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생산요소가격변화가 관광서비스 산업의 마크업에 미치는 영향에 관한 실증분석
정석중,강주훈,정욱영 관광경영학회 2015 관광경영연구 Vol.65 No.-
There have been remarkable declines in input factor prices in the Korean economy since the foreign exchange crisis starting at the end of 1997. These remarkable declines in factor prices are expected to have substantial effects on the industrial markups in the tourism service industries. This paper established the markup equation based on the constant returns to scale production function including intermediate goods and estimated the industrial markups in tourism service industries over the period 1975:1-2010:4. The paper also analyzed the effects of input prices on the industrial markups in tourism service industries. The empirical results provided some evidences that price changes in factor markets have contributed to variations in industrial markup for tourism service industries.
정석중,강주훈 관광경영학회 2017 관광경영연구 Vol.79 No.-
This paper is to set up the error correction model in order to estimate the price elasticity, income elasticity and exchange rate elasticity for the long-run demand function in the tourism service industries including retail·food ·lodging and transport·communication. The price elasticity of demand are estimated to be –2.254 and –1.435 respectively in retail·food·lodging and transport·communication. The income elasticity of demand are estimated to be 0.907 and 0.606 respectively in both industries respectively. The exchange rate elasticity were also estimated to be 0.495 in retail·food·lodging and 0.534 in transport·communication. Thus the empirical result suggests that Producer Price Index, real GDP, and exchange rate have been major determinants for the long-run demand function in the tourism service industries during the period of 1975:1-2016:4. All data come from Economic Statistical System(ECOS) of the Bank of Korea and Korean Statistical Information Service (KSIS) of the bureau of Statistics.
한국형 간이 정신 상태 검사를 이용한 본태눈꺼풀연축 환자의 인지기능 평가
정석중,유혜린,Sok Joong Chung,Helen Lew 대한안과학회 2013 대한안과학회지 Vol.54 No.6
Purpose: The present study evaluated cognitive functions of Korean patients with essential blepharospasm by the Mini Mental State Examination - Korea (MMSE-K). Methods: Atotal of 33 patients diagnosedwith essential blepharospasm were evaluated. Using the K-MMSEcognitive functions such as orientation, registration and recall, attention and calculation, language, comprehension, and decision were evaluated. Results: All patients were alert and orientedwith an average K-MMSEscore of 25.2 ± 4.0 points. The normal group scores were above 24 points in 25 patients (75%), suspected dementia scores were from 20 to 23 points in 5 patients (15%), and definite dementia scores were from 15 to 19 points in 3 patients (9%). Neurologic and brain imaging evaluation was performed in the 8 patients with suspected dementia or definite dementia. Among these patients, 2 were diagnosed with Parkinson’s disease, 2 were shown to have a specific brain lesion on magnetic resonance imaging, and 1 was diagnosed with a stroke and treated with antiplatelet therapy. Conclusions: The K-MMSE can be a helpful tool for the early detection of cognitive dysfunction in outpatients with essential blepharospasm.
히알루론 산을 이용한 비수술적 눈꺼풀 위치 이상의 치료효과
정석중,신현민,유혜린.Seok Joong Chung. MD. Hyun Min Shin. MD. Helen Lew. MD 대한안과학회 2012 대한안과학회지 Vol.53 No.3
Purpose: The present study investigated the outcomes of nonsurgical treatment of abnormal eyelid position using hyaluronic acid gel. Methods: Abnormal eyelid position including 18 eyes with lid retraction, 10 eyes with lagophthalmos, and 18 eyes with ectropion were treated with hyaluronic acid gel. The mean age was 50 ± 17.8 years and the mean observation period was 11 ± 2.4 months. The photographs of patients were taken before injection, 1 month, 4 months, and at the last follow-up after injection. The marginal reflex distance 1 (MRD1) and marginal reflex distance 2 (MRD2) of patients were measured and analyzed by the Image J Program. The severity of ectropion was graded by a scoring system. Results: Ten eyes with lagopthalmos improved 1.9 ± 1.2 mm after injection. The 16 eyes with lid retraction improved 1.3 ± 0.9 mm. Twenty-three eyes with ectropion improved and 17 eyes (81%) were completely corrected. The average frequency of injection was 1.1 and the average dose of injection was 0.4 ± 0.12 cc. No significant complications were observed in any patient. Conclusions: Hyaluronic acid gel injections can be used safely and effectively as a nonsurgical treatment for patients with abnormal eyelid position without any significant complications. J Korean Ophthalmol Soc 2012;53(3):357-364
정석중 한국관광정책학회 2000 觀光政策學硏究 Vol.6 No.1
The historic summit in Pyongyang of South and North Korea's leaders makes a turning point in the relation between South and North Korea. Up to the present, South and North Korea have been at a war of attrition with mutual distrust and opposition, and it is a burden to the development of the nation. But the summit is expected to give a chance of solving the piled-up problems between South and North Korea. Also in the field of tourism, it is expected that South and North Korea interchange and cooperate with each other in earnest. The integrated development of Mt Sorak and Mt. Keumgang is being driven forward as the symbol of South and North Korea's cooperation. For the integrated development, mutual complement of each resource is the most necessary condition. It is estimated that the range of Mt. Sorak is superior in the rear markets and accomodations of tourism because surrounding cities are well formed, while Mt. Keumgang is superior in the scenery and resource of tourism. Therefore, we must proceed to develop Mt. Sorak and Mt. Keumgang efficiently through distributing functions complementarily, i.e. recreation facilities to Mt. Sorak and natural resources to Mt. Keumgang.