• 통합자연과학논문집
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• 제7권1호
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• pp.62-66
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• 2014

This study aims to implement the emergency monitoring robot system which predicts the current state of the patients without visiting the medical institutions by measuring the basic health status of the user's blood pressure, heartbeat, and basic health status of body temperature in the disaster emergency situation based on the Smart Grid. By arranging a large number of sensor(blood pressure, heartbeat, body temperature sensor) and measuring the bio signs, so the attached wireless XBee sensor can be stored in DB of robot, and it aims to draw the current state of the patients by analysis of stored bio data. Among 300 data obtained from the sensor, 1st data to 100th data were used for learning, and from 101st data to 300th data were used for assessment. 12 results were different among the total 300 assessment data, so it shows about 96% accuracy.

• Journal of Multimedia Information System
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• 제8권3호
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• pp.191-196
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• 2021

Computational thinking refers to the process and method of solving everyday problems using computers. When teaching a computational thinking class for computer majors and non-majors at university, the easiest example to deliver the concept of computational thinking is sorting. Sorting is the concept of arranging given data in order. In this work, we have implemented four visualized sorting algorithms that anyone can easily use. In particular, it helps to understand the difference between the algorithms by showing the number of comparisons and exchanges between elements, which are the criteria for evaluating the performance of the sorting algorithm in real time. It was confirmed that the practice of using the sorting visualization app developed in this research contributed to the improvement of students' understanding of computational thinking.

• 디지털산업정보학회논문지
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• 제14권4호
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• pp.149-154
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• 2018

A game story that used to be free needs a work of concrete and artificial organizing and arranging these days. This is because a game story is frequently made into a new genre such as a movie or an animation. As shown in many previous studies, most of the movies made from successful digital games failed to receive satisfying box office results. To overcome this, narratively completed storytelling should be presented from the development phase of a game. The methods are as follows: It is necessary to maximize the synergy effect through the interaction between storytelling experts, game developers, animators, and movie producers in developing a game. This will help to create a game with more sophisticated and complete narrative structure than now. It is necessary to secure the diversification of game genres. Currently in Korea, online games are unusually leading the game industry. PC games or console games are more advantageous than online games for putting a finished narrative structure into a game.

• 한국연안방재학회지
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• 제4권1호
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• pp.1-6
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• 2017

Most of the short period waves are blocked by the breakwaters when the short period irregular waves propagate into the ports. However, nonlinear irregular wave numerical experiments show that the long waves generated by the nonlinear interaction is predominant in the port. Seiches phenomenon in Geumjin Fishing Port is very similar to 60 and 300 second harbor oscillations. By arranging the inner breakwater of the proper length in the inside of the port, it is possible to effectively reduce seiches, as well as the short-period wave, and significantly improve the harbor tranquility. In the case of rectangular basin type such as the Geumjin Fishing Port, the multi-directional irregular wave numerical model should be used for the investigation and countermeasures for the harbor tranquility.

• 드라이브 ㆍ 컨트롤
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• 제17권4호
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• pp.54-71
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• 2020

In light of the environmental challenges, energy-saving strategies are currently under investigation in the construction industry. This paper focuses on the energy-saving method used in the hydraulic system based on independent metering (IM) technologies, which can overcome the lost energy at the main control valve of the conventional electrohydraulic servo system. By scientifically arranging the proportional valves, the IM system can individually control the flow rate of the inlet and the outlet ports of the actuators. In addition, the IMV system can be used to effectively regenerate energy under different operating modes, thereby saving more energy than conventional hydraulic systems. Therefore, the IMV system has a great potential to improve the energy efficiency of hydraulic machinery. The overall IMV system, including the configuration, proportional valve, operation mode, and the control strategy is introduced via state-of-the-art hydraulic technologies. Finally, the challenges of IM systems are discussed to provide researchers with directions for future development.

• East Asian mathematical journal
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• 제39권2호
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• pp.251-270
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• 2023

This study examined what questions posed, and for arranging the matters, what decisions made, what practices put into by elementary preservice teachers during his or her enacting and reflecting mathematics teaching. Analysis of the study focused on the mathematics instructions practiced by four participants in practicum for senior students. Their own questions raised by each one in the instructional designs, performances, and reflections were picked out and categorized by five dimensions of mathematics instruction; the nature of classroom tasks, the role of the teacher, the social culture of the classroom, mathematical tools as learning supports, and equity and accessibility. Their instructional decision-makings and action-takings for answering to these questions were analised.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2022년도 추계학술대회
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• pp.550-552
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• 2022

비디오 월 컨트롤러는 여러 개의 모니터를 연속적으로 배치하여 하나의 큰 스크린으로 표출하는 특수한 형태의 멀티 모니터를 가진다. 멀티스크린에 여러 영상을 동시에 표출하고자 하는 경우, 운영자는 표출할 영상과 모니터를 미리 매핑하여 저장한다. 멀티스크린의 모니터 개수가 많지 않은 소규모의 시스템에서는 영상과 모니터의 매핑 작업이 단순하지만, 모니터의 개수가 늘어날수록 매핑의 경우의 수가 늘어나므로 업무효율이 저하된다. 이에 본 논문에서는 연관 규칙 기반의 학습을 이용하여 영상을 표출할 모니터를 추천하여 매핑 작업의 효율성을 향상시키는 모델을 제안한다.

• 한국산업융합학회 논문집
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• 제26권5호
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• pp.945-952
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• 2023

In this study, the sand casting process was applied to design the gating system and perform casting simulation in order to domestically produce the submarine mast cover. Based on simulation results, casting experiments were conducted to produce a soundness prototype. The design concept of the mast cover's gating system was based on the design of bell casting. By arranging eight tower-type gates in a circle at 45° intervals, the flow of melt flowing into each gate was uniform and did not mix with each other, and the velocity of melt was also uniform. The mast cover made of Ni-Al-Bronze alloy has no unfilled parts. However, small porosities and flow marks occurred on the surface in several places. Yield strength and ultimate tensile strength are 279.3 MPa and 675.7 MPa, respectively, and elongation is 21.2%.

• Nuclear Engineering and Technology
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• 제56권2호
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• pp.410-418
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• 2024

Study of flow behavior within rod bundles has been an active topic. Surface modification technologies are important parts of the design of the fourth generation reactor, which can increase the strength of the secondary flow within the rod bundle lattices. Quasi-periodic large-scale vortex structure (QLVS) is introduced by arranging micro ribs on the surface of rod bundles, which enhanced the scale of the secondary flow between the rod bundle lattices. Using computational fluid dynamics (CFD) and water experiments, the flow field distribution and drag coefficient of the rod-bundle lattices are studied. The secondary flow between the micro-ribbed rod-bundle lattice is significantly enhanced compared to the standard rod-bundle lattice. The numerical simulation results agree well with the experimental results.

• 한국조경학회지
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• 제37권6호
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• pp.48-56
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• 2010

예로부터 우리나라는 경치가 아름다워 금수강산으로 일컬어 왔으며, 문화재보호법에서는 경치가 아름다운 자연경관뿐만 아니라 역사문화적 가치가 뛰어난 대상을 명승으로 지정하여 보존과 이용을 도모하는 자연문화재로서 운영하고 있다. 하지만 명승은 사적이나 여타 문화재와 같은 행위 제한방식을 중심으로 관리되고 있어 지역발전과 재산권 침해 등 역기능을 줄 뿐만 아니라 문화재로서의 지정 취지를 잘 이해하지 못 하고 있는 실정이다. 따라서 본 연구의 목적은 1979년 명승으로 지정된 불영사계곡을 대상으로 명승구역 경계의 조정과 현상변경 허용기준을 마련하여 주민들의 재산권을 보호하고자 하였으며, 연구결과를 요약하면 다음과 같다. 첫째, 명승구역의 경계조정은 산 능선의 가시권을 기준으로 한 외곽경계의 조정과 경관미를 상실한 훼손지의 지정구역 해제 그리고 기존 취락을 중심으로 내부 해제지에 대해 조정하였으며, 기 지정면적 대비 약 $11,928,932m^2$, 38.6%를 지정구역에서 해제하였다. 둘째, 경관 보존에 중대한 영향을 미치는 현상변경 기준으로 '문화재 외곽경계~500m 반경 이내'에 대한 완충구역을 설정하였다. 셋째, 건축물의 '높이규제' 허용기준은 지붕형태에 따라 평지붕과 박공형태로 나누고, 평지붕은 높이 8m와 2층, 박공의 경우 높이 12m와 2층으로 적용하였다.