교회교육 지도자들을 위한 전문지 / 여름학교 교재다루기 : 유년부

이성화 장로회신학대학교 기독교교육연구원 1984 교육교회 Vol.- No.103

임베디드 OS를 사용한 개선된 Network Attached Storage 개발

이성화,문석환 제주한라대학 2003 論文集 Vol.27 No.-

Generally. 90% of data saved in disks by current companies are sometimes the ones not being used at all. The sudden increase of data are led to the expansion of companies' storages especially the capacity of the discs. However, from the standpoint of the companies. they cannot expand the capacity of the disc recklessly. Therefore. instead of importing expensive foreign products. it is necessary to develop high quality products of cheap price so that the small and medium companies can also introduce without difficulty. The device suggested from this study is Network Attached Storage system. It is the same concept with the existing File Server. It has capability of keeping all the data, yet. it is different technology compared to the existing concept. T! his product's operative system was developed to be fit for the product that it is the best-suited product in its efficiency. And in order to lower the cost of the product. I have used ATP disc. And to enhance the credibility of the product. I have stablized the system by using RAID technology. Also in order to minimize down time. I have enabled the system to drive within 5 minutes. The technology suggested from this study can be applied to wherever the large capacity media storage and the network occurred same time is wanted such as education-related department and etc.

차세대 이동통신 시스템 하부구조의 BS-MSC 인터페이스상에서의 Short-Packet

이성화,김일태,윤미선 건국대학교 1997 학술논문집 : 건국대 대학원 Vol.45 No.1

As the a infrastructure for new generation mobile communication system such as future public land mobile telecommunications system(FPLMTS), asynchronous transfer mode (ATM) will be used. To apply for a low bit rate voice signal and delay sensitive low bit rate data, a new ATM adaptation layer(AAL) is need to be standardized as a AAL-CU (composite user information). The AAL-CU adapts the short-packet to the interface between base station(BS) and mobile switching center(MSC). This paper studies on three type of AAL-CU and also identify the various further items in view point of AAL-CU connection, signaling capability, and OAM in case the AAL-CU is applied for FPLMTS.

Design of Optical Biological Sensor for Phycocyanin Parameters Measurement using Fluorescence Technique

이성화,마리아판 비나야감,원동찬,안명숙,양승연 한국인터넷방송통신학회 2016 Journal of Advanced Smart Convergence Vol.5 No.2

Remote sensing and measurement are of paramount importance of providing information on the state of water quality in water bodies. The formation and growth of cyanobacteria is of serious concern to in land aquatic life forms and human life. The main cause of water quality deterioration stems from anthropogenic induced eutrophication. The goal of this research to quantify and determine the spatial distribution of cyanobacteria concentration in the water using remote sensing technique. The standard approach to measure water quality based on the direct measurement of the fluorescence of the chlorophyll a in the living algal cells and the same approach used to detect the phycobilin pigments found in blue-green algae (a.k.a. cyanobacteria), phycocyanin and phycoerythrin. This paper propose the emerging sensor design to measure the water quality based on the optical analysis by fluorescence of the phycocyanin pigment. In this research, we developed an method to sense and quantify to derive phycocyanin intensity index for estimating cyanobacteria concentrations. The development of the index was based on the reflectance difference between visible light band 620nm and 665nm. As a result of research this paper presents, an optical biological sensor design information to measure the Phycocyanin parameters in water content.

한국어와 일본어의 음성 인식을 위한 알고리즘 개발에 관한 연구

이성화,김병래,Lee, Sung-Hwa,Kim, Hyung-Lae 한국전기전자학회 1998 전기전자학회논문지 Vol.2 No.1

In this thesis, experiment have performed with the speaker recognition using multilayer feedforward neural network(MFNN) model using Korean and Japanese digits . The 5 adult males and 5 adult females pronounciate form 0 to 9 digits of Korean, Japanese 7 times. And then, they are extracted characteristics coefficient through Pitch deletion algorithm, LPC analysis, and LPC Cepstral analysis to generate input pattern of MFNN. 5 times among them are used to train a neural network, and 2 times is used to measure the performance of neural network. Both Korean and Japanese, Pitch coefficients is about 4%t more enhanced than LPC or LPC Cepstral coefficients. 본 연구에서는 다층 순방향 신경망(MFNN) 모델을 이용해서 한국어 및 일본어 숫자음 인식 실험을 수행하였다. 각각 5명의 한국인 남성 및 여성 화자가 0부터 9까지의 10개의 숫자를 7회 발음토록 하였고, 그중 2회 발음한 것을 인식 실험에 사용하였다. 이들 음성 데이터로부터 각각 추출된 피치 계수, 선형 예측 계수, 선형 예측 켑스트럼 계수들을 신경망의 입력 패턴으로 입력시켜 인식 성능을 측정하였다. 한국어를 사용한 실험과 일본어를 사용한 실험 모두에서 피치 계수를 사용하는 것이 다른 계수를 사용하는 것보다 약 4% 정도 우수한 성능을 나타내었다.

다중처리 시스템에서 향상된 부하분산에 관한 연구

이성화,문석환 제주한라대학 2001 論文集 Vol.25 No.-

In this thesis, an advanced load balancing algorithm for distributed systems is presented. The distributed parallel processing has emerged as a key technology in modern computers for higher performance and lower costs. In ideal case, the performance of a distributed system will increase linearly with the number of processors. But actually, the performance curve is not ideal because of the saturation effect. In distributed systems, processors have different work loads for instance, some of the processors are idle while others are still working. This causes a degradation of the system performance. The load balancing is conducted by transferring some task from heavily loaded processors to lightly loaded processors. In this paper, an advanced load balancing algorithm in nth order Hypercube distributed system has been proposed. The new algorithm uses centralized load-balancing to avoid blocking phenomenon and processor thrashing, and shows the results which makes loads to approach average value of loads. The new algorithm is compared with several other algorithm and it shows a merit in cost function value.

Hidden Markov Model를 이용한 한국어 격리단어 인식에 관한 연구 ( A Study on Speech Recognition for Korean Isolated Word Using the Hidden Markov Models )

이성화,임헌주,김영권,김형래 대한전자공학회 1990 대한전자공학회 학술대회 Vol.1990 No.7

e-Business에서의 기업정보포탈 (Enterprise Information Portal) 활용방안

이성화 한국기술사회 2001 技術士 Vol.34 No.4

Enterprise Information Portals (EIPs) are the applications that enable companies to get access to Internally and externally stored information. Also EIPs offer inside and outside users of the company, a unified window to personalize whatever Information they need for accurate business decisions. EIPs will be applied to B2E, B2B, B2C, G2B, G4C and G2G Portals of e-Business.

제조업 근로자의 스트레스

이성화 한국산업간호협회 1998 한국산업간호협회지 Vol.5 No.2

구급지도의사 간접의료지도 평가 정확도

이성화,김선휴,김성춘,김정은,양태원,김민희,차준재 대한응급의학회 2022 대한응급의학회지 Vol.32 No.6

Objective: This study aimed to evaluate the accuracy of the assessment of medical directors for indirect medical oversight on prehospital care. Methods: Medical directors assessed the same prehospital care run sheets with six cases of cardiac arrest, four cases of withholding or interruption of cardiopulmonary resuscitation (CPR) and six cases of severe trauma patients. Demographics of the medical directors and the accuracy of their assessment for the prehospital care run sheets were investigated. Results: Board certified emergency physician was 14 of the total 21 medical directors (58%). Eleven medical directors were educated for the medical director course of the Korean council of emergency medical services physicians. The accuracy of the assessment of the medical directors was 50% in the assessment of electrocardiogram using an automated external defibrillator (AED) in cardiac arrest. Pulse check, respiration check, AED monitoring and the reason of interruption for CPR were lower than 60% for withholding or interruption of CPR. The lowest accurate assessment of medical directors was the appropriate treatment for trauma, with 36.5% in severe trauma. Conclusion: Lower accuracy in some assessments of the medical directors for indirect medical oversight on prehospital care was identified. Education and quality control are needed for medical directors to provide high-quality indirect medical oversight.