Elateroidea is a large taxonomic group with ~24,000 described species and interesting from the evolutionary point of view because of bioluminescence, neoteny and mimicry present in distantly related lineages. In the currently established higher-classification of Elateroidea, many lineages were transferred from three different superfamilies, Artematopoidea, Elateroidea and Cantharoidea, by both morphology- and/or molecular-based phylogenetic studies. We herein review on the phylogenetic history of Elateroidea and also prospect to construct of its robust phylogenetic hypothesis among Elateroid lineages.

화랑곡나방 유충(Plodia interpunctella)에 대해 기피력을 갖는 팔각회향 에센셜 오일을 혼입한 폴리우레탄계 코팅액 제조 기술을 이용해 식품용 방충 다층필름 제작하고 유충에 대한 필름의 기피효과를 측정하였다. 방충 물질을 선정하기 위해, 총 9 종류의 에센셜 오일을 스크리닝하였으며 팔각회향이 가장 우수한 기피효과를 보였다. 이를 방충 물질로 선정하여 폴리우레탄계 코팅액을 제조하고, 제조된 코팅액을 polyethylene terephthalate 12 μm 필름 표면에 코팅하였다. 방충 물질이 코팅된 필름은 polypropylene 30 μm을 적층하여 다층필름으로 제조하였으며, 개발된 필름의 화랑곡나방 유충에 대한 기피력 측정이 진행되었다. 기피테스트 결과, 대조군 필름은 유충에 대한 기피 효과를 보이지 않은 반면 개발된 방충 필름은 보다 지속적인 기피 효과를 보였다. 따라서, 본 연구는 식품 포장재에 적용 가능한 표면코팅기술을 개발하고 그 방충 효과를 입증함으로써 식품 중 곤충 이물 저감화를 위한 식품포장기술 발전에 기여할 것이다.

It is noted that chalcone derivatives have characteristic diverse pharmacological properties, and that precise evidence has been growing that they could regulate a tumor necrosis factor-α (TNF-α) induced insulin resistance. The purpose of the present investigation is to elucidate the effects of the identified chalcone derivatives on adipogenesis, and to find the underlying mechanism of action in that case. Consequently, we first investigated whether the chalcone derivatives could affect the identified PPARγ-induced transcriptional activity on the proliferator-activated receptor response elements (PPRE) at target promoters, and find that trans-chalcone most significantly increased the PPARγ -induced transcriptional activity. Additionally, we confirmed that there were up-regulatory effects of trans-chalcone during the adipogenesis and lipid accumulation, and on the mRNA of adipogenic factors in 3T3-L1 cells. Next, we examined the effect of trans-chalcone on the inhibition induced by TNF-α on adipogenesis. To that end, we noted that the treatment with trans-chalcone attenuated the effect of TNF-α mediated secretion of various adipokines that are involved in insulin sensitivity. For this reason, we noted that this study clearly demonstrates that trans-chalcone enhanced adipogenesis, in part, by its potent effect on PPARγ activation and by its reverse effect on TNF-α.

본 연구는 한국 회사에서 개발된 보드 게임 장르의 주사위 게임 “디즈니 매지컬 다이스”에서 나타나는 미 국의 디즈니 캐릭터들의 성별 분석을 실시한다. 한국의 게임 회사 넷마블이 디즈니 캐릭터들의 판권을 구입한 뒤, 모바일 플랫폼으로 디즈니 캐릭터들이 있는 주사위 게임을 출시하였다. 게임을 하면서, 플레이어들은 특정 디즈니 캐릭터들을 선택하고 주사위 게임 내에서 다른 플레이어들과 경쟁을 하며, 플레이가 파산하면 게임을 이기게 된다. 이 게임의 특징은 전 세계 사람들과 같이 할 수 있는 장점이 있다. 구체적으로, 본 연구는 디즈 니 매지컬 다이스의 디즈니 캐릭터들을 비판적으로 성별 분석을 하는데 1) 출연 (어떻게 캐릭터들이 다르게 출연하는지) 2) 능력치 (어떻게 캐릭터들이 다른 능력치를 가지고 있는지) 3) 랭킹 (순위표에서 어떻게 캐릭터 들이 순위 되어있는지)로 분석한다. 이를 통해, 현실 세계처럼 중요한 이슈인 성별 분석을 비디오 게임에서 할 뿐만 아니라, 성별, 나이, 지역 등과 상관없이 인기 있는 장르인 보드 게임의 다양한 특징들을 탐구한다.

According to a recent survey of the stress recognition levels felt by teenagers, 34.9% experienced ' sad or frustrated ' levels with their daily lives being disrupted by more than two weeks in a row and it turned out that the older you are, the higher your stress perception levels are.(청소년백서, 2014). Jeju Island has eight regular high schools (27%) among 30 schools. Middle school students in Jeju are experiencing relatively high admission stress compared to other regions in order to enter regular high schools in the level equalization zone. High school students are also experiencing a higher level of academic awareness in college admissions by the academic reports, adding to the academic stress. Appropriate stress for adolescents provides new stimuli, gives motivation and energy, and can lead to the rehabilitation of learning, however, stress builds up when they are unable to deal with it on their own, leading to experiences of physical and psychological maladaptation as well as drug abuse, delinquency, maladjustment, school violence and suspension.

Teeth and bones are highly mineralized tissues containing inorganic minerals such as calcium phosphate, and a growing number of evidences show that their mineral content is associated with many diseases. Although the quantification of mineral contents by micro-computed tomography(micro- CT) has been used in diagnosis and evaluation for treating bone diseases, its application for teeth diseases has not been well established. In this study, we attempted to estimate a usefulness of a high-resolution micro-CT in analysis of human teeth. The teeth were scanned by using the Skyscan 1172 micro-CT. In order to measure tooth mineral content, beam hardening effect of the machine was corrected with a radiopaque iodinecontaining substance, iodoacetamide. Under the maximum resolution of 6.6 μm, X-ray densities in teeth and hydroxyapatite standards were obtained with Hounsfield unit (HU), and they were then converted to an absolute mineral concentration by a CT Analyzer software. In enamel layer of cusp area, the mean mineral concentration was about 2.14 mg/mm3 and there was a constant mineral concentration gradient from the enamel surface to the dentinoenamel junction. In the dentin of middle 1/3 of tooth, the mean mineral concentration was approximately 1.27 mg/mm3 and there was a constant mineral concentration gradient from the outer of root to the pulp side, ranging from 1.3 to 1.06 mg/mm3. In decay region of dentin, the mineral content was gradually decreased from the intact inner side to the decayed surface. These results suggest that high-resolution micro-CT can be as a useful tool for non-invasive measurement of mineral concentration in teeth.

1960년대부터 유현목, 김구림 등에 의해 본격적으로 시작됐다고 말해지는 한국 실험영화는 그 저변을 확장하며 명맥을 이어오고 있으나 관련 연구는 많이 부족한 편이다. 현재까지도 한국 실험영화란 과연 무엇인가 그리고 무슨 실험을 해오고 있는가에 대한 명확한 답을 제시하는 연구는 찾기 어렵다. 특히 그 장르의 초기 형성 과정, 과거 한국 여러 예술장르와의 연관성, 빛과 관람 방식 등에 관한 제도와 장치 변천상 그리고 예술적 존재방식에 대한 연구는 극히 부분적으로만 수행되었다. 실험이라는 대단히 추상적인 표현 속에 한국 실험영화는 모호하게 정의 또는 정의 회피되었으며 비주류, 비상업 영화적 특성으로 인해 1000만 관객시대에 걸맞지 않게 한국에서 그 연구와 창작이 외면 받아왔다. 이러한 시점에 본 연구는 한국 실험영화 장르를 이해하고 연구하기 위한 기저가 될 수 있는 관점(Viewpoint)을 질적연구를 통해 탐색해보고자 한다. 실험영화란 과연 무엇이며 여타 장르의 영화들과 어떻게 구별될 수 있는지 또한 어떠한 경로로 누구에 의해 시작되었으며, 그 형성 배경과 과정, 시간 실험의 유형과 여타 장르와의 협력관계 등에 대한 개괄적 고찰을 통해 한국 실험영화 장르를 영화연구 영역의 명확한 자리에 위치시키고, 그 고유한 실험적 원형을 규명해보고자 한다.

We investigated the neural representation of reward probability recognition and its neural connectivity with other regions of the brain. Using functional magnetic resonance imaging (fMRI), we used a simple guessing task with different probabilities of obtaining rewards across trials to assay local and global regions processing reward probability. The results of whole brain analysis demonstrated that lateral prefrontal cortex, inferior parietal lobe, and postcentral gyrus were activated during probability-based decision making. Specifically, the higher the expected value was, the more these regions were activated. Fronto-parietal connectivity, comprising inferior parietal regions and right lateral prefrontal cortex, conjointly engaged during high reward probability recognition compared to low reward condition, regardless of whether the reward information was extrinsically presented. Finally, the result of a regression analysis identified that cortico-subcortical connectivity was strengthened during the high reward anticipation for the subjects with higher cognitive impulsivity. Our findings demonstrate that interregional functional involvement is involved in valuation based on reward probability and that personality trait such as cognitive impulsivity plays a role in modulating the connectivity among different brain regions.

The current study examined the influence of individual trait such as Need-For-Touch level (NFT; high vs. low) and swiping orientation (vertical vs. horizontal) on product evaluation and preference when using touch-screen interface like a smart phone and a tablet. Swiping is one of the most common interaction techniques for changing pages or searching some aligned pictures on touch-screen interface and it can be used in vertical and horizontal orientations. The experiment revealed a significant interaction between swiping orientation and NFT on preference, however the interaction on change-in-price of given products was only marginally significant. To be specific, high NFT participants reported higher preference for horizontal-swipe than vertical-swipe products, but such difference did not occur with low NFT participants. The current study illustrates the influence of swiping orientation and NFT on product preference and it provides a new perspective of design principles especially for online shopping websites.