• 한국문화재보존과학회:학술대회논문집
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• 2005.11a
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• pp.207-212
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• 2005

• Proceedings of KHEA Conference
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• 1997.07a
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• pp.192-192
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• 1997

• Journal of Microbiology
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• v.38 no.2
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• pp.99-104
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• 2000

Hydrogen peroxide has been used in cleaning the piping of an advanced high-purity water system that supplies ultra-high purity water (UHPW) for 16 megabyte DRAM semiconductor manufacturing. The level of hydrogen peroxide-resistant bacteria in UHPW water was monitored prior to and after disinfecting the piping with hydrogen peroxide. Most of the bacteria isolated after hydrogen peroxide disinfection were highly resistant to hydrogen peroxide. However, the percentage of resistant bacteria decreased with time. The hydrogen peroxide-resistant bacteria were identified as Micrococcus luteus, Bacillus cereus, Alcaligenes latus, Xanthomonas sp. and Flavobacterium indologenes. The susceptibility of the bacteria to hydrogen peroxide was tested as either planktonic cells or attached cells on glass. Attached bacteria as the biofilm on glass exhibited increased hydrogen peroxide resistnace, with the resistance increasing with respect to the age of the biofilm regrowth on piping after hydrogen peroxide treatment. In order to optimize the cleaning strategy for piping of the high-purity water system, the disinfecting effect of hydrogen preoxide and peracetic acid on the bacteria was evaluated. The combined use of hydrogen peroxide and peracetic acid was very effective in killing attached bacteria as well as planktonic bacteria.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.374-376
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• 2018

In this study, we developed a mobile home robot using a face recognition method using a camera attached to a raspberry pie. It receives the real time image through the camera attached to the raspberry pie, recognizes the face of the person, and distinguishes the operation of the smart cool air temperature device according to the result. It is expected that the robot will be able to increase the energy utilization efficiency by allowing the robot to operate in cold and hot winds only where there is no human being, instead of operating the hot and cold air conditioner.

• Korean Journal of Community Nutrition
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• v.27 no.6
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• pp.492-502
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• 2022

Objectives: This study examines the foodservice status of kindergartens attached to elementary schools in Seoul. We further determine the perception of elementary school principals and kindergarten assistant principals on the foodservice management for kindergartens. Methods: This survey was conducted from July 17 to 23, 2019, enrolling 207 kindergartens attached to elementary schools in Seoul. Questionnaires were sent to principals of elementary schools and assistant principals of kindergartens, and the data obtained from 89 kindergartens were included in the analysis. The questionnaire consisted of four parts: general information on subjects, foodservice management status, foodservice management status during elementary school vacations, and the perception of principals of elementary schools and assistant principals of kindergartens on foodservice management. Data are presented as frequency and percentage or mean and standard deviation. Statistical comparison between principals of elementary schools and assistant principals of kindergartens was conducted by paired t-test, chi-square test, and Pearson's correlation analysis. Results: A separate menu (10.1%) or recipe (20.2%) that considers preschooler characteristics was rarely used for foodservice at kindergartens attached to elementary schools. Most kindergartens did not have a separate dining space (3.4%) or a dedicated cook (93.3%). Although most kindergartens (92.1%) had operational foodservice during elementary school vacations, non-professional staff and non-nutrition teacher were mainly in charge of organizing the menu and purchasing ingredients (34.1% and 41.5%, respectively). The rate of using a contract catering company (28.0%, 23.2%) was also high. Both elementary school principals and assistant principals of kindergartens showed a high perception of the necessity for providing responsibility allowances for nutrition teachers and improving the cooking environment for kindergartens during elementary school vacations. Conclusions: There is a need for policies and administrative support measures to improve the quality of foodservices for kindergartens attached to elementary schools.

• East Asian mathematical journal
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• v.31 no.4
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• pp.459-481
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• 2015

In this study, we investigated whether the theorem is established even if we replace a 'square' element in the Euclidean proof of the Pythagorean theorem with different figures. At this time, we used different figures as equilateral, isosceles triangle, (mutant) a right triangle, a rectangle, a parallelogram, and any similar figures. Pythagorean theorem implies a relationship between the three sides of a right triangle. However, the procedure of Euclidean proof is discussed in relation between the areas of the square, which each edge is the length of each side of a right triangle. In this study, according to the attached figures, we found that the Pythagorean theorem appears in the following three cases, that is, the relationship between the sides, the relationship between the areas, and one case that do not appear in the previous two cases directly. In addition, we recognized the efficiency of Euclidean proof attached the square. This proving activity requires a mathematical process, and a generalization of this process is a good material that can experience the diversity and rigor at the same time.

• Journal of the Korean Home Economics Association
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• v.19 no.4
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• pp.85-96
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• 1981

The author aimed at clarifying the background variables that influence on the interpersonal behavior of youth, and getting the data for comprehensive guidance programs of youth in high schools and industries. In this study the author samples academic high school boys and girls, attached high schools boys and girls to industries and laboring youths. the Scale of interpersonal behavior was administered to the youths sampled as above and the data were analysed accounting to groups, sex, and religious. The results of the study are as follows. 1. The most important factor influenced the interpersonal behavior of youth was identified as social environment. That is, the youths in industries or students attached high school to industries showed more prominent characteristics in interpersonal behavior patterns. Then industrial environment effects more on the youth's behavior than school environment. 2. Sex differences were identified is in interpersonal behavior of youths. Boys are more managerial and autocretice, more cooperative, more docile, more self-efacing, more aggressive and more aggressive and more resistant than girls. But in christian group there found no sex differences is interpersonal behavior. 3. Religion was thought to be one of the most important influencing factor to the interpersonal behavior .But in this study there found no realistic effects, of religion on the interpersonal behavior as much as though of. 4. But according to the denominations, christianity was found to influences more on the interpersonal behavior of youths than Buddhism.

• Research in Mathematical Education
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• v.10 no.1 s.25
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• pp.79-87
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• 2006

In this paper we investigated the influence on school students when they use graphing calculator for exploration, including their experience of exploration, their ability and attitudes. After using graphing calculator based mathematics exploration course, two students were interviewed and 162 students who finished the course in these years were investigated. The results show that graphing calculator is a useful tool to develop students' explorative ability. Most of students had positive attitudes to and were interested in making use of graphing calculator.

• Journal of Korean Academy of Nursing
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• v.4 no.1
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• pp.81-94
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• 1974

The trend in modern nursing is toward the performance of comprehensive nursing carp. Airer liberation of 1945, nursing education in Korea has made rapid progress. The System of nursing education in Korea has come to the professional school of nursing and collegiate program from high School level. Under these situations, the improvement on curriculum of nursing education is necessary. This paper is a basic study for improvement of curriculum in nursing education. 1. The aims of this study are; 1) to analyze and compare the objectives of nursing education in Korea and U.S.A 2) to analyze and compare the differences in curriculum of nursing education between Korea and U. S. A. 3) to find problems in nursing education of Korea 2. The curricula and bulletins from 2 colleges.9 departments, 12 professional schools and 18 attached schools of nursing in Korea and 9 attached schools of nursing and 17 colleges in U. S. A. were collected for this study. 3. The results of this study: 1) Most of Korean programs lack for the student to make understand respect the human in the statement of their objectives. 2) Most of Korean programs prepare their graduate to function as a contributing member of the-health team in the hospital and the community, while the graduate of the American attached schools is prepared to function in general staff nursing and team leadership positions in hospitals. 3) Most of Korean programs of nursing education hays low distribution of credits in supporting sciences. (especially sociology and psychology) 4) Too much proportion of time in attached schools and less and less proportion of time in professional schools is distributed in clinical practice area. 5) In our collegiate programs. too much proportion of time is distributed in adult nursing and less proportion of time in Psychiatric nursing. 6) Professional area on curriculum of attached schools is divided into many detailed subjects. 7) A large number of credits in total are distributed at the first year in attached schools.

• Journal of Adhesion and Interface
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• v.13 no.1
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• pp.17-23
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• 2012

A fragrant microcapsule was prepared for use by students to reduce the stress of taking examinations. Rosmarinic acid was used as a fragrant oil which had the effect of relaxing stress, polycaprolactone (PCL) was used as a capsule wall material, and poly(vinyl alcohol) (PVA) as a stabilizer. The solvent evaporation method was used to form the microcapsule. The microcapsules were prepared by changing the stirring rate, the concentration of the stabilizer, and the molecular weight of PCL. The shape of the microcapsule was characterized by scanning electron microscopy (SEM). The size of the microcapsule was reduced by increasing the stirring speed. The release rate of rosmarinic acid was decreased when the higher molecular weight PCL was used. When the prepared microcapsule was tested in an aromatherapy class, the microencapsulated fragrant oil had a longer release time than the original fragrant oil. The study data showed that this fragrant oil was effective for increasing concentration ability, reducing stress, increasing digestive power, and increasing memory for the students.