64 research outputs found

    Microalgae biorefinery symbiosis: screening, production, and process analytical technology

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    ๋ชจ๋ธ ๊ณต์ • ๋ถˆ์ผ์น˜ ์ƒํ™ฉ์—์„œ ํ™”ํ•™ ์ƒ๋ฌผ ๊ณต์ •์˜ ๋ฐ์ดํ„ฐ ๊ธฐ๋ฐ˜ ์ตœ์ ํ™”๋ฅผ ์œ„ํ•œ ๊ฐœ์„ ํ•ญ ์ ์‘๋ฒ•

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    ํ•™์œ„๋…ผ๋ฌธ (๋ฐ•์‚ฌ)-- ์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› : ๊ณต๊ณผ๋Œ€ํ•™ ํ™”ํ•™์ƒ๋ฌผ๊ณตํ•™๋ถ€, 2018. 2. ์ด์ข…๋ฏผ.๊ฐœ์„ ํ•ญ ์ ์‘๋ฒ•์€ ๋ฐ์ดํ„ฐ ๊ธฐ๋ฐ˜ ์ตœ์ ํ™” ๊ธฐ๋ฒ•์˜ ์ผ์ข…์œผ๋กœ ๋ชจ๋ธ ๊ณต์ • ๋ถˆ์ผ์น˜ ์กฐ๊ฑด์—์„œ๋„ ์ˆ˜๋ ดํ•˜๋Š” ๊ฐ’์ด ๊ณต์ •์˜ ์ตœ์  ํ•„์š” ์กฐ๊ฑด์„ ๋งŒ์กฑํ•œ๋‹ค๋Š” ํŠน์ง•์ด ์žˆ๋‹ค. ์ด ํ•™์œ„ ๋…ผ๋ฌธ์€ ๊ฐœ์„ ํ•ญ ์ ์‘๋ฒ•์˜ ํ™”ํ•™ ๋ฐ ์ƒ๋ฌผ ๊ณต์ •์— ๋Œ€ํ•œ ์ ์šฉ ๊ณผ์ •์—์„œ ๋ฐœ์ƒํ•˜๋Š” 3 ๊ฐ€์ง€ ๋ฌธ์ œ์ ์— ๋Œ€ํ•œ ํ•ด๊ฒฐ์ฑ…์„ ์ œ์‹œํ•œ๋‹ค. ์ฒซ ๋ฒˆ์งธ, ๋ฐ˜๋ณต์ ์œผ๋กœ ๋ฐœ์ƒํ•˜๋Š” ํฐ ์™ธ๋ž€์— ์˜ํ•œ ์ตœ์ ์„ฑ ์ƒ์‹ค์˜ ๋ฌธ์ œ๋Š” ๊ณผ๊ฑฐ ์™ธ๋ž€ ์ •๋ณด๋ฅผ ์ด์šฉํ•˜์—ฌ ์•ž ๋จน์ž„ ๊ฒฐ์ •๊ธฐ๋ฅผ ๋””์ž์ธ ํ•จ์œผ๋กœ์จ ๋น ๋ฅด๊ฒŒ ์™ธ๋ž€์— ๋Œ€์ฒ˜ํ•  ์ˆ˜ ์žˆ๋‹ค. ์ด๋Ÿฌํ•œ ์•ž ๋จน์ž„ ๊ฒฐ์ •๊ธฐ๋Š” ์ตœ์‹  ๊ธฐ๋ฒ•์ธ ์‹ฌ์ธต ์‹ ๊ฒฝ๋ง ๊ธฐ๋ฒ•์„ ์‚ฌ์šฉํ•˜์—ฌ ๊ตฌ์„ฑํ•˜์˜€๋‹ค. ๋‘ ๋ฒˆ์งธ, fed-batch reactor ๊ณต์ •์˜ ๋™์  ์ตœ์ ํ™” ๋ฌธ์ œ์™€ ๊ฐ™์ด ์กฐ์ž‘ ๋ณ€์ˆ˜์˜ ์ˆ˜๊ฐ€ ๋งŽ์€ ์ƒํ™ฉ์—์„œ ๋ชฉ์  ํ•จ์ˆ˜์™€ ์ œ์•ฝ ์กฐ๊ฑด์˜ ์‹คํ—˜์  ๊ตฌ๋ฐฐ๋ฅผ ํšจ๊ณผ์ ์œผ๋กœ ์ถ”์ •ํ•˜๊ธฐ ์œ„ํ•˜์—ฌ ํšŒ๊ท€ ๋ถ„์„ ๋ฐฉ๋ฒ•์„ ์ ์šฉํ•˜๋Š” ๋ฐฉ๋ฒ•์„ ์ œ์•ˆํ•˜์˜€๋‹ค. ์ด๋ฅผ ์œ„ํ•˜์—ฌ multiple linear regression (MLR), principle component analysis (PCA), partial least squares (PLS)์™€ ๊ฐ™์€ ๋‹ค์–‘ํ•œ ํšŒ๊ท€ ๋ถ„์„ ๋ฐฉ๋ฒ•์ด ์ ์šฉ๋˜์—ˆ๊ณ , ๋ณด์ˆ˜์ ์ธ ์ถ”์ •์„ ์œ„ํ•œ moving average ์—…๋ฐ์ดํŠธ ๋ฐฉ๋ฒ•๋„ ์ œ์•ˆ๋˜์–ด ์ˆ˜๋ ดํ–ˆ์„ ๋•Œ์˜ ๊ณต์ •์˜ ์ตœ์  ํ•„์š” ์กฐ๊ฑด ๋งŒ์กฑ์ด๋ผ๋Š” ํŠน์„ฑ์„ ์œ ์ง€ํ•จ์„ ์ฆ๋ช…ํ•˜์˜€๋‹ค. ๋งˆ์ง€๋ง‰์œผ๋กœ, ์—…๋ฐ์ดํŠธ์—์„œ ๋ฐœ์ƒํ•  ์ˆ˜ ์žˆ๋Š” infeasible solution๊ณผ ๊ณต์ • ๋…ธ์ด์ฆˆ๋ฅผ ํšจ๊ณผ์ ์œผ๋กœ ์ฒ˜๋ฆฌํ•  ์ˆ˜ ์žˆ๋Š” ์ƒˆ๋กœ์šด ํ˜•ํƒœ์˜ ๊ฐœ์„ ํ•ญ ์ ์‘๋ฒ•์„ ์ œ์•ˆํ•˜์˜€๋‹ค. ๋˜ํ•œ ์ œ์•ˆ๋œ ์ƒˆ๋กœ์šด ๊ตฌ์กฐ์˜ ๊ฐœ์„ ํ•ญ ์ ์‘๋ฒ•์ด ๊ฐ–๋Š” ๋…ธ์ด์ฆˆ์— ๋Œ€ํ•œ ๊ฐ•๊ฑด์„ฑ๊ณผ ์ˆ˜๋ ด์„ฑ, ๊ทธ๋ฆฌ๊ณ  ์ˆ˜๋ ดํ–ˆ์„ ๋•Œ์˜ ์ตœ์  ํ•„์š”์กฐ๊ฑด์ด ๋งŒ์กฑํ•จ์„ ์ฆ๋ช…ํ•˜์˜€๋‹ค.1. Introduction 26 1.1 Background and motivation 26 1.2 Literature review 28 1.2.1 Real time optimization 28 1.2.2 Optimality loss by model-plant mismatch 32 1.2.3 Methods to overcome the model-plant mismatch 33 1.3 Major contributions of this thesis 42 1.4 Outline of this thesis 44 2. Data-driven optimization via modifier adaptation 45 2.1 Introduction 45 2.2 Satisfaction of necessary conditions of optimality 47 3. Three issues of modifier adaptation 50 3.1 Issue 1: Frequent and large disturbance 50 3.1.1 Design of feedforward decision maker using machine learning and historical disturbance data 50 3.1.2 Illustrative example 70 3.1.3 Run-to-run optimization of bioprocess 82 3.1.4 Concluding remarks 88 3.2 Issue 2: Experimental gradient estimation under noisy and multivariate condition 89 3.2.1 Importance of gradient estimation for the modifier adaptation 89 3.2.2 Motivational example: Run-to-run optimization of bioreactor 91 3.2.3 Conventional experimental gradient estimation 96 3.2.4 Regression based gradient estimation and its application to modifier adaptation 99 3.2.5 Concluding remarks 129 3.3 Issue 3: A novel structure of modifier adaptation for robustness 130 3.3.1 Feasibility and structural robustness 130 3.3.2 Proposition of new structural modifier adaptation 135 3.3.3 Illustrative example 149 3.3.4 Concluding remarks 155 4. Conclusions and future works 156 4.1 Conclusions 156 4.2 Future works 157Docto

    Selected Papers from 27th European Biomass Conference & Exhibition (EUBCE 2019)

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    This book draws together a small selection of full-length papers based on presentations given at the 27th European Biomass Conference and Exhibition held in Lisbon, Portugal in 2019. The topics covered, which reflect the breadth of the program of the EUBCE conference itself, include biomass sources, various aspects of technologies used for the conversion of biomass to bioproducts and bioenergy, as well as different approaches to assessing environmental impacts, which include case studies based on different technologies in use in a range of countries

    Advances in Condition Monitoring, Optimization and Control for Complex Industrial Processes

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    The book documents 25 papers collected from the Special Issue โ€œAdvances in Condition Monitoring, Optimization and Control for Complex Industrial Processesโ€, highlighting recent research trends in complex industrial processes. The book aims to stimulate the research field and be of benefit to readers from both academic institutes and industrial sectors

    Abstracts of manuscripts submitted in 1991 for publication

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    This volume contains the abstracts of manuscripts submitted for publication during calendar year 1991 by the staff and students of the Woods Hole Oceanographic Institution. We identify the journal of those manuscripts which are in press or have been published. The volume is intended to be informative, but not a bibliography. The abstracts are listed by title in the Table of Contents and are grouped into one of our five departents, Marine Policy Center, Coastal Research Center, or the student category. An author index is presented in the back to facilitate locating specific papers

    Singular Perturbation Based Solution to Optimal Microalgal Growth Problem and Its Infinite Time Horizon Analysis

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    Czech Science Foundation [102/08/0186]; MSMT [MSM 600 766 58 0]; Academy of Sciences of the Czech Republic; National Council of Science and Technology of Mexico (CONACyT
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