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https://www.readbyqxmd.com/read/28212440/emergent-inequality-and-self-organized-social-classes-in-a-network-of-power-and-frustration
#1
Benoit Mahault, Avadh Saxena, Cristiano Nisoli
We propose a simple agent-based model on a network to conceptualize the allocation of limited wealth among more abundant expectations at the interplay of power, frustration, and initiative. Concepts imported from the statistical physics of frustrated systems in and out of equilibrium allow us to compare subjective measures of frustration and satisfaction to collective measures of fairness in wealth distribution, such as the Lorenz curve and the Gini index. We find that a completely libertarian, law-of-the-jungle setting, where every agent can acquire wealth from or lose wealth to anybody else invariably leads to a complete polarization of the distribution of wealth vs...
2017: PloS One
https://www.readbyqxmd.com/read/28211884/responses-of-spatial-temporal-dynamics-of-bacterioplankton-community-to-large-scale-reservoir-operation-a-case-study-in-the-three-gorges-reservoir-china
#2
Zhe Li, Lunhui Lu, Jinsong Guo, Jixiang Yang, Jiachao Zhang, Bin He, Linlin Xu
Large rivers are commonly regulated by damming, yet the effects of such disruption on bacterioplankton community structures have not been adequately studied. The aim of this study was to explore the biogeographical patterns present under dam regulation and to uncover the major drivers structuring bacterioplankton communities. Bacterioplankton assemblages in the Three Gorges Reservoir (TGR) were analyzed using Illumina Miseq sequencing by comparing seven sites located within the TGR before and after impoundment...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28211134/effect-of-age-on-the-performance-of-bispectral-and-entropy-indices-during-sevoflurane-pediatric-anesthesia-a-pharmacometric-study
#3
Alberto Sciusco, Joseph F Standing, Yucheng Sheng, Pasquale Raimondo, Gilda Cinnella, Michele Dambrosio
BACKGROUND: Bispectral index (BIS) and entropy monitors have been proposed for use in children, but research has not supported their validity for infants. However, effective monitoring of young children may be even more important than for adults, to aid appropriate anesthetic dosing and reduce the chance of adverse consequences. This prospective study aimed to investigate the relationships between age and the predictive performance of BIS and entropy monitors in measuring the anesthetic drug effects within a pediatric surgery setting...
February 17, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28210935/the-effect-of-fluid-resuscitation-on-the-effective-circulating-volume-in-patients-undergoing-liver-surgery-a-post-hoc-analysis-of-a-randomized-controlled-trial
#4
Jaap Jan Vos, A F Kalmar, H G D Hendriks, J Bakker, T W L Scheeren
To assess the significance of an analogue of the mean systemic filling pressure (Pmsa) and its derived variables, in providing a physiology based discrimination between responders and non-responders to fluid resuscitation during liver surgery. A post-hoc analysis of data from 30 patients undergoing major hepatic surgery was performed. Patients received 15 ml kg(-1) fluid in 30 min. Fluid responsiveness (FR) was defined as an increase of 20% or greater in cardiac index, measured by FloTrac-Vigileo(®). Dynamic preload variables (pulse pressure variation and stroke volume variation: PPV, SVV) were recorded additionally...
February 16, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28209576/differences-in-hemodynamics-and-rupture-rate-of-aneurysms-at-the-bifurcation-of-the-basilar-and-internal-carotid-arteries
#5
R Doddasomayajula, B Chung, F Hamzei-Sichani, C M Putman, J R Cebral
BACKGROUND AND PURPOSE: Cerebral aneurysms in the posterior circulation are known to have a higher rupture risk than those in the anterior circulation. We sought to test the hypothesis that differences in hemodynamics can explain the difference in rupture rates. MATERIALS AND METHODS: A total of 117 aneurysms, 63 at the tip of the basilar artery (27 ruptured, 36 unruptured, rupture rate = 43%) and 54 at the bifurcation of the internal carotid artery (11 ruptured, 43 unruptured, rupture rate = 20%) were analyzed with image-based computational fluid dynamics...
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28209409/interplay-between-river-dynamics-and-international-borders-the-hirmand-river-between-iran-and-afghanistan
#6
Saleh Yousefi, Saskia Keesstra, Hamid Reza Pourghasemi, Nicola Surian, Somayeh Mirzaee
Fluvial dynamics in riverine borders can play an important role in political relationships between countries. Rivers move and evolve under the influence of natural processes and external drivers (e.g. land use change in river catchments). The Hirmand River is an important riverine border between Iran and Afghanistan. The present study shows the evolution and lateral shifting of the Hirmand River along the international border (25.6km) over a period of 6 decades (1955-2015). Seven data series of aerial photos, topographic maps and Landsat images were used to analyze land cover and channel changes in the study reach...
February 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28209171/integrated-strategy-for-in-vitro-characterization-of-a-bileaflet-mechanical-aortic-valve
#7
Francesca Maria Susin, Stefania Espa, Riccardo Toninato, Stefania Fortini, Giorgio Querzoli
BACKGROUND: Haemodynamic performance of heart valve prosthesis can be defined as its ability to fully open and completely close during the cardiac cycle, neither overloading heart work nor damaging blood particles when passing through the valve. In this perspective, global and local flow parameters, valve dynamics and blood damage safety of the prosthesis, as well as their mutual interactions, have all to be accounted for when assessing the device functionality. Even though all these issues have been and continue to be widely investigated, they are not usually studied through an integrated approach yet, i...
February 16, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28209042/-determination-of-biomarkers-in-exhaled-breath-condensation-of-acute-exacerbation-of-chronic-obstructive-pulmonary-disease-and-its-clinical-implications
#8
X Q Dong, Q Shen, Y N Yao, J J Chen, G H Lu, J Y Zhou
Objective: To analyse the changes and clinical implication of biomarkers in exhaled breath condensates (EBC) of acute exacerbation of chronic obstructive pulmonary disease (AECOPD) before and after treatment. Methods: 20 patients with AECOPD were enrolled, including 15 males and 5 females. The average age was 71±10, ranging from 50-85. The concentrations of Leukotriene B4 (LTB4) and Interleukin 6 (IL-6) from EBC were assayed by ELISA kit before and after treatment. Serum inflammatory indexes, pulmonary function test and quality of life (CAT) were observed at the same time, the relationship between EBC biomarkers and clinical markers were investigated...
February 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28208649/factors-influencing-the-incidence-of-obesity-in-australia-a-generalized-ordered-probit-model
#9
Gulay Avsar, Roger Ham, W Kathy Tannous
The increasing health costs of and the risks factors associated with obesity are well documented. From this perspective, it is important that the propensity of individuals towards obesity is analyzed. This paper uses longitudinal data from the Household Income and Labour Dynamics in Australia (HILDA) Survey for 2005 to 2010 to model those variables which condition the probability of being obese. The model estimated is a random effects generalized ordered probit, which exploits two sources of heterogeneity; the individual heterogeneity of panel data models and heterogeneity across body mass index (BMI) categories...
February 10, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28208486/coherent-libration-to-coherent-rotational-dynamics-via-chimeralike-states-and-clustering-in-a-josephson-junction-array
#10
Arindam Mishra, Suman Saha, Chittaranjan Hens, Prodyot K Roy, Mridul Bose, Patrick Louodop, Hilda A Cerdeira, Syamal K Dana
An array of excitable Josephson junctions under a global mean-field interaction and a common periodic forcing shows the emergence of two important classes of coherent dynamics, librational and rotational motion, in the weaker and stronger coupling limits, respectively, with transitions to chimeralike states and clustered states in the intermediate coupling range. In this numerical study, we use the Kuramoto complex order parameter and introduce two measures, a libration index and a clustering index, to characterize the dynamical regimes and their transitions and locate them in a parameter plane...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28207804/spatio-temporal-dynamics-of-a-fish-predator-density-dependent-and-hydrographic-effects-on-baltic-sea-cod-population
#11
Valerio Bartolino, Huidong Tian, Ulf Bergström, Pekka Jounela, Eero Aro, Christian Dieterich, H E Markus Meier, Massimiliano Cardinale, Barbara Bland, Michele Casini
Understanding the mechanisms of spatial population dynamics is crucial for the successful management of exploited species and ecosystems. However, the underlying mechanisms of spatial distribution are generally complex due to the concurrent forcing of both density-dependent species interactions and density-independent environmental factors. Despite the high economic value and central ecological importance of cod in the Baltic Sea, the drivers of its spatio-temporal population dynamics have not been analytically investigated so far...
2017: PloS One
https://www.readbyqxmd.com/read/28207430/evaluation-of-augmented-pulse-pressure-variation-using-the-valsalva-manoeuvre-as-a-predictor-of-fluid-responsiveness-under-open-chest-conditions-a-prospective-observational-study
#12
Jeong Jin Min, Tae Kyong Kim, Jong-Hwan Lee, Jiyeon Park, Hyun Sung Cho, Wook Sung Kim, Young Tak Lee
BACKGROUND: Pulse pressure variation (PPV) is a well known dynamic preload indicator of fluid responsiveness. However, its usefulness in open-chest conditions remains controversial. OBJECTIVE: We evaluated whether augmented PPV during a Valsalva manoeuvre can predict fluid responsiveness after sternotomy. DESIGN: A prospective, observational study. SETTING: Single-centre trial, study period from October 2014 to June 2015...
February 15, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28203240/experimental-air-warming-of-a-stylosanthes-capitata-vogel-dominated-tropical-pasture-affects-soil-respiration-and-nitrogen-dynamics
#13
Miquel A Gonzalez-Meler, Lais B C Silva, Eduardo Dias-De-Oliveira, Charles E Flower, Carlos A Martinez
Warming due to global climate change is predicted to reach 2°C in tropical latitudes. There is an alarming paucity of information regarding the effects of air temperature on tropical agroecosystems, including foraging pastures. Here, we investigated the effects of a 2°C increase in air temperature over ambient for 30 days on an established tropical pasture (Ribeirão Preto, São Paulo, Brazil) dominated by the legume Stylosanthes capitata Vogel, using a T-FACE (temperature free-air controlled enhancement) system...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28199149/a-genetic-method-to-evaluate-the-prevalence-of-unique-dna-profiles-between-sequential-ground-beef-batches
#14
G Peters, B Cleveland, J Higgins, F Butler, C Meghen
The delineation of ground beef batches has implications for the management of product disposition policies in the event of Shiga toxin-producing Escherichia coli contamination. Analysis of individual contributor animal-specific DNA profiles can provide valuable empirical data for understanding the dynamics of ground meat production processes and can act as a surrogate for cross-contamination. A genetic method was developed for characterizing the source raw material flow and carryover between discrete batches of ground beef in a large-scale commercial beef grinding operation...
February 15, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28198781/biomechanical-analysis-of-two-level-cervical-disc-replacement-with-a-stand-alone-u-shaped-disc-implant
#15
Yang Li, Guy R Fogel, Zhenhua Liao, Rajnesh Tyagi, Gaolong Zhang, Weiqiang Liu
STUDY DESIGN: Biomechanical study using a three-dimensional nonlinear finite element (FE) model. OBJECTIVE: To analyze biomechanical changes with three prostheses based on two-level arthroplasty and to verify the biomechanical efficiency of dynamic cervical implants (DCIs) with a stand-alone U-shaped structure. SUMMARY OF BACKGROUND DATA: Few studies have compared biomechanical behavior of various prostheses as they relate to clinical results after two-level total disc replacement (TDR)...
February 14, 2017: Spine
https://www.readbyqxmd.com/read/28197849/effect-of-myofascial-techniques-for-treatment-of-upper-limb-dysfunctions-in-breast-cancer-survivors-randomized-controlled-trial
#16
An De Groef, Marijke Van Kampen, Nele Verlvoesem, Evi Dieltjens, Lore Vos, Tessa De Vrieze, Marie-Rose Christiaens, Patrick Neven, Inge Geraerts, Nele Devoogdt
PURPOSE: Besides pain, myofascial dysfunctions may contribute to the presence of upper limb impairments such as impaired range of motion, decreased strength, lymphedema, and altered postures and kinematics. Therefore, the aim of this study was to investigate the effect of myofascial therapy in addition to a standard physical therapy program for treatment of upper limb dysfunctions in breast cancer survivors. METHODS: Fifty women treated for a unilateral breast cancer with pain and myofascial dysfunctions at the upper limb region...
February 14, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28197403/network-plasticity-and-intraoperative-mapping-for-personalized-multimodal-management-of-diffuse-low-grade-gliomas
#17
REVIEW
Cristina Diana Ghinda, Hugues Duffau
Gliomas are the most frequent primary brain tumors and include a variety of different histological tumor types and malignancy grades. Recent achievements in terms of molecular and imaging fields have created an unprecedented opportunity to perform a comprehensive interdisciplinary assessment of the glioma pathophysiology, with direct implications in terms of the medical and surgical treatment strategies available for patients. The current paradigm shift considers glioma management in a comprehensive perspective that takes into account the intricate connectivity of the cerebral networks...
2017: Frontiers in Surgery
https://www.readbyqxmd.com/read/28197271/low-density-lipoprotein-and-non-newtonian-oscillating-flow-biomechanical-parameters-for-normal-human-aorta
#18
Johannes V Soulis, Dimitrios K Fytanidis, Olga P Lampri, George D Giannoglou
BACKGROUND: The temporal variation of the hemodynamic mechanical parameters during cardiac pulse wave is considered as an important atherogenic factor. Applying non-Newtonian blood molecular viscosity simulation is crucial for hemodynamic analysis. Understanding low density lipoprotein (LDL) distribution in relation to flow parameters will possibly spot the prone to atherosclerosis aorta regions. METHODS: The biomechanical parameters tested were averaged wall shear stress (AWSS), oscillatory shear index (OSI) and relative residence time (RRT) in relation to the LDL concentration...
April 2016: Cardiology Research
https://www.readbyqxmd.com/read/28195502/on-the-immersion-liquid-evaporation-method-based-on-the-dynamic-sweep-of-magnitude-of-the-refractive-index-of-a-binary-liquid-mixture-a-case-study-on-determining-mineral-particle-light-dispersion
#19
Ilpo Niskanen, Jukka Räty, Kai-Erik Peiponen
This is a feasibility study of a modified immersion liquid technique for determining the refractive index of micro-sized particles. The practical challenge of the traditional liquid immersion method is to find or produce a suitable host liquid whose refractive index equals that of a solid particle. Usually, the immersion liquid method uses a set of immersion liquids with different refractive indices or continuously mixes two liquids with different refractive indices, e.g., using a pumping system. Here, the phenomenon of liquid evaporation has been utilized in defining the time-dependent refractive index variation of the host liquid...
January 1, 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28194127/interpersonal-coordination-and-individual-organization-combined-with-shared-phenomenological-experience-in-rowing-performance-two-case-studies
#20
Ludovic Seifert, Julien Lardy, Jérôme Bourbousson, David Adé, Antoine Nordez, Régis Thouvarecq, Jacques Saury
The principal aim of this study was to examine the impact of variability in interpersonal coordination and individual organization on rowing performance. The second aim was to analyze crew phenomenology in order to understand how rowers experience their joint actions when coping with constraints emerging from the race. We conducted a descriptive and exploratory study of two coxless pair crews during a 3000-m rowing race against the clock. As the investigation was performed in an ecological context, we postulated that our understanding of the behavioral dynamics of interpersonal coordination and individual organization and the variability in performance would be enriched through the analysis of crew phenomenology...
2017: Frontiers in Psychology
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