Construction of Dyeing Condition System for Lithospermum erythrorhizon by Applying Natural Dye and Mordants

정석률,Jung, Suk-Yul The Korea Internet of Things Society 2020 한국사물인터넷학회 논문지 Vol.6 No.4

It was reported that a mobile application was designed to easily provide natural dyeing information such as natural dye related resources, colors and dyed fabrics in 2007. Since studies on the linkage, application, etc. between natural dye dyeing and IoT are still lacking, diversity of information on the change of dyeing pattern by natural dye dyeing is required. In this study, it was to construct dyeing information by natural dyes, e.g., Lithospermum erythrorhizon, on silk, which has been traditionally used as many fibers in Korea. The extraction of the dye from L. erythrorhizon was carried out under pH4. The dried root of L. erythrorhizon showed dark brownish purple. Silk fabric by a without a mordant typically showed a purple dyed pattern. In the staining by sodium tartrate plus citric acid, silk fabric was stained clear brown. Interestingly, the mordant of iron (II) sulfate, the silk fabric was dyed in a light gray color rather than black. When the mordant of aluminum potassium sulfate was treated with L. erythrorhizon-extracted dye, the results were almost the same as when the mordant was not treated. When the degree of dyeing was evaluated numerically, the treatment of the mordant of potassium dichromate was about 50% darker, and the dyeing by iron (II) sulfate was about 75% darker. These results will be helpful in the study of applying various dye colors using L. erythrorhizon, and it will provide information on dyeing controller and database system construction by dyeing parameters such as dyeing degree, pH concentration, and chromaticity change.

Social Significance of Recent Korean Courtroom Films : A Case Study of Silenced, Unbowed, The Attorney and New Trial

김보경,Kim, Bo-Kyong The Korea Internet of Things Society 2021 한국사물인터넷학회 논문지 Vol.7 No.3

This study explores four Korean films: Silenced (2011), Unbowed (2012), The Attorney (2014), and New Trial (2017). Based on these films, this study explores the features of courtroom films and their social significance on society. The ability of Korean courtroom films to have such a profound impact on Korean society is something that is not usually witnessed in other countries. Also, the fact that they are low-budget works, not action/thrillers within the 'guaranteed star' system, and the fact that they present opportunities for netizens to call for change is a defining feature of Korean courtroom films. All four films have sparked controversy over the level of realism in Korean courtroom films, but what is more important is the way in which they portray contemporary social change. In summary, these four Korean courtroom films highlight the characteristics of social action and the means of mobilization required to effect it.

Analysis of the Effect of The Internet Activation on Students in IoT Environment

이동우,조광문,이성훈,Lee, Dong-Woo,Cho, Kwangmoon,Lee, Seong-Hoon The Korea Internet of Things Society 2021 한국사물인터넷학회 논문지 Vol.7 No.1

The world is changing rapidly as the Internet spreads and various smart devices appear. High-performance PCs and high-speed communication networks are rapidly spreading in every home, and all kinds of the internet sites are emerging. In particular, the high education enthusiasm of Korean parents adds to this, and the ratio of the internet users among teenagers is exploding every day. In the case of adolescents, most of them use the Internet for online games, indicating that online games are the main cause of the internet addiction. This study was conducted using a questionnaire for male and female high school students using the Internet, and demographic and sociological characteristics were used only as basic data. In this study, as much as parents, students and teachers think, the results of the internet addiction type analysis according to academic achievement in humanities high school students are to be investigated to determine whether internet use has an effect on academic achievement.

Cloud Computing Based Analysis Incorporated with the Internet of Things (IoT) in Nuclear Safety Assessment for Fukushima Dai-ichi Disaster

우태호,장경배,Woo, Tae-Ho,Jang, Kyung-Bae The Korea Internet of Things Society 2020 한국사물인터넷학회 논문지 Vol.6 No.1

The internet of things (IoT) using cloud computing is applied to nuclear industry in which the nuclear power plant (NPP) accident is analyzed for the safety assessment. The Fukushima NPP accident is modeled for the accident simulations where the earthquake induced plant failure accident is used for analyzing the cloud computing technology. The fast and reasonable treatment in the natural disaster was needed in the case of the Fukushima. The real time safety assessment (RTSA) and the Monte-Carlo real time assessment (MCRTA) are constructed. This cloud computing could give the practicable method to prepare for the future similar accident.

Towards Real Time Detection of Rice Weed in Uncontrolled Crop Conditions

무하마드 움라이즈,김상철,Umraiz, Muhammad,Kim, Sang-cheol The Korea Internet of Things Society 2020 한국사물인터넷학회 논문지 Vol.6 No.1

Being a dense and complex task of precisely detecting the weeds in practical crop field environment, previous approaches lack in terms of speed of processing image frames with accuracy. Although much of the attention has been given to classify the plants diseases but detecting crop weed issue remained in limelight. Previous approaches report to use fast algorithms but inference time is not even closer to real time, making them impractical solutions to be used in uncontrolled conditions. Therefore, we propose a detection model for the complex rice weed detection task. Experimental results show that inference time in our approach is reduced with a significant margin in weed detection task, making it practically deployable application in real conditions. The samples are collected at two different growth stages of rice and annotated manually

Mordants Application and Data Establishment for Natural Dye Standardization and Accuarcy

정석률,Jung, Suk-Yul The Korea Internet of Things Society 2021 한국사물인터넷학회 논문지 Vol.7 No.4

Natural dyeing has traditionally been used in many countries around the world, and as natural dyes are diversified, the diversity of dyeing patterns is also expanding. This study tried to establish standardization by providing numerical values that could provide quantified information to the Internet of Things by more accurately analyzing the color changes of dyes and mordants for the four natural dyes. The addition of copper acetate, iron II sulfate and potassium dichromate to the dye extracted from Juglans regia Linn changed the original color of brown to other colors of purple, khaki and dark brown, respectively. Except for potassium dichromate added to Sophora japonica L. or Phellodendron amurense Ruprecht, the concentration of other mordants was reduced, but the color difference of the dyed silk was very large. However, although there is a difference in degree, copper acetate and iron sulfate induced color changes of 35% and 15%, respectively. In summary, it was confirmed that the highest color change was induced when 15 grams of copper acetate was added to J. regia Linn, S. japonica L. and P. amurense Ruprecht and 150 grams of iron to Phytolacca americana. The results of this study suggested that the accurate color change by various mordants can be utilized as important information that enables more accurate color induction by dyes and mordants.

Filed Programmable Logic Control and Test Pattern Generation for IoT Multiple Object switch Control

김응주,정지학,Kim, Eung-Ju,Jung, Ji-Hak The Korea Internet of Things Society 2020 한국사물인터넷학회 논문지 Vol.6 No.1

Multi-Channel Switch ICs for IoT have integrated several solid state structure low ON-resistance bi-directional relay MOS switches with level shifter to drive high voltage and they should be independently controlled by external serialized logic control. These devices are designed for using in applications requiring high-voltage switching control by low-voltage control signals, such as medical ultra-sound imaging, ink-jet printer control, bare board open/short and leakage test system using Kelvin 4-terminal measurement method. This paper describes implementation of analog switch control block and its verification using Field programmable Gate Array (FPGA) test pattern generation. Each block has been implemented using Verilog hardware description language then simulated by Modelsim and prototyped in a FPGA board. Compare to conventional IC, The proposed architecture can be applied to fields where multiple entities need to be controlled simultaneously in the IoT environment and the proposed pattern generation method can be applied to test similar types of ICs.

Adaptive Enhancement of Low-light Video Images Algorithm Based on Visual Perception

이원,민병원,Li Yuan,Byung-Won Min The Korea Internet of Things Society 2024 한국사물인터넷학회 논문지 Vol.10 No.2

Aiming at the problem of low contrast and difficult to recognize video images in low-light environment, we propose an adaptive contrast compensation enhancement algorithm based on human visual perception. First of all, the video image characteristic factors in low-light environment are extracted: AL (average luminance), ABWF (average bandwidth factor), and the mathematical model of human visual CRC(contrast resolution compensation) is established according to the difference of the original image's grayscale/chromaticity level, and the proportion of the three primary colors of the true color is compensated by the integral, respectively. Then, when the degree of compensation is lower than the bright vision precisely distinguishable difference, the compensation threshold is set to linearly compensate the bright vision to the full bandwidth. Finally, the automatic optimization model of the compensation ratio coefficient is established by combining the subjective image quality evaluation and the image characteristic factor. The experimental test results show that the video image adaptive enhancement algorithm has good enhancement effect, good real-time performance, can effectively mine the dark vision information, and can be widely used in different scenes.

전공에 따른 케어 로봇에 대한 인식, 디지털 리터러시 및 공감능력에 대한 비교 연구 -보건계열 및 공학계열 대학생을 대상으로-

이도영,윤상석,Lee, Do-Young,Yun, Sang-Seok The Korea Internet of Things Society 2021 한국사물인터넷학회 논문지 Vol.7 No.3

This study was aimed to understand the recognition of care robots which would enhance the medical quality of life under the 4^th industrial revolution in the university students majoring in health and engineering who would lead the development of the future medical industry and to find out the differences of their digital literacy and empathic ability. This was a descriptive correlation study to analyze the recognition of university students on care robots, their digital literacy and empathic ability. Both students majoring in health and engineering recognized the needs of care robots, while their education experiences were not sufficient. Moreover, statistically fewer university students majoring in health heard about care robots than those in engineering, and their need of taking classes was lower, too. No statistically significant differences were found in digital literacy and empathic ability between the two majors, while significant difference was found in the relationship bundling capability out of behavioral empathy, a sub-domain of empathic ability. The study results are anticipated to suggest the future educational direction in the medical field according to the 4^th industrial revolution and to be the fundamental data for understanding and preparation of the students depending on the majors.

A Simple Cost Analysis of Host ID-LOC Separating protocol using SDN Features

Lee, Chan-Haeng,Choi, Chang-Won The Korea Internet of Things Society 2016 한국사물인터넷학회 논문지 Vol.2 No.4

The IP address used in the Internet has the role of both identifier and locator to bind a host and the application, however, this binding restricts some functions such as mobility and multi-homing. As a result, we suggested a host ID-LOC separation protocol using DHT with SDN features. The proposed scheme is a network-based scheme, and uses IPv6 addresses. The underlying network is partitioned into Host Identity domain and IP domain for identifiers and locators. In this paper, we present a simple cost model for analyzing both the proposed scheme and one of the previous works, the MOFI. The result of cost analysis shows better performance of the proposed scheme.