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장세경 漢陽大學校 人文科學大學 1997 人文論叢 Vol.27 No.-
この硏究は, 日本の上代語の母音體系に表れる特殊母音と, 我國の母音體系との關聯性を明らかにする 基礎作業の性格をおびいる. 古代日本語の特殊假名遣いには, 我國の影響を受けた痕迹が相當數表れるが, このような事實をもとに, 何ら硏究が行われたことがなかった. 古代に起こった韓日兩國語の影響授受關系を明らかにする硏究が成される爲には, 當時の日本語の特殊母音が持つ特性と分布に關する硏究が先決とならなければならない点で, この硏究は意味がある. 本硏究では, 特殊母音表記に對する音韻分析を試み, 韓國語の漢字音との比較をしで. 特殊母音の音價を推定してみた これとともに 使用例を檢討して これらの音韻的背景を推定してみた このような過程を通しで得られた成果を簡單に整理してみると次のようである. 1. 西曆入世紀ごろまで 日本には a i u e o, i e oの8個の母音があったがそれ以前には a と u 系列も2種類であったようであり 10 世紀に至りこの特殊母音は 各各 i e o に 吸收された 2. i は [i] と[u] の間音, e は [ai]のような重母音 o は [?] のような中舌母音と推定される. 3. i: i, e: e, o: o の對立は韓國語では現在まで維持されているが 日本は10世紀ごろその對立が消滅したものとみてi e o は外來的であると推測される 4. 特殊母音表記字をみまわすと 淸音と濁音の混記の例が見られるが, この事實は 古代日本語には濁音が無かったことを示す證據である 5. 使用頻度を檢討してみた結果, 特殊母音 i e o の中で, o系が最も普遍的に使われた母音であった.
Chracterizations of the Pareto distribution by record values
장세경 한국전산응용수학회 2009 Journal of applied mathematics & informatics Vol.27 No.3
In this paper, we establish some characterizations which issatisfied by the independence of the upper record values from the Paretodistribution. We prove that X ∈ PAR(1,β ),β > 0, if and only if<수식>and XU(m) , 1 ≤ m < n are independent. We show that X ∈ PAR(1,β),β> 0, if and only if<수식>and XU(n) , n ≥ 1 are indepen-dent. And we characterize that X ∈ PAR(1,β ),β > 0, if and only if<수식>and XU(n) , n ≥ 1 are independent.
On characterizations of the Weibull distribution by the upper record values
장세경,이민영,박영서 한국전산응용수학회 2008 Journal of applied mathematics & informatics Vol.26 No.1
In this paper, we establish detailed characterizations of the Weibull distribution by the independence of the upper record values. We prove that X ∈ WEI(α), if and only if XU(n)/XU(n+1)+XU(n) and XU(n+1) are independent for n ≥ 1. And we show that X ∈ WEI(α), if and only if XU(n+1)−XU(n)/XU(n+1)+XU(n) and XU(n+1) are independent for n ≥ 1.
CHARACTERIZATIONS OF THE WEIBULL DISTRIBUTION BY THE INDEPENDENCE OF THE UPPER RECORD VALUES
장세경,이민영 한국수학교육학회 2008 純粹 및 應用數學 Vol.15 No.2
This paper presents characterizations of the Weibull distribution by the independence of record values. We prove that X 2 WEI(�); if and only if XU(n+1) XU(n+1) + XU(n) and XU(n+1) for n ¸ 1 are independent or XU(n) XU(n+1) + XU(n) and XU(n+1) for n ¸ 1 are independent. And also we establish that X 2 WEI(�); if and only if XU(n+1) ¡ XU(n) XU(n+1) + XU(n) and XU(n+1) for n ¸ 1 are independent.
Characterizations of the power function distribution by the independence of the lower record values
장세경 한국전산응용수학회 2007 Journal of applied mathematics & informatics Vol.25 No.1
This paper presents characterizations of the power distribution with the parameter β = 1 by the independence of the lower record values. We prove that X ∈ POW(α,1) for α>0, if and only if XL(n) XL(m) and XL(m) for 1 ≤ m<n are independent. And we prove that X ∈ POW(α,1) for α>0, if and only if XL(m) − XL(m+1) XL(m) and XL(m) for m ≥ 1 are independent or XL(m) − XL(m+1) XL(m+1) and XL(m) for m ≥ 1 are independent.
RECURRENCE RELATIONS FOR QUOTIENT MOMENTSOF THE WEIBULL DISTRIBUTIONBY RECORD VALUES
장세경 한국전산응용수학회 2007 Journal of applied mathematics & informatics Vol.23 No.1
In this paper we establish some recurrence relations satisfied by the quotient moments of the upper record values from the Weibull distribution. Suppose X 2 WEI() then E0@ XrU (m) Xs+1 U(n) 1A = 1 (s − + 1) E0@ XrU (m) Xs−+1 U(n−1) 1A − 1 (s − + 1) E0@ XrU (m) Xs−+1 U(n) 1A and E0@ Xr+1 U(m) XsU (n)1A = 1 (r + + 1) E0@ Xr++1 U(m) XsU (n−1)1A − 1 (r + + 1)E0@ Xr++1 U(m−1) XsU (n−1)1A.
장세경,이민영 충청수학회 2006 충청수학회지 Vol.19 No.4
This paper presents characterizations based on the identical distribution and the finite moments of the exponential distribution by record values. We prove that $X \in EXP(\sigma) ,$ $ \sigma > 0,$ if and only if $X_{U(n+k)} - X_{U(n)} $ and $X_{U(n)} - X_{U(n-k)}$ for $ n >1 $ and $k \geq 1$ are identically distributed. Also, we show that $X \in EXP(\sigma) ,$ $ \sigma > 0 ,$ if and only if $E \left(X_{U(n+k)} - X_{U(n)} \right) = E \left( X_{U(n)} - X_{U(n-k)} \right)$ for $ n >1 $ and $k \geq 1.$
소화성궤양에 대한 Ranitidine (Zantac)ⓡ 의 치료효과
장세경,윤용범,김정용 대한소화기내시경학회 1983 Clinical Endoscopy Vol.3 No.1
The therapeutie efficacy of ranitidine was evaluated itn 48 in- and out- patients with endoscopically diagnosed 18 cases of gaetric ulcer and 30 casea of ducnienal ulcer. In the open study, every pabenta was treated with ranitidine 150 mg b.i.d. for 4 weeks, and waa followed up by gastroscopy after 4 weeks of the treatment. The reeults obtained were summarized as follows; 1) 15 out of 18 cases (83. 3%) of gastric ulcers and 26 out of 30 cases (86. 7%) of duodenal ulcers had been completely healed up in 4 weeks. 2) There was a significant relationship between healing of ulcer and the relief of symptoms (x =6.12, P$lt;0.005). 3) There were no significant untoward reactions, efther subjective or objective, to the administration of the drug, except one case of severe epigastic discomfort. In conclusion ranitidine appears to be fairy effective and safe for the treatment of patient with peptic ulcr diseases.
Characterizations of the Pareto distribution by the independence of record values
장세경 충청수학회 2007 충청수학회지 Vol.20 No.1
In this paper, we establish characterizations of the Pareto distribution by the independence of record values. We prove that $X \in PAR(1, \beta) $ for $\beta >0,$ if and only if $\dfrac{X_{U(n)}}{X_{U(n)} - X_{U(n+1)}} $ and $X_{U(n)}$ are independent for $ n \geq 1 .$ And we show that $X \in PAR(1, \beta)$ for $\beta >0,$ if and only if $\dfrac{X_{U(n)} - X_{U(n+1)}}{X_{U(n)} } $ and $X_{U(n)}$ are independent for $ n \geq 1 .$
Recurrence relations of the standard generalized extreme value distribution
장세경 충청수학회 2008 충청수학회지 Vol.21 No.1
In this paper, we establish some recurrence relationswhich is satised by the quotient moments of the lower record valuesfrom the standard generalized extreme value (GEV) distribution.