Thèses : « Platformism »

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Suh, Eun Suk. "Flexible product platforms." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33727.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Engineering Systems Division, 2005. Includes bibliographical references (leaves 155-162). The research contributes to the uncertainty management of engineering systems by proposing and demonstrating a way to implement flexible platform strategy to respond to future uncertainties. In today's competitive market, where market segments are becoming more fragmented, pressure to develop and market diverse sets of products is increasing. To meet such market needs and reduce production cost at the same time, product platform strategy has been implemented in several different industries. Using a core set of common platform elements and variant-specific unique elements, a family of products can be produced to satisfy various market segments. However, the growing cost of platform development and undesired side effects of the strategy (e.g. performance tradeoff, cannibalization) is forcing companies to design their platforms with flexibility, so they can accommodate product variants, differentiate these variants, and be economically flexible to respond to specified future uncertainties. This thesis introduces a design process to architect flexible product platforms. The proposed process is demonstrated in two automotive application case studies. (cont.) In the first case study, a vehicle floor pan is designed to satisfy two different length requirements, while being economically robust to future specification change and component demand. The second case study investigates a vehicle platform, where the flexible body in white (BIW) platform is designed for a family of three vehicle variants through identification of critical elements subset. Results showed that the flexible BIW platform is less profitable than the inflexible BIW platform, but when the degree of future uncertainty increases, the flexible design eventually becomes more profitable. This research provides additional examples that yet again confirms the general proposition "flexibility gains value as the degree of uncertainty increases." by Eun Suk Suh. Ph.D.

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Niedermayer, Andras. "Platforms and intermediaries." Berlin dissertation.de, 2008. http://d-nb.info/990430669/04.

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Morales, Néstor, and Manuel Serrano. "Autonomous Robotics Platforms." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-17261.

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Nowadays, it is of crucial importance for the manufacturing industry to be prepared for the application and understanding of autonomous mobile robots. Given this fact, educational institutions have to provide knowledge and experience to students. These autonomous mobile robots are made and controlled using different platforms and programming languages. Currently, the University of Skövde wishes to expand the range of tools to be available for building and experimenting with autonomous robots. For this purpose, this thesis project has two main goals. The first goal is finding the best available robotic platform for small scale, self-built, programmable robots. Such a platform has to include all the hardware necessary for later implementation with the software. The platform is evaluated in this thesis following different criteria. The second goal is to build a robot using the chosen platform. The robot has to perform a certain task taking advantage of its specific hardware. The development of the task has been achieved using the Robot Operative System (ROS). This thesis provides step by step instructions of how to build the platform and perform the task.

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Pocius, Tadas. "Mobile airline to passenger communication." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140630_114843-59334.

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In the final master’s dissertation analysis on current 15below communication platform PASNGR. In addition to this there is a short analysis done on each of PASNGR components to find out usage possibilities. Furthermore, the platform is dependant on Reservation Systems, so analysis on them is done as well, including processes and data. The goal of this dissertation is to create a mobile app integrated into PASNGR. For this reason integration analysis is done, by reviewing components, data and functions. After analysis is done, Business Process Model is created to represent the workflow of the app, including internal processes and interaction with PASNGR. Furthermore a review of mobile application technologies is done, including common tools used in development. By doing this there is the best solution for current 15below developers’ environment found. The solution would mean the least resources to be used to develop the app. Finally a prototype of the mobile application is created, to show the possibilities. The app works on Android and iOS platforms, gives an ability for user to download itineraries and store for offline usage, an ability to scan a barcode at the airport straight from the app, give post flight experience feedback for the airline, receive schedule change notifications and accept them. Baigiamajame magistro darbe atliekama kompanijos „15below“ naudojamos avialinijų komunikacijos su keleiviais platformos „PASNGR“ analizė. Atskirai atliekama trumpa kiekvieno „PASNGR“ modulio apžvalga įvertinant taikymo galimybes. Be to, kadangi platforma yra priklausoma nuo globaliųjų paskirstymo sistemų, apžvelgiamos ir jos apimant procesus, bei naudojamus duomenis. Darbe yra numatomas sukurti mobiliosios aplikacijos prototipas surištas su „PASNGR“ platforma. Tam tikslui yra atliekama integracijos analizė, apžvelgiant komponentus, duomenis ir funkcijas. Galiausiai yra sukuriamas veiklos proceso modelis atvaizduojantis mobiliosios aplikacijos prototipo veikimo principus, bei interakciją su platforma „PASNGR“. Darbo eigoje apžvelgiamos mobiliųjų aplikacijų technologijos, bei įrankiai joms kurti. Taip parenkamas priimtiniausias spendimas esamai kompanijos „15below“ programuotojų aplinkai ir lemiantis minimalias sąnaudas. Galiausiai sukuriamas mobiliosios aplikacijos prototipas veikiantis Android ir iOS platformose, gebantis atsisiųsti elektroninius bilietus į mobilųjį įrenginį ir jame išsaugoti naudojimui neprisijungus prie interneto, leidžiantis naudotojui skenuoti brūkšninį kodą oro uoste, po skrydžio pateikti nuomonę apie gautas avialinijų paslaugas, priimti pranešimus apie skrydžių pakeitimus, bei leisti juos patvirtinti.

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Hartmann, Dominik 1966. "Singular Stewart-Gough platforms." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23369.

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A special type of singular Stewart-Gough Platform exhibits continuous motion of one or more degrees of freedom, while all of its six or more legs are locked at fixed length. The equation describing point motion is introduced and then applied to parallel platforms. Line geometric analysis shows that all legs remain in a continuously varying linear complex, linear congruence, or quadric. Base and platform joints are restricted to lie on two congruent, skewed hyperbolids of one sheet. One of these constitutes those points on the rigid body of the platform that move on spheres, the other, those on the fixed base which constitute the sphere centres. An equivalent mechanism is developed and used to visualize the design parameters of the motion. The selection, as platform joints, of points on a line generator results in a two degree of freedom platform. Specific designs of such overconstrained mechanisms are investigated and illustrated. Line geometry is used, to explain the special relationship among the platform legs. Numerical examples are given and illustrated.

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Sinha, Deeksha. "Optimization for online platforms." Thesis, Massachusetts Institute of Technology, 2021. https://hdl.handle.net/1721.1/130723.

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Thesis: Ph. D., Massachusetts Institute of Technology, Sloan School of Management, Operations Research Center, February, 2021 Cataloged from the official PDF of thesis. Includes bibliographical references (pages 179-189). In the last decade, there has been a surge in online platforms for providing a wide variety of services. These platforms face an array of challenges that can be mitigated with appropriate modeling and the use of optimization tools. In this thesis, we examine, model, and provide solutions to some of the key challenges. First, we focus on the problem of intelligent SMS routing faced by several online platforms today. In a dynamically changing environment, platforms need to carefully choose SMS aggregators to have a high number of text messages being delivered to users at a low cost. To model this problem, we consider a novel variant of the multi-armed bandit (MAB) problem, MAB with cost subsidy, which models many real-life applications where the learning agent has to pay to select an arm and is concerned about optimizing cumulative costs and rewards. We show that naive generalizations of existing MAB algorithms like Upper Confidence Bound and Thompson Sampling do not perform well for the SMS routing problem. For an instance with K arms and time horizon T, we then establish a fundamental lower bound of [omega](K¹/³T²/³) on the performance of any online learning algorithm for this problem, highlighting the hardness of our problem in comparison to the classical MAB problem. We also present a simple variant of explore-then-commit and establish near-optimal regret bounds for this algorithm. Lastly, we perform numerical simulations to understand the behavior of a suite of algorithms for various instances and recommend a practical guide to employ different algorithms. Second, we focus on the problem of making real-time personalized recommendations which are now needed in just about every online setting, ranging from media platforms to e-commerce to social networks. While the challenge of estimating user preferences has garnered significant attention, the operational problem of using such preferences to construct personalized offer sets to users is still a challenge, particularly in modern settings with a massive number of items and a millisecond response time requirement. Thus motivated, we propose an algorithm for personalized offer set optimization that runs in time sub-linear in the number of items while enjoying a uniform performance guarantee. Our algorithm works for an extremely general class of problems and models of user choice that includes the mixed multinomial logit model as a special case. Our algorithm can be entirely data-driven and empirical evaluation on a massive content discovery dataset shows that our implementation indeed runs fast and with increased performance relative to existing fast heuristics. Third, we study the problem of modeling purchase of multiple items (in online and offline settings) and utilizing it to display optimized recommendations, which can lead to significantly higher revenues as compared to capturing purchase of only a single product in each transaction. We present a parsimonious multi-purchase family of choice models called the BundleMVL-K family, and develop a binary search based iterative strategy that efficiently computes optimized recommendations for this model. We establish the hardness of computing optimal recommendation sets and characterize structural properties of the optimal solution. The efficacy of our modeling and optimization techniques compared to competing solutions is shown using several real-world datasets on multiple metrics such as model fit, expected revenue gains, and run-time reductions. Fourth, we study the problem of A-B testing for online platforms. Unlike traditional offline A-B testing, online platforms face some unique challenges such as sequential allocation of users into treatment groups, large number of user covariates to balance, and limited number of users available for each experiment, making randomization inefficient. We consider the problem of optimally allocating test subjects to either treatment with a view to maximize the precision of our estimate of the treatment effect. Our main contribution is a tractable algorithm for this problem in the online setting, where subjects must be assigned as they arrive, with covariates drawn from an elliptical distribution with finite second moment. We further characterize the gain in precision afforded by optimized allocations relative to randomized allocations and show that this gain grows large as the number of covariates grows. by Deeksha Sinha. Ph. D. Ph.D. Massachusetts Institute of Technology, Sloan School of Management, Operations Research Center

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Youssefzadeh, Salim Benjamin. "Future of Payment Platforms." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1241.

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With the vast increase in smartphones, there have been an increasing number of opportunities growing in the app industry. One in particular is the way we deal with money. There are huge overheads in the current payment systems around the world particularly in the United States, many of which include large transaction fees. Many new businesses have grown to solve these inefficiencies and create a new platform that provides a new user experience, security, and convenience among many other things. However, many of these platforms are still centralized, making them more susceptible to attacks. This thesis goes over the various methods of payments, starting from their origins and discusses their flaws and ways they are being improved. This study explains where payment platforms are going and how they line up against other platforms in terms of security and usability. We look at the origins of credit cards and why the US is lagging behind other countries in credit card security. Digital wallets like PayPal, Venmo, Square, etc. have done a remarkable job, but still have room for improvement in terms of security and usage. I try to solve these problems with the mobile application AnyCoin by bringing one platform that houses different types of digital wallets. The goal of this application was to grow a large user base and collect data off the transaction for future analysis and advertising. This study goes through an in depth analysis on the application from the iv perspective of merchants and consumers to understand what users are looking for in digital wallets. Decentralized platforms and crypto-currencies like Bitcoin have also created different ways to send money by creating a trustless system that does not depend on any central authority. I discuss what Bitcoin is and exactly how it works and the flaws in the current system. Mining is the process that puts Bitcoin into circulation and secures the network. However, as more customized hardware is released, Bitcoin will fall subject to becoming more centralized, and unfortunately become heavy regulated if it is to be used as a currency. Ethereum is a new technology that takes the concepts of Bitcoin and creates a platform for a developer to create a decentralized application. I create a few contracts that show how we can create a decentralized version of PayPal that works using other crypto- currencies. Ethereum is still in its alpha stage and has yet to be released to the public, but has already improved on the problems that Bitcoin and other crypto-currencies hold.

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Jermakovas, Ruslanas. "Rekomendacinis elektroninės prekybos platformos modelis." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2012~D_20131105_092012-43825.

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Šiame tyriamajame darbe suprojektuotas rekomendacinis elektroninės platformos modelis, kuris buvo dalinai realizuotas. Aprašyti svarbiausios tradicinės elektroninės parduotuvuės elementai. Išanalizuotos konkrečių elektroninių parduotuvių vartotojo sąsaja. Išskirti teigiami ir neigiami vartotojo sąsajos aspektai. Išanalizuotos atviro kodo (GPL (angl. General Public License – bendroji vieša licencija) elektroninės parduotuves. Išanalizuoti elektroninės parduotuvės veiklos sąveikos modeliai. Sukurtas el. Parduotuvės reikalavimų modelį, kuris apima geriausias nagrinėtų el. parduotuvių išskirtas sąvybes. In this project e-eommerce elatform reference model was designed and partly implemented. Described the main elements of the traditional electronic shops. Were analyzed the user interface of the electronic stores. Distinguished positive and negative aspects of the user interface. Were analyzed the open-source e-shops. Analyzed business interaction models of electronic stores. Created e. Shop requirements model, which includes the best examined properties of e-stores.

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Estrada, Jiménez José Antonio. "Privacy in online advertising platforms." Doctoral thesis, Universitat Politècnica de Catalunya, 2020. http://hdl.handle.net/10803/669772.

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Online advertising is consistently considered as the pillar of the "free• content on the Web since it is commonly the funding source of websites. Furthermore, the option of delivering personalizad ads has tumed advertising into a really valuable service for users, who receive ads tailored to their interests. Given its success in getting paying customers, online advertising is fueling a billionaire business. The current advertising model builds upon an intricate infrastructure whose main aim is to deliver personalized ads. For this purpose, a wealth of user data is collected, aggregated, processed and traded at an unprecedented rate. However, the intrusiveness and ubiquity of these practices prorrpt serious privacy concems. In view of the inherent corrplexity behind the operation of ad platforms, privacy risks in the online advertising ecosystem could be studied from multiple perspectives. Naturally, most of the efforts unveiling these privacy issues concentrate on a specific entity, technology, behavior or context. However, such a segmented approach rright underestimate the benefits of a wider vision of a systerric problem. A lot of privacy protection echanisms have been proposed from the industry and acaderria. The most popular ones resort to radical strategies that hinder the ad distribution process, thus seriously affecting the online advertising ecosystem. Others involve significantly changing the ecosystem, which unfortunately may not be suitable in these times. Consequently, to encourage the adoption of privacy protection in this context, it is fundamental to pose mechanisms that aim at balancing the trade-off between user privacy and the web business model. First, this thesis deals with the need to have a wide perspective of the privacy risks for users within the online advertising ecosystem and the protection approaches available. We survey the online advertising infrastructure and its supporting technologies, and present a thorough overview of the undertying privacy risks and the solutions that may rritigate them. Through a systematic effort, we analyze the threats and potential privacy attackers in this scenario of online advertising.Then, we conduct a corrprehensive survey of the most relevant privacy mechanisms, and classify and con-pare them on the basis of their privacy guarantees and irrpact on the Web. Subsequently, we study the privacy risks derived from real-time bidding, a key enabling technology of modem online advertising. We experimentally explore the potential abuse of the process of user data sharing, necessary to support the auction-based system in online advertising. Accordingly, we propase a system to regula te the distribution of u ser tracking data to potentially interested entities, depending on their previous behavior.This consists in reducing the nurnber of advertising agencies receiving user data. Doing so may affect the ad platform's revenue, thus the proposed system is designed to maxirrize the revenue while the abuse by advertising agencies is prevented to a large degree. Experimentally, the results of evaluation suggest that this system is able to correct rrisbehaving entities, consequently enhancing user privacy. Finally, we analyze the irrpact of online advertising and tracking from the particular perspective of lberoamerica.We study the third-party and ad tracking triggered within local websites in this heterogeneous region not previously studied. We found out that user location in this context would affect privacy since the intensity of third-party traffic, including advertising related flows of information, varies from country to country when local web traffic is simulated, although the total nurnber of entities behind this traffic seems stable. The type of content served by websites is also a parameter affecting the leve! of third-party tracking:publishers assiciated with news shopping categories generate more third-party traffic and such intensity is exarbated for top-world sites La publicitat en línia té un paper important a Internet que permet finançar habitualment l'operació de llocs web que ofereixen contingut lliure als usuaris. A més, la personalització dels anuncis ha tornat la publicitat en línia un servei valuós per als usuaris. Si aconseguirem que hi hagi molts compradors siguin més que possibles, es promourà un negoci milionari. El model d'anuncis vigents es basa en una infraestructura completa que lliura els anuncis personalitzats. Pera això, es pot recopilar una gran quantitat de dades d'ús, agregar, processar i vendre molt ràpidament. Malauradament, aquestes pràctiques generen riscos de privadesa. Donada la complexitat de l'operació de les plataformes d'anuncis, els riscos de privacitat es poden estudiar des de diverses perspectives. Naturalment, els esforços per desenvolupar aquests problemes de privacitat es concentren en una entitat, tecnologia, comportament o context específic. Però aquest enfocament subestima els beneficis d'una perspectiva més àmplia d'un problema integral. Molts mecanismes de protecció han estat proposats des de la indústria i l’àmbit acadèmic. Els més populars apliquen estratègies radicals que obstrueixen la distribució d'anuncis, afectant seriosament l’ecosistema d'anuncis. També es pot modificar significativament l’ecosistema, el que no és factible per la seva conflictivitat. Així, amb la finalitat de fomentar l'adopció de protecció de privacitat, és fonamental plantejar solucions orientades a equilibrar les necessitats de privacitat amb el model de negocis de la web. Inicialment, la tesi ofereix una visió amplia dels riscos de privacitat i els mecanismes de protecció a ecosistema d'anuncis en línia. Això es pot aconseguir basant-se en una revisió de la infraestructura i tecnologies subjacents en aquest context. Analitza sistemàticament les amenaces i potencies atacants. A continuació es revisa exhaustivament els mecanismes de privacitat més rellevants, i es classifica i es compara segons les garanties de privacitat que s'ofereixen i el seu possible impacte a la web. Seguidament, s'estudia els riscos de privadesa derivats de les ofertes en temps real, una tecnologia clau del sistema d'anuncis en línia modern. Experimentalment, s'inverteixen els riscos del procés de distribució de dades d'ús, part del sistema basat en licitacions de la publicitat en línia. Es proposa un sistema que regula la distribució de dades d'ús a tercers, depenent del seu comportament previ. Això consisteix en reduir el nombre d’agències anunciants que rebin dades d'ús. Per mitigar l’impacte sobre els ingressos del sistema d'anuncis, aquesta reducció és malaltia i l'objectiu de maximitzar els declaracions ingressades. Experimentalment, es troba que el sistema proposat corregir els comportaments maliciosos, millorant la privacitat dels usuaris. Finalment, s'analitza l'impacte del rastre i la publicitat en línia des de la perspectiva iberoamericana. Estudiem el rastreig de tercers i allò relacionat amb els anuncis que se generen en llocs web locals en aquesta regió heterogènia. Trobem que la ubicació de l'usuari en aquest context afecta la privacitat de l'usuari ja que aquest rastreig varia de país a país, tot i que el nombre total d'entitats darrere d'aquest transit sembla estable. El tipus de contingut afecta també el nivell de rastreig: llocs web de noticies o de compres generen més transit cap a tercers i aquesta intensitat s'exacerba en els llocs més populars.

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Andersson, Per-Oskar. "Rhapsody on small processor platforms." Thesis, Linköping University, Department of Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-12214.

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Rhapsody is a Model-Driven Development (MDD) tool for embedded and real-time system design. The purpose of this thesis is to determine if Rhapsody can be used for software development on small processor platforms such as the Atmel AVR. Rhapsody is normally used on platforms running an operating system. Therefore certain adaptations are needed in order to use it on platforms without an operating system. These adaptations and their affect on the usability of the tool, advantages and disadvantages are all studied while porting AVR-software to Rhapsody on one of CC Systems products, the robust on-board computer CC Pilot XL II. Rhapsody är ett verktyg för modelldriven utveckling och design av inbyggda system och realtidssystem. Syftet med detta examensarbete är att undersöka om Rhapsody kan användas för att utveckla mjukvara till små processorplattformar som Atmel’s AVR. Då Rhapsody normalt används till plattformar med ett operativsystem behöver vissa modifieringar göras för att möjliggöra utveckling mot plattformar utan operativsystem. Dessa modifieringar, deras för och nackdelar samt påverkan på utvecklingsprocessen undersöks medan AVR-mjukvara porteras till Rhapsody. Mjukvaran som porteras är en del av styrsystemet till en av CC Systems produkter: CC Pilot XL II, en robust fordonsdator.

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Jansson, Gustav. "Platforms in industrialised house-building." Doctoral thesis, Luleå tekniska universitet, Byggkonstruktion och -produktion, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18777.

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Demands for shorter lead times, customized buildings and high quality deliveries drive house-building firms to systematise work in their supply chains. A practice of reusing processes and technical solutions leads to the formation of platforms in industrialised house-building. Product platforms originate from industries employing a make-to-order strategy, where platforms are used to achieve efficient design and product development work. The house-building design phase, integrated in an engineer-to-order supply chain, has been identified as crucial for achieving an efficient production. In the design phase, design work combines platform predefinitions with project requirements. The aim of this thesis is to describe how house-building platforms are systematised, as well as propose a framework for the use and development of platforms over time.To expand the knowledge development and use of platforms in house-building design, case studies were conducted that collected data from interviews and observations as well as using archival data at two different companies. One was a Swedish industrialised house-building company, with many levels of platform predefinitions that use off-site production; the other was a Swedish company using several platforms employing industrialised methods for on-site production. The design work of over sixty building projects has been studied through following project managers, engineers and platform developers in their day-to-day work. The use in projects of predefinitions of functional requirements, components, processes and relationships has been compared and contrasted using platform and engineering design theories.The result of this research shows that, in an engineer-to-order production strategy, creative and systematic designs are combined. This combination is needed to create product uniqueness and thus it is important to understand and maintain the balance between commonality and distinctiveness within the platforms used in housebuilding projects. Continuously changing demands in construction hinder a fully predefined platform. Long cycle times in house-building demand a continuous flow of knowledge between platform and day-today work in projects. Hence, platform versions and product variants often become non-functional in an engineer-to-order supply chain, so methods to support the knowledge flow become necessary. The research findings show that design work, integrated into the supply chain of house-building, is a source of experience feedback for platformdevelopment.The conclusion is that a movement towards mass customization in house-building is possible using the product platform concept, if the platform is applied to projects using support methods with experience being continuously fed back to the platform from house-building projects. However, there is a risk that use of predefinition in platforms is made without considering the consequences. The reuse of predefined processes could limit innovation capability, increase the risk for imitation and organisational inertia. Too great a restriction of components in the house-building platform could limit the product offer and narrow the market segment. The study also shows that predefinitions might lead to an unbalanced focus on buildability instead of client satisfaction. Krav på kortare ledtider, kundanpassat byggande och hög kvalitet på leveranser tvingar byggföretagen att systematisera arbetet i sina produktionsled. Genom att återanvända processer och tekniska lösningar kan det dagliga arbetet utvecklas inom plattformar för industriellt bostadsbyggande. Produktplattformar med syfte att stödja effektiv design och produktutveckling baseras på strategier för tillverka mot order produktion. Projekteringsfasen, som en integrerad del avbostadsbyggandets produktionskedja, har identifierats som avgörande för att erhålla en effektiv produktion. I projekteringsfasen kombineras fördefinitioner från plattformen med projektets krav. Syftet med denna avhandling är att beskriva hur bostadsplattformar kan systematiseras, och föreslå ett ramverk för användning och utveckling av plattformar över tid.För att fördjupa kunskapen om hur plattformar används och utvecklas i bostadsprojektering har fallstudier genomförts genom insamling av data via intervjuer, observationer och arkiv hos två olika företag. Ett svenskt industriellt bostadsbyggande företag med hög grad av fördefinering för prefabricerad produktion. Det andra företaget använder flera plattformar och industrialiserade metoder för platsbyggande produktion. Projekteringsarbete har studerats i över sextio bostadsprojekt genom att följa projektledare, ingenjörer och plattformsutvecklare i deras dagliga arbete. Användandet av fördefinierade funktionskrav, komponenter, processer och relationer har analyserats mot plattforms och designteorier.Forskningsresultatet visar att kreativt och systematiskt arbete kombineras i en konstruera-mot-order kontext. Kombinationen är nödvändig för produktens unikitet, och därför är balansen mellan repetition och variation viktigt för förståelse om och andvändande av plattformar i husbyggnadsprojekt. Ständigt föränderliga krav inom byggandet hindrar en fullt fördefinierad plattform. Långa cykeltider i bostadsbyggandet ställer krav på ett kontinuerligt flöde av kunskap mellan plattform och det dagliga arbetet inom byggprojekten. Plattformsversioner och produktvarianter blir ofta icke-funktionella i en konstruera-mot-order kontext, metoder behövs därför för att stödja flödet. Forskningsresultaten visar på att projekteringsarbete, integrerat i bostadsbyggandets leveranskedja, är en källa för erfarenhetsåterföring i utveckling av en plattform.Slutsatserna visar att en förändring mot effektivt kundanpassat bostadsbyggandet är möjlig om plattformar används tillämpade i projekt med stödjande metoder och kontinuerlig erfarenhetsåterföring från byggprojekten till plattformen. Däremot, finns det en risk att plattformar fördefinieras utan att reflektera över konsekvenserna. Användning av fördefinierade processer skulle kunna begränsa innovationsförmågan, öka risken för imitation och skapa förändringsmotstånd inom organisationer. Detaljering av komponenter i en bostadsplattform kan begränsa produktutbudet och minska marknadssegmentet. Studien visar också att fördefinitioner kan leda till obalanserad fokusering på byggbarhet istället för funktionalitet för kunden. Godkänd; 2013; 20131003 (gusjan); Tillkännagivande disputation 2013-10-29 Nedanstående person kommer att disputera för avläggande av teknologie doktorsexamen. Namn: Gustav Jansson Ämne: Träbyggnad/Timber Structure Avhandling: Platforms in Industrialised House-Building Opponent: Professor Brian Atkin, Project Management Academy, Queensland University of Technology, Brisbane, Australien Ordförande: Docent Helena Johnsson, Institutionen för samhällsbyggnad och naturresurser, Luleå tekniska universitet Tid: Torsdag den 21 november 2013, kl 10.00 Plats: F531, Luleå tekniska universitet

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El-Jabu, Bashir Ali R. "Cellular communications using aerial platforms." Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299380.

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SOUZA, EDUARDO ESTRELLA DE. "LOCATION PROPOSAL FOR PETROLEUM PLATFORMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=18539@1.

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Este trabalho descreve uma sistemática para localização de plataformas de petróleo baseado em um algoritmo de localização. Como critério principal será considerada a maximização do valor presente líquido das receitas do projeto. Devido ao elevado grau de incerteza na determinação da vazão inicial de cada poço e arbitrando-se valores de vazão para cada um dos poços de produção envolvidos, será adotado um percentual que vai estabelecer níveis mínimos e máximos de vazão, procurando corrigir possíveis erros relativos ao processo inicial de coleta e interpretação de dados. Além disso, um fator randômico será introduzido no cálculo da vazão inicial com o objetivo de aumentar a confiabilidade na determinação da possível localização da plataforma. A partir destas vazões iniciais e também das vazões ao longo do tempo de vida estabelecido para os poços, será calculado o valor presente líquido das receitas de cada poço e consequentemente o percentual de participação destes poços na proximidade com a plataforma. Este percentual representa o peso de cada poço na determinação da localização final da plataforma de petróleo. Por hipótese, a superfície do fundo do mar é semelhante a um plano, portanto não são considerados obstáculos nas ligações entre os vários poços e a plataforma. Para testar a sistemática, um problema exemplo será solucionado. This paper describes a system for locating oil rigs based on a general location algorithm. The problem consists in maximizing the net present revenue value of the project arbitrating discharge values for each of the production wells involved. Due to the high degree of uncertainty in determining the initial flow rate of each well it is assumed a percentage that will establish minimum and maximum levels of flow, trying to correct possible errors related to the initial collection and interpretation of data. In addition, a random factor is introduced when calculating the initial flow in order to increase reliability in determining the possible location of the platform. From these initial flow rates and also the flow over the lifetime established for the wells, the net present revenue value of each well and consequently the percentage of participation of these wells in proximity to the platform will be calculated. This percentage represents the weight of each well in determining the final location of the oil platform. The surface of the seabed is assumed similar to a plan, so no barriers are considered on the links between the various wells and the platform. A sample problem is solved to test the system described.

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Wang, Wei. "Accelerating Cryptosystems on Hardware Platforms." Digital WPI, 2014. https://digitalcommons.wpi.edu/etd-dissertations/109.

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In the past decade, one of the major breakthroughs in computer science theory is the first construction of fully homomorphic encryption (FHE) scheme introduced by Gentry. Using a FHE one may perform an arbitrary numbers of computations directly on the encrypted data without revealing of the secret key. Therefore, a practical FHE provides an invaluable security application for emerging technologies such as cloud computing and cloud-based storage. However, FHE is far from real life deployment due to serious efficiency impediments. The main part of this dissertation focuses on accelerating the existing FHE schemes using GPU and hardware design to make them more efficient and practical towards real-life applications. Another part of this dissertation is for the hardware design of the large key-size RSA cryptosystem. As the Moore law continues driving the computer technology, the key size of the Rivest-Shamir-Adelman (RSA) encryption is necessary to be upgraded to 2048, 4096 or even 8192 bits to provide higher level security. In this dissertation, the FFT multiplication is employed for the large-size RSA hardware design instead of using the traditional interleaved Montgomery multiplication to show the feasibility of the FFT multiplication for large-size RSA design.

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Thakare, Sudam Vivek. "Multifunctional platforms for cancer theranosis." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCK022/document.

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L'objectif de cette thèse était de développer des outils multifonctionnels pour l’élaboration d’agents théranostiques en oncologie, notamment à base de nanotechnologies. Le projet est basé sur l’utilisation de plateformes multimodales monomoléculaires comme précurseurs pour la synthèse de nanoparticules, de bioconjugués ou encore de sondes imageantes à base de petites molécules.Les premiers travaux ont concerné la synthèse de précurseurs silanes comportant un agent chélatant. Ces nouveaux précurseurs ont été mis en oeuvre pour la fonctionnalisation de nanoparticules AGuIX et ont également été utilisés dans un nouveau procédé de synthèse « one-pot » d’AGuIX. Le radiomarquage de ces nanoparticules a été réalisé dans le but d'évaluer la stabilité de ces nanoparticules dans des conditions physiologiques. Par ailleurs, ces nanoparticules ont été étudiées dans un modèle de tumeur TSA afin de déterminer leur comportement pharmacocinétique, leur biodistribution et leur potentiel en imagerie bimodale TEP-IRM.Dans une deuxième partie, des blocs de construction / ligands ont été développés et utilisés avec succès pour la fonctionnalisation de nanoparticules d'or. Des ligands multimodaux contenant différentes combinaisons de chélateurs, de fonctions de ciblage, de groupes fonctionnels et de chromophores, ont été synthétisés. Les nanoparticules d'or pour l'imagerie TEP-IRM et SPECT (ciblant le PSMA) ont été ensuite radiomarquées (64Cu/111In) et ont montré une excellente stabilité. Le ligand à base de PSMA présente une bonne affinité vis-à-vis du PSMA, tandis que les études in vivo dans un modèle tumoral TSA des nanoparticules d'or pour l'IRM-TEP ont démontré les bonnes propriétés pharmacocinétiques de ces nanoparticules fonctionnalisées, et donc leur potentiel en imagerie et en radiothérapie.La dernière partie du travail de thèse concerne le développement de sondes TEP-Optique pour l'imagerie ciblée de tumeurs surexprimant le PSMA en utilisant de petites sondes moléculaires, ainsi que pour leur bioconjugaison sur des fragments d'anticorps et des nanoparticules. Une sonde ciblant le PSMA, à base de NODAGA et du fluorophore IR-783, a été développée et caractérisée afin de déterminer ses propriétés photophysiques, son affinité pour le PSMA, et les conditions de radiomarquage. Enfin, un analogue comportant une fonction maléimide a été utilisé avec succès pour le marquage site spécifique de fragments Fab' du trastuzumab, ainsi que pour la fonctionnalisation de nanoparticules AGuIX. Ces bioconjugués et ces nanoparticules ont été soigneusement caractérisés et évalués dans des modèles biologiques pertinents afin de mettre en évidence leur intérêt comme agents théranostiques The objective of this thesis was to develop multifunctional tools for cancer theranosis, particularly based on nanotechnology. The work is based on the premise of monomolecular multimodal platform that aims to create the building blocks that can be used for the synthesis of functionalized nanoparticles, bioconjugates or targeted small molecular imaging probes.The initial work focused on the synthesis of the chelator based silane precursors. These novel precursors were employed for the functionalization of AGuIX nanoparticles and have also been implicated in a one pot AGuIX synthesis. Radiolabelling of these nanoparticles was performed with the aim to evaluate the stability of these nanoparticles under physiological conditions. Furthermore, these nanoparticles were investigated in TSA tumor model in order to evaluate their pharmacokinetics, biodistribution behaviour and value in PET-MRI imaging.In the second part of the work, building blocks/ligands have been developed and successfully deployed for the functionalization of gold nanoparticles. Multimodal ligands containing different combinations of chelators, targeting moieties, functional groups and dyes were synthesized. Gold nanoparticles for PET-MRI and PSMA targeting SPECT imaging were further radiolabeled (64Cu/111In) and showed excellent stability. PSMA targeting ligand exhibited good affinity towards PSMA, whereas the in vivo studies of the gold nanoparticles for PET-MRI in TSA tumor model demonstrated good pharmacokinetics properties, underscoring their potential in cancer imaging and radiotherapy.The latter half of the thesis work focusses on the development of PET-Optical probes for PSMA positive cancer targeting imaging using small molecular probes, and for bioconjugation to antibody fragments and nanoparticles. A PSMA targeting probe based on NODAGA and IR-783 dye has been developed and characterized for its affinity, photophysical and radiolabelling properties. Likewise, a similar probe bearing a maleimide handle has been successfully used for the site-specific labelling of trastuzumab Fab’ fragments and functionalization of AGuIX nanoparticles. These bioconjugates and the nanoparticles have been thoroughly characterized and evaluated in relevant biological models to highlight their value in cancer theranosis

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Holmgren, Justin Lee. "Secure computation on untrusted platforms." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/118082.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2018. Cataloged from PDF version of thesis. Includes bibliographical references (pages 171-176). In this thesis, we present two lines of research developing tools that, in addition to being of independent theoretical interest, yield improved protocols for secure out-sourcing of computation: Succinct Garbling Schemes. A garbling scheme is a way to encode a program P and input x as P̃̃ and x̃ such that P̃ can be evaluated on i to obtain P(x), but (P̃, x̃) reveals nothing more than P(x). We devise an efficient garbling scheme, based on the recent notion of indistinguishability obfuscation, in which the RAM running time and space usage of P on x are each the same as for P̃ on ,x̃. No-Signaling Multi-Prover Interactive Proofs. A multi-prover interactive proof (MIP) is a protocol by a which a "verifier" can ascertain the truth of a mathematical statement by interacting with two or more "provers" that cannot communicate with each other. We devise an MIP that achieves better efficiency and stronger soundness guarantees than previous constructions. In terms of efficiency, our MIP allows proving many statements with roughly the same (small) communication complexity as is required to prove a single statement. The soundness guarantee is that the verifier cannot be fooled even by malicious provers that can, in a very limited sense, collude in their messages to the verifier. The latter guarantee crucially enables an application to delegation of computation. Specifically, we obtain a protocol by which a weak device can outsource expensive computations to a powerful but untrusted server, while being assured that the computation is performed correctly. by Justin Lee Holmgren. Ph. D.

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Givens, Candace. "Technology Insertion on Satellite Platforms." Digital Commons at Loyola Marymount University and Loyola Law School, 2011. https://digitalcommons.lmu.edu/etd/396.

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Technology Insertion on Satellite Platforms is an interactive project created to provide a solution to a current operational problem at a large aerospace corporation. The particulars and details of which aerospace company requires the "fix" is not important. Providing a viable solution to address the identified white-space is the focus of this interactive project. This project will define a system engineering organization responsible for research, development and insertion of next-generation technologies. It will create an organizational architecture and operating model that institutionalizes technology evolution and strategic insertion on existing satellite platforms and bus architectures. It proposes to do this by creating a Technology Development organization. This organization will be responsible for internal research and development, technology insertion on existing development programs and teaming with new business acquisition teams to offer new technologies to customers. It will provide the processes and tools required to manage and achieve a long-range business plan. In addition, this project will provide the framework for creating and managing short-term capture plans, internal research and development prioritization, risk and financial management & reporting. The Technology Development organization will remove the stovepipes between the various entities and combine them into one collaborative organization. The team structure will ensure synergy and continuity across all aspects of the product development lifecycle. It will address the gaps in getting new concepts onto programs, ensuring the research and development teams are defining solutions for real problems, close the gap between payload and bus evolution and provide required solutions for business acquisition efforts.

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Biddlestone, Scott. "Collaborative Motion for Mobile Platforms." Thesis, The Ohio State University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3734570.

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In dense cluttered environments, autonomous physical agents will face many challenges including limited routes, obstructed sensors, and limited communication. Equipping the agents with inter-agent communication alleviates some of the issues, but providing a mechanism for forming groups allows the agents to work together efficiently by avoiding congestion in tight areas and providing redundancy to accomplish a task. This thesis presents a framework for decentralized collaborative group formations and a framework for augmenting that with a more strategic centralized approach. This thesis will investigate a strategy for the formation of hierarchical ad-hoc groups that provide a simple interface for joining and splitting groups. After formation these groups will use peer to peer algorithms to share sensor data and perform distributed task allocation within the group. The groups can either be controlled by a static base-station or use a decentralized framework if communication to the base-station is lost. When communication is restored, the peer to peer algorithms will be used to spread the data to as many agents as possible to avoid data loss. A radio propagation model is also presented to simulate communication in indoor and simulated environments, as well as estimated propagation for use in path planning. This framework will also allow the agent's high level decision making to modify its role depending on group consensus.

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Oikonomou, Antonios. "Novel nanocarbon based sensor platforms." Thesis, University of Manchester, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.644522.

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In the present thesis, research work to tackle challenges such as large-scale integration, selectivity and low efficiency around different types of nanocarbon based sensors is performed. The findings of these studies are given in the form of peer-reviewed publications and conclusions with future recommendations proposed as a summary. The work focuses on three key sensors types, gas sensors, biosensors and photodetectors. The first key aspect is dielectrophoretic (DEP) deposition of nitrogen doped single-walled carbon nanotubes (N-SWCNTs) and it is used as a route to large-scale assembly of increased reactivity, and thus selectivity, gas sensors. Furthermore, suspended SWCNTs and few layer graphene (FLG) devices are fabricated through a novel process which results in increased surface area transducers and low resistance SWCNTs based devices. Moreover, biosensors face similar challenges to gas sensors with the addition that their selectivity needs to be engineered through the formation of a biomimetic interface due to the nature of the analytes they are destined to investigate. Non-covalent functionalization of graphene using self-assembled phospholipid membranes delivered in a controlled and precise manner by dip-pen nanolithography (DPN) was demonstrated together with a high-speed fabrication process of bioassays onto patterned CVD graphene using a parallel tips system. Lastly, for the case of photodetectors, a SWCNT – nanoplasmonic system is proposed as a solution to the major issue of low quantum efficiency in low dimensionality materials. First, the performance of various geometries and arrangements of Au nanoparticles is explored by transferring a micromechanically exfoliated graphene flake onto them and studying the Raman enhancement that arises due to uncoupled and coupled near-fields. An increase of graphene Raman signal of 103 was observed for the areas suspended between two closely spaced dimers as a result of strong near field coupling when the polarisation of the incident light is parallel to the nanostructures axis. A large-scale integration of SWCNTs positioned in between the dimers using DEP is performed as a demonstration of the scalability of the system.

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Wang, Wenxing. "Development of microcantilever biosensing platforms." Thesis, Heriot-Watt University, 2013. http://hdl.handle.net/10399/2722.

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Microcantilever sensor system as a promising field attracted much attention recently. This system has the potential to be applied for a biosensing technology which is parallel reference, label free, sensitive and real time. In this thesis, polyimide has been selected as a material to fabricate cantilever due to its excellent physical, electrical and mechanical properties, on top of its cost advantage. Importantly, we showed it is feasible to microfabricate large array of microcantilever sensors with high-power UV laser directly. It is low cost and rapid, the parameters for laser direct writing fabrication has been studied. The thesis also shows that it is possible to functionalise the polyimide film first and subsequently cut it to functionalised cantilever sensor array. The unique fabrication and functionalisation process can solve the problem of high-cost microfabrication using silicon and low-efficient functionalisation using capillary tubing all together. In addition, the fabrication process has been further developed to avoid the problem of the cross contamination from receptors on both sides. With this improvement, we developed an internally referenced microcantilever biosensors system for DNA hybridization detection. Different receptors can be coated on each side of the polymer film before fabricating to cantilever biosensors This newly developed capability enables us to coat receptors with similar but slightly different biological properties on each side of the cantilever sensor, a process which is extremely difficult by using conventional capillary tubing methods due to the possibility of thiol exchange on surfaces and hence cross-contamination. A polyimide microcantilever sensor with embedded microfluidic channel has been developed in this thesis. Photoresist material is used to form the precise microfluidic channel within the microcantilever device. The multilayer polymer film device is still soft enough to operate in static mode. The main advantage of the system presented here is that since the device is made entirely of polymer materials, the fabrication process is simple and low-cost. The magnetic beads have been used to amplify the signal of the biosensing processing; the application of polyimide microfluidic microcantilevers to the detection of Cryptosporidium and thrombin is reported in this thesis. Paper based autonomous micocantilever system has also been investigated in this thesis. We build a cantilever system without external pump or force with paper and magnetic field. The limitation of the system is that it takes too much time to pump magnetic beads through the cantilever with capillary. However, we found that it has the potential to develop a long time range timer based on the slowest property. Different methods have been investigated to slow down the speed, when liquid pass through the paper microfluidic. Finally, we demonstrate some timer devices whose ranges are from minutes to month. The devices have the potential to be used as time-based diagnostic assays, food label, etc.

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Biddlestone, Scott Richard. "Collaborative Motion for Mobile Platforms." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1357227236.

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Casner, Benjamin. "Digital Platforms and Consumer Search." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1586791078220478.

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Morris, Thomas. "Private Computing on Public Platforms." Ann Arbor, Mich. : ProQuest, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3315256.

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Thesis (Ph.D. in Computer Engineering)--S.M.U. Title from PDF title page (viewed Mar. 16, 2009). Source: Dissertation Abstracts International, Volume: 69-06, Section: B, page: 3664. Adviser: Suku Nair. Includes bibliographical references.

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Becker, Alexander W. "Platforms of empowerment : an imaginarium." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/45276.

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Coêlho, de Araújo Cristiano. "Communication mapping in multiprocessor platforms." Universidade Federal de Pernambuco, 2005. https://repositorio.ufpe.br/handle/123456789/2098.

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Made available in DSpace on 2014-06-12T15:54:34Z (GMT). No. of bitstreams: 2 arquivo7168_1.pdf: 2138979 bytes, checksum: 19e8ea84018aa698112c01c9de47d857 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2005 Os avanços na tecnologia de fabricação de circuitos integrados tem permitido a implementação de sistemas inteiros em um único chip, combinando alto poder de processamento e baixo consumo em uma pequena área. Os chamados Multiprocessor System-on-Chip (MPSoc) incluem multiplos processadores heterogeneos, estruturas complexas de interconexão e componentes de propriedade intelectual fornecidos por terceiros. Esta tecnologia permitiu o surgimento de dispositivos portateis como telefones celulares, PDAs, dispositivos multimídia que combinam a portabilidade com a capacidade de antigos computadores desktop. Contudo, a especificação e validação destes sistemas se tornou uma tarefa muito difícil. Existe um gap entre a especificação do sistema em alto nível e a implementação em uma plataforma multirprocessador. Este gap entre a especificação e a implementação não é tratado de forma adequada pelas metodologias e ferramentas existentes. Tendo como consequencia atrasos no ciclo de desenvolvimento e erros que podem comprometer o projeto. Nesta tese é atacado o problema de implementação da comunicação modelada a nível de sistema em plataformas multiprocessadores. As contribuições deste trabalho são: (1) uma nova abordagem para a modelagem de plataformas multiprocessador; (2) uma metodologia para o mapeamento de comunicação na plataforma; (3) suporte de análise para avaliação da implementação da comunicação. As metodologias e ferramentas propostas foram validadas utilizando-se dois estudos de caso. O primeiro uma aplicação com múltiplas comunicações e o segundo uma aplicação multimídia

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Camerano, Cristoforo. "Technological platforms for immaterial art." Thesis, Universita' degli Studi di Catania, 2011. http://hdl.handle.net/10761/326.

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This work presents a project following a path from kinetic art to immaterial art through synchronization of dynamical systems. Two or several robots driven by a chaotic system follow irregular trajectories and their motions are coordinated. Then thanks to a pattern of lights the robots generate interesting images and patterns. In this way the viewer-user is invited to take an active role in the creation of this kind of immaterial art. The present work is organized as follow into seven chapters that cover R&D conducted at the DIEES department on several aspects related to the topic of Interactive Platforms for the creation of immaterial art. The thesis is divided into three important sections 1)Chaotic robots and kinetic art: Interaction between art and technology. This part shows the process of interaction between art and technology, and describes in details the realized platform and the obtained results. 2)From kinetic art to immaterial art through synchronization of chaotic robots. The realized platform for the synchronization of two robots is here described. The process of creation of art through the interaction between user and robot is also explained. 3)Mirror neurons robots: Learning synchronization and immaterial art. The research takes inspiration from the study of the applications on robotics of Mirror Neurons as principles of imitation and learning of movement. In this last section the principles of the learning synchronization between two robots are described. The realized platform for the creation of immaterial art through the interaction between user and mirror neuron robots is here described.

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RAVIGLIONE, FRANCESCO. "Open Platforms for Connected Vehicles." Doctoral thesis, Politecnico di Torino, 2022. https://hdl.handle.net/11583/2973988.

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CABIDDU, GIOVANNI. "Trusted Computing Platforms and Applications." Doctoral thesis, Politecnico di Torino, 2014. http://hdl.handle.net/11583/2538294.

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To create a trusted environment for program execution and data storage, the Trusted Computing Group (TCG) has introduced a set of technologies to create a Trusted Platform, based on a hardware trust anchor capable of protecting sensitive information and identifying the components running in a computer system. A Trusted Platform is built around a cost-effective and tamper-resistant hardware component called Trusted Platform Module (TPM). Although TPM is widely available, building a Trusted Platforms and Applications is not an easy task. This work wants to encourage the usage of Trusted Computing in commodity systems and propose the adoption of the Trusted Computing Technology in different applications which require the guarantee that information is handled correctly. The broad diffusion of Trusted Computing and Trusted Platforms in real life scenarios will allow mitigating software attacks and will allow users to increase confidence on their platforms.

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SARAGOZZA, SILVIA. "High-throughput antibody validation platforms." Doctoral thesis, Università del Piemonte Orientale, 2014. http://hdl.handle.net/11579/45955.

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Almeida, Ricardo Daniel Pacheco de. "When platforms team up : the role of strategic partnerships in the internationalization of digital platforms." Master's thesis, Instituto Superior de Economia e Gestão, 2020. http://hdl.handle.net/10400.5/20895.

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Mestrado em Economia e Gestão de Ciência, Tecnologia e Inovação O fenómeno das plataformas é central para o paradigma socioeconómico atual. Em poucas décadas, o modelo de negócio das plataformas conseguiu alterar fundamentalmente múltiplas indústrias. É um tópico que, embora extensivamente estudado pelos investigadores, ainda produz descobertas. O presente estudo pretende contribuir para esse esforço, explorando o papel das parcerias na internacionalização das plataformas digitais, dos pontos de vista da Gestão Estratégica e de Gestão de Negócios Internacionais. A questão de investigação sobrejacente a este estudo é formulada com base numa revisão de literatura sobre o modelo de negócio das empresas plataforma e o seu processo de internacionalização: Como é que os ecossistemas de plataforma locais são desenvolvidos e estabelecidos? Para responder a esta questão, é desenvolvido um caso de estudo explanatório com base em dois casos altamente contrastantes: a Microsoft Portugal e a Too Good To Go Portugal. Este trabalho descobre que as parcerias podem desenvolver ecossistemas de plataforma e criar oportunidades de negócio em mercados estrangeiros. As plataformas capacitam os seus parceiros com ferramentas e conhecimento por forma a desenvolver e enriquecer ecossistemas. O termo parceiro inclui múltiplas empresas a desempenhar diversos papéis, organizadas de forma hierárquica. As plataformas alavancam parcerias locais e, por vezes, internacionais, aumentando a competitividade local. Ainda assim, parcerias internacionais podem não se traduzir diretamente em parcerias locais. Finalmente, fatores como a credibilidade da empresa plataforma no mercado e o seu alinhamento estratégico com o contexto ético, social e ambiental, podem ter uma influência positiva na sua difusão em mercados e ecossistemas no estrangeiro. The platform phenomena is central to the contemporary socio-economic paradigm. In a few decades, the platform business model has managed to disrupt and fundamentally change multiple industries. Although this topic is being thoroughly studied by contemporary academia, it still yields discoveries. This research aims to contribute to that effort by exploring the role of partnerships in the internationalization of digital platforms, from the points of view of Strategic Management and International Business. It draws from a literature review on the platform business model and the internationalization process of platform firms to formulate an overarching research question: How are local platform ecosystems established and developed? To answer this question an explanatory case-study based on two highly contrasting cases: Microsoft Portugal and Too Good To Go Portugal is developed. This work finds that partnerships can develop platform ecosystems and create business opportunities in foreign markets. Platform firms invest and empower partners with tools and knowledge. Partner is a catch-all term that includes multiple firms playing diverse roles, organized in hierarchical fashion. Platforms can leverage on local and, sometimes, international partnerships to boost local competitiveness. Yet, international partnerships may not translate directly into local partnerships. Finally, factors such as the market credibility of the platform firm and its strategic attunement to the social, environmental, and ethical context may have a positive influence on platform diffusion in foreign user networks and ecosystems. info:eu-repo/semantics/publishedVersion

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Guzelis, Gediminas. "„Facebook“ platformos integracija korporatyvinėje komunikacijos strategijoje." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100302_131137-90290.

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Šiuolaikinėje verslo aplinkoje spartus skaitmeninių technologijų gausėjimas nulėmė integracijos procesus ne tik marketingo ar komunikacijos disciplinose ir jų sintezėje, bet ir visuose verslo procesuose. Efektyvus integruotos marketingo komunikacijos pritaikymas verslo aplinkoje yra vienas iš didžiausių verslo konkurencinių pranašumų rinkoje. Pažymėtina, jog nuoseklus šio konsepto pritaikymas versle padeda pasiekti didelį efektyvumą visų procesų atžvilgių įskaitant ir komunikaciją. Šio darbo temos suformulavimas ir problematika sumodeliuoti atsižvelgiant į sparčią komunikacijos disciplinos dinamiką ir transformaciją ne tik verslo pasaulyje, bet ir kultūrinėje bendravimo perspektyvoje. Šių procesų priežastis - eksponentiškai auganti technologijų inovacija, daranti įtaką visų sferų kaitai technokratinėje visuomenėje. Augančios žmonių auditorijos socialinių tinklų portaluose, besikuriančios naujos kultūrinės zonos, įtakojančios žmonių pirkimo sprendimus, ar įmonių finansinius rodiklius nulėmė verslo komunikacijos perskirstymą. Vienas iš šios komunikacijos revoliucijos įrankių – „Facebook“ socialinių tinklų portalas. Šis socialinių medijų įrankis per pastaruosius 6 metus augo dideliu tempu, ir 2010 metų pradžioje turėjo daugiau nei 350 milijonų narių. Prognozuojama, kad „Facebook“ socialinių tinklų portalas komunikacine ir marketingine prasme bus vienas patraukliausių ir efektyviausių per artimiausius metus, nes „Facebook“ įkūrėjo Mark Zuckerberg tikslas šiame tinklapyje turėti... [toliau žr. visą tekstą] This thesis was written in response to the growth of technology innovation on every single part of our daily life, including transformation of communication discipline, changing business rules; also it feels from the perspective of cultural communication changes. Furthermore, raising audiences in social networks websites creates new cultural groups, which influencing buying decisions of the ordinary people or financial numbers in business. The main tool is „Facebook“website of social network which revealed by this radical transformation of communication. This unique phenomenon is growing exponential in last six years and now it has 350 million accounts. In addition, “Facebook” will be one of the most efficient marketing and communication tools in several years with a population of 1 billion. This is the reason why this theme was chosen to this thesis, and the main concentration of this paper is “Facebook” integration in corporate communication strategy and effective administration. The purpose of this thesis is to explore reasons and value of „Facebook“ website integration in communication strategy of company, also create an analysis model, which helps to identify a specific communication activities by business units in „Facebook“ website. This paper covers the linkage of three main theory parts: integrated marketing communication, e-marketing, social media and social networks. The concept of integrated marketing communication is a base theory in this paper, which give a... [to full text]

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Mičiulis, Audrius. "Programinės įrangos kūrimo priemonių mobiliosioms platformoms tyrimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130821_152222-62508.

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Šiuo metu viena iš labiausiai bei sparčiausiai besivystančių technologijos krypčių yra mobiliesiems telefonams, planšetiniams kompiuteriams bei multimedijos įrenginiams skirta programinė įranga. Vartotojų susidomėjimas šia sritimi bei mobiliųjų įrenginių techninės įrangos tobulėjimas skatina vis daugiau IT kompanijų plėtoti savo veiklą šioje srityje. Viena iš didžiausių klaidų, kurias yra sunkiausia ištaisyti, yra pirminėje projekto stadijoje neteisingai pasirinktos technologijos. Šiame darbe apžvelgiamos ir palyginamos trijų populiariausių, į mobiliuosius įrenginius diegiamų operacinių sistemų: Android, iOS bei Windows Phone programų kūrimo sąsajos ir nustatomi jų privalumai bei trūkumai. Vertinimai yra atliekami atsižvelgiant į operacinės sistemos architektūrą, programų kūrimo įrankius, suderinamumą su technine įranga, programų derinimo galimybėmis, saugumo užtikrinimu, grafinės vartotojo sąsajos kūrimu, daugiakalbystės palaikymu, animacijos, garsų bei video medžiagos pateikimu, HTML turinio atvaizdavimu, integracija su žemėlapiais, vartotojo buvimo vietos nustatymu, sensorių bei tinklų pasiekiamumu, foninių procesų kūrimu, duomenų išsaugojimo bei apsikeitimo su kitomis programomis galimybėmis. Tyrimo metu nustatyta, kad Android turi geriausias sąsajas kurti foninius procesus bei integruotis su kitomis programomis. iOS turi geriausius įrankius bei grafinės vartotojo sąsajos kūrimo priemones, o Windows Phone turi patogiausia karkasą darbui su multimedija, žemėlapiais bei... [toliau žr. visą tekstą] At a present time, one of the most developing area of technology is software for mobile phones, tablets and multimedia devices. Growing numbers of users and improved hardware makes more and more companies to expand their activity in this market. One of the biggest mistakes, that is very hard to solve, is badly chosen technologies in a beginning stage of the projects. The main objective of this project is to compare three of the most popular operating systems Android, iOS and Windows Phone software development kits and to determinate their advantages and disadvantages. Analysis is made based on operating system architecture, tools, compatibility with hardware, debugging, security, graphical user interface, multilanguage support, animation, sounds, video, HTML preview, interaction with maps and user location, sensors, networks, background processes, data persistence and integration with another software. In this research was identified that Android has best interfaces to create background processes and share data between programs. iOS has best tools and components for graphical user interface and Windows Phone has best framework to work with multimedia, maps and user location services.

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Anumba, Eric Charles. "Xeero: A 3D Action-Puzzle-Platforming Game." Digital WPI, 2015. https://digitalcommons.wpi.edu/etd-theses/507.

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This report discusses the design and development of Xeero, a 3D action-puzzle-platforming game constructed from our own custom engine, original art and sound assets. Despite a small development team, we strove to create a highly-polished and marketable interactive experience. We explain the methodology employed, results gained, and challenges faced by each member of the team in pursuit of this goal.

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Acito, Daniel. "Xeero: A 3D Action-Puzzle-Platforming Game." Digital WPI, 2015. https://digitalcommons.wpi.edu/etd-theses/447.

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This report discusses the design and development of Xeero, a 3D action-puzzle- platforming game constructed from our own custom engine, original art and sound assets. Despite a small development team, we strove to create a highly-polished and marketable interactive experience. We explain the methodology employed, results gained, and challenges faced by each member of the team in pursuit of this goal.

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Morales, Narváez Eden. "Nanomaterials based microarray platforms for biodetection." Doctoral thesis, Universitat Politècnica de Catalunya, 2013. http://hdl.handle.net/10803/286742.

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Analytical disciplines are an important field for the progress of healthcare and medicine. In fact the technologies related to analytical disciplines may reveal important information for early diagnosis, treatment of diseases, food safety and environmental monitoring. In this regard, novel advances in analytical disciplines are highly desired. As a promising tool, biosensors are useful systems that enable the detection of agents with diagnostic interest. Since nanotechnology enables the manipulation and control at the nanoscale, biosensors based on nanotechnology offer powerful capabilities to diagnostic technology. In this dissertation, the advantages of the integration of nanomaterials into microarray technology are widely studied, generally in terms of sensitivity. Particularly, the performance of cadmium-selenide/zinc-sulfide (CdSe@ZnS) quantum dots (QDs) and the fluorescent dye Alexa 647 as reporter in an assay designed to detect apolipoprotein E (ApoE) has been compared. The assay is a sandwich immunocomplex microarray that functions via excitation by visible light. ApoE was chosen for its potential as a biomarker for Alzheimer's disease. The two versions of the microarray (QD or Alexa 647) were assessed under the same experimental conditions. The QDs proved to be highly e¿ective reporters in the microarrays, although their performance strongly varied in function of the excitation wavelength. At 633 nm, the QD microarray, at an excitation wavelength of 532 nm, provided a limit of detection (LOD) of ~62 pg mL-1, ¿ve times more sensitive than that of the Alexa microarray (~307 pg mL-1). Finally, serial dilutions from a human serum sample were assayed with high sensitivity and acceptable precision and accuracy (Anal. Chem. 2012, 84:6821). Since graphene oxide (GO) is a recently discovered nanomaterial and microarray technology relies on optical signals, the photonic properties of GO are discussed and the state-of-the-art of GO in optical biosensing has been widely documented (Adv. Mater. 2012, 24:3298). Furthermore, GO has been studied as a highly efficient quencher of QDs, reporting a quenching efficiency of nearly 100%. Finally, such interaction between GO and QDs has been proposed as a highly sensitive transduction system for microarray-based biodetection (Carbon 2012, 50:2987). This research aims at demonstrating how the endeavour of the fusion between nanomaterials and microarray technology exhibits enormous possibilities towards biomarker screening, food safety and environmental monitoring. Las tecnologías relacionadas con el diagnóstico son un campo importante para el progreso de la medicina y el cuidado de las salud. Por ejemplo, estas tecnologías pueden aportar valiosa información para el tratamiento y diagnóstico temprano de enfermedades, seguridad en alimentos y monitoreo del medio ambiente. En este contexto, los sistemas de biosensado son una herramienta muy prometedora que permite la detección de agentes con interés diagnostico. Dado que la nanotecnología facilita la manipulación y control a la nanoescala, los sistemas de biodetección basados en nanotecnología poseen poderosas capacidades que pueden ser explotadas en las tecnologías relacionadas con el diagnóstico. En esta tesisis se han estudiado las ventajas que aporta la integración de nanomateriales a la tecnología de microarrays, generalmente en términos de sensibilidad. Particularmente, se ha estudiado el desempeño de la integración de nanocristales semiconductores (NS) para la detección de un biomarcador relacionado con Alzheimer en formato microarray. En dicho microarray se ha observado un importante rendimiento, mostrando un excelente limite de detección de 62 pg mL-1, el cual supera a otros metodos convencionales de detección como el ELISA (470 pg mL-1). También se ha analizado un banco de diluciones de una muestra de suero humano con precisión y exactitud aceptables (Anal. Chem. 2012, 84:6821). Por otra parte, ya que el óxido de grafeno (OG) es un material muy novedoso y la tecnología de microarrays depende de señales ópticas, se ha documentado ampliamente el estado del arte sobre el uso de (OG) en en el campo del biosensado óptico (Adv. Mater. 2012, 24:3298). Adicionalmente, se ha estudiado al OG como un desactivador de fluorescencia de NS altamente eficiente, presentando una eficiencia en la desactivación de NS de casi el 100%. Finalmente se ha aplicado dicha interacción entre NS y OG para diseñar un sistema de transducción altamente sensible (Carbon 2012, 50:2987 ). Esta investigación tiene por objetivo demostrar las ventajas y el potencial que posee la fusión entre los nanomateriales y la tecnología de microarrays como un sistema aplicado al campo del diagnóstico

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Castells, i. Rufas David. "Scalable parallel architectures on reconfigurable platforms." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/369564.

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Els últims avenços en els sistemes reconfigurables han fet possible que les darreres famílies de FPGAs tinguin prou recursos per permetre la implementació de sistemes multiprocessadors utilitzant més de 100 nuclis (soft-core) en una única FPGA. En aquesta tesis presento com implementar solucions basades en aquests sistemes i dos escenaris on aquests sistemes tenen interès. Les FPGAs s’utilitzen cada vegada més en la computació d’altes prestacions ja que poden arribar a oferir més eficiència energètica que altres arquitectures com ara CPUs o GPGPUs. Tanmateix, la baixa programabilitat d’aquests sistemes, fruit de l’ús de llenguatges HDL és un inconvenient que limita la seva adopció. La introducció recent de fluxos de disseny per FPGA basats en OpenCL és un avenç per reduir la dificultat de programació, però malgrat tot, produeix arquitectures de propòsit específic que no poden reutilitzar-se per altres aplicacions a no ser que es reconfiguri la plataforma. Construint many-soft-cores que utilitzin acceleradors simples es poden aconseguir prestacions i eficiència energètica i tot i així, encara disposar d’un sistema útil per executar altres aplicacions. Per fer-ho possible les eines de disseny actual per FPGA s’han complementat per afegir suport per construir arquitectures many-soft-core, proporcionar models de programació paral·lels i mètodes eficients per analitzar i optimitzar els dissenys. Per altra banda, es mostra com els mateixos mètodes es poden utilizar per desenvolupar un sistema de temps real i alts nivells de seguretat mitjançant l’aïllament de tasques en els diferents nuclis del sistema. The latest advances on reconfigurable systems resulted in FPGA devices with enough resources to implement multiprocessing systems with more than 100 soft-cores on a single FPGA. In this thesis I present how to implement solutions based on such systems and I present two scenarios where those kind of sytems would be valuable. FPGAs are increasingly being used in HPC computing as they can bring higher energy efficiency than other alternative architectures such as CPUs or GPGPUs. However, the programmability barrier imposed by HDL languages is a serious drawback that limits their adoption. The recent introduction of OpenCL toolchains for FPGAs is a step towards destroying the barrier, but still produce application specific designs that cannot be reused for other general purpose computing unless the platform is reconfigured. Building many-soft-cores using simple hardware accelerators can bring performance and energy efficiency and still provide a general purpose system to be used for different applications. To make it possible the current FPGA toolchains has been complemented to add support for fast many-soft-core platform description, provide convenient parallel programming models, and efficient methods to optimize the designs. On the other hand I show how the same methods can be applied to implement a system using a task isolation approach to meet the requirements of a hard real-time safety critical system.

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Gössi, Thomas Gössi Thomas Gössi Thomas. "Computing platforms for parallel molecular dynamics /." Zürich, 2000. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13863.

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Klett, Oliver. "Electrochemical Aspects of Miniaturized Analytical Platforms." Doctoral thesis, Uppsala University, Department of Chemistry, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3297.

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This thesis ties some electrochemical aspects of development and fabrication of an analytical system on a microchip together. These aspects develop through the fundamentals of amperometric detection in microsystems and microfabrication via the interaction of electrochemical detection and electrophoretic separation finally to the interfacing of a microsystem to the macro world.Paper I deals with amperometric detection in microscale systems and describes the fabrication of the necessary on-chip microelectrodes together with fluidic channels in silicon. It was furthermore studied, if the interelectrode distance of some μm could be used to improve the sensitivity in amperometric detection by employing redox cycling. Papers II, III and IV deal with the effect of a high voltage field on amperometric detection. In analytical microdevices typically an electrophoretic separation step (e.g. capillary electrophoresis, CE) precedes the detection. The interference of the CE high voltage with the amperometric detection potential is often considered one of the main hindrances for an effective combination of these techniques. In paper II one reason for the observed disturbing potential shift was elucidated. It was shown that positioning of working electrode and reference electrode on an equipotiental surface eliminates this problem. Paper III reports an application of this technique. In paper IV it could be shown that this approach could further be used to significantly reduce the instrumental requirements for amperometric detection in CE.Papers V, VI, VII, finally discuss the interfacing of low volumetric flows that typically occur on microanalytical devices to other techniques. Both, interfacing from liquid to liquid phase (μLC to CE in paper V) and from liquid to gas phase (CE to MS in paper VI and VII) were discussed. Electrochemical methods are used in this context to evaluate the stability and, in paper VI and VII, to increase the understanding of underlying processes of corrosion.

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Ele, Abraham Y. "Dynamics of ships and floating platforms." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/27879.

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Three dimensional angular motions of ships and floating platforms are investigated using Euler's dynamical equations. The solution of Euler's equations predict two new oscillatory motions, namely roll and pitch together with a constant yawing or turning-rate. Unlike classical roll and pitch the new motions have a common period of oscillation which depends on the characteristics of the ship and the magnitude of the turning-rate. The possibility that gyroscopic coupling between rolling and pitching induce yawing is considered for unpowered platforms sitting in oblique regular waves. The rotational kinetic energy shows that for some sea states, there could be a non trivial turning-rate which minimizes the peak energy so that the platform rolls and pitches while turning at a constant-rate. Resonance takes place when the frequency of the wave coincides with the frequency of the coupled motions in still water. For ships maneuvering in regular waves, there are infinite combinations of the turning-rate and the frequency of the wave which could cause resonance. Damping, however small it may be, considerably reduces the amplitude at resonance. Regardless of its orientation with respect to the direction of wave propagation, simple rolling or pitching of an unbalanced body is not possible, instead, there is a combined roll-pitch motion having a common frequency, which does not appear to have been investigated previously. Applied Science, Faculty of Mechanical Engineering, Department of Graduate

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Parisot, Clément. "Generic Hardware Description for Embedded Platforms." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187356.

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On the area of microcontrollers, a firmware is traditionally built for a very specific hardware configuration. Without special design, there is little chance that the same firmware will run on several hardware platforms with a different sets of peripherals. But running the same firmware on different hardware configurations could have some benefits. It could allow a manufacturer or a sensor network manager to deploy the exact same firmware on all its nodes regardless of their hardware. It would greatly simplify the firmware management, and thus the update process. We know that such a system is possible on larger architectures, such as x86 or even ARM, but in this thesis we target smaller architectures. The typical target here is a sensor network node, running on a very low-power microcontroller. No generic system currently exists to allow a firmware to run on several hardware configurations of this type. In this thesis we present a new generic hardware description system that specifically targets small devices. This system can be integrated with existing frameworks or operating systems for embedded systems so that the firmware can adapt to the hardware it is running on. We show that it is possible by presenting a demonstration prototype using our hardware description system.

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Welch, C. S. "Servicing polar platforms using electric propulsion." Thesis, Cranfield University, 1992. http://hdl.handle.net/1826/3435.

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The future of space development has been examined in the context of the infrastructure necessary support it. It is concluded that the selection of propulsion systems for in-orbit transportation requires the development of general computer codes capable of simulating the use of a wide range of propulsion systems on near-Earth missions. It is also concluded that, even if limited infrastructural development occurs, polar orbiting spacecraft will be an important feature of future space activities. Replacing current single-use polar spacecraft with extended-life serviceable platforms is attractive. However, the very limited manned access polar orbits in the mid-term future suggests that such platforms will only be possible if remote telerobotic/autonomous servicing can be carried out. To this extent polar platforms are considered to provide a useful driver and first testbed for the development of technologies designed to extend human capability in those regimes where direct mediation is not possible. Options for such remote servicing are examined, the concept of performing nodal transfers by enhanced differential nodal drift is introduced and the application of electric propulsion to this discussed. Low-thrust orbital manoeuvres are analyzed in this context and the conditions for optimum nodal transfer defined. Particular service vehicle configurations are then defined against a projected infrastructure and baseline polar platform constellation. A model for the service vehicle is defined and its performance investigated using a number of electric propulsion systems. Simulations of transfer manoeuvres; have been carried out and the effects and relative importance of the various orbit perturbations identified. It is concluded that a service vehicle propelled by a Xenon ion system offers the capability required and two final configurations are identified characterising different servicing mission upload schemes.

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Kim, Hyojun. "Informed storage management for mobile platforms." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45768.

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Storage devices are rapidly changing, and we need to adapt the OS storage software stack to keep up with the changes. Such a re-evaluation of the storage software stack is especially required for mobile platforms because they are relying on inexpensive flash storage devices having very different performance characteristics from the familiar hard disk.In this thesis work, we first show the importance of storage in mobile platforms; contrary to conventional wisdom, we find evidence that storage is a significant contributor to application performance on mobile devices. Then, we explore the solution space for flash storage; user-level library for selective logging, host-side write buffering layer, and OS buffer replacement scheme for flash storage have been studied. Finally, we build an integrated solution for smartphone storage, named Fjord. In the Fjord study, we re-design logging and RAM buffering solutions for smartphones, and also propose fine-grained reliability control mechanisms. We prove that non-volatile logging can improve storage performance remarkably. Understanding the characteristics of cloud-backed applications and controlling the reliability constraint for chosen cloud-backed applications can achieve additional significant performance gain.We implement and evaluate our solution on a real Android smartphone, and demonstrate significant performance gains for everyday apps on such platforms.

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Meger, David Paul. "Visual object recognition for mobile platforms." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44682.

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A robot must recognize objects in its environment in order to complete numerous tasks. Significant progress has been made in modeling visual appearance for image recognition, but the performance of current state-of-the-art approaches still falls short of that required by applications. This thesis describes visual recognition methods that leverage the spatial information sources available on-board mobile robots, such as the position of the platform in the world and the range data from its sensors, in order to significantly improve performance. Our research includes: a physical robotic platform that is capable of state-of-the-art recognition performance; a re-usable data set that facilitates study of the robotic recognition problem by the scientific community; and a three dimensional object model that demonstrates improved robustness to clutter. Based on our 3D model, we describe algorithms that integrate information across viewpoints, relate objects to auxiliary 3D sensor information, plan paths to next-best-views, explicitly model object occlusions and reason about the sub-parts of objects in 3D. Our approaches have been proven experimentally on-board the Curious George robot platform, which placed first in an international object recognition challenge for mobile robots for several years. We have also collected a large set of visual experiences from a robot, annotated the true objects in this data and made it public to the research community for use in performance evaluation. A path planning system derived from our model has been shown to hasten confident recognition by allowing informative viewpoints to be observed quickly. In each case studied, our system demonstrates significant improvements in recognition rate, in particular on realistic cluttered scenes, which promises more successful task execution for robotic platforms in the future.

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Mahdavi, Adrian. "Value Added Services and Content Platforms." Thesis, KTH, Mikroelektronik och Informationsteknik, IMIT, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-93112.

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Value-Added Services and Content Platforms (VAS and Content platforms) was carried out with in a group with same name at Tele2 AB in Kista, Stockholm. This group is responsible for network design, capacity planning, dimensioning, Acceptance testing (ATP test), and introducing of new functionality in Tele2's VASplatforms. Acceptance testing is performed on new devices (servers and other network components) in order to verify their capacity and performance guaranteed by their manufactures. Every platform has a guaranteed upper bound performance (based on the license a buyer has paid for), measured by different approaches. For instance for Short Message Service Center (SMSC) platforms, the measurement is based on the maximum number of SMS messages processed per second (SMS/sec), for Multimedia Messaging Service Center (MMSC) platforms the metric is the maximum number of MMS messages processed per second (MMS/sec), and for WAP Gateways it is the maximum number of WAP Transactions Per Second (TPS). This M.Sc. thesis project involved creating two graphical load generators for load testing of SMSC and MMSC platforms. These application-programs are not allowed to occupy unnecessary resources, or cause additional traffic on the radio network (when they are deployed), but they must be powerful enough in order to send and receive traffic in order to derive statistical data about the system's performance. This data will be used for behavioral analysis of these systems, and finally for verifying the guaranteed capacities. These tests are very important and decisive for service providers, who want to be able to offer good quality of service, guarantee availability, and offer reliability. In order to measure the performance and verify the guaranteed performance, two main scenarios were of great importance: Sending 5 messages per second during a interval of 5 minutes. This case will simulate a TV-contest in which the TV audiences submit messages to a predefined number in order to join the contest. Sending 3 Multimedia Messages per second during 30 minutes (for the MMSC performance measurement), and 7 SMS-messages per second during 120 minutes (for the SMSC performance measurement). This case attempts to simulate the traffic that will be generated in the minutes before and after Christmas or New Year. For behavioral analysis and performance measurement of the MMSC and the SMSC platforms an Open Queueing Network model is employed. In this model each server system is considered as a network, consisting of nodes, where each node represents one component inside the system. By considering each node as a single-server queueing system we can take advantage of queueing theory in order to drive several performance results.

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Ahmadi-Nedushan, Behrooz 1966. "Progressive collapse analysis of offshore platforms." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22639.

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This thesis presents a study of the ultimate strength capacity of two offshore platforms located in the Gulf of Mexico. The objective of the study was to validate existing non-linear finite element models for estimating the loads and strength of offshore platforms. From August 24 to 26 1992, hurricane Andrew moved through the Gulf of Mexico with sustained winds of 140 miles per hour. Thirty-six major platforms suffered significant damage, of these, ten were completely toppled and twenty-six were leaning significantly or had significant topside damage. Structures "H" and "K" were bridge-connected platforms, located in the ST151 field of the South Timbalier area of the Gulf of Mexico, platform "H" collapsed during Andrew, while "K" survived undamaged. They were both designed, fabricated, and installed in the early 1960's. A push-over analysis, using the program USFOS was used to estimate the ultimate strength of the two structures in three direction: end-on, diagonal and broadside. In the first series of analyses, all the primary members such as legs, vertical and horizontal braces, piles, soil, conductors and deck structure were precisely defined with appropriate finite elements as well as secondary members such as conductors guides barge bumpers. In the second series of analyses it was assumed that there was no horizontal or vertical movements at the level of the mudmat. In the third series of analysis the model used in the first series of analysis was modified by increasing stiffness and resistance of the piles 10 times. Finally a fourth model was investigated in which the soil resistance of the mud-level horizontal members is modelled. (Abstract shortened by UMI.)

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Lopes, Rui Jorge H. C. "New platforms for interactive multimedia services." Thesis, Lancaster University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.431458.

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Rosén, Olov. "Parallel Stochastic Estimation on Multicore Platforms." Doctoral thesis, Uppsala universitet, Avdelningen för systemteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-246859.

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The main part of this thesis concerns parallelization of recursive Bayesian estimation methods, both linear and nonlinear such. Recursive estimation deals with the problem of extracting information about parameters or states of a dynamical system, given noisy measurements of the system output and plays a central role in signal processing, system identification, and automatic control. Solving the recursive Bayesian estimation problem is known to be computationally expensive, which often makes the methods infeasible in real-time applications and problems of large dimension. As the computational power of the hardware is today increased by adding more processors on a single chip rather than increasing the clock frequency and shrinking the logic circuits, parallelization is one of the most powerful ways of improving the execution time of an algorithm. It has been found in the work of this thesis that several of the optimal filtering methods are suitable for parallel implementation, in certain ranges of problem sizes. For many of the suggested parallelizations, a linear speedup in the number of cores has been achieved providing up to 8 times speedup on a double quad-core computer. As the evolution of the parallel computer architectures is unfolding rapidly, many more processors on the same chip will soon become available. The developed methods do not, of course, scale infinitely, but definitely can exploit and harness some of the computational power of the next generation of parallel platforms, allowing for optimal state estimation in real-time applications. CoDeR-MP

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Williams, Rob. "Cetacean studies using platforms of opportunity." Thesis, University of St Andrews, 2003. http://hdl.handle.net/10023/2836.

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As human impact on marine ecosystems continues to grow, so too does the need for sound conservation and management strategies that are informed by science. Cetaceans, the whales, dolphins and porpoises, epitomise this challenge, because they are hard to study, they have been heavily exploited in the past, and because some of their habitats, behaviours and life-history strategies make them acutely vulnerable to human activities. Unfortunately, research on free-ranging cetaceans in remote areas is costly, and financial resources are limited. The approach used in this thesis to acquire inexpensive quantitative information on cetacean populations and behaviour was to seek out platforms of opportunity. Tourism and environmental education projects provided access to remote areas of importance to cetaceans. The topic was explored in two main areas. First, studies were conducted to investigate the use of ships of opportunity in estimating distribution and abundance, namely of Antarctic baleen whales. The second area of interest was the effect of boats on killer whales in the northeast Pacific. Platforms of opportunity proved valuable for collecting data to model the role of measurement error on abundance estimation. Measurement error was found to be a potential source of bias in four distance estimation experiments. Platforms of opportunity could be used to train observers on protocols, and to learn to use range- finding photogrammetric equipment well before conducting dedicated surveys, which would eliminate this source of bias, as well as estimating abundance in some cases. Abundance and distribution of three whale species were modelled using data collected aboard Antarctic tourist ships. Spatial modelling techniques were used to model distribution of minke, fin and humpback whales using line-transect data collected from a survey that could not be randomised. Strong gradients in animal density were predicted, which could be used to inform future surveys. In the meantime, rough estimates of abundance were obtained, and this approach shows promise for other areas where lack of resources makes systematic surveys prohibitively expensive. A government-funded environmental education project provided logistical support for two studies that dealt with effects of boats on killer whale behaviour. One quantified the extent to which a particular style of whalewatching was disruptive to whale behaviour, and commercial whalewatchers agreed to halt this activity. The other found that a protected area conferred benefit to killer whales, even though it protects only a fraction of the whales' habitat for a fraction of the year. The thesis contains four case studies that illustrate how inexpensive methods may be used to obtain practical quantitative information to aid decision-making about conservation and management of wild cetaceans that interact with (i.e., whalewatching), compete with (i.e., fishing) or are exploited by (i.e., whaling) humans.

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Uddin, Abul Hasnat Md Zakir. "Product platforms: influencing factors and effects." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-152408.

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The product platform strategy is well known for its several positive effects. However, these effects differ under different market situations. Several product platform projects related decisions can influence these effects. This research work will show how these effects are influenced by decisions under different market situations, findings will help academics in enriching product platform theories and, it will help managers to take proper decisions to enhance the possibility of product platform project success.

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Shi, Yongjiu. "Dynamic behaviour of guyed tower platforms." Thesis, Heriot-Watt University, 1989. http://hdl.handle.net/10399/958.

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