Essays about: "copper price"

Showing result 1 - 5 of 19 essays containing the words copper price.

  1. 1. Forecasting copper price using VAR and the XGBoost model: an experiment with a relatively small dataset

    University essay from Lunds universitet/Nationalekonomiska institutionen; Lunds universitet/Statistiska institutionen

    Author : Juanli Hu; [2023]
    Keywords : copper price; Vector autoregressive model; XGBoost; Time series; Business and Economics;

    Abstract : Given the importance of copper prices to investors, governments, and policymakers, this paper investigates short-term price predictability using VAR and XGBoost models. All models are trained with historical data from November 2021 to December 2022 and using MSE, RMSE and MAE for evaluating the model performance. READ MORE

  3. 2. The determinants of secondary copper production : An econometric analysis of European countries

    University essay from Luleå tekniska universitet/Institutionen för ekonomi, teknik, konst och samhälle

    Author : Matilda Öhman; Sanna Persson; [2023]
    Keywords : Copper; Secondary copper; Recycling; Secondary metals; Circular economy;

    Abstract : Copper is a metal that is commonly found in our society's infrastructure, such as cables and wires. In addressing the climate threat, society is facing a major transition towards electrification and digitization, and here copper plays an essential role. READ MORE

  4. 3. Implications of different sensor resolutions and contrast settings in a roll-to-roll process, considering the speed of the process vs identifying defects, for manufacturing green batteries : A study on the effect of light conditions on thedetection of defects in cathode foil in batteries

    University essay from KTH/Mekatronik

    Author : Behnam Yosef Nezhad Arya; [2021]
    Keywords : Contrast; Surface; Resolution; Speed; Defect; Sensor; Battery; Computer vision; Roll-to-roll; Contact Image Sensor; Mechatronics; Ljusinställning; Yta; Kontrast; Resolution; Hastighet; Defekt; skada; Sensor; Batteri; Computer vision; Roll-to-roll; Contact Image Sensor; Mekatronik.;

    Abstract : This Master’s thesis work is about the conditions that can affect the identification of defects in lithium-ion batteries. In lithium batteries, there are cathode and anode, which are separated with electrically insulative but ionically conductive electrolytes and separators. READ MORE

  5. 4. The disclosure of Otto Meyer's secret : An evaluation of composition and casting properties of the Fritzi alloy

    University essay from KTH/Materialvetenskap

    Author : Simon Nordenskiöld; Elias Nybacka Reiland; [2020]
    Keywords : ;

    Abstract : The increased copper price during the first world war forced the Swedish master founder OttoMeyer to invent a new alloy in order to continue casting artworks at a reasonable cost. The recipe of the alloy was a secret that Meyer kept to himself even unto death. READ MORE

  6. 5. Design and Simulation of a Slotless Aircored PM Synchronous Generator

    University essay from Uppsala universitet/Institutionen för elektroteknik

    Author : Bakhtiyar Asef Hasnain; Ademir Hodzic; [2020]
    Keywords : Slotless; Aircored; PM; Permanent Magnet; PMSG; Permanent Magnet Synchronous Generator; SPMSG; COMSOL; FEMM; FEM; Solidworks; Fusion 360; Axial Flux Generator;

    Abstract : This thesis is a study on an unconventional slow speed direct drive permanent magnet (PM) generator. Unlike a standard permanent magnet synchronous generator (PMSG) which has the copper coils wound around iron teeth, the work in this thesis will present a generator where the copper coils are directly mounted on the stator which eliminates the slots and teeth in the generator. READ MORE