Results 121 to 130 of about 104,920 (275)

Novel method to calculate average bit error probability of UWB non-coherent system

Tongxin xuebao, 2010
A novel method based on clustered point process was proposed to calculate average bit error probability（ABEP） of UWB non-coherent system on IEEE 802.15.3a channel.In particular,the expectation and variance of the sig-nal to noise ratio（SNR） in the ...
YANG Zhi-hua1, WANG Ye1, ZHANG Qin-yu1, WANG Yu-feng 2, LIU Ning-ning 3, ZHANG Nai-tong1   +5 more
doaj   +2 more sources

Mitigating policy uncertainty: What financial markets reveal about firm‐level lobbying

American Journal of Political Science, EarlyView.
Abstract Elections can lead to substantial policy changes and, thus, are a significant source of risk. Firms can respond to such policy uncertainty by lobbying, but it is hard to quantify whether they do so and, if so, how much lobbying benefits them. We construct a new dataset and leverage investors’ expectations of variability in stock returns in the
Kristy Buzard, Nathan Canen, Sebastian Saiegh   +2 more
wiley   +1 more source

Mixed Lognormal Distributions for Derivatives Pricing and Risk-Management [PDF]

Many derivatives prices and their Greeks are closed-form expressions in the Black-Scholes model; when the terminal distribution is a mixed lognormal, prices and Greeks for these derivatives are then a weighted average of these closed-form) expressions ...
Dietmar Leisen
core  

Understanding cooperative membership and maize market participation in Rwanda: A Bayesian triple‐hurdle analysis

Annals of Public and Cooperative Economics, EarlyView.
Abstract Smallholder market participation studies often focus narrowly on selling decisions, overlooking the institutional role of agricultural cooperatives, particularly in contexts like Rwanda, where cooperatives underpin agricultural policy. Consequently, empirical evidence on how cooperative membership shapes farmers’ commercialization across ...
John N. Ng'ombe, Jules Ngango, Aristide Maniriho, Martinson Ankrah Twumasi   +3 more
wiley   +1 more source

IRT‐based response style models and related methodology: Review and commentary

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract We provide a review and commentary on recent methodological research related to item response theory (IRT) modelling of response styles in psychological measurement. Our review describes the different categories of IRT models that have been proposed, their associated assumptions and extensions, and the varying purposes they can serve.
Daniel M. Bolt, Lionel Meng
wiley   +1 more source

Las publicaciones sobre el péndulo: un análisis comparativo Publications on the Pendulum: a comparative analysis

Investigación Bibliotecológica: Archivonomía, Bibliotecología e Información, 2012
Este trabajo re-evalúa la productividad de los autores sobre la literatura del péndulo publicada desde 1629 a 1885. Replica los datos del trabajo de Moreno-Cabo & Solaz-Portolés (2008).
Cristina Restrepo Arango, Rubén Urbizagástegui Alvarado   +1 more
doaj  

Dynamical Gaussian, lognormal, and reverse lognormal maximum‐likelihood ensemble filter

Quarterly Journal of the Royal Meteorological Society
AbstractWe present a non‐Gaussian ensemble data assimilation method based on the maximum‐likelihood ensemble filter, which allows for any combination of Gaussian, lognormal, and reverse lognormal errors in both the background and the observations.
Senne Van Loon, Steven J. Fletcher, Milija Zupanski   +2 more
openaire   +1 more source

Tau‐targeting active immunotherapy slows progression and reduces pathology in mouse models of tauopathy

Brain Pathology, EarlyView.
The efficacy of the novel anti‐tau active immunotherapy, p5555kb, was tested using two mouse models of tau pathology. p5555kb inoculation increased the survival rate and reduced tau pathology in tau‐overexpressing P301L mice and decreased tau seeding in the brains of C57BL/6 mice injected with human‐purified Alzheimer's disease tau.
Christopher M. Brown, Jeanne K. Brooks, Louise Kelly, Madeline M. Vroom, Matthew Longo, Jean‐Cosme Dodart, Roxana Carare, Justin D. Boyd   +7 more
wiley   +1 more source

Aggregate productivity effect of labour and capital market distortions in Canada

Canadian Journal of Economics/Revue canadienne d'économique, EarlyView.
Abstract How efficiently are workers, investment capital, and production distributed across firms in Canada? And how have they varied over time, across regions, and between sectors? To answer these questions, we present novel measures of the degree of resource misallocation over time and space using uniquely detailed firm‐level data (T2‐LEAP) between ...
Yu Chen, Trevor Tombe
wiley   +1 more source

Modelando la distribución del número de co-autores por artículo Modeling the distribution of co-authorships by paper

Investigación Bibliotecológica: Archivonomía, Bibliotecología e Información, 2011
Este artículo explora la modelación del número de autores que colaboran en la publicación de un artículo. Con ese fin se analizaron la distribución geométrica, la distribución Poisson truncada, la distribución Poisson lognormal y la distribución Gauss ...
Rubén Urbizagástegui Alvarado, Cristina Restrepo Arango   +1 more
doaj