The Experts below are selected from a list of 13449 Experts worldwide ranked by ideXlab platform
Colleen Meuth - One of the best experts on this subject based on the ideXlab platform.
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jan feb 2018 committee on school finance permanent school fund
2018Co-Authors: Colleen MeuthAbstract:THURSDAY February 1, 2018 9 a.m. COMMITTEE ON SCHOOL FINANCE/PERMANENT SCHOOL FUND - Room 1-104 Members: David Bradley, chair; Tom Maynard, vice chair; Lawrence A. Allen, Jr.; Patricia Hardy; Ken Mercer. A quorum of the State Board of Education may attend the committee meeting and discuss items on the com
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november 2017 committee on school finance permanent school fund
2017Co-Authors: Colleen MeuthAbstract:THURSDAY November 9, 2017 9 a.m. COMMITTEE ON SCHOOL FINANCE/PERMANENT SCHOOL FUND - Room 1-104 Members: David Bradley, chair; Tom Maynard, vice chair; Lawrence A. Allen, Jr.; Patricia Hardy; Ken Mercer. A quorum of the State Board of Education may attend the committee meeting and discuss items on the committ
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september 2017 committee on school finance permanent school fund
2017Co-Authors: Colleen MeuthAbstract:THURSDAY September 14, 2017 9 a.m. COMMITTEE ON SCHOOL FINANCE/PERMANENT SCHOOL FUND - Room 1-104 Members: David Bradley, Chair; Tom Maynard, Vice Chair; Lawrence A. Allen, Jr.; Patricia Hardy; Ken Mercer. A quorum of the State Board of Education may attend the committee meeting and discuss items on the c
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april 2017 committee on school finance permanent school fund
2017Co-Authors: Colleen MeuthAbstract:THURSDAY April 20, 2017 9 a.m. COMMITTEE ON SCHOOL FINANCE/PERMANENT SCHOOL FUND - Room 1-104 Members: David Bradley, Chair; Tom Maynard, Vice Chair; Lawrence A. Allen, Jr.; Patricia Hardy; Ken Mercer. A quorum of the State Board of Education may attend the committee meeting and discuss items on the com
Loretto Contreras‐porcia - One of the best experts on this subject based on the ideXlab platform.
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Genetic and morphological differentiation of Porphyra and Pyropia species (Bangiales, Rhodophyta) coexisting in a rocky intertidal in Central Chile
Journal of Phycology, 2019Co-Authors: Andrés Meynard, Javier Zapata, Nicolás Salas, Claudia Betancourtt, Gabriel Pérez‐lara, Francisco Castañeda, María Eliana Ramírez, Cristian Bulboa Contador, Marie‐laure Guillemin, Loretto Contreras‐porciaAbstract:A recent molecular taxonomic study along the Chilean coast (18° S–53° S) described 18 candidate species of bladed Bangiales of which only two were formally described. Few studies focused on local genetic and morphological diversity of bladed Bangiales and attempted to determine their intertidal distribution in contrasting habitats, and none were performed in Chile. To delimit intertidal distributions of genetic species, 66 samples of bladed Bangiales were collected at Maitencillo (32° S) in four zones: a rocky platform, a rocky wall, and two boulders zones surrounded by sandy and rocky bottoms, respectively. These samples were identified based on sequences of the mitochondrial COI and chloroplast rbcL markers. We also collected 87 specimens for morphological characterization of the most common species, rapidly assessing their putative species identity using newly developed species‐diagnostic (PCR‐RFLP) markers. Eight microscopic and two macroscopic morphological traits were measured. We described and named three of four species that predominate in Maitencillo (including Pyropia orbicularis): Pyropia variabilis Zapata, Meynard, Ramírez, Contreras‐Porcia, sp. nov., Porphyra luchea Meynard, Ramírez, Contreras‐Porcia sp. nov., and Porphyra longissima Meynard, Ramírez, Contreras‐Porcia, sp. nov. With the exception of Po. longissima restricted to boulders surrounded by sandy bottom, and a morphotype of Py. variabilis restricted to rocky walls, the other species/morphotypes have overlapping intertidal distributions. Except for Po. longissima, which is clearly differentiated morphologically (longest and thinnest blades), we conclude that morphology is not sufficient to differentiate bladed Bangiales. Our findings underscore the importance of refining our knowledge of intrinsic and environmental determinants on the distribution of bladed Bangiales.
Andrés Meynard - One of the best experts on this subject based on the ideXlab platform.
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Genetic and morphological differentiation of Porphyra and Pyropia species (Bangiales, Rhodophyta) coexisting in a rocky intertidal in Central Chile
Journal of Phycology, 2019Co-Authors: Andrés Meynard, Javier Zapata, Nicolás Salas, Claudia Betancourtt, Gabriel Pérez‐lara, Francisco Castañeda, María Eliana Ramírez, Cristian Bulboa Contador, Marie‐laure Guillemin, Loretto Contreras‐porciaAbstract:A recent molecular taxonomic study along the Chilean coast (18° S–53° S) described 18 candidate species of bladed Bangiales of which only two were formally described. Few studies focused on local genetic and morphological diversity of bladed Bangiales and attempted to determine their intertidal distribution in contrasting habitats, and none were performed in Chile. To delimit intertidal distributions of genetic species, 66 samples of bladed Bangiales were collected at Maitencillo (32° S) in four zones: a rocky platform, a rocky wall, and two boulders zones surrounded by sandy and rocky bottoms, respectively. These samples were identified based on sequences of the mitochondrial COI and chloroplast rbcL markers. We also collected 87 specimens for morphological characterization of the most common species, rapidly assessing their putative species identity using newly developed species‐diagnostic (PCR‐RFLP) markers. Eight microscopic and two macroscopic morphological traits were measured. We described and named three of four species that predominate in Maitencillo (including Pyropia orbicularis): Pyropia variabilis Zapata, Meynard, Ramírez, Contreras‐Porcia, sp. nov., Porphyra luchea Meynard, Ramírez, Contreras‐Porcia sp. nov., and Porphyra longissima Meynard, Ramírez, Contreras‐Porcia, sp. nov. With the exception of Po. longissima restricted to boulders surrounded by sandy bottom, and a morphotype of Py. variabilis restricted to rocky walls, the other species/morphotypes have overlapping intertidal distributions. Except for Po. longissima, which is clearly differentiated morphologically (longest and thinnest blades), we conclude that morphology is not sufficient to differentiate bladed Bangiales. Our findings underscore the importance of refining our knowledge of intrinsic and environmental determinants on the distribution of bladed Bangiales.
John M Mcnamara - One of the best experts on this subject based on the ideXlab platform.
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the parental investment models of Maynard smith a retrospective and prospective view
Animal Behaviour, 2013Co-Authors: Alasdair I. Houston, Tamas Szekely, John M McnamaraAbstract:In his paper ‘Parental investment: a prospective analysis’, Maynard Smith (1977, Animal Behaviour, 25, 1–9) introduced a game-theoretic approach to understanding the evolution of parental behaviour and addressed the broad issue of which sex should provide care for the young. This paper was important in that it introduced the use of game theory to the analysis of parental care. It also stimulated empirical work on care. We identify progress that has been made since the publication of the paper. In particular, although Model 2 of Maynard Smith (1977) has been used in several textbooks to explain the evolution of care, subsequent work has shown that this model is not built on a consistent view of how parental care influences future reproductive success through its effect on the sex ratio. Several models incorporate a consistent account in which opportunities to remate after desertion emerge from the analysis, rather than being specified in advance. More generally, it is not possible to consider parental care in isolation from factors such as paternity, mating preferences and mate choice behaviour. We identify various theoretical and empirical issues in the area of parental care research that we believe deserve further study if our understanding of care decisions is to advance. Taken together, the landmark paper of Maynard Smith (1977) stimulated new theoretical and empirical studies in parental care research and led to new insights into the behavioural interactions between males and females.
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John Maynard Smith and the importance of consistency in evolutionary game theory
Biology and Philosophy, 2006Co-Authors: Alasdair I. Houston, John M McnamaraAbstract:John Maynard Smith was the founder of evolutionary game theory. He has also been the major influence on the direction of this field, which now pervades behavioural ecology and evolutionary biology. In its original formulation the theory had three components: a set of strategies, a payoff structure, and a concept of evolutionary stability. These three key components are still the basis of the theory, but what is assumed about each component is often different to the original assumptions. We review modern approaches to these components. We emphasis that if a game is considered in isolation, and arbitrary payoffs are assumed, then the payoffs may not be consistent with other components of the system which are not modelled. Modelling the whole system, including not only the focal game, but also the future behaviour of the players and the behaviour of other population members, allows a consistent model to be constructed. We illustrate this in the case of two models of parental care, showing how linking a focal game to other aspects of the system alters what is predicted.
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do parents make independent decisions about desertion
Animal Behaviour, 2002Co-Authors: John M Mcnamara, Alasdair I. Houston, Tamas Szekely, James N WebbAbstract:Maynard Smith (1977) provided the first game-theoreticalmodels of parental care. In his Model 2, Maynard Smithassumed that each parent had to choose whether to carefor the young or desert. Each parent made its choicewithout knowing the choice of its partner. This scenariois usually referred to as simultaneous choice, but it is thefact that choices are made independently, rather thantheir timing, that is central to the analysis of the game.The assumption that choices are independent is made inmost other models of parental care (e.g. Grafen & Sibly1978; Maynard Smith 1982; Houston & Davies 1985;Yamamura & Tsuji 1993; Balshine-Earn & Earn 1997;Webb et al. 1999). In this commentary, we examine theempirical evidence on whether members of a breedingpair do make their care decisions independently of oneanother.When all breeding pairs within a population adoptthe same pattern of care (for example, all males desertand all females care) it is trivially true that the decisionsof members of a pair are independent. In some popula-tions, however, there can be more than one pattern ofcare (Sze´kely et al. 1996). For example, in the popula-tion of the penduline tit,
Helen Piel - One of the best experts on this subject based on the ideXlab platform.
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Complicating the Story of Popular Science: John Maynard Smith’s “Little Penguin” on The Theory of Evolution
Journal of the History of Biology, 2019Co-Authors: Helen PielAbstract:Popular science writing has received increasing interest, especially in its relation to professional science. I extend the current scholarly focus from the nineteenth to the twentieth century by providing a microhistory of the early popular writings of evolutionary biologist John Maynard Smith (1920–2004). Linking them to the state of evolutionary biology as a professional science as well as Maynard Smith’s own professional standing, I examine the interplay between author, text and audiences. In particular, I focus on Maynard Smith’s book The Theory of Evolution (Penguin 1958) and show how he used it to both promote neo-Darwinism and advocate the utility of mathematics in biology. Following in the footsteps of Charles Darwin and David Lack, Maynard Smith was a science communicator blurring the lines between genres (popular, professional, textbook) and audiences (expert and non-expert) while contributing to ongoing discussions within and on the profession of evolutionary biology around the Darwin-Wallace centenary.
