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한국과 일본 대학생의 스트레스와 우울에 대한 분석: 부모의 사회적 지원, 어려움극복 효능감, 스트레스 관리행동의 영향
박영신,Tsuda Akira,김의철,한기혜,김의연,Horiuchi 한국문화및사회문제심리학회 2009 한국심리학회지: 문화 및 사회문제 Vol.15 No.1
This study examines factors influencing stress and depression among Korean and Japanese university students and the role that parental social support, resiliency of efficacy and stress management behavior play. Four hypotheses are presented. First, parental social support will have a direct influence on resiliency of efficacy. Second, resiliency of efficacy will have a direct influence on stress management behavior and stress and depression symptoms. Third, resiliency of efficacy will have a mediating influence between parental social support and stress and depression symptoms. Fourth, stress management behavior will have a direct influence on stress and depression symptoms. A total 469 participants, consisting of 289 Korean university students (male=156, female=133) and 180 Japanese university students (male=112, female=68) completed a questionnaire that included Rhode Island Stress Inventory-Short Version (Horiuchi, Tsuda, Tanaka, Yajima & Tsuda, in press), Stress Management Behavior (Evers et al., 2006), CES-D (Radloff, 1977), BDI-II (Beck, Steer & Brown, 1996), Resiliency of Efficacy (Bandura, 1995) and Parental Social Support (Kim & Park, 1999). The results supported the first three hypotheses for both samples. Hypothesis 4 was not supported for the Japanese sample and it was partially supported for the Korean sample. The results indicate that parental social support had a direct and positive influence on resiliency of efficacy. Second, resiliency of efficacy had a direct and positive influence on stress management behavior and stress and depression symptoms. Third, resiliency of efficacy had a mediating influence between parental social support and stress and depression symptoms. Fourth, stress management behavior did not have a direct influence on stress symptoms. Overall, parental social support had a direct positive influence on resiliency of self-efficacy, which in turn had a direct negative influence on stress and depression symptoms. 이 연구는 한국과 일본 대학생의 스트레스와 우울에 미치는 부모의 사회적 지원과 어려움극복 효능감 및 스트레스 관리행동의 영향을 분석하는데 주된 목적이 있다. 연구가설은 다음과 같다: [가설 1] 부모의 사회적 지원은 어려움극복 효능감에 직접적인 영향을 미칠 것이다. [가설 2] 어려움극복 효능감은 스트레스 관리행동과 스트레스 및 우울에 직접적인 영향을 미칠 것이다. [가설 3] 어려움극복 효능감은 부모의 사회적 지원이 스트레스와 우울에 영향을 미치는 심리적 과정에서 매개변인의 역할을 할 것이다. [가설 4] 스트레스 관리행동은 스트레스 및 우울에 직접적인 영향을 미칠 것이다. 이러한 가설에 기초하여 연구모형이 제안되었다. 분석대상은 총 469명으로, 한국 대학생 289명(남 156, 여 133)과 일본 대학생 180명(남 112, 여 68)이었다. 측정도구는 간편형 로드아일랜드 스트레스 척도(Horiuchi, Tsuda, Tanaka, Yajima & Tsuda, in press), 스트레스 관리행동 척도(Evers et al., 2006), 우울 척도(CES-D, Radloff, 1977; BDI-II, Beck, Steer & Brown, 1996), 어려움극복 효능감 척도(Bandura, 1995), 부모의 사회적 지원 척도(김의철, 박영신, 1999b)를 활용하였다. 분석결과, 가설 1, 2, 3은 한국과 일본 대학생 자료에서 모두 긍정되었다. 가설 4는 일본 대학생 자료에서는 부정되었고, 한국 대학생 자료에서는 부분적으로 부정되었다. 결과를 요약하면 다음과 같다. 첫째, 부모로부터 사회적 지원을 많이 받을수록 어려움극복 효능감이 높았다. 둘째, 어려움극복 효능감이 높을수록 스트레스 관리행동을 잘 하고, 스트레스가 낮을 뿐만 아니라, 우울 수준이 낮았다. 셋째, 어려움 극복효능감이 매개변인으로 의미 있는 작용을 하였다. 넷째, 스트레스 관리행동은 스트레스에 대해 의미 있는 영향이 없었다. 따라서 부모의 사회적 지원과 어려움극복 효능감은 스트레스와 우울에 영향을 미치는 중요한 변인으로 확인되었다.
Kato's Inequalities for Degenerate Quasilinear Elliptic Operators
Horiuchi, Toshio Department of Mathematics 2008 Kyungpook mathematical journal Vol.48 No.1
Let $N{\geq}1$ and p > 1. Let ${\Omega}$ be a domain of $\mathbb{R}^N$. In this article we shall establish Kato's inequalities for quasilinear degenerate elliptic operators of the form $A_pu$ = divA(x,$\nabla$u) for $u{\in}K_p({\Omega})$, ), where $K_p({\Omega})$ is an admissible class and $A(x,\xi)\;:\;{\Omega}{\times}\mathbb{R}^N{\rightarrow}\mathbb{R}^N$ is a mapping satisfying some structural conditions. If p = 2 for example, then we have $K_2({\Omega})\;= \;\{u\;{\in}\;L_{loc}^1({\Omega})\;:\;\partial_ju,\;\partial_{j,k}^2u\;{\in}\;L_{loc}^1({\Omega})\;for\;j,k\;=\;1,2,{\cdots},N\}$. Then we shall prove that $A_p{\mid}u{\mid}\;\geq$ (sgn u) $A_pu$ and $A_pu^+\;\geq\;(sgn^+u)^{p-1}\;A_pu$ in D'(${\Omega}$) with $u\;\in\;K_p({\Omega})$. These inequalities are called Kato's inequalities provided that p = 2. The class of operators $A_p$ contains the so-called p-harmonic operators $L_p\;=\;div(\mid{{\nabla}u{\mid}^{p-2}{\nabla}u)$ for $A(x,\xi)={\mid}\xi{\mid}^{p-2}\xi$.
Visible-light-driven photocatalytic water oxidation catalysed by iron-based metal–organic frameworks
Horiuchi, Yu,Toyao, Takashi,Miyahara, Kenta,Zakary, Lionet,Van, Dang Do,Kamata, Yusuke,Kim, Tae-Ho,Lee, Soo Wohn,Matsuoka, Masaya The Royal Society of Chemistry 2016 Chemical communications Vol.52 No.29
<P>An iron-based metal-organic framework, MIL-101(Fe), promotes photocatalytic water oxidation to produce oxygen from aqueous silver nitrate solution under visible-light irradiation. The finely dispersed iron-oxo clusters embedded as nodes of the porous framework would contribute importantly to the efficient promotion of the reaction as compared to bulk hematite (alpha-Fe2O3).</P>
Horiuchi Yusuke,Hirasawa Toshiaki,Fujisaki Junko 거트앤리버 소화기연관학회협의회 2024 Gut and Liver Vol.18 No.2
Since the indications for endoscopic submucosal dissection have been expanded to include undifferentiated-type early gastric cancers, improvements in preoperative diagnostic ability have been an area of research. There are also concerns about the impact on the diagnosis of Helicobacter pylori infection. Based on our previous studies, in undifferentiated-type early gastric cancers, magnifying endoscopy with narrow-band imaging is useful for delineating the demarcation regardless of the tumor size. Additionally, inflammatory cell infiltration appears to be a cause of misdiagnosis, suggesting that the resolution of inflammation could contribute to the accurate diagnosis of demarcations. As such, the accuracy of demarcation in eradicated and uninfected cases is higher than that in non-eradicated cases. The common features of the endoscopic findings were discoloration under white-light imaging and a predominance of sites in the lower and middle regions. The uninfected group was characterized by smaller tumor size, flat type, more extended intervening parts in magnifying endoscopy with narrow-band imaging, and pure signet ring cell carcinoma. In contrast, the eradication and non-eradication groups were characterized by larger tumor size, depressed type, and wavy microvessels in magnifying endoscopy with narrow- band imaging. In this comprehensive review, as described above, we discuss the diagnosis of demarcation of undifferentiated-type early gastric cancers, undifferentiated-type early gastric cancers that developed following H. pylori eradication, and H. pylori-uninfected undifferentiatedtype early gastric cancers, with a focus on studies with self-examination and endoscopic findings and describe the future direction.
ON j-INVARIANTS OF WEIERSTRASS EQUATIONS
Horiuchi, Ryutaro Korean Mathematical Society 2008 대한수학회지 Vol.45 No.3
A simple proof of the fact that the j-invariants for Weierstrass equations are invariant under birational transformations which keep the forms of Weierstrass equations is given by finding a non-trivial explicit birational transformation which sends a normalized Weierstrass equation to the same equation.