We investigated the correlation between density of air and the infection rate of airborne microorganisms in mushroom cultivation facilities and found that the correlation was low in places where the infection rate during cultivation was less than 1%. The farms with an infection rate of 2~5% showed a high infection rate in the inoculation room in spring and summer seasons, and in the incubation room in autumn, and the farms with an infection rate of more than 6% showed infection in all the rooms regardless of the season. The farms where the Trichoderma sp. was investigated at the time of the mushroom cultivation showed the highest infection rates of 3.17%, 2.74%, and 2.64% in summer, spring, and autumn, respectively. The farms infected with Neurospora tetrasperma showed a lesser rate of infection than the ones infected with Trichoderma sp., and the highest infection rate of 0.56% was observed in summer. Based on these results, the type of infection could be classified into five groups, where type I was farms where the infection rate is less than 1% in all seasons. Three farms belonged to this type, and the infection rate in this type was lower than that in the other types.

Background: The bridge exercise targets the gluteus maximus (Gmax) and gluteus medius (Gmed). However, there is also a risk of dominant hamstring (HAM) and erector spinae (ES) muscles. Objects: To analyze the muscle activity the of Gmax, Gmed, HAM and ES during the bridge exercise with and without hip external rotation in different degrees of knee flexion. Methods: Twenty-three subjects were participated. The electormyography (EMG) activity of the Gmax, Gmed, HAM and ES muscles was recorded during the exercise. The subjects performed the bridge exercise under four different conditions: (a) with 90˚ knee flexion, without hip external rotation (b) with 90˚ knee flexion, with hip external rotation (c) with 135˚ knee flexion, without hip external rotation (d) with 135˚ knee flexion, with hip external rotation. Results: There was no significant interaction effect between the degree of knee flexion and hip external rotation. There was a significant main effect for degree of knee flexion in Gmax, HAM muscles activity. Gmax muscle activity was significantly greater in the 135˚ knee flexion position than in the 90˚ knee flexion position (p<.001). While HAM muscle activity was significantly less in 135˚ knee flexion position than in the 90˚ knee flexion position (p<.001). ES muscle activity was significantly less in the 135˚ knee flexion position than in the 90˚ knee flexion position (p=.002). The activity of both the Gmax and Gmed muscles was significantly greater with hip external rotation (p<.001 and p=.005, respectively). Conclusion: For patients performing the bridge exercise, positioning the knee in 135° of flexion with hip external rotation is effective for improving Gmax and Gmed muscle activity while decreasing HAM, and ES muscle activity.

Trifolium pratense leaves (red clover) has been used in Oriental and European folk medicine for the treatment of whooping cough, asthma, and eczema, and is now being used to treat and alleviate the symptoms, such as hot flushes, cardiovascular health effects that occur in postmenopausal women. However, relatively little scientific data is available on the physiological activity of this plant. Therefore, in this study, we investigated the anti-cancer activity of T. pratense leaves using methanol extract of T. pratense leaves (MeTP) on human FaDu hypopharyngeal squamous carcinoma cells. MeTP inhibited the viability of FaDu cells by inducing apoptosis through the cleavage of procaspase- 3, -7, and -9 and poly (adenosine diphosphate ribose-ribose) polymerase (PARP), downregulation of Bcl- 2, and upregulation of Bax, as determined by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, Live & dead assay, 4’6-diamidino-2-phenylindole stain, fluorescence-activated cell sorting analysis, and Western blot analysis. In addition, colony formation was slightly inhibited when FaDu cells were treated with a non-cytotoxic concentration (0.125 mg/mL) of MeTP and almost completely inhibited when cells were treated with 0.25 mg/mL MeTP. Collectively, these results indicate that MeTP induced cell apoptosis via caspase- and mitochondrial-dependent apoptotic pathways, and inhibited colony formation of cancer cells in FaDu human hypopharyngeal squamous carcinoma cells. These findings suggest MeTP should be considered for clinical development as a chemotherapeutic option in oral cancer.

This paper presents a numerically robust algorithm to construct a Voronoi diagram of circles in the plane. The circles are allowed to have intersections among them, but one circle cannot fully contain another circle. The Voronoi diagram is a tessellation of the plane into Voronoi regions of given circles. Each circle has its Voronoi region which is defined by a set of points in the plane closer to the circle than any other circles. The distance from a point p to a circle ci of center pi and radius ri is ||p-pi||-ri, which is the closest Euclidean distance from p to the circle boundary. The proposed algorithm first constructs the point Voronoi diagram of centers of given circles, then it enlarges each point to the circle and expands its Voronoi region accordingly. This region-expansion process is done by local modifications and after completing this process for the whole circles the desired circle Voronoi diagram can be obtained. The proposed algorithm is numerically robust and we provide with a few examples to show its robustness. The algorithm runs in O(n2) time in the worst case and O(n) time on average where n is the number of the circles. The experiment shows that the region-expansion algorithm is robust and runs fast with strong linear time behavior.

초등학교 저학년 학생은 고학년, 청소년, 성인과 달리 컴퓨터 및 게임 환경에 익숙하지 않으면서 교육용 게임 컨텐츠를 스스로 사용하기 시작한다. 따라서 교육용 게임의 몰입을 통한 학습 능력 향상을 유도하기 위해서는 해당 연령의 인지적, 지각적 능력 특성 및 경험과 지식, 이해와 선호도에 대한 구체적인 조사를 바탕으로 특별한 UX 디자인 설계가 필요하다. 본 연구는 초등학교 저학년 학생들을 대상으로 교육용 게임의 몰입에 영향을 미치는 디자인 측면의 요인 대해 조사하고자 하였다. 분석 사례로는 공영방송인 EBSmath 교육용 게임 중 교구를 사용한 게임들을 선정하였다. 게임 분야의 몰입에 대한 문헌 고찰을 통해 미디어 사용 과정에 몰입에 영향을 미치는 디자인 관련 변인들을 정리한 후 이 변인들을 중심으로 대상 게임을 직접 사용하며 심층 인터뷰를 실시하였다. 연구의 결과 사용자의 몰입에 영향을 미치는 디자인 측면의 설계 요인으로 학습 성취, 매력(간접 경험, 시각, 청각, 조작감), 상호작용성의 세 가지에 대한 구체적인 특성을 정리하였다. 본 연구의 결과는 미숙한 사용자의 직접적인 반응과 표현들, 개선 요구사항들 직접 수집함으로써 매우 구체적인 디자인 지침으로 사용될 수 있는 실용적인 의의가 있다.

The current study examined the validity of classroom-based English assessment in the elementary school context using a validity analysis framework, which includes cognitive, instructional, and inferential validity components. As a case study, it evaluated two unit achievement tests administered to 142 6th grade students. Three types of data (i.e., the curricular learning goals, instructional contents covered for the two units, and two unit achievement tests and scores) were collected and analyzed for the classroom-based assessment validity argument. Results revealed that the two tests were relevant to the curriculum and instruction; however, there was a lack of correspondence between the two tests and the curriculum (cognitive validity); moreover, the instructional contents were not sufficiently covered with representative test items (instructional validity). While the test items functioned as expected, students showed a wide range of achievement, which was not expected in the achievement test context (inferential validity). The findings suggest implications for the development and use of classroom-based assessment for young language learners.

Graphene and Fe3O4 were bound by electrostatic attraction and prepared by effective reduction through microwave treatments. As a result of fabricating graphene with Fe3O4 as a composite material, it has been confirmed that it contributes to the structural improvement in graphene stabilization and at the same time, it shows improved electrochemical performance through improved charge transfer. It was also confirmed that the crystalline Fe3O4 was uniformly dispersed in the rGO sheet, effectively blocking the reaggregation due to the van der Waals interaction between the neighboring rGO sheets. The structural analysis of prepared composites was confirmed by transmission electron microscopy, and X-ray diffractometer. Electrochemical properties of composites were studied by cyclic voltammetry, galvanostatic charge–discharge curves, and electrochemical impedance spectroscopy. The Fe3O4 (0.4 M)/rGO composite showed a high specific capacitance of 972 F g−1 at the current density of 1 A g−1 in 6 M KOH electrolyte, which is higher than that of the pristine materials rGO (251 F g−1) and Fe3O4 (183 F g−1). Also, the prepared composites showed a very stable cyclic behavior at high current density, as well as an improvement in comparison with pristine materials in terms of resistance.

In this study, activated carbon with well-developed mesopores was fabricated using kenaf short fibers as a representative biomass. Concentrated phosphoric acid was selected as an activation agent to create highly developed porous structures, and pore development was observed to occur in relation to the weight ratio of phosphoric acid and kenaf. The pore characteristics of the kenaf-based activated carbon were determined using the N2/ 77K adsorption isotherm, and its microcrystalline structure was analyzed using X-ray diffraction. The highest specific surface area (1570 m2/g) was observed when the weight ratio of phosphoric acid to kenaf was 3:1, and the highest mesopore fraction (74%) was observed at 4:1. The carbonization yield was 45–35%, which is higher than that of commercial activated carbon. The production of porous carbon material by this method offers high potential for application because it can be controlled over a wide range of average pore diameter from 2.48 to 5.44 nm.

These days, costumes of Korean creative dancing performances have been changed to be modernized and to be out of traditional regulation, as the representation of the Korean styles were replaced by other props and art devices. In this article, we have applied the emotions expressed in Jin-Yi Hwang’s sijos (Korean traditional poems), to Korean creative dancing costumes in modern style. chose three typical sijos from her six pieces, titled “Green mountain is like what I’ve meant”, “To Byeokgyesoo in Cheongsan-ri” and “Dongjibam ginaginbam”. In brief, Jin-Yi Hwang expressed her “everlasting love and emptiness”, “temptative conciliation” and “eager waiting” these three sijos, respectively. The character of Jin-Yi Hwang was shown in many TV soap operas and films, and the costumes were either much modernized, and not accurately based on the sijos she had written. Thus, we designed, made flat sketched, and fabricated three Korean creative dancing costumes from the three sijos, listed. We tried to highlight the aesthetic impression and the activeness of the dancing costumes, using both traditional and modern Korean fabrics. Since Korean dance costumes had not yet been inspired from Jin-Yi Hwang’s sijos, we discussed the importance of the fabric items, as well as the visual, auditory, and tactile characteristics of the costumes and dancers to emphasize Jin-Yi Hwang’s expressed emotions.

The spray characteristics of two working fluids operating with a bi-fuel injector were investigated. A bi-fuel injector simultaneously sprays two working fluids, both of which possess different properties. An effervescent atomizer containing two separated aerator tubes was employed as the bi-fuel injector. Vegetable oil and kerosene were the working fluids. The mixing ratio and ALR were the experimental parameters. The mixing ratio is the mass fraction of vegetable oil in the total amount of working fluids. The ALR represents the ratio of the atomizing gas to the working fluid mass flow ratio. In order to examine spray characteristics, the spray angle, droplet size distribution, cumulative volume fraction, Sauter Mean Diameter and span factor were measured using a high resolution video camera and a Laser Diffraction Particle Analyzer. From the experimental results, spray angle is decreased with as the ratio of kerosene to vegetable oil in working fluid is increased. Regardless of ALR, SMD was the smallest when the only working fluid was kerosene and uniformity was the most stable when the only working fluid was vegetable oil.

Discarding juvenile fishes under girth 16 cm nearly equal to inner perimeter of codend mesh size collected by a cover net method in bottom trawl. The body size of the main five species (mackerel, horse mackerel, sea bream, melon seed and black throat seaperch) was measured for their body length, girth, weight, height and width and analyzed size selectivity. Frequency of penetrating fish as retention in a cover net was less than 40% of total number of juvenile discarding fish. The most of body length or girth of five species were significantly different between in the codend and in the cover net. The 50% selection girth in the cover net ranged 8-11 cm were smaller than those in the codend ranged 9-13 cm by the species respectively. The 50% selection body length was significantly related with the ratio of body height (H) by body width (W) both for in the codend or in the cover net while 50% selection girth was not significantly related with H/W. Furthermore 50% selection fish size by fish species between in the codend and in the cover net was not significantly different both in body length or girth. Therefore, the girth selectivity represented possibly as one unique value regarding fish body shape was considered as more useful method for multi-species catch in trawl.

This article discusses the nature of Korean classical Chinese texts, or Sino-Korean texts and pays attention to the need for compiling various reference works in pre-modern Korean studies. And it suggests that the introduction of Digital Humanities to the field is necessary and discusses the conditions for successful Digital Humanities in the field. Due to the ambiguity and complexity of Sino-Korean texts, students of the field need various reference works to refer to for a clear understanding of the texts. It is recently and widely accepted as an urgent task to compile various reference works for Korean studies, ranging from linguistic and term dictionaries to encyclopedias. However, since the number of people who want to use paper dictionaries and reference books continues to reduce, reference work projects for Korean studies need to consider changing the direction. Adopting the Digital Humanities methods in the whole process of the projects can bring promptness, accuracy, and up-to-date-ness to the projects, and enable the field to extend the territory and maximize versatility. In doing so, the projects of reference work for Korean studies can continue to contribute to the development of Korean studies. It can also be used as a useful cultural content on the Internet. There are two issues to take into consideration regarding adopting Digital Humanities for reference work making for Korean studies. One is fostering editors and project managers of Digital Humanities projects for Korean studies; the other is to establish a standard for reference work making projects for effective communication, project planning & evaluation, and manpower training, etc.

2015년 4월 25일 네팔 카트만두 인근 고르카에서 진도 7.8의 강진이 있었고, 9000명에 가까운 희생자가 나왔고, 60만 채의 건물이 손상을 입었다. 이 연구는 이전 다른 국가들에서의 대응과 여러 면에서 달랐던 네팔의 한국인 타문화권 사역자들이 지진 피해를 어떻게 대응했는지를 살펴보았다. 이 질문에 답하기 위해 다음 3가지 질문들을 했다. 과연 2015년 네팔 지진의 영향은 어느 정도였는가? 네팔 어부회는 큰 자연 재해 뒤에 무엇을 했는가? 이 자연 재앙에 대응한 네팔 어부회의 활동의 특징들은 무엇인가? 이상의 질문들을 통해 이 연구는 네 가지 특징들을 발견할 수 있었다. 이들은 깊은 공동체 의식을 가지고 있었고, 의사소통을 일원화 했고, 구호와 복구 활동에서 교회보다는 지역 사회를 우선했고, 현대 온라인 통신 수단을 효과적으로 사용했다.

기독교는 본질적으로 성육신된 그리스도의 형상대로 참된 인간 그리고 공동체로서 존재하는 육신적(incarnational) 방식의 종교이다. 그러나 교회의 탈육신적(excarnational) 경향 — 특히 찰스 테일러의 책 『세속의 시대』에서 처음 제기되었던 이슈 — 은 21세기에 디지털화, 사이버화, 가상화, 그리고 사이보그화의 요소들로 인하여 더욱 문제화 되고 있다. 그러므로 이 논문에서 제안하는 것은 특히 사이버공간과 가상현실의 영역들 안의 탈육신적 철학과 응용들을 반하는 방식으로 성육신된 그리스도가 본이 되신 참되고 “육신화된 혼”(embodied soul), 또는 “영혼화된 몸”(ensouled body) 패러다임의 기독교로 귀환하는 것이다. 선교적 함축은 사이버공간을 가상의 영역으로 이해해야 한다는 것이고, 사이버공간 안에 소외되고 또는 사로잡힌 현세대의 탈육신된 마음과 혼, 특히 의식을 건져내기 위하여 사이버공간 안으로 전략적 침투를 해야 한다는 것이다.

Despite the recognized importance of morphological knowledge to literacy outcomes such as vocabulary knowledge and reading comprehension, two of its subconstructs— morphological awareness and morphological processing—have received comparatively little attention. In response, the aim of the study reported here was to examine how the relationships between morphological awareness and morphological processing, especially in terms of morphological transparency and morphological frequency, contribute to the vocabulary knowledge and reading comprehension of 62 native Korean-speaking secondary school students—27 eighth-graders and 35 tenth-graders— learning English as a foreign language. The students’ performance on the Test of Morphological Structure and the Word Reading Test was assessed to gauge their compounding awareness, inflectional awareness, vocabulary knowledge, and reading comprehension. The results indicated that the students’ performance was varied depending on morphological transparency and frequency. In addition, it was not morphological processing, but rather morphological awareness that explained variances in vocabulary knowledge and reading comprehension, when compounding awareness and inflectional awareness were controlled for. This paper discusses what such findings imply for teaching English as a foreign language to Korean learners.

When social media users post their opinion on social media, they might expect to receive a favorable evaluation from others (e.g., ‘like’ on Facebook and ‘heart’ on Instagram). On the contrary, when users read and evaluate other’s posts, they are less likely to care about others. What’s more, if users spend more time on social media, posting would make them more care about others. This research answers the question ‘Does social media interaction alter the way we perceive value and affect different choice? Three studies show 1) how social media interaction affects consumers’ luxury value perception and the mediating role of social media self-view (interdependent vs. independent self), 2) how main effect and mediated relationship are different between two groups divided by participants’ time spent on social media (high vs. low: ±1 SD) and 3) how the type of social media interaction (post vs. “like”) affects handbag choice between social and functional luxury-superior option.