• Reproductive and Developmental Biology
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• v.33 no.1
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• pp.25-28
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• 2009

This study was carried out to investigate the general characteristics, such as volume, pH, sperm motility and sperm concentration of the semen collected from Beagle dogs (age $24{\sim}48$ months, weight $10{\sim}15\;kg$) by using the method of digital manipulation of the penis, and the effect of preservation temperature and time on motility of fresh semen. Multiple ejaculates were collected from 4 male Beagles. The average volume, pH, motility and sperm concentration of the second fraction (contained with small volume of the third fraction) per ejaculation were $2.94{\pm}0.24(SD)\;ml$, $6.43{\pm}0.42(SD)$, $97.04{\pm}3.50(SD)%$ and $1.67{\pm}0.23(SD){\times}10^8\;cells/ml$, respectively. Average semen volume per ejaculate, semen pH, sperm motility and sperm concentration of the first fraction from the ejaculate were $1.24{\pm}0.20(SD)\;ml$, $6.03{\pm}0.26(SD)$, $1l.30{\pm}4.02(SD)%$ and $7.25{\pm}1.02(SD){\times}10^5\;cells/ml$. Those of second fraction were $2.52{\pm}0.32(SD)\;ml$, $6.32{\pm}0.31(SD)$, $96.25{\pm}3.52(SD)%$ and $2.35{\pm}0.35(SD){\times}10^8\;cells/ml$. Those of third fraction were $2.71{\pm}0.27\;(SD)\;ml$, $6.52{\pm}0.20(SD)$, $95.65{\pm}2.78(SD)%$ and $5.72{\pm}0.29(SD){\times}10^7\;cells/ml$. Motility of semen was higher at $17^{\circ}C$ preservation temperature than $5^{\circ}C$ or $36^{\circ}C$ during preservation period. When preservation temperature was $17^{\circ}C$, motility was $96.54{\pm}2.05(SD)%$ at 1 h, $90.20{\pm}3.90(SD)%$ at 6 h, $89.05{\pm}2.01(SD)%$ at 12 h, $78.21{\pm}3.50(SD)%$ at 18 h, $45.24{\pm}6.25\;(SD)%$ at 24 h and $30.75{\pm}17.24(SD)%$ at 30 h, respectively.

• Cartoon and Animation Studies
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• s.47
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• pp.295-333
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• 2017

This study is a basic study to prepare policies related to selecting media to be included in textbooks. Researchers looked at previous studies focusing on how media affect children's and adolescent's emotions according to their developmental stages. Researchers also wanted to identify how the media is related to student emotions, health, and educational effectiveness. The researchers then examined a wide range of domestic media review and rating criteria, and argued that it is necessary to institutionalize the rating system of media at national level policy level. Based on the previous discussion, the researchers made seven suggestions. First, it is necessary to specify media selection criteria in the guidelines for issuing textbooks at the national level. Second, guidelines are needed to help review the political neutrality and human rights aspects of the media for inclusion in textbooks. Third, media selection guidelines in textbooks should be detailed with reference to categories and age based criteria of domestic and foreign media rating system. Fourth, the media rating system should be applied flexibly if there is a clear educational purpose. Fifth, institutional support is needed for setting guidelines for media collection of textbooks. Sixth, media experts should participate in the whole process of textbook development. Seventh, educational programs should be implemented to support teachers to use self directed learning by using educational media in classroom instruction.

• Korean journal of applied entomology
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• v.24 no.1 s.62
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• pp.11-14
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• 1985

Some experiments were conducted to evaluate the aphidivorous activity of coccinellid beetle, Harmania axyridis Pallas. Experiments were carried out using with laboratory reared beetles and two aphid species(Aphis gossypii and Myzus persicae). Factors referred in the study of aphidivorous activity were the age of beetle, aphid species, temperatreu and illumination time. The aphidivorous activity was greatly different in relation to aphid species, developmental stages of the beetle, and the temperature. The 3rd and 4th instar larvae consumed more aphids than the 1st and 2nd instar larvae. Though the beetles consumed more number of cotton aphid, total weight of aphids consumed the more or less the same. Aphidivorous activity of the 1st to 4th instar larvae increased with a rise in temperature and adult activity was relativel high at $20^{\circ}C$ and low at $15^{\circ}C\;and\;30^{\circ}C$. The aphidivorous activity of the beetles was not influenced by the illumination period under the conditions given in this experiments, however, seem to require further study.

• Journal of the korean academy of Pediatric Dentistry
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• v.32 no.1
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• pp.109-118
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• 2005

In the field of pediatric dentistry, comparison and analysis of cephalogram values of children are important fir evaluation of growth and development, and are essential to evaluate the craniofacial form and growth pattern for early diagnosis of malocclusion. For this, cephalographic norm values are important, but not many studies on the primary dentition exist. To compare the past norm values of normal occlusion in the primary dentition with current norms, preschool children, 4 to 5 years of age, with normal occlusion in the primary dentition who visited our hospital were examined. Among these children, 46 children with normal facial form and developmental status were chosen for evaluation of cephalogram values. The following results were as follows: 1. For skeletal values, the angular values showed no significant differences between males and females, and the linear values were generally greater in males than females. 2. SNA was $81.3^{\circ}$, SNB was $76.6^{\circ}$ and ANB difference was $4.7^{\circ}$. 3. The ratio for Mandibular body length to Anterior cranial base length was 0.9 : 1 for both male and female and the ratio for posterior facial height to anterior facial height was 61.4 % for male, 62.0 % for female. 4. For dental values, IMPA was $84.2^{\circ}$ and UA to SN was $90.8^{\circ}$. 5. The upper lip to Ricketts esthetic line was positioned 2.6 mm anteriorly, and the lower lip to Ricketts esthetic line was positioned 2.5 mm anteriorly.

• Journal of the korean academy of Pediatric Dentistry
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• v.35 no.4
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• pp.731-736
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• 2008

Odontogenic keratocyst is classified as a developmental odontogenic cyst and is believed to arise from cell rests of the dental lamina. It accounts for 3% to 11% of all jaw cysts and they occur twice as often in the mandible as in the maxilla. Histologically, the cysts are lined by stratified, keratinizing, squamous epithelium. Daugther cysts or microcysts are often observed microscopically. The recurrence rate has been reported variously, but is known by its high recurrence rate. These lesions are more common in males than in females, occur over a wide age range and are typically diagnosed during the 2nd and 3rd decade. The diagnosis depends on the cyst’s microscopic features and is independent of its location and radiographic appearances. This cyst is a radiolucent lesion that is often multiloculated, has a smooth or scalloped border. The cyst is characteristically located in the body and ramus of the mandible, and often occurs in conjunction with an impacted tooth. This case report describes an odontogenic keratocyst on the lower right molar area of an 8-year-old girl. The cyst was removed under the general anaesthesia, and is being checked regularly for any recurrences.

• Journal of the korean academy of Pediatric Dentistry
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• v.45 no.2
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• pp.257-264
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• 2018

Osteopetrosis is characterized by impaired osteoclast function and increased bone density. Infantile osteopetrosis is a severe form of the disease and has characteristics such as diffusely sclerotic skeleton, pancytopenia, cranial nerve entrapment, infection susceptibility, and abnormal craniofacial appearance. Patients with infantile osteopetrosis often experience developmental delay, and may have a short life span. A 14-month-old girl with osteopetrosis presented to the department of pediatric dentistry. Incipient caries on deciduous incisors were observed. The patient revisited 4 years of age. Besides medical problems, oral complications such as growth retardation, narrow upper arch, crowding, dental caries, and abnormal tooth development were observed. After consultation with her pediatrician, dental treatments were performed on the deciduous molars under sedation after a prophylactic antibiotic injection. At a periodic follow-up, multiple deciduous teeth were treated and extracted, and oralrehabilitation with a removable partial denture was initiated. Patient with osteopetrosis are highly susceptible to infection because of their compromised immune system and problems associated with wound healing that lead to osteomyelitis or sepsis development. Active participation in dental care for sugar intake management and proper oral hygiene are obligatory.

• Child Health Nursing Research
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• v.9 no.3
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• pp.309-322
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• 2003

Purpose: This study was carried out to show the parental child-rearing attitudes perceived by daughters(woman college students), who were in the process of pursuit of resonable values, ethics and preparing for marriage and settling down, and another purposes were to help them to have positive attitudes toward their child-rearing in the future and set up preliminary parenting education program. Method: The subjects were 120 woman college students who were freshmen to junior in one university in Seoul. Using the self-report questionnaire, data were collected from December in 1999 to March in 2000. The contents which subjects wrote down were categorized by content analysis method. Result: 1) The age range of subjects were 19-25 years old and main rearer was mother(85.84％). 2) The perception of parent's child-rearing by subjects were revealed 555 statements and then tied together 50 themes: 'emphasizing on studying hard'(8.3％), 'doing by oneself'(5.6％), 'sternness'(5.2％), 'respect of personality'(4.5％), 'eagerness'(4.0％), 'humanity education'(4.0％), 'moderating in daily living'(4.0％), 'propriety education'(3.8％), 'sacrificing for children'(3.6％), 'expectation'(3.2％), 'concerning'(3.1％), 'parent-centered'(3.1％), 'giving a free hand'(2.9％), 'sharing with'(2.9％), 'consideration'(2.7％), 'over-protectiveness'(2.3％), 'hostile attitude' (2.2％), 'corporal punishment'(2.2％), 'expression of parental love'(2.0％), 'encouragement'(1.8％), 'family-centered' (1.8％), 'treating fairly'(1.6％), 'offering live experiences'(1.6％), 'exacting obedience'(1.62％), 'exemplary parental role' (1.6％), 'sexual discrimination'(1.6％), 'cooperation'(1.4％), 'giving favors'(1.4％), 'indifference'(1.4％), 'understanding' (1.3％), 'confidence'(1.3％), 'intimacy'(1.3％), 'pursuit of health'(1.3％), 'warm-hearted'(1.1％), 'stinginess'(1.1％),'broad-mindedness'(0.7％), 'granting'(0.7％), 'interfering'(0.7％), 'reproach'(0.7％), 'distinction of sex in household affairs'(0.7％), 'help'(0.5％), 'preparing for the future'(0.5％), 'disregarding'(0.5％), 'making environment'(0.4％), 'bringing up a child personally' (0.4％), 'comparing'(0.4％), 'religious life'(0.4％), 'good deed'(0.4％), invasion of privacy' (0.2％), 'controlling desire'(0.2％). 3) 50 themes were categorized by 18 categories once more: 'control' (13.2％), 'crazy for education'(12.3％), 'endeavoring'(8.6％), 'autonomy'(8.5％), 'home education'(7.7％), 'esteem' (6.67％), 'support'(6.67％), 'pursuit of healthy daily life'(5.6％), 'earnestness'(5.4％), 'disregarding personality'(5.4％), 'emotional bonding'(3.2％), 'imposing a burden'(3.2％). 'inhospitality'(3.1％), 'acceptance'(5％), 'discrimination'(2.3％), 'mature parenthood'(1.8％), 'strengthening family tie'(1.8％), 'psychological intimacy'(1.1％). 4) On the basis of this study, 3/5 of subjects(61.2％) perceived their parents had mature and autonomous child-rearing attitudes, and on the other hand 2/5(39.5％) of them perceived controlling, just forcing to work harder and personally disregarding attitudes. Conclusion: So we need to offer them nursing implementation such as preliminary parenting education program and parenting consulting like to strengthen positive perception and help improving in realistic, developmental child-rearing attitudes.

• Child Health Nursing Research
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• v.20 no.4
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• pp.264-274
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• 2014

Purpose: The purpose of this study was to analyze papers on child rearing in Korea and to suggest future research and nursing practice directions for child rearing. Methods: An on-line search via 5 web sites yielded 201 research papers. The analysis of key concepts was based on the attributes of parenting and type of knowledge held by the parents. Results: The research papers found in the search were 27.3% experimental and 72.7% non-experimental. Among the participants, 77.0% of parents raising the child were mothers and the children were mostly young children under the age of one year. Types of knowledge related to child rearing varied widely, but explanatory knowledge (55.2%) was the most common, followed by prescriptive knowledge (30.0%) and descriptive knowledge (14.8%). For attributes of parenting, reaction to parenting (49.9%) followed by parenting behavior/practice (43.1%) was most common. Conclusion: Findings of this study indicate that further research is necessary regarding fathers and surrogate caregivers and on prescriptive knowledge for health promotion of children at different developmental stages. Also the results suggest a need for research toward developing child care policies.

• KOMUNHWA
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• no.69
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• pp.63-89
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• 2007

The Archaeological sites of so called Round Clay Rim Pottery (Jeomtodaetogi : 점토대토기) culture in Kangwon region have been rarely excavated in proper form. Since most cases belong to those of ground surface gatherings, it is difficult to certify the nature and the association with other artifacts. Therefore, researches on that culture have been limited to simply set the chronological order in the Bronze Age in realtion with the Plain Pottery culture. However, a comparative study trying to explain the Round Clay Rim Pottery culture in both Yeongseo(영서) and Yeongdong(영동) has become possible thanks to recent excavation results from the sites of Chilgeon-dong(칠전동) in Chunchon City(춘천시) and Songrim-ri(송림리) in Kangneung City(강릉시), for example. Certain difference can be observed in form and amount of artifacts in between Yeongseo and Yeongdong. Such difference can be seen as individual localization in different places diffused from a common source, rather than showing different stages of unilineal developmental process of one culture. The Round Clay Rim Pottery culture seems to have been coexisted with the Rim-Perforated Pottery(공렬토기) and Dolmen(지석묘) culture. According to the radiocarbondatings, the upper time limit of the Round Clay Rim Pottery culture goes back considerably beyond the alleged upper limit of either the late fourth century or the second century B.C.. However, both cultures absorbed into the Iron Culture during the same period.

• 한국벤처창업학회:학술대회논문집
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• 2007.11a
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• pp.143-174
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• 2007

The objective of Starts-up education rears leading company that minimize a risk & connect them with successful idea. Internet Starts-up education is serviced in public & civil parts, it is insufficient to reach successful Starts-up support. This study is targeting on review the present condition of the Internet Starts-up education, research which it sees Internet Starts-up education actual condition investigation through investigation student of education satisfactorily and education contents and the plan to grope an Starts-up education progress coat problem and developmental plan it did. The current events point which has become research result escape first, age of the students of education, followed in educational background and, education motive and education experience presence education satisfactory boat song it appeared in these demand different, base grudge the form which is various it fixed and the education was demanded. Second, currently the department of pedagogy joining in establishment leader against the technical element which is advanced swip, the education reinforcement against an enterprise accomplishment ability back human factor, an enterprise propulsion environment and an enterprise item back enterprise environment element was demanded. Time after support and consulting, completion lifestyle community construction, completion lifestyle for item connection support and the trade name net after third, establishing an enterprise we the king, after toe ring back educating which carries on shoulder the importance of the civil official was embossed. The study which it sees led and like this investigation analysis the education progress for the successful support of the Internet Starts-up and time after connection setup construction it led and the plan which it will put out advancement of Starts-up education and it groped.