Results 111 to 120 of about 1,366,184 (231)

A computational study of thrust augmenting ejectors based on a viscous-inviscid approach [PDF]

A viscous-inviscid interaction technique is advocated as both an efficient and accurate means of predicting the performance of two-dimensional thrust augmenting ejectors.
Lund, Thomas S., Roberts, Leonard, Tavella, Domingo A.   +2 more
core   +1 more source

Estimation Using Marginal Competitor Sales Information

Journal of Operations Management, Volume 71, Issue 5, Page 588-610, July 2025.
ABSTRACT An abiding preoccupation for firms is understanding how customers value their products versus competitors' products. This is difficult to quantify and estimate from data as, even if competitor prices are public information, their sales are typically unobservable.
Kalyan Talluri, Müge Tekin
wiley   +1 more source

Das Äquivalenzprinzip der Finanzmathematik [PDF]

Das Äquivalenzprinzip der Finanzmathematik vergleicht und bewertet Zahlungsströme. Dazu ist eine Bewertung von Zeit und von Unsicherheit notwendig. Aus einem mathematischen Blickwinkel gesehen ist die Bewertung eine Äquivalenzrelation.
Walther, Ursula
core  

Modeling Versus Balancing Approaches to Addressing Instrumental Variables in Weighting: A Comparison of the Outcome‐Adaptive Lasso, Stable Balancing Weighting, and Stable Confounder Selection

Pharmacoepidemiology and Drug Safety, Volume 34, Issue 7, July 2025.
ABSTRACT Background Variable selection is essential for propensity score (PS)‐weighted estimators. Recent work shows that including instrumental variables (IVs), associated with only treatment but not with the outcome, can impact both the bias and precision of the PS‐weighted estimators.
Byeong Yeob Choi, M. Alan Brookhart
wiley   +1 more source

On the Replica Symmetric Solution in General Diluted Spin Glasses

Random Structures &Algorithms, Volume 66, Issue 4, July 2025.
ABSTRACT We present a unifying approach to studying the replica symmetric solution in general diluted spin glass models on random p$$ p $$‐uniform hypergraphs with sparsity parameter α$$ \alpha $$. Our result shows that there exist two key regimes in which the model exhibits replica symmetry and the free energy can be explicitly represented as the ...
Ratul Biswas, Wei‐Kuo Chen, Arnab Sen
wiley   +1 more source

A Curriculum Integrating STEAM and Maker Education Promotes Pupils' Learning Motivation, Self-Efficacy, and Interdisciplinary Knowledge Acquisition. [PDF]

Front Psychol, 2021
Jia Y, Zhou B, Zheng X.
europepmc   +1 more source

Space‐Time Simulation of Hourly Rainfall From Areal Statistics Accounting for Spatial Heterogeneity and Anisotropy

Water Resources Research, Volume 61, Issue 7, July 2025.
Abstract A stochastic space‐time model for hourly rainfall is proposed with the aim of generating inputs for distributed hydrological models used to estimate extreme floods. The model is based on the multi‐stage procedure adopted in the STREAP model of Paschalis et al.
P. Cantet, B. Renard, J. A. Fine, P. Arnaud   +3 more
wiley   +1 more source

Enhanced capabilities for multi‐crystal data collection based on double mesh scans

Acta Crystallographica Section D, Volume 81, Issue 7, Page 344-356, July 2025.
A method for multi‐crystal data collection and the software programs Dozor, Dozor‐m2 and Resheteau for the detection of individual crystals, the determination of their positions on a sample holder and the estimation of their dimensions and shapes based on double raster X‐ray scans are presented.Two‐dimensional X‐ray mesh (raster) scans are broadly used
Igor Melnikov, Olof Svensson, Gleb Bourenkov, Alexander Popov   +3 more
wiley   +1 more source

Flight behaviour of Red Kites within their breeding area in relation to local weather variables: Conclusions with regard to wind turbine collision mitigation

Journal of Applied Ecology, Volume 62, Issue 7, Page 1624-1635, July 2025.
Flight behaviour was highly variable. Flights occurred during all weather conditions at different altitudes throughout the day over the entire season. Further research into the relationship between flight behaviour, weather variables, collisions and other factors is needed as a basis for developing shutdown regimes generally suitable for raptors.
Janine Aschwanden, Herbert Stark, Felix Liechti   +2 more
wiley   +1 more source

Spatial and spatiotemporal volatility models: A review

Journal of Economic Surveys, Volume 39, Issue 3, Page 1037-1091, July 2025.
Abstract Spatial and spatiotemporal volatility models are a class of models designed to capture spatial dependence in the volatility of spatial and spatiotemporal data. Spatial dependence in the volatility may arise due to spatial spillovers among locations; that is, in the case of positive spatial dependence, if two locations are in close proximity ...
Philipp Otto, Osman Doğan, Süleyman Taşpınar, Wolfgang Schmid, Anil K. Bera   +4 more
wiley   +1 more source