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데이터 로깅 활용 Smart r-Learning이 학생들의 논리적 사고력에 미치는 효과

이재인, 유승한

한국정보교육학회 정보교육학회논문지 제18권 제1호 2014.03 pp.25-33

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최근 교육용 로봇 하드웨어 발달로 연산 처리 속도 및 확장성이 매우 좋아졌다. 이에 따라 로봇 하드웨어에 MBL용 온도 센서나 자이로 센서도 호환되어 데이터 로깅이 가능해졌다. 데이터 로깅이 가능한 교육용 로봇으로 학생들은 과학적인 탐구 예측, 수집, 데이터 분석이 가능한 실험을 할 수 있게 된 것이다. 이에 본 연구에서는 학급 SNS와 스마트폰을 활용한 ‘Smart r-Learning’에 데이터로깅이 가능한 교육용 로봇을 도입하여 과학 프로젝트 수업을 개발하고 적용했다.데이터 로깅 활용 Smart r-Learning 프로젝트 수업을 초등학교 5학년 학생들에게 적용한 결과 논리적 사고력 6개 영역 중 4개 영역이 유의미하게 향상 된 것으로 나타났다.
Due to the recent development of educational robot hardwares, processing speed and scalability have been greatly improved. Thus, the robot hardwares that are compatible with temperature sensor for MBL and gyro sensor made a data logging possible. Students can conduct an experiment on scientific research and prediction, collecting and data analysis with robots that can process data logging. Therefore this research constructed and adopted science project class that introduced a Smart r- Learning that utilizes Class SNS and smartphone. As a result of applying a data logging smart r-Learning to elementary school 5th graders, it has shown that the students' logical thinking ability four of the six areas have been improved in t-test.



게이미피케이션에 기반한 라이프로깅 콘텐츠의 사용성 평가 분석

곽소정, 권지은

한국컴퓨터게임학회 한국컴퓨터게임학회논문지 제30권 제3호 2017.09 pp.51-57

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This paper will verify the improvement in Life-logging application usage rate with the gamification factor as an element. We classified the gamification factor into three groups, such as, “Acting”, “Achievement”, and “Social”, and a total of four analysis were done consisting of each gamification factor separately and one all together. Usability evaluation questionnaires were conducted to verify functionality and satisfaction. It is expected that effective use of the gamification factor for the Life-logging application will serve as a basis for providing a more enjoyable behavior and application usage rate.



라이프로깅 애플리케이션에서의 펀웨어 요소

곽소정, 권지은

한국컴퓨터게임학회 한국컴퓨터게임학회논문지 제29권 제3호 2016.09 pp.65-71

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Communication using SNS(Social Network Service) with others has become the trend through quantified-self - users’ explicit and implicit data are measured, recorded and automatically stored- as life-logging application industry has been grown. As the life-logging application is focused on recording and sharing the data, regular and simple interactive functions are used rather than dynamic and tense features. The game elements are used popularly in the mobile applications. Also, funware factors have begun to be applied in life-logging application. This paper intends to analyze for 20 life-logging applications with sorting collection, point, feedback, exchanges, customization in funware factors. The result of this analysis is that ‘Point’ factor is far better than others, and ‘Exchanges’ and ‘Customization’ factor common in the funware. Specially, the data report in the ‘Point’ factor shows the result visually by analyzing the data based on characteristics of life-logging application. However, if Exchanges and Customization factor are used in application development and design, the value of life-logging concept is more increased. Therefore, attempts which is not a simple function as users’records but enjoyable actions are expected in design of life-logging application that is consistently rising.



라이프로깅 애플리케이션을 위한 게이미피케이션 요소 정립

곽소정, 권지은

한국컴퓨터게임학회 한국컴퓨터게임학회논문지 제29권 제4호 2016.12 pp.43-48

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Recently, application content which is applied by gamification elements has been enhanced. However, gamification elements has not been strongly applied in the life-logging application. Because, this application is not focused on fun, but on the visualization of the data and the records of the user's external or internal information. Therefore, the purpose of this paper is to establish the gamification elements for 'life-logging' service. To do this, the gamification elements were extracted and classified by surveys, exploratory factor analysis and confirmatory factor analysis. As a result, the gamification elements for life-logging applications are formed by three factors; ‘Acting’, ‘Achievement’, and ‘Social’. As the established gamification elements are effectively applied to life-logging applications, it is expected to be a basis for helping to provide enjoyable behavior and usability beyond the common function of user record.



모바일 앱 사용행태 분석을 위한 역컴파일 및 역어셈블 데이터 로깅

김명준, 남양희

한국정보기술응용학회 JITAM Vol.21 No.4 2014.12 pp.127-139

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This study presents a logging method to trace the usage patterns of existing smartphone apps. The actual smartphone app itself, not a specially developed similar app with usage logging, would be used best for the experiment of observing the usage patterns. For this purpose, we used a method of injecting logging codes into existing smartphone app. Using this method, we conducted an experiment to trace usage patterns of a commercial IPTV app, and found that the method is very useful for acquiring detail usage log without influencing participants.



임도 업무 활성화돼야


숲과문화연구회 숲과 문화 제11권 제6호 통권66호 2002.12 pp.4-6

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TPM 기반 위변조 방지형 디지털 운행기록 장치 설계 및 구현


한국차세대컴퓨팅학회 한국차세대컴퓨팅학회 논문지 Vol.9 No.4 2013.08 pp.6-13

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디지털 운행기록장치(Digital Tachograph) 보급의 확산에 따라, 신뢰성이 보장된 방법으로 차량 데이터를 기록하는 기술이 요구되고 있다. 특히 2012년 한국에서는, 개정된 교통안전법에 따라 업무용 차량의 디지털 운행기록 장치가 의무화 되었다. 디지털 운행기록장치의 다음 단계에 있어, 네트워크 연동형 디지털 운행기록 장치가 개발되었으며, 이는 실시간 운행 정보(주행시간, 유휴시간, 브레이크 타이밍 등)의 수집 및 그에 기반한 서비스를 제공하기 위한 것이다. 본 논문에서는 위변조 방지형 디지털 운행기록 장치를 디자인하고 구현하였다. 위변조 방지형 디지털 기록을 위해 TPM의 모노토닉 카운터를 활용한 해시체인 기반 로깅 기법을 제안하였으며, 이는 디지털 운행기록장치가 장착된 차량의 운전자조차도 데이터를 위조 또는 수정할 수 없는 보안 기능을 제공한다. 본 논문에서 제안한 방법의 가능성과 연산 효율성을 테스트하기 위해, ARM 프로세서 기반 임베디드 보드에 프로토타입을 구현하였으며, 초당 995.85 로깅 트랜젝션을 처리할 수 있다.
The ability to record the driving data in a tamper-resistant manner is a precursor to widespread deployment of digital tachograph because the driving data is potentially sensitive and must be verifiably accurate. The deployment of the digital tachograph has been mandatory for all business vehicles in Korea since 2012. As its next step, a networked digital tachograph has been developed for real-time monitoring of the driving time, breaks, as well as rest periods undertaken by a driver. In this paper, we propose a tamper-resistant logging system for the networked digital tachograph, called T-Box. To provide the tamper-resistant logging, we devised a hash-chain based logging mechanism using a monotonic counter of TPM, in which even the drivers cannot modify or falsify the driving data. To evaluate the feasibility and computation efficiency of the proposed logging mechanism, we built a prototype on an ARM-based embedded board. The evaluation results show that the proposed method can perform 995.85 logging transactions per second.


빅데이터 분석/처리에 따른 생활밀착형 서비스의 프라이버시 보호 측면에서의 구조혈 연구

강장묵, 송유진

한국인터넷방송통신학회 한국인터넷방송통신학회 논문지 제14권 제1호 2014.02 pp.189-193

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네트워크 서비스는 로컬서비스와 결합하면서 생활밀착형 서비스로 발전하고 있다. 생활밀착형 서비스는 기존 의 모바일 서비스와는 달리, 위치정보와 로컬정보 그리고 소셜 네트워크서비스 정보 등을 모아 개인화된 서비스를 제 공할 것으로 예상된다. 여러 정보를 모아 처리하는 과정에서 빅데이터 기술, 클라우드 기술 등이 필요하다. 이미 이에 대한 효율성 높은 알고리즘이 연구되고 있으나 반면, 생활 밀착형 서비스 모델 또는 빅데이터 환경에서의 프라이버시 보호 모델에 대한 연구는 상대적으로 미흡한 편이다. 이 글은 생활밀착형 서비스에 활용될 빅데이터 기술이 야기하는 프라이버시 문제에 대하여 구조혈 중심으로 다룬다.
SNS (Social Network Service) has evolved to life-friendly service with the combination of local services. Unlike exsiting mobile services, life-friendly service is expected to be personalized with gathering of local information, location information and social network service information. In the process of gathering various kinds of information, Big-data technology and Cloud technology is needed. The effective algorithem has researched for this already, however the privacy protection model hasn’t researched enough in life-friendly service or big-data using circumstance. In this paper, the privacy issue is dealt with in terms of ‘Structure hole’, and the privacy issue comes from big-data technology of life-friendly service.



산지폐잔재의 현지 활용을 위한 한국형 조립식 탄화장치의 경제성분석


강원대학교 산림과학연구소 Journal of forest and environmental science 제23권 제1호 2007.08 pp.11-19

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이 연구에서는 소경목 및 불량목 등 목재폐잔재가 발생하는 산지에서 이들을 활용하여 목탄・목초액을 생산할 수 있는 이동식 조립식 탄화로를 개발하고 실용화하는 데 필요한 경제성을 분석하였다.경제성분석을 위해서B/C율을 사용하였고 가격과 이자율의 변화에 따른 감응도 분석을 하였다. 우리나라 실정에 맞는 이동식 조립식 탄화로의 형태는 운전,탄화시간,제품의 질,수집능력 등을 고려했을 때 원통형인 것으로 나타났다.적정 규모는3단 규모에 총중량 400 kg, 크기는 2(직경) × 2.4 m(높이), 1 Batch 당 탄재량은 1,500 kg, 목탄생산량은 300 kg, 목초액은 45 ℓ, 탄화소요시간은 48-52시간,장치의 수명은5년이다. 탄화로의 수익성분석결과 1대를 설치하고 Batch를 100회(300일), 80회(24일), 70회(210일)로 할 경우 어느 경우라도B/C율이1보다 큰 것으로 나타났다.수익이 발생하는 시점은100회 및 80회는 모두 4년, 70회는 5년부터인 것으로 나타났다. 그러나 발생하는 수익액이 작아 최소 2대를 운용해야 하는 것으로 나타났다. 산지에서 생산되는 제품가격은 최소 목탄은 kg당 750원, 목초액은 ℓ당 700원이 되어야 매년 수익이 발생하여 경제성이 있는 것으로 나타났다.
This study was designed to analyze the economic efficiency that is needed to develop and make practical application of a mobile carbonization apparatus, which are able to make wood charcoals and pyroligneous liquid at the logging field with debris. B/C ratio was employed to make an economic analysis, and sensitivity analysis with respect to change in price and interest rates also was made. Cylindrical type is the proper type for the mobile carbonization apparatus, when important factors such as handling capacity, a carbonization time, quality of products and assembling ability were considered. It weighs 400 kg, and a three-step fold-up equipment. The size of 2 (diameter) by 2.4 m (height) carbonization equipment required 1,500 kg wood debris per batch. A forty-eight to fifty-two carbonization time produced 300 kg of wood charcoal and 45 ℓ of pyroligneous liquid. The average life span of the apparatus was 5 years. If the private enterprise operated 100 batch, 80 batch, and 70 batch with one apparatus, the B/C ratio of them was greater than 1, indicating that the production is economically feasible. The period to achieve a break-even point required to be 4 years in case of 100 and 80 batches to 5 years in case of 70 batch. But the private enterprises should operate at least two apparatus for the profits. Also, if the production was to be profitable, the prices of wood charcoals and pyroligneous liquid should be at least 750 won per kg and 700 won per liter.



Assessment of Timber Harvest in Tropical Rainforest Ecosystem of South West Nigeria and Its Implication on Carbon Sequestration

Victor A. Adekunle, Amadu Lawal, Adewole O. Olagoke

강원대학교 산림과학연구소 Journal of forest and environmental science 제30권 제1호 2014.02 pp.1-14

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Timber harvest in natural forests and its implications on carbon sequestration were investigated in the Southwestern Nigeria. Data on timber harvest from forest estates for a 3-year period were collected from the official record of States’ Forestry Department. The data registered the species, volume and number of timbers exploited during the study period. The data were analyzed accordingly for rate of timber harvest and carbon value of the exploited timbers using existing biomass functions. Values were compared for significant differences among states using one way analysis of variance. The results showed that the most exploited logs, in terms of volume and number of trees, have the highest amount of carbon removal. There was a variation in type of timber species being exploited from each state. The total number of harvested trees from Oyo, Ondo, Ogun, Ekiti and Osun were estimated at 100,205; 111,789; 753; 15,884 and 18,153 respectively. Total quantity of carbon removed for the 3-year period stood at 2.3 million metric tons, and this translated to 8.4 million metric tons of CO2. The annual carbon and CO2 removal therefore were estimated at 760,120.73 tons and 2.8 million tons/ year respectively. There were significant differences (p<0.05) in the amount of CO2 removed from the five states. Based on our result, we inferred that there is increasing pressure on economic tree species and it is plausible that they are becoming scarce from the forests in Southwestern Nigeria.. If the present rate of log removal is not controlled, forests could become carbon source rather than carbon sink and the on biological conservation, wood availability and climate change may turn out grave. For the forest to perform its environmental role as carbon sink, urgent conservation measures and logging policies are needed to be put in place.



Lightweight Message Logging Protocol for Distributed Sensor Networks

Jinho Ahn

보안공학연구지원센터(IJSH) International Journal of Smart Home Vol.6 No.2 2012.04 pp.71-76

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Among a lot of rollback-recovery protocols developed for providing fault-tolerance for long-running distributed applications, sender-based message logging with checkpointing is one of the most lightweight fault-tolerance techniques to be capable of being applied in this field, significantly decreasing high failure-free overhead of synchronous logging by using message sender's volatile memory as storage for logging its corresponding message. However, attempting to apply this technique into large-scale and geographically distributed systems such as broker-based sensor networks, etc., the following problems should be addressed; reducing the number of control and data messages passing on core networks occurring during its fully message logging and recovery procedures. In this paper, we present a lightweight message logging protocol for distributed sensor networks to solve all of them by employing the current and future distributed systems' architectural features mentioned above.


Discrete Poisson Noise Logging Image Repair Based on Schatten Matrix Operator

Zhang Jian, Yang Jie, Zhang bin

보안공학연구지원센터(IJMUE) International Journal of Multimedia and Ubiquitous Engineering Vol.11 No.3 2016.03 pp.81-92

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In order to solve the problem that the present logging image reconstruction algorithm has certain staircase effect and ring effect during the discrete Poisson noise image repair process, a noise reduction algorithm based on Schatten matrix operator for discrete Poisson logging image is proposed in this article. Specifically, Schatten norm matrix of Hessian operator is adopted to estimate each pixel value of the image, and meanwhile the non-quadratic regularization function is adopted to eliminate the staircase effect; then Poisson measurement model is integrated with Schatten regularization function to construct the minimum objective function; then norm proximal mapping estimation algorithm is defined and is adopted to decouple the data fidelity item and the regularization matrix in the objective function, thus to recover the image. The simulation result shows: compared with present denoising technology, the algorithm proposed in this article has better repair effect and greater similarity in the aspect of processing the discrete Poisson noise.


Development of the Logging System for LKAS Electronic Control Unit Algorithm Verification

Hyoung-Keun Park

보안공학연구지원센터(IJCA) International Journal of Control and Automation Vol.9 No.2 2016.02 pp.9-18

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Recently, car makers and the governmental agencies make a greater investment in and efforts to develope the application technologies for "Advanced Safety Vehicle" than ever, it is very necessary to verify each of algorithms applied to the core ECUs as existing cars have rapidly evolved into sophisticated assembles of computer devices equiped with tens of ECUs while geared with high-tech IT technologies. Therefore, this study developed a verification logging system for the electronic control algorithm of a lane keeping assistance system camera. The developed system can not only acquire the lane information of a road through the camera, but also analyze such information and adjust a vehicle automatically through controlling the control board.


Design of City Logging System using Searchable Image Encryption System of Streaming Service

NamHo Kim, SeongHo Lee

보안공학연구지원센터(IJSH) International Journal of Smart Home Vol.8 No.2 2014.03 pp.7-14

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In this paper, we propose a city-logging system to collect various types of data around the roads using mobile observation equipment. Since the collected image data from CCTV contains several things which can violate someone’s privacy, we present a secure method to search CCTV image using searchable image encryption system. In addition, we illustrate a city-info service which can be provided by analyzing the collected data. Implementation and testing of the proposed system will be carried out in future.


Designing Mobile Data Logging Framework using Ubiquitous Computing Environment

Dr. S. P. Tripathi, Prof.(Dr.) J. B. Singh, Vivek Kumar Singh

보안공학연구지원센터(IJHIT) International Journal of Hybrid Information Technology Vol.2 No.4 2009.10 pp.19-24

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The focus of this paper is to develop a Ubiquitous framework which can record the incoming calls and sort them according to the service provider. This information will provide subsequent traffic on a particular network and hence will be useful in deciding the bandwidth allocation. Second part of the paper deals with application of constraint on the ontology using OCL thereby providing a strict check on accessing and filtering of the information.


Virtual Sender-based Message Logging for Large-scale Ubiquitous Sensor Network Systems

Jinho Ahn

보안공학연구지원센터(IJMUE) International Journal of Multimedia and Ubiquitous Engineering Vol.9 No.5 2014.05 pp.37-48

※ 원문제공기관과의 협약기간이 종료되어 열람이 제한됩니다.

Sender-based message logging can considerably lower high failure-free overhead of receiver-based message logging resulting from synchronously logging each message into stable storage by using volatile memory of its sender as storage for logging. This beneficial feature can be obtained at the expense of extra communication costs required for allowing message senders to get receive sequence numbers of the messages from their receivers and confirm them with the receivers and slowness and complexity of recovery of each failed process coming from its obtaining message log from the corresponding senders. However, attempting to apply sender-based message logging into large-scale ubiquitous sensor networks requires reducing the number of messages passing on core networks during its message logging and recovery procedures. This paper presents a scalable virtual sender-based message logging algorithm to solve this problem by enabling the broker elected in a group of nodes as virtual sender to localize both of the logging and recovery procedures to a maximum. We show how this algorithm can guarantee the system consistency in case of sequential failures and perform better than the conventional one in terms of message overhead.

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