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李基奭 中央醫學社 1942 中央醫學 Vol.11 No.2
In order to examine the fluctuation of flicker values, the author selected. 11 adults. Averge age of the subjects was 21 years, and five of the, subjects had, myopia. The subjects. were tested under the following three different experimental conditions; physical exercise by the ergometer bicycle for three minutes of 2.958 H. P. /min. dark adaptation and reading under bright illumination. The results of the above mentioned experiments were summerized as follows. 1. Flicker values decreased-3.5%N4.5% after exercise compared with the values obtained before exercise. 2. Flicker values did not change markedly before and after, reading under' the-bright, illumination, but in two cases, their values increased after reading. 3. Flicker values showed marked decrease after dark adaptation compared with those before the experiments. 4. Flicker values of the myopic group were. lower than those of the normal visual. group in all the experimental conditions mentioned above.
이기석 한국현대언어학회 2001 언어연구 Vol.17 No.2
This paper is an attempt to review the concept of markedness, which was introduced by the Prague school and developed by Chomsky and Halle's SPE. Despite the difference in their approaches to markedness, they still have in common the fact that a main emphasis was placed on dealing with only an articulatory view of child's developing segments. This paper shows that the shift of focus from an articulatory view to an acoustic view will he able to cover a broader area of markedness in accounting for child's phonological development. Under the assumption with an absolute concept of markedness, however, whatever approaches used so far have ended up a failure in capturing the ever-changing variety of child phonology. As a possible solution to this thorny problem, optimality theory is introduced, into which markedness is admitted in terms of violability of constraints.
이기석 한국현대영어영문학회 2002 현대영어영문학 Vol.46 No.1
This paper examines children's early word data from Winitz and Irwin (1958), Weir (1962) and Ingram (1978) in order to survey their syllable types. Following this is the analysis of children's syllable structure by observing their phonological development in such phenomena as the deletion of the coda and the addition of the onset, concluding that the markedness of syllable types increases in the order of CV, CVC, VC and V. Based on the syllable structure, this paper attempts to give an account of children's consonant harmony by referring to their strong preference for a more unmarked prosodic structure and also to the characteristics of an acoustic feature 'grave', resulting in the significant difference in the frequency of children's regressive assimilation between the coronal-to-velar and the labial-to-velar.
Classification of Galois Polynomials
이기석,이지은 호남수학회 2017 호남수학학술지 Vol.39 No.2
Galois polynomials are defined as a generalization of the Cyclotomic polynomials. Galois polynomials have integer coefficients as the cyclotomic polynomials. But they are not always irreducible. In this paper, Galois polynomials are partly classified according to the type of subgroups which defines the Galois polynomial.
이기석,임범준,이상훈,조영업,김경래,신용운,김루시아 대한외과학회 2003 Annals of Surgical Treatment and Research(ASRT) Vol.65 No.5
Primary small cell cancer of the duodenum is very rare. Only six cases have been reported previously. The patient of this case report was a twenty-year-old male who suffered from frequent nausea and vomiting being accompanied by weight loss. The poorly differentiated neuroendocrine cancer was initially diagnosed by endoscopic biopsy and the patient underwent pancreaticoduodenectomy. The diagnosis was refined as primary small-cell neuroendocrine cancer of which the histological appearance was identical to pulmonary and extrapulmonary small-cell carcinoma. The neuroendocrine differentiation was demonstrated by the positive immunoreactions for neuron-specific enolase. This case emphasizes the need to include the duodenum as a possible primary site when metastatic small cell neuroendocrine carcinoma is seen in the absence of apparent pulmonary disease. (J Korean Surg Soc 2003;65:457-460)