• Proceedings of the KSR Conference
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• 2005.11a
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• pp.1254-1260
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• 2005

The advanced country established the test standard (e.g., BS, EN) to measure the toxic gases quantitatively and, have applied to enhance the fire safety of railway car. We must also follow the procedures to use interior material for railway car as stated the Safety regulation for the urban railway car. Currently, various interior materials are used to obtain the fire safety of railway car. The amount of toxic gases moved into the FT-IR gas cell via sampling line from the ISO 5659 chamber using cone heater was measured and compared the results for each materials.

• Proceedings of the ESK Conference
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• 1993.04a
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• pp.41-48
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• 1993

In order to provide design concept and guidelines for the user interface of MIDAS$^{TM}$(Medical Image Display and Archiving System), a questionnire survey and empirical study were conducted. User and task requirements were analyzed based upon usrvey results. The empirical study was done on the 1.0 version of MIDAS to find out the influence of user charactenistics (i.e.job, experiences, etc.) and UI design factors(i.e. layout, wording, procedures) on various usability measures(i.e. performance, satisfaction). To perform empinical tests, eight task scenarios were selected and user interactions were recorderded using an auto-logging software. The results show that the doctor group requires more learning time. Also, eight types of user errors such as commision, omission, repeat were identified and the causes of the errors were analyzed related to UI design factors. UI design guidelines were suggested for a new version of medical image filing system.m.

• Korean Journal of Child Studies
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• v.25 no.6
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• pp.299-319
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• 2004

This study designed, implemented, and evaluated a Biblio-Counseling program for elementary school children. Procedures included 20 60-minute sessions by counselor, 18 20-minute sessions in class by teacher, and 5 20-minute sessions at home by parents. The program was administered to 23 third grade elementary school children. Data were analyzed by frequency, mean, and paired t-test, using SPSS program packages. Results showed significant before and after differences in the degree of self-esteem. Besides, the children reported increased positive expression in class and decreased peer neglect and rejection at school. Children, parents and teacher expressed high satisfaction with the program. These results suggest that the multi-faceted approach as designed and implemented in this study is effective in promoting self-esteem, interpersonal growth, and relationship between child and parents.

• Journal of the Korea Safety Management & Science
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• v.13 no.1
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• pp.133-142
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• 2011

Overhead facility design problem(OFDP) is one of the shortest rectilinear flow network problem(SRFNP)[4]. Genetic algorithm(GA), artificial immune system(AIS), population management genetic algorithm (PM) and greedy randomized adaptive search procedures (GRASP) were introduced to solve OFDP. A path matrix formed individual was designed to represent rectilinear path between each facility. An exchange crossover operator and an exchange mutation operator were introduced for OFDP. Computer programs for each algorithm were constructed to evaluate the performance of algorithms. Computation experiments were performed on the quality of solution and calculations time by using randomly generated test problems. The average object value of PM was the best of among four algorithms. The quality of solutions of AIS for the big sized problem were better than those of GA and GRASP. The solution quality of GRASP was the worst among four algorithms. Experimental results showed that the calculations time of GRASP was faster than any other algorithm. GA and PM had shown similar performance on calculation time and the calculation time of AIS was the worst.

• Bulletin of the Korean Chemical Society
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• v.34 no.1
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• pp.179-187
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• 2013

We describe newly developed software named KPACK for relativistic electronic structure computation of molecules containing heavy elements that enables the two-component ab initio calculations in Kramers restricted and unrestricted formalisms in the framework of the relativistic effective core potential (RECP). The spin-orbit coupling as relativistic effect enters into the calculation at the Hartree-Fock (HF) stage and hence, is treated in a variational manner to generate two-component molecular spinors as one-electron wavefunctions for use in the correlated methods. As correlated methods, KPACK currently provides the two-component second-order M${\o}$ller-Plesset perturbation theory (MP2), configuration interaction (CI) and complete-active-space self-consistent field (CASSCF) methods. Test calculations were performed for the ground states of group-14 elements, for which the spin-orbit coupling greatly influences the determination of term symbols. A categorization of three procedures is suggested for the two-component methods on the basis of spin-orbit coupling manifested in the HF level.

• The Bulletin of The Korean Astronomical Society
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• v.37 no.2
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• pp.194.2-194.2
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• 2012

Korea Aerospace Research Institute has developed an earth observation satellite and it was launched into its orbit in 2012 by using a foreign commercial launch vehicle. The launch site authority has imposed safety requirements to the spacecraft developer to ensure the safety of the personnel and to protect launch vehicle, spacecraft and facilities from accidents associated with the satellite operation at the launch site. This paper describes the range safety activities implemented for the satellite and supporting equipments during the whole phase of their design, manufacturing/test and operation at the launch site. To ensure the integrated requirements for safety management and design, system safety program plan has been developed. And based upon the plan, spacecraft developer conducted hazard analysis to identify and establish safety requirements to reflect in designs, procedures, operations. The result of the hazard analysis has been complied into safety data packages and it was reviewed by launch site review board at the safety reviews and finally it was approved to launch.

• Proceedings of the CALSEC Conference
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• 1999.07a
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• pp.193-205
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• 1999

Nowadays, public domain software CALS/EC projects give their attention to the importance of test and evaluation (T＆E). This article proposed a survey on T＆E procedures of the international standards ISO 9000-3, ISO/IEC 9126 and ISO 14598, and of the U.S. Army pamphlet as well as that of MIL-STD-498. And features of testing tools such as their characteristics were reviewed for a reference in selecting appropriate one. Large-scale software projects often encounter with problems during T＆E, when they become close to the end of development cycle. The problems generally act as a bottleneck of a project, leading to slippage of the entire schedule. This article tried a close look at the problems and solution alternatives of the T＆E policy, management, and technical issues, and proposed a T＆E model to support a variety of software development environment.

• Proceedings of the KSR Conference
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• 2006.11b
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• pp.1088-1096
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• 2006

In this paper, the results of safety activities for Airport Railroad are introduced according to CENELEC standards. The procedures of safety activity were redefined as 6 phases such as Requirement Analysis phase, Design phase, Manufacture phase, Installation phase, Test & Commissioning phase and Operation phase to ensure the coincidence with 14 phases recommended in CENELEC standard. And the safety activities were implemented in the aspect of the overall E&M system level and in the aspect of each system level for 6 sub-systems consisting of that E&M system to ensure the safety for Airport Railroad using the general methodology such as FMECA.

• 대한예방의학회:학술대회논문집
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• 1994.02b
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• pp.188-195
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• 1994

To an increasing extent, case-control studies are being undertaken to determine if use of early detection procedures is associated with reduced mortality from cancer. The authors recommend that in such studies the analysis focus on screening activity in cases that occurs during an interval prior to diagnosis in which the cancer is believed to be detectable and still curable and to a corresponding time period in controls. This approach places a heavy burden on the investigator to estimate accurately the period during which the tumor ought to be detectable using the test in question and to sort out reliably tests done in response to signs or symptoms of the cancer from screening tests per se. Nonetheless, the authors feel that it offers the greatest ability to discern a true benefit of screening, while minimizing the numerous potential biases that can be present in this type of study.

• Proceedings of the Korea Concrete Institute Conference
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• 2006.11a
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• pp.197-200
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• 2006

The bond characteristics of three different types of glass fiber reinforced polymer(GFRP) reinforcing bars with different surface deformations were studied experimentally. Each specimen consisted of a concrete prism, 150 by 150 mm on each edge, with the longer axis in the vertical direction. Two rebars were embedded in each specimen, perpendicular to the longer axis and parallel to and equidistant from the sides of the prism. In vertical direction, one rebar was located at 75 mm from the bottom of the prism, and the other 225 mm from the bottom. All testing procedures including specimens preparation, set-up of test equipments and measuring devices were made according to the recommendations of CSA Standard S806-02.It was found that the bottom reinforcements showed higher bond stress than that of the top rebars.