• Title/Summary/Keyword: Game Engine

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Exchange Rate Changes Cause Conflicting Effects on Improving the Quality and Increasing Market Share of Eco-friendly Vehicles (환율 변화의 친환경 자동차 품질 향상과 시장점유율 확대에 대한 상충효과)

  • Seo, Cheong-Seog
    • Environmental and Resource Economics Review
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    • v.29 no.3
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    • pp.313-333
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    • 2020
  • This paper shows that when the exchange rate changes, there are conflicting effects on improving the quality and increasing market share of eco-friendly vehicles. In a vertically differentiated duopoly model consisting of high quality clean cars and low quality internal combustion engine cars, I set up a two-stage noncooperative game under perfect information that the quality levels and the prices of the cars are competitively determined. The vehicles are assumed to be produced in countries that use distinct currencies. When the exchange rate of the country that produces low quality cars rises, the producer prefers to intensify competition due to the relatively lowed cost, and the incentive for quality improvement arises from the intension of attempting to reduce the degree of differentiation of quality level. At this time, the clean car manufacturing firm tries to avoid competition due to weakened competitiveness, and increases the quality level to expand quality differentiation. However, in this case, the market share of eco-friendly vehicles shrinks. On the other hand, if the exchange rate changes in the opposite direction, the market share of eco-friendly vehicles is expected to increase, but the quality of both cars are deteriorated, causing a conflict effect.

Development of Conversion Solutions for Interoperability of Applications on Different Mobile Internet Platforms (이기종 무선인터넷 플랫폼의 어플리케이션 상호 호환을 위한 변환 솔루션 개발)

  • Kang, Kyung-Bo;Kang, Dong-Hyun;Hong, Chang-Pyo;Ryu, Jong-Min;Lee, Joong-Hoon;Yoon, Jung-Han;Jwa, Jeong-Woo
    • The Journal of the Korea Contents Association
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    • v.7 no.4
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    • pp.1-9
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    • 2007
  • Cellular operators develop high speed mobile internet and multi-function cellular phones to activate new business model based on mobile internet services. Domestic cellular operators evolve their mobile networks from cdma2000-1x and EvDo to HSDPA to activate high speed mobile internet services. They also develop mobile internet platforms such as WIPI, BREW, and J2ME on multi-function cellular phones having multimedia solutions such as camera, MP3, MPEG, 3D game engine, DMB, PAN such as bluetooth, IrDA, W-LAN, and location information using GPS. But, content providers have problems of redevelopment of the same mobile internet application on different mobile internet platforms provided by cellular operators. In this paper, we develop conversion solutions for interoperability of mobile internet applications on WIPI and BREW using an one-pass compiler. We confirm the performance the proposed conversion solutions for the API conversion rate, the converted file size, and the full conversion time using the popular mobile games which are the killer applications on WiPI and BREW.

Interactive content development of voice pattern recognition (음성패턴인식 인터랙티브 콘텐츠 개발)

  • Na, Jong-Won
    • Journal of Advanced Navigation Technology
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    • v.16 no.5
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    • pp.864-870
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    • 2012
  • Voice pattern recognition technology to solve the problems of the existing problems and common issues that you may have in language learning content analysis. This is the first problem of language-learning content, online learning posture. Game open another web page through the lesson, but the concentration of the students fell. Have not been able to determine the second issue according Speaking has made the learning process actually reads. Third got a problem with the mechanical process by a learning management system, as well by the teacher in the evaluation of students and students who are learning progress between the difference in the two. Finally, the biggest problem, while maintaining their existing content made to be able to solve the above problem. Speaking learning dedicated learning programs under this background, voice pattern recognition technology learning process for speech recognition and voice recognition capabilities for learning itself has been used in the recognition process the data of the learner's utterance as an audio file of the desired change to a transfer to a specific location of the server or SQL server may be easily inserted into any system or program, any and all applicable content that has already been created without damaging the entire component because the new features were available. Contributed to this paper, active participation in class more interactive teaching methods to change.

Development of Plug-n-Play Automation System for Machine Tending through Digital Twin (디지털 트윈을 활용한 Plug-n-Play 머신텐딩 자동화 시스템 개발)

  • Park, Yong-Keun;Kim, Sujong;Um, Jumyung
    • The Journal of Society for e-Business Studies
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    • v.25 no.4
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    • pp.143-154
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    • 2020
  • With the increasing trend of making manufacturing system intelligent and autonomous, the introduction of robot-assist automation, like machine tending system for automated operation of CNC machine tools, is being actively carried out at many industrial sites. Most important part of this intelligent system to install machine tending system, is interface programming between the CNC machine tools and the industrial robot. Despite this importance, however, the machine tending system has many setup problems. it is necessary for difficult re-program of both controllers whenever a new CNC machine tool or robot is introduced. And, the helps of external engineers is required even though trivial changes due to the complex structure of the machine tending system. Authors of this paper introduces the integrated system of the interface between heterogeneous CNC machine tools and industrial robots. In addition, the digital twin implemented inside the machine tool controller enable shop-floor operators to change the interface programming easily. To implement this system, an integrated development environment for 1) an intelligent HMI platform that provide standardized interfaces to heterogeneous CNC machine tools and 2) a robot platform developing application software of various robots, was established. For easy un-tact environment, this paper explain the development of 3) a game-engine based web program of controlling and monitoring machine tending system remotely.

A Study on Virtual Environment Platform for Autonomous Tower Crane (타워크레인 자율화를 위한 가상환경 플랫폼 개발에 관한 연구)

  • Kim, Myeongjun;Yoon, Inseok;Kim, Namkyoun;Park, Moonseo;Ahn, Changbum;Jung, Minhyuk
    • Korean Journal of Construction Engineering and Management
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    • v.23 no.4
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    • pp.3-14
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    • 2022
  • Autonomous equipment requires a large amount of data from various environments. However, it takes a lot of time and cost for an experiment in a real construction sites, which are difficulties in data collection and processing. Therefore, this study aims to develop a virtual environment for autonomous tower cranes technology development and validation. The authors defined automation functions and operation conditions of tower cranes with three performance criteria: operational design domain, object and event detection and response, and minimum functional conditions. Afterward, this study developed a virtual environment for learning and validation for autonomous functions such as recognition, decision making, and control using the Unity game engine. Validation was conducted by construction industry experts with a fidelity which is the representative matrix for virtual environment assessment. Through the virtual environment platform developed in this study, it will be possible to reduce the cost and time for data collection and technology development. Also, it is also expected to contribute to autonomous driving for not only tower cranes but also other construction equipment.

A Study on the Gaze Flow of Internet Portal Sites Utilizing Eye Tracking (아이트래킹을 활용한 인터넷 포털사이트의 시선 흐름에 관한 연구)

  • Hwang, Mi-Kyung;Kwon, Mahn-Woo;Lee, Sang-Ho;Kim, Chee-Yong
    • Journal of the Korea Convergence Society
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    • v.13 no.2
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    • pp.177-183
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    • 2022
  • This study investigated through eye tracking what gaze path the audience searches through portal sites (Naver, Daum, Zoom, and Nate). As a result of the layout analysis according to the gaze path of the search engine, the four main pages, which can be called to be the gateway to information search, appeared in the form of a Z-shaped layout. The news and search pages of each site use an F-shape, which means that when people's eyes move from top to right in an F-shape, they read while moving their eyes from left to right(LTR), which sequentially moves to the bottom. As a result of analyzing through the heat map, gaze plot, and cluster, which are the visual analysis indicators of eye tracking, the concentration of eyes on the photo and head copy was found the most in the heat map, and it can be said to be of high interest in the information. The flow of gaze flows downward from the top left to the right, and it can be seen that the cluster is most concentrated at the top of the portal site. The website designer should focus on improving the accessibility and readability of the information desired by the user in the layout design, and periodic interface changes are required by investigating and analyzing the tendencies and behavioral patterns of the main users.

Research on Optimal Deployment of Sonobuoy for Autonomous Aerial Vehicles Using Virtual Environment and DDPG Algorithm (가상환경과 DDPG 알고리즘을 이용한 자율 비행체의 소노부이 최적 배치 연구)

  • Kim, Jong-In;Han, Min-Seok
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.15 no.2
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    • pp.152-163
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    • 2022
  • In this paper, we present a method to enable an unmanned aerial vehicle to drop the sonobuoy, an essential element of anti-submarine warfare, in an optimal deployment. To this end, an environment simulating the distribution of sound detection performance was configured through the Unity game engine, and the environment directly configured using Unity ML-Agents and the reinforcement learning algorithm written in Python from the outside communicated with each other and learned. In particular, reinforcement learning is introduced to prevent the accumulation of wrong actions and affect learning, and to secure the maximum detection area for the sonobuoy while the vehicle flies to the target point in the shortest time. The optimal placement of the sonobuoy was achieved by applying the Deep Deterministic Policy Gradient (DDPG) algorithm. As a result of the learning, the agent flew through the sea area and passed only the points to achieve the optimal placement among the 70 target candidates. This means that an autonomous aerial vehicle that deploys a sonobuoy in the shortest time and maximum detection area, which is the requirement for optimal placement, has been implemented.

Development of Simulator for Analyzing Intercept Performance of Surface-to-air Missile (지대공미사일 요격 성능 분석 시뮬레이터 개발)

  • Kim, Ki-Hwan;Seo, Yoon-Ho
    • Journal of the Korea Society for Simulation
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    • v.19 no.1
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    • pp.63-71
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    • 2010
  • In modern war, Intercept Performance of SAM(Surface to Air Missile) is gaining importance as range and precision of Missile and Guided Weapon on information warfare have been improved. An aerial defence system using Surface-to-air Radar and Guided Missile is needed to be built for prediction and defense from threatening aerial attack. When developing SAM, M&S is used to free from a time limit and a space restriction. M&S is widely applied to education, training, and design of newest Weapon System. This study was conducted to develop simulator for evaluation of Intercept Performance of SAM. In this study, architecture of Intercept Performance of SAM analysis simulator for estimation of Intercept Performance of various SAM was suggested and developed. The developed Intercept Performance of SAM analysis simulator was developed by C++ and Direct3D, and through 3D visualization using the Direct3D, it shows procedures of the simulation on a user animation window. Information about design and operation of Fighting model is entered through input window of the simulator, and simulation engine consisted of Object Manager, Operation Manager, and Integrated Manager conducts modeling and simulation automatically using the information, so the simulator gives user feedback in a short time.

Study on Development of Digital Ocean Information Contents for Climate Change and Environmental Education : Focusing on the 3D Simulator Experiencing Sea Level Rise (기후변화 환경교육을 위한 디지털 해양정보 콘텐츠 개발 방안 연구 - 해수면 상승 체험 3D 시뮬레이터를 중심으로 -)

  • Jin-Hwa Doo;Hong-Joo Yoon;Cheol-Young Lee
    • The Journal of the Korea institute of electronic communication sciences
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    • v.18 no.5
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    • pp.953-964
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    • 2023
  • Climate change is undeniably the most urgent challenge that humanity faces today. Despite this, the level of public awareness and understanding of climate change remains insufficient, indicating a need for more proactive education and the development of supportive content. In particular, it is crucial to intensify climate change education during elementary and secondary schooling when values and ethical consciousness begin to form. However, there is a significant lack of age-appropriate, experiential educational content. To address this, our study has developed an innovative 3D simulator, enabling learners to indirectly experience the effects of climate change, specifically sea-level rise. This simulator considers not only sea-level rise caused by climate change but also storm surges, which is a design based on the analysis of long-term wave observation big data. To make the simulator accessible and engaging for students, we utilized the 'Unity' game engine. We further propose using this simulator as a part of a comprehensive educational program on climate change.