• Title/Summary/Keyword: 결정성 분석

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Evaluating the Wind-induced Response of Tall Building Changed by Arrangements of the Buildings (건물배치변화에 따른 고층건축물의 풍응답 평가)

  • Cho, Sang Kyu;Ha, Young Cheol;Kim, Jong Rak;Kim, Kyu Suk
    • Journal of Korean Society of Steel Construction
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    • v.16 no.3 s.70
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    • pp.305-314
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    • 2004
  • Many residential buildings and mixed-use (i.e., residential and commercial) buildings that are currently under construction in the country mainly consist of building clusters rather than single structures. Recent trends show single buildings that actually consist of two houses. The lower part of the building consists of a single dwelling space. However, the upper part of the building is split into two dwellings, considering the aspects of commercialism and appearance, such as ventilation and lighting. These tall and complex buildings not only have low mass and damping. They also depend on wind loads for their structural stability and serviceability, due to the interaction between the building groups and the wind. In architectural design, however, the interaction effects among neighboring houses within a building group have yet to be identified. In addition, it is difficult to predict these interaction effects. In this regard, this thesis aims to model patterns of architecture, which consist of two houses that are existing or under construction. Current structures are investigated by comparing their wind-reduced response interaction effects, based on the measured distance between two buildings, and the acceleration response through the wind tunnel test. The results of this study are expected to provide basic data for wind-induced response interaction effects of building groups. Furthermore, the outcomes are also intended to be used as data for more rational and economical structure design.

The Associtation between Methylenetetrahydrofolate Reductase Gene Polymorphisms and a Risk of Spontaneously Aborted Embryos (Methylenetetrahydrofolate Reductase(MTHFR) 유전자다형과 자연 유산아 발생의 관련성에 관한 연구)

  • Jeon, Nick-Beom;Ji, Seung Il;Shin, Seung Joo;Cha, Sun Hee;Choi, Dong Hee;Yim, Dong Jin;Park, Sang Hee;Lee, Suman;Lee, Sang Hwa;Ko, Jung Jae;Kim, Nam Keun
    • Clinical and Experimental Reproductive Medicine
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    • v.33 no.1
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    • pp.61-61
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    • 2006
  • Objectives : This study was performed to understand the influence of the methylenetetrahydrofolate reductase (MTHFR C677T and A1298C) genotypes on the spontaneously aborted embryos. Methods : DNA was extracted from tissue samples of 95 spontaneously aborted embryos and 100 samples of normal children randomly and 449 samples of normal adults were selected as the controls. MTHFR genotypes were determined by a polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay. Results : The aborted embryo group had higher frequency of MTHFR 677CC type (p=0.014) and lower 677CT type (p=0.063) than the controlled child group. The frequency of MTHFR 677CT type was drastically lower than that of controlled adult group (p=0.032). In the MTHFR C677T/A1298C combination, 677CC/1298AC genotype of the aborted embryo was significantly higher (p=0.034) than that of controlled child group, but it was not statistically significant in controlled adult group (p=0.063). Conclusion : MTHFR 677CC and MTHFR 677CC/1298AC genotypes may represent genetic markers for the risk of spontaneously aborted embryos at least in Koreans.

A Study on the Service Mix Strategy of Manufacturing Firms - Based on the Power Process - (제조기업에서 서비스믹스 전략에 관한 연구 - 파워프로세스 접근을 중심으로 -)

  • Ahn, Hee-Jun;Lee, Kyung-Hwan
    • Korean Business Review
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    • v.20 no.2
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    • pp.61-85
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    • 2007
  • Competitiveness of a firm essentially depends on the value of the product or service the firm supply. Product or service of high value derives customer purchase activity. Service mix is the process which creates competitiveness by value creation for customers through optimal combination of physical characteristics of product and service. This research is to contribute competitiveness increase of Korean manufacture industry by study of the effect of service mix as to the business competitiveness. Usually competitiveness advantage approach relies on the industry structure competition theory and the resource-based approach. However, it is said that, while the industry structure competition theory helps finding attractive industry, it rarely helps finding which companies succeed or fail in the specific industry. The resource-based viewpoint approach is limited in that this cannot provide any theory or systematic frame for the analysis even though it has contributed a lot to the competitiveness increase. Power process approach is applied to this study in order to overcome this limit and to Increase the business competitiveness. Power process is the process to create the value, the source of power by interaction of power elements, value, needs, environment and relation, the five power determination elements. Power process is a process that creates value to satisfy the power objective for the attainment of the goals of the power subject. This study is to contribute for the manufacture industry by establishing service mix strategy from the power process viewpoint.

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An Applicative Estimation of Safety Factors about Driven Pile Using the Results of Static Loading Test on the Ultimate State (극한상태의 정재하시험결과를 이용한 타입말뚝의 안전율 적용성 평가)

  • Ki, Wan-Seo;Park, Noh-Hwan;Kim, Sun-Hak
    • The Journal of Engineering Geology
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    • v.19 no.4
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    • pp.441-457
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    • 2009
  • This study estimated ultimate load by the determination methods based on ultimate load, yield load and settlement using experimental data from static load tests that applied load to driven piles used in sandy grounds at home and overseas until failure appeared markedly. Estimated ultimate load was normalized with actually measured failure load, and was compared among the determination methods according to the characteristics of pile. In addition, I have identified to the determination methods suitable for estimating ultimate load, and reevaluated the safety factor when determining allowable load. From the results of this study were drawn conclusions as follows. Among ultimate loads estimated by the ultimate-load-based determination methods, the value interpreted by Chin's method tended to overestimate actual measurements, and B. Hansen 80% standard and the stability plot method were considered most reliable as their results were closest to actual measurements. According to the results of this study, in calculating the allowable load, if the safety factor to be applied to failing load obtained by the method of determining extreme load is converted to the safety factor applied to the Standards for Structure Foundation Design, a value larger than 3.0 should be applied except the B. Hansen 90% method, and a value larger than 2.0 should be applied in the methods of determining yield load. In addition, if the safety factor to be applied to load obtained by the settlement standard is converted based on safety factor 3.0 for extreme load, a value smaller than 3.0 should be applied to the total settlement standard and the net settlement standard.

New Business Success using Strategic Innovation Strategy: Marine Engine Business and HEMAPT System of the Hyundai Heavy Industries Co. (신규사업성공과 전략적 기술혁신전략: 현대중공업의 엔진사업진출과 HEMAPT시스템 개발)

  • Kim, Wha Young
    • Journal of Service Research and Studies
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    • v.6 no.2
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    • pp.23-35
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    • 2016
  • Firms should seek greater profits and corporate growth through new businesses. New businesses contribute realizing creative economy that creates good jobs, and expanding the company by securing new markets and creating new profits and growth. However, new business is risky management decision-making to have a high failure rate because it involves the adaptation of new business environment and the burden of new investments, including the uncertainty of success in business. Therefore, innovation strategies play important roles for the new business entry, using product innovation, process innovation, business model innovation, disruptive innovation, and strategic innovation, etc. and company will get huge economic results by pushing them into successful business. It is essential that innovation strategy and IT development strategy along with business strategy of a firm are linked, and their strategic alignment is considered to be a critical success factor for new business success. Hyundai Heavy Industries(HHI) pursued marine engine business for the development of precision machinery industry and shipbuilding industry of Korea, and the company recognized the importance of new business strategy, innovation strategy, and IT strategy inter-linked, and pushed strategic alignment boldly. As a result, HHI won the competition in European and Japanese engine manufacturers and climbed into the world's largest engine manufacturer. This study suggests investigating and analyzing a case that HHI succeeded in marine engine business expansion using strategic innovation strategy as a way of the introduction of CNC machine tools and the development of HEMAPT system.

Characterization and Culture Optimization of an Glucosidase Inhibitor-producing Bacteria, Gluconobactor oxydans CK-2165 (α-Glucosidase 저해제 생산 균주, Gluconobacter oxydans CK-2165의 특성 및 배양 최적화)

  • Kim, Byoung-Kook;Suh, Min-Jung;Park, Ji-Su;Park, Jang-Woo;Suh, Jung-Woo;Kim, Jin-Yong;Lee, Sun-Young;Choi, Jongkeun;Suh, Joo-Won;Lee, In-Ae
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.11
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    • pp.5179-5186
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    • 2012
  • Miglitol, a well-known therapeutic intervention agents for diabetes, exhibits competitive inhibitory activity against ${\alpha}$-glucosidase and it is usually produced through three sequential steps including chemical and bioconversion processes. Gluconobactor oxydans (G. oxydans) belonging to acetic acid bacteria biologically, converts 1-deoxy-1-(2-hydroxyethylamino)-D-glucitol (P1) into a key intermidiate, 6-(2-hydroxyetyl) amino-6-deoxy-${\alpha}$-L-sorbofuranose (P2) by incomplete oxidation. In this study, we identified and optimized fermentation conditions of CK-2165, that was selected in soil samples by comparing the bioconversion yield. CK-2165 strain was found to be closely related to G. oxydans based on the result of phylogenetic analysis using 16S rDNA sequence. Utilization of API 20 kits revealed that this strain could use glucose, mannose, inositol, sorbitol, rhamnose, sucrose, melibiose, amygdalin and arabinose as carbon sources. The culture conditions were optimized for industrial production and several important factors affecting bioconversion rate were also tested using mycelial cake. Cell harvested at the late-stationary phase showed the highest bioconversion yield and $MgSO_4$ was critically required for the catalytic activity.

Effects of Excess Lead Addition on Sol-Gel Derived ($Pb_{0.9}La_{0.1}$)$Ti_{0.975}O_3$(PLT (10)) Thin Film

  • Kim, Seong-Jin;Jeong, Yang-Hui;Yun, Yeong-Seop
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.39 no.3
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    • pp.1-8
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    • 2002
  • In order to study electric properties of (Pb$\_$0.9/La$\_$0.1/)Ti$\_$0.975/O$_3$(PLT (10)) films with varying excess lead concentration (7.5, 10, 12.5, 15 ㏖% excess lead), the PLT films were deposited by sol-gel process. DTA analyses reveal that the crystallization temperature of the precursor powers decreased with increasing amount of excess lead. XRD patterns of PLT reveal pure perovskite structure and the preferred orientation increased with increasing Pb content in the films. With increasing amount of excess P$\_$b/, the relative permittivity ($\xi$$\_$r/) increased and leakage current density at 100 ㎸/cm transformed 4.01$\times$10$\^$-5/, 2.42$\times$10$\^$-6/, 1.27$\times$10$\^$-6/, 1.56$\times$10$\^$-6/A/㎠ respectively. In the results of hysteresis loops measured at 166 kV/cm, the remanent polarization (P$\_$r/) and the coercive field (E$\_$c) are 6.36$\mu$C/cm and 58.7 ㎸/cm, respectively (at 12.5 ㏖% excess P$\_$b/) With increasing amount of excess Pb, the remanent polarization for PLT thin film degraded to about 44%, 27%, 15%, 16% of the initial value after 10$\^$9/ cycles./TEX>) With increasing amount of excess Pb, the remanent polarization for PLT thin film degraded to about 44%, 27%, 15%, 16% of the initial value after $10^{9}$ cycles.

A Study on the Legal Systems and Case Studies of Cooperatives in Italian (이탈리아 협동조합의 법 제도와 사례연구)

  • Seong, Yeon Ok;Bae, Sung-Pil
    • Industry Promotion Research
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    • v.5 no.3
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    • pp.145-155
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    • 2020
  • Co-operatives are a deep-rooted organization that was first organized in Britain in the 19th century and spread to Europe and North America in the early 20th century and to the rest of the world from the mid-20th century. Cooperative in Italy are fraternal (friendly societies) separated from religion, and in the early days of socialism and the late 19th century Catholic Italy, but independent of activity. And the Church's social participation, as well as multiple personalities. Therefore, the purpose of this study is to study the laws and institutions of Italian cooperatives. And let's look at how the laws and systems of Italian co-operatives support society and the national economy. Specifically, firstly, based on prior research, the concept of co-operatives and the cooperative movement and social values are considered. Second, review the development process and characteristics of Italian co-operatives and the legal system. Third, I would like to analyze the case of Italian co-operatives. Fourth, suggest implications according to the results of the study. The results of the study suggested the following. First, the attitude such as attachment and sincerity of representatives and staff of village enterprises is very important. Second, all members of the organization should participate in decision making with empathy and attachment to the vision of the village enterprise. Third, it should be highly likely that village enterprises, which can draw capital from outside according to the needs of the organization, will generate higher economic results. Fourth, it is important to establish a model of mind enterprise by presenting factors and success factors in establishing a village enterprise based on cases and theories. In conclusion, Co-operatives should contribute to social contribution rather than economic profit-seeking.

Authorities and Duties of Arbitrators Under the Korean Arbitration Act and the American Arbitration Acts (한.미 중재법상의 중재인의 권한과 의무)

  • Park, Chul-Gyoo
    • Journal of Arbitration Studies
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    • v.16 no.1
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    • pp.315-341
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    • 2006
  • 이 논문은 1999년에 전면 개정된 한국의 중재법과 1925년에 제정된 미국의 연방중재볍 및 2000년에 제시된 개정통일중재법의 내용 중 중재인의 권한과 의무들에 관한 규정들을 비교 분석한 것이다. 우선, 미국 중재법의 기본법이라 할 수 있는 연방중재법은 1925년에 제정된 이래 중재 이슈에 관한 발전들을 담아내지 못한 채 진부한 과거의 법률을 그대로 유지하고 있다. 따라서, 중재인의 권한과 의무에 대해서도 중재판정과 같은 기본적인 권한 규정 외에 중재인의 임시적 처분이나 민사책임의 면제, 고지 의무등 새롭게 진전된 중재 환경의 변화나 논의들이 다루어지지 않고 있다. 그러나, 미국의 통일주법위원전미협의회가 주체가 되어 제시한 2000년의 개정통일중재법은 중재이론이나 케이스의 발전들을 반영하였을 뿐만 아니라, 중재인의 권한과 의무에 대해서도 훨씬 구체적인 규정들을 담아내고 있다. 개정통일중재법은 중재언의 권한을 개정 이전보다 훨씬 강화하는 대신, 보다 엄격한 윤리적 의무를 부과함으로써 균형을 유지하려 하고 있다. 특히, 중재인의 올바른 중재판정을 이끌어 내기 위해 증거 확보에 있어 보다 강한 절차적 권한을 부여하고 있는 것이 특정이다. 아울러, 중재인으로 하여금 임시적 처분을 내릴 수 있는 권한을 부여하고 있을 뿐만 아니라, 징벌적 배상을 결정할 수 있게까지 규정하고 있다. 그러나, 중재인의 절차적 권한의 강화는 동법이 의도한 바와는 달리 중재를 재판에 유사한 구조로 만듦과 동시에, 중재의 신속성과 최종성을 해치는 결과를 초래하는 것이 아닌가 하는 우려와 지적을 낳기도 한다. 한편, 한국의 중재법은 중재인의 임시적 처분권한과 고지의무를 규정하고 있지만, 미국의 개정통일중재법과 달리 민사적 책임면제 규정을 두고 있지는 않다. 특히, 한국 중재법에서 중재인은 증거를 수집하기 위하여 당사자의 임의적 협조에 의존하지만, 미국의 개정통일중재법에서는 증거개시제도까지 채택하고, 제 3 자도 소환할 수 있는 등 중재인의 절차적 권한이 훨씬 강하므로 한국 중재법에서 중재인의 절차적 권한은 미국의 개정통일중재법에서의 그것보다는 훨씬 제한적이다. 한국의 중재를 더욱 실효성 있게 하기 위해서는 중재법에서 중재인의 절차적 권한에 관한 규정을 보완해 주어야 할 것이다. 또 성공적인 중재를 위해서는 중재인의 전문성과 함께 윤리의식이 중요하므로 상사중 재원은 별도의 중재인 윤리규정을 제정해야 할 것이다.

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Estimation of Climatological Standard Deviation Distribution (기후학적 평년 표준편차 분포도의 상세화)

  • Kim, Jin-Hee;Kim, Soo-ock;Kim, Dae-jun
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.19 no.3
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    • pp.93-101
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    • 2017
  • The distribution of inter-annual variation in temperature would help evaluate the likelihood of a climatic risk and assess suitable zones of crops under climate change. In this study, we evaluated two methods to estimate the standard deviation of temperature in the areas where weather information is limited. We calculated the monthly standard deviation of temperature by collecting temperature at 0600 and 1500 local standard time from 10 automated weather stations (AWS). These weather stations were installed in the range of 8 to 1,073m above sea level within a mountainous catchment for 2011-2015. The observed values were compared with estimates, which were calculated using a geospatial correction scheme to derive the site-specific temperature. Those estimates explained 88 and 86% of the temperature variations at 0600 and 1500 LST, respectively. However, it often underestimated the temperatures. In the spring and fall, it tended to had different variance (e.g., increasing or decreasing pattern) from lower to higher elevation with the observed values. A regression analysis was also conducted to quantify the relationship between the standard deviation in temperature and the topography. The regression equation explained a relatively large variation of the monthly standard deviation when lapse-rate corrected temperature, basic topographical variables (e.g., slope, and aspect) and topographical variables related to temperature (e.g., thermal belt, cold air drainage, and brightness index) were used. The coefficient of determination for the regression analysis ranged between 0.46 and 0.98. It was expected that the regression model could account for 70% of the spatial variation of the standard deviation when the monthly standard deviation was predicted by using the minimum-maximum effective range of topographical variables for the area.