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외국인직접투자가 기술진보에 미치는 영향 분석: 인도네시아 상장 제조기업을 대상으로
윤별아,강성진 한국국제경제학회 2013 국제경제연구 Vol.19 No.4
본 연구는 1991~2005년 기간의 인도네시아 상장 제조기업의 패널자료를 이용하여 FDI가 기업의 생산성에 미치는 영향을 외국인투자기업의 기술이전 효과를 중심으로 실증분석 하였다. 확률적 생산변경(SPF)모형을 적용한 실증분석 결과를 보면, 외국인지분율이 기술진보율에 유의한 양(+)의 값을 나타냄으로써 외국인투자기업의 기술이전 효과를 확인할 수 있었다. 하지만 기술진보율은 자본집약적일수록 하락했는데 이는 기술이전이 노동집약적 산업을 중심으로 진행되었음을 시사한다. 이처럼 표준화된 기술의 노동집약적 산업을 중심으로 기술이전이 이루어지는 경우 선진기술의 습득과 같은 효과를 기대하기 어렵다. 따라서 FDI 유입을 통하여 숙련된 인적자원을 확보하고 고부가가치 산업의 경쟁력을 제고하기 위해서는 이에 상응하는 정부의 정책적 노력이 요구된다. This study analyzes the technological transfer effect of FDI on the Indonesia’s listed manufacturing companies from 1991 to 2005. For the purpose of the empirical analysis, we uses a stochastic production frontier model. According to the empirical analysis, the technological transfer effect of FDI is positive and significant. However the more capital-intensive is, the lower the rate of technical change is, which means that the technological transfer was accomplished at large by labor-intensive industry. When technological transfer takes place mainly in the labor-intensive industry with standardized technology, it is hard to gain a positive effect such as acquiring an advanced technology. Therefore government’s policy is required to enhance the country’s competitiveness in the high value-added industry and to train skilled human resources through the FDI.
윤별아,손상욱,천상명,김대현,차재관,이소정,박경원 대한신경과학회 2015 Journal of Clinical Neurology Vol.11 No.2
Background and Purpose Carotid artery stenting (CAS) is emerging as an alternative to carotid endarterectomy for the treatment of carotid artery stenosis (CS), but the efect of CAS onthe cognitive function of patients with severe CS has not been fully investigated. Te aim ofthis study was to use comprehensive neuropsychological tests to determine the efect of CASon cognitive function from baseline to 3 months postprocedure in patients with severe CS. Methods Tirty-one patients due to undergo CAS due to high-grade CS (≥70%) and 11control subjects who were diagnosed with CS, but who did not undergo CAS, and who visitedthe clinic or emergency room between February 2009 and February 2012 were recruited consecutively at baseline (i.e., pre-CAS). Follow-up neuropsychological evaluations afer 3 monthswere completed by 23 of the 31 patients who underwent CAS, and by 10 of the 11 control subjects. Te primary cognitive outcome was assessed using a neuropsychological test containingsubcategories designed to test general cognitive function, attention, visuospatial function, language and related functions, memory, and frontal lobe/executive function. Results Of the 23 patients undergoing CAS who completed the 3-month follow-up tests, 12had asymptomatic CS. During the 3-month follow-up period, the patients who underwent CASand those with asymptomatic CS achieved similar results to the control group on all cognitivetests. However, symptomatic CS patients (n=11) who underwent CAS exhibited improvements in visuospatial function (p=0.046) and total Seoul Neuropsychological Screening Battery-Dementia Version scores (p=0.010) in comparison with both the asymptomatic CS patients and the control group. Conclusions Te fndings of this study suggest that CAS has a positive efect on cognitivefunction in patients with symptomatic CS over a 3-month follow-up period. A long-term, multicenter, prospective case-control study would be helpful to predict quality of life and prognoses for patients undergoing CAS.
성인에서 발생한 진행하는 강직하반신불완전마비를 보인남자 환자에서 새로운 ABCD1 유전자의 돌연변이 확인
윤별아,김지선,이금봉,김재우,천상명 대한신경과학회 2018 대한신경과학회지 Vol.36 No.1
Spastic paraparesis is caused by various etiologies such as autoimmune, infection, genetic and metabolic disorder. Adrenomyeloneuropathy (AMN) is very rare but one of important causes in spastic paraparesis. We experienced a patient presenting with adult-onset progressive spastic paraparesis, who was diagnosed as AMN with hemizygous c.431C>T (p.A144V), a novel mutation in exon1. The level of very long chain fatty acid should be included in diagnostic work-up for patients presenting with adult-onset progressive spastic paraparesis.
윤별아,배종석,김종국 대한신경과학회 2019 대한신경과학회지 Vol.37 No.1
Guillain-Barré syndrome (GBS) is a representative form of post-infectious autoimmune neuropathy with heterogenous manifestations. It was originally considered as an ascending demyelinating polyneuropathy in Western countries. However, the discovery of anti-ganglioside antibodies on the basis of molecular mimicry theory could help us better understand various kinds of focal and regional variants as well as axonal type of GBS those were frequently found from Asian countries. Recent development of new techniques about anti-ganglioside complex antibodies is making more detailed descriptions for specific or unusual clinical manifestations. It has been regarded that GBS has good prognosis if treated properly as early as possible, but it still shows high mortality and morbidity rate with frequent long term neurologic and medical complications. Unfortunately, there are only two options for medical treatment, intravenous immunoglobulin and plasmapheresis, for the last 100 years. Several clinical studies on new immunotherapy targeting complement activating system with background of molecular mimicry using animal model are underway. We hope that these new treatments will be helpful for the future patients.
Electrognostic findings of Guillain-Barré syndrome
윤별아,Jong Seok Bae,김종국 대한임상신경생리학회 2020 Annals of Clinical Neurophysiology Vol.22 No.1
The electrodiagnostic findings in Guillain-Barré syndrome (GBS) play important roles in both understanding its pathophysiology and its diagnosis. Only demyelinating neuropathies were thought to be present when GBS patients were first diagnosed in Western countries, but the concept changed when many axonal GBS patients were reported in Asia. Reversible conduction failure was subsequently revealed, and it was recognized as a pathophysiologic continuum of axonal GBS. Thus, the electrodiagnostic findings in GBS have had a profound effect on the history of this disease.
윤별아,김종국,하동호 대한임상신경생리학회 2013 Annals of Clinical Neurophysiology Vol.15 No.2
Man-in-the-barrel syndrome (MIBS) is a clinical syndrome of bilateral upper limb weakness with normal lower extremity function. It can be caused by various neurological conditions such as bilateral cerebral hypoperfusion,syringomyelia, motor neuron disease, or cervical myelopathies. We report a patient with MIBS after cervical spinal cord ischemia. It is postulated to be caused by ischemic insults of anterior spinal artery from repeated and prolonged neck extension. a