• Journal of the Korean Society of Safety
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• v.18 no.3
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• pp.101-108
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• 2003

Polymeric positive temperature coefficient(PTC) composites have been prepared by incorporating carbon black(CB) into high density polyethylene(HDPE), polyphenylene sulfide(PPS) and polybutylene terephthalate(PBT) matrices. A PTC effect was observed in the composite, caused by the large thermal expansion due to He consecutive melting of HDPE, PPS and PBT crystallites. This theory is based upon the premise that the PTC phenomenon is due to a critical separation distance between carbon particles in the polymer matrix at the higher temperature. The influence of PTC characteristics of the PPS/CB composite can be explained by DSC result. HDPE, one of prepared composition, exhibit the higher performance PTC behavior that decreaseing of negative temperature coefficient(NTC) effect and improved reproducibility by chemically crosslinking. Also, PBT/CB and PPS/CB composites exhibit the higher PTC peack temperature than HDPE/CB PTC composite, individually $200^{\circ}C$ and $230^{\circ}C$. These PTC composite put to good use in a number of safety application, such as self$.$controlled heater, over-current protectors, auto resettable switch, high temperature proctection sensor, etc.

• Journal of radiological science and technology
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• v.44 no.1
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• pp.15-23
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• 2021

In this case analysis, a patient was diagnosed with subarachnoid hemorrhage (SAH) in a 49-year-old female and showed persistent vasospasm after coil emboilzation in an aneurysm. The patient suffered from persistent vasospasm and performed angioplasty a total of 6 times. Transcranial color coded doppler (TCCD) was performed 12 times to monitor vasospasm. As a result, repetitive cerebral blood flow tests were low cost and safely performed without exposure to invasive radiation through the TCCD, and the repeatability and reproducibility of the test were confirmed with the capabilities of a trained professional radiological technologist.

• Journal of Preventive Medicine and Public Health
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• v.41 no.2
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• pp.80-83
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• 2008

An economic evaluation is required in order to apply to the Health Insurance Review and Assessment Service (HIRA) for a listing in the national drug formulary. To assist companies in preparing the necessary documents, HIRA published guidelines for the economic evaluation of pharmaceuticals in 2006. The guidelines are composed of two parts: guidance and explanatory notes. Each guideline reflects the best practice which meets both the theoretical consensus within the academic community and local situations, like data availability. To enhance the transparency of evaluation, guidelines emphasize the reproducibility of data and analysis result. That is, all evaluation processes are required to be described in enough detail to be replicated by reviewers. With growing experience and theoretical development in this area, HIRA guidelines will be revised periodically.

• Proceedings of the KSR Conference
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• 2005.11a
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• pp.935-940
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• 2005

We generally get the Heat Release Rate by two other method. One is the calculation method from the Oxygen consumption rate and another is the calibration curve method of Temperature rising rate. In this study we compare the results of both test methods with five same specimens. From the test result we get the difference of reproducibility and checked some reasons of the difference. This paper includes some points to be careful for more creditable results for each test method.

• Journal of Fashion Business
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• v.13 no.2
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• pp.115-122
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• 2009

Marbling dyeing technique shows beautiful flowing pattern because the pattern is transferred to the medium by the pigments floating onto the viscous solution base. However, this marbling pattern does not have any reproducibility and the result of accidental pattern formation. Marbling process contains many complicated procedures such as making marbling base, mordanting the medium, and bubble removal with size limitation. Computer changed the many aspects in textile design and digital technique is used in many design production. However, it is impossible to produce marbling pattern with digital drawing. In this research, the digital textile design starting from marbling pattern was developed for digital textile printing. Marbling was done to produce the initial motifs and scanned. Several marbling media such as silk, polyester, and paper were used. Photoshop was used to process and develop textile design based on these marbling motifs. One repeat was developed and various colorways were tried. The developed textile design were printed using DTP.

• Journal of the Korean Ceramic Society
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• v.46 no.2
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• pp.137-145
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• 2009

A remarkable improvement of the productivity in barium titanate by slurry spray pyrolysis process was realized by supplying solid source slurry into the rector. The produced barium titanate powders showed uniform powder properties, and reproducibility with higher tetragonality in the range of 80$\sim$200 nm, case by case. The secondary calcination experiments of the as-prepared powders by spray pyrolysis revealed that the powders as-prepared over 700$^{\circ}C$ showed perfectly different behavior with the lower temperature's ones and the solid state reaction’s case. The result was discussed in terms of the reaction mechanism based on the activation energy analysis.

• Journal of Korea Foundry Society
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• v.29 no.3
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• pp.138-143
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• 2009

Vacuum suction is applied to the mold during pouring in the inclined gravity die casting to remove defects such as misrun and gas porosity in the brake master cylinder. Casting defects are observed after solidification and their cause is analyzed by using the calculated results with commercial solidification and flow analysis code(ZCAST). The optimum vacuum suction is -2 cmHg, and when the start time of vacuum suction is 3 seconds after pouring, better filled result is obtained by holding it for 15 seconds. Reproducibility test under the optimum conditions attained from the above pouring tests is performed, and it is confirmed that these pouring conditions can be applied to the mass production immediately.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.33 no.4
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• pp.323-330
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• 2011

Purpose: The present study examined the reproducibility of an operation plan by comparing the jaw position of STO with the postoperative mandibular set back measurement in sagittal split ramus osteotomy. Methods: Thirty patients with class III dental and skeletal malocclusion and who were treated with BSSRO were reviewed. Three plain radiographs such as the panoramic view, the lateral cephalogram and the submentovertex view were taken before and after operation. Also, paper surgery for STO and model surgery were used to evaluate the amount of mandibular set back. Results: On the panoramic view, the amount of mandibular set back in STO was similar to the postoperative results of model surgery, but the amount of mandibular set back on the lateral cephalogram was smaller than the postoperative result of model surgery and then the amount of set back on submentovertex view was similar to the postoperative result of model surgery. Conclusion: Precise tracing and paper surgery should be performed for a combined expected STO in order to predict the exact amount of preoperative mandibular set back.

• Korean Journal of Human Ecology
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• v.15 no.3
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• pp.439-447
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• 2006

The purpose of this study is to explore the accuracy and reliability of subjective evaluation instruments in evaluating sensibility of similar fabrics, Kendall's coefficient of concordance W (agreement among subjects) and Spearman rank correlation coefficient (reproducibility after 1 week) were used to evaluate which one is more efficient. Eight kinds of linen-like silk fabrics finished with polyurethane resin were used, Subjective evaluation instruments such as rating scale method, contrasting method against a control, rank ordering method, paired comparison and Quad analysis were used, 'Stiffness and Pliability' and 'Preference of summer fabric' were estimated, From the result of subjective stiffness and pliability, which are effective on objective properties of fabric, the rating scale method in Kendall's coefficient of concordance W and Quad analysis in Spearman rank correlation coefficient were given the highest score, From the result of subjective preference of summer fabric, which are effective on individual sensibility, contrasting method against a control in Kendall's coefficient of concordance W and Quad analysis in Spearman rank correlation coefficient revealed the highest score, Regarding the accuracy, reliability and efficiency, Quad analysis was an efficient method for subjective evaluation of linen-like silk fabrics.

• Korean Journal of Oriental Medicine
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• v.18 no.1
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• pp.59-74
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• 2012

Objective : The aim of this study is to investigate current status of Sasang constitutional medicine researches and to provide source in setting a development strategy and making a policy on the Sasang constitutional medicine. Method : This study analyzed trends in research as represented in the 142 articles of Korea Institute of Oriental Medicine in the field of Sasang constitution medicine from 2007 to 2010. Result : The main themes of studies were Sasang constitution clinical study (68, 47%) and developing instruments for measuring diagnosis (48, 33%), especially pulse diagnosis (25, 17%). Genetic researches and trends studies on Sasang constitutional medicine were respectively 17 (12%) and 8 (5%). As a result, Korea Institute of Oriental Medicine established Sasang clinical information bank, and discovered clinical character of Sasang constitution to develope various diagnosis tools include constitution survey form and pulse diagnosis instrument. Genetic researches also discover constitution related genes such as FTO and MC4R, and explore association between heredity and Sasang constitution. Conclusion : The above mentioned achievements of Korea Institute of Oriental Medicine were limited to diagnosis process, unquestionably studies for reproducibility and authenticity of constitution diagnosis were important mission of Sasang constitutional medicine. However, to develop the advance of Sasang constitutional medicine, not only constitution diagnosis but also constitutional treatment studies should be conducted.