• Biomolecules & Therapeutics
• /
• v.13 no.4
• /
• pp.199-206
• /
• 2005

Cell therapy (CT) is a group of techniques to treat human disorders by transplantation of cells which have been processed and propagated independent of the living body. Blood transfusion and bone marrow transplant have been the primary examples of cell therapy. With introduction of stem cell (SC) technologies, however, CT is perceived as the next generation of biologies to treat human diseases such as cancer, neurological diseases, and heart disease. Despite potential of cell therapy, insufficient guidelines have been implemented concerning safety test and regulation of cell therapy. This review addresses the safety issues to be resolved for the cell therapy, especially SC therapy, to be successfully utilized for clinical practice. Adequate donor cell screening must preceed to ensure safety in cell therapy. In terms of SC culture, controlled, standardized practices and procedures should be established. Further molecular studies should be done on SC development and differentiation to enhance safety level in cell therapy. Finally, animal model must be further installed to evaluate toxicity, new concepts, and proliferative potential of SC including alternative feeder layer of animal cells.

• The Korean Journal of Nuclear Medicine
• /
• v.5 no.1
• /
• pp.71-76
• /
• 1971

7 laboratories located in Seoul were surveyed for the standardization of radioiodine thyroid uptake test in Korea. The result revealed that the currently utilized methods are almost standardized now, when the reference standard is IAEA recommendation method, 1962. Mean 24 hour uptake of thyroidal $^{131}I$ in Korean euthyroids is $31.6{\pm}8.80%$, and no significant interlaboratory differences are noticed. These results were caused probably by the late introduction of detector facilities into Korea after the appearance of publication of IAEA recommendations.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2014.05a
• /
• pp.204-205
• /
• 2014

Among common test methods of assessing structure safety for existing lightweight walls, the criteria of the quality assessment of the horizontal static load resistance has been considered ambiguous. In the current study, therefore, an experiment was conducted to figure out the standardized assessment criteria of the lightweight wall's horizontal static load resistance. Based on the findings of the experiment with gypsum board and ALC block walls, an acceptable amount of each standard and the variables of the stud wall arising from the appropriate load (1000N) on the wall in a daily life were accounted for, arbitrarily setting the maximum deformation amount below 15mm.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2000.05a
• /
• pp.480-483
• /
• 2000

We developed a home electric panel board with surge protection device to protect home electric appliances from transient overvoltages and electromagnetic(EM) noise. In this paper, electrical characteristics of the home electric panel board are described. From the performance test using a combination surge generator standardized in IEC 610004-5, it is confirmed that the proposed home panel board has an excellent surge protection performance. Also, EM noise reduction characteristics of the panel board in ranges from 150 kHz to 30 MHz is estimated by using a network analyser, and the results showed that the panel board has an over 20 45 noise reduction performance.

• Korean Journal of Child Studies
• /
• v.28 no.4
• /
• pp.305-317
• /
• 2007

This study investigated the effect of maternal interactive styles, parenting stress, home environment stimulation and social support on poverty in early childhood. Participants consisted of 145 mothers and their children living in Seoul and Kyounggi Province. Data included videotaped observations of parent-child play and standardized measures of social support, parenting stress, home environment, and child development. Results of the t-test indicated significant differences among father's age and education, mother's age and education, and income over the variable of poverty. Regression analyses indicated that home environment stimulation was the strongest predictor of variance in children's development. Results from the regression analyse were supportive of the hypothesis that home environment moderates the impact of poverty on children's development.

• Korea Journal of Hospital Management
• /
• v.23 no.3
• /
• pp.16-27
• /
• 2018

Purposes: The purpose of this study was to analyze the association between discrimination experience and quality of life among non-regular workers in hospitals. Methodology: The data was collected from 292 employees of 7 university hospitals using a standardized questionnaire. In research methodology, the data was analyzed with descriptive statistics, t-test, ANOVA, pearson's correlation, multiple regression analysis. Findings: In case of non-regular workers, inequality of distribution, position unfairness, employment instability, number of discrimination experiences were found to have a negative(-) effect on quality of life. Religion, income in general characteristics had a significant positive(+) effect on quality of life. And the discrimination of non-regular woman workers was higher and the quality of life was lower than that of men. Practical Implications: These results showed that hospitals needed active efforts to create non-regular woman-friendly work environment. In addition, active religious activities gave emotional stability and positive effect to no-regular workers.

• Proceedings of the KIEE Conference
• /
• 1992.07a
• /
• pp.211-213
• /
• 1992

Fuzzy L. P. with Multi-criteria function is adopted in this VAR allocation algorithm to accomplish the optimization of co-conflicting objectives, such as the amount of the VAR Installed and power system loss, while keeping the bus voltage profile within an admissible range. fuzzy L. P., a powerful tool dealing with the fuzziness of satisfaction levels of the constraints and the goal of objective functions, enables us to search for the solutions which may contribute in VAR planning. This advantage Is not provided by traditional standardized L. P. The effectiveness of the proposed algorithm has been verified by the test on the IEEE-30 bus system.

• IEMEK Journal of Embedded Systems and Applications
• /
• v.4 no.4
• /
• pp.156-163
• /
• 2009

Recently a standard software platform for automotive, AUTOSAR, has been developed to manage growing software complexity and improve software reuseability. However reuse of testing system and test data are difficult because they are dependant on implementation language and testing phases. In this paper, we suggest a automated testing approach for AUTOSAR software component using a standardized testing language, TTCN-3. AUTOSAR defines the AUTOSAR XML Schema for the data exchange format so that it is possible to automatically convert AUTOSAR model into TTCN-3 testing model. Therefore our approach is to present generation techniques for the TTCN-3 testing system from a AUTOSAR XML description. With the proposed testing techniques we can reduce time and effort to build the testing system and reuse testing environment.

• 유체기계공업학회:학술대회논문집
• /
• 2000.12a
• /
• pp.99-103
• /
• 2000

This paper describes the development of standard series for turbo blowers. In mass production system, it is very required to standardize blowers to improve the productivity of ordering, estimating, manufacturing. To standardize blowers, we performed researches on the effects of $b_1$(impeller inlet width), $b_2$(impeller outlet width), ${\beta}_1$(blade inlet angle), ${\beta}_2$(blade outlet angle), Z(number of blades) of impellers and geometry of casing experimentally. Through this study, we chose the several best model of turbo blowers with high efficiency and low noise, which represent each specific speed series 63, 80, 100, 125, 160, 200, 250, 315. After the development of such standardized blowers, the test results are used to prepare the fan geometry and performance database for a selection software.

• Journal of the Korean Home Economics Association
• /
• v.23 no.4
• /
• pp.109-121
• /
• 1985

This is a study to grasp the correlation between high school students' social persenality and residential environment. THe samples were 197 boys and 200 girls who were attending the high schools located in Pusan. Social personality which contains family relations and social relations was measured by the standardized test of K.T.C. The path-analysis was used to make the causal relations of the collected data clear. RESULTS : 1. Feeling on the residential environment underwent the most potent influence by the floor space per person and social personality by feeling on the residential environment. 2. For the boy-students, the family relations andsocial relations was affected by the case of renthouse, the family relations by the case of noisy residence, and the social relations by the case of no-private room. 3. For the girl-students, the cases of higher stories and having private room made the family relations unharmonious, the cases of narrow floor space per person and the single house made the social relations troublesome, too.