Psychological Engagement in Choice and Judgment Under Risk and Uncertainty.

Theories of choice and judgment assume that agents behave rationally, choose the higher expected value option, and evaluate the choice consistently (Expected Utility Theory, Von Neumann, & Morgenstern, 1947). However, researchers in decision-making showed that human behaviour is different in choice and judgement tasks (Slovic & Lichtenstein, 1968; 1971; 1973). In this research, we propose that psychological engagement and control deprivation predict behavioural inconsistencies and utilitarian performance with judgment and choice. Moreover, we explore the influences of engagement and control deprivation on agent’s behaviours, while manipulating content of utility (Kusev et al., 2011, Hertwig & Gigerenzer 1999, Tversky & Kahneman, 1996) and decision reward (Kusev et al, 2013, Shafir et al., 2002)

Square vortex solitons with a large angular momentum

We show the existence of square shaped optical vortices with a large value of the angular momentum hosted in finite size laser beams which propagate in nonlinear media with a cubic-quintic nonlinearity. The light profiles take the form of rings with sharp boundaries and variable sizes depending on the power carried. Our stability analysis shows that these light distributions remain stable when propagate, probably for unlimited values of the angular momentum, provided the hosting beam is wide enough. This happens if the peak amplitude approaches a critical value which only depends on the nonlinear refractive index of the material. A variational approach allows us to calculate the main parameters involved. Our results add extra support to the concept of surface tension of light beams that can be considered as a trace of the existence of a liquid of light.Comment: 6 pages, 6 figures, submitted to Phys. Rev.

Electron detachment from negative ions in bichromatic laser field

Negative ion detachment in two-colour laser field is considered within the recent modification of Keldysh model which makes it quantitatively reliable. The general approach is illustrated by calculation of angular differential detachment rates, partial rates for particular ATD (Above Threshold Detachment) channels and total detachment rates for H$^-$ ion in bichromatic field with 1:2 frequency ratio. Both perturbative and strong field regimes are examined. Polar asymmetry and phase effects are quantitatively characterized with some new features revealed. Phase effects are found to result in a huge anisotropy factor $\sim 10^3$ in the electron angular distribution in the perturbative regime.Comment: 13 pages, 8 figures in separate files which are not incorporated in the latex file of the pape

Using data of optic sensors and pigment content in leaves for efficient diagnostics of nitrogen nutrition

Received: February 23rd, 2022 ; Accepted: May 16th, 2022 ; Published: August 12th, 2022 ; Correspondence: [email protected] monitoring and diagnostics of a condition of crops permit to make prompt and proper activities on dressing nitrogen fertilizers. This will allow the plants to use the nitrogen applied efficiently, and therefore reduce their use in field. Since nitrogen that has not been utilized by plants is able to escape into the atmosphere or be washed out of the soil with water. The most accurate diagnostic method is to determine the chemical composition of plants, but it takes quite a long time and requires laboratory conditions, which is not always possible in the field. One of the promising methods is photometric diagnostics of crops using optical instruments. Experiment is carried out in contrasting weather conditions, on soddy-podzolic soil with spring barley and spring rapeseed being investigated. Results of research show the efficiency of using optic sensors (N-testers) for efficient diagnostics of nitrogen nutrition of plants. The readings of the device (N-tester) were compared with the concentration of a and b chlorophyll, determined by a chemical method. Results of diagnostics with portable photometric device ‘Yara’ are correlating with concentrations of chlorophylls a (r=0.96) and b (r = 0.91) in spring rapeseed. Moreover, correlation of rapeseed yield and concentrations of chlorophylls a and b has quantity and inverse relation similar to device indication (r = -0.81 and r = -0.70 respectively). Results of diagnostics with N-tester ‘Spectroluxe’ are strongly correlating with chlorophyll concentration. Device indication correlates stronger with chlorophyll b concentration in spring barley and chlorophyll a concentration in spring rapeseed (rapeseed was investigated in dryer conditions). Thus, such a modern optical device as N-tester, whose action is based on measuring the concentration of leafy chlorophyll, can replace chemical methods and increase the efficiency of nitrogen fertilization, which means increasing the productivity of plants and reducing the negative impact of unreasonable use of nitrogen fertilizers

Para a questão de avaliar a credibilidade da empresa por bancos comerciais russos

Credit in the economy plays a double role, since it is a source of development for organizations (acquisition of fixed assets, modernization and reconstruction of production, launching of new projects, as well as the replacement of working capital) and an instrument for the generation of income for the bank and, in general, its main activity. To analyze the differences in the industry, we selected 30 companies. On the basis of its financial statements, we calculate the liquidity indices, the profitability of sales and the turnover of accounts payable and accounts receivable. The results showed that the reliability and financial stability of the clients reduce the bank risks, help the bank to obtain a higher income. It is considered that the bank deals not only with high-level customers: there are also customers among them who experience financial difficulties due to inadequate production organization, poor market research or poorly chosen strategy. The ability to correctly identify the client's capabilities, recognize their strengths and weaknesses is an important task for credit institutions. Therefore, these analytical indicators allow to objectively evaluate the creditworthiness of the borrower. However, in addition to the analysis of the financial ratios, it is necessary to evaluate the quality parameters, that is, analyze the client's credit history, the period of his service in the bank, the quality of the administration, his dependence on the suppliers and customers, and credit security.El crédito en la economía desempeña un doble papel, ya que es una fuente de desarrollo para las organizaciones (adquisición de activos fijos, modernización y reconstrucción de la producción, lanzamiento de nuevos proyectos, así como la reposición del capital de trabajo) y un instrumento para la generación de ingresos para el banco y, en general, su actividad principal. Para analizar las diferencias de la industria, seleccionamos 30 empresas. Sobre la base de sus estados contables (financieros), calculamos los índices de liquidez, la rentabilidad de las ventas y el volumen de negocios de las cuentas por pagar y las cuentas por cobrar. Los resultados demostraron que la confiabilidad y la estabilidad financiera de los clientes reducen los riesgos bancarios, ayudan al banco a obtener un ingreso más alto. Se considera que el banco trata no solo con los clientes de alto nivel: también hay clientes entre ellos que experimentan dificultades financieras debido a una producción inadecuada organización, pobre investigación de mercado o una estrategia mal elegida. La capacidad de identificar correctamente las capacidades del cliente, reconocer sus fortalezas y debilidades es una tarea importante para las instituciones de crédito. Por lo tanto, estos indicadores analíticos permiten evaluar objetivamente la solvencia crediticia del prestatario. Sin embargo, además del análisis de los ratios financieros, es necesario evaluar los parámetros de calidad, es decir, analizar el historial crediticio del cliente, elperíodo de su servicio en el banco, la calidad de la administración, su dependencia de los proveedores y clientes, y seguridad crediticia.O crédito na economia desempenha um papel duplo, uma vez que é uma fonte de desenvolvimento para as organizações (aquisição de ativos fixos, modernização e reconstrução da produção, lançamento de novos projetos, bem como a substituição do capital de giro) e um instrumento para a geração de renda para o banco e, em geral, sua principal atividade. Para analisar as diferenças na indústria, selecionamos 30 empresas. Com base em suas demonstrações financeiras, calculamos os índices de liquidez, a rentabilidade das vendas e o giro das contas a pagar e contas a receber. Os resultados mostraram que a confiabilidade e a estabilidade financeira dos clientes reduzem os riscos bancários, ajudando o banco a obter uma receita maior. Considera-se que o banco lida não apenas com clientes de alto nível: há também clientes entre eles que enfrentam dificuldades financeiras devido à organização inadequada da produção, pesquisa de mercado deficiente ou estratégia mal escolhida. A capacidade de identificar corretamente as capacidades do cliente, reconhecer seus pontos fortes e fracos é uma tarefa importante para as instituições de crédito. Portanto, esses indicadores analíticos permitem avaliar objetivamente a qualidade de crédito do tomador de empréstimo. No entanto, além da análise dos índices financeiros, é necessário avaliar os parâmetros de qualidade, ou seja, analisar o histórico de crédito do cliente, o período de seu atendimento no banco, a qualidade da administração, sua dependência dos fornecedores e clientes e segurança de crédito

Creation, doubling, and splitting, of vortices in intracavity second harmonic generation

We demonstrate generation and frequency doubling of unit charge vortices in a linear astigmatic resonator. Topological instability of the double charge harmonic vortices leads to well separated vortex cores that are shown to rotate, and become anisotropic, as the resonator is tuned across resonance

Adiabatic Theory of Electron Detachment from Negative Ions in Two-Color Laser Field

Negative ion detachment in bichromatic laser field is considered within the adiabatic theory. The latter represents a recent modification of the famous Keldysh model for multiphoton ionization which makes it quantitatively reliable. We calculate angular differential detachment rates, partial rates for particular ATD (Above Threshold Detachment) channels and total detachment rates for the Hydrogen ion in a bichromatic field with 1:3 frequency ratio and various phase differences. Reliability of the present, extremely simple approach is testified by comparison with much more elaborate earlier calculations.Comment: 22 pages, 6 Postscript figure

Excitonic effects on the two-color coherent control of interband transitions in bulk semiconductors

Quantum interference between one- and two-photon absorption pathways allows coherent control of interband transitions in unbiased bulk semiconductors; carrier population, carrier spin polarization, photocurrent injection, and spin current injection may all be controlled. We extend the theory of these processes to include the electron-hole interaction. Our focus is on photon energies that excite carriers above the band edge, but close enough to it so that transition amplitudes based on low order expansions in $\mathbf{k}$ are applicable; both allowed-allowed and allowed-forbidden two-photon transition amplitudes are included. Analytic solutions are obtained using the effective mass theory of Wannier excitons; degenerate bands are accounted for, but envelope-hole coupling is neglected. We find a Coulomb enhancement of two-color coherent control process, and relate it to the Coulomb enhancements of one- and two-photon absorption. In addition, we find a frequency dependent phase shift in the dependence of photocurrent and spin current on the optical phases. The phase shift decreases monotonically from $\pi /2$ at the band edge to 0 over an energy range governed by the exciton binding energy. It is the difference between the partial wave phase shifts of the electron-hole envelope function reached by one- and two-photon pathways.Comment: 31 pages, 4 figures, to be published in Phys. Rev.

Time-reversal violating rotation of polarization plane of light in gas placed in electric field

Rotation of polarization plane of light in gas placed in electric field is considered. Different factors causing this phenomenon are investigated. Angle of polarization plane rotation for transition 6S_{1/2} - 7S_{1/2} in cesium (lambda=539 nm) is estimated. The possibility to observe this effect experimentally is discussed.Comment: 10 pages, Late

Testing of CP, CPT and causality violation with the light propagation in vacuum in presence of the uniform electric and magnetic fields

We have considered the structure of the fundamental symmetry violating part of the photon refractive index in vacuum in the presence of constant electric and magnetic fields. This part of the refractive index can, in principle, contain CPT symmetry breaking terms. Some of the terms violate Lorentz invariance, whereas the others violate locality and causality. Estimates of these effects, using laser experiments are considered.Comment: 12 page