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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
101

Distribuovaná syntaktická analýza / Distributed Parsing

Lipowski, Jan Unknown Date (has links)
The thesis presents a method of the delimiter based syntax analysis. There is introduced a definition, an algoritm of the computation and analysis of the delimiters in the thesis. Farther the thesis presents an algorithm creating a distributed parser based on the input grammar with the analysed delimiter symbols. Then there is introduced an implementation of the distributed parser created by the introduced method.
102

Stochastic and Discrete Green Supply Chain Delivery Models

Brown, Jay R. 24 April 2013 (has links)
No description available.
103

Last Mile Delivery - Examination of Customer Satisfaction regarding Parcel Lockers

Brunner, Valerie, Majcher, Wanda January 2022 (has links)
Background: The strong growth of e-commerce and the connected last mile delivery problems as well as the increasing customer demands have driven forward delivery innovations in the past years. One of them, parcel locker networks, were developed and have been growing for several years. However, customers still seem to prefer the traditional home delivery, which is highly inefficient for last mile delivery actors. Thereby, it has to be evaluated whether customers are satisfied with the parcel locker technology and which factors determine the satisfaction.  Purpose: This study aims at evaluating the factors influencing customer satisfaction in regard to parcel lockers. Therefore, relevant constructs about satisfaction and acceptance models in the last mile context were derived from the literature. Method: In order to accomplish our purpose, a quantitative study was conducted using a questionnaire among end customers in Austria and Germany. The proposed framework and hypotheses were analysed by using structural equation modelling. Furthermore, a multigroup analysis was conducted to identify differences between sociodemographic categories.  Conclusion: The results show that perceived ease of use, perceived quality and convenience perception all have an influence on customer satisfaction in Germany and Austria. However, the direct influence of perceived ease of use and convenience perception cannot be confirmed, both constructs are entirely mediated by perceived quality. Furthermore, the multigroup analysis determined significant differences in the gender category for the path between perceived ease of use and convenience perception, in the living area category for the relationship between convenience perception and perceived quality and in the age category for perceived quality and customer satisfaction.
104

Fabrication and characterization of gate last Si MOSFETs with SiGe source and drain

Christensen, Björn January 2017 (has links)
The continuous evolution of digital technology we enjoy today is the result of ever shrinking, faster and cheaper transistors that make up the ubiquitous integrated circuits of our devices. Over the decades, the industry has gone from purely geometrical scaling to innovative solutions like high-k dielectrics combined with metal gates and FinFETs. A possible future is the use of high mobility materials such as Germanium for the active areas of a transistor instead of Silicon. As a step towards building devices on Ge, we characterize a gate last process with epitaxial deposition of Si0.75Ge0.25 source and drain areas on bulk Si wafers. Devices fabricated are proof-of-concept PMOSFETs and NMOSFETs with channel widths of 10 µm and 40 µm and channel lengths between 0.6 µm and 50 µm. The gate electrode of the fabricated devices is insitu doped polycrystalline Silicon. The devices are electrically characterized through I-V measurements and exhibit a yield of 95%. / Den konstanta utvecklingen av digital teknik som vi åtnjuter idag drivs av den ständiga utvecklingen av transistorer. Dessa blir mer kompakta, snabbare och kostar mindre för varje generation och bygger upp de integrerade kretsar som driver all vår vardagsteknik. Under ett tidsspann på flera decennier har krympningen gått från enbart geometrisk skalning till mer innovativa lösningar. Gate-oxiden har gått från rent kiseldioxid till material med lägre relativ permittivitet vilket möjliggjort en tunnare ekvivalent elektrisk tjocklek än vad som varit möjligt för kiseloxid. FinFet eller så kallade ’tri-gate’ transistorer har ersatt den plana varianten för att öka den ledande arean utan att enheterna sväller ut över substratet. En framtida möjlighet är även att använda material med högre mobilitet för elektroner och hål än kisel där en möjlig kandidat är Germanium. Som ett steg mot målet at bygga Germanium-transistorer tillverkar vi här gate last transistorer med source och drain i in-situ dopad kisel-germanium. Dessa konceptenheter används för att definiera och utveckla tillverkningsprocessen och tillverkas i flera omgångar. Varje skiva innehåller transistorer med en bredd på 40 µm och 10 µm. Kanallängden på transistorerna går mellan 0.6 µm och 50 µm för båda bredderna och av varje enhet finns 101 stycken per kiselskiva (100 mm diameter). Gate-elektroden består i samtliga fall av in-situ dopat poly-kristallint kisel. Enheterna karaktäriseras därefter genom elektriska mätningar och mätdata analyseras och sammanställs. Det visas genom dessa mätningar att ett utfall om över 95% fungerande enheter kan uppnås med processen.
105

Blueprint and Beyond : Integrating BIM and LPS within Lean Construction on Production Process / Blåkopia och Bortom : Integrera BIM och LPS inom Lean Construction på Produktionsprocessen

Oyeniyi, Tosin Samuel January 2023 (has links)
The construction industry faces numerous challenges, such as schedule delays, cost overruns, and rework, which can impact project success and profitability. The key motivation for this report is to explore and understand the potential benefits and implications of integrating Building Information Modeling (BIM) functionalities with the Last Planner System (LPS). This report consists of a systematic literature review (SLR) addressing the influence that the interaction of the LPS and BIM has in the production process. Firstly, bibliometric analysis was done on the results of the SLR, and the content of the literature papers was analyzed adopting the aspects oflean construction in combination with qualitative content analysis to identify the BIM functionalities, the relevant lean construction aspects, and the influence the interaction has on the relevant lean construction aspects. Based on the contents of the literature papers, certain BIM functionalities such as model and schedule visualization, quantity take-off, and clash detection interact with the LPS. The aspects of lean construction that are influenced by the interaction include waste minimization, continuous improvement, improved collaboration, and workflow visualization. Researchers show that the interaction of LPS and certain BIM functionalities has reduced delays, cost overruns, project collaboration, remote meetings, and better project understanding and planning reliability.The findings of the report provide insights for construction industry professionals to enhance project planning, coordination, and execution. The report shows that current attempts for a complete interaction are yet to be researched, with parallel applications and inadequacy in BIM functionalities. A sound conceptual model for interaction is yet to be researched. Many researchers and construction actors may use this report to find existing content on this topic and find the motivation to interact with the BIM functionalities and LPS in a proposed or existing production process. / Byggindustrin står inför många utmaningar, såsom tidsplaneförskjutningar, kostnadsöverskridelser och omarbetning, vilket kan påverka projektets framgång och lönsamhet. Den huvudsakliga motivationen för denna rapport är att utforska och förstå de potentiella fördelarna och konsekvenserna av att integrera Byggnadsinformationsmodellering (BIM) med Last Planner System (LPS). Denna rapport består av en systematisk litteraturöversikt (SLR) som tar upp hur interaktionen mellan LPS och BIM påverkar produktionsprocessen. Först gjordes en bibliometrisk analys av SLR-resultaten, och innehållet i litteraturartiklarna analyserades med utgångspunkt i aspekter av lean construction kombinerat med kvalitativ innehållsanalys för att identifiera BIM-funktionaliteter, de relevanta lean construction-aspekterna och vilken inverkan interaktionen har på de relevanta lean construction-aspekterna. Baserat på innehållet i litteraturartiklarna interagerar vissa BIM-funktionaliteter, såsom modelloch tidsplanvisualisering, kvantitetsupptagning och kollisionskontroll, med LPS. De aspekter av lean construction som påverkas av interaktionen inkluderar minimering av slöseri, kontinuerlig förbättring, förbättrad samarbete och visualisering av arbetsflöde. Forskare visar att interaktionen mellan LPS och vissa BIM-funktionaliteter har minskat förseningar, kostnadsöverskridelser, projekt-samarbete, fjärrmöten och bättre projekt-förståelse och planeringspålitlighet. Rapportens resultat ger insikter för yrkesverksamma inom byggindustrin för att förbättra projektplanering, samordning och genomförande. Rapporten visar att nuvarande försök till en fullständig interaktion ännu inte har forskats kring, med parallella tillämpningar och brister i BIM-funktionaliteter. En robust konceptuell modell för interaktion måste fortfarande utforskas. Många forskare och aktörer inom byggindustrin kan använda denna rapport för att hitta befintligt innehåll om detta ämne och hitta motivationen att interagera med BIM-funktionaliteter och LPS i en föreslagen eller befintlig produktionsprocess.
106

[pt] AVALIAÇÃO DO NÍVEL DE SERVIÇO LOGÍSTICO DA ENTREGA DE LAST MILE DE UMA EMPRESA DE E-COMMERCE ATRAVÉS DO NET PROMOTER SCORE: ESTUDO DE CASO / [en] EVALUATION OF THE LOGISTICS SERVICE LEVEL OF THE LAST MILE DELIVERY OF AN E-COMMERCE COMPANY THROUGH THE NET PROMOTER SCORE: CASE STUDY

RHAFAEL POLICARPO SANCHES 17 November 2023 (has links)
[pt] O termo e-commerce designa o modelo de negócio no qual as transações comerciais de compra e venda são feitas através de meios digitais. Essa variedade de comércio on-line tem aumentado significativamente no Brasil. Dados recentes revelam um crescimento de 267% no setor, cujo número de usuários do comércio eletrônico passou de 31,3 milhões em 2013 para 83,7 milhões em 2022. Quando se compara ao número de encomendas, o aumento foi de 88 milhões no ano de 2013 para 368 milhões em 2022. Esse crescimento trouxe inúmeros desafios logísticos, especialmente para alcançar a satisfação do cliente do e-commerce e sua fidelização. Com isso, a qualidade do serviço logístico no processo de distribuição de produtos no last mile ganhou relevância no processo de distribuição Business to Consumer (B2C). Corresponder a uma expectativa de compra satisfatória é um fator crítico para as empresas do e-commerce que buscam obter vantagem competitiva. Com esse propósito, a melhoria logística de distribuição desempenha um papel preponderante; entretanto, é necessário definir exatamente o que o cliente valoriza e espera desse tipo de serviço, dado que as expectativas do mercado são elevadas e boa parte das empresas não estão em condições de atender a esse padrão. Nesse contexto, este estudo de caso tem por objetivo geral identificar as expectativas de last mile delivery dos clientes de uma empresa brasileira do e-commerce B2C ao realizar uma compra, no segmento de móveis e decoração, em uma empresa que atua em todo o território nacional. A metodologia utilizada foi o estudo de caso único, os clientes responderam um survey que foi utilizado como base de dado para o desenvolvimento do trabalho e melhoria da operação, com abordagem qualitativa e empregou o método Net Promoter Score (NPS). Participaram desse estudo os clientes da empresa estudada e citada no trabalho. Quinze dias após o recebimento da mercadoria, era enviado para o cliente um questionário on-line com duas perguntas, as respostas eram analisadas sobre a expectativa relacionada ao serviço logístico, ao nível de lealdade, à satisfação e à fidelização de compras. Os resultados obtidos nesse trabalho apontam cinco fatores críticos para satisfazer a necessidade do cliente. A expectativa mais relevante para os consumidores em relação à distribuição de produtos por meio do e-commerce B2C é ter um prazo menor ofertado pela empresa relacionado a entrega, seguido de não receber produto danificado, receber produto com material de melhor qualidade, melhor atendimento e entrega dentro do prazo. Conclui-se que existe uma expectativa do consumidor intimamente associada a uma oportunidade de melhoria na logística de distribuição no e-commerce. Isso significa que a qualidade do serviço de entrega logística tem o impacto direto sobre uma experiência satisfatória para os clientes do e-commerce. O presente trabalho oferece um framework como ferramenta para a aplicação do método NPS e, consecutivamente, para a melhoria do nível de serviço e da excelência operacional nas atividades logísticas. Dessa forma, contribuir para retenção, fidelização e satisfação da experiência de compra dos clientes. / [en] The term e-commerce refers to the business model in which commercial transactions of buying and selling are conducted through digital means. This variety of online commerce has significantly increased in Brazil. Recent data reveals a growth of 267% in the sector, with the number of e-commerce users increasing from 31.3 million in 2013 to 83.7 million in 2022. When comparing the number of orders, it increased from 88 million in 2013 to 368 million in 2022. This growth has brought numerous logistical challenges, especially in achieving customer satisfaction and loyalty in e-commerce. Therefore, the quality of logistics services in the last mile distribution process has gained relevance in the Business to Consumer (B2C) distribution process. Meeting satisfactory purchase expectations is a critical factor for e-commerce companies seeking a competitive advantage. With this purpose, logistic distribution improvement plays a significant role; however, it is necessary to precisely define what the customer values and expects from this type of service, as market expectations are high, and many companies are unable to meet this standard. In this context, this case study aims to contribute to a better understanding of the last mile delivery expectations of customers of a Brazilian B2C e-commerce company when making a purchase in the furniture and decoration segment, operating nationwide. The methodology used was a single case study, customers completed a survey that was used as a database for developing the work and improving the operation, with a qualitative approach and using the Net Promoter Score (NPS) method. The clients of the company studied and mentioned in the work participated in this study. Fifteen days after receiving the merchandise, an online questionnaire with two questions was sent to the customer, the answers were analyzed regarding expectations related to the logistics service, the level of loyalty, satisfaction and purchase loyalty. The results obtained in this study point to five critical factors for meeting customer needs. The most relevant expectation for consumers regarding the distribution of products through B2C e-commerce is to have a shorter delivery time offered by the company, followed by damaged products, products with better quality materials, better customer service, and on-time delivery. It is concluded that there is a customer expectation closely linked to an opportunity for improvement in e-commerce distribution logistics. This means that the quality of the logistic delivery service directly impacts a satisfactory experience for e-commerce customers. This study suggests the application of the Framework as a tool for implementing NPS and, consequently, for improving the level of service and operational excellence in logistics activities. This can contribute to customer retention, loyalty, and satisfaction in the shopping experience.
107

Drönarleveranser i Sverige, framtidens lösning på den växande e-handeln? : En kvalitativ studie om konsumenternas krav på och inställning till drönarleveranser i Sverige samt hur distributionsföretag belyser detta

Jeryos, Jimmy, Mourad, Charbel January 2022 (has links)
Framväxten av e-handel har ställt höga krav på last mile-leverans, där leverans av paket till konsumenter har blivit allt viktigare och en väsentlig del av kundens köpupplevelse. I takt med att kraven på e-handel och frakt ökar, så ökar också konsumenternas krav på servicekvalitet och leveranstid. I takt med att e-handeln fortsätter att växa behövs nya lösningar som kan leverera snabbt, effektivt och hållbart till lägre kostnader. Något som diskuterats på flera ställen är autonoma leveransfordon. Ett exempel på detta är drönare, som inte har testats i så stor utsträckning. Syftet med studien är att identifiera de krav som konsumenter ställer på drönarleveranser av paket i Sverige i en tid av ökad e-handel. Således för att bidra med kunskap kring hur skräddarsydda paketleveranser av drönare kan leda till ökad kundnöjdhet. För insamling av empirin tillämpas kvalitativ metod som genomfördes genom semistrukturerade intervjuer med sju konsumenter för att få en inblick i konsumentens krav. Sedan har intervju med en kvalitets- och miljöchef från DHL gjorts för en inblick i hur distributionsföretag belyser dessa krav. Studiens resultat visade att konsumenterna har en nyfiken men skeptisk inställning mot leveransdrönare och att de i allt högre utsträckning förväntar sig en mer kundanpassad leverans. Andra krav som konsumenter ställer är snabba leveranser och stark förpackning. Samtidigt vill konsumenter undvika fysisk kontakt med drönare och väljer att få paket levererat till anvisad plats. Däremot finns inget större behov att betala mer för en drönarleverans trots de högre kraven på last mile leveranserna. / The rising e-commerce has placed great demands on last mile deliveries where deliveries to consumers have become increasingly important and are an important part of the shopping experience for the customer. Consumers' demands for service quality and delivery time have risen in connection with the increased e-commerce and demand for transport. In step with the ever-increasing e-commerce, new solutions are required to be able to deliver quickly, efficiently, sustainably and at a lower cost. Something that has been discussed in several places is autonomous delivery vehicles. An example of this is drones, which have not been tested to such an extent. The purpose of the study is to identify the demands that consumers place on delivery drones of parcels in Sweden in a time of increased e-commerce. Thus to contribute with knowledge about how customized deliveries by drones can lead to increased customer satisfaction. For collecting the empirical data, a qualitative method was applied that was conducted through semi-structured interviews with seven consumers to get an insight into the consumers requirements. Furthermore an interview was conducted with a quality- and environmental manager from DHL for an insight into how these requirements are highlighted. The results of the study showed that consumers have a curious but skeptical attitude towards delivery drones and that they expect a more customized delivery. Other requirements that consumers set are fast deliveries and strong packaging. At the same time, consumers want to avoid physical contact with drones and choose to have packages delivered to a specific location. However, there is no greater demand to pay more for a drone delivery despite the higher requirements for last-mile deliveries.
108

Can the Act of Destroying Nature be Evil in Itself? : A Virtue Ethical Approach to the Last Man Thought Experiment / Kan själva handlingen att förstöra natur vara ondskefull? : En dygdeetisk infallsvinkel till "Sista Mannen" tankeexperiment

Kjellsson, Love January 2016 (has links)
No description available.
109

Asian monsoon over mainland Southeast Asia in the past 25 000 years

Chabangborn, Akkaneewut January 2014 (has links)
The objective of this research is to interpret high-resolution palaeo-proxy data sets to understand the Asian summer monsoon variability in the past. This was done by synthesizing published palaeo-records from the Asian monsoon region, model simulation comparisons, and analysing new lake sedimentary records from northeast Thailand. Palaeo-records and climate modeling indicate a strengthened summer monsoon over Mainland Southeast Asia during the Last Glacial Maximum (LGM), compared to dry conditions in other parts of the Asian monsoon region. This can be explained by the LGM sea level low stand, which exposed Sundaland and created a large land-sea thermal contrast. Sea level rise ~19 600 years before present (BP), reorganized the atmospheric circulation in the Pacific Ocean and weakened the summer monsoon between 20 000 and 19 000 years BP. Both the Mainland Southeast Asia and the East Asian monsoon hydroclimatic records point to an earlier Holocene onset of strengthened summer monsoon, compared to the Indian Ocean monsoon. The asynchronous evolution of the summer monsoon and a time lag of 1500 years between the East Asian and the Indian Ocean monsoon can be explained by the palaeogeography of Mainland Southeast Asia, which acted as a land bridge for the movement of the Intertropical Convergence Zone. The palaeo-proxy records from Lake Kumphawapi compare well to the other data sets and suggest a strengthened summer monsoon between 10 000 and 7000 years BP and a weakening of the summer monsoon thereafter. The data from Lake Pa Kho provides a picture of summer monsoon variability over 2000 years. A strengthened summer monsoon prevailed between BC 170-AD 370, AD 800-960 and since AD 1450, and was weaker about AD 370-800 and AD 1300-1450. The movement of the mean position of the Intertropical Convergence Zone explains shifts in summer monsoon intensity, but weakening of the summer monsoon between 960 and 1450 AD could be affected by changes in the Walker circulation. / <p>At the time of the doctoral defense, the following paper was unpublished and had a status as follows: Paper 4: Manuscript..</p>
110

Southern African Climate Dynamics and Archaeology during the Last Glacial Maximum

Phillips, Anna 09 December 2013 (has links)
There is little consensus on what forced the climate of southern Africa to change during the Last Glacial Maximum (LGM). Because of southern Africa's latitudinal position, changes in seasonal precipitation can help resolve the influence of internal climate factors such as groundwater and external climate forcers such as large scale atmospheric circulation patterns. This paper presents a simple model of groundwater discharge based on permeability and topography in comparison with general circulation model precipitation results and paleoenvironmental proxy records. Results show that during the LGM the Intertropical Convergence Zone (ITCZ) likely weakened and moved slightly further south while the westerlies likely expanded slightly northward, with no significant change in strength. The climate and groundwater results were compared to the distribution of LGM and pre-LGM archaeological sites. Results show that the Later Stone Age peoples of southern Africa were likely inhabiting a relatively wet environment rather than an arid one.

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