• Journal of Ocean Engineering and Technology
• /
• v.26 no.3
• /
• pp.20-25
• /
• 2012

In this paper, the authors propose a new approach to the control problem of marine vessels that are moored or controlled by actuators. The vessel control system is basically based on Dynamic Positioning System (DPS) technology. The main object of this paper is to obtain a more useful control design method for DPS. In this problem, the control allocation is a complication. For this problem, many results have been given and verified by other researchers using a two-step process, with the controller and control allocation design processes carried out individually. In this paper, the authors provide a more sophisticated design solution for this issue. The authors propose a new design method in which the controller design and control allocation problems are considered and solved simultaneously. In other words, the system stability, control performance, and allocation problem are unified by an LMI (linear matrix inequality) based on control theory. The usefulness of the proposed approach is verified by a simulation using a supply vessel model.

• Journal of the Korea Safety Management & Science
• /
• v.9 no.3
• /
• pp.73-84
• /
• 2007

This paper was concerned about design and implementation of supply chain management for auto-part company by adopting a UML(Unified Modeling Language). The part of SCM and e-business have interested by larger company, researcher and academic professor. There has been known about a little implementing SCM and it's initiatives for SME(small-medium sized enterprise). We, in this paper, dealt with design and implementing the SCM on supply chain auto part SMEs. The UML is a standard language for specifying, visualizing, constructing, and documenting the artifacts of software systems. It simplifies the complex process of software design, making a blueprint for the SCM implementation. In this paper, we also adopt some methods for the systematic system analysis, design, and implementation by applying UML to a SCM system.

• International Journal of Contents
• /
• v.13 no.2
• /
• pp.50-56
• /
• 2017

The number of accidents in school zone is decreasing than before with the introduction of strengthening traffic safety policy since January 2011, but the danger still exists. The School zone sign is widely known to have much effect in protecting children from risks of traffic accidents, but design improvement is being demanded to improve a sense of safety and legibility of safety signs in School zone due to the lack of understanding on the safety signs in crosswalk and School zone. This study analyzed differences in shape and color of existing safety signs through a case analysis of traffic developed countries as America, England, Japan, and Germany and suggested improvement plans for drivers to clearly perceive the school zone. For improvement methods, this study suggested the importance of delivering definite and unified warning message for school zone to drivers by using indication sign and caution sign together, and to use yellow, a safety color, and to unify the safety sign into triangle shape that symbolizes warning and caution to conform the international standards. Actual design production and experiment through improvement plans are needed in the future, and it is expected to secure safety of children and to provide international standardization of safety signs in school zone.

• Korean Institute of Interior Design Journal
• /
• v.19 no.3
• /
• pp.234-241
• /
• 2010

Avoiding the unified productivity that was caused by the mechanical and technical development due to Industrial Revolution in the past, modern design is incessantly evolving in search of new motive, namely, diversity. Further, we live in the age when the propensity that serves public interest and purpose and sometimes shows quite individual character should be considered. As a result, the comprehensive and harmonious trend of emotional design is being highlighted more remarkably. Involving the social background that further respects human dignity, this is closely related to diverse issues such as human right which should be guaranteed and pursued for individual. While the tradition and innovation caused by the encounter of machine and art had confrontation and conflict in the past, the direction has changed to incessant evolution and interaction where paradigm of technical progress and development is newly composed and changed in modern times. The meaning of service in medical area is expanding and developing from the simple treatment to the more comprehensive healing. Medical space will evolve to the healing space that attaches importance to emotional aspect of human dimension which further understands and respects human being in the future.

• Korean Institute of Interior Design Journal
• /
• no.30
• /
• pp.59-67
• /
• 2002

Marcel Breuer is considered one of the most important furniture designers of the 20th century. He studied at the Bauhaus in Weimar from 1920 to 1924 and in 1925 became master of the furniture studio at the Bauhaus in Dessau. Virtually from the outset, he was one of the most prolific and inventive designers at the bauhaus and fulfilled its claim to create designs for serial production. Gropius, the Bauhaus founder, had a profound influence on his furniture designs. In 1925, Breuer created the tubular-steel armchair, which revolutionized design and technique in the field, marking the advent of a new era. The furniture that was developed, by him and by others, from this design - technically cool, but light, elegant and clear - became the very symbol of modernism. Despite the success of his tubular-steel furniture, Breuer went on to explore the use of other new materials, such as aluminium and plywood. He made use of these new materials, which were associated with new technologies, to create new forms, as it were, some which proved to be foreunners of later developments in furniture design. Breuer had a profound influence on the evolution of modern design through his furniture designs, which received worldwide recognition and acclaim. His work unified functionality and beauty in a way that was to become a valid expression of its time and simultaneously far ahead of it.

• Journal of the Korean Institute of Gas
• /
• v.14 no.1
• /
• pp.47-54
• /
• 2010

In order to reduce the number of installation processes and the cost, a unified ball valve and polyethylene-steel pipe is proposed and tested. An integrated design approach is carried out such that a virtual manufacturing based on finite-element analysis is first performed in order to examine contact conditions under exaggerated temperature variations (${\Delta}T\;=\;60^{\circ}C$ and $-50^{\circ}C$ for summer and winter, respectively). From the final design configuration, it was predicted that the maximum contact pressures are 71 and 8.1 MPa for summer and winter, respectively, at relatively larger contact surface. Based on this observation, a prototype model is fabricated to go through an actual leakage test. The prototype pipe passed a hydrostatic strength test successfully, showing no leakage at even much higher (54 MPa) than the operational pressure (0.25 MPa).

• Journal of the Korean earth science society
• /
• v.21 no.6
• /
• pp.719-733
• /
• 2000

Normally, a digital geologic map can be defined as mappable one whose spatial information with geographic information details and geologic database attribute, recorded in a digital format that is readable by computer. It shows fundamentally two different conceptual perspectives: cartography for digital mapping and analysis for geo-data processing. While, as both aspects basically relate to natural entities and their interpretation of complex features fused with multi-sources, digital geo-data mapping or geologic mapping, it should be distinguished from digital mapping in engineering such as UIS(Urban Infomation System) and AM/FM(Automated Mapping/Facilities Management). Furthermore, according to short-cycled development of GIS(Geographic Information System) software architecture based on IT(Information Technology) and wide expansion of GIS applications' fields, the importance of domain analysis and application model is emphasized at digital geologic informatizaion. In this paper, first terms and concepts of geo-data model with general data modeling aspects are addressed, and then case histories for geo-data modeling and several approaches for data modeling in GIS application fields are discussed. Lastly, tentative conceptual geo-data modeling by using UML(Unified Modeling Language) of OO(Object-oriented) concepts with respect to USGS/AASG geo-data mode is attempted. Through this approach, the main benefits for standardization and implementation lineage with conceptual model in consideration to reusability are expected. Conclusively, it is expected that geo-information system and its architecture by UML is the new coming key approach for the GIS application in geo-sciences.

• 유체기계공업학회:학술대회논문집
• /
• 2002.12a
• /
• pp.47-53
• /
• 2002

The hydraulic design optimization and performance analysis of mixed-flow pumps for waterjet marine vehicle propulsion has been carried out using mean streamline analysis and three-dimensional computational fluid dynamics (CFD) code. In the present study the conceptual design optimization has been formulated with a non-linear objective function to minimize the fluid dynamic losses and then the commercial CFD code was incorporated to allow for detailed flow dynamic phenomena in the pump system. New designed mixed-flow model pump has been tested in the laboratory. Predicted performance curves by the CFD code agree very well with experimental data for a newly designed mixed-flow pump over the normal operating conditions. The design and prediction methods presented herein can be used efficiently as a unified hydraulic design process of mixed-flow pumps for waterjet marine vehicle propulsion.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.19 no.12
• /
• pp.2987-2992
• /
• 2015

In this paper, we propose the framework under a standardized task configuration to improve data accuracy and to provide unified system for the outfitting production design in shipyards. Due to the mismatching engineering data, the wrong designs or drawings were produced. With these wrong information, the production process can be broken and faced a big problem during production stage. In this study, we propose novel framework and its components which can offer better supporting for the design task and its process to improve productivity and efficiency with knowledge based engineering support system.

• Archives of design research
• /
• v.19 no.5 s.67
• /
• pp.65-74
• /
• 2006

As the world approaches to a keen competition for design, corporations began to be interested in CI (Corporate Identity), PI (Product Identity) as a way of enhancing the valve of corporation that has competitive power. PI (Product Identity) leads communication to an affirmative direction that is formed when the consumer uses products and feels the image of corporation. It is said to be important that it is part of synthetic and systematic strategy of corporation to gain an advantage over competitor in the market place with an unified corporate image. Even though mobile phones are sensitively changed according to a trend and public fancy, PI (Product Identity) of mobile phones is also important. The study purports to ascertain the propensity of Nokia's PI (Product Identity) and to analyze their unique PI.