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Dissertations / Theses on the topic 'WLTP'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 March 2023

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1

Gregorsson, Martin, and Anton Pihl. "Verkningsgrad hos elbilars växellåda." Thesis, KTH, Maskinkonstruktion (Avd.), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298795.

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I denna rapport har verkningsgraden och förluster för elbilars växellådor analyserats. Med hjälp av en programvara för beräkning och analys av växellådor (Romax) skapades en verkningsgradsmatris för en elbils växellåda. I analysen användes standardkörcykeln WLTP (World harmonized light vehicle test procedure) som delades in i tre körcykler: stadskörning, blandad körning och motorvägskörning. Verkningsgradmatrisen beskriver växellådans verkningsgrad i förhållande till varvtal och moment. Därefter mappades varje sekunds varvtal och moment för respektive körcykel mot den framtagna matrisen för at

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2

Pavlovic, J., B. Ciuffo, G. Fontaras, V. Valverde, and A. Marotta. "How much difference in type-approval CO2 emissions from passenger cars in Europe can be expected from changing to the new test procedure (NEDC vs. WLTP)?" Elsevier, 2018. https://publish.fid-move.qucosa.de/id/qucosa%3A73238.

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After significant efforts from many parties, the World-wide harmonized Light duty Test Procedure (WLTP) has seen its light first as the UNECE Global Technical Regulation and then as the procedure adopted in the type-approval of light-duty vehicles in Europe. The paper focuses its attention on the main procedural differences between the WLTP and the New European Driving Cycle (NEDC), which is the test-procedure currently used in Europe. In general terms the WLTP appears to be a significant improvement compared to the NEDC. The main differences between two test procedures are identified and thei

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3

Antonelli, Debora. "Evoluzione della limitazione di sostanze inquinanti e climalteranti nelle normative di omologazione per autoveicoli." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10260/.

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Elaborato che si propone di evidenziare come i veicoli a benzina e a diesel possano soddisfare la normativa Euro 6. Si analizza il funzionamento dei principali sistemi di after-treatment come: catalizzatore SCR e DeNOx, trappola LNT, filtri FAP e DPF, sistemi EGR, per i motori ad accensione per compressione e catalizzatore TWC per motori ad accensione comandata. Parallelamente, si spiega l'evoluzione della normativa da Euro 6b a Euro 6c in termini di riduzione del numero di particelle di particolato emesse per km e come rispondere a queste più restrittive condizioni; viene introdotto, in via a

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4

Benedetto, Francesco. "Real Driving Emissions: analisi e sperimentazione di metodologie di selezione dei percorsi su strada e di definizione di cicli di laboratorio." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016.

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La presente tesi si occupa di identificare la metodologia utilizzata per la definizione di percorsi Real Driving Emissions. Nel particolare sono stati individuati due percorsi, uno in piano, definite RDE Moderate Track ed uno in quota, definito RDE Extended Track. Si è anche eseguita una analisi dei cicli su banco a rulli NEDC e WLTC in ottica Real Driving Emissions.

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5

Tambini, Lorenzo. "Ottimizzazione della strategia di controllo di un veicolo ibrido orientata alla riduzione consumi." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/19972/.

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Il seguente lavoro di tesi si occupa dell’ottimizzazione della strategia di controllo di un veicolo ibrido plug-in ad alte prestazioni al fine di ridurre i consumi e le emissioni, senza penalizzare però le performance e la guidabilità: in particolare si prenderà come riferimento la procedura di omologazione WLTP. Nella prima parte di questa tesi ci si concentrerà dunque sull’ottimizzazione della strategia di controllo di questo veicolo per poi passare all’ottimizzazione di un’altra vettura che presenta un’architettura diversa, per poi confrontare le due e metterne in luce le differenze, i vant

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6

Gómez, Gil Javier. "Development of an altitude simulator and analysis of the performance and emissions of turbocharged Diesel engines at different altitudes." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/101284.

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En el pasado, la investigación de los motores de combustión interna se ha centrado en la reducción del combustible y las emisiones, manteniendo constante el rendimiento. Además, en los últimos años la presión está aumentando aún más para los fabricantes de motores. La nueva homologación es un gran desafío, principalmente debido a la introducción de los ciclos de emisiones de conducción reales (RDE), lo que obligará a homologar los coches en condiciones reales de conducción, más dinámicas y con un amplio rango de condiciones ambientales, donde la altitud ambiente puede llevar a los 1300 metros

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7

CUBITO, CLAUDIO. "A policy-oriented vehicle simulation approach for estimating the CO2 emissions from Hybrid Light Duty Vehicles." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2675285.

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Pollutants emissions and fuel economy tests for passenger cars differ from region to region of the world, since different driving condition and vehicle fleet characterize different geographical areas. In particular, the European type approval procedure for passenger cars uses as reference cycle the New European Driving Cycle (NEDC), which is nowadays not representative of real driving conditions. Therefore, the European Commission has planned to introduce the Worldwide Harmonized Light Duty Test Procedure (WLTP) from September 2017. As a consequence, the CO2 emissions target should be adapted,

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Vignoli, Alessandro. "Test di veicoli con prove di omologazione sul banco a rulli e su pista e analisi dei sistemi RDE." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23541/.

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L'elaborato tratta, inizialmente, le differenze tra i test che si svolgevano nel passato e quelli attuali e il procedimento seguito per lo svolgimento delle prove, prendendo come esempio le modalità di esecuzione di Mercedes-Benz nel laboratorio di Stoccarda su una GLE. In seguito viene analizzata più nel dettaglio l’unità PEMS, che rappresenta una nuova tecnologia in grado di misurare le emissioni inquinanti svolgendo una prova direttamente su strada. Lo studio dei crash test viene svolto mettendo in luce come si quantifica la severità di un incidente; gli incidenti stradali costituiscono

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9

Noralm, Zeerak. "Implementing method for conducting Real Driving Emission (RDE)." Thesis, KTH, Kraft- och värmeteknologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-229083.

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Det här projektet handlar om att utveckla en metod för real driving emission (RDE). RDE är ett komplement till Worldwide Light Duty Test Procedure (WLTP) som kommer att ersätta New European Driving Cycle (NEDC). Dessa cykler och metoder används för att mäta personbilars avgaser. Huvudanledningen till varför NEDC ska bytas ut är för att körcyklerna inte längre är realistiska och reflekterar inte hur en bil presterar egentligen. Detta har lett till att bilar har högre bränsleförbrukning och högre avgasutsläpp när dom körs i trafiken jämfört med resultaten från NEDC.Metoden utvecklades genom hänv

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10

Brescansin, Alexandra Yatsuda Fernandes. "Unidade em Anéis de Wltt." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/55/55135/tde-05032018-161605/.

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Neste trabalho apresentamos um estudo sobre as unidades no anel de Witt dos espaços bilineares sobre um anel local, generalizando os resultados apresentados por Lewis em [7].<br>In this work we give a study about the units in the Witt ring of the bilinear spaces over a local ring, generalizing the results presented by Lewis in [7].

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11

Suarez-Bertoa, Ricardo, Michael Clairotte, Bertold Arlitt, et al. "Intercomparison of ethanol, formaldehyde and acetaldehyde measurements from a flex-fuel vehicle exhaust during the WLTC." Elsevier, 2017. https://publish.fid-move.qucosa.de/id/qucosa%3A73222.

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An intercomparison exercise of the world-harmonized light-duty vehicle test procedure (WLTP) aiming at measuring ethanol, formaldehyde and acetaldehyde emissions from a flex-fuel light-duty vehicle using E85 was conducted in the Vehicle Emission Laboratory (VELA) at the European Commission Joint Research Centre (EC-JRC), Ispra, Italy. The instruments used during the intercomparison allowed online measurements of these compounds directly from the diluted exhaust. Measurements were done either in real time or immediately after the test. The measurement and analysis of exhaust emissions over the

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12

Souria, Charaf-Eddine. "Conception d'interfaces boitiers innovantes pour le radar automobile 77-GHz : Application à la conception optimisée d'une chaine de réception radar en boitier." Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30010/document.

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Le développement des radars automobiles, à la bande de fréquences 76-77 GHz, a connu une croissance importante au cours de la dernière décennie. Les développements en cours doivent faire face à deux grands défis. Le premier défi est la réduction du coût pour équiper plus de catégories de voitures avec ces radars. Le deuxième défi est l'amélioration des performances du radar afin de satisfaire les demandes croissantes des autorités de sécurité routière et d'équiper la voiture autonome. L'émetteur-récepteur radar automobile constitue le cœur du système. Par conséquent, une pression importante es

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13

Moratal, Martínez Ausiás Alberto. "EXPERIMENTAL ANALYSIS OF THERMAL MANAGEMENT INFLUENCE ON PERFORMANCE AND EMISSIONS IN DIESEL ENGINES AT LOW AMBIENT TEMPERATURE." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/111950.

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La regulación mundial de emisiones contaminantes en el sector de la automoción está siendo cada día más estricta. La implantación de nuevos procedimientos está presionando la industria hacia la búsqueda de nuevas tecnologías que cumplan los objetivos de reducción de emisiones contaminantes. En el medio plazo se espera que las pruebas de emisiones a baja temperatura ambiente sean obligatorias en el proceso de homologación. La combustión a bajas temperaturas influye de forma importante en la velocidad de la reacción conllevando un aumento de las emisiones y finalmente al apagado de llama. Bajo e

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14

Nicák, Michal. "Moderní pouzdření a 3D systémy." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217904.

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This project consists of three parts. The first part is aimed to summarize list of actual packaging systems and especially systems using 3D construction. Project continues in the second part, which is more practical and contains design and production of organic and inorganic testing substrates for lead-free soldered 3D structures. Last experimental part is about tests performed on soldered substrates and evaluation of results of these practical tests.

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15

Wong, Guillaume. "Développement de capteurs à ondes élastiques de surface auto-encapsulés aux fréquences intermédiaires pour environnement haute température." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCD040.

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La thèse contribue aux recherches scientifiques et technologiques poursuivies dans le contexte opérationnel des projets collaboratifs ALCASAR et LANCASTER réalisés en partenariat avec les entreprises Rakon, Frec'n'sys, Siltronix, SENSeOR et l'Université Claude Bernard (Lyon 1). L’enjeu d'ALCASAR consiste à réaliser des composants à ondes élastiques de surface (SAW) à base d'AlN épitaxié sur saphir pour deux types d'applications : d'une part des résonateurs à produit Q.f maximal pour des sources de fréquence à bruit de phase minimum, d'autre part des capteurs passifs interrogés à distance pour

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16

Pelli, Cresi Federico. "Sperimentazione di un EGR HP Mixer e di un Oil Cooler con Bypass in un motore V6 Diesel con l’obiettivo di ridurre la CO2." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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Lo scopo di questa tesi è stato sperimentare componenti prototipali su un motore V6 Diesel all’interno di un banco dinamico con il fine di valutarne la riduzione di CO2 in cicli di omologazione NEDC e WLTC. In particolare si sono studiati un nuovo EGR HP Mixer e un Oil Cooler dotato di Bypass: il primo componente per migliorare l’EGR distribution da cilindro a cilindro, mentre il secondo componente per ottenere un’ottimizzazione energetica della pompa dell’olio sfruttando il nuovo bypass del cooler. L’Oil Cooler è dotato di due cartucce intercambiabili che cambiano le fasi di bypass a seconda

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17

Hofmann, Lutz. "3D-Wafer Level Packaging approaches for MEMS by using Cu-based High Aspect Ratio Through Silicon Vias." Doctoral thesis, Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-231412.

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For mobile electronics such as Smartphones, Smartcards or wearable devices there is a trend towards an increasing functionality as well as miniaturisation. In this development Micro Electro- Mechanical Systems (MEMS) are an important key element for the realisation of functions such as motion detection. The specifications given by such devices together with the limited available space demand advanced packaging technologies. The 3D-Wafer Level Packaging (3D-WLP) enables one solution for a miniaturised MEMS package by using techniques such as Wafer Level Bonding (WLB) and Through Silicon Vias (T

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18

Battistini, Lorenzo. "Impact of future EU7 regulations on high performance gasoline-ICEs and possible innovative technologies for extension of lambda 1 operating range." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amslaurea.unibo.it/25674/.

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The aim of pollutant emissions legislation is to bring environmental benefit by helping reduce, for what road transport is responsible, the concentration of pollutants where levels are too high and endanger human health. Europe is considering several changes in “post Euro 6d” regulation from 2025. Several measures have been proposed for Euro 7, most of which introduce new challenges in the development of high-performance turbocharged gasoline engine such as the extension of lambda 1 in the whole engine map. In this Master Thesis, possible technologies to expand the engine operating range wit

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19

Auñón, García Ángel. "Development and validation of a virtual engine model for simulating standard testing cycles." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/168906.

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[ES] Las nuevas regulaciones en materia de emisiones de efecto invernadero y calidad del aire han conducido la evolución tecnológica de los motores de combustión interna durante los últimos años. Las mejoras en el proceso de la combustión, la sobrealimentación, la gestión térmica, los sistemas de post tratamiento y técnicas como la recirculación de gases de escape, han permitido que los motores de combustión interna de hoy en día sean cada vez más limpios. La adopción en Europa del nuevo ciclo de homologación WLTP, que considera un ciclo de conducción más realista que su predecesor el NEDC, as

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20

Pospíšil, Juraj. "Architektura chlazeného EGR systému pro benzínové motory." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400446.

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Táto diplomová práca je zameraná na preukazovanie vplyvov rôznych architektúr spätnej recirkulácie spalín na preplňované benzínové motory. Simulácie boli vytvorené v termodynamickom simulačnom programme GT-Power. Práca začína porovnávaním vplyvov spätnej recirkulácie na ustálené stavy motora, najmä z hľadiska spotreby, ktoré sú následne implementované do tranzientných modelov, simulujúc emisné testovacie cykly. Na konci práce sa venujem vplyvom spätnej recirkulácie na funkciu oxidačno-redukčného katalyzátora a na funkciu turbodúchadla.

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Gomes, Hugo Rafael da Assunção. "Modeling and Experimental Testing of an Electric Vehicle Battery in the WLTP Driving Cycle." Master's thesis, 2019. http://hdl.handle.net/10316/93563.

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Dissertação de Mestrado Integrado em Engenharia Mecânica apresentada à Faculdade de Ciências e Tecnologia<br>O objetivo principal do trabalho apresentado nesta tese é o desenvolvimento de um modelo para a simulação do desempenho de baterias de veículos elétricos, em ciclos de condução ou condições de condução específicas. A intenção é medir o fluxo de corrente que atravessa cada célula que compõe a bateria, durante o ciclo de condução, e usar esses dados para medir a geração de calor, ou aumento de temperatura, através de métodos experimentais.Para testar experimentalmente o modelo desenvolvid

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Bastos, Daniela Filipa da Silva. "Análise sobre a influência da utilização de aditivos em combustíveis." Master's thesis, 2019. http://hdl.handle.net/10400.8/4178.

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Nos últimos anos, o panorama da mobilidade rodoviária tem sofrido alterações constantes e profundas, motivadas em grande parte pela preocupação ambiental e energética, pelo que, em consequência, têm ocorrido significativos desenvolvimentos de soluções tecnológicas inovadoras nos veículos automóveis. É factual que os limites de emissões de poluentes estão cada vez mais apertados, o que motiva alterações nos motores de combustão interna dos veículos (sistemas de injeção de combustível mais eficientes e novos sistemas de tratamento de gases de escape). Um dos aspetos que tem evoluído de modo evi

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23

Lin, Chia-Chia, and 林佳加. "Tunable Filter with T-coil Design on InFO-WLP." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/3hrrqh.

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碩士<br>國立臺灣大學<br>電信工程學研究所<br>105<br>This thesis propose a tunable filter with T-coil circuit design whose tuning range is from 5GHz to 2.5GHz on InFO-WLP (Integrated Fan-Out Wafer-Level-Packaging). There are three sets of varactors to get wider tuning range so that the center frequency and external quality factor and bandwidth can be suitably tuned. A systematic design procedure has been set up and demonstrate the tunable filters of 3.48 dB in a compact size of 2.55mm×1.42mm. Due to the limited range of varactor value, simulated results show a tuning range of 20% from 5GHz to 4GHz, with inserti

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Yang, Chung-Yi, and 楊忠益. "An Efficient WLP-FDTD Scheme with Unconditional Stability for Thin Structures." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/66130523604931443603.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>99<br>When we want to solve electromagnetic problems, the Finite Difference Time Domain (FDTD) method is a very useful numerical simulation technique to solve these problems. However, the traditional FDTD method is an explicit finite-difference scheme, so the method is limited by the Courant-Friedrich-Levy (CFL) stability condition. In other words, the minimum cell size will limit the maximum time-step size in a computational domain. Therefore, while simulating structures of fine scale dimensions, it will relatively result in a prohibitively high computation time g

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Fan, Jerry, and 范志文. "Design and Development of a Wafer Level Package (WLP) Bonding System." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/py4c86.

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碩士<br>國立虎尾科技大學<br>光電與材料科技研究所<br>95<br>With the evolution of the semiconductor fabrication technology, there have been several basic shifts in electronic packaging over the last few decades. The surface-mount technology and ball-grid-array packages were two important steps for high-throughput assembly of a wide variety of integrated circuits (ICs), while reducing the pad pitch on the printed circuit board. Recently, the wafer-level packaging (WLP) uses the technology of IC packaging at a wafer level, instead of the traditional assembly process of each individual unit after wafer dicing. The waf

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蘇明淦. "An Analysis of Taiwan HR Practitioners on Workplace Learning and Performance (WLP) Competencies and Roles." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/34925568698460563853.

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碩士<br>明志技術學院<br>工程管理研究所<br>92<br>The goal of this study was to identify how the Taiwan Workplace Learning and Performance (WLP) practitioners perceived important of WLP competencies at the present time, as well as its importance over the next five years. The purpose of this study included: (1) to analyze the perception of current expertise, current importance, and future importance of WLP competencies in Taiwan; (2) to identify the differences in perceived importance of competencies in terms of different disciplines of Taiwan WLP practitioners, and (3) to identify the competencies most needed

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Huang, Shih-Hsiung, and 黃勢雄. "Professional Competencies of HR Graduate Students in Taiwan: an Application of the ASTD WLP Competency Model." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/78124638231699815578.

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碩士<br>南台科技大學<br>休閒事業管理系<br>97<br>This study investigated the perceived competency level of Human Resource (HR) graduate students in Taiwan in five selected Areas of Expertise (AOE) from the 2004 American Society for Training & Development (ASTD) Competency Study: Mapping the Future. These areas were selected because they have the highest weighting in the ASTD Certified Professional in Learning and Performance (CPLP) exam, and therefore can be considered as the most critical for success as a Human Resource Development (HRD) practitioner. The findings indicated that the perceived current level

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Smith, Terri Freeman. "Exemplary performance in four areas of expertise in workplace learning and performance (WLP) a critical incident analysis /." 2006. http://www.etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-1241/index.html.

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Patil, Chaitanya Yashvant. "Effects of EGR transient operation on emissions and performance of automotive engines during RDE cycles." Doctoral thesis, 2020. http://hdl.handle.net/10251/149498.

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[ES] Hoy en día, las regulaciones sobre emisiones de los automóviles se están haciendo más estrictas. Además de los ciclos de homologación estándar, actualmente se están empezando a considerar nuevos métodos de homologación que tienen en cuenta las condiciones reales que se dan en la carretera. Los sistemas de Recirculación de Gases de Escape (EGR) son estrategias que han demostrado ser efectivas durante estacionarios y que también pueden ser usadas en ese tipo de ciclos dinámicos que corresponden a condiciones reales de conducción. Esta tesis se centra en la implementación de diferentes sist

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Futlik, Alisa. "Erweiterung des 'generalized' p-Median-Problems." Master's thesis, 2018. https://tud.qucosa.de/id/qucosa%3A31905.

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Die vorliegende Masterarbeit beschäftigt sich mit den MINISUM-Modellen auf einem Graphen. Die Eigenschaften des „generalized“ p-Median-Problem werden neben den Eigenschaften des ordinären p-Median-Problems untersucht. Dabei kommt folgende Diskrepanz zum Vorschein: Obwohl das „generalized“ p-Median-Problem eine unendliche Anzahl an potenziellen Lösungsmöglichkeiten besitzt und der optimale Standort bei einer derartigen Problemstellung sowohl im Knoten als auch auf der Kante des Graphen liegen kann, wird der Median oft ausschließlich in den Knoten des Graphen gesucht. Dadurch entsteht das Risiko

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Hofmann, Lutz. "3D-Wafer Level Packaging approaches for MEMS by using Cu-based High Aspect Ratio Through Silicon Vias." Doctoral thesis, 2016. https://monarch.qucosa.de/id/qucosa%3A20832.

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For mobile electronics such as Smartphones, Smartcards or wearable devices there is a trend towards an increasing functionality as well as miniaturisation. In this development Micro Electro- Mechanical Systems (MEMS) are an important key element for the realisation of functions such as motion detection. The specifications given by such devices together with the limited available space demand advanced packaging technologies. The 3D-Wafer Level Packaging (3D-WLP) enables one solution for a miniaturised MEMS package by using techniques such as Wafer Level Bonding (WLB) and Through Silicon Vias (T

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