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연구논문 : 항공사의 가격공정성과 구매의도에 관한 연구
박시범 ( Si Buem Park ),양성윤 ( Sung Youn Yang ),김기범 ( Ki Bum Kim ) 한국컨벤션학회 2014 MICE관광연구 Vol.14 No.2
This study deducted the sub-factors of price fairness and verified the structural relationship that exist between the factors empirically in order to analyze the influencing relationship between airline price fairness, perceived value, perceived price and purchasing intention. The results of the empirical analysis are summarized as follows. First, those sub-factors of airline price fairness such as situation fairness and price fairness itself had a significant impact on the perceived price. Second, situation fairness, a sub-factor of airline price fairness, had a significant impact on perceived value; however, price fairness itself did not have a significant impact on perceived value. Third, perceived price had a significant impact on perceived value and purchasing intention. Lastly, perceived value did not have a significant impact on purchasing intention. The airlines have established a variety of operational strategies to enhance their competitiveness as the range of choice for airline has expanded in recent years. Of those operational strategies, pricing strategies are playing an important role. Thus, this study is useful in terms of verifying the impacts of various aspects of airline price on purchasing behavior and helping improve the profit management of airlines based thereon in the future.
TiFe 공정합금의 미소합금 첨가에 따른 미세구조 변화 및 기계적 물성
이찬호,조재혁,문상철,김정태,여은진,김기범,Lee, Chan Ho,Jo, Jae Hyuk,Mun, Sang Chul,Kim, Jung Tae,Yeo, Eun Jin,Kim, Ki Buem 한국재료학회 2012 한국재료학회지 Vol.22 No.11
Recently, ultrafine grained (ufg, typically 100 > d > 500 nm) Ti-Fe eutectic materials have been highlighted due to their extraordinarily high strength and good abrasion resistance compared to conventional coarse grained (cg, d > $1{\mu}m$) materials. However, these materials exhibit limited plastic strain and toughness during room temperature deformation due to highly localized shear strain. Several approaches have been extensively studied to overcome such drawbacks, such as the addition of minor elements (Sn, Nb, Co, etc.). In this paper, we have investigated the influence of the addition of Gd and Y contents (0.3-1.0 at.%) into the binary Ti-Fe eutectic alloy. Gd and Y are chosen due to their immiscibility with Ti. Microstructural investigation reveals that the Gd phase forms in the eutectic matrix and the Gd phase size increases with increasing Gd content. The improvement of the mechanical properties is possibly correlated to the precipitation hardening. On the other hand, in the case of Ti-Fe-Y alloys, with increasing Y contents, primary phases form and lamellar spacing increases compared to the case of the eutectic alloy. Investigation of the mechanical properties reveals that the plasticity of the Ti-Fe-Y alloys is gradually improved, without a reduction of strength. These results suggest that the enhancement of the mechanical properties is closely related to the formation of the primary phase.
수열합성 공정을 이용한 금속 다공체의 나노 산화물 형성
박혜진,김영석,홍성환,김정태,조재영,이원희,김기범,Park, H.J.,Kim, Y.S.,Hong, S.H.,Kim, J.T.,Cho, J.Y.,Lee, W.H.,Kim, Ki Buem 한국분말야금학회 2015 한국분말재료학회지 (KPMI) Vol.22 No.4
Porous metallic glass compact (PMGC) are developed by electro-discharge sintering (EDS) process of gas atomized $Zr_{41.2}Ti_{13.8}Cu_{12.5}Ni_{10}Be_{22.5}$ metallic glass powder under of 0.2 kJ generated by a $450{\mu}F$ capacitor being charged to 0.94 kV. Functional iron-oxides are formed and growth on the surface of PMGCs via hydrothermal synthesis. It is carried out at $150^{\circ}C$ for 48hr with distilled water of 100 mL containing Fe ions of 0.18 g/L. Consequently, two types of iron oxides with different morphology which are disc-shaped $Fe_2O_3$ and needle-shaped $Fe_3O_4$ are successfully formed on the surface of the PMGCs. This finding suggests that PMGC witih hydrothermal technique can be attractive for the practical technology as a new area of structural and functional materials. And they provide a promising road map for using the metallic glasses as a potential functional application.
저융점 원소의 첨가에 따른 Ti<sub>65</sub>Fe<sub>35</sub> 과공정 합금의 미세구조와 기계적 특성의 변화
황윤중,홍성환,김정태,김영석,박혜진,김희진,정연범,이영훈,김기범,Hwang, Yun Jung,Hong, Sung Hwan,Kim, Jeong Tae,Kim, Young Seok,Park, Hae Jin,Kim, Hee Jin,Jeong, Yeon Beom,Lee, Young Hoon,Kim, Ki Buem 한국재료학회 2017 한국재료학회지 Vol.27 No.10
The microstructural evolution and modulation of mechanical properties were investigated for a $Ti_{65}Fe_{35}$ hypereutectic alloy by addition of $Bi_{53}In_{47}$ eutectic alloys. The microstructure of these alloys changed with the additional BiIn elements from a typical dendrite-eutectic composite to a bimodal eutectic structure with primary dendrite phases. In particular, the primary dendrite phase changed from a TiFe intermetallic compound into a ${\beta}$-Ti solid solution despite their higher Fe content. Compressive tests at room temperature demonstrated that the yield strength slightly decreased but the plasticity evidently increased with an increasing Bi-In content, which led to the formation of a bimodal eutectic structure (${\beta}$-Ti/TiFe + ${\beta}$-Ti/BiIn containing phase). Furthermore, the (Ti65Fe35)95(Bi53In47)5 alloy exhibited optimized mechanical properties with high strength (1319MPa) and reasonable plasticity (14.2 %). The results of this study indicate that the transition of the eutectic structure, the type of primary phases and the supersaturation in the ${\beta}$-Ti phase are crucial factors for controlling the mechanical properties of the ultrafine dendrite-eutectic composites.
金箕範 연세대학교 대학원 1975 延世論叢 Vol.12 No.1
Die heutige Verfassungsrechtslehre hat neue Aufgaben, die mit dem zu gewinnenden Begriff gelo¨st werden sollen. Diese Abhandlung erfasst die Aufgaben und bietet deren Lo¨sungsrichtungen. Mit anderen Worten bietet die vorliegende Abhandlung die Mo¨glichkeit, die folgenden Verfassung-srechtlichen Probleme zu erfassen and sachma¨ßig zu bewa¨ltigen. Einerseits aus dem Gebiet des Grundrechtskatalogs (sop. Bill of Rights), der individuelle Grundrechte garantiert, sind die Frage einer "Drittwirkung" der Grundrechte, die Entstehung der neuartigen Grundrechtsbegriffe, die Frage nach der Harmonie der Grundrechtsgarantie and der Stastsinteressen and damit dem Rechtsschutz gestellt, andererseits in Regierungsaufbau sind der Wandel des Gewalten teilungsprinzips and also zur Maßnehmung dieses Wandels die Richtung, in die die Verfassung-srechtslehre der Gegenwart zielen muss, behandelt.
金箕範 연세대학교 대학원 1972 延世論叢 Vol.9 No.1
This paper explains and analyses the emergency power provided in the Constitution of the Republic of Korea; its conditions of exercises, effects and practical workings. Emphasis is given to analysis and explanation of the presidential power of the Emergency Decree and the Financial and Economic Emergency Measures as well as the Martial Law provided in the Constitution