• Title/Summary/Keyword: ADS 1.2

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Effect of the Addition of Aluminium Distearate on Manufacturing of $UO_2$ Nuclear Fuel (Aluminium Distearate 첨가가 $UO_2$ 핵연료 제조에 미치는 영향)

  • 박지연;정충환;김영석
    • Journal of the Korean Ceramic Society
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    • v.29 no.8
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    • pp.609-616
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    • 1992
  • This study has been investigated on the milling of Aluminium Distearate (ADS) powder and characteristics of the ADS-doped UO2 pellets. As-received ADS powder of the agglomerated particles has not shown any milling effect because of heat generated during planetary milling. But the use of coolant to effectively remove heat generated during milling has been found an effective way in breaking up the agglomerates of ADS powder. The green density of the UO2 pellet decreases with the amount of ADS powder doped. Therefore, in order to get the sintered density of 95% pellet decreases with the amount of ADS powder doped. Therefore, in order to get the sintered density of 95% theoretical density, the 200 ppm ADS-doped UO2 pellet has to be pressed under higher compacting pressure of 3500~4000 kgf/$\textrm{cm}^2$ compared with the ADS-undoped UO2 pellet pressed under around 3000 kgf/$\textrm{cm}^2$. The ADS-dpoed UO2 pellet with even relatively low sintered density of 10.27 g/㎤ exhibits open porosity of 1% while open porosity of the ADS-undoped UO2 pellet is reduced to around 1% only after its sintered density increases to 10.43g/㎤. It is, therefore, concluded that doping of ADS powder significantly contributes to the decrease in open porosity of the UO2 pellet. The dilatometry of the ADS doped UO2 pellet shows the sintering rate curve with the bimodal mode, which could be attributed to a phase reaction between UO2 and ADS. The X-ray diffraction analysis indicates that there occurs not any new phase formed but the shift of the peaks. It would be expected that a phase reaction resulting in solid solution would happen in the temperature range of 130$0^{\circ}C$ to 150$0^{\circ}C$ between UO2 and ADS.

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The Changing Advertising Campaigns of Jeans Ads in 1990's (1990년대 Jean 광과의 변화 - 광고유형과 jean의 미의식을 중심으로 -)

  • 김미영;이충연
    • The Research Journal of the Costume Culture
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    • v.8 no.6
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    • pp.791-805
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    • 2000
  • The purpose of this study is to analyze the jeans advertising campaigns of the 1990's in South Korean magazine advertisements and their relation to the beauty trends of the 1990's in South Korea. There are three significant and varying periods in the 1990's. Each period will be dissected into four categories. The four categories are 1. Catchphrases 2. Pose selection of the models 3. Selection of models 4. Overall images and themes of the ads. The results are as follows : 1. 1990∼1993 ; Youth & Freedom From 1990 to 1993, jean ads emphasized the catchphrsase and the dynamic pose more and used the Korean model. The ads displayed youthful energy and the freedom of the younger generation. 2. 1994∼1997 ; Sex Appeal From 1994 to 1997, the second transition in jeans advertisements focus shifted from the youthful images of the early 90's to more sexually oriented ads. In terms of model selections and pose, Caucasian models instead of Korean models, and static pose were used more. The ads emphasized the image more than the catchphrase. 3. 1998∼1999 ; Diversity of Individuality & Naturalism During 1998 to the present day, the jeans ads no longer focused on groups but the diversity of individuality. The other focus of ads was the naturalism and the harmony with the nature. Both the static and dynamic pose, Korean model, and the image ads were used.

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A Practical Guide for Clinical Use of Antidepressants with Particular Reference to Major Depression (항우울제의 임상사용을 위한 실제적 지침 : 주요 우울증을 중심으로)

  • Yoon, Jin-Sang
    • Korean Journal of Biological Psychiatry
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    • v.1 no.1
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    • pp.17-30
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    • 1994
  • Several different classes of antidepressants(ADs) with newer drugs becoming available have been used for the phamacological management of a broad spectrum of mental disorders, among which depressive disorder is most commonly indicated. Successful clinical use of ADs requires a complete understanding of the psychopharmacological properties of ADs and on accurate knowledge of patients, characteristics based on clinical experience and theoretical framework. This paper aims at providing some practical information on the clinical use of ADs to assist clinicians in treating patients with major depression. The author describes (1) different classes of ADs and their presumed mechanisms of action, (2) clinical characteristics of ADs focusing on side-effect profiles, (3) some issues arising during the treatment course such as : a) pretreatment tasks, b) choice of ADs, c) therapeutic drug dose and monitoring of drug concentration, d) three stages of treatment and e) strategies in refractory depression and (4) ADs in special patient groups.

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Reactor Physics Study Related to Subcriticality of Accelerator Driven System By AESJ/JAERl Working Party

  • Iwasaki, Tomohiko
    • Proceedings of the Korean Nuclear Society Conference
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    • 2002.05a
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    • pp.66-66
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    • 2002
  • Under Atomic Energy Society of Japan (AESJ) and Japan Atomic Energy Research Institute (JAERO, a Working Party on Reactor Physics of Accelerator-Driven System (ADS-WP) has been set since March 1999 to review and investigate special subjects related to reactor physics research of Accelerator-Driven System (ADS). In the ADSWP, the extensive and aggressive activity is being made by 25 professional members in the field of reactor physics in Japan. The ADS is now studying three subjects related to subcriticality of ADS; (1) calculation accuracy of sub criticality on ADS, (2) critical safety issues of ADS, and (3) theoretical review of subcriticality and its measurement methods. This paper describes two topics related to the subjects (1) and (2); one is an analysis of maximum reactivity potentially inserted to a subcritical core and the other is a benchmark proposal for checking calculation accuracy of sub criticality on ADS. The full specification of the calculation benchmark will be supplied by June 2002. Researchers from overseas, especially from Korea, are welcome to join this benchmark

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Knowledge, Experience, and Attitudes of Nurses at Long-Term Care Hospitals regarding Advance Directives

  • Go Eun, Park;Nae Young, Lee
    • Journal of Hospice and Palliative Care
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    • v.25 no.4
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    • pp.139-149
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    • 2022
  • Purpose: The purpose of this study was to promote awareness of the need for advance directives (ADs) and to provide baseline data for the development of a nurse training program about ADs. Methods: Nurses at eight long-term care hospitals in Busan and South Gyeongsang Province (N=143) were recruited using the random sampling method from December 2018 to January 2019. Data were obtained using a structured self-reported questionnaire to assess their knowledge, experience, and attitudes regarding ADs. Data were analyzed in SPSS 22.0 using descriptive statistics, the t-test, analysis of variance, the Scheffé test, Pearson's correlation coefficient, and stepwise multiple regression analysis. Results: The mean scores were 7.79±1.39 points for knowledge, 1.92±2.00 points for experience, and 2.80±0.24 points for attitudes regarding ADs. Knowledge and experience (r=0.32, P<0.001) had a positive correlation with knowledge and attitudes (r=0.17, P=0.39). Conclusion: According to the results, nurses generally had a high level of knowledge regarding ADs, which resulted in a positive attitude toward ADs. However, they had little experience with ADs. Therefore, nurses' must develop both direct and indirect experience with ADs using a practical training program to strengthen their clinical competency regarding ADs.

Knowledge and Attitudes toward Advance Directives among Middle-Aged Women

  • Choi, Ji Won;Rhee, Yong Joo
    • Journal of Hospice and Palliative Care
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    • v.24 no.2
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    • pp.74-84
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    • 2021
  • Purpose: This study investigated knowledge of and attitudes toward advance directives (ADs) among middle-aged women in South Korea, their willingness to write ADs in the future, and the factors related to knowledge of and attitudes toward ADs. Methods: Data were collected using a self-administrated questionnaire completed by 154 middle-aged women aged 50 to 64 from February to March 2020. The questionnaire asked about participants' knowledge of and attitude toward ADs, willingness to write ADs in the future, experiences with life-sustaining treatment within their families, experience making decisions about life-sustaining treatment, and demographic characteristics. Results: Scores for both knowledge of and attitude toward ADs were relatively high. About 60% of participants gave wrong answers when asked if attorneys were required for writing ADs. A higher knowledge score was significantly associated with a higher attitude score (r=0.227, P<0.01). The women were more likely to be willing to write ADs in the future when they reported a middle income level rather than a lower income level (odds ratio [OR]=5.952, P<0.01), considered themselves unhealthy (OR=5.873, P<0.01), and graduated college or higher (OR=4.096, P<0.05). Furthermore, women who thought that ADs would have an impact on treatment (OR=1.869, P<0.05) and on their families (OR=1.447, P<0.05) were more likely to be willing to write an AD. Conclusion: This study shows that wrong information about ADs persists among middle-aged women, and significant factors associated with knowledge of and attitude toward ADs were identified. Targeted education programs about ADs need to be developed for middle-aged women.

Factors that Influence Attitudes toward Advance Directives among Hemodialysis Patients

  • Minhee Cho;Hyunjoo Na
    • Journal of Hospice and Palliative Care
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    • v.27 no.1
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    • pp.11-20
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    • 2024
  • Purpose: Advance directives (ADs) are legal documents that outline a person's preferences or decisions regarding end-of-life care ahead of time. In Korea, there is insufficient awareness and knowledge about ADs among patients undergoing hemodialysis. This study explored the relationship between perceptions of a good death, knowledge about ADs, and attitudes toward ADs in this patient population. Methods: This cross-sectional survey enrolled 119 hemodialysis patients from a secondary hospital in 2021. The participants completed a self-administered questionnaire, and the data were analyzed using the t-test, analysis of variance, Pearson correlation coefficients, Spearman rank correlation coefficients, and multiple regression analysis. Results: The average score for perceptions of a good death among hemodialysis patients was 2.80 out of 4, with clinical symptoms identified as the most critical factor. The average scores for knowledge about ADs and attitudes toward ADs were 5.69 out of 9 and 2.79 out of 4, respectively. There was a positive correlation between perceptions of a good death and attitudes toward ADs (r=0.34, P<0.001), as well as between knowledge about Ads and attitudes toward ADs (r=0.19, P=0.037). Factors influencing attitudes toward Ads included employment status (β=0.22, P=0.011), education level (β=0.22, P=0.013), and perceptions of a good death (β=0.29, P=0.001), which accounted for 24.8% of the variance in attitudes toward ADs. Conclusion: A positive perception of a good death among patients undergoing hemodialysis was associated with a positive attitude toward ADs. Educational programs are needed to improve individuals' understanding of a good death and encourage the development of end-of-life care plans.

A Study on Consumers' Advertising Discriminatory Competencies and the Related Factors (소비자의 광고판별능력과 관련요인에 관한 연구 -기만광고판별을 중심으로-)

  • 이기춘
    • Journal of the Korean Home Economics Association
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    • v.28 no.2
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    • pp.91-106
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    • 1990
  • This study focuses on consumers' advertising discriminatory competencies and the influencing facors. So the objects of this study are as follows : 1) to identify the overall level of advertising discriminatory competencies. 2) to examine if consumer attitude variables have significant effects on the ads. discriminatory competenceis. 3) to examine if the frequencies of contacting advertising variable have significant effects on the ads. discriminatory competencies. 4) to examine if socio-economics variables-age, educational level, monthly family income, occupational status-have significant effects on the ads. discriminatory competencies. 5) to find out the independent influence of variables related to the ads. discriminatory competencies. For this purpose, a survey was conducted using questionaires and advertisement papers. The data used in this study included 194 Homemakers living in Seoul. The ads. used in this study included ads. of diary products like foods, drinks, medicine, cosmetic, detergent in TV, radio, newspaper and magagine. Statistics were Frequency Distribution, Mean, percentile, ANOVA, Scheff -test, Pearsons' Correlation, Multiple Regrassion Analysis. Major findings were as follows : First, in 26 items(70%) of 37 items measured consumers' ads. discriminatory competencies, the rate of right answer was below 50%, so over the half of consumers were misleaded by the deceptive ads. Second, consumers' ads. discriminatory competencies differed significantly according to consumer attitude variables but no according to the frequency of contacting advertising. Third, according to socio-demographic variables-age, educational level, monthly family income, occupational status-advertising discriminatory competencies differed significantly. In group of lower age, higher educational level, higher income and professional occupation status, the level of ads. discriminatory competencies were high. Forth, the most influencing variabel on ads. disciriminatory competencies were eudcational level and in turn general attitude toward ads., attitude toward consumerism. This three variables explain 22.9% of dependent variable's variance. From these findings, the following suggestions are made, First, the consumer education offering informations and learing practical ads. discriminatory competencies should be conducted for all consumers wheather they are educated or not. Also the education to improve the consumer attitude must be. Second, considering misleading level, the business must make the regulatory standards and reinforce the regulation voluntarily, and by enforcing the regulation of ads. and deciding more diverse, objective and exact standards, the government should keep the consumer's right to know.

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High School Girls' Attitudes toward Apparel Advertisement in Magazines according to Their Physical Self-Concept

  • Hwang Choon Sup;Choi Mihyun
    • The International Journal of Costume Culture
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    • v.8 no.1
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    • pp.11-22
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    • 2005
  • The present study attempted to analyze the behavioral patterns and attitudes of high school girls toward apparel ads in magazines in relation to their physical self-concept. The study used a self-administered questionnaire. The sample consisted of 419 students at 3 girl's high schools located in Seoul. Likert scales were used for most measures with 1=never or very unimportant and 5=always or very important. Physical self-concept was measured on the basis of W S. Jung's Standardized Self-concept Test and Tennessee Self-concept Scale. Percentage, t-test, and Chi-square were used for the analysis of the data. Results are as follows: (1) Those with a high sense of physical self-concept read more magazines. (2) Those with higher sense of physical self-concept showed greater interest in magazine ads, consulted magazines for fashion trends, found ads more useful, and more often expressed satisfaction with the ads, than the lower self-concept group. (3) Advertisers should attempt to gain a deeper understanding of the socio-psychological characteristics of their readership as self-concept appeared to be related to several magazine readership attitudes and behaviors. Apparel ads targeting high school girls should consider the importance of company ads.

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Holistic Thinkers' Attitude toward the Emotional Ads. : Focused on Hotel Brands' Extension Ads. (종합적 사고자의 감성적 광고에 대한 태도 : 호텔 브랜드확장광고를 중심으로)

  • Kim, Gwi-Gon;Do, Hyun-Ok
    • Journal of Digital Convergence
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    • v.10 no.3
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    • pp.179-189
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    • 2012
  • The purpose of this study examines the influence of brand concepts(symbolic vs. functional) and thinking styles(holistic vs. analytic) on the attitude toward extension ads.(rational/emotional) and product. The moderating effect of thinking styles was also tested. The results of this study are as follows: I) Brand concepts of parent brand had a significant effect on the attitude toward extension ads.(symbolic: no differences between rational and emotional ads., functional: rational ads. > emotional ads.) and extension product. 2) Thinking styles of consumers also did.(holistic: no differences between rational and emotional ads., analytic: rational > emotional ads.) and extension product. 3) The moderating effect of thinking styles was(rational ads.: symbolicfunctional).