위치 기반 초·중·고 학교 정보 매쉬업 서비스

김해진,김해란,한순희,조혁현,정희택,Kim, Hae-Jin,Kim, Hae-Ran,Han, Soon-Hee,Cho, Hyug-Hyun,Ceong, Hee-Taek 한국전자통신학회 2010 한국전자통신학회 논문지 Vol.5 No.6

16개 시 도 교육청의 누리집의 학교 정보 서비스는 대부분 정적인 지도 이미지에서 지역을 클릭 했을 때 해당 지역의 학교 정보를 제시하거나 검색에 의한 텍스트 위주의 결과 정보를 나열한다. 그리고 동기적 전송에 의한 검색으로 서버 부하 및 느린 전송 속도 등 여러 문제점을 내포하고 있다. 이에 본 연구에서는 위치기반의 학교 정보를 제공하기 위해 구글 지도의 Open API를 이용하고 검색 시 서버 부하 감소 및 전송 속도 향상을 위해 비동기적 전송 방식의 Ajax 프로그램을 이용하여 학교 정보 매쉬업 서비스를 구현 하였다. 이 서비스는 학생, 교사, 학부모 등 다양한 계층의 교육 가족에게 동적 지도상에 위치기반의 학교 정보를 서비스함으로써 효율성과 편리함을 줄 수 있다. In the homepage of 16 municipal provincial office of education, school information service displays text-based results through search step or presents the simple information of the selected area when an area is clicked on the static image map. And it has several problems such as server load and slow transfer speed by the search of the synchronous transfer. Thus, in this study, we used the open API of Google map to provide location-based school information and implemented the mash up service for school information with the Ajax program of asynchronous transfer to reduce server load and to increase transmission speed. This service gives the efficiency and convenience to students, teachers, parents and education family members of various levels because it includes the location with school information on a dynamic map.

1-Aza-18-Crown-6-Styrene-DVB 수지에 의한 U(VI), Mg(II), Ho(III) 이온들의 흡착

김해진,김선화,Kim, Hae-Jin,Kim, Sun-Hwa 대한환경위생공학회 2007 대한환경위생공학회지 Vol.22 No.1

The effects of pH, time, dielectric constant of solvent and crosslink on adsorption of metal ions by 1-aza-18-crown-6-styrene-DVB(divinylbenzene) resin(resin) adsorbent were investigated. The metal ions were showed fast adsorption on the resins in over pH 3. The equilibrium time for adsorption of metallic ions was about two hours and the adsorption selectivity determined in methanol was in increasing order $UO_2^{2+}>Mg^{2+}>Ho^{3+}$ ions. The adsorption was in the order of 1%, 2% and 4% crosslink resin and adsorption of resin decreased in proportion to the order of dielectric constant of solvents.

N-Oxyldiethylenebenzothiazole-2-sulfenamide의 -S-N= 결합에 대한 전기화학적 환원

김해진,정근호,최규원,김일광,임선영,Kim, Hae-Jin,Jung , Keun-Ho,Choi, Qw-Won,Kim, Il-Kwang,Leem, Sun-Young 대한화학회 1991 대한화학회지 Vol.35 No.6

N-Oxyldiethylenebenzothiazole-2-sulfenamide (ODBS;가황산촉진제)의 전기화학적 환원을 직류와 시차펄스 폴라로그래피 순환 전압전류법, 조절전위 전기량법으로 연구하였다. ODBS의 전극환원과정은 단일 환원파(-1.86 volts vs. Ag/0.1 M AgN$O_3$in AN)에서 비가역으로 3전자가 이동하는 E-C-E-C 반응 메카니즘으로 진행되었다. 조절전위 전기분해 결과 SULFENAMIDE(-S-N=) 결합이 끊어지고 mercaptobenzothiazole(MBT)과 benzothiazole disulfide(MBT dimer) 그리고 유리된 sulfur 등이 생성물로 얻어졌따. pH 변화에 따른 폴라로그램의 해석과 생성물 분석의 결과를 바탕으로하여 전기화학적 반응 메카니즘을 제안하였다. The electrochemical reduction of N-oxyldiethylenebenzothiazole-2-sulfenamide (ODBS; vulcanization accelerator) was investigated by direct current polarography, differential pulse polarography, cyclic voltammetry and controlled potential coulometry. The irreversible electrode reduction of ODBS proceeded E-C-E-C reaction mechanism by three electrons transfer with irreversible one wave (-1.86 volts vs. Ag/0.1 M AgN$O_3$ in AN). As the results of controlled potential electrolysis, mercaptobenzothiazole (MBT), benzothiazole disulfide (MBT dimer) and extricated sulfur were products which followed by cleavage of the sulfenamide (-S-N=) bond. Upo the basis of products analysis and polarogram interpretation witli pH variable, electrochemical reaction mechanism was suggested.

경남지역 치과의원 의료폐기물 관리실태

김해진,사공준,Kim, Hae-Jin,SaKong, Joon 한국환경보건학회 2012 한국환경보건학회지 Vol.38 No.4

Objectives: The purpose of this study was to prevent health problems and environmental contamination resulting from inappropriate management of dental wastes and to provide reference data for revision and supplementation of dental clinic waste management guidelines. Methods: From 640 total of dental clinics registered in 16 cities and counties in Gyeongsangnam-do, 100 (60 in Changwon (Masan, Changwon), 29 in Gimhae, and 11 in Jinju) were included in this study. From July 2010 to September 2010, investigators visited the 100 dental clinics and conducted survey interviews using a structured survey questionnaire regarding disposal methods for liquid wastes (suction pump, spittoon container waste, used liquid disinfectants, and X-ray developer), and disposal methods for solid waste (suction pump, spittoon container waste, and general medical waste). Results: All the 100 dental clinics were found to treat liquid waste from suction pumps and spittoon containers in the same manner as general waste water. Nineteen percent of the clinics treated solid waste that was not filtered through the filter of a suction pump as general waste. Fifty or more percent of the clinics treated solid waste in spittoon containers as general waste. Seventy percent of the clinics used disinfectant solution, although most of them treated used disinfectants in the same manner as general waste water. Some clinics treated used X-ray developer and X-ray fixer in the same manner as general waste water. In most of the clinics, used drapes were washed within the clinic. Conclusions: It was found that waste water and dental wastes at some dental clinics were treated in inappropriately. Thus, in conclusion, the development of guidelines regarding proper management of liquid and solid dental waste at dental clinics is required, and hygiene and environmental training for workers at dental clinics is necessary.

Ti-8Ta-3Nb 합금의 표면처리에 의한 백서 두개관 세포의 반응

김해진,손미경,박지일,정현주,김영준,Kim, Hae-Jin,Son, Mee-Kyoung,Park, Ji-Il,Chung, Hyun-Ju,Kim, Young-Joon 대한치주과학회 2008 Journal of Periodontal & Implant Science Vol.38 No.4

Purpose: Ti-6Al-4V alloy is widely used as an implant material because of its good biocompatibility and good mechanical property compared with commercial pure titanium. Otherwise, toxicity of aluminum and vanadium in vivo has been reported. Ti-8Ta-3Nb alloy is recently developed in the R&D Center for Ti and Special Alloys and it was reported that this alloy has high mechanical strength, no cytotoxicity and similar biocompatibility to commercial pure titanium, but many studies are needed for its clinical use. In these experiment, we carried out different surface treatment on each Ti-8Ta-3Nb alloy disks, then cultured cell on it and assessed biological response. Materials and Methods: cpTi, Ti-6Al-4V, Ti-8Ta-3Nb alloy disks were prepared and carried out sandblasting and acid etching (SLA) or alkali-heat treatment (AH) on the Ti-8Ta-3Nb alloy disks. We cultured primary rat calvarial cells on each surface and assessed early cell attachment and proliferation by scanning electron microscopy, cell proliferation, alkaline phosphatase activity. Result: The rates of cell proliferation on the cpTi, Ti-8Ta-3Nb AH disks were higher than others (p<0.05) and alkaline phosphatase activity was significantly enhanced on the Ti-STa-8Nb AH disks(p<0.05). Conclusion: Most favorable cell response was shown on the Ti-8Ta-3Nb AH surfaces. It is supposed that alkali-heat treatment of the Ti-8Ta-3Nb alloy could be induced earlier bone healing and osseointegration than smooth surface.

효율적인 LSF 양자화기를 이용한 QCELP 성능개선

김해진,강상원,Kim, Hae-Jin,Kang, Sang-Won 한국음향학회 1997 韓國音響學會誌 Vol.16 No.1

In this paper, an efficient LSF quantizer, named improved PSVQ(IPSVQ), is proposed to apply in the 8 kbps QCELP speech coder. By using 27 bits IPSVQ instead of 40 bits DPCM quantizer per frame, we can save 13 bits/frame and allocate those bits to the codebook gain and the pitch gain parameters. Hence we improve the overall performance of the QCELP codec. The enhanced QCELP shows the performance improvement of 0.9 dB SNR and 0.4 dB SEGSNR. Informal listening tests also confirm the improvement in the speech quality. 본 논문에서는 LSF계수의 효율적인 양자화기인 improved PSVQ(IPSVQ) 방식을 제안하고, 이를 CDMA 디지틀 이동통신용 음성부호화기인 8 kbps QCELP에 도입하여 QCELP의 성능을 개선하였다. 프레임당 40 비트의 DPCM 양자화방식 대신 27 비트에서 transparent한 성능을 제공하는 IPSVQ 방식을 이용하여 13 비트를 절약하고, 이렇게 절약된 비트들을 음질에 중요한 영향을 끼치는 계수들에 해당하는 코드북 및 피치이득 계수의 양자화에 추가로 할당하여 QCELP의 전체적인 성능을 개선하였다. 객관적인 평가 방법인 SNR 및 SEGSNR이 각각 0.9 dB와 0.4 dB 정도 개선되었으며, 주관적인 음질시험을 통해서 성능향상을 확인할 수 있었다.

마이크로버블에 의한 수질정화 - 해외 적용 사례

김해진,야마모토 타카시,Kim, Hae-Jin 한국어촌어항협회 2013 어항어장 Vol.103 No.-

벼 무논점파 재배 시 효과적인 잡초방제를 위한 중기 제초제 선발

김해진(Hae-jin Kim),이현용(Hyun-yong Lee),유경렬(Kyoung-youl Yu),한기돈(Kee-don Han),유홍재(Hong-jae Yoo),안득현(Deuk-hyun Ahn),유성복(Sung-bock Yu),강동균(Dong-kyun Kang) 한국잡초학회 2014 한국잡초학회 별책(학술대회 초록집) Vol.34 No.2

Series-Corporate feed network를 이용한 X-대역 마이크로스트립 패치 배열안테나 설계

김해진(Hae-Jin Kim),유종인(Jong-In Ryu) 한국통신학회 2019 한국통신학회 학술대회논문집 Vol.2019 No.11

주택재개발사업에 있어서의 주민참여에 관한 연구

김해진(Kim Hae-Jin),장미현(Jang Mi-Hyun),이진원(Lee Jin-Won) 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

The housing redevelopment based on the residents-oriented housing redevelopment initiatives which has been prevalent since 1983 is now administered by a residents participation. The residents participation just described that plays a valuable role in housing redevelopment projects is an agent which is responsible for the enhancement of the welfare of its residents and should be democratic in its nature. In order to fulfill its responsibility successfully, the residents participation is expected to have systematic management strategies concrete objectives and to diagnose the structure of its resident's consciousness. In this research, for the purpose of exploring the characteristics of administration of functions played by residents participation, in housing redevelopment projects. It is hoped that my study will play an important role as reference information that will facilitate a number of further housing redevelopment projects to be implemented.