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Gasmi, Assia. "Effet de la nanostructuration sur le comportement thermomécanique du Nitinol". Electronic Thesis or Diss., Université de Montpellier (2022-....), 2024. http://www.theses.fr/2024UMONS018.
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La présente thèse s’intéresse à l'alliage à mémoire de forme NiTi, en se concentrant sur l'influence du procédé de nanostructuration superficielle SMAT sur son comportement thermomécanique. À travers quatre chapitres distincts, elle rappelle les principales caractéristiques des alliages à mémoire de forme (AMF), mettant en avant les propriétés exceptionnelles de l'alliage NiTi, et explorant le traitement de nanocristallisation superficielle (SMAT). La caractérisation microstructurale est ensuite approfondie, notamment en étudiant les effets du traitement thermique de recuit et du SMAT sur la transition de phase. Le troisième chapitre se concentre sur les méthodes d'analyse thermomécanique adaptées au NiTi, en examinant les essais de traction et de nanoindentation. Enfin, le quatrième chapitre analyse la caractérisation thermomécanique de l'alliage avant et après le traitement SMAT, mettant en évidence les implications de ces transformations sur son comportement global.La thèse contribue à la compréhension des effets du procédé SMAT sur l'alliage NiTi, révélant des liens entre la microstructure, les phases présentes et les propriétés mécaniques. Les résultats ouvrent des perspectives prometteuses pour la meilleure maîtrise des propriétés de l'alliage NiTi.Les résultats obtenus pour différents traitements SMAT montrent que ce procédé modifie la réponse mécanique du matériau. Elle a aussi une influence sur son état initial, comme l’illustrent les différences dans les courbes de DSC. Les mesures cinématiques (champs de vitesses de déformation) et calorimétriques (champ de source de chaleur) indiquent aussi l’apparition de différences notables dans les réponses en fonction des paramètres de traitement SMAT. L'exploration du comportement lors de cycles de charge/décharge montre une réponse qui se stabiliser après quelques cycles. Les effets de couplage semblent être prépondérants par rapport aux effets dissipatifs. Ces observations devraient être étendues à des chargements en fatigue afin de mieux mettre en évidence les éventuels effets dissipatifs. De même, l’utilisation de modèles d’interprétation plus élaborés permettrait de mieux tenir compte des effets de structure et d’enrichir la compréhension de la relation entre le procédé et les évolutions des propriétésThis thesis focuses on the shape memory alloy NiTi, with a specific emphasis on the influence of the surface nanostructuring process SMAT on its thermomechanical behavior. Through four distinct chapters, it revisits the main characteristics of shape memory alloys (SMAs), highlighting the exceptional properties of the NiTi alloy and exploring the surface nanocrystallization treatment (SMAT). Microstructural characterization is then deeply investigated, particularly by studying the effects of annealing heat treatment and SMAT on phase transition. The third chapter focuses on thermomechanical analysis methods suitable for NiTi, examining tensile tests and nanoindentation. Finally, the fourth chapter analyzes the thermomechanical characterization of the alloy before and after SMAT treatment, highlighting the implications of these transformations on its overall behavior.This thesis contributes to understanding the effects of the SMAT process on the NiTi alloy, revealing links between microstructure, present phases, and mechanical properties. The results offer promising perspectives for better control of the properties of the NiTi alloy.The results obtained for different SMAT treatments show that this process modifies the mechanical response of the material. It also has an influence on its initial state, as illustrated by differences in DSC curves. Kinematic (strain rate fields) and calorimetric (heat source field) measurements also indicate notable differences in responses depending on SMAT processing parameters. Exploration of behavior during load/unload cycles shows a response that stabilizes after a few cycles. Coupling effects seem to be predominant compared to dissipative effects. These observations should be extended to fatigue loading to better highlight any dissipative effects. Similarly, the use of more elaborate interpretation models would allow better consideration of structural effects and enrich the understanding of the relationship between the process and property evolutions
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PERRUCCI, FRANCESCO. "High Performance & Smart Manufacturing". Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2712640.
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Additive Manufacturing can be considered as one of the key factors for sustainable economic growth, increasing competitiveness and innovative technology with the potential to transform global manufacturing industry, to influence the environmental impact and to change the European economies. In recent years, 3D printing has grown rapidly and has shown great potential in various application fields: from bioengineering, to microfluidics and electronics. There is a growing interest for 3D printing focused on the production of functional structures. The possibility to obtain functional elements by 3D printing, such as batteries, antennas, membranes, sensors etc. is one of the key points of the evolution of this technology. Research on new kinds of printable materials and the ability to control and predict their performance are essential to achieve broader use of 3-D printing. Engineered materials, specifically studied for being 3D printable and exhibiting optimized properties and multifunctionality, will provide intense potential and opportunities in a myriad of applications, resulting in better functionality of the manufactured device (e.g, biocompatibility, electrical conductivity, optical response, chemical sensitivity, mechanical behaviour...) coupled with improved printability. The main approaches in the evolution of 3D printable materials consist in working with multiple materials or nanocomposites to create new combinations that have unique properties expanding the range of 3D printable objects. This Ph.D research activity on High Performance & Smart Manufacturing has been held in Materials and Micro Systems Laboratory of Politecnico di Torino (ChiLab) and in collaboration with Microla Optoelectronics S.r.l. First, a study of Additive Manufacturing techniques, already on the market, was performed. Then the optimization of a stereolithographic printing machine was carried out. One part of the PhD research was based on the study of new smart materials, with intrinsic features that can give to the printed objects a concrete function. For this purpose, functionalized photosensitive polymers, realized by Politecnico di Torino, were used to build 3D structures. Also aromatic polymers were laser processed with the aim to make them conductive and, in the future, reliable for additive manufacturing processes. A further and important task during the PhD activity was the integration of stereolithographic processes both at micro and nanoscale. This important task was possible thanks to the fruitful collaboration with the Laser Zentrum of Hannover (LZH - Germany). At LZH laboratories, a two-photon polymerization (2PP) set-up allowed the fabrication of different nano-structures for microfluidic application. The first attempt was the fabrication of a nano-filter printed directly inside a micro-channel outlet as published in “3D printed suspended micro-filter integrated in a printed microfluidic channel”. This work, once established the process feasibility, may lead to an interesting application in Bioanalytics for the sieving of extracellular vesicles of endocytic origin.
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Roberto, Miguel Augusto Inácio. "Smart & Simple Business Solutions (SSBS)". Master's thesis, NSBE - UNL, 2010. http://hdl.handle.net/10362/10319.
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Colby, Edward Grellier. "A smart biosensor". Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368100.
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Akhlaq, Muhammad. "A Smart-Dashboard : Augmenting safe & smooth driving". Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-6162.
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Annually, road accidents cause more than 1.2 million deaths, 50 million injuries, and US$ 518 billion of economic cost globally. About 90% of the accidents occur due to human errors such as bad awareness, distraction, drowsiness, low training, fatigue etc. These human errors can be minimized by using advanced driver assistance system (ADAS) which actively monitors the driving environment and alerts a driver to the forthcoming danger, for example adaptive cruise control, blind spot detection, parking assistance, forward collision warning, lane departure warning, driver drowsiness detection, and traffic sign recognition etc. Unfortunately, these systems are provided only with modern luxury cars because they are very expensive due to numerous sensors employed. Therefore, camera-based ADAS are being seen as an alternative because a camera has much lower cost, higher availability, can be used for multiple applications and ability to integrate with other systems. Aiming at developing a camera-based ADAS, we have performed an ethnographic study of drivers in order to find what information about the surroundings could be helpful for drivers to avoid accidents. Our study shows that information on speed, distance, relative position, direction, and size & type of the nearby vehicles & other objects would be useful for drivers, and sufficient for implementing most of the ADAS functions. After considering available technologies such as radar, sonar, lidar, GPS, and video-based analysis, we conclude that video-based analysis is the fittest technology that provides all the essential support required for implementing ADAS functions at very low cost. Finally, we have proposed a Smart-Dashboard system that puts technologies – such as camera, digital image processor, and thin display – into a smart system to offer all advanced driver assistance functions. A basic prototype, demonstrating three functions only, is implemented in order to show that a full-fledged camera-based ADAS can be implemented using MATLAB.Phone# 00966-56-00-56-471
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Zambrano, Némesis K. "KID smART & Any Given Child – New Orleans". ScholarWorks@UNO, 2016. http://scholarworks.uno.edu/aa_rpts/204.
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This internship report is an overview of KID smART and the fiduciary responsibility it provides to the citywide arts education initiative Any Given Child - New Orleans (AGCNO). I began my 480-hour internship with KID smART in February 2015 to work on getting AGCNO off the ground. The following report combines on-site observational research, expertise I developed from my educational training, and independent research to provide an analysis of KID smART and AGCNO’s current position, strengths, weaknesses, opportunities, and threats. Additionally, this report provides recommendations on how to address specific issues with operational management in order for AGCNO to establish independence and sustainability.
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Srivastava, Vikash Umeshchandra. "Smart Antennas & Power Management in Wireless Networks". Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/31244.
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The proliferation of wireless ad-hoc networks especially wireless LAN (IEEE 802.11b Standard) in the commercial market in recent years has reached a critical mass. The adoption and strong support of wireless IEEE 802.11 standard, coupled with the consequent decline in costs, has made wireless LAN deployment as one of the fastest growth area in communication access technology. With the ever increasing use of wireless LAN technology the various networks are reaching their full capacity in terms of network throughput, number of users and interference level in the wireless channel.
In this thesis work I propose to the use smart antenna technology and a power management scheme in the wireless ad-hoc networks to increase the network capacity in terms of throughput, number of simultaneous communication and to lower the average transmit power and consequently co-channel interference. Power management scheme can be used to maximize the power efficiency of the transmitter by choosing an optimum transmit power level. Smart antenna or adaptive antenna array technology has reached a level of sophistication that it is feasible to use it on small mobile terminals like handheld PDA, LAPTOP and other mobile devices with limited battery power.
The simulation results of various ad â hoc network scenario shows that there are significant gains to be had if these technologies can be integrated in the existing wireless LAN physical layer and/or in the standard them self. Smart antennas along with slight modification in channel access scheme reduce co-channel interference dramatically and increases the number of simultaneous transmissions hence improves network throughput. Power management algorithm is shown to improve average transmission of a node.
We present a mathematical framework to characterize the outage probability of cellular mobile radio system with selective co-channel interference receiver in overloaded array environments. The mathematical framework outlines a general numerical procedure for computing the probability of outage of a cellular mobile radio system that is equipped with a smart antenna to suppress a few strongest co-channel interferers (CCI) out of a total of NI active interferers by null steering.Master of Science
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Abad, Zapata Rafael, Carpio David Dávila, Huayamares Andrea Miranda, Velezmoro Carmen Rincón e Ruiz Jackeline Torres. "Plan de negocios: 3S Smart Salon & SPA". Master's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2014. http://hdl.handle.net/10757/651687.
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3S Smart Salón & Spa es un salón de belleza y spa dedicado al cuidado de las mujeres de 25 a 45 años del NSE AB que viven en Lima Moderna, poniendo a su disposición un ambiente armonioso con soluciones tecnológicas para mantener y mejorar la imagen personal de sus clientes y eliminar el estrés. 3S busca que la mujer sienta bienestar, descanso, cuidado de su cuerpo, rostro y cabello y que además pueda encontrar elementos electrónicos que puedan incrementar su experiencia de servicio con el respaldo de equipos modernos de alta tecnología y productos de calidad de las marcas más reconocidas del sector de salones de belleza y spa.
La necesidad de este tipo de servicios surge debido a que la imagen se ha convertido en un factor decisivo en el mundo de hoy, tomando gran importancia tanto en el ámbito social como personal y laboral de las personas. Las mujeres buscan cada vez verse y sentirse bien. Esto alineado al constante avance tecnológico da como resultado el primer salón de belleza tecnológico del Perú, en el cual se minimiza el riesgo de un cambio de look pudiendo ver el resultado antes de realizarse un cambio irreversible, acompañado del ambiente tecnológico de la infraestructura y otros elementos que serán parte de la plataforma tecnológica del local.
La fidelidad de las clientas y la atracción de nuevas, se captará a través de nuestro servicio diferenciado y constante actualización tecnológica, siendo consistentes en la calidad del servicio brindado con un staff altamente calificado, acompañado de un plan de marketing vía internet, redes sociales, medios y eventos.Tesis
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Xavier, Mariana Sofia Rosa de Brito. "Smart Homes no mercado downstream de Oil & Gas". Master's thesis, FEUC, 2016. http://hdl.handle.net/10316/30736.
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Relatório de estágio do mestrado em Economia (Economia Industrial), apresentado à Faculdade de Economia da Universidade de Coimbra, sob a orientação de Maria Rita Vieira Martins e Ricardo Clérigo.O presente relatório insere-se no âmbito do estágio curricular integrado no Mestrado em Economia da Faculdade de Economia da Universidade de Coimbra, realizado no período de 1 de setembro a 7 de dezembro de 2015, na área de Smart Homes, Automatic Meter Reading (AMR) and Machine-to-Machine (M2M) platform da empresa ISA – Intelligent Sensing Anywhere, S.A.. O objetivo deste relatório consiste na apresentação das principais variáveis que influenciam a adoção de produtos Smart Homes nos distribuidores de gás, assim como, na identificação e análise das características relevantes para a definição do modelo de negócio conducente à colocação de uma nova gama de produtos da ISA no mercado global, tendo uma maior incidência nos mercados considerados estratégicos para a empresa, nomeadamente, EUA, Canadá e Europa. Desta análise conclui-se que novas tendências têm emergido no mercado de Gasóleo de Petróleo Liquefeito (GPL), tornando a fidelização de clientes um aspeto crítico para as utilities de Oil & Gas. Neste contexto, e como forma de inovar o seu portefólio, a ISA desenvolveu uma solução na área de Smart Homes para o mercado de Oil & Gas, com o intuito de se diferenciar face à concorrência. Elaborou-se um Business Model Canvas para o novo produto da ISA, tendo em consideração duas perspetivas (retenção e aquisição de clientes). O objetivo passou por estudar qual a melhor estratégia a ser utilizada pelos clientes da ISA para que estes consigam endereçar, de um modo diferenciador, o seu mercado residencial. Deste modo, a ISA tem a preocupação não só de servir o seu cliente, mas também de evidenciar o melhor modo de interação com o consumidor final. Este tipo de interação é designado por Business-to-Business-to-Consumer (B2B2C). Concluiu-se, a partir da análise dos dois Business Model Canvas, que a abordagem a ter relativamente à aquisição e retenção de clientes é muito semelhante, embora pareça preferível que as empresas optem por focar-se na retenção dos seus clientes, já que a aquisição de um novo cliente pode envolver um elevado custo.
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Pettersson, William. "An Evaluation of IoT Protocol Efficiency and suitability : For smart vehicles, smart homes & industrial scenarios". Thesis, Mittuniversitetet, Institutionen för informationssystem och –teknologi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-42392.
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Internet of things (IoT) är det överläggande området i denna rapport. IoT är ett väldigt intressant I nuläget och är snabbt växande. IoT kan beskrivas som ett nätverk av kommunicerande enheter som delar information och automatiserar eller försimplar uppgifter och därav ökar effektivitet och säkerhet. Området växer så pass fort att det förväntas vara 24 miljarder anslutna enheter vid år 2050, denna utökning leder i sin tur till ett ökat behov av förståelse för IoT protokollen som hanterar kommunikationen emellan enheterna. Detta för att kunna välja det mest optimala protokollet för ett givet scenario. Detta arbete kommer att välja ett lovande protokoll för undersökning samt evaluering gällande dess prestation berörande fördröjning, dataöverföringshastighet och skalbarhet. Protokollet som valdes var MQTT (Message Queuing Telemetry Transport). Baserat på dessa evaluerade värden föra en diskussion gällande protokollets lämplighet inom scenariona. Värdena kommer att tas fram via tidmätningar start till slut för kommunikationen samt tid för att skicka en mängd meddelanden, båda i respekt till antalet samtidigt kommunicerande program. Testen körs med en lokal PC som agerar Broker och en Raspberry Pi som kör samtliga programmen i individuella terminaler. Resultaten var att fördröjningen verkar ha en näst intill linjär relation och dataöverföringshastighet ett exponentiellt avtagande beteende i respekt till samtidigt kommunicerande enheter. Dem mätta resultaten analyseras och diskuteras, och kommer till slutsatsen att protokollet är en lämplig kandidat för de flesta scenarion, så som smarta bilar, smarta hem och till viss del industriell användning. Den största nackdelen med protokollet var dess höga standardavvikelse gällande individuella meddelandens fördröjning.Internet of things (IoT) is the base topic of this thesis, and it is a rapidly growing area, it can be described as a network of communicating devices sharing information and streamlining tasks in addition to increasing efficiency and security. It is expected to be 24 billion connected devices by year 2050 and with this growth comes an increased demand on understanding the IoT protocols to be able to choose a suitable protocol for a given scenario. This thesis will discuss this area and pick one protocol to evaluate specifically regarding latency, throughput, and scalability. The protocol chosen were MQTT (Message Queuing Telemetry Transport). Based on these values then discuss whether the protocol is a suitable candidate for the scenarios. The data to evaluate this will be gathered by measuring the end-to-end time of the protocol in respect to the number of communicating programs, and to measure the time it takes to communicate a number of messages with respect to the number of programs handling the communication. These tests are performed with a local PC acting as the broker and a Raspberry pi running each of the communicating programs on individual terminals. The results were that latency seem to have a close to liner relation, and that throughput seem to have an exponentially decreasing relation with respect to number of clients cooperating. The measured results are analyzed and discussed and concluded that the protocol is a fitting candidate for most scenarios such as smart cars, smart homes and to some extent industry. The biggest flawed concluded was the protocols high standard deviation for individual messages latency. The outcome of the benchmarks measurement showed that increasing the number of nodes would not result in superior performance. It was noted that an optimal number of nodes was found to be between 1 and 20 for all the tests performed. The study showed that no load balancer could be considered a clear winner, instead, different configurations of load balancers performed varyingly well at different tests.
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Ulker, Fatma Demet. "Active Vibration Control Of Smart Structures". Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/4/1098409/index.pdf.
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The purpose of this thesis was to design controllers by using H1 and ¹control strategies in order to suppress the free and forced vibrations of smart structures. The smart structures analyzed in this study were the smart beam and the smart ¯
n. They were aluminum passive structures with surface bonded PZT (Lead-Zirconate-Titanate) patches. The structures were considered in clamped-free con¯
guration. The ¯
rst part of this study focused on the identi¯
cation of nominal system models of the smart structures from the experimental data. For the experimentally identi¯
ed models the robust controllers were designed by using H1 and ¹
-synthesis strategies. In the second part, the controller implementation was carried out for the suppression of free and forced vibrations of the smart structures. Within the framework of this study, a Smart Structures Laboratory was established in the Aerospace Engineering Department of METU. The controller implementations were carried out by considering two di®
erent experimental set-ups. In the ¯
rst set-up the controller designs were based on the strain measurements. In the second approach, the displacement measurements, which were acquired through laser displacement sensor, were considered in the controller design. The ¯
rst two °
exural modes of the smart beam were successfully controlled by using H1 method. The vibrations of the ¯
rst two °
exural and ¯
rst torsional modes of the smart ¯
n were suppressed through the ¹
-synthesis. Satisfactory attenuation levels were achieved for both strain measurement and displacement measurement applications.
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Becker, Ulrike. "Smart Surfaces in Biobased Materials". Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/30714.
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The self-assembly blends of cellulose propionate (CP) and fluorine (F)-containing cellulose derivatives was examined on a model system of solvent cast films. The F-containing derivatives were either high molecular weight statistical cellulose esters with a number of F-containing substituent evenly distributed along the backbone (F-esters), or F-terminated CP-segments with exactly one F-containing endgroup. The F-esters were synthesized in a homogeneous phase and identified by 19F-NMR. Thermal analysis showed improved thermal stability of the F-esters when compared to F-free derivatives.
1-monohydroxy functionalized CP-segments were synthesized by HBr depolymerization using either a commercially available CP with residual OH-groups or a perpropionylated CP (CTP). The hydrolysis using the commercial CP yielded only segments of a minimum DP of 50 and the Mark-Houwink constant declined from 1 to 0.6. The results indicate that in the presence of free hydroxyls branches are formed by transglycosidation. The hydrolysis from perpropionylated CP resulted in segments with a minimum DP of 7, which is in accordance to previous studies.
F-terminated CP segments were synthesized by coupling of the appropriate F-containing alcohol to the CP segment via toluene diisocyanate.
Solutions containing F-terminated CP-segments showed typical critical micelle behavior. The critical micelle concentration depended on the molecular weight of the CP segment and the type of F-containing endgroup. The micelles are thought to consist of a core of the F-endgroups and a corona made-up of CP. Films containing the oligomers cast from micellar solution revealed a linear decrease in wetting force according to the blend composition of the oligomer, i.e. behavior according to the rule of mixing. This indicated the absence of surface segregation of the F-endgroup and it is explained with the fact that the micellar structure is retained in the solid state, suppressing surface segregation. The solid state micelles were visualized as dome-like protrusions by height image atomic force microscopy. In systems blended with CP the distance between the protrusions was found to increase with increasing CP content which was explained by a dilution process.
Films containing F-esters were characterized by wetting force measurements and x-ray photoelectron spectroscopy (XPS). The wetting force decreased dramatically at low blend content of the F-ester and at the same time an F surface-concentration higher then expected from the blend composition was found by XPS. This indicated self-assembly by surface segregation of the F-containing species during film formation. The extent of surface segregation was found to depend on the type of the F-ester group as well as on the blend concentration of the F-ester.
Dynamic wetting force measurements revealed hysteresis in films containing either F-esters or F-terminated CP segments. The hysteresis was found to be both kinetic (water sorption and reorganization) and thermodynamic (surface roughness and surface coverage with F-moieties) in nature. Consecutive force loops revealed an increase in the wetting force (advancing and receding) with increasing loop number, indicating the increased hydrophobicity of the surface. The force increase was determined to be due to water sorption as well as due to surface reorganization. An increase in the size of the F-groups signified a decrease in reorganization rate due to a decreased mobility of the group. The process of reorganization was fully reversible, a behavior which is congruent with the definition of smart behavior.Ph. D.
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Maloš, Martin. "IS-Innovation fokussiert auf Utility-Marktsegment". Doctoral thesis, Vysoká škola ekonomická v Praze, 2003. http://www.nusl.cz/ntk/nusl-77149.
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This thesis addresses the innovation of information systems in enterprises, particularly in the utility market segment. The thesis starts with a definition of utilities, a market segment containing companies involved in generation, transmission, distribution and retail of energy services as well as other companies providing related networked services. The aims of this thesis are both theoretical and practical. The theoretical part offers a new theory for IS innovations for the selected segment and for the relation between the innovation and the architectures of IS. In the practical part, the author identifies current challenges and opportunities in the selected market segment and offers scenarios and visions for future development. The first part of the thesis maps out the general innovation theories in the context of the selected topic. The second part introduces a new innovation theory based on an analysis of the specific conditions in the utility market segment. The next section focuses on the topic of IS architecture and its ability for tracking and managing the changes of the IS during the innovation process. The following part relays designs for specific architecture models supporting the current innovation trends in the utility market. The final part of the thesis summarizes particular business recommendations for innovation procedures in utilities, identifies innovation opportunities, and inspires visions for the future development of the market. The opportunities are related to a new way of understanding the role of IS in utility companies. IS provides a portfolio of information services to support the customer oriented business services, advanced services with added value and tailor made services for specific customer groups.
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Davies, Jayne Louise. "Electrorheological fluids as smart medicines with potential in controllable drug delivery". Thesis, University of Bath, 1999. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301535.
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Haneberg, Dominik. "Sicherheit von Smart-Card-Anwendungen /". Berlin : Logos-Verl, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016072399&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Ben, Rayana Rayene. "A smart management framework for multihomed mobile nodes & mobile routers". Télécom Bretagne, 2010. http://www.theses.fr/2010TELB0130.
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Le paysage du monde des télécommunications a beaucoup changé ces dernières années. Les nouveaux mobiles, dits de quatrième génération, sont dotés de plusieurs interfaces de communication afin de mieux exploiter les différents réseaux d'accès disponibles. La prochaine étape : utiliser la multi-domiciliation, ou multihoming, pour exploiter cette diversité et assurer une connectivité fiable et peu onéreuse. Cependant, plusieurs problématiques résultent de l'utilisation simultanée de plusieurs réseaux : la consommation d'énergie, préoccupation majeure des équipementiers; l'augmentation du coût, pour la facturation à la durée; le choix des réseaux les plus “utiles” à un moment donné. . . Cette thèse décrit SmartMob6 : une architecture de gestion de la mobilité qui se propose de résoudre ces problématiques. Un algorithme de décision détermine les réseaux les plus “utiles” et désactive les interfaces inutilisées afin de préserver l'énergie et réduire les coûts. Pour le calcul dynamique de l'utilité d'un réseau, l'algorithme combine les besoins en QoS et en sécurité des flux avec les caractéristiques du réseau. La décision prend en compte les préférences de l'administrateur et celles des opérateurs. Si la demande dépasse le niveau de ressources disponibles, l'architecture propose l'utilisation d'applications adaptatives qui réduisent leur besoins en fonction des conditions. Dans ce manuscrit, nous appliquons ces idées à la mobilité IPv6 (Mobile IPv6, NEMO) dans le cadre des transports intelligents (ITS); nous exposons les résultats d'évaluation sur plate-forme réelle et nous présentons NetPyLab : Un simulateur développé afin de tester l'architectureMobile communication technologies are now moving toward full heterogeneity support. Fourth-generation mobile devices incorporate multiple interfaces with diverse access technologies. The next step: derive benefit from this heterogeneity to ensure a ubiquitous and inexpensive access to mobile devices through multihoming. However, being multihomed is intrinsically complicated. It raises several issues such as energy overconsumption, additional usage costs and it strongly motivates the proposal of decision mechanisms to choose the « right » access networks among the available ones. This thesis describes SmartMob6: A mobility management framework that addresses these issues. A decision algorithm selects the most « useful » networks and proposes to deactivate the unused interfaces to save energy and money. For the dynamic evaluation of a network utility, it suggests to combine the flow's QoS and security requirements with the network characteristics. Flows are distributed over the remaining interfaces with respect to their compatibility and their priority. This decision takes into account high-level policies coming from the administrator and also from operators as well as ISPs. In addition, the framework supports adaptive applications: When the resource level decreases, applications are asked to reduce their expectations to ensure a minimal service level. In this manuscript, we adapt these ideas to the contexts of IPv6 Mobility (Mobile IPv6, NEMO) and Intelligent Transportation Systems (ITS); we present the results of a testbed experimentation and we introduce NetPyLab: a simulator developed to test the framework
17
Beussink, Andrew. "Preserving Consumer Privacy on IEEE 802.11s-Based Smart Grid AMI Networks". OpenSIUC, 2014. https://opensiuc.lib.siu.edu/theses/1383.
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While the newly envisioned smart grid will result in a more efficient and reliable power grid, its use of fine-grained meter data has widely raised concerns of consumer privacy. This thesis implements a data obfuscation approach to preserve consumer privacy and assesses its feasibility on a large-scale advanced metering infrastructure (AMI) network built upon the new IEEE 802.11s wireless mesh standard. This obfuscation approach preserves consumer privacy from eavesdroppers and the utility companies while preserving the utility companies' ability to use the fine-grained meter data for state estimation. The impact of this privacy approach is assessed based on its impact on data throughput and delay performance. Simulation results have shown that the approach is feasible to be used even when the network size grows. Additional adaptations to the approach are analyzed for their feasibility in further research.
18
Brown, Martin Timothy. "Implementation of a smart imaging system incorporating neural networks". Thesis, University of York, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316213.
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Lee, Young-Sup. "Active control of smart structures using distributed piezoelectric transducers". Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324821.
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Breitenmoser, Andreas. "Titanic smart objects". Zurich : ETH, Swiss Federal Institute of Technology, Department of Information Technology and Electrical Engineering, Electronics Laboratory, 2007. http://e-collection.ethbib.ethz.ch/show?type=dipl&nr=433.
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Nisar, Kashif. "DC to DC converter for smart dust". Thesis, Linköpings universitet, Institutionen för systemteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-77247.
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This work describes the implementation of DC to DC converter for Smart Dust in 65 nm CMOS technology. The purpose of a DC to DC converter is to convert a battery voltage of 1 Vto a lower voltage of 0.5 V used by the processor. The topology used in this DC to DC converteris of Buck type which converts a higher voltage to lower voltage with the advantage of givinghigh efficiency about 75%. The system uses PWM (Pulse width modulation) technique. It usesnon-overlapping clock generation technique for reducing the power consumption. The systemprovides up to 5 mA load current and has power consumption of 2.5 mW.
22
Göransson, Scalzotto Joel. "It´s The Smart City, Stupid! : A critical study of Smart narratives, Attraction Hysteria & the production of Smart Space in the European Green Capital 2020". Thesis, Stockholms universitet, Kulturgeografiska institutionen, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-182392.
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In this research, the “Smart City-edifice” of Lisbon has been examined through qualitative field work carried out in the city. The concept of the Smart City- edifice has been designed by the author in an attempt to grasp the ambiguous Smart City ambition as an assemblage of (i) specific techniques incorporated into the urban environment (ii) the modes of governance which these techniques allow for, particularly real time data collection & (iii) issues of city branding, placemaking and urban, Smart regeneration. The highlighted empirical material has been produced in collaboration with interlocutors from three different projects, and relate to the three different facets of the Smart Cityedifice: A developer of a gamification scheme (e-governance), a sustainable neighbourhood project (Tech-driven sustainability and governance/civic participation) and lastly a creative hub (branding, creativity & regeneration). These facets are being examined in the context of Lisbon, a city which has gone through a re-formulation of urban agendas in the capitalist restructuring of the economy in the wake of the 2008 financial crisis. The post-crisis strategy in Lisbon is interpreted as a sort of “attraction hysteria” (Anttiroiko, 2014), as much effort has been placed on attracting global capital and tourism, incentivised not least by a liberalized, profitable housing market. This attraction hysteria is understood by the author as producing specific implications for the development of the Smart Cityedifice. Main findings include the hinderances that said politics have produced for ambitions of civic participation and other democratic visions of the Smart City. These findings are understood in the light of the Lefebvrian framework of the “right to the city” and critical understandings of the touristified city. The field work itself has been guided by two key research questions, these being: a) How are Smart City narratives being operationalized locally by actors in Lisbon? B) What possible tensions could arise between Smart aims of global urban competitiveness and aims of civic participation, in the context of Lisbon?
23
Darus, Zabani. "Cost-effectiveness of smart schools and traditional secondary schools in Malaysia". Thesis, University of Birmingham, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274304.
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Beginning in 1999,81 public secondary schools have been transformed into "Smart Schools" in Malaysia. Smart schools utilise computers and technology based teaching and learning approaches. Tight public budget constraints mean the policy must also be cost effective in terms of academic and social outcomes. By using at the perspective of government and household expenditure, the study attempts to compare the cost effectiveness of students' progress in the Smart schools and the other secondary schools in the Northern State of Malaysia. 404 Form 4 students in year 2000 were randomly selected from 11 Smart and 11 Traditional secondary schools in Penang, Kedah and Perlis. School and individual students level data were collected by questionnaire survey. Recurrent costs, academic and social effectiveness and cost effectiveness ratios were estimated using an ingredients approach and multilevel modelling techniques. The findings show that Smart schools are more socially cost effective and less academically cost effective, except for English, than Traditional schools. There was no difference of cost effectiveness between rural and urban schools. Teacher costs dominated school costs. A characteristic of cost effective Smart schools for expansionw as suggested.F inally, directions for future researcha re discussed
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Celikkaya, Esma Burcu. "Children'". Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613670/index.pdf.
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The aim of the thesis is to find out children&rsquos expectations from smart products that enhance their learning and analyze their conformity with the state of art smart products and educational technologies. The developments in technology affect many dimensions including education. There are many studies that aimed to improve the learning process by the help of technology. However, the perspective of children considering this topic is almost absent in the literature. Therefore, expectations of children from learning technologies are explored via an empirical study. The state of art smart technologies and products to enhance learning will also be covered. Then, in the light of an empirical study, to what extent children&rsquo
s expectations overlap with current technologies will be presented.
25
Olegård, Johannes. "Security & Forensic Analysis of an Internet of Things Smart Home Ecosystem". Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-289579.
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The Internet of Things (IoT) is an ongoing trend where a multitude of internet- connected devices become more common. Many of these devices have easily exploitable security vulnerabilities. This has led to large-scale cyberattacks such as the Mirai botnet Distributed Denial of Service (DDOS) attacks. More cybercrime can be expected in the future, especially as the number and types of IoT devices grow. In this work, the security of an IoT ecosystem was investigated from two perspectives: security testing and Digital Forensics (DF). Security testing was used to search the Application Programming Interfaces (APIs) of the IoT ecosystem for security vulnerabilities. Three Static Application Security Testing (SAST) Tools were used to search the source code of the cloud part of the system. A manual review was done to search the system as whole, with the guide of common vulnerability lists from the Open Web Application Security Project (OWASP). As a result, severe security vulnerabilities were found. A DF experiment was conducted where actions were taken in five Android smartphone apps to control six IoT devices (two are from aforementioned IoT ecosystem). The contents of the smartphone was then examined for forensic evidence of those actions. Additionally the contents one of the IoT devices was also examined for evidence. It was concluded that only limited evidence of the actions could be found. Additionally, various challenges were identified.Det så kallade Sakernas Internet (eng. Internet of Things, IoT) området är en pågående och ökande trend. Trenden handler om att olika enklare enheter ansluts mot internet i stort antal. IoT-enheter har utsatts för, och utnyttjats i, cyber attacker som i exempelvis det så kallade “Mirai botnet”. Allt fler IoT-relaterade brott kan förväntas i framtiden, speciellt eftersom antalet IoT- enheter blir allt fler och mer diversifierade. I den här uppsatsen undersöks säkerheten i ett IoT ekosystem utifrån två aspekter: “security testing” (säkerhetstesting) och “digital forensics”. På svenska kalls digital forensics för “IT-forensik” (kriminalteknik inom informationsteknik) eller digital-forensik. Säkerhetstestning användes för att hitta sårbarheter i det undersökta IoT ekosystemets olika applikationsprogrammeringsgränssnitt. Tre olika verktyg av typen Static Application Security Testing (SAST) användes i undersökningen för att granska den kod som motsvarar moln-delen av systemet. Utöver de tre verktygen, undersöktes systemet också manuellt. Den manuella undersökning utgick från de listor av vanliga typer av sårbarheter som finns publicerade av organisationen Open Web Application Security Project (OWASP). Resultatmässigt hittades flera allvarliga sårbarheter i systemet. Digital forensics-delen av projektet bestod av ett experiment där en Android telefon, sex IoT-enheter (två från det ovannämnda IoT ekosystemet) och fem motsvarande Android-appar undersöktes. Experimentet bestod av att utföra olika handlingar i apparna (till exempel att skicka ett kommando till en IoT- enhet), och sedan av att leta bevis för de handlingarna. För att hitta bevis undersöktes innehållet på telefonen och innehållet på en av IoT-enheterna. Slutsatsen av experimentet är att bara få och begränsade bevis kunde hittas. Utmaningarna som påträffades i experimentet jämfördes med utmaningarna beskrivna i forskningslitteraturen inom digital forensics.
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Aragón, Altarriba Eric. "Smad binding codes broken by WW domain containing proteins = Desxifrant els codis d’unió a Smad de les proteïnes amb dominis WW". Doctoral thesis, Universitat de Barcelona, 2013. http://hdl.handle.net/10803/129809.
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Cell fate is controlled by a multitude of signals and loss of this control has devastating consequences for living organisms. One of the key players in this network of signals is the TGF-beta family of cytokines. These hormones trigger an immense amount of responses by sending activated Smad transcription factors (Sma and Mad related proteins) to the nucleus where participate in the control of stem cell pluripotency and differentiation, embryo development, tissue regeneration, and differentiated tissue homeostasis (Massagué, 1998).
According to their function, Smad proteins are classified as receptor regulated Smads (R-Smads), which include Smads 1, 5 and 8 in the BMP-driven version of the SMAD pathway, and Smads 2 and 3 in the TGF-beta/ Nodal/Activin pathways. R-Smads form complexes with the common co-activator Smad (Co-Smad) Smad4. The SMAD family also contains the two inhibitory Smads (I-Smads), Smad6 and Smad7, which provide critical negative regulation to these powerful and ubiquitous pathways.
All Smad proteins are modular (Shi and Massagué, 2003). R-Smads and the Co-Smad consist of two Mad Homology MH1 and MH2 domains connected by a linker that functions as a scaffold upon which other proteins can interact and modulate the functional outcome. This linker contains a conserved cluster of phosphorylation sites adjacent to a PY motif. MH1 domains of R-Smads and Smad4 bind to DNA, whereas the MH2 domain and the linker function as scaffolds for receptors, regulator proteins, and transcription cofactors to interact and determine the outcome of the signal (Shi and Massagué, 2003). Compared to R-Smads and Co-Smads, the I-Smads have low sequence similarity in the MH1 domain but conserve an MH2 domain and a linker region with a characteristic PY motif. The presence of the common regions facilitates the competition of R-Smads and I-Smads for the receptor and ligands and it facilitates the inhibitory role of I-Smads (Figure 1). I-Smads are expressed in response to TGF-β or BMPs to provide negative feedback in the pathway (Bai and Cao, 2002; Hata et al., 1998; He et al., 2002; Kavsak et al., 2000; Nakao et al., 1997; Yan and Chen, 2011) and in response to other pathways such as STAT to oppose TGF-β signaling (Ulloa et al., 1999). Smad6 interferes with the formation of Smad1-Smad4 complexes (Hata et al., 1998) whereas Smad7 interferes with the formation of R-Smads-Smad4 complexes and inhibits TGF-β and BMP receptors (Hayashi et al., 1997; Topper et al., 1998).
Several key phosphorylations drive the Smad signaling process. The ligand cytokines activate receptor serine/threonine protein kinases that phosphorylate Smad proteins at the C-terminus. The BMP receptors act on Smads 1, 5 and 8 and the receptors for the TGF-beta /nodal/activin/myostatin group of ligands act mainly on Smads 2 and 3 (Shi and Massagué, 2003). The phosphorylated C-terminus provides a binding site for Smad4, which is an essential component in the assembly of target-specific transcriptional complexes. These phosphorylations are reversed by protein phosphatases that limit the general pool of activated Smad molecules (Inman et al., 2002; Lin et al., 2006; Schmierer et al., 2008; Xu et al., 2002).
27
Karagöz, Hande. "Urban Space Recreation for Pedestrians through Smart Lighting Control Systems". Thesis, KTH, Ljusdesign, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-231836.
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Connected public lighting for more sustainable and liveable cities is highly demanding research in lighting design field through human centred design approach. While following this understanding, this thesis aims to answer the question “How a networked public lighting can be created in order to enhance the needs of the pedestrians in Fredhällspark?”. To investigate this study, a background research was studied in the relevant topics of urban lighting, followed by the study of human safety regarding to this topic and lastly the possible new lighting technologies. The main study is involved in a pedestrian path at Fredhällspark in Stockholm, Sweden, in two months duration in the spring time of 2018 by conducting user surveys and taking the lighting measurements. Based on the results the study showed, a lighting design proposal is developed with a site-specific approach in order to make it up-to date and sustainable for future urban environments while complying with the requirements of the users.
28
Philips, Gavin R. "Expanding smart wheelchair technology for users with severe disabilities". Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1663116631&sid=2&Fmt=2&clientId=18949&RQT=309&VName=PQD.
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Retting, Kelsey Nicole. "Smad proteins and the regulation of endochondral bone formation". Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1666396551&sid=5&Fmt=2&clientId=1564&RQT=309&VName=PQD.
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Cakmak, Ozan. "PRIVACY PRESERVATION IN A HYBRID MULTI MESH-LTE AMI NETWORK FOR SMART GRID". OpenSIUC, 2015. https://opensiuc.lib.siu.edu/theses/1720.
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While the newly envisioned Smart(er) Grid (SG) will result in a more efficient and reliable power grid, its collection and use of fine-grained meter data has widely raised concerns on consumer privacy. While a number of approaches are available for preserving consumer privacy, these approaches are mostly not very practical to be used due to two reasons: First, since the data is hidden, this reduces the ability of the utility company to use the data for distribution state estimation. Secondly and more importantly, the approaches were not tested under realistic wireless infrastructures that are currently in use. In this thesis, a meter data obfuscation approach to preserve consumer privacy is proposed to implement that has the ability to perform distribution state estimation. Then, its performance on LTE and a large-scale Advanced Metering Infrastructure (AMI) network built upon the new IEEE 802.11s wireless mesh standard are assessed. LTE/EPC(Evolved Packet Core) model is used between the gateway and the utility. EPC's goal is to improve network performance by the separation of control and data planes and through a flattened IP architecture, which reduces the hierarchy between mobile data elements. Using obfuscation values provided via this approach, the meter readings are obfuscated to protect consumer privacy from eavesdroppers and the utility companies while preserving the utility companies' ability to use the data for state estimation.The impact of this approach on data throughput, delay and packet delivery ratio under a variety of conditions are assessed.
31
Yoh, Allison C. "Institutional issues in the adoption of smart card systems among U.S. transit agencies for fare collection". Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1720820011&sid=13&Fmt=2&clientId=1564&RQT=309&VName=PQD.
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Hamadache, Kahina. "Smart & Seamless Collaboration : bringing pervasive computing to the Computer Supported Collaborative Work". Thesis, Lille 1, 2011. http://www.theses.fr/2011LIL10032/document.
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Ces travaux de thèse apportent une contribution aux domaines de l’informatique pervasive et du travail collaboratif assisté par ordinateur. Nous explorons ces domaines par une présentation étendue de différents travaux se rapportant aux modèles de collaboration, aux différentes conceptions ainsi qu’aux méthodes d’évaluation. Notre principale contribution pour ces domaines est le modèle PCSCW, qui propose une approche originale pour l’intégration de l’aspect pervasif au sein de la collaboration. En se basant sur un modèle ontologique représentant le contexte des utilisateurs ainsi que sur un ensemble de règles de collaborations entres machines, notre travail permet aux dispositifs intelligents d’analyser et de trouver la meilleure façon de se comporter et de collaborer avec les autres machines de l’environnement afin de canaliser et de faciliter de manière transparente et efficace la collaboration entres les humains. Nous proposons également une méthodologie permettant aux développeurs de systèmes collaboratifs pervasifs de construire leurs propres stratégies d’évaluationsThis thesis work contributes both in the pervasive computing and computer supported collaborative work domains. We explore these domains by an extended presentation of related works concerning models, designs and evaluation methods. Our main contribution for these areas is the PCSCW model, which proposes an original approach to the integration of the pervasive aspect inside the collaboration. By relying on an ontological model representing users’ context and a set of devices collaboration rules, our work enables smart devices to analyse their context and find the best way to behave and collaborate with other devices of the environment in order to seamlessly and efficiently channel and facilitate the collaboration of humans. We also propose a methodology allowing collaborative systems’ developers to build their own evaluation strategies
33
Daniela, Rosić. "Model kontrole pristupa u Smart Grid sistemima". Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104820&source=NDLTD&language=en.
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U tezi je analiziran problem kontrole pristupa u Smart Grid sistemima. Formalno je specificiran model kontrole pristupa za Smart Grid koji je zasnovan na unapređenju i proširenju RBAC modela i koji je usklađen sa aktuelnim zahtevima u elektroenergetskoj industriji. Postavljena je softverska arhitektura predloženog modela kontrole pristupa, čija je prototipska implementacija zatim integrisana u simuliranom Smart Grid okruženju.This thesis discusses the challenges related to access control in SmartGrid systems. A formal model for access control in the Smart Grid isspecified, extending the role-based access control (RBAC) model to bein accordance with the existing security requirement in the power industry.Based on the proposed access control model, software architecture wasdeveloped and its prototype implementation is integrated in a Smart Gridsimulated environment.
34
Sinn, Thomas. "Smart deployable space structures". Thesis, University of Strathclyde, 2016. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28327.
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Nowadays, space structures are often designed to serve only a single objective during their mission life, examples range from solar sail for propulsion over shields for protection to antennas and reflectors for communication and observation. By enabling a structure to deploy and change its shape to adapt to different mission stages, the flexibility of the spacecraft can be greatly increased while significantly decreasing the mass and the volume of the system. Inspiration was taken from nature. Various plants have the ability to follow the sun with their flowers or leaves during the course of a day via a mechanism known as heliotropism. This mechanism is characterized by the introduction of pressure gradients between neighboring motor cells in the plant’s stem,enabling the stem to bend. By adapting this bio-inspired mechanism to mechanical systems, a new class of smart deployable structures can be created. The shape change of the full structure can be significant by adding up these local changes induced by the reoccurring cell elements. The structure developed as part of this thesis consists of an array of interconnected cells which are each able to alter their volume due to internal pressure change. By coordinated cell actuation in a specific pattern, the global structure can be deformed to obtain a desired shape. A multibody code was developed which constantly solves the equation of motion with inputs from internal actuation and external perturbation forces. During the inflation and actuation of the structure, the entities of the mass matrix and the stiffness matrix are changed due to changing properties of the cells within the array based on their state and displacement. This thesis will also give an overview of the system architecture for different missions and shows the feasibility and shape changing capabilities of the proposed design with multibody dynamic simulations. Furthermore, technology demonstrator experiments on stratospheric balloons and sounding rockets have been carried out to show the applicability and functionality of the developed concepts.
35
Broms, Arvid, e Olsson Simon Liljenberg. "Data-driven Decision-making for Efficient & Sustainable Production". Thesis, KTH, Industriell ekonomi och organisation (Inst.), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297504.
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As a result of digitalization, previously analog systems in the manufacturing industry have become digitalized, including the decision-making processes. Companies are, therefore,becoming more dependent on data for strategic decisions. However, because of the rapid development of digitalization, companies are left blindfolded in the path towards smarter manufacturing which often leads to unsuccessful technological implementations. Therefore, the thesis will explore this problem by asking: What are the required initiatives for successfully implementing digital data-driven decision-making to improve efficiency and sustainability by Swedish manufacturing companies? To answer the research questions, an exploratory multiple case study approach was conducted, where interviews with informants from the industry as well as researchers within the context of smarter manufacturing were made. The findings were then used to derive propositions which worked as the foundation of a conceptual model which functionality would be to illuminate the results in the form of a strategy map. Findings suggest that it is not always necessary for companies to implement technologies linked to large investments to enable digital data-driven decision-making. However, for those that do, there needs to be a clear organizational plan and agenda before executing theprojects since they otherwise often lead to insufficient results. That means, the technological aspects are often not the culprit in failed digital data-driven decision-makingprojects. Additional findings suggest that there are synergies connected to digital data-driven decision-making such as data-sharing possibilities that have the potential of becoming a major aspect within the context of sustainability and efficiency.Som ett resultat av ökad digitalisering har analoga system i tillverkningsindustrin blivit digitaliserade, vilket inkluderar beslutsfattandet. Företag har därför börjat förlita sig alltmer på data för sina strategiska beslut. Men på grund av den snabba utveckling av digitalisering har tillverkningsföretagen lämnats utan klara riktlinjer för hur de bör gå tillväga för att implementera digitalt datadrivet beslutsfattande på ett effektivt men hållbart sätt. Avhandlingen kommer därför att undersöka detta problem genom att fråga: Vilka är de initiativ som krävs för att framgångsrikt implementera digital datadrivet beslutsfattande med målet att förbättra effektiviteten och hållbarheten hos svenska tillverkningsföretag? För att svara på forskningsfrågorna användes en undersökande metod med flerafallstudier, där intervjuer gjordes med informanter från industrin såväl som forskare inom ramen för smartare tillverkning. Resultaten användes sedan för att härleda förslag som därefter användes till konstruktionen av en konceptuell model vars huvuduppgift var att illustrera resultaten i form av en strategikarta. Slutsatserna pekar på att det inte alltid är nödvändigt för företag att implementera teknik kopplad till stora investeringar för att möjliggöra digitalt datadrivet beslutsfattande. Men för de som valt att implementera sådana system behövs en tydlig organisationsplan innan projekten genomförs eftersom de annars ofta leder till ofördelaktiga resultat. Detta tyder på att de tekniska aspekterna oftast inte är vad som orsakar misslyckade datadrivna beslutsprojekt. Dessutom tyder resultaten på att det finns synergier kopplade till digitalt datadrivet beslutsfattande, till exempel möjligheter att dela data som har potential att bli en viktig aspekt inom hållbarhet och effektivitet.
36
Sabel, Ida. "Internet of Things & Kommunikationsprotokoll". Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Data- och elektroteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-27246.
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Genom att studera olika kommunikationsprotokoll kunna svara på vad det är som gör att ett visst protokoll är bäst anpassat för att användas mellan mobila enheter och IoT-enheter. I arbetet användes en kvalitativ litteraturstudie för att ge en grundlig teoretisk bakgrund samt en experimentell studie där ett par teorier undersökts ifall de stämmer med resultaten ifrån verkligheten. De fem faktorerna kompatibilitet, batteritid, frekvens, räckvidd och tillförlitlighet undersöktes hos kommunikationsprotokollen Bluetooth Low Energy (BLE), Närfältskommunikation (NFC) och Wi-Fi. Dessa tre valdes eftersom de stöds av nyare mobila plattformar idag. Kommunikations-protokollen analyserades sedan gentemot olika användningsområden inom IoT, eftersom påståendet vad som är bäst anpassat beror på vad situationen kräver för egenskaper. En systemutvecklare som ska välja kommunikationsprotokoll till en IoT-tillämpning och läser denna rapport bör själv jämföra de olika protokollen mot varandra inom de fem faktorerna för att kunna avgöra vilket protokoll som passar bäst inom dennes situation. I arbetet utfördes endast experimentella studier på BLE på grund av begränsningar inom utrustningen. Ytterligare experiment inom NFC och Wi-Fi skulle ge ett bredare perspektiv med fler infallsvinklar.By studying different communication protocols respond to what it is that makes a certain protocol best suited for use between mobile devices and IoT devices. This study used a qualitative literature study to create a proper theoretical background and an experimental study where two theories were investigated in whether they matched wih the results from the reality. The five factors compatibility, battery loss, frequency, range and reliability were investigated in the communication protocols Bluetooth Low Energy (BLE), Near field communication (NFC) and Wi-Fi, these three because they are supported by newer mobile platforms today. The communication protocols were then analysed against various uses in the IoT, since the claim what it is that makes it best suited depends on what the situation requires. A system developer that is about to select the communication protocol to use in an IoT application and reads this study should compare the different protocols to each other within the five factors to determine which protocol is best suited for his situation. This study only performed experimental studies on BLE because of limitations in the equipment. Additional experiments on NFC and Wi-Fi would provide a wider perspective.
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Da, Silva Sandro Cahanda Marinho. "Remote surveillance and face tracking with mobile phones (smart eyes)". Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&.
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This thesis addresses analysis, evaluation and simulation of low complexity face detection algorithms and tracking that could be used on mobile phones. Network access control using face recognition increases the user-friendliness in human-computer interaction. In order to realize a real time system implemented on handheld devices with low computing power, low complexity algorithms for face detection and face tracking are implemented. Skin color detection algorithms and face matching have low implementation complexity suitable for authentication of cellular network services. Novel approaches for reducing the complexities of these algorithms and fast implementation are introduced in this thesis. This includes a fast algorithm for face detection in video sequences, using a skin color model in the HSV (Hue-Saturation-Value) color space. It is combined with a Gaussian model of the H and S statistics and adaptive thresholds. These algorithms permit segmentation and detection of multiple faces in thumbnail images. Furthermore we evaluate and compare our results with those of a method implemented in the Chromatic Color space (YCbCr). We also test our test data on face detection method using Convolutional Neural Network architecture to study the suitability of using other approaches besides skin color as the basic feature for face detection. Finally, face tracking is done in 2D color video streams using HSV as the histogram color space. The program is used to compute 3D trajectories for a remote surveillance system.
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Fong, Michael Chih Huong. "A privacy-preserving authentication protocol for smart tags". [Ames, Iowa : Iowa State University], 2010. 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:1476293.
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Röcker, Carsten. "Awareness and informal communication in smart office environments". Taunusstein Driesen, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?id=2864347&prov=M&dokv̲ar=1&doke̲xt=htm.
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Mathews, Abraham. "Smart Home Based Li-Fi System : Stereo Audio & Image Streaming by Visible light". Thesis, Mittuniversitetet, Avdelningen för elektronikkonstruktion, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-32835.
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To light up the world of technology, where wireless communication has bloomed to a great extend which requires a lot of data to be transmitted and received every fraction of the second a new era is coming. Electro-magnetic waves i.e., radio waves are the main way to transmit wireless data but certain limitations are there because radio waves can only support less bandwidth because of compact spectrum availability and intrusions. Visible Light Communication (VLC) has come to take way those issues. The new technology Li-Fi which stands for Light-Fidelity is a new kind of wireless communication system which uses light waves as a medium instead of radio frequency electromagnetic waves. This pro-ject presents an eco-friendly data communication system through visible light which consists of LEDs that transmit audio signals and sensor data to the receiver. A connection protection mechanism that co-operates with wireless network and visible light communication to achieve relia-bility and performance overcoming the drawbacks from the pre-existing system is proposed here.
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Williams, Jeffrey L. "Smart transport : a survey of tracking technologies for cargo containers & their transport platforms". Thesis, Monterey, California. Naval Postgraduate School, 2003. http://hdl.handle.net/10945/6250.
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Approved for public release; distribution unlimitedAs the threat of terrorism rises, nations seek solutions to secure their ports and lanes of commerce upon the world's oceans and skies. The transport industry has taken the lead in developing new technologies to track cargo containers and the transport platforms, for billions of dollars are at stake. This thesis examines the present and future communication and tracking systems used by the transport industry. Furthermore, an investigation into the tracking methods for high value items such as diamonds will be disclosed. By analyzing the communication and tracking systems used by the transport industry, elements of the Homeland Security organization can mitigate terrorism on the lanes of commerce and ultimately prevent weapons of mass destruction from entering the United States.
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Williams, Jeffrey L. "Smart transport : a survey of tracking technologies for cargo containers & their transport platform /". Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03sep%5FWilliams%5FJeffrey.pdf.
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Watkins, Yijing Zhang. "An Ecient and Secure Transmission Method Using Data Partitioning for AMI in Smart Grids". OpenSIUC, 2014. https://opensiuc.lib.siu.edu/theses/1468.
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Advanced Metering Infrastructure (AMI) has been rapidly developed and widely used for the utility industry; meanwhile, it also has become an attractive target of different varieties of cyber-attacks due to AMI's security and privacy vulnerabilities as well as providing a way where one may steal energy. Therefore, it is crucial to develop a reliable, secure and efficient AMI network system with privacy protection. In this thesis, we introduce our data partitioning network system that splits the data into two separate partitions and transmits on one data channel with a privacy protection mechanism, an effective energy theft detection analyzer, a secure key exchange protocol, and a collaborative intrusion detection system in order to collect, transmit, manage, analyze and store energy information for the advanced metering infrastructure in smart grids. Security, privacy and energy theft are three main threats for AMI system. Our proposed method allows the server to check the integrity without decrypting the message by using homomorphic encryption techniques. Additionally, our anomaly-based energy theft detection method detects energy theft using fuzzy clustering techniques from data mining which has a minimum accuracy of 95\%. A collaborative intrusion detection system that distributes various detection techniques with different levels of computation complexity into different parts of the AMI network communication system is discussed. With the help of an encryption key exchange protocol and the collaborative intrusion detection system, it is shown that a potential access point denial-of-service attack triggered by a single smart meter can occur and a possible solution to mitigate the attack is provided. Simulation and analytical results show that our AMI network system design can provide secure, private and efficient communication with reasonable delay and overheads.
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Wyckmans, Annemie. "Intelligent Building Envelopes : Architectural Concept & Applications for Daylighting Quality". Doctoral thesis, Norwegian University of Science and Technology, Faculty of Architecture and Fine Art, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-659.
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During the past few decades, the term intelligent building envelope has emerged as a building skin designed to meet increasingly varying and complex demands related to user comfort and energy and cost efficiency. The concept is described by a multitude of definitions that range from the use of innovative components and a high-tech visual expression to the rational design, use and maintenance of the building envelope.
Within the scope of this Ph.D., intelligent behaviour for a building envelope has been defined as adaptiveness to the environment by means of perception, reasoning and action, allowing the envelope to solve conflicts and deal with new situations that occur in its interaction with the environment, i.e., the local climate and site, and the individual user needs.
This definition is used to analyse the functions an intelligent building envelope can be expected to perform in the context of daylighting quality, or an optimisation of the indoor luminous environment to the requirements of the individual building occupant. Of particular importance is the co-operation between artificial intelligence and the material, form and composition of envelope elements, allowing the envelope to learn the occupant’s needs and preferences, to choose the most appropriate response in each situation, to make long-term strategies, to anticipate the development of environmental conditions, and to evaluate its own performance.
Simultaneously, it is found that adaptive envelope solutions in no manner reduce the need for envelope design meticulously adjusted to local climate and site and to individual user needs, developed in close co-operation between architects, engineers and manufacturers. All of the sources consulted during the course of this Ph.D. stress time and time again how difficult it is to control the operation of the envelope components according to the local environment, and, simultaneously, how important it is to do so.
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Plumley, Charles. "The smart rotor wind turbine". Thesis, University of Strathclyde, 2015. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25483.
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The smart rotor is an upgrade to the wind turbine rotor that facilitates active modification of the blade aerodynamics, thus allowing enhanced control of the rotor loads. In this thesis a number of research areas relating to the smart rotor are explored and advanced. The synthesised wind field spatial and temporal requirements are assessed, suggesting the current guidelines, of less than 5m spatial and 10Hz temporal resolutions, are more than adequate. Also regarding the wind field, it is shown that the smart rotor provides the greatest percentage benefits when there is high wind shear, but low turbulence intensity. An analytical approach to selecting the chord-width of trailing edge flaps, based on thin aerofoil theory, is presented. Demonstrating a trade-off between flap size, flap actuator requirements and load reductions. The unsteady aerodynamics of trailing edge flaps and their modelling in Bladed is also considered, showing only a limited requirement to develop the aerodynamic code. A comparison of individual pitch and smart rotor controllers shows that both methods can achieve similar load reductions. The main benefit of using a smart rotor system is the lower pitch motion. The smart rotor is also shown to reduce pitch motion by supplementing collective pitch control. The trade between pitch actuator requirements, load reductions and the cost of smart rotor control, is therefore considered the defining factor in valuing the smart rotor, rather than purely load reductions. Finally, a fault scenario of a single jammed flap is detected and corrected for. With results suggesting that even unreliable systems can achieve a significant lifetime fatigue load reduction. These studies are conducted using a methodical process detailed in this thesis, such that future researchers may build upon this work. Access to the models and code developed are provided in the appendix.
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Abraham, Sherin Ann. "PV Hosting Analysis and Demand Response Selection for handling Modern Grid Edge Capability". Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/90774.
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Recent technological developments have led to significant changes in the power grid. Increasing consumption, widespread adoption of Distributed Energy Resources (DER), installation of smart meters, these are some of the many factors that characterize the changing distribution network. These transformations taking place at the edge of the grid call for improved planning and operation practices. In this context, this thesis aims to improve the grid edge functionality by putting forth a method to address the problem of high demand during peak period by identifying customer groups for participation in demand response programs, which can lead to significant peak shaving for the utility. A possible demand response strategy for peak shaving makes use of Photovoltaic (PV) and Battery energy storage system (BESS). In the process, this work also examines the approach to computation of hosting capacity (HC) for small PV and quantifies the difference obtained in HC when a detailed Low voltage (LV) network is available and included in HC studies. Most PV hosting studies assess the impact on system feeders with aggregated LV loads. However, as more residential customers adopt rooftop solar, the need to include secondary network models in the analysis is studied by performing a comparative study of hosting capacity for a feeder with varying loading information available.Master of Science
Today, with significant technological advancements, as we proceed towards a modern grid, a mere change in physical infrastructure will not be enough. With the changes in kinds of equipment installed on the grid, a wave of transformation has also begun to flow in the planning and operation practices for a smarter grid. Today, the edge of the grid where the customer is interfaced to the power system has become extremely complex. Customers can use rooftop solar PV to generate their own electricity, they are more informed about their consumption behavior due to installation of smart meters and also have options to integrate other technology like battery energy storage system and electric vehicles. Like with any good technology, adoption of these advancements in the system brings with itself a greater need for reform in operation and planning of the system. For instance, increasing installation of rooftop solar at the customer end calls for review of existing methods that determine the maximum level of PV deployment possible in the network without violating the operating conditions. So, in this work, a comparative study is done to review the PV hosting capacity of a network with varying levels of information available. And the importance of utilities to have secondary network models available is emphasized. With PV deployed in the system, enhanced demand response strategies can be formulated by utilities to tackle high demand during peak period. In a bid to identify customers for participation in such programs, in this work, a computationally efficient strategy is developed to identify customers with high demand during peak period, who can be incentivized to participate in demand response programs. With this, a significant peak shaving can be achieved by the utility, and in turn stress on the distribution network is reduced during peak hours.
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Clarke, David Chisholm. "The quantitative analysis of TGF-beta/Smad signaling dynamics". Connect to online resource, 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:3315795.
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Smith, Melissa L. "How are you smart? Investigating academic achievement from a transpersonal perspective". Thesis, Institute of Transpersonal Psychology, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3709228.
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Intelligence was defined by early psychometricians as capabilities that could be measured by standardized tests. This definition of intelligence is largely accepted to underlie academic achievement. More recent psychological theory posits a broader definition of human intelligence. The purpose of this study was to investigate the possibility that the historic definition of intelligence could be expanded to include transpersonal capabilities as features of intelligence which contribute to academic achievement. This study utilized a quantitative, descriptive, and correlational method to explore the possibility of relationships between intelligence, as traditionally measured by standardized tests in academic settings, and four other psychological constructs—multiple intelligences, spiritual intelligence, concept imagery, and empathy. By its nature this type of research is exploratory only and does not reveal causal relationships. One hundred ninety-five English-speaking college undergraduates, 18 to 25 years old, attending university in the United States, were recruited via SurveyMonkey Audience. Data were gathered via Survey Monkey using the following instruments: a demographic questionnaire, the Multiple Intelligence Survey (MIS); The Integrated Spiritual Intelligence Scale (ISIS); the Style of Processing Scale (SOP); and the Toronto Empathy Questionnaire (TEQ). It was hypothesized that higher standardized test scores and GPA would correlate positively with concept imagery (SOP), spiritual intelligence (ISIS), empathy (TEQ), logical-mathematical intelligence (MIS), and linguistic intelligence (MIS). Findings did not support the hypothesized relationships. However, an unpredicted negative correlation, between spiritual intelligence and the ACT and SAT standardized test scores, was found. Further analysis revealed that higher ISIS scores correlated with, and predicted, lower ACT/SAT scores. This research contributes to the limited literature available that investigates the relationship between spiritual intelligence, spiritual beliefs/participation, and academic achievement. Future research is recommended to replicate these findings, and to look for causal and/or directional explanations of the negative correlation between SI and ACT/SAT scores found in this study.
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Wah, Lee Kean. "ESL teacher professional development & curriculum innovation : the case of the Malaysian Smart School project". Thesis, Lancaster University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.507420.
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This thesis reports on an investigation into the role of the ESL component of a teacher professional development (PO) system in a national-level curriculum innovation initiative - the Malaysian Smart School Curriculum (SSC) project. The central aim of the study was to attempt to carry out an in-depth investigation of the functioning of a PD system occurring in a context which is currently under-represented in research and theorising, with a view to contributing thereby to the further development of understanding about such systems and their overall conceptualisation. The study employed a mixed-method design, consisting of an initial "horizontal" dimension and a subsequent ''vertical'' one. The former took the form of a survey of ESL teachers and ESL "managers" in a single state within Malaysia, aimed at eliciting information and views about the functioning of the SSC PO system. The latter consisted of a case study, based on a single SSC secondary school in the same state. Interviews, field notes and documentary analysis were used to elicit data, with a similar focus to that obtained in the first part of the study, from the school's ESL teachers, management team and the wider related network of SSC PO personnel. The findings were analysed in terms of the "state-of-the-art" model of PO presented in Adey (2004). In overall terms, a number of major discrepancies were found between the two systems. In the main, the SSC PO system was found to have an overall "Skills and Knowledge Transmission" orientation, i.e., to focus mainly on the provision of "input" about the SSC via off-site training courses with relatively little on-site follow-up, in contrast to the additional presence in Adey's model of an important linked "Community of Practice"-oriented PO element. The SSC PO system was also seen, by and large, not to have brought about the desired understanding at the classroom level of how to put SSC-related teaching and learning techniques into practice. However, these outcomes were not viewed as implying that PD systems such as the SSC one should simply be redeveloped to conform to the "prestige" model. Rather, it is argued that there needs to be greater appreciation of the way the design of PO systems is influenced by socio-cultural factors, and of the importance of attempting to remedy any shortcomings in them in a culturally-appropriate manner.
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Sikorska, Irina, e Ірина Сікорська. "Implementation pecularities of smart contracts in M&A on the basis of blockchain technology". Thesis, National Aviation University, 2021. https://er.nau.edu.ua/handle/NAU/51249.
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1. What Are Smart Contracts? Available at: https://www.cryptoninjas.net/what-are-smart-contracts (accessed: 26.02.2021).
2. Raskin, Max, The Law and Legality of Smart Contracts (September 22, 2016). 1 Georgetown Law Technology Review 304 (2017). Available at SSRN: https://ssrn.com/abstract=2959166 (accessed: 26.02.2021).
3. How Smart contracts can help in mergers and acquisitions? Available at: https://www.solulab.com/how-smart-contract-helps-in-merger-and-acquisition (accessed: 26.02.2021).
4. Equity funding and investment of blockchain startup companies worldwide from 2012 to 2019. Available at: https://www.statista.com/statistics/621207/worldwide-blockchain-startup-financing-history (accessed: 26.02.2021).Blockchain is a highly mainstreamed technology nowadays basically widely known by cryptocurrency development – such as Bitcoin, Ripple, Litecoin etc. Вut there are also a lot of other technological innovations which came to the world thanks to blockchain technology. One of them is smart contract technology.
На сьогоднішній день блокчейн - це широко поширена технологія, яка в основному широко відома розробкою криптовалют - наприклад, Біткойн, Ripple, Litecoin тощо. Але є також безліч інших технологічних нововведень, які з’явились у світі завдяки технології блокчейн. Один з них - технологія смарт-контрактів.