Results 41 to 50 of about 1,997,664 (317)

Network topology drives population temporal variability in experimental habitat networks

Population Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu, J. Angus Webb, William D. Bovill, Elise L. King   +3 more
wiley   +1 more source

On the expressive power of read-once determinants

, 2015
We introduce and study the notion of read-$k$ projections of the determinant: a polynomial $f \in \mathbb{F}[x_1, \ldots, x_n]$ is called a {\it read-$k$ projection of determinant} if $f=det(M)$, where entries of matrix $M$ are either field elements or ...
A Shpilka, D Grigoriev, F James, G Ivanyos, J zur Gathen von, M Jansen, M Jerrum, N Nisan, T Mignon   +8 more
core   +1 more source

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

Population Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

Population Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source

Generalized matrix functions, determinant and permanent

پژوهش‌های ریاضی, 2022
Introduction Since linear and multilinear algebra has many applications in different branches of sciences, the attention of many mathematicians has been attracted to it in recent decades. The determinant and the permanent are the most important functions
Mohammad Hossein Jafari, Ali Reza Madadi
doaj  

Consumers’ frequency of purchasing behavior of organic honey and butter foods from the farmers’ food product market in Northwest, Ethiopia: a poisson regression approach

Cogent Social Sciences, 2022
World economies are currently concerned about insufficient food supplies, food adulteration, and heavy reliance on manufactured foods. The study investigated the frequency of purchasing behaviors of organic honey and butter foods from the farmers’ food ...
Fasika Chekol, Minas Hiruy, Ashebir Tsegaye, Teshager Mazengia, Yigardush Alimaw   +4 more
doaj   +1 more source

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

Population 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, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source

Low birth weight and its association factors in Iran: according world health organization model

Journal of Rehabilitation, 2012
Objective: Birth weight is one of the most important ,simplest and common determinations for assessments infants status in each country. this study has been designed to investigate the articles that published in its prevalence and related factors ...
zohreh Mahmoudi, Masoud Karimlou, Homeira Sajjadi, Ma'soumeh Dejman, Marveh Vameghi   +4 more
doaj  

Circular Entrepreneurship in Emerging Markets through the Lens of Sustainability

Journal of Open Innovation: Technology, Market and Complexity, 2022
: The purpose of this research paper is to explore the antecedents and consequences of circular entrepreneurship in emerging markets. The consequences of circular entrepreneurship will be explored through the lens of three dimensions of sustainability ...
Rui Miguel Dantas, Aamar Ilyas, João Xavier Rita   +2 more
doaj   +1 more source

On the Construction of Correlation Functions for the Integrable Supersymmetric Fermion Models

, 2006
We review the recent progress on the construction of the determinant representations of the correlation functions for the integrable supersymmetric fermion models.
Beisert N., de Vega H. J., Drinfeld V. G., Essler F. H. L., Izergin A. G., Jimbo M., Kazakov V. A., Kitanine N., Minahan J. A., SHAO-YOU ZHAO, WEN-LI YANG, Yang W.-L., Yang W.-L., YAO-ZHONG ZHANG, Zamolodchikov A. B., Zhao S.-Y.   +15 more
core   +1 more source