• Journal of Wetlands Research
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• v.4 no.2
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• pp.13-22
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• 2002

Difference of the inset diversity and community structures between the bog Hwaeom-neup and its surrounding forest of Mt. Wonhyo-san located at Yangsan were investigated. Overall 15 orders, 87 families, 204 genera and 233 species were identified. Hydrophilic Harpalidae species were observed in small number at the bog, while the insect species representing hardwood forest were also collected at the bog. Species diversity was relatively higher at the forest (H'=4.80) than at the bog (H'=4.10). The dominant species was Diplous depressus (Gebler) both at bog as well as at forest. Ground-walking Coleoptera as Carabus sternbergi stembergi Roeschke, Damaster jankowskii jankowskii (Oberthur) and D. depressus was spread from forest into bog. Longhorn beetles Leptura arcuata Panzer and Chlorophorus diadema (Motschulsky) being characteristic species of shrub forest were also observed spreading into bog. It was consequently suggested that the bog was in part progressed into dry succession and its boundary was not clearly defined with forest at least upon the structure of insect commnunity.

• Korean Journal Plant Pathology
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• v.14 no.6
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• pp.563-566
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• 1998

Two soybean cultivars, Kwanggyo and Hwanggeum (soybean mosaic potyvirus (SMV)-resistant cultivars), that had been inoculated with a virulent strain (G-5H, 4) of soybean mosaic potyvirus produced necrotic lesions on inoculated leaves as well as on upper trifoliate leaves. Cells in the lesion area contained sparse numbers of virus particles and very few characteristic pinwheel inclusions. Although a hypersensitive-like cellular response occurred in the two resistant cultivars, this response did not prevent the virus from spreading systemically in these resistant hosts, indicating a different mechanism from the general hypersensitive reaction in relation to host resistance.

• Geomechanics and Engineering
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• v.36 no.3
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• pp.295-301
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• 2024

Understanding the post-liquefaction shear behavior is crucial for predicting and assessing the damage, such as lateral flow, caused by liquefaction. Most studies have focused on the behavior until liquefaction occurs. In this study, we performed undrained multi-stage tests on clean sand, sand-silt mixtures, and silty soils to investigate post-liquefaction shear strain based on soil compressibility. The results confirmed that it is necessary to consider the soil compressibility and the shape of soil particles to understand the post-liquefaction shear strain characteristics. Based on this, an index reflecting soil compressibility and particle shape was derived, and the results showed a high correlation with post-liquefaction small resistance characteristic regardless of soil type and fine particle content.

• Journal of the Korean Institute of Rural Architecture
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• v.11 no.3
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• pp.1-9
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• 2009

Through 'Local Theme Science Museum' aid program that is one of emphasis promotion strategic project by 2007 'Science.Technology.Cultural Project Plan', raises status of scientific technique by national core ability because all people expand base that understand and support scientific technique, and forms a social atmosphere which is scientific technique is important which scientific technique can be spread widely on national life and society whole, and proceeds target that expand local science museum facilities by a base of local science culture spreading and popularization. Accordingly, to plan balanced regional development and utilize to an advanced base of local science culture spreading because offer a science culture experience opportunity to local inhabitants, 'Local theme science museum' project is doing for that establish more 100 science museums for national.public.private institution in whole country until 2012 year. Support 39 projects to 2008 from 1999 thereby, in January, 2009, 13 'Local theme science museum' is opened and operated. This study examined arrangement preferentially about 'Science.Technology.Cultural Project Plan' that is background of 'Local theme science museum' project. Since surveying science museum which is on opening and operation at the present and analyzed actual conditions and facilities and investigated specification necessity and direction of 'Local theme science museum'. Hereafter, to seek plan for propriety of project by characteristic and difference of 'Local theme science museum' is purpose of this study. Now, need set and promotion of following specification direction for right activation of proceeding 'Local theme science museum' by each area. First, differentiation of theme and justifiability of building, Second, propriety of site position, Third, maximization of synergy effect by mixing concept of 'Specialized Economic Zone for Regional Developmental Policy' and Ecomuseum's 'Theme center'.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.26 no.6
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• pp.897-906
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• 2022

In this paper, we propose a novel MAC protocol based on the harmonic transmission of ACK, called HAT-LoRa, for improving the reliability and the utilization in multiple gateway LoRa Networks. LoRa is basically vulnerable to collision due to the primitive pure ALOHA-like MAC. Whereas data frame delivery can be guaranteed by the transparent bridge of multiple receiving gateways, ACK is still transmitted by a single gateway in LoRa Network. HAT-LoRa provides the augmented reception opportunity of ACK via the simultaneous transmissions of identical ACK in multiple spreading factors. The proposed method reduces the expected transmission times of ACK double gateway environment as well as single gateway environment, by 55 and 60% in maximum, by 35% and 40% in average, in a single- and double-gateway environment, respectively. Especially, it outperforms under the environment where the distance between end device and gateways are similar to each other.

• Journal of Fashion Business
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• v.12 no.6
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• pp.11-22
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• 2008

The goal of this study is to provide beauticians with the fundamental material to use effectively heat permanent wave in beauty industry as well as their customer's satisfaction. It carried out an experiment with damaged hair of a woman in her late twenties to investigate the change of physical and morphological characteristics by its water content when performing heat permanent wave. After spreading 0g, 1g, 2g, 3g, and 4g of water on damaged hair respectively, heat permanent wave was treated and the change of hair was observed. The change of physical characteristic was compared through permanent wave form of hair, tensile strength and elongation. The change of morphological characteristic was observed through Scanning Electron Microscope(SEM) and Transmission Electron Microscope(TEM). The result of experiment on the physical specificity revealed that permanent wave form was the most ideal when the water content was 2g, also 3g. Though the materials with much moisture content formed the results were not satisfied. The material with 0g of water content didn't make the wave. In terms of tensile strength and elongation, tensile strength was generally reduced as per the damaged degree of hair. On the contrary, elongation was increased. It observed the changes of morphological characteristic that the damage on hair cuticle was deepen, as its moisture content was decreased, and cuticle's surface was worn away. The observation of fine structure on hair section by transmission electronic microscope also certainly showed the result that damaged hair having experience with chemical treatment had got much damaged to hair cuticle as well as hair cortex. Generally chemical treatment makes hair damaged. Under consideration of this aspect, the ultimate goal of this thesis is to minimize the damage of hair caused by chemical treatment and get the satisfaction on the hair style. According to the result of experiment, the damaged hair whose moisture content was 3g showed the best permanent wave form.

• Cross-Cultural Studies
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• v.25
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• pp.313-336
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• 2011

The objective of this thesis is to unfold Latin American trends overlapping with Korean contemporary novels as an interesting scene in the circle of Korea literature at the beginning of the 21st century. This study was conducted largely in two directions. One is examining how long novel A Guest of Seok-yeong HWANG, a representative realist writer in Korea, and another long novel One Hundred Years Motel (Baeknyeon Motel) of Cheol-woo IM, a writer who has expressed Korean shamanic flowering as his fictitious characteristic since the 1980s, meet and interact with the world of magic realism in long novel One Hundred Years of Solitude of G. G. Marquez born in Colombia, Latin America, and the other is discussing the fictional techniques of H. L. Borges overlapping with short stories in novel collections The Age of Twenty and Fictions of Midnight by, respectively, young writers Yeon-soo KIM and PARK Hyeong-seo who displayed a unique world of fictions in the 2000s. For these purposes, we developed the points of discussion from the viewpoint of 'the meeting of two essences' for Seok-yeong HWANG and Marquez, of 'the meeting of two 'hundred years'' for Cheol-woo IM and Marquez, of 'novel writing as the finding of the original' for Yeon-soo KIM and Borges, and of 'novel writing surrounding fictions' for Hyeong-seo PARK and Borges. Around 2000, the trend of Latin American novels emerged as a phenomenon in Korean novels. It was probably a natural consequence of contemporary writers' struggling with genres and post-genres, the overturn of the center and the periphery, and blurred boundaries. Seok-yeong HWANG, Cheol-woo IM, Yeon-soo KIM, and PARK Hyeong-seo borrowed the contents and techniques of Latin American novels, but further research is required on how continuously their works internalized the characteristic properties of Marquez-style, Borges-style or polyphonic Latin American novels and, by doing so, how much they expanded or determined their own line. This is why this study has been performed productively out of vital importance. In every age throughout history, there have been the phenomena of encountering and sympathizing, and overlapping and spreading with foreign novels. This study is meaningful in that it illuminated the aspects of Korean contemporary novels in the flow of world literature through tracing the origin and reality of the trend of Latin American novels emerging conspicuously through overlapping particularly with Korean novels published in the 2000s.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.10 no.1
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• pp.46-56
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• 2017

Recently, the spread of IoT technology has been spreading, and it has been applied to all industrial fields such as home / home appliance / medical care. Due to the low specification, low power consumption characteristic and communication data characteristic of IoT, implementation of existing algorithm is difficult thing. From this reason, we have proposed for the first time that encryption and decryption can be proceeded by introducing a kind of variable length bit XOR operation method which changes a variable the bit length value by using carry up and carry down method. We confirmed the practicality of encrypting short message data frequently processed by IoT device / QR code / RFID / NFC without changing the size of data before and after encryption.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.21 no.6
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• pp.43-48
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• 2021

We propose 2-channel filter bank method instead of FFT method to decrease sub-channel interference for using of efficient frequency resource in MC-CDMA method. Since a prototype filter of filter bank having wavelet characteristic is designed having more less side-lobe, the nearest co-channel interference and inter symbol interference are decreased efficiently. Since the spreading signal of suggesting MC-CDMA system is being demanded for less chip rate and is not being considering for autocorrelation characteristic, the Walsh code can be used as a optimal orthogonal signal set. We consider bit error rate and signal to noise ratio to estimate the performance of suggested system on condition that white noise channel and arbitrary sinusoidal jammer are existing. As a result of comparing to traditional FFT-based MC-CDMA simulation result, our suggested system has shown better performance than traditional MC-CDMA method on the side of minimizing interference effect.

• Journal of Digital Convergence
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• v.6 no.3
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• pp.149-158
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• 2008

This study identifies the present status of multicultural broadcasting programs as multicultural phenomenon is spreading throughout Korean society and it discusses how a local broadcasting has to reflect locality and multicultural characteristic. A notion on the local of multimedia and multichannel time is expanding as a concept of emotional and psychological territory over geographical space. Therefore the locality should reflect attachment and interests of its members as well as disseminating multicultural reality. A locality for broadcasting should accept differences, reflect a cultural diversity, and satisfy its dynamics. The purpose of this study is to inquire whether a local broadcasting is performing its function as a local press and a place forpublic opinions by examining how they reflect reality of local, where an inflow of Immigrants and their cultures are altering the place as a multicultural society, and what Programs they propose. This study also presents media education for immigrants, revitalization of community, multicultural education about local citizens, and practical use of multicultural contents and small output radio as a source of supply for local broadcasting program in order to harmonize production of multlcultural media contents In local society.