• Clinical and Experimental Reproductive Medicine
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• v.27 no.2
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• pp.165-172
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• 2000

Objective: In vitro fertilization (IVF) and a prolonging the time of culture may be helpful in establishing a viable pregnancy through a selection effect. Some embryos do not develop beyond the 4-cell stage and some may not develop to the blastocyst stage. We have evaluated the safety of SET and the outcomes of pregnancy. Methods: Sperms were treated with Ham's F-10 supplemented with 10% human follicular fluid (hFF). oocytes or fertilized oocytes were cultured in Dulbecco's Modified Eagle Medium (DMEM) with 10% or 20% hFF respectively. Up to five oocytes were inseminated with approximately 200,000 sperm cells/2 ml in each well. Fertilization was examined in the following morning and fertilized oocytes were co-cultured until embryo transfer. Vero cells for co-culture were prepared in Tissue Culture Medium - 199 (TCM-199) with 10% fetal bovine serum. At the two to four cell and blastocyst on day 2 and day 5, embryo and blstocyst grading were evaluated. Pregnancy rate was determined after transfer of human embryos at the two to four cell stage on day 2 (Group I) or subsequent transfer of embryos on day 2 and at the blastocyst stage on day 5 (Group II). For statistical analysis, Student's t-test and Chi-square (${\chi}^2$_test) were used. Results were considered statistically significant when p value was less than 0.05. Results: No differences was found in the fertilization between Group I (81.0%, 98/121) and Group II (81.8%, 180/220). In case of cleavage rate, no difference was found in Group I (95.9%, 94/98) and Group II (97.8%, 174/178). However, the rate of-clinical pregnancy was significantly higher (p=0.014) in Group II (66.7%, 12/18) than in Group I (26.3%, 5/19). Conclusion: The results of this study showed that SET is safe and effective, and significantly increases the pregnancy rate.

• Journal of Embryo Transfer
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• v.24 no.3
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• pp.177-182
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• 2009

This study was conducted to investigate the variation of growth characteristics and reproductive physiology in cloned Hanwoo male calves during growing stage. The hematological parameters, body weight, and plasma hormonal levels, birth to 12 months, were analyzed in the cloned calves (n=3). Differences among treatment means were determined by a student t-test. A probability of P<0.05 was considered statistically significant. The hematological parameters, such as white blood cell, red blood cell, and platelet, were not different in both normal and cloned calves. The difference of body weight, however, was significantly higher in the cloned calves, $5{\sim}6$ months (p<0.05) and $7{\sim}12$ months (p<0.01), than that of the comparators, respectively. The plasma IGF-1 level was statistically significant in the cloned calves, $5{\sim}10$ months, compared to that of the normal calves (p<0.05). However, the plasma testosterone level was not different in both normal and clone calves according to growing stage. Taken together, the cloned Hanwoo male calves are growing faster and maintaining a normal reproductive physiology.

• Journal of Korean Academy of Nursing
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• v.47 no.4
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• pp.526-539
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• 2017

Purpose: This study was undertaken to develop and test a mastery learning program of nursing skills for undergraduate nursing students. Methods: In this methodological study, first, the preliminary draft of a mastery learning program to provide training for nursing skills was developed based on Bloom's framework for mastery learning. Second, to test the developed program, a single-blinded, nonequivalent control group nonsynchronized study was conducted on 50 senior nursing students in a University selected by convenient sampling. Thirteen students were assigned to a control group; 13, 12, and 13 of them were assigned to intravenous therapy, transfusion, and patient transfer groups, respectively. The achievement levels and performance scores of the selected nursing skills were measured before and after the completion of the program in all the groups. Lastly, the final program was confirmed based on the results of the program testing. Results: Intravenous therapy, transfusion, and patient transfer were selected as essential nursing skills for the program based on the priorities rated by clinical instructors and staff nurses. The achievement levels of selected nursing skills were determined by Angoff scores. After participating in the program, the proportion of passers and performance scores of the nursing skills in the experimental groups were significantly higher than those in the control group. The final program was confirmed which included a diagnostic test, enrichment activities for the passers and three repetitions of corrective activities and formative assessments for non-passers. Conclusion: The results suggest that a mastery learning program for undergraduate students can lead to better improvement and performance of essential nursing skills.

• The Journal of Korean Association of Computer Education
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• v.17 no.1
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• pp.117-130
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• 2014

The purpose of this study is to provide useful knowledge for improving indicators that represent competitiveness and educational competency of the university by deriving a new pattern or the meaningful results from the data of information disclosure of universities using statistical analysis and data mining techniques. To achieve this, a model of decision tree was made and various factors that affect education/research performance such as employment rate, the number of technology transfer and papers per full-time faculty were explored. In addition to this, the cluster analysis of universities was conducted using attributes related to evaluation of university. According to the analysis, common factors affecting higher education/research performance are following indicators ; incoming student recruitment rate, enrollment rate, and the number of students per full-time faculty. In the cluster analysis, when performed by the entire university, the size, location of the university respectively, clusters are mainly formed by well-known universities, art physical non-science and engineering religious leaders training universities, and others. The main influencing factors of this cluster are higher education/research performance indicators such as employment rate and the number of technology transfer.

• Journal of Fashion Business
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• v.20 no.2
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• pp.165-180
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• 2016

Capstone design, is a heartfelt cooperation curriculum because the ultimate goal is to train people who already have the ability to complete the tasks of the job without retraining them in the field immediately after being hired. However, there is a need for the design study in the fashion industry where a variety of operating models could be tried; more specifically case studies than engineering. This study was designed to apply to the types of voluntary projects and industrial challenges linked to the different types of virtuous circle window systems over twice in two years. Result capitalization applied to different types of derived forms associated with start-up technology transfer form. In addition, start-up will be done in conjunction with student-centered forms of the participation of Cooperation Coordinator. This was weak in the form of technology transfer interventions which were made as a result of the overall involvement of the industry. In order to elicit the active participation of the industry it is expected that this system will have an ideal company to reflux. Therefore, reflux that created assets to the students, and the reflux of product design created by students in companies professor final a virtuous cycle system operating models that can derive enhancements accept feedback to both students and companies redefining the performing models It presented. This operating model is considered to be able to provide you with a sense of accomplishment and high experiential value to both students and professors, and the industry. In this study, experiments in environmental A Study, silseupbi no support will be given to alternatives to solve them.

• Korean Journal of Health Education and Promotion
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• v.17 no.2
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• pp.57-73
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• 2000

A study on drug abuse of young people who failed in college entrance examinations and preparing the next examination and those enrolled at colleges but trying to transfer to other colleges was conducted from February 3 to May 31, 1999 in order to determine current drug abuse status of them and factors affecting their behavior related to drug abuse. A total of 1,771 people were selected from college entrance preparation institutes in Seoul, Pusan, Taegu, Taejon and Kwangju and interviewed by using questionnaires. The results are summarized as follows; 1. 49.78％ of them experienced drinking, 22.8％ smoking, and 6.7％ drug previously. More males smoked cigarettes than females. The young in the age group of 25 to 29 years old, and the young living in small towns, and subjects who finished junior colleges and those without religions drank more than those in other categories. The subjects in the age group of 20 to 24 years old and those with one parent, and those living in small towns used more drugs than those in other categories. 2. 60.1％ of those with drug using experience used the drug in their or friends' homes. 53.6％ of them used drugs with their friends, junior or senior classmates. 36.6％ of them purchased drugs from drug stores. 76.0％ of them spent their pocket money for buying drugs. 3. The drugs (excluding alcohol and tobacco) they used were bond and butane gas (29.6％), stimulants (20.6％), marijuana 02.0％) LSD (4.8％), cocaine, heroine and opium (4.2％), and others (28.8％). 4. 21.5％ of those with drug using experience had detoxification treatment previously. The ajmor sufferings they experienced were distraction (42.6％), fear 01.7％), and others. 5. 51.0％ of the subjects experienced drug related health education in schools, and 14.6％ had that kind of education through social program. 6. 64.3％ of the subjects got information about drug abuse through mass media, 16.4％ through printed materials, and 11.4％ through public health professionals. 7. The knowledge level of drug abuse was 16.48:1:2.76 points out of 24 (68.6 points out of 100).

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.1
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• pp.122-128
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• 2014

The purpose of this study was to identify the influence of youth group activities experience to sociality development of middle school student. To achieve above study purpose, the subject of this study was selected 280 from middle school second-grade students(youth group activities participants 140, non-participants 140). Experience based activities were applied to the experimental group over 80 hours per year and the pre-post test was conducted using the sociality development inventory. The results of the data were analyzed by t-test using the SPSS(ver 18.0) program. The results were as follows: First, In the aspect of sociality development by youth group activities, the student participant showed somewhat significant differences compared to the non-participants. Second, considering the activity periods, the students with more than two-year experiences showed higher results than the ones with just one-year experiences. These results represent that various programs, which can develop the sociality, can be provided for youth when they join any group of activities in general and those programs are also very effective in developing the sociality of juveniles. Furthermore, It is suggested that youth group activities are a necessary element at the school education fields, which can solve the various problems caused by overemphasizing only the knowledge transfer, reinforced education of humanism and reduced school violence.

• Journal of the Korean Society of Earth Science Education
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• v.4 no.2
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• pp.89-101
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• 2011

Science, Mathematics, Engineering, and Technology (STEM) integrated education has been spotlighted as a new approach for promoting students' conceptual understanding and supporting their future career in STEM field. There is increasing evidence of the positive impact of using a whole design process that can be an example of STEM integrated activities to improve students' conceptual understanding and problem solving skills. However, there is a lack of information on how teachers should accomplish science and engineering integration activities in their classroom and what process they should pay attention. To answer this question, we research the relationship between an design process and students' conceptual understanding using an engineering design activity, called 'Save the Penguins', and study on how each step in an engineering design process in this activity enhance students' conceptual knowledge in science. We found that testing their prototypes and discussing with their peers were the most important process for students to understand and apply science concept for their design, even though the whole engineering design process (demonstration about radiation, discussion about examples in our lives, and testing and reviewing their prototypes, and making final design) helps the students understand the scientific concepts.

• Culinary science and hospitality research
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• v.6 no.2
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• pp.291-314
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• 2000

At present, the students majoring in tourism apprach theoretically and practically target human resource development which is blanceded between creativity and specialty. And yet, the initial step of on-the-job tranning has not been worked and the area of tourism and experience in this field are know as a beginning stage. This, this study is focusing on the on-the-job tranning in the area of tourism major in technical college. The issues and alternative solutions are as follows First, many student hope sutible training cost require. Second, An amount of subsidy for trainee is too low, and a trainee is used as substitution for regularem ployee's vacation during summer season and for beginning and end of year during winter season. Third, There is no clear linkage between job training and employment. Forth, many students enter a technical college due to learn professional technique and service, however, many other students go to a technical college as means of transfer to university, Since a tourism bussiness is predicted as a potential industry for the twenty-first century, besides a positive national economy and tourism business, the continuing and active supports and needed as follows First, An active support on tranning provided by tourism companies is required. Second, A continuos driving force and thorough management of job training by technical college and relevant major department are needed. Third, sutible traninging cost would be required. Forth, In order to achive a objectives and practical and effect ive job tranning, students majoring in tourism should enhance a service mind and manner.

• The Transactions of the Korean Institute of Electrical Engineers A
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• v.53 no.6
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• pp.324-333
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• 2004

This paper discusses the development of an educational web-based power flow program for undergraduate students. The interaction between lectures and users can be much enhanced via the web-based programs which result in the student's learning effectiveness on the power flow problem. However the difficulties for developing web-based application programs are that there can be the numerous unspecified users to access the application programs. To overcome the aforementioned multi-users problem and to develope the educational web-based power flow program, we have revised the system architecture, the modeling of application programs, and database which efficiently and effectively manages the complex data sets related to the power flow analysis program. The developed application program is composed of the physical three tiers where the middle tier is logically divided into two kinds of application programs. The divided application programs are interconnected by using the Web-service based on XML (Extended Markup Technology) and HTTP (Hyper Text Transfer Protocol) which make it possible the distributed computing technology Also, this paper describes the method of database modeling to handle effectively when the numerous users change the parameters of the power system to compare the results of the base case.