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A Study on the Characteristics of Rock Mass by GSI in Limestone Mine (석회석 광산에서의 GSI 분류법에 의한 암반특성연구)

  • ;Kaynnam U. M. Rao
    • Tunnel and Underground Space
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    • v.14 no.2
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    • pp.86-96
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    • 2004
  • Rock mass classification methods such as RMR, Q system and GSl have been widely adopted with certain modifications for the design of mine openings. The GSI system is the only rock mass classification system that is related to Mohr-Coulomb and Hoek-Brown strength parameters and gives a simple method to calculate the engineering properties of rock masses which can be useful input parameters for a numerical analysis. A detailed surveying for GSI mapping as well as far calculating RMR values was undertaken at Daesung and Pyunghae underground limestone mining sites. RQD values were determined for row locations in these two mining sites. Based on GSI values and intact rock strength properties, the rock mass strength modulus of elasticity as well as the Mohr-Coulomb strength parameter c$_{m}$ and $\phi$$_{m}$ were determined. GSI and RMR are correlated.

Effect of Azospirillum brasilense and Methylobacterium oryzae Inoculation on Growth of Red Pepper (Capsicum annuum L.)

  • Chung, Jong-Bae;Sa, Tong-Min
    • Korean Journal of Soil Science and Fertilizer
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    • v.45 no.1
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    • pp.59-65
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    • 2012
  • Plant growth-promoting effects of rhizobacterial inoculation obtained in pot experiments cannot always be dependably reproduced in fields. In this study, we investigated the effect of inoculation with Azospirillum brasilense and Methylobacterium oryzae, which have displayed growth promoting effects in several pot experiments, on growth and fruit yield of red pepper under field condition in a plastic-film house. Four rows spaced 90 cm apart were prepared after application of compost ($10Mg\;ha^{-1}$), and red pepper seedlings (Capsicum annum L., Nocgwang) were transplanted in each row with 40-cm space. Experimental treatments were consisted of A. brasilense CW903 inoculation, M. oryzae CBMB20 inoculation, and uninoculated control. Twelve plots, 10 plants per plot, were allotted to the three treatments with four replicates in a completely randomized design. At the time of transplanting, 50 mL of each inoculum ($1{\times}10^8cells\;mL^{-1}$) was introduced into root zone soil of each plant, and re-inoculated at 7 and 14 days after transplant. Plant growth and fruit yield were measured during the experiment. Both A. brasilense CW903 and M. oryzae CBMB20 could not promote growth of red pepper plants. All growth parameters measured were not significantly different among treatments. There were large variations in fruit yield recorded on plot basis, and no statistically significant differences were found among treatments. The failure to demonstrate the expected plant growth promoting effect of the inoculants is possibly due to various environmental factors, including weather and soil characteristics, reducing the possibility to express the potential of the inoculated bacterial strains.

A Study on the Tendency of Realism in Modern Fashion -Focusing on Realism Formativeness expressed in the World of Honore Daumier리s Art- (현대패션에 표현된 리얼리즘 경향에 관한 연구 - 도미에(Honore Daumier리s)의 회화에 나타난 조형성을 중심으로 -)

  • Row Young;Im Nam-Young
    • Journal of the Korea Fashion and Costume Design Association
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    • v.6 no.3
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    • pp.185-199
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    • 2004
  • This study is intended to examine Honore Daurnier's realism formativeness, review it in connection with socio-cultural conditions, analyze costume designs by a style of realism formativeness, in order to find the value. For the study, the procedure included the review of Daurnier's works and world, together with realism formativeness. Then, Daurnier's realism formativeness applied to costume designs were categorized and found the features of each style. Finally, it sought the implication of realism formativeness in costume designs. Honore Daumier, a realist of France in the 19th century, has been reputed that he pursues plain reality with a satire, uses all the conditions of humans as his object, and observes the vanity, desire, and foolishness of humans to represent his own expression techniques as cold as a stone. Realism formativeness is characterized by adherence to observing reality and engagement in reality, an effort to represent the world as it is as what we sense it without diluting or omitting it, nor any deception. The following terms can be used to describe the three styles of intentional recreation, satire on reality, and real existence; For intentional recreation in costume may be featured by the avant-garde, the pursuit of autonomy, reconstruction, rediscovery, recombination, reinterpretation, neutralized representation (reality + the abstract), transformation, distortion, shock, and unexpectedness, etc. For satire on reality in costume, satirical criticism and mockery in a coexistence of time and space, dualism due to the combination of the exterior and the interior, reality reflecting the actual reality, and irony are those words. Real existence in costume may be described with objectivity, ordinariness, correctness of representing a theme, impersonality excluding subjectivity, clearness, certainness, and preciseness, etc.

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Evaluating Spatiality of Green-House Gas Emission in Building Site ("대" 지목에 의거한 온실가스 분포의 공간성 평가)

  • Kim, Jun-Hyun;Um, Jung-Sup
    • Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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    • 2010.06a
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    • pp.94-102
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    • 2010
  • These days the land category is the most specific basis of legal for land use or land use form that is determined by the main use of land. Even if same land building site, it is used very various like a detached house, a row house, a multiplex house, a villa, an apartment, a mixed-use Apartments, commercial building, fallow land etc. There is a need of variety analysis in order to apply greenhouse gas emission or statistics assessment for standard of classification. Therefore, This study measured carbon dioxide by for different government agencies of maps by land use time, season, elevation, space, area of floating population. As a result, The emission characteristic was high l.78 times, on average of l.35 times in winter compared with summer, when the temperatures increased 11C, the carbon dioxide is 22ppm high in the afternoon, A commercial building is high 4.04 times compare with detached house.

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Housing Conditions of the Elderly Living Alone in Gunsan City (군산시 독거노인의 거주환경실태)

  • Rhee, Ji-Sook;Kang, Young-Sook;Ryou, Ok-Soon
    • Proceeding of Spring/Autumn Annual Conference of KHA
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    • 2008.04a
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    • pp.323-327
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    • 2008
  • The population of the elderly and elderly living alone goes on increasing. Most elderly does not want to move into another place out of their present living environment. So it is essential to know their living conditions for the quality of living, especially the aged living alone out of their children' care. Unfortunately there is scarcely any house designed for the aged, especially elderly living alone until now. So this study investigated the living environment of the elderly living alone in gunsan city. The ratio of the female aged living alone is about 3 times than the male but the male population is increasing. Most of them are troubled with more than a disease and use aids and feel the necessity of the others' help. The ratio of the absolute poverty among the elderly living alone is about 30%. The majority of them are almost 65-84 years old with living detached house. Most of them own their house. They living in detached house are of a mind to remodel bath/toilet first of all and they living in apartment or row houses have a intention of remodeling an air conditioner and paper walls and ceiling and flooring of all things in house. As the bath and restroom have been pointed as a dangerous space for elderly, the elderly living alone pointed out them as to be remodeled. It seemed the air conditioner in house do not work well in view of their poor economic condition. For the elderly It is needed economic and institutional supports of private organization or government.

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The behavior of a Cut Slope Stabilized by Use of Piles during Heavy Rain (억지말뚝으로 보강된 절개사면의 강우시 거동)

  • Han, Jung-Geun;Hong, Won-Pyo;Sin, Min-Ho
    • Geotechnical Engineering
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    • v.12 no.1
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    • pp.35-46
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    • 1996
  • An instrumentation system is designed to observe the behavior of slope soil and stabilizing piles during heavy rains. Inclinometers, standpipe piezometers and strain gages are installed into a cut slope reinforced by a row .of piles for an apartment. The horizontal deflection and bending stress developed on the piles can be measured, respectively, by the inclinometers and strain gages installed in piles, while the horizontal deformation of the slope soil can be measured by the inclinometer installed in the soil across the open space between piles. The groundwater level doss not grow so sensitively during heavy rain. The behavior of piles and slope is 서footed by the wetting front, since the driving force of slope increases with the weight of slope soil above the wetting front. The stabilizing piles and the slope soil show elastic behavior during heavy rain.

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Two dimensional variable-length vector storage format for efficient storage of sparse matrix in the finite element method (유한요소법에서 희소행렬의 효율적인 저장을 위한 2차원 가변길이 벡터 저장구조)

  • Boo, Hee-Hyung;Kim, Sung-Ho
    • Journal of the Korea Society of Computer and Information
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    • v.17 no.9
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    • pp.9-16
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    • 2012
  • In this paper, we propose the two dimensional variable-length vector storage format which can be used for efficient storage of sparse matrix in the FEM (finite element method). The proposed storage format is the method storing only actual needed non-zero values of each row on upper triangular matrix with the total rows N, by using two dimensional variable-length vector instead of $N{\times}N$ large sparse matrix of entire equation of finite elements. This method only needs storage spaces of the number of minimum 1 to maximum 5 in 2D grid structure and the number of minimum 1 to maximum 14 in 3D grid structure of analysis target. The number doesn't excess two times although involving index number. From the experimental result, we can find out that the proposed storage format can reduce the memory space more effectively, as the total number of nodes increases, than the existing skyline storage format storing maximum column height.

A Study on Historical Characteristics and Modern Trend of Torajan Traditional Housing in Indonesia (인도네시아 또라자 전통주거의 역사적 특성과 현대적 양상에 관한 연구)

  • Park, Soon-Kwan
    • Journal of the Korean housing association
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    • v.22 no.3
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    • pp.59-71
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    • 2011
  • The purpose of this study is to investigate the basic historical characteristics and its modern trend of Torajan traditional housing architecture in Sulawesi Province, Indonesia. The Toraja culture belongs to the cosmological culture with Cosmos centric characteristics. A traditional house, being called 'tongkonan' in Toraja region, is more than just a structure, representing the symbol of family identity and tradition. The Torajan architecture is a combination of the myth and cosmos, also regional conditions. With a short description of the general conditions and spiritual values of the Toraja, this paper explains the space-composition, the stylistic characteristics, the ornamental elements, construction, and its modern trend, etc. In general, it is raised on stilts several metres high, with a dramatically boat-shaped roof. Village layout varies according to size. The houses are arranged in a row, side by side, with their front gables facing north. Each house stands opposite its own rice-barn. The houses with their oblong ground-plans, built on piles set on stones. The interior is divided into three or four rooms, having few window. The houses are embellished with carving and paintings, and the facades display engraved and painted geometric and figural designs. The most frequent motif is the buffalo head, ranging from the realistic to the highly stylized. The Torajan traditional housing have experienced radical changes during the Modern period. In spite of the popularity of new modern house-styles, the traditional architectural style is often now constructed as an icon of Toraja identity. This paper will be helpful for understanding regional diversity of the traditional housing in Southeast Asia.

Reliability analysis of slopes stabilised with piles using response surface method

  • Saseendran, Ramanandan;Dodagoudar, G.R.
    • Geomechanics and Engineering
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    • v.21 no.6
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    • pp.513-525
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    • 2020
  • Slopes stabilised with piles are seldom analysed considering uncertainties in the parameters of the pile-slope system. Reliability analysis of the pile-slope system quantifies the degree of uncertainties and evaluates the safety of the system. In the present study, the reliability analysis of a slope stabilised with piles is performed using the first-order reliability method (FORM) based on Hasofer-Lind approach. The implicit performance function associated with the factor of safety (FS) of the slope is approximated using the response surface method. The analyses are carried out considering the design matrices formulated based on both the 2k factorial design augmented with a centre run (2k fact-centred design) and face-centered cube design (FCD). The finite element method is used as the deterministic model to compute the FS of the pile-slope system. Results are compared with the results of the Monte Carlo simulation. It is observed that the optimum location of the row of piles is at the middle of the slope to achieve the maximum FS. The results show that the reliability of the system is not uniform for different pile configurations, even if the system deterministically satisfies the target factor of safety (FSt) criterion. The FSt should be selected judiciously as it is observed that the reliability of the system changes drastically with the FSt level. The results of the 2k fact-centred design and FCD are in good agreement with each other. The procedure of the FCD is computationally costly and hence the use of 2k fact-centred design is recommended, provided the response of the system is sufficiently linear over the factorial space.

Path Combining System of XML Documents based on Relational DBMS (관계형 DBMS 기반의 XML 문서 경로 통합 시스템)

  • Lee, Bum-Suk;Hwang, Byung-Yeon
    • Journal of Korea Multimedia Society
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    • v.11 no.4
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    • pp.415-422
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    • 2008
  • With the increasing use of XML, considerable research is being conducted on the XML document management systems for more efficient storage and searching of XML documents. Depending on the base systems, these researches can be classified into object-oriented DBMS (OODBMS) and relational DBMS (RDBMS). OODBMS-based systems are better suited to reflect the structure of XML-documents than RDBMS based ones. However, using an XML parser to map the contents of documents to relational tables is a better way to construct a stable and effective XML document management system. The proposed X-Binder system uses an RDBMS-based inverted index; this guarantees high searching speed but wastes considerable storage space. To avoid this, the proposed system incorporates a path combining module agent that combines paths with sibling relations, and stores them in a single row. Performance evaluation revealed that the proposed system reduces storage wastage and search time.

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