keyword
MENU ▼
Read by QxMD icon Read
search

system theory

keyword
https://www.readbyqxmd.com/read/28926598/-if-he-could-speak-he-would-be-able-to-point-out-who-does-those-things-to-him-experiences-of-violence-and-access-to-child-protection-among-children-with-disabilities-in-uganda-and-malawi
#1
Lena Morgon Banks, Susan A Kelly, Nambusi Kyegombe, Hannah Kuper, Karen Devries
INTRODUCTION: There is growing evidence that children with disabilities face an increased risk of violence globally. While child protection mechanisms to prevent and respond to violence-including formal government systems and more informal programmes and activities run by local communities or NGOs-are slowly becoming operationalised in low- and- middle-income countries, little is known about whether existing mechanisms are disability-inclusive. The aim of this study is to provide a better understanding of children with disabilities' experiences of violence and their access to available child protection mechanisms in low resource settings...
2017: PloS One
https://www.readbyqxmd.com/read/28926305/structural-relationships-among-the-revised-reinforcement-sensitivity-theory-and-grandiose-and-vulnerable-narcissism
#2
Christopher C Spencer, Joshua D Foster, Jeffrey S Bedwell
Research shows that grandiosity and vulnerability are distinct aspects of narcissism. The Contemporary Clinical Model (CCM) of narcissism suggests that individuals fluctuate between grandiose narcissism (GN) and vulnerable narcissism (VN). The authors examine the relative contributions of the Behavioral Approach System (BAS), the Behavioral Inhibition System (BIS), and the Fight-Flight-Freeze System (FFFS) in the Revised Reinforcement Sensitivity Theory of Personality (r-RST) to GN and VN. Few studies examine the r-RST, and even fewer examine the VN and GN distinction...
September 19, 2017: Journal of Personality Disorders
https://www.readbyqxmd.com/read/28926258/matrix-isolation-studies-of-novel-intermediates-in-the-reaction-of-trimethylaluminum-with-ozone
#3
H Dushanee M Sriyarathne, Bruce S Ault
The thermal reaction of ozone with trimethyl aluminum has been explored using twin jet, concentric jet and merged jet deposition into cryogenic matrixes. Infrared spectroscopy and density functional theory calculations have been employed to identify and characterize the products formed in each case. Together, these deposition techniques provide information over the essentially full course of the gas phase reaction. At short times with twin jet deposition, the primary product is the O atom insertion product (CH3)2AlOCH3...
September 19, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28926027/using-institutional-and-behavioural-economics-to-examine-animal-health-systems
#4
C A Wolf
Economics provides a framework for understanding management decisions and their policy implications for the animal health system. While the neoclassical economic model is useful for framing animal health decisions on the farm, some of its assumptions and prescriptive results may be unrealistic. Institutional and behavioural economics address some of these potential shortcomings by considering the role of information, psychology and social factors in decisions. Framing such decisions under contract theory allows us to consider asymmetric information between policy-makers and farmers...
April 2017: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28926009/improving-the-delivery-of-veterinary-services-in-africa-insights-from-the-empirical-application-of-transaction-costs-theory-in-uganda-and-kenya
#5
J Ilukor
This paper presents a summary of findings from a research project that examined institutional arrangements for providing animal health services in Uganda and Kenya. Given the need to find solutions to the pervasive governance challenges encountered in the delivery of veterinary services in Africa, the study applied transaction economics theory to generate recommendations on how to improve the delivery of these services and minimise livestock production risks, including those that pose a risk to human health, e...
April 2017: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28925984/a-robust-inner-and-outer-loop-control-method-for-trajectory-tracking-of-a-quadrotor
#6
Dunzhu Xia, Limei Cheng, Yanhong Yao
In order to achieve the complicated trajectory tracking of quadrotor, a geometric inner and outer loop control scheme is presented. The outer loop generates the desired rotation matrix for the inner loop. To improve the response speed and robustness, a geometric SMC controller is designed for the inner loop. The outer loop is also designed via sliding mode control (SMC). By Lyapunov theory and cascade theory, the closed-loop system stability is guaranteed. Next, the tracking performance is validated by tracking three representative trajectories...
September 19, 2017: Sensors
https://www.readbyqxmd.com/read/28925704/ict-isomerization-induced-turn-on-fluorescence-probe-with-a-large-emission-shift-for-mercury-ion-application-in-combinational-molecular-logic
#7
Sushil Ranjan Bhatta, Bijan Mondal, Gonela Vijaykumar, Arunabha Thakur
A unique turn-on fluorescent device based on a ferrocene-aminonaphtholate derivative specific for Hg(2+) cation was developed. Upon binding with Hg(2+) ion, the probe shows a dramatic fluorescence enhancement (the fluorescence quantum yield increases 58-fold) along with a large red shift of 68 nm in the emission spectrum. The fluorescence enhancement with a red shift may be ascribed to the combinational effect of C═N isomerization and an extended intramolecular charge transfer (ICT) mechanism. The response was instantaneous with a detection limit of 2...
September 19, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28925531/theoretical-evidences-behind-bifunctional-catalytic-activity-in-pristine-and-functionalized-al2c-monolayer
#8
Rosely Almeida, Amitava Banerjee, Sudip Chakraborty, Jailton Almeida, Rajeev Ahuja
First principles electronic structure calculations based on density functional theory (DFT) framework are performed to investigate hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) on two-dimensional Al2C monolayer. The monolayer is functionalized with several dopants and four prominent doping elements are nitrogen (N), phosphorous (P), boron (B) and sulphur (S). After determining the individual adsorption energy of hydrogen and oxygen on different functionalized Al2C monolayer, the adsorption free energies are predicted subsequently for each of the functionalized cases in order to predict which case of functionalization serves better for HER or OER...
September 19, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28923159/the-extended-trust-hypothesis-single-attractor-self-contagion-in-day-to-day-changes-in-implicit-positive-affect-predicts-action-oriented-coping-and-psychological-symptoms
#9
Julius Kuhl, Olga Mitina, Sander L Koole
According to the extended trust hypothesis, the ability to cope with negative experiences is grounded in intuitive positive feelings about one's existence (Kuhl, Quirin, & Koole, 2015). In the present study, the authors empirically tested this hypothesis by examining the nonlinear dynamics in a series of day-to-day autoregressive functions of affective states taken from a 30-day daily mood diary study among 40 participants. A parameter (?) related to the asymptotic level of day-to-day changes in implicit positive mood predicted action orientation, a personality variable that relates to coping with negative affect, and psychological symptoms...
October 2017: Nonlinear Dynamics, Psychology, and Life Sciences
https://www.readbyqxmd.com/read/28923157/walter-freeman-iii-and-the-chaotic-nature-of-dreams
#10
Allan Combs, Stanley Krippner
The contributions and life of Walter Freeman III are celebrated through an understanding of the neurodynamics of the dreaming brain. Beginning with a brief review of the universal dynamics of self-organizing systems, this paper turns to an exploration of dreaming through the application of concepts from chaos theory to brain activity during REM-state dreaming. Recent studies of the electrophysiology of the brain during REM state dreaming are reviewed, such as the active inhibition of sensory stimulation and, especially in REM sleep, alterations in the brain's dominant neuromodulatory systems, bombardment of the visual cortex with bursts of PGO activity, increased limbic system activity, and a reduction of activity in the brain's prefrontal regions...
October 2017: Nonlinear Dynamics, Psychology, and Life Sciences
https://www.readbyqxmd.com/read/28923156/functional-constructivism-in-search-of-formal-descriptors
#11
Irina Trofimova
The Functional Constructivism (FC) paradigm is an alternative to behaviorism and considers behavior as being generated every time anew, based on an individual's capacities, environmental resources and demands. Walter Freeman's work provided us with evidence supporting the FC principles. In this paper we make parallels between gradual construction processes leading to the formation of individual behavior and habits, and evolutionary processes leading to the establishment of biological systems. Referencing evolutionary theory, several formal descriptors of such processes are proposed...
October 2017: Nonlinear Dynamics, Psychology, and Life Sciences
https://www.readbyqxmd.com/read/28923155/modeling-stochastic-complexity-in-complex-adaptive-systems-non-kolmogorov-probability-and-the-process-algebra-approach
#12
William H Sulis
Walter Freeman III pioneered the application of nonlinear dynamical systems theories and methodologies in his work on mesoscopic brain dynamics.Sadly, mainstream psychology and psychiatry still cling to linear correlation based data analysis techniques, which threaten to subvert the process of experimentation and theory building. In order to progress, it is necessary to develop tools capable of managing the stochastic complexity of complex biopsychosocial systems, which includes multilevel feedback relationships, nonlinear interactions, chaotic dynamics and adaptability...
October 2017: Nonlinear Dynamics, Psychology, and Life Sciences
https://www.readbyqxmd.com/read/28922967/contemporary-hiv-aids-research-insights-from-knowledge-management-theory
#13
Chris William Callaghan
Knowledge management as a field is concerned with the management of knowledge, including the management of knowledge in research processes. Knowledge management theory has the potential to support research into problems such as HIV, antibiotic resistance and others, particularly in terms of aspects of scientific research related to the contribution of social science. To date, however, these challenges remain with us, and theoretical contributions that can complement natural science efforts to eradicate these problems are needed...
December 2017: SAHARA J: Journal of Social Aspects of HIV/AIDS Research Alliance
https://www.readbyqxmd.com/read/28922654/student-s-perception-about-innovative-teaching-learning-practices-in-forensic-medicine
#14
Sanjay Gupta, Utsav N Parekh, Jaishree D Ganjiwale
BACKGROUND: Since decades, Forensic Medicine is mainly taught by didactic methods but in last couple of years some other teachinglearning and assessment methods are also introduced at some places which also lacks uniformity. Feedback from learners is most fundamental aspect to assess effectiveness of applied methods, but is not implemented in practice at most medical schools in India. Unfortunately, medical students are deprived of this practical empowerment and thus may not be efficient enough to contribute potentially to the justice system during their professional life...
September 11, 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28922648/a-theoretical-and-empirical-modeling-of-anxiety-integrated-with-rdoc-and-temporal-dynamics
#15
Brandon Frank, Nicholas C Jacobson, Landon Hurley, Dean McKay
The newly launched Research Domain Criteria (RDoC) emphasize specific mechanisms over diagnostic categories of psychopathology. In our view, RDoC provides a useful heuristic for mental health disorders, but does not capture the complexity of psychological data when proposed mechanisms are viewed as static entities. However, temporal and complex system dynamics may advance RDoC's utility. By investigating temporal patterns within trajectories and the interaction of complex networks, we propose that dynamic modeling provides comprehensive methods with which to investigate the etiopathology and maintenance of mental health disorders...
September 8, 2017: Journal of Anxiety Disorders
https://www.readbyqxmd.com/read/28922520/a-review-of-joint-attention-and-social-cognitive-brain-systems-in-typical-development-and-autism-spectrum-disorder
#16
Peter Mundy
This article provides a review of the increasingly detailed literature on the neurodevelopment of joint attention. Many findings from this literature support and inform the hypothesis that the neurodevelopment of joint attention contributes to the functional development of neural systems for human social cognition. Joint attention begins to develop by 5 months of age and is tantamount to the ability to adopt a common perspective with another person. It involves a whole-brain system with nodes in the: (a) dorsal and medial frontal cortex, (b) orbital frontal/insula cortex, (c) anterior/ posterior cingulate cortex, (d) superior temporal cortex, (e) precuneus/parietal cortex, and (f) amygdala and striatum...
September 18, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28921986/combining-density-functional-theory-and-green-s-function-theory-range-separated-nonlocal-dynamic-and-orbital-dependent-hybrid-functional
#17
Alexei A Kananenka, Dominika Zgid
We present a rigorous framework which combines single-particle Green's function theory with density functional theory based on a separation of electron-electron interactions into short- and long-range components. Short-range contribution to the total energy and exchange-correlation potential is provided by a density functional approximation, while the long-range contribution is calculated using an explicit many-body Green's function method. Such a hybrid results in a nonlocal, dynamic, and orbital-dependent exchange-correlation functional of a single-particle Green's function...
September 18, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28921977/photoinduced-bimolecular-electron-transfer-in-ionic-liquids
#18
Boning Wu, Mark Maroncelli, Edward W Castner
The present work seeks to better understand the role of solute diffusion and solvation dynamics on bimolecular electron transfer in ionic liquids (ILs). Steady-state and time-resolved measurements of the reductive fluorescence quenching of five fluorophores ("F") by six quenchers ("Q"; electron donors) are reported in acetonitrile and two ionic liquids, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide and trihexyl(tetradecyl)phosphonium bis(trifluoromethylsulfonyl)amide. Data were collected on 66 different F-Q-solvent systems, which span a 2...
September 18, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28921975/intricacies-of-van-der-waals-interactions-in-systems-with-elongated-bonds-revealed-by-electron-groups-embedding-and-high-level-coupled-cluster-approaches
#19
Ewa Pastorczak, Jun Shen, Michal Hapka, Piotr Piecuch, Katarzyna Pernal
Non-covalent interactions between molecules with stretched intramonomer covalent bonds are a fascinating, yet little studied area. This shortage of information stems largely from the inability of most of the commonly used computational quantum chemistry methods to accurately describe weak long-range and strong non-dynamic correlations at the same time. In this work, we propose a geminal-based approach, abbreviated as EERPA-GVB, capable of describing such systems in a robust manner using relatively inexpensive computational steps...
September 18, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28921958/electronic-structural-analysis-of-copper-ii-tempo-abno-complexes-provides-evidence-for-copper-i-oxoammonium-character
#20
Richard C Walroth, Kelsey C Miles, James T Lukens, Samantha N MacMillan, Shannon S Stahl, Kyle M Lancaster
Copper/aminoxyl species are proposed as key intermediates in aerobic alcohol oxidation. Several possible electronic structural descriptions of these species are possible, and the present study probes this issue by examining four crystallographically characterized Cu/aminoxyl halide complexes by Cu K-edge, Cu L2,3-edge, and Cl K-edge X-ray absorption spectroscopy. The mixing coefficients between Cu, aminoxyl, and halide orbitals are determined via these techniques with support from density functional theory...
September 18, 2017: Journal of the American Chemical Society
keyword
keyword
80957
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"