• Journal of Forest and Environmental Science
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• v.13 no.1
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• pp.66-80
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• 1997

Pinus koraiensis is one of the major speciese which have been recently planted for ten years and consists of 31% of total plantation. Presently young stand less than 30 years consists of 87% of total forest, but tending thinning of it is hardly carried out and the desirable direction for the thinning is not established yet. The objective of the study is to introduce the optimum thinning plan and thinning method through the long-run experiment of tending thinning for the Pinus koraiensis stand. The experiments carry out to interprete its growth model on the subject of two thinning experimental plots and yield table of Pinus koraiensis. As the basic step for understanding the thinning process, a theoretical growth model which is suitable to express the growth process is required. For that purpose, three growth functions (Mitscherlich, 4 parameter Richards, 3 parameter Richards) are applied to the diameter growth of the sample trees which are taken in the two plots. The results show that 3 parameter Richards is the most suitable. It is also verified that the diameter growth, the height growth, and the decrease in the number of stocks can be estimated by this function. To estimate the growth change of single tree, growth model including parameter h which is related to the occupation area of single tree are introduced. The parameter h can be estimated by using the data of the diameter growth obtained from the established experimental plots. Therefore, if both verification and modification of the usefulness of the model suggested is made, equations which tell about the thinning effects could be drived by estimating the growth process of single tree in advance.

• Journal of Korean Society of Forest Science
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• v.1 no.1
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• pp.12-21
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• 1962

Outdoor cuttings studies on two coniferous species, pitch pine and needle fir, have been made at Suwon, Korea extending from March to early May, 1956. The purpose of these studies was to find the effects of ages of parent trees, topophysis, dilute hormone solution treatments and the time at which the cuttings were collected on the rooting response of the cuttings. On September 2, rooting results were examined. Pitch Pine (Pinus rigida) The total of 1335 cuttings were collected from 3- and 10-year old trees. The cuttings treated were planted on March 13 and April 20. 1. In the cuttings collected from 3-year-old seedlings, the best result (34 percent rooted) was obtained by treating ends of cuttings with a mixture of 50 ppm IBA and 50 ppm NAA. 2. No rooting was observed in lammas shoots. 3. The cuttings from 3-year-old seedlings gave better rooting than those from 10-year-old trees. 4. The root origins were developed from the lower part of the cutting and the cut surface. Needle fir (Abies holophylla) One hundred twenty-five cuttings were collected from a 30-year-old tree. The cuttings treated with any one of four mixed hormone solutions were planted on March 23. 1. Fifteen cuttings out of 75 cuttings from the lower half of the crown were rooted. The cuttings obtained from the upper half of the crown did not root at all. 2. The cuttings treated by the hormone solution made up of 20 ppm IAA, 20 ppm IBA, 20 ppm NAA, 20 ppm thiamine and 5 percent sucrose gave the best rooting (22 percent). 3. All roots originated from callus tissues and irregularly arranged parenchymatous tissues near the cut base.

• Journal of the Korean Institute of Landscape Architecture
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• v.38 no.3
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• pp.107-114
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• 2010

This study was undertaken to suggest a Pinus densiflora community planting model in the central cool temperate zone of Korea and nearby areas. For the purpose of this study, we surveyed various DBH classes of the P. densiflora community in Dangjin-gun, Choongchungnam-do. We surveyed the size of entire individuals in the 92 plots as well as surveyed the location of individuals in each tree layer and sub-tree layer(1/100 scale) of 44 plots using a quadrant method from young to old communities. As a result of analysis, the tree layer was growing well but the basal areas of the subtree layer were less than 10% compared with the tree-layer. This indicates the subtree layer is not in general growing well in the P. densiflora community. There were no significant patterns in the shrub layer. A P. densiflora community planting would consist of a tree layer and a shrub layer and the finding of growth patterns of the tree layer is significant. In order to make a model of the shrub layer, an additionally survey of another shrub layer is needed in a nearby planting area. Both regression models, 1) between tree layer DBHs and individuals per unit area, and 2) between individuals per unit area and shortest distances of individuals, can yield much information through study.

• Journal of Korean Society of Forest Science
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• v.99 no.4
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• pp.528-533
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• 2010

Cage plots were established in 2008 to find the relationship between combination of tended Japanese red pine sapling and the habitation of Monochamus alternatus, a vector for pine wood nematode. Japanese red pine sapling tended at different times were successively put into the cage, and then the adult of Monochamus alternatus was put in June. Presence or absence of the larva was determined November. Sapling tendings were done at seven successive times in 2009, mid- and late February and March, mid-April, May and June. Some saplings were also tended in mid-October of 2008, the previous year of this experiment. The larva was found in all the saplings tended later than mid-March in 2009. No larva was found in the saplings tended in mid-October of 2008 and those in February of 2009. In case of the combination the by-products of mid-February and late March of 2009 and mid-October of 2008, the larva was found in the by-product of mid-February and late March of 2009, but those in mid-October of 2008 was not. When the saplings tended in mid-October of 2008 and mid- and late February of 2009 were put into the cage singly, the larva was found in all the saplings. Results indicated the mixture of the saplings tended at different times affected the habitation of Monochamus alternatus differently.

• Journal of Korea Entertainment Industry Association
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• v.15 no.3
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• pp.127-139
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• 2021

This study selected representative musical song genres and suggested the application of vocal scales to demonstrate the various musical genres that appear in the modern musical style. Various genres of music and singing methods appeared according to the change in musical style throughout the early period (the early 1990s), the Golden Age (1940s to1960s), and the contemporary period (1970s to present) of musical theatre. To this end, this study selected Classic Broadway, Contemporary Broadway, Jazz/Blues, and Pop/Rock as representative musical genres as primary categories. In addition, five musicals and five songs that can represent the musical genres were selected as secondary categories. This study then divided the singing styles into Legit from , Pop from , Rock from , Jazz/Blues from , and Hip Hop/Rap from and suggested vocal scales. The analysis of this study demonstrated how various music was used as a material for musicals responding to the needs of the times in musical history and how important it is to develop various singing styles. While this study selected five representative genres and musicals to limit the scope of analysis, it intends to expand the scope through follow-up research. Based on this, it is anticipated that various further research will be conducted to study the diversity of musical vocal education and vocal techniques.

• Journal of Korea Entertainment Industry Association
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• v.13 no.8
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• pp.231-242
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• 2019

(2014) directed by British-born second generation Iranian-American Ana Lily Amirpour, set in 'the Iranian ghost-town Bad City' attempts to make how the hybridization of multi-cultures makes interesting interpretations culture-politically, presenting a female vampire skateboarding in a striped t-shirt and a black chador. In traditional horror films, mainly male-Dracula was the center of the vampire narrative as other, but since the post-modernism era, vampire films try to shift women from the passive and dependent victim to the subjective and independent main agent. And the main character of the film, 'The Girl' who is a female Muslim vampire takes a step forward to punish men who commit gender violence. Shot in black and white, the film puts images ahead of narrative, while featuring Iranian actors, speaking Farsi. Furthermore, the film crosses over Iranian politics into American-European pop cultures with this eclectic mix of Iran's rock, British electro-pop and Ennio-Morricone-like western stylings. This study focuses on the style featured in which has successfully transformed and transplanted a vampire story into a critical contemporary discourse, mixing multiple genres and citing cultural trends while not following the traditional conventions of vampire films.

• Korean Association for Visual Culture
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• v.17
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• pp.65-92
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• 2011

This thesis investigates the complex functions of the magic lantern in illusionism and enlightment which was the most popular visual media and the direct ancestor of cinema. Especially, the thesis focuses on the characteristics of magic lantern's images which had been varied with the scientific and technological development. During the early period of the magic lantern, from the late 18th century to the beginning of the 19th century, it frightened viewers by showing magic images with ghosts and spectres, 'phantasmagoria', and wondered with images of natural catastropes and interesting stories like fables and fairy tales, which fulfilled the entertainment function. Since the mid 19th century the magic lantern began to show not only pictures of the 'scientific themes' on the earth, nature and human, but also them of the ethnological on the far, exotic worlds like Africa, Amazon and Syberia etc. from the European perspective. These contents conducted the educative function and contributed to the process of Enlightment to the peoples in the pre-modern age. The two functions of the magic lantern such as entertainment and education had been neither historically followed, nor clearly divided, but the one was predominant according to the development of lantern techniques as well as the changes of the world view and the culture of the time. The entertainment function of the magic lantern based on the visual fantacy did exist in the late 19th century further, and also in the late industrial society, even in the age of highly developed science and technology, viewers want rather 're-enchantment' by illusionism than facts and truths on the reality. This is an essential characteristic of the moving image media, as it had already been presented in the images of the magic lantern.

• Journal of Korean Society of Forest Science
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• v.52 no.1
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• pp.37-49
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• 1981

The purpose of the study is to find out the objective method of valuation on the forest stands through the analysis of logging costs that is positively related to timber production. The two forest (Amgog, Whangryoung), located nereby, but forest type, logging and skidding conditions being slightly different, were slected to carry out the study. The objective timber stumpage value were determined by investigating the appropriate timber production costs and profits of logging operations. The main result obtained in this study are as follows: 1. The rate of logging cost in consisting of timber market price is 13.15% in the area of Amgog logging place and 19.48% in Whangryoung. 2. The rate of the other production cost excluding logging cost is 15.36% in the area of Amgog logging place and 28.85% in Whangryoung. 3. The total rate of timber production cost in consisting of the market price is more than 28.51% in the area of Amgog logging place and 48.33% in Whangryoung, 4. Though the productivity of forest land is affected by the selection of tree species, tending, treatments and effective management of forest land, the more important problem is improvement of logging condition. 5. The rate of production cost in timber price is so high that we should endeavore to improve the productivity of labour and its quality, and minimize the difference of piece work per day in accordance to the various site condition. 6. Although the profit of forest industry is related to the period of recapturing investment, it is more closely related to the working condition, risk of investment and continuous change of social investment interest. 7. If the right variables which are related to the timber market, are objectively obtained, the stumpage value of mature forests can be objectively caculated by applying straight line discounting method or compound discounting method in caculating the stump to market price.

• Korean Journal of Agricultural Science
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• v.12 no.2
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• pp.260-271
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• 1985

A study was carried out to improve the feeding practice of Korean native goats. Ten goats were used in this study to obtain basic information needed for the determination of energy and nitrogen requirements for maintenance and growth. The results obtained were as follows. 1. The daily gain of male and female goats were $80{\pm}13.9g(\bar{x}{\pm}S.E.)$ and $41{\pm}8.9g$, respectively. 2. The amounts of orchardgrass hay and formula feed consumption by goats were 0.60-0.75% and 1.80-2.80% of their body weights, respectively, when fed ad libitum. The daily consumption of orchardgrass hay by goats when fed alone was 1.98-3.16% of their body weights. 3. The amounts of metaholizable energy needed for daily maintenance were 61.6, 65.0 and $72.3Kcal/BW_{kg}{^.75}$ at the live weights of 30, 21 and 12kg, respectively. 4. The daily nitrogen requirements for maintenance were 7.07, 4.67 and $3.04g/BW_{kg}{^.75}$ at the live weights of 30, 21 and kg, respectively. 5. Daily energy retention was 138 kcal/head and nitrogen retention rate was 13.3-22.5%.

• Journal of Korean Orthopaedic Sports Medicine
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• v.8 no.1
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• pp.33-38
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• 2009

Purpose: We wanted to report the clinical characteristics and arthroscopic findings of radial tear in medial meniscus posterior horn insertion, commonly occurs in patient over middle age with documentary review. Materials and Methods: Retrograde study using hospital records was done to 40 cases in 40 patients who visited our hospital and had been performed knee arthroscopic surgery due to medial meniscus posterior horn insertion tear between January, 2005 to April, 2007. Seven cases were male and 33 cases were female with the mean age of 61 (range, 47-80). Trauma history, stage of arthritis, period between pain and operation, MRI findings, clinical symptoms and operation methods were evaluated. Results : Six cases had trauma history while 34 cases didn't. In simple x-ray, using Kellgren-Lawrence classification, 31 cases were between stage 0 and II while 9 cases were stage III. In arthroscopic exam, there were 17 cases of Outerbridge grade IV, 4 cases of grade III, 9 cases of grade II, 9 cases of grade I. The mean duration of pain was 5.3 months. In MRI, at least one finding of cleft in axial or coronal view or ghost sign in sagittal view was found in all cases. The shape of meniscus tears were blunt in 18 cases, transverse in 12 and degenerative tear in 10. Subtotal meniscectomy was performed in 16 cases, partial meniscectomy in 10 cases and meniscal repair in 14 cases. Conclusion : Medial meniscus posterior horn insertion tear occurs in patients over middle age is rarely related to trauma history but causes painful mechanical symptom and usually accompany arthritis. Meniscectomy can be done for the treatment but repair can be considered is some cases. Further study on the treatment result will be needed.