반조절성교합기와 Axiograph를 이용한 전방시상과로각 차이에 관한 연구

박건호,이성복,백진,최대균,Park, Geon-Ho,Lee, Sung-Bok,Bak, Jin,Choi, Dae-Gyun 대한치과보철학회 2007 대한치과보철학회지 Vol.45 No.5

Statement of problem: In the Protar articulator, the models are almost parallel with the Camper's plane. The ultrasonic-based ARCUSdigma system is basis for the determination of dynamic function parameters with so-called "articulator related registration". Purpose: The purpose of this study was to compare the sagittal condylar guidance angles found by use of the wax protrusive records in a semi-adjustable articulator(KaVo Protar 7) with those found by use of the Axiograph (ARCUSdigma). 83 volunteers with intact dentition participated in this study after obtainment of informed consent. Material and method: The sagittal condylar guidance angles were measured and estimated statistically by semi-articulator and Axiograph. All the readings were in degrees. No control was used in this project. To test whether there was a significant difference between the 2 independent samples, paired t-test and Kruskal-Wallis test were carried out(p=.05). Results: 1. The mean results for the wax protrusive records were as follow: right side (32.65 degrees, SD 16.48); left side (33.27 degrees, SD 17.49). 2. The mean results for the Axiograph were as follow: right side (32.26 degrees, SD 7.00); left side (33.07 degrees, SD 7.58). 3. There was no statistical difference on the wax protrusive records and Axiograph(p>0.05). Conclusion: Both methods of wax protrusive records and Axiograph are clinically acceptable for measuring the sagittal condylar guidance angles in semi-adjustable articulators.

의사결정력 향상의 받침대로써 시뮬레이션의 역할과 시뮬레이션프로그램의 개발 방향

박건호 한국사회과교육학회 1999 시민교육연구 Vol.28 No.1

비가츠키이론에 따르면, 놀이가 아동에게 주는 역할과 같이 시뮬레이션은 학습자의 발달을 위한 훌륭한 도구(tool)가 된다. 즉, 시뮬레이션은 학습자에게 사회에서 이용가능한 지식과 기능을 습득시킬 수 있고, 의사 결정을 위해 필요한 정보를 수집하고 이를 재구성하도록 유도할 수 있으며, 문제 해결 과정을 통해 잠재적 발달수준(potential development level)을 향상시킬 수 있다. 사회과에서의 의사결정력은 사회적 상황에 대한 올바른 이해와 문제 파악이 전제되어야 하는데, 시뮬레이션은 학습자에게 사회적 상황을 체험할 수 있는 기회를 제공한다. 그러므로, 사회과 교수-학습에서 시뮬레이션의 역할은 학습자가 보다 진전된 다른 상황이나 실제상황에 직면했을 때, 그 상황에서 발생하는 문제를 해결할 수 있는 의사결정력을 향상시키는 '받침대(scaffold)'로써 기능하게 된다. 비가츠키이론을 바탕으로 시뮬레이션프로그램의 개발 방향을 제시하면 다음과 같다. 첫째, 제시하는 개념과 상황은 학습자의 잠재적 발달수준에 상응하여 다른 난이도를 가지고 단계적으로 제공되어야 한다. 둘째, 제시한 문제를 해결하는 과정에서 협동학습을 통해 타자와의 상호작용이 이루어지도록 대화식으로 설계해야 한다. 셋째, 시각적 화상들을 다양하게 제시하고 의사결정 사례들의 획일적이 되지 않도록 제공해야 한다. 넷째, 학습자의 의사결정력을 평가하는 수행평가과정이 포함되도록 제작해야 한다. According to Vygotsky's theory, simulation is an effective tool on learners, just as the role of play in childhood. That is to say, simulation can help learners acquire some useful knowledge and skills in society, and promote learner to collect and reconstruct informations for decision making, and raise the potential development level. Decision making ability in social studies is premised on proper understanding problems in social context, and simulation gives learners an opportunity of undergoing social situation. Therefore, simulation in social studies education, when learners are faced with more advanced situation or actual one, is functioned as a scaffold for decision making to solve some problems in the situation. Based on Vygotskian theory, several suggestions could be made in programming simulation. First, simulation program can give learners, different levels of concepts and situations corresponding to learner's potential development level. Second, simulation program must be designed dialogically for the cooperation learning, in which interactions are made with others during the decision making process to solve problems. Third, simulation program can suggest various visual displays and examples of decision making. Fourth, simulation program must include the performance assessment procedure which evaluates learner's decision making ability.

사과문

박건호 로얄에이알씨 주식회사 2009 로얄동물임상의학 Vol.7 No.3

[토론] “주민이 있는 주민자치를 희망한다”

박건호 한국자치학회 2020 월간 주민자치 Vol.99 No.-

[‘주민자치 실질화를 위한 주민자치센터 운영 실태와 마을강좌 방향성 탐색’ 토론] “마을강좌 통한 주민자치역량 확보 시급”

박건호 한국자치학회 2018 월간 주민자치 Vol.84 No.-

발전플랜트 드라이브(On-Off MOV)로직 최적 적용 방안 연구

박건호 한국에너지학회 2018 한국에너지공학회 학술발표회 Vol.2018 No.04

PVT Variation 보상을 위한 Dynamically Phase Error 추적 기능을 갖춘 저전력 All Digital Delay Locked Loop

박건호,이재진,오성진,이강윤 한국전자파학회 2020 한국전자파학회논문지 Vol.31 No.7

본 논문은 저전력 Replica based all digital delay locked loop(ADDLL)를 제안한다. ADDLL에서 Phase detector(PD)는 위상차이를 감지하고, Accumulator(ACC)는 input clock 대비 output clock이 lead되거나 delay되는 시간을 카운트하여 증가시키거나 감소시킨다. 또한 Analog DLL에서 Charge pump(CP), Loop filter (LF)와 Voltage controlled delay line(VCDL)대신Accumulator(ACC)와 Digitally controlled delay line(DCDL)으로 교체해 Loop filter의 누설 전류를 줄이고, 크기를 줄인다. 본 논문에서는 ADDLL은 Replica DCDL을 이용하여 DLL이 잠긴 이후 temperature나 supply voltage가 변함으로 인해 발생될 수 있는 위상 오차를 감지하는 기술을 설명한다. ACC는 Main DCDL 내부의 delay를 조정하고 350~900 MHz의Operation frequency를 제공한다. 제안하는 ADDLL은 180 nm CMOS 공정으로 설계되었고, 625 MHz에서 Supply voltage 1.8 V를 사용하여 12 mW의 전력소모를 가진다. 레이아웃의 총 크기는 250×300 μm이다.

빔포밍을 위한 저 전력 능동형 위상 천이기

박건호,박철순 한국ITS학회 2018 한국ITS학회 학술대회 Vol.2018 No.04

악성 전이 소견을 보인 양측 난소에 발생한 Sertoli-Leydig Cell Tumor 1예

박건호,김현희,윤혜진,최재호,윤민선,백승삼,호정규,김경태 대한부인종양 콜포스코피학회 2003 Journal of Gynecologic Oncology Vol.14 No.1

Sertoli-Leydig cell tumor는 드문 성색간질성 종양으로 양측성의 소견은 1% 미만으로 드물고 low grade malignancy에 속한다. 재발은 드물다고 알려져 있는데, 2/3가 초기 치료 후 1년 이내에 발생되고 복강내부와 후복막 림프절이 재발의 호발부위이다. 조직학적 분화도가 나쁘고 retiform pattern과 tumor rupture인 경우 악성화의빈도가 높다고 알려져 있다. 치료는 젊은 여성의 경우 병기 I일 때에는 자궁과 임신기능을 보존하는 편측 난소난관절제술을 시행한다. 1기보다 높은 병기일 경우 전자궁적출술 및 양측난소난관절제술, 골반림프절 곽청술을 시행하고 항암화학요법을 시행하기도 한다. 저자 등은 악성전이를 한 양측성 Sertoli-Leydig cell tumor를 경험하였기에 간단한 문헌 고찰과 함께 보고하는 바이다. The Sertoli-Leydig cell tumor is a rare sex cord stromal tumor that has low grade malignancy and low bilateral occurrence rate. About two third of recurrence appears within 1 year after the initial treatment and most common recurrence sites are intraperitoneal cavity and retroperitoneal lymph nodes. The frequency of malignant transformation is high in the poor differentiated cell type, retiform pattern, and tumor rupture. In young women with stage I, unilateral salpingo-oophorectomy is performed to preserve uterus and reproductive function. In more advanced stages, hysterectomy, bilateral salpingo-oophorectomy, and pelvic lymph node dissection are performed and occasionally chemotherapy can be combined. We experienced a rare case of malignant metastasis in Sertoli-Leydig cell tumor, and presented with a brief review of literature.

野山開墾地에서 大豆에 대한 窒素施肥 方法이 諸形質變化 및 收量에 미치는 影響

朴建鎬 圓光大學校大學院 1984 學位論叢 Vol.13 No.-

For the increase of soybean yield in newly reclaimed area, this experiment was carried out in Kimje (plain area) and Jinan (hilly area) to determine the effect of nitrogen topdressing on agronomic characters. grain yields, protein and oil contents of soybean in 1982~1983. The results obtained were summarized as follows; 1. During growing period, average mean temperatures were similar, but amounts of rainfall and sunshine hours were smaller in Jinan than in Kirn je. 2. Applications of sufficient amounts of phosphates and lime increased available P20S and exchangeable Ca contents on both soils to optimum levels within one year after reclamation. 3. Days required for flowering (days from sowing to flowering) were shortened as sowing dates were later. 4. Nitrogen topdressing at flowering shortened the length of branches, but increased number of branches per plant, thus preventing over-thriving and lodging as compared with basal fertilization. 5. Nitrogen topdressing at flowering increased number of pods per plant and weight of 100 seeds. 6. Significant positive correlation were observed between grain yield and stem length, number of branches per plant, number of pods per plant, and weight of dry matter. 7. A significant negative correlation was obtained between grain yield without topdressing and yield increasing index by topdressing. The result indicates that nitrigen topdressing may be very effective practice III newly reclaimed area. 8. Soybean seeds produed in Jinan had higher protein contents than there of in Kimje. Higher protein contents in grains were noted with nitr ogen topdressing than without topdressing (only basal fertilization). Tendency of oil content was just opposite to above results of protein content. The protein content was significantly negative correlates with oil contents, regardless of area and varieties. 9. Total nitrogen content by Danyeobkong(medium type) plants was increased continuously until maturing stage, but that by Kwangkyo (limited type) plants showed the peak at 30 days after flowering. Total nitrogen content by plants at 30 days after flowering was significantly correlated with grain yield of soybeans. 10. The order of distribution ratio among plant parts in nitrogen content at maturing stage was mainstem < branch < pod < seed. The distribution ratio in seed was highest in the plants that receiving nitrogen topdressed at flowering. 11. Application of 8kg/l0a nitrogen as only basal fertilization inhibited formation of nodules in soybean roots, and nitrogen topdressing tended to decrease their sizes. 12. Topdressing of 4kg/10a nitrogen at flowering stage increased grain yields by 23-36% and 18-27% in Danyeobkong, and by 15-56% and 20-28% in Kwangkyo , III Kimje and Jinan respectively.