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Robert M Nosofsky, Jason M Gold
Research is reported that provides evidence for a significant role of mixed states and guessing processes in tasks of visual working memory (VWM). Subjects engaged in a complete-identification VWM task. The stimulus set consisted of 16 colors roughly equally spaced around a color circle. On each trial, a memory-set drawn from the colors was briefly presented, followed by a location probe. Subjects attempted to reproduce the color of the probed item by clicking on the appropriate response button of a discrete color wheel...
October 16, 2017: Journal of Experimental Psychology. Human Perception and Performance
Tom J P Irons, James W Furness, Matthew S Ryley, Jan Zemen, Trygve Helgaker, Andrew M Teale
A recently proposed variation principle [N. I. Gidopoulos, Phys. Rev. A 83, 040502(R) (2011)] for the determination of Kohn-Sham effective potentials is examined and extended to arbitrary electron-interaction strengths and to mixed states. Comparisons are drawn with Lieb's convex-conjugate functional, which allows for the determination of a potential associated with a given electron density by maximization, yielding the Kohn-Sham potential for a non-interacting system. The mathematical structure of the two functionals is shown to be intrinsically related; the variation principle put forward by Gidopoulos may be expressed in terms of the Lieb functional...
October 7, 2017: Journal of Chemical Physics
Jan Broekaert, Irina Basieva, Pawel Blasiak, Emmanuel M Pothos
Quantum probability theory (QPT) has provided a novel, rich mathematical framework for cognitive modelling, especially for situations which appear paradoxical from classical perspectives. This work concerns the dynamical aspects of QPT, as relevant to cognitive modelling. We aspire to shed light on how the mind's driving potentials (encoded in Hamiltonian and Lindbladian operators) impact the evolution of a mental state. Some existing QPT cognitive models do employ dynamical aspects when considering how a mental state changes with time, but it is often the case that several simplifying assumptions are introduced...
November 13, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
Giuseppe Tavormina, Francesco Franza, Giuseppe Stranieri, Luigi Juli, Maria Rosaria Juli
The rating scale "G.T. MSRS" has been designed to improve the clinical effectiveness of the clinician psychiatrists, by enabling them to make an early "general" diagnosis of mixed states. The knowledge of the clinical features of the mixed states and of the symptoms of the "mixity" of mood disorders is crucial: to mis-diagnose or mis-treat patients with these symptoms may increase the suicide risk and make worse the evolution of mood disorders going to the dysphoric state. This study is the second validation study of the "G...
September 2017: Psychiatria Danubina
Seishi Shimizu, Nobuyuki Matubayasi
Solubilization or mixing in the presence of hydrotropes is often accompanied by the increase of scattering intensity. When the scattering corresponding to mesoscale structuring grows, the mixed state is called the "pre-ouzo" aggregate, which appears often and is distinct from critical density fluctuation, yet its precise mechanism of appearance is still obscure. Combining the results from the theories of scattering and thermodynamic phase stability with differential geometry, we have constructed a theory which can account for hydrotrope mixing thermodynamics and the pre-ouzo effect in a unified manner...
October 11, 2017: Physical Chemistry Chemical Physics: PCCP
Gustavo H Vázquez, María Lolich, Casimiro Cabrera, Ruzica Jokic, Dusan Kolar, Leonardo Tondo, Ross J Baldessarini
BACKGROUND: The DSM-5 mixed features specifier for mood disorders encourages renewed interest in mixed states and led us to pool research findings regarding prevalence of mixed features in episodes of major depressive (MDD) and bipolar disorders (BD). METHODS: We systematically searched to July 2017 for reports on mixed symptoms in depressive episodes of MDD and in depression and mania or hypomania in types I and II BD. For primary mood-states and diagnostic groups we compared rates of the presence of mixed symptoms: as defined by DSM-5 (≥3 features opposite to the dominant mood-polarity but not overlapping those of the primary disorder) or as having any ≥3 features of opposite polarity...
January 1, 2018: Journal of Affective Disorders
Gabor Gaszner, Gabor Barna, Peter Dome
The history of antipsychotics began with the discovery of chlorpromazine in the 1950s. Since then this group of medications has become one of the most important element of the armamentarium of psychopharmacology. While initially these pharmacons were used in the treatment of psychotic states (including psychotic mania) in the last approximately 10-15 years new indications - such as treatment of depressive, manic and mixed states and also mood-stabilization in bipolar disorder and also the treatment of major depressive disorder - for several second-generation antipsychotic (SGA) agents have been introduced...
June 2017: Neuropsychopharmacologia Hungarica
Maria Montagna, Riccardo Spezia, Enrico Bodo
We have studied the solvation of Th(4+) in water, in dimethyl sulfoxide (DMSO), and in their equimolar mixture by using molecular dynamics based on an Amoeba-derived polarizable force field. We have performed an extended structural analysis in order to provide a complete picture of the chemical-physical features of the interaction of Th(4+) with the two solvents in their pure and mixed states. Through our simulations we found that, very likely, the first solvation shell in DMSO is not unlike the one found in pure water and contains 9 solvent molecules...
October 2, 2017: Inorganic Chemistry
L V Olexenko, D E Vybornykh
This literature review differentially describes mental disorders in patients with Hodgkin's lymphoma (HL) with an emphasis on psychotic disorders, affective states and adjustment disorders. Psychotic disorders observed in patients with HL include affective, delusional conditions, delirium. There are different psychogenic states among the adjustment disorders. Attention is drawn to the frequency of anxious, depressive or mixed states. Conversion disorders and behavioral disorders that lead to non-compliance in patients with HL are described as well...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
W J Choi, Y I Seo, D Ahmad, Yong Seung Kwon
We report on the thermally activated flux flow dependency on the doping dependent mixed state in NaFe1-x Co x As (x = 0.01, 0.03, and 0.07) crystals using the magnetoresistivity in the case of B//c-axis and B//ab-plane. It was found clearly that irrespective of the doping ratio, magnetoresistivity showed a distinct tail just above the T c,offset associated with the thermally activated flux flow (TAFF) in our crystals. Furthermore, in TAFF region the temperature dependence of the activation energy follows the relation [Formula: see text] with q = 1...
September 7, 2017: Scientific Reports
Li Li, Ping Wu, Shiping Zhang, Li Wang
The vertical, horizontal, and three-dimensional (3D) distribution of binary particles with different diameters are investigated simultaneously in a cylindrical container under coupling vibration and airflow. Airflow is blown into the vertically vibrating granular bed from its bottom with vibration frequency of f = 15, 30, and 45 Hz; vibration acceleration Γ = 2-7; and air velocity u = 0-1.82 m s(-1) (fluidization number u/umf = 0-1.49). In our experiments, several distribution states have been observed, such as the mixing state, where particles are uniformly mixed; Brazil nut separation (BN), where large particles rise to the top; reverse Brazil nut separation (RBN), where large particles sink to the bottom; horizontal separation (HS), where binary particles separate horizontally; and combined distribution of BN/RBN and HS, in which one type of particles is above the other and close to one side of the container wall...
October 11, 2017: Soft Matter
Jane E Persons, William H Coryell, David A Solomon, Martin B Keller, Jean Endicott, Jess G Fiedorowicz
OBJECTIVE: To assess whether suicidal behavior during mixed states exceeds that expected from the manic or depressive components alone. METHODS: This study included 429 participants with bipolar disorder from the National Institute of Mental Health Collaborative Depression Study (CDS). Mood and suicidal behavior were captured using the Longitudinal Interval Follow-up Evaluation and the Schedule of Affective Disorders and Schizophrenia. Suicidal behavior during each mood state, relative to euthymia, was analyzed using Cox regression to allow for repeated events, with a frailty term to account for intra-participant correlation...
August 23, 2017: Bipolar Disorders
Markus Koch, Marina Saphiannikova, Svetlana Santer, Olga Guskova
This study focuses on comparing physical properties of photoisomers of an azobenzene star with benzene-1,3,5-tricarboxamide core. Three azobenzene arms of the molecule undergo a reversible trans-cis isomerization upon UV-vis light illumination giving rise to multiple states from the planar all-trans one, via two mixed states to the kinked all-cis isomer. Employing density functional theory, we characterize the structural and photophysical properties of each state indicating a role the planar core plays in the coupling between azobenzene chromophores...
September 8, 2017: Journal of Physical Chemistry. B
Jian Zhang, Lei Liu, Yuanyuan Wang, Yong Ren, Xin Wang, Zongbo Shi, Daizhou Zhang, Huizheng Che, Hujia Zhao, Yanfei Liu, Hongya Niu, Jianmin Chen, Xiaoye Zhang, A P Lingaswamy, Zifa Wang, Weijun Li
The characteristics of aerosol particles have been poorly evaluated even though haze episodes frequently occur in winter in Northeast China. OC/EC analysis, ion chromatography, and transmission electron microscopy (TEM) were used to investigate the organic carbon (OC) and elemental carbon (EC), and soluble ions in PM2.5 and the mixing state of individual particles during a severe wintertime haze episode in Northeast China. The organic matter (OM), NH4(+), SO4(2-), and NO3(-) concentrations in PM2.5 were 89...
August 12, 2017: Environmental Pollution
Mehmet Emre Tasgin
We derive a many-particle entanglement criterion for mixed states using a relation between single-mode and many-particle nonclassicalities. The criterion relies on the measurement of collective spin observables. It works very well not only in the vicinity of the Dicke states, but also for the superpositions of Dicke states: superradiant ground states of finite or infinite number of particles and time evolution of single-photon superradiance from an extended sample where random phases appear. We also obtain a criterion for ensemble-field entanglement, which is successful for such kinds of states...
July 21, 2017: Physical Review Letters
Bertina Fisher, Larisa Patlagan
VO₂ is the prototype material for insulator-metal transition (IMT). Its transition at TIMT = 340 K is fast and consists of a large resistance jump (up to approximately five orders of magnitude), a large change in its optical properties in the visible range, and symmetry change from monoclinic to tetragonal (expansion by 1% along the tetragonal c-axis and 0.5% contraction in the perpendicular direction). It is a candidate for potential applications such as smart windows, fast optoelectronic switches, and field-effect transistors...
May 19, 2017: Materials
Rakesh Das, Manoranjan Kumar, Shradha Mishra
We introduce a lattice model for active nematic composed of self-propelled apolar particles, study its different ordering states in the density-temperature parameter space, and compare with the corresponding equilibrium model. The active particles interact with their neighbours within the framework of the Lebwohl-Lasher model, and move anisotropically along their orientation to an unoccupied nearest neighbour lattice site. An interplay of the activity, thermal fluctuations and density gives rise distinct states in the system...
August 1, 2017: Scientific Reports
James R Phelps, James James
Around the world, psychiatrists are in exceptionally short supply. The majority of mental health treatment is delivered in primary care. In the United States, the Collaborative Care Model (CCM) addresses the shortfall of psychiatrists by providing indirect consultation in primary care. A Cochrane meta-analysis affirms the efficacy this model for depression and anxiety. However, our experience with the CCM suggests that most patients referred for consultation have problems far more complex than simple depression and anxiety...
August 2017: Medical Hypotheses
Vincenzo Alba, Maurizio Fagotti
Nonequilibrium time evolution in isolated many-body quantum systems generally results in thermalization. However, the relaxation process can be very slow, and quasistationary nonthermal plateaux are often observed at intermediate times. The paradigmatic example is a quantum quench in an integrable model with weak integrability breaking; for a long time, the state cannot escape the constraints imposed by the approximate integrability. We unveil a new mechanism of prethermalization, based on the presence of a symmetry of the prequench Hamiltonian, which is spontaneously broken at zero temperature and is explicitly broken by the postquench Hamiltonian...
July 7, 2017: Physical Review Letters
Bruno Mera, Chrysoula Vlachou, Nikola Paunković, Vítor R Vieira
We study the behavior of the Uhlmann connection in systems of fermions undergoing phase transitions. In particular, we analyze some of the paradigmatic cases of topological insulators and superconductors in one dimension, as well as the BCS theory of superconductivity in three dimensions. We show that the Uhlmann connection signals phase transitions in which the eigenbasis of the state of the system changes. Moreover, using the established fidelity approach and the study of the edge states, we show the absence of thermally driven phase transitions in the case of topological insulators and superconductors...
July 7, 2017: Physical Review Letters
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