plan, should be improved. In addition to, the system of public service, such as introducing the institutes for social educations, should be developed to result in the change of social insight. For a long-term plan, the whole society should have the research and plan of the unified model in a dimension of cities, where the network of public welfare is deeply associated with the system of the architecture, traffic, streets, and living-supporting information.

• The Journal of Korean Academy of Sensory Integration
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• v.18 no.3
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• pp.39-52
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• 2020

Objective : The purpose of this study was to investigate the effect of parent education on feeding problems in children with autism spectrum disorder. Method : Articles published between 2000 and May 2019 were identified through a database search of Cochrane Library, Embase, Ovid-Medline, and PubMed as well as through additional manual searches. A total of six articles were selected and qualitatively analyzed according to the level of evidence of the study and arranged according to PICO (Patient, Intervention, Comparison, Outcome). Results : Six articles were used for the data analysis; four articles were at evidence level 1 and two articles were at evidence level 3. Behavioral therapy was the most common interventional approach to parent education, and all of the articles based on behavioral therapy had evidence level 1. Conclusion : This study examines the various ways of parenting to help families with autism spectrum children with feeding problems in order to find directions for parent education that can be applied in clinical practice.