통근비용절감을 통한 서울근교도시 거주자의 주택구입능력 개선효과

최정우,백성준,이종훈,Choi, Jung-Woo,Baek, Sung-Joon,Lee, Jong-Hoon 한국주거학회 2012 한국주거학회 논문집 Vol.23 No.5

This study has analyzed the effect of the housing affordability improvement of the residents in the metropolitan areas, applying Transit Supportive Home Loan (TSHL) which extends the loan amount according to the transportation cost saving based on Location Efficiency Mortgage (LEM) System in the USA. The previous studies focused on introducing LEM system to Korea, whereas this study has analyzed TSHL effect for the first time, taking into account the situation in Korea. For analysis, The Transportation Savings (TS) is calculated and Housing Affordability Index (HAI) is drawn by applying increased TS and DTI (Debt to Income), so the improvements of housing purchasing ability is examined by HAI's improvement. As a result, transit commute 1 (having own car) and transit commute 2 (without having own cars) respectively produce the TS of monthly average 36 thousand won and 110 thousand won in comparison with car using commute. Each additional loan (TSHL) amounts to 16.57 million won and 54.07 million won. As the distance is farther and the house price cheaper, the improvement of HAI is more outstanding. City hall area showed the highest improvements of HAI by 9.3% (transit commute 1) and 21.9% (transit commute 2) increase, in comparison with car using commute.

뇌졸중 후 양안의 동측 상방 수평반맹을 호소하는 환자 한의 치험 1례

최정우,김서영,김하리,신희연,양승보,조승연,박성욱,고창남,박정미,Choi, Jeong-Woo,Kim, Seo-Young,Kim, Ha-Ri,Shin, Hee-Yeon,Yang, Seung-Bo,Cho, Seung-Yeon,Park, Seong-Uk,Ko, Chang-Nam,Park, Jung-Mi 대한중풍순환신경학회 2019 대한중풍.순환신경학회지 Vol.20 No.1

■ Objectives The purpose is to report the case of Korean medicine in the treatment of bilateral superior altitudinal hemianopia after a stroke. ■ Methods The patient was treated with acupuncture, electroacupuncture, bee venom, and herbal medicine. The visual field defect was assessed using humphrey visual field analyzer and confrontation visual field test. ■ Results After treatment, humphrey visual field analyzer and confrontation visual field test showed improvement in field of vision ■ Conclusion This study suggested that Korean medical treatment could be an effective option for treating visual field defect after stroke.

탄산칼슘 분말을 충진시킨 열가소성 탄성체 복합재의 제조 및 차음 특성

최정우,황연,Choi, Jung-Woo,Hwang, Yeon 한국재료학회 2010 한국재료학회지 Vol.20 No.9

Composites of ceramic powders and an elastomer-based matrix were prepared by mixing $CaCO_3$ powders with polyethylene and polypropylene elastomers, and their mechanical and sound insulation properties were measured. $CaCO_3$ powders with 0.7 ${\mu}m$ and 35 ${\mu}m$ particle size were added to elastomers up to 80 wt%. Scanning electron microscopy photographs showed uniform distribution of the $CaCO_3$ powders in the matrix. While density and surface hardness increased, melt index, tensile strength and elongation of the composites decreased as the amount of added $CaCO_3$ powders increased. As more $CaCO_3$ powders were added sound transmission loss of the composites increased owing to the increase of density. Addition of 0.7 ${\mu}m$ sized $CaCO_3$ powders resulted in a slightly higher transmission loss than the addition of 35 ${\mu}m$ sized powders because of the increased interface area between the elastomer matrix and the $CaCO_3$ powders. Composites with a polyethylene matrix showed higher transmission loss than those with a polypropylene matrix because the tensile strength and hardness of the polyethylene-based composites were low and their elongation was high.

보행장애를 호소하는 초기 다계통 위축증(MSA-C) 환자 한의 치험 1례

최정우,김서영,김하리,전규리,조승연,박성욱,박정미,고창남,Choi, Jeong-Woo,Kim, Seo-Young,Kim, Ha-Ri,Jeon, Gyu-Ri,Cho, Seung-Yeon,Park, Seong-Uk,Park, Jung-Mi,Ko, Chang-Nam 대한중풍순환신경학회 2020 대한중풍.순환신경학회지 Vol.21 No.1

■ Objectives The purpose of this case is to report the effectiveness of Korean medicine in the treatment of early stage multiple system atrophy-cerebellar ataxia(MSA-C) ■ Methods The patient was treated with acupuncture, bee venom, and herbal medicine. The clinical symptoms was assessed using unified multiple system atrophy rating scale(UMSARS) and 20M gait time and steps. ■ Results After treatment, UMSARS score and 20M gait time and steps showed improvement. ■ Conclusion This study suggested that Korean medical treatment could be an effective option for treating early stage MSA-C.

약물 중단에도 지속되는 약인성 파킨슨증후군 환자의 한의 치험 1례

최정우,김서영,전규리,황예채,조승연,박정미,고창남,박성욱,Choi, Jeong-woo,Kim, Seo-young,Jun, Gyu-ri,Hwang, Ye-chae,Cho, Seung-yeon,Park, Jung-mi,Ko, Chang-nam,Park, Seong-uk 대한한방내과학회 2021 大韓韓方內科學會誌 Vol.42 No.6

This study examined the effectiveness of Korean medical treatment in a patient with persistent drug-induced parkinsonism after drug discontinuation. The changes in symptoms were assessed using the unified parkinson's disease rating scale (UPDRS), postural instability-gait disturbance (PIGD) score, and the 20 m gait time and steps. After 22 days of hospitalization, the UPDRS, PIGD score, and 20 m gait time and steps showed clinically significant improvement. The improvement persisted after discharge. This study indicated that Korean medical treatment could be an effective alternative therapy for treating persistent drug-induced parkinsonism after drug discontinuation.

음향 대조 및 밝기 제어

최정우(Jung-Woo Choi),김양한(Yang-Hann Kim) 한국소음진동공학회 2012 한국소음진동공학회 학술대회논문집 Vol.2012 No.4

본 논문에서는 공간상의 서로 다른 영역에 소리를 집중하거나 파면의 전파 형상을 제어 가능케 하는 음향 밝기 및 대조 제어의 기초 이론을 서로 다른 제한 조건의 관점에서 살펴보았다. 밝기 및 대조 제어는 소형 모바일 기기에서 DTV, 항공기 실내 등 다양한 분야에서 활발히 연구되고 있으며, 향후 홈 환경과 같이 음향반사가 심한 공간에서도 사적이고 쾌적한 음향청취 공간을 제공하는데 활용될 수 있다. Acoustic brightness and contrast control are promising techniques for manipulating acoustic energy over selected zones of interest using loudspeaker arrays. In this paper, the fundamental theory and concept of the brightness and contrast control is reviewed. The similarity and difference of two different strategies are explained in terms of the constraint required to determine a unique solution among many possible candidates. The application examples and recent progresses of the brightness and contrast control are presented.

스피커 어레이를 사용한 음장 렌더링 기법 및 응용 사례

최정우(Jung-Woo Choi) 한국소음진동공학회 2015 한국소음진동공학회 학술대회논문집 Vol.2015 No.4

In recent years, acoustic array technologies incorporating multiple loudspeakers have changed the way we enjoy the sound. With loudspeaker arrays, one can change the shape of an existing sound field as we want or even can create a completely new one. In this paper, two representative problems related to sound field shaping are presented. The first is the synthesis of a personal sound zone, and, the second is the creation of holographic “sound balls.” Through the shaping of sound in space, sound fields can be focused over a selected area to form a personal sound zone within which a person hears only a determined sound program, without being disturbed by other unwanted sound programs. In addition to focusing sound fields, it is possible to control a sound wavefront to produce virtual sound sources or virtual “sound balls” with various radiation patterns in a source-free space. The underlying array signal processing theories are introduced with commercial prototypes designed for home and automobile applications.

보통교부세 인센티브 제도에 대한 지방자치단체의 정책순응 분석

최정우 ( Jung Woo Choi ) 한국정책학회 2020 韓國政策學會報 Vol.29 No.1

지방재정에 있어 큰 수입원인 지방교부세는 지방자치단체의 재정운용의 건전성과 효율성을 확보하기 위한 수단으로 인센티브 제도를 포함한다. 이에 본 연구는 정책대상집단인 지방자치단체의 정책순응 여부를 분석하기 위해 2012년부터 2018년의 자료를 바탕으로 기초자치단체의 정책순응을 패널로짓분석을 통해 분석하였다. 분석결과에 따르면 인센티브 제도에 있어 인센티브 보다는 패널티에 보다 적극적인 정책순응을 보이고 있는 것을 확인하였다. Local grant tax, a large source of income in local finance, includes an incentive system as a means to secure the integrity and efficiency of a local government’s financial operation. Thus, to analyze the policy compliance of local governments, the policy target group, this study analyzed the policy compliance of the local governments based on data from 2012 through 2018 through a panel logit analysis. According to the result of the analysis, they showed more active policy compliance to a penalty rather than an incentive in the incentive system.

지방자치단체의 정책순응에 대한 부정성 편향 분석 : 보통교부세 인센티브 제도를 중심으로

최정우 ( Choi Jung Woo ) 한국지방행정연구원 2019 地方行政硏究 Vol.33 No.4

Decisions on policy compliance by the target groups for policy are made by expected net benefits. Such decisions, however, may be made according to negativity bias by placing higher value on damages than profits. Therefore, assuming that there is also a negativity bias in local governments' compliance with the incentive system for local shared tax which means that local governments also have higher level of policy compliance with penalties than with incentives within the tax, this study conducted analysis on this through survival analysis. As a result, study verified that the penalty could work as a better means of inducing policy compliance than the incentive at a statistically significant level, which suggests that negativity bias may play a role in local governments’ policy compliance.

서울시 재산세 공동과세제도가 자치구의 재정건전성에 미치는 영향 분석

최정우 ( Jung Woo Choi ),김나래 ( Na-Rae Kim ),배수호 ( Su Ho Bae ) 한국정책학회 2012 韓國政策學會報 Vol.21 No.2

본 연구는 2008년에 도입된 서울시 재산세 공동과세제도가 자치구의 재정건전성에 미치는 영향에 대한 실증분석에 중점을 두고 있다. 이를 위해 25개 서울시 자치구를 대상으로 구축된 2005년부터 2010년까지 6년치 패널 자료를 활용하여 재정건전성을 경상경비 비율, 자본지출비, 자체사업비율, 자체세입비율 등 네 가지 측면에서 분석한다. 분석방법으로 집단 간 비교분석과 회귀분석을 활용한다. 서울시 25개 자치구 전체를 대상으로 한 분석결과에 따르면, 공동과세제도의 도입이 경상경비비율의 감소, 자본지출비의 증가, 자체사업비율의 증가를 가져왔고 이는 결과적으로 공동과세제도를 통해 재정건전성이 개선되었다고 볼 수 있다. 이러한 결과는 재산세가 감소하지 않은 자치구를 비롯하여 재산세가 감소한 자치구에서도 동일하게 나타났다. 이를 통해 알 수 있듯이 공동과세제도의 도입이 일부 자치구의 재산세를 감소시키기는 하지만, 재정건전성의 악화로까지 이어지지 않았음을 알 수 있다. 따라서 공동과세제도는 자치구의 전반적인 재정건전성을 개선하는데 일부 기여를 하고 있으며 재정보전 금이 존재할 경우에는 재산세가 감소하는 자치구에 있어서도 재정악화를 야기하지 않는 것으로 나타났다. 따라서 본 연구의 결과는 공동과세제도로 발생하는 자치구 간 갈등의 해결, 공동과세제도의 원활한 운영, 타 지역에서의 도입 논의에 있어 유용한 시사점을 제공할 수 있으리라 기대된다. This paper examines the effects that the Property Tax-Sharing System, established in 2008 by Seoul Metropolitan government, has had on administrative district's financial condition. In particular, financial condition in administrative district is measured by the following variables: (1) the ratio of operating expenses in total expenses, (2) capital expenses, (3) the ratio of own project/business expenses in total expenses, and (4) the ratio of own general revenues in total general revenues. To do that, the paper uses cross-sectional time-series data over the 6 years from 2005 to 2010 in 12 administrative districts in Seoul, and employs two research methods, i.e., ANOVA (analysis of variance) and regression analysis. According to empirical results, financial condition in administrative districts has been generally improved since the system was established in 2008. In details, it has contributed to a decrease in the ratio of operating expenses, an increase in capital expenses, and an increase in the ratio of own general revenues. But it should be careful to draw any conclusion on the system's long-term effects on financial condition in administrative districts, because it have been operating in a short period of time.