Results 41 to 50 of about 19,785 (237)

Research progress on dimensional accuracy control technologies of complex thin-walled superalloy investment castings for aero-engines

open access: yesJournal of Aeronautical Materials
Superalloys are predominantly employed to crucial aviation hot-end components such as turbine rear casings,diffusers,and pre-swirl nozzles. The investment casting technology supersedes “casting + welding” forming approaches,which reduces the number of ...
CUI Jiayu   +6 more
doaj   +1 more source

Assessing the Impact: Does an Improvement to a Revenue Management System Lead to an Improved Revenue? [PDF]

open access: yesarXiv, 2021
Airlines and other industries have been making use of sophisticated Revenue Management Systems to maximize revenue for decades. While improving the different components of these systems has been the focus of numerous studies, estimating the impact of such improvements on the revenue has been overlooked in the literature despite its practical importance.
arxiv  

Hygroscopic Expansion of some Casting Investments [PDF]

open access: yesJournal of Dental Research, 1950
CREDIT is generally given to Taggart1 for introducing the cast gold inlay to the dental profession. Although he realized that gold shrinks when cooled from molten state to solid state of room temperature, the investment available to him did not supply sufficient compensation.
Landgren, N., Peyton, Floyd Avery
openaire   +4 more sources

Simulation Study on the Investment Casting Process of a Low-Cost Titanium Alloy Gearbox based on ProCAST

open access: yesAdvances in Materials Science and Engineering, 2022
A model of investment casting of a titanium alloy gearbox based on the ProCAST software was established in this work, and the simulated result was used to optimize the casting process.
Qiang Liao   +6 more
doaj   +1 more source

Minimal Investment Risk of Portfolio Optimization Problem with Budget and Investment Concentration Constraints [PDF]

open access: yes, 2016
In the present paper, the minimal investment risk for a portfolio optimization problem with imposed budget and investment concentration constraints is considered using replica analysis. Since the minimal investment risk is influenced by the investment concentration constraint (as well as the budget constraint), it is intuitive that the minimal ...
arxiv   +1 more source

Defending Against Adversarial Attacks by Energy Storage Facility [PDF]

open access: yesarXiv, 2022
Adversarial attacks on data-driven algorithms applied in the power system will be a new type of threat to grid security. Literature has demonstrated that the adversarial attack on the deep-neural network can significantly mislead the load fore-cast of a power system.
arxiv  

Research of Fluidity for new LPIC Technology [PDF]

open access: yesArchives of Foundry Engineering
Today, the emphasis is on rapid development and research of new technologies in all technical fields. In most cases, research and development involves practical experiments, which can be very costly to carry out.
A. Herman   +3 more
doaj   +1 more source

Towards Optimal Integrated Planning of Electricity and Hydrogen Infrastructure for Large-Scale Renewable Energy Transport [PDF]

open access: yesarXiv, 2022
The imminent advent of large-scale green hydrogen (H2) production raises the central question of which of the two options, transporting "green" molecules, or transporting "green" electrons, is the most cost-effective one. This paper proposes a first-of-its-kind mathematical framework for the optimal integrated planning of electricity and H2 ...
arxiv  

Rheological Properties of Typical Ceramic Slurries Used in the Lost Wax Technology

open access: yesArchives of Foundry Engineering, 2017
The results of investigations of the rheological properties of typical ceramic slurries used in the investment casting technology - the lost wax technology are presented in the paper. Flow curves in the wide range of shear velocity were made.
Kolczyk J., Jamrozowicz Ł., Kaźnica N.
doaj   +1 more source

Modeling the Impact of Imbalance Costs on Generating Expansion of Stochastic Units [PDF]

open access: yesarXiv, 2014
The imbalance costs incurred by a stochastic power producer due to forecast production errors have a significant impact on its total profit and therefore, such an impact needs to be taken into account when evaluating investment decisions. In this paper, we propose a modeling framework to analyze the effect of these imbalance costs on optimal generating
arxiv  

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