• Title/Summary/Keyword: disadvantages

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Prisma Statement: The Strategic Advantages and Disadvantages of Foreign Direct Investments (FDI)

  • Phouthakannha NANTHARATH
    • The Journal of Industrial Distribution & Business
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    • v.14 no.10
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    • pp.1-9
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    • 2023
  • Purpose: In an increasingly globalized world, foreign direct investment (FDI) plays an essential role in the economic improvement of countries. This study aims to delve into the topic of overseas direct investment (FDI) and offer a complete analysis of its strategic advantages and disadvantages. By thoroughly examining the present literature, this study aims to discover and explore the diverse advantages and drawbacks. Research design, data and methodology: The information analysis system systematically and rigorously examined the selected studies. The evaluation will follow a thematic technique in which conventional subject matters and styles associated with FDI's strategic benefits and downsides can be recognized and synthesized. Data extraction contained relevant facts from the chosen research, along with the study objectives. Results: This study provides the findings of the, which explores the strategic advantages and disadvantages of foreign direct investments (FDI) primarily based on the evaluation of previous research. A comprehensive review of the identified benefits and drawbacks highlights their implications for businesses engaged in FDI. Conclusions: In sum, the findings offer valuable insights for practitioners, guiding their decision-making methods in the international commercial enterprise landscape. Organizations can function for fulfillment and sustainable development in the global marketplace by leveraging the advantages and effectively managing demanding situations.

A Study of Ordering Sphere Decoder Class for Space-Time Codes

  • Pham, Van-Su;Mai, Linh;Kabir, S.M. Humayun;Yoon, Gi-Wan
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2008.05a
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    • pp.567-571
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    • 2008
  • In this paper, an overview on the ordering sphere decoder (SD) class for space-time codes (STC) will be presented. In SDs, the ordering techniques are considered as promising methods for reducing complexity by exploiting a sorted list of candidates, thus decreasing the number of tested points. First, we will present the current state of art of SD with their advantages and disadvantages. Then, the overview of simply geometrical approaches for ordering is presented to address the question to overcome the disadvantages. The computer simulation results shown that, thanks to the aid of ordering, the ordering SDs can achieve optimal bit-error-rate (BER) performance while requiring the very low complexity, which is comparable to that of linear sub-optimal decoders.

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The Enhanced Physico-Chemical and Electrochemical Properties for Surface Modified NiO Cathode for Molten Carbonate Fuel Cells (MCFCs)

  • Choi, Hee Seon;Kim, Keon;Yi, Cheol-Woo
    • Bulletin of the Korean Chemical Society
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    • v.35 no.5
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    • pp.1305-1311
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    • 2014
  • The nickel oxide, the most widely used cathode material for the molten carbonate fuel cell (MCFC), has several disadvantages including NiO dissolution, poor mechanical strength, and corrosion phenomena during MCFC operation. The surface modification of NiO with lanthanum maintains the advantages, such as performance and stability, and suppresses the disadvantages of NiO cathode because the modification results in the formation of $LaNiO_3$ phase which has high conductivity, stability, and catalytic activity. As a result, La-modified NiO cathode shows low NiO dissolution, high degree of lithiation, and mechanical strength, and high cell performance and catalytic activity in comparison with the pristine NiO. These enhanced physico-chemical and electrochemical properties and the durability in marine environment allow MCFC to marine application as a auxiliary propulsion system.

Structural Seperation of Unsymmetric Highrise Apartments (비정형 고층아파트에서의 구조체 분리 간격)

  • 정하선;현창국;윤영호
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1989.04a
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    • pp.56-60
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    • 1989
  • It is well known that the symmetric buildings have higher resistance than the unaymetric ones do under seismic load. However, it is sometimes inevitable to build an unsymmetric structure due to the site conditions or architectural needs. The unsymmetric building has structural disadvantages under seismic load. In such a case the structural seperation joints are often used to avoid those disadvantages. This paper presents a method to determine the width of the seperation joints for unsymmetric, reinforced concrete apartments structured by walls and slabs only. The variables of the study were the ratio of shear-wall stiffness to the building length in the same directron, the building height and the story mass.

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A Study on Privacy Issues and Solutions of Public Data in Education

  • Jun, Woochun
    • International Journal of Internet, Broadcasting and Communication
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    • v.12 no.1
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    • pp.137-143
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    • 2020
  • With the development of information and communication technology, various data have appeared and are being distributed. The use of various data has contributed to the enrichment and convenience of our lives. Data in the public areas is also growing in volume and being actively used. Public data in the field of education are also used in various ways. As the distribution and use of public data has increased, advantages and disadvantages have started to emerge. Among the various disadvantages, the privacy problem is a representative one. In this study, we deal with the privacy issues of public data in education. First, we introduce the privacy issues of public data in the education field and suggest various solutions. The various solutions include the expansion of privacy education opportunities, the need for a new privacy protection model, the provision of a training opportunity for privacy protection for teachers and administrators, and the development of a real-time privacy infringement diagnosis tool.

Post and core build-ups in crown and bridge abutments: Bio-mechanical advantages and disadvantages

  • Mamoun, John
    • The Journal of Advanced Prosthodontics
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    • v.9 no.3
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    • pp.232-237
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    • 2017
  • Dentists often place post and core buildups on endodontically treated abutments for crown and bridge restorations. This article analyzes the bio-mechanical purposes, advantages and disadvantages of placing a core or a post and core in an endodontically treated tooth and reviews literature on post and core biomechanics. The author assesses the scientific rationale of the claim that the main purpose of a post is to retain a core, or the claim that posts weaken teeth. More likely, the main function of a post is to help prevent the abutment, on which a crown is cemented, from fracturing such that the abutment separates from the tooth root, at a fracture plane that is located approximately and theoretically at the level of the crown (or ferrule) margin. A post essentially improves the ferrule effect that is provided by the partial fixed denture prosthesis. This paper also explores the difference between bio-mechanical failures of crowns caused by lack of retention or excess taper, versus failures due to a sub-optimal ferrule effect in crown and bridge prostheses.

Operating Characteristics in LCLC Resonant Converter with A Low Coupling Transformer. (낮은 커플링 변압기를 갖는 LCLC 공진컨버터 동작특성)

  • Kong Young-Su;Kim Eun-Soo;Lee Hyun-Kwan;Cho Jung-Goo;Kim Yoon-Ho
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.54 no.7
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    • pp.343-350
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    • 2005
  • Conventionally, for transferring the primary power to the secondary one, the high frequency series resonant converter has been widely used for the contactless power supply system. However, the high frequency series resonant converter has the disadvantages such as the low efficiency, the high voltage gain characteristics and deviation of the phase angle in the overall load range. To improve this disadvantages, In this paper, the characteristics of the high efficiency and unit voltage gain as well as in-phase are revealed in the proposed three-level LCLC (Inductor-Capacitor- Inductor-Capacitor) resonant converter. The results are verified on the simulation based on the theoretical analysis and the 4kW experimental Prototype.

Design of Dexterous Manipulator for MIS (복강경 수술을 위한 지능형 작동기의 제작)

  • Song, Ho-Seok;Chung, Jong-Ha;Lee, Jung-Ju
    • Proceedings of the KSME Conference
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    • 2004.11a
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    • pp.823-828
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    • 2004
  • Minimally Invasive Surgery (MIS) is surgery of the chest, abdomen, spine and pelvis, done with the aid of a viewing scope, and specially designed instruments. Benefits of minimally invasive surgery are less pain, less need for post-surgical pain medication, less scarring and less likelihood for incisional complications. Since the late 1980's, minimally invasive surgery has gained widespread acceptance because of the such advantages. However there are significant disadvantages which have, to date, limited the applications for these promising techniques. The reasons are limited degree-of-freedom, reduced dexterity and the lack of tactile feeling. To overcome such disadvantages many researchers have endeavored to develop robotic systems. Even though some robot aided systems achieved success and commercialized, there still remain many thing to be improved. In this paper, the robotic system which can mimic whole motions of a human arm by adding additional DOF is presented. The suggested design is expected to provide surgeons with improved dexterity during minimally invasive surgery.

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Implementation of Visual Data Compressor for Vision Sensor of Mobile Robot (이동로봇의 시각센서를 위한 동영상 압축기 구현)

  • Kim Hyung O;Cho Kyoung Su;Baek Moon Yeal;Kee Chang Doo
    • Journal of the Korean Society for Precision Engineering
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    • v.22 no.9 s.174
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    • pp.99-106
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    • 2005
  • In recent years, vision sensors are widely used to mobile robot for navigation or exploration. The analog signal transmission of visual data being used in this area, however, has some disadvantages including noise weakness in view of the data storage. A large amount of data also makes it difficult to use this method for a mobile robot. In this paper, a digital data compressing technology based on MPEG4 which substitutes for analog technology is proposed to overcome the disadvantages by using DWT(Discreate Wavelet Transform) instead of DCT(Discreate Cosine Transform). The TI Company's DSP chip, TMS320C6711, is used for the image encoder, and the performance of the proposed method is evaluated by PSNR(Peake Signal to Noise Rates), QP(Quantization Parameter) and bitrate.