Results 191 to 200 of about 4,474,743 (294)

LOGNFIT: Stata module to fit lognormal distribution by maximum likelihood

lognfit fits by ML the 2 parameter lognormal distribution to sample observations on a random variable. lognpred calculates statistics summarizing a lognormal distribution which has been fitted using lognfit.
Stephen P. Jenkins
core  

On the Exact Limiting Distribution of a Volatility Target Index

Mathematical Finance, EarlyView.
ABSTRACT Assuming a lognormal distribution for the underlying risky asset, we study the limiting distribution of a volatility target index as the rebalancing time step approaches zero. Two limit theorems (a strong law of large numbers and a central limit theorem) are established, and as an application, the exact limiting distribution is derived.
Xuan Liu, Michel Gauthier
wiley   +1 more source

Solar Cycle Variation of the Distribution of Photospheric Magnetic Flux Features. [PDF]

Sol Phys
Noble CN, Parnell CE, Neukirch T.
europepmc   +1 more source

Do State Lotteries Exploit their Lottery Power? Optimal Lotto Pricing With Heterogeneous Players: Evidence from the United Kingdom

Oxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT We propose a new model of revenue‐maximising lottery pricing under income‐related heterogeneity and apply it to 13 years of UK National Lottery data. Our pricing rule shows how a state's lottery power is shaped by heterogeneities in lotto demand and the income distribution, and we study its efficiency and distributional implications.
Martin Forster, Emanuela Randon, Robert Pryce   +2 more
wiley   +1 more source

A Quantitative Approach to Biodiversity Offset Multipliers: Managing Uncertainty in Complex Projects. [PDF]

Environ Manage
van der Lee AS, Brook ME, Koops MA.
europepmc   +1 more source

Rapid responses of marsh birds to large‐scale tidal wetland restoration in California's Sacramento–San Joaquin Delta

Restoration Ecology, EarlyView.
Abstract Introduction Tidal wetland restoration is widely used to recover ecosystem function in modified estuaries, yet uncertainty remains about how quickly wildlife communities respond. Early trajectories are central to evaluating restoration success, guiding adaptive management, and building ecosystem resilience in engineered landscapes. Marsh birds
Jason Riggio, Danielle T. Fradet, Amanda S. Kindel, Michelle Mah, Kristen A. Zumdahl, Molly Ferrell, Andrew Engilis   +6 more
wiley   +1 more source

A distributionally-robust bayesian adaptive EWMA chart for joint surveillance of lognormal process location and scale. [PDF]

PLoS One
Ali H, Saidani O, Kouki M, Himmat B.
europepmc   +1 more source

On the Origin of the Tingidae (Insecta, Heteroptera)

Zoologica Scripta, EarlyView.
ABSTRACT The hypothesis of a Gondwanian origin of the family Tingidae (Insecta, Heteroptera) has been promoted and seems to be generally accepted by specialists. However, the area of emergence and diversification of the clade, South American or Australian, is still debated and cannot be solved without integrating Vianaidinae, a subfamily considered as ...
Gilardet Rémy, Deregnaucourt Isabelle, Guidoti Marcus, Guilbert Eric   +3 more
wiley   +1 more source

Stochastic expansion of radionuclide inhalation dosimetry for consequence management application: uncertainty and sensitivity analysis in the ICRP 130 human respiratory tract model. [PDF]

J Radiol Prot
Mate-Kole EM, Howard SC, Golden AP, Hooper DA, Wilson BA, Dewji SA.   +5 more
europepmc   +1 more source

Through the Sands of Time: Evolutionary History and Systematics of the Awl‐Headed Snakes (Colubridae: Lytorhynchus) in the Saharo‐Sindian Region

Zoologica Scripta, EarlyView.
ABSTRACT The psammophilous colubrid genus Lytorhynchus is widely distributed in the deserts of the Saharo‐Sindian region and adjacent areas. The taxonomy of the genus and the number of recognised species have remained unstable since the last taxonomic revision in 1970, with differing views on the taxonomic status of L. gaddi and L. kennedyi.
Lukáš Pola, Daniel Jablonski, Rafaqat Masroor, Bassam Abu Afifeh, Roberta Graboski, Mohammad Abu Baker, Zuhair S. Amr, Ahmed Mohajja AlShammari, Avrajjal Ghosh, Salvador Carranza, Jiří Šmíd   +10 more
wiley   +1 more source