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GPS 반송파 위상변화율을 이용한 SDINS/GPS 복합항법 필터 구성
박준구(Joon-Goo Park) 한국항공우주학회 2006 韓國航空宇宙學會誌 Vol.34 No.11
SDINS 운항중 정렬에 적용 가능한 GPS 반송파 위상변화율 측정 모델을 유도하여 새로운 SDINS/GPS 복합항법 시스템 구성 방법을 제안한다. 제안된 SDINS/GPS 복합항법 필터의 성능 분석을 공분산 해석기법을 이용하여 수행하고 이의 결과를 실제 차량 실험을 통하여 검증한다. 제안된 결합기법은 2개 이상의 안테나를 갖는 SDINS/GPS 결합시스템에 적용가능하며 기수각 추정에 직접적으로 연계된 GPS 측정치를 생성함으로써 빠른 SDINS의 기수각 추정을 가능하게 함으로써 SDINS/GPS의 항법 성능을 향상시키게 된다. As an application of SDINS/GPS integration for its synergistic results, the SDINS alignments utilizing GPS carrier phase rate measurements. A measurement model of GPS carrier phase rate is derived in order to be used with SDINS alignment process. For in-flight alignment, the performance of the suggested SDINS/GPS integration method is analyzed using the covariance analysis and its results are confirmed by those of van test. Consequently, it is shown that all states of the SDINS integrated system by utilizing GPS carrier phase rate measurements can be estimated more efficiently than a general SDINS/GPS during in-flight alignment
20 주간의 신체운동이 노인들의 신체구성 성분과 체력에 미치는 영향
박준기(Joon Ki Park) 한국사회체육학회 2001 한국사회체육학회지 Vol.16 No.-
The purpose of this study was to investigate the effects of 20 weeks exercise in 60-70 years old women. The subject were participated 78 old women who have not any routine exercise in 10 years more and exercise was 50-60mjn./day, 5 days/week, 50-60% HR max intensity. The obtained results were as follows; 1. Body weight, % body fat, BMI and circumference of thigh had no significant difference. 2. Systolic BP was significant difference(p<.05), diastolic BP was no significant difference. 3. Grip strength and leg strength were no significant difference. 4. Balance and stick reaction time were significant difference(p<.05). In conclusion, 20 weeks exercise program were prevention of injury and health management of old women as a decreased systolic BP and enhanced balance and agility.
설계 민감도법을 이용한 유도 전기장 분포 제어를 위한 철심구조 최적화 연구
朴俊枸(Park Joon Goo) 대한전기학회 2006 전기학회논문지 D Vol.55 No.8
An optimized iron core structure of stimulating coil are presented in order to control the induced electric field distribution using the Continuum Design Sensitivity Analysis (CDSA) combined with a commercially available generalized finite element code (OPERA). The results show that a Figure-Of-Eight (FOE) coil as well as a circular coil with the proposed iron core structure can increase induced electric field intensity by more than two times and make better field localization, compared with those of existing stimulation coil with a air core. After considering manufacturing constraints, a practical iron core structure based on the proposed optimized one is proposed and its performance is analyzed.
박준기(Joon-Kee Park),박성재(Seong-Jae Park),김광수(Kwang-Soo Kim) 한국농촌경제연구원 2011 한국농촌경제연구원 기본연구보고서 Vol.- No.-
The purpose of this study is to analyze the actual condition of the agricultural investment policy system and to propose directions of improvement in the position of a local government. The UR agreement in 1992 and the progress of localization brought a paradigm shift of agricultural investment policy. The system of agricultural investment policy was changed from a top-down system to a bottom-up system. This shift meant that the price support by the government was abolished and the policy consumers (local government, farmers and the agencies concerned) can apply for their required businesses to the central government or a local government. Because of localization and the bottom-up system, the role of local governments has been becoming significant. Local governments are playing an important role in implementing agricultural policy in farming fields and rural districts. But until now, the analyses and researches of the agricultural investment system have been performed in the viewpoint of the central government. Many researchers presumed that the central government and local governments would have the same purpose and direction of agricultural investment policy. As the analysis results of the current situation of agricultural investment policy show, local governments have some different purpose of agricultural policy from the central government. The central government has been trying to improve the competitiveness of agriculture, increase farm size, and promote specialized farming. But the first purpose of local governments is to maintain or increase their local communities. The local governments that have lots of disadvantageous areas in their administrative districts make full use of agricultural investment policy for achieving their first purpose, that is, to keep their community. The central government and a local government should have a correct understanding that the purpose of agricultural investment policy might be different between the two governments. However, a local government has weak fiscal power and it is almost impossible for the local government to perform its own agricultural investment policy without support from the central government. Because of that, the current system of agricultural investment policy needs to be changed in the position of a local government, following the localization paradigm. On the basis of the analyses of the current agricultural investment system, this study suggested some policy directions for improving the performance of agricultural investment policy. First, it is important to reshape the principle and role of agricultural investment policy between the central government and a local government. The agricultural investment system needs to be changed to enlarge the autonomy of a local government. The concrete methods are diversification of agricultural investment supporting means, expansion of the block grant system, and reduction of inefficient farm input support. Second, it needs to improve the effectiveness of agricultural investment policy. Many public officials in charge of implementing agricultural policy insisted that the communication system between the central government and a local government must be improved to increase the effectiveness of agricultural investment policy. And it is important to improve the follow-up control system of agricultural investment policy and merge similar unit investment businesses.
장기간 운전이 신체구성, 혈압과 혈중 지질 농도에 미치는 영향
박준기(Park Joon-Ki) 한국체육과학회 2000 한국체육과학회지 Vol.9 No.1
The purpose of this study was to investigate of blood pressure, body composition and blood lipid in taxi drivers by routine soccer exercise 8 years more group(n=13) and non-exercise control group(n=11). Exercise group was soccer game 2-3.30PM 3 days/week and exercise intensity was HRmax 60-75%. Conclusion were as follows; 1. Routine soccer exercise group was significant low in sBP, but ㏈Pwas not significant different. 2. TC, TG, LDL-C and TC/HDL-C ratio were significant different between rourine soccer exercise group and non exercise group. 3. HDL-C was significant high in routine soccer exercise group. 4. In conclusion, Routine exercise is to prevention the various hypokinetic diseases and to health promotion of taxi driver.