Дисертації з теми "Layered system"
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Sainani, Varsha. "Hybrid Layered Intrusion Detection System." Scholarly Repository, 2009. http://scholarlyrepository.miami.edu/oa_theses/44.
Повний текст джерелаGuastavino, Rémi. "Elastic and acoustic characterisation of porous layered system." Licentiate thesis, KTH, Aeronautical and Vehicle Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4047.
Повний текст джерелаFor an accurate prediction of the low and medium frequency surface vibration and sound radiation behaviour of porous layered systems, there is a need to improve the means of estimating their elastic and acoustic properties. The underlying reasons for this are many and of varying origin, one prominent being a poor knowledge of the geometric anisotropy of the cell microstructure in the manufactured porous materials. Another one being, the characteristic feature of such materials i.e. that their density, elasticity and dissipative properties are highly dependent upon the manufacturing process techniques and settings used. In the case of free form moulding, the geometry of the cells and the dimensions of the struts are influenced by the rise and injection flow directions and also by the effect of gravity, elongating the cells. In addition the influence of the boundaries of the mould also introduces variations in the properties of the foam block produced. Despite these complications, the need to predict and, in the end, optimise the acoustic performance of these materials, either as isolated components or as part of a multi-layer arrangement, is growing. It is driven by the increasing demands for an acoustic performance in balance with the costs, a focus which serves to increase the need for modelling their behaviour in general and the above mentioned, inherent, anisotropy in particular. The current work is focussing on the experimental part of the characterisation of the material properties which is needed in order to correctly represent the anisotropy in numerical simulation models. A hybrid approach based on a combination of experimental deformation and strain field mapping, and physically based porous material acoustic Finite Element (FE) simulation modelling, is under development which ultimately will provide the anisotropic elastic coefficients and acoustic properties of the porous layered system. The first step, involving new testing methods, is discussed here and demonstrated for a soft foam.
In addition investigations using laser vibrometers combined with finite element modelling of the Panphonics G1 multi-layered panel elements are also discussed. Variations in the mounting conditions, including globally acting restraints, are evaluated through dynamic measurements and acoustic interaction with the surrounding acoustic field. Results from investigations into different changes of the panel design parameters in order to improve the effectiveness in the low frequency range are presented.
Shousha, Christiane Wahba. "Applying layered queueing modelling to a telecommunication system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ36897.pdf.
Повний текст джерелаGuastavino, Rémi. "Elastic and acoustic characterisation of porous layered system /." Stockholm, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4047.
Повний текст джерелаTsuji, Yuichi. "Synthesis of π-System-Layered Structures Based on Rigid Scaffolds". 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/188608.
Повний текст джерелаRadde, Sven [Verfasser], and Burkhard [Akademischer Betreuer] Freitag. "A Layered Conversational Recommender System / Sven Radde. Betreuer: Burkhard Freitag." Passau : Universitätsbibliothek der Universität Passau, 2013. http://d-nb.info/1037243102/34.
Повний текст джерелаCalla, Chaitanya. "Two layered ballast system for improved performance of railway track." Thesis, Coventry University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402705.
Повний текст джерелаCai, Yi, and 蔡毅. "A virtual prototyping system with reconfigurable manipulators for layered manufacturing." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B47046144.
Повний текст джерелаZhou, Jianong. "Three-dimensional visualization of multi-layered graphs with application to communications." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27316.
Повний текст джерелаBrockmeier, Oivind. "Automated Loading and Unloading of the Stratasys FDM 1600 Rapid Prototyping System." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/31533.
Повний текст джерелаMaster of Science
Koch, Douglas J. "Positioning the Reserve Headquarters Support (RHS) system for multi-layered enterprise use." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Sep/09Sep%5FKoch.pdf.
Повний текст джерелаThesis Advisor(s): Cook, Glenn. "September 2009." Description based on title screen as viewed on 6 November 2009. Author(s) subject terms: Enterprise architecture, project management, business process transformation, operating model, IT governance, IT systems, data quality, data migration, business operating model, personnel IT systems, HRM, ERP. Includes bibliographical references (p. 89-92). Also available in print.
Ghosh, Kajari. "Characterizing fracture distribution in layered rocks using geographic information system-based techniques." FIU Digital Commons, 2003. https://digitalcommons.fiu.edu/etd/3932.
Повний текст джерелаLazar, Laura. "Fe/Pb layered system a detailed study of the "genuine" superconductor, ferromagnet priximity effect /." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=959850090.
Повний текст джерелаKnight, Thomas. "MARIA : a multi-layered unsupervised machine learning algorithm based on the vertebrate immune system." Thesis, University of Kent, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411943.
Повний текст джерелаGreen, Richard. "Use of a layered knowledge architecture to support multiple views of system development knowledge." Thesis, Keele University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242275.
Повний текст джерелаMatynowski, Eric D. "Groundwater Modeling and Hydrogeological Parameter Estimation: Potomac Aquifer System, SWIFT Research Center." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/99171.
Повний текст джерелаMaster of Science
The Sustainable Water Interactive for Tomorrow (SWIFT) project in eastern Virginia is a project designed to help slow the depletion of the Potomac Aquifer System due to unsustainable groundwater withdrawals. At the SWIFT Research Center (SWIFTRC) in Nansemond, VA, a testing well (TW-1) has been implemented to help determine if the full-scale implementation of the SWIFT project is feasible. The pumping data from TW-1 and observation head data from surrounding monitoring wells (MW) at the SWIFTRC were used to calculate hydrogeological parameters (transmissivity, hydraulic conductivity, specific storage, and storage coefficients). These parameters help describe the behavior of the aquifer system. Two sets of data were analyzed from before and after TW-1 was rehabilitated to account for the change in the flow distribution within TW-1. Comparing the results to past literature, the calculated (using analytical methods, Theis and Cooper-Jacob methods) hydraulic conductivity/transmissivity values are within the same order of magnitude. Using data from the boreholes, multiple single and multi-layered models for both the upper and middle Potomac aquifers were produced with MODFLOW, a groundwater modeling software. Estimating parameters using observation data within MODFLOW resulted in hydrogeological parameters similar to those calculated using the Theis and Cooper-Jacob methods. The change in the hydraulic conductivity and specific storage between the pre and post rehabilitation flow distributions within TW-1 is proportional to that change in the flow distribution. For future modeling of the aquifer system, the hydrogeological parameters from the model using the 4/26/19 (most recent) data set with the post rehabilitation (more current) flow distribution is recommended. Drawdown (decrease in the water table) results from a multi-layered MODFLOW model were compared to results using the Theis method using both the Theis-calculated and MODFLOW modeled hydrogeological parameters. The results were nearly identical except for the Upper Potomac Aquifer (UPA) layer 1, as the model has a large change in aquifer thickness with distance from TW-1 that the Theis-based calculations do not consider. The time it took for a particle of water to travel from the monitoring wells to TW-1 were calculated with the single and multi-layered models pumping 700 GPM from TW-1. Travel times from the SWIFT MW within the UPA sublayers ranged from 204 to 597 days depending on the sublayer, while travel times from the USGS MW within the UPA sublayers ranged from 2,395 to 7,859 days. For the single layer model of the UPA, the travel time from the SWIFT MW to TW-1 was 372 days while the travel time from the USGS MW was 4,839 days. Travel times from the SWIFT MW within the MPA sublayers were 416 and 1,195 days, while travel times from the USGS MW within the MPA sublayers were 4,339 and 11,245 days. For the single layer model of the MPA, the travel time from the SWIFT MW to TW-1 was 743 days while the travel time from the USGS MW was 7,545 days.
Puerto, Valencia J. (Jose). "Predictive model creation approach using layered subsystems quantified data collection from LTE L2 software system." Master's thesis, University of Oulu, 2019. http://jultika.oulu.fi/Record/nbnfioulu-201907192705.
Повний текст джерелаWhite, Gregory William. "An investigation of the Australian layered elastic tool for flexible aircraft pavement thickness design." Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16663/1/Gregory_William_White_Thesis.pdf.
Повний текст джерелаWhite, Gregory William. "An investigation of the Australian layered elastic tool for flexible aircraft pavement thickness design." Queensland University of Technology, 2007. http://eprints.qut.edu.au/16663/.
Повний текст джерелаWong, Rachel Hiu Kam. "The making of construction workers : subjectivity, collectivity and the multi-layered subcontracting system in the Hong Kong construction industry /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?SOSC%202005%20WONG.
Повний текст джерелаGarcía, García Alejandro. "Multiscale analysis of multi-layered tissues constructs : interfaces in the musculo-skeletal system based on tissue engineered osteotendinous junctions." Thesis, Compiègne, 2019. http://www.theses.fr/2019COMP2488.
Повний текст джерелаThe objective of this thesis was the development of a biohybrid substitute for the reconstruction of the bone-tendon continuum based on tissue engineering strategies. After an exhaustive bibliographic analysis of the native structures and their environment, we first proposed the realization of each system separately using electrospun polycaprolactone scaffolds. At first, we combined electrospinning with electrospraying techniques to produce a PCL-hydroapatite scaffold with honeycomb cavities. Our hypothesis was to provide the substitute with a biomimetic structure favoring cell adhesion, spreading and differentiation. The in vitro mechanical and biological analysis performed with a progenitor cell line and withorganotypic assays confirmed our original approach. Then, the material seeded with bone marrow stem cells was successfully implanted by our collaborators in Amiens with the objective of treating a maxillofacial defect in a rodent model. In parallel, for the tendon reconstruction, we investigated several electrospinning processes, varying fibers’ size and organization (random/aligned). In a bioinspired perspective, we combined the choice of the scaffold with dynamic stretching to reproduce physical training. Under those mechanical stimulations, established first with the same progenitor cell line, we demonstrated in a second study that MSCs aligned with the stretching axis and produced extracellular matrix, which in turn allowed to keep the mechanical properties of the biohybrid scaffold all over the 2 weeks of culture. We demonstrated that cell differentiation towards tendon and bone lineage was successfully achieved in the absence of any differentiation factor, being specifically related to materials properties and mechanotransduction. Therefore, the next step consisting in the assembly of both scaffolds with a transition area should lead to this bone-tendon continuum’s reconstruction
Waqar, Hafiz Umer. "Comparison between .NET and Java EEImplementation of Cash & Bank System." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-23415.
Повний текст джерелаViljoen, Suretha. "Analysis of crosstalk signals in a cylindrical layered volume conductor influence of the anatomy, detection system and physical properties of the tissues /." Diss., Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-08082005-113739.
Повний текст джерелаNakamura, Yasuyuki. "Existence of a compensation temperature of a mixed spin-2 and spin-5/2 Ising ferrimagnetic system on a layered honeycomb lattice." The American Physical Society, 2000. http://hdl.handle.net/2237/7150.
Повний текст джерелаAlsulami, Uthman Eyad N. [Verfasser], and J. [Akademischer Betreuer] Geis-Gerstorfer. "Influence of the coefficient of thermal expansion mismatch on the bond strength of bi-layered all ceramic system / Uthman Eyad N. Alsulami ; Betreuer: J. Geis-Gerstorfer." Tübingen : Universitätsbibliothek Tübingen, 2014. http://d-nb.info/1196877696/34.
Повний текст джерелаWall, Corey James. "Establishing the age and duration of magmatism in large open-system layered intrusions from the high-precision geochronology of the Neoarchean Stillwater Complex and Paleoproterozoic Bushveld Complex." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58716.
Повний текст джерелаScience, Faculty of
Earth, Ocean and Atmospheric Sciences, Department of
Graduate
Helmer, Markus Verfasser], Theo [Akademischer Betreuer] [Geisel, and Fred [Akademischer Betreuer] Wolf. "Attention: A Complex System : From the Intricate Modulation of Tuned Responses Towards a Layered Cortical Circuit Model / Markus Helmer. Betreuer: Theo Geisel. Gutachter: Theo Geisel ; Fred Wolf." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2015. http://d-nb.info/1080609962/34.
Повний текст джерелаAlmasarwah, Najat E. MASARWAH. "Multi-Stage Cellular Manufacturing System Design under Certain and Uncertain Conditions." Ohio University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1605028865095297.
Повний текст джерелаWeisbach, Tobias, Jens Sumpf, and Christian Bumm. "Thermoplastic Multilayer Slide-Foil." Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-231676.
Повний текст джерелаDas Training von Bewegungsabläufen, zur Steigerung von Fähigkeiten, ist ein fundamentaler Bestandteil im Leistungssport. Ein realistisches Training, unterstützt durch technische Systeme, ermöglicht es Athleten optimale Trainingserfolge zu erzielen und wird dementsprechend von Trainern und Leistungszentren überall auf der Welt gewünscht. Insbesondere in Wintersportarten, wie z. B. Rennrodeln oder Bobfahren, kann dies allerdings nur bedingt realisiert werden und erfordert oftmals Abstriche bei der Trainingsgestaltung. Im Rahmen dieses Beitrags wird daher eine mehrschichtige Verbundfolie vorgestellt, welche den Athleten ein realistischeres Training ermöglichen soll. Hierzu werden zum einen der Aufbau und die Herstellung des Folienverbundes erläutert sowie tribologische Untersuchungsergebnisse präsentiert
Pech, David. "Cloud Framework on Infrastructure as a Service." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2013. http://www.nusl.cz/ntk/nusl-236185.
Повний текст джерелаHeath, Gerhardus. "Dynamic reconfigurable platform for swarm robotics." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6814.
Повний текст джерелаENGLISH ABSTRACT: Swarm intelligence research was inspired by biological systems in nature. Working ants and bees has captivated researchers for centuries, with the ant playing a major role in shaping the future of robotic swarm applications. The ants foraging activity can be adapted for different applications of robotic swarm intelligence. Numerous researchers have conducted theoretical analysis and experiments on the ants foraging activities and communication styles. Combining this information with modern reconfigurable computing opens the door to more complex behaviour with improved system dynamics. Reconfigurable computing has numerous applications in swarm intelligence such as true hardware parallel processing, dynamic power save algorithms and dynamic peripheral changes to the CPU core. In this research a brief study is made of swarm intelligence and its applications. The ants' foraging activities were studied in greater detail with the emphasis on a layered control system designed implementation in a robotic agent. The robotic agent’s hardware was designed using a partial self reconfigurable FPGA as the main building element. The hardware was designed with the emphasis on system flexibility for swarm application drawing attention to power reduction and battery life. All of this was packaged into a differential drive chassis designed specifically for this project.
AFRIKAANSE OPSOMMING: Die motivering vir swerm robotika kom van die natuur. Vir eeue fassineer swerm insekte soos bye en miere navorsers. Dit is verstommend hoe ’n groep klein en nietige insekte sulke groot take kan verrig. Die mier speel ‘n belangrike rol en is die sentrale tema van menige publikasies. Die mier se kos-soek aktiwiteit kan aangepas word vir swerm robotika toepassings. Hierdie aktiwiteit vervat verskeie sleutel konsepte wat belangrik is vir robotika toepassings. Deur bv. die mier se aktiwiteite te kombineer met dinamies herkonfigureerbare hardeware, kan meer komplekse gedrag bestudeer word. Die stelsel dinamika verbeter ook, aangesien dit nou moontlik is om sekere take in parallel uit te voer. Deur ’n interne prosesseerder in die herkonfigureerbare hardeware in te sluit, is dit nou vir die stelsel moontlik om homself te verander tydens taak verrigting. Komplekse krag bestuur gedrag is ook moontlik deurdat die prosesseerder die spoed en rand apparaat kan verander soos benodig. ‘n Verdere voordeel is dat die stelsel aanpasbaar is en dus vir verskeie navorsingsprojekte gebruik kan word. In hierdie navorsing word ’n literatuur studie van swerm robotika gemaak en word daar ook na toepassings gekyk. Met die klem op praktiese implementering, word die mier se kos-soek aktiwiteit in detail ondersoek deur gebruik te maak van ’n laag beheerstelsel. In hierdie laag beheerstelsel verteenwoordig elke laag ’n hoër vlak gedrag. Stelsel aanpasbaarheid en lae kragverbruik speel ’n deurslaggewende rol in die ontwerp, en om hierdie rede vorm ’n FPGA die hart van die sisteem.
Younes, Sinaki Roohollah. "Financial Analysis and Global Supply Chain Design : A Case Study of Blood Sugar Monitoring Industry." Ohio University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1509119632628001.
Повний текст джерелаAbdurrhman, Ahmed B. M. "Error resilient video communications using high level M-QAM : modelling and simulation of a comparative analysis of a dual-priority M-QAM transmission system for H.264/AVC video applications over band-limited and error-phone channels." Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/4913.
Повний текст джерелаAbdurrhman, Ahmed B. M. "Error relilient video communications using high level M-QAM. Modelling and simulation of a comparative analysis of a dual-priority M-QAM transmission system for H.264/AVC video applications over band-limited and error-phone channels." Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/4913.
Повний текст джерелаForbes, Michael F. "Ultrasonic characterization of layered composite systems." Diss., Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/5633.
Повний текст джерелаGoddard, Paul. "Magnetotransport studies of layered metallic systems." Thesis, University of Oxford, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275491.
Повний текст джерелаLazar, Laura [Verfasser]. "Fe/Pb layered systems / Laura Lazar." Bochum : Universitätsbibliothek, Ruhr-Universität Bochum, 2003. http://d-nb.info/116793296X/34.
Повний текст джерелаMorgan, Bo. "A substrate for accountable layered systems." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/91854.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 193-196).
A system built on a layered reflective cognitive architecture presents many novel and difficult software engineering problems. Some of these problems can be ameliorated by erecting the system on a substrate that implicitly supports tracing the behavior of the system to the data and through the procedures that produced that behavior. Good traces make the system accountable; it enables the analysis of success and failure, and thus enhances the ability to learn from mistakes. This constructed substrate provides for general parallelism and concurrency, while supporting the automatic collection of audit trails for all processes, including the processes that analyze audit trails. My system natively supports a Lisp-like language. In such a language, as in machine language, a program is data that can be easily manipulated by a program, making it easier for a user or an automatic procedure to read, edit, and write programs as they are debugged. Constructed within this substrate is an implementation of the bottom four layers of an Emotion Machine cognitive architecture, including built-in reactive, learned reactive, deliberative, and reflective layers. A simple natural language planning language is presented for the deliberative control of a problem domain. Also, a number of deliberative planning algorithms are implemented in this natural planning language, allowing a recursive application of reflectively planned control. This recursion is demonstrated in a fifth super-reflective layer of planned control of the reflective planning layer, implying N reflective layers of planned control. Here, I build and demonstrate an example of reflective problem solving through the use of English plans in a block building problem domain. In my demonstration an AI model can learn from experience of success or failure. The Al not only learns about physical activities but also reflectively learns about thinking activities, refining and learning the utility of built-in knowledge. Procedurally traced memory can be used to assign credit to those thinking processes that are responsible for the failure, facilitating learning how to better plan for these types of problems in the future.
by Bo Morgan.
Ph. D.
Chiu, Hon-sun, and 邵漢新. "Receiver-driven layered multicast over IP networks." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B29735853.
Повний текст джерелаVan, der Westhuizen Maria Jacoba. "The engineering and optimization of expression of rotavirus-like particles in insect cells using a South African G9P[6] rotavirus strain / by Maria J. van der Westhuizen." Thesis, North-West University, 2012. http://hdl.handle.net/10394/9852.
Повний текст джерелаThesis (MSc (Biochemistry))--North-West University, Potchefstroom Campus, 2013.
Sucharitakul, Sukrit. "2D ELECTRONIC SYSTEMS IN LAYERED SEMICONDUCTING MATERIALS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case1491497351482802.
Повний текст джерелаFitzpatrick, Paul G., and paul g. fitzpatrick@team telstra com. "Traffic modelling and performance of layered cellular networks with overflow." Swinburne University of Technology, 1997. http://adt.lib.swin.edu.au./public/adt-VSWT20060119.093920.
Повний текст джерелаBreier, Annette. "Grundlegende Untersuchungen zur Integration eines Wirkstofffreisetzungssystems in ein textiles Knochenimplantat am Beispiel des Antibiotikums Gentamicin." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-181922.
Повний текст джерелаTo reduce the risk of infection in the treatment of long bone defects, a novel embroidered bone implant is to be provided with an antibiotic drug delivery system. Prolonged and controlled drug release can be achieved by coating the thread material with antibiotics incorporated in a degradable polymer matrix. The chosen drug delivery system is composed of polylactide acid (PLA) or poly(lactide-co-glycolide) acid (PLGA) as matrix polymer and the antibiotic gentamicin. It is integrated into the textile structure by dip-coating providing the three different methods suspension, emulsion and layered. Each method bears its appropriate parameters to influence the releasing profile. The suspension-method and its parameters grain size and grain size distribution as well as mass fraction of the antibiotic and the coating thickness could be proved as the most feasible. In part II of this essay the chosen coating set-up gets optimized so that a drug release nearly along the whole required term can be achieved. Preliminary in vitro studies show a good cell tolerance besides a sufficient microbial efficacy
Ajemian, Stephen P. "Modeling and evaluation of aerial layer communications system architectures." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/90705.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 90-91).
Airborne networks are being developed to provide communications services in order to augment space-based and terrestrial communications systems. These airborne networks must provide point to point wireless communications capabilities between aircraft and to ground-based users. Architecting airborne networks requires evaluating the capabilities offered by candidate aircraft to operate at the required altitudes to bridge communications among ground users dispersed over large geographic areas. Decision makers are often faced with choices regarding the type and number of aircraft to utilize in an airborne network to meet information exchange requirements. In addition, the type of radio required to meet user needs may also factor into the architecture evaluation for an airborne network. Aircraft and radio design choices must be made under cost constraints in order to deliver capable communications architectures at an acceptable cost. Evaluating communications architectures is often conducted with modeling and simulation. However, evaluations typically focus on specific network configurations and can become intractable when varying design variables such as aircraft and radio types due to the complexity of the trade space being analyzed. Furthermore, the growth in choices for design variables (such as additional aircraft types) can lead to enormous growth in the number of feasible candidate architectures to analyze. The methodology developed and presented herein describes an approach for evaluating a large number of architecture combinations which vary on aircraft type and radio type for representative airborne networks. The methodology utilizes modeling and simulation to generate wireless communications performance data for candidate aircraft and radio types and enumerates a large trade space through a computational tool. The trade space is then evaluated against a multi-objective decision model to rapidly down-select to a handful of candidate architectures for more detailed analysis. The results of this analysis provide effective tools for reducing the complex trade space to a tractable number of architectures to make an informed architectural decision with no prior articulation of preferences for performance measures. For the notional concept of operation analyzed, the number of feasible architectures was approximately 500,000 for each of the two radio types examined. The decision model implemented reduced the feasible architectures to approximately 50 near-optimal architectures for each radio type. From this manageable set of near-optimal architectures, an analysis is conducted to evaluate marginal benefits versus cost to further reduce the candidate architectures to 3 architectures for each radio type. From these remaining architectures, detailed analysis and visualization can be conducted to aid decision makers in articulating preferences and identifying a single "best" architecture based on mission needs. The enumeration of the trade space using the computational tool and multi-objective decision model is highly flexible to incorporating new constraints and generating new candidate architectures as stakeholder preferences become clearer. The trade space enumeration and decision model can be conducted rapidly to down-select large trade spaces to a tractable number of communications architectures to inform an architectural recommendation.
by Stephen P. Ajemian.
S.M. in Engineering and Management
Förster, Stefan. "A formal framework for modelling component extension and layers in distributed embedded systems /." Dresden : TUDpress, 2007. http://www.loc.gov/catdir/toc/fy0803/2007462554.html.
Повний текст джерелаCotuk, Umit. "Scattering from multi-layered metamaterials using wave matrices." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Sep%5FCotuk.pdf.
Повний текст джерелаDu, Jianxuan. "Layered Space-Time Structure for MIMO-OFDM Systems." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7204.
Повний текст джерелаBridgeman, Catherine H. "Computational studies of layered materials and aqueous systems." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388760.
Повний текст джерелаIqbal, Muhammad Ahsan. "Layered double hydroxide based smart protective coating systems." Doctoral thesis, Università degli studi di Trento, 2021. http://hdl.handle.net/11572/302211.
Повний текст джерелаCarr, Joel Matthew. "CONFINED LAYERED POLYMERIC SYSTEMS FOR PACKAGING ANDCAPACITOR APPLICATIONS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1363104386.
Повний текст джерела