• Title/Summary/Keyword: 스마트폰 App

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Design and Implementation of Sandcastle Play Guide Application using Artificial Intelligence and Augmented Reality (인공지능과 증강현실 기술을 이용한 모래성 놀이 가이드 애플리케이션 설계 및 구현)

  • Ryu, Jeeseung;Jang, Seungwoo;Mun, Yujeong;Lee, Jungjin
    • Journal of the Korea Computer Graphics Society
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    • v.28 no.3
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    • pp.79-89
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    • 2022
  • With the popularity and the advanced graphics hardware technology of mobile devices, various mobile applications that help children with physical activities have been studied. This paper presents SandUp, a mobile application that guides the play of building sand castles using artificial intelligence and augmented reality(AR) technology. In the process of building the sandcastle, children can interactively explore the target virtual sandcastle through the smartphone display using AR technology. In addition, to help children complete the sandcastle, SandUp informs the sand shape and task required step by step and provides visual and auditory feedback while recognizing progress in real-time using the phone's camera and deep learning classification. We prototyped our SandUp app using Flutter and TensorFlow Lite. To evaluate the usability and effectiveness of the proposed SandUp, we conducted a questionnaire survey on 50 adults and a user study on 20 children aged 4~7 years. The survey results showed that SandUp effectively helps build the sandcastle with proper interactive guidance. Based on the results from the user study on children and feedback from their parents, we also derived usability issues that can be further improved and suggested future research directions.

A Study on the Development of a New OSMU Education Model Applying Local Content as a Source (지역 콘텐츠를 이용한 OSMU 교육모델 개발에 관한 연구)

  • Lee, Seung-Whan
    • Cartoon and Animation Studies
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    • s.21
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    • pp.51-69
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    • 2010
  • OSMU is now one of the most important keywords in the media industry. However, how to educate future media workers who can design and implement OSMU is an unsolved problem to media educators. In order to overcome the limitations of two perspectives of OSMU, namely economic perspective and storytelling perspective, this study propose a new OSMU education model for college students. Beginning with creating local content using MediaWiki, this model consists of five phases of media windowing, including MediaWiki, smartphone application, Web design, multimedia e-magazine for tablet PC, and publication. A Chuncheon-based university has been experimenting with this new OSMU education program. MediaWiki has played important role for creating local content collaboratively. All That Chuncheon application is now on service via SKT Tstore and Chuncheon Web pages has been designed successfully. Multimedia e-magazine and book publication is under preparation. The experiment has been successful so far, mainly due to the strategic choice of local content as the source of following media window. Also students have been strongly motivated for participating in this OSMU program.

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A DDoS Attack Detection of private mobile network using Time Series Analysis (시계열 분석을 적용한 사설 모바일 네트워크의 DDoS 공격 탐지)

  • Kim, Dae Hwan;Lee, Soo Jin;Pyo, Sang Ho
    • Convergence Security Journal
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    • v.16 no.4
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    • pp.17-24
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    • 2016
  • Many companies and organizations are building a mobile office environment using the LTE network, the national disaster network and Air Force LTE network are built for public safety and national defense. However the recent threats on information security have been evolving from information leakage to DDoS attacks to neutralize the service. Especially, the type of device such as Smart phones, smart pad, tablet PC, and the numbers are growing exponentially and As performance of mobile device and speed of line develop rapidly, DDoS attacks in the mobile environment is becoming a threat. So far, universal countermeasure to DDoS attacks has been interception the network and server step, Yet problem regarding DDoS attack traffic on mobile network and expenditure of network resources still remains. Therefore, this paper analyzes the traffic type distributed in the private mobile network such as the National Disaster Network, and Air Force LTE network in order to preemptively detect DDoS attacks on terminal step. However, as direct analysis on traffic distributed in the National Disaster Network, and Air Force LTE network is restricted, transmission traffics in Minecraft and uploading video file upload which exhibit similar traffic information are analyzed in time series, thereby verifing its effectiveness through establishment of DDoS attacks standard in mobile network and application that detects and protects DDoS attacks

GIScience Studies and Policies in Korea: Focus on Web GIS and National GIS (한국의 지리정보학과 지리정보 정책: Web GIS와 국가 GIS를 중심으로)

  • Ku, Cha-Yong;Hwang, Chul-Sue;Choi, Jin-Mu
    • Journal of the Korean Geographical Society
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    • v.47 no.4
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    • pp.592-605
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    • 2012
  • This article reviewed issues in Korean geographical journals: web GIS and National GIS. Web GIS in Korea is now evolving to mobile GIS, which requires portable hardware, wireless Internet, and GPS receiver. The new trend of mobile GIS is using a smart phone. Recently, a variety of studies for the mobile App and mobile Web in Korea has been developed. With explosive information on the Web 2.0, the Korean government has built the Human-Oriented Geographic Information System (HOGIS) in which Ontology was implemented for semantic query on the Web. On the government side, Korean government has produced various nationwide data through 4-phase NGIS project. Current NGIS ($4^{th}$ phase: 2011-2015) moves toward a Korean Green Geospatial Society using geospatial information as a new growth engine for the future.

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Design of a Metamodel for the Development Process of a Mobile Application (모바일 앱 개발 프로세스 메타모델 설계)

  • Cho, Eun-Sook
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.15 no.8
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    • pp.5248-5255
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    • 2014
  • Because of the rapid growth of smart phone market, the number of mobile applications has increased exponentially. As mobile applications are developing at a rapid rate, many of them are being developed without considering a systematic development process or quality factors, such as reusability, extensibility, etc.. As a result, they have many faults internally, they are being underrated in satisfaction or reliability from customers, and finally customers do not update or repeat the purchase. Therefore, a meta-model of development process for mobile applications was designed to improve the continuous usability of mobile applications as well as the satisfaction and reliability from users. Applying development process based on a meta-model to mobile application development is expected to improve development productivity and quality of mobile applications.

Walking Aid System for Visually Impaired People by Exploiting Touch-based Interface (촉각 인터페이스를 이용한 시각장애인 보행보조 시스템)

  • Lee, Ji-eun;Oh, Yoosoo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2015.10a
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    • pp.522-525
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    • 2015
  • In this paper, we propose a walking aid system that guides route to visually impaired people in order to recognize uncertain obstacles based on tactile stimulation. The proposed system is composed of the touch-based obstacle detection module, the obstacle height detection module, and the route guidance algorithms. The touch-based obstacle detection module detects each obstacle, which is located at left, right, and front of a visually impaired person by stimulating his thumb with the rotational force of the servomotor. The obstacle height detection module integrates detected data by the linear arrangement of ultrasonic sensors to identify the height of an obstacle about 3 of-phase(i.e., high, medium, low). The proposed route guidance algorithm guides an optimized path to the visually impaired person by updating his current position information based on the signal of the built-in GPS receiver in smartphone. In addition, the route guidance algorithm delivers information with speech to a visually impaired person through Bluetooth commuination in the developed route guidance app. The proposed system can create a path to avoid the obstacles by recognizing the placed situation of the obstacles with exploring the uncertain path.

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A Study of Usability for Mobile Map Applications -Focused on Mobile Map Applications of Naver and Daum- (모바일 지도 애플리케이션의 사용성 연구 -네이버, 다음 지도를 중심으로-)

  • Moon, Jung-Sun;Kim, Seung-In
    • Journal of Digital Convergence
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    • v.15 no.2
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    • pp.347-353
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    • 2017
  • The aim of this paper is to improve the usability of Mobile Maps by allowing more people to use. To figure out better UX/UI, I evaluated usability for Mobile Applications from various materials such as literatures and blogs for qualitative methods and interviews and questionnaires about satisfaction of Naver and Daum for quantitative methods. So, We know that a map app is important and it is affected by force and profile on the portal site than its own features, because, not often in everyday life. Even though people do not use Mobile Map Applications frequently, we need to improve usability to make anybody use them easily by minimizing depth and button designs.

A Comparative Study of Factors Affecting the Intention to Use Mobile Payment Services: Focusing on the Types of Mobile Payment Services and Different Age Groups (모바일결제 사용의도의 주요 요인에 관한 비교 연구: 연령 및 모바일결제 서비스 유형에 따른 비교)

  • Jung, Seung-Min
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.9
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    • pp.101-112
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    • 2017
  • The purpose of this paper is the comparative analysis of factors affecting the intention to use mobile payment services. This research compares the types of mobile payment services and different age groups. The result reveals that consumers' innovativeness has a positive impact on the intention to use mobile payment services in case of smartphone-only pay and compatibility and image have a positive effect on the intention to use mobile payment services in case of online pay. There is no significant influencing factor in the case of mobile app card. Moreover, the study reveals that consumers' innovativeness, trust in other domains, and compatibility positively affect the intention to use mobile payment services in the 30-49 age group. In the 50-69 age group, image has a positive impact and perceived risk has a negative impact on the intention to use mobile payment services. There is no significant influence factor in the 10-29 age group. This study is a first-time comparative analysis of factors affecting the intention to use mobile payment services focusing on the types of mobile payment services and different age groups.

Usage and Satisfaction of Food-related Smartphone Applications of Office Workers in Seoul Area (수도권 지역 직장인의 음식 관련 스마트폰 어플리케이션 이용 실태와 만족도)

  • Gil, Munkyung;Jeong, Heesun;Yoon, Jiyoung
    • The Korean Journal of Food And Nutrition
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    • v.27 no.6
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    • pp.1096-1106
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    • 2014
  • This study was conducted to figure the usage status and satisfaction of food-related smartphone applications by generic characteristics and food purchase attributes of Seoul area workers. The results show that health vitality-oriented group, married compared to single, those with higher eating-out expenses possess more food-related applications (p<0.05). The primary reason for the usage of food-related applications was the need for food-related information (53.7%). The highest application subjects in use were restaurant-related information and recipe information. The real-life aid food-related applications utilized most were also restaurant information (60.7%) and recipe information (28.3%). Health vitality-oriented respondents especially turned out to use nutrition information and food functionality information often (p<0.01), and recipes or calories & diet information usage frequency was higher in women than in men (p<0.001). Restaurant-related information were more frequently used by singles, highly educated, and those with high income and eating-out expenses (p<0.05). Satisfaction of food-related applications was normal (3.06), showing that the satisfactory level is not yet high. Satisfaction regarding purchase attributes showed that the health vitality-oriented group (3.19) was more satisfied compared to other groups (p<0.05), and women (3.16) were more satisfied that men (2.89) were (p<0.05). Inconveniences of food-related applications were highest in usage fee (3.29), simplicity of information (3.28), lack of reliability of information and need for update (3.10). The results of this study implies that various subdivisions of food-related applications users should be implemented; at the same time, food-related applications covering diverse subjects that regard each group's characteristics should be developed in order to utilize food-related knowledge and information as a marketing tool in the food industry; this can efficiently be done by paying attention to the quality of information and updates within applications.

A Reference Architecture and Manifest Standard Suggestions for Interworking Open Web Store (OWS(Open Web Store) 연동을 위한 참조 모델 및 Manifest 표준 제안)

  • Ryu, Taejun;Kim, Changjun;Jeon, Jonghong;Lee, Seungyoon;Park, Sangwon
    • KIPS Transactions on Software and Data Engineering
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    • v.2 no.11
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    • pp.779-788
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    • 2013
  • With a wide dissemination of smartphones, the number of native applications developed and sold freely by anyone is growing now. The application market activated by Apple's App Store is spreading more rapidly with Google's Google Play. But due to platform-dependent of native application's attribute, developers are programming at each platform. As a result, development cost is increasing compared to earnings. To solve a dependency problem, people focused on web application developed by web-based language. However, stores at each browser are requiring a web application to follow manifest format. And this causes browser-dependent problem. Those problems can be solved by installing a certain browser, but this can make an application useless on the other browser of a store. Dependency problem can narrow not only user's application variation, but also concentration on some specific store. OWS(Open Web Store) is a standard store that supports various web environments. It overcomes browser or platform dependency problems by interworking applications between stores. Also customers are able to choose a large number of applications. In this paper, related to OWS, I would like to suggest manifest standards and store's reference architecture. An interworking scenario is going to be proposed as well.