위치기반서비스를 위한 측위 기술 국제 표준 동향

박진형,박준구,Park, Jin-Hyeong,Park, Jun-Gu 제어로봇시스템학회 2009 제어로봇시스템학회지 Vol.15 No.3

1997년 개념적 형태의 제안 이후 LBS는 위치 기술의 고도화, 인터넷 및 이동통신 기술의 발전 등을 통해 기술적 발전을 거듭해 왔으며 3세대 이후 이동통신 분야에서의 Digital Convergence 흐름을 고려할 때, 향후 Killer Application으로 성장할 것으로 예상된다. 이러한 시점에서 본 논문에서는 위치기반서비스(LBS:Location based service)기술의 흐름을 이해하고 미래의 LBS 기술 발전 방향을 파악하고자 LBS의 표준의 과거와 현재, 그리고 미래를 살펴보고자 한다. 구체적으로 LBS 관련하여 진행 중인 3GPP, 3GPP2, IEEE 등의 기술 표준 단체 및 OMA, OGC, WiMAX Forum등의 서비스 표준 단체에 대한 소개와 표준화 동향에 대하여 분석한다.

선천작은동공 환자에서 홍채당김기를 이용한 백내장 수술 1예

박진형,진경현,Jin-Hyoung Park,Kyung Hyun Jin 대한안과학회 2009 대한안과학회지 Vol.50 No.4

Purpose: To report an case regarding phacoemulsification and intraocularlens (IOL) implantation using an iris retractor in a congenital microcoria patient. Case summary: A 53-year-old male patient visited the office with a complaint of gradual decrease of visual acuity. The patient`s best corrected visual acuity (BCVA) was 0.3, and his refractive index could not be measured, as a very small pupil was observed in both eyes. After applying tropicamide and phenylephrine four times, the refractive index of both eyes remained immeasurable. In addition, on slit-lamp biomicroscopic examination, a nucleosclerotic cataract was observed in both eyes. Any signs of increased intraocular pressure or gonioscopic findings seen in glaucomatous patients was not detected in either eyes. Using an ultrasound biomicroscope and Pentacam, the pupil diameter were 0.31 mm in both eyes, and changed to 0.92 mm in the right eye, and 1.0 mm in the left eye, after applying mydriatics. Phacoemulsification and IOL implantation were performed one month apart from each other, using an iris retractor. On the follow-up examination 2 to 3 months postoperatively, BCVA was 0.7 in the right eye, and 1.0 in the left eye. After the operation, the pupil diameter was not changed before and after mydriasis, and measured 2.53 mm in the right eye, and 2.83 mm in the left eye. Conclusions: The authors have reported a case regarding visual acuity that improved in a congenital microcoria patient performing a phacoemulsification and IOL implantation operation using an iris retractor. J Korean Ophthalmol Soc 2009;50(4):618-623

갑상샘암으로 방사성 요오드 절제술을 시행한 환자들 눈물주머니코안연결술의 시행 성적

박진형,정수경,백지선,양석우,Jin Heung Park,Su Kyung Jung,Ji Sun Paik,Suk Woo Yang 대한안과학회 2014 대한안과학회지 Vol.55 No.3

Purpose: To evaluate the outcomes of endonasal or external dacryocystorhinostomy in patients who underwent radioiodine therapy due to thyroid cancer. Methods: We reviewed retrospectively clinical and microbiological records of patients who had endonasal or external dacryocystorhinostomy after taking radioiodine therapy for thyroid cancer between January 2006 and December 2012. Results: Twenty-three female adult patients with an average age of 50 years (range, 25 to 72 years) were identified. Seven patients underwent unilateral surgery and 16 had bilateral surgery. Among 39 eyes, 1 eye had combined nasal septoplasty, 3 eyes had external dacryocystorhinostomy and 36 eyes had endonasal dacryocystorhinostomy. Dacryocystorhinostomy was performed within 12 months after the last 31I dose in 3 cases and 2 (5%) presented with the symptom of epiphora. The major cause of symptomatic recurrence was restenosis of the lacrimal nasal mucosa due to the formation of scar tissue, thus, the patients underwent revision surgeries. The remaining 37 of the 39 eyes (95%) showed improvement of symptoms. Conclusions: Most patients who underwent dacryocystorhinostomy after 31I therapy due to thyroid cancer showed successful outcomes, especially after more than 1 year post-operatively. The major cause of nasolacrimal duct obstruction was a scar tissue formation in the nasal cavity mucosa. J Korean Ophthalmol Soc 2014;55(3):333-336

Literature Review of Research on Models in Mathematics Education

박진형,이경화,Park, JinHyeong,Lee, Kyeong-Hwa The Korea Society of Educational Studies in Mathem 2014 수학교육학연구 Vol.24 No.3

수학교육에서 논의되고 있는 모델의 의미와 역할에 대한 여러 관점들을 분명히 할 필요성이 제기되고 있음에도 불구하고, 여전히 이에 대한 합의는 찾아보기 어렵다. 이에 본 연구에서는 모델에 대한 선행 연구들을 검토하여 수학교육 연구 공동체에서 논의되고 있는 모델에 대한 여러 관점들을 분명히 하는 데 목적을 둔다. 연구 결과, 모델에 대한 세 가지 관점이 도출되었으며, 모델에 대한 각 관점은 수학적 지식에 대한 존재론적 관점과 모델의 인식론적 역할에 대한 해석과 밀접하게 관련된 것으로 확인되었다. There have been many discussions of models in mathematics education. Although there has been some agreement regarding the importance of clarifying perspectives on the concept and didactic significance of models, there is still no clear consensus on these issues. This study examines articles focused on models in mathematics education in order to clarify theoretical perspectives on models in the research community. The results of this study show that there are three perspectives on models in mathematics education and that these perspectives are closely related to researchers' ontological stances on mathematical knowledge and interpretations of the epistemological role of the model.

GIS-AMR 시스템에서 시공간 데이터마이닝 기법을 이용한 전력 소비 패턴의 분석 및 예측

박진형,이헌규,신진호,류근호,Park, Jin-Hyoung,Lee, Heon-Gyu,Shin, Jin-Ho,Ryu, Keun-Ho 한국정보처리학회 2009 정보처리학회논문지D Vol.16 No.3

이 논문에서는 자동 원격 검침(AMR) 시스템에서 수집되는 전력 사용량 데이터의 분석 결과를 실세계에 적용하기 위하여 시간과 공간의 변화에 따른 전력 소비 패턴의 주기성 탐사를 위한 시공간 데이터마이닝 기법을 제안하였다. 첫째, 고객의 전력 사용 목적에 따른 군집 분석을 위하여 분할 군집화 기법을 적용하였다. 둘째, 3차원 큐브 마이닝 기법을 적용하여 고객의 전력 소비 데이터가 갖는 시간 속성과 공간 속성에 대한 패턴을 탐색하였다. 셋째, 다양한 시간 도메인에서의 주기 패턴 발견을 위한 캘린더 패턴 마이닝 기법을 이용하여 탐사된 패턴들이 갖고 있는 시간 속성의 의미와 관계를 분석 및 예측하였다. 제안된 시공간 데이터마이닝 기법을 평가하기 위해 한국 전력 연구원에서 구축된 GIS-AMR 시스템에 의해 제공되는 고압 전력 소비 고객 3,256명의 2007년 1월부터 4월까지 총 266,426건의 데이터로부터 시간의 주기성 및 공간적 특성을 포함한 전력 소비 패턴을 분석하였다. 제안한 분석 기법을 통하여 특정 그룹에 속한 각각의 대표 프로파일이 시간과 공간상에서 갖는 주기성을 발견하였다. In this paper, the spatiotemporal data mining methodology for detecting a cycle of power consumption pattern with the change of time and spatial was proposed, and applied to the power consumption data collected by GIS-AMR system with an aim to use its resulting knowledge in real world applications. First, partial clustering method was applied for cluster analysis concerned with the aim of customer's power consumption. Second, the patterns of customer's power consumption data which contain time and spatial attribute were detected by 3D cube mining method. Third, using the calendar pattern mining method for detection of cyclic patterns in the various time domains, the meanings and relationships of time attribute which is previously detected patterns were analyzed and predicted. For the evaluation of the proposed spatiotemporal data mining, we analyzed and predicted the power consumption patterns included the cycle of time and spatial feature from total 266,426 data of 3,256 customers with high power consumption from Jan. 2007 to Apr. 2007 supported by the GIS-AMR system in KEPRI. As a result of applying the proposed analysis methodology, cyclic patterns of each representative profiles of a group is identified on time and location.

Cu-CMP에서 Alanine이 Cu와 TaN의 선택비에 미치는 영향

박진형,김민석,백운규,박재근,Park Jin-Hyung,Kim Min-Seok,Paik Ungyu,Park Jea-Gun 한국재료학회 2005 한국재료학회지 Vol.15 No.6

Chemical mechanical polishing (CMP) is an essential process in the production of integrated circuits containing copper interconnects. The effect of alanine in reactive slurries representative of those that might be used in copper CMP was studied with the aim of improving selectivity between copper(Cu) film and tantalum-nitride(TaN) film. We investigated the pH effect of nano-colloidal silica slurry containing alanine through the chemical mechanical polishing test for the 8(inch) blanket wafers as deposited Cu and TaN film, respectively. The copper and tantalum-nitride removal rate decreased with the increase of pH and reaches the neutral at pH 7, then, with the further increase of pH to alkaline, the removal rate rise to increase soddenly. It was found that alkaline slurry has a higher removal rate than acidic and neutral slurries for copper film, but the removal rate of tantalum-nitride does not change much. These tests indicated that alanine may improve the CMP process by controlling the selectivity between Cu and TaN film.

치과 수술 후 뉴로미터를 이용한 전류인지역치의 변화의 분석

박진형,유지원,안종모,옥수민,윤창륙,Park, Jin-Hyung,Ryu, Ji-Won,Ahn, Jong-Mo,Ok, Soo-Min,Yoon, Chang-Lyuk 대한안면통증구강내과학회 2010 Journal of Oral Medicine and Pain Vol.35 No.4

The goal of this study is to contribute to the clinical application by making a quantitative nerve current perception threshold(CPT) examination for the evaluation of numbness that could be occurred after dental surgery, Measurement of CPTs at each different frequencies(2000 Hz, 250 Hz, and 5 Hz) were performed to trigeminal nerve main branch(mandibular division) of 29 patients with dental surgery on mandibular area and 25 normal subjects. There were significant differences in CPTs between patient group and control group.(p<0.05) But, there were no significant between patient male and female in both patient and control group except 2000 Hz was significantly high in the control female.

부산 일부지역에 유행한 장티푸스 환자에 대한 역학적인 조사

박진형,Park, Chin-Hyung 대한예방의학회 1977 예방의학회지 Vol.10 No.1

부산시 남구 문현동 고지대 일원에서 유행한 장티푸스의 전염원과 감염경로를 규명하고 그 관리사업을 1975년 4월 28일부터 동년 6월 3일까지 실시하여 얻은 결과는 다음과 같다. 1. 원인불명의 고열질환은 장티푸스로 동정되었으며 주증상은 복통, 설사, 간장비대, 오심 구토, 비장비대장미진, 회맹부압통등이었다. 2. 평균이병기간은 25.2일이었고 발생율은 1000명당 35.6였다. 3. 장티푸스유행의 전염원은 행려환자로 추정되었다. 4. 발병으로 부터 신고까지의 기간은 $10{\sim}19$일사이가 제일 많았다. 5. 1차 대변배양검사 양성은 38.9%였고 2차 검사성적은 5.6%였다. 6. 연령별 발생분포는 $5{\sim}9$세군이 30.5%로 가장 높았으며 남녀 발생비는 남자가 여자보다 약간 높았다. 7, 교육정도는 국민학교 이하가 66.6%, 생활정도로는 저소득층이 77.8%로 각각 최고율을 점하고 있다. 8. 발병후 의료시설의 이용은 약국이 제일 높고 다음이 한약방, 의원의 순서였다. An epidemiological study was conducted, from April 28 to June 3, 1975, to investigate source and course of infection of typhoid fever occurred in Munhyeon Dong, Nam Gu, Busan. The obtained results were as follows: 1. The entity of unknown febrile disease was identified as Salmonella typhi, D group and it's symptoms were abdominal pain, diarrhea, hepatomegaly, nausea and vomiting, aplenomegaly, rose spots, tenderness of ileocecal region etc., in that order. 2. The average duration from onset to recovery was 25.2 days and incidence rate was 39.5 per 1,000 population. 3. The source of infection was presumed a charity patient. 4. By the duration of report on the cases from onset, 10-19 days group was the highest. 5. The positive rate of initial stool culture was 38.9% and secondary was 5.6%. 6. Distribution of the cases by age and sex showed that 5-9 years old group was the highest as 30.5%, and male was higher than female. 7. Distribution of the cases by education level, under primary school as 66.6% was the highest. By the living standard, the highest was low income earner group as 77.8%. 8. Utilization rate of medical facilites was drug store (41.7%), herbal drug (8.3%), clinic (5.6%) in that order.

간기능검사의 이상 소견으로 발현된 전신성 유전분증 2예

박진형 ( Park Jin Hyeong ),박창근 ( Park Chang Geun ),윤영미 ( Yun Yeong Mi ),현동우 ( Hyeon Dong U ),김은수 ( Kim Eun Su ),박수영 ( Park Su Yeong ),조창민 ( Jo Chang Min ),탁원영 ( Tag Won Yeong ),권영오 ( Kwon Yeong O ),김성국 ( 대한소화기학회 2003 대한소화기학회지 Vol.42 No.4

NORSOK 적용 선박의 Cabin Unit Mock Up 차음성능 계측평가

박진형(Jin-Hyung Park),박형식(Hyung-Sik Park),박노준(No-Jun Park),권혁(Hyuk Kwun),서용석(Yong-Suk Suh),서종수(Jong-Soo Seo) 한국소음진동공학회 2014 한국소음진동공학회 학술대회논문집 Vol.2014 No.10