무극 함금석영맥광상 주변모암에서의 모암변질과 원소들의 일차분산

황인호,전효택,Hwang, In Ho,Chon, Hyo Taek 대한자원환경지질학회 1994 자원환경지질 Vol.27 No.4

Mineralogical and geochemical studies on gold-bearing quartz veins and wallrock from the Mugeug mine were carried out in order to investigate the variation of mineralogical composition and the geochemical behavior of elements with distance from the gold-bearing quartz veins. Gold-bearing quartz veins occur in early Cretaceous medium- to coarse-grained biotite granite. The unaltered wallrock is composed mainly of quartz, plagioclase, orthoclase, microcline, biotite and hornblende with accessory minerals of sphene and apatite. Mineralogical changes in altered wallrock around the gold-bearing quartz veins were observed as follows; 1) biotite and hornblende altered into chlorite, and next to sericite, 2) plagioclase, orthoclase and microcline altered into sericite, and 3) calcite and quartz introduced into wallrock. Contents of $K_2O$, Rb, Cs, Au, As and Sb in altered wallrock increase, whereas those of $Na_2O$, CaO, Ba, and Sr decrease with proximity to the gold-bearing quartz veins. The loss on ignition also increases with the increase of alteration mineral. The width of primary dispersion increases in order $Au=SiO_2<As=Cs=Rb<K_2O=Sb$ and $MnO<Na_2O=CaO=Ba<Sr$. The sericitization index, $K_2O/(K_2O+Na_2O)$, is an important indicator to interpret the degree of alteration at the Mugeug mine, which is more than 0.8 in strongly and moderately altered granite, 0.5~0.8 in wea altered granite, and less than 0.5 in unaltered granite. Alteration indices for major and trace elements, and the ratio of Rb/Sr are also useful to discriminate alteration zones.

AN ADDITIVE (U, β)-FUNCTIONAL EQUATION AND MODULE LINEAR MAPPINGS

황인호 경남대학교 기초과학연구소 2018 Nonlinear Functional Analysis and Applications Vol.23 No.3

Let A be a unital C^*-algebra. In this paper, we investigate the additive (u,β)- functional equation:f(x) + u^* f(uy) = β^{-1} f(β(x + y))for all unitary elements u in A and for a fixed nonzero complex number β. Using the fixed point method and the direct method, we prove the Hyers-Ulam stability of the additive (u,β)-functional equation in Banach modules.

스포츠산업 : 스포츠용품과 인증

황인호 한국스포츠정책과학원(구 한국스포츠개발원) 2015 스포츠과학 Vol.130 No.-

공황장애의 임상적 특성과 Brain-Derived Neurotrophic Factor 농도와의 관계

황인호,박종일,양종철,Hwang, In-Ho,Park, Jong-Il,Yang, Jong-Chul 대한불안의학회 2015 대한불안의학회지 Vol.11 No.2

Objective : Brain-derived neurotrophic factor (BDNF) is implicated in the pathophysiology of several neuropsychiatric disorders. However, there are few studies on BDNF of panic disorder. In this study, we investigated plasma BDNF levels in patients with panic disorder, and evaluated whether there are associations between clinical characteristics of panic disorder and plasma BDNF levels. Methods : We included 110 patients with panic disorder and 110 health controls in the current study. Plasma BDNF levels were measured by the enzyme-linked immunosorbent assay (ELISA). Plasma BDNF level differences were evaluated according to the clinical characteristics, such as duration of illness, recent stressful life event, agoraphobia, and insomnia. Results : The mean plasma BDNF levels of patients with panic disorder were significantly lower, as compared with those of controls (192.50 pg/mL vs. 693.75 pg/mL, t=8.838, p<0.001). The mean plasma BDNF levels of patients who had recent stressful life events were significantly higher, as compared with those who did not ($269.79{\pm}358.96pg/mL$ vs. $136.94{\pm}187.06pg/mL$, t=-2.525, p=0.013). Conclusion : These results suggested that BDNF plays a potential role in the pathophysiology of panic disorder.

자기민감 고무를 이용한 구조물의 면진성능 연구

황인호,임종혁,이종세 한국지진공학회 2006 한국지진공학회논문집 Vol.10 No.4

최근 들어 지진발생 빈도의 증가와 더불어 초고층 빌딩, 장대교량 등과 같은 대형구조물의 경량화, 유연화로 인해 발생하는 구조물의 과도한 동적거동을 효과적으로 제어할 수 있는 제진시스템의 필요성이 증가하고 있다. 본 연구에서는 지진으로부터 구조물을 보다 효과적으로 보호하기 위해 자기장에 의해 역학적 성질을 변화시킬 수 있는 제어가 가능한 지능형재료인 자기민감 고무(Magneto-Sensitive Rubber)를 이용한 반 능동 기초격리 시스템을 제안하였다. 제안된 기초격리 시스템은 기존의 LRB(Lead-Rubber Bearing) 시스템과의 비교 분석을 통해 면진성능을 평가하였으며 이를 위해 몇 가지 역사적 지진들을 이용수치해석을 수행하였다. 제안된 자기민감 고무를 이용한 반 능동 기초격린 시스템은 기존의 수동 시스템보다 기초전단력이나 상부구조물에 가속도 전달을 차단함과 동시에 기초변위를 현저하게 감소시킬 수 있음을 보였다. 그러므로 자가민감 고무를 이용한 반 능동 기초격리 시스템은 지진으로부터 구조물을 효과적으로 보호할 수 있을 것으로 사료된다. Recently, as large structures such as high-rise building and long span bridge become lighter and more flexible, the necessity of structural control for reducing excessive dynamic response due to seismic excitation is increased. In this study, a semi-active base isolation system using Magneto-Sensitive (MS) rubbers is proposed to effectively protect structures against earthquakes. MS Rubber is a class of smart controllable materials whose mechanical properties change instantly by the application of a magnetic field. To demonstrate the performance of this device, the MS Rubber isolation system is compared to Lead-Rubber Bearing (LRB) isolation systems and judged based on computed responses to several historical earthquakes. The MS Rubber isolation system is shown to achieve notable decreases in base drifts over comparable passive systems with no accompanying increase in base shears or in accelerations imparted to the superstructure. The proposed MS Rubber system is shown to perform better than the passive isolation system.

조직의 정보보안 문화 형성이 조직 구성원의 보안 지식 및 준수의도에 미치는 영향 연구

황인호,김대진,김태하,김진수 한국경영정보학회 2016 Information systems review Vol.18 No.1

학생만족의 구조적 인과관계에 관한 연구

황인호,정기한,신재익 한국고객만족경영학회 2006 고객만족경영연구 Vol.8 No.1

The purpose of this study is to verify the relative importance of individual dimension of the education service quality which the students perceive in the current environment of business high schools. Also, through the integrated and empirical analysis on the causality among educational service quality, student satisfaction, loyalty, and word of mouth, this paper tries to suggest managerial implications of providing higher educational service quality to overcome the crisis of business high schools in Korea. The findings of this study are as follows: First, this study confirmed that educational service quality in business high school context are composed of six dimensions which are tangible, reliability, consideration, empathy, contents and value. Second, the relative importance for overall educational service quality ranks with contents 0.374, tangibility 0.355, empathy 0.255, and value 0.250. Third, through the analysis on the causality among overall service quality, student satisfaction, loyalty, and word of mouth, the results show that the path coefficients between the variables of research model are significant. Overall service quality affects student satisfaction directly. And student satisfaction affects loyalty and word of mouth, and loyalty affects word of mouth directly. Therefore it is identified that educational service quality is important factor to affect student satisfaction, loyalty, and word of mouth directly and indirectly. Thus, this study could provide strategic cues to overcome the crisis of business high schools, which are necessary for student satisfaction, loyalty and good word of mouth through continuous management of educational service quality. 본 연구는 실업계고고의 당면한 위기를 극복하기위한 전략적 대안으로서 지속적인 교육서비스품질의 제고를 통한 학생만족과 애호도 및 구전으로 확장시킬 전략적 단초를 제공하고자 하였다. 연구목적을 위해 학생들이 지각하는 교육서비스품질의 개별차원의 상대적 중요도를 파악하고, 전반적 서비스품질과 학생만족, 그리고 애호도와 구전간의 구조적 인과관계를 확인하였다. 실증연구결과, 첫째, 국내 실업계 고교의 교육서비스품질차원은 유형성, 신뢰성, 배려성, 공감성, 내용성과 가치성으로 총 6개 차원으로 구성됨을 확인하였다. 둘째, 전반적 서비스품질에 대한 교육서비스품질의 구성차원들간의 상대적 중요도는 내용성, 유형성, 공감성, 가치성차원 순으로 나타났다. 셋째, 전반적 교육서비스품질이 학생만족에, 학생만족이 애호도와 구전에, 그리고 애호도가 구전에 유의한 영향을 미치는 것으로 나타났다. 따라서 교육서비스품질은 학생만족, 애호도와 구전 모든 요인에 영향을 미치는 중요한 요인임을 확인하였다. 그리고 분석결과를 바탕으로 시사점을 도출하고 미래 연구방향을 제시하였다.

옥계 함금석영맥광상 주변모암에서의 원소들의 일차분산

황인호,전효택,Hwang, In Ho,Chon, Hyo Taek 대한자원환경지질학회 1994 자원환경지질 Vol.27 No.6

Geochemical studies on gold-bearing quartz veins and wallrocks from the Okgye mine were carried out in order to investigate the primary dispersion patterns of gold and associated elements and to quantify the dispersion width of elements with distance from the gold-bearing quartz veins. Gold-bearing quartz veins occur in basaltic trachyandesite of unknown age. Enrichment of $k_2O$, MnO, Au, As, Rb, Sb, Pb, Zn, Cu, Ag and Cd, and depletion of $Na_2O$ and Sr are found in altered wallrocks. The ratio of $k_2O(k_2O+Na_2O)$, alteration index for trace elements, and Rb/Sr in altered wallrocks are increased, whereas Sr/CaO ratio is decreased with approach to the gold-bearing quartz veins. The widths of primary dispersion range from 17 cm to 155 cm. The relative dispersion width increases in order Au=Cu=Zn=Ag=Cd<MnO=Pb<As=Sb< $k_2O$=Rb and Ba< $Na_2O$ <Sr. The best fitting model of dispersion patterns in altered wallrocks around the gold-bearing quartz veins is an exponential function for $Na_2O$, As, Sb, Sr, Pb, Au, Cu, Zn, Ag and Cd, and a quadratic function for $k_2O$, MnO, Rb and Ba.

기업콘텐츠관리시스템의 지속적 이용의도 향상에 대한 연구: 기술수용모델을 중심으로

황인호,Hwang, In-Ho 한국융합학회 2021 한국융합학회논문지 Vol.12 No.8

체계적인 정보 보호 및 관리가 조직의 핵심 가치로 인식되면서, 조직들은 개인 중심의 정보 관리 방식에서 조직 중심의 정보 관리 방식으로의 전환을 추진하고 있다. 기업콘텐츠관리시스템은 내부자의 문서 보안과 정보 공유를 지원하는 시스템으로서, 최근 기술의 발전으로 많은 조직이 도입하고 있다. 본 연구는 사용자 관점에서 기업콘텐츠관리시스템의 지속적 활용을 통한 성과 향상의 방안을 제시하는 것을 목적으로 하며, 기술수용모델의 확장을 통해 지속적 이용의도 향상 방안을 제시한다. 연구는 기업콘텐츠관리시스템을 도입한 기업의 근로자들을 대상으로 설문하였으며, 구조방정식 모델링을 통해 선행연구로부터 도출한 연구가설을 검증하였다. 분석 결과, 기업콘텐츠관리시스템의 지속적 이용의도에 유용성과 이용 용이성이 영향을 미쳤으며, 지식공유 문화 환경과 기업콘텐츠관리시스템 품질 요인 기술수용모델 선행요인에 영향을 미쳤다. 본 연구의 결과는 사용자 관점에서 기업콘텐츠관리시스템 활용성 증대방안을 제시하였다는 측면에서 학술적, 실무적 시사점을 가진다. As systematic information protection and management is recognized as an organization's core value, organizations are pursuing a shift from an individual-centered information management method to an organization-oriented information management method. The Enterprise content management system(ECMS) is a solution that supports document security and information sharing by insiders and is being introduced by many organizations due to recent technological developments. The purpose of this study is to present a method of improving performance through continuous use of the ECMS from the user's point of view and also suggest a method to improve the intention of continuous use through the expansion of the technology acceptance model. This study surveyed the employees of organizations that adopted the ECMS and verified the research hypothesis derived from previous studies through structural equation modeling. As a result of the analysis, usefulness, and ease of use affected on the intention of continuous use of the ECMS, and the knowledge sharing culture and the ECMS quality factors affected the technology acceptance model factors. The results of this study have academic and practical significance in terms of suggesting a plan to increase the usability of the ECMS from the user's point of view.

조직구성원의 정보보안 준수 및 미준수 원인에 대한 연구

황인호,허성호,Hwang, In-Ho,Hu, Sung-Ho 한국융합학회 2020 한국융합학회논문지 Vol.11 No.9

본 연구의 목적은 정보보안 준수의도에 영향을 주는 긍정적, 부정적 측면의 환경적 요인을 제시하고, 개인의 보안 준수의도와의 영향관계를 찾는 것이다. 연구대상은 정보보안 정책 및 기술을 적용하는 조직의 구성원들이며, 설문 조사를 통하여 유효표본을 확보하였다. 분석과정에서 구조방정식모델링을 통해 연구모델에 대한 검증을 하였다. 측정변수는 정보보안 정책, 정보보안 시스템, 정보보안 기술적 지원, 업무장애, 비가시성, 조직몰입, 준수의도로 구성하여 분석에 활용하였다. 결과는 보안 준수요인인 정책, 시스템, 기술적 지원과 미준수 요인인 업무 장애가 각각 조직몰입에 영향을 주었으며, 준수의도로 이어지는 것을 확인하였다. 연구 모델의 검증 결과를 토대로 조직의 정보보안 준수 수준 향상을 위한 구성원들의 보안 준수 전략 수립의 방향성을 제시하였다. The purpose of this study is to present the environmental factors of positive and negative aspects that affect the information security compliance intention, and reveals the relationship of the individual's the security compliance intention. The subjects of this study are employees of organizations that apply information security policies and technologies, and effective samples were obtained through surveys. In the process of analysis, the study model was verified through structural equation modeling. The measurement variables consisted of security policy, security system, technical support, work impediment, security non-visibility, compliance intention and organizational commitment and used for analysis. The results confirmed that security compliance factors such as policy, system, technical support, and non-compliance factors, work impediment, respectively, had an impact on organizational commitment, leading to compliance intention. The verification result of the research model suggests the direction of establishing a security compliance strategy for employees to improve the level of information security compliance of the organization.