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https://www.readbyqxmd.com/read/28441736/a-weighted-belief-entropy-based-uncertainty-measure-for-multi-sensor-data-fusion
#1
Yongchuan Tang, Deyun Zhou, Shuai Xu, Zichang He
In real applications, how to measure the uncertain degree of sensor reports before applying sensor data fusion is a big challenge. In this paper, in the frame of Dempster-Shafer evidence theory, a weighted belief entropy based on Deng entropy is proposed to quantify the uncertainty of uncertain information. The weight of the proposed belief entropy is based on the relative scale of a proposition with regard to the frame of discernment (FOD). Compared with some other uncertainty measures in Dempster-Shafer framework, the new measure focuses on the uncertain information represented by not only the mass function, but also the scale of the FOD, which means less information loss in information processing...
April 22, 2017: Sensors
https://www.readbyqxmd.com/read/28440916/high-temperature-crystal-structure-and-chemical-bonding-in-thermoelectric-germanium-selenide-gese
#2
Mattia Sist, Carlo Gatti, Peter Nørby, Simone Cenedese, Hidetaka Kasai, Kenichi Kato, Bo B Iversen
The discovery of the ultra-high thermoelectric figure of merit of 2.6 in SnSe has drawn attention to other lead-free IV-VI orthorhombic semiconductors. GeSe has been predicted to possess thermoelectric performances comparable to SnSe. Here, a complete structural study is reported of GeSe with temperature by means of high-resolution synchrotron powder X-ray diffraction. In the orthorhombic phase, the evolution of the bond distances with temperature is shown to deviate significantly with respect to SnSe. Analysis of the chemical bonding within the Quantum Theory of Atoms in Molecules shows that GeSe is ionic with van der Waals interlayer interactions...
April 25, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28440657/aromaticity-of-non-planar-fully-benzenoid-hydrocarbons
#3
Marija Antic, Boris Furtula, Slavko Radenković
The Clar aromatic sextet theory can provide the qualitative description on the dominant modes of cyclic π-electron conjugation in benzenoid molecules, and on the relative stability among a series of isomeric benzenoid systems. In a series of non-planar fully benzenoid hydrocarbons, the predictions of the Clar theory were tested by means of several different theoretical approaches: topological resonance energy (TRE), energy effect (ef), harmonic oscillator model of aromaticity (HOMA) index, six centre delocalization index (SCI) and nucleus independent chemical shifts (NICS)...
April 25, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28440384/theoretical-and-numerical-analysis-of-nano-actuators-based-on-grafted-polyelectrolytes-in-an-electric-field
#4
N V Brilliantov, Yu A Budkov, C Seidel
We analyze, theoretically and by means of molecular dynamics (MD) simulations, the generation of mechanical force by a polyelectrolyte (PE) chain grafted to a plane and exposed to an external electric field; the free end of the chain is linked to a deformable target body. Varying the field, one can alter the length of the non-adsorbed (bulk) part of the chain and hence the deformation of the target body and the arising force. We focus on the impact of added salt on the magnitude of the generated force, which is especially important for applications...
April 25, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28438073/the-meaning-profiles-of-anxiety-and-depression-similarities-and-differences-in-two-age-groups
#5
Shulamith Kreitler
The distinctiveness of anxiety and depression is discussed concerning their nature, definitions, uses, manifestations and determinants. The objective was to examine the difference and similarity of anxiety and depression by applying the psychosemantic approach, which is a theory and methodology based on analysing the cognitive processes applied in communicating meanings. In Study 1, there were 760 participants of both genders, 23-31 years old. They were administered the Meanings Test, which yields the respondent's meaning profile, and one of seven anxiety scales or one of three depression scales...
April 25, 2017: Cognition & Emotion
https://www.readbyqxmd.com/read/28437750/becoming-comfortable-with-my-epilepsy-strategies-that-patients-use-in-the-journey-from-diagnosis-to-acceptance-and-disclosure
#6
Sinead Pembroke, Agnes Higgins, Niall Pender, Naomi Elliott
OBJECTIVE: Proponents of resilience theory have highlighted the importance of understanding the processes of resilience. The objective of the study was to explore how people with epilepsy reach a stage of being comfortable with their epilepsy. Identifying the processes used is important to developing effective self-management for people who are newly diagnosed with epilepsy. METHOD: A grounded theory approach involving forty-nine consenting adult people with epilepsy (18 years and over), was used to explore their first-hand experiences of coming to terms with their epilepsy...
April 19, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28437256/electron-inelastic-mean-free-path-at-energies-below-100-ev
#7
Hieu T Nguyen-Truong
Knowledge of electron inelastic mean free paths (IMFPs) is important for electron spectroscopy and microscopy studies. Here, we determine the IMFPs at energies below 100 eV for 10 elemental solids (V, Fe, Ni, Mo, Pd, Ag, Ta, W, Pt, and Au) within the dielectric formalism, using the energy-loss function calculated in the adiabatic local-density approximation of time-dependent density-functional theory. The resulting IMFPs at a few eV above the Fermi energy are comparable to those from ab initio calculations in the GW approximation of many-body theory...
April 24, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28436661/performance-of-van-der-waals-corrected-functionals-for-guest-adsorption-in-the-m2-dobdc-metal-organic-frameworks
#8
Bess Vlaisavljevich, Johanna M Huck, Zeric Hulvey, Kyuho Lee, Jarad A Mason, Jeffrey B Neaton, Jeffrey R Long, Craig M Brown, Dario Alfè, Angelos Michaelides, Berend Smit
Small molecule binding in metal-organic frameworks (MOFs) can be accurately studied both experimentally and computationally, provided the proper tools are employed. Herein, we compare and contrast properties associated with guest binding by means of density functional theory (DFT) calculations using nine different functionals for the M2(dobdc) (dobdc4- = 2,5-dioxido,1,4-benzenedicarboxylate) series where M = Mg, Mn, Fe, Co, Ni, Cu, and Zn. Additionally, we perform Quantum Monte Carlo (QMC) calculations for one system to determine if this method can be used to assess the performance of DFT...
April 24, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28436287/positive-affect-and-physical-activity-testing-effects-on-goal-setting-activation-prioritisation-and-attainment
#9
David S Cameron, Emma J Bertenshaw, Paschal Sheeran
OBJECTIVE: The present research tested whether incidental positive affect promotes pursuit of physical activity goals. Four key features of goal pursuit were examined - setting physical activity goals (Study 1), goal activation (Study 2), and goal prioritization and goal attainment (Study 3). DESIGN: Participants (Ns = 80, 81, and 59, in Studies 1-3, respectively) were randomized to positive affect (joy, hope) or neutral affect (control) conditions in each study...
April 23, 2017: Psychology & Health
https://www.readbyqxmd.com/read/28436038/direct-current-stimulation-boosts-synaptic-gain-and-cooperativity-in-vitro
#10
Asif Rahman, Belen Lafon, Lucas C Parra, Marom Bikson
KEY POINTS: Direct current stimulation (DCS) polarity specifically modulates synaptic efficacy during a continuous train of presynaptic inputs, despite synaptic depression. DCS polarizes afferent axons and postsynaptic neurons, boosting cooperativity between synaptic inputs. Polarization of afferent neurons in upstream brain regions may modulate activity in the target brain region during transcranial DCS (tDCS). A statistical theory of coincident activity predicts that the diffuse and weak profile of current flow can be advantageous in enhancing connectivity between co-active brain regions...
April 23, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28435955/high-resolution-ftir-spectroscopy-of-trisulfane-hsssh-a-candidate-for-detecting-parity-violation-in-chiral-molecules
#11
S Albert, I Bolotova, Z Chen, C Fábri, M Quack, G Seyfang, D Zindel
We report the first successful high-resolution analyses of the Fourier transform infrared (FTIR) spectrum of trisulfane. A band centered at 861.0292 cm(-1) can be assigned unambiguously to the chiral trans conformer by means of ground state combination differences in comparison with known rotational spectra. A second band near 864.698 cm(-1) is tentatively assigned to the cis conformer by comparison with theory. The results are discussed in relation to their importance for experimental attempts to measure the parity violating energy difference ΔpvE between the ground states of enantiomers of chiral molecules...
April 24, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28435275/pathogenic-beliefs-among-patients-with-depressive-disorders
#12
Adam Neelapaijit, Tinakon Wongpakaran, Nahathai Wongpakaran, Kulvadee Thongpibul
INTRODUCTION: Pathogenic belief is a central construct within control-mastery theory, which is an integrated dynamic-cognitive-relational approach in psychotherapy. Pathogenic beliefs result from traumatic life experiences and are considered the root of any psychological disorders presented clinically. Nevertheless, how and what type of pathogenic beliefs are attributed to clinical depressive disorder is unknown. The present study aimed to examine this issue. PATIENTS AND METHODS: Thirty patients with depressive disorder, who came for psychotherapy at a psychotherapy clinic, were matched based on age and gender with healthy controls who were medical students...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28433774/the-role-of-compensatory-health-beliefs-in-eating-behavior-change-a-mixed-method-study
#13
Melanie A Amrein, Pamela Rackow, Jennifer Inauen, Theda Radtke, Urte Scholz
Compensatory Health Beliefs (CHBs), defined as beliefs that an unhealthy behavior can be compensated for by engaging in another healthy behavior, are assumed to hinder health behavior change. The aim of the present study was to investigate the role of CHBs for two distinct eating behaviors (increased fruit and vegetable consumption and eating fewer unhealthy snacks) with a mixed method approach. Participants (N = 232, mean age = 27.3 years, 76.3% women) were randomly assigned to a fruit and vegetable or an unhealthy snack condition...
April 19, 2017: Appetite
https://www.readbyqxmd.com/read/28433038/four-dimensional-coherent-electronic-raman-spectroscopy
#14
Elad Harel
The correlations between different quantum-mechanical degrees of freedom of molecular species dictate their chemical and physical properties. Generally, these correlations are reflected in the optical response of the system but in low-order or low-dimensionality measurement the signals are highly averaged. Here, we describe a novel four-dimensional coherent spectroscopic method that directly correlates within and between the manifold of electronic and vibrational states. The optical response theory is developed in terms of both resonant and non-resonant field-matter interactions...
April 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28433020/introducing-the-mean-field-approximation-to-cdft-mmpol-method-statistically-converged-equilibrium-and-nonequilibrium-free-energy-calculation-for-electron-transfer-reactions-in-condensed-phases
#15
Hiroshi Nakano, Hirofumi Sato
A new theoretical method to study electron transfer reactions in condensed phases is proposed by introducing the mean-field approximation into the constrained density functional theory/molecular mechanical method with a polarizable force field (CDFT/MMpol). The method enables us to efficiently calculate the statistically converged equilibrium and nonequilibrium free energies for diabatic states in an electron transfer reaction by virtue of the mean field approximation that drastically reduces the number of CDFT calculations...
April 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28431587/psychometric-properties-of-the-sdm-q-9-questionnaire-for-shared-decision-making-in-multiple-sclerosis-item-response-theory-modelling-and-confirmatory-factor-analysis
#16
Javier Ballesteros, Ester Moral, Luis Brieva, Elena Ruiz-Beato, Daniel Prefasi, Jorge Maurino
BACKGROUND: Shared decision-making is a cornerstone of patient-centred care. The 9-item Shared Decision-Making Questionnaire (SDM-Q-9) is a brief self-assessment tool for measuring patients' perceived level of involvement in decision-making related to their own treatment and care. Information related to the psychometric properties of the SDM-Q-9 for multiple sclerosis (MS) patients is limited. The objective of this study was to assess the performance of the items composing the SDM-Q-9 and its dimensional structure in patients with relapsing-remitting MS...
April 22, 2017: Health and Quality of Life Outcomes
https://www.readbyqxmd.com/read/28431312/melatonin-charge-transfer-complex-with-2-3-dichloro-5-6-dicyano-1-4-benzoquinone-molecular-structure-dft-studies-thermal-analyses-evaluation-of-biological-activity-and-utility-for-determination-of-melatonin-in-pure-and-dosage-forms
#17
Gehad G Mohamed, Maher M Hamed, Nadia G Zaki, Mohamed M Abdou, Marwa El-Badry Mohamed, Abanoub Mosaad Abdallah
A simple, accurate and fast spectrophotometric method for the quantitative determination of melatonin (ML) drug in its pure and pharmaceutical forms was developed based on the formation of its charge transfer complex with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) as an electron acceptor. The different conditions for this method were optimized accurately. The Lambert-Beer's law was found to be valid over the concentration range of 4-100μgmL(-1) ML. The solid form of the CT complex was structurally characterized by means of different spectral methods...
April 4, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28431080/systematic-review-of-measures-used-in-pictorial-cigarette-pack-warning-experiments
#18
Diane B Francis, Marissa G Hall, Seth M Noar, Kurt M Ribisl, Noel T Brewer
Background.: We sought to describe characteristics and psychometric properties of measures used in pictorial cigarette pack warning experiments, and provide recommendations for future studies. Methods.: Our systematic review identified 68 pictorial cigarette pack warning experiments conducted between 2000 and 2016 in 22 countries. Two independent coders coded all studies on study features, including sample characteristics, theoretical framework, and constructs assessed...
April 18, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28430505/excitation-gap-scaling-near-quantum-critical-three-dimensional-antiferromagnets
#19
M Lohöfer, S Wessel
By means of large-scale quantum Monte Carlo simulations, we examine the quantum critical scaling of the magnetic excitation gap (the triplon gap) in a three-dimensional dimerized quantum antiferromagnet, the bicubic lattice, and identify characteristic multiplicative logarithmic scaling corrections atop the leading mean-field behavior. These findings are in accord with field-theoretical predictions that are based on an effective description of the quantum critical system in terms of an asymptotically free field theory, which exhibits a logarithmic decay of the renormalized interaction strength upon approaching the quantum critical point...
April 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28430106/atomic-motions-in-the-layered-copper-pseudochalcogenide-cuncn-indicative-of-a-quantum-spin-liquid-scenario
#20
Andrei L Tchougreeff, Ralf Stoffel, Andreas Houben, Philipp Jacobs, Richard Dronskowski, Matej Pregelj, Andrej Zorko, Denis Arcon, Oksana Zaharko
We explore the thermodynamic properties of the layered copper(II) carbodiimide CuNCN by heat-capacity measurements and investigate the corresponding thermal atomic motions by means of neutron powder diffraction as well as inelastic neutron scattering. The experiments are complemented by a combination of density-functional calculations, phonon analysis and analytic theory. The existence of a soft flexural mode-bending of the layers, characteristic for the material structure-is established in the phonon spectrum of CuNCN by giving characteristic temperature-dependent contributions to the heat capacity and atomic displacement parameters...
April 21, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
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