• Journal of the Korean Society for Aviation and Aeronautics
• /
• v.25 no.3
• /
• pp.115-122
• /
• 2017

To achieve designed quality and reliability from R&D to force integration, an establishment of precise and distinct specifications and standards are required. However, the recent process of R&D standardization on defense acquisition system, has brought plenty of corrections on specifications and standards that may cause not only difficulties to production line and retardation to the military forces, but also a degradation of provided weapon systems. Therefore, a technical review should be performed by the developer, the producer, and the client, establishing the standard that include mass production requirements as well as clients' requirements. This paper propose a specified solution on process of R&D standardization, by applying a substantial FCA(Functional Configuration Audit) and PCA(Physical Configuration Audit) which implies participation of related agencies. By the improved PCA, 2,023 corrections on 74 types of QAR(Quality Assurance Requirement)s and 12,715 corrections on drawings are identified.

• Proceedings of KOSOMES biannual meeting
• /
• 2005.11a
• /
• pp.71-74
• /
• 2005

This paper describes Fishery Safety and Security System using F-AIS based on the concepts of RFID(Radio Frequency Identification). This system is to track, protect and arrest the thief who invaded in an fishing ground. The system composed with various functional modules to implement selectively available system providing low cost to high cost and simple function to high function according to user's requirement in a practical fishing fields. Sea trial tests are carried out at Mokpo, Busan and Incheon and, it is found that the system can guard the wide area of cultivating farm field.

• Journal of the Korean Society of Systems Engineering
• /
• v.11 no.1
• /
• pp.1-7
• /
• 2015

The purpose of this paper is to present the results of reengineering of the YGN 3&4 (Yonggwang Nuclear Power Plant, Units 3&4) SDS (Safety Depressurization System) retrofit design and to make recommendations for the improvement in design and design procedure implementing the Systems Engineering (SE) process. YGN 3&4 is a basic model for OPR1000 (the Korean standard 1000 MWe plant). The basic model, herein, represents the reference plant for the OPR1000 development. In the middle of the YGN 3&4 construction, the Korean Nuclear Regulatory Body requested a retrofit of this plant with a means to rapidly depressurize the plant in conformance with a severe accident mitigation requirement. For the reengineering of the SDS in YGN 3&4, V-model and functional and physical architectures have been developed. A SE decision making method has been used for the selection of SDS valves. Finally, recommendations have been made to improve OPR1000 design for the improved operation and enhanced safety.

• Proceedings of the KOSOMBE Conference
• /
• v.1997 no.05
• /
• pp.55-58
• /
• 1997

In this paper we reviewed and stated the present state of our team's research of the moving-actuator type total artificial heart (MA-TAH). Especially, this paper showed new direction of researches. The integrated research of battery, telemetry, TET is required. And the real-time supervisory of the state of hemodynamic variables and MA-TAH is also needed. These requirement made us to think the supervisory control system (SCS). As functional abilities of the SCS require very high computational cost, the digital signal processor is an appropriate choice for our need.

• Journal of the Korean Institute of Telematics and Electronics C
• /
• v.36C no.10
• /
• pp.56-65
• /
• 1999

This paper presents an architecture and its instruction set for a graphic coprocessor(GCP) which can be used for a multimedia server. The proposed instruction set employs parallel architecture concepts, such as SIMD and Superscalar. GCP consists of a scheduler and four functional units. The scheduler solves an instruction bottleneck problem causing by sharing with four general processors(GPs). GCP can execute up to 4 instructions in parallel. It consists of about 56,000 gates and operates at 30 MHz clock frequency due to speed limitation of SOG technology. GCP meets the real-time DCT algorithm requirement of the CIF image format and can process up to 63 frames/sec for the DCT Algorithm and 21 frames/sec for the Full Block matching Algorithm of the CIF image format.

• Journal of Environmental Science International
• /
• v.25 no.4
• /
• pp.543-556
• /
• 2016

Sangju, a city in the North Gyeongsang Province, is well known as "Three Whites", representing its three main agricultural products: rice, silkworm, and dried persimmons. Therefore, development of a variety of dishes or products that can promote the consumption of dried persimmons is an urgent requirement for this region. This study was designed to provide fundamental information for revitalizing community-based specialized agriculture through scientific inquiry into medicinal foods and to develop a medicinal food menu based on the results of previous research and pre-survey. The pre-survey results and incompatibility revealed that palatability influenced people's decision to consume dried persimmons far more than pharmacological functionality. Therefore, palatability played an important part in the development of dried persimmon puddings with acceptable texture. These dishes are in high demand as they suit the tastes of variety of consumers. The inclusion of various additives lowered the sugar content in the developed foods and made the products alkalescent (pH > 7), thereby improving functionality. Unique color and flavor additives were also important criteria that determined the selection attributes of the developed medicinal foods. In addition, the additives had a positive effect on the fragrance and texture of the foods. In conclusion, the results suggested that use of additives provides significant advantages in promoting the consumption of Sangju-dried persimmons by improving both functionality and palatability.

• Proceedings of the Korea Concrete Institute Conference
• /
• 2005.11a
• /
• pp.769-772
• /
• 2005

The river environments of many streams in korea have been deteriorate through the rapid industrialization and urbanization since the 1960s. In Germany and Japan, on the other hand, much efforts on the research and project have been made for the restoration of the deteriorated streams to close-to-nature. in order to restore the deteriorated streams, therefore, it is necessary to investigate such advanced technologies and materials. In view of this requirement, various research paths are being taken focusing on coarse aggregates to make multi-functional porous concrete having continuous voids so as to improve water and air permeability, acoustic absorption, water purification, and applicability to vegetation. The Purpose of this study is to investigate the method for recovery of the environment in the streams area using porous concrete block. the porous concrete block applies for test in the cheonggae-cheon have been monitored planting during six month. after 6 months, plant grows flourishing and reconstructed in state such as nature rivers.

• Journal of the Korean Society of Costume
• /
• v.63 no.2
• /
• pp.68-81
• /
• 2013

The purpose of this study is the improvement of the senior patients' life quality by providing aesthetic and emotional stability by creating and providing a newly designed patient wear for them. Empirical research and analysis were done for the research. Survey from advanced research and clothing design for the senior citizens in Japan and German are analyzed. The result of this research extracted characteristics, which applied to the production of a severe senior patient wear. And the following characteristics emerged: affordability, comfort, aesthetics, and ease of putting on the clothes. To meet these conditions by the details of the clothing design, using fasteners like zippers and Velcro is useful. It is able to solve the problem of affordability making the vertically integrated overalls to be able being separated by zippers in order to reduce the volume of laundry. It was able to overcome the discomfort due to contamination of the feces through the use of the fasteners even though the importance of choosing the comfort material related closely to the comfort. Using material mixed with multiple colors, plaid or bright pink, instead of using neutral colors fulfilled the aesthetic requirement. In Particular, utilizing detachable function fasteners contributed great services.

• Fashion & Textile Research Journal
• /
• v.17 no.3
• /
• pp.440-446
• /
• 2015

This study identified active senior women's wearing and the purchase situation of bicycle wear to develop functional bicycle wear that can satisfy active senior consumers. The survey was conducted for women in their fifties and sixties who ride bicycles on a regular basis. A total of 119 questionnaires were used for data analysis excluding incompletely replied questionnaires. Data was analyzed by descriptive analysis, frequency analysis and cross analysis. The results are as follows. First, 50's individuals represented 60% of this survey who continuously rodebicycles for 5 years or more. The purpose of riding bicycle was exercise, leisure and club activities. Second, they wore bicycle wear while riding due to activity, functionality and safety. There is also a requirement to manufacture comfortable bicycle wear easy to put on and take off and for old people. Third, considering the purchase situation of bicycle wear, the respondents had difficulties buying bicycle wear due to price. It is necessary to have bicycle wear at a reasonable price. Fourth, the most necessary functionsforbicycle wear materials were ventilation and durability. A major function needed for future developmentwill bethermoregulation.

• Journal of the Korean Society for Precision Engineering
• /
• v.24 no.7 s.196
• /
• pp.98-105
• /
• 2007

In modern industries, materials are required that possess multi-functional properties and at the same time flexibility in their shapes with structural stability. The major technology realizing this requirement consists of thinning metal wires and laying them with stable contact nodes. This research has dealt with a new method to manufacture thin wires by drawing without applying dies, but with introducing enforced necking, which enables to process multi-ends. Based on the new method, the process dynamics was modelled and its steady-state characteristics were analyzed. Results showed that the profiles of the material velocity in the drawing zone increased with a downward convex shape, while the cross-sectional area decreased with the shape of upward convex. The microwave heating turned out to be effective in wire drawing, but dependent on the input feeding direction. The variation in the diameters of the drawn wires was negatively affected by increasing the drawing ratio.