• Journal of Korean Medical classics
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• v.30 no.3
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• pp.11-40
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• 2017

Purpose : The purpose of this article is to make a clarification that Hwang Doyeon(黃度淵) was a official doctor(醫官) who even served as royal doctor(御醫), rather than merely a general doctor who worked in the private sector. The article also attempts to give a new perspective on the medical history about the late period of Joseon(朝鮮) Dynasty. Methods : In researching Hwang Doyeon's master work, the Gains and Losses of Medical Orthodoxy(醫宗損益), the article looks at his clinical medicines. Analyzing the historical records, the article makes an assumption that Hwang Doyeon and Hwang Dosoon(黃道淳), who was selected as an officer to discuss medicine with other medical officers(議藥同參), are the identical person. On this assumption, the article tries to reinterpret the medicine during the later Joseon Dynasty period. Result & Conclusion : The records, including the royal medical treatment records of the Gains and Losses of Medical Orthodoxy, the Daily Records of Royal Secretariat(承政院日記), the genealogy of Changwon Hwangs(昌原黃氏世譜), academic paper and government documents released posthumously, demonstrated that Hwang Doyeon and Hwang Dosoon are the same person. If so, we can have new historical interpretation about medical history of late Joseon Dynasty. First, during the late of Joseon Dynasty, there was an official and active medical knowledge interaction between government and private sector. Second, the Joseon's medicine has been established its own medical system based on the Treasured Mirror of Eastern Medicine(東醫寶鑑), trying to cope with cholera and other contemporary epidemics without relying on Chinese warm disease(溫病) medicine. Third, the Compilation of Formulas and Medicinals(方藥合編), is regarded not only as a must-read medical reading for medical doctors, also playing an important role on popularization of Korean medical knowledge.

• Korean Journal of Oriental Medicine
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• v.13 no.1 s.19
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• pp.37-42
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• 2007

As the cholera was spread over the Joseon dynasty at 1821, Hwang Doyeon investigated the symptoms like diarrhea, vomiting, muscle cramp and so on, and he presented the cause of cholera as the damage of Primordial-gi caused by abnormal climate and Damp-heat made by taking inadequate foods. He regarded as of great importance the ordinary health condition by guessing the prognosis of the disease, and proposed how to make a diagnosis of dehydration by observing nails and toenails. To treat cholera, he presented the methods of Sipseon-bloodletting and Singwol-moxacautery, and mentioned compound herb remedies and single herbs like garlic etc. He wrote down Mulberry leaves and Argyi wormwood leaves as the preventor of cholera to emphasize the importance of prevention, and mentioned food contraindication in addition to keep from getting worse.

• 축산식품과학과 산업
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• v.7 no.2
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• pp.56-67
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• 2018

• 한국신재생에너지학회:학술대회논문집
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• 2010.06a
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• pp.116.1-116.1
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• 2010

저급 연료원인 오일샌드는 아스팔트와 같은 중질유를 10% 이상 함유한 모래 또는 사암으로서, 겉으로는 시커먼 흙이나 모래처럼 보이나 내부에는 bitumen, 모래(점토) 및 물 등이 광물질 70~80%, bitumen 10~18%, 물 3~5% 정도의 비율로 혼합되어 있는데, 가열 또는 용매 추출 방식으로 오일샌드에 포함되어 있는 bitumen을 분리하여 정제하면 원유를 생산할 수 있으므로 고유가 시대의 대체에너지원으로 세계적인 석유회사들이 개발을 진행하고 있다. 따라서, 본 연구에서는 이러한 저급 연료원인 오일샌드 bitumen의 활용기술 개발을 위하여 기초특성 분석 결과 bitumen과 가장 유사한 특성을 가지는 것으로 파악된 중질잔사유를 대상으로 가스화를 통한 액체연료 전환을 위해 고점도 시료공급장치, 가스화기, 집진장치, 탈황장치, 수성가스 전환장치, 합성가스 압축장치, DME 전환장치 등으로 구성되는 시스템을 구축한 후 시험을 진행하였다.

• Journal of the Institute of Electronics and Information Engineers
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• v.52 no.10
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• pp.47-55
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• 2015

To verify the function of vehicle is becoming more and more difficult because many electronic control units have been embedded in vehicle with development of electronics industry. The reliability of vehicle should be considered above all important because malfunction of vehicle can cause damage of human life. In this paper, defect diagnosis platform based on CAN network is proposed to improve the reliability of vehicle. Reliability of vehicle is significantly increased by adopting the structural test via dedicated test path after manufacturing. Besides, the test cost is reduced because additional test pins are not required.

• Journal of Hydrogen and New Energy
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• v.30 no.4
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• pp.330-337
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• 2019

Effects of cyclone and freeboard geometry on solid entrainment loss were investigated with two different types of cyclones and bubbling beds in a gas-solid fluidized bed system. The solid entrainment loss was measured by collected fines during continuous solid circulation condition. Bubbling bed which has an expanded freeboard showed less solid entrainment than the bubbling bed which has a straight freeboard. The cyclone which has a wide gas-solid mixture inlet showed less solid entrainment loss than the cyclone which has a narrow gas-solid mixture inlet. Moreover, the cyclone has a wide gas-solid mixture inlet can capture smaller particles.

• Journal of Hydrogen and New Energy
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• v.30 no.2
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• pp.170-177
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• 2019

Continuous solid circulation test at high temperature and high pressure conditions and batch type reduction-oxidation tests were performed to check feasibility of a 0.5 MWth chemical looping combustion system. Pressure drop profiles were maintained stable during continuous solid circulation up to 16 hours. Therefore, we could conclude that the solid circulation between an air reactor and a fuel reactor could be smooth and stable. The measured fuel conversion and $CO_2$ selectivity were high enough even at high capacity and even after cyclic tests. Therefore, we could expect high reactivity of oxygen carrier at real operation condition.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.14 no.12
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• pp.4909-4926
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• 2020

Cyberattacks penetrate the server and perform various malicious acts such as stealing confidential information, destroying systems, and exposing personal information. To achieve this, attackers perform various malicious actions by infecting endpoints and accessing the internal network. However, the current countermeasures are only anti-viruses that operate in a signature or pattern manner, allowing initial unknown attacks. Endpoint Detection and Response (EDR) technology is focused on providing visibility, and strong countermeasures are lacking. If you fail to respond to the initial attack, it is difficult to respond additionally because malicious behavior like Advanced Persistent Threat (APT) attack does not occur immediately, but occurs over a long period of time. In this paper, we propose a technique that detects an unknown attack using an event log without prior knowledge, although the initial response failed with anti-virus. The proposed technology uses a combination of AutoEncoder and 1D CNN (1-Dimention Convolutional Neural Network) based on semi-supervised learning. The experiment trained a dataset collected over a month in a real-world commercial endpoint environment, and tested the data collected over the next month. As a result of the experiment, 37 unknown attacks were detected in the event log collected for one month in the actual commercial endpoint environment, and 26 of them were verified as malicious through VirusTotal (VT). In the future, it is expected that the proposed model will be applied to EDR technology to form a secure endpoint environment and reduce time and labor costs to effectively detect unknown attacks.

• Journal of Hydrogen and New Energy
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• v.32 no.1
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• pp.53-62
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• 2021

Batch type reduction-oxidation tests were performed to check effects of temperature, pressure, gas velocity, and capacity on reduction characteristics of mass produced particle in a 0.5 MWth chemical looping combustion system. The fuel conversion and the CO2 selectivity increased as the temperature increased and as the gas velocity decreased. However the CO2 selectivity showed the maximum and decreased as the capacity increased because the CO emission increased. The results show that high temperature, low gas velocity and low inert gas concentration are preferable to ensure high reactivity of oxygen carrier in the fuel reactor.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.17 no.5
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• pp.223-229
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• 2017

This paper proposes the Global Clipboard System and presents a preliminary study on it. The clipboard is a temporary storage used to copy and paste some contents between application programs in Windows Operating System. The proposed Global Clipboard is a contents delivery system that extends the concept of the existing local clipboard to Internet. The Global Clipboard System operates in two steps. An application user can upload selected contents to the Global Clipboard by typing consecutive keys of Ctrl-C and Ctrl-Shift-C easily. And other users can download and utilize the contents from the Global Clipboard by typing Ctrl-Shift-V and Ctrl-V keys consecutively. The proposed Global Clipboard can deal almost data like simple texts, screen capture images, files, and directories. In this paper, we developed a global clipboard server, a Windows application, and an Android application. We have conducted experiments about functions of the Global Clipboard and also compared delay times between 4 applications such as e-mail, Kakao, Google Drive, and the Global Clipboard. The results of the evaluation show that the time delay spending in sending and receiving contents is shortest when the Global Clipboard is used.