subject:( process optimization)

University of Waterloo

1. Ali Yusuf, Yusuf. Green Petroleum Refining - Mathematical Models for Optimizing Petroleum Refining Under Emission Constraints.

Degree: 2013, University of Waterloo

URL: http://hdl.handle.net/10012/7860

► Petroleum refining processes provide the daily requirements of energy for the global market. Each refining process produces wastes that have the capacity to harm the… (more)

Subjects/Keywords: Optimization Petroleum Refining; Process Optimization

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APA (6^th Edition):

Ali Yusuf, Y. (2013). Green Petroleum Refining - Mathematical Models for Optimizing Petroleum Refining Under Emission Constraints. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/7860

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ali Yusuf, Yusuf. “Green Petroleum Refining - Mathematical Models for Optimizing Petroleum Refining Under Emission Constraints.” 2013. Thesis, University of Waterloo. Accessed December 14, 2019. http://hdl.handle.net/10012/7860.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ali Yusuf, Yusuf. “Green Petroleum Refining - Mathematical Models for Optimizing Petroleum Refining Under Emission Constraints.” 2013. Web. 14 Dec 2019.

Vancouver:

Ali Yusuf Y. Green Petroleum Refining - Mathematical Models for Optimizing Petroleum Refining Under Emission Constraints. [Internet] [Thesis]. University of Waterloo; 2013. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/10012/7860.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ali Yusuf Y. Green Petroleum Refining - Mathematical Models for Optimizing Petroleum Refining Under Emission Constraints. [Thesis]. University of Waterloo; 2013. Available from: http://hdl.handle.net/10012/7860

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

2. Nie, Yisu. Integration of Scheduling and Dynamic Optimization: Computational Strategies and Industrial Applications.

Degree: 2014, Carnegie Mellon University

URL: http://repository.cmu.edu/dissertations/380

► This thesis study focuses on the development of model-based optimization strategies for the integration of process scheduling and dynamic optimization, and applications of the integrated… (more)

▼ This thesis study focuses on the development of model-based optimization strategies for the integration of process scheduling and dynamic optimization, and applications of the integrated approaches to industrial polymerization processes. The integrated decision making approaches seek to explore the synergy between production schedule design and process unit control to improve process performance. The integration problem has received much attention from both the academia and industry since the past decade. For scheduling, we adopt two formulation approaches based on the state equipment network and resource task network, respectively. For dynamic optimization, we rely on the simultaneous collocation strategy to discretize the differential-algebraic equations. Two integrated formulations are proposed that result in mixed discrete/dynamic models, and solution methods based on decomposition approaches are addressed. A class of ring-opening polymerization processes are used for our industrial case studies. We develop rigorous dynamic reactor models for both semi-batch homopolymerization and copolymerization operations. The reactor models are based on first-principles such as mass and heat balances, reaction kinetics and vapor-liquid equilibria. We derive reactor models with both the population balance method and method of moments. The obtained reactor models are validated using historical plant data. Polymerization recipes are optimized with dynamic optimization algorithms to reduce polymerization times by modifying operating conditions such as the reactor temperature and monomer feed rates over time. Next, we study scheduling methods that involve multiple process units and products. The resource task network scheduling model is reformulated to the state space form that offers a good platform for incorporating dynamic models. Lastly for the integration study, we investigate a process with two parallel polymerization reactors and downstream storage and purification units. The dynamic behaviors of the two reactors are coupled through shared cooling resources. We formulate the integration problem by combining the state space resource task network model with the moment reactor model. The case study results indicate promising improvements of process performances by applying dynamic optimization and scheduling optimization separately, and more importantly, the integration of the two.

Subjects/Keywords: process scheduling; dynamic optimization; process integration; polymerization

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APA (6^th Edition):

Nie, Y. (2014). Integration of Scheduling and Dynamic Optimization: Computational Strategies and Industrial Applications. (Thesis). Carnegie Mellon University. Retrieved from http://repository.cmu.edu/dissertations/380

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Nie, Yisu. “Integration of Scheduling and Dynamic Optimization: Computational Strategies and Industrial Applications.” 2014. Thesis, Carnegie Mellon University. Accessed December 14, 2019. http://repository.cmu.edu/dissertations/380.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Nie, Yisu. “Integration of Scheduling and Dynamic Optimization: Computational Strategies and Industrial Applications.” 2014. Web. 14 Dec 2019.

Vancouver:

Nie Y. Integration of Scheduling and Dynamic Optimization: Computational Strategies and Industrial Applications. [Internet] [Thesis]. Carnegie Mellon University; 2014. [cited 2019 Dec 14]. Available from: http://repository.cmu.edu/dissertations/380.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Nie Y. Integration of Scheduling and Dynamic Optimization: Computational Strategies and Industrial Applications. [Thesis]. Carnegie Mellon University; 2014. Available from: http://repository.cmu.edu/dissertations/380

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

3. Vijayachitra S. Studies on process modeling and optimization;.

Degree: Studies on process modeling and optimization, 2015, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/32160

►

Many of the industrial processes are difficult to model because of newlinetheir complex behavior influential characteristics and operational conditions newlineMathematical models of industrial processes provide… (more)

Subjects/Keywords: electrical engineering; optimization; process modeling

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APA (6^th Edition):

S, V. (2015). Studies on process modeling and optimization;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/32160

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

S, Vijayachitra. “Studies on process modeling and optimization;.” 2015. Thesis, Anna University. Accessed December 14, 2019. http://shodhganga.inflibnet.ac.in/handle/10603/32160.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

S, Vijayachitra. “Studies on process modeling and optimization;.” 2015. Web. 14 Dec 2019.

Vancouver:

S V. Studies on process modeling and optimization;. [Internet] [Thesis]. Anna University; 2015. [cited 2019 Dec 14]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/32160.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

S V. Studies on process modeling and optimization;. [Thesis]. Anna University; 2015. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/32160

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Université Catholique de Louvain

4. Briol, Arnaud. Mémoire projet visant à résoudre la surcharge de l’hôpital de jour du CHU Tivoli grâce à la simulation.

Degree: 2016, Université Catholique de Louvain

URL: http://hdl.handle.net/2078.1/thesis:7123

►

Le but du projet est de fournir au CHU Tivoli une solution à la surcharge de l’hôpital de jour. L’objectif secondaire est de réduire le… (more)

▼

Le but du projet est de fournir au CHU Tivoli une solution à la surcharge de l’hôpital de jour. L’objectif secondaire est de réduire le temps d’attentes des patients avant leur intervention. Dans cette optique, nous démarrons le projet en observant le fonctionnement du service. Ensuite, nous analysons les données de l’année 2015 sur la patientèle du service. Cette analyse nous permet de mettre en lumière qu’il est, actuellement, impossible pour le service d’absorber la demande de patients. En effet, l’hôpital dispose de 24 lits. Or, il y a en moyenne plus de 25 patients par jour. L’organisation actuelle permet au service d’accueillir qu’un patient par lit par jour. Il en résulte que le service est surchargé dans 50,85% des jours. Grâce aux informations collectées au cours de la période préliminaire, nous créons une simulation du trajet du patient dans l’hôpital. Celle-ci permet de tester une organisation alternative du service. Le principe de cette nouvelle organisation est d’hospitaliser les patients en deux vagues distinctes. La première vague arriverait à 7h00 et la seconde à 13h30. L’objectif est de permettre à des patients opérés au matin de sortir dès 13h. Certains lits pourraient alors être utilisés plusieurs fois sur une même journée. La seule contrainte est qu’il faut établir une priorité aux interventions ambulatoires au matin. La simulation a permis de mettre en évidence quelle proportion de patients faire admettre au matin. Bien que 50% d’admission au matin obtienne le taux de surcharge le plus faible, le nombre d’opérations devant être effectué en dehors des heures d’ouverture du bloc à exploser. En effet, nous ferions venir autant de patients au matin que l’après-midi malgré une période d’opération plus courte l’après-midi. La proportion de 60% de patients au matin a donc été conservée. Nous évitons alors de reporter ou retarder plus d’opérations que la situation actuelle. En se faisant, le pourcentage de jours en surcharge est passé à 5,5%-18,5%. Nous ne pouvons actuellement pas déterminer la valeur exacte. Il est seulement possible de déterminer un intervalle. En effet, la valeur exacte dépend du pourcentage de patients sortant à 13h00. En nous référant aux données de l’année 2015, nous avons estimé que ce pourcentage se trouvait entre 20% et 50%. En ce qui concerne le temps d’hospitalisation, il a été réduit de 82 min à 145 min en moyenne. Encore une fois, il dépend du nombre de patients aptes sortir à 13h.

Master [120] en Ingénieur de gestion, Université catholique de Louvain, 2016

Advisors/Committee Members: UCL - Louvain School of Management, Chevalier, Philippe.

Subjects/Keywords: Simulation; hospital; process optimization

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APA (6^th Edition):

Briol, A. (2016). Mémoire projet visant à résoudre la surcharge de l’hôpital de jour du CHU Tivoli grâce à la simulation. (Thesis). Université Catholique de Louvain. Retrieved from http://hdl.handle.net/2078.1/thesis:7123

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Briol, Arnaud. “Mémoire projet visant à résoudre la surcharge de l’hôpital de jour du CHU Tivoli grâce à la simulation.” 2016. Thesis, Université Catholique de Louvain. Accessed December 14, 2019. http://hdl.handle.net/2078.1/thesis:7123.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Briol, Arnaud. “Mémoire projet visant à résoudre la surcharge de l’hôpital de jour du CHU Tivoli grâce à la simulation.” 2016. Web. 14 Dec 2019.

Vancouver:

Briol A. Mémoire projet visant à résoudre la surcharge de l’hôpital de jour du CHU Tivoli grâce à la simulation. [Internet] [Thesis]. Université Catholique de Louvain; 2016. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/2078.1/thesis:7123.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Briol A. Mémoire projet visant à résoudre la surcharge de l’hôpital de jour du CHU Tivoli grâce à la simulation. [Thesis]. Université Catholique de Louvain; 2016. Available from: http://hdl.handle.net/2078.1/thesis:7123

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Texas – Austin

5. Zhang, Chuwen, active 21st century. Controlling work in process during semiconductor assembly and test operations.

Degree: MSin Engineering, Operations Research and Industrial Engineering, 2017, University of Texas – Austin

URL: http://hdl.handle.net/2152/62683

► In the semiconductor industry, products go through a series of steps over a three- to four-month period that begins with the fabrication of chips and… (more)

Subjects/Keywords: Semiconductor; Work-in-process; Optimization

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APA (6^th Edition):

Zhang, Chuwen, a. 2. c. (2017). Controlling work in process during semiconductor assembly and test operations. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/62683

Chicago Manual of Style (16^th Edition):

Zhang, Chuwen, active 21st century. “Controlling work in process during semiconductor assembly and test operations.” 2017. Masters Thesis, University of Texas – Austin. Accessed December 14, 2019. http://hdl.handle.net/2152/62683.

MLA Handbook (7^th Edition):

Zhang, Chuwen, active 21st century. “Controlling work in process during semiconductor assembly and test operations.” 2017. Web. 14 Dec 2019.

Vancouver:

Zhang, Chuwen a2c. Controlling work in process during semiconductor assembly and test operations. [Internet] [Masters thesis]. University of Texas – Austin; 2017. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/2152/62683.

Council of Science Editors:

Zhang, Chuwen a2c. Controlling work in process during semiconductor assembly and test operations. [Masters Thesis]. University of Texas – Austin; 2017. Available from: http://hdl.handle.net/2152/62683

Texas A&M University

6. Grooms, Daniel Douglas. Optimization of hybrid dynamic/steady-state processes using process integration.

Degree: 2009, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-1752

► Much research in the area of process integration has focused on steady-state processes. However, there are many process units that are inherently unsteady-state or perform… (more)

Subjects/Keywords: Process Optimization; Process Integration; Scheduling; Process Design; Unsteady-state

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APA (6^th Edition):

Grooms, D. D. (2009). Optimization of hybrid dynamic/steady-state processes using process integration. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-1752

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Grooms, Daniel Douglas. “Optimization of hybrid dynamic/steady-state processes using process integration.” 2009. Thesis, Texas A&M University. Accessed December 14, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-1752.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Grooms, Daniel Douglas. “Optimization of hybrid dynamic/steady-state processes using process integration.” 2009. Web. 14 Dec 2019.

Vancouver:

Grooms DD. Optimization of hybrid dynamic/steady-state processes using process integration. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1752.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Grooms DD. Optimization of hybrid dynamic/steady-state processes using process integration. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1752

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Waterloo

7. Koller, Robert. Optimization Algorithms for Integration of Design, Control, and Scheduling for Chemical Processes Subject to Disturbances and Uncertainty.

Degree: 2017, University of Waterloo

URL: http://hdl.handle.net/10012/12585

► Optimization of multiproduct processes is vital for process performance, especially during dynamic transitions between operating points. However, determining the optimal operating conditions can be a… (more)

▼ Optimization of multiproduct processes is vital for process performance, especially during dynamic transitions between operating points. However, determining the optimal operating conditions can be a challenging problem, since many aspects must be considered, such as design, control, and scheduling. This problem is further complicated by process disturbances and parameter uncertainty, which are typically randomly distributed variables that traditional methods of optimization are not equipped to handle. Multi-scenario approaches that consider every possible realization are also impractical, as they quickly become computationally prohibitive for large-scale applications. Therefore, new methods are emerging for generating robust solutions without adding excessive complexity. This thesis focuses on the development of two of those optimization methods for the integration of design, control, and scheduling for multi-product processes in the presence of disturbances and parameter uncertainty. Firstly, a critical set method is presented, which decomposes the overall problem into flexibility and feasibility analyses. The flexibility problem is solved under a critical (worst-case) set of disturbance and uncertainty realizations, which is faster than considering the entire (non-critical) set. The feasibility problem evaluates the dynamic feasibility of the entire set, and updates the critical set accordingly, adding any realizations that are found to be infeasible. The algorithm terminates when a robust solution is found, which is feasible under all identified scenarios. To account for the importance of grade transitions in multiproduct processes, the proposed framework integrates scheduling into the dynamic model by the use of flexible finite elements. The critical set method is applied to two case studies, a continuous stirred-tank reactor (CSTR) and a plug flow reactor (PFR), both subject to process disturbance and parameter uncertainty. The proposed method is shown to return robust solutions that are of higher quality than the traditional sequential method, which determines the design, control, and scheduling independently. This work also considers the development of a back-off method for integration of design, control, and scheduling for multi-product systems subject to disturbances and parameter uncertainty. The key feature of this method is the consideration of stochastic random variables for the process disturbance and parameter uncertainty, while most works discretize these variables. This method employs Monte Carlo (MC) sampling to generate a large number of random realizations, and simulate the system to determine feasibility. Back-off terms are determined and incorporated into a new flexibility analysis to approximate the effect of stochastic uncertainty and disturbances. The back-off terms are refined through successive iterations, and the algorithm converges, terminating on a solution that is robust to a specified level of process variability. The back-off method is applied to a similar CSTR case study for which…

Subjects/Keywords: process design; process scheduling; process control; simultaneous optimization; back-off method

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APA (6^th Edition):

Koller, R. (2017). Optimization Algorithms for Integration of Design, Control, and Scheduling for Chemical Processes Subject to Disturbances and Uncertainty. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/12585

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Koller, Robert. “Optimization Algorithms for Integration of Design, Control, and Scheduling for Chemical Processes Subject to Disturbances and Uncertainty.” 2017. Thesis, University of Waterloo. Accessed December 14, 2019. http://hdl.handle.net/10012/12585.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Koller, Robert. “Optimization Algorithms for Integration of Design, Control, and Scheduling for Chemical Processes Subject to Disturbances and Uncertainty.” 2017. Web. 14 Dec 2019.

Vancouver:

Koller R. Optimization Algorithms for Integration of Design, Control, and Scheduling for Chemical Processes Subject to Disturbances and Uncertainty. [Internet] [Thesis]. University of Waterloo; 2017. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/10012/12585.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Koller R. Optimization Algorithms for Integration of Design, Control, and Scheduling for Chemical Processes Subject to Disturbances and Uncertainty. [Thesis]. University of Waterloo; 2017. Available from: http://hdl.handle.net/10012/12585

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Pretoria

8. Coetzee, Willem Andries Sternberg. Steam system network synthesis using process integration.

Degree: Chemical Engineering, 2008, University of Pretoria

URL: http://hdl.handle.net/2263/27531

► Steam boilers are used to generate steam in order to meet cold process heat requirements. The most common heat exchanger network layout associated with the… (more)

Subjects/Keywords: Process integration; Optimization; Synthesis; Utility; Milp; UCTD

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APA (6^th Edition):

Coetzee, W. A. (2008). Steam system network synthesis using process integration. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/27531

Chicago Manual of Style (16^th Edition):

Coetzee, Willem Andries. “Steam system network synthesis using process integration.” 2008. Masters Thesis, University of Pretoria. Accessed December 14, 2019. http://hdl.handle.net/2263/27531.

MLA Handbook (7^th Edition):

Coetzee, Willem Andries. “Steam system network synthesis using process integration.” 2008. Web. 14 Dec 2019.

Vancouver:

Coetzee WA. Steam system network synthesis using process integration. [Internet] [Masters thesis]. University of Pretoria; 2008. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/2263/27531.

Council of Science Editors:

Coetzee WA. Steam system network synthesis using process integration. [Masters Thesis]. University of Pretoria; 2008. Available from: http://hdl.handle.net/2263/27531

Texas A&M University

9. Tora, Eman Abdel-Hakim Aly Mohamed. Optimal design and integration of solar systems and fossil fuels for process cogeneration.

Degree: 2009, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2907

► Because of the fluctuations in incident solar power, outlet power also changes over time (e.g., on an hourly basis or seasonally). If there is a… (more)

Subjects/Keywords: Solar energy; process; cogeneration; energy integration; optimization

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APA (6^th Edition):

Tora, E. A. A. M. (2009). Optimal design and integration of solar systems and fossil fuels for process cogeneration. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2907

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tora, Eman Abdel-Hakim Aly Mohamed. “Optimal design and integration of solar systems and fossil fuels for process cogeneration.” 2009. Thesis, Texas A&M University. Accessed December 14, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-2907.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tora, Eman Abdel-Hakim Aly Mohamed. “Optimal design and integration of solar systems and fossil fuels for process cogeneration.” 2009. Web. 14 Dec 2019.

Vancouver:

Tora EAAM. Optimal design and integration of solar systems and fossil fuels for process cogeneration. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2907.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tora EAAM. Optimal design and integration of solar systems and fossil fuels for process cogeneration. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2907

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

10. Bao, Buping. Process Design and Optimization of Biorefining Pathways.

Degree: 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-10836

► Synthesis and screening of technology alternatives is a key process-development activity in the process industries. Recently, this has become particularly important for the conceptual design… (more)

▼ Synthesis and screening of technology alternatives is a key process-development activity in the process industries. Recently, this has become particularly important for the conceptual design of biorefineries. A structural representation (referred to as the chemical species/conversion operator) is introduced. It is used to track individual chemicals while allowing for the processing of multiple chemicals in processing technologies. The representation is used to embed potential configurations of interest. An optimization approach is developed to screen and determine optimum network configurations for various technology pathways using simple data. The design of separation systems is an essential component in the design of biorefineries and hydrocarbon processing facilities. This work introduces methodical techniques for the synthesis and selection of separation networks. A shortcut method is developed for the separation of intermediates and products in biorefineries. The optimal allocation of conversion technologies and recycle design is determined in conjunction with the selection of the separation systems. The work also investigates the selection of separation systems for gas-to-liquid (GTL) technologies using supercritical Fischer-Tropsch synthesis. The task of the separation network is to exploit the pressure profile of the process, the availability of the solvent as a process product, and the techno-economic advantages of recovering and recycling the solvent. Case studies are solved to illustrate the effectiveness of the various techniques developed in this work. The result shows 1, the optimal pathway based on minimum payback period for cost efficiency is pathway through alcohol fermentation and oligomerized to gasoline as 11.7 years with 1620 tonne/day of feedstock. When the capacity is increased to 120,000 BPD of gasoline production, the payback period will be reduced to 3.4 years. 2, from the proposed separation configuration, the solvent is recovered 99% from the FT products, while not affecting the heavier components recovery and light gas recovery, and 99% of waster is recycled. The SCF-FT case is competitive with the traditional FT case with similar ROI 0.2. 3, The proposed process has comparable major parts cost with typical GTL process and the capital investment per BPD is within the range of existing GTL plant. Advisors/Committee Members: Elbashir, Nimir (advisor), El-Halwagi, Mahmoud (advisor), Mannan, M. Sam (committee member), Ehlig-Economides, Christine (committee member).

Subjects/Keywords: biorefinery; biofuel; optimization; process synthesis; integration

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APA (6^th Edition):

Bao, B. (2012). Process Design and Optimization of Biorefining Pathways. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-10836

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bao, Buping. “Process Design and Optimization of Biorefining Pathways.” 2012. Thesis, Texas A&M University. Accessed December 14, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-10836.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bao, Buping. “Process Design and Optimization of Biorefining Pathways.” 2012. Web. 14 Dec 2019.

Vancouver:

Bao B. Process Design and Optimization of Biorefining Pathways. [Internet] [Thesis]. Texas A&M University; 2012. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-10836.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bao B. Process Design and Optimization of Biorefining Pathways. [Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-10836

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

11. Vijayan S. Process parameter optimization and Characterization of friction stir Welding of aluminium alloy AA 5083;.

Degree: Process parameter optimization and Characterization of friction stir Welding of aluminium alloy AA 5083, 2014, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/30463

►

AA 5083 is an Al Mg based alloy which possesses many newlineinteresting characteristics such as structural material moderately high newlinestrength good corrosion resistance and low… (more)

Subjects/Keywords: Friction Stir Welding; process parameter optimization

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APA (6^th Edition):

S, V. (2014). Process parameter optimization and Characterization of friction stir Welding of aluminium alloy AA 5083;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/30463

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

S, Vijayan. “Process parameter optimization and Characterization of friction stir Welding of aluminium alloy AA 5083;.” 2014. Thesis, Anna University. Accessed December 14, 2019. http://shodhganga.inflibnet.ac.in/handle/10603/30463.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

S, Vijayan. “Process parameter optimization and Characterization of friction stir Welding of aluminium alloy AA 5083;.” 2014. Web. 14 Dec 2019.

Vancouver:

S V. Process parameter optimization and Characterization of friction stir Welding of aluminium alloy AA 5083;. [Internet] [Thesis]. Anna University; 2014. [cited 2019 Dec 14]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/30463.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

S V. Process parameter optimization and Characterization of friction stir Welding of aluminium alloy AA 5083;. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/30463

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

12. Munagalla, Prabhavathy. Production and process optimization off recombinant human erythropoiietin in serum free medium using r chinese hamster ovary cells; -.

Degree: Biochemistry, 2011, Acharya Nagarjuna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/38968

None

Bibliography p.236 - 263 and Appendix p.265 - 288

Advisors/Committee Members: Rao, Sashiidhar B.

Subjects/Keywords: optimization; process; Production

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APA (6^th Edition):

Munagalla, P. (2011). Production and process optimization off recombinant human erythropoiietin in serum free medium using r chinese hamster ovary cells; -. (Thesis). Acharya Nagarjuna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/38968

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Munagalla, Prabhavathy. “Production and process optimization off recombinant human erythropoiietin in serum free medium using r chinese hamster ovary cells; -.” 2011. Thesis, Acharya Nagarjuna University. Accessed December 14, 2019. http://shodhganga.inflibnet.ac.in/handle/10603/38968.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Munagalla, Prabhavathy. “Production and process optimization off recombinant human erythropoiietin in serum free medium using r chinese hamster ovary cells; -.” 2011. Web. 14 Dec 2019.

Vancouver:

Munagalla P. Production and process optimization off recombinant human erythropoiietin in serum free medium using r chinese hamster ovary cells; -. [Internet] [Thesis]. Acharya Nagarjuna University; 2011. [cited 2019 Dec 14]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/38968.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Munagalla P. Production and process optimization off recombinant human erythropoiietin in serum free medium using r chinese hamster ovary cells; -. [Thesis]. Acharya Nagarjuna University; 2011. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/38968

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Pretoria

13. [No author]. Steam system network synthesis using process integration .

Degree: 2008, University of Pretoria

URL: http://upetd.up.ac.za/thesis/available/etd-08252008-165312/

► Steam boilers are used to generate steam in order to meet cold process heat requirements. The most common heat exchanger network layout associated with the… (more)

Subjects/Keywords: Process integration; Optimization; Synthesis; Utility; Milp; UCTD

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APA (6^th Edition):

author], [. (2008). Steam system network synthesis using process integration . (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-08252008-165312/

Chicago Manual of Style (16^th Edition):

author], [No. “Steam system network synthesis using process integration .” 2008. Masters Thesis, University of Pretoria. Accessed December 14, 2019. http://upetd.up.ac.za/thesis/available/etd-08252008-165312/.

MLA Handbook (7^th Edition):

author], [No. “Steam system network synthesis using process integration .” 2008. Web. 14 Dec 2019.

Vancouver:

author] [. Steam system network synthesis using process integration . [Internet] [Masters thesis]. University of Pretoria; 2008. [cited 2019 Dec 14]. Available from: http://upetd.up.ac.za/thesis/available/etd-08252008-165312/.

Council of Science Editors:

author] [. Steam system network synthesis using process integration . [Masters Thesis]. University of Pretoria; 2008. Available from: http://upetd.up.ac.za/thesis/available/etd-08252008-165312/

Penn State University

14. Hatim, Qais Yahya. Integrating Sustainability in Manufacturing Process Planning.

Degree: PhD, Industrial Engineering, 2015, Penn State University

URL: https://etda.libraries.psu.edu/catalog/26369

► More recently, interest in designing products and manufacturing processes with major consideration given to the resources used and waste produced over the entirety of product/process… (more)

▼ More recently, interest in designing products and manufacturing processes with major consideration given to the resources used and waste produced over the entirety of product/process life cycle, viz. sustainable manufacturing has increased. Unlike design and manufacturing process development activities that generally have access to a wealth of material information, sustainability assessment activities are generally made difficult by lack of a centralized source of information to incorporate sustainability knowledge into current manufacturing life cycle strategies. Even though considerable research has been accomplished in sustainable manufacturing domain, its application to real life problems is known to be in the early stages due to complexity in information representation, model compositions, system integrations, and computation. Moreover, isolated activities of process planning within the gate-to-gate life cycle can lead to localized solutions in sustainability assessment. Integrating operation plans and process plans provides globalized sustainable and productive solutions in the manufacturing gate-to-gate life cycle. This thesis, first, presents an attempt to understand these complexities for building material information model by addressing the requirements for defining a high-level material information model for sustainability that can capture this information across different life cycle stages as well as primary stakeholders. Second, the performance of job shop manufacturing is often related to diversified activities that impact sustainability and productivity. Process and operation plans are particularly considered as the main activities that significantly impact different key performance indicators. The research proposed a systematic methodology for supporting manufacturing decision-making regarding sustainability and productivity assessment by integrating these plans. In the first stage the different ways in which materials and material information influence the decision-making process were analyzed. For this purpose information modeling techniques were employed to generate manufacturing scenarios. Activity models were generated and analyzed to collect and categorize key concepts towards constructing a Materials Information Model for Sustainability. The analysis helped in identifying locations where materials factor into the decision-making process, the key information requirements that help build a material information model for sustainability. In the second stage of this research, a systematic methodology was developed for enabling the sustainability and productivity performance assessment for integrated process and operation plans at the machine cell level of manufacturing systems. Selection of processes and operations is accomplished through building a Multi-Criteria-Decision-Making formulation. This formulation enables the combined assessment of sustainability and productivity in selecting the optimum process and operation plans. Analytical Hierarchical Process (AHP) is employed to address the problem…

Subjects/Keywords: Sustainability; Process Planning; Simulation; Optimization; Methodology

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APA (6^th Edition):

Hatim, Q. Y. (2015). Integrating Sustainability in Manufacturing Process Planning. (Doctoral Dissertation). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/26369

Chicago Manual of Style (16^th Edition):

Hatim, Qais Yahya. “Integrating Sustainability in Manufacturing Process Planning.” 2015. Doctoral Dissertation, Penn State University. Accessed December 14, 2019. https://etda.libraries.psu.edu/catalog/26369.

MLA Handbook (7^th Edition):

Hatim, Qais Yahya. “Integrating Sustainability in Manufacturing Process Planning.” 2015. Web. 14 Dec 2019.

Vancouver:

Hatim QY. Integrating Sustainability in Manufacturing Process Planning. [Internet] [Doctoral dissertation]. Penn State University; 2015. [cited 2019 Dec 14]. Available from: https://etda.libraries.psu.edu/catalog/26369.

Council of Science Editors:

Hatim QY. Integrating Sustainability in Manufacturing Process Planning. [Doctoral Dissertation]. Penn State University; 2015. Available from: https://etda.libraries.psu.edu/catalog/26369

15. Washington, Ian D. Large-Scale Dynamic Optimization Under Uncertainty using Parallel Computing.

Degree: PhD, 2016, McMaster University

URL: http://hdl.handle.net/11375/19092

►

This research focuses on the development of a solution strategy for the optimization of large-scale dynamic systems under uncertainty. Uncertainty resides naturally within the external… (more)

▼

This research focuses on the development of a solution strategy for the optimization of large-scale dynamic systems under uncertainty. Uncertainty resides naturally within the external forces posed to the system or from within the system itself. For example, in chemical process systems, external inputs include flow rates, temperatures or compositions; while internal sources include kinetic or mass transport parameters; and empirical parameters used within thermodynamic correlations and expressions. The goal in devising a dynamic optimization approach which explicitly accounts for uncertainty is to do so in a manner which is computationally tractable and is general enough to handle various types and sources of uncertainty. The approach developed in this thesis follows a so-called multiperiod technique whereby the infinite dimensional uncertainty space is discretized at numerous points (known as periods or scenarios) which creates different possible realizations of the uncertain parameters. The resulting optimization formulation encompasses an approximated expected value of a chosen objective functional subject to a dynamic model for all the generated realizations of the uncertain parameters. The dynamic model can be solved, using an appropriate numerical method, in an embedded manner for which the solution is used to construct the optimization formulation constraints; or alternatively the model could be completely discretized over the temporal domain and posed directly as part of the optimization formulation. Our approach in this thesis has mainly focused on the embedded model technique for dynamic optimization which can either follow a single- or multiple-shooting solution method. The first contribution of the thesis investigates a combined multiperiod multiple-shooting dynamic optimization approach for the design of dynamic systems using ordinary differential equation (ODE) or differential-algebraic equation (DAE) process models. A major aspect of this approach is the analysis of the parallel solution of the embedded model within the optimization formulation. As part of this analysis, we further consider the application of the dynamic optimization approach to several design and operation applications. Another vmajor contribution of the thesis is the development of a nonlinear programming (NLP) solver based on an approach that combines sequential quadratic programming (SQP) with an interior-point method (IPM) for the quadratic programming subproblem. A unique aspect of the approach is that the inherent structure (and parallelism) of the multiperiod formulation is exploited at the linear algebra level within the SQP-IPM nonlinear programming algorithm using an explicit Schur-complement decomposition. Our NLP solution approach is further assessed using several static and dynamic optimization benchmark examples.

Thesis

Doctor of Philosophy (PhD)

Advisors/Committee Members: Swartz, Christopher L.E., Chemical Engineering.

Subjects/Keywords: Dynamic Optimization; DAE process models; Parallel Computing

1 more image…

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APA (6^th Edition):

Washington, I. D. (2016). Large-Scale Dynamic Optimization Under Uncertainty using Parallel Computing. (Doctoral Dissertation). McMaster University. Retrieved from http://hdl.handle.net/11375/19092

Chicago Manual of Style (16^th Edition):

Washington, Ian D. “Large-Scale Dynamic Optimization Under Uncertainty using Parallel Computing.” 2016. Doctoral Dissertation, McMaster University. Accessed December 14, 2019. http://hdl.handle.net/11375/19092.

MLA Handbook (7^th Edition):

Washington, Ian D. “Large-Scale Dynamic Optimization Under Uncertainty using Parallel Computing.” 2016. Web. 14 Dec 2019.

Vancouver:

Washington ID. Large-Scale Dynamic Optimization Under Uncertainty using Parallel Computing. [Internet] [Doctoral dissertation]. McMaster University; 2016. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/11375/19092.

Council of Science Editors:

Washington ID. Large-Scale Dynamic Optimization Under Uncertainty using Parallel Computing. [Doctoral Dissertation]. McMaster University; 2016. Available from: http://hdl.handle.net/11375/19092

Virginia Tech

16. Chang, Ai-Fu. Process Modeling of Next-Generation Liquid Fuel Production - Commercial Hydrocracking Process and Biodiesel Manufacturing.

Degree: PhD, Chemical Engineering, 2011, Virginia Tech

URL: http://hdl.handle.net/10919/58043

► This dissertation includes two process modeling studies – (1) predictive modeling of large-scale integrated refinery reaction and fractionation systems from plant data â€“ hydrocracking process;… (more)

▼ This dissertation includes two process modeling studies – (1) predictive modeling of large-scale integrated refinery reaction and fractionation systems from plant data â€“ hydrocracking process; and (2) integrated process modeling and product design of biodiesel manufacturing. \r\n1. Predictive Modeling of Large-Scale Integrated Refinery Reaction and Fractionation Systems from Plant Data – Hydrocracking Processes: This work represents a workflow to develop, validate and apply a predictive model for rating and optimization of large-scale integrated refinery reaction and fractionation systems from plant data. We demonstrate the workflow with two commercial processes – medium-pressure hydrocracking unit with a feed capacity of 1 million ton per year and high-pressure hydrocracking unit with a feed capacity of 2 million ton per year in the Asia Pacific. This work represents the detailed procedure for data acquisition to ensure accurate mass balances, and for implementing the workflow using Excel spreadsheets and a commercial software tool, Aspen HYSYS from Aspen Technology, Inc. The workflow includes special tools to facilitate an accurate transition from lumped kinetic components used in reactor modeling to the boiling point based pseudo-components required in the rigorous tray-by-tray distillation simulation. Two to three months of plant data are used to validate models' predictability. The resulting models accurately predict unit performance, product yields, and fuel properties from the corresponding operating conditions.\r\n2. Integrated Process Modeling and Product Design of Biodiesel Manufacturing: This work represents first a comprehensive review of published literature pertaining to developing an integrated process modeling and product design of biodiesel manufacturing, and identifies those deficient areas for further development. It also represents new modeling tools and a methodology for the integrated process modeling and product design of an entire biodiesel manufacturing train. We demonstrate the methodology by simulating an integrated process to predict reactor and \r\nseparator performance, stream conditions, and product qualities with different feedstocks. The results show that the methodology is effective not only for the rating and optimization of an existing biodiesel manufacturing, and but also for the design of a new process to produce biodiesel with specified fuel properties. Advisors/Committee Members: Liu, Y. A. (committeechair), Achenie, Luke E. K. (committee member), Davis, Richey M. (committee member), Durrill, Preston L. (committee member).

Subjects/Keywords: product design; process optimization; biodiesel; hydrocracking; model

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APA (6^th Edition):

Chang, A. (2011). Process Modeling of Next-Generation Liquid Fuel Production - Commercial Hydrocracking Process and Biodiesel Manufacturing. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/58043

Chicago Manual of Style (16^th Edition):

Chang, Ai-Fu. “Process Modeling of Next-Generation Liquid Fuel Production - Commercial Hydrocracking Process and Biodiesel Manufacturing.” 2011. Doctoral Dissertation, Virginia Tech. Accessed December 14, 2019. http://hdl.handle.net/10919/58043.

MLA Handbook (7^th Edition):

Chang, Ai-Fu. “Process Modeling of Next-Generation Liquid Fuel Production - Commercial Hydrocracking Process and Biodiesel Manufacturing.” 2011. Web. 14 Dec 2019.

Vancouver:

Chang A. Process Modeling of Next-Generation Liquid Fuel Production - Commercial Hydrocracking Process and Biodiesel Manufacturing. [Internet] [Doctoral dissertation]. Virginia Tech; 2011. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/10919/58043.

Council of Science Editors:

Chang A. Process Modeling of Next-Generation Liquid Fuel Production - Commercial Hydrocracking Process and Biodiesel Manufacturing. [Doctoral Dissertation]. Virginia Tech; 2011. Available from: http://hdl.handle.net/10919/58043

University of Ghana

17. Oduro-Yeboah, C. Process Optimization and Product Characteristics of White Kenkey (Nsiho) .

Degree: 2015, University of Ghana

URL: http://ugspace.ug.edu.gh/handle/123456789/21477

► Kenkey, is a maize based sour, stiff dumpling, and it is among the most common fermented cereal food products in Ghana. There are several types… (more)

▼ Kenkey, is a maize based sour, stiff dumpling, and it is among the most common fermented cereal food products in Ghana. There are several types of kenkey, and while some are made from whole maize grains others are produced using degermed/and dehulled maize grains. The kenkey types made using dehulled maize grains are less popular and have largely remained at the level of “ethnic food”, restricted to very few socio-cultural communities. Current trends in urbanization, and the increasing popularity of kenkey among consumers, require larger scale production with consistent quality. The study was carried out to examine the traditional white kenkey process and to optimize the key processing variables in order to obtain reproducible quality white kenkey that will be acceptable to native and non-native consumers. A survey was conducted in three white kenkey production districts to collate information on production, vending and consumption practices. The sensory profile and consumer acceptance of different types of kenkey and other fermented maize products in Ghana were investigated. A total of two hundred consumers including 110 Ghanaians and 90 internationals were used for the consumer test. Traditional white kenkey types were analyzed for their physicochemical, textural, microstructure and sensory characteristics. Physicochemical analysis involved determination of pH, titratable acidity, sugars, lactic acids, minerals, vitamins and amino acids using high performance liquid chromatography procedures. The textural characteristics of white kenkey randomly obtained from traditional processors were determined using instrumental (texture analyser) and consumer assessments. The effects of processing variables of steeping time (12, 30 and 48 h) and dough fermentation time (0, 12 and 24 h) on the physicochemical properties of white kenkey were determined. A (three variable) Box-Behnken design was used to optimize the processing variables of steeping time, steeping temperature, and fermentation time on white kenkey quality parameters of moisture, pH, titratable acidity, glucose and lactic acid content. The optimum region of the process variables was obtained by hedonic tests on the white kenkey using balanced incomplete block design (for k= 5, b= 21, λ=2, r =7) Quantitative Descriptive Analysis (QDA) was conducted on white kenkey made from within and outside the optimum region of the process variables, as well as white kenkey obtained from vendors using a panel of 18 trained members. Consumer acceptance study was conducted using 65 consumers for white kenkey obtained from the optimum region and traditionally processed white kenkey obtained from vendors. The results of the survey showed that there were two main types of white kenkey, nonsweetened white kenkey and sweetened white kenkey to which sugar is added during production. All three procedures involved steeping of dehulled maize grains which is then milled into a meal. In the (procedure at Atimpoku), the meal was not fermented any further but… Advisors/Committee Members: Saalia, F.K (advisor), Amoa-Awua, W (advisor), Mestres, C (advisor), Sakyi-Dawson, E (advisor).

Subjects/Keywords: Process Optimization; Product Characteristics; White Kenkey (Nsiho)

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APA (6^th Edition):

Oduro-Yeboah, C. (2015). Process Optimization and Product Characteristics of White Kenkey (Nsiho) . (Doctoral Dissertation). University of Ghana. Retrieved from http://ugspace.ug.edu.gh/handle/123456789/21477

Chicago Manual of Style (16^th Edition):

Oduro-Yeboah, C. “Process Optimization and Product Characteristics of White Kenkey (Nsiho) .” 2015. Doctoral Dissertation, University of Ghana. Accessed December 14, 2019. http://ugspace.ug.edu.gh/handle/123456789/21477.

MLA Handbook (7^th Edition):

Oduro-Yeboah, C. “Process Optimization and Product Characteristics of White Kenkey (Nsiho) .” 2015. Web. 14 Dec 2019.

Vancouver:

Oduro-Yeboah C. Process Optimization and Product Characteristics of White Kenkey (Nsiho) . [Internet] [Doctoral dissertation]. University of Ghana; 2015. [cited 2019 Dec 14]. Available from: http://ugspace.ug.edu.gh/handle/123456789/21477.

Council of Science Editors:

Oduro-Yeboah C. Process Optimization and Product Characteristics of White Kenkey (Nsiho) . [Doctoral Dissertation]. University of Ghana; 2015. Available from: http://ugspace.ug.edu.gh/handle/123456789/21477

Siauliai University

18. Armanavičienė, Nastė; Armanavičius, Juozas. Valdymo procesų optimizavimas bendrastatybinių darbų įmonėje.

Degree: Master, Marketing and Administration, 2009, Siauliai University

URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090828_131902-64156 ;

►

Magistro darbe yra suformuluotos bendrastatybinių įmonių valdymo problemos, išanalizuoti ir susisteminti įvairių Lietuvos ir užsienio autorių mokslinės literatūros šaltiniai apie organizacijų valdymo proceso esmę, valdymo… (more)

▼

Magistro darbe yra suformuluotos bendrastatybinių įmonių valdymo problemos, išanalizuoti ir susisteminti įvairių Lietuvos ir užsienio autorių mokslinės literatūros šaltiniai apie organizacijų valdymo proceso esmę, valdymo teorijų taikymo praktinius aspektus. Darbe analizuojamos „Izobara“ grupės įmonių valdymo probleminės sritys, išryškinti atotrūkio ir tapatumo taškai tarp praktinės organizacijos veiklos ir valdymo teorijų pagrindinių nuostatų, įmonių vadovų darbo stiliai, numatomos valdymo optimizavimo kryptys. Patvirtinta autorių suformuluota mokslinio tyrimo hipotezė, kad kompleksinis valdymo teorijų teiginių įgyvendinimas praktinėje bendrastatybinės įmonės veikloje didina organizacijos veiklos efektyvumą. Pateikiami pasiūlymai dėl valdymo teorijų nuostatų efektyvesnio panaudojimo organizacijų vadybinės veiklos kokybei gerinti.

In master’s thesis the problems of the management of joint – constructional companies are formulated, different sources of nonfiction related to the essence of the companies’ management process written by various Lithuanian and foreign authors as well as to practical dimensions of the application of management theories are analyzed and structured. In the thesis the problematic fields of companies of the group “Izobara” are analyzed, the points of gaps and identity between the practical activity of organization and the main attitudes of the management theories as well as the work style of the heads of companies and the prospective directions of the management optimization are highlighted. The hypotheses of the research formulated by the authors are certified: it is supposed that the companies of the group “Izobara” have the chance to optimize the management in the structure, budget formation, introduction of management standards and in clustering; the implementation of affirmations of management theories in practical activity of the joint – constructional company increases the effectiveness of the organizational activity. The suggestions about more effective use of provisions of the management theories in order to improve the quality of the organizations’ managerial activity are made.

Advisors/Committee Members: Žičkienė, Skaidrė (Master’s degree committee member), Garalis, Algirdas (Master’s thesis reviewer), Stoškus, Stasys (Master’s thesis supervisor), Merkys, Gediminas (Master’s degree committee chair), Pabedinskaitė, Arnoldina (Master’s degree committee member), Tijūnaitienė, Rigita (Master’s degree committee member), Stoškus, Stasys (Master’s degree committee member).

Subjects/Keywords: Valdymas; Procesas; Optimizavimas; Management; Process; Optimization

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APA (6^th Edition):

Armanavičius, Juozas, A Nastė;. (2009). Valdymo procesų optimizavimas bendrastatybinių darbų įmonėje. (Masters Thesis). Siauliai University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090828_131902-64156 ;

Chicago Manual of Style (16^th Edition):

Armanavičius, Juozas, Armanavičienė, Nastė;. “Valdymo procesų optimizavimas bendrastatybinių darbų įmonėje.” 2009. Masters Thesis, Siauliai University. Accessed December 14, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090828_131902-64156 ;.

MLA Handbook (7^th Edition):

Armanavičius, Juozas, Armanavičienė, Nastė;. “Valdymo procesų optimizavimas bendrastatybinių darbų įmonėje.” 2009. Web. 14 Dec 2019.

Vancouver:

Armanavičius, Juozas A Nastė;. Valdymo procesų optimizavimas bendrastatybinių darbų įmonėje. [Internet] [Masters thesis]. Siauliai University; 2009. [cited 2019 Dec 14]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090828_131902-64156 ;.

Council of Science Editors:

Armanavičius, Juozas A Nastė;. Valdymo procesų optimizavimas bendrastatybinių darbų įmonėje. [Masters Thesis]. Siauliai University; 2009. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090828_131902-64156 ;

University of Waikato

19. Ma, Jinjin. Parameter Tuning Using Gaussian Processes .

Degree: 2012, University of Waikato

URL: http://hdl.handle.net/10289/6497

► Most machine learning algorithms require us to set up their parameter values before applying these algorithms to solve problems. Appropriate parameter settings will bring good… (more)

▼ Most machine learning algorithms require us to set up their parameter values before applying these algorithms to solve problems. Appropriate parameter settings will bring good performance while inappropriate parameter settings generally result in poor modelling. Hence, it is necessary to acquire the “best” parameter values for a particular algorithm before building the model. The “best” model not only reflects the “real” function and is well fitted to existing points, but also gives good performance when making predictions for new points with previously unseen values. A number of methods exist that have been proposed to optimize parameter values. The basic idea of all such methods is a trial-and-error process whereas the work presented in this thesis employs Gaussian process (GP) regression to optimize the parameter values of a given machine learning algorithm. In this thesis, we consider the optimization of only two-parameter learning algorithms. All the possible parameter values are specified in a 2-dimensional grid in this work. To avoid brute-force search, Gaussian Process Optimization (GPO) makes use of “expected improvement” to pick useful points rather than validating every point of the grid step by step. The point with the highest expected improvement is evaluated using cross-validation and the resulting data point is added to the training set for the Gaussian process model. This process is repeated until a stopping criterion is met. The final model is built using the learning algorithm based on the best parameter values identified in this process. In order to test the effectiveness of this optimization method on regression and classification problems, we use it to optimize parameters of some well-known machine learning algorithms, such as decision tree learning, support vector machines and boosting with trees. Through the analysis of experimental results obtained on datasets from the UCI repository, we find that the GPO algorithm yields competitive performance compared with a brute-force approach, while exhibiting a distinct advantage in terms of training time and number of cross-validation runs. Overall, the GPO method is a promising method for the optimization of parameter values in machine learning. Advisors/Committee Members: Frank, Eibe (advisor), Holmes, Geoffrey (advisor).

Subjects/Keywords: Parameter Tunning; Gaussian Process Optimization; Machine Learning

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APA (6^th Edition):

Ma, J. (2012). Parameter Tuning Using Gaussian Processes . (Masters Thesis). University of Waikato. Retrieved from http://hdl.handle.net/10289/6497

Chicago Manual of Style (16^th Edition):

Ma, Jinjin. “Parameter Tuning Using Gaussian Processes .” 2012. Masters Thesis, University of Waikato. Accessed December 14, 2019. http://hdl.handle.net/10289/6497.

MLA Handbook (7^th Edition):

Ma, Jinjin. “Parameter Tuning Using Gaussian Processes .” 2012. Web. 14 Dec 2019.

Vancouver:

Ma J. Parameter Tuning Using Gaussian Processes . [Internet] [Masters thesis]. University of Waikato; 2012. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/10289/6497.

Council of Science Editors:

Ma J. Parameter Tuning Using Gaussian Processes . [Masters Thesis]. University of Waikato; 2012. Available from: http://hdl.handle.net/10289/6497

20. Fuerle, Fabian. Structural optimization in engineering design with a focus on process automation.

Degree: PhD, 2010, Swansea University

URL: https://cronfa.swan.ac.uk/Record/cronfa42567 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.678682

► The present work is concerned with the advancement of the knowledge of structural optimization in engineering design while focusing on efficient and easy to use… (more)

Subjects/Keywords: 629.8; Structural optimization; Process control; Engineering design

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Fuerle, F. (2010). Structural optimization in engineering design with a focus on process automation. (Doctoral Dissertation). Swansea University. Retrieved from https://cronfa.swan.ac.uk/Record/cronfa42567 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.678682

Chicago Manual of Style (16^th Edition):

Fuerle, Fabian. “Structural optimization in engineering design with a focus on process automation.” 2010. Doctoral Dissertation, Swansea University. Accessed December 14, 2019. https://cronfa.swan.ac.uk/Record/cronfa42567 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.678682.

MLA Handbook (7^th Edition):

Fuerle, Fabian. “Structural optimization in engineering design with a focus on process automation.” 2010. Web. 14 Dec 2019.

Vancouver:

Fuerle F. Structural optimization in engineering design with a focus on process automation. [Internet] [Doctoral dissertation]. Swansea University; 2010. [cited 2019 Dec 14]. Available from: https://cronfa.swan.ac.uk/Record/cronfa42567 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.678682.

Council of Science Editors:

Fuerle F. Structural optimization in engineering design with a focus on process automation. [Doctoral Dissertation]. Swansea University; 2010. Available from: https://cronfa.swan.ac.uk/Record/cronfa42567 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.678682

21. Elsholkami, Mohamed. Energy Management and Environmental Sustainability of the Canadian Oil Sands Industry.

Degree: 2018, University of Waterloo

URL: http://hdl.handle.net/10012/13081

► By 2030 the worldwide energy demand is expected to increase by twofold, in which fossil fuels inevitably will still play a major role in this… (more)

▼ By 2030 the worldwide energy demand is expected to increase by twofold, in which fossil fuels inevitably will still play a major role in this transition. Canadian oil sands, the second largest proven oil reserves, represent a major pillar in providing energy and economic security in North America. Their development on a large scale is hindered due to associated environmental impacts, which include greenhouse gas emissions, water usage, and management of by-products of downstream operations (e.g. Sulfur, petroleum coke, etc.). In this work optimization techniques are employed to address the management of various environmental issues while minimizing the cost of operations of the oil sands industry. In this context, this thesis makes four principal contributions. First, an extensive review is conducted on potential production pathways of renewable energy that can be integrated in the energy infrastructure of oil sands. Renewable technologies such as wind, geothermal, hydro, bioenergy, and solar are considered the most environmentally benign options for energy production that would contribute in achieving significant carbon emissions reductions. A mixed integer non-linear optimization model is developed to simultaneously optimize the capacity expansion and new investment decisions of both conventional and renewable energy technologies, and determine the optimal configurations of oil producers. The rolling horizon approach is used for the consecutive planning of multiple operational periods. To illustrate the applicability of the model, it was applied to a case study based on operational data for oil sands operators in Alberta for the period of 2010 – 2025. Second, a generalized optimization model was developed for the energy planning of energy intensive industries. An extensive superstructure was developed that incorporates conventional, renewable, nuclear, and gasification of alternative fuels (e.g. petroleum coke, asphaltenes, etc.) technologies for the production of energy in the form of power, heat and hydrogen. Various carbon mitigation measures were incorporated, including carbon capture and sequestration, and purchase of carbon credits to satisfy emission targets. Finally, the superstructure incorporated the possibility of selling excess energy commodities in competitive markets. The superstructure is represented by a multi-period mixed integer optimization model with the objective of identifying the optimal set of energy supply technologies to satisfy a set of demands and emission targets at the minimum cost. Time-dependent parameters are incorporated in the model formulation, including energy demands, fuel prices, emission targets, carbon tax, construction lead time, etc. The model is applied to a case study based on the oil sands operations over the planning period 2015–2050. A scenario based approach is used to investigate the effect of variability in energy demand levels, various carbon mitigation policies, and variability in fuel and energy commodity prices. Third, a multi-objective and multi-period…

Subjects/Keywords: Process systems engineering; Optimization; Oil sands; Sustainability

11 more images…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Elsholkami, M. (2018). Energy Management and Environmental Sustainability of the Canadian Oil Sands Industry. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/13081

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Elsholkami, Mohamed. “Energy Management and Environmental Sustainability of the Canadian Oil Sands Industry.” 2018. Thesis, University of Waterloo. Accessed December 14, 2019. http://hdl.handle.net/10012/13081.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Elsholkami, Mohamed. “Energy Management and Environmental Sustainability of the Canadian Oil Sands Industry.” 2018. Web. 14 Dec 2019.

Vancouver:

Elsholkami M. Energy Management and Environmental Sustainability of the Canadian Oil Sands Industry. [Internet] [Thesis]. University of Waterloo; 2018. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/10012/13081.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Elsholkami M. Energy Management and Environmental Sustainability of the Canadian Oil Sands Industry. [Thesis]. University of Waterloo; 2018. Available from: http://hdl.handle.net/10012/13081

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toronto

22. Tang, Tai Fung Stephen. Optimizing Chemical Dosage in Municipal Wastewater Disinfection with Model-based Control.

Degree: 2015, University of Toronto

URL: http://hdl.handle.net/1807/77695

►

This research thesis developed a feedforward model-based chemical dose control algorithm for municipal wastewater disinfection process and an algorithm to simulate unsteady stochastic process conditions… (more)

Subjects/Keywords: CFD; Chemical; Disinfection; Optimization; Process; Wastewater; 0595

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APA (6^th Edition):

Tang, T. F. S. (2015). Optimizing Chemical Dosage in Municipal Wastewater Disinfection with Model-based Control. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/77695

Chicago Manual of Style (16^th Edition):

Tang, Tai Fung Stephen. “Optimizing Chemical Dosage in Municipal Wastewater Disinfection with Model-based Control.” 2015. Masters Thesis, University of Toronto. Accessed December 14, 2019. http://hdl.handle.net/1807/77695.

MLA Handbook (7^th Edition):

Tang, Tai Fung Stephen. “Optimizing Chemical Dosage in Municipal Wastewater Disinfection with Model-based Control.” 2015. Web. 14 Dec 2019.

Vancouver:

Tang TFS. Optimizing Chemical Dosage in Municipal Wastewater Disinfection with Model-based Control. [Internet] [Masters thesis]. University of Toronto; 2015. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1807/77695.

Council of Science Editors:

Tang TFS. Optimizing Chemical Dosage in Municipal Wastewater Disinfection with Model-based Control. [Masters Thesis]. University of Toronto; 2015. Available from: http://hdl.handle.net/1807/77695

University of Ontario Institute of Technology

23. Bender, Dylan J. Integrated topology optimization design and process planning for additive manufacturing.

Degree: 2019, University of Ontario Institute of Technology

URL: http://hdl.handle.net/10155/1081

► Industry 4.0 demands that the systems and processes in today???s product design and manufacturing not just be automated, but to be robust and containing many… (more)

Subjects/Keywords: Topology optimization; Additive manufacturing; Process planning

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APA (6^th Edition):

Bender, D. J. (2019). Integrated topology optimization design and process planning for additive manufacturing. (Thesis). University of Ontario Institute of Technology. Retrieved from http://hdl.handle.net/10155/1081

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bender, Dylan J. “Integrated topology optimization design and process planning for additive manufacturing.” 2019. Thesis, University of Ontario Institute of Technology. Accessed December 14, 2019. http://hdl.handle.net/10155/1081.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bender, Dylan J. “Integrated topology optimization design and process planning for additive manufacturing.” 2019. Web. 14 Dec 2019.

Vancouver:

Bender DJ. Integrated topology optimization design and process planning for additive manufacturing. [Internet] [Thesis]. University of Ontario Institute of Technology; 2019. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/10155/1081.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bender DJ. Integrated topology optimization design and process planning for additive manufacturing. [Thesis]. University of Ontario Institute of Technology; 2019. Available from: http://hdl.handle.net/10155/1081

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University

24. Alshraideh, Hussam. Analysis and Optimization of Profile and Shape Response Experiments.

Degree: PhD, Industrial Engineering, 2011, Penn State University

URL: https://etda.libraries.psu.edu/catalog/12126

► An engineering process that exhibits a response in the form of a univariate (or one-dimensional) curve whenever new experimental conditions are tried is said to… (more)

▼ An engineering process that exhibits a response in the form of a univariate (or one-dimensional) curve whenever new experimental conditions are tried is said to have a profile, or functional response. Likewise, a manufacturing process or engineering system where the response of interest is the geometry of a product or part is said to have a shape response. A shape response can relate to a planar (two-dimensional) geometrical feature, or to a three-dimensional one. The overall theme of this dissertation is the modeling and optimization of engineering processes that have either a profile or a shape response. The models and methods described in this dissertation have application mainly in manufacturing, engineering design, and computer experiments. Statistical Shape Analysis (SSA) is a relatively new area within Statistics. Traditionally the realm of biological applications, it has been recently applied to manufacturing problems. D.G. Kendall, in pioneering work conducted in the 1980’s, defined the shape of an object as the geometrical information that remains once certain similarity transformations, namely, rotations excluding reflections, translations, and dilatations (or dilations) are filtered out. His work is based on a landmark representation of an object, where a landmark consists of the coordinates of a point measured on the object together with a label, with labels that correspond from object to object. This representation turns out to be relevant in manufacturing, since data obtained using a coordinate measuring machine will typically have this appearance. Over the last 20 years, several SSA tests have been proposed to detect differences in the mean shape between objects, but little work exists on the relative merits of these methods. The first part of this dissertation consists of a comprehensive performance analysis of landmark-based tests for mean shape differences. Since the performance of these tests depends on the types of shapes being tested, we consider both shapes that have been studied in the scarce extant literature on the subject, namely triangles and arbitrary polygons with few landmarks, and also consider shapes of specific interest in manufacturing applications, such as circular and cylindrical geometries with tens to hundreds of landmarks. An additional problem studied in this dissertation is that of shape optimization, that is, find the best operating conditions that lead to the most desirable shape of the product under fabrication. Previous tests for shape differences are based on Kendall’s definition of shape, which neglects differences in size between objects since it removes dilation (scale) effects, and make up for this deficiency by testing separately for differences in size. As an alternative, we present statistical tests for differences in form between the objects, where we define the form of an object as the geometrical information that remains once the effect of rotations and translations, but not dilations, is filtered out. We further develop a form optimization method when noise…

Subjects/Keywords: Profile; Shape; Gaussian Process; Geometry; shape optimization; Statistical shape analysis; process optimization.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Alshraideh, H. (2011). Analysis and Optimization of Profile and Shape Response Experiments. (Doctoral Dissertation). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/12126

Chicago Manual of Style (16^th Edition):

Alshraideh, Hussam. “Analysis and Optimization of Profile and Shape Response Experiments.” 2011. Doctoral Dissertation, Penn State University. Accessed December 14, 2019. https://etda.libraries.psu.edu/catalog/12126.

MLA Handbook (7^th Edition):

Alshraideh, Hussam. “Analysis and Optimization of Profile and Shape Response Experiments.” 2011. Web. 14 Dec 2019.

Vancouver:

Alshraideh H. Analysis and Optimization of Profile and Shape Response Experiments. [Internet] [Doctoral dissertation]. Penn State University; 2011. [cited 2019 Dec 14]. Available from: https://etda.libraries.psu.edu/catalog/12126.

Council of Science Editors:

Alshraideh H. Analysis and Optimization of Profile and Shape Response Experiments. [Doctoral Dissertation]. Penn State University; 2011. Available from: https://etda.libraries.psu.edu/catalog/12126

Princeton University

25. Matthews, Logan Ryan. Advancing Robust Optimization for Process Systems Engineering Applications .

Degree: PhD, 2018, Princeton University

URL: http://arks.princeton.edu/ark:/88435/dsp01hh63sz60j

► Robust optimization is a popular method for incorporating parameter uncertainty into optimization models. Whether parameters represent the price of a feedstock or product, the operability… (more)

▼ Robust optimization is a popular method for incorporating parameter uncertainty into optimization models. Whether parameters represent the price of a feedstock or product, the operability of an edge in a network, or length of time required for a unit operation, the actual realization of a parameter can have a tremendous impact on the optimal solution of a model. Robust optimization centers on the use of uncertainty sets, which represent the possible parameter realizations which must be considered. In many cases, this uncertainty set may be directly imposed onto a constraint using duality theory, providing deterministic robust counterparts. In other cases, algorithmic developments are required to tractably solve robust optimization problems, which may occur in multiple stages. This dissertation seeks to expand the theory and application of robust optimization for problems in process systems engineering. Theoretically, this focuses on decreasing the conservatism and increasing the applicability of robust optimization methods. This is addressed first through the development of new, tight bounds on the probability of constraint violation. These probabilistic bounds use the available information regarding the uncertain parameter distributions to determine the likelihood that a constraint becomes infeasible, using either the size of the uncertainty set a priori or the optimal solution values a posteriori. Then, new uncertainty sets are also derived for the case when both bounded and unbounded parameters exist in the same constraint, a previously unaddressed area of robust optimization. Robust optimization is also shown to be effective in two major application areas. First, it is applied to process synthesis and global optimization of liquid transportation fuel refineries from natural gas and biomass, when feedstock prices, product prices, and investment costs are uncertain. The impact of parameter uncertainty on plant topologies and the probabilistic guarantees on profits are seen through multiple case studies. Finally, two-stage robust optimization is also applied to resilient network design, for which edges in a network may fail at random, rendering flow impossible along that edge. In these cases, a tailored column and constraint generation algorithm is developed to solve the two-stage problem, for which the relatively complete recourse assumption does not hold. Advisors/Committee Members: Kevrekidis, Ioannis G (advisor).

Subjects/Keywords: Global Optimization; Optimization Under Uncertainty; Process Synthesis; Resilient Network Design; Robust Optimization

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APA (6^th Edition):

Matthews, L. R. (2018). Advancing Robust Optimization for Process Systems Engineering Applications . (Doctoral Dissertation). Princeton University. Retrieved from http://arks.princeton.edu/ark:/88435/dsp01hh63sz60j

Chicago Manual of Style (16^th Edition):

Matthews, Logan Ryan. “Advancing Robust Optimization for Process Systems Engineering Applications .” 2018. Doctoral Dissertation, Princeton University. Accessed December 14, 2019. http://arks.princeton.edu/ark:/88435/dsp01hh63sz60j.

MLA Handbook (7^th Edition):

Matthews, Logan Ryan. “Advancing Robust Optimization for Process Systems Engineering Applications .” 2018. Web. 14 Dec 2019.

Vancouver:

Matthews LR. Advancing Robust Optimization for Process Systems Engineering Applications . [Internet] [Doctoral dissertation]. Princeton University; 2018. [cited 2019 Dec 14]. Available from: http://arks.princeton.edu/ark:/88435/dsp01hh63sz60j.

Council of Science Editors:

Matthews LR. Advancing Robust Optimization for Process Systems Engineering Applications . [Doctoral Dissertation]. Princeton University; 2018. Available from: http://arks.princeton.edu/ark:/88435/dsp01hh63sz60j

UCLA

26. Albalawi, Fahad Ali. Safe Model Predictive Control Formulations Ensuring Process Operational Safety.

Degree: Electrical Engineering, 2017, UCLA

URL: http://www.escholarship.org/uc/item/5dr6x4r7

► Model predictive control (MPC) is an advanced control strategy widely used in the process industries and beyond. Therefore, industry is interested in the development of… (more)

▼ Model predictive control (MPC) is an advanced control strategy widely used in the process industries and beyond. Therefore, industry is interested in the development of MPC formulations that can enhance safety, reliability, and economic profitability of chemical processes. Motivated by these considerations, this dissertation focuses on the development of methods for integrating process operational safety and process economics within model predictive control system designs. To accomplish these critical control objectives, various economic model predictive control (EMPC) schemes that maintain the process state within a safety region in state-space while optimizing process economics are considered for the first time. The safety region is assumed in the first part of the dissertation to be a level set of a Lyapunov function which is made forward invariant through appropriate MPC design. However, safety-based constraints may define a safety region that is irregularly shaped, and therefore, the safety region may not be taken to be a level set of a Lyapunov function in general. Hence, the second part of this thesis proposes an economic model predictive control (EMPC) formulation that utilizes a Safeness Index function (a function that measures the safeness of points in state-space) as a hard constraint to define a safe region of operation termed the safety zone. Such a safety zone is not restricted to be a level set of a Lyapunov function and may be irregularly shaped. While the two initial safety-based EMPC formulations explicitly handle process safety and economic considerations, they are centralized in nature and may leadto control action calculations that exceed the allowable sampling period. To address this potential practical limitation of the centralized safety-based EMPC designs, the third part of this dissertation addresses the development of distributed EMPC architectures with safety-based constraints. Both sequential and iterative distributed control architectures, and the partitioning of inputs between the various optimization problems in the distributed structure based on their impact on process operational safety, are investigated. Chemical process examples will be used throughout the thesis to demonstrate the applicability and effectiveness of the proposed control methods.

Subjects/Keywords: Chemical engineering; Economics; Electrical engineering; process control; optimization; process safety

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APA (6^th Edition):

Albalawi, F. A. (2017). Safe Model Predictive Control Formulations Ensuring Process Operational Safety. (Thesis). UCLA. Retrieved from http://www.escholarship.org/uc/item/5dr6x4r7

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Albalawi, Fahad Ali. “Safe Model Predictive Control Formulations Ensuring Process Operational Safety.” 2017. Thesis, UCLA. Accessed December 14, 2019. http://www.escholarship.org/uc/item/5dr6x4r7.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Albalawi, Fahad Ali. “Safe Model Predictive Control Formulations Ensuring Process Operational Safety.” 2017. Web. 14 Dec 2019.

Vancouver:

Albalawi FA. Safe Model Predictive Control Formulations Ensuring Process Operational Safety. [Internet] [Thesis]. UCLA; 2017. [cited 2019 Dec 14]. Available from: http://www.escholarship.org/uc/item/5dr6x4r7.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Albalawi FA. Safe Model Predictive Control Formulations Ensuring Process Operational Safety. [Thesis]. UCLA; 2017. Available from: http://www.escholarship.org/uc/item/5dr6x4r7

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Waterloo

27. Zavatti, Vanessa. Monitoring of an Antigen Manufacturing Process Using Fluorescence.

Degree: 2014, University of Waterloo

URL: http://hdl.handle.net/10012/8521

► Bordetella pertussis is one of two Gram-negative bacteria responsible for causing whooping cough in humans, a highly contagious disease that infects the human upper respiratory… (more)

▼ Bordetella pertussis is one of two Gram-negative bacteria responsible for causing whooping cough in humans, a highly contagious disease that infects the human upper respiratory tract. Whole-cell and acellular vaccines have been developed but due to side-effects resulting from whole-cell vaccines, acellular vaccines are currently preferred to prevent this disease. A second bacterium known to cause whooping cough is Bordetella parapertussis, but since it causes less aggressive symptoms, only B. pertussis is utilized in the manufacture of the vaccine. One acellular vaccine is based on four virulence factors: pertussis toxin (PT), filamentous hemagglutinin (FHA), pertactin (PRN), and fimbriae (FIM). The focus of this thesis was to explore the use of spectrofluorometry for monitoring and forecasting the performance of the upstream and downstream operations in the PRN purification process at Sanofi Pasteur. The upstream fermentation process includes a series of reactors of increasing volume where the microorganism is grown under controlled conditions. The PRN purification process involves a series of sequential steps for separating this protein from other proteins for later use in the vaccine. The PRN is precipitated in three steps with ammonium sulphate at three different concentrations. The pellet is collected by centrifugation and dissolved in a buffer solution followed by chromatographic separation. The run-through is then ultra-filtered and diafiltered in two separate steps. The resulting concentrate is dissolved in water and subjected to another chromatographic step and diafiltration. The final filtration of PRN involves a pre-filtration and sterile filtration. Finally, the samples are collected for quality control. The objective of this work was to monitor the process at different steps of the upstream and downstream purification process by multi-wavelength fluorescence spectroscopy in combination with multi-variate statistical methods. From the spectra, it was possible to identify fluorescent compounds, such as amino acids and enzyme cofactors, without performing an additional pre-treatment or purification step. Also, the identification of conformational changes in proteins and formation of complexes, such as NAD(P)-enzyme complex, was possible based on the shift in the emission peaks of the compounds identified. These results demonstrated the feasibility of using this tool for qualitative evaluation of the process. Multivariate methods, such as PCA and PLS, were used to extract relevant information and compress the fluorescence data acquired. PCA was effective for correlating variability in the yield of pertactin to a particular fluorescence fingerprint. As a result of the study, it was concluded that a possible source of variability in the productivity that is observed might be a metabolic shift during the fermentation steps that leads to the accumulation of NAD(P)H (or NAD(P)H-enzyme complex) probably due to oxygen transfer limitations. This conclusion was reached after investigating changes in the…

Subjects/Keywords: antigen manufacturing; process monitoring; spectro-fluorescence; multivariate statistics; process diagnosis; process optimization

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APA (6^th Edition):

Zavatti, V. (2014). Monitoring of an Antigen Manufacturing Process Using Fluorescence. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/8521

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zavatti, Vanessa. “Monitoring of an Antigen Manufacturing Process Using Fluorescence.” 2014. Thesis, University of Waterloo. Accessed December 14, 2019. http://hdl.handle.net/10012/8521.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zavatti, Vanessa. “Monitoring of an Antigen Manufacturing Process Using Fluorescence.” 2014. Web. 14 Dec 2019.

Vancouver:

Zavatti V. Monitoring of an Antigen Manufacturing Process Using Fluorescence. [Internet] [Thesis]. University of Waterloo; 2014. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/10012/8521.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zavatti V. Monitoring of an Antigen Manufacturing Process Using Fluorescence. [Thesis]. University of Waterloo; 2014. Available from: http://hdl.handle.net/10012/8521

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

UCLA

28. ALANQAR, ANAS WAEL. Economic Model Predictive Control of Nonlinear Process Systems Using Empirical Models.

Degree: Chemical Engineering, 2015, UCLA

URL: http://www.escholarship.org/uc/item/8r63q1dj

► Economic model predictive control (EMPC) is a feedback control technique that attemptsto tightly integrate economic optimization and feedback control since it is a predictive control… (more)

Subjects/Keywords: Chemical engineering; CHEMICAL PROCESS; ECONOMIC MODEL PREDICTIVE CONTROL; PROCESS CONTROL; PROCESS ECONOMIC; PROCESS OPTIMIZATION; SYSTEM IDENTIFICATION

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APA (6^th Edition):

ALANQAR, A. W. (2015). Economic Model Predictive Control of Nonlinear Process Systems Using Empirical Models. (Thesis). UCLA. Retrieved from http://www.escholarship.org/uc/item/8r63q1dj

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

ALANQAR, ANAS WAEL. “Economic Model Predictive Control of Nonlinear Process Systems Using Empirical Models.” 2015. Thesis, UCLA. Accessed December 14, 2019. http://www.escholarship.org/uc/item/8r63q1dj.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

ALANQAR, ANAS WAEL. “Economic Model Predictive Control of Nonlinear Process Systems Using Empirical Models.” 2015. Web. 14 Dec 2019.

Vancouver:

ALANQAR AW. Economic Model Predictive Control of Nonlinear Process Systems Using Empirical Models. [Internet] [Thesis]. UCLA; 2015. [cited 2019 Dec 14]. Available from: http://www.escholarship.org/uc/item/8r63q1dj.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

ALANQAR AW. Economic Model Predictive Control of Nonlinear Process Systems Using Empirical Models. [Thesis]. UCLA; 2015. Available from: http://www.escholarship.org/uc/item/8r63q1dj

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

29. Svoboda, Jakub. Návrh implementace prvků procesního managementu v mezinárodní poradenské společnosti .

Degree: 2015, Brno University of Technology

URL: http://hdl.handle.net/11012/40021

► Práce se zaměřuje na identifikaci servisních a administrativních procesů zvolené společnosti a návrhem možností jejich vyčlenění za použití metod business proces managementu od současného týmu,… (more)

Subjects/Keywords: podnikový proces; optimalizace procesů; procesní analýza; procesní mapování; company process; process optimization; process analysis; process mapping

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APA (6^th Edition):

Svoboda, J. (2015). Návrh implementace prvků procesního managementu v mezinárodní poradenské společnosti . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/40021

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Svoboda, Jakub. “Návrh implementace prvků procesního managementu v mezinárodní poradenské společnosti .” 2015. Thesis, Brno University of Technology. Accessed December 14, 2019. http://hdl.handle.net/11012/40021.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Svoboda, Jakub. “Návrh implementace prvků procesního managementu v mezinárodní poradenské společnosti .” 2015. Web. 14 Dec 2019.

Vancouver:

Svoboda J. Návrh implementace prvků procesního managementu v mezinárodní poradenské společnosti . [Internet] [Thesis]. Brno University of Technology; 2015. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/11012/40021.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Svoboda J. Návrh implementace prvků procesního managementu v mezinárodní poradenské společnosti . [Thesis]. Brno University of Technology; 2015. Available from: http://hdl.handle.net/11012/40021

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

The Ohio State University

30. Bautista, Dianne Carrol Tan. A Sequential Design for Approximating the Pareto Front using the Expected Pareto Improvement Function.

Degree: PhD, Statistics, 2009, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1237600537

► We propose a methodology for the simultaneous optimization of multiple goal functions evaluated by a numerically intensive computer model. In a black box multiobjective problem,… (more)

Subjects/Keywords: Statistics; Multiobjective optimization; simulation-based optimization; Pareto optimality; multivariate emulation; Gaussian process; expected improvement

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bautista, D. C. T. (2009). A Sequential Design for Approximating the Pareto Front using the Expected Pareto Improvement Function. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1237600537

Chicago Manual of Style (16^th Edition):

Bautista, Dianne Carrol Tan. “A Sequential Design for Approximating the Pareto Front using the Expected Pareto Improvement Function.” 2009. Doctoral Dissertation, The Ohio State University. Accessed December 14, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1237600537.

MLA Handbook (7^th Edition):

Bautista, Dianne Carrol Tan. “A Sequential Design for Approximating the Pareto Front using the Expected Pareto Improvement Function.” 2009. Web. 14 Dec 2019.

Vancouver:

Bautista DCT. A Sequential Design for Approximating the Pareto Front using the Expected Pareto Improvement Function. [Internet] [Doctoral dissertation]. The Ohio State University; 2009. [cited 2019 Dec 14]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1237600537.

Council of Science Editors:

Bautista DCT. A Sequential Design for Approximating the Pareto Front using the Expected Pareto Improvement Function. [Doctoral Dissertation]. The Ohio State University; 2009. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1237600537

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