• Korean Journal of Computational Design and Engineering
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• v.8 no.3
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• pp.141-149
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• 2003

The ship STEP is an international standard for the computer-interpretable representation of ship product information and for the exchange of ship product model data. The ship STEP consists of several APs(Application Protocol), such as AP215(ship arrangement), AP216(ship moulded form), AP218(ship structures), AP226(ship mechanical systems), and AP234(operating logs, records, message). The STEP AP216(ISO 10303) are an application protocol for the exchange of ship arrangement and ship moulded forms. The AP216 specifies the geometric shape and the hydrostatic properties of the ship moulded form. This paper introduces the state-of-the-art of ship STEP AP216 and develops the test case for the validation of data structure of AP216.

• Proceedings of the Korea Concrete Institute Conference
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• 1997.04a
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• pp.635-642
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• 1997

This research focused on the development of concrete overlay and test, which was conducted at 88 Highway 105k, 2 lanes of 290 m. The field application test consists of 6 cm and 10 cm bonded concrete overlay and 25 cm unbonded concrete overlay, using the slag cement for opening lanes for traffic early. The overlay were placed in a day. The whole period of traffic closing wes 8 day and it was reopened to traffic after concrete overlay has cured for 3 day. 5 cracks were founded when the field test section was investigated after 1 month, but all these may not make significant problems to overlay because these initiated and growed at the same line of repair section. The rideability and skid resistance become much better like in the new pavement after overlay. The structural capacity against deflection was much. which were verified by FWD(Falling Weight Deflectometer). The field test section is being used in a good condition and the results of field application and pavement performance analysis are encouraging. This rehabilitation methods may be adopted in Korea after a more field performance verifications.

• Proceedings of the KIEE Conference
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• 1998.11b
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• pp.669-671
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• 1998

Due to the serial nature of scan chains, the use of the boundary scan chain leads the high application costs. And with 3-state net, it is important to avoid enabling the two drivers in a net. In this paper, the new test method for 3-state nets in the multiple boundary scan chains is presented. This method configures the boundary scan cells as multiple scan chains and the test application time can be reduced. Also three efficient algorithms are proposed for testing the interconnects in a board without the collision of the test data in 3-state nets.

• Journal of Ocean Engineering and Technology
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• v.11 no.3
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• pp.95-99
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• 1997

In these days, the pollution of marine environment near island at Korean coastal zone caused by the trash human waste and livestocks excreata become intensified. One of the most economic and efficient way to prevent this pollution problem is to set up island circulating incineration system. In this paper, the result of feasibility study on the application of turtle boat hull form to the incinerating vessel has been summarized especially for the resistance and course keeping point of view.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2005.05a
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• pp.64-68
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• 2005

In recent years, there has been a growth of the manufacture and application of magnesium products because of its small specific gravity as well as its relatively high strength. However, there are so many studies to assure good formability because magnesium sheet alloy is difficult to form. In this study, uniaxial tensile and biaxial tensile test of AZ31 magnesium sheet alloy with thickness of 1.2mm were performed at room temperature. Uniaxial tensile test were performed until $7\%$ of engineering strain. R-values and stress-strain curve were obtained. Biaxial tensile tests with cruciform specimen were performed until the breakdown of the specimen occurs. The yield loci are made by application of plastic work theory. The results are compared with the theoretical predictions based on the Hill and Logan-Hosford model. However, next study will be performed at warm-temperature because the specimens are broken under the $0.5\%$ of equivalent strain at biaxial tensile test.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 1996.10a
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• pp.248-254
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• 1996

In this paper active vibration control system using a linear oscillatory actuator (LOA) is studied to suppress structural vibration. Being compared with a hydraulic actuator, a LOA has simplified structure and requires a few elements, so it has lots of merits with respect to economics and maintenance. Performance test of active vibration control system using LOA is carried out on a steel test structure under base excitation. From this test it is confirmed that acceleration level of test structure is reduced near the resonance region. In the future research on the application to large to structures will be studied.

• The KIPS Transactions:PartD
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• v.15D no.3
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• pp.347-354
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• 2008

In order to enhance the productivity of mobile and develop reliable software, the test of mobile application software should be required absolutely. The most important way to communicate to users has been used to GUI. But GUI test method in mobile has no the test automation system except manual test by checklist. In this paper we present a test method and tool by image flow to reduce the time required and finds out errors to GUI, by carrying out the study on automatic GUI testing tool based on image flow to GUI test of mobile application.

• Proceedings of the KIEE Conference
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• 2001.07c
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• pp.1768-1770
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• 2001

EHV power cables can take any damage during shipping, transportation, handling, storage and installation. As the damage influences a reliability of the power cable system in the short and long periods, field tests have been required, for installers, to confirm the reliability of an installed system and, for utilities, to make sure the compatibility of an installed system. Of field tests, a HV withstand test for the cable insulation has been performed to check the soundness of the insulation. For EHV XLPE power cables, the test has been done by applying a specified d.c voltage till lately. But as some problems with the d.c test is emphasized and the equipment for the a.c test is improved, the a.c test is considered positively as an after-installation test. This paper describes the recent trends of the a and its recent application in the field.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.5 no.6
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• pp.515-520
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• 2004

Core-based system-on-a-chip (SoC) designs present a number of test challenges. Two major problems that are becoming increasingly important are long application time during manufacturing test and high volume of test data. Highly efficient compression techniques have been proposed to reduce storage and application time for high volume data by exploiting the repetitive nature of test vectors. This paper proposes a new test data compression technique for SoC testing. In the proposed technique, compression is achieved by partitioning the test vector set and removing repeating segment. This process has $O(n^{-2})$ time complexity for compression with a simple hardware decoding circuitry. It is shown that the efficiency of the proposed compression technique is comparable with sophisticated software compression techniques with the advantage of easy and fast decoding.

• The KIPS Transactions:PartD
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• v.16D no.3
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• pp.361-370
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• 2009

Recently, the most mobile application software developers are being faced by short developing time (fast time-to-market), various requirements and requirement changes. In order to overcome the environment, developer should support user friendly GUI and assure the quality from the early developing process using GUI test method. This paper proposes a test method and tool for mobile software GUI, which reduces test time and supports comfortable test environment by user oriented UI design. We implemented a tool based on test scenarios based image flow for high testing accuracy and test case reusability. And the results show the characteristics of the method compared to the existing tools.