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"system theory"

J S Rojas-Arias, B A Rodríguez, H Vinck-Posada
Dipolaritons are quasiparticles that arise in coupled quantum wells embedded in a microcavity, they are a superposition of a photon, a direct exciton and an indirect exciton. We propose the existence of dipolaritons in a system of two coupled quantum dots inside a microcavity in direct analogy with the quantum well case and find that, despite some similarities, dipolaritons in quantum dots have different properties and can lead to true dark polariton states. We use a finite system theory to study the effects of the magnetic field on the system, including the emission, and find that it can be used as a control parameter of the properties of excitons and dipolaritons, and the overall magnetic behaviour of the structure...
October 21, 2016: Journal of Physics. Condensed Matter: An Institute of Physics Journal
Rachel H Farr
Controversy continues to surround parenting by lesbian and gay (LG) adults and outcomes for their children. As sexual minority parents increasingly adopt children, longitudinal research about child development, parenting, and family relationships is crucial for informing such debates. In the psychological literature, family systems theory contends that children's healthy development depends upon healthy family functioning more so than family structure. From the framework of family stress theory, it was expected that longitudinal outcomes for school-age children adopted in infancy could be distinct among those with same-sex versus other-sex parents (N = 96 families)...
October 20, 2016: Developmental Psychology
Vitaly K Koltover
There are two generally known concepts in biology of aging. Accordingly to the first one, there is a program of aging. The alternative concept advocates that aging proceeds stochastically. In this area of research, free radical-theory of aging, which was put forward by Denham Harman in fifties of XXth century, has determined the most heuristic line. The goal of this review is to demonstrate how the aging program and the aging stochastics are united on the basis of the systems theory of reliability. On this basis, universal features of aging, such as the exponential growth of mortality rate with time and correlation of longevity with the species-specific resting metabolism, are naturally explained...
October 9, 2016: Current Aging Science
Jianjiang Cui, Zixuan Liu, Long Xu
As referee's decisions are made artificially in traditional table tennis matches, many factors in a match, such as fatigue and subjective tendency, may lead to unjust decision. Based on finite state machine (FSM), this paper presents a model for table tennis referee regulation to substitute manual decisions. In this model, the trajectory of the ball is recorded through a binocular visual system while the complete rules extracted from the International Table Tennis Federation (ITTF) rules are described based on FSM...
October 13, 2016: Journal of Sports Sciences
Elisabeth Coyne, Karin B Dieperink
BACKGROUND: The nurses' ability to provide supportive care to the patient and the family is influenced by their family assessment skills, which provide them with understanding of the family needs and strengths. When a patient is diagnosed with cancer, it is the family who provides the long-term support for the patient, and nurses need to understand the family needs in order to provide holistic care. OBJECTIVE: The objective of the present study is to understand the factors that influence nurses' family assessment practices in adult oncology setting in Denmark and Australia...
October 10, 2016: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
David G Angeler
This paper builds a bridge between heavy metal music, complexity theory and sustainability science to show the potential of the (auditory) arts to inform different aspects of complex systems of people and nature. The links are described along different dimensions. This first dimension focuses on the scientific aspect of heavy metal. It uses complex adaptive systems theory to show that the rapid diversification and evolution of heavy metal into multiple subgenres leads to a self-organizing and resilient socio-musicological system...
2016: SpringerPlus
Sarah Kearney, Loksee Leung, Andrew Joyce, Debbie Ollis, Celia Green
Issue addressed: Our Watch led a complex 12-month evaluation of a whole school approach to Respectful Relationships Education (RRE) implemented in 19 schools. RRE is an emerging field aimed at preventing gender-based violence. This paper will illustrate how from an implementation science perspective, the evaluation was a critical element in the change process at both a school and policy level.Methods: Using several conceptual approaches from systems science, the evaluation sought to examine how the multiple systems layers - student, teacher, school, community and government - interacted and influenced each other...
October 6, 2016: Health Promotion Journal of Australia
R K W Schwarting, S Busse
When parts of the brain suffer from damage, certain functional deficits or impairments are the expected and typical outcome. A myriad of examples show such negative consequences, which afford the daily tasks of neurologists, neuropsychologists, and also behavioral neuroscientists working with experimental brain lesions. Compared to lesion-induced deficits, examples for functional enhancements or facilitation after brain lesions are rather rare and usually not well studied. Here, the mammalian hippocampus seems to provide an exception, since substantial evidence shows that its damage can have facilitatory behavioral effects under certain conditions...
September 28, 2016: Behavioural Brain Research
Inga Baranauskaitė-Fedorova, Jolanta Dvarionienė, Vladimir A Nikiforov
Investigation on the sources, discharges and related risks for the environment of the pharmaceutical substance (PhS) diclofenac (DCF) was performed in Lithuania, a country of the Baltic Sea region, for the first time. The investigation only refers to DCF as a PhS for human use; emissions from animal husbandry were not considered. In the first stage of the research, the main sources and pathways of DCF via substance flow analysis were identified within the country. During the second stage, DCF flows along the wastewater treatment plants (WWTPs) in two different cities were measured in order to assess the current levels of pharmaceutical residues in the environment...
September 2016: Water Science and Technology: a Journal of the International Association on Water Pollution Research
Wang-Ren Qiu, Quan-Shu Zheng, Bi-Qian Sun, Xuan Xiao
Predicting phosphorylation protein is a challenging problem, particularly when query proteins have multi-label features meaning that they may be phosphorylated at two or more different type amino acids. In fact, human protein usually be phosphorylated at serine, threonine and tyrosine. By introducing the "multi-label learning" approach, a novel predictor has been developed that can be used to deal with the systems containing both single- and multi-label phosphorylation protein. Here we proposed a predictor called Multi-iPPseEvo by (1) incorporating the protein sequence evolutionary information into the general pseudo amino acid composition (PseAAC) via the grey system theory, (2) balancing out the skewed training datasets by the asymmetric bootstrap approach, and (3) constructing an ensemble predictor by fusing an array of individual random forest classifiers thru a voting system...
September 29, 2016: Molecular Informatics
Christoph Hold, Sonja Billerbeck, Sven Panke
Enzymatic reaction networks are unique in that one can operate a large number of reactions under the same set of conditions concomitantly in one pot, but the nonlinear kinetics of the enzymes and the resulting system complexity have so far defeated rational design processes for the construction of such complex cascade reactions. Here we demonstrate the forward design of an in vitro 10-membered system using enzymes from highly regulated biological processes such as glycolysis. For this, we adapt the characterization of the biochemical system to the needs of classical engineering systems theory: we combine online mass spectrometry and continuous system operation to apply standard system theory input functions and to use the detailed dynamic system responses to parameterize a model of sufficient quality for forward design...
2016: Nature Communications
(no author information available yet)
The present study is primarily aimed at an audience of evolutionary biologists in the broad sense for Parts 1-3, as well as at scientists from other professional disciplines looking for new approaches to explore phenomena in nature. However, the content is in general not written as technical text or filled with equations that make it utterly incomprehensible for 'normal' people, although they would have to skip strictly professional biochemical and biological terms that are a constituent part of the evidence in a scientific sense...
2016: Studies in Health Technology and Informatics
Srdjan Kesić
This study explores the conceptual history of systems biology and its impact on philosophical and scientific conceptions of reductionism, antireductionism and emergence. Development of systems biology at the beginning of 21st century transformed biological science. Systems biology is a new holistic approach or strategy how to research biological organisms, developed through three phases. The first phase was completed when molecular biology transformed into systems molecular biology. Prior to the second phase, convergence between applied general systems theory and nonlinear dynamics took place, hence allowing the formation of systems mathematical biology...
September 2016: Saudi Journal of Biological Sciences
David Sloan Wilson
The target article is a major step toward integrating the biological and human-related sciences. It is highly relevant to economics and public policy formulation in the real world, in addition to its basic scientific import. My commentary covers a number of points, including avoiding an excessively narrow focus on agriculture, the importance of multilevel selection and complex systems theory, and utopic versus dystopic scenarios for the future.
January 2016: Behavioral and Brain Sciences
Yang Hou, Su Yeong Kim, Nancy Hazen, Aprile D Benner
Parental discriminatory experiences can have significant implications for adolescent adjustment. This study examined family processes linking parental perceived discrimination to adolescent depressive symptoms and delinquent behaviors by using the family stress model and incorporating family systems theory. Participants were 444 Chinese American adolescents (Mage.wave1  = 13.03) and their parents residing in Northern California. Testing of actor-partner interdependent models showed a significant indirect effect from earlier paternal (but not maternal) perceived discrimination to later adolescent adjustment through paternal depressive symptoms and maternal hostility toward adolescents...
August 22, 2016: Child Development
V J García-Garrido, A Ramos, A M Mancho, J Coca, S Wiggins
This paper discusses the combined use of tools from dynamical systems theory and remote sensing techniques and shows how they are effective instruments which may greatly contribute to the decision making protocols of the emergency services for the real-time management of oil spills. This work presents the successful interplay of these techniques for a recent situation, the sinking of the Oleg Naydenov fishing ship that took place in Spain, close to the Canary Islands, in April 2015.
November 15, 2016: Marine Pollution Bulletin
Francesco Montefusco, Ozgur E Akman, Orkun S Soyer, Declan G Bates
Many of the most important potential applications of Synthetic Biology will require the ability to design and implement high performance feedback control systems that can accurately regulate the dynamics of multiple molecular species within the cell. Here, we argue that the use of design strategies based on combining ultrasensitive response dynamics with negative feedback represents a natural approach to this problem that fully exploits the strongly nonlinear nature of cellular information processing. We propose that such feedback mechanisms can explain the adaptive responses observed in one of the most widely studied biomolecular feedback systems-the yeast osmoregulatory response network...
2016: PloS One
Lucy Grant, Amrit Sangha, Sara Lister, Theresa Wiseman
OBJECTIVE: This study developed and piloted an educational intervention to support healthcare professionals (HCPs) to provide supportive care for families when a parent has cancer. METHODS: Programme development followed the Medical Research Council (MRC) framework, beginning with examination of theory and research, and consultation with experts. The programme content incorporated attachment theory, child development and family systems theory. It was piloted thrice with HCPs from a cancer centre...
August 16, 2016: BMJ Supportive & Palliative Care
Jay Fagan, Ethan Czuy Levine, Rebecca Kaufman, Colin Hammar
Low-income, nonresident fathers are often involved in complex coparenting networks that may involve multiple mothers, relatives, and other adults. However, the coparenting literature has often obscured this complexity through limiting attention to father-mother relationships. The current study used family systems theory to examine the effects of fathers' coparenting with mothers and relatives on fathers' parenting self-efficacy, father-child closeness, and father-child conflict. Predictors included the number of fathers' coparenting mothers and relatives, the quality of those coparenting relationships, and coparenting alliances specifically between fathers and the biological mother of a target child...
September 2016: Journal of Family Psychology: JFP
Saeed Karimi-Aghdam
This paper sets out to present a novel construal of one of the notions of Vygotskian cultural-historical theory viz., zone of proximal development (ZPD) drawing upon dynamic systems theory. The principal thesis maintains that ZDP is an emergent and dynamic system which is engendered by a dialectical concatenation of psychogenesic and sociogenesic facets of human development over time. It is reasoned that Vygotskian cultural-historical theory of human development, by invoking dialectical logic, has transcended Cartesian substance dualism and in turn has proffered a monistic and process-anchored ontology for emerging becoming of human consciousness...
August 11, 2016: Integrative Psychological & Behavioral Science
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