Дисертації з теми "Evolutive information"
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Thirion, Xavier. "Analyse comparative et evolutive de l'activite hospitaliere : a propos des methodes et des outils." Aix-Marseille 2, 1993. http://www.theses.fr/1993AIX20657.
Tolentino, Edilene Fernandes. "Estudo sobre a apropriação tecnológica em escolas de Diamantina - Minas Gerais." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2005. http://hdl.handle.net/10183/15526.
The exposure of school communities to new information and communication technologies has positive impact on technological appropriation. Our objective was to analyze the use of computer laboratories in three public schools in Diamantina. We have used the evolutive stages of the ACOT Project (Apple Classroom of Tomorrow) as parameters. The theoretical reference works from five evolutive stages: (1) exposure; (2) adoption; (3) adaptation; (4) appropriation and (5) innovation. These categories have derived from observations recorded during the 10-year period of the Apple Project. Each stage shows behaviors and attitudes which have gradually incorporated the new technologies. The source of data consists of (a) interviews with teachers, students, principals and mothers, and (b) field observations recorded between 2004 and 2005. The analytical procedure has searcherd for meaningful units of discourse. The stages of the ACOT Project may be used as parameters to show the technological appropriation in schools. In the three schools analyzed, there has been a significant appropriation of the use of new technologies in the classroom, thus allowing for innovation in the school environment and change of position in the teacher-student relashionship. This work has been carried out in Programa de Pós-Graduação em Educação (FACED/UFRGS) as part of the research area related to the use of computers in education and is associated with the Núcleo de Educação Digital.
Domínguez, Sal David. "Analysis and optimization of question answering systems." Doctoral thesis, Universitat Politècnica de Catalunya, 2010. http://hdl.handle.net/10803/78011.
Launay, Romain. "Computational characterization and understanding of protein assemblies : the case of the Escherichia coli Ubi metabolon involved in ubiquinone biosynthesis." Electronic Thesis or Diss., Toulouse, INSA, 2023. http://www.theses.fr/2023ISAT0055.
Protein-protein interactions (PPIs) and supramolecular assemblies are essential for the functions of living cells. They play an important role in various biological functions, such as signal transduction, cell-cell communication, transcription, replication and membrane transport. Determining and characterizing such interfaces remains a challenge in structural biology. However, advances in the development of computational methods and the power of the computing resources available today have led to a considerable improvement in the accuracy of in silico predictions of three-dimensional models of protein assemblies.In this thesis, the aim was to predict the structure of a supramolecular assembly, called the Ubi metabolon, involved in the ubiquinone (UQ8) biosynthesis pathway in Escherichia coli. Ubiquinone is a prenol with oxido-reducing properties, localized in membranes, and highly conserved throughout evolution but also in different cells of organisms. It is composed of two main parts, an aromatic group with oxido-reducing properties, known as quinone or polar head, and a polyisoprenoid tail which is hydrophobic in nature. In this study, we are interested in the final stages of the biosynthetic pathway, in particular the modifications (methylations and hydroxylations) of the polar head. These reactions take place within the Ubi metabolon. The latter is made up of seven different proteins (UbiE, UbiG, UbiF, UbiH, UbiI, UbiJ, UbiK) catalysing six consecutive enzymatic reactions.In this work, we sought to predict the structure of the metabolon and were thus able to propose a protein subset that we called the 'core subunit'. This sub-unit includes all the partners and could be biologically functional. In parallel, a study was carried out on the UbiJ-UbiK2 heterotrimer, an essential molecular brick of the Ubi metabolon. A three-dimensional model of UbiJ-UbiK2 was proposed. Using a multi-scale modelling study, it was shown that it could be involved in the release of ubiquinone from membranes. Finally, the last part of this work focused on studying the behavior of a particular family of enzymes, the class A flavin mono-oxygenases, to which UbiF, UbiH and UbiI belong. A comparative study between a representative enzyme from this family, called PHBH, and UbiI was carried out, concluding that interactions with partners were necessary to stabilize these proteins within the Ubi metabolon.Taken together, this work and the proposed hypotheses provide a new insight into the supramolecular organization of the Ubi metabolon, both structurally and functionally. Our results open up new prospects for their experimental study
SHABUNINA, EKATERINA. "Information Evolution Modeling, Tracking and Analyzing in Social Media Streams." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2018. http://hdl.handle.net/10281/199007.
Nowadays, User Generated Content is the main source of real time news and opinions on the world happenings. Social Media, which serves as an environment for the creation and spreading of User Generated Content, is, therefore, representative of our culture and constitutes a potential treasury of knowledge. Thus, analyzing the content spread in Social Media can bring unprecedented opportunities to many areas of research and application. This matter was explored from two different angles in the first phase of this PhD thesis. In particular, the first exploratory study has focused on the correlation between the performance of companies as expressed in Social Media posts and the Stock Market values movements of the same companies. Meanwhile, the second exploratory work of the first phase of this thesis analyzed different dimensions and their combinations of the information spread under a Social Media hashtag in time. The insights and conclusions highlighted by these first two studies on Social Media have served as the basis for the development of the main ideas in this PhD. As the core focus of this thesis we propose an approach for modeling, tracking and analyzing the information evolution over time in Social Media. In particular, we propose to model a Social Media stream as a text graph. A graph degeneracy technique is used to identify the temporal sequence of the core units of information streams represented by graphs. Furthermore, as the major novelty of this work, we propose a set of measures to track and evaluate quantitatively and qualitatively the evolution of information in time. An experimental evaluation on the crawled datasets from one of the most popular Social Media platforms proves the validity and applicability of the proposed approach.
Maitland, Kathleen M. "Information systems evolution." Thesis, Open University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289003.
Hrytsenko, Mikhail Alexandrovich, and Михайло Олександрович Гриценко. "Evolution of the information society." Thesis, National Aviation University, 2021. https://er.nau.edu.ua/handle/NAU/51706.
The evolution of cloud technology began in the 1950s with the introduction of mainframes at IBM. A mainframe is a server with a large amount of RAM and external memory. It is designed to solve problems related to the processing of large amounts of data. The operators of these machines have the ability to access the central computer through terminals, the only function of which was to provide access to additional operators to the mainframes. In most cases, the user did not need the full power of the mainframe. Therefore, «stupid» ports have made mainframes more costeffective, and cloud technologies have a chance for further development. The idea of an «intergalactic computer network» first originated in the 1960s with Joseph Licklider. He was responsible for setting up the Advanced Research Projects Agency (ARPANET) network. The essence of his concept was that all users from anywhere in the world should be interconnected and access programs and data on any site. The very idea of cloud services is associated with John McCarthy, a specialist in the theory of electronic computers. He suggested that computer computing would be available as a service in the future. This concept will form the basis of the SaaS model, which provides cloud software as a public service.
Еволюція хмарних технологій почалася в 1950-х роках з появи мейнфреймів в компанії IBM. Мейнфрейм - це сервер з великим об'ємом оперативної і зовнішньої пам'яті. Він призначений для вирішення завдань, пов'язаних з обробкою великих обсягів даних. Оператори цих машин мали можливість доступу до центрального комп'ютера через термінали, єдиною функцією яких було забезпечення доступу додаткових операторів до мейнфреймів. У більшості випадків користувачеві не потрібна повна потужність мейнфрейма. Тому "дурні" порти зробили мейнфрейми економічнішими, а хмарні технології мають шанс на подальший розвиток. Ідея "міжгалактичної комп'ютерної мережі" вперше виникла в 1960-х роках у Джозефа Ліклайдера. Він відповідав за створення мережі Агентства передових дослідницьких проектів (ARPANET). Суть його концепції полягала в тому, що всі користувачі з будь-якої точки світу повинні бути пов'язані між собою і мати доступ до програм і даних на будь-якому сайті. Сама ідея хмарних сервісів пов'язана з Джоном Маккарті, фахівцем з теорії електронних обчислювальних машин. Він припустив, що в майбутньому комп'ютерні обчислення будуть доступні як послуга. Ця концепція ляже в основу моделі SaaS, яка надає хмарне програмне забезпечення в якості публічної послуги.
Liao, Gang. "Information repository design for software evolution." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ34039.pdf.
Zander, Claudia. "Information measures, entanglement and quantum evolution." Diss., University of Pretoria, 2007. http://upetd.up.ac.za/thesis/available/etd-04212008-090506.
Nnatuanya, Ifechukwu. "Evolution of living information systems development." Thesis, Brunel University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412796.
Agrawal, Artika. "Intelligent Techniques for Data- Information- Knowledge Evolution." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306860521.
Gethers, Malcom Bernard II. "Information Integration for Software Maintenance and Evolution." W&M ScholarWorks, 2012. https://scholarworks.wm.edu/etd/1539720326.
Frisk, Tobias. "Metoder för reducerad träning vid Neuro-Evolution." Thesis, University of Skövde, University of Skövde, 1998. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-153.
Vid designande av artificiella nätverk (ANN) är en viktig fas att identifiera en bra topologi. Topologin har betydelse för hur väl ett ANN klara att klassificera tidigare osedd data och även hur väl ett ANN klarar av att klassificera generellt. Ett sätt att automatisera detta designarbete är att använda genetiska algoritmer. Att använda GA för att evolvera ANN kallas neuroevolution.
Vid användande av neuroevolution sker en automatisering av nätverksdesignen. Men eftersom GA använder en population, d.v.s. en mängd av nätverk i detta fall, och alla dessa nätverk behöver tränas ett antal träningsepoker så blir denna automatisering tids och resurskrävande. Just träningen av ANN har en stor betydelse för hur lång tid evolutionsprocessen tar.
I detta arbete har fyra olika metoder för reducering av träning vid neuroevolution identifierats. Av dessa identifierade metoder har tre metoder ansetts tillräckligt lovande att utföra tester med. Dessa tre kvarvarande har implementerats och testats på två olika problemtyper. Använda testproblem är åtta bitars paritetsproblem och ett klassificeringsproblem rörande klassificering av bilder på träd (tall och gran).
Metoderna har utvärderats teoretiskt och även baserat på resultat från experiment. Som bedömningskriteria har resulterande nätverks klassificeringsförmåga, storlek hos resulterande nätverk och hur stor minskningen av antal använda träningsepoker är.
Thorley, Joseph Lockwood. "Cladistic information, leaf stability and supertree construction." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322012.
Pukari, V. (Ville). "LTE evolution towards 5G." Master's thesis, University of Oulu, 2016. http://urn.fi/URN:NBN:fi:oulu-201604061384.
Mobiilien telekommunikaatiojärjestelmien kehitys on jatkuva prosessi ja tänä päivänä on paljon kysyntää lisätä uusia ominaisuuksia ja parannuksia kehittyneeseen pitkän aikavälin evoluutioon (Long Term Evolution Advanced, LTE-A), toisinsanoen 4G:hen. Telekommunikaatiojärjestelmien kehitys jatkuu uuden, viidennen sukupolven (5G) radioteknologialla ja uusimmat parannukset periytyvät LTE:stä osaksi 5G:tä. 5G-teknologian nähdään täyttävän monen eri langattoman viestinnän käyttäjäryhmän tarpeet esimerkiksi suurempien datanopeuksien, paremman luotettavuuden, liikkuvuuden, energiatehokkuuden ja turvallisuuden suhteen. Tämä työ esittelee 3rd Generation Partnership Projektin (3GPP) asettamat vaatimukset 5G:lle sekä tärkeimmät LTE-parannukset ja uudet ominaisuudet, joilla pyritään osittain täyttämään nämä vaatimukset. Tärkeimpien ominaisuuksien periaatteet selvitetään ja vaikutukset protokollatasoille 1 ja 2 analysoidaan lyhyesti. Yksi suurimmista mobiilin tietoliikennejärjestelmäkehityksen haasteista on virrankulutuksen minimoiminen. 3GPP on esitellyt useita menetelmiä ongelman ratkaisemiseksi, kuten esimerkiksi epäjatkuvan vastaanoton (Discontinuous Reception, DRX) mekanismin. Tämä työ esittelee virransäästötilan (PSM) toteutuksen 3GPP release 12:sta perustuvalla LTE-mobiililaitteen prototyypillä. Tämän ominaisuuden perusideana on mahdollistaa mobililaitteen meneminen valmiustilaan silloin kun ei ole tarpeellista kommunikoida verkon kanssa. Tämä lisää akunkestoa ja avaa uusia käyttötapauksia, kuten esimerkiksi LTE-sääasemat. Valmis ominaisuus varmennettiin yksikkötesteillä. Virrankulutus mitattiin virransäästötila päällä sekä pois päältä ja tulokset arvioitiin. Virrankulutuksen huomattiin laskeavan virransäästötilassa alemmalle tasolle kuin tilanteessa, jossa verkkoa ei kuunnella ja sopivilla PSM-ajastinarvoilla valmiustilan kestoa voidaan pidentää viikoilla tai jopa vuosilla
Ruiz, April M. "Social information gathering in lemurs /." St Andrews, 2009. http://hdl.handle.net/10023/908.
Frisch, Walter. "Co-Evolution of Information Revolution and Spread of Democracy. 33. Jahrestagung der Gesellschaft für Informatik an der Johann Wolfgang Goethe-Universität in Frankfurt am Main 29.9. - 2.10. 2003." Gesellschaft für Informatik, 2003. http://epub.wu.ac.at/3209/1/CO%2DEvolution%2DWFRISCH.pdf.
Moon, Hyun Jin. "Supporting schema evolution in information systems and historical databases." Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1790275571&sid=20&Fmt=2&clientId=1564&RQT=309&VName=PQD.
Klamser, Pascal. "Collective Information Processing and Criticality, Evolution and Limited Attention." Doctoral thesis, Humboldt-Universität zu Berlin, 2021. http://dx.doi.org/10.18452/23099.
In the first part, I focus on the self-organization to criticality (here an order-disorder phase transition) and investigate if evolution is a possible self-tuning mechanism. Does a simulated cohesive swarm that tries to avoid a pursuing predator self-tunes itself by evolution to the critical point to optimize avoidance? It turns out that (i) the best group avoidance is at criticality but (ii) not due to an enhanced response but because of structural changes (fundamentally linked to criticality), (iii) the group optimum is not an evolutionary stable state, in fact (iv) it is an evolutionary accelerator due to a maximal spatial self-sorting of individuals causing spatial selection. In the second part, I model experimentally observed differences in collective behavior of fish groups subject to multiple generation of different types of size-dependent selection. The real world analog to this experimental evolution is recreational fishery (small fish are released, large are consumed) and commercial fishing with large net widths (small/young individuals can escape). The results suggest that large harvesting reduces cohesion and risk taking of individuals. I show that both findings can be mechanistically explained based on an attention trade-off between social and environmental information. Furthermore, I numerically analyze how differently size-harvested groups perform in a natural predator and fishing scenario. In the last part of the thesis, I quantify the collective information processing in the field. The study system is a fish species adapted to sulfidic water conditions with a collective escape behavior from aerial predators which manifests in repeated collective escape dives. These fish measure about 2 centimeters, but the collective wave spreads across meters in dense shoals at the surface. I find that wave speed increases weakly with polarization, is fastest at an optimal density and depends on its direction relative to shoal orientation.
Swift, Adam Glen. "Mapping posthuman discourse and the evolution of living information." Thesis, Queensland University of Technology, 2006. https://eprints.qut.edu.au/16439/1/Adam_Swift_Thesis.pdf.
Swift, Adam Glen. "Mapping posthuman discourse and the evolution of living information." Queensland University of Technology, 2006. http://eprints.qut.edu.au/16439/.
Lee, Alexander. "The evolutionary ecology of animal information use and social dominance." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:1d2b343e-fe0a-4611-b1c7-b820da19e075.
Sardanyés, i. Cayuela Josep. "Dynamics, evolution and information in nonlinear dynamical systems of replicators." Doctoral thesis, Universitat Pompeu Fabra, 2009. http://hdl.handle.net/10803/7182.
In this thesis I have investigated several fields of biology that can be classified in the general subject of replicator nonlinear systems. The works presented in the thesis investigate several dynamical phenomena and evolutionary processes for RNA viruses, for hypercycles and for general models on antagonistic replicator dynamics. I have specifically investigated the dynamics of so-called quasispecies, used for the modelization of RNA populations. The works on hypercycles explore several phenomena related to previous events to the origin of life and to the appearance of the first living cell. By means of some ecologically-based mathematical models as well as of some computational models we also investigate the so-called Red Queen hypothesis for small, replicating-mutating entities. These studies are of interest in the context of prebiotic evolution and theoretical ecology.
Ghoneim, Ahmed Mohamed Ali. "Reflective and adaptive middleware for software evolution of information systems." [S.l.] : [s.n.], 2007. http://diglib.uni-magdeburg.de/Dissertationen/2007/ahmghoneim.htm.
Sardanyés, Cayuela Josep. "Dynamics, evolution and information in nonlinear dynamical systems of replicators." Doctoral thesis, Universitat Pompeu Fabra, 2009. http://hdl.handle.net/10803/7182.
In this thesis I have investigated several fields of biology that can be classified in the general subject of replicator nonlinear systems. The works presented in the thesis investigate several dynamical phenomena and evolutionary processes for RNA viruses, for hypercycles and for general models on antagonistic replicator dynamics. I have specifically investigated the dynamics of so-called quasispecies, used for the modelization of RNA populations. The works on hypercycles explore several phenomena related to previous events to the origin of life and to the appearance of the first living cell. By means of some ecologically-based mathematical models as well as of some computational models we also investigate the so-called Red Queen hypothesis for small, replicating-mutating entities. These studies are of interest in the context of prebiotic evolution and theoretical ecology.
Zhang, Guohua. "Exploratory Robotic Controllers : An Evolution and Information Theory Driven Approach." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112208/document.
This thesis is concerned with building autonomous exploratory robotic controllers in an online, on-board approach, with no requirement for ground truth or human intervention in the experimental setting.This study is primarily motivated by autonomous robotics, specifically autonomous robot swarms. In this context, one faces two difficulties. Firstly, standard simulator-based approaches are hardly effective due to computational efficiency and accuracy reasons. On the one hand, the simulator accuracy is hindered by the variability of the hardware; on the other hand, this approach faces a super-linear computational complexity w.r.t. the number of robots in the swarm. Secondly, the standard goal-driven approach used for controller design does not apply as there is no explicit objective function at the individual level, since the objective is defined at the swarm level.A first step toward autonomous exploratory controllers is proposed in the thesis. The Evolution & Information Theory-based Exploratory Robotics (Ev-ITER) approach is based on the hybridization of two approaches stemming from Evolutionary Robotics and from Reinforcement Learning, with the goal of getting the best of both worlds: (i) primary controllers, or crawling controllers, are evolved in order to generate sensori-motor trajectories with high entropy; (ii) the data repository built from the crawling controllers is exploited, providing prior knowledge to secondary controllers, inspired from the intrinsic robust motivation setting and achieving the thorough exploration of the environment.The contributions of the thesis are threefold. Firstly, Ev-ITER fulfills the desired requirement: it runs online, on-board and without requiring any ground truth or support. Secondly, Ev-ITER outperforms both the evolutionary and the information theory-based approaches standalone, in terms of actual exploration of the arena. Thirdly and most importantly, the Ev-ITER controller features some generality property, being able to efficiently explore other arenas than the one considered during the first evolutionary phase. It must be emphasized that the generality of the learned controller with respect to the considered environment has rarely been considered, neither in the reinforcement learning, nor in evolutionary robotics
Ruiz, April M. "Social information gathering in lemurs." Thesis, University of St Andrews, 2010. http://hdl.handle.net/10023/908.
Loukola, O. (Olli). "Information networks among species:adaptations and counter-adaptations in acquiring and hiding information." Doctoral thesis, Oulun yliopisto, 2014. http://urn.fi/urn:isbn:9789526204345.
Tiivistelmä Sosiaalinen informaationkäyttö on yleinen ilmiö eläinkunnassa, ja sitä tavataan aina hyönteisistä valaisiin. Yksilöt tarkkailevat ja kopioivat sekä lajitovereiden että toisen ekologialtaan samankaltaisen lajin yksilöiden käyttäytymistä erilaisissa tilanteissa, kuten pesäpaikan tai parittelukumppanin valinnassa. Sosiaalinen informaationkäyttö on adaptiivista ainoastaan ollessaan valikoivaa. Siksi on tärkeää selvittää kenen, koska ja ketä kannattaa kopioida, ja mitä ekologisia ja evolutiivisia seurauksia siitä koituu informaation lähteelle ja käyttäjälle. Väitöskirjassani tutkin kokeellisesti informaation hankkijan (kirjosieppo Ficedula hypoleuca) valikoivaa kopioimista ja siitä mahdollisesti johtuvaa informaation lähteen (talitiainen Parus major) vasta-adaptaatiota luonnonoloissa. Symbolikokeilla selvitin, että talitiaisten lajinsisäinen kopiointi on iästä ja sukupuolesta riippuvaa, mutta informaationlähteen havaittu kelpoisuus ei vaikuta kopioinnin todennäköisyyteen. Kirjosiepot puolestaan kopioivat valikoivasti keinotekoisesti luotuja tiaisten mieltymyksiä pesäpönttöön kiinnitettyjä symboleja kohtaan, riippuen tiaisten havaitusta manipuloidusta kelpoisuudesta (munamäärästä pesässä). Siepot kopioivat tiaisia, joiden pesässä on paljon munia (13 munaa), ja rejektoivat tiaisia (valitsevat vaihtoehtoisen symbolin), joilla munia on vähän (5 munaa). Tarjoamalla kirjosiepoille vaihtoehtoisia pesäpönttöjä osoitin, että sieppojen luontainen mieltymys vallata ja rakentaa pesänsä toisten pesien päälle ei ole sosiaalisen informaationkäytön muoto, vaan se näyttää olevan pesänrakennuksen kustannusten minimointia. Playback-kokeilla osoitin, että talitiaisten munienpeittelykäyttäytymisellä on useita funktioita. Se on vasta-adaptaatio kirjosiepon informaatioloisintaa vastaan ja toimii mahdollisesti suojana kylmää vastaan. Väitöskirjani tulokset osoittavat, että eläinten käyttäytymisen paljastama sosiaalinen informaatio on resurssi, jota voidaan hyödyntää tai salata. Se on myös uudenlainen ekologinen ja evolutiivinen tekijä, joka vaikuttaa eliöyhteisöjen muodostumiseen ja lajien koevoluutioon. Lajienvälinen valikoiva sosiaalinen informaationkäyttö -hypoteesi haastaa nykyisen koevoluutioteorian. Se ennustaa, että informaatiota hyödyntävän lajin ja informaationlähteen ominaisuudet voivat joko samankaltaistua tai erilaistua, informaationlähteen havaittavasta menestyksestä riippuen
Koirikivi, R. (Rainer). "The architecture and evolution of computer game engines." Bachelor's thesis, University of Oulu, 2015. http://urn.fi/URN:NBN:fi:oulu-201512112292.
Kaza, Siddharth. "Instance, Evolution, and Predictive Modeling of Social Networks." Diss., The University of Arizona, 2008. http://hdl.handle.net/10150/193625.
Delmestri, Antonella. "Data Driven Models for Language Evolution." Doctoral thesis, Università degli studi di Trento, 2011. https://hdl.handle.net/11572/368357.
Sirbu, Adina Iulia. "Corrective Evolution of Adaptable Process Models." Doctoral thesis, Università degli studi di Trento, 2013. https://hdl.handle.net/11572/367808.
Joy, Katherine H. "Topics in lunar evolution using sample analysis and remotely sensed information." Thesis, University College London (University of London), 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.606784.
Robson, Nicola. "Information books for children : their visual anatomy and evolution (1860-2005)." Thesis, University of Reading, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627998.
Klamser, Pascal [Verfasser]. "Collective Information Processing and Criticality, Evolution and Limited Attention. / Pascal Klamser." Berlin : Humboldt-Universität zu Berlin, 2021. http://d-nb.info/1239644736/34.
Lockyer, Rebecca. "Transmission of chemosensory information in Drosophila melanogaster : behavioural modification and evolution." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/transmission-of-chemosensory-information-in-drosophila-melanogaster-behavioural-modification-and-evolution(45101800-3913-4a6b-8c46-52153cbcc3f3).html.
Hudson, Corey M. "Informatic approaches to evolutionary systems biology." Thesis, University of Missouri - Columbia, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3577951.
The sheer complexity of evolutionary systems biology requires us to develop more sophisticated tools for analysis, as well as more probing and biologically relevant representations of the data. My research has focused on three aspects of evolutionary systems biology. I ask whether a gene’s position in the human metabolic network affects the degree to which natural selection prunes variation in that gene. Using a novel orthology inference tool that uses both sequence similarity and gene synteny, I inferred orthologous groups of genes for the full genomes of 8 mammals. With these orthologs, I estimated the selective constraint (the ratio of non-synonymous to synonymous nucleotide substitutions) on 1190 (or 80.2%) of the genes in the metabolic network using a maximum likelihood model of codon evolution and compared this value to the betweenness centrality of each enzyme (a measure of that enzyme’s relative global position in the network). Second, I have focused on the evolution of metabolic systems in the presence of gene and genome duplication. I show that increases in a particular gene’s copy number are correlated with limiting metabolic flux in the reaction associated with that gene. Finally, I have investigated the proliferative cell programs present in 6 different cancers (breast, colorectal, gastrointestinal, lung, oral squamous and prostate cancers). I found an overabundance of genes that share expression between cancer and embryonic tissue and that these genes form modular units within regulatory, proteininteraction, and metabolic networks. This despite the fact that these genes, as well as the proteins they encode and reactions they catalyze show little overlap among cancers, suggesting parallel independent reversion to an embryonic pattern of gene expression.
Esplan, Nicolas. "Les métamorphoses de la relation de soin au prisme de l'évolution numérique." Thesis, Montpellier 1, 2011. http://www.theses.fr/2011MON10028.
The exchange and the sharing of information became nowadays an act of current management for the whole professional world. However, from the legal point of view, this situation calls due to its complexity. Through the regulation of the information, the dematerialization of the exchanges, the increase of the actors, the professionals of the law have to wonder concerning the interaction between the possible technical and the statutory imperatives. Domain among so many others, the sanitary world constitutes undoubtedly a space allowing to study this movement in two time, in particular when we observe more particularly the relation of care. Indeed, the digital evolution which applies henceforth to this relation really constitutes a significant stage in the long historic development of the medical science. Of course, mixing quite at once modernization and transformation, it obliges a reflection where becomes entangled commonness and originality. But this reflection turns out necessary, because if the digital development participates in a better quality of the care and in a better coordination, he does not have to make forget that he is above all in the service of the individuals
Dimitrov, Dimitar. "Towards cloud application architectural patterns: transfer, evolution, innovation and oblivion." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH. Forskningsmiljö Informationsteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-27643.
Marjamäki, P. (Pekka). "Evolution and trends of business intelligence systems:a systematic mapping study." Master's thesis, University of Oulu, 2017. http://urn.fi/URN:NBN:fi:oulu-201705031654.
Alhindawi, Nouh. "Supporting source code comprehension during software evolution and maintenance." Thesis, Kent State University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3618939.
This dissertation addresses the problems of program comprehension to support the evolution of large-scale software systems. The research concerns how software engineers locate features and concepts along with categorizing changes within very large bodies of source code along with their versioned histories. More specifically, advanced Information Retrieval (IR) and Natural Language Processing (NLP) are utilized and enhanced to support various software engineering tasks. This research is not aimed at directly improving IR or NLP approaches; rather it is aimed at understanding how additional information can be leveraged to improve the final results. The work advances the field by investigating approaches to augment and re-document source code with different types of abstract behavior information. The hypothesis is that enriching the source code corpus with meaningful descriptive information, and integrating this orthogonal information (semantic and structural) that is extracted from source code, will improve the results of the IR methods for indexing and querying information. Moreover, adding this new information to a corpus is a form of supervision. That is, apriori knowledge is often used to direct and supervise machine-learning and IR approaches.
The main contributions of this dissertation involve improving on the results of previous work in feature location and source code querying. The dissertation demonstrates that the addition of statically derived information from source code (e.g., method stereotypes) can improve the results of IR methods applied to the problem of feature location. Further contributions include showing the effects of eliminating certain textual information (comments and function calls) from being included when performing source code indexing for feature/concept location. Moreover, the dissertation demonstrates an IR-based method of natural language topic extraction that assists developers in gaining an overview of past maintenance activities based on software repository commits.
The ultimate goal of this work is to reduce the costs, effort, and time of software maintenance by improving the results of previous work in feature location and source code querying, and by supporting a new platform for enhancing program comprehension and facilitating software engineering research.
xu, rui. "WEBEVO: TAMING WEB APPLICATION EVOLUTION VIA SEMANTIC CHANGE DETECTION." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1595242401982817.
Zhang, Zhewei. "THREE ESSAYS ON DIGITAL EVOLUTION." Diss., Temple University Libraries, 2016. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/391804.
Ph.D.
Digital products are rapidly shaping our world into a ubiquitous computing world. Because of its unique characteristics, digital artifacts are generative and highly evolving through the recombination of existing elements as well as by the invention of new elements. In this thesis, I first propose an evolutionary view to examine how digital artifacts can evolve over time based on the discussion of limitations of existing approaches. Then, inspired by contemporary evolutionary thinking and phylogenetics in biology, I develop a set of analytic approaches to classify different evolutionary patterns based on the evolutionary rate and evolutionary direction of the digital artifact. In three studies, I investigate digital evolution in specific contexts: web Mashup development, open source software development and digital design practice. I conclude my thesis by highlighting the contributions of my work, and summarizing current limitations and opportunities for future research.
Temple University--Theses
Delmestri, Antonella. "Data Driven Models for Language Evolution." Doctoral thesis, University of Trento, 2011. http://eprints-phd.biblio.unitn.it/473/1/PhD-Thesis_Uploaded.pdf.
Sirbu, Adina Iulia. "Corrective Evolution of Adaptable Process Models." Doctoral thesis, University of Trento, 2013. http://eprints-phd.biblio.unitn.it/947/1/PhD_Thesis_Sirbu.pdf.
Fuxin, Freddy. "Evolution and communication of geometry based product information within an extended enterprise /." Luleå, 2005. http://epubl.luth.se/1402-1544/2005/04.
Fuxin, Freddy. "Evolution and communication of geometry based product information within an extended enterprise." Licentiate thesis, Luleå tekniska universitet, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-16965.
Godkänd; 2001; 20070313 (ysko)
Pechenick, Eitan. "Exploring the Google Books Corpus: An Information-Theoretic Approach to Linguistic Evolution." ScholarWorks @ UVM, 2015. http://scholarworks.uvm.edu/graddis/525.
Lovelock, Peter. "The evolution of China's national information infrastructure (NII) : a policy-making analysis /." Thesis, Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B20715389.
Zammit, Alessandra <1978>. "Time evolution of compromise effect: essays on the role of information availability." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/436/1/Tesi_Zammit.pdf.