• Journal of Life Science
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• v.33 no.8
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• pp.651-662
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• 2023

Peroxisomes, known as microbodies, are a class of morphologically similar subcellular organelles commonly found in most eukaryotic cells. They are 0.2~1.8 ㎛ in diameter and are bound by a single membrane. The matrix is usually finely granular, but occasionally crystalline or fibrillary inclusions are observed. They characteristically contain hydrogen peroxide (H₂O₂) generating oxidases and contain the enzyme catalase, thus confining the metabolism of the poisonous H₂O₂ within these organelles. Therefore, the eukaryotic organelles are greatly dynamic both in morphology and metabolism. Plant peroxisomes, in particular, are associated with numerous metabolic processes, including β-oxidation, the glyoxylate cycle and photorespiration. Furthermore, plant peroxisomes are involved in development, along with responses to stresses such as the synthesis of important phytohormones of auxins, salicylic acid and jasmonic acids. In the past few decades substantial progress has been made in the study of peroxisome biogenesis in eukaryotic organisms, mainly in animals and yeasts. Advancement of sophisticated techniques in molecular biology and widening of the range of genomic applications have led to the identification of most peroxisomal genes and proteins (peroxins, PEXs). Furthermore, recent applications of proteome study have produced fundamental information on biogenesis in plant peroxisomes, together with improving our understanding of peroxisomal protein targeting, regulation, and degradation. Nonetheless, despite this progress in peroxisome development, much remains to be explained about how peroxisomes originate from the endoplasmic reticulum (ER), then assemble and divide. Peroxisomes perform dynamic roles in many phases of plant development, and in this review, we focus on the latest progress in furthering our understanding of plant peroxisome functions, biogenesis, and dynamics.

• Journal of The Korean Association For Science Education
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• v.25 no.7
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• pp.736-745
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• 2005

The purpose of this paper was to develop and execute self-appraisal test items on secondary science teachers. Test items included 6 sub-fields-subject knowledge, teaching strategies, teaching skills, assessment, laboratory management, and professional development - and 77 items. Using these test items, science teachers were able to evaluate their ability as prescribed by a 5-point Likert scale. Furthermore, teachers were able to comprehend fields showing their highest and lowest scores among the 6 sub-fields. They could then place special attention on the lowest field insuring self-growth as a science teacher. Self-appraisal test items were developed by analyzing related references on teacher evaluation criteria and standards. 220 subjects composed the sample on which these test items were executed. The results of this study were as follows. First, content validity of the test items was 80.8%. The range of sub-field reliabilities was .76 - .86 and the reliability coefficient of the entire test was .95. The range of correlation coefficient between each subfield was .54 - .69 and that of subfields and entire test was .54 - .79. The correlation coefficient between professional development and the whole test was .79, the highest coefficient observed. Second, significant difference was found according to teaching experience. More experienced teachers had higher scores in all 6 sub-fields (p<.05). In addition, a significant difference according to gender was observed in subject knowledge and laboratory management (p<.05); male teachers had higher scores than female teachers. Also, the higher the level of experience, the higher the scores for subject knowledge (p<.05). Lastly, the teacher's major did not result in any significant differences.

• Journal of agricultural medicine and community health
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• v.24 no.1
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• pp.13-33
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• 1999

The aim of this study was to investigate fatigue scores, physical complaints, farmer's syndrome and to find out its risk factors among farmers. The questionnaire survey was conducted to 177 vinyl house workers and 213 farmers who lived in Chongyang gun of Chungnam province from February 24 to March 15, 1998. The obtained main results were followings; 1. The fatigue scores were not significantly different between vinyl house workers and farmers. The fatigue scores were higher in female group, lower education group, shorter sleep hours group(under 8 hours), nonsmoker, nondrinker group than otherwise groups. There was not statistically significant difference between the mean fatigue scores and age, eating habit and body mass index. Duration of farming years in vinyl house and farming area and number of farming workers in farmers family showed a slight relationship with the fatigue score. 2. Health scores were not different between vinyl house workers and farmers. The health states was poorer in female group, lower education group, shorter sleep hours group(under 8 hours), nonsmoker group, and nondrinker group than otherwise groups by health scores. Health scores were not related with age, eating habit and body mass index. 3. The proportion of farmer's syndrome was 49.1% in vinyl house workers and 52.1% in farmers. That was higher in female than in male and the higher proportion was found in the lower education group of vinyl house workers and farmers. The proportion of farmer's syndrome was higher in the group of smoker, alcohol drinkers and over or under weight in vinyl house workers, but did not differ in those of farmers. 4. By multiple logistic regression, sex and sleep hours were risk factors affecting to farmer's syndrome. Odds ration for female group was 2.53 (reference group was male) and that for over 8 sleep hours group was 0.74 (reference group was under 8 sleep hours group). 5. The chief complaints by CMI were "I am difficult to work due to aching the back and the limbs", "I feel prickle pain in the limbs", "I sometimes have a twinge in the limbs", "I am not quite well as having a pain in the limbs", "I feel weaker grasping power than before" in both of vinyl house workers and farmers. Vinyl house workers more frequently pointed out skin darkening, skin disease and hemorrhoids than farmers. 6. According to correspondence analysis, skin disease of vinyl house workers was related to vinyl house farmers and digestive and general symptom was associated with male and endocrinological and muscular symptom was associated with female in vinyl house workers. And it revealed that farmer's syndrome was highly related with female and farmers relatively. By the above results, the fatigue scores, perceive health and farmer's syndrome did not much differ in two groups, but aged female farmers should be considered as female farmers represented higher fatigue score, farmers syndrome and poorer perceive health than male farmers in addition to farmer's syndrome was increased with ageing process. Also feeble but distinguished symptoms which might be due to working environment were observed especially in vinyl house workers and that should be considered and investigated continuously.

• Journal of Gifted/Talented Education
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• v.20 no.3
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• pp.767-788
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• 2010

The purpose of this study was to examine emotional characteristics and to provide information about the special needs of counselling of science gifted in Korea. The subjects were 143 science gifted high school students in Busan that had been tested MBTI and MMPI-A. The distribution map of MBTI type was examined and Pearson's correlation, one-way ANOVA, multiple regression analysis were used to analyse the relation between MBTI and MMPI-A through SPSS 17.0 program. The results showed as follows: first, ENTP, INTP, ISTJ personality types and NT temperament type were the most frequently from the distribution map of MBTI type. Second, F1, F2, F, Hs, D, Pt, Sc and Si scales of MMPI-A were positively related to I preference of MBTI and K and Ma scales of MMPI-A were significantly related to E preference of MBTI from Pearson's correlation. Third, The score of IN group was significantly more high in F1, Hs, D, SC and Si scales of MMPI-A than other group in the relation between two combination preferences of MBTI and scale of MMPI-A. The following results were same; IS group in D, Si scales, EN group in Ma scale, IT group in Hs, D, Pt and S scales, IF group in VRIN, D and Si scales, ET in Ma scale, IJ group in D and Si, IP group in F1, F, Hs, D, Hy, Pt, Sc and Si scales, EJ and EP groups in Ma scale. Finally, I preference of MBTI by F1, F2, F, Hs, D, Pt, Sc and Si scales of MMPI-A, E preference of MBTI by Ma scale of MMPI-A, F preference of MBTI by K scale of MMPI-A and P preference of MBTI by Hy scale of MMPI-A were significantly predicted from multiple regression analysis. Limitations of the current study and the suggestions for further research were offered.

• Journal of Korean Classical Literature and Education
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• no.33
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• pp.121-152
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• 2016

The purpose of this study is to illustrate the history of the Cheonsu-Temple天壽寺 and to describe the echo verse poem trend with regard to 'Waiting'待人 and why it is beautiful. The Cheonsu-Temple was located in the outskirts of Gaesung開城, the capital city during the Corea高麗 Dynasty. However, the temple was destroyed when the dynasty collapsed. Cheonsu-Station天壽院 was built amidst the temple ruins, as the temple was an important traffic point. The Cheonsu-Pavilion天水亭 was built in 1476 by Yi-Ye李芮 in the station's neighborhood. The station and the pavilion were completely ruined during the 17th century. Many poets visited the Cheonsu-Temple and composed poems in the latter part of the Corea Dynasty. 'Waiting'待人, written by Choi-Sarip崔斯立, -is the most famous work. Following this work, many poets composed echo verse poems 'Waiting' work that represented the anxiety of waiting for an old friend in front of the Cheonsu-Temple. The following is a highlighted verse: So many people who look like the old friend come to me, but it turned out no one was the man. This work is very picturesque. Over twenty echo verse poems 'Waiting' are categorized in three periods. They compared the "present" to the past by using the Zhenglingwei丁令威 origin from the former Joseon朝鮮 period. In the middle of Joseon period, Jungjong中宗 visited Cheonsu-Station and composed an echo verse poem 'Waiting'. The official literaries also composed poems there. In their works, they presented the collapse of the Corea Dynasty as inevitable and the construction of Joseon Dynasty as something reasonable. Cheonsu-Station was ruined in 17th century, followed after by the ruin of the Cheonsu-Pavilion. It appears that the echo verse poems to 'Waiting' in the latter Joseon period represented the ruin of the Cheonsu-Temple, the Cheonsu-Station, and the Cheonsu-Pavilion.

• Journal of The Korean Association For Science Education
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• v.33 no.7
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• pp.1367-1384
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• 2013

The purpose of this study was to develop a Science Academic Emotion Scale for Elementary Students. To make a scale, authors extract a core of 14 emotions related to science learning situations from Kim & Kim (2013) and literature review. Items on the scale consisted of 14 emotions and science learning situations. The first preliminary scale had 174 items on it. The number of 174 items was reduced and elaborated on by three science educators. Authors verified the scale using exploratory factor analysis, confirmatory factor analysis, inter-item consistency and concurrent validity. The second preliminary scale consisted of 141 items. The preliminary scale was reduced to seven factors and 56 items by applying exploratory factor analysis twice. The seven factors include: enjoyment contentment interest, boredom, shame, discontent, anger, anxiety, and laziness. The 56 items were elaborated on by five science educators. The scale with 56 items was fixed with seven factors and 35 items to get the final scale by applying confirmatory factor analysis twice. Except for Chi-square and GFI (Goodness of Fit Index), other various goodness of fit characteristics of the seven factors and 35 items model showed good estimated figures. The Cronbach of the scale was 0.85. The Cronbach of seven factors are 0.95 in enjoyment contentment interest, 0.81 in boredom, 0.87 in shame, 0.82 in discontent, 0.87 in anger, 0.77 in anxiety, 0.81 in laziness. The correlation coefficient was 0.59 in enjoyment contentment interest, 0.54 in anxiety, 0.42 in shame, and 0.28 in boredom, which were estimated using the Science Academic Emotion Scale and National Assessment System of Science-Related Affective Domain (Kim et al., 1998). Based on the results, authors judged that the Science Academic Emotion Scale for Elementary Students achieved an acceptable validity and reliability.

• Journal of Korean Classical Literature and Education
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• no.33
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• pp.153-184
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• 2016

This study investigates the funeral rituals practiced by the Joseon Dynasty as recorded about Lee Mun Geon (1494~1567, a.k.a Mukjae), who mourned by the grave of his deceased mother, Ms. Shin (1463~1535), a woman whose family's origin was Goryeon. The study focuse on the rituals performed by Lee after his mother's death, his participation in the funeral, and his mourning specifically as an individual who has lost his parent. Reviewing Lee's mourning life beside the grave, the contents of diary belonging to a nobleman in the middle of Joseon Dynasty were studied aimsing to find out the meaning of rituals, the overall recognition accorded to death, and the filial duties that were carried out by the noblemen of the time. Although noblemen in the middle of Joseon Dynasty ceaselessly attempted to change the observance of funeral rituals through legislation, it was difficult to change the mindset of the people, who fllowed the deep-rooted traditions of long history. It must be acknowledged that the Joseon Dynasty had a different cultural background than that of China. There was a fundamental problem when they tried to adapt The Family Rituals of Zhu Xi, followed by the Chinese, to the Joseon society. Although The Family Rituals of Zhu Xi emphasized ancestral rites focusing on enshrining mortuary tablets and the importance of establishing the family shrine hundred times, noblemen in the mid-Joseon Dynasty period cared for their parents in the grave by mourning for them than by following such practice. The solemn memorial service held in front of the grave, and the annual ritual service on the death anniversary were far more important to the noblemen in the mid-Joseon Dynasty. Amid such contradictions, the noblemen accepted and performed the mourning rituals beside the grave of their parent. Human beings across the ages have always dwelt upon thoughts of the afterlife. Most people believe that they attain a state after the death of their physicalbody. If humans did not have such thoughts, they would not be bothered if death occurs on being hit by a car on the street. Thus, human beings often think of the ritual services related to death, although in different forms. Therefore, mourning by the grave of their parent held great significance among the noblemen of the Joseon Dynasty as a sign of their filial piety.

• Korean Journal of Plant Resources
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• v.34 no.4
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• pp.346-361
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• 2021

The range of D. spathulata identified in this survey was between N 35° 24' 58" ~ N 35° 26' 35", E 129° 05' 43" ~ E 129° 07' 04". It is located at an altitude of 98~592 m. The soil pH was strongly acidic in the range of 4.2~4.9, with a canopy openness of 18.56% and a chlorophyll index of 36.74 ± 2.80. As a result of the TWINSPAN analysis, 20 plots of 100 m² each were divided in 4 communities: Pinus densiflora community, Quercus monglica-Diabelia spathulata community, Quercus serrata-Diabelia spathulata community and Carpinus tschonoskii subassociation. The result of species diversity was 0.7615, and evenness and dominance were found to be 0.6077 and 0.3923, respectively. The height of D. spathulata is up to 3.4 m, and the average height is 1.1 m, with most of the species distributed as shrubbery and herbaceous. The average population density of the 20 plots was 1.635 individuals/m², the height range of flowering was 1.0 ~ 1.8 (aver. 1.39 m) and the rate of flowering was 27.37%. It's propagation pattern was mainly formed by extending the rhizome to the side, creating a colony of ground stems.

• The Korean Journal of Elementary Counseling
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• v.11 no.3
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• pp.391-405
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• 2012

The purpose of this study is to discover unique personality traits which the children of 5 social status types using 10 clinical scales of Korea Children's personality test (KCPI-S) in order to define the characteristics of 5 social status types developed as the Korean type. For this purpose, two hypotheses were set and tested. The subjects of this study were 502 children who were 4, 5th and 6th grade elementary school boys and girls in A city. 5 social status types and gender of children were set as the independent variables each, and 10 clinical scales of Korea Children's personality test as the dependent variables. The research hypotheses were analyzed in turn by the multivariate analysis (MANOVA) and t-test. The results are as follows: First, the results of analyzing differences in 10 clinical scales in accordance with 5 social status types how the significant differences in all 9 clinical scales except for language development scale, and ${\eta}^2$ representing the explanatory power of the independent variables to dependent variables was found to be in the range of the lowest at 2% up to 10% for each scale. Second, the results of analysis of the gender difference show that in the case of the children with controversial and neglected children, the significant difference was appeared between boys and girls in 8-9 scales among the 10 clinical scales, but in the case of rest 3 social status types (average, popular, rejected children) the difference was appeared between boys and girls only in 2-3 scales. Depending on these results it seems that each of 5 social status types of the children has its own unique personality structure. It is necessary to attend to the fact that in the case of the children with controversial and neglected children, the average value of boys are significantly higher than that of the girls. There is a big possibility that the boys have more psychological problems that the girls. It is judged that in case of these two types the personal traits applying gender should be interpreted. Therefore, the follow-up study should conduct the exploratory research on the structure of the relationship between children's language development and sociality measure. Further, it is necessary to conduct the psychological comparison between genders in the children with controversial and neglected children, and to study the structure of their relationship with rest social status types by genders.

• (The)Study of the Eastern Classic
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• no.69
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• pp.9-44
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• 2017

Seonsaengan(先生案) is the predecessor's lists. The list includes the names of the predecessor, the date of the appointment, the date of return, the previous job, and the next job. Therefore, previous studies on the local recruitment and Jungin (中人) that can not be found in general personnel information of the Joseon dynasty were conducted. However, the status and classification of the list has not been achieved yet. So this study aims to clarify the status, classification and data characteristics of the list. 176 books, are the Joseon dynasty lists of predecessors, remain to this day. These lists are in Jangseogak(47 cases), Kyujanggak(80 cases), the National Library of Korea(24 cases) and other collections(25 cases). Jangseogak has lists of royal government officials, Kyujanggak has lists of central government officials, and the National Library of Korea and other collections have lists of local government officials. However, this paper focuses on accessible Jangseogak list of 47 cases. As I mentioned earlier, the Jangsaegak lists are generally related to the royal government officails. This classification includes 18 central government officials, 5 local government officials, and 24 royal government officails. If the list is classified as contents, it can be classified into six rituals and diplomatic officials, 12 royal government officials, 5 local government officials, 14 royal tombs officials, and 10 royal education officials. Through the information on the list, the following six characteristics can be summarized. First, it can be finded the basic personal information about the recorded person. Second, the period of office and reasons for leaving the office and office can be known. Third, changes in the office system can be confirmed. Fourth, it can be looked at one aspect of the personnel administration system of the Joseon Dynasty through the previous workplace and the next job. Fifth, it is possible to know days that are particularly important for each government. Sixth, the contents of work evaluation can be confirmed. This is the reality of the Joseon Dynasty, which is different from the contents recorded in the Code. Through this, it is possible to look at the personnel administration system of the Joseon Dynasty. However, in order to carry out a precise review, it is necessary to make a database for 176 lists. In addition, if data is analyzed in connection with existing genealogy data, it will be possible to establish a basis for understanding the personnel administration system of the Joseon Dynasty.