Results 101 to 110 of about 7,144 (220)

A Study on Sum Formulas for Generalized Tribonacci Numbers: Closed Forms of the Sum Formulas ∑_{k=0}ⁿkx^{k}W_{k}, ∑_{k=1}ⁿkx^{k}W_{-k}

, 2020
In this paper, closed forms of the sum formulas ∑_{k=0}ⁿkx^{k}W_{k}, ∑_{k=1}ⁿkx^{k}W_{-k} for generalized Tribonacci numbers are presented. As special cases, we give summation formulas of Tribonacci, Tribonacci-Lucas, Padovan, Perrin, Narayana and some ...
Soykan, Yüksel
core  

Rapid disruption of pollination function by the invasive plant Impatiens glandulifera

Plant Biology, EarlyView.
Invasion by Impatiens glandulifera rapidly disrupts pollination of the native plant Stachys sylvatica by altering pollen transport by shared bumblebee pollinators. A short‐term field introduction revealed a dramatic decline in conspecific pollen deposition within 4 days, showing that pollination function can collapse quickly following invasion, even ...
R. Pérez‐Barrales, L. M. Taylor, G. Horn, S. Ben‐Menni Schuler   +3 more
wiley   +1 more source

The Diffusion of International Environmental Agreements: The Role of Learning, Competition and Emulation

Regulation &Governance, EarlyView.
ABSTRACT International environmental agreements are key instruments for addressing transboundary environmental problems, but treaty ratification remains uneven and clustered across countries despite the proliferation of multilateral treaties. While existing research has concentrated largely on domestic political‐economic determinants, less is known ...
Elif Korkmaz Tümer, Mehmet Güçlü
wiley   +1 more source

Hypoxia and the cytoskeleton

The Journal of Physiology, EarlyView.
Abstract figure legend Schematic outlining the activation of hypoxia‐sensitive pathways, the influence of hypoxia and associated pathways on the cytoskeleton, and the impact of these on disease progression. Abstract A highly‐regulated and dynamic cytoskeleton is vital for functional cellular physiology and the maintenance of homeostasis.
Darragh Flood, Cormac T. Taylor
wiley   +1 more source

A contribution to the anatomy of two rare cetacean species: The hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica)

The Anatomical Record, Volume 309, Issue 7, Page 1797-1820, July 2026.
Abstract The anatomical description of the hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica) remains largely unexplored, due to limited specimen availability and preservation challenges. This study employed digital imaging techniques, conventional histology, and computed tomography to provide visualization of
Jean‐Marie Graïc, Tommaso Gerussi, Bruno Cozzi, Rebecca M. Boys, Brian Chin Wing Kot, Matthew R. Perrott, Kane Fleury, Tabris Yik To Chung, Henry Chun Lok Tsui, Emma Burns, Trudi Webster, Stuart Hunter, Emma L. Betty, Odette Howarth, Carolina Loch, Sophie White, Steve Dawson, William Rayment, Ros Cole, Derek Cox, Tom Waterhouse, Hannah Hendriks, Anton van Helden, Muriel Johnstone, Ramari Oliphant Stewart, R. Ewan Fordyce, Karen A. Stockin   +26 more
wiley   +1 more source

Voting in Ruins: Examining the Effect of a Tornado on Voting Behavior Toward Coalition Government Parties

Economics &Politics, Volume 38, Issue 2, Page 446-459, July 2026.
ABSTRACT The electoral effects of natural disasters have gained increasing importance in recent research. This paper analyzes the impact of an unprecedentedly strong tornado on the electoral results of coalition government parties in the 2021 Czech general election.
Jakub Jusko, Peter Spáč
wiley   +1 more source

Top Manager Gender Differences in Inventory Management Under Business Obstacles

Journal of Business Logistics, Volume 47, Issue 3, July 2026.
ABSTRACT While the effect of gender on firm performance has been widely studied, its impact on operational policies remains underexplored. We examine the association between top managers' gender and inventory policy among small and medium‐sized enterprises (SMEs), where top managers play a central role in policy formulation and execution.
Nagihan Çömez‐Dolgan, Marah Abutouk, Merve Ozer‐Uysal, Lama Moussawi‐Haidar, Xuying Zhao   +4 more
wiley   +1 more source

Food Poverty and Early Childhood Development Across Food Insecurity Levels in Brazil

Maternal &Child Nutrition, Volume 22, Issue 3, July 2026.
ABSTRACT This cross‐sectional study investigated associations between food insecurity, food poverty, and early childhood development (ECD) among Brazilian children under 5 years of age, and explored whether the association between food poverty and ECD varied across food insecurity levels.
Micaela Rabelo Quadra, Fernanda Oliveira Meller, Antônio Augusto Schäfer, Leonardo Pozza Santos, André Demboski Dalpont, Gabriela Evaldt Espíndola, Gabriela Buccini   +6 more
wiley   +1 more source

Uma nota sobre a sequência de Tetrarrin

This study explores an extension of the Perrin sequence, defining the Tetrarrin sequence. Thus, we investigated Tetrarrin numbers and their mathematical relationships, allowing a deeper understanding of Perrin numbers. In this context, we analyze Binet?s
Vieira, Renata Passos Machado, Alves, Francisco Regis Vieira, Catarino, Paula Maria Machado Cruz   +2 more
core   +1 more source

Life History Parameters of Indian Ocean Humpback Dolphins Sousa plumbea Off KwaZulu‐Natal, South Africa

Marine Mammal Science, Volume 42, Issue 3, July 2026.
ABSTRACT For the effective conservation of coastal cetaceans, such as Indian Ocean humpback dolphin, Sousa plumbea, currently listed as “Endangered” by the International Union for the Conservation of Nature (IUCN), information on its life history is urgently required.
Stephanie Plön, Natasha Roussouw, Zianca Nolte, William P. Froneman   +3 more
wiley   +1 more source