Results 101 to 110 of about 978,873 (288)
Agribusiness, EarlyView.ABSTRACT In emerging economies where smallholder farming dominates agricultural production, agribusinesses serve as critical intermediaries linking smallholders to broader markets, and their resilience directly affects agricultural sustainability. Short‐term‐oriented capital is reluctant to adequately finance highly uncertain and cyclical agricultural ...
Siyuan Lyu +5 more
wiley +1 more source
Robust rolling stock in rapid transit networks
Computers & Operations Research, 2011 This paper focuses on the railway rolling stock circulation problem in rapid transit networks, in which frequencies are high and distances are relatively short. Although the distances are not very large, service times are high due to the large number of intermediate stops required to allow proper passenger flow.
Cadarso Morga, Luis +1 more
openaire +2 more sources
Rolling mill roll design [PDF]
, 2001 In this thesis, some previously published experimental and theoretical studies of hot rolling are reviewed. A thorough understanding of the available roll design methods, and conditions of their application is extremely important in order to achieve the ...
Jing, Limei
core
Weather Attention in Online Discourse and Price Uncertainty in Agricultural Futures Markets
Agribusiness, EarlyView.ABSTRACT Weather is a central determinant of production risk in agricultural markets, but markets respond not only to weather conditions themselves, but also to how those conditions are noticed, framed, and interpreted in public discourse. In this setting, real‐time online weather discussions may shape price uncertainty by influencing how market ...
Mario A. Ortez +3 more
wiley +1 more source
Stock returns and volatility: Evidence from the Athens Stock market index
, 2001 This paper investigates the volatility of the Athens Stock excess stock returns over the period 1990–1999 through the comparison of various conditional hetero-skedasticity models.
Apergis, Nicholas, Eleftheriou, Sofia
core
Random processes of interaction between track and rolling stock
, 2016 Optimization of life-cycle cost of structures of railway track for different lines is a multi-task. Railway track can be seen as a dynamic system, which is got as the input deteriorating impact - operational load and enhancing impact - maintenance and ...
A. Y. Kogan +2 more
core +1 more source
AIChE Journal, EarlyView.Abstract The rapid growth of AI data centers (AIDCs) is intensifying stress on power systems and exposing operators to volatile electricity markets. This work develops a process‐informed co‐optimization framework that integrates liquid air energy storage (LAES) with AIDC operation. Unlike black‐box storage models, the proposed formulation captures LAES
Zhicong Fang +3 more
wiley +1 more source
Rolling Bearing Fault Diagnosis Based on Optimized VMD and SSAE
IEEE AccessThe monitoring and fault diagnosis of axle-box bearings in high-speed trains is crucial for ensuring safe train operations. The vibration signals of these bearings exhibit non-stationary and non-linear characteristics.
Baoxian Chang +4 more
doaj +1 more source
Robot‐Assisted Measurement of the Critical Micelle Concentration
Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.The study introduces (SIMO) smart integrator for manual operations, a robotic platform for precise, repeatable determination of (CMC) critical micelle concentration in surfactants. SIMO reduces standard deviation by 80% compared to manual methods. Surfactant, dye, and diluent selection, robotic protocols, and data handling are detailed.
Vincenzo Scamarcio +3 more
wiley +1 more source
LubricantsTurnouts represent a critical element of railway infrastructure, and are subjected to some of the highest mechanical stresses due to the discontinuity of the track geometry. Failures in this area generate high maintenance costs and may compromise traffic
Mihaela Cristina Tudorache +4 more
doaj +1 more source