• 정보교육학회논문지
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• 제26권6호
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• pp.533-541
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• 2022

코로나19로 인해 교육 현장에서는 비대면 수업이 정착되었다. 이에 온라인 수업, 블렌디드 러닝 등의 방법이 도입 되었으며, 학습자와 교수자, 학습자와 학습자 간 상호작용을 촉진하는 메타버스가 주목받기 시작했다. 메타버스는 비대면 방식에서 나타난 물리적 환경에서 오는 교육의 한계를 극복할 수 있어 초등교육 학습자들에게 보다 적합한 교육 방안이 될 수 있다. 메타버스를 교육 현장에 활용하기 위해서는 예비교사들의 사용의도가 중요하다. 본 연구에서는 기술수용모델에 기반하여 예비교사의 교육역량과 메타버스 사용의도 간의 구조적 관계를 분석하여, 새로운 테크놀로지에 대한 유연성, 교수효능감, 테크놀로지 내용교수지식(TPACK)의 영향 요인을 살펴보았다. 예비교사 240명을 대상으로 하였고, 최종 수집된 183명의 자료를 분석에 사용하였다. 연구 결과 예비교사의 메타버스 교육역량 중 유연성과 TPACK은 인지된 용이성을 매개하여 메타버스의 사용의도에 영향을 미치는 경로는 유의하였다. 이와 관련 논의와 예비교사들의 메타버스 사용의도에 도움을 줄 수 있는 이론적, 실천적 시사점을 제시하였다.

• International journal of advanced smart convergence
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• 제12권4호
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• pp.464-469
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• 2023

The government has set the mechanization of paddy agriculture as a national task, aiming to achieve over 70% by 2025. The main objective is to stabilize the farming costs of rural households due to the aging and feminization of rural areas, as well as the shortage of agricultural labor. In response to this, the Korea Rural Economic Institute operates a farm machinery rental business. However, there are challenges in selecting and managing rental machinery, including issues related to labor, costs, verification, and time. Additionally, there is a limit to upgrades, and overseas models are being imported and used for transplanters and rice planters, which do not conform to domestic standards and face maintenance difficulties. In order to solve the difficulties of the agricultural machine rental business, we intend to develop an application that shares domestic and foreign machines purchased and used by individuals at a low cost and use them in gun-level administrative districts.

• Current Photovoltaic Research
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• 제9권2호
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• pp.36-44
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• 2021

To endorse the reliability and durability of the solar photovoltaic (PV) device several tests were conducted before exposing to the outdoor field in a non-ideal condition. The PV module has high probability that intend to perform adequately for 30 years under operating conditions. To evaluate the long term performance of the PV module in diversified terrestrial conditions, one should use the outdoor performance data. However, no one wants to wait for 25 years to determine the module reliability. The accelerating stress tests performing in the laboratory by mimicking different field conditions are thus important to understand the performance of a PV module. In this review, we will discuss briefly about different accelerating stress types, levels and prioritization that are used to evaluate the PV module reliability and durability before using them in real field.

• 복식
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• 제56권4호
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• pp.96-107
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• 2006

This survey was performed to gain basic information for the development of new protective clothing of high acceptability in pesticide splaying among small size farmers. The rate of protective clothing wearing was low during pesticide spray although they understand its necessity. The reason for this low acceptability was related to the heat stress and reduced work efficiency deriving from wearing protective clothing. Instead of wearing they tend to carry out spray work while the ambient temperature is not to high. In the similar context, they rather intend to spray in consideration of weather condition instead of wearing protective clothing in the future. However, they are willing to purchase protective clothing if desirable products are developed: the clothing need to be efficient in both protection and work performance; the fanciness in design is not a requisite. This survey result will provide information necessary for the direction of new protective clothing development.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2008년 추계학술발표대회 논문집
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• pp.448-451
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• 2008

This study is under doing to suggest application manual using assembling reference plane design & standard finish material basis upon material classification code as a tool of a linkage between building design and construction standarization in order to enlarge the applicability of house building material that is produced by the module plant. We can say the goal of building standardization intend not only the improvement of construction productibility but also guarantee of subsequent performance through automatization basis upon informationalization of building design. For a etabilishing of this condition, it is neccessary to link the standardization's result of material--design--construction field. According to this neccessity, we are going to suggest information factor that can make relative business manager easily approach to the standardization practical task.

• 전자통신동향분석
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• 제38권3호
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• pp.66-77
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• 2023

Governments intend to use the public warning system to deliver timely and accurate information using accessible communication technologies for protecting the population and reducing damage to life and property. In particular, many countries implement system interworking with smartphones to notify of disasters or emergencies. In Korea, since 2020, due to the influence of the coronavirus disease, frequent emergency text messages led people to turn off related notifications, and complaints for receiving irrelevant messages from nearby warning areas have increased. Therefore, technical improvements for issuing more accurate disaster information to a specific region should be devised through a geography-based emergency disaster message transmission service. We analyze development trends of public warning systems and service cases of geography-based emergency text transmission services in various countries.

• 대한임베디드공학회논문지
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• 제16권5호
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• pp.171-177
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• 2021

It is difficult to accurately extract features of pedestrian because the pedestrian is photographed at a crosswalk using a camera positioned higher than the pedestrian. In addition, it is more difficult to extract features when a part of the pedestrian's body is covered by an umbrella or parasol or when the pedestrian is holding an object. Representative methods to solve this problem include Object Detection, Instance Segmentation, and Pose Estimation. Among them, this study intends to use the Pose Estimation method. In particular, we intend to increase the recognition rate of pedestrians in crosswalks by maintaining the image resolution through HigherHRNet and applying the foot estimation technique. Finally, we show the superiority of the proposed method by applying and analyzing several data sets covered by body parts to the existing method and the proposed method.

• International Journal of Computer Science & Network Security
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• 제21권9호
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• pp.346-353
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• 2021

In this proposal, we aim to enhance the security of systems accounts by improving the authentication techniques. We mainly intend to enhance the accuracy of the one-time passwords via including voice biometric and recognition techniques. The recognition will be performed on the server to avoid redirecting voice signatures by hackers. Further, to enhance the privacy of data and to ensure that the active user is legitimate, we propose to periodically update the activated sessions using a user-selected biometric factor. Finally, we recommend adding a pre-transaction re-authentication which will guarantee enhanced security for sensitive operations. The main novelty of this proposal is the use of the voice factor in the verification of the one-time password and the various levels of authentications for a full-security guarantee. The improvement provided by this proposal is mainly designed for sensitive applications. From conducted simulations, findings prove the efficiency of the proposed scheme in reducing the probability of hacking users' sessions.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1999년도 추계종합학술대회 논문집
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• pp.1067-1070
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• 1999

Anesthesia gas to pour to patients affects the flow and volume as the pressure difference of an oxygen and an anesthesia gas. An anesthesia gas, being injurious and polluting an environment, must control the pressure of an oxygen gas because of being used by closing up tight. But a pressure sensor to use for measuring an oxygen gas appears other pressure as the characteristic and the error difference of elements to use for implementing an system. A medical machine such as an anesthesia ventilator must be accurate because of using for the person's body. So we intend to implement an system for a sensor pressure measurement not to be change regardless of an environment. This papers is the target that a sensor pressrue measurement to be changed in environment is equal to actual sensor pressure measurement. So an implemented system is using analog filter and digital filter to reduce a noise. And we are using auto-zeroing and calibration to correct a sensor pressure which is changed in environment. Through such a process we increase the accuracy and the confidence of an anesthesia ventilator by controlling the flow of an anesthesia gas.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2022년도 추계학술대회
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• pp.427-429
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• 2022

최근 메타버스 기술은 게임, 엔터, 제조, 유통, 광고, 교육 등 다양한 서비스 산업에서 활용되고 있다. 메타버스 콘텐츠에 사용되는 디바이스의 지속이용 상관관계 연구는 아직 미흡한 상태다. 메타버스에 더욱더 몰입할 수 있게 자연스러운 움직임과 사용하기 편한 입력장치 계발이 필요하다. 플로우를 기반으로 메타버스 콘텐츠와 디바이스의 지속이용에 관한 주제로 연구하였다. 독립변수인 Flow의 구성 요인을 현실감, 몰입감, 상호작용으로 설정하였다. 설문조사 기관을 통해 500명의 메타버스 남녀 이용자들의 자료를 연구에 활용하고자 한다. 메타버스 콘텐츠와 디바이스의 지속이용을 높이는 플로우 요인 중 가장 큰 영향력으로 작용하는 요인이 무엇인지를 연구하였다. 본 연구 결과를 통하여 차세대 메타버스 콘텐츠와 디바이스 산업의 방향성 수립에 도움이 되고자 한다.