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Dissertation
E-commerce deliveries: impact of cut-off times over lead time to consumer
Authors: --- --- ---
Year: 2019 Publisher: Liège Université de Liège (ULiège)

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Abstract

Over the last decade, the growth of e-commerce has continued to increase and this phenomenon is not about to stop. Today, providing an exceptional online shopping experience requires improving the entire process (i.e. pre-purchase, purchase and post-purchase). In addition, delivery times seem to be a key factor in satisfying customers who are becoming more and more demanding.
Faced with this situation, PFS realized that collaborating with the UPS carrier could reduce delivery times to France and Spain by sending a truck earlier in the day to the UPS distribution centre in Paris. This project-thesis focuses on this new service and in particular for Asics and Clarins clients. The objective is to assess the impacts of a new promise allowing any customer who places an order before noon to benefit from shorter delivery times.
First, a review of the scientific literature and other sources of information is carried out in order to understand trends in e-commerce, customers' requirements in terms of delivery times and the improvement of some order fulfilment processes. It appears that fast delivery times increase customers’ satisfaction and loyalty.
Then, analyses are performed on the impacts that this new promise has on warehouse operations but also on truck loading capacity. This is achieved through the development of a specific methodology to simulate scenarios associated to peak and off-peak periods.
Finally, recommendations are proposed. In general, flexibility is needed in terms of the type(s) of truck(s) to be used. Regarding operations in the warehouse, all orders can be processed with some changes in the start time of outbound operations and the number of workers required. Nevertheless, for a better management of this new service, specific daily forecasts on the number of orders to be shipped should be established. Durant la dernière décennie, la croissance de l’e-commerce n’a cessé d’augmenter et ce phénomène n’est pas près de s’arrêter. Aujourd’hui, fournir une expérience d’achat en ligne exceptionnelle passe par l’amélioration de l’ensemble du processus (c.-à-d. pré-achat, achat et post-achat). De plus, les délais de livraison semblent être un facteur clé de satisfaction chez les consommateurs devenus de plus en plus exigeants. Face à ce constat, PFS s’est rendu compte qu’une collaboration avec le transporteur UPS pouvait permettre de bénéficier d’une diminution des délais de livraison sur la France et l’Espagne en faisant partir un camion plus tôt dans la journée à destination du centre de distribution UPS à Paris. Ce mémoire-projet se concentre sur ce nouveau service et en particulier pour les clients Asics et Clarins. L’objectif est d’évaluer les impacts d’une nouvelle promesse permettant à tout consommateur qui place une commande avant midi de bénéficier de délais de livraison plus courts.
Tout d’abord, une revue de la littérature scientifique ainsi que d’autres sources d’informations ont permis de comprendre les tendances dans l’e-commerce, les exigences des consommateurs en termes de délais de livraison et l’amélioration de certains processus d’exécution des commandes. Il ressort que les délais de livraison rapides et à moindres coûts permettraient d’augmenter la satisfaction des consommateurs.
Ensuite, des analyses sont effectuées sur l’impact que peut avoir cette nouvelle promesse au point de vue des opérations dans l’entrepôt mais également sur la capacité de chargement des camions. Ceci est rendu possible grâce à l’élaboration d’une méthodologie permettant de simuler des scénarios associés à des périodes spécifiques.
Finalement, des recommandations sont proposées. De manière générale, une flexibilité quant aux types de camions à utiliser est nécessaire. En ce qui concerne les opérations, le traitement de toutes les commandes est possible moyennant quelques changements au niveau des heures de début des opérations ainsi que sur le nombre de travailleurs requis. Néanmoins, pour une meilleure gestion de ce nouveau service, des prévisions journalières spécifiques sur le nombre de commandes à expédier doivent être réalisées.


Book
Clean Energy and Fuel (Hydrogen) Storage
Authors: ---
ISBN: 3039216317 3039216309 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Clean energy and fuel storage are often required for both stationary and automotive applications. Some of these clean energy and fuel storage technologies currently under extensive research and development include hydrogen storage, direct electric storage, mechanical energy storage, solar–thermal energy storage, electrochemical (batteries and supercapacitors), and thermochemical storage. The gravimetric and volumetric storage capacity, energy storage density, power output, operating temperature and pressure, cycle life, recyclability, and cost of clean energy or fuel storage are some of the factors that govern efficient energy and fuel storage technologies for potential deployment in energy harvesting (solar and wind farms) stations and onboard vehicular transportation. This Special Issue thus serves the need for promoting exploratory research and development on clean energy and fuel storage technologies while addressing their challenges to practical and sustainable infrastructures.

Keywords

MgH2 --- vertically oriented graphene --- gas loss --- concentrated solar power (CSP) --- complex hydrides --- PCM roof --- hydrogen storage systems --- slag --- bubbles transportation --- dye-sensitized solar cells --- undercooling --- methanogenesis --- electrochemical energy storage --- hydrogen storage --- Fischer–Tropsch --- state of charge estimator --- gas turbine engine --- simplified electrochemical model --- hot summer and cold winter area --- rock permeability --- flutter instability --- charge density --- binder --- salt cavern energy storage --- battery energy storage system --- capacitance --- LiNH2 --- ball milling --- production rate --- leaching tubing --- quality function deployment (QFD) --- nanocatalyst --- lab-scale --- thermal energy storage (TES) --- comprehensive incremental benefit --- lean direct injection --- Li-ion batteries --- separator --- four-point --- salt cavern --- low emissions combustion --- ionic liquid --- carbon materials --- nanocomposite materials --- electrical double layers --- recovery factor --- thermochemical energy storage --- Klinkenberg method --- flow-induced vibration --- cathode --- porous media --- metal hydride --- aquifer size --- diffusion --- auxiliary services compensation --- water invasion --- conjugate phase change heat transfer --- heat transfer enhancement --- failure mode and effect analysis (FMEA) --- magnetism --- carbonate gas reservoirs --- equivalent loss of cycle life --- internal and reverse external axial flows --- thermal energy storage --- lithium-ion batteries --- bacterial sulfate reduction --- crystal growth rates --- optimal capacity --- gas storage --- energy discharge --- anode --- Ag nanoparticles --- regenerator --- hydrogen absorption --- freestanding TiO2 nanotube arrays --- material science --- extended kalman filter --- reactive transport modeling --- synthetic rock salt testing --- hydrogen energy storage --- lattice Boltzmann method --- dynamic modeling --- bubbles burst --- Power to Liquid --- large-scale wind farm --- PHREEQC

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