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Dissertations / Theses on the topic 'Control technologies'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Qazi, Hasham Ud Din. "Comparative Study of Network Access Control Technologies." Thesis, Linköping University, Department of Computer and Information Science, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-8971.

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<p>This thesis presents a comparative study of four Network Access Control (NAC) technologies; Trusted Network Connect by the Trusted Computing group, Juniper Networks, Inc.’s Unified Access Control, Microsoft Corp.’s Network Access Protection, and Cisco Systems Inc.’s Network Admission Control. NAC is a vision, which utilizes existing solutions and new technologies to provide assurance that any device connecting to a network policy domain is authenticated and is subject to the network’s policy enforcement. Non-compliant devices are isolated until they have been brought back to a complaint sta

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2

Childs, Simon. "Active control technologies for tilt-rotor aircraft." Thesis, University of Liverpool, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.442759.

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3

Nelson, Derrick. "Control theory why pollution control technologies have failed to keep pace /." CONNECT TO ELECTRONIC THESIS, 2008. http://hdl.handle.net/1961/6202.

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4

Wright, S. "New police technologies and sub-state conflict control." Thesis, Lancaster University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383486.

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5

Wright, Arnold David. "Effective Temperature Control for Industrial Friction Stir Technologies." BYU ScholarsArchive, 2021. https://scholarsarchive.byu.edu/etd/9134.

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Systematic investigation of the Friction Stir Welding (FSW) process shows that a fixed rotational velocity and feed rate may not yield uniform mechanical properties along the length of a weldment. Nevertheless, correlations between process parameters and post-weld material properties have successfully demonstrated that peak temperature and cooling rate drive post-weld properties. There have been many reported methodologies for controlling friction stir welding, with varying degrees of cost to implement and effectiveness. However, comparing data from uncontrolled FSW of AA 6111-T4 sheet with

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6

Md-Yusof, Hazlina. "Technologies and control strategies for active railway suspension actuators." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/11744.

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Future railway trends require travelling at high speeds without deterioration in the ride quality, but further improvement of the ride quality by optimisation of the passive suspension components has reached its limits. This suggests that active suspensions should be used. Rigorous studies over the past four decades have shown that this technique is able to overcome the passive suspension limitation in terms of improving the overall ride performance of the railway vehicle with the incorporation of additional active elements i.e. actuators, sensors and processors. The work in this thesis invest

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7

Scheff, Deanna Sue. "Packaging technologies for the control of stored-product insects." Diss., Kansas State University, 2016. http://hdl.handle.net/2097/32629.

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Doctor of Philosophy<br>Department of Grain Science and Industry<br>Subramanyam Bhadriraju<br>Hulya Dogan<br>Larvae of the Indian meal moth, Plodia interpunctella (Hübner), have the ability to invade or penetrate packaging materials and infest the food within. Energy bars with three polypropylene packaging types were challenged with eggs (for first instars), third, and fifth instars of P. interpunctella to determine package resistance to larvae at 28°C and 65% r.h. to determine which provided the greatest protection against P. interpunctella larval penetration. Third and fifth instars showed

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Björklund, Andreas, and Viktor Ljunggren. "Förbättring av ritningshantering hos ABB Industrial Automation Control Technologies." Thesis, Uppsala universitet, Industriell teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-360117.

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Cost of poor quality describes what the lack of quality costs an organization. By understanding what the concept is and how it can be translated into a specific organization, it creates the conditions for eliminating them, and it can generate a saving of up to 30% of the organization's turnover. The study has been carried out at ABB Industrial Automation Control Technologies in Västerås within the group ABB AB. This work has focused on visualizing the problem and how it could be attacked. The purpose of the thesis is, "… to generate evidence about the management of drawings, as well as to prop

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9

Xu, Hao. "Runtime Leakage Control in Deep Sub-micron CMOS Technologies." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1289235760.

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10

GIANOGLIO, BERNARDI MARCO. "In Cylinder NOx Control Technologies for Marine Diesel Engines." Doctoral thesis, Politecnico di Torino, 2012. http://hdl.handle.net/11583/2497417.

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In this work different internal and external EGR strategies, combined with extreme Miller cycles, were analyzed by means of a one dimensional CFD simulation code for a Wartsila 6 cylinder, 4 strokes, medium speed marine diesel engine, to evaluate their potential in order to reach the IMO Tier 3 NOx emissions target. By means of extreme Miller cycles, with Early Intake Valve Closures (EIVC up to 100 crank angle degrees before BDC), a shorter compression stroke and lower charge temperatures inside the cylinder can be achieved and thanks to the cooler combustion process, the NOx specific emissio

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11

Remark, Brian Joseph. "Analysis of advanced control algorithms and studies on sensor technologies for emulsion polymerization control /." Licensed for access by UF students, faculty, and staff (and others in a UF library), 2004. http://wwwlib.umi.com/cr/ufl/fullcit?p3135212.

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12

Chen, Wei-Bin. "Optimal allocation of stormwater pollution control technologies in a watershed." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1158464967.

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13

Lazenby, Lynn Anne. "Evaluation of selected new technologies for animal waste pollution control." Texas A&M University, 2006. http://hdl.handle.net/1969.1/4449.

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In 1998, two upper North Bosque River segments were designated as impaired due to the nonpoint source (NPS) pollution of phosphorus (P) to these segments in the watershed. As a result, two Total Maximum Daily Loads (TMDLs) were applied which called for the reduction of annual loading and annual average soluble reactive P (Sol P) concentrations by 50 %. This study was conducted to evaluate the efficacy of two prospective new technologies, an Electrocoagulation (EC) system, and a GeotubeÃÂ® dewatering system to potentially aid the dairy farmers in meeting the goals set by the TMDLs. The EC syst

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14

Javaid, Saboor. "Development and optimisation of treatment technologies for environmental pollution control." Thesis, Brunel University, 2006. http://bura.brunel.ac.uk/handle/2438/5403.

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A number of sustainable and economically viable treatment methodologies have been developed and optimised to combat environmental pollution problems associated with the diversity and scattered nature of industries in Pakistan. The use of both electro-precipitation and electro-oxidation processes are shown to lead to the removal of dyes from textile effluent streams originating from various operations. The use of the electro-precipitation process, however, leads to a secondary disposal problem because sludge produced has to be disposed of safely. The use of an electrooxidation process does not

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15

Turner, Paul. "Neural networks & associated technologies for control of chemical processes." Thesis, University of Newcastle Upon Tyne, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360239.

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Chen, Wei-Bin B. "Optimal allocation of stormwater pollution control technologies in a watershed." The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1158464967.

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17

Oats, Trey D., and Matthew C. Erickson. "The impact of new technologies on shipboard command and control." Thesis, Monterey, California. Naval Postgraduate School, 2003. http://hdl.handle.net/10945/995.

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Approved for public release, distribution is unlimited<br>An investigation of how fuel cells, an integrated power system, and directed energy weapons will affect the shipboard command and control process. The focus is on the implementation of the new technologies onboard near-term and far-term destroyer variants and the resulting changes to the command and control process.<br>Ensign, United States Naval Reserve

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18

Bottomley, M. "Optimisation of robust active flow control technologies for motorsport applications." Thesis, University of Surrey, 2015. http://epubs.surrey.ac.uk/809435/.

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Active flow control systems have the potential to allow future designs of ground vehicles and aircraft to realise increased operational efficiency through improved optimisation of the flow, leading to decreased fuel use and reduced environmental impact. To achieve this, dynamic actuators are required that can adapt to the changing conditions experienced over low-speed, high-lift aerofoils where separation control can be particularly advantageous. Synthetic Jet Actuators (SJAs) are a form of the technology that shows promise; they are small, low-mass and low-power devices, which means that they

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Erickson, Matthew C. Oats Trey D. "The impact of new technologies on shipboard command and control /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Jun%5FErickson.pdf.

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Ortiz, Pérez Alvaro [Verfasser]. "Smart Technologies for Indoor Environmental Quality Control / Alvaro Ortiz Pérez." Düren : Shaker, 2019. http://d-nb.info/1205239553/34.

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Walgern, Julia. "Impact of Wind Farm Control Technologies on Wind Turbine Reliability." Thesis, Uppsala universitet, Elektricitetslära, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-388333.

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Cost efficient operation and maintenance strategies are crucial for reducing cost of wind energy. Since the regime change from feed-in tariffs to an auction-based bidding system for capacity in most European wind projects, levelized cost of energy is challenged constantly. Therefore, new technologies such as new controllers are developed to improve operation and to increase profit. Previous research studies demonstrated the advantage of increased power output of wake redirection control. However, understanding and quantifying the impact of wind farm control technologies on operation and mainte

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22

Bortolini, Marco. "Design, control and management of renewable energy plants and technologies." Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3422587.

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Nowadays, and even more in the next decades, the availability and easy-access to energy sources represent a crucial asset for the world development and the progress of people and nations. At the same time, the depletion of natural resources, together with the increase of the anthropic activity impact on the Earth ecosystem and climate, force communities and institutions, at all levels, to discuss and actuate different approaches to achieve the social and economic growth, based on the so-called sustainable development pattern. In such a scenario, renewable energy sources, i.e. solar, wind, hydr

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23

Božić, Nikola. "Blockchain technologies and their application to secure virtualized infrastructure control." Electronic Thesis or Diss., Sorbonne université, 2019. http://www.theses.fr/2019SORUS596.

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Blockchain est une technologie qui fait du concept de registre partagé à partir de systèmes distribués une réalité pour un certain nombre de domaines d’application, du crypto-monnaie à potentiellement tout système industriel nécessitant une prise de décision décentralisée, robuste, fiable et automatisée dans une situation à plusieurs parties prenantes. Néanmoins, les avantages réels de l’utilisation de la blockchain au lieu de toute autre solution traditionnelle (telle que des bases de données centralisées) ne sont pas complètement compris à ce jour, ni quel type de blockchain répond le mieux

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Chrétien-Ciampi, Claire. "Influence des usages des technologies de l'information sur les assemblages de contrôle." Thesis, Paris 9, 2015. http://www.theses.fr/2015PA090037/document.

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Cette thèse analyse les usages des technologies de l’information dans les organisations et leur influence sur les assemblages de contrôles. Un modèle d’analyse structurationniste des conséquences des usages des technologies fait l’objet d’une adaptation aux assemblages de contrôles. Ce modèle est mobilisé sur un cas d’appropriation d’une technologie de base de données collaborative. Cette étude comprend une phase préliminaire de 34 entretiens. 44 autres entretiens et 14 journées d’observation sont réalisés pour étudier un processus d’appropriation de sept années. La thèse montre que les usages

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Ashley, Paul. "Security technologies for intranet computing." Thesis, Queensland University of Technology, 1999.

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26

Davis, R. A. "The dynamics and control of a remotely piloted plan-symmetric helicopter." Thesis, Aston University, 1986. http://publications.aston.ac.uk/15131/.

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Prior to the development of a production standard control system for ML Aviation's plan-symmetric remotely piloted helicopter system, SPRITE, optimum solutions to technical requirements had yet to be found for some aspects of the work. This thesis describes an industrial project where solutions to real problems have been provided within strict timescale constraints. Use has been made of published material wherever appropriate, new solutions have been contributed where none existed previously. A lack of clearly defined user requirements from potential Remotely Piloted Air Vehicle (RPAV) system

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27

Jung, Jae Sung. "Development and Deployment of Renewable and Sustainable Energy Technologies." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/56621.

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Solar and wind generation are one of the most rapidly growing renewable energy sources, and is regarded as an appealing alternative to conventional power generated from fossil fuel. This is leading to significant levels of distributed renewable generation being installed on distribution circuits. Although renewable generation brings many advantages, circuit problems are created due to its intermittency, and overcoming these problems is a key challenge to achieving high penetration. It is necessary for utilities to understand the impacts of Photovoltaic (PV) generation on distribution circuits

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Molchanova, K. M., D. A. Soloviova, К. М. Молчанова, and Д. А. Соловйова. "Biometric technologies at airports." Thesis, Національний авіаційний університет, 2022. https://er.nau.edu.ua/handle/NAU/54801.

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An overview of modern biometric technologies implemented in airports around the world. Determination of advantages and disadvantages of using human biometric data for border control. Comparison of service quality before and after the introduction of biometrics. Identification of risks and security guarantees.<br>Огляд сучасних біометричних технологій, впроваджених в аеропортах по всьому світу. Визначення переваг та недоліків використання біометричних даних людини для прикордонного контролю. Порівняння якості послуг до та після впровадження біометричних даних. Визначення ризиків і гарантії безп

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Li, Hongyi. "Robust control design for vehicle active suspension systems with uncertainty." Thesis, University of Portsmouth, 2012. https://researchportal.port.ac.uk/portal/en/theses/robust-control-design-for-vehicle-active-suspension-systems-with-uncertainty(5f7f911c-288e-4868-b82b-154598d5b6d8).html.

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A vehicle active suspension system, in comparison with its counterparts, plays a crucial role in adequately guarantee the stability of the vehicle and improve the suspension performances. With a full understanding of the state of the art in vehicle control systems, this thesis identifies key issues in robust control design for active suspension systems with uncertainty, contributes to enhance the suspension performances via handling tradeoffs between ride comfort, road holding and suspension deflection. Priority of this thesis is to emphasize the contributions in handing actuator-related chall

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Pisano, Filippo. "Advanced technologies for spatio-temporal control of neural circuits using optogenetics." Thesis, University of Strathclyde, 2016. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27899.

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The progress of neuroscientific research is linked to the development of technologies able to interface with the complexity of neural circuitry. Remarkable advances in this direction have been achieved in the past decades and it is now possible to optically control the neural activity of genetically targeted cells with techniques known as optogenetic stimulation. The combination of optogenetic stimulation methods with electrophysiological recordings and advanced optical imaging is leading to promising approaches aiming at obtaining information on spiking activity, morphology and genetic identi

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Toyama, Miyagusuku Jorge, and La Rosa Juan Carlos Girao. "Labour GPS: The Employer’s Right of Control regarding New Information Technologies." IUS ET VERITAS, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/123176.

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The authors analyze the exercise of the power of controlregarding new technologies of information. Particularly, the use of GPs Tracking as a tool that the employer relies on to verify that workers fulfill their work. Firstly, the authors explain how these technologies are used at workplaces and their lack of regulation in Peruvian Law. Then, they explain the conditions necessary for not violating the workers’fundamental rights when using this tool. Finally, they discuss the case law and precedents, as well as cases seen by theNational Labour Authority.<br>Los autores analizan el ejercicio de

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Shi, Danni. "Robustness Issues of Run-time Leakage Control in Nano-scale Technologies." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1282054251.

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33

Earnesty, Lisa H. "Evaluation of detection technologies for use in traffic management and control." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-11182008-063604/.

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34

Flugaur, Nicholas J. "Wastewater effluent treatments and control technologies in the beef processing industry." Online version, 2003. http://www.uwstout.edu/lib/thesis/2003/2003flugaurn.pdf.

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35

Tinello, Federica. "Innovative technologies and bioactive compounds for the control of polyphenol oxidase." Doctoral thesis, Università degli studi di Padova, 2016. http://hdl.handle.net/11577/3424449.

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The enzymatic browning and melanogenesis are associated respectively with the most of qualitative and economical losses during post-harvest processing in agro-food industry and human skin disorders in cosmetic field. The main responsible is tyrosinase or polyphenol oxidase (PPO, EC 1.14.18.1), a copper-containing oxidoreductase that catalyses two different enzymatic reactions involving polyphenolic substrates and oxygen and producing dark pigments. Recently, the research of new eco-friendly systems for controlling PPO activity is focused on innovative non-thermal technologies and bioactive c

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36

Chu, Chuan-Pin. "Taiwan : media control , new communications technologies and people's national and cultural identities." Thesis, Goldsmiths College (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244655.

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37

Hamilton, Ross. "Continuous path : the evolution of process control technologies in post-war Britain." Thesis, University of Warwick, 1997. http://wrap.warwick.ac.uk/3497/.

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Automation - the alliance of a series of advances in manufacturing technology with the academic discipline of cybernetics - was the centre of both popular and technical debate for a number of years in the mid-1950s. Alarmists predicted social disruption, economic hardship, and a massive de-skilling of the workforce; while technological positivists saw automation as an enabling technology that would introduce a new age of prosperity. At the same time as this debate was taking place, increasingly sophisticated control technologies based on digital electronics and the principle of feedback contro

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Penney, John 1974. "Managing the implementation of automotive emission control technologies using systems engineering principles." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/34737.

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Thesis (S.M.)--Massachusetts Institute of Technology, System Design & Management Program, 2004.<br>Includes bibliographical references (p. 79-80).<br>In the 1940s and 1950s poor air quality in major metropolitan areas throughout the United States started to negatively influence the health of citizens throughout the country. After numerous studies the government concluded that mobile sources of air pollution were a significant contributor to the deteriorating air quality. From that point onwards, the automobile manufacturers have been forced to comply with ever tightening emission regulations.

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Adedeji, Adaku Edith. "Fresh Food Products Inventory Control Management : the challenges in avoiding perishability at the retailers' shelf." Thesis, Linnéuniversitetet, Institutionen för ekonomistyrning och logistik (ELO), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-96173.

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Purpose This study focuses on applicable methods used in the Inventory Management of Fresh Food Products and challenges encountered in their implementation. The area of concentration is the Fresh Food Retailers. Secondly, the challenges encountered in the implementation of fresh food products is also addressed. Methodology The study employs a qualitative research technique with the use of a semi-structured interview for five companies to gather data. Theory The theory section of this study first gives a brief explanation of fresh food retailers’. Secondly, it addresses the keywords of the rese

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Zhang, Guobin. "Performance of reduced-scale vortex amplifiers used to control glovebox dust." Thesis, University of Central Lancashire, 2005. http://clok.uclan.ac.uk/20086/.

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Ventilation systems for a nuclear plant must have a very high reliability and effectiveness. In this application, fluidic devices have advantages which electro-mechanical and pneumatic devices lack. Fluidic devices will not easily wear out, they have a relatively fast response and in some cases they may be cheaper than an equivalent conventional device. Most importantly, they have fewer moving parts (usually none) so are inherently reliable, so long as the fluidic design is effective. So vortex amplifiers (VXA) are ideal for active ventilation systems where access for maintenance is problemati

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Schultz, Lance Craig. "Investigating the impact of supply chain technologies within automative supplier clusters." Thesis, Nelson Mandela Metropolitan University, 2013. http://hdl.handle.net/10948/d1021093.

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Organisations are constantly expected to be more competitive while working in an environment in which time and cost are limited, thereby preventing such organisations from taking the time required to be responsive. The supply chain provides a critical linkage between various organisations which should seek collective opportunities to improve performance. It is, therefore, important that organisations understand that conventional knowledge and methods will not serve unless there is a concerted focus on improvement of organisational performance toward fulfilling increased expectations, not just

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Hansen, Brigham Wheeler. "Smart Technologies for Oil Production with Rod Pumping." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/6936.

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This work enables accelerated fluid recovery in oil and gas reservoirs by automatically controlling fluid height and bottomhole pressure in wells. Several literature studies show significant increase in recovered oil by determining a target bottomhole pressure but rarely consider how to control to that value. This work enables those benefits by maintaining bottomhole pressure or fluid height. Moving Horizon Estimation (MHE) determines uncertain well parameters using only common surface measurements. A Model Predictive Controller (MPC) adjusts the stroking speed of a sucker rod pump to maintain

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Mahzoon, Alireza. "Manipulated Private and Public Spheres : The Use of Control Technologies by Totalitarian Regimes." Thesis, Blekinge Tekniska Högskola, Sektionen för planering och mediedesign, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-4344.

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In my paper, I explore how totalitarian regimes use technology to break the borders between the private and public spheres, through the study of two fictional works. Reflecting how real regimes operate, these fictional totalitarian regimes apply technology to extend the sphere of public authority. Exploring the idea, I am going to compare two totalitarian regimes in different periods of time. The first one is the Republic of Gieald, which is depicted in The Handmaid’s Tale 1985 by Margaret Atwood, and the second one is the society presented in the movie The Island, directed by Michael Bay. By

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Van, Greunen Larey-Marié. "Selection of air pollution control technologies for power plants, gasification and refining processes." Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-04112007-111900.

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MARTINS, LUIZ ALBERTO MOREIRA. "FROM DISCIPLINE TO CONTROL: SECURITY TECHNOLOGIES, POPULATION AND MODES OF SUBJECTIFICATION IN FOUCAULT." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=11016@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>FUNDAÇÃO DE APOIO À PESQUISA DO ESTADO DO RIO DE JANEIRO<br>Partindo do pressuposto de que os processos de subjetivação são efeitos de tecnologias e de práticas de poder, em constante transformação, procuramos investigar a emergência e a instauração das tecnologias de segurança, que caracterizam a sociedade de controle. Os processos de subjetivação têm estreita relação com os complexos saber/poder, dos quais derivam, ao mesmo tempo que os produzem. Há, assim, uma relação de implicação recíproca entre saber e poder. Nesta dis

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Ferguson, Philip Andrew 1976. "Distributed estimation and control technologies for formation flying spacecraft by Philip Andrew Ferguson." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/82763.

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London, Adam Pollok. "A systems study of propulsion technologies for orbit and attitude control of microspacecraft." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10989.

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Meredith, Hazel. "Technologies and systems to control Campylobacter and reduce the microflora on poultry products." Thesis, Ulster University, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.669230.

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Campylobacter is the most frequent cause of bacterial gastroenteritis in Ireland and the EU. In Ireland, over 98% of broilers are contaminated with Campylobacter. The objectives of this study were to investigate (I) the efficiency of slaughtering plant level cloacal treatments as a Campylobacter control technology; (2) the impact of dipping/spraying treatments in reducing Campylobacter on fresh and stored poultry carcasses, and to assess related sensory effects; (3) the impact of available chemicals, and application methods on the natural microflora of poultry carcasses; (4) the impact of 7 mo

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Serna-Maza, Alba. "Nitrogen control in source segregated domestic food waste anaerobic digestion using stripping technologies." Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/372768/.

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Anaerobic digestion of source segregated domestic food waste (SS-DFW) offers a sustainable management route for reclaiming potential energy in the form of a fuel gas, and nutrients which can be recycled back to land. However, the biochemical characteristics of SS-DFW can lead to free ammonia nitrogen (FAN) concentrations that are inhibitory to the digestion process causing unstable operation and in some cases complete process failure, particularly in thermophilic systems. With the purpose of reducing the total ammoniacal nitrogen (TAN) in the digester, side-stream and in situ biogas stripping

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Gabagnou, Catherine, Jens Fennen, and Daniel Herta. "Modern unhairing technologies for effective control of H2S release from Beamhouse operations - 55." Verein für Gerberei-Chemie und -Technik e. V, 2019. https://slub.qucosa.de/id/qucosa%3A34335.

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Abstract:

Content: The toxicity and unpleasant smell of hydrogen sulphide (H2S) gas is an issue for the leather industry that has been contained rather than eliminated in tannery practice. Completely eliminating H2S from tanneries while maintaining practical and economically feasible processing is still a big challenge to be addressed. Significant progress has, though, been made by introducing robust and reliable low sulphide unhairing systems based on selective soaking and specific enzymatic liming auxiliaries. These systems allow the reduction of sodium sulphide offers from the typical 2.5% to 1% of p

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