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Sledevič, Tomyslav. "Objektų sekimo vaizde algoritmų įgyvendinimo LPLM įrenginiu tyrimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20120726_163207-46414.
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Magistro baigiamojo darbo tikslas – įgyvendinti realiuoju laiku veikiančius objektų sekimo vaizde algoritmus lauku programuojamų loginių matricų įrenginyje (LPLM) ir ištirti šių algoritmų veikimą. Iškelti uždaviniai pasiekti 3 etapais. Atlikta analitinė objektų sekimo vaizde literatūros apžvalga, išanalizuoti objektų sekimo vaizde algoritmai bei jų įgyvendinimo galimybės LPLM įrenginiuose. Sukurti algoritmai ir programos įgyvendintos viename ir keliuose LPLM įrenginiuose (sinchroniškai) taikant VHDL programavimo kalbą ir veikia realiu laiku. Atlikti sukurtų algoritmų tyrimai ir gautų rezultatų analizė. Ištirtas objektų sekimo stabilumas keičiant apšviestumo lygį, fono sudėtingumą, objekto spalvą, judesio greitį, atstumą iki kameros ir posūkio kampą. Darbo apimtis – 69 psl. teksto be priedų, 72 iliustr., 70 bibliografinių šaltinių, 3 priedai.<br>The aim of master’s thesis is to investigate the object tracking methods and implement the object tracking algorithms in field programmable gate array (FPGA) devices for real-time execution. The aim is achieved by performing 3 tasks. The analytical review of object tracking methods is performed, reviewing the abilities of algorithms implementation on FPGAs. The object tracking algorithms are implemented in VHDL and distributed on one and few FPGA chips in parallel and works in real-time. The implemented algorithms are investigated and results are analyzed. The stability of different object tracking is investigated by changing the illumination, background complexity, object color, moving velocity, distance to camera and rotation angle. Thesis consists of: 69 p. text without appendixes, 72 figures, 70 bibliographical entries, 3 appendixes included.
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Rossi, Carolina. "As proteínas do vitelo do nematoide entomopatogênico Heterorhabditis baujardi LPP7." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/42/42135/tde-24022015-143446/.
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Heterorhabditis é um gênero de nematoides entomopatogênicos, simbiontes de bactérias do gênero Photorhabdus. Juntos, infectam e matam artrópodes. A linhagem LPP7 de H. baujardi foi isolada na cidade de Monte Negro (RO). A vitelogênese compreende o acúmulo de reservas dentro do ovócito em crescimento. A vitelogenina é uma lipoproteína transportadora de lipídeos para o ovócito, formando o vitelo. Sequenciamos um fragmento de 800pb do gene vit-6 de LPP7, codificante do fim do polipeptídeo homólogo ao VT3 de O. tipulae ou ao YP88 de C. elegans. Seu transcrito possui 61% de identidade com VIT-6 de O. tipulae CEW1 e 46% de identidade com VIT-6 de C. elegans. As vitelogeninas purificadas de LPP7 mostram três bandas com pesos moleculares próximos às vitelogeninas de O. tipulae (VT1, VT2 e VT3). Mas, ao contrário do que foi mostrado em O. tipulae, onde a banda VT1 é apresenta um polipeptídeo, VT1 de LPP7 aparentemente contém um par de bandas com massas moleculares quase idênticas, como ocorre com a proteína YP170 de C. elegans.<br>Heterorhabditis is a genus of entomopathogenic nematodes that are associated with bacteria of the genus Photorhabdus. Together, they infect and kill arthropods. Heterorhabditis baujardi strain LPP7 was isolated in Monte Negro (RO). The yolk reserves are transported to the growing oocyte by a lipoprotein called vitellogenin. We have cloned and partially sequenced a fragment of 800pb of the vit-6 gene from LPP7. This fragment contains a portion of a homologous to those coding for the vitellins VT3 of O. tipulae and the YP88 C. elegans polypeptides. The polypeptide coded by the sequenced fragment showed that it has 61% identity to VIT-6 protein of O. tipulae CEW1 and 46% of identity to VIT-6 of C. elegans. The purified proteins of LPP7 show three bands with migrations close to the vitellins of O. tipulae (VT1, VT2 and VT3). However, unlike what was shown in O. tipulae where the VT1 band is comprised of a single polypeptide, LPP7 VT1 apparently contains a pair of bands with almost identical molecular masses as occurs with the homologous vitellin of C. elegans YP170.
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Fink, Rainer. "Untersuchungen zu LPP-Flugtriebwerksbrennkammern unter erhöhtem Druck." [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=962103896.
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Rosendahl, Emil, and Anik Esh. "Lokal Pedagogisk Planering : En textanalys av tio LPP." Thesis, Gymnastik- och idrottshögskolan, GIH, Institutionen för idrotts- och hälsovetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-5273.
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Syfte och frågeställningar Syftet med denna studie är att undersöka några idrottslärares tolkning av den nationella kursplanen för idrott och hälsa och hur denna tar sig i uttryck genom LPP. Studien utgår från nedanstående frågeställningar 1. Vad innehåller en LPP? 2. Hur skiljer sig LPP från den nationella kursplanen? Metod I studien har vi utgått från en kvalitativ textanalys ifrån tio olika LPP, med hjälp av Googles-sökmotor har vi sökt på ”pedagogisk planering åk 7-9 idrott och hälsa” för att få tillgång till det material som skall analyseras. Studien utgick ifrån de tio första LPP som dök upp i resultatet från sökningen. Resultat Genom analys av LPP har det visat sig att idrottsläraren har olika stora möjligheter att fritt formulera en egen LPP som inte alls behöver vara identisk med den nationella kursplanen. En tolkning vid arbetet med LPP, är att se det som ett uttryck eller försök till att förändra skolans styrning av ämnet. Överlag tolkas det som att lärare runt om i Sverige har använt sig av LPP för att förenkla och förtydliga ämnets mål. Genom att ha skrivit en LPP fick lärarna en annan typ av ansvar då de inte bara följde kursplanen utan även tolkade den på ett eget sätt. En LPP kunde vara nästan ”identisk” som den nationella kursplanen, men även ha fria tolkningar av kursplanen. Detta berodde på hur långt utanför ramarna läraren valde att gå. Slutsats Utifrån resultatet av studien kan det sammanfattas att det varierar väldigt mycket hur skolornas LPP ser ut. Generellt sett är det svårt att få fram ett tydligt svar för hur det ser ut i hela landet. Detta beror på att den insamlade data från nätet var väldigt begränsad och i liten omfattning. Det kan tolkas att Skolverket inte uppmanar lärarna att skriva LPP då det inte förekommer på deras hemsida överhuvudtaget.
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Syrjänen, Elmeri. "Attention to the periphery attenuates the EPN and LPP." Thesis, Stockholms universitet, Psykologiska institutionen, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-59197.
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Current research shows that emotions have an important role in guiding attention and cognitions especially when the emotional stimuli are affective. Load theory proposes that when the perceptual load on attention is sufficiently high, irrelevant emotional stimuli is no longer attended to and thus will not produce a distracting effect. In this study 18 participants performed two discrimination tasks where their attention was manipulated spatially. To investigate the effect of spatial attention on ERP components, emotional pictures in 14 different semantic categories were shown while EEG was recorded. The results indicate that a successful perceptual load was achieved, reflected in the behavioral data that show there was a clear difference in performance between tasks. Further the results indicate that a strong effect was achieved in the mean amplitudes of both EPN and LPP corresponding to the semantic categories of pictures. Critically directing the attention to the periphery while emotionally salient pictures were presented attenuated the mean amplitude of both EPN and LPP.
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BEZERRA, Dagmar Dnalva da Silva. "Formação de professores no projeto LPPE: as concepções reveladas nos discursos dos docentes." Universidade Federal de Goiás, 2007. http://repositorio.bc.ufg.br/tede/handle/tde/1995.
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Previous issue date: 2007-08-25<br>This thesis aims to understand the education views, the formation and the teacher in the LPPE (Portuguese acronym for State Parceled out Full Licenciatura degree) Project as well as in the participants discourses of this formation program. The Project has been developed in Parceled out Licenciatura degree, in a fast way, with the goal of forming a reflexive teacher, having in mind the practice as a generator of reflection. The research, in the Formation and Teacher Professionalization investigation area of study in the School of Education, was made through a bibliographic revision of theorists such as BRZEZINSKI, CONTRERAS, DIAS SOBRINHO, LIBÂNEO, LOUREIRO, PIMENTA and others; documental analyses of the LPPE Project and the national legislation; and, field research and case study through structured interview in the University Campus of the Goiás State University and in a
state school, both in Aparecida de Goiânia, Goiás. The data from the research were analyzed under the perspective of the dialectic-historical materialism. The comprehended conceptions revealed that the Project was implemented as an answer to the in force legislation without, however, forming the concept of reflexibility in the teacher.<br>Pretendemos apreender as concepções de educação, de formação e de professor do Projeto LPPE e dos discursos dos participantes deste programa de formação. O Projeto se desenvolveu em cursos de licenciatura parcelada, em tempo aligeirado, visando formar um professor reflexivo, pressupondo a prática como geradora de reflexão. A pesquisa, na linha Formação e Profissionalização Docente , foi realizada a
partir da revisão bibliográfica, tendo como referencial teórico: BRZEZINSKI, CONTRERAS, DIAS SOBRINHO, LIBÂNEO, LOUREIRO, PIMENTA e outros; análise documental do Projeto e legislação nacional; e, pesquisa de campo, estudo de
caso, no PU/UEG e em uma escola estadual, ambos em Aparecida de Goiânia/GO, através de entrevista estruturada. Os dados resultantes da pesquisa foram analisados sob a perspectiva do materialismo histórico-dialético. As concepções apreendidas revelaram que o Projeto foi implantado para atender a legislação vigente sem, contudo, formar no professor a concepção de reflexividade.
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Kong, Lingwen. "The UPM/LPM Framework on Portfolio Performance Measurement and Optimization." Thesis, Uppsala University, Department of Mathematics, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-121228.
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Mukherjee, Amrita [Verfasser], and Gerd [Akademischer Betreuer] Jürgens. "Role of Drosophila LPPs in Germ Cell. Migration and Survival / Amrita Mukherjee ; Betreuer: Gerd Jürgens." Tübingen : Universitätsbibliothek Tübingen, 2013. http://d-nb.info/1162844744/34.
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Garcia-Murillas, Isaac. "Functional analysis of lipid phosphate phosphohydrolases (LPP) in Drosophila melanogaster phototransduction cascade." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613148.
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Feng, Xiaohua. "Etude des propriétés thermoélectriques des revêtements de matériaux de type β-FeSi2". Thesis, Belfort-Montbéliard, 2016. http://www.theses.fr/2016BELF0288/document.
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L'incertitude de l'énergie mondiale avec l'augmentation constante de la demande d'énergie déclenche la recherche de technologies de conversion d'énergie à haut rendement. Les dispositifs thermoélectriques (TE) peuvent jouer un rôle très important dans la collecte et la valorisation de l'énergie car ils peuvent être employés pour récupérer la chaleur résiduelle. Par exemple, la quantité de chaleur émise sous forme de déchets par les différents moteurs thermiques est évaluée en centaines de millions de MWh /an.Cette thèse vise à démontrer la faisabilité de fabrication des systèmes de récupération de la chaleur issue des déchets à l'échelle industrielle en utilisant des générateurs thermoélectriques (TE). Les techniques de fabrication proposées sont basées sur l'utilisation de technologies avancées comme le frittage par spark plasma, le broyage, la fusion laser sélective et la technologie de projection thermique. Ces techniques rendent possible l'élaboration de revêtements de matériau thermoélectrique avec des performances thermoélectriques supérieures et une flexibilité forte liées aux choix multiples de tailles, de formes et de matériaux.Nous nous sommes intéressés à l'étude du matériau semi-conducteur ß-FeSi2 car il présente un coefficient de mérite fort dans une plage de température de 300-800oC qui est la température des gaz en sortie de moteur voiture.Les techniques de SLM (Selective Laser Melting), de broyage, de frittage et de frittage flash (SPS) ont été successivement utilisées pour aboutir à l'élaboration de l'alliage ¿-FeSi2. Les revêtements ont ensuite été obtenus par la technique de projection plasma sous basse pression.Concernant le revêtement formé à partir de l'alliage par procédé LPPS, la transformation de phase de la phase cubique -ferrosilicium et de la phase quadratique ¿-Fe2Si5 en phase orthorhombique ß-FeSi2 se produit en obéissant aux réactions péritectique et eutectique. Après recuit sous température et temps appropriés, les revêtements présentent une phase complète ß-FeSi2 sur le substrat céramique.En outre pour une application à grande échelle, il est nécessaire de déposer ce type de revêtement sur un substrat en acier inoxydable et il convient dans ce cas d'utiliser un masque approprié pour fabriquer le dispositif thermoélectrique<br>The uncertainty in the global energy with the constant increase in energy demand triggers the search for energyconversion technologies with high efficiency. The thermoeletrical devices (TE) can play a relevant role in thecollection and recovery of energy because they can be used to recover waste heat. For example, the amount of heatemitted as waste by different ombustion engines is evaluated hundreds of millions of MWh / year.This thesis aims to demonstrate the feasibility of anufacturing heat recovery systems from waste on an industrialscale using thermoelectric generators (TE). The proposed manufacturing techniques are based on the use ofadvanced technologies such as spark plasma sintering, crushing, selective laser melting and thermal spraytechnology. These techniques make possible the development of thermoelectric material coatings with superiorthermoelectric performance and high flexibility related to multiple choices of sizes, shapes and materials.The study of semiconductor ß-FeSi2 material was conducted in this goal because it has a strong merit coefficient(ZT) in the temperature range of 300-800°C which is the temperature of the output gas of the cars.Selective Laser Melting, sintering and spark plasma sintering (SPS) were successively used to lead to themanufacture of ¿-FeSi2 alloy. The coatings were then obtained by low pressure plasma spraying.Concerning the coating formed from the alloy, the phase transformation of the cubic phase ¿-ferro-silicon and thetetragonal phase ¿-Fe2Si5 in the orthorhombic phase ß-FeSi2 is produced by obeying the eritectic and eutecticreactions. After annealing under suitable temperature and time, the coatings sprayed on the ceramic bstratepresent a complete phase ß-FeSi2.In view of a large-scale application, it is necessary to spray this type of coating on a stainless steel substrate and inthis case to use a suitable mask for making the appropriate thermoelectric device
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Gutiérrez, Martínez Enric. "Función de la fosfatasa de fosfolípidos 3 (LPP3) en las etapas tempranas de la vía secretora." Doctoral thesis, Universitat de Barcelona, 2013. http://hdl.handle.net/10803/134353.
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El complejo de Golgi participa en el procesamiento, la distribución y el transporte de lípidos y proteínas hacia su destino final dentro de la célula. El transporte desde el Golgi está mediado por intermediarios de transporte (ITs), principalmente vesículas y túbulos. La formación de ITs se inicia con la gemación de la vesícula o el túbulo, a continuación se produce su elongación y finalmente tiene lugar su fisión. Este proceso requiere de una compleja maquinaria molecular en la que intervienen las llamadas proteínas de cubierta, proteínas motoras asociadas al citoesqueleto, y los lípidos de las membranas. Respecto al papel de los lípidos, éstos pueden actuar tanto en el reclutamiento de proteínas citosólicas que participan en la formación de los ITs, como dotando a la membrana de las propiedades físicas óptimas para su deformación en vesículas o túbulos. La curvatura de membrana está facilitada por lípidos con estructura cónica como el ácido lisofosfatídico (LPA), el ácido fosfatídico (PA) y el diacilglicerol (DAG). El DAG cumple una doble función en la formación de ITs desde el Golgi: por una parte actúa en el reclutamiento y la activación de la proteína cinasa D (PKD), necesaria para la correcta fisión de vesículas desde la red trans-Golgi (TGN). Por otra parte ayuda a la formación de curvatura negativa.
El DAG en el Golgi está estrechamente regulado por diferentes vías que controlan su formación y metabolismo. Una de estas vías está mediada por las llamadas fosfatasas del ácido fosfatídico (PAPs), que producen DAG a partir de defosforilar el PA. Existen dos familias de proteínas que actúan como fosfatasas del ácido fosfatídico. Las enzimas de la familia PAP1son citosólicas, su actividad catalítica es dependiente de Mg+2, se inhiben por N-etilmaleimida (NSF) y el PA es su único sustrato. Las enzimas PAP2 son proteínas transmembrana, independientes de Mg+2 e insensibles a NSF. Las PAP2 también se conocen como fosfatasas de lípidos fosfato (LPPs), ya que además del PA pueden también catalizar la defosforilación de otros lípidos como la ceramida-1-fosfato (C1P), la esfingosina-1-fosfato (S1P) y el ácido lisofosfatídico (LPA), aunque con diferentes afinidades (PA ~ LPA > C1P > S1P).
La inhibición de las PAP por el agente farmacológico propanolol, indica que el DAG que proviene de esta vía es necesario para la formación de ITs desde el Golgi al retículo endoplasmático (RE). En esta tesis hemos demostrado que uno de los miembros de la familia PAP2, la enzima PAP2b, también conocida como LPP3, se localiza en diferentes compartimentos de la vía secretora, desde los sitios de salida del RE (ERES) hasta el complejo de Golgi. El silenciamiento de LPP3: (i) reduce la formación de túbulos desde el compartimento intermedio entre el RE y el Golgi (ERGIC) y el complejo de Golgi, y a su vez incrementa la longitud de aquéllos túbulos formados desde el Golgi; (ii) causa un retraso en el transporte dependiente de Rab6 de la subunidad B de la toxina Shiga desde el Golgi al RE, sin afectar al transporte anterógrado de RE a Golgi; y (iii) a nivel ultraestructural incrementa el número de perfiles vesiculares asociados a las cisternas del Golgi. El silenciamiento de la LPP3 también reduce la síntesis de novo de DAG y los niveles de DAG en el Golgi. Además, también hemos demostrado que la sobreexpresión de un mutante catalíticamente inactivo de la LPP3 reproduce los efectos observados tanto con el silenciamiento de la LPP3, como al inhibir la actividad catalítica de las PAP2 por el propanolol. De forma conjunta, nuestros resultados demuestran que la LPP3, a partir de regular la homeostasis de DAG, participa en la formación de ITs en diferentes compartimentos de la vía secretora, regulando el transporte retrógrado entre el RE y el Golgi.<br>The Golgi complex is involved in the processing, sorting and transport of membrane components (lipids and proteins) to appropriate subcellular destinations, and is also a membranous platform for signalling, metabolic and cytoskeleton proteins. Transport to and from the Golgi complex is mediated by transport carriers (vesicles and/or tubules), which are generated in sequential stages beginning with the formation of a bud, followed by its elongation, constriction and final fission. Lipids play an essential role in this process through different mechanisms: they can recruit cytosolic proteins, modulate protein functions and modify the architecture and physical properties of the membrane bilayer. Thus, membrane curvature is facilitated by conical lipid molecules such as lysophosphatidic acid (LPA), phosphatidic acid (PA) and diacylglycerol (DAG). In previous results of our group we have demonstrated that the DAG produced by the phosphatidic acid phosphatase type 2 family of proteins (PAP2) is necessary for the retrograde transport from the Golgi to the endoplasmic reticulum (ER). In this thesis we have demonstrated that that the PAP2 family member lipid phosphate phosphatase 3 (LPP3, also known as PAP2b) localizes in compartments of the secretory pathway from ER export sites to the Golgi complex. The depletion of human LPP3: (i) reduces the number of tubules generated from the ER–Golgi intermediate compartment and the Golgi, with those formed from the Golgi being longer in LPP3-silenced cells than in control cells; (ii) impairs the Rab6-dependent retrograde transport of Shiga toxin subunit B from the Golgi to the ER, but not the anterograde transport of VSV-G or ssDsRed; and (iii) induces a high accumulation of Golgi-associated membrane buds. LPP3 depletion also reduces levels of de novo synthesized DAG and the Golgi-associated DAG contents. Remarkably, overexpression of a catalytically inactive form of LPP3 mimics the effects of LPP3 knockdown on Rab6-dependent retrograde transport. We conclude that LPP3 participates in the formation of retrograde transport carriers at the ER–Golgi interface, where it transitorily cycles, and during its route to the plasma membrane.
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Sand, Anders. "Are late positive potentials to emotional pictures affected by spatial cues?" Thesis, Stockholm University, Department of Psychology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-28176.
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<p>Perceived distance between motivationally significant stimuli andobserver has been shown to affect arousal. To study effects ofperceived motion and distance on affective picture processing, eventrelatedpotentials were recorded in two experiments as neutral andunpleasant pictures were presented with different cues to induceperceptions of changes in spatial distance. The cues were either thetarget picture or independent circles that increased or decreased insize, or the target picture presented in a static small or large size. Inboth experiments, late positive potentials at centroparietal electrodeswere more pronounced, and self-reports more negative, forunpleasant compared to neutral stimuli. The results of theexperiments do not, however, provide evidence that inducedperceptions of motion or distance affect late positive potentials.</p>
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Elmstedt, Kerstin. "Lärares uppfattningar av lokala pedagogiska planer som ett medel att utveckla intresset för naturorienterande ämnen." Thesis, Linköpings universitet, Tema vatten i natur och samhälle, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-82110.
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I detta arbete görs en mindre studie av lärares uppfattning gällande planering och genomförande av NO-undervisning, i samband med arbetet med lokala pedagogiska planer. Intervjuer med lärare i grundskolan har genomförts semistrukturerade. Syftet var att undersöka hur lärare beskriver arbetet kring att upprätta lokala planer och hur de försöker hitta vägar för att stimulera ungdomar i deras intresse för naturvetenskap. De lärare som intervjuats är samtliga kopplade till ett pågående skolutvecklingsprojekt i Östergötland, KNUT-projektet, vilket jag kommit i kontakt med och kunnat använda i mig av i min studie. De intervjuade har varit yrkesverksamma lärare mellan 12 och 25 år. Tidigare studier har bl.a. visat att elever är intresserade av naturvetenskap i sitt vardagliga liv men inte i skolan. Forskning visar att fler och fler väljer bort att vidareutbilda sig inom naturvetenskapliga områden vilket går emot samhällets ökande behov av utbildade personer inom naturvetenskapliga arbeten. För att stimulera till ökat intresse finns studier och forskning att tillgå och några av dessa har jag använt mig av i mitt arbete. Resultatet av min studie indikerar att lärare inte upplever de nya kursplanerna i NO som svåra att läsa och förstå men flera upplever det svårt att veta hur mycket som ska tas upp och på vilken nivå undervisningen ska ligga. Lärarna upplever bedömningen svår och de saknar riktlinjer för den gentemot kursplanerna. Hur lärarna stimulerar eleverna för ökat intresse av NO-ämnena är väldigt olika. Flera lärare vill arbeta mer varierat och framför allt mycket praktiskt. För samtliga lärare genomfördes det få eller inga studiebesök utanför skolan. Diskussion som inlärningsmetod användes av några lärare och då främst mellan lärare och elev vid laborationer eller genomgångar. Denna arbetsmetod var dock ovanlig. Dessa resultat diskuteras gentemot tidigare studier och forskning samt skolverkets styrdokument.
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Lejnarová, Šárka. "Modely diskrétní binární volby." Master's thesis, Vysoká škola ekonomická v Praze, 2007. http://www.nusl.cz/ntk/nusl-1615.
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Ve své diplomové práci se zabývám modely diskrétní binární volby. Zkoumám je nejprve z teoretického hlediska, jaká je jejich podstata, jaká jsou jejich specifika a problémy. Postupně rozebírám jednotlivé modely diskrétní binární volby a to lineární pravděpodobnostní model, logitový model a probitový model. Zabývám se jejich odhadem, testováním významnosti jednotlivých koeficientů a shodou modelů s daty. V praktické části se zaměřuji na problematiku životního prostředí a třídění odpadu. Aplikuji jednotlivé modely na získaná data a snažím se vysvětlit, na čem závisí volba jedince mezi ?třídím odpad? a nebo ?netřídím odpad?. Na základě analýzy poté doporučuji, na koho a jakým způsobem zacílit osvětu.
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Mair, Patrick, and Reinhold Hatzinger. "Extended Rasch Modeling: The eRm Package for the Application of IRT Models in R." Department of Statistics and Mathematics, WU Vienna University of Economics and Business, 2007. http://epub.wu.ac.at/332/1/document.pdf.
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Item response theory models (IRT) are increasingly becoming established in social science research, particularly in the analysis of performance or attitudinal data in psychology, education, medicine, marketing and other fields where testing is relevant. We propose the R package eRm (extended Rasch modeling) for computing Rasch models and several extensions. A main characteristic of some IRT models, the Rasch model being the most prominent, concerns the separation of two kinds of parameters, one that describes qualities of the subject under investigation, and the other relates to qualities of the situation under which the response of a subject is observed. Using conditional maximum likelihood (CML) estimation both types of parameters may be estimated independently from each other. IRT models are well suited to cope with dichotomous and polytomous responses, where the response categories may be unordered as well as ordered. The incorporation of linear structures allows for modeling the effects of covariates and enables the analysis of repeated categorical measurements. The eRm package fits the following models: the Rasch model, the rating scale model (RSM), and the partial credit model (PCM) as well as linear reparameterizations through covariate structures like the linear logistic test model (LLTM), the linear rating scale model (LRSM), and the linear partial credit model (LPCM). We use an unitary, efficient CML approach to estimate the item parameters and their standard errors. Graphical and numeric tools for assessing goodness-of-fit are provided. (author's abstract)<br>Series: Research Report Series / Department of Statistics and Mathematics
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Danzo, Sarah. "The Association Between Normative Variation in Parenting and Youth Emotional Reactivity Assessed via EEG." Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case1497470727473162.
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Tata, Nikhitha. "MicroCuckoo Hash Engine for High-Speed IP Lookup." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78255.
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The internet data traffic is tripling every two years due to the exponential growth in the number of routers. Routers implement the packet classification methodology by determining the flow of the packet, based on various rule checking mechanisms that are performed on the packet headers. However, the memory components like TCAMs used by these various rules are very expensive and power hungry. Henceforth, the current IP Lookup algorithms implemented in hardware are even though able to achieve multi-gigabit speeds, yet suffer with great memory overhead. To overcome this limitation, we propose a packet classification methodology that comprises of MicroCuckoo-hash technique, to route packets. This approach alleviates the memory requirements significantly, by completely eliminating the need for TCAM cells. Cuckoo hash is used to achieve very high speed, hardware accelerated table lookups and also are economical compared to TCAMs. The proposed IP Lookup algorithm is implemented as a simulation-based hardware/software model. This model is developed, tested and synthesized using Vivado HLS tool.<br>Master of Science
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Neves, Maira Rodrigues de Camargo. "Estudo de atividades amidásicas na linhagem MN7 de Photorhabdus luminescens luminescens, isolada da linhagem LPP7 de Heterorhabditis baujardi." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/42/42135/tde-28112014-145511/.
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Photorhabdus é um gênero de enterobactérias simbiontes de Heterorhabditis, um gênero de nematoides entomopatogênicos. Dentre as enzimas secretadas por P. luminescens TTO1, destaca-se PrtA, uma metaloprotease que pertence a subfamília das serralisinas. PrtS, uma protease capaz de induzir uma forte resposta de melanização no inseto, foi identificada em P. temperata Az29 mas não em P. luminescens TTO1. Neste trabalho foram detectadas e caracterizadas bioquimicamente algumas proteases secretadas pelo isolado MN7 de P. luminescens luminescens. Foram detectadas duas atividades mais proeminentes: uma de 50 kDa, e outra de 38 kDa. Com o sequenciamento do genoma desta bactéria, pudemos confirmar a presença no genoma de genes codificando proteínas de alta identidade com as descritas PrtA e PrtS, de massas similares às detectadas nas nossas zimografias. As proteases são inibidas por inibidores específicos de metaloproteases. P. luminescens MN7 apresenta secreção, portanto, de uma protease já descrita algumas vezes, e de outra presente apenas em P. temperata Az29.<br>Photorhabdus is a genus of Enterobacteriaceae, symbionts of Heterorhabditis, a genus of entomopathogenic nematodes. Among the enzymes secreted by P. luminescens TTO1 stands out PrtA, a metalloprotease that belongs to the subfamily of serralysins. PrtS, a protease capable of inducing a strong melanotic response from the insect, was identified in P. temperata Az29 but not in P. luminescens TTO1. In this work were detected and characterized biochemically few isolated proteases secreted by P. luminescens luminescens MN7. Two most prominent activities were detected: one with 50 kDa and one with 38 kDa. With the sequencing of the genome of MN7, we could confirm the presence in the genome of genes encoding proteins with high identity to PrtA and PrtS already described, with similar masses to those detected in our zimographies. These proteases are inhibited by specific inhibitors of metalloproteases. P. luminescens MN7 secretes a protease already described a few times, and other present only in P. temperata Az29.
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Ng, Piu Lawrence, and 吳彪. "The development and implementation of ISO 9000 in the LPM branch, civil engineering department." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31268249.
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Silva, Leonardo Ivo de Carvalho. "Caracterização do escoamento isotérmico com elevada rotação gerado em um combustor do tipo LPP." reponame:Repositório Institucional da UnB, 2011. http://repositorio.unb.br/handle/10482/13038.
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Dissertação (mestrado)—Universidade de Brasília, Faculdade de Tecnologia, Departamento de Engenharia Mecânica, 2011.<br>Submitted by Alaíde Gonçalves dos Santos (alaide@unb.br) on 2013-03-11T14:10:13Z
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2011_LeonardoIvodeCarvalhoSilva.pdf: 4180099 bytes, checksum: 8073385b1dc556ad2b6e9204e7e5c28d (MD5)<br>No presente trabalho experimental foi estudado o escoamento com elevada rotação
considerado regular aos processos de queima em um combustor do tipo LPP, também
conhecido como combustor de baixo NOx, para analisar a funcionalidade do seu sistema
responsável pela geração do escoamento reativo. As medições experimentais foram
realizadas com o uso das técnicas de anemometria a temperatura constante (ATC) e
velocimetria por imagem de partículas (PIV). O sistema gerador do escoamento reativo (ou sistema gerador de fluxo) é composto por um swiler axial e pela câmara de pré-mistura do combustor em questão. O swirler foi projetado para fornecer uma mistura reativa em diferentes níveis de rotação e a câmara de pré-mistura foi idealizada para garantir um tempo satisfatório de residência para o processo
de mistura, levando-se em conta as possíveis configurações de rotação do escoamento
oferecidas pelo swirler. Para a realização do trabalho o sistema gerador de fluxo foi desacoplado do combustor LPP (montado no laboratório de combustão do Departamento de Engenharia Mecânica da Universidade de Brasília), para a instalação dos equipamentos de medição à saída da câmara de pré-mistura. Foram utilizados dois ATC's do tipo Dantec, modelo Mini CTA 54T30, trabalhando em paralelo por meio de um sensor de dois fios, e um laser do
tipo Nd:YAG com comprimento de onda igual a 532nm de coloração verde. O corante
utilizado para a fluorescência foi a Rodamina B e para a velocimetria foram utilizadas partículas formadas com glicerina. Nas seções de ATC e de PIV os dados foram capturados no plano longitudinal do escoamento para três intensidades de rotação, caracterizadas pelo adimensional número geométrico de swirl (S’=0,88; 1,05 e 1,26). As experimentações permitiram observar o característico campo de velocidades e as estruturas existentes à região nuclear do escoamento. Permitiram também confirmar a condição de regularidade do vórtice com base na evolução contínua das freqüências dos harmônicos dominantes (400Hz; 500Hz e 560Hz), observadas em seu núcleo. Estas constatações, segundo a literatura, indicam a existência de um vórtice pleno, conhecido como o vórtice colapsado, que é responsável pela diminuição das emissões poluentes e
pelo processo de sustentação da chama no combustor LPP. Demonstrou-se, portanto, que o sistema de fluxo é capaz atender às exigências de funcionamento do combustor de baixo NOx instalado no laboratório de combustão, por disponibilizar o escoamento adequado ao funcionamento desta tecnologia. _______________________________________________________________________________________ ABSTRACT<br>In this present experimental work, the flow with high rotation, applied on the
processes of combustion in a combustor-type LPP, also known as low NOx combustor,
was studied aiming to validate the functionality of the system, responsible for the generation of reactive flow. Measurements were made using the techniques of constant temperature anemometry (CTA) and particle image velocimetry (PIV).
The system of reactive flow generator (or flux generator system) is composed by a
axial swirler and pre-mixing chamber of the mentioned combustor. The swirler is designed
to provide a reactive mixture at different levels of rotation and the pre-mix chamber was designed to ensure a satisfactory residence time for the mixing process, taking into account the possible spin configurations offered by the swirl flow.
To perform this work, the flux generator system was decoupled of the LPP
combustor, which is mounted at the laboratory of combustion of the Mechanical
Engineering Department of Brasilia University, and the measure equipments were installed at the pre-mix chamber out. Two CTA's like Dantec, Mini CTA 54T30 model, were used working in parallel via a double wire sensor, and a laser type Nd: YAG with a wavelength equal to 532nm green color to. The dye used for fluorescence process was the Rhodamine B and for the processes with the velocimetry technique were used particles made by glycerin. In the CTA and PIV sections the relative data were captured in the longitudinal plane of the flow for three rotation levels, characterized by the dimensionless geometric swirl number (S’=0,88; 1,05 e 1,26). The working fluid corresponds to the air flow under the isothermal condition. The experiments allowed observing the characteristic velocity field and the structures at nuclear region of the flow. The condition of regularity of the vortex was confirmed by continuous evolution of the frequencies of the dominants harmonic in function of S’ (400 Hz; 500 Hz e 560 Hz), observed at the flow’s core. As noted in the literature, these facts showed that the flux system is able to provide the correct flow to the operation of the LPP turbine technology, and therefore this system has the requirements to work for the low NOx combustor, installed in the laboratory of combustion.
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Ng, Piu Lawrence. "The development and implementation of ISO 9000 in the LPM branch, civil engineering department /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18835892.
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JACQUEMARD, PAUL. "Fluid field analysis on a flexible combustor for a hybrid Solar / Brayton system : A numerical study." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-287853.
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Recent improvements to concentrating solar dish systems lead to further focus on hybridization systems for small-scale power generation applications. Variability of the solar load creates new requirements for combustion systems. This thesis presents a CFD simulation of the air flow inside a new combustor design for the combination of an impinging air solar receiver and a MGT. The system consists of a LPP tubular combustor with radial main swirler and central pilot burner. Focus is made on the pressure loss at the downstream impinging cooling wall for appropriate flow distribution between reacting and bypass air. Heat transfer is not studied due to lack of time. A fully-hexahedral multi-zones mesh of the system without fuel injection has been generated with Ansys ICEM software, making use of its O-grid capabilities. A realizable k-epsilon model is used for turbulence modelling. Several impinging hole’s diameters are studied to find the right balance between the two streams. Streamlines are also observed to confirm the location of recirculation zones and recommend design improvements.<br>Nya förbättringar av koncentrerade solskålssystem leder till ytterligare fokus på hybridsystem för småskaliga applikationer för elproduktion. Ojämn solstrålning skapar nya krav på förbränningssystem. Detta examensarbete presenterar en CFD-simulering av luftflödet i en ny förbränningsdesign för en kombination av en solfångare med forcerad konvektionskylning och en mikrogasturbin (MGT). Systemet består av en LPP-rörbrännare med radiellt virvelsystem och central pilotbrännare. Studien fokuserar på tryckförlusten vid slaghålsväggen, som används för kylning vid förbränning, och lämplig flödesfördelning mellan reagerande- och förbigående flöde. Värmeöverföring studeras inte på grund av tidsbrist. Ett helt sexkantigt nät med flera zoner i systemet utan bränsleinsprutning har genererats med Ansys ICEM-programvara som använder O-nätfunktioner. En realiserbar k-epsilon-modell används för turbulensmodellering. Flera slaghålsdiametrar studeras för att hitta rätt balans mellan de två strömmarna. Även strömlinjer observeras för att bekräfta placeringen av återcirkulationszoner och kunna rekommendera förbättringar av designen.
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Stiegler, Zachary Joseph. "The policy and practice of community radio: localism versus nationalism in U.S. broadcasting." Diss., University of Iowa, 2009. https://ir.uiowa.edu/etd/1086.
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While localism is a particularly important aspect of Congress' mandate that broadcasters serve "the public interest, convenience or necessity," the history of US radio broadcasting exhibits persistent tensions between nationalism and localism, which have intensified in recent decades. Current concerns about the loss of localism in US radio broadcasting invite us to reinterpret US radio history from a local perspective. This dissertation traces the tensions between localism and nationalism in US radio broadcasting through four forms of radio broadcasting constructed specifically to serve localism and the public interest: the 10-watt Class D license, full power public radio as typified by National Public Radio, the Low Power FM (LPFM) license established in 2000, and the controversial use of low power radio by religious broadcasters.
The Class D license, US public radio, and LPFM all originated with the stated objective of serving the public in meaningful ways which commercial broadcasting cannot. Yet to date, each of these has failed to meet this goal, whether due to legislative action, organizational failure or conflict amongst broadcast entities. Further, each of these case studies illustrates the conflict between nationalism and localism ever-present in efforts to establish radio broadcasting services that adequately and meaningfully serve local publics. Through a critical-historical analysis of the tensions between nationalism and localism in US radio broadcasting, this dissertation offers an understanding for the reasons and implications of the continued failure of radio's ability to serve local communities in the United States. In doing so, I look to the failures of the past to suggest how we may revise the current LPFM license to effectively serve local publics.
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Dahlin, Klein Miriam. "Slöjdlärarare och den lokala pedagogiska planeringen : Ett arbete i hur slöjdlärare förhåller sig till den lokala pedagogiska planeringen i undervisningen." Thesis, Högskolan Dalarna, Pedagogiskt arbete, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:du-12727.
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Syftet med mitt arbete är att få inblick i hur slöjdlärare arbetar med den Lokala pedagogiska planeringen (LPP) och vilken funktion den fyller. Studiens fokus ligger i hur slöjdlärana använder den lokala pedagogiska planeringen under lektioner och hur de arbetar fram den. För att få svar på mina frågeställningar genomförde jag intervjuer med slöjdlärare. Mitt resultat visar att slöjdlärana inte får mycket tid till att skriva sin LPP vilket leder till att de ofta får sitta hemma på sin fritid och skriva. De anser att den är ett bra stöd för dem själva och även för eleverna under lektionerna. Undersökningen visar även att lärarna har nytta av den lokala pedagogiska planeringen, som de menar är ett uppdrag som påförts dem "uppifrån". Genom undersökningen har jag fått större förståelse för vilken nytta den lokala pedagogiska planeringen kan ha för lärare och elever i undervisningen.
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Johnson, Patricia Lynn. "The Influence of Individual Differences on Emotional Processing and Emotional Memory." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5245.
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Emotional material is better remembered than neutral material and some suggest this is reflected in different Event Related potentials (ERPs) to affective stimuli by valence. Inconsistent results may be due to individual differences, specifically the behavioral inhibition/behavioral activation (BIS/BAS) motivational system. This study sought to examine the relationship between motivational systems, emotional memory, and psychophysiological response to emotional pictures. While using EEG recording, subjects were shown 150 affective pictures and given a recall and yes/no recognition task after a 20 and 30-minute delay, respectively. Overall, differences were found by valence, but not consistently based on individual trait. Controlling for arousal and mood, results did not support previous research that suggested high BIS was more responsive to negative pictures while higher BAS was more responsive to positive images. The role of ERP methodology and arousal are discussed, along with future directions.
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Breton, Audrey. "Bases neuronales et cognitives du traitement de la hiérarchie sociale chez l'humain." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10343.
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Ma thèse porte sur une dimension fondamentale de la structure des groupes sociaux : la hiérarchie. Chez l'être humain, les hiérarchies sociales régissent en profondeur les interactions. Pour naviguer avec succès dans son environnement, il doit être en mesure de repérer précisément les positions hiérarchiques des autres membres de son groupe. Ce travail de thèse vise à caractériser certains mécanismes neuronaux, comportementaux et physiologiques impliqués dans l'analyse d'un indice hiérarchique. Pour préciser la nature du traitement de la hiérarchie, j'ai exploré son influence sur différentes étapes de la perception des visages. Je me suis tout d'abord intéressée au décours temporel du traitement neuronal des visages dans un contexte hiérarchique. Deux études menées en électroencéphalographie m'ont permis d'identifier les potentiels neuronaux et les composants oscillatoires évoqués par la perception de visages associés soit, à un rang hiérarchique établi à l'issue d'une compétition, soit à un statut social induit par la profession. Une étude réalisée ensuite en oculométrie avait pour but de capturer l'influence de la hiérarchie sur des mécanismes fins du contrôle de l'attention visuelle. J'ai étudié à la fois l'exploration visuelle de classements hiérarchiques incluant le participant, et celle de visages associés à des rangs hiérarchiques différents. Enfin, j'ai tenté de déterminer si un signal ou une situation d'asymétrie hiérarchique véhicule une valence émotionnelle et motivationnelle non neutre susceptible d'induire des variations de certains paramètres physiologiques, comme le rythme cardiaque ou la réponse électrodermale<br>Hierarchy is a key organizational feature of social groups. In order to successfully navigate their social environment, humans must precisely read the hierarchical position of other during social interaction. This present thesis intends to characterize the neural correlates as well as the early physiological and behavioral mechanisms involved in the processing of social rank. The influence of hierarchy was mainly investigated in the context of face perception. To begin, my focus was on the time course of neuronal processing of faces embedded in a hierarchical context. Using eletroencephalography in two studies, it has been possible to identify evoked neuronal potentials and oscillatory components in response to faces varying in hierarchical rank, established through competition or social status induced by profession. The next study used eye-tracking methodology to explore the influence of hierarchy on the subtle mechanisms of visual attention control. I aimed at characterizing the visual scanning pattern of hierarchical rankings (during a competition) and of faces associated with different hierarchical ranks. Finally, I tried to determine if a hierarchical signal or a social asymmetrical situation conveyed an emotional/motivational valence. During face perception and a minimal social interaction, I examined if this particular dimension of hierarchy generated variations of physiological activity, such as heart rate and skin conductance response
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Martig, Sandra. "Analysis of lipoprotein LppC, a reactive antigen of Mycoplasma mycoides subspecies mycoides SC, the etiological agent of contagious bovine pleuropneumonia /." [S.l.] : [s.n.], 2001. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.
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Voigt, Bernhard. "Sensitivity of the IceCube detector for ultra-high energy electron-neutrino events." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2008. http://dx.doi.org/10.18452/15850.
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Zur Zeit wird das IceCube Neutrino-Teleskop am Südpol im Eis der Antarktis installiert, die Hälfte des Detektors ist bereits im Betrieb. Bei Fertigstellung im Jahr 2011 wird mehr als 1 km^3 Eis mit Photovervielfachern instrumentiert sein. IceCube bietet damit eine einzigartige Möglichkeit, die Quellen der kosmischen Strahlung mit Hilfe hochenergetischer Neutrinos zu finden. Im Rahmen dieser Arbeit wurde die Sensitivität des kompletten Icecube Detektors für den Nachweis eines diffusen Flusses von Elektronneutrinos bestimmt. Ziel war es, die Eigenschaften des Detektors für Energien oberhalb von einem PeV zu bestimmen. Besonderes Augenmerk wurde dabei auf die Simulation von elektromagnetischen Kaskaden gelegt, die in Neutrino-Nukleon-Wechselwirkungen auftreten. Da existierende Parametrisierungen die Unterdrückung der Wechselwirkungsquerschnitte durch den LPM-Effekt nicht beinhalten, wurde eine Simulation des Energieverlustes von elektromagnetischen Kaskaden für Energien oberhalb von 1 PeV entwickelt, die entsprechend modifizierte Wirkungsquerschnitte verwendet. Die Analyse, die in dieser Arbeit vorgestellt wird, nutzt die komplette Information des durch einen Photovervielfacher aufgezeichneten Ladungsverlaufes aus, die mit der Datennahme des IceCube Detektors zur Verfügung steht. Es werden neue Methoden entwickelt, um zwischen atmosphärischen Myonen-Hintergrund- und Signalereignissen von Kaskaden aus Neutrino-Nukleon-Wechselwirkungen zu unterscheiden. Die erreichbare Sensitivität innerhalb einer Laufzeit von einem Jahr ist 1.5*10^-8 E^-2 GeV/(cm^2 sr s) in einem Energiebereich von 16 TeV bis 13 PeV für den Nachweis von Elektronneutrinos eines diffusen Flusses. Eine Verbesserung von mindestens einer Größenordnung wird erwartet, wenn alle Neutrinofamilien in die Analyse einbezogen werden. Damit sollte eine Sensitivität erreicht werden, die auf dem gleichen Niveau einer diffusen Myonenanalyse liegt.<br>IceCube is a neutrino telescope currently under construction in the glacial ice at South Pole. At the moment half of the detector is installed, when completed it will instrument 1 km^3 of ice providing a unique experimental setup to detect high energy neutrinos from astrophysical sources. In this work the sensitivity of the complete IceCube detector for a diffuse electron-neutrino flux is analyzed, with a focus on energies above 1 PeV. Emphasis is put on the correct simulation of the energy deposit of electromagnetic cascades from charged-current electron-neutrino interactions. Since existing parameterizations lack the description of suppression effects at high energies, a simulation of the energy deposit of electromagnetic cascades with energies above 1 PeV is developed, including cross sections which account for the LPM suppression of bremsstrahlung and pair creation. An attempt is made to reconstruct the direction of these elongated showers. The analysis presented here makes use of the full charge waveform recorded with the data acquisition system of the IceCube detector. It introduces new methods to discriminate efficiently between the background of atmospheric muons, including muon bundles, and cascade signal events from electron-neutrino interactions. Within one year of operation of the complete detector a sensitivity of 1.5*10^-8 E^-2 GeV/(cm^2 sr s) is reached, which is valid for a diffuse electron-neutrino flux in the energy range from 16 TeV to 13 PeV. Including all neutrino flavors in this analysis, an improvement of at least one order of magnitude is expected, reaching the anticipated performance of a diffuse muon analysis.
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Jeandel, Xavier. "Quelques aspects de la pulvérisation des liquides dans un système annulaire : instabilité de surface - encapsulation - concept LPP." Rouen, 2000. http://www.theses.fr/2000ROUES071.
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La problématique posée par la réduction des polluants et principalement de l'oxyde d'azote émis par les moteurs rencontres dans le secteur aéronautique a motivé ce travail de thèse. Notre intérêt s'est porte sur la formation du mélange comburant carburant et s'est élargi pour répondre à des questions plus fondamentales concernant la formation d'un spray à partir d'un système liquide annulaire bordé par un écoulement d'air d'énergie cinétique plus importante que le liquide. Le premier volet de ce travail porte sur l'étude d'un injecteur réel, dit "injecteur LPP", où la réduction de l'oxyde d'azote repose sur la réalisation d'un mélange comburant carburant en dessous de la stœchiométrie. Le nuage diphasique, forme de gouttelettes de kérosène entraînées par un écoulement d'air, est étudié expérimentalement au moyen de diagnostics optiques utilisant les propriétés de diffraction de la lumière. Plusieurs configurations des écoulements d'air sont étudiées et la structure du nuage à l'intérieur de l'injecteur est identifiée. Le second volet se place dans une problématique amont. Il permet d'approcher plus simplement le système liquide rencontré dans l'injecteur réel. Une nappe liquide de géométrie annulaire bordée par deux écoulements d'air coaxiaux est étudiée expérimentalement. Un schéma d'évolution de la nappe est proposé. L'ensemble des situations rencontrées est répertorié sous la forme d'une cartographie établie en fonction des paramètres du système liquide. Un modèle permet de prédire un temps caractéristique de l'évolution de la nappe. Le troisième et dernier volet aborde le problème d'instabilités de Kelvin-Helmholtz se développant à l'interface d'une nappe annulaire de liquide visqueux.
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Ferreira, Marcelo Costa. "Desenvolvimento e caracterização de uma câmara de combustão DLN – Dry Low Nox com tecnologia LPP – Lean Premixed Prevaporized." reponame:Repositório Institucional da UnB, 2007. http://repositorio.unb.br/handle/10482/1498.
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Dissertação (mestrado)—Universidade de Brasília, Faculdade de Tecnologia, Departamento de Engenharia Mecânica, 2007.<br>Submitted by Tania Milca Carvalho Malheiros (tania@bce.unb.br) on 2009-05-11T14:07:05Z
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Previous issue date: 2007-12<br>O atual estágio de desenvolvimento econômico brasileiro mostra-se favorável ao emprego,
em maior escala, da tecnologia de geração distribuída. Isto se deve, em parte, ao aumento da demanda de energia elétrica, maior disponibilidade de gás natural, tarifas diferenciadas para os horários de ponta, entre outros atrativos. Uma alternativa para geração elétrica, em
franco desenvolvimento, são as microturbinas que operam na faixa de 25 a 1000 kW. O
presente trabalho consistiu no desenvolvimento e caracterização de uma câmara de combustão de microturbinas a gás do tipo DLN – Dry Low NOx com tecnologia LPP – Lean Premixed Prevaporized. Os principais objetivos foram: projetar e caracterizar queimadores individuais que operem no modo ultra-pobre, com chama estabilizada por gerador de vórtices (swirler); dimensionar o tubo de chama do combustor de forma a operar no modo pré-misturado; projetar o queimador piloto para transição do modo de queima pobre para pré-misturado e auxiliar a estabilidade operacional da câmara nos diversos regimes de carga; instrumentar adequadamente a bancada de microturbina para a caracterização dos queimadores e do envelope operacional da unidade em diferentes níveis
de “carga”; caracterizar o conjunto de queimadores pobre, queimador piloto de pré-mistura e, por último, avaliar a transição entre modos de operação (ultra pobre e pré-misturado). Após a identificação do envelope de estabilidade operacional do combustor, variaram-se alguns parâmetros do processo na busca da minimização dos índices de emissões de NOx e CO. Em regime estável, nos melhores casos, obteve-se menos de 23 ppm de NOx,
corrigido para 15% de O2 e menos de 67 ppm de CO, também corrigido para 15% de O2.
_______________________________________________________________________________________ ABSTRACT<br>The actual economic development stage Brazilian is favorable to the employment, on a larger scale, of the distributed generation technology. This is due, in part, to the increase in electricity demand, greater availability of natural gas, differentiated rates for the pick load
times, among others. An alternative for electricity generation, in continuous growth, are the microturbines which covers de power range from 25 to 1000 kW. The present work consisted on the development and characterization of a combustion chamber of microturbine gas generator of the type DLN (Dry Low NOx) based on LPP (Lean
Premixed Prevaporized) technology. The main objectives were: to design and to
characterize individual burners to operate in lean mode with the flame stabilized by means of a swirler device; to design the fire tube to operate in premixed combustion mode; to
design the pilot burner for the transition between operating modes as well as to help
stabilize the flame at several load regimes; to set an appropriate instrumentation for the
apparatus as to facilitate burners and unit operational range characterization, to investigate the performance of the lean, pilot and premixed burners, and, lastly, to evaluate the stability of the system when changing the regime of operation (lean-lean to premixed). After identification of the stable operational range of the gas turbine combustor some process parameters were varied in searching for low emissions of NOx and CO. In stable regimes, for the best cases, it was obtained less than 23 ppm of NOx, corrected to 15% O2 and less than 67 ppm of CO, also corrected to 15% O2.
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Nelson, Renee. "Neurocognitive Examination of Attentional Bias and Inhibitory Control Alterations in Prescription Opioid Dependence." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37478.
Full textAbstract:
Prescription opioid (PO) abuse is a growing public health concern worldwide as evidenced by an increasing number of opioid-related hospital admissions with a striking lack of research examining the neural basis underlying cognitive symptomatology. Drugs of abuse, through their impact on the dopaminergic system, are thought to disrupt the cognitive network regulating impulse control and incentive salience through inhibition of goal-oriented behaviour and drug-induced attentional biases. The objective of the present study is to examine neurocognitive processes in PO abusers (vs. healthy controls) by relying on the enhanced temporal resolution (1ms) of event-related potentials (ERPs) to track information processing abnormalities associated with cognitive control. In a naturalistic clinical study, 16 patients actively using prescription opioids and 16 healthy controls (matched for age, gender, educational level and smoking status) were assessed using a Go/NoGo and cue reactivity paradigm. Analysis revealed no significant differences in N2 or P3 amplitude, measures of inhibitory control, between groups after successful NoGo trials and no significant differences in ERN or Pe amplitude, measures of error processing, between groups after unsuccessful NoGo trials. Cue reactivity analysis of attention-related ERP components in patients demonstrated significantly (p<0.005) smaller P2 amplitudes, indexing the commencement of attentional processing, for drug pictures compared to neutral and affective pictures. Furthermore, stimulus type did not significantly modulate LPP amplitudes, indexing sustained attention, in patients however arousal ratings for drug pictures were positively correlated with LPP amplitudes in patients. These ERP results of altered cognitive control and incentive salience suggest the neural mechanisms underlying these cognitions are affected by chronic opioid abuse. Investigating the cognitive abnormalities experienced by PO abusers is an important factor in understanding the neural correlates of substance abuse and in predicting successful outcomes to ensure the best chance at long-term recovery for addicted individuals.
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Raldiris, Tarah L. "Focused Attention vs. Open Monitoring: An Event-Related Potential Study of Emotion Regulation by Two Distinct Forms of Mindfulness Meditation." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/4863.
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This study investigated the effects of two novel forms of 8-week mindfulness meditation training, focused attention (FA) and open monitoring (OM), relative to an established training, mindfulness-based cognitive therapy (MBCT), on early emotional reactivity to negative emotional images as assessed by electroencephalography (EEG). Data on the late-positive potential (LPP) were analyzed to address whether the three mindfulness interventions attenuated the LPP from pre- to post-intervention, and if significant differences existed between groups in LPP at post-intervention. Rather than an attenuation, results indicated an average increase in LPP amplitude from pre- to post-intervention. No significant differences were found in the LPP between the training conditions at post-intervention. These results provide preliminary evidence that mindfulness training in novice practitioners may heighten initial emotional reactivity. Further, well-designed research is needed to examine a wider range of neural responses to better understand emotion regulation process effects of different forms of mindfulness training.
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Nahar, Taslima [Verfasser], and Markus [Akademischer Betreuer] Hecker. "Role of the lim-domain proteins LPP and ZYXIN in hypertension-induced cardiovascular remodeling / Taslima Nahar ; Betreuer: Markus Hecker." Heidelberg : Universitätsbibliothek Heidelberg, 2017. http://d-nb.info/1178010651/34.
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Laptik, Raimond. "Ant colony technologies for image processing." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20100303_133726-51617.
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In this work ant colony technologies for image processing are analyzed. Modifications of Max-Min ant system for automatic image pre-processing are proposed. Image segmentation by multiple ant colonies technique based on pheromone competition is proposed. Modified ant system is implemented in FPGA and MicroBlaze core units influence on performance is analyzed.<br>Darbe nagrinėjamos skruzdžių kolonijų technologijos vaizdams apdoroti. Pasiūlomos max-min skruzdžių sistemos modifikacijos tinkamos automatizuoti pirminį vaizdų apdorojimą. Pristatoma vaizdų segmentavimo metodika grįsta skruzdžių kolonijų varžymusi feromono pagalba. Nagrinėjama, įgyvendintos LPLM įrenginyje, modifikuotos skruzdžių sistemos sparta ir MicroBlaze modulių įtaka spartai.
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Laptik, Raimond. "Skruzdžių kolonijų technologijos vaizdams apdoroti." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20100303_133836-81809.
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Darbe nagrinėjamos skruzdžių kolonijų technologijos vaizdams apdoroti. Pasiūlomos max-min skruzdžių sistemos modifikacijos tinkamos automatizuoti pirminį vaizdų apdorojimą. Pristatoma vaizdų segmentavimo metodika grįsta skruzdžių kolonijų varžymusi feromono pagalba. Nagrinėjama, įgyvendintos LPLM įrenginyje, modifikuotos skruzdžių sistemos sparta ir MicroBlaze modulių įtaka spartai.<br>In this work ant colony technologies for image processing are analyzed. Modifications of Max-Min ant system for automatic image pre-processing are proposed. Image segmentation by multiple ant colonies technique based on pheromone competition is proposed. Modified ant system is implemented in FPGA and MicroBlaze core units influence on performance is analyzed.
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Renaud, Antoine. "Étude de la stabilisation des flammes et des comportements transitoires dans un brûleur étagé à combustible liquide à l'aide de diagnostics rapides." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLC003/document.
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La combustion prévaporisée prémélangée pauvre est une piste de choix pour réduire les émissions polluantes des moteurs d'avions mais peut conduire à l'apparition d'instabilités thermo-acoustiques. Afin d'améliorer la stabilité de telles flammes, l'étagement du combustible consiste à contrôler la distribution spatiale du carburant. Une telle procédure s'accompagne cependant d'une complexité accrue du système pouvant déboucher sur des phénomènes inattendus.Un brûleur à l'échelle de laboratoire alimenté par du dodécane liquide est utilisé dans cette thèse. Le combustible est injecté dans deux étages séparés, permettant ainsi de contrôler sa distribution. Cette particularité permet l'observation de différentes formes de flammes et notamment de points bistables pour lesquels deux flammes différentes peuvent exister malgré des conditions opératoires identiques.L'utilisation de diagnostics optiques à haute cadence (diffusion de Mie des gouttes de combustible et émission spontanée de la flamme) est couplée à des méthodes de post-traitement avancées comme la Décomposition en Modes Dynamiques. Ainsi, des mécanismes pilotant la stabilisation des flammes ainsi que leurs changements de forme sont proposés. Ils mettent notamment en lumière les interactions entre l'écoulement gazeux, les gouttes de combustible et la flamme<br>A promising way to reduce jet engines pollutant emissions is the use of lean premixed prevaporized combustion but it tends to trigger thermo-acoustic instabilities. To improve the stability of these flames, a procedure called staging consists in splitting the fuel injection to control its spatial distribution. This however leads to an increased complexity and unexpected phenomena can occur.In the present work, a model gas turbine combustor fed with liquid dodecane is used. It is equipped with two fuel injection stages to control the fuel distribution in the burner. Different flame stabilizations can be observed and a bistable case where two flame shapes can exist for the same operating conditions is highlighted.High-speed optical diagnostics (fuel droplets Mie scatering and chemiluminescence measurements) are coupled with advanced post-processing methods like Dynamic Mode Decomposition. The results enable to propose mechanisms leading to flame stabilization and flame shape transitions. They show a strong interplay between the gaseous flow, the fuel droplets and the flame itself
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Resende, Leonardo ângelo Stacciarini de. "FORMAÇÃO DE PROFESSORES DE EDUCAÇÃO FÍSICA: a experiência emergencial da Licenciatura Plena Parcelada da Universidade Estadual de Goiás LPP/UEG." Pontifícia Universidade Católica de Goiás, 2010. http://localhost:8080/tede/handle/tede/1031.
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Previous issue date: 2010-09-29<br>This research investigates the formation of physical education teachers in Brazil from
LDBEN 1996 in the face of various public policies on teacher education induced by
the MEC with a view to enhance the quality of education. We chose to study the
experience of the University State of Goias - UEG full degree parceled called on an
emergency basis, for teachers as "lay". The theory was based on Brazilian authors in
the field of education who have discussed the issue of teacher education and the
contributions of thinkers critical of physical education. The main variable was
constructed from information derived from three research procedures: a) - analysis of
official regulatory documents depicting the theme, b) - questionnaire to current
coordinators of the courses and c) - non-participant observation. We chose a
qualitative methodology with the hypothesis that guidance from the first agreement
signed with the state Department of Education of Goias seven subsequent
agreements were signed with different partners, the project suffered a flexible, driven
by demand, especially young people seeking graduation from a higher level. We
sought to determine whether the project's academic course recognized the
knowledge and practices that the students / practicing teachers brought as cultural
capital. The content analysis (Bardin and Franco) has been developed from four
categories constructed retrospectively: 1) The Poles, Coordinators and their overall
balance of certificates, 2) The University: juvenilization, challenges and future career;
3) The Role of Emergency concerned: teacher in exercise or a layman?, 4)
Curriculum Project: limits and challenges. Several analytical approaches were
available both in the preparation of proposals for a more critical as well as the nature
of purposeful through the strengths / weaknesses and suggestions for improvements.<br>Esta pesquisa investiga a formação de professores de educação física no Brasil a
partir da LDBen de 1996, em face das várias políticas públicas de formação docente
induzidas pelo MEC com vistas a ampliar a qualidade de ensino. Optou-se por
estudar a experiência da Universidade Estadual de Goiás UEG denominada de
Licenciatura Plena Parcelada em caráter emergencial, destinada aos professores
considerados leigos . A base teórica fundamentou-se em autores brasileiros do
campo da educação que têm discutido a temática da formação de professores e as
contribuições de pensadores críticos da educação física. A base empírica foi
construída a partir de informações advindas de três procedimentos de pesquisa: a)
análise de documentos normativos oficiais alusivos a temática; b) - questionário
dirigido aos atuais coordenadores dos cursos e c) - observação não participante.
Optou-se por uma metodologia qualitativa tendo como hipótese orientadora que a
partir do primeiro convênio assinado com a Secretaria Estadual de Educação de
Goiás os sete convênios subsequentes foram celebrados com parceiros
diferenciados; o projeto sofreu uma flexibilização, movida por demandas,
especialmente jovens que buscavam uma diplomação de nível superior. Procurou-se
verificar se o projeto acadêmico do curso reconheceu os saberes e práticas que os
universitários / professores em exercício traziam como capital cultural. A análise de
conteúdo (Bardin e Franco) se desenvolveu a partir de quatro categorias construídas
a posteriori: 1) Os Pólos, seus Coordenadores e o balanço geral das certificações; 2)
Os Universitários: juvenilização, desafios e futuro profissional; 3) O Papel
Emergencial em questão: professor em exercício ou leigo?; 4) O Projeto Curricular:
limites e desafios. Várias aproximações analíticas foram passíveis de elaboração
tanto em âmbito das proposições de caráter mais crítico como também como as de
natureza propositiva por intermédio dos pontos fortes / fracos e sugestões de
aprimoramentos.
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Lakkadi, Navneeth Sagar Reddy. "Flow Measurements in Turbulent Flow Fields with Magnetic Resonance Phase Velovity Mapping." Cleveland State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=csu1251412647.
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ELSHAMY, OMAR M. "EXPERIMENTAL INVESTIGATIONS OF STEADY AND DYNAMIC BEHAVIOR OF TRANSVERSE LIQUID JETS." University of Cincinnati / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1179052529.
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Christenson, Edward. "Neural Responses to Food Pictures and Their Association with Dietary Intake." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/5629.
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BACKGROUND: Food-related visual cues may affect eating behavior and energy intake. The purpose of this study was to determine the neural response to pictures of food and whether or not the neural responses were associated with energy intake. METHODS: Using a cross-sectional design, 60 adults participated in this study. Each participant reported to the laboratory in a fasted state, were fitted with a 128-electrode electroencephalogram (EEG) net, and were shown pictures grouped into three categories: high-calorie foods, low-calorie foods, and distractor pictures. These pictures were shown in random order. Furthermore, participants were shown these pictures in one passive condition and two active conditions (also in random order). The passive condition required participants to view pictures in a relaxed state while neural responses were recorded. The active conditions required participants to be actively engaged with the picture by pressing or withholding a specified button on a keyboard (go/no go task). The active conditions included only high- and low-calorie foods. Event Related Potentials (ERP) of interest were the N2, P300, and late positive potential (LPP). The National Cancer Institute's Automated Self-administered 24-hour Dietary Recall (ASA24) was used to assess energy and macronutrient intake. RESULTS: The N2 amplitude, when amplitude for high-calorie pictures is subtracted from the amplitude of low-calorie pictures, was significantly different for each active condition (F = 41.23; p < 0.0001). However, neural responses to picture-type for the N2, P300 and LPP were not different (p > 0.05). The difference in N2 amplitude, for the high-calorie no go condition that results from the amplitude for low and high-calorie pictures being subtracted from each other, was significantly associated with carbohydrate intake (r = -0.263) and significantly predicted carbohydrate intake (regression coefficient = -56.821; p = 0.043) but not energy, fat, or protein intake (p > 0.05). Neither the P300 nor the LPP was correlated with or predicted energy and macronutrient intake (p > 0.05). CONCLUSION: The N2 differentiates depending on the no go stimulus. The difference in N2 amplitude, for the high-calorie no go condition, may be an index of carbohydrate intake. The P300 and LPP do not appear to differentiate between pictures of high- and low-calorie foods, nor do they correlate with energy or macronutrient intake.
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Antoš, Zdeněk. "Příprava a charakterizace nástřiků hydroxyapatitu deponovaných technologii hybridního vodou-stabilizovaného plazmového hořáku z vodných roztoků." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-377876.
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Hydroxyapatite coatings have been used as a barrier between a metal core of replacement and living tissue for long time in medicine. Plasma spray is a typical technology for preparation these coatings. This thesis concerns a new plasma spray technology with hybrid system of arc stabilization (WSP-H). Simultaneously it uses an innovative method of feeding the initial material in a form of water suspension (SPPS). The aim of this thesis was to produce water solutions of hydroxyapatite and make coatings with WSP-H. These coatings were characterized in terms of their morfology, chemical and phase composition. Their biocompatibility was tested by a cultivation and an analysis of RAW 264.7 and MG-63 cells. The coatings made by SPPS have a very rough surface which is suitable for biological application. The biocompatibility testing discovered that the coatings will by tolerated in a human body very well. This method of production of hydroxyapatite coatings could be a good replacement of older methods after a better optimalisation of the processing parameters and after reaching purity of coating.
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Olowe, Omorinsola. "Temporal Dynamics of Emotion Regulation Strategies: An ERP Study." Thesis, Högskolan i Skövde, Institutionen för biovetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-15676.
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Distraction and cognitive reappraisal are two widely used types of emotional regulation strategies that are thought to be reliable when down-regulating our emotions to negative or unpleasant stimuli. Gross‘s process model of emotion generation (Gross, 1998) holds that they differ in the time they intervene in the emotiongenerative process and also how they impact emotional responses when they are used to regulate negative emotions. Distraction which involves attentional deployment is expected to operate earlier than reappraisal that entails meaning evaluation and reevaluation. Cognitive reappraisal encompasses various strategies that are used to regulate our emotions through reinterpretation. Self-focused and situation-focused reappraisal are two of them. The former is considered more efficient and thus would lead to a greater attenuation of the LPPthan the latter. To test this prediction, electrocortical responses to angry faces when using these strategies were measured using the late positive potential (LPP). Twenty four healthy participants were recruited for the study and were cued to down-regulate their emotions using these strategies while angry and neutral facial stimuli were seen on a computer screen. Contrary to prediction, distraction did not modulate the LPP earlier than reappraisal. However, supporting our hypothesis self-focused strategies largely modulated the LPP than situation-focused strategy. The pattern of result suggests that reappraisal might have an influence on the early neural processes of emotion generation and that the subcategories of cognitive reappraisal have a differential effect on emotional regulation.
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Nagler-Nitzschner, Ursa. "Development of a working memory test for the German Bundeswehr’s online assessment." Doctoral thesis, Humboldt-Universität zu Berlin, 2021. http://dx.doi.org/10.18452/22529.
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Wie die meisten westlichen Streitkräfte, bewegt sich die Bundeswehr im Spannungsfeld zwischen hohem Personalbedarf und Fachkräftemangel. Durch ein Onlineassessment kann der Bewerbungsprozess dahingehend optimiert werden, dass fähiges Personal schneller gebunden wird. Onlineassessment hat diverse Vorteile, gleichzeitig sind damit jedoch Herausforderungen verbunden. Die wahrscheinlich größte ist es, Betrug zu minimieren, da Onlineassessment in einer weitestgehend unkontrollierten Umgebung stattfindet. Zur Entgegnung dieser Problematik dienen verschiedene Ansätze, wie beispielsweise große Itempools, wodurch einer Verbreitung der Lösung im Internet entgegengewirkt werden kann. Dieser Ansatz ist jedoch mit hohen Kosten verbunden. Automatische Itemgenerierung hingegen ermöglicht es, kostengünstig und zeiteffizient psychometrisch hochwertige Items zu erstellen. Aus diesem Grund wurden in der vorliegenden Arbeit zwei Arbeitsgedächtnistests mit automatischer Itemgenerierung für das Onlineassessment der Bundeswehr entwickelt und evaluiert, mit dem Ziel einer hohen prädiktiven Validität auf die Diagnostik vor Ort.
In der ersten Studie (N = 330) wurde gezeigt, dass automatische Itemgenerierung für die entwickelten Arbeitsgedächtnistests eingesetzt werden kann. Hierbei wurden zudem zwei verschiedene zeitliche Varianten untersucht, wobei sich diejenige mit der längeren Stimulusrepräsentationszeit als vorteilhafter erwies.
In der zweiten Studie (N = 621) wurden Nachweise für Reliabilität und Validität erbracht. Die Tests zeigten eine gute konvergente und diskriminante Validität. Zudem konnte einer der beiden Tests eine sehr gute prädiktive Validität aufweisen. Unter Gesamtberücksichtigung der Testgütekriterien wurde dieser Test schließlich für das Onlineassessment der Bundeswehr vorgeschlagen. Somit steht der Bundeswehr nun ein wissenschaftlich fundierter Arbeitsgedächtnistest für das Onlineassessment zur Verfügung.<br>Like most Western armed forces, the Bundeswehr faces both high personnel requirements and a shortage of skilled personnel. Online assessment can optimize the application process to ensure that capable personnel are retained more quickly. Online assessment has various advantages, but also challenges associated with it. Probably the biggest of these challenges is minimizing cheating, as online assessment takes place in a largely unsupervised environment. Various approaches are used to counter this problem, such as large item pools, which can be used to counter the dissemination of solutions on the Internet. However, this approach is associated with high costs. Automatic item generation, on the other hand, makes it possible to create psychometrically high-quality items in a cost-effective and time-efficient manner. For this reason, two working memory tests with automatic item generation for the German Armed Forces’ online assessment were developed and evaluated in the present study, with the aim of matching the high predictive validity of on-site diagnostics.
The first study (N = 330) demonstrated that automatic item generation can be used for the developed working memory tests. Two different temporal variants were also investigated, with the longer stimulus presentation time proving to be more beneficial.
The second study (N = 621) provided reliability and validity evidence. The tests showed good convergent and discriminant validity. In addition, one of the two tests demonstrated very good predictive validity. Taking into account the overall test quality criteria, this test was ultimately proposed for use in the German Armed Forces’ online assessment. Thus, the Bundeswehr now has a scientifically-grounded working memory test available for its online assessment.
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Fernández, Ulibarri Inés. "Papel del diacilglicerol en el tráfico de membranas en la zona entre el retículo endoplasmático y el complejo de Golgi, El." Doctoral thesis, Universitat de Barcelona, 2008. http://hdl.handle.net/10803/907.
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DE LA TESIS:<br/><br/>El DAG es esencial para formar los intermediarios de transporte que se dirigen a la membrana plasmática. Sin embargo, no existen evidencias de su posible participación en las etapas tempranas de la vía secretora. Por tanto, nos centramos en averiguar la implicación del DAG en el transporte de proteínas en la zona del ER/Golgi. Para ello, utilizamos una variedad de fármacos conocidos que inhiben las enzimas responsables de la producción del DAG. Nuestros datos indican que el DAG está implicado en la formación de vesículas COPI en el compartimento temprano del Golgi, concretamente en el proceso de fisión, a través del reclutamiento de ArfGAP1. <br/>Posteriormente, estudiamos si la LPP3 (PAP2b) era una de las enzimas responsables de controlar los niveles necesarios de DAG en el cis-Golgi para la formación de las vesículas COPI y la regulación del transporte retrógrado. Para determinar el papel de la LPP3 en la regulación de los niveles de DAG y en la organización y transporte asociado a este compartimento seguimos dos estrategias experimentales: ARN de interferencia para disminuir la expresión de la LPP3 y vectores de expresión para aumentarla. Los resultados sugieren que la LPP3 regula la producción de DAG en las membranas de Golgi y, además, que participa en la organización estructural y funcional del complejo de Golgi, al menos en el transporte retrógrado.<br/>Paralelamente, estudiamos si la PKC epsilon era un efector del DAG en el Golgi implicado en la formación de las vesículas COPI. El DAG actúa como un segundo mensajero modulando la localización y la actividad enzimática de ciertas proteínas citoplasmáticas en el Golgi. Estas proteínas tienen un dominio de unión a DAG (dominio C1) que le permite su interacción directa con este lípido y así regular diferentes procesos asociados al Golgi. La PKD se recluta al TGN a través de su unión con el DAG y resulta esencial para la formación de intermediarios de transporte en el TGN. Teniendo en cuenta que la PKC epsilon interacciona con el coatómero, pensamos que podría ser un buen candidato para regular el transporte ER/Golgi de forma similar a la que PKD realiza en el TGN. Nuestros resultados muestran que la PKC epsilon se recluta en el Golgi de manera dependiente de DAG, pero no parece participar en el transporte retrógrado en la zona endoplasmático /complejo de Golgi.
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Pereira, Edna Lemes Martins. "FORMAÇÃO DE PROFESSORES DE HISTÓRIA NA UNIVERSIDADE PARA OS TRABALHADORES DA EDUCAÇÃO: Projeto de LPP da UEG no Norte Goiano (1999-2001)." Pontifícia Universidade Católica de Goiás, 2014. http://localhost:8080/tede/handle/tede/715.
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Previous issue date: 2014-03-21<br>This Thesis is part of the Research line State, policies and Educational institutions. Its
general objectives consists in developing studies on the influence of the neoliberal
project in the processes of Educational reform which have emerged in the context of
globalization, mainly in the formation of history teachers of the Basic Education
Projeto Licenciatura Plena Parcelada (PLPP) / State University of Goiás (UEG)
branch of Porangatu (UnU) single class (1999-2001). The social relevance is in the
importance of PLPP for the teachers of North Goiás that acted without training in
higher education until the year of 1999, period of creation of the UEG and the
implantation of the Program University for the workers of the Education (UTE). The
proposed specific objectives were achieved and a) to map the expansion of higher
education in Brazil and Goiás, as well as the process of Interiorization of state public
university, b) to analyze the potentialities and the limits of the formation in service of
the history teachers in their professionalization, c) to understand the importance of
LPP program for History teachers of the North of Goiás. The problem of the research
refers to the identification of the impacts of the PLPP/UEG in the formation in service
of the teachers of the History course of the North of Goiás, taught at the UnU of
Porangatu/UEG. The characters of the research are 12 teachers / graduates of the
course. It was adopted as a method the dialectical historical materialism. The
research is qualitative, with analysis of questionnaires and content analysis. The
categories of analysis that appeared with the systematization of the empirical data
are: Educational Policies, Teacher Training and professionalization of the History
teachers. As search results stand positive and negative aspects: Among the negative
points are related to lack of physical and pedagogical structure of the University
difficulties, the emergency nature, in-service training, suspension of labor law of the
servers in the realization of the course in late weekend and holiday. Positive as it
appears that the UEG internalized the public higher education in Goiás qualifying in
service by PLPP approximately 65% of teachers who worked without courses at the
college level. It assured the teachers of History of the North Region of Goiás
certifications at a higher level, advantages in positions and salaries, participations in
public exams and the positions of confidence, changes in their self-steam and in their
posture and professional practice, essential factors for building their professionalism<br>Esta Tese insere-se na Linha de Pesquisa Estado, Políticas e Instituições
Educacionais. Seu objetivo geral consiste em desenvolver estudos sobre a influência
do projeto neoliberal nos processos de reforma educacional que surgiram no
contexto de globalização, em especial, na formação de professores de História da
Educação Básica no Projeto de Licenciatura Plena Parcelada (PLPP) /UEG da UnU de
Porangatu, turma única (1999-2001). A relevância social do tema está na importância
do PLPP para os professores da Região do Norte Goiano que atuavam sem formação
em nível superior até o ano de 1999, período da criação da UEG e da implantação do
Programa Universidade para os Trabalhadores da Educação (UTE). Os objetivos
específicos propostos e alcançados foram a) mapear a expansão do ensino superior
no Brasil e em Goiás, bem como o processo de interiorização da universidade
pública estadual; b) analisar as potencialidades e os limites da formação em serviço
dos professores de História em sua profissionalização docente e c) compreender a
importância do Programa LPP para os professores de História da Região Norte
Goiana. O problema de pesquisa refere-se à identificação dos impactos do
PLPP/UEG na formação em serviço dos professores do curso de História do Norte
Goiano, ministrado na UnU de Porangatu/UEG. Os sujeitos da pesquisa são 12
professores/egressos do curso. Adotou-se como método o materialismo histórico
dialético. A pesquisa é qualitativa, com análise de questionários e análise de
conteúdo. As categorias de análise que emergiram da sistematização dos dados
empíricos são: Politicas Educacionais, Formação de Professores e
Profissionalização docente do professor de História. Como resultados da pesquisa
sobressaem aspectos negativos e positivos: Dentre os negativos ressaltam-se as
dificuldades relacionadas à falta de estrutura física e pedagógica da Universidade, o
caráter emergencial, a formação em serviço, suspenção do direito trabalhista dos
servidores na realização do curso em finais de semana e férias. Como positivos
verifica-se que a UEG, interiorizou o ensino superior público em Goiás qualificando
em serviço pelo PLPP aproximadamente 65% de docentes que atuavam na
educação básica sem cursos em nível superior. Garantiu aos professores de História
da Região do Norte Goiano certificações em nível superior, vantagens de cargos e
salários, participação em concursos públicos e em cargos de confiança, mudanças
em sua autoestima e em sua postura e exercício profissional, fatores essenciais para
a construção de seu profissionalismo.
46
Lima, Obéde Pereira de. "Localização geodésica da linha da preamar média de 1831-LPM/1831, com vistas à demarcação dos terrenos de marinha e seus acrescidos." Florianópolis, SC, 2002. http://repositorio.ufsc.br/xmlui/handle/123456789/83028.
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Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Civil.<br>Made available in DSpace on 2012-10-19T20:22:36Z (GMT). No. of bitstreams: 1
184921.pdf: 4355519 bytes, checksum: 5635c9f43001a5837579340127ec165f (MD5)<br>Esta pesquisa aborda o problema da demarcação dos terrenos de marinha e seus acrescidos, desenvolvendo uma metodologia e estabelecimento de um modelo científico que possibilita a localização geodésica da "Linha da Preamar Média de 1831 - LPM/1831" a partir da análise harmônica dos dados amostrados de marés de longo período, de modo que atenda a exatidão e a precisão das medidas compatíveis com as necessidades do levantamento cadastral destas parcelas imobiliárias. Os terrenos de marinha e seus acrescidos têm suas origens na época do Brasil Colonial, com a finalidade de "assegurar às populações e à defesa nacional o livre acesso ao mar e às áreas litorâneas". Dentro deste princípio, estas parcelas imobiliárias são bens dominicais da União, não podendo a sua propriedade pertencer a terceiros, embora o seu domínio útil possa ser concedido sob a forma de enfiteuse. Os critérios adotados pelo órgão gestor na demarcação destes bens dominicais ao longo de toda a sua história, baseados em conceitos que levam a uma LPM/1831 presumida, pela falta da adoção de procedimentos técnicos científicos que possibilitam suas demarcações com exatidão e precisão, ferem frontalmente a definição contida na legislação em vigor há quase dois séculos, ocasionando invasão nas propriedades alodiais com as quais se limitam. A metodologia desenvolvida nesta pesquisa participa de atividades em quatro áreas distintas: a) na Hidrologia: com a instalação e operação de uma estação maregráfica, para a obtenção de dados amostrados da maré durante um período mínimo de um ano; b) na Geodésia: com a determinação das coordenadas geodésicas de pelo menos dois pontos extremos, utilizando o GPS (Global Positioning System) em posicionamento com precisão de 1 ppm, para amarração e controle do levantamento planialtimétrico da linha de costa e dos perfis de praia, c) na Informática: com o processamento dos dados amostrados de marés, efetuando-se a análise harmônica e a retrovisão da preamar média para o período desejado (ano de 1831), utilizando um software para microcomputadores PC (Personal Computer); prossegue na determinação da "cota básica", o que é feito pela comparação entre o datum altimétrico oficial e altura da preamar média/1831 processada para o local; e d) na Topografia: quando se executa, por fim, a localização da LPM/1831 e da "Linha Limite dos Terrenos de Marinha - LLM". Esta metodologia foi testada pela aplicação em uma área de estudo na Praia da Enseada, em São Francisco do Sul, no Estado de Santa Catarina, onde foi constatada uma diferença da ordem de cem (100) metros à mais para o lado de terra na localização da LPM/1831 pelos critérios estabelecidos pela SPU, atingindo toda a avenida beira-mar e mais a metade de todas as quadras na direção longitudinal, de imóveis fronteiros com esta avenida. São apresentados os resultados obtidos, seguidos de uma análise e, finalizando, externam-se as conclusões e as recomendações.
47
Urthaler, Stephanie. "Tränas förmågorna i ämnet fysik? : En innehållsanalys av lärarnas planeringar, LPP:er samt hur lärarna övar förmågorna med eleverna i ämnet fysik." Thesis, Södertörns högskola, Lärarutbildningen, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-33978.
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Abstract - Which abilities are the students training in the subject of physics? The purpose of this study was to examine teachers' plans, LPPs (Local Educational Planning) to see which abilities are trained and how. I have created a content analysis of the teachers' plans, LPPs and how the teachers practice the abilities of the students in the subject of physics. I analysed two LPPs in the grade 5 and two LPPs in the grade 6. The LPPs are from two different schools and two teachers' one in each grade. My first purpose was to examine which abilities, prescribed in Lgr 11 students are training and if the abilities create a common thread between grade 5 and grade 6 in the subject of physics. My second purpose was to examine what kind of teaching the students are training the abilities which can be found in Lgr 11. The study addresses three different kinds of teaching which are more open, more guided or in a combined way of teaching. My study answered the following questions: Which abilities in Lgr 11 are the students training in the subject of physics in grade 5 and 6? What kind of teaching are the students training the abilities in Lgr 11? The study was based on a content analysis of the LPPs and the theory I used to analyse was The Big 5. I also used interview by email with the teachers who gave me the LPPs. Based on the results and the analysis of the study, I came to the conclusion that all four LPPs in the two different schools were practicing the abilities prescribed in Lgr 11 and that they used The Big 5 to clarify the abilities that the topic addresses. All four LPPs have a common thread between grade 5 and 6 where some abilities are recorded again others are excluded and supplemented with new ones. Based on the results and the analysis, I came to the conclusion that both teachers teach the skills prescribed in Lgr 11 in the subject of physics in an open way of teaching, i.e. when students are active participants in the teaching. Combined teaching was used several times when the students e.g. had to try out for a given topic. Guided teaching was used only once in all four LPPs e.g. when the teachers prepare a list of concepts.
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Cheneau, Benoit. "Étude numérique de la dynamique de combustion dans un brûleur diphasique turbulent à deux étages." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLC021.
Full textAbstract:
Les normes environnementales de plus en plus contraignantes imposées au transport aérien poussent les industriels à faire évoluer les chambres de combustion actuelles. Pour réduire les émissions polluantes, la combustion pauvre, prémélangée et prévaporisée est une alternative intéressante. Cette technologie peut cependant conduire à une flamme moins stable et peut générer des instabilités de combustion néfastes pour le moteur. Afin d’améliorer le contrôle sur de tels systèmes de combustion, les brûleurs à plusieurs étages offrent une flexibilité supplémentaire par l’intermédiaire de la répartition du carburant entres les différents systèmes d’injection, et permet donc d’influencer la position de la flamme ou le régime de combustion. Le banc expérimental BIMER a été spécialement développé au laboratoire EM2C pour étudier cette solution. Il a été conçu pour être représentatif d’un moteur aéronautique réel et d’en reproduire les caractéristiques essentielles : une configuration à deux étages, de l’air préchauffé et du carburant liquide sont utilisés. Il fonctionne néanmoins à pression atmosphérique et développe une puissance thermique élevée à l’échelle du laboratoire. Le brûleur est composé de deux vrilles radiales : l’étage pilote dans lequel le carburant liquide est injecté sous la forme d’un cône creux, et l’étage multipoint où le mélange du carburant et de l’air est favorisé par une injection multipoint, grâce à dix jets de carburant injectés transversalement à l’écoulement d’air. Les études expérimentales ont montré le rôle clé de la distribution carburant, et sans modifier la puissance développée, l’existence d’un cycle d’hystérésis : plusieurs archétypes de flammes peuvent se stabiliser, suivant l’écoulement, le spray ou l’historique de la flamme. L’objectif de cette thèse est de compléter les données expérimentales et la compréhension des processus de stabilisation de flammes pauvres, prémélangées et prévaporisées dans les brûleurs étagés au moyen de simulations numériques aux grandes échelles diphasique et réactives. Cette approche numérique est appliquée au banc BIMER avec le code AVBP. Des simulations successives, allant de l’injection purement pilote à l’injection purement multipoint, et réciproquement, ont permis de retrouver le cycle d’hystérésis observé expérimentalement. Un point de fonctionnement tri-stable original a été rencontré numériquement pour des cas d’injection de carburant dans l’étage pilote seul, trois formes de flammes distinctes étant observées pour cette unique condition d’injection. La comparaison aux résultats expérimentaux pour les points de fonctionnement pour lesquels des données de validation sont disponibles montrent un bon accord entre le calcul et l’expérience pour différents étagements. Une analyse originale dans l’espace de composition met en évidence les régimes de combustion observés dans ces trois cas, confirmant les différents scénarios de stabilisation. Les deux transitions de formes de flammes observées expérimentalement sont finalement présentées et analysées<br>The increasingly stringent environmental standards imposed on air transport are pushing manufacturers to upgrade the existing combustion chambers. To reduce pollutant emissions, lean, premixed and pre-evaporated combustion is an interesting alternative. This technology, however, can lead to a less stable flame and can generate combustion instabilities harmful to the engine. In order to improve control over such combustion systems, multi-stage burners provide additional flexibility through the distribution of fuel between the different injection systems, and thus influence the position of the flame or the burning regime. The BIMER experimental bench has been specially developed in the EM2C laboratory to study this solution. It has been designed to be representative of a real aviation engine and to reproduce its essential characteristics : a two-stage configuration, preheated air and liquid fuel are used. It nevertheless operates at atmospheric pressure and develops a high thermal power at the laboratory scale. The burner consists of two radial swirlers : the pilot stage in which the liquid fuel is injected in the form of a hollow cone, and the multipoint stage where the mixture of fuel and air is favored by a multipoint injection, thanks to ten jets of fuel injected transversely to the air flow. Experimental studies have shown the key role of the fuel distribution, and without modifying the power developed, the existence of a hysteresis cycle : several archetypes of flames can be stabilized, depending on the flow, spray or history of the flame. The objective of this thesis is to complete the experimental data and understanding of poor, premixed and pre-vaporized flame stabilization processes in staged burner using two-phase reactive large-eddy simulations. This numerical approach is applied to the BIMER bench with the AVBP code. Successive simulations, ranging from pure pilot injection to purely multipoint injection, and vice versa, have made it possible to trace the hysteresis cycle observed experimentally. An original tri-stable operating point was encountered numerically for fuel injection cases in the pilot stage alone, with three distinct flame shapes being observed for this single injection condition. The comparison to the experimental results for the operating points for which validation data are available shows a good agreement between the calculation and the experiment for different stages. An original analysis in the composition space shows the combustion regimes observed in these three cases, confirming the different stabilization scenarios. The two transitions of flame shapes observed experimentally are finally presented and analyzed
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Silva, Edilena Rodrigues da. "Ação do nematóide entomopatogênico Heterorhabditis indica LPP1 (Poinar, kranukar & David, 1992) (Rhabditida: Heterorhabditidae) sobre a biologia reprodutiva de fêmeas ingurgitadas de Boophilus microplus (Canestrini, 1887) (Acari: Ixodidae)." Universidade Federal de Juiz de Fora (UFJF), 2007. https://repositorio.ufjf.br/jspui/handle/ufjf/2994.
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Previous issue date: 2007-02-27<br>CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Boophilus microplus (Canestrini,1887) (Acari: Ixodidae) o carrapato dos bovinos é um
ectoparasito associados à diversas doenças que podem levar o animal a diminuição de sua
produção e até mesmo à morte. O principal meio de controle deste carrapato é realizado
por meio de carrapaticidas, os quais, estão possibilitando a disseminação da resistência
das populações de carrapatos. Os nematóides entomopatogênicos, têm sido apontados
como excelentes candidatos ao controle biológicos de insetos, e trabalhos recentes
mostram suas eficácias contra carrapatos.O objetivo deste trabalho foi avaliar os efeitos do
isolado LPP1 (proveniente da cidade de Monte Negro, Rondônia, Brasil) da espécie
Heterorhabditis indica (Poinar, Karanukar & David, 1992), sobre a biologia reprodutiva
de fêmeas ingurgitadas de B. microplus. Foram testadas diferentes concentrações com 75,
150, 300, 600, 1200, 2400 e 4800 juvenis dispersos água destilada, por fêmea. Cada grupo
de 30 fêmeas foi separado em seis placas de Petri com areia, cada uma com cinco fêmeas,
totalizando 8 grupos. Os tratamentos e o controle foram acondicionados em câmara
climatizada a 27 ± 1° C e UR>80%, durante 48 horas. Depois o tempo de exposição, as
fêmeas que estavam vivas foram individualmente acondicionadas em potes plásticos, e
observadas diariamente até a última morte. Foi observado inicio e final da postura para
fêmeas que ovipositaram, data da morte e aspecto pós-morte, para todas as fêmeas. Foram
avaliados: peso inicial da fêmea, período de pré-postura, período postura, período de
sobrevivência, peso da postura, alteração do peso da fêmea, peso final da fêmea, período
de incubação dos ovos (PIO), percentual de eclosão (%EC), índice de produção de ovos
(IPO), índice nutricional (IN), percentual de controle (%C). Os pesos iniciais, períodos de
pré-postura, do grupo controle em relação a todos os tratamentos não mostraram
diferenças. Os pesos finais mostraram diferença entre o grupo controle e os grupos
tratados, o que não ocorreu entre os tratamentos. Na alteração do peso da fêmea e índice
nutricional houve diferença entre o grupo controle e os grupos tratados, aumentando à
medida que a concentração de juvenis crescia. Tanto no período de postura quanto no
período de sobrevivência houve evidente redução. A massa de ovos e a porcentagem de
eclosão larval foram reduzidas. O índice de produção de ovos do grupo controle mostrouse
semelhante a menor concentração e diferente entre os demais tratamentos. Todas as
concentrações apresentaram eficácia acima de 95% de controle do carrapato.<br>The cattle tick Boophilus microplus (Canestrini, 1887) (Acari: Ixodidae) is an ectoparasite
associated with various diseases that can reduce animals’ production on even cause their
death. The main control method is application of carrapaticides, which can lead to resistant
tick populations. Entomopathogenic nematodes have been indicated as excellent candidates
for biological control of insect, and recent studies have shown their efficacy against ticks. The
objective of this study was to assess the effects of the LPP1 isolate (from Monte Negro,
Rondônia, Brazil) of the species Heterorhabditis indica (Poinar, Karanukar & David, 1992)
on the reproductive biology of ingurgitated B. microplus females. Different nematode
concentrations were tested, with 75, 150, 300, 600, 1200, 2400 and 4800 infective juveniles
dispersed in distilled water per female. Each group of 30 females was separated into six Petri
dishes containing sand, each with five females, for a total of eight groups including the
control. The Petri dishes were then kept in a climate controlled chamber at 27 ± 1° C and
UR>80%, for 48 hours. After the exposure time, the females that were still alive were placed
individually in plastic cups and observed daily until the last one died. The start and end of
laying was observed for females that laid eggs, and the date of death and post mortem aspect
were noted for all females. The other parameters recorded were initial weight, pre-laying
period, laying period, survival period, egg mass weight, change in weight and final weight of
the female ticks, egg incubation period (EPI), larval hatching rate (% HR), egg production
index (EIP), nutritional index (NI), and control percentage (%C). There were no differences
observed in the initial weight and pre-laying period between the control group and all the
treatments. There was a difference in the final weight of the control group and treated groups,
but none among the treatments. In relation to female weight and nutritional index, there was a
difference between the control group and treated groups, which increased as the concentration
of infective juveniles went up. There was an evident reduction in the treated groups both in
laying period and survival period. The egg mass and the hatching percentage were smaller in
the treated groups. The egg production index was similar in the control group and the treated
group with the lowest concentration, and different for the other concentrations. All the
treatments with nematodes showed efficacy greater than 95% in controlling the ticks.
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Dalstrand, Joakim, and der Meer Bas van. "Orsaker till och möjligheter att minska spill av gipsskivor i byggprocessen." Thesis, Linnéuniversitetet, Institutionen för byggteknik (BY), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-88161.
Full textAbstract:
The construction industry is facing challenges when it comes to increased costs, defective timetables and inadequate material handling. The purpose of the study is to highlight and propose possible improvements to the process of using plasterboards in the construction industry. The aim of the survey is to investigate how the use of plasterboards can be made more efficient through better collaboration between stakeholders in the construction industry and to identify shortcomings in the current construction process. Interviews were used to produce improvements and shortcomings. The result showed that there is a lack of communication between actors and when handling plasterboards. Other shortcomings in the industry are documentation of changes made during production and cooperation between actors.<br>Byggbranschen står inför utmaningar när det kommer till ökade kostnader, bristande tidsplaner och bristfällig materialhantering.Syftet med studien är att belysa och föreslå möjliga förbättringar av processen kring gipsanvändning i byggbranschen. Målet med undersökningen är att undersöka hur användningen av gipsskivor kan effektiviseras genom ett bättre samarbete mellan aktörer i byggbranschen samt att identifiera brister i nuvarande byggprocess. Intervjuer användes för att få fram brister och förbättringsmöjligheter.Intervjuerna visade att det finns brister i kommunikationen mellan aktörer samt vid hantering av gipsskivor. Andra brister i branschen är dokumentation av ändringar gjorda under produktionen och samarbete mellan aktörer.