Dissertations / Theses on the topic 'Flow aid'
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Shabbir, Muhammad Humas. "Streamlining information and part flow by re-designing process flow to aid root cause analysis." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/113727.
Full textThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (page 63).
Waters Corporation is a world leading analytical instrument manufacturing company, with an overarching goal of achieving and maintaining high product robustness. Analysis of the challenge identifies the problem of lack of root cause analysis. This is further attributed to the inefficient process flow of information and parts: there is a lack of tracking mechanism for parts which is induced from lack of ownership and value at each stage of the root cause analysis phase. A new process flow is designed around the current process to address gaps and inefficiencies. This process flow redesign is done for both information flow for hot parts list and the movement of parts; this will streamline the overall root cause process and secondarily help save cost and eliminate redundancies. A layout improvement solution is developed, and a plan for implementation recommended. The new process flow is designed to increase visual control of the process and to effectively move the material. Each phase of the project has been reviewed and discussed to encourage stakeholder involvement in order to develop a continuous improvement culture.
by Muhammad Humas Shabbir.
M. Eng.
Houston, Jonas H. "Developing Dendrifrom Facades Using Flow Nets as a Design Aid." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/670.
Full textÅkesson, Anna. "Hydraulic- hydromorphologic analysis as an aid for improving peak flow predictions." Licentiate thesis, KTH, Vattendragsteknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-25425.
Full textQC 20101022
Miller, Adin T. "Walking Assistant - A Mobile Aid for the Visually-Impaired." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1262.
Full textBuys, Angela. "Development of a flow cytometric bead immunoassay as an aid to potency evaluation of enterotoxaemia vaccines." Diss., University of Pretoria, 2012. http://hdl.handle.net/2263/30924.
Full textDissertation (MSc)--University of Pretoria, 2012.
Microbiology and Plant Pathology
MSc
Unrestricted
Gezimati, Robinson. "Good governance as key to the flow of foreign development aid: the sub-Saharan Africa perspective." Thesis, University Of Cape Town, 2018. http://hdl.handle.net/11427/29947.
Full textSvedberg, Anna. "Improvement of the retention-fromation relationship using three-component retention aid systems." Doctoral thesis, KTH, Fiberteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-96259.
Full textWeseman, Brian D. "The Effects of Retention Aid Dosage and Mechanical Energy Dissipation on Fiber Flocculation in a Flow Channel." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/7960.
Full textEliasson, Åse. "Groundwater impact assessment and protection." Licentiate thesis, KTH, Civil and Environmental Engineering, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1234.
Full textIn the recent decades, therehave been frequent conflicts between groundwater waterresources and environmentally hazardous activities. Newmethodologies for aiding decision-making in groundwater impactassessment and protection areneeded and in which issues ofincreased awareness, better understanding of the groundwaterresources processes, and validation of predictive mathematicalmodels are addressed.
A framework fordecisionaid, based on predictive simulations that a)predicts the environmental impacts b) provides the totaleconomical value c) visualises the impacts and the groundwaterproperties and d) describes the uncertainties in the results isproposed herein. The framework can be applied in environmentalimpact assessments, strategic environmental assessments andprotection and management of water resources. The results ofthe model are used as feedback for determining new scenarios,depending on the required uncertainties, and if the plannedactivity is sustainable, and/or fulfils the legislative andpolicy measures. This framework is applied to a particular casestudy, Nybroåsen, in the south-eastern part of Sweden,where the highway E22 is constructed through the importantglaciofluvial esker aquifer, passing the protection zone of thewater supply for the Kalmar municipality.
The impacts from the new highwayand the existing road have been predicted by two-dimensionalphysically based time-variant flow and solute groundwatermodelling. The results, breakthrough curves of contaminantconcentration in wells and maps of concentration distributions,as well as travel times, flow paths, and capture zones forwells determined by particle tracking have been presented.
The constructed model of theNybroåsen study area was calibrated by comparing observedand simulated groundwater levels for 15 observation wells forten years of measurements. The model has been evaluated bothgraphically and numerically and the calibration target wasfulfilled for 13 of the 15 observation wells. The model workincludes investigations of the catchment information, a waterbalance study, simulation of the groundwater recharge,consideration of the unsaturated zone by a numerical columnsimulation, and sensitivity analysis.
From the sensitivity analysis ofthe flow and transport parameters, it has been shown that theuncertainties are mainly due to the hydraulic conductivity.Comparison of the derived conductivity from the steady-stateautomatic calibration and the time-variant calibration showedthat there are major differences in the derived parameters,which illustrates the importance of a time dependentcalibration over both wet and dry periods and in more than onepoint in the area of interest of the model predictions.
In addition, a multi-criteriadecision analysis has been carried out for four roadalternatives (including the new highway E22) and the existingroad in the case study concerned. The multi-criteria decisionaid is applied as an illustration of how it can be used in thestudy area to identify a) interest groups of actors and theirconcerns b) ranking of alternative road scenarios according toactorspreferences and c) coalition groups of actorsi.e.groups that have similar views with regard to theroad alternatives.
Keywords:Physically-based groundwater modelling,contamination, flow and solute transport, glaciofluvialdeposits, Nybroåsen, Sweden, and multi-criteriadecision-aid.
Miclo, Romain. "Challenging the "Demand Driven MRP" Promises : a Discrete Event Simulation Approach." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2016. http://www.theses.fr/2016EMAC0016/document.
Full textThe main Supply Chain current issues concern the adaptation to unstable environments. Demand Driven Material Requirements Planning (DDMRP) is a recent and promising material management method that is designed to tackle these current issues. The research work details and classifies DDMRP compared to the other material management methods known. The goal of this work is to challenge the main DDMRP promises. This is why a design of experiments was realised on a case study in order to assess MRP II, Kanban and DDMRP behaviours with different variability sources. The DDMRP buffer sizing is a major issue. It was dealt with an optimisation work on a case study. All the contributions were experimented with a DDMRP implementation on a real case. The research work enables several DDMRP advantages to be validated, such as the system adjustment to different variability sources, however this work also allows research perspectives to be underlined
Al-Shaghdari, Mohammed A. "The evaluation of time-dependent flow in swirl burners." Thesis, University of South Wales, 1997. https://pure.southwales.ac.uk/en/studentthesis/the-evaluation-of-timedependent-flow-in-swirl-burners(e2caff50-bfda-4bc9-85f4-e91182d53bd7).html.
Full textJohnson, Christopher Gurney. "Granular shocks, particle size segregation and levee formation in avalanches and debris flows." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/granular-shocks-particle-size-segregation-and-levee-formation-in-avalanches-and-debris-flows(a90bcaa3-a056-4691-bc8d-de7b484e2590).html.
Full textWeston, Neil Philip. "A heat flow and vent sizing calorimeter for a complete chemical reaction hazards assessment." Thesis, London South Bank University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388167.
Full textLi, Jie Sheng. "The political economy of foreign aid flows." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6735/.
Full textPečeňa, Lukáš. "Projekt výstavba pečovatelského domu." Master's thesis, Vysoká škola ekonomická v Praze, 2012. http://www.nusl.cz/ntk/nusl-194519.
Full textHeinemeier and Nicholas Pierce. "Flow speed measurement using two-point collective light scattering." Thesis, Risoe National Laboratory, 1998. http://www.risoe.dk/rispubl/ofd/riso-r-1064.htm.
Full textKhaire, Swapnil S. "Influence of test section entrance conditions on straight flat oval apparent relative roughness a thesis presented to the faculty of the Graduate School, Tennessee Technological University /." Click to access online, 2009. http://proquest.umi.com/pqdweb?index=0&did=2000385011&SrchMode=1&sid=1&Fmt=6&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1277822700&clientId=28564.
Full textBesarla, Dhaman Kumar. "Modeling and optimization of air flow in a cabin air filtration test duct a thesis presented to the faculty of the Graduate School, Tennessee Technological University /." Click to access online, 2008. http://proquest.umi.com/pqdweb?index=0&did=1679682361&SrchMode=1&sid=2&Fmt=6&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1254155722&clientId=28564.
Full textRossi, D. "Adipic acid sonocrystallization in continuous flow microchannels." Thesis, University College London (University of London), 2017. http://discovery.ucl.ac.uk/1557884/.
Full textZhou, Jing. "Flow Patterns in Vertical Air/Water Flow With and Without Surfactant." University of Dayton / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1375455656.
Full textRicardo, Duarte Jorge Portela. "Oil, foreign aid and FDI flows: The missing link?" Master's thesis, NSBE - UNL, 2013. http://hdl.handle.net/10362/9770.
Full textThis paper studies the possible strategic use of foreign aid to get preferential access to oil. Furthermore, it also addresses the role of oil as a determinant factor for the allocation of Foreign Direct Investment (FDI). Using a panel data set of 48 oil producing countries for a period of 30 years, ranging from 1980 to 2010, it was found that, not only is oil a key factor for the determination of foreign aid and FDI, but also that there is a clear distinction between the importance conceived by donor and/or investing countries in their current and future level of oil dependence.
Schudel, Carl Jan Willem. "Corruption and International Capital Flows to Developing Countries : Bilateral Aid, Multilateral Aid, and Foreign Direct Investment." Thesis, University of Essex, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.517489.
Full textKadja, M. "Computation of recirculating flow in complex domains with algebraic Reynolds stress closure and body fitted meshes." Thesis, University of Manchester, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384419.
Full textBalasubramanian, Vivek. "Effectiveness of the "common" method in balancing exhaust ventilation systems." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4354.
Full textTitle from document title page. Document formatted into pages; contains vii, 59 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 48-49).
Tsui, Ka-cheung. "Neighborhood ventilation of a building cluster by combined forces." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B42182128.
Full textAhn, Seungki. "An experimental study of flow over a 6 to 1 prolate spheroid at incidence." Diss., This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-06062008-165846/.
Full textTalbot, Michael T. "Pressure and velocity distribution for air flow through fruits packed in shipping containers using porous media flow analysis." Gainesville, FL, 1987. http://www.archive.org/details/pressurevelocity00talb.
Full textRobinson, Robert James. "An expert system to aid ultrasonic flaw modelling results interpretation." Thesis, University of Strathclyde, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.428856.
Full textGuo, Haipeng, and 郭海朋. "Groundwater movement and subsurface air flow induced by land reclamation and tidal fluctuation in coastal aquifers." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40987735.
Full textGuo, Haipeng. "Groundwater movement and subsurface air flow induced by land reclamation and tidal fluctuation in coastal aquifers." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B40987735.
Full textChen, Lejun. "Flow patterns in upward two-phase flow in small diameter tubes." Thesis, Brunel University, 2006. http://bura.brunel.ac.uk/handle/2438/5104.
Full textPhillips, Andrew. "Two phase flow in rapidly rotating porous media." Thesis, University of Nottingham, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289324.
Full textJangam, Ranjit. "Relationship between damper resistance and damper insertion depth." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4509.
Full textTitle from document title page. Document formatted into pages; contains xi, 97 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 62-63).
Judy, Christopher Daniel Shon Paul. "Evaluating the effects of elbows and duct size on the accuracy of hand-held pitot traverse flow measurements." Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5479.
Full textTitle from document title page. Document formatted into pages; contains v, 44 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 39-40).
Jalali, Amirjalal. "Quiescent and flow-induced crystallization of poly(lactic acid)." Thèse, Université de Sherbrooke, 2017. http://hdl.handle.net/11143/9892.
Full textAbstract : Poly(lactic acid), PLA, is a biocompatible and biodegradable polymer that can be produced from renewable resources. As a result, it has raised particular attention as a potential replacement for petroleum-based polymers. It is an aliphatic polyester with properties such as high modulus, high strength, and biocompatibility and is thus a promising material for various applications such as implants, drug encapsulation, and packaging. In the wake of low glass transition temperature, PLA has a low heat resistance and its application is limited to those not associated with high temperatures. In addition, this polymer suffers from a low degree of crystalinity. Increasing the crystallization rate in many processing operations, such as injection molding, is required. So far, many routes have been found to improve the crystallinity of PLA. These methods include using nucleating agents, plasticizers, and combination of nucleating agents and plasticizers together. PLA crystallization in the melt state results in two slightly different crystalline forms known as α and α’forms. This thesis compares the self-nucleation ability of these two crystal forms by self-nucleation. This is achieved by comparing crystallization temperatures upon cooling for samples previously crystallized at various temperatures and then re-heated to a temperature in the partial melting range for PLA. In the second step, we study the effect of molecular weight of PLA on the nucleation efficiency of PLA crystalline phases. This part of the investigation opens a new pathway to understand the role of PLA crystalline phases on the optimal condition for its crystallization kinetics. Polymer processing operations involve mixed shear and elongational flows and cause polymer molecules to experience flow-induced crystallization during flow and subsequent solidification. The mechanical properties of the final products are significantly dependent upon the degree of crystallization and types of formed crystals. Therefore, optimization of any polymer process requires a good understanding of how flow influences crystallization. The type of flow can play a significant role in affecting crystallization. For example, elongational flow causes molecules to orient and stretch in the direction of extension, as in the case of fiber spinning and film blowing, helping the process of flow-induced crystallization. An extensive body of literature exists on flow-induced crystallization of conventional thermoplastics. Having said that, less attention has been paid to the effect of shear and elongational flow on the PLA crystallization kinetics. As investigated in the final part of this thesis, the effect of iv molecular weight on the shear-induced crystallization of PLA is reported. For this, low, medium and high molecular-weight PLAs were prepared from a high molecular weight one by a hydrolysis reaction. Next, by means of a simple rotational rheometry, effect of the shear flow was examined on the crystallization kinetics of these three PLAs.
Lusardi, Marcella R. (Marcella Rose). "Acid-base catalysts for polycondensation of acetaldehyde in flow." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/101563.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (pages 71-74).
Acetaldehyde is used as a bio-oil model compound in a polycondensation reaction over two acid-base catalysts, pelletized Evonik P25 TiO₂ and an activated hydrotalcite-like compound (HTlc), to produce high molecular weight molecules in the transportation fuel range. The catalytic performance of these materials is evaluated in a gas phase, atmospheric flow system with a packed bed microreactor designed to mimic process conditions in one step of the overall bio-oil upgrading scheme. The HTlc is activated through calcination at 500 °C followed by rehydration in decarbonated H₂O, generating the active acid-base hydroxyl pairs. Materials are characterized through XRD, low temperature N₂ adsorption-desorption isotherm experiments, TGA, and XPS. In initial experiments, high conversions are achieved but all converted acetaldehyde forms carbonaceous deposits on the catalyst surfaces over a range of temperatures and residence times. When the catalyst bed is reduced by 80%, decreasing both residence time and vapor-solid contact area, high conversions are maintained and the production of liquid phase condensation products is observed on the order of seconds. While yields are low, it is promising that tuning the packed bed results in decreased deposits and generation of liquid phase products. Further adjustments of reaction parameters and catalyst activity are of interest as future work, including shorter residence times and bed lengths, co-feeding a reaction inhibitor, and specific catalyst syntheses for control over active sites.
by Marcella R. Lusardi.
S.M.
Tyagi, P. K. "Linear Instability Of Laterally Strained Constant Pressure Boundary Layer Flows." Thesis, Indian Institute of Science, 2001. http://hdl.handle.net/2005/265.
Full textSharp, Justin. "The structure and dynamics of Columbia Gorge gap flow revealed by high-resolution numerical modeling /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/10020.
Full textFresconi, Frank. "Flow patterns and convective dispersion in the conducting airways of the human lung." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 145 p, 2007. http://proquest.umi.com/pqdweb?did=1362534221&sid=10&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Full textMenon, Anilkumar S. "Flow dynamics in a model of the large airways." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=72009.
Full textOscillatory velocity profiles were compared with the steady velocity profiles at nearly identical Reynolds numbers. The flow in a branch was quasi-steady below a critical Strouhal number in agreement with an order of magnitude analysis. For quasi-steady oscillatory flows the velocity profile developed from an initially flat shape to the profiles characteristic of steady flow in branching tubes. Flows that were not quasi-steady exhibited relatively flat profiles over the entire respiratory cycle. The effects of tidal volume, frequency and the geometry of the airways on the velocity profiles were determined.
While the larynx produced a significant jet within the trachea it had no effect on the velocity profiles beyond the carina. The presence of a concentric endotracheal tube located halfway between the glottis and the carina had little effect on the velocity profiles in the main stem and the lobar bronchi. Inserting the tube further into the trachea altered the velocity profiles in the right upper lobar bronchus.
In oscillating flow the pressure was essentially uniform around the periphery of a branch in strong contrast to the results for steady flow. The pressure drop in oscillating flow was much larger than the pressure drop in steady flow at an equivalent flow rate. The functional form of the relationship between the pressure drop across the different branches of the model and the tracheal Reynolds number was similar to that suggested by earlier researchers, however the coefficients were very sensitive to the geometry of the model.
Beausoleil-Morrison, Ian David. "The adaptive coupling of heat and air flow modelling within dynamic whole-building simulation." Thesis, University of Strathclyde, 2000. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21137.
Full textKuang, Xingxing, and 匡星星. "Air and water flows induced by water level change in aquifers." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/196080.
Full textpublished_or_final_version
Earth Sciences
Doctoral
Doctor of Philosophy
Jouini, Dhafer Ben Mahmoud Carleton University Dissertation Engineering Mechanical. "Experimental investigation of the ventilation air flow properties in an office space." Ottawa, 1992.
Find full textSherwood, Julia Merryn. "Modelling minewater flow and quality changes after coalfield closure." Thesis, University of Newcastle Upon Tyne, 1997. http://hdl.handle.net/10443/314.
Full textLee, Wing-chi Steven. "Analytical study of wind flow and pollutant dispersion past hills /." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk:8888/cgi-bin/hkuto%5Ftoc%5Fpdf?B22752948.
Full textKing, Matthew James Stuart. "Experimental and modelling studies of transient slug flow." Thesis, Imperial College London, 1998. http://hdl.handle.net/10044/1/8270.
Full textMartins, Pedro Miguel Gaspar. "Essays on the macroeconomic management of foreign aid flows in Africa." Thesis, University of Sussex, 2010. http://sro.sussex.ac.uk/id/eprint/6286/.
Full textMorgen, Brian A. "Virginia Gravity Flow Winery: A Transformative Journey." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/83895.
Full textMaster of Architecture
Saxena, Gaurav. "Air flow separation over wind generated waves." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 235 p, 2007. http://proquest.umi.com/pqdweb?did=1251900711&sid=2&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Full textAssemi, Shoeleh 1963. "Use of flow field-flow fractionation for the characterisation of humic substances." Monash University, Dept. of Chemistry, 2000. http://arrow.monash.edu.au/hdl/1959.1/9028.
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