• 로봇학회논문지
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• 제15권3호
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• pp.277-285
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• 2020

A differential drive wheeled robot is a kind of mobile robot suitable for indoor navigation. Model predictive control is an optimal control technique with various advantages and can achieve excellent performance. One of the main advantages of model predictive control is that it can easily handle constraints. Therefore, it deals with realistic constraints of the mobile robot and achieves admirable performance for trajectory tracking. In addition, the intention of the robot can be properly realized by adjusting the weight of the cost function component. This control technique is applied to the local planner of the navigation component so that the mobile robot can operate in real environment. Using the Robot Operating System (ROS), which has transcendent advantages in robot development, we have ensured that the algorithm works in the simulation and real experiment.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 International Symposium on GPS/GNSS Vol.1
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• pp.349-354
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• 2006

For robust INS/GPS navigation system, an efficient multi-filter fusion technique is proposed. In the filtering for nonlinear systems, the representative filter - EKF, and the alternative filters - RHKF filter, SPKF, etc. have individual advantages and weak points. The key concept of the multi-filter fusion is the mergence of the strong points of the filters. This paper fuses the IIR type filter - EKF and the FIR type filter - RHKF filter using the adaptive strategy. The result of the fusion has several advantages over the EKF, and the RHKF filter. The advantages include the robustness to the system uncertainty, temporary unknown bias, and so on. The multi-filter fusion technique is applied to the tightly coupled INS/GPS navigation system and the performance is verified by simulation.

• 한국정보통신학회논문지
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• 제12권4호
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• pp.627-635
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• 2008

무선 Ad hoc 네트워크에 지향성 안테나를 사용함으로써 간섭의 영향 감소, 공간재이용(spatial reuse) 증가, 그리고 통신용량 증가 등의 장점을 실현할 수 있다. 그러나 기존의 IEEE 802.11 MAC 프로토콜은 무지 향성 안테나를 고려하여 설계되었기 때문에 기존의 MAC 프로토콜을 지향성 안테나를 탑재한 무선 Ad hoc 네트워크에 적용할 경우 그 장점을 효율적으로 제공할 수 없다. 본 논문에서는 최적의 공간재이용을 통한 성능향상을 달성하기 위한 MAC 프로토콜을 제안하였으며, 시뮬레이션을 통하여 기존의 MAC과 통신효율과 종단간 지연을 비교하였다.

• 복식문화연구
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• 제27권1호
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• pp.33-45
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• 2019

This study identified types of online retail internationalization in the fast-fashion context and proposed driving factors of retailers' choices in online-based market entry following the logic of the Uppsala model and the eclectic theory. In particular, this study proposes three types of online-based internationalization: 1) entering a host market with a physical store first, and then expanding with an online store, 2) entering a foreign market with an online store, then expanding to physical stores, and 3) entering only with an online business. In addition, this study investigated the causal factors, ownership-specific and location advantages, that influence the choice of the type of developmental process of online-based internationalization. To develop theoretical and managerial insights into the issue researched, this study employed a qualitative research design involving case studies of three European fast-fashion retailers, H&M, TOPSHOP, and ASOS. This study suggested that fast-fashion retailers that enter a host market with high ownership-specific advantages are likely to choose to enter the market with physical stores and then expand with online stores. On the other hand, when faced with uncertainties attributable to low ownership-specific or location advantages, fast-fashion retailers are likely to choose to enter with an online store first and then expand with physical stores as conditions change. Consequently, this study provides a better understanding for fast-fashion retailers who are willing to expand their businesses to foreign markets via online stores.

• The Journal of Asian Finance, Economics and Business
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• 제8권3호
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• pp.237-249
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• 2021

Indonesia has successfully increased its ranking to 40th place in the 2019 Travel & Tourism Competitiveness Index. While tourism has become the country's second largest foreign exchange contributor, there is no existing competitive advantage model for Indonesian tourist destinations. The purpose and novelty of this study is to develop and formulate a competitive advantage model for Indonesia's tourism industry. The model will be based on the supply-side perception analysis of competitiveness indicators from Bali and five designated super-priority destinations in Indonesia. This model is expected to become a guideline for policymakers to design an effective and focused strategy. Data were obtained from in-depth interviews with, and questionnaires given to, 62 qualified industry players from the public and private sectors. This data-driven approach builds a relationship between competitiveness indicators and competitive advantages using a combination of importance-performance analysis and confirmatory factor analysis, thereby leveraging these advantages to generate a strategic model to compete in the international tourism industry. This would also be the first study to use this method in defining the competitive advantage of a destination. Using structural equation modeling, the study found that there are 54 indicators representing twelve dimensions of competitive advantages with good fit criteria.

• International Journal of Computer Science & Network Security
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• 제21권5호
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• pp.199-210
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• 2021

Recently, research in blockchain technology has grown in popularity. Most of these researches have pointed out designing and improving conceptual structures to create digital systems that are more secure, accessible, and effective. Although blockchain offers a wide range of advantages, it also has some pitfalls. This research aims to present an understanding of the properties of blockchain, the advantages, pitfalls, and applications based on blockchain technology. To achieve the goal of understanding blockchain technology concepts, a systematic literature review approach was introduced. 93 papers were chosen and reviewed in total. Therefore, this research provides a summary of recent studies that have been published in the field of blockchain. Moreover, we have created concept maps and tables that aid in a deep understanding of blockchain technology concepts and exhibit some of the blockchain applications. In blockchain-based applications, we focused on two areas, namely the Internet of Things (IoT) and healthcare.

• 한국임상약학회지
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• 제31권4호
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• pp.285-292
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• 2021

Background: Recently, the Korean Association of Pharmacy Education has been focusing on competency-based education (CBE) and has established required areas of competencies to improve the graduation competency. However, competency-based assessment (CBA) tools for implementing CBE have not yet been developed for faculty members and students to successfully access the assessment tests. Moreover, the faculty members in charge in pharmacy schools have encountered various barriers in recruiting individuals with integrated clinical experience to act as virtual patients. Therefore, this study aimed to identify the advantages and limitations of applying CBA tool and faculty assessors in the development of CBE to ensure the reliability of this assessment. Methods: Utilizing CBA tool, the students' communication skills and styles were assessed. students and faculty assessors were surveyed to evaluate the advantages and limitations of the CBA tool. Results: 8 assessors and 96 students participated in this study. 100% (8/8) of the faculty assessors and 77.4% (65/84) of the students reported that CBA tool is valuable to assess and improve student's ability. 90.5% (76/84) of the students felt confident in applying knowledge to patient-centered care. CBA tool can be a valuable for the instructors in identifying the competency level of students but can also be associated with limitations in implementation to ensure the objectivity and reliability of the CBA. Conclusions: The CBA tool can be valuable in assessing the level of students' competency. Faculty assessors have the advantage of well-prepared themselves for patient roles, so that the time and cost required may be minimized.

• Journal of Smart Tourism
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• 제2권4호
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• pp.25-34
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• 2022

Digital transformation plays a critical role in making hospitality and tourism organizations create new business processes and customer experiences. The hospitality and tourism industry thrives on creating unique experiences by offering exceptional and innovative customer services through innovative digital technologies. Thus, this study provides an overview of the current use of these technologies in the hospitality industry and their potential advantages and opportunities. In particular, the metaverse and immersive virtual reality (VR) technology are gaining popularity in the hospitality industry, offering new opportunities for innovation and driving core values. This study discusses the current use of VR and metaverse and potential advantages and opportunities for researchers and practitioners in the hospitality and tourism context. Thus, we provide suggestions and implications for hospitality and tourism industry stakeholders to increase core values and business performance and create sustainable competitive advantages over other market players through VR and metaverse.

• 한국안광학회지
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• 제19권1호
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• pp.9-16
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• 2014

목적: 본 연구는 울산의 안경원 방문 고객과 안경사를 대상으로 프랜차이즈(franchise) 안경원과 소규모 개인 독립 안경원에 대한 인식을 비교 분석하여 앞으로 안경사 및 안경원의 나아가야 할 방향을 제시하고자 하였다. 방법: 울산의 안경원을 방문한 고객 152명과 울산의 안경원 종사자 50명을 대상으로 설문조사하였다. 결과: 고객이 생각하는 프랜차이즈 안경원의 장점은 체계적 시스템과 서비스, 단점으로는 비싼 가격, 고객과의 소통부족 등으로 조사되었다. 개인 독립 안경원의 장점은 고객과의 원활한 소통, 가격, 전문성, 단점으로는 서비스부족, 인테리어 미비, 더딘 트렌드 반영, 시스템, 가격으로 나타났다. 안경사가 생각하는 프랜차이즈 안경원의 장점은 서비스, 시스템, 고객과의 소통, 안경사 교육, 단점으로는 동일한 인테리어, 과도한 이벤트, 고객과의 소통부족 등으로 조사되었다. 개인독립 안경원의 장점은 서비스, 고객과의 소통, 단점으로는 프랜차이즈 안경원에 비해 체계적이지 못한 시스템, 이벤트 부족, 인테리어 미비 등으로 나타났다. 결론: 안경사는 가격경쟁에만 치우칠 것이 아니라 프랜차이즈 안경원과 개인 독립 안경원 각각의 장점을 최대한 살려서 전문성과 신뢰를 바탕으로 정당한 경쟁을 통해 상호 발전할 수 있는 방안을 마련하는 것이 바람직할 것으로 사료된다.

• Asia pacific journal of information systems
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• 제17권2호
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• pp.1-28
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• 2007

The success of new product development is a key factor for getting competitive advantages. Marketing research has been investigating marketing capability, manufacturing technical capability, cross-functional integration, market knowledge competence, market orientation, and competitive environment as the key success factors of new product development. Recently, the role of IT infrastructure in enhancing new product advantage is assumed in the literature. However, the empirical studies on the role of IT infrastructure are lacking. The purpose of this study is to empirically exam the impacts of IT infrastructure on new product competitive advantage. In this study, IT infrastructure is conceptualized as the flexibility of IT infrastructure. Based on previous research, a conceptual model is established by incorporating the direct impact of IT infrastructure flexibility and its indirect impact through the key success factors on new product development. To empirically test the research model, data are surveyed from a pair of IS department and Marketing department of 92 consumer goods manufacturers. By employing PLS technique, the measurement reliability and reliability of research variables are tested and the path analysis is conducted to do the hypothesis testing. The path analysis shows that IT infrastructure flexibility has no direct effect on new product advantage, However, the indirect effect of IT infrastructure is found, which is mediated by marketing capability, manufacturing technical capability, cross-functional integration, and market orientation respectively. Hence, The flexible IT infrastructure increases cross-functional integration (H1), market orientation (H3), marketing capability (H5), and manufacturing technical capability (H6). All success factors of new product development excepts for competitive environment have a positive association with new product competitive advantages (from H10 to H14). Finally, the path from IT infrastructure flexibility to cross-functional integration, to market orientation, to market knowledge capability, and to new product advantage is found as the strongest path. These results indicate that the flexible IT infrastructure enhances information sharing with multiple departments and collaboration within a distributed innovation environment. The collaboration among departments positively affects the level of customer and competitor intelligence. The ability to obtain knowledge about customers and competitors makes firms to adapt to a changing environment quickly and to respond to customers' demands adequately. The flexible IT infrastructure also enhances the capability of organization to more rapidly respond to the changes in product design resulting in faster product development and reduced costs. In addition to, it enhances marketing capability by the two-way communications with customers and the analyses of various kinds of customer data. In brief, the finding of this study suggests that the flexible IT infrastructure allows many firms to pursue sustained new product competitive advantages. This study advances research on IT infrastructure in two important aspects. First, by Integrating marketing research and IS research, this study develops a conceptual model on the role of IT infrastructure in enhancing new product advantage. Second, it empirically finds the indirect impacts of IT infrastructure on new product advantage, which confirms the potential for the IS field to contribute to new product development research. The limitations of this study are also discussed to provide research directions for future research.