Topics

PubMed Journals Articles About "Strategies Break Linear Scaling Relationships" RSS

21:24 EST 10th December 2019 | BioPortfolio

Strategies Break Linear Scaling Relationships PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Strategies Break Linear Scaling Relationships articles that have been published worldwide.

More Information about "Strategies Break Linear Scaling Relationships" on BioPortfolio

We have published hundreds of Strategies Break Linear Scaling Relationships news stories on BioPortfolio along with dozens of Strategies Break Linear Scaling Relationships Clinical Trials and PubMed Articles about Strategies Break Linear Scaling Relationships for you to read. In addition to the medical data, news and clinical trials, BioPortfolio also has a large collection of Strategies Break Linear Scaling Relationships Companies in our database. You can also find out about relevant Strategies Break Linear Scaling Relationships Drugs and Medications on this site too.

Showing "Strategies break linear scaling relationships" PubMed Articles 1–25 of 13,000+

Evolution of, and via, developmental plasticity: insights through the study of scaling relationships.

Scaling relationships emerge from differential growth of body parts relative to each other. As such, scaling relationships are at least in part the product of developmental plasticity. While some of the developmental genetic mechanisms underlying scaling relationships are starting to be elucidated, how these mechanisms evolve and give rise to the enormous diversity of allometric scaling observed in nature is less understood. Furthermore, developmental plasticity has itself been proposed as a mechanism that ...


Strategies that enforce linear payoff relationships under observation errors in Repeated Prisoner's Dilemma game.

The theory of repeated games analyzes the long-term relationship of interacting players and mathematically reveals the condition of how cooperation is achieved, which is not achieved in a one-shot game. In the repeated prisoner's dilemma (RPD) game with no errors, zero-determinant (ZD) strategies allow a player to unilaterally set a linear relationship between the player's own payoff and the opponent's payoff regardless of the strategy that the opponent implements. In contrast, unconditional strategies such...

Scaling Echocardiographic Cardiac Dimensions to Body Size: A Bayesian Analysis in Healthy Men and Women.

Proper scaling of cardiac dimensions is of paramount importance in making correct decisions in clinical cardiology. The usual normalization of cardiac dimensions to overall body size assumes an isometric relationship. We sought to investigate these relationships to obtain the best allometric coefficient (AC) for scaling.


Understanding reproductive allometry in turtles: A slippery "slope".

Measures of reproductive output in turtles are generally positively correlated with female body size. However, a full understanding of reproductive allometry in turtles requires logarithmic transformation of reproductive and body size variables prior to regression analyses. This allows for slope comparisons with expected linear or cubic relationships for linear to linear and linear to volumetric variables, respectively. We compiled scaling data using this approach from published and unpublished turtle studi...

A review of bubble break-up.

The coalescence and break-up of bubbles are important steps in many industrial processes. To date, most of the literature has been focussed on the coalescence process which has been studied using high speed cinematographic techniques. However, bubble break-up is equally important and requires further research. This review essentially details the break-up process and initially summarizes the different types of bubble deformation processes which lead to break-up. Break-up is considered in high and low turbule...

Ventilation Frequency Reveals the Roles of Exchange Surface Areas in Metabolic Scaling.

The surface area (SA) theory proposes that resting metabolic rate (RMR) scales with body mass, which parallels the exchange SA of organisms, and that a species with a larger scaling exponent of exchange SA has a larger scaling exponent of RMR. However, the effects of exchange SA on metabolic scaling may be eclipsed because oxygen transfer across the respiratory surface is determined not only by the exchange SA but also by ventilation. We hypothesize that the scaling of both gill surface area (GSA) and venti...

Combining embedded mean-field theory with linear-scaling density-functional theory.

We demonstrate the capability of embedded mean field theory (EMFT) within the linear-scaling density-functional theory code ONETEP, which enables DFT-in-DFT quantum embedding calculations on systems containing thousands of atoms at a fraction of the cost of a full calculation. We perform simulations on a wide range of systems from molecules to complex nanostructures to demonstrate the performance of our implementation with respect to accuracy and efficiency. This work paves the way for the application of th...

A linear-scaling method for non-covalent interactions: An efficient combination of absolutely localized molecular orbitals and a local random phase approximation approach.

A novel method for the accurate and efficient calculation of interaction energies in weakly-bound complexes comprised of a large number of molecules is presented. The new ALMO+RPAd method circumvents the prohibitive scaling of coupled cluster singles and doubles while still providing similar accuracy across a diverse range of weakly-bound chemical systems. Linear-scaling procedures for the Fock build are given utilising absolutely localised molecular orbitals (ALMOs), resulting in the a priori exclusion of ...

Density-dependent offspring interactions do not explain macroevolutionary scaling of adult size and offspring size.

Most lifeforms exhibit a correlated evolution of adult size (AS) and size at independence (SI), giving rise to AS-SI scaling relationships. Theory suggests that scaling arises because relatively large adults have relatively high reproductive output, resulting in strong density-dependent competition in early life, where large size at independence provides a competitive advantage to juveniles. The primary goal of our study is to test this Density Hypothesis, using large datasets that span the vertebrate tree ...

Global Implementation of Obesity Prevention Policies: a Review of Progress, Politics, and the Path Forward.

This review describes policy and regulatory strategies to prevent obesity and summarizes worldwide progress and impediments to scaling up strategies globally.

Relationships Between Tests of Strength, Power, and Speed and the 75-Yard Pursuit Run.

Post, BK, Dawes, JJ, and Lockie, RG. Relationships between tests of strength, power, and speed and the 75-yard pursuit run. J Strength Cond Res XX(X): 000-000, 2019-The 75-yard pursuit run (75 PR) was designed to simulate a foot pursuit for law enforcement officers (LEOs). Currently, there has been no analysis of contributing physiological factors to performance in this test. The study purpose was to determine the relationships between the 75 PR and tests of linear speed, change-of-direction (COD) speed, an...

The Life of an Insect Endosymbiont from the Cradle to the Grave.

Host-beneficial endosymbioses, which are formed when a microorganism takes up residence inside another cell and provides a fitness advantage to the host, have had a dramatic influence on the evolution of life. These intimate relationships have yielded the mitochondrion and the plastid (chloroplast) - the ancient organelles that in part define eukaryotic life - along with many more recent associations involving a wide variety of hosts and microbial partners. These relationships are often envisioned as stable...

Exploring the role of insulin signaling in relative growth: a case study on wing-body scaling in Lepidoptera.

Adult forms emerge from the relative growth of the body and its parts. Each appendage and organ have a unique pattern of growth that influences the size and shape it attains. This produces adult size relationships referred to as static allometries, which have received a great amount of attention in evolutionary and developmental biology. However, many questions remain unanswered, e.g. What sorts of developmental processes coordinate growth? And how do these processes change given variation in body size? It ...

Combining urban scaling and polycentricity to explain socio-economic status of urban regions.

The fast pace of urbanisation may benefit or be detrimental to the socio-economic status of urban areas. Understanding how the configuration of urban areas influences the socio-economic status of their inhabitants is of crucial importance for urban planning. In theory, urban scaling laws and polycentric development are two well-known concepts developed to increase our understanding of urbanisation and its socio-economic effects. In practice, however, they fall short to explain the socio-economic status of u...

Scaling laws in geo-located Twitter data.

Twitter has become an important platform for geo-spatial analyses, providing high-volume spatial data on a wide variety of social processes. Understanding the relationship between population density and Twitter activity is therefore of key importance. This study reports a systematic relationship between population density and Twitter use. Number of tweets, number of users and population per unit area are related by power law functions with exponents greater than one. These relations are consistent with each...

Functional ecology of congeneric variation in the leaf economics spectrum.

Variation in resource availability can lead to phenotypic plasticity in the traits comprising the worldwide leaf economics spectrum (LES), potentially impairing plant function and complicating the use of tabulated values for LES traits in ecological studies. We compared 14 Carex (Cyperaceae) species in a factorial experiment (unshaded/shaded × sufficient/insufficient P) to analyze how changes in the network of allometric scaling relationships among LES traits influenced growth under favorable and resource-...

Posttraumatic stress disorder and neurocognition: A bidirectional relationship?

There are well-known associations between PTSD and neurocognition, however, the direction of causality between the two is not well-understood. Neurocognition may alter risk of the development and maintenance of PTSD. Conversely, PTSD may pose risk to neurocognitive integrity. With cognitive and neurobiological conceptualizations of PTSD as a backdrop, this review will summarize results from several lines of research including preclinical, human analogue, retrospective, longitudinal, and treatment studies to...

An integrative Bayesian approach to matrix-based analysis in neuroimaging.

Understanding the correlation structure associated with brain regions is a central goal in neuroscience, as it informs about interregional relationships and network organization. Correlation structure can be conveniently captured in a matrix that indicates the relationships among brain regions, which could involve electroencephalogram sensors, electrophysiology recordings, calcium imaging data, or functional magnetic resonance imaging (FMRI) data-We call this type of analysis matrix-based analysis, or MBA. ...

EdgeScaping: Mapping the spatial distribution of pairwise gene expression intensities.

Gene co-expression networks (GCNs) are constructed from Gene Expression Matrices (GEMs) in a bottom up approach where all gene pairs are tested for correlation within the context of the input sample set. This approach is computationally intensive for many current GEMs and may not be scalable to millions of samples. Further, traditional GCNs do not detect non-linear relationships missed by correlation tests and do not place genetic relationships in a gene expression intensity context. In this report, we prop...

Leveraging brain-body scaling relationships for comparative studies.

In Horschler et al. (Anim Cognit 22(2):187-198, 2019), we found that two components of executive function (short-term memory and self-control) were strongly associated with estimated absolute brain weight across dog breeds, and argued that dogs present a powerful model for studying evolutionary links between cognition and neuroanatomy due to their extraordinary degree of intraspecific morphological variation. In a commentary on this work, Montgomery (Anim Cognit, 2019) raises concerns about the practice of...

Dominance, Sharing, and Assessment in an Iterated Hawk-Dove Game.

Animals use a wide variety of strategies to reduce or avoid aggression in conflicts over resources. These strategies range from sharing resources without outward signs of conflict to the development of dominance hierarchies, in which initial fighting is followed by the submission of subordinates. Although models have been developed to analyze specific strategies for resolving conflicts over resources, little work has focused on trying to understand why particular strategies are more likely to arise in certa...

Implementation of the full CCSDT electronic structure model with tensor decompositions.

We report a complete implementation of the coupled-cluster method with single, double, and triple excitations (CCSDT) where tensor decompositions are used to reduce its scaling and overall computational costs. For the decomposition of the electron repulsion integrals the standard density fitting (or Cholesky decomposition) format is used. The coupled-cluster single and double amplitudes are treated conventionally, and for the triple amplitudes tensor we employ the Tucker-3 compression formula, $t_{ijk}^{abc...

Deviations from Blob Scaling Theory for Active Brownian Filaments Confined Within Cavities.

Scaling arguments used to predict the radius of gyration of passive self-avoiding flexible polymers have been shown to hold for polymers under the influence of active fluctuations. In this Letter, we establish how the standard blob scaling theory representation of a polymer, capable of capturing the essential physics of passive polymers under a variety of settings, breaks down when dealing with active polymers under confinement. Using numerical simulations, we show how the predicted exponents associated to ...

Energy window stochastic density functional theory.

Linear scaling density functional theory is important for understanding electronic structure properties of nanometer scale systems. Recently developed stochastic density functional theory can achieve linear or even sublinear scaling for various electronic properties without relying on the sparsity of the density matrix. The basic idea relies on projecting stochastic orbitals onto the occupied space by expanding the Fermi-Dirac operator and repeating this for N stochastic orbitals. Often, a large number of s...

Do Emotional Labour Strategies Influence Emotional Exhaustion and Professional Identity or Vice Versa? Evidence from New Nurses.

The aim was to examine the reciprocal relationships of emotional labour strategies with emotional exhaustion and professional identity.


Quick Search