• Journal of Digital Convergence
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• v.19 no.5
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• pp.187-196
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• 2021

The mobility handicapped are representative socially vulnerable people who account for a high percentage of our society. Due to the recent development of technology, personalized welfare technologies for the socially vulnerable are being studied, but it is relatively insufficient compared to the general people. In this study, we intend to implement a personalized restaurant recommendation system for the mobility handicapped. To this end, a hybrid recommendation system was implemented by combining the data of special transportation boarding and alighting history (7,153 cases) and information of Daegu Food restaurants (955 cases). In order to evaluate the effectiveness of the implemented recommendation system, we conducted performance comparisons with existing recommendation systems by prediction error rate and recommendation coverage. As a result of the analysis, the performance was higher than that of the existing recommendation system, and the possibility of a personalized restaurant recommendation system for the mobility handicapped was confirmed. In addition, we also confirmed the correlation in which similar restaurants are recommended in some types of the mobility handicapped. As a result of this study, it is judged that it will contribute to the use of restaurants with high satisfaction for the mobility handicapped, and the limitations of the study are also presented.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.519-521
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• 2022

본 논문에서는 교통약자들의 이동제한 및 한계와 코로나 19로 인한 관광산업의 손실을 해결할 VR/360도 가상현실을 통한 웹 플랫폼 개발을 제안한다. 이 연구는 활용될 자원인 계절과 날씨자료를 효율적으로 촬영 및 준비하여 기존의 VR/360도의 가상현실을 최대화하고, 기존의 로드뷰 API 및 VR기기의 응용을 다양화한다. 또한, 이 연구는 '관광지를 방문한다'라는 개념을 실외뿐만이 아니라 실내에서도 사실적으로 체험할 수 있음을 제시한다. 이때 사실적인 체험을 더욱 극대화하기 위하여 VR/360도에 접목된 계절과 날씨의 콘텐츠를 구매할 수 있게 하여 소비자에게 선택지 내에서의 다양성을 주고, 단순 체험이 아닌 관광산업의 경제적 이윤으로 연결한다. 본 논문에서는 예상결과를 통하여 기존의 단순 VR/360도 체험을 통한 가상현실에 비해 좀 더 다양한 환경 조성을 통한 콘텐츠와 관광산업의 개선 및 경제성 면에서 발전성을 보인다.

• TTA Journal
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• s.162
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• pp.114-115
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• 2015

PMI 기법은 어떤 대상의 장점, 단점, 흥미로운 점을 파악하는 것으로 'Plus(+), Minus(-), Interesting의 약자로서 어떠한 주제나 사항에 대해 좋은점, 나쁜점, 흥미로운 점을 찾아내는 사고기법'이다.

• Journal of the Korea Society of Computer and Information
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• v.29 no.1
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• pp.61-68
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• 2024

Despite the continuous efforts to mitigate pedestrian accidents at crosswalks, the problem persist. Vulnerable groups, including the elderly and disabled individuals are at a risk of being involved in traffic incidents. This paper proposes the implementation of object detection algorithm using the YOLO v5 model specifically for pedestrians using assistive devices like wheelchairs and crutches. For this research, data was collected and utilized through image crawling, Roboflow, and Mobility Aids datasets, which comprise of wheelchair users, crutch users, and pedestrians. Data augmentation techniques were applied to improve the model's generalization performance. Additionally, ensemble techniques were utilized to mitigate type 2 errors, resulting in 96% recall rate. This demonstrates that employing ensemble methods with a single YOLO model to target transportation-disadvantaged individuals can yield accurate detection performance without overlooking crucial objects.

• Journal of Industrial Convergence
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• v.21 no.4
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• pp.165-170
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• 2023

There are cases where the mobility impaired have difficulty moving from the moment they leave the house. If guardians also do not have time to entrust their families, who are socially disadvantaged, to a shelter, the guardian has no choice but to check directly in order to know the location of the guardian. The AI home care solution was designed to relieve the anxiety and labor of caregivers and to provide convenience for protection facility officials and users. If more facilities distribute and use services free of charge to non-profit foundations and protective facilities, the concern of guardians will be reduced, and the burden of facility officials who have to manage facility users will be reduced. In this paper, we provide emergency notification services to guardians in the event of an emergency as well as location and status alarms for guardians, which are all data related to movement, in consideration of the mobility vulnerable. Furthermore, it is necessary to provide a service function that recommends the optimal route using a navigation function to ease the convenience and burden of facility officials. It is necessary to alleviate anxiety by providing necessary information to the guardian, such as the location of the shuttle used by the mobile weak and the time of getting on and off. In addition, while providing services for free, the goal is to improve the quality of service for facility managers and the quality of service for the mobility weak.

• The Journal of the Korea Contents Association
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• v.21 no.11
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• pp.193-202
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• 2021

Barrier-free is defined as inclusive design of built environments such as building and its facilities that can be approached, entered and used by persons with disabilities. The purpose of this paper develops the content that can identify the physical barriers in the way of movement and provide information associated with barrier-free by using both Geospatial Information and Virtual Reality technology. For this, we conducted literature reviews to find the tackling barriers in terms of barrier-free access and extracted main functions to construct the content. Then, the prototype model which composed of VR engine and 3D geospatial data was implemented, and finally the utilization of the prototype was checked in accordance with barrier-free scenario. The developed prototype model of this study would be contributed to design the barrier-free of public places and access to public buildings for the mobility-disabled people.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.21 no.6
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• pp.87-96
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• 2022

The traffic vulnerable, including elderly pedestrians, have a relatively low walking speed and slow cognitive response time due to reduced physical ability. Although a smart crossing system has been developed and operated to improve problem, it is difficult to operate a signal that reflects the appropriate walking speed for each pedestrian. In this study, a neural network model and a multiple regression model-based traversing speed estimation model were developed using image information collected in an area with a high percentage of traffic vulnerability. to support the provision of optimal walking signals according to real-time traffic weakness. actual traffic data collected from the urban traffic network of Paju-si, Gyeonggi-do were used. The performance of the model was evaluated through seven selected indicators, including correlation coefficient and mean absolute error. The multiple linear regression model had a correlation coefficient of 0.652 and 0.182; the neural network model had a correlation coefficient of 0.823 and 0.105. The neural network model showed higher predictive power.

• Journal of Industrial Convergence
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• v.20 no.11
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• pp.85-93
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• 2022

As of the end of 2019, the total population nationwide was 51,849,861, and over the past five years, the population per household has decreased by 1.52% annually from 2.45 in 2015 to 2.31 in 2019. Looking at the current status of population distribution by age group, Busan metropolitan city had the highest proportion of senior citizens aged 65 or older at 18.2%, and Sejong Special Self-Governing city had the lowest at 9.4%. In particular, as of 2019, the population of the mobility handicapped was 15,219,000 nationwide, showing a ratio of about 29.4% of the total population. Therefore, it is important to secure the right to move according to the mobile facilities so that the mobility handicapped can move safely and conveniently. Against this background, this study places value on transportation welfare facilities centered on the mobility handicapped for safe and convenient movement, and in particular, in proposing measures to cope with the entry of an aging society and the continuous increase of the mobility handicapped, the transportation facilities, The purpose of this study is to analyze the impact of welfare facilities on the mobility handicapped and suggest implications. As a research method, the results of statistical analysis methods were presented through major preceding studies and expert surveys.

• Proceedings of the Korean Society of Computer Information Conference
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• 2023.07a
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• pp.653-654
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• 2023

한국이 정보 선진국으로 발전함에 따라 노인들의 스마트폰 보유율은 증가하고 있지만, 디지털 환경에 대한 접근성과 경험 부족 등의 이유로 아직도 디지털 약자이다. 그런데도 노령층들이 쉽게 사용할 수 있는 노령자 전용 애플리케이션의 개발은 저조한 실정이다. 본 연구에서는 이러한 문제를 해소하기 위해 노령층을 대상으로 다양한 생활 정보를 제공하는 모바일 애플리케이션, 'Seniors Guide'를 개발하였다. 'Seniors Guide'는 사용자 거주지역 주민 센터의 자치 프로그램 정보, 노인 일자리 정보, TV 프로그램 알람, 투약 시간 알람 설정 기능을 제공하는 등 노령층에서 자주 이용하는 다양한 정보와 기능들을 하나의 애플리케이션에서 유용하게 사용할 수 있도록 하는 앱으로 구현되었다.

• Patent21
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• s.62
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• pp.36-38
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• 2005

PIUG란 Patent Information User Group의 약자로서 특허정보에 전문적ㆍ기술적 관심을 가진 개인들이 모여서 결성한 비영리단체이다. 이들은 특허정보 관련 정보교환 및 인적 네트워크 형성을 목적으로 매년 미국에서 Conference를 개최하고 있으며, 올해의 PIUG Conference는 "The Future of Patent Information - Tools and Techniques for Adding Value"라는 주제하에 미국 버지니아주의 Arlington이라는 도시에서 5월 21일부터 26일까지 7일간 개최되었다.