Results 21 to 30 of about 11,193,863 (298)

Dynamic Behaviors of a Single Species Stage Structure Model with Michaelis–Menten-TypeJuvenile Population Harvesting

open access: yesMathematics, 2020
A single species stage structure model with Michaelis–Menten-type juvenile population harvesting is proposed and investigated. The existence and local stability of the model equilibria are studied.
Xiangqin Yu, Zhenliang Zhu, Fengde Chen
doaj   +1 more source

Image mapping of biological changes and structure-function relationship during rice grain development via Synchrotron FTIR spectroscopy

open access: yesFood Chemistry Advances, 2023
The spatial distribution of compositional elements in milky, dough, and mature rice, together with the structure-function relationship was studied using synchrotron-FTIR.
Ashoka Ranathunga   +5 more
doaj   +1 more source

Temporal effects of disturbance on community composition in simulated stage‐structured plant communities

open access: yesEcology and Evolution, 2018
In an era of global environmental change, understanding how disturbance affects the dynamics of ecological communities is crucial. However, few studies have theoretically explored the potential influence of disturbance including both intensity and ...
Youshi Wang   +4 more
doaj   +1 more source

Variable structure control for a singular biological economic model with time delay and stage structure

open access: yesAdvances in Difference Equations, 2017
A singular biological economic model which considers a prey-predator system with time delay and stage structure is proposed in this paper. The local stability at the equilibrium point and the dynamic behavior of the model are studied.
Yi Zhang, Yudan Wei
doaj   +1 more source

Stage-structured models for interacting wild and sterile mosquitoes

open access: yes上海师范大学学报. 自然科学版, 2014
Using the sterile insect technique,in which sterile mosquitoes are released to reduce or eradicate the wild mosquito population,is an effective weapon to prevent transmission of mosquito-borne diseases.To study the impact of the sterile insect technique ...
Jia Li
doaj   +1 more source

Morphological Ontogeny, Ecology, and Biogeography of Fuscozetes fuscipes (Acari, Oribatida, Ceratozetidae)

open access: yesAnimals
The systematic status of Fuscozetes Sellnick, 1928, is not clear in the literature. Therefore, the morphological ontogeny of F. fuscipes (C.L. Koch, 1844), the type species of this genus, was investigated and compared with its congeners in this study ...
Stanisław Seniczak   +2 more
doaj   +1 more source

Two-stage spline-approximation in linear structure routing

open access: yesРоссийский технологический журнал, 2021
In the article, computer design of routes of linear structures is considered as a spline approximation problem. A fundamental feature of the corresponding design tasks is that the plan and longitudinal profile of the route consist of elements of a given ...
D. A. Karpov, V. I. Struchenkov
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

Stage levels, states, and the semantics of the copula [PDF]

open access: yes, 2013
The paper investigates the issue whether the stage-level/individual level contrast introduced by Carlson 1977 requires the assumption of two homonymous copulas depending on the categorization of the predicative.
Jäger, Gerhard
core  

DOES BOARD STRUCTURE AND OWNERSHIP STRUCTURE INFLUENCE THE PERFORMANCE OF LISTED COMPANIES: EVIDENCE FROM PHARMACEUTICALS AND CHEMICAL INDUSTRY OF BANGLADESH?

open access: yesCopernican Journal of Finance & Accounting, 2023
This study examines the influence of board structure and ownership structure on a firm’s financial performance in the pharmaceutical and chemical industry of Bangladesh.
Brishti Chakraborty
doaj   +1 more source

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