• Title/Summary/Keyword: theoretical analyses

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The Study of success factors of Korean Market for entry strategies of foreign companies (유럽기업들의 아시아시장 초기진입 전략에 관한 연구 -독일기업을 중심으로-)

  • Kim, Jin-Suk
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.10
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    • pp.4314-4321
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    • 2011
  • The aim of this paper is to analyze the success factors of European companies operating in Korea. Special attention is given to German companies seeking to enter the Asian market. The advantages and disadvantages of the Korean market as an gate to other Asian markets are discussed. Furthermore, it is introduced a measure by which other foreign companies could be induced to invest in the Korean market. Chapter two introduces a theoretical framework for market entry strategies of German companies in Asia. Chapter three and four analyses empirical cases. In chapter five a conclusion and implications is provided.

Analysis of Switching Clamped Oscillations of SiC MOSFETs

  • Ke, Junji;Zhao, Zhibin;Xie, Zongkui;Wei, Changjun;Cui, Xiang
    • Journal of Power Electronics
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    • v.18 no.3
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    • pp.892-901
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    • 2018
  • SiC MOSFETs have been used to improve system efficiency in high frequency converters due to their extremely high switching speed. However, this can result in undesirable parasitic oscillations in practical systems. In this paper, models of the key components are introduced first. Then, theoretical formulas are derived to calculate the switching oscillation frequencies after full turn-on and turn-off in clamped inductive circuits. Analysis indicates that the turn-on oscillation frequency depends on the power loop parasitic inductance and parasitic capacitances of the freewheeling diode and load inductor. On the other hand, the turn-off oscillation frequency is found to be determined by the output parasitic capacitance of the SiC MOSFET and power loop parasitic inductance. Moreover, the shifting regularity of the turn-off maximum peak voltage with a varying switching speed is investigated on the basis of time domain simulation. The distortion of the turn-on current is theoretically analyzed. Finally, experimental results verifying the above calculations and analyses are presented.

Characterization of the Salmonella typhi Outer Membrane Protein C

  • Toobak, Hoda;Rasooli, Iraj;Gargari, Seyed Latif Mousavi;Jahangiri, Abolfazl;Nadoushan, Mohammadreza Jalali;Owlia, Parviz;Astaneh, Shakiba Darvish Alipour
    • Microbiology and Biotechnology Letters
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    • v.41 no.1
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    • pp.128-134
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    • 2013
  • Salmonella enterica serovar typhi, a Gram-negative food-borne pathogen, causes typhoid fever in humans. OmpC is an outer membrane porin of S. typhi expressed throughout the infection period. OmpC is potentially an attractive antigen for multivalent vaccines and diagnostic kit designs. In this study we combined in silico, in vitro and in vivo approaches to analyze various aspects of OmpC's antigenic properties. The conserved region, in addition to secondary and tertiary structures, and linear B cell epitopes, were predicted. A number of results obtained from in silico analyses were validated by experimental studies. OmpC was amplified, cloned and then expressed, with the recombinant protein then being purified. BALB/c mice were immunized by purified denatured OmpC. The titer of antibody was raised. Results of challenges with the pathogen revealed that the immunity is non-protective. Most of the theoretical and experimental results were in consensus. Introduced linear B cell epitopes can be employed for the design of diagnostic kits based on antigen-antibody interactions.

A Study of the Security and Secretary Service's Roles (경호비서의 역할에 관한 연구)

  • Kim, Jung-Suk;Park, Aok-Cheol
    • Journal of the Society of Disaster Information
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    • v.2 no.1
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    • pp.65-80
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    • 2006
  • Security and Secretary Service is the man who maintains safe condition of boss', following him during all daily schedule and help the boss display his supreme business abilities, settling various affairs The purpose of this study is to examine the role of Security and Secretary Service. To understand the role of Security and Secretary Service, interviews with Security and Secretary Service's. synthesizing records inquire and interviews with present workers, was analyzed. As results of the study, the open coding of grounded theory was 85 categories, 22 lower categories, and 13 upper categories; 7 roles of Security and Secretary Service types out of 13 upper categories were attained. Based on this, from the axial coding a paradigm model related to categories was produced and selective coding the core category, story line development and type were analyzed. Therefore, Security and Secretary Service plays roles: Office manager, Training manager, Information manager, Customer relations manager, Facilitator, Health manager, and Safety manager. Compared with Office secretary, It is said that Health manager, and Safety manager are distinguishing roles. Through the coding process based on grounded theory. For this, based on the writer's theoretical sensitivity and constant comparative analysis, theses as well as writing in each field, data from serial publications and others, the statements of interview subjects were constantly compared and analyzed. Based on these analyses, this study suggests the following: First, the intimidate sample survey is need. Second, professional educational content during the training process of Security and Secretary Services should be strengthened. Third, to expect a more professional role of Security and Secretary Services. the systematic support will be required.

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Assessing Public Attitude for Multifunctional Roles of the U.S. Agriculture Using a Bivariate Ordered Probit Model (Bivariate Ordered Probit 모형을 이용한 미국 농업의 다원적 기능에 대한 소비자 인식분석)

  • Han, Jung-Hee;Moon, Wan-Ki;Cho, Yong-Sung
    • Korean Journal of Organic Agriculture
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    • v.17 no.4
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    • pp.413-439
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    • 2009
  • This study conducts a survey and test to understand U.S. public's perception about multifunctionality. The questionnaire suggests seven alternative way of providing questions about intangible benefits provided by agriculture in the U.S. The final questionnaire was administered as an e-mail survey in June 2008 to a nationally representative household panel maintained in the U.S. by the Ipsos Observer. Data analysis shows that 64 percent of respondents considered the multifunctionality of agriculiture as an important issue and 45 percent of respondents were in favor of increasing government expenditure to support farmland preservation. Using Fishbein's multi-attribute model as a theoretical background, this paper develops an empirical model to assess and attributes of multifunctionality. For the analysis, bivariate orderd probit model was set up to reflect respondent's attitude. Regression analyses show that two questions (how much you agree with agriculture's intangible benefit and increasing government expenditure to support agriculture) are shaped by different sets of facts.

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A Study on Modes of Expression in Fashion Illustration - Focused on Fashion Magazine - (패션 일러스트레이션의 표현양식(表現樣式)에 관(關)한 연구(硏究) - 패션잡지(雜誌)를 중심(中心)으로 -)

  • Roh, Youn-Sun
    • Journal of Fashion Business
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    • v.8 no.5
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    • pp.75-84
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    • 2004
  • Fashion Illustration has become a key method in expressing Fashion, and is being applied in various fields of the modern world, where changes are so rapid that prescribing trends are meaningless. Fashion Illustration was stimulated through progress of wood block printing and development of printing techniques, and grew with fashion magazines. Fashion Illustration advanced along with the appearance of newspapers and magazines that were emerged due to historical demands such as development of printing techniques, spacial spread of human life, obliteration of traditional societies, diffusion of education systems, progress in postal systems, and appearance of commercial broadcast. Fashion Illustration showed growth and decline along with the influence of mass media such as magazines and photography, and the general publics demand. In this study, the author reviews Le Nouvau Mercure Galant, the magazine that first dealt with Fashion Illustrations. The author analyses the magazine in six stages of formation, growth, revolution, golden-age, decline, and reconstruction, to develope a theoretical analysis of Fashion Illustration and to give direction of use of Fashion Illustration in the future.

Experimental and analytical study in determining the seismic performance of the ELBRF-E and ELBRF-B braced frames

  • Jouneghani, Habib Ghasemi;Haghollahi, Abbas
    • Steel and Composite Structures
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    • v.37 no.5
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    • pp.571-587
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    • 2020
  • In this article the seismic demand and performance of two recent braced steel frames named steel moment frames with the elliptic bracing (ELBRFs) are assessed through a laboratory program and numerical analyses of FEM. Here, one of the specimens is without connecting bracket from the corner of the frame to the elliptic brace (ELBRF-E), while the other is with the connecting brackets (ELBRF-B). In both the elliptic braced moment resisting frames (ELBRFs), in addition to not having any opening space problem in the bracing systems when installed in the surrounding frames, they improve structure's behavior. The experimental test is run on ½ scale single-story single-bay ELBRF specimens under cyclic quasi-static loading and compared with X-bracing and SMRF systems in one story base model. This system is of appropriate stiffness and a high ductility, with an increased response modification factor. Moreover, its energy dissipation is high. In the ELBRF bracing systems, there exists a great interval between relative deformation at the yield point and maximum relative deformation after entering the plastic region. In other words, the distance from the first plastic hinge to the collapse of the structure is fairly large. The experimental outcomes here, are in good agreement with the theoretical predictions.

Bending Performance Evaluation of Reinforced Aluminum Square Tube Beams (보강 알루미늄 사각관 보의 굽힘 성능평가)

  • Lee Sung-Hyuk;Choi Nak-Sam
    • Transactions of the Korean Society of Automotive Engineers
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    • v.13 no.5
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    • pp.171-180
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    • 2005
  • Bending performances of aluminum square tube beams reinforced by aluminum plates under three point bending loads have been evaluated using experimental tests combined with theoretical and finite element analyses. A finite element simulation for the three-point bending test was performed. Basic properties of aluminum materials used for initial input data of the finite element simulation were obtained from the true stress-true strain curves of specimens which had been extracted from the Al tube beams. True stresses were determined from applied loads and cross-sectional area records of a tensile specimen with a rectangular cross-section by real-time photographing, and true strains were obtained from in-situ local elongation measurements of the specimen gage portion by the multi-point scanning laser extensometer. Six kinds of aluminum tube beam specimens adhered by aluminum plates were employed fur the bending test. The bending deformation behaviors up to the maximum load described by the numerical simulation were in good agreement with experimental ones. After passing the maximum load, reinforcing plate was debonded from the aluminum tube beam. An aluminum tube beam strengthened by aluminum plate on the upper web showed an excellent bending capability.

Influencing Factors of Continuous Use Intention of Mobile IPTV Service (모바일 IPTV 서비스의 지속적인 이용의도에 대한 영향요인)

  • Kim, Hyoseok;Kim, Sanghoon
    • Journal of Information Technology Services
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    • v.16 no.4
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    • pp.99-120
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    • 2017
  • As smartphones and tablets are drastically spreading, mobile IPTV service becomes very important emerging issue in addition to existing DMB broadcasting, and the consumption of personalized multimedia services is increasing in the mobile Internet environment. While the previous research focuses on influencing factors of the initial acceptance intention of the mobile IPTV Service, this study intends to find the factors that affect continuous use intention of the mobile IPTV service which has become one of core services in the mobile environment. The research model and the hypotheses of this study could be derived on the basis of four referent theories (that is, mobile service quality model (MOBISQUAL), post acceptance model (PAM), expectation confirmation theory (ECT) and extended technology acceptance model (ETAM)). In order to empirically test the hypotheses, the field survey was conducted for 278 respondents. Twelve ones of fifteen hypotheses were found to be statistically significantly adopted from the results of structural equation model analyses using Smart PLS 3.0. The theoretical contribution of this study is to empirically investigate the factors that affect the continuous use intention of mobile IPTV service. And the practical contribution is to provide the implementation guidelines of managing the service quality to enhance the competitive power of mobile IPTV business.

The Conceptual Framework of Building Fashion Brand Equity; Focused on casual wear brand (패션브랜드자산의 형성과정에 관한 연구: 캐주얼 브랜드를 중심으로)

  • 김혜정;임숙자
    • Journal of the Korean Society of Clothing and Textiles
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    • v.28 no.2
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    • pp.252-261
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    • 2004
  • In this complex marketing world, marketers find themselves having to grapple with difficult issues about branding and their brand management. In many cases, a deeper understanding of how consumers feel, think, and act could provide valuable guidance to address these brand-management challenges. The objective of this study is to conceptualize and test the framework of building fashion brand equity, utilizing Keller's CBBE Model as a theoretical framework and Kim and Lim's (2002) scale as a measurement model of fashion brand equity. We conducted a survey toward 696 university students using Kim and Lim's fashion brand equity scale. To test the hypothesized building paths of fashion brand equity, statistical analyses were performed with AMOS 4.1 program using confirmatory factor analysis and structural equation model. The results of this study were as follows. First, fashion brand equity was defined in terms of six components; customer-brand resonance, customer feeling, customer judgment, brand imagery. brand performance and brand awareness. Fashion brand equity was multi-dimensional brand attitude, which could be measured by 16 items. Consequently, Kim and Lim's scale acquired a statistical validity. Second, the proposed conceptual framework of this study was partially significant. We can provide an effectiveness of Keller's CBBE model to conceptualize the building process of fashion brand equity. Third, it was different between two brands to build fashion brand equity.