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Semerari, Luca. "Analisi di sensibilità di un modello lagrangiano a particelle. Il caso del Lapmod." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.
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Il problema legato alle emissioni in atmosfera di inquinanti è sempre più frequente con la nascita e sviluppo di tecnologie nuove ed innovative, e pertanto sono state attuate diverse misure per il monitoraggio del fenomeno. Una strategia è l’utilizzo di standard di qualità dell’aria, attraverso i quali è possibile misurare direttamente la concentrazione delle sostanze, ma ciò può essere effettuato solo in un numero finito di punti relativi alle postazioni di misura delle varie reti di rilevamento presenti sul territorio nazionale. Per ottenere indicazioni in ogni punto del territorio e per ricostruire un preciso quadro della distribuzione spazio-temporale della concentrazione dei vari inquinanti di interesse sono stati utilizzati modelli matematici di simulazione di dispersione. In questa tesi, è stato considerato il caso del modello lagrangiano a particelle Lapmod per analizzare la sua sensibilità cambiando diversi parametri operativi. Si è osservato come possono variare i risultati in base al numero di particelle emesse al minuto e al Kernel necessario per ottenere le concentrazioni.
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Colin, Fabio. "Dispersione di sostanze odorigene nell'atmosfera e modellizzazione mediante software dedicato (un'applicazione del software LAPMOD)." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/9761/.
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Gli odori rappresentano uno degli elementi di disturbo che la popolazione avverte maggiormente e, anche nel caso in cui non siano associati a sostanze tossiche, sono causa di conflitti e di intolleranza, sia nei confronti delle aziende che li diffondono nel territorio, sia nella scelta del sito di localizzazione di nuovi impianti.
La valutazione del disturbo olfattivo e la sua regolamentazione (esistono linee guida, ma non una legislazione di riferimento) rappresentano aspetti caratterizzati da elevata complessità, dal momento che l’inquinamento olfattivo è strettamente associato alla percezione umana.
Nella tesi vengono valutate le emissioni odorigene e le relative immissioni, dovute ad un comparto per la gestione integrata dei rifiuti. Per caratterizzare le emissioni sono stati prelevati dei campioni di aria presso le principali sorgenti individuate e quantificate utilizzando la tecnica dell’olfattometria dinamica. Una volta caratterizzate le sorgenti, i dati di emissione ottenuti dalla campagna di misura e dall’analisi olfattometrica sono stati utilizzati come dati di input del modello LAPMOD (LAgrangian Particle MODel). LAPMOD è stato implementato con un modulo specifico per la determinazione delle concentrazioni massime orarie che utilizza un peak-to-mean variabile nel tempo, a differenza di altri modelli che usano un valore costante per la determinazione. Dall'elaborazione dei dati è emerso che, utilizzando il modulo specifico per gli odori, le concentrazioni come 98° percentile riferite al giorno tipico hanno un andamento opposto rispetto all’uso di un peak-to-mean costante.
Dal confronto della simulazione in cui le emissioni sono indipendenti dalla variazione della portata di odore in funzione della velocità del vento, con quella che invece simula tale dipendenza (nelle sorgenti che presentano paratie laterali e tettoia) è emerso che la simulazione che mitiga completamente l’effetto del vento è più coerente con la realtà.
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Galati, Eleonora. "Dispersione di sostanze odorigene nell'atmosfera mediante software dedicato e monitoraggio attraverso il sistema olfattivo elettronico (naso elettronico)." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/12640/.
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Le emissioni odorigene causano fastidio per la popolazione residente vicino ad impianti industriali. La valutazione del disturbo è complessa, poiché l’odore è associato alla percezione umana: risulta perciò complicato applicare una regolamentazione, dal momento che in Italia non esiste una legislazione specifica (esistono linee guida, ma senza valore a livello nazionale). Il presente lavoro di tesi ha ampliato lo studio del 2015, nel quale sono state valutate le emissioni odorigene e le immissioni di un comparto per la gestione integrata dei rifiuti, collocato a Nord di Ravenna, tramite il reclutamento di sentinelle per la compilazione di schede di segnalazione dell’odore. Questa tesi ha previsto un’ulteriore compilazione delle schede da parte dei cittadini e la valutazione delle emissioni caratterizzate analizzando, con la tecnica dell’olfattometria dinamica, campioni di aria prelevati dalle sorgenti. I dati di emissione ottenuti (espressi in unità odoritriche/m3) sono stati inseriti come dati di input in un modello di dispersione atmosferica, LAPMOD (LAgrangianParticleMODel), che utilizza un algoritmo per la determinazione delle concentrazioni orarie di picco di odorosità. I file restituiti dal modello sono stati elaborati, con l’ausilio di sistemi geo-informatici (Qgis), per ottenere le mappe di isoconcentrazione, come definito dalle linee guida della regione Lombardia, che rappresentano i principali riferimenti normativi. La nuova ricerca ha previsto l’addestramento di un naso elettronico, posizionato presso un recettore sensibile, utilizzato come sistema di monitoraggio in continuo; è stata individuata, così, la sorgente maggiormente impattante tra quelle analizzate, ossia la vasca decantazione fanghi. Infine, le stime ricavate dal modello sono state validate utilizzando le schede di segnalazione dell’odore. Le ore segnalate, corrispondenti all’ 1,4% del tempo complessivo d’indagine, sono risultate inferiori alla soglia prevista dalle linee guida.
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Mariotti, Gianluca. "Valutazione delle caratteristiche dei modelli di previsione degli impatti odorigeni di tipo gaussiano e lagrangiano." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16995/.
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Le emissioni in atmosfera di inquinanti, come le polveri o gli odori, rappresentano una pressione antropica diffusa e la loro gestione implica la conoscenza del fenomeno e della dispersione all’interno del Planetary Boundary Layer. Questa tesi è incentrata sull’uso di due modelli previsionali: il Dimula, modello gaussiano a plume, e il Lapmod, modello lagrangiano a particelle. Sono state valutate le singole funzionalità, che consentono di stimare la dispersione, e si è analizzata l’affidabilità e la comparabilità dei risultati, in termini di concentrazione, in un reticolo di lati 10.000 m (asse X) ∙ 10.000 m (asse Y). Le simulazioni, relative a sorgenti puntiformi ed areali, a polveri ed odori, sono state condotte a livello orario (short term), usando come input un unico set di dati meteorologici (vento da Ovest e con velocità 1,5 m⁄s, T=293 K), per condizioni atmosferiche instabili, neutre e stabili, e a livello annuale (long term), impiegando come set di dati meteorologici 8760 record relativi al 2016 per la provincia di Ravenna. Nel post-processamento dei risultati, per singole sorgenti e sorgenti totali, sono stati prodotti quattro tipi di grafici: mappe con le curve di iso-concentrazione (per modello), istogrammi con il confronto delle concentrazioni calcolate nei nodi comuni lungo l’asse Y centrale, grafici normalizzati, per una percezione punto per punto dell’andamento dei modelli, e la validazione dei risultati stessi. A livello orario si è apprezzato il comportamento, nella restituzione delle concentrazioni, sopra e sottovento dei due modelli, per classe di stabilità, valutando come l’ubicazione di un recettore sensibile possa guidare la scelta dello strumento previsionale. A livello annuale, invece, si è valutato il diverso grado di modellizzazione del PBL ed in particolare del plume rise, dovuto all’utilizzo di due differenti algoritmi, nonché il diverso approccio nel calcolo dei percentili per le medie di un’ora.
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Bernardini, Giulia. "Analisi e valutazione delle emissioni di un impianto di stoccaggio di gas naturale interrato e del loro impatto sulla qualità dell’aria." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.
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L’impatto che le emissioni di origine industriale hanno sulla qualità dell’aria è uno degli argomenti centrali di questi decenni, per questo il presente studio si propone di valutare ed analizzare con modelli matematici le emissioni di un impianto di stoccaggio di gas naturale interrato nella zona della provincia di Bologna e il loro impatto sulla qualità dell’aria.
Questa tipologia di impianto consente l’immagazzinamento di gas naturale in un giacimento sotterraneo, ricoprendo un ruolo fondamentale nella filiera del gas naturale perché permette di rispondere con flessibilità alle esigenze stagionali: si ha compressione e iniezione del gas nei pozzi durante la stagione estiva ed estrazione e trattamento durante la stagione invernale. Le emissioni principali durante la fase di stoccaggio sono metano, NOx e CO (questi ultimi due inquinanti sono presenti solo nel caso in cui sia utilizzato gas naturale anche per il funzionamento delle turbine di compressione). Gli inquinanti su cui questo studio si è focalizzato sono gli Ossidi di Azoto che l’impianto produce durante la fase compressione.
Il modello utilizzato per simulare la dispersione in aria degli inquinanti è LAPMOD (LAgrangian Particle MODel) con il quale sono state caratterizzate le possibili sorgenti di emissione nell’area analizzata: l’impianto di stoccaggio, una strada ed un’altra grande industria nella zona.
Lo studio procede con la validazione del modello e la valutazione dei contributi che ogni sorgente ha sulla qualità dell’aria, il confronto tra i risultati ottenuti dal modello con i valori misurati in una campagna di monitoraggio della qualità dell’aria realizzata dalla ditta di stoccaggio nel 2017 ed infine con l’analisi delle mappe di isoconcentrazione risultanti dal modello.
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Huber, Sabine. "Laptop-Klassen im Englischunterricht /." München : Langenscheidt ELT, 2009. http://deposit.d-nb.de/cgi-bin/dokserv?id=3234521&prov=M&dokv̲ar=1&doke̲xt=htm.
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Impey, M. D. "Bifurcation in Lapwood convection." Thesis, University of Bristol, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234799.
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Judge, R. C. B. "Lapped joints in reinforced concrete." Thesis, Durham University, 1987. http://etheses.dur.ac.uk/6779/.
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This thesis is concerned with an experimental investigation of the behaviour of lapped joints in reinforced concrete. A review of existing literature highlights the need to establish the longitudinal strain distribution along lap joints. This has been achieved experimentally, with detailed strain measurements being taken using a technique of internally gauging the reinforcing rods. In some specimens, strain concentration gauges were installed at the tip of the lap to permit the acquisition of particularly localised information. Computer programs were developed to process the substantial amounts of data generated during the course of each test. Two series of tests were undertaken, both using axially loaded specimens, and dealing with tension and compression lap joints respectively. The laps ranged in length from 125 to 750 mm, and comprised bars of either 12 or 20 mm diameter. Transverse reinforcement was provided in two of the tension specimens. Greater emphasis was placed on the first series, with fifteen tension specimens being tested. Thirteen of these tests were each completed within a single day but, additionally, two long-term tests were undertaken. In the latter, a constant load was sustained for up to 81 days. The measurements clearly showed the changing behaviour of the specimens, first as transverse cracks developed and subsequently as failure of the lap joint was approached. The comprehensive analysis of the test results includes a comparison of the ultimate behaviour of these joints with existing design proposals and regulations. The detailed information provided by the strain measurements enables the justification of design assumptions regarding lap joint behaviour, and thus lends greater confidence to existing design regulations. The results from five compression specimens were analysed and compared with the tension tests. The significant contribution to force transfer made by the bearing of the free end of the steel against the concrete was evident. The specimens were loaded to the rig capacity without failing. Additional strain measurements were taken in one tension and one compression specimen by casting embedment gauges within the concrete. These gauges were arranged to measure the circumferential strains in the specimen, and were complemented by strain gauges mounted on the surface of the concrete. The data thus obtained permitted a comparison of the bursting forces set up inside and outside the lap joints. The work showed that some aspects of lap joint behaviour require clarification. Suggestions for further work are included.
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Young, Robert W. "Video coding using lapped transforms." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309337.
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Delaporte, Yves. "Le vêtement lapon /." Paris ; Leuven : Oslo : [Paris] : Peeters ; Instituttet for sammenlignende kulturforskning ; [SELAF], 2004. http://catalogue.bnf.fr/ark:/12148/cb391383276.
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Schaumburg, Heike. "Konstruktivistischer Unterricht mit Laptops? eine Fallstudie zum Einfluss mobiler Computer auf die Methodik des Unterrichts /." [S.l. : s.n.], 2003. http://www.diss.fu-berlin.de/2003/63/index.html.
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Griesbach, Brad J. "An action evaluation of UW-Stout's laptop implementation global student expectations and Microsoft Office competencies the first year /." Online version, 2003. http://www.uwstout.edu/lib/thesis/2003/2003griesbachb.pdf.
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Klinger, Brian P. "The laptop initiative in the Graphic Communications Management program at the University of Wisconsin-Stout a comparison of initial student expectations versus actual usage for the fall 2002 semester /." Online version, 2004. http://www.uwstout.edu/lib/thesis/2004/2004klingerb.pdf.
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Fernandez-Vest, Jocelyne. "Le Discours des Sames : oralité, contrastes, énonciation /." Lille : Paris : Atelier national de reprod. des thèses ; diff. Didier érudition, 1987. http://catalogue.bnf.fr/ark:/12148/cb34933373v.
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Bårdsen, Christina Erring. "Utvikling av bæreenhet for laptop tilpasset sykkel." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for produktdesign, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12965.
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Oppgaven ble gjort i samarbeid med idèhaver Aksel Tjora, der utgangspunktet var å utvikle et eller flere konsepter som gjør det enklere å frakte med seg en laptop på sykkel. Sykkel er et miljøvennlig og helsemessig gunstig transportmiddel, og en enkel løsning kan oppfordre til økt bruk av sykkel i sammenheng med reising til og fra jobb eller skole. Oppgaveteksten satte få begrensninger, men produktet måtte selvfølgelig være tilpasset brukeren og brukerens behov når det gjelder transportering av en laptop. Dette åpnet for muligheten til å utforske mange alternativer. Jeg innledet prosjektet med å definere en målgruppe, samt å sette meg inn i brukssekvensen for målgruppens daglige rutiner for å kartlegge brukerbehovet. Gjennom hele prosessen har jeg hatt stort fokus på brukervennlighet og testing. Det endelige resultatet skulle være et eller flere konsepter, samt en fungerende modell. En stor del av prosjektet har gått ut på å benytte ulike brukergrupper til informasjonsinnhenting gjennom diskusjoner, spørreskjemaer og brukertesting. Et viktig kriterium under valg av konsept var brukerens opplevelse av sikkerhet, og elementer som et fast oppheng og at formen kommuniserte tilhørighet på sykkelramma var avgjørende. Videre har jeg også vektlagt brukervennlighet og komfort, da det er avgjørende at produktet er raskt og enkelt å feste på sykkelen uten at den er i veien under bruk. Resultatet er en liten og nett pc-veske med plass til lader og noe utstyr som plasseres på overrøret på sykkelramma. Veska festes med et krokformet oppheng rundt overrøret på sykkelramma, og sikres med en strikk som går rundt underrøret. Opphenget gjør produktet unikt, og har derfor stått i fokus under detaljering. Videre har jeg lagt vekt på detaljer som gjør at produktet passer til både bruk på sykkel og på kontoret. Formen på veska følger sykkelramma og samtidig er enkel og diskret.
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CUNHA, ARTHUR LUIZ AMARAL DA. "JOINT SOURCE/CHANNEL CODING USING LAPPED TRANSFORMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2002. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=2759@1.
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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIORNeste trabalho é feito um estudo sobre compressão de imagens para canal ruidoso.Inicialmente, esquemas de complexidade moderada sem a utilização do princípio da separação de Shannon são investigados e simulados. Com isso, mostra-se que esquemas eficientes de codificação conjunta fonte/canal existem e podem eventualmente apresentar melhor performance do que esquemas separados de codificação e canal e fonte. São também investigados, algoritmos de codificação de imagens visando a transmissão num capital ruidoso. Nesse contexto, é proposto um esquema utilizando transformadas com superposição com boa performance, como mostram as simulações realizadas. O esquema posteriormente estendido para imagens multi- espectrais mostrando-se igualmente eficiente.
In the present dissertation we investigate image compression techniques for transmission over binary symmetric channels poluted with noise. Frist we simulate some known techniques for joint source/channel coding that dispenses with the use of error correcting codes. These techiniques may exhibit better performance when complexity and delay constraits are at stake. We further propose an image compression algorithm for noisy channels based on lapped/block transforms and block source/channel coding. We simulate the proposed scheme for various channel situations. The algorithm is further extented to handle compression and transmission of multiepectral remote sensing satellite imagery. Results for natural and multiespectral images are presented showing the good performance attained by the proposed schemes.
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Iliovitz, Erica Reviglio. "Uma analise prosodica dos lapsos da lingua." [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/270741.
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Orientador: Ester Mirian ScarpaDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Estudos da Linguagem
Made available in DSpace on 2018-07-28T12:39:26Z (GMT). No. of bitstreams: 1 Iliovitz_EricaReviglio_M.pdf: 2494963 bytes, checksum: ba5357896373ef2c28d52c70d3b60ea0 (MD5) Previous issue date: 2001
Resumo: Lapsos da língua são fenômenos lingüísticos que exibem uma ftonteira entre o esperado e o inesperado. Todavia, tanto lapsos quanto disfluência e erros normativos têm sido tratados sob a égide genérica de desvios. A abordagem dos lapsos pela literatura revela uma concepção lingüística que separa conhecimento (perfeito) e uso (imperfeito) da língua. Admitindo que os lapsos fazem parte do sistema da língua no qual o sujeito se insere e pelo qual ele se constitui através de relações, eles podem ser analisados como rupturas com a estabilidade de significação promovida pela subversão dos eixos metafórico (ou paradigmático) e metonímico (ou sintagmático), ao invés de desvios. A coleta de dados em situação ambiente é preferível à gravação de dados em laboratório porque experimentos controlados não revelam facetas do funcionamento da linguagem tratados aqui, como o cruzamento paradigmático e sintagmático de dizeres restringidos pela estrutura prosódica do enunciado. Os dados foram colhidos em conversas informais. Também foram utilizados os dados do Projeto NURC, armazenados em fitas cassete. O modelo usado para analisar os dados foi o de Nespor e Vogel (1986). Na análise, os lapsos foram classificados como paradigmáticos e sintagmáticos. Com relação à estrutura prosódica dos lapsos, foi concluído que os lapsos ocorrem, em ordem decrescente de probabilidade, entre ftases fonológicas dentro de uma ftase entonacional e entre ftases entonacionais dentro de um enunciado fonológico, mas nunca entre enunciados fonológicos. Além disso, eles ocorreram na palavra sobre a qual recai o acento nuclear da ftase entonacional.Em relação à estrutura silábica, houve troca mútua entre onsets das sílabas de palavras, preservando-se a rima. A literatura hipotetiza que os lapsos ocorrem numa seqüência de sete sílabas ou palavras. A análise mostra, porém, que, embora os lapsos ocorram dentro de trechos relativamente curtos dos enunciados, as sílabas envolvidas não devem ser vistas linearmente, mas estruturadas e parentetizadas segundo domínios da hierarquia prosódica
Abstract: Slips of the tongue are a linguistic phenomenon which shows a frontier between what is expected and what is unexpected. However, slips of the tongue, together with disfluencies and grammatical mistakes have been treated under the label of deviations or deviant speech from an idealized, perfect language. We assume that that slips of the tongue take part on the language system in which subjects are inserted and through which they constitute themselves. As a linguistic phenomenon, slips of the tongue can be analized as a rupture with the stability of meaning promoted by a subvertion of both the methaphorical (or paradigmatic) dimension and the metonimical (or syntagmatic) one, rather than deviations. The analised data were collected through notes taken from everyday situations. This method seemed to be preferable to data recording in laboratory because controlled experiments do not reveal aspects of language system such as the crossing of the paradigmatic/sintagmatic dimensions restricted by the prosodic structure of the speech. Data were collected in informal conversations. NURC Project data were also considered. The Nespor and Vogel's model (1986) was used to analyse the data. Slips of the tongue were classified as paradigmatic and syntagmatic ones. With regard to their prosodic structure, syntagmatic slips are most likely to occur between phonological phrases inside an intonational phrase and between intonational phrases within a phonological utterance, but not between phonological utterances. Most of the paradigmatic slips occured in the word that bears the nuclear stress in the intonational phrase. As for the syllabic structure, there were exchanges between onsets in words syllables, whereas the rhyme was preserved. It is suggested in the litterature that slips of the tongue occur in a sequence of seven syllables or words. This analysis shows, however, that although slips occur in short stretches of utterance, the syllables which are involved in them should not be seen as a linear sequence, but rather as part of the structure of upper domains of the prosodic hierarchy
Mestrado
Mestre em Linguística
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Allik, Alo. "Computational composition strategies in audiovisual laptop performance." Thesis, University of Hull, 2014. http://hydra.hull.ac.uk/resources/hull:11606.
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We live in a cultural environment in which computer based musical performances have become ubiquitous. Particularly the use of laptops as instruments is a thriving practice in many genres and subcultures. The opportunity to command the most intricate level of control on the smallest of time scales in music composition and computer graphics introduces a number of complexities and dilemmas for the performer working with algorithms. Writing computer code to create audiovisuals offers abundant opportunities for discovering new ways of expression in live performance while simultaneously introducing challenges and presenting the user with difficult choices. There are a host of computational strategies that can be employed in live situations to assist the performer, including artificially intelligent performance agents who operate according to predefined algorithmic rules. This thesis describes four software systems for real time multimodal improvisation and composition in which a number of computational strategies for audiovisual laptop performances is explored and which were used in creation of a portfolio of accompanying audiovisual compositions.
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Angéus, Kuoljok Susanna. "Nominalavlednigar på "ahka" i lulesamiskan /." Uppsala : Acta Universitatis Upsaliensis, 1997. http://catalogue.bnf.fr/ark:/12148/cb41304438w.
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Skevakis, Anthony Nicholas. "An Analysis of Teacher Perceptions of a Principal's Leadership Behaviors Associated with the Integration of a One-to-One Laptop Program for Students in a Parochial Secondary School." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/194772.
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The purpose of this explanatory single-case case study was to investigate teachers' perceptions of a principal's leadership behavior associated with the integration of a one-to-one laptop program in a parochial secondary school. The sample included the school principal and teachers who have had at least one year of teaching experience at the parochial school with laptop computers. Owing to a mixed methods case study approach, data was collected from four sources: a semi-structured personal interview with the school principal, semi-structured personal interviews with teachers, a focus group interview with teachers, and teachers' completion with an electronic version of the Principal Leadership Questionnaire. These multiple forms of data were collected to support data-rich triangulation on the same set of research questions. SPSS was used to assist with data analysis of the electronic survey. Cronbach's alpha was used to determine the reliability of the instrument. Themes were extracted from the semi-structured personal interviews and focus group. The findings from this study provided teachers' perceptions of a principal's leadership behaviors associated with the integration of a one-to-one laptop program for students in a parochial secondary school.
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Olivera, Rodríguez María Paz. "Usos y percepciones de los niños y niñas respecto a la laptop XO del programa "Una laptop por un niño"." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2012. http://tesis.pucp.edu.pe/repositorio/handle/123456789/4751.
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Desde 2008 el Ministerio de Educación ha venido ejecutando el programa Una laptop para cada niño, que tiene como objetivo la incorporación de computadoras portátiles en las aulas para incrementar el acceso a la información y la adquisición de habilidades relacionadas al uso de procesadores de texto y otros programas (Negroponte 2011: 6). El programa define su relevancia en el planteamiento que en el mundo actual hay una gran necesidad de acceder a la información, sobre todo, en los países más pobres del planeta.
El objetivo de la investigación es conocer las percepciones y usos de los niños de la I.E. Huarangal y de la I.E. Guillermo Wagner de Cieneguilla con respecto a las laptop XO del programa Una Laptop por Niño.
Con este propósito se realizó un trabajo de campo de un mes y medio de duración en las escuelas mencionadas en los que se recogió información sobre la manera cómo se integra al proceso educativo la laptop XO.
Analizando la información en el marco de los planteamientos de diversos investigadores especialistas en TICs, específicamente, a partir de sus trabajos sobre la utilización de éstas en el proceso de enseñanza-aprendizaje, se ha corroborado la evaluación realizada por el BID, MINEDU y ONG peruana Grade en 2010, en el sentido que el programa Una Laptop por Niño no ha tenido resultados positivos en el Perú. El fracaso del programa en dos años de implementación se explicaría por razones de diverso carácter, que irían desde la falta de visión respecto a lo que es un programa, la limitada infraestructura a las que se enfrenta el programa, hasta los actores claves que no han sido tomados en cuenta.
A partir de lo anterior, algunas de las conclusiones a las que llega el trabajo es que la laptop XO es utilizada de diferentes maneras por los niños beneficiarios de ambas escuelas. Estos usos dependen (1) de las condiciones físicas de la escuela; (2) del grado de información de los directores y profesores acerca del programa; y (3) de la opinión que ellos tengan del mismo.Tesis
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Klausutis, Timothy J. "Adaptive lapped transforms with applications to image coding." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/15925.
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Ruan, Sien. "Lapped transforms in perceptual coding of wideband audio." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82628.
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Audio coding paradigms depend on time-frequency transformations to remove statistical redundancy in audio signals and reduce data bit rate, while maintaining high fidelity of the reconstructed signal. Sophisticated perceptual audio coding further exploits perceptual redundancy in audio signals by incorporating perceptual masking phenomena. This thesis focuses on the investigation of different coding transformations that can be used to compute perceptual distortion measures effectively; among them the lapped transform, which is most widely used in nowadays audio coders. Moreover, an innovative lapped transform is developed that can vary overlap percentage at arbitrary degrees. The new lapped transform is applicable on the transient audio by capturing the time-varying characteristics of the signal.
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Zadel, Mark. "A software system for laptop performance and improvisation /." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=98594.
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Laptop performance---performance on a standard computer system without novel controllers, usually by a solo musician---is an increasingly common mode of live computer music. Its novelty is diminishing, however, and it is frequently described as being uninteresting. Laptop performance often lacks the sense of effort and active creation that we typically expect from live music, and exhibits little perceivable connection between the performer's actions and the resulting sound. Performance software designs tend to constrict the flow of control between the performer and the music, often leading artists to rely on prepared control sequences. Laptop performers become "pilots" of largely computerized processes, detracting from the live experience.This thesis project presents an alternative software interface that aims to bring a sense of active creation to laptop performance. The system prevents the use of prepared control sequences and allows the live assembly of generative musical processes. The software resembles a freehand drawing interface where strokes are interactively assembled to create looping and cascading animated figures. The on-screen animation is mapped to sound, creating corresponding audio patterns. Networks of strokes are assembled and manipulated to perform music. The system's use of freehand input infuses the music with natural human variability, and its graphical interface establishes a visible connection between the user's actions and the resulting audio.
The thesis document explores the above issues in laptop performance, which motivated this research. Typical examples of performance software are presented, illustrating the interface design patterns that contribute to this situation. The thesis software project is presented, describing its goals, design and implementation. The properties of the interface are discussed in light of the project's initial objectives. It is concluded that the system is a solid step toward a novel approach to laptop performance software.
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Oss, Keif T. "Creating an autonomous laboratory environment utilizing laptop support." Menomonie, WI : University of Wisconsin--Stout, 2004. http://www.uwstout.edu/lib/thesis/2004/2004ossk.pdf.
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Miller, Dustin William. "One-to-one laptop pilot a grant proposal /." Online version, 2009. http://www.uwstout.edu/lib/thesis/2009/2009millerd.pdf.
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Chong, Petra (Petra Su Yen) 1976. "A story matching system for the Victorian Laptop." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/86287.
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Thesis (S.B. and S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.Includes bibliographical references (p. 77-79).
by Peter Chong.
S.B.and S.M.
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Rigoni, Dirce Méri De Rossi Garcia Rafaelli. "Laptop educacional : mecanismos sociocognitivos nos contextos de aprendizagem." reponame:Repositório Institucional da UCS, 2012. https://repositorio.ucs.br/handle/11338/643.
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Essa dissertação possui um caráter exploratório, em que o delineamento
metodológico é dado pelo estudo de caso que investiga os mecanismos
sociocognitivos dos estudantes em interação com o laptop educacional. Os
estudantes, com idade de 13 anos, frequentavam o sétimo ano do ensino
fundamental, de uma escola pública municipal, que participa da etapa dois do
projeto Um computador por aluno (UCA) do Governo Federal. Esse estudo buscou
compreender os mecanismos sociocognitivos presentes nas trocas interindividuais
dos estudantes nos diferentes contextos de aprendizagem em que faziam uso do
laptop educacional na disciplina de história. Para a análise dos mecanismos
sociocognitivos dos estudantes, nesse contexto, foi utilizado o referencial piagetiano.
Com base na organização dos dados, as categorias de análise foram os contextos
de aprendizagem e os mecanismos sociocognitivos. Concluímos que as
possibilidades da interface física e digital nos contextos de aprendizagem,
considerando a mobilidade do laptop na modalidade 1:1, podem configurar novas
relações e desafios no processo de ensino e aprendizagem. Com relação aos
mecanismos sociocognitivos, evidenciamos uma tendência de relações de
conformismo e de coação nas trocas interindividuais e um falso equilíbrio de
cooperação.Submitted by Marcelo Teixeira (mvteixeira@ucs.br) on 2014-06-06T15:44:35Z No. of bitstreams: 1 Dissertacao Dirce Rigoni.pdf: 1213768 bytes, checksum: 80653838764b7f30f53e7182e920c963 (MD5)
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This paper has an exploratory character, which the research design is a study that investigates the socio-cognitive mechanisms of students interaction with educational laptop. Students in the age of 13 years old, in seventh grade of an elementary public school, that participates in second level of the Federal Government project Um computador por aluno (UCA). This study attempted to understand the present sociocognitive mechanisms in the interindividual exchanges of students in different learning contexts that made use of education laptop in the history subject. For the analysis of students' socio-cognitive mechanisms in this context, we used the Piaget theory. Based on data organization, the categories of analysis were the contexts of learning and social cognitive mechanisms. We conclude that the possibilities of physical and digital interface in Learning Contexts, considering the mobility of the laptop in mode 1:1, can set up new relationships and challenges in the teaching and learning. Regarding the socio-cognitive mechanisms, we noted a trend of conformity relations and coercion in exchanges interindividual and a false balance of cooperation.
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França, Célia da Conceição de Assis. "Inclusão digital na educação básica brasileira - projeto UCA no Estado do Pará: um estudo de caso." Master's thesis, Universidade de Évora, 2012. http://hdl.handle.net/10174/11190.
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O presente trabalho aborda o projeto UCA, na escola Municipal Antônia Rosa, no Município de São João da Ponta, no Pará. Neste Estudo investigamos os impactos do projeto na escola, nos professores e nos alunos. A revisão da literatura foi focada nos fundamentos teóricos no campo da inclusão digital, tecnologia na educação e o uso educacional do laptop no contexto da escola. Adotamos o estudo de caso como metodologia e para a coleta de dados, utilizamos entrevistas individuais e em grupo. Os resultados indicam as atividades de pesquisa na Internet como a principal atividade desenvolvida pelos professores e os alunos dizem que eles usam o laptop mais para entretenimento do que para realizar atividades voltadas para o ensino e a aprendizagem. A pesquisa também indica que o projeto representou uma vitória para a inclusão digital e social, especialmente pela distribuição de laptops, o que permitiu não apenas a familiarização do aluno, mas também de toda a sua família, nesta tecnologia previamente desconhecida para a maioria das pessoas no município; ### ABSTRACT: DIGITAL INCLUSION IN BRAZILIAN BASIC EDUCATION – THE UCA PROJECT IN PARÁ STATE: A CASE STUDY This paper discusses the UCA project, in the brazilian municipal school, Antonia Rosa, in São João da Ponta, Pará. In this study, we investigated the project‟s impacts in the school, teachers and students. The literature review was focused on the theoretical foundations in the field of digital inclusion, technology in education and the educational use of the laptop in the school context. We adopted the case study as the main methodology and for data collection, we used individual and group interviews. The results indicates that search activities on the Internet was the main activity developed by teachers, and students say they use the laptop mostly for entertainment than to carry out activities aimed at teaching and learning. Research also indicates that the project represented a victory for digital and social inclusion, especially for the distribution of laptops, which allowed not only to familiarize the student, but also his entire family, in this technology previously unknown for the most of the people in the municipality.
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Delaporte, Yves. "Le vêtement lapon : formes, fonctions, évolution." Paris 1, 1990. http://www.theses.fr/1990PA010533.
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Ce travail est principalement fonde sur des enquetes ethnologiques, menees de 1969 a 1988 dans une vingtaine de communautes lapones. La premiere partie decrit et classe les differentes pieces, en distinguant entre variantes regionales, variantes fonctionnelles correspondant a une adpatation au milieu, et variantes individuelles. La seconde partie decrit les chaines operatoires de fabrication du vetement. La troisieme partie replace le vetement dans la societe lapone. La fonction semiotique est faible dans le nord de la laponie, tandis qu'un systeme symbolique tres elabore a ete decouvert dans le sud. On etablit une typologie des relations entre les differentes fonctions du vetement (chap. I). Les modalites actuelles du port du vetement lapon varient selon les localites, mais partout l'elevage du renne apparait comme le principal facteur de son maintien (chap. Ii). D'importants phenomenes de mode ont entraine une evolution parallele ou divergente de certaines pieces, et leur differenciation regionale. La mode peut resulter d'une competition entre femmes a l'interieur d'une meme communaute, ou d'emprunts aux communautes voisines (chap. Iii). La notion de variante individuelle est un outil indispensable pour comprendre l'evolution du vetement, et l'apparition des variantes regionales (chap. Iv). L'acculturation vestimentaire peut prendre differentes formes : reduction du nombre des variantes fonctionnelles, combinaisons de pieces lapones et de pieces europeennes, creation de pieces composites (chap. V). En conclusion est soulignee l'importance de la notion de systeme vestimentaireThis work is essentially based on ethnological fieldwork carried on from 1969 to 1988 in some twenty lappish communities. The first part describes and classifies the various cloth items by distinguishing between regional variations, functional variations related to an environmental adaptation and individual variations. The second part describes the operational stages of cloth making. The third part resituates clothing in lappish society. The semiotic function can be qualified as weak in northern lappland, whereas a highly sophisticated symbolic system has been discovered in southern lappland. A typology of the relationships between the various functions of clothing is established in ch. I. Current ways of clothing vary with the localities but reindeer breeding seems to be the main factor in its continuity everywhere (ch. Ii). Parallel or divergent evolutions in certain items as well as their regional differentiations are due to fashion active processes. A fashion may result from competition between within a single community or from interborrowings by contiguous communities (ch. Iii). Evolution and regional variations in clothing can be understood through the key notion of individual varaints (ch. Iv). Clothing acculturation can take different shapes : a reduction in the rate of functional variants, combinations of lappish with european items, creation of compound items (ch. V). The conclusion underlines the importance of the notion of a clothing system
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Lorway, Norah. "A portfolio of fixed electroacoustic and live laptop works." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/5183/.
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This PhD thesis includes a portfolio of electroacoustic and live electroacoustic compositions carried out at the electroacoustic music studios at the University of Birmingham. The portfolio consists of fixed multichannel and stereo works as well as a piece for solo live laptop performance written using max/msp and the supercollider programming language. I will also discuss my work with laptop performance and its influence on my compositional output during this Ph.D.
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Lee, Sophia J. (Sophia Juhee) 1977. "Wireless bridges : the laptop experience in the learning environment." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/68397.
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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Architecture, 2003.Includes bibliographical references (leaf 59).
The Laptop experience has changed the way people work and interact with learning space. The integration of technology in learning environments affects the usage of space and produces new learning patterns. However, new learning patterns do not come automatically with new technology. Technology, space and social behavior affect each other, and cannot have their full effect without adjusting to one another. Therefor, in order to optimize the use of wireless technology, both spaces and social behaviors have to change. To understand and design space which accommodates the new technology, we need to observe and see how people interact with space and what kind of learning and interacting patterns emerge with mobile technology. This thesis begins this process of observation and analysis through an examination of how several students at MIT utilize wireless laptops during the semester.
by Sophia J. Lee.
S.M.
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Chappelear, Lewis Hayes. "Parent Perceptions of a One-to-One Laptop Program." ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/6407.
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Parents are important to the success of the one-to-one computing programs that are becoming more commonplace in secondary classrooms. Parents' opinions can influence the success of these programs or doom them to failure; however, little is known regarding parents' attitudes about these programs. To understand parental attitudes toward a one-to-one laptop program, this qualitative exploratory case study used Rogers's diffusions of innovations theory on how new ideas and technologies spread. Participants included 11 parents of students attending 2 urban secondary schools with similar demographics in the southwestern United States. Data were collected through focus group sessions, follow-up interviews, and relevant documents. Data were analyzed through qualitative content analysis and coding. Findings revealed that parents loved the one-to-one laptop program, saw technology to be a right of all students, thought that the district-managed laptops were used more for academic rather than educational purposes due to content filters and other restrictions, and believed that a central school-wide technology support system available to all stakeholders, including parents, was critical to the success of the one-to-one laptop program and approval by parents. This study may create positive social change by providing new insights and beneficial tips to educational organizations looking to use one-to-one laptop programs most effectively.
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O'Hara, Thomas. "Program Evaluation of a Laptop Initiative for Student Learning." ScholarWorks, 2018. https://scholarworks.waldenu.edu/dissertations/5512.
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Administrators of a New Jersey school district implemented a 1:1 laptop initiative in Grades 6-8 in 2013 to bolster student achievement. An evaluation had not been conducted to ascertain the effectiveness of the initiative. The purpose of this study was to examine the effect of the 1:1 laptop initiative on student achievement. The conceptual framework for this study was Stufflebeam's context, input, process, and product evaluation model. The focus of the research question was the differences in New Jersey Assessment of Skills and Knowledge math scores between students involved in the 1:1 laptop initiative for 1 year and students who were not involved. A quantitative post hoc analysis was used to examine data collected from the state assessment database using a convenience sample of only 6th grade students (n = 109). The students' data on the statewide test revealed a mean difference between the 1:1 group (n = 57) which scored 13 points higher than the control group (n = 52). Results of an independent t test were statistically significant at the p = 0.062 level. A position paper based on study findings includes recommendations to the local board of education to continue the initiative and plan professional development for teachers. Further research should be conducted to evaluate the effectiveness of the initiative. Investments in technology such as this initiative may result in improved teaching and learning as a positive social change outcome. Being involved in a 1:1 laptop initiative at an early age in school may assist students in becoming literate in the use of technology, which may help them meet their future career goals.
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Vivacqua, Maria Victoria Guinle 1967. "My clean is dirty : erro ou lapso?" [s.n.], 2002. http://repositorio.unicamp.br/jspui/handle/REPOSIP/269299.
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Orientador: Carmen Zink BologniniDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Estudos da Linguagem
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Resumo: Esta dissertação procurou questionar os pressupostos teórico-metodológicos do que se denomina, tradicionalmente, por erro no processo de aquisição de língua materna (LM) e de língua estrangeira (LE), Inglês, e propor a denominação de lapsos de língua, baseados em Freud e Lacan, para tais ocorrências. Esta denominação implica na concepção de um sujeito falante, que se constitui simultaneamente à linguagem e traz à baila a subjetividade do sujeito-professor e do sujeitoaprendiz. Para vislumbrarmos como essa subjetividade se presentifica na relação de sala de aula de LE, buscamos, através da análise de enunciados, investigar de que maneira os mecanismos de metáfora, metonímia e heteronímia operam na aquisição/aprendizado de LM e de LE, a partir dos trabalhos de Jakobson, Lacan e De Lemos. Recorremos, também, à Análise do Discurso de linha francesa para exemplificarmos como as formações discursivas, do professor e do aluno, são demarcadas pela ideologia que assinala uma relação dissimétrica, segundo Pêcheux, do professor na interpretação do erro/lapso dos enunciados de aprendizes, na aquisição/aprendizado de LE. A partir do diálogo entre as teorias de aquisição da linguagem e da concepção de sujeito da Análise do Discurso e da Psicanálise, esperamos desconstruir o olhar dado ao erro na concepção tradicional, gerativista, estruturalista e comunicativa no processo de awuisição/aprendizado de Inglês, como língua estrangeira
Abstract: This research is aimed to question the methodological and theoretical notion of what is traditionally understood by error in the language acquisition process of the mother tongue (first language) and English, as a second language. We also propose to those phenomena the notion of slip of the tongue, based on concepts by Freud and Lacan. The comprehension of errors as slips of the tongue implies a subject-speaker that is built simultaneously to the language. This fact brings up to the scene the subjectivity of the subject-teacher and the subject-student. In order to see the way this subjectivity is revealed in the second language class, through out the presentation of some statements, we will show how the metaphor, metonymy and heteronymy mechanisms operate on the acquisition of the first and the second languages, based on Lacan, Jakobson and De Lemos. In addition to that, we will be using the Discourse Analysis, the French theory, to illustrate how the discoursive formations of the teacher and the students are marked by the ideology which shows a dissimetric relation, according Pêcheux, in the teacher' s interpretation of students'assertions of errors/slips, on the acquisitionllearning of the second language. Starting from the dialogue between the theories of the language acquisition, and the concept of the subject of the Discourse Analysis and Psychoanalysis, we hope to provi de a different way of understanding the error in the traditional concept, generativist, struturalist and communicative in the process of acquisitionllearning of English as a second language
Mestrado
Ensino-Aprendizagem de Segunda Lingua e Lingua Estrangeira
Mestre em Linguística Aplicada
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Tremblay, Jessika. "One laptop per child: technology, education and development in Rwanda." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=104579.
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This thesis critically examines the One Laptop Per Child (OLPC) organization in the context of Rwanda‘s socioeconomic development plans for the year 2020. OLPC is a relatively new, large-scale development organization dedicated to the improvement of education in the world‘s poorest countries through the distribution of laptops specially designed for children. Rwanda is one of the poorest countries to have signed on the program since its founding in 2005, and ranks in the top five subscribers, having purchased 110,000 laptops for distribution among primary school students. The Government of Rwanda is committed to establishing a middle-income economy on the basis of an information economy, and has adopted OLPC to suit this agenda, while OLPC seeks to focus on the educational aspects of the program. This thesis, in the tradition of the anthropology of development, analyzes the motivations and ideals that guide both OLPC and the Government of Rwanda, and proposes that evaluating the program is better done by understanding it in its local context. This research is based on three months of ethnographic fieldwork in four grade five classrooms in urban Rwanda, along with interviews with key members of OLPC.Cette thèse examine l'organisation, « One Laptop Per Child (OLPC)» dans le contexte des plans de développement socioéconomique du Rwanda pour l'année 2020. Fondé en 2005, OLPC est relativement grande et récente comme organisation. Cette fondation cherche à améliorer la qualité de l'éducation dans les pays les plus pauvres en distribuant des laptops conçus spécialement pour les enfants. Le Rwanda est un des pays les plus pauvres ayant souscrit à OLPC, mais, ayant aussi acquis 110,000 laptops, se trouve à être dans les cinq premiers pays souscrivant. Le gouvernement Rwandais cherche à établir une économie de taille moyenne basé sur l'informatique, et a adopté le projet OLPC pour servir cet agenda, alors qu'OLPC cherche plutôt à promouvoir l'amélioration de la qualité de l'éducation. Cette thèse, suivant la tradition de l'anthropologie du développement, analyse les motivations et les idées qui guident OLPC et le gouvernement Rwandais, en proposant qu'il vaille mieux évaluer le programme en contexte des valeurs locales. Cette recherche est basée sur trois mois d'étude ethnographique dans quatre écoles primaires Rwandaises, supplémentée d'interviews avec les chefs d'équipe et volontaires d'OLPC.
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Liu, Enfei. "USB dongles for mobile broadband : Data communications for laptop computers." Thesis, KTH, Radio Systems Laboratory (RS Lab), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-169898.
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Today a growing number of people need to work on laptops with wireless Internet connection. There are two common wireless Internet access solutions: wireless local area network (WLAN) via hotspot, and high speed wide area cellular network via mobile broadband device such as 3G/4G Universal Serial Bus (USB) dongle. USB dongle was the pioneer product in 3G/4G market, and it is still a popular device in many countries. Mobile broadband can offer both high speed access and mobility. Technically mobile broadband allows Internet connection as long as your mobile transceiver can access your cellular network operator’s network. However, in practice the data rates experienced by a user via mobile broadband are not comparable to the data rates that are available via WLAN. Moreover, mobile broadband has been implemented according to multiple different standards. Hence, in order to provide a user with locally optimal service requires that user must make use of heterogeneous networks. Furthermore, the variety of networks gets increasing due to the emergence of various 4G networks. The aim of this thesis is to explore how heterogeneous networks could be exploited to provide a user of a laptop computer with locally optimal service, while hiding the complexity of this heterogeneous service. The research focuses on the implications of integrating multiple network interfaces into a single USB dongle. Our research shows that multi-mode USB dongle is still needed in market, though there are competitions from smartphones and mobile WiFi devices. We point out that the PPP (Point to Point Protocol) based USB dongle should update to Ethernet USB protocols such as RNDIS (Remote Network Driver Interface Specification) or USB CDC (Communications Device Class) protocols. Furthermore, we suggest a USB dongle should be able to work as a WLAN access point to share Internet with other mobile devices, and it should also work as a WLAN client which can join other hotspots. If hotspot operators can authenticate USB dongles by SIM cards, then users can easily access a great number of hotspots belong to these operators.Mer än någonsin behöver människan arbeta med bärbara datorer med anslutning till trådlöst Internet. Det finns två vanliga trådlösa Internet-anslutningar: trådlöst lokalt nätverk (WLAN på engelska) via en hotspot, eller höghastighets mobilnät via mobilt bredband som 3G/4G Universal Serial Bus (USB) dongel. USB dongeln var pionjär produkten inom 3G/4G marknaden, och den är fortfarande en populär enhet i många länder. Mobilt bredband kan erbjuda både tillgång till höga hastighet och bra mobilitet. Mobilt bredband tillåter, rent tekniskt, användaren hålla en Internet-anslutning så länge mobilen har tillgång till mobilnätets operatörsnät. Men i praktiken är datahastigheterna, som användaren upplever ha via det mobila bredbandet, inte jämförbar med de datahastigheter som är tillgängliga via WLAN. Dessutom har mobilt bredband implementerats enligt flera olika standarder. Således, för att förutse en användare med en optimal lokal tjänst, krävs det att användaren måste använda heterogena nätverk. Dessutom blir olika nätverk allt större på grund av uppkomsten av olika 4G-nät. Syftet med denna avhandling är att undersöka hur heterogena nätverk skulle kunna utnyttjas för att förutse en laptop användare med optimal lokal nätverksservice, samtidigt dölja komplexiteten för användaren om den heterogena tjänsten. Forskningen fokuserar på konsekvenserna av att integrera flera nätverksgränssnitt till en enda USB-dongel. Vår forskning visar att det fortfarande behövs en multi-mode USB dongel på marknaden, dock existerar det konkurrens från smartphones och mobila WiFi-enheter. Vi påpekar även i avhandlingen att PPP (Point-to-Point Protocol) baserade USB dongeln bör uppdateras till Ethernet USB-protokoll, såsom RNDIS (Remote Network Driver Interface Specification) eller USB CDC (Communications Device Class) protokoll. Vidare föreslår vi att en USB-dongel bör kunna fungera som en kopplingspunkt för att dela Internet med andra mobila enheter, och att den också bör fungera som en WLAN-klient som kan ansluta sig till andra hotspots. Om hotspot operatörer kan autentisera USB-donglar genom SIM-kort, så kan användarna enkelt få tillgång till ett stort antal hotspots som tillhör dessa operatörer.
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吳達源 and Tat-yuen Ng. "Corporate landscape design for Cathay Pacific headquarters at Chek LapKok." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31980697.
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Chan, Sze-wang Frankie, and 陳仕宏. "Regional Airline Headquarters and Crew Training Centre at Chek LapKok." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31984423.
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Mai, Enping (Shirley). "Models for identifying lapsed buyers in a non-contractual setting." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2008. http://wwwlib.umi.com/cr/syr/main.
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Neiva, Sonia Maria de Sousa Fabricio. "O laptop educacional em sala de aula: práticas pedagógicas construídas." Pontifícia Universidade Católica de São Paulo, 2013. https://tede2.pucsp.br/handle/handle/9718.
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Previous issue date: 2013-05-17This research aimed to investigate the teaching practices that occur with the use of educational laptop in the classroom, in order to implantation the Project One Computer per Student (UCA). The research took place at the State School Dom Alano Marie Du Noday Palmas (Tocantins, Brazil). The theoretical reference adopted treats the context of the knowledge society, education policies aimed to insertion of technology in schools, pedagogical practices through the use of technology and its articulation with the curriculum and project methodology, supported by Boaventura de Sousa Santos, Toffler, Dowbor , Hargreaves, Burbules, Mattelart, Fuks, Chauí, Almeida, Moraes, Pacheco, Apple, Silva, Gimeno Sacristán, Costa Monteiro and Loureiro, Batista, Cuban, Dewey, Schön, Goodson, Hernández, Prado, Freire, Papert, Almeida and Valente, Cappelletti, Esteban, among others. The theoretical-methodological principles are based on qualitative research supported in interpretive research of Erickson (1984, 1986, 1989). The data were collected from the following sources: documents related to UCA Project, Political- Pedagogical Project, field diary, interviews, focal group and questionnaires. The research subjects were students, parents, teachers, project managers and Training Brazil-UCA trainer at school. This study shows that the school lived with some different actions and conventional practices in the same time. The parents indicated that their children became more autonomous. Despite favorable to the insertion of the laptop at the school, parents had a wary eye about the changes that the computer causes in teaching practice, and they said that there was no change in the relationship between parents and the school. Managers betray the conception of the technologies being adornment, teaching and learning appendage. The students recognize that the class is more interesting. They can explore many tools. They learn better and in a different way. The teachers conceptions about the education laptop use in class is conditioned to technological appropriation, the technicalpedagogical support and influence of initial training. In the fifth and sixth years of the Dom Alano Marie Du Noday, the study revealed that two women teachers created loopholes. They gave new meaning to what they did when incorporated cooperative work, dialogue and reflection on teaching practice, establishing improvement in the teacher-student and student-student relationship. Those two women teachers had the student how the center teaching and learning process. Among other teachers of the Dom Alano Marie Du Noday, with whom there was also approach on the subject studied, it was verified that they walked toward a reflective practice, but the those teachers activities involving the laptop had not student how center of the process of teaching and learning. In many cases, the use of computer reinforces actions carried out with pencil and paper. Finally, it is considered that the answers are provisional and concerning the researched moment
Esta tese teve o objetivo de investigar as práticas pedagógicas com o uso do laptop educacional em sala de aula, tendo em vista a implantação do Projeto Um Computador por Aluno (UCA). A pesquisa teve como local o Colégio Estadual Dom Alano Marie Du Noday em Palmas (TO). O referencial teórico trata da contextualização da sociedade do conhecimento e das políticas educativas voltadas para inserção das tecnologias nas escolas. Investigamos as práticas pedagógicas associadas ao uso das tecnologias, sua articulação com o currículo e a metodologia de projetos, tendo como suporte Boaventura de Sousa Santos, Toffler, Dowbor, Hargreaves, Burbules, Mattelart, Fuks, Chauí, Almeida, Moraes, Pacheco, Apple, Silva, Gimeno Sacristán, Costa, Monteiro e Loureiro, Batista, Cuban, Dewey, Schön, Goodson, Hernández, Prado, Freire, Papert, Almeida e Valente, Cappelletti, Esteban, entre outros. Os aportes teórico-metodológicos fundamentaram-se nos princípios da investigação qualitativa apoiados na pesquisa interpretativa de Erickson (1984, 1986, 1989). Os dados foram coletados das seguintes fontes: documentos relacionados ao Projeto UCA, projeto político-pedagógico, diário de campo, entrevistas, grupo focal e questionários. Os sujeitos da pesquisa foram alunos, pais, professores, gestores e formadora do projeto Formação Brasil-UCA no colégio. Este estudo mostra que a escola convivia com algumas ações diferenciadas e práticas convencionais ao mesmo tempo. Os pais apontaram que seus filhos se tornaram mais autônomos. Apesar de favoráveis à inserção do laptop no espaço escolar, os pais tiveram um olhar cauteloso sobre as alterações que o computador provoca na prática pedagógica e afirmaram que não houve mudança na relação pais-escola. Os gestores deixaram transparecer a concepção de as tecnologias serem adereço, apêndice do processo de ensino e aprendizagem. Os alunos reconheceram que a aula era mais interessante. Podem explorar muitas ferramentas. Aprendem melhor e de um jeito diferente. A visão docente sobre o uso do laptop educacional em sala de aula é condicionada à apropriação tecnológica, ao apoio técnicopedagógico e à influência da formação inicial. No quinto e sexto anos do Dom Alano Marie Du Noday, o estudo revelou que duas professoras criavam brechas, davam novo significado ao que faziam, quando incorporavam o trabalho cooperativo, o diálogo e a reflexão à prática pedagógica, estabelecendo melhoria na relação professor-aluno e alunoaluno. Essas duas docentes tinham o aluno como centro do processo de ensino e aprendizagem. Entre outros professores do Dom Alano Marie Du Noday, com os quais também houve abordagem sobre o assunto estudado, foi possível verificar que eles caminhavam rumo a uma prática reflexiva, mas as atividades desses docentes envolvendo o laptop ainda não tinham o aluno como centro do processo de ensino e aprendizagem. Em muitos casos, o uso do computador reforçava ações realizadas com lápis e papel. Por fim, considera-se que as respostas são provisórias e concernentes ao momento pesquisado
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Nga, Nguyen Thi Hang, and 阮氏姮娥. "The Factors Affecting Laptop Purchase Intention – Case Study of Vietnam Laptop Market." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/60649399136835058992.
Full textAbstract:
碩士國立高雄應用科技大學
製造與管理外國學生碩士專班
104
Laptop product is gradually becoming a definite need than a luxury in today’s fast paced world. In recent years, the laptop market has developed dramatically in over the world in general and in Vietnam in particular. The purpose of this study was to determine the factors affecting purchase intention in Vietnamese laptop market. With a study on literature review and the conducting of surveys with 171 customers, five factors have been mentioned including price, marketing, brand, after sale service, product feature on purchase intention. The data are analyzed through some analysis steps including reliability analysis, exploratory factor analysis, correlation analysis, multiple linear regressions and one-way analysis of variance. The results of this study revealed that all these five factors have positive impacts on purchase intention and the factor named product feature shows the greatest impact. The findings have provided some useful implications for the businesses in building marketing policies to promote the selling-out activities of laptop in Vietnamese laptop market.
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Chi-FangTsai and 蔡奇芳. "RFID Antenna for Laptop Application." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/76219587634758979562.
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碩士國立成功大學
電機工程學系專班
98
Radio frequency identification (RFID) system communicates with each other by using electromagnetic wave in the air through the antenna of readers and tags. The reader antenna plays an important role of receiving and demodulating signals from the tag antenna. The performance of the reader antenna will directly affect the transmission distance. The research mainly focuses on the RFID antenna design for laptop application. The proposed antenna acting as an internal laptop antenna next to the touch pad is designed by using rectangular spiral coil antenna. The proposed RFID antenna for small distance transmission worked as the reader antenna to identify the users’ smart card. The research is discussed by using near field coupling type antenna. The proposed rectangular spiral coil antenna with inductance produces a magnetic field in the near field to induce the tag antenna. The complex RF signal interference and mechanism in the laptop seriously affects the radiation performance of the antenna. To simulate the effect of the rectangular spiral coil antenna in the laptop, we establish a reasonable environment modal in EM simulation software and discuss the improvement of the performance of the antenna in the metal environment by implementing the magnetic material. It is seen the agreement of the construction prototype and the measurement result matches the theory modal and the simulation result. The result shows the proposed RFID antenna is suitable for laptop application.
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董須宏. "SAR Evaluation for laptop Computer." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/9nfqap.
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Tsai, Chung-Pei, and 蔡中培. "Acoustic Echo Canceller using Lapped Transforms." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/26898680207908712319.
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碩士國立交通大學
電子研究所
83
The speech broadcasts from the loudspeaker of the tele- conference system or the hands-free telephone can be transmitted back to the talker as a far-end talker-echo .The far-end talker- echo can be eliminated by the echo cancellation technique using an acoustic echo canceller. An acoustic echo canceller based on the lapped transform using DWT as the building block for the fast algorithm is proposed . We compare the proposed structure with other methods in terms of performance and complexity . With the proposed structure, we can get better ERLE and tracking capability than the original lapped transform structure presented by Malvar [16] . It has less computational load than the latter and much less computational load than the orthogonal transform LMS structure . Performance tested by using a speech input is also completed .
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Liao, Shih-jia, and 廖詩佳. "Internal Uniplanar Antennas for Laptop Computer." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/fyxj6w.
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碩士國立中山大學
通訊工程研究所
97
In this thesis, three small-size internal multiband antennas for laptop computer application for different wireless communication systems are proposed. In the first design, the coupling feed is incorporated to the planar inverted-F antenna to achieve a dual-resonance excitation in the lower band such that the obtained bandwidths can easily cover GSM850/900/DCS/PCS/UMTS operation. The effect of the user’s hand on the antenna is also studied. In the second design, we introduce the T-shaped coupling feed used in the PIFA for successful excitation of two wide operating bands to cover WLAN operation in the 2.4 GHz band and 5.2/5.8 GHz band, and the size reduction is even larger than 50%. Finally, a multiband monopole antenna with a band-notching slit is proposed. By embedding the slit of length about a quarter-wavelength at about 4 GHz, a band-notching characteristic is obtained, which leads to an additional resonance at about 3.5 GHz. Hence, three wide operating bands for covering all the desired operating bands of WLAN/WiMAX systems are achieved for the proposed antenna.
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Ho-Kun-Che and 何昆哲. "Contactless Power Converter for Laptop Computer." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/17953268031366547810.
Full textAbstract:
碩士國立臺灣科技大學
電子工程系
103
The main topic of this thesis is to develop a contactless inductive power converter. First this thesis gives a brief introduction to the contactless transducer, and analyzes the circuit performance at the energy transmitting terminals of the system. Then we study loosely-coupled transformer and its compensation framework, in order to obtain the mapped impedance spectrum for understanding the influence of inductive coupling in different load and realize their impact on the system. Based on these studies, we derive the equations for designing parameters of the chosen circuit architecture. A 1 cm distance contactless power converter used in notebook computers is realized with digital controlling algorithms. The experimental results verify that its entire-machine efficiency can be up to 84%.
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Liang, Ming-Han, and 梁明翰. "Antenna Design for Laptop Computers Applications." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/89y7xg.
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碩士南臺科技大學
電子工程系
107
This thesis proposes two antenna designs for laptop computer. First case presents a design of MIMO antennas for laptop computers operating at LTE band and 5G C-band. The antenna is designed with a parasitic open slot and a PIFA located at the top edge of the display ground. The antenna can cover the LTE 700 (0.698 – 0.787 GHz), LTE 2300 (2.305 – 2.4 GHz), LTE 2500 (2.5 – 2.69 GHz) and 5G C-band (3.4 – 3.6 GHz). The antenna size is 12 × 75 × 4 mm3 printed on a FR-4 substrate with a thickness of 0.8mm and adding a cooper sheet above the bending line. The size of the system ground made of copper sheet with a thickness of 0.1 mm is 200 × 310 mm2. Second case is a design of MIMO antennas for laptop computers. Two sets of MIMO antennas mainly operating at 5G C-band, and another set of loop antennas operating at WLAN. The MIMO antenna is designed with a coupled-fed loop located at the top edge of the display ground. Loop antenna placed between two sets of MIMO antennas. The MIMO antennas can cover the 5G C-band (3.3 – 3.8 GHz). The loop antenna can cover the WLAN. The MIMO antennas size is 12 × 75 × 4 mm3, loop antenna size is 15.8. × 15.8 mm2. And the antennas printed on FR-4 substrate with a thickness of 0.8 mm. The size of the system ground made of copper sheet with a thickness of 0.1 mm is 200 × 310 mm2.
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Chao, Shin-Shung, and 趙信雄. "Compact Antenna Designs for Laptop Computer Applications." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/78366595289269644793.
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碩士國防大學理工學院
電子工程碩士班
100
In this thesis, two small-size antennas for laptop computers are proposed. The first antenna design is based on an open-loop-antenna construction of 50-mm width and 10-mm height and mounted on the top of laptop computer for Long-Term-Evolution-wireless-system applications. To reduce the required antenna space and cover eight bands including the LTE 700/2300/2500, GSM 850/900/1800/1900, and UMTS bands, the antenna design consists of several metal strips for not only improving impedance match but also exciting a dual-resonance mode in the desired frequency bands. The second antenna design with a radiator area of a 20 × 15 × 8 mm3 is putted into USB dongle to find applications on Digital Television Systems. The antenna design which can cover four bands including the full band of the digital television systems, LTE 700 and GSM 850/900 bands is based on a monopole antenna construction for its simple structure and easily obtained performances by adding adequately designed metal strips and slots for improving impedance match in the desired frequency bands. In addition, we also obtain the equivalent circuit models of the antenna configurations for each step in the antenna development process.
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Tseng, Yung-sheng, and 曾勇昇. "Wideband Internal Antenna for Laptop PC Applications." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/91935006032745761752.
Full textAbstract:
碩士國立中央大學
電機工程學系在職專班
101
This thesis described how to design internal broadband antenna on the Laptop PC. Antenna has a broadband monopole antenna and three branches of the parasitic antenna. Its frequency covers 824–960MHz、1575MHz、1710–2690MHz、3300–3800MHz and 5150– 6000MHz. Since the size is 60mm (length) × 3.8mm (width) × 12mm (H), it could to be placed to the top or side of a laptop PC. The factors designed to analyze of the differentials in antenna performance include “Different positions in a laptop”, “The broadband monopole antenna positioning”, “Variations in the space between a broadband monopole antenna and the first parasitic antenna”, “Variations in the space between a broadband monopole antenna and the second parasitic antenna”, “Variations in the space between two sheet metal plates”, “Variations in the length of a broadband monopole antenna”, “Variations in the length of the first parasitic antenna”, “Variations in the length of the second parasitic antenna” and “Variations in the length of the third parasitic antenna”. In addition, we used optimized dummy fixture to practice them, and used Satimo SG64 near field system to test the antenna efficiency. The related design flow and test result are specific recorded in this thesis.