In this paper, we consider the concepts of evolutionarily stable strategy (ESS), neighborhood invader strategy (NIS) and global invader strategy (GIS) in single species with frequency-dependent interactions. We find some general relationships among the three concepts in matrix games. The main conclusion is that ESS and NIS are equivalent to each other and are both equivalent to local superiority; a strategy with global superiority must be a GIS; a GIS may not be equivalent to its global superiority in games with more than two players; and in any two-player matrix game a GIS is just equivalent to its global superiority. In two-player games, globally asymptotic stability in the replicator dynamics has also been shown. Equivalent conditions for the three concepts stated by payoff comparisons are given and are applied to examples involved.
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http://dx.doi.org/10.1007/s00285-012-0516-y | DOI Listing |
J Thorac Cardiovasc Surg
January 2025
Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Suita City, Osaka, 565-0871, Japan.
Objective: To evaluate the feasibility of and long-term survival with combined organ resection for esophageal cancer (EC).
Background: The optimal treatment strategy for EC that is invading adjacent organs is not established.
Methods: Ninety patients with EC invading adjacent organs who underwent combined organ resection after induction treatments during 2003-2023 in our institute were eligible for the study.
Microorganisms
December 2024
Department Poultry Health, Royal GD, 7418 EZ Deventer, The Netherlands.
Some strains of can cause spondylitis and bacterial osteomyelitis. Translocation and bacteremia are pivotal to the pathogenesis and clinical disease. Virulence typing to distinguish extra-intestinal disease of lesion from cloacal strains remains difficult.
View Article and Find Full Text PDFCancers (Basel)
January 2025
Department of Neurosurgery, Institute of Science Tokyo Hospital, Tokyo 1130034, Japan.
: Resection of tumors invading the cavernous sinus (CS) carries a risk of injury to the cranial nerves and internal carotid artery. Therefore, radical surgery involving lesions around the CS remains challenging, especially for lesions invading the CS, optic sheath, and oculomotor cave. Here, we describe a surgical strategy for meningiomas invading these structures and report on the clinical outcomes.
View Article and Find Full Text PDFBiology (Basel)
December 2024
Smithsonian Tropical Research Institute, Ciudad de Panamá 0843-03092, Panama.
Biological invasions occur when organisms are moved from their native range and introduced into new areas, where they can spread and become a potential risk for native organisms. Invasive species are well recorded for vertebrates, plants and a number of invertebrates. A taxa for which there is a lack of information in some countries are arachnids, and this is the case of reports on introduced species in Panama.
View Article and Find Full Text PDFSurgery
January 2025
Department of Biomedical Sciences, Humanitas University, Milan, Italy; Department of Hepatobiliary & General Surgery, IRCCS Humanitas Research Hospital, Milan, Italy. Electronic address:
Background: Communicating vessels among hepatic veins in patients with tumors invading/compressing hepatic veins at their caval confluence facilitate new surgical solutions. Although their recognition by intraoperative ultrasound has been described, the possibility of preoperative detection still remains uncertain. We aimed to develop a model to predict their presence before surgery.
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