• Korean Management Science Review
• /
• v.4
• /
• pp.84-98
• /
• 1987

After a brief discussion of the reality of OR/MS, a detailed examination is made of the impacts of academic OR/MS on its practice. These impacts include the dispersion of OR/MS in organizations, the traditional role of OR/MS, researchers, and the narrow interpretation of decision making process of current OR/MS, and the dissolution of its interdiciplinarity. The changes in OR/MS environment which should have evoked adaptive responses from it, but were not considered. The increasing inappropriateness of OR/MS methodology is discussed by focusing on the deficiencies of its concept and practice of optimization and academic role of OR/MS researchers. These deficiencies, it is argued, can be overcome by a comprehensive reconceptualization of the field, its methodology, the extended role of OR/MS researchers. Finally, the example of realizing New Paradigm, the Full Corporate Modelling with Simulation, is presented.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.9 no.5
• /
• pp.1840-1855
• /
• 2015

Troubles are often met when traditional active contours extract boundaries of medical images with inhomogeneous bias and various noises. Focusing on such a circumstance, a localized mutual information active contour model is discussed in the paper. By defining neighborhood of each point on the level set, mutual information is introduced to describe the relationship between the zero level set and image field. A driving energy term is then generated by integrating all the information. In addition, an expanding energy and internal energy are designed to regularize the driving energy. Contrary to piecewise constant model, new model has a better command of driving the contours without initialization.

• Journal of KIBIM
• /
• v.5 no.1
• /
• pp.16-24
• /
• 2015

The kinetic façade system is an interactive building envelope which is adaptive to environmental condition by transforming the behaviour of its components. The design process of kinetic façade system calls for a novel approach. It needs to support designers to adopt technologies from multidisciplinary fields such as physical computing and robotics. In this paper, prototyping method is introduced as a useful technique for implementing kinetic façade systems. In order to incorporate prototyping method into architectural design process, two aspects are investigated in digital design studio: (1) The interactions between digital and analogue environments (2) The role of traditional design tools. Furthermore, the role of BIM is investigated by analyzing two aspects.

• Transactions of Materials Processing
• /
• v.9 no.6
• /
• pp.574-581
• /
• 2000

A vertically-walled auto-body part is one of the most difficult stamping parts because of angle change, wall curl, and twisting of the blank after springback as well as fracture and wrinkle. In this study, computational simulations of the vertically-walled auto-body part are carried out focusing on angle change, wall curl, and twisting after springback. Binderwrap blank shape is used in forming analysis for precise initial contacts between punch and blank. An adaptive mesh method is used in springback analysis for precise calculation of bending moments. In springback analysis, the differences of 2 and 3 dimensional analysis are compared and the effects of blank holdig force and friction coefficient are evaluated. In order to verify the validity of simulation results, they are compared with measured ones. The predicted thickness distribution and formed shape are agreed well with those of the measurement. The Predicted springback amount is less than that of the measurement.

• Archives of design research
• /
• v.19 no.5 s.67
• /
• pp.223-232
• /
• 2006

This is a study related to CI and BI, focusing on the change of an organization: a corporation. The organization of a corporation, in order to achieve the goal of an organization, get the injection(labor, technology, resources) and send it out to society by transforming them into a form of products(goods and services). While this production means the organization plays a social part for the accomplishment of a goal of the society, it indicates the society exerts influence on the process of setting the goal of an organization. On the other hand, a society influences the existence of a corporation through need and change directly or indirectly and in order to adjust to this, a corporation adapt the form of the organization to the need and change of a society. This study presents the causes of change from CI to BI according to the organizational changes of a corporation and theoretical basis through Elbin Toefler's "The Adaptive Corporation".

• Journal of KIISE:Information Networking
• /
• v.32 no.5
• /
• pp.625-632
• /
• 2005

Recently, real time services have been demanding a lot and the number of mobile devices is increasing extremely. Many researchers are focusing on decreasing handoff or signaling cost, produced when mobile devices are moving around. With these efforts, HMIPv6(Hierarchical Mobile Internet Protocol Version 6) was proposed. Mobile nodes do not need to register their locations to Home Agents whenever crossing over subnets within a MAP domain. In HMIPv6, mobile nodes choose the farthest MAP without considering node mobility pattern. However, a large MAP domain is not always efficient for a slow moving node and required additional work to choose a MAP in HMIPv6. Hence, this paper proposes 'Performance Analysis of HMIPv6 applying adaptive MAP Domain Site'.

• Proceedings of the Korea Contents Association Conference
• /
• 2006.05a
• /
• pp.160-163
• /
• 2006

If an instruction system understood the interest and activeness of a learner in real time, it could provide some interesting factors when a learner is tired of learning. It could work as an adaptive tutoring system to help a learner to understand something difficult to understand. Currently the area of the facial expression recognition mainly deals with the facial expression of adults focusing on anger, hatred, fear, sadness, surprising and gladness. These daily facial expressions couldn't be one of expressions of a learner in e-Learning. They should first study the facial expressions of a learner in e-Learning to recognize the feeling of a learner. Collecting as many expression pictures as possible, they should study the meaning of each expression. This study, as a prior research, analyzes the feelings of learners and facial expressions of learners in e-Learning in relation to the feelings to establish the facial expressions database.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.16 no.2
• /
• pp.259-265
• /
• 2012

Recently, many research works are focusing on DVC (Distributed Video Coding) system for low complexity encoder. Most DVC systems need feedback channel for parity bit control to achieve the good RD performances, however, this causes the system to have high decoding latency and is considered as one of the most critical problems for real implementation. In order to overcome this problem, this paper proposes an effective distributed video decoding method using adaptive LDPCA frame-based parity bit request estimation. The proposed method applies for the pixel-domain Wyner-Ziv system and exploits the statistical characteristics between adjacent LDPCA frames to estimate adaptively the parity bit request. Through computer simulations, it is shown that the proposed method achieves about 80% of latency reduction compared to the conventional no-estimation DVC system.

• The Journal of Korean Institute for Practical Engineering Education
• /
• v.2 no.1
• /
• pp.1-7
• /
• 2010

Recently, interest in u-learning to pursue effective learning by using ubiquitous environment in teaching and learning activities. In u-learning environment, learners should be able to push necessary information at the right time and the right place. Also calm technology oriented to, and this means that it can recognize learners' terminal information and to provide adaptive interface. In u-learning environment, main learning terminals would be mobile terminals which support mobility. However, learning in the existing PC environment should not be excluded. Thus, by providing adaptive interface according to various learners' terminal in LMS for u-learning, learners are able to learn through consistent and natural learning interface with any computer or any network at any place and at any time. The purpose of this study is to propose the interface adaptation based on terminal information focusing on the layout transformation process in the development environment.

• Journal of the Korean Data and Information Science Society
• /
• v.28 no.3
• /
• pp.647-658
• /
• 2017

This study aims to explore the relative influences of covert narcissism and evaluative concerns perfectionism on SNS addiction tendency, and the mediating effect of evaluative concerns perfectionism in the influence of covert narcissism on SNS addiction tendency of undergraduates. The results of this study can be summarized in the following. First, control failure and disturbance of adaptive, avoidance of negative emotion, and virtual life orientation and withdrawal were best accounted for by exploitation/self-centeredness. On the other hand, absorption and tolerance was best accounted for by hypersensitivity/vulnerability in undergraduates. Also, SNS addiction tendency was accounted for by only socially prescribed perfectionism of evaluative concerns perfectionism. Second, evaluative concerns perfectionism partially mediated the relations between covert narcissism and absorption and tolerance and between covert narcissism and virtual life orientation and withdrawal, while it didn't mediate the relations between covert narcissism and control failure and disturbance of adaptive and between covert narcissism and avoidance of negative emotion.