• Mass Spectrometry Letters
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• v.13 no.4
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• pp.158-165
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• 2022

Many therapeutic class drugs such as beta-blocker, corticosteroids, NSAIDs, etc are prohibited substances in the horse racing industry. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) technology makes it possible to isolate drugs from interference, enables various drug analyses in complex biological samples due to its sensitive sensitivity, and has been successfully applied to doping control. In this paper, we describe a rapid and sensitive method based on solid-phase extraction (SPE) using solid phase cartridge and LC-MS/MS to screen for different class's 35 drug targets in equine plasma. Plasma samples were pretreated by SPE with the NEXUS cartridge consisted non-polar carbon resin and minimum buffer solvent. Chromatographic separation of the analytes was performed on ACQUITY HSS C18 column (2.1 × 150 mm, 1.8 ㎛). The elution gradient was conducted with 5 mM ammonium formate (pH 3.0) in distilled water and 0.1% formic acid in acetonitrile at a flow rate of 0.25 mL/min. The selected reaction monitoring (SRM) mode was used for drug screening with multiple transitions in the positive ionization mode. The specificity, limit of detection, recovery, and stability was evaluated for validation. The method was found to be sensitive and reproducible for drug screening. The method was applied to plasma sample analysis for the proficiency test from the Association of Racing Chemist.

• Journal of Korean Public Health Nursing
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• v.23 no.1
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• pp.101-112
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• 2009

Purpose: The study was to assess marital satisfaction. needs for help, and stress of immigrant women. Method: The study employed a descriptive design of data collection. Structured Questionaires were given to the subjects; 144 women who immigrated to Korea through marriage. The data were then analyzed using $x^2$-test, one way ANOVA, and Pearson's Correlation. Results: Stress of immigrant women was significantly different according to their nationality. Housework was the highest among stress domains, the next were finance, husband, parents in law, health, children, and friends. Among these, the subject's stress was significantly correlated to the domains of husband and parents in law. The level of immigrant women's marital satisfaction was significantly different according to their job. Immigrant women's Korean proficiency was correlated to marital satisfaction and their marital satisfaction was significantly correlated to stress. Needs for help of immigrant women were rated in the following order : communication, the raising of children, culture and institution, finance, employment, socialization, marriage problem, discrimination, and self development. Conclusion: The findings of this study could be useful to help develop new programmes, and to support existing projects that help immigrant women integrate into Korean society.

• The Journal of Industrial Distribution & Business
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• v.15 no.7
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• pp.19-28
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• 2024

Purpose: The objective of this research was to investigate how blockchain ventures can optimize their wealth through Initial Coin Offerings (ICOs). Drawing upon signal theory, this study examined the impact of technological capabilities on the performance of ICOs in blockchain ventures. Given the highly technical nature of companies involved in ICOs, the technical proficiency of venture companies can have a significant influence on the success of ICOs. Specifically, three potential indicators of technological capability - patents, white papers, and source code - were analyzed. Research design, data and methodology: To accomplish this, a database was constructed by coding the relevant variables from various sources for 514 companies that launched ICOs. This study conducted hierarchical regression analysis for the hypotheses test. Results: The results indicated that a blockchain venture with a patent had a positive effect on the performance of the ICO. Additionally, publishing source code had a positive impact on ICO performance. Conclusions: This study identifies crucial factors for ICO success, emphasizing the importance of technological capabilities. Companies should enhance these to boost investor confidence, transparency, and outcomes. This research offers valuable insights for businesses and policymakers in the evolving cryptocurrency market, aiming to maximize ICO performance and success.

• Asia-Pacific Journal of Business
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• v.15 no.3
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• pp.81-100
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• 2024

Purpose - This study investigates the direct effects of national governance quality on international logistics activities. The results provide practical insights for different stakeholders such as policymakers and offer detailed recommendations for improving national governance quality in projects aimed to enhance cross-border logistics operations. Design/methodology/approach - To test the hypotheses, a multivariate linear regression model using the ordinary least squares estimator is applied to 166 countries covering six periods: 2007, 2010, 2012, 2014, 2016, and 2018. Findings - All national governance indicators have a significant positive influence on the performance of cross-border logistics operations. At the dimensional level, government effectiveness, legal systems, anti-corruption efforts and regulatory quality have a greater impact than democracy and a stable political environment on all dimensions of logistics performance. Research implications or Originality - This study sheds light on how the quality of governance directly affects trading logistics. It advises governments to enhance governance quality and nurture a supportive institutional environment to improve transnational logistics proficiency. It also provides a better understanding of the institutional backgrounds of international logistics companies in target countries before their performance plans.

• Phonetics and Speech Sciences
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• v.16 no.3
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• pp.25-31
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• 2024

The present study replicated and extended a previous research investigating whether orthographic forms, such as a single letter or a digraph representing the same sound, affect sound duration in L2 production. Results of a previous study (Han et al., 2024) showed that Korean learners produced the same English vowel with a short duration when spelled with a single letter and a long duration when spelled with digraphs. This variation in duration did not appear when producing English consonants with various spellings. However, these results may be attributable to the task type, namely the delayed repetition task, which might have prevented direct imitation from sensory memory. To test whether the overt presentation of letters shows orthographic effects for consonants as well as vowels, this study employed a read-aloud task. This study further examined whether individual differences in proficiency, measured by vocabulary size, influenced the magnitude of orthographic effects in the production of English vowels by Korean learners. The present results replicated those from the delayed repetition task, suggesting that the orthographic effects shown in previous research were not attributable to the task type employed to evaluate L2 production. We also found that individual differences in vocabulary size are not strongly related to the influence of orthography on vowel production.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.27 no.4
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• pp.313-318
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• 2016

Objective: The purpose of this study was to investigate the clinical utility of the Korean Wechsler Intelligence Scale for Children-Fourth Edition (K-WISC-IV) and General Ability Index (GAI) in children with attention-deficit hyperactivity disorder (ADHD). Methods: The GAI and Full Scale IQ (FSIQ) in K-WISC-IV were compared for a group of 79 children with ADHD and 234 normal children. The mean differences within each group were testified by the t-test and Cohen's d. The Wechsler's descriptive classifications for each GAI and FSIQ score were analyzed in the children with ADHD. Additionally, the critical value for the difference between the means of the FSIQ and GAI was calculated in the normal children. Results: The score on the GAI was higher than that on the FSIQ in the children with ADHD, with a mean difference of 2.19 points. The implications of these findings are discussed regarding the cognitive characteristics of the children with ADHD. According to Wechsler's descriptive classification, the application of the GAI showed a lower (7.59%), equal (61.65%) or higher (60.76%) prevalence of ADHD compared to the application of FSIQ. Conclusion: The implications of these findings are discussed regarding the cognitive characteristics of the children with ADHD. The GAI reflecting the attention and behavioral problems in children with ADHD could be utilized as an alternative global intelligence estimate that considers their potential for development.

• 재활복지
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• v.21 no.3
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• pp.65-84
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• 2017

This study identified predictors of intention to work among people with disabilities who maintain economic inactivity for two successive years by analyzing a total of 2,255 Participants in the 2014 data of the Panel Survey of Employment for the Disabled (PSED) with through $X^2$, t test, logistic regression. To explore factors affecting intention to work among people with disabilities who maintain economic inactivity, this study hypothesized the effectiveness of variables of demographic, disability, human resources, psycho-social factors based on previous studies. The analysis showed that male, spouse-being, low income status out of demographic variables were related to high probability of having intention to work among people with disabilities who maintain economic inactivity. In case of disability variables, experiencing disability-related discrimination significantly predicted the probability of having intention to work. However, the relationship between disability-related discrimination experiences and high intention to work needs to be viewed as correlated rather than cause-and-effect.In addition, literacy related to computer use/English proficiency/interpersonal and adaptation skills(human resources), experiences of vocational rehabilitation services (human resources), self-esteem (psycho-social) significantly predicted the probability of having intention to work among people with disabilities who maintained economic inactivity. Based on these results, support services for females with disabilities, effective rehabilitation programs of improving literacy related to computer use/English proficiency/interpersonal and adaptation skills and self-esteem, general expansion of vocational rehabilitation services for people with disabilities are suggested.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.26 no.3
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• pp.185-200
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• 2021

The Marine Environment QA/QC management system has been operated since 2010 to secure the reliability of data and improve the analysis capabilities of measurement and analysis institutions. From 2010 to 2020, the cumulative number of measurement and analysis institutions participated in the QA/QC management system was 266. And the number of certificates issued by the ministry of oceans and fisheries is 182. A total of 32 reference materials for proficiency testing and interlaboratory comparisons have been developed. They were first developed focusing on items (Nutrients, COD) commonly analyzed in marine environmental measuring network, marine pollution impact surveys, sea area utilization impact assessment, deepsea water surveys, and information network on fishing ground environments. In addition, it is time to expand the filed of the QA/QC management system, such as seawater temperature, salinity, PCBs and PAHs in sediments, which are mainly analyzed in most monitoring programs. On-site assessment has been conducted for 162 laboratories according to ISO/IEC 17025 to evaluate their conformity of the quality management system and deficiency. In terms of management and technology requirements, about 4.2% of organizations showed insufficient division of duties among employees 8.7% of them revealed the lack of employee training. By test item, about 6.3% of organizations showed the lack of standard substance management and the state of the cleaning glassware was pointed out in about 5.4% of them. The QA/QC management system should be continuously supplemented by identifying the causes of nonconformities and area for improvement.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.2
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• pp.405-414
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• 2017

In this study, a survey for a satisfaction evaluation of the Test Report Information Service (TRIS) was conducted. A survey questionnaire on modified Information System Success Model(ISSM) of Delone and Mclean was carried out by 183 users in three groups, such as munition quality assurance agency, munition corporation, and test institute. As a survey result, training on the TRIS was in strong demand in all three groups. An understanding and proficiency of the overall system were different from the work process of each user group. In addition, the munition quality assurance agency needs to enhance the system function with its characteristics. Test institute has necessity of the linkage method with the TRIS depending on the authentication system. User groups are different in the operational method of TRIS between the contractor and cooperation. Accordingly, cooperation needs to be educated continually. This study can help in the construction of a Military Quality Integration Information System to secure the reliability of munitions.

• Journal of Korean Public Health Nursing
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• v.29 no.1
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• pp.53-66
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• 2015

Purpose: This study was considered in order to identify the factors affecting healthcare utilization by Asian immigrants in the United States. Methods: From February to April 2011, a descriptive survey study was conducted in a convenience sample of 250 Korean and Asian Indian immigrants aged between 40 and 64 in the Triangle area of North Carolina. An author-developed instrument was used to assess predisposing, enabling, and need factors according to Anderson's Behavioral Model of Health Services. Utilization Data analysis was performed by $X^2$-test, t-test, and binary logistic regression. Results: Participants' healthcare services experiences were significantly different when they had a longer stay in the U.S., had been employed, had higher income, were Asian Indians, had better English-speaking skills, better health status, more knowledge of health system and health insurance, had higher satisfaction with the healthcare system, and when they were taking prescribed medications and having health insurance. The strongest association with experience of healthcare services was having health insurance with an adjusted odds ratio (OR) of 15.37 (95% CI 4.95-47.71, p<.001) and self-reported English proficiency (OR=1.99, 95% CI 1.00-3.96, p=.05). Conclusion: Intervention strategies to increase accessibility to healthcare services should focus on these significant predictors.