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Emergence complexity theory

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https://www.readbyqxmd.com/read/28822288/two-sides-of-the-coin-part-2-colloid-and-surface-science-meets-real-biointerfaces
#1
Barry W Ninham, Kåre Larsson, Pierandrea Lo Nostro
Part 1 revisited developments in lipid and surfactant self assembly over the past 40 years [1]. New concepts emerged. Here we explore how these developments can be used to make sense of and bring order to a range of complex biological phenomena. Together with Part 1, this contribution is a fundamental revision of intuition at the boundaries of Colloid Science and Biological interfaces from a perspective of nearly 50 years. We offer new insights on a unified treatment of self assembly of lipids, surfactants and proteins in the light of developments presented in Part 1...
August 5, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28819880/theoretical-analysis-of-c-f-bond-cleavage-mediated-by-cob-i-alamin-based-structures
#2
D Cortés-Arriagada, A Toro-Labbe, J R Mora, L Rincón, R Mereau, F J Torres
In the present work, C-F bond cleavage mediated by the super-reduced form of cobalamin (i.e., Co(I)Cbl) was theoretically studied at the ONIOM(BP86/6-311++G(d,p):PM6) + SMD level of theory. Dispersion effects were introduced by employing Grimme's empirical dispersion at the ONIOM(BP86-D/6-311++G(d,p):PM6) + SMD level. In the first stage of the study, cobalamin was characterized in terms of the coordination number of the central cobalt atom. The ONIOM(BP86/6-311++G(d,p):PM6) results showed that the base-off form of the system is slightly more stable than its base-on counterpart (ΔE = E base-off - E base-on ~ -2 kcal/mol)...
August 17, 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28812843/collaboration-between-researchers-and-knowledge-users-in-health-technology-assessment-a-qualitative-exploratory-study
#3
Mylène Tantchou Dipankui
BACKGROUND: Collaboration between researchers and knowledge users is increasingly promoted because it could enhance more evidence-based decision-making and practice. These complex relationships differ in form, in the particular goals they are trying to achieve, and in whom they bring together. Although much is understood about why partnerships form, relatively little is known about how collaboration works: how the collaborative process is shaped through the partners' interactions, especially in the field of health technology assessment (HTA)? This study aims at addressing this gap in the literature in the specific context of HTA...
December 16, 2016: International Journal of Health Policy and Management
https://www.readbyqxmd.com/read/28812678/the-multilayer-nature-of-ecological-networks
#4
Shai Pilosof, Mason A Porter, Mercedes Pascual, Sonia Kéfi
Although networks provide a powerful approach to study a large variety of ecological systems, their formulation does not typically account for multiple interaction types, interactions that vary in space and time, and interconnected systems such as networks of networks. The emergent field of 'multilayer networks' provides a natural framework for extending analyses of ecological systems to include such multiple layers of complexity, as it specifically allows one to differentiate and model 'intralayer' and 'interlayer' connectivity...
March 23, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812318/the-development-and-flexibility-of-gaze-alternations-in-bonobos-and-chimpanzees
#5
Kelsey Lucca, Evan L MacLean, Brian Hare
Infants' early gaze alternations are one of their first steps towards a sophisticated understanding of the social world. This ability, to gaze alternate between an object of interest and another individual also attending to that object, has been considered foundational to the development of many complex social-cognitive abilities, such as theory of mind and language. However, to understand the evolution of these abilities, it is important to identify whether and how gaze alternations are used and develop in our closest living relatives, bonobos (Pan paniscus) and chimpanzees (Pan troglodytes)...
August 15, 2017: Developmental Science
https://www.readbyqxmd.com/read/28805402/middle-ground-approach-to-paradox-within-and-between-culture-examination-of-the-creative-benefits-of-paradoxical-frames
#6
Angela K-Y Leung, Shyhnan Liou, Ella Miron-Spektor, Brandon Koh, David Chan, Roni Eisenberg, Iris Schneider
Thriving in increasingly complex and ambiguous environments requires creativity and the capability to reconcile conflicting demands. Recent evidence with Western samples has suggested that paradoxical frames, or mental templates that encourage individuals to recognize and embrace contradictions, could produce creative benefits. We extended the timely, but understudied, topic by studying the nuances of for whom and why creative advantages of paradoxical frames emerge. We suggest that people endorsing a middle ground approach are less likely to scrutinize conflict and reconcile with integrative solutions, thus receiving less creative benefits of paradoxical frames...
August 14, 2017: Journal of Personality and Social Psychology
https://www.readbyqxmd.com/read/28793374/pain-assessment-by-emergency-nurses-at-triage-in-the-emergency-department-a-qualitative-study
#7
Marilène Vuille, Maryline Foerster, Eliane Foucault, Olivier Hugli
AIM: To investigate the assessment of pain intensity in the specific context of triage. BACKGROUND: Acute pain affects most patients admitted in emergency departments (ED) but pain relief in this setting remains insufficient. Evaluation of pain and its treatment at the time of patient triage expedites the administration of analgesia, but may be awkward at this time-pressured moment. The assessment of pain intensity by a validated pain scale is a critical initial step, and a patient's self-reporting is widely considered as the key to effective pain management...
August 9, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28792412/evolutionary-public-health-introducing-the-concept
#8
REVIEW
Jonathan C K Wells, Randolph M Nesse, Rebecca Sear, Rufus A Johnstone, Stephen C Stearns
The emerging discipline of evolutionary medicine is breaking new ground in understanding why people become ill. However, the value of evolutionary analyses of human physiology and behaviour is only beginning to be recognised in the field of public health. Core principles come from life history theory, which analyses the allocation of finite amounts of energy between four competing functions-maintenance, growth, reproduction, and defence. A central tenet of evolutionary theory is that organisms are selected to allocate energy and time to maximise reproductive success, rather than health or longevity...
July 29, 2017: Lancet
https://www.readbyqxmd.com/read/28791282/the-global-health-service-partnership-an-academic-clinical-partnership-to-build-nursing-and-medical-capacity-in-africa
#9
REVIEW
Eileen M Stuart-Shor, Elizabeth Cunningham, Laura Foradori, Elizabeth Hutchinson, Martha Makwero, Jill Smith, Jane Kasozi, Esther M Johnston, Aliasgar Khaki, Elisa Vandervort, Fabiola Moshi, Vanessa B Kerry
The World Health Organization estimates a global deficit of about 12.9 million skilled health professionals (midwives, nurses, and physicians) by 2035. These shortages limit the ability of countries, particularly resource-constrained countries, to deliver basic health care, to respond to emerging and more complex needs, and to teach, graduate, and retain their future health professionals-a vicious cycle that is perpetuated and has profound implications for health security. The Global Health Service Partnership (GHSP) is a unique collaboration between the Peace Corps, President's Emergency Plan for AIDS Relief, Seed and host-country institutions, which aims to strengthen the breadth and quality of medical and nursing education and care delivery in places with dire shortages of health professionals...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/28777957/understanding-neural-circuit-development-through-theory-and-models
#10
REVIEW
Leonidas Ma Richter, Julijana Gjorgjieva
How are neural circuits organized and tuned to achieve stable function and produce robust behavior? The organization process begins early in development and involves a diversity of mechanisms unique to this period. We summarize recent progress in theoretical neuroscience that has substantially contributed to our understanding of development at the single neuron, synaptic and network level. We go beyond classical models of topographic map formation, and focus on the generation of complex spatiotemporal activity patterns, their role in refinements of particular circuit features, and the emergence of functional computations...
August 1, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28769102/relaxation-oscillations-and-ultrafast-emission-pulses-in-a-disordered-expanding-polariton-condensate
#11
Maciej Pieczarka, Marcin Syperek, Łukasz Dusanowski, Andrzej Opala, Fabian Langer, Christian Schneider, Sven Höfling, Grzegorz Sęk
Semiconductor microcavities are often influenced by structural imperfections, which can disturb the flow and dynamics of exciton-polariton condensates. Additionally, in exciton-polariton condensates there is a variety of dynamical scenarios and instabilities, owing to the properties of the incoherent excitonic reservoir. We investigate the dynamics of an exciton-polariton condensate which emerges in semiconductor microcavity subject to disorder, which determines its spatial and temporal behaviour. Our experimental data revealed complex burst-like time evolution under non-resonant optical pulsed excitation...
August 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28760864/reconfiguration-of-brain-network-architectures-between-resting-state-and-complexity-dependent-cognitive-reasoning
#12
Luke J Hearne, Luca Cocchi, Andrew Zalesky, Jason B Mattingley
Our capacity for higher cognitive reasoning has a measureable limit. This limit is thought to arise from the brain's capacity to flexibly reconfigure interactions between spatially distributed networks. Recent work, however, has suggested that reconfigurations of task-related networks are modest when compared with intrinsic 'resting state' network architecture. Here we combined resting state and task-driven functional magnetic resonance imaging to examine how flexible, task-specific reconfigurations associated with increasing reasoning demands are integrated within a stable intrinsic brain topology...
July 31, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28752823/prospects-and-applications-near-ferroelectric-quantum-phase-transitions-a-key-issues-review
#13
Premala Chandra, Gilbert G Lonzarich, Stephen E Rowley, J F Scott
The emergence of complex and fascinating states of quantum matter in the neighborhood of zero temperature phase transitions suggests that such quantum phenomena should be studied in a variety of settings. Advanced technologies of the future may be fabricated from materials where the cooperative behavior of charge, spin and current can be manipulated at cryogenic temperatures. The progagating lattice dynamics of displacive ferroelectrics make them appealing for the study of quantum critical phenomena that is characterized by both space- and time-dependent quantities...
July 28, 2017: Reports on Progress in Physics
https://www.readbyqxmd.com/read/28750628/what-works-for-whom-in-the-management-of-diabetes-in-people-living-with-dementia-a-realist-review
#14
Frances Bunn, Claire Goodman, Peter Reece Jones, Bridget Russell, Daksha Trivedi, Alan Sinclair, Antony Bayer, Greta Rait, Jo Rycroft-Malone, Christopher Burton
BACKGROUND: Dementia and diabetes mellitus are common long-term conditions and co-exist in a large number of older people. People living with dementia (PLWD) may be less able to manage their diabetes, putting them at increased risk of complications such as hypoglycaemia. The aim of this review was to identify key mechanisms within different interventions that are likely to improve diabetes outcomes in PLWD. METHODS: This is a realist review involving scoping of the literature and stakeholder interviews to develop theoretical explanations of how interventions might work, systematic searches of the evidence to test and develop the theories and their validation with a purposive sample of stakeholders...
July 28, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28750568/antipsychotic-induced-tardive-dyskinesia-from-biological-basis-to-clinical-management
#15
Haitham Salem, Teresa Pigott, Xiang Y Zhang, Cristian P Zeni, Antonio L Teixeira
Tardive dyskinesia (TD) is a chronic and disabling movement disorder with a complex pathophysiological basis. A significant percentage of patients does not receive correct diagnosis, resulting in delayed or inaccurate treatment and poor outcome. Therefore, there is a critical need for prompt recognition, implementation of efficacious treatment regimens and long-term follow up of patients with TD. Areas covered: The current paper provides an overview of emerging data concerning proposed pathophysiology theories, epidemiology, risk factors, and therapeutic strategies for TD...
August 3, 2017: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/28744976/patient-experiences-of-adjusting-to-life-in-the-first-2%C3%A2-years-after-bariatric-surgery-a-qualitative-study
#16
Y Graham, C Hayes, P K Small, K Mahawar, J Ling
There is currently little research into the experiences of those who have undergone bariatric surgery, or how surgery affects their lives and social interactions. Adopting a constructivist grounded theory methodological approach with a constant comparative analytical framework, semi-structured interviews were carried out with 18 participants (11 female, 7 male) who had undergone permanent bariatric surgical procedures 5-24 months prior to interview. Findings revealed that participants regarded social encounters after bariatric surgery as underpinned by risk...
July 26, 2017: Clinical Obesity
https://www.readbyqxmd.com/read/28734836/criticality-in-the-brain-a-synthesis-of-neurobiology-models-and-cognition
#17
REVIEW
Luca Cocchi, Leonardo L Gollo, Andrew Zalesky, Michael Breakspear
Cognitive function requires the coordination of neural activity across many scales, from neurons and circuits to large-scale networks. As such, it is unlikely that an explanatory framework focused upon any single scale will yield a comprehensive theory of brain activity and cognitive function. Modelling and analysis methods for neuroscience should aim to accommodate multiscale phenomena. Emerging research now suggests that multi-scale processes in the brain arise from so-called critical phenomena that occur very broadly in the natural world...
July 19, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28734094/moving-alcohol-prevention-research-forward-part-i-introducing-a-complex-systems-paradigm
#18
Yorghos Apostolopoulos, Michael K Lemke, Adam E Barry, Kristen Hassmiller Lich
BACKGROUND AND AIMS: The drinking environment is a complex system consisting of a number of heterogeneous, evolving, and interacting components, which exhibit circular causality and emergent properties. These characteristics reduce the efficacy of commonly used research approaches, which typically do not account for the underlying dynamic complexity of alcohol consumption and the interdependent nature of diverse factors influencing misuse over time. We use alcohol misuse among college students in the United States as an example for framing our argument for a complex systems paradigm...
July 22, 2017: Addiction
https://www.readbyqxmd.com/read/28733462/human-t-cell-immunosenescence-and-inflammation-in-aging
#19
REVIEW
Arsun Bektas, Shepherd H Schurman, Ranjan Sen, Luigi Ferrucci
The aging process is driven by a finite number of inter-related mechanisms that ultimately lead to the emergence of characteristic phenotypes, including increased susceptibility to multiple chronic diseases, disability, and death. New assays and analytical tools have become available that start to unravel some of these mechanisms. A prevailing view is that aging leads to an imbalance between stressors and stress-buffering mechanisms that causes loss of compensatory reserve and accumulation of unrepaired damage...
July 21, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28731706/automated-construction-of-molecular-active-spaces-from-atomic-valence-orbitals
#20
Elvira R Sayfutyarova, Qiming Sun, Garnet Kin-Lic Chan, Gerald Knizia
We introduce the atomic valence active space (AVAS), a simple and well-defined automated technique for constructing active orbital spaces for use in multi-configuration and multi-reference (MR) electronic structure calculations. Concretely, the technique constructs active molecular orbitals capable of describing all relevant electronic configurations emerging from a targeted set of atomic valence orbitals (e.g., the metal d orbitals in a redcoordination complex). This is achieved via a linear transformation of the occupied and unoccupied orbital spaces from an easily obtainable single-reference wavefunction (such as from a Hartree-Fock or Kohn-Sham calculations) based on projectors to targeted atomic valence orbitals...
July 21, 2017: Journal of Chemical Theory and Computation
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