Tesis sobre el tema "RRM"
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Tiwana, Moazzam Islam. "Automated RRM optimization of LTE networks using statistical learning". Phd thesis, Institut National des Télécommunications, 2010. http://tel.archives-ouvertes.fr/tel-00589617.
Texto completoTiwana, Moazzam Islam. "Automated RRM optimization of LTE networks using statistical learning". Electronic Thesis or Diss., Evry, Institut national des télécommunications, 2010. http://www.theses.fr/2010TELE0025.
Texto completoThe mobile telecommunication industry has experienced a very rapid growth in the recent past. This has resulted in significant technological and architectural evolution in the wireless networks. The expansion and the heterogenity of these networks have made their operational cost more and more important. Typical faults in these networks may be related to equipment breakdown and inappropriate planning and configuration. In this context, automated troubleshooting in wireless networks receives a growing importance, aiming at reducing the operational cost and providing high-quality services for the end-users. Automated troubleshooting can reduce service breakdown time for the clients, resulting in the decrease in client switchover to competing network operators. The Radio Access Network (RAN) of a wireless network constitutes its biggest part. Hence, the automated troubleshooting of RAN of the wireless networks is very important. The troubleshooting comprises the isolation of the faulty cells (fault detection), identifying the causes of the fault (fault diagnosis) and the proposal and deployement of the healing action (solution deployement). First of all, in this thesis, the previous work related to the troubleshooting of the wireless networks has been explored. It turns out that the fault detection and the diagnosis of wireless networks have been well studied in the scientific literature. Surprisingly, no significant references for the research work related to the automated healing of wireless networks have been reported. Thus, the aim of this thesis is to describe my research advances on "Automated healing of LTE wireless networks using statistical learning". We focus on the faults related to Radio Resource Management (RRM) parameters. This thesis explores the use of statistical learning for the automated healing process. In this context, the effectiveness of statistical learning for automated RRM has been investigated. This is achieved by modeling the functional relationships between the RRM parameters and Key Performance Indicators (KPIs). A generic automated RRM architecture has been proposed. This generic architecture has been used to study the application of statistical learning approach to auto-tuning and performance monitoring of the wireless networks. The use of statistical learning in the automated healing of wireless networks introduces two important diculties: Firstly, the KPI measurements obtained from the network are noisy, hence this noise can partially mask the actual behaviour of KPIs. Secondly, these automated healing algorithms are iterative. After each iteration the network performance is typically evaluated over the duration of a day with new network parameter settings. Hence, the iterative algorithms should achieve their QoS objective in a minimum number of iterations. Automated healing methodology developped in this thesis, based on statistical modeling, addresses these two issues. The automated healing algorithms developped are computationaly light and converge in a few number of iterations. This enables the implemenation of these algorithms in the Operation and Maintenance Center (OMC) in the off-line mode. The automated healing methodolgy has been applied to 3G Long Term Evolution (LTE) use cases for healing the mobility and intereference mitigation parameter settings. It has been observed that our healing objective is achieved in a few number of iterations. An automated healing process using the sequential optimization of interference mitigation and packet scheduling parameters has also been investigated. The incorporation of the a priori knowledge into the automated healing process, further reduces the number of iterations required for automated healing. Furthermore, the automated healing process becomes more robust, hence, more feasible and practical for the implementation in the wireless networks
Shabbir, Noman y Hasnain Kasif. "Radio Resource Management in WiMAX". Thesis, Blekinge Tekniska Högskola, Avdelningen för signalbehandling, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-1227.
Texto completoVojisavljevic, Vuk y Vuk Vojisavljevic@rmit edu au. "The Electromagnetic Field as a Modulator of a Protein Activity, and the Resonant Recognition Model". RMIT University. Electrical and Computer Engineering, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080530.162332.
Texto completoAndersson, Jessica, Christopher Gertzell y Joanna Hansson. "Företagsranking : En studie om hur företag förhåller sig till ranking inom hållbarhet". Thesis, Uppsala universitet, Företagsekonomiska institutionen, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-202189.
Texto completoToman, Petr. "Optimalizace rádiových přístupových sítí UMTS v prostředí Opnet Modeler". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217450.
Texto completoMandel, Jérémie. "Approches synthétiques de tétrahydroisoquinoléines par cyclisation Pallado-Catalysée & synthèse de composés spirocétaliques par RRM". Phd thesis, Université de Haute Alsace - Mulhouse, 2010. http://tel.archives-ouvertes.fr/tel-00717736.
Texto completoGuermann, Benoît. "Identification et étude fonctionnelle d'une famille de proréines mitochondriales à motif RRM chez les plantes supérieures". Université Louis Pasteur (Strasbourg) (1971-2008), 2004. http://www.theses.fr/2004STR13084.
Texto completoNaddeh, Nathalie. "Impact of slicing on radio resource management in 5G for vehicular URLLC and eMBB". Electronic Thesis or Diss., Institut polytechnique de Paris, 2022. http://www.theses.fr/2022IPPAS021.
Texto completoThe Fifth Generation-New Radio (5G-NR) introduced the concept of slicing to target different types of services. We consider in this thesis vehicular traffic, with vehicles sending two types of flows: enhanced Mobile BroadBand (eMBB) and Ultra-Reliable and Low Latency Communications (URLLC). These flows are transported in two different slices, the former trying to guarantee and/or maximize the throughput, while the latter has to meet stringent Quality of Service (QoS) constraints in terms of delay, on the order of 1ms, and reliability, on the order of 99,999%. These slices with heterogeneous traffic profiles and QoS requirements must share the same physical infrastructure. This thesis aims to propose new resource allocation schemes to satisfy URLLC stringent QoS requirements without impacting too much eMBB traffic. One main challenge is when resources initially reserved for eMBB must be allocated to the arrival of new URLLC flow. Due to using different numerologies, these resources need to be reconfigured, adding extra delay on the order of 80ms, which exceeds the URLLC delay budget. To respond to this delay problem, we propose proactive resource reservation schemes for URLLC which anticipates the vehicles' arrival in a cell and (re-)configures the slice before their effective arrival in the cell. These approaches enable to meet the delay and throughput requirements of vehicular URLLC and eMBB traffic, respectively.We additionally introduce an inter-slice dimensioning model that considers user's radio conditions and trajectories in the network, which enables taking into consideration users Modulation and Coding Schemes (MCS). By doing so, we achieve a better resource allocation through finer optimization. Our results show that we are able to satisfy traffic requirements with a better resource utilization.Eventually, we investigate an alternative dimensioning model based on large deviation bounds. We analyze the tail of the system corresponding to the URLLC outage region. We consider two approaches: with and without packet queuing. We observe that large deviation bounds result in slightly more over-reservation than the aforementioned approach when applied to URLLC, with the advantage of instantaneous computation of the needed resources
Ciani, Caterina. "CHARACTERIZATION OF A NEW PUTATIVE ELAV-LIKE BINDING PROTEIN IN ACINETOBACTER BAUMANNII". Doctoral thesis, Università degli studi di Trento, 2022. http://hdl.handle.net/11572/335960.
Texto completoKairouani, Alicia. "Caractérisation moléculaire et rôle développemental d’une famille de protéines à motifs AGO-hook et RRM chez Arabidopsis thaliana". Thesis, Perpignan, 2019. http://www.theses.fr/2019PERP0040.
Texto completoRNA silencing is a conserved molecular mechanism which plays important roles in different biological processes. It is characterized by the production of small RNAs that associate with Argonaute (AGO) proteins forming the so-called RNA-Induced Silencing Complex (RISC). The AGO partners generally harbor a motif enriched in WG/GW repeats named AGO-HOOK. Such domains are highly conserved in eukaryotes and a bioinformatic approach allowed us to identify, in the Arabidopsis genome, about 40 encoded proteins containing a potential AGO-HOOK domain. Among these candidates, a family of four proteins contains also an RNA Recognition Motif (RRM) domain. Interestingly, these proteins have been recently identified in Arabidopsis messenger RNA proteome. My thesis work consisted in studying the function of these four proteins, called RAHP for RRM and AGO-HOOK containing Proteins. We have shown that RAHP genes are expressed and that the corresponding proteins are localized in the cytoplasm and nuclei. Biochemical analysis suggests that RAHP proteins could interact with AGO1 in vivo. The identification of knock-out lines and the production of multiple mutants (double, triple and quadruple) reveal a dominant and redundant role of RAHP2 and RAHP4 proteins in vivo. The mutants present pleiotropic defects affecting root gravitropism, leaf senescence, rosette development and stem rigidity. Mutations of RAHP domains reveal the importance of RRM but not the AGO-hook domain in the developmental function of these proteins. We focused our work on the study of the pendant stem phenotype showing that it correlates with modifications of the secondary cell wall and a loss of lignin. RNA-seq analysis performed on the stem identified several genes whose expression is up-regulated in the mutants and that belong to the defense and polysaccharide catabolism gene categories. This work opens perspectives regarding the function of RAHP proteins in Arabidopsis
Gallouzi, Imed Eddine. "Etude fonctionnelle de deux protéines à domaine RRM : G3BP une RNase interagissant avec RasGAP et RSF1, un répresseur de l'épissage". Montpellier 2, 1998. http://www.theses.fr/1998MON20068.
Texto completoDhondge, Hrishikesh. "Structural characterization of RNA binding to RNA recognition motif (RRM) domains using data integration, 3D modeling and molecular dynamic simulation". Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0103.
Texto completoThis thesis was carried out in the frame of a larger European project (ITN RNAct) in which computer science and biology approaches were combined to make progress towards the synthesis of new protein domains able to bind to specific RNA sequences. The specific goal of this thesis was to design and develop computational tools to better exploit existing knowledge on RNA Recognition Motif (RRM) domains using 3D modeling of RRM-RNA complexes. RRMs account for 50% of all RNA binding proteins and are present in about 2% of the protein-coding regions of the human genome. However, due to the large diversity of RRMs, there have been very few successful examples of new RRM design so far. A central achievement of this thesis is the construction of a relational database called `InteR3M' that integrates sequence, structural and functional information about RRM domains. InteR3M database (href{https://inter3mdb.loria.fr/}{https://inter3mdb.loria.fr/}) contains 400,892 RRM domain instances (derived from UniProt entries) and 1,456 experimentally solved 3D structure (derived from PDB entries) corresponding to only 303 distinct RRM instances. In addition, InteR3M stores 459,859 atom-atom interactions between RRM and nucleic acids, retrieved from 656 3D structures in which the RRM domain is complexed with RNA or DNA. During the data collection procedure, inconsistencies were detected in the classification of several RRM instances in the popular domain databases CATH and Pfam. This led me to propose an original approach (CroMaSt) to solve this issue, based on cross-mapping of structural instances of RRMs between these two domain databases and on the structural alignment of unmapped instances with an RRM structural prototype. The CroMaSt CWL workflow is available on the European Workflow hub at href{https://workflowhub.eu/workflows/390}{https://workflowhub.eu/workflows/390}. Sequence and structural information stored in InteR3M database was then used to align RRM domains and map all RRM-RNA interactions onto this alignment to identify the different binding modes of RNA to RRM domains. This led to the development, with RNAct partners at VUB (Vrije Universiteit Brussel), of the `RRMScorer' tool. This tool contributes to decipher the RRM-RNA code by computing binding probabilities between RNA nucleotides and RRM amino acids at certain positions of the alignment. Atomic contacts between RRMs and RNA were also used to identify anchoring patterns, i.e. prototypes of 3D atomic positions (relative to the protein backbone) of a nucleotide stacked on a conserved aromatic amino acid. These anchors can be used as constraints in anchored docking protocols. The `RRM-RNA dock' docking pipeline is presented here and integrates both anchoring patterns extracted from InteR3M and binding scores from RRMScorer. Finally, molecular dynamic (MD) simulation is another computational tool tested in this thesis to contribute to the 3D modeling of RRM-RNA complexes. Promising preliminary MD protocols are described as attempts to distinguish between strongly and weakly binding RRM-RNA complexes
Austin, James. "The structural characterisation of two DNA protectants during stress : the tandem RRM domains of mouse TDP-43 and E. coli DPS". Thesis, University of Liverpool, 2013. http://livrepository.liverpool.ac.uk/16713/.
Texto completoRossi, Ferdinand. "Phosphorylation et activité des facteurs d'épissage à domaines RRM et RS : Mise en évidence de l'activité kinase de la DNA topoisomérase I". Montpellier 2, 1996. http://www.theses.fr/1996MON20210.
Texto completoRoberg, Kristoffer. "Simulation of scheduling algorithms for femtocells in an LTE environment". Thesis, Linköping University, Communication Systems, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-59651.
Texto completoThe new mobile standard Long Term Evolution delivers high data rates, small delay and a more efficiently utilized RF spectrum. A solution to maintain this performance in user dense areas or areas with bad reception is the deployment of so-called femtocells. Femtocells are small base stations that are deployed indoors and share the RF spectrum with the whole mobile network. The idea is that femtocells will increase mobile operators network coverage and capacity while it at the same time increase users data throughput. There are several challenges with femtocells, both technical and economical ones. The most debated issues is how femtocells should schedule users while operating in an environment where other femtocells and base stations are interfering. In this work we developed a simulation tool to simulate the scheduling interaction between femtocells and base stationsin order to show the performance of radio resource schedulers. This rapport also aims to evaluate an approach to a femtocell scheduler to solve this issue in a satisfying way. The report gives a description of the structure of the implemented simulation tool together with some reflections on how future designs of similar or more complex simulation environments could be done.
Pettersson, Stefan. "Radio resource management for wireless indoor communication systems : performance and implementation aspects". Doctoral thesis, KTH, Signals, Sensors and Systems, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3743.
Texto completoIn this thesis, we investigate several radio resourcemanagement (RRM) techniques and concepts in an indoorenvironment with a dense infrastructure. Future wireless indoorcommunication networks will very likely be implemented atplaces where the user concentration is very high. At these hotspots, the radio resources must be used efficiently. The goalis to identify efficient RRM techniques and concepts that aresuitable for implementation in an indoor environment.
Handling the high level of co-channel interference is shownto be of paramount importance. Several investigations in thethesis point this out to be the key problem in an indoorenvironment with a dense infrastructure. We show that a locallycentralized radio resource management concept, the bunchconcept, can give a very high performance compared to othercommonly used RRM concepts. Comparisons are made withdistributed systems and systems using channel selection schemeslike CSMA/CA. The comparisons are primarily made by capacityand throughput analysis which are made by system levelsimulations. Results show that the centralized concept can give85 percent higher capacity and 70 percent higher throughputthan any of the compared systems.
We investigate several RRM techniques to deal with thechannel interference problem and show that beamforming cangreatly reduce the interference and improve the systemperformance. Beamforming, especially sector antennas, alsoreduce the transmitter powers and the necessary dynamic range.A comparison is made between the use of TD/CDMA and pure TDMAwhich clearly shows the performance benefits of usingorthogonal channels that separates the users and reduces theco-channel interference. Different channel selection strategiesare studied and evaluated along with various methods to improvethe capability of system co-existence.
We also investigate several practical measures to facilitatesystem implementation. Centralized RRM is suitable forguaranteeing QoS but is often considered too complex. With thestudied centralized concept the computational complexity can bereduced by splitting the coverage area into smaller pieces andcover them with one centralized system each. This reduces thecomplexity at the prize of lost capacity due to theuncontrolled interference that the different systems produce.Our investigations show that sector antennas can be used toregain this capacity loss while maintaining high reduction incomplexity. Without capacity loss, the computational complexitycan be reduced by a factor of 40 with sectoring. Theimplementation aspects also include installation sensitivity ofthe indoor architecture and the effect of measurement errors inthe link gains. The robustness against installation errors ishigh but the bunch concept is quite sensitive to largemeasurement errors in the studied indoor environment. Thiseffect can be reduced by additional SIR-margins of the radiolinks.
The studied bunch concept is shown to be promising for usein future wireless indoor communication systems. It provideshigh performance and is feasible to implement.
Keywords:Radio resource management, indoorcommunication, the bunch concept, centralized RRM, dynamicchannel allocation, channel selection, co-channel interference,power control, feasibility check, capacity, throughput, qualityof service, beamforming, downtilting, sector antennas,co-existence, computational complexity, sensitivity analysis,measurement errors, infrastructure, system implementation,WLAN, HiperLAN/2, IEEE 802.11.
Mehari, Tariku Temesgen. "Frequency Hopping in LTE Uplink". Thesis, Blekinge Tekniska Högskola, Avdelningen för telekommunikationssystem, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-4232.
Texto completottma07@student.bth.se tariku.temesgen.mehari@ericsson.com
Vivancos, Julien. "Caractérisation fonctionnelle des gènes Terminal Ear like au sein de la lignée verte". Paris 11, 2009. http://www.theses.fr/2009PA112018.
Texto completoThe land colonisation by plants was accompanied by an enormous increase in their size and the sharing out of functions within specialised tissues and organs. This cellular complexification, associated with the rise to dominance of the diploid phase (sporophyte) of the life cycle, required the recruitment and the evolution of many genes. In order to better understand the involved mechanisms, we focused our attention on TEL genes which encode RRM-type RNA-binding proteins. Indeed, they appeared as good candidates, since they are only present in land plants and they were shown to regulate the initiation of foliar and floral organs in Poaceae. So, the functional characterisation of TEL genes within the Green Lineage was initiated. The analysis of Physcomitrella patens mutants expressing truncated versions of the unique PpTEL gene allowed us to show that this gene was negatively controlling the growth of the protonema and the sporophytes, whereas it regulates positively the initiation and the development of gametophores. In Arabidopsis thaliana, the characterisation of TEL mutants highlighted a key role for AtTEL1 and AtTEL2 in the positive regulation of vegetative growth and floral transition, whereas they negatively control the development of flowers. Moreover, we could show that TEL genes would act as metabolic sensors, able to regulate cellular division and therefore the plant growth, depending on the available energy for the plant
Trésaugues, Lionel. "Étude systématique des domaines protéiques dans le cadre d'un projet de génomique structurale : application au cas de la protéine de levure Set1". Paris 11, 2006. http://www.theses.fr/2006PA112360.
Texto completoStructural biology study of modular proteins often requires the isolation of individual proteic domains. Three methods that allow the generation of isolated domains were developped and their systematic use within a structural genomics projects evaluated during this thesis. The methods leading to the best results was applied to yeast histone methyltransferase Set1. Two regulatory domains belonging to the RRM (RNA Recognition Motif) family were isolated and studied. One of them was cristallized and its three-dimensionnal structure solved. This domains doesn't harbour the typical features of RRM domains. Moreover, a C-Terminal helix is located on the region used to bind RNA molecules in conventionnal RRM domains. Thus, we propose that this domain is involved in mediating protein/protein interactions instead of protein/RNA interactions. Complementary mutagenic studies correlated with in vivo functionnal studies allowed to decipher the role of the two Set1 RRM domains in the modulation of the protein activity and the regulation of the transcription of different genes
Richardson, Adam. "Apexification Healing Patterns Comparing MTA & Bioceramic Putty". The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu159177077247595.
Texto completoBasuroy, Tupa. "Intricate RNA:RNA Interactions In U12-dependent Nuclear Pre-mRNA Splicing". Cleveland State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=csu1326921404.
Texto completoSha, Sha. "Performance Modelling and Analysis of Handover and Call Admission Control Algorithm for Next Generation Wireless Networks". Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5509.
Texto completoKašpárek, Jan. "Predikce aktivních míst v proteinech". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220054.
Texto completoFrenal, Karine. "Caractérisation structurale et fonctionnelle de TgDRE : une enzyme de réparation de l' ADN du parasite Toxoplasma gondii". Paris 6, 2006. http://www.theses.fr/2006PA066031.
Texto completoHavlíček, Karel. "Optimalizace přístupové sítě UMTS". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217447.
Texto completoRothé, Françoise. "Identification des protéines FBP1 et FBP2 comme partenaires des protéines de liaison aux éléments riches en adénine et uridine (ARE) TIA-1 et TIAR". Doctoral thesis, Universite Libre de Bruxelles, 2006. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210897.
Texto completoDoctorat en sciences, Spécialisation biologie moléculaire
info:eu-repo/semantics/nonPublished
Dimou, Konstantinos. "Améliorations de l'accès paquet en sens montant du WCDMA". Phd thesis, Télécom ParisTech, 2003. http://pastel.archives-ouvertes.fr/pastel-00000671.
Texto completoManouchehrabadi, Maryam Kharaji. "Reliable Centered Maintenance (RCM) Reliable and Risk Centered Maintenance (RRCM) in Offshore Wind Farms (Case Study- Sweden)". Thesis, Högskolan på Gotland, Institutionen för kultur, energi och miljö, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-217022.
Texto completoDogan, Rabia. "System Level Exploration of RRAM for SRAM Replacement". Thesis, Linköpings universitet, Elektroniksystem, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-92819.
Texto completoMartín-Sacristán, Gandía David. "3GPP Long Term Evolution: Performance Analysis and Evolution towards 4G with Coordinated Multi-Point Transmission". Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/63261.
Texto completo[ES] En la actual sociedad, hay una creciente necesidad de acceso a servicios de comunicación de datos de forma ubicua, móvil y a velocidades cada vez más altas. Esta demanda ha motivado el desarrollo de la cuarta generación de comunicaciones móviles (4G) y su evolución hacia la quinta generación (5G). Este desarrollo ha requerido una revolución en la interfaz radio de los sistemas de comunicaciones móviles modificando en gran medida sus capacidades y la forma en la que se gestionan sus recursos. Este es el caso de la tecnología conocida como Long Term Evolution (LTE) y su versión 4G llamada LTE-Advanced. En concreto, esta Tesis Doctoral aborda el modelado, análisis de la gestión de recursos radio y evaluación de prestaciones del enlace descendente de LTE y LTE-Advanced, donde, de entre las características de LTE-Advanced, se ha puesto el foco de atención en la transmisión multipunto coordinada (CoMP). La Tesis proporciona una descripción detallada de las principales características de LTE y LTE-Advanced. La gran complejidad del sistema descrito ha motivado que la metodología de estudio haya sido la simulación mediante ordenador. La Tesis realiza una descripción detallada de dicha metodología y del modelado del sistema empleado, incluyendo algunas aportaciones del autor en este campo. De entre éstas, destaca la provisión de resultados de simulación de nivel de enlace que se usaron en el proyecto europeo WINNER+ para la evaluación de LTE. En cuanto al análisis de la gestión de recursos radio en LTE, en primer lugar, se explican los fundamentos de la adaptación al enlace y el scheduling. En relación con el scheduling, se realiza un estudio del concepto de proportional fairness y de la implementación subóptima típicamente usada en LTE para maximizar esta métrica. Este estudio ha dado como resultado una modificación de la implementación típica que ha demostrado ser capaz de aumentar la proportional fairness en la asignación de recursos con un bajo incremento de complejidad. Además, el análisis de la adaptación al enlace ha revelado el problema del efecto de "luz de flash" consistente en la alta variabilidad de la interferencia debida a rápidos cambios en las decisiones del scheduler. La Tesis demuestra que se pueden mejorar las prestaciones del sistema estabilizando dichas decisiones mediante una implementación concreta. El bloque de análisis de la gestión de recursos se completa con el estudio de CoMP. Específicamente, se estudia una solución con coordinación de scheduling y conformación de haz (CS/CB) que tiene en cuenta suposiciones reales y robustas en cuanto al conocimiento que los puntos coordinados tienen de los canales radio. La Tesis propone esta solución por su sencillez y capacidad de mejorar la eficiencia de los sistemas de comunicaciones móviles, tanto en cobertura de velocidades altas de transmisión como en capacidad, aun teniendo un conocimiento incompleto del canal. En cuanto a la evaluación de LTE y LTE-Advanced, ésta se realiza en dos tipos de escenarios. Por un lado, los escenarios definidos en el proceso de evaluación de IMT-Advanced. En este marco, se evalúa la importancia de diferentes técnicas de transmisión multiantena, incluyendo CoMP, y considerando tráfico de tipo full-buffer. Se ha obtenido una gran mejora de prestaciones por la multiplexación espacial de usuarios y mejoras discretas por el uso de CoMP. El segundo grupo de escenarios son los definidos por el proyecto europeo METIS para evaluación de tecnologías 5G, concretamente se han elegido un escenario de interiores con una oficina, y uno de exteriores con un estadio deportivo. En estos escenarios se utiliza un tráfico realista y se ha demostrado la utilidad de CoMP para mejorar las prestaciones del sistema. En estos escenarios con despliegues menos uniformes, o con un número limitado de transmisores provocando la mayor parte de la interferencia, es donde esta Tesis ha encontrado la mayor u
[CAT] En l'actual societat de la informació, hi ha una creixent necessitat d'accés a serveis de comunicació de dades de forma ubiqua, mòbil i a velocitats cada vegada més altes. Aquesta demanda de la societat, ha motivat el desenrotllament de la quarta generació de comunicacions mòbils (4G) i la seua evolució cap a la quinta generació (5G). Aquest desenrotllament ha requerit una revolució en la interfície ràdio dels sistemes de comunicacions mòbils i ha modificat en gran manera les seues capacitats i la forma en què es gestionen els seus recursos. Aquest és el cas de la tecnologia coneguda com a Long Term Evolution (LTE) i la seua versió 4G anomenada LTE-Advanced. En concret, aquesta Tesi Doctoral aborda el modelatge, anàlisi de la gestió de recursos ràdio i avaluació de prestacions de l'enllaç descendent de LTE i LTE-Advanced, on, d'entre les característiques de LTE-Advanced, s'ha posat el centre d'atenció en la transmissió multipunt coordinada (CoMP). La Tesi proporciona una descripció detallada de les principals característiques de LTE i LTE-Advanced. La gran complexitat del sistema descrit ha motivat que la metodologia d'estudi s'haja basat en simulació per mitjà d'ordinador. La Tesi realitza una descripció detallada de la metodologia de simulació i del modelatge del sistema empleat, incloent-hi algunes aportacions de l'autor en aquest camp. D'entre aquestes, destaca la provisió de resultats de simulació de nivell d'enllaç que es van usar en el projecte europeu WINNER+ per a l'avaluació de LTE. Pel que fa a l'anàlisi de la gestió de recursos ràdio en LTE, en primer lloc, s'expliquen els fonaments de l'adaptació a l'enllaç i el scheduling. En relació amb el scheduling, es realitza un estudi del concepte de proportional fairness i de la implementació subòptima típicament usada en LTE per a maximitzar aquesta mètrica. L'estudi ha donat com a resultat una modificació de la implementació típica que ha demostrat ser capaç d'augmentar la proportional fairness en l'assignació de recursos amb un baix increment de complexitat. A més, l'anàlisi de l'adaptació a l'enllaç ha desvetllat el problema de l'efecte de "llum de flaix" consistent en la alta variabilitat de la interferència deguda a una ràpida variació de les assignacions de recursos. La Tesi demostra que es poden millorar les prestacions del sistema estabilitzant les decisions del scheduler mitjançant una implementació concreta. En el bloc d'anàlisi de la gestió de recursos d'aquesta Tesi es completa amb l'estudi de CoMP. Específicament, s'estudia una solució amb coordinació de scheduling i conformació de feix (CS/CB), que té en compte suposicions reals i robustes quant al coneixement que els punts coordinats tenen dels canals ràdio dels usuaris servits. La Tesi proposa aquesta solució per la seua senzillesa i capacitat de millorar l'eficiència dels sistemes de comunicacions mòbils, tant en cobertura de velocitats altes de transmissió com en capacitat, encara tenint un coneixement incomplet del canal. Quant a l'avaluació de LTE i LTE-Advanced, aquesta es realitza en dos tipus d'escenaris diferents. D'una banda, els escenaris definits dins del procés d'avaluació de tecnologies IMT-Advanced. Dins d'aquest marc, s'avalua la importància de diferents tècniques de transmissió multi-antena, incloent-hi CoMP, i considerant tràfic de tipus full-buffer. S'ha obtingut una gran millora de prestacions amb la multiplexació espacial d'usuaris i una discreta millora amb CoMP. El segon grup d'escenaris són els definits pel projecte europeu METIS per a l'avaluació de tecnologies 5G, concretament s'han triat un escenari d'interiors amb una oficina, i un d'exteriors amb un estadi esportiu, on s'ha utilitzat un tràfic realista. En aquests escenaris amb desplegaments menys uniformes, o amb un nombre limitat de transmissors provocant la major part de la interferència, és on aquesta Tesi ha trobat la utilitat més gran de
Martín-Sacristán Gandía, D. (2016). 3GPP Long Term Evolution: Performance Analysis and Evolution towards 4G with Coordinated Multi-Point Transmission [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/63261
TESIS
Carvalho, Leidiane Coelho [UNESP]. "Análise econômica da produção de soja rr2 pro e soja rr1: estudo de caso no Estado de Mato Grosso". Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/126615.
Texto completoA incidência de insetos praga na cultura da soja causa aumento no custo de produção, o que ocasiona menor rentabilidade ao produtor em razão da maior utilização de defensivos para seu controle. Deste modo, o desenvolvimento de ferramentas que atenuem estes problemas é frequente. Assim, a biotecnologia torna-se alternativa que contribui para minimizar os impactos deste cenário. A transformação genética de plantas cultivadas possibilita o melhoramento da produção, por meio da inserção de características agronômicas desejáveis. No entanto, ao adotar semente transgênica o custo da semente deve ser levado em consideração devido aos direitos de patentes pagas ao detentor da tecnologia, o que também pode refletir em aumento do custo de produção. A partir da necessidade de alternativas ao manejo fitossanitário de insetos praga foi desenvolvida a soja RR2 PRO, tolerante a herbicida e resistente a insetos. Esta cultivar é a evolução da soja RR1 que apresenta apenas tolerância a herbicida. Além do custo de produção mais satisfatório ao sojicultor, espera-se que a cultura proporcione benefícios sociais e ambientais, através da menor exposição do homem aos defensivos, bem como menor contaminação ambiental, seja por menor uso de defensivo, seja pela menor emissão de CO2. Todavia, o custo para obtenção desta tecnologia deve ser ponderado frente ao real benefício gerado. Diante disso, este trabalho teve como objetivo estimar indicadores econômicos do sistema de produção com a soja RR2 PRO e a soja RR1 no estado de Mato Grosso. A metodologia utilizada para estimar o custo operacional de produção foi a do Instituto de Economia Agrícola (IEA). Foram avaliados os principais indicadores de rentabilidade. O custo operacional total (COT) do sistema com adoção da soja RR2 PRO foi inferior ao sistema com adoção da soja RR1, refletindo no menor custo por saca da ...
The appearance of insect pests in soybean cultivars may increase production cost and reduce producer profitability due to high use of pesticides. Techniques to minimize these problems must be developed. Biotechnology has become an alternative to minimize the impact on scenarios. Genetic transformations in cultivars enables production improvements by inserting desirable agronomic characteristics. Thus, it is necessary to take into account the cost of transgenic seeds. Patent rights of transgenic seeds require payment to them. However, the adoption of transgenic seeds requires consideration of the added production cost due to payment of patent rights of the technology's owner. The need for alternative insect pest management led to the development of the herbicide-tolerant insect-resistant soybean cultivar RR2 PRO, which was evolved from the herbicide-tolerant RR1 PRO. Besides reducing production costs, the RR2 PRO cultivar is expected to provide social and environmental benefits including reductions in exposure, environmental contamination, pesticide use and CO2 emissions. A cost assessment of this technology should take into account the real benefit generated. Thus, the objective of this study was estimated economic indicators in a soybean system of RR2 PRO and RR1 in the state of Mato Grosso. Operational cost was evaluated by Instituto de Economia Agrícola (IEA) methodology. Mean profitability indicator was evaluated. The soybean system RR2 PRO presented lower total operational cost than the RR1 system, including lower cost per bag under the RR2 PRO system versus RR1. Favorable profitability was demonstrated by both RR2 PRO with insect resistance and RR1 without insect resistance. However, the results have shown that the insect-resistant soybean cultivar may offer more advantages than its counterpart without insect resistance
Carvalho, Leidiane Coelho. "Análise econômica da produção de soja rr2 pro e soja rr1: estudo de caso no Estado de Mato Grosso /". Botucatu, 2015. http://hdl.handle.net/11449/126615.
Texto completoBanca: Luiz Cesar Ribas
Banca: Marcelo Fodra
Resumo: A incidência de insetos praga na cultura da soja causa aumento no custo de produção, o que ocasiona menor rentabilidade ao produtor em razão da maior utilização de defensivos para seu controle. Deste modo, o desenvolvimento de ferramentas que atenuem estes problemas é frequente. Assim, a biotecnologia torna-se alternativa que contribui para minimizar os impactos deste cenário. A transformação genética de plantas cultivadas possibilita o melhoramento da produção, por meio da inserção de características agronômicas desejáveis. No entanto, ao adotar semente transgênica o custo da semente deve ser levado em consideração devido aos direitos de patentes pagas ao detentor da tecnologia, o que também pode refletir em aumento do custo de produção. A partir da necessidade de alternativas ao manejo fitossanitário de insetos praga foi desenvolvida a soja RR2 PRO, tolerante a herbicida e resistente a insetos. Esta cultivar é a evolução da soja RR1 que apresenta apenas tolerância a herbicida. Além do custo de produção mais satisfatório ao sojicultor, espera-se que a cultura proporcione benefícios sociais e ambientais, através da menor exposição do homem aos defensivos, bem como menor contaminação ambiental, seja por menor uso de defensivo, seja pela menor emissão de CO2. Todavia, o custo para obtenção desta tecnologia deve ser ponderado frente ao real benefício gerado. Diante disso, este trabalho teve como objetivo estimar indicadores econômicos do sistema de produção com a soja RR2 PRO e a soja RR1 no estado de Mato Grosso. A metodologia utilizada para estimar o custo operacional de produção foi a do Instituto de Economia Agrícola (IEA). Foram avaliados os principais indicadores de rentabilidade. O custo operacional total (COT) do sistema com adoção da soja RR2 PRO foi inferior ao sistema com adoção da soja RR1, refletindo no menor custo por saca da ...
Abstract: The appearance of insect pests in soybean cultivars may increase production cost and reduce producer profitability due to high use of pesticides. Techniques to minimize these problems must be developed. Biotechnology has become an alternative to minimize the impact on scenarios. Genetic transformations in cultivars enables production improvements by inserting desirable agronomic characteristics. Thus, it is necessary to take into account the cost of transgenic seeds. Patent rights of transgenic seeds require payment to them. However, the adoption of transgenic seeds requires consideration of the added production cost due to payment of patent rights of the technology's owner. The need for alternative insect pest management led to the development of the herbicide-tolerant insect-resistant soybean cultivar RR2 PRO, which was evolved from the herbicide-tolerant RR1 PRO. Besides reducing production costs, the RR2 PRO cultivar is expected to provide social and environmental benefits including reductions in exposure, environmental contamination, pesticide use and CO2 emissions. A cost assessment of this technology should take into account the real benefit generated. Thus, the objective of this study was estimated economic indicators in a soybean system of RR2 PRO and RR1 in the state of Mato Grosso. Operational cost was evaluated by Instituto de Economia Agrícola (IEA) methodology. Mean profitability indicator was evaluated. The soybean system RR2 PRO presented lower total operational cost than the RR1 system, including lower cost per bag under the RR2 PRO system versus RR1. Favorable profitability was demonstrated by both RR2 PRO with insect resistance and RR1 without insect resistance. However, the results have shown that the insect-resistant soybean cultivar may offer more advantages than its counterpart without insect resistance
Mestre
Silva, João Ramos da Cruz. "Análise da expressão heteróloga de protéinas com domínios de ligação a RNA em Leishmania infantum". Centro de Pesquisas Aggeu Magalhães, 2014. https://www.arca.fiocruz.br/handle/icict/14347.
Texto completoFundação Oswaldo Cruz. Centro de Pesquisas Aggeu Magalhães. Recife, PE, Brasil
Os tripanossomatídeos possuem uma combinação não usual de mecanismos moleculares, e seus processos de regulação de expressão gênica ocorreram a nível pós-transcricional. Acredita-se que essa regulação envolva tanto o controle da estabilidade dos mRNAs, como sua tradução em proteínas, eventos em que atua a proteína de ligação à cauda poli-A (PABP - Poly-A Binding Protein), uma das principais proteínas de ligação a RNAs em eucariotos. Um grande número destas proteínas está presente nos tripanosomatídeos, se caracterizando por possuírem domínios típicos de ligação a RNA, como o domínio RRM (RNA Recognition Motif). Dentre estas se destacam as proteínas de ligação a sequências ricas em uridina (UBPs), que se mostraram capazes de interagir com homólogos de PABP. Outras proteínas hipotéticas contendo domínios de ligação a RNA foram identificadas em ensaios que buscavam parceiros diferenciais para os três homólogos de PABP de Leishmania. Este trabalho se propôs a contribuir na caracterização funcional das proteínas UBPs e das proteínas hipotéticas, através da otimização de sua expressão de forma heteróloga em L. infantum, fusionadas ao epítopo HA. Para isto, os genes codificantes dos três homólogos de UBPs, e de cinco outras proteínas de ligação a RNA que parecem interagir com PABPs, foram amplificados e clonados em vetor de expressão de Leishmania. As construções geradas foram transfectadas em L. infantum e a expressão de seis destas proteínas avaliada. Os resultados obtidos mostram uma variação no reconhecimento das proteínas geradas com anticorpos comerciais anti-HA, que parecem depender da sequência de aminoácidos da sua extremidade C-terminal. Diferenças significativas nos seus níveis de expressão também foram observadas. Entre os três homólogos de UBP, dois destes se mostraram mais abundantes enquanto que os três são representados por mais de uma banda, indicando possíveis modificações pós-traducionais
Maougal, Esma. "Synthèse et évaluation biologique de désoxynucléosides modifiés en 3’ par un motif 1,2,3-triazole : étude de dérivés cyclobuténiques en réaction de métathèse ROM-RCM". Nantes, 2013. http://www.theses.fr/2013NANT2006.
Texto completoAIDS and herpes are viral diseases related respectively to infection by the HIV virus and Herpes Simplex Virus (HSV). AZT and Acyclovir were the first antiretroviral molecules approved for the treatment of AIDS and Herpes simplex type 1 and 2. These nucleoside analogues, due to the absence of the OH group at the 3'-position, inhibit respectively reverse transcriptase and DNA polymerase thereby preventing the polymerization of the viral DNA. As part of the discovery of new molecules to complete the therapeutic arsenal directed to these two viral diseases, we focus our interest in the synthesis of a new families of antiretroviral analogues of AZT with 1,2,3-triazole-1,4-disubstituted moiety. These compounds were prepared starting from nucleoside alcyne and azide derivatives using Click Chemistry reaction. These analogues were tested against HIV in collaboration with Pr R. F. Schinazi (Emory Univ School of Medecine/Atlanta, USA) and against herpes in collaboration with Pr N. Bourgougnon (University of Bretagne Sud, Vannes). In other part of this work, we prepare bicyclic compounds using tandem ring opening-ring closing metathesis. Starting from cyclobutene substituted in its 3,4-positions with unsaturated oxygenated of nitrogenous chain, we synthesize a series of bicyclic (pyranic of pyridinic) compounds. These bicyclic compounds could be used as ligands or synthons of complex molecules
Zhang, Da Jiang. "Involvement of the Polypyrimidine Tract-Binding Protein-Associated Splicing Factor (PSF) in the Hepatitis Delta Virus (HDV) RNA-Templated Transcription". Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31095.
Texto completoCosta, Robson. "RPM". Florianópolis, SC, 2008. http://repositorio.ufsc.br/xmlui/handle/123456789/91656.
Texto completoMade available in DSpace on 2012-10-24T01:13:32Z (GMT). No. of bitstreams: 1 256920.pdf: 830860 bytes, checksum: f765edd72766a549358c3fb4e27af0bc (MD5)
O anonimato é um preocupação crescente nos atuais sistemas baseados na Internet. As redes de anonimato tradicionais, baseadas em misturadores ou multicast, possuem limitações de confiabilidade, confidencialidade e desempenho. A ampla escala de redes P2P pode ser usada para minimizar tais limitações, mas essas redes têm de lidar com o fenômeno do churn (entrada e saída de nós na rede) e a menor confiabilidade dos nós individuais (devido ao roteamento na camada de aplicação). Esta dissertação apresenta o RPM (Random Path + Multicast), um protocolo para comunicação anônima em sistemas P2P. Além do anonimato, o RPM tem por objetivo a resistência ao churn e a redução do custo computacional normalmente associado a sistemas de anonimato. Para o seu desenvolvimento, primeiramente foi realizada uma revisão bibliográfica de grande parte da literatura referente ao assunto abordado. Posteriormente foram definidos os objetivos gerais e específicos do projeto visando definir assim sua estrutura funcional. Ao final, foram realisados diversos testes através de simulações, os quais demonstraram que o RPM atinge eficazmente seus objetivos, especialmente com respeito à resistência ao churn.
Nguyen, Natalie N. M. "Intramolecular Diels Alder-ROM-RCM approach towards the synthesis of triquinanes, and, Magnesium mediated carbometallation-annulation for the synthesis of fused rings". Thesis, University of Ottawa (Canada), 2005. http://hdl.handle.net/10393/26991.
Texto completoBidaud, Laure-Amélie. "L'enfant ROM". Thesis, Lyon 3, 2012. http://www.theses.fr/2012LYO30019.
Texto completoWhat makes the legal analysis of the rights of the Roma Child so unique is that he is at the cross-road of several legal approaches. Indeed, the Roma Child is unique in the sense that he belongs to an ethnic and/or national minority, is less than 18 years old, in most cases is considered as a foreigner where he lives (whether from one of the European Union countries or not), all this to be put in perspective of his legal status of Child. If the integration of the fact that this child belongs to a « minority community » is very challengeable in regard to the National Legal Rights, it is obviously much more meaningful in regard to the international and European rights of the Minorities, both in terms of laws and jurisprudence of the European court of Justice. Furthermore, the legal rights of the Roma child as member of a minority are superseded by the rights of the children under the age of 18. However, the reality is sometimes not aligned with the legal principles when the actual circumstances of the presence of this child on the French territory expose him to treatment which are un-respectful to his status of child, and to the legal principles against discrimination. This is particularly true with respect to the laws regulating the entrance and circulation of foreigners on the French territory, which will collide with his rights to education, health, social benefits and protection against delinquency
Agrawal, Ravi Prakash. "Using finite element analysis of retroreflective raised pavement markers to recommend testing procedures for simulating their field performance". Texas A&M University, 2005. http://hdl.handle.net/1969.1/3730.
Texto completoJouini, Hana. "Radio Resource Management in LTE Networks : Load Balancing in Heterogeneous Cellular Networks". Thesis, Paris, CNAM, 2017. http://www.theses.fr/2017CNAM1153/document.
Texto completoHigh demands on mobile networks provide a fresh opportunity to migrate towardsmulti-tier deployments, denoted as heterogeneous network (HetNet), involving a mix of cell types and radio access technologies working together seamlessly. In this context, network optimisation functionalities such as load balancing have to be properly engineered so that HetNet benefit are fully exploited. This dissertation aims to develop tractable frameworks to model and analyze load balancing dynamics while incorporating the heterogeneous nature of cellular networks. In this context we investigate and analyze a class of load balancingstrategies, namely adaptive handover based load balancing strategies. These latter were firstly studied under the general heading of stochastic networks using independent and homogeneous Poisson point processes based network model. We propose a baseline model to characterize rate coverage and handover signalling in K-tier HetNet with a general maximum power based cell association and adaptive handover strategies. Tiers differ in terms of deployment density and cells characteristics (i.e. transmit power, bandwidth, and path loss exponent). One of the main outcomes is demonstrating the impact of offloading traffic from macro- to small-tier. This impact was studied in terms of rate coverage and HO signalling. Results show that enhancement in rate coverage is penalized by HO signalling overhead. Then appropriate algorithms of LB based adaptive HO are designed and their performance is evaluated by means of extensive system level simulations. These latter are conducted in 3GPP defined scenarios, including representation of mobility procedures in both connectedstate. Simulation results show that the proposed LB algorithms ensure performance enhancement in terms of network throughput, packet loss ratio, fairness and HO signalling
Bottke, Hans-Dieter. "Römische Mietshäuser die Wohnverhältnisse sozialer Unterschichten von der ausgehenden Republik bis zur hohen Kaiserzeit und deren bautechnische sowie ökonomische Ursachen /". [S.l. : s.n.], 1999. http://ub.uni-duisburg.de/diss/diss9910/.
Texto completoReusser, Christoph. "Der Fidestempel auf dem Kapitol in Rom und seine Austattung : ein Beitrag zu den Ausgrabungen an der Via del Mare und um das Kapitol 1926-1943 /". Roma : "L'Erma" di Bretschneider, 1993. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.
Texto completoHeik, Andreas. "RPM - Paketbau und Verwaltung". Universitätsbibliothek Chemnitz, 2006. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200601789.
Texto completoLindberg, Leif. "Modellering av A-ram". Thesis, Högskolan i Gävle, Akademin för teknik och miljö, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-8066.
Texto completoDahm, Rickard. "Autotuning of RPM controller". Thesis, Linköpings universitet, Fysik och elektroteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-101995.
Texto completoGentilhomme, O. J. P. "Turbine rim seal ingestion". Thesis, University of Sussex, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405976.
Texto completoChou, Paul L. (Paul Lee). "Low power ROM generation". Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/40995.
Texto completoBunazar, Mauricio Baptistella. "Da obrigação propter rem". Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/2/2131/tde-06022014-140824/.
Texto completoThe aim of this dissertation is to analyze the institute of the propter rem obligation through the light of the Brazilian positive Law. With that, it intends to provide a dogmatically consistent description of the institute. To achieve this goal, there were analyzed legal categories that, in place of propter rem obligation, are issued; including, the waiver and the discharging relinquishment that are stood out.
Chahine, Sandy y Selma Chowdhury. "RTOS med 1.5K RAM?" Thesis, KTH, Hälsoinformatik och logistik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-241439.
Texto completoInternet of Things (IoT) is becoming more common in today's society. More and more everyday devices are connected to the wireless network. This requires costeffective computing power, which means that it can be beneficial to investigate the microcontroller and how they would cope with this task. These can be seen as smaller compact computers which despite their size offer a lot of performance. This study aims to inform if any existing operating system can work together with the microcontroller PIC18F452 and how many processes that can run in parallel given the MCU's limited memory. A survey and an experiment were conducted to answer these questions. Different choice of methods was investigated and discussed to determine which method would generate the best results. A survey and an experiment were conducted to answer these questions. The experiments required a special development environment to be installed and the generic FreeRTOS distribution was ported to both the correct processor and the experimental card. The porting succeeded and experiments showed that the research question could be answered with a yes. You can run a real-time operating system on an MCU with only 1,5 kB RAM memory. During the work, the project also found that Amazon built its IoT on FreeRTOS. However, they had invested in a more powerful MCU. The effort would thus emphasize it as a more future-proof approach.