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A Study on Real Time Traffic Performance Improvement Considering QoS in IEEE 802.15.6 WBAN Environments (IEEE 802.15.6 WBAN 환경에서 QoS를 고려한 실시간 트래픽 성능향상에 관한 연구)

  • Ro, Seung-Min;Kim, Chung-Ho;Kang, Chul-Ho
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.48 no.4
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    • pp.84-91
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    • 2011
  • Recently, WBAN(Wireless Body Area Network) which has progressed standardization based on IEEE 802.15.6 standardization is a network for the purpose of the short-range wireless communications within around 3 meters from the inner or outer human body. Effective QoS control technique and data efficient management in limited bandwidth such as audio and video are important elements in terms of users and loads in short-range wireless networks. In this paper, for high-speed WBAN IEEE 802.15.6 standard, the dynamic allocation to give an efficient bandwidth management and weighted fair queueing algorithm have been proposed through the adjustment of the super-frame about limited data and Quality of Service (QoS) based on the queuing algorithm. Weighted Fair Queueing(WFQ) Algorithm represents the robust performance about elements to qualitative aspects as well as maintaining fairness and maximization of system performance. The performance results show that the dynamic allocation expanded transmission bandwidth five times and the weighted fair queueing increased maximum 24.3 % throughput and also resolved delay bound problem.

Development of Designed Formulae for Predicting Ultimate Strength of the Perforated Stiffened Plate subjected to Axial Compressive Loading (압축하중을 받는 유공보강판 구조의 최종강도 설계식 개발)

  • Park, Joo-Shin;Ko, Jae-Yong;Lee, Kyung-Hwan
    • Journal of Navigation and Port Research
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    • v.31 no.5 s.121
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    • pp.435-445
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    • 2007
  • Ship structures are thin-walled structures and lots of cutouts, for example, of inner bottom structure, girder, upper deck hatch, floor and dia-frame etc. In the case where a plate has cutout it experiences reduced buckling and ultimate strength and at the same time the in-plane stress under compressive load produced by hull girder bending will be redistributed. In the present paper, we investigated several kinds of perforated stiffened model from actual ship structure and series of elasto-plastic large deflection analyses were performed to investigate into the influence of perforation on the buckling and ultimate strength of the perforated stiffened plate varying the cutout ratio, web height, thickness and type of cross-section by commercial FEA program(ANSYS). Closed-form formulas for predicting the ultimate strength of the perforated stiffened plate are empirically derived by curve fitting based on the Finite Element Analysis results. These formulas are used to evaluate the ultimate strength, which showed good correlation with FEM results. These results will be useful for evaluating the ultimate strength of the perforated stiffened plate in the preliminary design.

UE Measurement Based Compressed Mode in WCDMA (WCDMA 시스템에서 단말 측정에 의한 압축 모드 방법)

  • 김선명;장원학;조영종;임재성
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.29 no.7A
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    • pp.814-827
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    • 2004
  • The compressed mode is used to perform inter-frequency and inter-system handover in WCDMA. The instantaneous transmit power is increased in the compressed frame in order to keep the QoS(Quality of Service) unaffected by the reduced processing gain. Furthermore, since the inner loop power control is not active during the transmission gap and the effect of interleaving is decreased, a higher Eb/No target is required, which directly affects the system performance. Due to the impact on performance, the compressed mode should be activated by the RNC(Radio Network Controller) only when there is real need to execute an inter-frequency or inter-system handover. However, 3GPP does not define the method that decides the compressed mode activation. In order to reduce performance degradation, there is need the decision method. In this paper, we consider a combined cell structure in which some neighbor cells have a frequency the same as serving cell and the others have a different frequency or system. Under consideration, we analyze the effect of the compressed mode on the WCDMA forward link performance. In order to avoid performance degradation, we propose an UE(User Equipment) measurement method that can restrict the activation area of the compressed mode of UE that does not need it and evaluate its performance by simulations. Analytical results show that the use of the compressed mode affects the performance degradation. And simulation results show that proposed method leads to better performance.

Ecological Notes on Narcissus Flycatcher, Musciapa narcissina zanthopygia HAY - With special reference to the breeding process and feeding habits of nestlings during their nesting period- (흰눈섭황금새(Muscica narcissina zanthopygia HAY)의 생태-특히 번식경과와 육령기의 식습성)

  • WON, Pyong-Oh;RHEE, Kyung-Jho
    • The Korean Journal of Zoology
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    • v.8 no.2
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    • pp.89-127
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    • 1965
  • 1. This report is on the outcome of observation made up the breeding process of Narcissus flycatcher, Muscicapa narcissina zanthopygia, using 15 ness-boxes at Seoul and Kwang Nung Experimental forest in 1964, and the relevant feeding habit was studied by the collar method of wrapping the necks of thenestlings for 50-60 minutes or more in some cases from 1963 to 1964. 2. The Narcissus flycatcheris a common summer resident throughout Korea arriving at the end of April. The earliest data of arrival of this species in Seoul, is April 26, 1964. They migrate southward from the later part of September to early part of October. 3. In a week after their arrival , they start to build nest after a brief courtship. Male and female prepare their nest ina nestboxes in 4 or 5 days. Nests are usually found in the moss, which provide definite frame-work. The inner side of the nest is usually composed of roots of Gramineae or leaves of pine, oak or other broad leave tree. 4. The laying period is generally from the later part of April to the middle of June : and the number of eggs laid is from 3 to 8 , therefore 5 in average : eggs are pink with traces of milky yellow blending of light auburn and orange red spots and chicken-egg-like in shape. 5.The incubation takes place for 7-12 days from the middle part of May to the middle of June, in the order of male and female . The hatching rate tends to increase in proportion to clutch size. 6. The feeding period usually lasts 15 days in average from the early part of June to the middle of July and the feeding urge tends to increase in proportion to brood size. 7. The animals invading into their nest-boxes are red ants, chipmunks, bees , barkbeetles and philippine red-tailed shirkes, etc. 8. On the basis of analysis covering 714 birds in 31 nests, the food they consumed during the nesting period of nestlings were mostly of animal matters composing of : insect larvae form-39. 88% insect adult form 36.26%, insect pupae-0.19%, spider-17.75% and other animal matters 5.92% , Besides a small amount of plant pieces were found . As to the insect larvae, Lepidoptera was the largest in the content followed by Hymenoptera , Orthoptera and Coleoptera. As to the insect adult, Diptera was the largest in the content followed by Coleoptera, and Hymenoptera. In view of forest protection, noxious insect was of 69.38%, useful insect 4.39%, and spider 17.75%. 9. The rich assortment of its food, the ability of acquiring various insect (adults as well as larvae), its destruction of great numbers of harmful insects , and its quick assimilation artificial nesting with the nest-boxes of 2.5-3cm entrance hole employed, allow us to conclude that the flycatcher may be successfully employed in the elimination of fores pests. The above results are only that part obtained near Seoul in the middle of Korea, however, if we would extend the scheme to other broad areas using similar techniques, the nest-boxes could not only be well used by the birds, but also it would help to prevent the increase of harmful. insects.

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Expression of Good and Evil in Animation Film from a Perspective of Dionysian : Focusing on , a 3D Animation Film (디오니소스적 관점에서 본 애니메이션 영화의 선악 표현 : 3D 애니메이션 <빅 히어로>를 중심으로)

  • An, Se-Ung
    • Cartoon and Animation Studies
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    • s.41
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    • pp.31-55
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    • 2015
  • The purpose of this study is to pay attention to the expression of good and evil which has Been significantly developed out of the existing dichotomous good and evil in animation films and to identify for them. Even though 3D animation films provides us with a sense of realistic existence due to surprising technical powers, the stories contained in such films tend to remain in the limit of family films. However, recently, some films have been presented beyond such limit with a scenario that makes people introspect their inner side. Among them, this study considered the expression of good and evil of , which extended the meaning of didactic morality into the dimension of 'Philosophy of Dionysian yes', as significant for research purpose. More specifically, this study looked at and discussed this film in more details in the aspect of focusing on the value of good and evil for eliminating the boundary of the existing perspective and pursuing positive overcoming. The frame of the concept for discussion used the philosophical statements of Kant and Hegel as well as Nietzsche who explained the meaning of good and evil with Dionysian view. As to the method of research, this study attempted to understand the theoretically related concepts and discuss the meaning, along with the presentation of examples, by inputting such meaning into the expression of good and evil presented in the film. This study has the implication in identifying that an animation film, as a virtual world, plays a role of opening a new prospect for conversion of thought in our real world and expecting a future progress.

A Study on the Characteristics of Korean Townscape in Perspective of the Oriental World View (동양적 세계관의 관점에서 본 한국도시경관의 특성)

  • 김한배;이규목
    • Journal of the Korean Institute of Landscape Architecture
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    • v.21 no.4
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    • pp.55-68
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    • 1994
  • It has been generally agreed that the city form especially in the preindustrial age resembled their own world view, either in the western or the eastern cultural sphere. So, we aimed to redefine the characteristics of oriental world views compared with the western one, in order to find the relative nature of the Korean townscapes. It is said that the both world views(of western and oriental) are composed of the contrastive binary concepts in common, but there seems to have been nearly contrary differences in these two world views. Wheareas the former was based on the passively segregational and oppositional dualism, the latter, on the dynamically harmonious and complementary dualism, called generally as 'Yin(陰) and Yang(陽)'. Thus, the oriental world view can be thought as the 'philosophy of the relationship', which aim to unify the dualism ultimately with the help of this relationship. So, we can assume a certain third and intermediate concept between these dual concepts of the world view, which can unify these two into the one holistic whole. And the focuses of the most traditional oriental philosophies were concentrated on this, so called, 'the third concept', namely Taoistic 'Tochu(道樞)', Buddhistic 'Kong(空)' or Confucian 'Chung(中)'. And this triple concept, including the third one, of the oriental world view revealed a more concrete form of the cosmological relationship, as the triple structure; 'Heaven(天), Earth(地), and Man(人)', in which the 'Man' is thought as the middle or the center of the world. In this manner, we could found this oriental 'triple world view' was revealed in the real topology of most places in the Korean traditional city and the whole townscape itself. So, in the scale of houses and the roads around them, we can construe the 'Maru(a central board-floored room)' and the 'Madang(a inner court)' as the 'third and intermediate space(中)' between the interior space(陰) and exterior space(陽) in the former, and between the private house(陰) and the public residential road(陽) in the former case, and between the dual parts(陰,陽) of the city representing the contrary social classes and the contrastive visual landscapes. So, we insist that this 'triple world view' represented in the townscape can be one of the most important characteristics of Korean traditional townscape. And this third intermediate spaces, which generate the active social contact and the harmonious relationship among the people, can be the most important cues, as the central places, in the interpretation of the Korean townscapes even in contemporary circumstance, which inherits its spatial and social frame more or less from the preceding one.

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Understanding of I-Ching at a Viewpoint of Analytic Psychology - In a Basis at Ch'ien(乾) and K'on(坤) - (『주역(周易)』의 분석심리학적 이해 - 건괘(乾卦)·곤괘(坤卦)를 중심으로 -)

  • Shin, Sung-soo;Lee, Hyeon-gu
    • Cross-Cultural Studies
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    • v.31
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    • pp.119-153
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    • 2013
  • There is the commonness between I-Ching of Asian scriptures and Analytic Psychology of C. G. Jung as the conjunction of opposites of yin and yang. I-Ching has the base of the Great Absolute(太極) as yin and yang. Jung's psychology has the basic structure of opposite contents of psyche. The former wants to find the proper answer for the situation as fortune book, the latter realization of personal psyche. At this basis to approach I-Ching through the Analytic Psychology can be connected with the screening its inner system and structure in the frame of depth psychology. Basically I-Ching is the scripture about the good or ill luck, regret and stinginess. All of them are related with the psychology of human beings practically. I-Ching as the main scripture of Asia has the core theme concept of the mean (中). Previously mentioned the good or ill luck, regret and stinginess are included into this as the large view point. The best decision between the given situation and the fortune teller pursues the mean(中) path of both. Jung's psychology also attaches importance to the proper balance among personal conscious, unconscious and his surrounded situations. Goodness is relied on the mean, healthy psyche the harmony with the psychological and real situations of a person. But this balance and mean cannot be achieved without any reason but by the result of the conjunction of opposites. The opposites are the Ch'ien(乾, the Creative, Heaven) and K'un(坤, the Receptive, Earth) as yin and yang in I-Ching and the conscious and unconscious in Jung's psychology. These can be opened to masculine and feminine, psyche and matter, transcendent and existence and casuality and acausal synchronicity. Conjunction of these opposites can develope and create the new conscious and creative situation. Finally yin and yang from the Great Absolute and conscious and unconscious from Self become the opposites and go through necessary step of separation and sublimation for the creation of new level. In the Great Absolute there are yin and yang and yin the latter contains the cyclic process which can make the former renew. Conjunction of opposite in Jung's psychology also go through the similar process as the Great Absolute of yin and yang.

Zhuzi Learning, Yangming Learning, and Formation of "Gukhak": Genealogy of Subjectivity and Silsim (주자학과 양명학, 그리고 '국학'의 형성 - 주체성과 실심(實心)의 계보학 -)

  • Kim, Woo-hyung
    • The Journal of Korean Philosophical History
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    • no.58
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    • pp.307-336
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    • 2018
  • This paper traces the historical genealogy of the subjectivity and the silsim (實心, true mind) that appear in Jeong In-Bo's "gukhak" (國學, the national learning) thought and illuminates its characteristics. In the modern East Asian history of thought, the beginning of the emergence of subjectivity and the silsim as the main philosophical topic comes from the Neo-Confucianism of Song Dynasty in China. Cheng Yi is the first thinker to emphasize subjectivity and consciousness. Zhu Xi and Wang Yang-ming inherit the Neo-Confucian thought based on Cheng Yi's principle of subjectivity, but only show difference in methodology. In the Chosun Dynasty, Jeong Je-Doo and his School were one example of the Neo-Confucian spirit of subjectivity and the silsim. Although Jeong In-Bo (鄭寅普) belongs to Jeong Je-Doo's school of Ganghwa in the school curriculum, he has only used it methodologically since he believed that Yangming's learning is more effective in the awareness and practice of the silsim. Especially noteworthy is that the principle of subjectivity led Jeong In-Bo to follow the frame of Zhu Xi's moral theory. Jeong's claim that selfish desire (jasasim 自私心) should be controlled by a conscious mind (silsim) being aware of the right and 'ought to do' corresponds to Zhu Xi's view that the moral mind (dosim 道心) should be selected in the conflict situation between sensual desire (insim 人心) and moral consciousness so that the insim should be supervised by the dosim. Such ethics is a position to emphasize the inner motive and the sense of duty of conduct, and there is no fundamental difference in Zhu Xi and Wang Yang-ming. At least on this point, it is necessary to look at modern and contemporary Korean studies from the perspective of continuity, not discontinuity from Confucian tradition.

A Study on the Satirical Content Plot of an Absurd Play - Focused on Lee Keun-sam's Play - (부조리극의 풍자적 콘텐츠 플롯 연구 - 이근삼 희곡 <원고지>를 중심으로 -)

  • Son, Dae-Hwan
    • Journal of Korea Entertainment Industry Association
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    • v.13 no.5
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    • pp.73-82
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    • 2019
  • The satirical content of the absurd play, centered on Lee Keun-sam's play, represents the family image of a modern capitalist society where only duty is emphasized while the characters are lost in love with the family. They show humans becoming subordinate to economic logic as traditional relationships and family relationships change into material ones due to the rapid development of the economy. The narrator expresses the roles of the performer and the narrator together. It also presents the plot as a characteristic element of epic and absurd dramas, and directs actors as directors. It also foretells the events that will take place in the future, presents the inner consciousness of the characters in the play, and reduces and expands events and times. In terms of conflict, in order to fulfill the financial responsibility of their children, the professor translates them like a machine and the wife distributes the money they earn as they demand. The middle-aged professor and his wife are not willing to make a difference in the real world, so specific conflicts are not revealed. Therefore, no concrete conflict appears within this work. The plot of consisted of 22 epicentre compartments, consisting of a time frame from evening to the next morning. And no special events happen and show only one family's daily life. In addition, materials that show simple repetition of daily life such as newspapers, rice, birthdays, etc. are effectively showing the character of absurdity through repeated structure. The linguistic features of the absurd play focus on expressing anxiety, despair, fantasy and the sense of loss that the object's purpose has disappeared. The stage system avoids detailed portrayals of naturalist plays and creates a thoroughly simplified image that the theme of the play demands, which shows that the stage unit is also an important element that characterizes the absurdity of reflexes.

A Kinematic Analysis of Uchi-mata(inner thigh reaping throw) by Kumi-kata types in Judo (유도 맞잡기 타입에 따른 허벅다리걸기의 Kinematic 분석[I])

  • Kim, Eui-Hwan;Cho, Dong-Hee;Kwon, Moon-Seok
    • Korean Journal of Applied Biomechanics
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    • v.12 no.1
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    • pp.63-87
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    • 2002
  • The purpose of this study was to analyze the kinematic variables when Uchi-mata(inner thigh reaping throw) performing by Kumi-kata(engagement position, basic hold) types A, B(A: grasping part-behind neck lapel, B: chest lapel) in Judo with three dimensional analysis technique DLT method by videography. The subjects were four male judokas who have been training in Yong-In University(YIU), on Korean Representative level and Uchi-mata is their tokui-nage(favorite technique), the throwing form was filmed on two S-VHS 16mm video camera( 30frame/sec. Panasonic). Kinematic variables were temporal, posture, and COG. The data collection was performing by Uchi-mata. Six good trials were collected for each condition (type A, B) among over 10 trials. The mean values and the standard deviation for each variable were obtained and used as basic factors for examining characteristics of Uchi-mata by Kumi-kata types. The results of this analysis were as follows : 1) Temporal variables The total time elapsed(TE) by Uchi-mata of types A, B were 1.45, 1.56 sec. respectively. Types A shorter than B. 2) Posture variables In performing of Uchi-mata, the range of flexion in type A, left elbow was $45^{\circ}$ and B was $89^{\circ}$ from Event 2(E2) to Event 6(E6). Type A and B were quite different in right elbow angle in Event1(E1). Left shoulder angle of type A was extended and type B was flexed in E4. Both types right shoulder angles were showed similar pattern. Also both hip angles(right/left) were showed similar pattern. When type A performed Uchi-mata the knee-angle of supporting foot showed $142^{\circ}$in the 1st stage of kake phase[KP], and extended to $147^{\circ}$in the 2nd stage of KP. And the foot-ankle angle of supporting foot showed $83^{\circ}$in the 1st stage of KP, and extended to $86^{\circ}$in the 2nd stage of KP. moreover, The knee angle of attacking foot showed $126^{\circ}$in the 1st stage of KP, and extended to $132^{\circ}$in the 2nd stage of KP, and the foot-ankle angle of attacking foot showed $106^{\circ}$in the 1st stage of KP, and extended to $121^{\circ}$in the 2nd stage of KP. When type B performed Uchi-mata the knee-angle of supporting foot showed $144^{\circ}$in the 1st stage of KP, and extended to $154^{\circ}$in the 2nd stage of KP. And the foot-ankle angle of supporting foot showed $83^{\circ}$in the 1st stage of KP, and extended to $92^{\circ}$in the 2nd stage of KP. moreover, The knee angle of attacking foot showed $132^{\circ}$in the 1st stage of KP, and extended to $140^{\circ}$in the 2nd stage of KP, and the foot-ankle angle of attacking foot showed $103^{\circ}$in the 1st stage of KP, and extended to $115^{\circ}$in the 2nd stage of KP. During Uchi-mata performing, type A showed pulling pattern and type B showed lift-pulling pattern. As Kumi-kata types, it were different to upper body(elbow, shoulder angle), but mostly similar to lower body(hip, knee, ankle angle) on both types. 3) C. O. G. variables When the subjects performed Uchi-mata, COG of type A, B up and down in vertical aspect was 71cm, 73.8cm in height from the foot in the 2nd stage of KP. As Kumi-kata types, it were different on medial-lateral direction aspect but weren't different in Kuzushi phase on vertical direction aspect.


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