• Proceedings of the Korea Concrete Institute Conference
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• 1998.10b
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• pp.627-632
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• 1998

This study developed practical computer program COL2 to design of generic shape reinforced concrete short columns subjected to combined compression and biaxial bending. The program COL2 has been developed for user-friendly environment using Excel 97 for windows 95. Several examples including for analysis of geometrically complex column sections subjected biaxial bending are included in this paper.

• Korean Institute of Interior Design Journal
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• v.20 no.6
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• pp.11-18
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• 2011

Including interior architecture, diverse fields of study for eco-friendly environment is in progress due to the world's crisis consciousness of global environment. And nevertheless, practical use of the research results are still low and systematical problems of the studies are inevitable reality. Thus, this study focused on to the enbodiment of green interior architecture study understanding the problems of precedence studies to make suggestion for the future direction and balancing green interior architecture study seeking for better motivation. Analysing results of the precedent studies indicates that the existing studies loss its diversity and concentrated in the narrow based directions. For the enbodiment of green interior architecture, not simply immerse existing planning method found from case study, the study need to perform in overall areas of green interior architecture and diversify its direction. Besides space designer, user's consciousness are also important results to form a new paradigm of eco-friendly environment. For the applications and use of the study results as the design factor in green interior architecture, first and the most important stept is to innovate attitude towards the nature and shift of consciousness through education as well as the relative studies of design and planning realm to drive both technical, and non-technical design factors are highly demanded.

• Journal of the Korean housing association
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• v.22 no.5
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• pp.21-28
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• 2011

This thesis aims to identify the design guidelines for environmental plans for the facilities for the aged people with a focus on the users' needs and the concept of aging in place. For this purpose major environmental design factors were researched by analyzing spaces and interviewing the managers and supervisor of W nursing home in Jeju Island that was opened in 1980s. Surveyed factors were divided into five categories, and by applying the design guideline theory of age friendly environment and nursing home facilities to them, five municipal composition factors of Kevin Lynch, universal design, environmental behavior model of John Zeisel principles were found. On the other hand, the environmental changes and development process of W nursing home is a showcase that reveals the importance of narrowing the gap in the opinions of the space users, the experts of architecture and administration which is emphasized in the principles of Inquiry by Design of John Zeisel. This research is expected to be used effectively for the researchers who study the space designs for the age-friendly environment.

• Korean Institute of Interior Design Journal
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• no.41
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• pp.226-235
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• 2003

The importance of the community centers has been increased throughout the decade. With the interest on the centers, the quality of the architectural design of the centers have been much improved. But the importance of the interior design and color' design of the centers have been ignored. It is quite sure that the quality of the interior design impact on the satisfaction degree of the users. And color is the important element which can control the quality of the interior design economically. This study surveyed the three community centers in Seoul to investigate the status of the color usages. And to consider the user's need, and preference in color design, this study performs the questionnaire about the color image and color pallette preference of the users and interior design professionals. Mainly highly bright and low chromatic YR colors were used, giving rigid and monotonous atmosphere. The most preferred color image were warm, bright and secondly friendly, simple, soft, open. And the preference for pallette were various but we can find the difference of color preference and color combination type according to the user's group. As a result, This study proposes the basic guidelines for color design, such as ideal color Image and color and color combination type and color pallette. This proposals can be applied as a basic guideline for color design of the community centers.

• The Journal of the Korea institute of electronic communication sciences
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• v.18 no.5
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• pp.859-866
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• 2023

This paper focuses on configuring a user-friendly system of LED systems by applying improvement measures such as gamma correction, non-flicker, and driving noise removal using MCUs and LED drivers. As a result of the experiment, the 22kHz PWM mode of the LED driver generated noise outside the audible frequency range, making it practically imperceptible to users. The appropriate pull-up resistor values within the normal operating delay ratio of 5% were found to be 1kΩ to 10kΩ for the 3kHz PWM mode and 1kΩ to 2kΩ for the 22kHz PWM mode. In addition, gamma correction can be optimized for nonlinear human visual systems to express accurate contrast and as a result, it is expected to develop an LED system that can be expressed more naturally and accurately than conventional LED systems and improve users' visual experience.

• Korean Institute of Interior Design Journal
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• v.21 no.4
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• pp.48-56
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• 2012

Digital technology in modern society is entering the era of digital convergence and ubiquitous computing, and is playing an important role to overcome the limitation of time and space. Based on new media method's rapid application development, a wide range of forms as digital design is made possible. A large part of our living such as information sharing, collaboration, production, recreation, working and various social activities has been realized from the space that digital media offer. As we see a much broader range, the digital media's diverse expressions affect, in interactive ways, not only the relationship between humans and things, between each individual human, and between humans and the environment, but also even emotional purification and realm of educational, cultural, and social aspect. In this study, the aim is to discuss the user-centered design considered for integration into the interaction space design method and is to concentrate on research on. Focusing on digital media, user-friendly interface features of the space environment, construction and utilization of digital media have been applied to try to analyze the interaction effect of space that is created for the design and application of various applications and will seek ways. Thus, various case-studies have been explored where interface space is developed, creating virtual reality through cognitive basis and 3-D interface space. For example, emotional expressions are embedded for the space of commerce, education and exhibition, enabling intercommunication through haptic interface, with changing sound and visual effects which are caused by the movement of people in a certain space. With consideration of the relationship between physical environment and objects, interactive design should be achieved by providing a human oriented interface based on social, cultural and environmental aspects.

• Journal of the Korean Institute of Educational Facilities
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• v.24 no.3
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• pp.3-13
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• 2017

This study has developed a design indicator required to promote green remodeling in school facilities. And, implemented the green remodeling pilot test on the school facilities that are planning actual remodeling. This pilot test suggested user participation design methodology such as verification of the developed design indicator, design goal setting, evaluation and adjustment of design proposal. The Green Remodeling Design Indicators were classified into 3 large categories of architectural performance, usability, and design through analysis of cases related to 'green buildings' and 'remodeling'. We have developed nine middle categories such as architectural and structural performance, facility performance, environmentally-friendly, circulation, space, amenity, harmony with surroundings, form and symbolization. In addition, 42 detailed indicators were developed for each category, including general, functional, and special indicators. For the verification of this study, two green remodeling design workshops were conducted for Gwangju J elementary school. The first design workshop presented the importance of the design indicator and set the goal of the design plan of green remodeling for project. And, the second Workshop presented the evaluation of the satisfaction with the design and the direction of future adjustment for project. The design indicator developed in this study can be utilized as a design indicator of design quality management and decision system for the school green remodeling in the future. In addition, by accumulating information on the Green Remodeling Project, it is necessary to spread green remodeling and construct a sustainable building environment.

• The Journal of Korea Robotics Society
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• v.9 no.1
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• pp.67-77
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• 2014

An electric motor is the one of the most important parts in robot systems, which mainly drives the wheel of mobile robots or the joint of manipulators. According to the requirement of motor performance, the controller type and parameters vary. For the wheel driving motors, a speed tracking controller is used, while a position tracking controller is required for the joint driving motors. Moreover, if the mechanical parameters are changed or a different motor is used, we might have to tune again the controller parameters. However, for the beginners who are not familiar about the controller design, it is hard to design pertinently. In this paper, we develop a nominal robust controller model for the velocity tracking of wheel driving motors and the position tracking of joint driving motors based on the disturbance observer (DOB) which can reject disturbances, modeling errors, and dynamic parameter variations, and propose the methodology for the determining the least control parameters. The proposed control system enables the beginners to easily construct a controller for the newly designed robot system. The purpose of this paper is not to develop a new controller theory, but to increase the user-friendliness. Finally, simulation and experimental verification have performed through the actual wheel and joint driving motors.

• Journal of the Korean Society for Library and Information Science
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• v.31 no.3
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• pp.165-208
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• 1997

The purpose of this study is to evaluate the characteristics of user interface that affect the searching behavior of OPAC users. and then to propose how to design user-friendly interfaces of OPACS. An experiment was conducted on two systems with different interfaces to grasp the effect of user interface to search process and search outcome. A $2\times2$ cross-over design was used for the experiment. Sixty five searchers participated in the experiment. Several statistical techniques such as carry-over effect and system effect of a $2\times2$ cross-over design, $\chi^2$ test, t- test, McNemar test, test of marginal homogeneity through maximum likelihood method, factor analysis, regression analysis, and analysis of variance were applied according to the hypotheses tested and the data analyzed.

• Archives of design research
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• v.15 no.1
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• pp.289-298
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• 2002

Under the circumstances of general use of Internet, the construction of on-line system has been made in various fields. We can use and share the informations will other people through the cyber communities and find many ways to promote communication tools. Project Room is a sort of Cyber Space which carry out design project using On-fine system. Users(Designers and Clients) will be able to develop their design project using Internet. The project content may be opened and will be critically contributed the construction of Knowledge-based industry. At the same time, the development of user-friendly tutorial should be fellowed. Tutorial is one of the most important factors to promote Project Room. This study presents the possibility of execution of Cyber community under the construction of Project Room and User-friendly tutorial in the On-line system.