새로운 축소 차원 확장 루엔버거 관측기를 이용한 유도 전동기의 센서리스 벡터 제어

송주호(Jooho Song),이교범(Kyo-Beum Lee),송중호(Joong-Ho Song),최익(Ick Choy),임묘택(Myotaeg Lim) 대한전기학회 2000 대한전기학회 학술대회 논문집 Vol.2000 No.7

스피드 스케이팅 500 m 스타트 구간의 운동역학적 분석

송주호 ( Jooho Song ),이돈형 ( Donhyung Lee ),문제헌 ( Jeheon Moon ) 한국스포츠정책과학원(구 한국스포츠개발원) 2017 체육과학연구 Vol.28 No.3

[목적] 본 연구의 목적은 스피드 스케이팅 500m 종목 스타트 구간에서 한국 국가대표선수들과 해외 우수선수들의 기술동작과 파워를 비교하여 경기력 향상을 위한 방안을 제시하고 기록에 영향을 미치는 운동역학적 변인들의 관계를 파악하는 것이다. [방법] 연구대상자는 한국 국가대표 스피드 스케이팅 8명(한국선수), 해외스피드 스케이팅 선수 6명(해외선수)이다. 3차원 동작분석을 위하여 고속카메라 5대를 동원하여 국제대회에 참가한 선수들의 스타트 동작 40 m 구간을 촬영하였다. 분석변인은 키네메틱 체인, 100 m 네트 시간, 9 스트로크까지 소요시간, 스타트 2.5 sec 후 신체중심의 이동거리, 신체중심의 속도, 상체각도 가동범위, 무릎관절 각도 가동범위, 푸시오프 각도 가동범위, 정미 파워 출력, 총 파워 손실로 정하였다. [결과] 한국선수의 올바른 키네메틱 체인 비율은 61.2%로 해외선수의 76.0% 보다 낮았다. 9 스트로크까지 소요시간에서는 한국선수들이 2.82±0.25 sec로 해외선수들 2.53±0.11 sec 보다 통계적으로 유의하게 높았다(p=.001). 푸시오프 각도의 가동범위는 한국선수들이 60.15±2.75°로 해외선수들의 64.76±2.55° 보다 통계적으로 유의하게 낮았다(p=.001). 정미 파워 출력은 한국선수들이 887.2±269.9 W로 해외선수들의 1103±264.1 W 보다 통계적으로 유의하게 낮았다(p=.021). 100 m 네트 시간과 관련이 있는 요인은 2.5 sec 후 신체중심의 이동거리(r=-.956, p=.001), 정미 파워 출력(r=-.931, p=.001), 총 파워 손실(r=-.904, p=.001)이다. [결론] 한국선수들의 스타트 구간 기록 향상을 위해서는 올바른 키네메틱 체인을 구사할 수 있는 기술훈련을 통하여 스케이팅의 효율을 극대화해야 한다. 또한 100 m 네트시간과 관련이 있는 정미 파워 출력이 해외선수 들에 비해 낮은 결과로 나타났기 때문에 하지 근 파워를 향상시킬 수 있는 훈련을 도입해야 할 것이다. [Purpose] The purpose of this study was to compare the technique and power of the Korean national athletes and international athletes in the start phase of the 500 m speed skating to improve the performance and to understand the relationship between the biomechanical variables affecting the record. [Method] The subjects were 8 Korean national athletes (Korean athletes) and 6 international athletes (international athletes). For the three dimensional motion analysis, 5 high-speed cameras were used to capture the 40 m start phase of the athletes participating in the international competition. The variables selected for analysis were the kinematic chain, 100 m net time, time to 9 strokes, horizontal position of center of mass after 2.5 sec, range of motion of trunk, knee, push-off angle, net power output, total power loss. [Results] The correct kinematic chain ratio of Korean athletes was 61.2%, which was lower than 76.0% of international athletes. The time to 9 strokes was 2.82±0.25 sec for Korean athletes, which was significantly lower than 2.53±0.11 sec for international athletes (p=.001). The range of motion of the push-off angle was 60.15±2.75° for Korean athletes, which was significantly lower than 64.76±2.55° for international athletes (p=.001). The net power output was 887.2±269.9 W for Korean players and 1103±264.1 W for international players (p=.021). The variables related to the 100 m net time were the horizontal position of center of mass after 2.5 sec (r=-.956, p=.001), the net power output (r=-.931, p=.001), and the total power loss (r=-.904, p=.001). [Conclusion] In order to improve the start performance of Korean athletes, it is necessary to maximize the efficiency of skating through skill training to use the correct kinematic chain. Also power enhancement training is needed to improve leg power because the net power output related with 100 m net time.

식품산업의 발전을 위한 통상정책 방향

송주호(JooHo Song),최지현(Ji-Hyeon Choi),정대희(Dae-Hee Chung),박한울(Hanul Park),김성훈(Sounghun Kim),이동필 한국농촌경제연구원 2012 한국농촌경제연구원 기본연구보고서 Vol.- No.-

Background of Research This study is aimed at suggesting an appropriate trade policy for the food industry in Korea. The growth of food industry has been remarkable recently, but there are relatively fewer studies focused on processed food compared with the studies on agricultural products. Most concerns were centered on how to protect farmers in coping with DDA and FTAs. As a result, tariff rates for agricultural products remain high but tariff rates for processed food remain low in Korea. Therefore, tariffs of raw agricultural products are high and the tariffs of processed products are low in Korea which is contrary to the developed countries. Method of Research When analyzing the protection rate of processed products, tariffs of raw or intermediate products should be considered together with the tariffs of final products. This study calculates the effective protection rates for processed products and raw products using an input-output table. The concession results of processed agricultural products were analyzed in comparison with those of raw agricultural products in the Korea-U.S. FTA and the Korea-EU FTA. A survey of food processing companies was added to find out the barriers in trade and their priorities of interest in trade policy. Research Results and Implications The estimation results show that effective protection rates are higher than nominal protection rate in many processed products. It is somewhat an unexpected result but it tells that many processing companies can import raw products with low in-quota tariff rates within the TRQ system. Korea operates TRQs in 66 major agricultural products in the WTO and some more in FTAs. However, for some highly processed products, such as ice cream, bread and grain cookies, sauces, animal fats, and bean curd, the effective protection rates are lower than nominal protection rates, which is called tariff de-escalation. It needs to be improved in the future. Korea applies relatively few specific tariffs and seasonal tariffs compared with other developed countries. The reform of tariff policy should be oriented to reduce the tariff wedges between raw products and processed products. Also, Korea should use specific tariffs and seasonal tariffs for more tariff lines. TRQ administration should be transferred to more market-oriented methods and for the products of which the TRQ-applicable quantities are increased every year, it needs to be excluded from the TRQ list. Many food processing companies interviewed ask for integrated country-of-origin rules in many FTAs. They also demand more information on each exporting country"s inspection and quarantine regulations. Import licensing procedures should be also improved through consultation and negotiation between the authorities of interested countries.

농식품분야 비관세조치의 경제적 평가

송주호(JooHo Song),김미복(MeeBok Kim),전상곤(SangGon Jun),정대희(DaeHee Jung),임정민(JungMin Lim) 한국농촌경제연구원 2010 한국농촌경제연구원 기본연구보고서 Vol.- No.-

중요도 파라미터를 이용한 문맥화된 단어 표현

송주호(Jooho Song),최병주(Byung-Ju Choi),이상근(SangKeun Lee) 한국정보과학회 2019 한국정보과학회 학술발표논문집 Vol.2019 No.12

2012년 미국 농업법(Farm Bill) 제정 동향과 시사점

송주호(JooHo Song),임정빈(JeongBin Im),이현옥(HyunOk Lee),다니엘 썸너(Daniel Sumner),박한울(Hanul Park) 한국농촌경제연구원 2012 한국농촌경제연구원 정책연구보고서 Vol.- No.-

Since 1949 many provisions of U.S. agricultural policy have been reauthorized every few years as primarily as temporary amendments of Agriculture Adjustment Act of 1938 and the Agricultural Act of 1949. Many provisions of the 2008 Farm Bill expired on September 30, 2012 (the end of the fiscal years for the U.S. federal government). Others will expire on December 31, 2012. The House of Representatives Committee on Agriculture passed a bill out of their committee in the middle of the summer, 2012 that was much like the Bill that passed the full U.S. Senate in the early summer. However, the leadership of the House refused to schedule the bill for consideration. This delay was in part because many members of the House objected to high spending on food programs and some objected to farm subsidy provisions as well. The two bills continued food subsidy programs with little change and authorized continuing environmental and conservation programs. The commodity programs would be modified by eliminating $5 billion per year in direct payments to those with a product history in grains, oilseeds and cotton and replacing that (and ineffective prices supports and price-based income supplements) with “shallow loss” payments that apply when revenue (or price) fall below recent high levels. The new programs could be excessively expensive or have no budget cost depending on yields and prices for major covered commodities. These “shallow loss” subsidies are designed to supplement on top of heavily subsidized crop insurance programs that cover deeper revenue and yield losses. A special provision for the dairy industry would add a supply management quota program requiring periodic cuts in milk producers. Many policy advocates who favor the provisions of the farm bills under consideration argued for passage of the new legislation as soon as possible. They are concerned that in a lame duck session and especially in a new 2013 congressional session, budget pressures will dominate and the budget for farm and food subsidies will be cut substantially. There is a chance that with more time and less election pressure, the farm subsidies will be cut rather than readjusted to spend less on direct payments and more of revenue-based insurance-like support. More pressure to cut crop insurance subsidy rates may also develop as the budget exposure of these program becomes more apparent. Farm Bills are commonly delayed. The 1985 farm bill became law on December 23, 1985, the “1995 Farm Bill” actually became law in the spring of 1996, and the 2007 farm bill did not actually take effect until June of 2008. So, the current impasse was more like business as usual than an aberration. Nonetheless, there is much policy and political concern on the part of advocates of specific policy provisions. Generally those who favor the policies included in the Bill that passed the U.S. Senate and the similar bill that passed the House Agriculture committee express the most concern about the farm bill delay. Others such as Washington Post and other farm subsidy skeptics are pleased that more time has been allotted to debate the course of farm and food subsidies and regulations.

EBS 유아 콘텐츠를 활용한 증강방송 서비스 모델 개발

송주호(Song, Jooho),박성환(Park, Sung-Hwan) 한국방송·미디어공학회 2013 한국방송공학회 학술발표대회 논문집 Vol.2013 No.6

스마트 미디어 환경으로 변화하면서 전에는 볼 수 없었던 다양한 방송 서비스들이 소개되고 있다. 증강현실은 그중 하나로, 스마트 미디어를 위한 주요 서비스로 자리를 잡았으며, 디지털 방송 서비스로도 그 응용 기술이 확산되어 증강방송기술의 연구가 수행되고 있다. 증강방송은 TV 화면에 증강 콘텐츠를 방송 콘텐츠와 겹쳐 보여주는 서비스로, 스마트 기기로 제어하고 연동할 수 있다는 특징을 가지고 있다. 본 논문은 대표적인 유아 프로그램인 ‘방귀대장 뿡뿡이’로 증강방송 콘텐츠를 제작하여 시연함으로써 다양한 증강방송 활용 모델을 제시했다.

새로운 축소 차원 확장 루엔버거 관측기를 이용한 유도 전동기의 센서리스 벡터제어

李敎範(Kyo-Beum Lee),宋周澔(Jooho Song),宋重鎬(Joong-Ho Song),崔翼(Ick Choy) 대한전기학회 2004 전기학회논문지 B Vol.53 No.3

플라잉디스크 백핸드 던지기 종류에 따른 기술 전략 분석: 사례연구

김미향 ( Kim¸ Meehyang ),송주호 ( Song¸ Jooho ) 한국체육학회 2021 한국체육학회지 Vol.60 No.1

본 연구의 목적은 플라잉디스크 백핸드 던지기 중 스트레이트(ST), 하이저(H), 앤하이저(AH)에 대한 기술 전략의 정량적 기초자료를 제공하기 위해 수행하였다. 플라잉디스크 던지기 동작에 대한 생체역학적 분석을 위해 3차원 동작분석 시스템(적외선 카메라, 지면반력기)을 사용하였고 측정 대상자는 대한플라잉디스크연맹(KFDF)으로부터 추천 받은 엘리트 선수를 대상으로 측정하고 분석하였다. 분석한 결과 다음과 같은 결론을 얻었다. 플라잉디스크 백핸드 던지기의 효율적인 움직임을 위하여 상지 관절의 최대 선속도 발현 시점이 근위 분절에서 원위 분절로 이어져야하며, 그리고 ST는 근위 관절의 좌우 움직임과 원위 관절의 전후 움직임, H는 전반적으로 수직 움직임, AH는 손 관절의 전후 및 수직 움직임이 비교적 중요한 것으로 나타났다. 지면반력 분석결과 ST동작은 우측, AH동작은 후방으로의 힘이 가장 크게 나타나야 하며, H동작에서는 수직 방향으로 힘이 가장 크게 나타나야 한다. The purpose of this study was to provide objective and quantitative data regarding three backhand throwing skill movements (Straight, ST; Hyzer, H; Anhyzer, AH) in flying disc. We found that the player exhibited the consecutive movement pattern in upper extremity, indicating kinetics chain. We further observed that the flying disc trajectories were differently shown regarding throwing skill movements. Particularly, we found three including lateral horizontal axis movement of proximal joints in ST, vertical axis movement in H, and forward/backward movement in AH. For the GRF result, we observed the greatest forces in the lateral direction at ST movement, in the posterior direction at AH movement, and in the vertical direction at H movement.

DDA 농업협상 개도국 긴급특별관세(SSM) 쟁점분석

김태훈(Tae-Hoon Kim),송주호(JooHo Song),정대희(Dae-Hee Chung) 한국농촌경제연구원 2010 한국농촌경제연구원 정책연구보고서 Vol.- No.-

이 연구는 최근 DDA 협상에서 논의되고 있는 SSM 관련 주요 쟁점사안에 대해 주요국 수입 또는 수출 통계를 활용하여 시뮬레이션 분석을 수행하였다. SSM 주요 이슈에 대한 분석결과를 요약하면 다음과 같다. 우선 한국, 미국, 일본의 SSG 발동실적을 보면 SSG 발동 시 수입량이 전후 2~3년 평균 수입량보다 확연히 감소하지 않아 정상수입을 저해했다고 주장하기 어렵다. 따라서 SSG와 유사한 SSM이 발동되었을 때 정상수입을 저해할 것이라는 막연한 주장은 근거가 없다. 더구나 SSG 발동 시 수입량과 정상교역량(발동되지 않았을 때 평균 수입량)을 비교했을 때 0~50% 감소하는 빈도수가 가장 많았으나 오히려 수입이 증가한 빈도수도 많아 호주의 분석가정인 SSM 발동 시 수입 중지는 지나치게 강한 가정으로 판단된다. Pro-rating을 적용하여 SSM 누적 발동을 검토한 결과, SSM 발동 시 수입량 가정에 상관없이 pro-rating 도입은 발동수준을 높여 SSM 발동을 제한하는 것으로 나타났다. 수입추세별로 보면 수입증가추세 품목이 상대적으로 빈번하게 SSM이 발동하고 pro-rating의 효과가 크게 나타났다. SSM 발동 시 수입이 중지된다고 가정하면 pro-rating의 영향(SSM 발동 제한)이 크게 나타나는 반면 실수입량의 75%를 가정하면 pro-rating의 영향은 미미한 것으로 나타났다. 미국, 브라질, 호주의 주요 수출품목의 월별 수출비중을 살펴 본 결과, 품목과 국가에 따라 계절성 유무가 다르게 나타났다. 따라서 명확한 기준을 가지고 계절성을 도입하기에는 많은 문제가 있을 것으로 보인다. Cross-check의 도입은 SSM 발동횟수를 매우 크게 감소시키고 발동저해 정도가 지나침에 따라 SSM 도입의 원래 취지를 훼손하여 의무도입은 불가한 것으로 판단된다. Duration/spill over 기간 변화는 평균적으로 기간이 길수록 수입량이 감소하는 것으로 분석되었다. 하지만 기간연장의 일정한 방향을 발견하기 어려웠다. 이는 Duration과 spill over 간의 영향과 x month on/off의 상호 영향 때문인 것으로 판단되며 좀 더 세밀한 분석이 필요하다. The purpose of this study is to analyze the recent discussions regarding the 4th revised modality draft for the Special Safeguard Mechanism (SSM) on trade in the DDA. Empirical data was used to examine several outstanding issues in the SSM negotiations. The analysis results are as follows. First, since the SSM is not yet operational, the concerns for its frequent use can only be assessed by examining the similar instrument SSG (Special Safeguard). If the import volume during SSG-invoked months is compared with that of non-SSG months in Korea, Japan, and the U.S. under the Uruguay Round, the import volume during SSG-invoked months did not show any decisive evidence of a decline. In this context, the exporting countries" argument that the invocation of the SSM would inhibit trade growth is unfounded. It would be unreasonable to analyze the impact of the SSM on the assumption that import would be zero if the SSM is invoked. Secondly, pro-rating has been analyzed. The simulation result indicates that introduction of pro-rating in calculating the 3-year rolling average of import volume increases trigger levels by a significant amount, thus limiting the chance of invocating the SSM. If import volume is assumed to be zero under an invoked SSM, the effect of pro-rating would be significant. But if import volume is assumed to decline by 25% under the SSM, then the effect of pro-rating becomes smaller. Thirdly, the existence of seasonality for agricultural products was analyzed using monthly data of U.S., Brazil and Australia. The results show that seasonality might exist in production and export of some commodities in some countries, but it is very different country by country and product by product. From the importing countries" point of view, import volume might not change during a given year. Thus, seasonality is not a pattern that is prevalent in all products and thus should not be accepted in the modalities for the SSM. Fourth, the application of cross check would restrict the chance of the SSM being invoked and thus severely undermine the purpose of introducing the SSM in the DDA. There may be considerable time lags between import surges and its impact on domestic markets. Also establishing domestic prices for each tariff line will be very difficult, thus making the SSM unworkable for many developing countries if cross check becomes a mandatory condition. Lastly, regarding the duration and/or spill-over of remedies, it is found that the longer the period, the stronger the impact on import on average. However, it did not show a consistent sign. The reason might be explained by the trade-offs between duration/spill-over and x-month on/off.