정책수단별 기업 성과 비교 연구 :R&D 효율성을 중심으로

윤상필,우청원,고혜수 한국회계정책학회 2021 회계와 정책연구 Vol.26 No.2

[Purpose] The government supports various policy instruments measures to strengthen and innovate the capabilities of enterprises. This study aims to empirically classify R&D policy instruments and analyze the impact of policy instruments on corporate performance. This will provide policy implications for R&D support. [Methodology] For companies that responded to the ‘2018 Korean Innovation Survey: Manufacturing Sector’, groups were classified by R&D policy instruments through factor analysis and cluster analysis. R&D efficiency scores were calculated through three-stage DEA. Finally, we analyzed the differences between groups using non-parametric tests. [Findings] Auxiliary support groups and protection support groups were not significant differences in R&D efficiency, but for financial support groups, R&D efficiency scores were lower than the two support groups by 1% and 5% significantly. [Policy Implications] This study presented implications for classifying policy instruments through factor analysis and cluster analysis using survey data. In addition, by revealing the differences in the performance of the enterprise by policy instruments, policy makers were provided with policy implications about the design and implementation of policy instruments for efficient tax utilization. [연구목적] 기업의 역량 강화 및 혁신을 위해 정부는 다양한 정책수단을 지원한다. 이에 본연구에서는 R&D 지원 정책수단을 실증적으로 분류하고, 정책수단이 기업 성과에 미치는 영향을 분석하고자 한다. 이를 통해 R&D 지원에 대한 정책적 시사점을 제시할 것이다. [연구방법] ‘2018년 힌국기업혁신조사:제조업 부문’ 설문 조사에 응답한 기업을 대상으로, 요인분석과 군집분석을 통해 R&D 지원 정책수단별로 집단을 분류하고, 3단계 DEA를 통해환경요인이 고려된 R&D 효율성 점수를 산출하였다. 순 R&D 효율성 점수와 비모수 검정을활용하여 집단 간 차이를 분석하였다. [연구결과] 요인분석과 군집분석 결과, 지원수단은 보조지원, 보호지원, 재무적 지원으로 차원이 축소되었다. 비모수 검정 결과, 보조지원, 보호지원, 재무적 지원 집단 순으로 R&D 효율성점수가 높았다. 또한, 보조지원과 보호지원 집단 간 차이는 유의하지 않았으나, 재무적 지원 집단의 경우 두 지원 집단보다 각각 유의수준 1%, 5% 이내로 낮은 R&D 효율성 점수를 보였다. [정책적 시사점] 본 연구는 설문데이터를 활용하여 요인분석 및 군집분석을 통해 정책수단을분류함으로써 정책수단 분류에 대한 시사점을 제시하였다. 또한, 정책수단별로 기업의 성과 차이를 밝힘으로써 정책 결정자에게 효율적인 조세 활용을 위한 정책수단 설계 및 수행에 대한정책적 시사점을 제공하였다.

Estimation of the Radiation Field Distribution Induced by Beam Loss at the 100-MeV Proton Linear Accelerator

윤상필 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.7

The Proton Engineering Frontier Project has been constructing a 100-MeV Proton Linear acceleratorfor completion in 2013 and the accelerator design has been carried out with the objectiveof limiting beam losses to less than 1 W/m during normal operation. If accidental beam loss is tobe prevented a beam loss monitor has to be installed along to the linear accelerator. Thus, to determinethe dynamic ranges and the installation intervals of the beam loss monitors, we calculatedthe radiation field distribution by using the Monte Carlo Method not only during continuous beamloss for normal operation but also dose during accidental beam loss. The calculation results showthat the intensity of neutron dose was higher than that of the gamma. The lateral distribution ofneutrons was wider than that of photons.

Dosimetry of a Low-energy Proton Beam Using a Plane-parallel Ionization Chamber in the 45-MeV Proton Beam Test Irradiation Facility

윤상필,홍인석,박범식,조용섭 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.22

For the measurement of the absorbed dose in the 45-MeV proton beam test irradiation facility, and air filled ionization chamber technique recommended by the IAEA international code of practice TRS 398 for clinical dosimetry was tested for a radiobiological effect experiment using a proton beam. This work aimed to obtain a calibration factor suitable for our irradiation facility. Applying the TRS 398 protocol, we introduced at this facility the concept of the absorbed dose to water. A parallel-plane Markus ionization chamber and a water phantom were used for proton beam dosimetry. To determine the reference absorbed dose to water for the proton beam, we obtained the beam quality index R_(res) and the beam quality correction factor k_p measuring the depth-to-dose distribution of the proton beam in water. Measurements were made in modulated and unmodulated beams. For the modulated beam, the beam correction factor k_p was 1.00472, and for the unmodulated beam, the beam correction factor k_p was 1.004.

Evaluation of Radiation Damage Induced by a Proton Beam at the KOMAC Facility

윤상필 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.66 No.3

The 100-MeV proton linacs of the Korea Multi-purpose Accelerator Complex (KOMAC) startedmachine operation in 2013, and a 20-MeV or a 100-MeV proton beam has been provided to userswho want to utilize a proton beam for their research and development at the KOMAC. Under protonbeam irradiation, the target material will experience radiation damage induced by the proton beam,and this radiation damage can be evaluated as a function of the displacement per atom (DPA). Therefore, we used the SRIM (stopping and range of ions in matter) to investigate the damagerate induced by a 20-MeV or a 100-MeV proton beam. In this paper, we will introduce the resultsobtained by using SRIM calculation, for the radiation damage as a function of the proton energy,beam current, target material and target dimension.

재발성 전두동염 환자에서 수술항해기구를 이용한 Modified Lothrop 수술 사례 1예

윤상필,백삼현,이경규,김학수 대한이비인후과학회 부산,울산,경남 지부회 2011 임상이비인후과 Vol.22 No.2

In recurrent chronic frontal sinusitis, the representative Modified Lothrop procedure is less invasive compared to classic extranasal approach, but CSF leakage and orbital injury occur often, and it has technical difficulties. On the other hand, a navigation device was recently adopted for endoscopic sinus surgery in otorhinolaryngology department. Endoscopic sinus surgery using the Navigation device can reduce intraoperative complications and recurrence. Researchers of this study report on the case of recent Modified Lothrop procedure in patient with recurrent frontal sinusitis by use of navigation, along with references.

시·도 교육청 지방교육재정 운영효율성 분석 : 평생교육 사업을 중심으로

윤상필,손호성 (사)한국정부회계학회 2023 정부회계연구 Vol.21 No.1

The purpose of this study is to analyze changes in the efficiency of lifelong education projects of the offices of education. To this end, the efficiency of the lifelong education project was divided into financial efficiency and operational efficiency, and outputs and inputs were defined. In addition, data envelopment analysis (DEA) and Malmquist Index were used to examine the changes in efficiency and compare the patterns of efficiency changes between city and provincial offices of education. The results of the study are as follows. First, both financial efficiency and operational efficiency of lifelong education projects increased in 2020 compared to 2013, but recently showed a decreasing trend. Second, most of the factors for the increase in efficiency were due to changes in the external environment, and the increase in internal capabilities was found to be insignificant. Third, as a result of comparing city offices of education with provincial offices of education, it was found that provincial offices of education had a large increase in efficiency due to the external environment, and their internal capabilities changed slightly compared to those of city offices of education. This suggests that a positive external environment should be created for the lifelong education project through policies, and internal capabilities should be strengthened through diverse and differentiated lifelong education programs reflecting the characteristics of the Office of Education. 본 연구의 목적은 시·도 교육청의 평생교육 사업 효율성 변화를 분석하는 것이다. 이를 위해 평생교육 사업의 효율성을 재정효율성과 운영효율성으로 구분하여 산출물과 투입물을 정의하였다. 또한, 자료포락분석(DEA)과 Malmquist Index를 활용하여 각 효율성의 변화를 살펴보고 시 교육청과 도 교육청 간의 효율성 변화 양상을 비교하였다. 연구 결과는 다음과 같다. 첫째, 평생교육 사업의 재정효율성과 운영효율성 모두 2013년 대비 2020년 증가한 수치를 보였지만 최근 감소하는 추세를 보였다. 둘째, 효율성 증가의 요인이 대부분 외부 환경 변화에 따른 것으로 내부 역량의 증가는 미미한 것으로 나타났다. 셋째, 시 교육청과 도 교육청을 비교한 결과 도 교육청이 외부 환경에 의한 효율성 증가가 크고 내부 역량은 시 교육청에 비해 미미하게 변화한 것을 보였다. 이는 정책을 통해 평생교육 사업에 긍정적인 외부 환경을 조성하고, 교육청 특성을 반영하여 다양하고 차별화된 평생교육 프로그램을 통해 내부 효율성을 강화해야 함을 시사한다.

Investigation of the Radionuclide Inventory and the Production Yields of the Target Stacks at the PEFP Radioisotope Production Facility

윤상필,홍인석,조용섭 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.56 No.61

The Proton Engineering Frontier Project (PEFP) will construct a radioisotope production facility by using the nuclear reaction between the 100-MeV proton beam and the solid target. For investigating the radionuclide inventory and the production yield of the radioisotope production facility,we have optimized the thickness of the prototype target stacks by using a SRIM calculation. The target stacks consist of RbCl encapsulated in inconel alloy, Zn metal, and Ga metal encapsulated in niobium. Typical beam parameters were 300 µA and 95 hours. An inventory of all generated radionuclide activities is mandatory in order to prepare the operation scenario and design the hot cell. The Monte Carlo code MCNPX was used to investigate what radionuclide is generated. The obtained radionuclide inventory indicated that about 100 radionuclides were generated and that the total radioactivity of the irradiated target stacks was 1324.1 Ci at the end of the bombardment. The production yields of Sr-82, Cu-67, and Ge-68 were 3.79 Ci, 2.74 Ci, and 1.23 Ci at the end of the bombardment.

Acute Stroke in the Elderly Male -Clinical Features,Stroke Subtypes, and Sasang Constitutions-

윤상필,정우상,문상관,조기호,김영석,배형섭 대한한의학회 2007 대한한의학회지 Vol.28 No.2

Objectives : This study investigated stroke types, ischemic stroke subtypes, risk factors for stroke, stroke complications and Sasang constitutions in two groups divided by age according to the weakness of shingi (shenqi): younger (40 to 63 years) and older (= 64 years). Methods : 165 male patients with acute stroke within 14 days onset were included, who were admitted to Kyunghee Oriental Medical Center from October 2005 to May 2007. Stroke types, ischemic stroke subtypes, risk factors for stroke, stroke complications and Sasang constitutions in two age groups were examined. Results : Mean ages were 53.01±6.16 and 70.95±6.37 years for the younger 77 patients and older 88 subjects, respectively. There were no significant differences in stroke type, ischemic stroke subtypes, stroke complications and Sasang constitutions. Current smoking was more frequent in the younger age group (P= 0.005). Conclusion : Age does not seem to influence stroke types, ischemic stroke subtypes, stroke risk factors (except current smoking), stroke complications or Sasang constitutions.

Seasonal Variation of Acute Stroke- Hospital Based Study -

윤상필,정우상,문상관,조기호,김영석,배형섭 대한한의학회 2008 대한한의학회지 Vol.29 No.2

Objectives: This study aimed to investigate the seasonal variation in stroke types, ischemic stroke subtypes, stroke risk factors and Sasang constitutions. Methods: 226 patients with acute stroke within 14 days onset were included, who were admitted to Kyunghee Oriental Medical Center from November 2005 to October 2006. The year was subdivided into four parts: spring (March-May); summer (June-August); fall (September-November); and winter (December-February). Stroke types, ischemic stroke subtypes, stroke risk factors and Sasang constitutions in the four groups were examined. Results: Ischemic stroke was most frequent in summer, whereas hemorrhagic stroke was most frequent in winter. There was no significant difference in seasonal variation of stroke. The frequency of ischemic heart disease among stroke risk factors was significantly high in spring (p=0.031). The frequency of hypertension, diabetes mellitus, atrial fibrillation, and hyperlipidemia did not differ among seasons. There was no significant difference in Sasang constitution among seasons. Frequency of small vessel occlusion was highest in summer. Large artery atherosclerosis was frequent in spring and summer,but seasonal variation of ischemic stroke subtypes did not show statistical difference. Conclusion: Acute stroke demonstrates seasonal characteristics according to stroke types, ischemic stroke subtypes, risk factors for stroke, and Sasang constitutions. These results have important clinical implications in stroke prevention. Objectives: This study aimed to investigate the seasonal variation in stroke types, ischemic stroke subtypes, stroke risk factors and Sasang constitutions. Methods: 226 patients with acute stroke within 14 days onset were included, who were admitted to Kyunghee Oriental Medical Center from November 2005 to October 2006. The year was subdivided into four parts: spring (March-May); summer (June-August); fall (September-November); and winter (December-February). Stroke types, ischemic stroke subtypes, stroke risk factors and Sasang constitutions in the four groups were examined. Results: Ischemic stroke was most frequent in summer, whereas hemorrhagic stroke was most frequent in winter. There was no significant difference in seasonal variation of stroke. The frequency of ischemic heart disease among stroke risk factors was significantly high in spring (p=0.031). The frequency of hypertension, diabetes mellitus, atrial fibrillation, and hyperlipidemia did not differ among seasons. There was no significant difference in Sasang constitution among seasons. Frequency of small vessel occlusion was highest in summer. Large artery atherosclerosis was frequent in spring and summer,but seasonal variation of ischemic stroke subtypes did not show statistical difference. Conclusion: Acute stroke demonstrates seasonal characteristics according to stroke types, ischemic stroke subtypes, risk factors for stroke, and Sasang constitutions. These results have important clinical implications in stroke prevention.

플라즈마 공정 기술을 이용한 금속 표면의 고착성 오염물질 제염 연구

윤상필,전상환,전동식,김용수,정종헌,김계남,오원진 한국방사성폐기물학회 2006 한국방사성폐기물학회 학술논문요약집 Vol.4 No.1