• Title/Summary/Keyword: 토이론

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Prototype of Educational Game for Development of Creativity (창의력 계발을 위한 학습게임의 프로토타입 제시)

  • Ahn, Seong-Hye;Song, Su-Mi
    • The Journal of the Korea Contents Association
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    • v.8 no.7
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    • pp.112-119
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    • 2008
  • Today, changing to knowledge information society, creativity education is thought important in each educational institution according as the importance of creativity is emphasized more. But it focused on development of intelligence that put special stress on scholastic subject. Therefore, this paper wished to present direction of development of educational game that can develop creativity and synthetic ability to solve problem through learner's voluntary interest and participation. As a result, the researcher drew element of fun and component of storytelling of educational game that was based on design of leaning for development of creativity, a previous research, that was based on the concept of creativity and theory of multiple intelligence, and presented a development example with storyboard, interface design and element of graphic for the production of prototype of educational game, after design game structure.

"상한론(傷寒論)"에 나온 치자(梔子)의 용토(涌吐)효능에 대한 고찰(考察)

  • Lee, Gwang-Jae;Bang, Jeong-Gyun
    • Journal of Korean Medical classics
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    • v.18 no.3 s.30
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    • pp.106-115
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    • 2005
  • ${\ulcorner}$상한론(傷寒論)${\lrcorner}$시동한시기장기적저작(是東漢時期張機的著作), 시한의학제일부임상의학전저(是韓醫學第一部臨床醫學傳著), 저부서용리법방약어일로(這部書熔理法方藥於一爐), 개변증론치지선하(開辨證論治之先河), 시고대의학이론적존기지작(是古代醫學理論的尊基之作). ${\ulcorner}$상한론(傷寒論)${\lrcorner}$당중사용치자적처방유8종(當中使用梔子的處方有8種). 저사처방당중(這些處方當中), 치자시탕, 치자건강탕(梔子乾薑湯), 치자후박탕(梔子厚朴湯), 치자감초시탕, 치자생강시적하면도유일구' 득토자('得吐者) 지후복(止後服)'. 저개구자가해석위'(복용해탕후(服用該湯后))토자정지계속복용(吐者停止繼續服用)'. 거차가이인위사용치자적이상5개처방구유용토공능. 대우저개관점, 력대의가유사지긍정성태도(歷代醫家有些持肯定性態度), 유사인위시와전(有些認爲是訛傳), 지부정태도(持否定態度). 대차필자근거여하삼개방면, 즉(卽): 제일(第一), ${\ulcorner}$신농본초경(神農本草經)${\lrcorner}$화(和)${\ulcorner}$명의별록(名醫別錄)${\lrcorner}$당중미제도치자구유용토공능(當中未提到梔子具有涌吐功能). 제이(第二), 사용치자적기타삼개방제, 미제도(未提到)‘토(吐)’. 제삼(第三), 종제도저5개처방적조문내용래간, 시불능사용토법적(是不能使用吐法的). 인위(認爲)‘득토자(得吐者), 지후복(止後服)’ 시후인오첨적구자(是後人誤添的句子), 병차인위치자무용토공능(幷且認爲梔子無涌吐功能).

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Stress-Path Dependent Deformation Characteristics of Anisotropic Cohesive Soil (응력경로(應力經路)에 따른 이방성(異方性) 점성토(粘性土)의 변형특성(變形特性))

  • Kwon, Oh Yeob
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.9 no.3
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    • pp.133-141
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    • 1989
  • Lightly overconsolidated clays are commonly anisotropic, and exibit substantial ranges of approximately linear behavior at stress levels which do not produce yielding. The theory of cross-anisotropic elasticity is adopted to predict the stress-strain behavior of such an anisotropic soil. Equivalent elastic parameters $A^*$ and $B^*$ which express the relationships of stress and strain in the theory have been proposed. It is shown that constitutive relationships derived from the theory represents well the mechanical response of anisotropic soil.

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Seasonal Variation of Resilient Modulus of Granular Subgrade Soils (입상토질의 노상토 회복탄성계수의 계절적 변화)

  • Jin, Myung Sub;Lee, Kang Won;Kovacs, William
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.13 no.3
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    • pp.69-78
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    • 1993
  • A testing system has been developed to evaluate the seasonal variation of the resilient modulus of granular subgrade soils. Two sites were successfully instrumented with soil moisture-temperature cells to monitor over a period of one year, the field temperature and moisture content underneath the pavement. Multiple regression equations were developed to determine the resilient modulus under environmental conditions. It is noted that the use of the effective resilient modulus at the location of the Average Depth of Significant Stress (ADSS) provides a reasonable basis for determining subgrade properties. In addition, a theoretical model has been developed to predict the resilient modulus due to the change of temperature and moisture condition.

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Development of Resonant-Type Magnetometer Using High Permeability Isotropic Magnetic Material (고투자율 등방성 자기 물질을 이용한 공진형 마그네토미터 개발)

  • Yim, Jeong-Bin;Shim, Yeong-Ho;Ahn, Yeong-Sub
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.11 no.1 s.22
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    • pp.29-37
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    • 2005
  • The design and development if Resonant-type Magnetometer(RM) using isotropic magnetic with high permeability is described in this paper. At first, the relationship between the inductance L if the coil winding on a magnetic material and the permeability u(H) appearing in the magnetic material with isotropic and high permeability is defined as a background theory. Then the circuit if RM, which is to obtain the values if L as the change qf frequency is implemented using simple Schmitt Trigger Circuit Through the swinging tests, which is to evaluate the measurement ability if RM, the measurement possibility for the component of earth field was confined.

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Evaluation of Vertical Bearing Capacity of Bucket Foundations in Layered Soil by Using Finite Element Analysis (유한요소해석을 통한 다층지반에서의 버킷기초 수직지지력 산정)

  • Park, Jeong-Seon;Park, Duhee;Yoon, Se-Woong;Saeed-ullah, Jan Mandokhai
    • Journal of the Korean Geotechnical Society
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    • v.32 no.7
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    • pp.35-45
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    • 2016
  • Estimation of vertical bearing capacity is critical in the design of bucket foundation used to support offshore structure. Empirical formula and closed form solutions for bucket foundations in uniform sand or clay profiles have been extensively studied. However, the vertical bearing capacity of bucket foundations in alternating layers of sand overlying clay is not well defined. We performed a series of two-dimensional axisymmetric finite element analyses on bucket foundations in sand overlying clay soil, using elasto-plastic soil model. The load transfer mechanism is investigated for various conditions. Performing the parametric study for the friction angles, undrained shear strengths, thickness of sand layer, and aspect ratios of foundation, we present the predictive charts for determining the vertical bearing capacities of bucket foundations in sand overlying clay layer. In addition, after comparing with the finite element analysis results, it is found that linear interpolation between the design charts give acceptable values in these ranges of parameters.

Behavior of cement-based permeation grouting in cohesionless soil considering clogging phenomena (폐색효과를 고려한 사질토의 시멘트 침투 그라우팅 거동 특성)

  • Seo, Jong-Woo;Lee, In-Mo;Kim, Byung-Kyu;Kwon, Young-Sam
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.20 no.2
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    • pp.485-500
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    • 2018
  • The behavior of cement-based permeation grouting is divided into three different groups depending on the grain size distribution of the soils: (1) zone of cement-based permeation grouting not feasible; (2) zone of cement-based permeation grouting feasible; and (3) zone in which an accelerating agent should be added to limit the penetration depth. In the cement-based permeation grouting feasible zone, the concept of a representative pore radius was proposed. The ratios of the representative pore radius to the mean pore radius were obtained by performing laboratory test and comparing with clogging theory; these values were in the range of 1.07 and 1.35 depending on the grain size distribution of the soils. In addition, a functional relationship between the lumped parameter (${\theta}$), the representative pore radius and the w/c ratio were derived by comparing and matching experimental results with predictions from theory. In the zone in which the accelerating agent should be added, the controlling process of gel time to limit the penetration depth was experimentally verified. The test results matched well with those obtained from theory utilizing the developed grout penetration program on condition that the viscosity increasing tendency of grout suspension with time is properly taken into account.

Uplift Capacity of Shallow Foundation for Greenhouse (온실용 얕은기초의 인발저항력 검토)

  • Yun, Sung Wook;Choi, Man Kwon;Lee, Si Young;Kang, Dong Hyeon;Moon, Sung Dong;Yu, Chan;Yoon, Yong Cheol
    • Journal of Bio-Environment Control
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    • v.24 no.3
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    • pp.187-195
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    • 2015
  • In this study, a field test of uplift load was carried out using 15 greenhouse foundations fabricated in full scale on a sand soil to examine the uplift capacity of plastic film greenhouse and glasshouse foundations for disasterproof standard. As a result, the maximum uplift capacity of the target greenhouse foundations was shown to be in the range from 11.6kN to 82.4kN according to the differences between the forms and sizes of the foundation. As a result of the examination of the applicability using the field uplift load test result of the theoretical equation proposed for maximum uplift capacity calculation of greenhouse foundations, we found that in general, the conventional theoretical equation for the calculation provided numerical values close to the field test results. However, the soil considered in this study was a sand; thus, in the future, verifying the conventional theoretical equation for the uplift capacity calculation of a cohesive soil would be necessary.

A Study on the Anomaly in Retailing Market: Focused on the day of the week effect of Sales Volume in Fashion Apparel Products Retail Store (소매유통시장에서의 이상현상에 관한 연구: 의류소매점 매출의 요일효과를 중심으로)

  • Nam, Sang-Min
    • Journal of Global Scholars of Marketing Science
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    • v.16 no.1
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    • pp.117-141
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    • 2006
  • Daily sales volume in retailers seems to be changed because of five-days-work in a week resulting in growth of leisure time in Korea recently. The day of the week effect of sales volume that can not be theoretically explained, which sales pattern varies depending on days systematically and consistently, is so important. Especially the day of the week effect of sales volume exists in which retail branch and the extents of the day of the week effect from the perspective of marketing in retailing is very important. Thus, the purpose of this study was to investigate whether the day of the week effect of sales volume exists in men's clothing retailers and if so, there is difference in daily sales volume. There was insufficient researches in the field of anomaly such as the day of the week effect of sales volume in marketing. For this reason, this study has drawn upon research findings of finance, general demand theory, and previous studies of the day of the week effect in stock markets. In doing so, these works are referenced in theoretical background and applicability in retailing market of this study. This study empirically investigated the day of the week effect of sales volume through the revenues of a men's clothing retailers (P company) in past five years. As the result of this study, the day of the week effect of sales volume existed in men's clothing retailers and the day of the week effect showed positive from Monday to Sunday, which means Sunday, the biggest. Also, the day of the week effect by season was different. The result of this study is expected to provide some helpful evidence that offers effective operational strategies to retailers.

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Critical Review of Reconstruction Filters for Convolution Algorithms (Convolution 알고리즘을 이용한 영상 재구성필터에 관한 연구)

  • 라종범
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.17 no.1
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    • pp.14-22
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    • 1980
  • The Fourier convolution algorithm is used to reconstruct a 34 density function from projection data sets. The convolved data are then back-projected to obtain a density function. There are several choices of the weighting function for the design of the reconstruction(deblurring) filter. Present Paper reviews the published reconstruction liters theoretically and proposes a new reconstructirm filter design method, considering the problems such as the effects of sampling rate, aliasing, and noise. Several previous reconstructirn filters are compared with the proposed filter by computer simulations.

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