• Title/Summary/Keyword: central region

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A Study on Sequential Design of Experiments Using Non-Central Composite Designs (비중심합성계획을 이용한 순차적 실험방법에 관한 연구)

  • Shin, Byung-Cheol;Byun, Jai-Hyun;Yun, Tae Hong
    • Journal of Korean Society for Quality Management
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    • v.49 no.1
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    • pp.31-45
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    • 2021
  • Purpose: A noncentral composite design method is to be developed to explore farther region for the first factorial design. A general guideline for sequential experimentation is provided. Methods: (1) A non-overlapping noncentral composite design (NNCD) is developed, in which the second factorial design shares one design point that indicates the best response value in the first factorial design. (2) Four composite designs are compared in terms of the four design evaluation criteria, which are D-, A, G, and I-optimality. (3) A follow-up design strategy is suggested based on the interaction effect, direction of improvement, number of factors. Results: (1) NNCD and model building method are presented, which is useful for exploring farther region from first factorial design block. (2) The performances of the four composite designs are compared. (3) A follow-up design strategy is suggested. Conclusion: (1) NNCD will be useful to explore farther region for the first factorial design. (2) A follow-up design strategy can be beneficial to the experimental practitioners for product and process design and improvement.

Linking nuclear energy, human development and carbon emission in BRICS region: Do external debt and financial globalization protect the environment?

  • Sadiq, Muhammad;Shinwari, Riazullah;Usman, Muhammad;Ozturk, Ilhan;Maghyereh, Aktham Issa
    • Nuclear Engineering and Technology
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    • v.54 no.9
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    • pp.3299-3309
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    • 2022
  • Nuclear energy has the potential to play an influential role in energy transition efforts than is now anticipated by many countries. Realizing sustainable human development and reducing global climate crises will become more difficult without significantly increasing nuclear power. This paper aims to probe the role of nuclear energy, external debt, and financial globalization in sustaining human development and environmental conditions simultaneously in BRICS (Brazil, Russia, India, China, and South Africa) countries. This study applied a battery of second-generation estimation approaches over the period from 1990 to 2019. These methods are useful and robust to cross-countries dependencies, slope heterogeneity, parameters endogeneity, and serial correlation that are ignored in conventional approaches to generate more comprehensive and reliable estimates. The empirical findings indicate that nuclear energy and financial globalization contribute to human development, whereas external debt inhibits it. Similarly, financial globalization accelerates ecological deterioration, but nuclear energy and external debt promote environmental sustainability. Moreover, the study reveals bidirectional feedback causalities between human development, carbon emissions and nuclear energy consumption. The study offers useful policy guidance on accomplishing sustainable and inclusive development in BRICS countries.

Ductile Fracture in the Central Region of Circular Plate in Rotary Forging

  • Park, Seogou;Oh, Hung-Kuk
    • Transactions of Materials Processing
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    • v.5 no.4
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    • pp.337-342
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    • 1996
  • The present investigation is concerned with application of theory on fracture to the prediction of workability of materials in rotary forging with special reference to center crack. The validity of the theory on ductile fracture was examined by the experimental data. Then the workability of materials in rotary forging was determined.

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What would become of an image of the future in Sejong city? (뉴스초점 - 세종시의 미래상은 어떻게 될 것인가?)

  • Chung, Moo-Yong
    • Journal of the Korean Professional Engineers Association
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    • v.43 no.3
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    • pp.34-39
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    • 2010
  • Which way should Sejong city focus, the original plan, "The Multipurpose Central City for Administration", or the modified one, "The Central City for Education and Science"? Which way will satisfy both the country and Choongchung region in the future of Sejong city? Let's discuss if the modified plan can be the solution for the inefficiencies and lack of self-sufficiency of the original plan.

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Ganglioglioma in Brainstem : Case Report and a Review of Literatures

  • Kim, Sung-Duk;Kim, Jong Hyun;Lee, Cheol-Young;Kim, Hyun-Woo
    • Journal of Korean Neurosurgical Society
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    • v.55 no.3
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    • pp.164-166
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    • 2014
  • Ganglioglioma is an infrequent tumor of the central nervous system (CNS); mostly supratentorial region. But, they can occur anywhere in the central nervous system such as brainstem, cerebellopontine angle (CPA), thalamus, optic nerve and spinal cord. Although it occurs rarely, ganglioglioma should be included in the differential diagnosis of a posterior fossa mass because early recognition is important for treatment and patient counseling.

Boundary Layer Ozone Transport from Eastern China to Southern Japan: Pollution Episodes Observed during Monsoon Onset in 2004

  • Pochanart, Pakpong;Wang, Zifa;Akimoto, Hajime
    • Asian Journal of Atmospheric Environment
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    • v.9 no.1
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    • pp.48-56
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    • 2015
  • The trajectory analysis of boundary layer ozone data at four regional sites in the East Asian outflow regions in Japan was carried out together with boundary layer ozone data observed at Mt. Tai and Mt. Huang in the source region of central eastern China during the monsoon onset in May-June 2003 and 2004. At all sites, the influences of anthropogenic emissions from East Asia have been found. During May and June 2004, the evidences of direct pollution transport from central eastern China to Hedo, an outflow site in Okinawa Island were observed. Ozone mixing ratios associated with air masses from central eastern China averaged 45 ppb while those associated with clean air masses from the Pacific were only 14 ppb, which resulted in averaged 31 ppb increase of ozone mixing ratios during the pollution episodes from central eastern China at Cape Hedo. Using transport time analysis and averaging all ozone episodes transported from central eastern China, the ozone dilution rate of 5.4 ppb per day was roughly estimated during air masses transported from source to outflow regions at Hedo. In the regions nearby Japanese mainland, however ozone increases by long-range transports were more related to both domestic and East Asian sources as a whole.

Evaluation and Identification of Promising Bivoltine Breeds in the Silkworm Bombyx mori L.

  • Begum, Azeezur Rehman Naseema;Basavaraja, Hadikere Kallappa;Joge, Punjab Govindrai;Palit, Aditya Kumar
    • International Journal of Industrial Entomology and Biomaterials
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    • v.16 no.1
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    • pp.15-20
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    • 2008
  • Under the all India programme of evaluation of mulberry and silkworm genotypes, twelve bivoltine silkworm breeds obtained from Central Silkworm Germplasm Resource Centre, Hosur (CSGRC) were evaluated at the bivoltine silkworm breeding laboratory, Central Sericultural Research & Training Institute, Mysore (CSR&TI). These breeds were tested during September-October 2003, August-September 2004 and February-March 2005. The average temperature and humidity during September-October 2003 was $26.5^{\circ}C$ and 72.6% RH, while during August-September 2004, it was $26.5^{\circ}C$ and 75.2% RH and during February-March 2005 it was $24^{\circ}C$ and 48% RH respectively. The performance of the breeds in respect of 21 traits was studied and statistically analyzed using analysis of variance (Singh and Choudhary, 1985). Silkworm breeds were short-listed using multiple trait evaluation index method as suggested by Mano et at., (1993). Evaluation Index values were calculated for all the 11 traits of economic importance and six breeds were short-listed based on average index value 50 and above 50. Two breed viz., BV 183 (SMGS-1) have recorded average E.I. >50 in 10 traits (except in neatness) and ranked first and the breed BV 262 (SMGS9) with E.I. value >50 in nine traits except in cocoon weight and neatness ranked second, in the order of merit. These two breeds may be selected as resource material for evolving region specific silkworm breeds.