• 제목/요약/키워드: Three-way cross

검색결과 199건 처리시간 0.025초

The Effects of Stress Related Genes on Carcass Traits and Meat Quality in Pigs

  • Jin, H.J.;Park, B.Y.;Park, J.C.;Hwang, I.H.;Lee, S.S.;Yeon, S.H.;Kim, C.D.;Cho, C.Y.;Kim, Y.K.;Min, K.S.;Feng, S.T.;Li, Z.D.;Park, C.K.;Kim, C.I.
    • Asian-Australasian Journal of Animal Sciences
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    • 제19권2호
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    • pp.280-285
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    • 2006
  • The current study was conducted to investigate the relationship between stress related gene and meat quality in pigs. A total number of 212 three-way cross bred (Landrace-$Yorkshire{\times}Duroc$) and 38 Duroc were sampled from the Korean pig industry to determine genotype frequency of porcine stress syndrome (PSS) and heat shock protein 70 kDa (HSP70) genes and their relationship with carcass traits and longissimus meat quality. Screen of HSP70 was performed by the single strand conformation polymorphism (SSCP) technique. Based on the analysis of restriction fragment length polymorphism (RFLP) in ryanodine receptor 1 (RYR1) gene, genetic disorder of PSS was related to a mutation at $18,168^{th}$ (C to T) of exon 17. There was no significant difference in ultimate meat pH and backfat thickness between HSP70 K1-AA type and -BB type in pure Duroc breed. In Landrace-$Yorkshire{\times}Duroc$ (L-$Y{\times}D$) cross bred pig, our results indicated that HSP70 derivate type in Duroc had a limited effect on backfat thickness, but L-$Y{\times}D$ type had a noticeable linkage with HSP70 K1-AA and K3-AB. This tendency was also observed in hot carcass weight where HSP70 K1-AA and K3-AB resulted in heavier weight with 86.3 kg compared to HSP70 K1-AB and K3-BB of 74.3 kg. Results imply that stress related HSP70 genotype has a potential association with backfat thickness and carcass weight.

VENGEANCE, VIOLENCE, VAMPIRES: Dark Humour in the Films of Park Chan-wook

  • Hughes, Jessica
    • 비교문화연구
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    • 제28권
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    • pp.17-36
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    • 2012
  • This essay places the South Korean film Thirst (2009) within Park Chan-wook's oeuvre as a filmmaker notorious for graphic depictions of violence and revenge. Park's use of dark humour in his films, which is emphasized in Thirst perhaps more than ever, allows for a more self-aware depiction of violence, where both the viewer and the protagonist are awakened to the futility of revenge. This ultimately paints his characters as fascinatingly crazy - simultaneously heroes, villains, and victims. Film theorist Wes D. Gehring's three themes of dark humour ('man as beast,' 'the absurdity of the world,' and 'the omnipresence of death') become most obvious in Park's most recent film, which pays closer attention to character development through narrative detail. Rather than portraying the characters as sentimental, dark humour depicts their misfortunes in an alternative way, allowing for consideration of such taboo subjects as religion, adultery, and death/suicide. These issues are further tackled through Thirst's portrayal of its vampire protagonist, which ultimately de-mystifies the traditional vampire figure. While this character has more often been associated with romance, exoticism and the mystical powers of the supernatural, Thirst takes relatively little from the demons of Nosferatu (Murnau, 1922) and various other Dracula adaptations, nor the romantic figures of Interview with the Vampire (Jordan, 1994), and Twilight (Hardwicke, 2008). Instead, it is part of a much smaller group of contemporary vampire films, which are rather informed by a postmodern reconfiguration of the monster. Thus, this paper examines Thirst as an important contribution to the global and hybrid nature of those films in which postmodern vampires are sympathetic and de-mystified, exhibiting symptoms stemming from a natural illness or misfortune. Park's undertaking of a vampire film allows for a complex balance between narrative and visuals through his focus on the Western implications of this myth within Korean cinema. This combination of international references and traditional Korean culture marks it as highly conscious of New Korean Cinema's focus on globalization. With Thirst, Park successfully unites familiar images of the vampire hunting and feeding, with more stylistically distinct, grotesque images of violence and revenge. In this sense, dark humour highlights the less charming aspects of the vampire struggling to survive, most effective in scenes depicting the protagonist feeding from his friend's IV in the hospital, and sitting in the sunlight, slowly turning to ash, in the final minutes of the film. The international appeal of Park's style, combining conventions of the horror/thriller genre with his own mixture of dark humour and non-linear narrative, is epitomized in Thirst, which underscores South Korea's growing global interest with its overt international framework. Furthermore, he portrayal of the vampire as a sympathetic figure allows for a shift away from the conventional focus on myth and the exotic, toward a renewed construction of the vampire in terms of its contribution to generic hybridization and cultural adaptation.

사랑과 정의의 관계: 헤겔의 인정이론 (The Relationship Between Love and Justice: Hegel's Theory of Recognition)

  • 서윤호
    • 비교문화연구
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    • 제52권
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    • pp.111-132
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    • 2018
  • '사랑과 정의의 관계'에 접근하는 방식은 이를 주장하는 사람마다 다양하다. 양자의 관계를 대립적으로 보아 사랑의 우위를 주장하거나 아니면 정의의 우위를 주장할 수 있다. 또 양자를 대립적 관계가 아니라 보완적 관계로 파악하여 서로가 서로를 필요로 하는 것으로 주장할 수도 있다. 그러나 헤겔은 사랑과 정의를 각각 서로 다른 영역에서 적용되는 독자적 구성원리로 파악하고, 이를 대립적 관계로도 보완적 관계로도 보지 않는다. 이는 그의 독특한 인정이론의 구조를 전제로 할 때 비로소 이해가능하다. 여기에서는 '헤겔의 인정이론' 속에서 '사랑과 정의의 관계'를 살펴보고자 한다. 주로 헤겔의 인정이론에 대한 철학적인 핵심사항을 살펴보고, 그 기초 위에서 '사랑과 정의의 관계'에 대해 어떠한 결과를 끌어낼 수 있는지 살펴보고자 한다. 이를 거칠게나마 테제의 형식으로 정리한다면, 다음과 같이 요약할 수 있을 것이다. - 헤겔은 인정의 다양한 형태로서 사회적 관계의 세 형태인 가족, 시민사회, 국가에 각각 사랑, 정의, 연대를 그 구성원리로서 제시한다. 헤겔에게서 사랑과 정의는 일반적으로 양자의 관계를 파악하듯이 대립적 관계에 있지도 않으며, 보완적 관계에 있지도 않다. - 헤겔의 인정이론에서 사랑과 정의는 각각 타당한 영역이 다를 뿐이다. 사랑은 친밀성의 영역에 타당한 원리이고, 정의는 비친밀성의 영역에 타당한 원리이다. 따라서 친밀성의 영역에 정의와 권리를 주장하게 되면 친밀성의 영역이 파괴되고, 비친밀성의 영역에 사랑을 주장하게 되면 실제적인 영향력을 행사할 수 없다. - 친밀성과 비친밀성이 서로 중첩되는 국가라는 정치적 공동체에서는 가족의 경우처럼 사랑의 원리 위에 서 있거나 시민사회의 경우처럼 정의의 원리 위에 서 있는 것이 아니라, 새로운 구성원리인 공동성의 토대 위에서 연대의 원리가 필요하다.

일반계 고등학생과의 비교를 통한 공업계 특성화고등학교 학생들의 과학학습동기 탐색 (Exploring science learning motivation of technical high school students through comparison)

  • 신세인;이준기;이고은;하민수
    • 과학교육연구지
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    • 제41권3호
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    • pp.281-296
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    • 2017
  • 이 연구의 목적은 일반계 고등학생과의 비교를 통해 공업계 특성화고등학교 학생들의 과학학습동기를 탐색하는 것이다. 이를 위해 구체적으로 두 학교 학생들의 과학학습동기 수준을 비교하였으며, 학습동기 구인들의 상관관계는 어떠한 차이가 있는지 비교하였다. 마지막으로 공업계열 학생들의 과학학습동기가 학업성취에 미치는 영향을 확인하였다. 이 연구에는 공업계 특성화고등학교 학생 596명과 일반계 고등학교 학생 1063이 참여하였다. 자료 분석을 위해 이원변량분석(two-way ANOVA), 독립표본 t-검정, Pearson상관관계 분석의 두 가지 통계 방법을 사용하였다. 분석 결과 학교와 학년간 상호작용이 과학학습동기 차이에 유의미한 효과를 나타내었다. 일반계 고등학교 학생들이 학년에 따라 학습동기의 큰 차이를 보이는 반면, 공업계 특성화고 학생들의 경우 학년 간 유의미한 차이가 없었다. 특히 일반계 고등학교 자연계열 학생들에 비해 낮은 수준의 과학학습동기를 나타내었다. 과학학습동기의 다섯 가지 요소 간 상관관계 또한 일반계 고등학교 학생들에 비하여 공업계고 학생들이 상당히 낮았다. 마지막으로 공업계 특성화고 2학년들의 과학학습동기와 학업성취도의 상관정도는 1학년학생들에 비해 적었다. 이러한 결과들을 종합해 볼 때, 공업계 고등학교 학생들의 과학학습동기 향상을 위한 교육적 전략이 필요함을 알 수 있다. 결과들을 바탕으로 공업계열 학생들의 과학교육의 방향에 대하여 논의하고자 한다.

지르코니아 블록과 CAM 종류에 따른 코핑의 변연적합도와 기계적 특성 비교 (Comparison on marginal fitness and mechanical properties of copings with zirconia block and CAM type)

  • 정인성;전병욱;김원영;강재민
    • 대한치과기공학회지
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    • 제39권2호
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    • pp.75-82
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    • 2017
  • Purpose: This study provided the basic data for selection the zirconia block and CAM by means of marginal fitness observations, flexural strength test and hardness test. Methods: Three dental zirconia blocks(ABCera, NaturaZ, ST98) and two dental milling machines(CAD/CAM MS, DWX-50) were used in this study. Metal abutment(diameter 10 mm, height 5 mm, inclined angle $3^{\circ}$ taper, 1 mm chamfer margin) was fabricated by Ti customized abutment, and then zirconia copings were fabricated for each ten specimens. Silicone replica technique was used to observe the marginal fitness of cross-sections with a stereomicroscope at ${\times}50$ magnification. The dental zirconia blocks was cut into 10 pieces each having a size of $25mm{\times}5mm{\times}1mm$, and fabricated according to the manufacturer's instructions, and flexural strength was measured using a universal testing machine. For hardness test, a micro Vickers hardness tester was used as it was in the flexural strength test. Statistical analysis was performed by one way ANOVA and post-test was performed by Scheffe test. Results: For marginal fitness of bucco-lingual axial, ZU group($59.7{\pm}10.3{\mu}m$) was the lowest, followed by RA, ZA, ZD, RD, RU. For marginal fitness of mesio-distal axial, ZU group($59.3{\pm}10.2{\mu}m$) was the lowest, followed by RA, ZA, RD, ZD, RU. One-way ANOVA showed statistically significant difference between groups(p<0.05). For flexural strength, ABCera block($718.0{\pm}57.2MPa$) was the highest, followed by NaturaZ, ST98. For hardness, ABCera block($1550.3{\pm}19.8Hv$) was the highest, followed by ST98, NaturaZ. There was no significant difference in flexural strength and hardness between blocks(p>0.05). Conclusion: Based on the results of this study, the type of dental zirconia block did influence the marginal fitness, and all dental zirconia blocks are expected to be suitable for clinical application. The highest flexural strength and hardness were ABCera block, and no statistically significant difference was observed.

중년여성의 생활습관에 따른 체력과 골밀도 비교 연구 (A Comparison of Physical fitness and Bone Mineral Density by Lifestyles on Middle-aged Women)

  • 이순희;이경훈;유재현
    • 디지털융복합연구
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    • 제12권2호
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    • pp.447-453
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    • 2014
  • 본 연구는 중년 여성을 대상으로 생활습관에 따라 골밀도와 체력에 미치는 영향을 분석하여 운동프로그램에 관련된 유용한 정보를 제공하는데 목적이 있다. 연구를 수행하기 위하여 C보건소를 내원한 여성 331명을 대상으로 운동습관에 따라 비운동군, 저빈도운동군(주당 2회 이하 운동), 중정도운동군(주당 3회 이상)으로, 음주습관에 따라서는 비음주군과 저음주군(주당 2회 이하 음주), 고음주군(주당 3회 이상), 염분섭취수준에 따라 저염식이군, 중염식이군, 고염식이군으로 각각 분류하였다. 측정변인은 골밀도와 최대산소섭취량, 체지방률, 악력, 유연성, 민첩성, 평형성으로 하였으며, 집단간 차이를 검증하기 위하여 운동습관에 따라서 one-way ANOVA를 각각 실시하였다. 운동습관이 많을수록 골밀도는 유의하게 높았으며, 체지방률은 유의하게 낮게 나타났다. 음주습관과 염분섭취수준에 따른 골밀도 및 체력은 유의한 차이를 보이지 않았지만, 염분섭취가 많을수록 체중과 체지방이 증가하는 경향을 보였다. 결론적으로 규칙적인 운동은 골밀도와 체력유지에 도움을 주며, 고염식이는 체중증가의 요인이 될 수 있을 것으로 사료된다.

세륨옥사이드나노입자(CNP)첨가가 치면열구전색재 기계적 성질에 미치는 영향 (Effects of Cerium Oxide Nano Particles(CNP) Containing on The Mechanical of Pit and Fissure Sealant)

  • 정미애;김동애
    • 한국콘텐츠학회논문지
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    • 제20권6호
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    • pp.433-438
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    • 2020
  • 본 연구는 세륨옥사이드나노입자(CNP)를 함유한 치면열구전색재를 제조하고 기계적 특성을 평가하고자 하였다. CNP를 상업용 ConciseTM 치면열구전색재에 0-4.0 wt% 혼합하고 비커스경도(2 × 10 mm)와 굽힙강도(2 × 2 × 25 mm) 시편을 제작 후 37℃ 수중에서 1. 7. 14일 보관하였다. 재료시험기(Instron, 3344)로 분당 1 mm/min 속도로 평가하였다. 결과는 일원배치 분산분석과 Duncan사후검정으로 실시하였다(p<0.05). 실험결과 굽힘강도와 탄성계수는 다소 차이를 보이긴 하였지만 통계적으로 유의한 차이는 나타나지 않았으며 비커스경도는 CNP첨가한 실험군에서 통계적 유의한 차이가 나타났다(p<0.05). 위의 결과는 CNP를 첨가한 치면열구전색재의 기계적 성질 향상을 위한 잠재성이 있음을 입증한 것이라 사료된다. 향후 CNP의 첨가양에 따른 효율성과 폭 넓은 임상 연구가 필요할 것으로 사료된다.

Effect of Timing of Light Curing on the Shear Bond Strength of Three Self-adhesive Resin Cements

  • Yoo, Yeon-Kwon;Kim, Sung-Hun;Ryu, Jae-Jun;Ryu, Jae-Jun
    • Journal of Korean Dental Science
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    • 제1권1호
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    • pp.28-34
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    • 2008
  • Objectives. The objectives of this study were: 1) to compare the effect of varying timing of light curing on shear bond strength, and; 2) to compare the shear bond strength of three self-adhesive cements. Materials and methods. A total of 72 extracted non-carious teeth were divided into 24 for Unicem tests, 24 for Maxcem tests, and 24 for Biscem tests; they were assigned 3 * 2 subgroups of 12 teeth each. The specimens were prepared as follows: 1) The calculus and periodontal ligament were removed from the teeth; 2) The teeth were stored in normal saline; 3) The occlusal enamel of each tooth was removed using high-speed coarse diamond burs under water cooling, and; 4) Finally, the teeth were flattened by 600-grit silicone carbide paper disks. Resin blocks were adhered using either Unicem, Maxcem, or Biscem. Light curing timing was divided into two groups: U10, M10, and B10 were exposed to light after 10 seconds, and; U150, M150, and B150 on the other side were exposed to light after 150 seconds. Shear bond strength was measured by a Universal testing machine with cross head speed of 1mm/min. T-test and One way ANOVA were used for the statistical analysis of data. Results. The shear bond strength of U150 was not significantly higher than that of U10 (U150: 20.55.7Mpa, U10: 18.73.80Mpa). On the other hand, the shear bond strength of M150 was significantly higher than that of M10. The shear bond strength of B150 was also significantly higher than that of B10 (M150:14.45.7Mpa, M10: 9.94.2Mpa, B150: 24.38.3Mpa, B10: 17.27.3Mpa). When the light curing timing was 10sec after bonding, the shear bond strength of Unicem was highest; the shear bond strength of Biscem was highest when the light curing timing was 150sec after bonding (U10: 18.73.80Mpa, B150: 24.38.3Mpa). Significance. Since Unicem is less sensitive based on light curing timing, dentists seem to use it without considering the light curing timing. Maxcem showed the lowest bonding strength (especially M10). Thus, when using Maxcem, dentists need to delay the light curing after adhesion.

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Effects of Different Dietary Acidifier Sources of Calcium and Phosphorus on Ammonia, Methane and Odorant Emission from Growing-finishing Pigs

  • Kim, I.B.;Ferke, P.R.;Powers, W.J.;Stein, H.H.;Van Kempe, T.A.T.G.
    • Asian-Australasian Journal of Animal Sciences
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    • 제17권8호
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    • pp.1131-1138
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    • 2004
  • The objective of this study was to investigate the effects of different sources of Ca and P on urine and ileal digesta pH, and ammonia ($NH_{3}$), methane ($CH_{4}$), and odor emission. In experiment 1, eight pigs (commercial three-way cross; initial BW 67$\pm$3 kg) were arranged in a repeated 4$\times$4 Latin Square design. All pigs were equipped with a T-cannula in the distal ileum. Four corn-soybean meal based diets were formulated. Diet 1 was the control in which dicalcium phosphate (DCP) and limestone ($CaCO_{3}$) were used as the sources of inorganic P and Ca. In Diets 2 and 3, ${H_{3}}{PO_{4}}$, monocalcium phosphate (MCP), and $CaSO_{4}$replaced DCP and $CaCO_{3}$ as the inorganic sources of P and Ca. Diet 4 was similar to Diet 1 except that it was fortified with HCl to provide an acid load similar to that of diet 2. Urine and ileal digesta pH were determined in pigs fed each of these diets. In Exp. 1, urine pH decreased (p<0.05) in animals consuming diets containing ${H_{3}}{PO_{4}}$-$CaSO_{4}$ (5.85$\pm$0.38) and MCP-$CaSO_{4}$(5.73$\pm$0.30) compared with the DCP-$CaCO_{3}$ diet (6.89$\pm$0.24). In the pigs consuming ${H_{3}}{PO_{4}}$-$CaSO_{4}$, ileal digesta pH decreased compared with the control (5.52$\pm$0.28 vs. 6.66$\pm$0.17; p<0.05). Based on the results of Exp. 1, a total of four trials were performed in environmental chambers for determining how $NH_{3}$, $NH_{4}$, and odor were affected by the different dietary Ca and P sources (Exp. 2). In Exp. 2, pigs fed the ${H_{3}}{PO_{4}}$-$CaSO_{4}$ diet had decreased (30%) $NH_{3}$ emissions compared with the control (p<0.05). Also, a combination of MCP-$CaCO_{3}$-$CaCl_{12}$ decreased $NH_{3}$ emission by 15% (p<0.05). Emission of $CH_{4}$ was decreased only with the ${H_{3}}{PO_{4}}$-$CaSO_{4}$ diet with 14% (p<0.05). Odorant emission of phenolics and volatile fatty acids increased roughly three-fold with the DCP-$CaSO_{4}$ diet but was not affected by other test diets. In conclusion, acidogenic Ca and P sources in swine diets can decrease the urinary pH and reduce $NH_{3}$ and $CH_{4}$ emission from swine facilities.

방위산업의 시장구조 결정요인이 기술혁신과 시장지배에 미치는 영향 (The study of the relationship of the defense industry-specific factors effect the innovation of manufacturing technology and the market share.)

  • 정용현
    • 안보군사학연구
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    • 통권5호
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    • pp.241-280
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    • 2007
  • This study examines the relationship of the industry-specific factors that effect innovation of manufacturing technology and the market share within the defense industry. Since the establishment of the basic defense industry framework in 1973, there were numerous interactions of the industry-specific factors of the defense industry structure with the technological innovation and market organization of the defense industry. During last three decades, the domestic defense industry has achieved the considerable level but the framework of the basic system has not developed much in areas of the military science and the defense manufacturing technology. Industry-specific factors were formed in the process and appeared in a variety of behavioral characteristics as subsystems. Currently, there IS a growing trend where the management of defense industry is gradually deteriorating due to limitation of the domestic industry-specific factor (e.g. defense technologies, amount of demand, etc.). If there is a prominent imbalance of the industry-specific factors. it can trigger the potential problem of conflict, lack of cooperation and control, slowing the growth of the manufacturing technology thereby diminishing the market and deteriorating the defense supply/demand relationship. In a research conducted by Joe S. Bain, Bain analyzed the relationship of the traditional industrial organization where industry-specific factor(S) not only impacts the conductor(C). And, conductor(C) influences the shaping of the performance(P) of relationship of the traditional industrial organization. Consequently, the researcher has identified the demand monopoly, barriers to entry, and market competition with comparison of defense industry issues. These defense issues were three industry-specific factors identified, which are 1) The demand monopoly and The entry barriers to new market competition, 2) the industrial technical factor to a production technical competitiveness and a market sharing competitiveness, 3) the probability factor to revolution for military affairs(RMA) and a R&D production. According to baseline with these factors, the following research model is established from the special companies group(Group A), the systematization companies group(Group B), and the general companies group(Group 0. The hypothesis is that if there are more industry-specific factors, then there will be more relationships of defense industry relation statutes. This research is an empirical study on the relationship that the industry specific factors effects the innovation of manufacturing technology and the shaping of the market in the defense industry. Moreover, the existing models to evaluate the industry specific factors of the defense industry IS much to be desired with the controlled statistical analysis of the result. It is vital to study on current situation with suggesting alternative strategy to the efficient strategy. The descriptive analysis approach analysis is conducted with SPSSWIN to conduct reliability test, factor analysis, correlation analysis, cross-tabulation analysis, one-way ANOVA, and multiple regression analysis. However, there were some limitations of the survey such as the rigidity of concept about the technical factors and various market management factors. The wishes is that the decision-maker could be utilized these defence industrial factors to formulate efficient defence policy and strategy in the future.

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