• 한국산업정보학회논문지
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• 제16권5호
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• pp.73-81
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• 2011

대학에서 제공되고 있는 교육을 살펴보면 개별적인 학생들의 요구를 만족시키기 어렵다. 이는 대학교육이 한명의 서비스제공자에 의해 많은 사람들에게 동시에 제공되기 때문으로 볼 수 있다. 이를 감안하여 학생들이 보다 다양한 정보통신기술을 활용할 수 있다면 교육이 제공되는 과정이나 컨텐츠에 대해 더 만족할 수 있을 수 있다고 가정하였다. 연구에서는 학생들의 기술수용성 정도가 관계품질, 교육서비스품질, 교육서비스만족에 미치는 영향을 살펴보고 학생들의 정보통신기술의 활용정도가 높고 낮음에 따라 이들 관계에 어떠한 영향을 미치는지에 대해서도 살펴보았다. 검증결과 기술수용성이 높으면 관계품질, 교육서비스품질을 높일 수 있고, 관계 품질과 교육서비스품질도 교육서비스만족을 높일 수 있다고 제시되었다. 정보통신기술의 활용정도도 이들 관계에 영향을 미치는 것으로 나타났다. 본 연구는 교육인프라가 부족한 지방의 중소 도시에 위치한 대학에서 연구를 진행함으로써 향후 해당 컨텐츠를 교육에 활용하게 되었을 경우 더 많은 효과를 볼 수 있으리라 생각된다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -2
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• pp.979-982
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• 2002

Compressing image data by using Vector Quantization (VQ)［1］-［3］will compare Training Vectors with Codebook. The result is an index of position with minimum distortion. The implementing Random Codebook will reduce the image quality. This research presents the Splitting solution ［4］,［5］to implement the Codebook, which improves the image quality［6］by the average Training Vectors, then splits the average result to Codebook that has minimum distortion. The result from this presentation will give the better quality of the image than using Random Codebook.

• International Journal of Advanced Culture Technology
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• 제8권4호
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• pp.51-57
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• 2020

A propeller-based seesaw system is a system that can represent one of axis of four propeller drones and its stabilization has been replaced by intelligent control system instead of often used control methods such as PID and state space. Today, robots are increasingly use machine learning methods to adapt to their environment and learn to perform the right actions. In this article, we propose a Q-learning-based approach to control the stability of a seesaw system with a propeller. From the experimental results that it is possible to fully learn the balance control of a seesaw system by correctly defining the state of the system, the actions to be performed, and the reward functions. Our proposed method solves the seesaw stabilization.

• JSTS:Journal of Semiconductor Technology and Science
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• 제17권1호
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• pp.110-119
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• 2017

This paper describes a CMOS image sensor (CIS) with dual correlated double sampling (CDS) and column-parallel analog-to-digital converter (ADC) and its measurement method using a field-programmable gate array (FPGA) integrated module. The CIS is composed of a $320{\times}240$ pixel array with $3.2{\mu}m{\times}3.2{\mu}m$ pixels and column-parallel 10-bit single-slope ADCs. It is fabricated in a $0.11-{\mu}m$ CIS process, and consumes 49.2 mW from 1.5 V and 3.3 V power supplies while operating at 6.25 MHz. The measured dynamic range is 53.72 dB, and the total and column fixed pattern noise in a dark condition are 0.10% and 0.029%. The maximum integral nonlinearity and the differential nonlinearity of the ADC are +1.15 / -1.74 LSB and +0.63 / -0.56 LSB, respectively.

• Agribusiness and Information Management
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• 제8권2호
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• pp.9-15
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• 2016

In several industries, including the agriculture industry, information and communication technology (ICT) expenditure has been gradually increasing. This study explores the ICT investment of Korean agricultural corporations, and examines the effect of ICT investment on their profitability using an IT portfolio framework. As the organizational capabilities and environment in which ICT is used is critical in examining its impact, the IT-savvy level is used as a moderator. An increase in ICT investment size results in a significantly positive effect on profitability in organizations with higher IT-savvy levels, whereas there is no effect in organizations with lower IT-savvy levels. This study shows the necessity of understanding the structure of ICT investments in the agriculture industry, and suggests the importance of organizational capabilities and environment in making best use of ICT.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2004년도 ICCAS
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• pp.561-564
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• 2004

This paper proposes a new application of Kalman filter to estimate speed sensorless DC motor. Kalman filter can estimate the system state variables accurately; even the system input is disturbed with noise. In the design, the mathematical model of DC motor in discrete state-space form will be created; the speed of DC motor which is considered as state variable and can be estimated by using Kalman filter. In the experiment; TMS320C31 floating point digital signal processor is used for hardware implementation, the input is disturbed with/and without white noise in the experiment. The experimental results show the speed of DC motor which is estimated by Kalman filter has good accuracy when compared with the results from tacho-meter.

• Journal of the Korean Data and Information Science Society
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• 제23권5호
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• pp.927-937
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• 2012

본 연구는 특수교사들의 정보통신기술 (ICT; information & communication technology) 활용에 관한 실태 및 인식을 알아보기 위하여 특수교사들을 대상으로 설문조사를 실시하였다. 총 103부의 설문지를 토대로 교사들의 ICT 활용 현황과 수업에서 ICT 활용에 대한 태도와 시각, ICT 활용과 관련된 교원 연수의 필요성과 연수에 필요한 교육 내용을 분석하였다. 특히 ICT의 활용 교과목이 대학의 특수교육과에 반영된 시점을 기준으로 교직경력을 구분하여 그 차이를 검증하였으며 두 집단에 대한 ICT 활용 현황과 수준은 차이가 있는 것으로 분석되었다.

• International Journal of Advanced Culture Technology
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• 제8권1호
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• pp.19-25
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• 2020

This article describes the automated incubator designs for white mushrooms growing. Mongolia has a very long and cold winter, so the process of growing mushrooms is short. Therefore, we aim to design an automated incubator system that has created a favorable artificial environment for mushroom growing by examining the necessary conditions for mushroom growing. This system was designed to be able to hold for some time the required levels of soil moisture, air humidity, soil temperature, air temperature, and CO2 levels. This article presents the results of a system-based experiment that allows you to grow mushrooms for 30 days without human interference.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.852-856
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• 2005

This paper proposes a new design of the ECG simulator with high resolution by using small amount of memories based on discrete least square estimation equations instead of reading the stored data inside the look-up table. The experimental results have shown that the ECG simulator using discrete least square estimation equations can display the bipolar limb leads ECG signals with low PRD (percent root-mean-square difference) while taking the less amount of memories than the previous method which used the look-up table to store ECG data for ECG simulation.

• Journal of Information Science Theory and Practice
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• 제10권spc호
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• pp.123-134
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• 2022

Existing network cryptography systems are threatened by recent developments in quantum computing. For example, the Shor algorithm, which can be run on a quantum computer, is capable of overriding public key-based network cryptography systems in a short time. Therefore, research on new cryptography systems is actively being conducted. The most powerful cryptography systems are quantum key distribution (QKD) and post quantum cryptograph (PQC) systems; in this study, a network based on both QKD and PQC is proposed, along with a quantum key management system (QKMS) and a Q-controller to efficiently operate the network. The proposed quantum cryptography communication network uses QKD as its backbone, and replaces QKD with PQC at the user end to overcome the shortcomings of QKD. This paper presents the functional requirements of QKMS and Q-Controller, which can be utilized to perform efficient network resource management.