Results 161 to 170 of about 1,519,482 (308)
Temporal structure of firm growth and the impact of R&D [PDF]
This paper examines the time structure of the effects of R&D activities on firm growth. The main questions are whether R&D activities come together with firms' growth in the subsequent periods and how this relationship depends on other characteristics of
Brenner, Thomas, Schimke, Antje
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Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Market Size and Vertical Structure in the Railway Industry [PDF]
We provide a theoretical framework to discuss the relation between market size and vertical structure in the railway industry. The framework is based on a simple downstream monopoly model with two input suppliers, labor forces and the rail infrastructure
Fumitoshi Mizutani, Noriaki Matsushima
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Advanced Engineering Materials, EarlyView.Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm +5 more
wiley +1 more source
Threshold effects and firm size: The case of firing costs [PDF]
We study the role of employment protection legislation (EPL) in determining firm size distribution. In many countries the provisions of EPL are more stringent for firms above certain size thresholds. We construct a simple model that shows that the smooth
Fabiano Schivardi, Roberto Torrini
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Advanced Engineering Materials, EarlyView.This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar +7 more
wiley +1 more source
Understanding the Variations in Gibrat's Law with a Markov-Perfect Dynamic Industry Model [PDF]
Gibrat's Law of proportionate effect, as applied to firms, states that the growth rate of a firm is independent of its size. Empirical work on firm dynamics finds crucial deviations from Gibrat's Law such as smaller firms growing faster than larger firms
Ana Sofia Domingues Rodrigues +1 more
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Numerical Exploration of Thermal Shock Resistance in MgO–C Refractories
Advanced Engineering Materials, EarlyView.A mesostructure‐resolved numerical framework is developed to evaluate the thermal shock resistance of MgO–C refractories. By modeling interface debonding under rapid temperature changes and introducing a modified thermal shock parameter that accounts for mesocracks, the study shows how graphite content and aggregate size influence thermal shock ...
Jishnu Vinayak Gopi +3 more
wiley +1 more source
Risk sharing and firm size: theory and international evidence [PDF]
This paper investigates the relationship between financial development and firm size. The model shows that the efficiency of the financial system, measured by the level of monitoring costs, affects the extent of risk sharing within an economy and through
Giannetti, Mariassunta
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