Results 31 to 40 of about 254,176 (313)

Exponential smoothing for intermittent demand with demand basis updated more frequently than seasonality factors

open access: yesGestão & Produção, 2019
This study aims to present an alternative technique of exponential smoothing to estimate the demand for items with intermittent and seasonal demand. The usual technique would aggregate demand periods (months in quarters, for instance) to calculate a ...
Jorge Luiz de Biazzi
doaj   +1 more source

Modeling the effect of temperature on dengue virus transmission with periodic delay differential equations

open access: yesMathematical Biosciences and Engineering, 2020
Dengue fever is a re-emergent mosquito-borne disease, which prevails in tropical and subtropical regions, mainly in urban and peri-urban areas. Its incidence has increased fourfold since 1970, and dengue fever has become the most prevalent mosquito-borne
Haitao Song , Dan Tian , Chunhua Shan
doaj   +1 more source

Perbandingan Peramalan Dengan Metode Eksponensial Smoothing dan Winter Multiplicative Seasonality pada Data Penjualan Songkok Nasional UMKM di Kabupaten Gresik

open access: yesMatematika, 2019
Abstrak. Data penjualan songkok Nasional yang diproduksi oleh UMKM kabupaten Gresik selalu mengalami fluktuatif dan data tersebut juga berpengaruh adanya trend naik.
Anik Rufaidah, Muhamad Afif Effindi
doaj   +1 more source

Tourism climatic index in the valorisation of climate in tourist centers of Montenegro [PDF]

open access: yesGlasnik Srpskog Geografskog Društva, 2013
Climate is one of the main factors for the development of recreational forms of tourism in Montenegro. It affects the temporal arrangement and spatial distribution of tourists throughout the year.
Joksimović Marko   +2 more
doaj   +1 more source

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

open access: yesPopulation Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

open access: yesPopulation Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva   +6 more
wiley   +1 more source

Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders

open access: yesPopulation Ecology, EarlyView.
We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa   +2 more
wiley   +1 more source

Seasonal Amplitude of Water Storage Variations of the Yangtze–Huai Plain Lake Group: Implicaion for Floodwater Storage Capacity

open access: yesFrontiers in Environmental Science, 2022
Lakes are of significant importance in regulating floods and providing water sources. The seasonal water storage variations for the plain lake group in the Yangtze–Huai River Basin (YHRB) are significant for alleviating flood pressure and regulating ...
Lijuan Song   +7 more
doaj   +1 more source

Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors

open access: yesPopulation Ecology, EarlyView.
Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley   +1 more source

Tourism seasonality and destination management implications for Mana Pools tourist destination in Zimbabwe. [PDF]

open access: yesAfrican Journal of Hospitality, Tourism and Leisure, 2017
This study investigated tourism seasonality and its corresponding management implications for Mana Pools tourist destination. Seasonality represents one of the key challenging characteristics of the tourism industry.
Simon Chiutsi, Boycen Kumira Mudzengi
doaj  

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