Results 111 to 120 of about 30,033 (263)

COORDINATION OF LEADER-FOLLOWER MULTI-AGENT SYSTEM WITH TIME-VARYING OBJECTIVE FUNCTION [PDF]

, 2017
This thesis aims to introduce a new framework for the distributed control of multi-agent systems with adjustable swarm control objectives. Our goal is twofold: 1) to provide an overview to how time-varying objectives in the control of autonomous systems ...
Fabian, Zalan Mark
core   +1 more source

Notes on Hummingbirds at Chiriqui, Panama [PDF]

, 1942
C. Brooke Worth
openalex   +1 more source

Unveiling Wasps as Potential Pollinators: Floral Traits and Wasp Sociality Intensify Network Centrality in a Highly Diverse Tropical Ecosystem

Journal of Applied Entomology, EarlyView.
ABSTRACT Wasps, members of over 90 hymenopteran families, exhibit diverse behaviours, including pollination, predation and parasitism. While wasps are known pollinators in specialised systems, such as the intricate mutualism of fig trees and the deceptive pollination of certain orchids, they have historically been considered ineffective pollinators ...
Beatriz Lopes Monteiro, Julio Cesar Lopes Santiago, Leonor Patricia Cerdeira Morellato, Geraldo Wilson Fernandes, Irene Gélvez‐Zúñiga   +4 more
wiley   +1 more source

Favorite Colors of Hummingbirds [PDF]

, 1930
A. L. Pickens
openalex   +1 more source

Influence of drought stress on the metabolite and ion composition in nectar and nectaries of different day‐ and night‐flowering Nicotiana species

Plant Biology, EarlyView.
Drought stress leads to reduced nectar secretion and alters nectar composition of day‐ and night‐flowering Nicotiana species, which may impair plant–pollinator interactions. Abstract The frequencies of droughts worldwide will increase in the future due to climate changes. Nectar composition of plant species varies in relation to pollinator and can also
T. Göttlinger, D. Naegel, J. E. Dick, G. Lohaus   +3 more
wiley   +1 more source

The rate of visitation by Amazilia fimbriata (Apodiformes: Trochilidae) influences seed production in Tillandsia stricta (Bromeliaceae)

Zoologia (Curitiba), 2015
Legitimate flowers visitors pollinate the flower during the visit and thus influence the production of fruits and seeds. We tested whether the visitation rate of potential pollinators is associated with the amount of seeds per fruit produced by the self ...
Caio C.C. Missagia, Maria Alice S. Alves
doaj   +1 more source

Bract size affects resource availability and fruit set in a hummingbird‐pollinated plant with distyly polymorphism

Plant Biology, EarlyView.
In Psychotria poeppigiana, larger bracts honestly signal greater nectar availability but have higher mortality, while smaller bracts produce more fruit, revealing a surprising trade‐off and hints of sexual role specialization in this distylous species. Abstract Plants can use non‐floral signals to advertise the presence of resources to pollinators. The
R. Trevizan, P. E. Oliveira, V. L. G. Brito, L. Oliveira, F. Telles   +4 more
wiley   +1 more source

LSO-006 Targeting pathogenic auto-reactive VH4-34 B cells with a rationally developed and highly specific anti-VH4-34 antibody offers a new therapeutic approach for VH4-34 autoimmune disorders

Lupus Science and Medicine, 2023
Dipti Thakkar, Konrad Paszkiewicz, Shalini Paliwal, Piers Ingram, Jerome Boyd-Kirkup, Wen Jie Chin, Warren Lee, Jie Ying Jacklyn Neo, Brendon Hanson   +8 more
doaj   +1 more source

Observations on the Nesting of the Allen Hummingbird [PDF]

, 1939
Robert T. Orr
openalex   +1 more source

Sharpening the Search Saw: Lessons from Expert Searchers [PDF]

, 2015
Many students consider themselves to be proficient searchers and yet are disappointed or frustrated when faced with the task of locating relevant scholarly articles for a literature review. This bleak experience is common among higher education students,
Tucker, Virginia M.
core   +2 more sources