• Journal of the Ergonomics Society of Korea
• /
• v.29 no.4
• /
• pp.521-525
• /
• 2010

UX (User Experience) Design was an interdisciplinary approach in humanities, engineering, science and design. We classified the roles of user experience; requirement analysis which are user research, constraints analysis and direction analysis, concept design, information architecture, physical UI, graphical UI, sound UI, Olfactory UI, prototype, evaluation, launch, localization, and knowledge management/UI DB. User research methods were classified by the relation of designer, user, and product/service. We reviewed three issues of UX design; complexity management, efficiency management, and mapping management.

• Proceedings of the KIEE Conference
• /
• 2001.04a
• /
• pp.381-383
• /
• 2001

A system engineering play a key role in new signalling system development. The signalling system development process consists several phases which are requirement analysis, functional analysis, system synthesis and system analysis. Each phase of the development are decomposed according to system engineering process. The key topics to be considered are shown in the each phase such as safety. This paper shows the application of system engineering process to a signalling system development.

• 제어로봇시스템학회:학술대회논문집
• /
• 1998.10a
• /
• pp.53-57
• /
• 1998

Star tracker placement configuration is proposed and the properness of the placement configuration is verified for star tracker's sun avoidance angle requirement. Precision attitude determination system is successfully designed using a gyro-star tracker inertial reference system for a candidate LEO spacecraft. Elaborate kalman filter formulation for a spacecraft is proposed for covariance analysis. The covariance analysis is performed to verify the capability of the proposed attitude determination system. The analysis results show that the attitude determination error and drift rate error are good enough to satisfy the mission of a candidate spacecraft.

• Proceedings of the KIEE Conference
• /
• summer
• /
• pp.1022-1024
• /
• 2004

This paper presents a design and characteristics analysis of an SRM drive for EPS application. A rack mounted EPS system is considered in this paper. In the unrestricted design conditions, motor parameters are determined for sufficient torque and speed with some restrictions. For the smooth torque generation and simple circuit of power system, 12/8 motor drive is considered. With FEM and magnetic circuit analysis, redesigned motor is simulated to meet the requirement of specifications. Effectiveness of the suggested SRM drive for EPS application is verified by redesigned motor drive tests.

• International Journal of Aeronautical and Space Sciences
• /
• v.17 no.3
• /
• pp.401-408
• /
• 2016

During daylight, the solar array of low earth orbit satellites harvests electrical power to operate satellites. The power conversion of the solar array is carried out by control of the operation point using the solar array regulator when the solar array faces the sunlight. Thus, the design of the solar array should comply with not only the power requirement of satellite system but also the input voltage requirement of the solar array regulator. In this paper, the design requirements of the solar array for low earth orbit satellites are defined, and the means of satisfying these requirements are described. In addition, the architecture of a multi-distributed interface is suggested to maximize the power harvested from a solar array having high temperature deviation between each panel. The power analysis in this paper shows the optimal number of multi-distributed interfaces with a converter.

• Journal of the Korea Institute of Military Science and Technology
• /
• v.21 no.5
• /
• pp.630-639
• /
• 2018

This paper proposes the design and implementation of adaptive naval gun fire simulator on a naval combat system. The proposed simulator can log data, analysis logged data, modify the BCU(Ballistic Computing Unit) S/W in real-time, and evaluate gun fire performance to check it satisfy requirement or not. When the simulation result satisfies the requirement, the BCU S/W is installed on onboard system. The simulation results show that similar result with actual naval gun fire reslult.

• Journal of Internet Computing and Services
• /
• v.10 no.1
• /
• pp.175-182
• /
• 2009

Less efforts has been made in developing specifications and verification techniques for quality requirements. This paper suggests specification and traceability methods supporting quality issues such as usability, performance, and understandability when developing information systems with UML notation. With traceability checking methods that augment quality extension to the use cases and sequence diagrams, developers can confirm the level of implementation for both functional and nonfunctional requirements beforehand.

• Steel and Composite Structures
• /
• v.27 no.5
• /
• pp.613-622
• /
• 2018

The requirement to safe and economical buildings caused to the exploitation of nonlinear capacity structures and optimization of them. This requirement leads to forming seismic design method based on performance. In this study, concentrically braced frames (CBFs) have been optimized at the immediate occupancy (IO) and collapse prevention (CP) levels. Minimizing structural weight is taken as objective function subjected to performance constraints on inter-story drift ratios at various performance levels. In order to evaluate the seismic capacity of the CBFs, pushover analysis is conducted, and the process of optimization has been done by using Bee Algorithm. Results indicate that performance based design caused to have minimum structural weight and due to increase capacity of CBFs.

• Journal of Korean Society of Archives and Records Management
• /
• v.12 no.1
• /
• pp.79-94
• /
• 2012

The BMS(Bussiness Management System) included conferences, directions, memo system and operated bussiness classification based on. The high valued BMS contains many faulty functions managing records. A purpose of this study is analyzing BMS in archival science. Morever, this study deals with resolving problems for seamless flow managing records.

• International Commerce and Information Review
• /
• v.9 no.4
• /
• pp.307-328
• /
• 2007

This paper discusses some requirement issues of future global e-trade. Korea has been making lots of efforts on e-trade promotions and many research results support that the performance of e-trade should be increased. There are still many unsolved issues as well as future demands in this area. In this paper, we propose some e-trade requirements for next generation and those are e-trade governance, collaboration enhancement among trading participants, the utilization of e-trade documents repository, the expansion of global e-trade network, and e-trade intelligence just to name a few. For each requirement, we propose some research topics as well as practical implications for improving the performance of global e-trades. One can find some useful thoughts for the future research based on the propositions made by this paper.