• Title/Summary/Keyword: hunting

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Selection of the Rubbing Trees by Wild Boar (Sus scrofa) and its Ecological Role in a Mixed Forest, Korea (혼효림에서의 멧돼지(Sus scrofa) 비빔목 선택과 생태적 역할)

  • Lee, Seong-Min;Lee, Woo-Shin
    • Journal of Korean Society of Forest Science
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    • v.103 no.3
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    • pp.510-518
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    • 2014
  • Conflicts between humans and wild boars (Sus scrofa) have increased because of causing crop damage and appearing in downtown. Management to reduce population size has mostly been implemented on pests, but knowledges about ecological values are very rare. Rubbing trees by wild boar was investigated to figure out characteristics and for management ecologically from July to October 2013 in a mixed forest, Geochang, Gyeongnam Province, Korea. Pinus rigida was most frequently founded, and rubbing trees, both conifers and deciduous, were mainly located in 200~600 m above sea level. DBH was no significant difference between rubbing and control trees. The use intensity of conifers was higher than that of deciduous. The coverage of foliage layers and the number of woody plants within a radius of 2.5 m of trees (rubbing and control) were also investigated and compared to determine ecological characteristics. There were 1,332 individuals founded from 25 families. In the coverage of foliage layers, the understory and midstory showed statistically significant, but not in the subover and overstory. The number of Shrubs and saplings are higher in rubbing trees than those of control, but no difference in stems. Total individuals, the number of species, species diversity index(H') within a radius 2.5 m is considerably higher in rubbing trees with high intensity than those of low intensity and control. Our results show that wild boar mainly selected and used conifers more frequently as rubbing trees. Wild boar also modified the physical environments around rubbing trees. Consequently, the positive effects such as species diversity is increase. Thus the conservation policies is required after the intensive population reduction every 3-4 years for forest ecological management rather than annual sustainable hunting.

A Study on Ancient Korean Clothing and Ornaments Through Official Chinese History - focusing on hat and hair style - (중국정사(中國正史) 조선전(朝鮮傳)의 한국(韓國) 고대복식(古代服飾) - 관(冠)과 수발(修髮)을 중심으로 -)

  • Kim, Jin Seon;Koh, Bou Ja
    • Journal of the Korean Society of Costume
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    • v.64 no.1
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    • pp.106-122
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    • 2014
  • This study is based on the official Chinese history of the ancient Korean(中國正史朝鮮傳) clothing and ornaments, and also tries to discover, study, and adjust the system of the ancient Korean clothing and ornaments. Ancient Korea has very poor official records of its clothing and ornaments. Therefore, this study had no choice but to rely on the official Chinese history to cover for the lack of resources. The official Chinese history documents are not only important for studying ancient Korean history, but also important for studying about the ancient Korean clothing and ornaments. This research selected historical documents about the ancient Korean clothing and ornaments from fifteen different Chinese dynasties' official documents, and then systematically classified the documents in order to compare them. All these processes confirmed the following subjects. In regards to the Kwan(冠: general hat), the hat types included Check, Byun(弁), Jeol-poong(折風), Jowoo-Kwan(鳥羽冠), So-gol(蘇骨), and Na-kwan(羅冠). These Kwan(冠) were influenced from Chinese clothing and ornaments. Gold and silver decorations on the Kwan(冠) were influenced from the Scythai culture. The feather decorations on the hat were residual of the bird worshiping culture or the hunting lifestyle. These things show that the ancient Korean clothing and ornaments originated the clothing and ornaments from the North. But the use of Jo-woo(bird feather) was common around the globe in many ways during the ancient times, regardless of area and period. The official Chinese history describes men's hair style as Choo-gyul (椎結) or sometimes pronounced, Choo-gyul(椎結). These seem to describe the topknot. Women had various types of hair styles such as Yu-byun-bal-su-hu (wear women's hair in a braid). The official Chinese history show that the ancient Korean clothing and ornaments originated the clothing and ornaments from the north. The ancient Korean clothing and ornaments influenced and were influenced by its neighboring countries.

A Review of the Neurocognitive Mechanisms of Number Sense (수 감각의 인지신경학적 기반에 관한 연구 개관)

  • Cho, Soohyun
    • Korean Journal of Cognitive Science
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    • v.24 no.3
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    • pp.271-300
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    • 2013
  • Human and animals are born with an intuitive ability to determine approximate numerosity. This ability is termed approximate number sense (hereafter, number sense). Evolutionarily, number sense is thought to be an essential ability for hunting, gathering and survival. According to previous research, children with mathematical learning disability have impaired number sense. On the other hand, individuals with more accurate number sense have higher mathematical achievement. These results support the hypothesis that number sense provides a basis for the development of mathematical cognition. Recently, researchers have been examining whether number sense training can lead to enhancement in mathematical achievement and changes in brain activity in relation to mathematical problem solving. Numerosity which basically represents discontinuous quantity is expected to be closely related to continuous quantity such as representations of space and time. A theory of magnitude (ATOM) states that processing of number, space and time is based on a common magnitude system in the posterior parietal cortex, especially the intraparietal sulcus. The present paper introduces current literature and future directions for the study of the common magnitude system.

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Age Dating and Paleoenvironmental Changes of the Kunang Cave Paleolithic Site

  • Yum, Jong-Kwon;Lee, Yung-Jo;Kim, Jong-Chan;Kim, In-Chul;Kim, Ju-Yong
    • The Korean Journal of Quaternary Research
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    • v.17 no.2
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    • pp.145-148
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    • 2003
  • The Kunang cave paleolithic site is located at Tanyang [$N37^{\circ}2'$, $128^{\circ}21'E$], Chungbuk Province, which is in the Central part of the Korean peninsula. The cave is developed at 312 amsl in a karstic mountainous area. The South Han River flows across this region and other caves can also be found near the river. The site was discovered in 1986 and excavated 3 times by the Chungbuk National University Museum until now. The cave was wellpreserved from modem human activities until the first discovery. The full length of the cave is estimated to be ca. 140 m. However, a spacious part up to 11 m from the entrance has been excavated. Eight lithological units are divided over the vertical profile at a depth of 5 m. Each unit is deposited in ascending order as follow: mud layer (Unit 9), lower complex (Unit 8) which is composed of angular blocks and fragments with a muddy matrix, lower travertine layer (Unit 7; flowstone), middle complex (Unit 6; cultural layer) which is composed of fragments with a muddy matrix, middle travertine layer (Unit 5; flowstone), yellowish muddy layer (Unit 4), upper complex (Unit 3; cultural layer) which has a similar composition to Unit 8. the upper travertine layer (Unit 2; flowstone), and finally surface soil layer (Unit 1). The most abundant vestiges in the cultural layers are the animal bones. They are small fractured pieces and mostly less than 3 cm in length. About 3,800 bone pieces from 25 animal species have been collected so far, 90 percent of them belonging to young deers. Previous archaeological study of these bone pieces shows thatprehistoric people occupied the cavenot for permanent dwelling but for temporary shelter during their seasonal hunting activity. More extensive studies of these bones together with pollen analysis are in progress to reconstruct the paleoenvironment of this cave. Only a single date (12,500 BP) obtained from a U-Th measurement of the upper travertine layer was previously available. In spite of the importance of the cave stratigraphy, there was no detail chronological investigation to establish the depositional process of the cultural layers and to understand the periodic structure of the cave strata, alternating travertine floor and complex layers. We have measured five 14C age dating (38900+/-1000, 36400+/-900, 40600+/-1600, more than 51000 and 52000 14C BP) using Seoul National University 14C AMS facility, conducted systematic process of the collagen extraction from bone fragments samples. From the result, we estimate that sedimentation rate of the cave earth is constant, and that the travertine layers, Unit 2 and Unit 3, was formed during MIS 5a(ca. 80 kBP) and MIS 5c (ca. 100 kBP) respectively. The Kunang Cave site is located at Yochonli of the region of Danyang in the mid-eastern part of Korea. This region is compased of limestones in which many caves were found and the Nam-han river flows meanderingly. The excavations were carried out three times in 1986, 1988, and 1998.

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Proposal of Security Orchestration Service Model based on Cyber Security Framework (사이버보안 프레임워크 기반의 보안 오케스트레이션 서비스 모델 제안)

  • Lee, Se-Ho;Jo, In-June
    • The Journal of the Korea Contents Association
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    • v.20 no.7
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    • pp.618-628
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    • 2020
  • The purpose of this paper is to propose a new security orchestration service model by combining various security solutions that have been introduced and operated individually as a basis for cyber security framework. At present, in order to respond to various and intelligent cyber attacks, various single security devices and SIEM and AI solutions that integrate and manage them have been built. In addition, a cyber security framework and a security control center were opened for systematic prevention and response. However, due to the document-oriented cybersecurity framework and limited security personnel, the reality is that it is difficult to escape from the control form of fragmentary infringement response of important detection events of TMS / IPS. To improve these problems, based on the model of this paper, select the targets to be protected through work characteristics and vulnerable asset identification, and then collect logs with SIEM. Based on asset information, we established proactive methods and three detection strategies through threat information. AI and SIEM are used to quickly determine whether an attack has occurred, and an automatic blocking function is linked to the firewall and IPS. In addition, through the automatic learning of TMS / IPS detection events through machine learning supervised learning, we improved the efficiency of control work and established a threat hunting work system centered on big data analysis through machine learning unsupervised learning results.

Effect of the Spportive Project for the Priority Region of Educational Welfare Investment[SPPREWI] on School Children's Psychosocial and Cognitive Adjustment (교육복지투자우선지역 지원사업이 아동.청소년의 사회.정서 및 인지적 발달에 미치는 효과)

  • Jung, Yeon-Jung;Um, Mung-Yong
    • Korean Journal of Social Welfare
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    • v.61 no.4
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    • pp.5-33
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    • 2009
  • This study attempted to evaluate the effectiveness of the Supportive Project for the Priority Region of Educational Welfare Investment(SPPREWI) which has been put into action in Korea as a part of national policies for poor school children. In so doing this study aimed to test SPPREWI's legitimacy as well as whether we have to continue this program or not. In order to fulfill this research purpose researchers identified several outcome indicators of SPPREWI, which represent psychosocial and cognitive adjustment. The variables pertaining to psychosocial adjustment domain are: self-concept; depression, anxiety, and suicidal impulse; inclination of assault and indignation; delinquency; school life adjustment; and change in social relations. The variables of cognitive adjustment include recognition of self-control in learning; control strategy of learning behavior; and preparedness for job hunting. In this study the quasi-experimental group contained students from schools which are under the SPPREWI. The control group was composed of students from schools which were free from SPPREWI but under the influence of deteriorating school environment. The quasi-experimental group and the control group were compared in terms of outcome indicators presented earlier. Within the quasi-experimental group both the students below poverty-line and the students above poverty-line were divided into two groups each by the level of service use, and were compared in terms of the outcome variables presented earlier. Study results supported the argument that SPPREWI was effective generally in improving students' school adjustment. Study results also showed that the variable of 'school nurturance' played a significant role in moderating the effect of SPPREWI on a couple of outcome variables specially when schools' overall educational environment was in poor condition. Implication as well as suggestion were presented on the basis of study findings.

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A Study on the Lateral Vibration Reduction of the High-speed Electric Multiple Unit (동력분산형 고속열차의 횡방향 진동저감에 관한 연구)

  • Jeon, Chang-Sung;Park, Joon-Hyuk;Kim, Sang-Soo;Kim, Seog-Won
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.12
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    • pp.797-803
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    • 2019
  • This study was carried out to reduce the lateral vibration of high-speed electric multiple units. In the study, the high-speed electric multiple unit prototype (HEMU-430X) has a high lateral vibration at low equivalent conicity regardless of the wheel profiles (XP55, GV40, S1002). As wheel wear progresses and the equivalent conicity increases, the lateral vibration tends to decrease. The reason is that a combination of the suspension characteristics causes the body and bogie to resonate at a frequency of 1.4 Hz when the equivalent conicity is low, resulting in body hunting. An investigation of the lateral vibration of overseas high-speed trains showed that a decrease in the hydraulic stiffness of the yaw damper could improve the vibration. The series stiffness of the yaw damper is a combination of the hydraulic stiffness and elastic joint. In this study, an attempt was made to improve the lateral vibration by lowering the stiffness of the elastic joint. The series stiffness of the adjusted yaw damper was approximately 60% compared to the original one. The on track test results showed improvement in the lateral vibration for both running directions. The vibration reduction method of this study can be used for EMU-250 and EMU-320 in future commercial operations.

Fine Structure of the Silk Spigots in the Spider Dolomedes sulfureus (Araneae: Pisauridae) (닷거미과의 황닷거미(Dolomedes sulfureus)의 실크 분비장치의 미세구조)

  • Moon, Myung-Jin
    • Applied Microscopy
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    • v.38 no.2
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    • pp.89-96
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    • 2008
  • Dolomedes spiders of the family Pisauridae are one of free wandering spiders with semi-aquatic habitation. They do not build web for prey-hunting but build a nursery web for spiderlings. This paper describes the fine structure of the silkspinning spigots of the fishing spider Dolomedes sulfureus revealed by the field emission scanning electron microscope (FESEM). The fishing spider Dolomedes sulfureus possesses only three types of silk glands which connected through the typical spinning tubes on the spinnerets. The silk spigots of this spider were identified as three groups: ampullates, pyriforms and aciniforms. Two pairs of major ampullate glands send secretory ductules to the anterior spinnerets, and another two pairs (or $1{\sim}2$ pairs in males) of minor ampullate glands supply the middle spinnerets. In addition, the pyriform glands feed silk into the anterior spinnerets ($62{\sim}68$ pairs in females and $45{\sim}50$ pairs in males), and the aciniforms send ductules to the middle ($33{\sim}40$ pairs in females and $18{\sim}25$ pairs in males) and the posterior spinnerets ($42{\sim}50$ pairs in females and $24{\sim}28$ pairs in males). Among these, the ampullate one is the most predominate gland in both sexes.

Factors affecting Crop Damage by the Wild Boar (Sus scrofa) : A case study in Geochang County, Gyeongnam Province, Korea (멧돼지(Sus scrofa)에 의한 농작물 피해 요인 분석 -경남 거창군 사례를 중심으로-)

  • Lee, Seong-Min;Lee, Eun-Jae;Park, Hee-Bok;Seo, Chang-Wan
    • Korean Journal of Environment and Ecology
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    • v.32 no.2
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    • pp.140-146
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    • 2018
  • Wild boars have expanded their habitats in Korea in recent years and caused serious social problems such as crop damage and appearance in urban areas. This study was carried out from May to October 2012 to investigate the environmental factors that affect crop damage based on actual cases reported in Geochang County of Gyeongnam Province, Korea. The analysis showed that the damages by wild boars occurred mainly between August and September, and rice was damaged most often while sweet potatoes were damaged most intensely. The results indicated that the damages were related to the wild boars' preference of crop and the seasonal availability of crops. Other factors that affected the crop damage included the slope, the topographic relief, and the distances from forest, stream, road, and residential area. There was no significant difference of environmental factor according to damage intensity, suggesting that the wild boars tended to attack the same cropland repeatedly and thus accumulating the damage. Our study suggests that reducing crop damages by wild boars will require cultivating crops less preferred by wild boars, installing electric fences, and controlling wild boar population with hunting and trapping.

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

  • Hughes, Jessica
    • Cross-Cultural Studies
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    • v.28
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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.