• 제목/요약/키워드: Realtime data

검색결과 543건 처리시간 0.023초

Design of Realtime MIDI Controller by using Leap Motion (Leap Motion을 이용한 실시간 MIDI Controller의 설계)

  • So, Junseop
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 한국정보통신학회 2016년도 추계학술대회
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    • pp.726-728
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    • 2016
  • In this paper, a realtime MIDI controller is designed using leap motion. The controller makes virtual MIDI port on Windows that it is connected to the port and protocol for communication with DAW or VST. It is converted MIDI data when it is detected a real time the position and shape of hand. This converted data transfer MIDI port by MIDI CC(Control Change). Therefore this controller has the purpose to support flexible MIDI input function than existed MIDI controller.

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Realtime 3D Terrain Generation with Sound Data (사운드 데이터를 이용한 실시간 3차원 지형 생성)

  • Kim, Won-Seop;Chang, Kyu-Sik;Kim, Tae-Yong
    • 한국HCI학회:학술대회논문집
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    • 한국HCI학회 2008년도 학술대회 1부
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    • pp.184-189
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    • 2008
  • In this paper, the sound data either from the sampled or streamed source are utilized for generating a map in the video game play for the dynamiccal use of sound data and synesthesia to users. When users can generate sound in real-time or put the sampled source, it is analyzed and re-processed through Fourier transformation to show the 3D map in dynamic shape over time. We interpolate the generated data to enable the game agents and objects to move.

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Implementation of the Realtime Learning Evaluation System and Interaction for Smart Learning (스마트러닝을 위한 실시간 학습평가 및 상호작용 시스템 구현)

  • Lee, Myung-Suk;Son, Yoo-Ek
    • KIPS Transactions on Computer and Communication Systems
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    • 제2권6호
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    • pp.245-252
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    • 2013
  • We developed a system which supports the functions of real-time evaluation and feedback for smart learning. The system is consisted of an application for tablet PC and smart phone and the server, and the client exchanges data with the server through wireless communication. Whereby, the proposed system enabled realtime interaction and feedback between learner and teacher or between learners. As a result, the instruction for each learner's level is available using the system, and then it could enhance the level of academic achievement and learning interest.

Case Studies of Predicting Volcanic Ash by Interactive Realtime Simulator (실시간 대화형 화산재 확산 예측 시스템에 의한 화산재 확산 예측)

  • Kim, Hae-Dong;Lee, Jun-Hee
    • Journal of Environmental Science International
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    • 제23권12호
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    • pp.2121-2127
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    • 2014
  • Analyzing the observational data of volcanic activities around the northern part of Korean peninsula, the odds of volcano eruption increases continuously. For example, the cumulative seismic moment and frequence observed near Mt. Baekdu show a sudden increased values. In this study, predicting the diffusion of volcanic ash for two cases were carried out by using interactive realtime simulator, which was developed during last 2 years as a research and development project. The first case is Sakurajima volcano (VEI=3) erupted in August 2013. The second case is assumed as the volcanic eruption at Mt. Baekdu (VEI=7) under landing circumstance of typhoon Maemi (August 2003) in Korean peninsula. The synoptic condition and ash diffusion for the two cases were simulated by WRF(Weather Research and Forecast) model and Lagrangian dispersion model, respectively. Comparing the simulated result of the first case (i.e., Sakurajima volcano) with satellite image, the diffusion pattern show acceptable result. The interactive realtime simulator can be available to support decision making under volcanic disaster around East Asia by predicting several days of ash dispersion within several minutes with ordinary desktop personal computer.

Production Management System having Realtime Cost Calculation Function using RFID (RFID를 이용한 실시간 생산원가 산출기능을 갖는 생산관리 시스템)

  • Park, In-Jung
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • 제11권1호
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    • pp.53-59
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    • 2011
  • In this paper, the implementation of a production control system has been studied in order to obtain Realtime Cost Calculation using an exact Machine Factor and Man Factor based on RFID reader data transferred through network. For the study, microprocessor built in the controller of production facilities is used and also RFID reader is built additionally. Control part, card reader used for check the beginning and ending working time of workers, and Machine Factor and Man Factor calculated are transferred to server via PLC transmission port, serial transmission port, or Ethernet transmission port. By using the system, the production cost or the production efficiency is calculated exactly. Therefore it is possible to improve production rate and cost reduction by the use of the proposed production control system.

A Software Approach for the Realtime Received Signal Processing in Magnetostrictive Long-Range Ultrasonic Testing (자왜형 원거리 초음파검사에서 실시간 수신신호 처리를 위한 소프트웨어 접근)

  • Heo, Won Nyoung;Lim, Hyung Taik;Kim, Tae Gyung;Choi, Myoung Seon
    • Journal of the Korean Society for Nondestructive Testing
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    • 제32권5호
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    • pp.540-544
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    • 2012
  • Like the phase array based ultrasonic system, complicated electronics has been used for real time signal processing in the magnetostrictive long-range ultrasonic testing(LRUT) system. This study shows that the software approach including the phase compensation, noise filtering and waveform transformation takes advantage rather than the previous hardware approach. Furthermore, it is possible for the software approach to be able more flexible and efficient realtime signal processing. These results will contribute to a cost-effective LRUT system and analysis of the inspection data.

The Development of a Web-based Realtime Monitoring System for Facility Energy Uses in Forging Processes (단조공정에서 설비 에너지 사용에 대한 웹 기반 실시간 모니터링 시스템 개발)

  • Hwang, Hyun-suk;Seo, Young-won;Kim, Tae-yeon
    • Journal of Internet Computing and Services
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    • 제19권1호
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    • pp.87-95
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    • 2018
  • Due to global warming and increased energy costs around the world, interests of energy saving and efficiency have been increased. In particular, forging factories need methods to save energy and increase productivity because of needing amounts of energy uses. To solve the problem, we propose a system, which includes collection, monitoring, and analysis process, to monitor energy uses each facility in realtime based on the IoT devices. This system insists of worksheets management, facility/energy management, realtime monitoring, history search, data analysis through connecting with existed ERP/MES Systems in manufacturing factories. The energy monitoring process is to present used energy collected from IoT devices connected with installed gasmeter and wattmeter each facility. This system provide the change of energy uses, usage fee, energy conversion, and green gas information in realtime on Web and mobile devices. This system will be enhanced with energy saving technology by analyzing constructed big data of energy uses. We can also propose a method to increase productivity by integrating this system with functions of digitalized worksheets and optimized models for production process.

An Adaptive Packet Loss Recovery Scheme for Realtime Data in Mobile Computing Environment (이동 컴퓨팅 환경에서 실시간 데이터의 적응적 손실 복구 방법)

  • Oh, Yeun-Joo;Baek, Nak-Hoon;Park, Kwang-Roh;Jung, Hae-Won;Lim, Kyung-Shik
    • Journal of KIISE:Information Networking
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    • 제28권3호
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    • pp.389-405
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    • 2001
  • In these days, we have increasing demands on the real-time services, especially for the multimedia data transmission in both of wired and wireless environments and thus efficient and stable ways of transmitting realtime data are needs. Although RTP is widely used for internet-based realtime applications, it cannot avoid packet losses, due to the use of UDP stack and its underlying layers. In the case of mobile computing applications, the packet losses are more frequent and consecutive because of the limited bandwidth. In this paper, we first statistically analyze the characteristics of packet losses in the wired and wireless communications, based on Gilbert model, and a new packet recovery scheme for realtime data transmission is presented. To reflect the transmission characteristics of the present network environment, our scheme makes the sender to dynamically adjust the amount of redundant information, using the current packet loss characteristic parameters reported by the receiver. Additionally, we use relatively large and discontinuous offset values, which enables us to recover from both of the random and consecutive packet losses. Due to these characteristics, our scheme is suitable for the mobile computing environment where packet loss rates are relatively high and varies rapidly in a wide range. Since our scheme is based on the analytic model form statistics, it can also be used for other network environments. We have implemented the scheme with Mobile IP and RTP/RTCP protocols to experimentally verify its efficiency.

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Performance Evaluation for Scheduling Policies on a Realtime Database (실시간 데이터베이스에 대한 스케쥴링 정책의 성능 평가)

  • Kim, Suhee;Han, Kwangrok;Kim, Hwankoo;Son, Sang-Hyuk
    • Convergence Security Journal
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    • 제4권3호
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    • pp.57-82
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    • 2004
  • The confluence of computers, communications, and databases is quickly creating a distributed database where many applications require real-time access to temporally consistent sensor data. We have developed an object-oriented real-time database system called BeeHive to provide a significant improvement in performance and functionality over conventional non-real-time database and object management systems. In this paper, the performance of two data-deadline cognizant scheduling policies EDDF and EDF-DC and the baseline EDF policy with/without admission control are evaluated through extensive experiments on BeeHive. The ranges where data-deadline cognizant scheduling policies are effective and where admission control plays a role are identified.

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Application of a Large Ocean Observation Buoy in the Middle Area of the Yellow Sea (황해중부해역에서의 대형 해양관측부이의 운용)

  • Shim, Jae-Seol;Lee, Dong-Young;Kim, Sun-Jeong;Min, In-Ki;Jeong, Jin-Yong
    • Ocean and Polar Research
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    • 제31권4호
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    • pp.401-414
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    • 2009
  • Yellow Sea Buoy (YSB) was moored in the center of the Yellow Sea at 35$^{\circ}$51'36"N, 124$^{\circ}$34'42"E, on 12 September 2007. YSB is a large buoy of 10 m diameter, and as such is more durable against collision by ships and less likely to be lost or removed by fishing nets compared to small ordinary buoys of 2.3 m diameter. YSB is equipped with 12 kinds of oceanic and meteorologic instruments, and transfers its realtime observation data to KORDI through ORBCOMM system every 1 hour. Data on ocean winds, air temperature, air pressure, and sea temperature appear to be accurate, while water property sensors (AAQ1183), which are sensitive to fouling, are producing errors. YSB (2007), Ieodo ocean research station (2003), and Gageocho ocean research station, which was completed in October 2009, will establish the 2 degrees interval by latitude in the Yellow Sea, and they will contribute though the 'Operational Oceanography System' as the important realtime observation network.