• KSII Transactions on Internet and Information Systems (TIIS)
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• v.6 no.9
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• pp.2231-2252
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• 2012

With the prevalence of diverse services-oriented applications, such as IPTV systems and on-line games, the current underlying communication networks face more and more challenges on the aspects of flexibility and adaptability. Therefore, an effective and efficient multicast routing mechanism, which can fulfill different requirements of different personalized services, is critical and significant. In this paper, we first define the neighbor gradient, which is calculated based on the weighted sum of attributes such as residual link capacity, normalized hop count, etc. Then two distributed multicast routing algorithms which are neighbor Gradient-based Multicast Routing for Static multicast membership (GMR-S) and neighbor Gradient-based Multicast Routing for Dynamic multicast membership (GMR-D), are proposed. GMR-S is suitable for static membership situation, while GMR-D can be used for the dynamic membership network environment. Experimental results demonstrate the effectiveness and efficiency of our proposed methods.

• International Journal of Precision Engineering and Manufacturing
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• v.8 no.1
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• pp.59-65
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• 2007

This paper suggests a method for developing computer code that can solve inverse heat conduction problem, The concept of the object-oriented development is employed to implement the computer code in an efficient and flexible fashion. The software design is conducted based on the unified modeling language. Furthermore, this paper also explains how to implement the deliverable computer code using the existing software development tools.

• Journal of the Korean Society for Heat Treatment
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• v.31 no.6
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• pp.269-274
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• 2018

Grain-oriented electrical steel sheets are mainly used as core materials for transformers and motors. They should have excellent magnetic properties such as low core loss, high magnetic flux density and high permeability. In order to improve the magnetic properties of the electrical steel sheet, it is important to form Goss oriented grains with a very strong {110}<001> orientation. Recently, efforts have been made to develop Goss grains by controlling processes such as hot rolling, cold rolling, and primary and secondary recrystallization. In this study, the sheets containing 3.2 and 3.4wt.% Si were used, which were rolled with 1 and 10 passes with total thickness reduction of 89%. Heating was carried out for primary recrystallization with different heating rates of $25^{\circ}C/s$ and $24^{\circ}C/min$ until $720^{\circ}C$. The behavior of Goss-, {411}<148>-, and {111}<112>-oriented grains were analyzed using X-ray diffraction(XRD) and electron back-scatter diffraction(EBSD) analysis. The area fraction of Goss-oriented grains increased with the number of rolling passes during cold rolling; however, after the primary recrystallization, the area fraction of the Goss grains was higher and exact Goss grains were found in the specimens subjected to rapid heating after one rolling pass.

• Journal of the Korean Association of Geographic Information Studies
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• v.9 no.3
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• pp.193-206
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• 2006

This paper proposes The Efficient method that should design Geosensor model based on object oriented design pattern and implement the Geosensor network interface system using JBuilder. Such as geosensor technology will be to a new research paradigm of GIS which can manage a great quantity of field information by means of constructing the real time remote sensing network. The technology that integrates object oriented design pattern Geosensor interface network with GIS will be necessary elements that satisfy the function of GIS increasing day by day. Therefore, we would like to utilize GoF design pattern in order to change for the better object oriented Geosensor middleware. This paper shall contribute to implementing the optimal Geosensor interface that can develop reusable, modular and modifiable software by using the object oriented design pattern.

• Journal of KIISE:Software and Applications
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• v.31 no.7
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• pp.883-900
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• 2004

As object-oriented development technology that increases extensibility and reusability has been widely spread, it can shorten development period and enhance quality by reusing verified object-oriented artifacts. Thus we can construct high quality component-based system at short time transforming component-based model using verified object-oriented artifacts. In this paper, we propose techniques to transform available object-oriented design model into component-based model using formal specification techniques in order to increase accuracy of transformation. First, formal specification language for component is defined for formal specification of component-based design. And, techniques for formal specification of object-oriented design using Object-Z, a formal specification language, is proposed in structural, functional, and dynamic aspects. Next, we present techniques for transforming formal specification of object-oriented design into formal specification of component-based design. Through a case study we apply the proposed transformation techniques and show the transformation process of object-oriented formal specification into component-based formal specification.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.73
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• pp.111-128
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• 2017

The main objective of this study is to examine the required aptitudes for undergraduate students who want to join export-oriented Small & Medium Enterprises(SMEs). 178 Dataset from a survey of exporting firms in Gwangju, Korea, were used to analyze the study. The results of the study are as follows ; First, the most required aptitude is 'the capability related to build up human relationship'. So students should learn negotiation skills in the college. In addition to this, student also try to join informal club and cultivate teamwork capabilities. Second, finding out a job in export-oriented SMEs is needed to equip with problem-solving capabilities. To do it, students should learn various subjects related to trade theory. Additionally, having some certificates like 'international trade master' can be better. Third, communication capabilities including foreign language and international business skills will be also required for students who are preparing for joining export-oriented SMEs. However, capabilities related to information technology and basic statistic skills does not have statistically significant correlation to recruitment intention. As a result, students who have such above-mentioned four aptitudes may have better position to find out jobs in export-oriented SMEs.

• Journal of Korean Society for Quality Management
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• v.46 no.3
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• pp.695-706
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• 2018

Purpose: This study investigates success factors of ENEX which is a leading company in the kitchen furniture industry in South Korea, based on the perspective of customer satisfaction and corporate social responsibility. ENEX has grown to a successful mid-sized firm with competitive technology as a result of pursuing customer-oriented management since its establishment in 1971. Methods: Recognizing the importance of customer satisfaction, this study analyzed several cases of customer-oriented management of ENEX and interpreted their findings. Results: The successful embedment of customer satisfaction DNA in the whole organization is a major success factor of ENEX. It has been applying 7 WISE policy to all business processes from the product development to after-service to create customer value. Also, top management has fully exercised leadership to make customer-oriented organization, leading to ENEX being a competitive firm to provide products and services which can impress customers. Conclusions: ENEX has conducted various social activities based on corporate social responsibility. This study would also provide meaningful insights to understand the importance of customer-oriented management.

• Asian Journal of Business Environment
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• v.7 no.4
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• pp.17-25
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• 2017

Purpose - The purpose of this study is to present a framework for determining the most appropriate business model for e-learning. Research design, data, and methodology - The Electronics Branch of Azad University has been elected as a case study in this research. This study conducted using a descriptive method. The information was obtained using interviews with experts including managers, faculty and students at the Electronics Branch of Azad University. Results - Three service-product system (product oriented system, use an oriented and result oriented system) approaches determined a framework for the formation of a portfolio. This portfolio is including three types of e-learning business models. Examining the relevant characteristics, correspondence of behaviorism learning theory with a product-oriented approach, correspondence of cognitivism theory with a user-oriented approach and in finally match correspondence of constructivist learning theory with a results-oriented approach which is evident. Conclusions - After reviewing the literature on the fields of e-learning, business model and product - service systems, we have achieved three types of e-learning business models. Then the variables in any of the business models were defined by using business model canvas tool and thus a portfolio consisting of three types of e-learning business model canvas was obtained.

• Journal of KIISE:Software and Applications
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• v.30 no.11
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• pp.1102-1111
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• 2003

Spreadsheet is one of the most widely used programming tool because of its ease of use, however there have been few researches on applying object-oriented techniques in developing spreadsheet applications. Generally, spreadsheet applications contain a lot of errors, and spreadsheet has some drawbacks such as low reusability and hard maintenance. In order to solve these problems, we introduce an object-oriented spreadsheet system, named XCEL. It enables users to develop applications using systematic techniques with data modelling method, and allows users to apply object-oriented technologies to spreadsheet programming. The data modelling method allows to define classes using XML and flowchart, and the spreadsheet represents an object with contiguous cells. XCEL has advantage that users can apply object-oriented technology to spreadsheet programming.

• 한국정보통신설비학회:학술대회논문집
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• 2008.08a
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• pp.573-578
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• 2008

While going through economic development for several decades, Korea has become an industrialized country, and the development of industrial technology accelerated the advent of the information opportunity era. The recent information oriented society has brought forth the development of new information communication technology that enables anybody to obtain information easily and simply, and recently power line communication technology is being developed that allows the use of the existing power line net-works as they are. Each advanced country that faced up to a riffle effect of power line communication technology that enables us to obtain information easily anywhere at anytime is engaged in fierce competition to be a leader in this technology and to preoccupy the standardization of power line communication technology. At this point, this study is to help Korea take the lead in information communication technology by proposing a direction for the standardization that Korean power line communication technology needs to head for by identifying the trend of the worldwide of power line communication technology.