• 한국멀티미디어학회논문지
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• 제20권8호
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• pp.1216-1223
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• 2017

Because of the open data in public domains, it is easy to collect the public data. However, people find difficulty in visualizing the data in material that they actually want. Especially, A map is a difficult material to do the visualization work, without using the specific tools and learning. Therefore, in this paper, we proposed an interface tool for map data visualization that user can easily visualize various national statistics data on the map. We designed the interface by classifying the properties of the map systematically, focusing on the completion and convenience for making the map. After that, we developed a web-based application using D3.js. After user evaluation, we found that our application can visualize the map more quickly and completely than any other web interfaces for map data visualization. Users also found a higher satisfaction in operating convenience.

• 한국가시화정보학회지
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• 제20권2호
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• pp.63-69
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• 2022

In this study, we numerically simulate the condensational growth of micron-sized particles traveling through a pipe filled with humidified air. Using the finite volume method and Lagrangian particle tracking technique, the mixture of particle-laden flow with moist air in a T-juction pipe is simulated. The condensational growth of particles is calculated by considering the mass transfer of vapor in the air onto the particle surface. The results indicate that the growth rate of the particles increases as the relative humidity of air is higher. Furthermore, the placement of a porous media with low permeability in the pipe could enhance the degree of condensational growth.

• 한국주조공학회지
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• 제42권6호
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• pp.347-357
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• 2022

본 연구에서는 주조공장의 장입재 충전 거동을 3차원적으로 시각화하고자 하였다. 장입재와 용해로의 실제 조건을 반영하여 시뮬레이션하였다. 3차원 시각화 시뮬레이션이 제조 현장의 장입재 충전 거동을 사실적으로 잘 구현하는지 확인하였다. 3차원 시각화 시뮬레이션에 의한 현실적인 충전 상태를 이상적인 충전 상태와 비교하였다. 어떤 경우에 두 충전 상태의 차이가 발생하는지 분석하였다. 3차원 시각화 시뮬레이션을 제조 공정에 적용할 경우의 특징을 살펴보았고, 주조 분야에서의 여러 활용 방안을 제안하였다.

• 복식
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• 제63권4호
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• pp.1-16
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• 2013

Using the premise that fashion and art reflects the characteristics of its times, this study examines the influence of Anti-form in fashion with a focus on physicality. This study combines literary survey and case analysis of both Anti-form in 1960s and 1970s and the fashion collections since 1970s when the influence of Anti-form began to appear in fashion. The influence of Anti-form focusing on physicality is summarized as deconstruction of garment and visualization of the physicality of material. Deconstruction of garment visualizes the invisible structures of garment by deconstructing, restructuring, and deforming the construction and the shapes of the garment, which is illustrated by visualization of design process, overlapping and fusing of materials, loss of stitches, and use of fabrics with flaws, questioning and destroying the sartorial conventions and aesthetic standards. Visualization of the physicality of material exposes the imperfect inside of garment which is concealed conventionally by presenting unfinished garments with minimized sewing procedure, crumpling and flattening fabrics, rubbing and fading surfaces, pulling threads, as well as using the selvages of fabrics.

• 한국가시화정보학회지
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• 제21권3호
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• pp.75-84
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• 2023

In this study, we conducted analysis of bubble dynamics and flow of liquid phase change material(PCM) using shadowgraphy and particle image velocimetry(PIV). Characteristics of internal flow varied depending on locations of injection when solid PCM was liquefied from heated vertical wall. When bubbles rose immediately, they exhibited elliptical shape and zigzag trajectory. In contrast, when bubbles rose after merging at the bottom of solid PCM, with equivalent diameter for the inter-wall distance of 0.64 or greater, they showed a jellyfish shape and strong rocking behavior. It was observed by the PIV that the small ellipse bubbles made most strong flow inside the liquid PCM. Furthermore, the flow velocity was highest in the case of front injection, as the directions of temperature gradients and bubble-driven flow were aligned. The results underscore the significant influence of injection location on various characteristics, including bubble size, shape, rising path of bubbles, and internal flow.

• 한국콘텐츠학회논문지
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• 제13권1호
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• pp.64-72
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• 2013

본 연구에서는 데이터 시각화 연구의 한 분야인 텍스트 시각화에 대하여 그 시각적 표현의 재료가 되는 텍스트 데이터의 종류 및 본질, 특성에 대하여 고찰하고, 다양한 텍스트 시각화의 사례 연구를 통해 텍스트 데이터의 시각화를 위한 표현적 접근 방식에 대하여 다각적으로 분석하였다. 텍스트 시각화 연구는 컴퓨터의 발달과 방대한 데이터의 공개, 그리고 시각화 툴의 범용화 등의 기류를 타고 급속도로 확산되고 있으며, 이에 따라 공학, 예술, 인문, 사회 등 학제 간 융합 연구를 통해 다양한 작품 또는 연구 성과물로서 창작되고 있다. 그럼에도 불구하고 텍스트 데이터를 비롯한 데이터 시각화에 관한 이론적 고찰과 접근 방식에 대한 체계적 분석은 거의 이루어지지 않고 있는 실정이다. 데이터는 이해와 해석의 대상이며, 가공 및 접근에 따라 무한한 정보와 가능성을 갖는다. 데이터의 중요성이 점차 증가하고 있는 현 시점에서 데이터의 이해와 해석에서 출발하는 텍스트 시각화라는 융합 학문적 연구 분야는 미래 인간 사회에서 데이터가 차지할 위상을 고려할 때, 보다 체계적인 연구와 이론적 축적을 필요로 한다.

• 한국가시화정보학회지
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• 제22권1호
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• pp.18-27
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• 2024

A series of shock wave pulses with Mach number 2.2 of 100, 200, and 300 shocks were applied to lead sulfide (PbS) nanomaterials at intervals of 5 sec per shock pulse. To investigate the crystallographic, electronic, and magnetic phase stabilities, powder X-ray diffractometry (XRD), diffused reflectance spectroscopy (DRS), and vibrating-sample magnetometry (VSM) were employed. The material exhibited a rock salt structure (NaCl-type structure); XRD results indicated that material is monoclinic with space group C121 (5). Further, XRD results showed shifts due to lattice contraction and expansion when material was subjected to shock wave pulses, indicating stable material structure. Based on the data obtained, we believe that the PbS material is a good choice for high-pressure, high-temperature, and aerospace applications due to its superior shock resistance characteristics.

• 응용통계연구
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• 제31권2호
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• pp.167-188
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• 2018

Minard의 정보맵은 1812년 나폴레옹의 러시아침공을 묘사한 정보그래픽스로서 Tufte (1983)가 극찬하였던 그림이다. 이 정보그래픽스를 데이터시각화교육에서 스토리텔링 소재로서 활용할 수 있다. 본 논문에서 Minard의 정보맵을 시작점으로 하여 스토리텔링을 이용한 데이터시각화 교육에 대하여 4개의 주제(정보그래픽스, 정보디자인, Minard, 나폴레옹의 러시아침공)별로 언급하였다.

• 한국마린엔지니어링학회:학술대회논문집
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• 한국마린엔지니어링학회 2011년도 후기공동학술대회 논문집
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• pp.61-61
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• 2011

Cavitation phenomena during the injection process of the conventional fuel injection pump for a medium-speed diesel engine can cause surface damage with material removal or round-off on the plunger and barrel port and may shorten their expected life time. An experiment of flow visualization was carried out to investigate the main cause of these cavitation damages and find the prevention method. Experimental results of flow visualization show that these damages are mainly affected by fountain-like cavitation and jet-type cavitation generated before and after the end of fuel delivery process and therefore the prevention method was designed to control these cavitation flows. From the visualization and endurance test, it was proved that this method can effectively prevent cavitation damages by controlling cavitation flows.

• 한국가시화정보학회지
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• 제21권2호
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• pp.34-45
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• 2023

When lithium-ion batteries operate out of the proper temperature range, their performance can be significantly degraded and safety issues such as thermal runaway can occur. Therefore, battery thermal management systems are widely researched to maintain the temperature of Li-ion battery cells within the proper temperature range during the charging and discharging process. This study investigates the cooling performance and isothermal maintenance of cooling materials by measuring the surface temperature of a battery cell with or without cooling materials, such as silicone oil, thermal adhesive, and phase change materials during discharge process of battery by the experimental and numerical analysis. As a result of the experiment, the battery pack filled with phase change material showed a temperature reduction of 47.4 ℃ compared to the case of natural convection. It proves the advanced utility of the cooling unit using phase change material that is suitable for use in battery thermal management systems.