3,774 research outputs found

    Teleportation of an arbitrary multipartite state via photonic Faraday rotation

    Full text link
    We propose a practical scheme for deterministically teleporting an arbitrary multipartite state, either product or entangled, using Faraday rotation of the photonic polarization. Our scheme, based on the input-output process of single-photon pulses regarding cavities, works in low-Q cavities and only involves virtual excitation of the atoms, which is insensitive to both cavity decay and atomic spontaneous emission. Besides, the Bell-state measurement is accomplished by the Faraday rotation plus product-state measurements, which could much relax the experimental difficulty to realize the Bell-state measurement by the CNOT operation.Comment: 11 pages, 2 figures

    Seguimiento online de la conductividad eléctrica del vino inducido por ultrasonido

    Get PDF
    We assessed the effects of ultrasonic frequency, power, temperature and exposure time on the electric conductivity (EC) of wine to evaluate the feasibility of the online EC monitoring as an indicator to reflect the changes of wine quality under the ultrasound irradiation. Results showed that the continuously monitored curve of EC was significantly different from the values recorded at the beginning and end of sonication. An abrupt rise and a rapid drop of wine EC were observed at the start and end points of sonication, respectively, in all working conditions. With regards to the assayed wine temperatures, the effect exerted by this parameter on EC before sonication was totally different from that observed when the samples were cooled down after ultrasound treatment. All in all, these results suggest that the online EC monitoring of wine may be used as an efficient indicator to control and reflect the real changes of wine under ultrasound treatment.Hemos estudiado los efectos de la frecuencia de ultrasonido, la potencia, la temperatura y el tiempo de exposición en la conductividad eléctrica (EC) del vino para evaluar la viabilidad del seguimiento EC online como indicador para reflejar los cambios en la calidad del vino bajo irradiación de ultrasonido. Los resultados mostraron que la curva de EC supervisada en continuo fue significativamente diferente de los valores registrados al principio y al final de la sonicación. Se observaron un aumento brusco y una rápida caída de EC del vino al principio y al final de la sonicación, respectivamente, para todas las condiciones estudiadas. En referencia a las temperaturas testadas del vino, el efecto ejercido por este parámetro en EC antes de la sonicación fue totalmente distinto de aquel observado cuando se enfriaron las muestras después del tratamiento de ultrasonido. En resumen, estos resultados sugieren que el seguimiento online de EC del vino podría ser utilizado como un indicador eficiente para controlar y reflejar los cambios reales en el vino con el uso de tratamiento de ultrasonido.National Natural Science Foundation of China [grant number 31101324]Natural Science Foundation of Shaanxi Province, China [grant number 2015JM3097]Technology Transfer Promotion Project of Xi’an, Shaanxi Province, China [grant number CXY1434(5)]Fundamental Research Funds for the Central Universities of China [grant number GK201302039], [grant number GK201404006], [grant number GK201505128

    An Exploratory, Correlational, Self-Rater Study on Authentic Leadership Values of Adventist Local Conference Chief Financial Officers in the United States

    Get PDF
    The Problem Seventh-day Adventist (SDA) local conference treasurers, or Chief Financial Officers, are trusted by church members to manage the finances of the church and provide financial leadership, yet the denomination does not know how treasurers develop their values and leadership capacity as financial administrators. This study examined how treasurers compare with the leadership values of morality, integrity, and fairness prevalent today in positive forms of leadership theories. It explores SDA treasurer or financial officer self-assessment with the rating that their team members provide, allowing us to know the authenticity of their values as leaders. Method This is a census of a population composed of 50 local conference treasurers, leaders, and 148 followers composed of associates in treasury work and academy treasurers. The participants responded to the Authentic Leadership Questionnaire 1.0 online. Their responses allowed us to know how treasurers see themselves, and how their followers see them. The instrument tested both groups in four dimensions: (a) Relational Transparency, (b) Balanced Processing of Opinions, (c) Ethical/Moral Values, and (d) Self-Awareness, and their responses were processed anonymously online by Mind Garden, Inc. The aggregate responses were analyzed in SPSS. Conclusions The results indicate that the self-perceptions of the leaders are significantly higher than the perceptions reported by their followers. The follower group of associates in treasury consistently gave lower means (μ) than did the academy treasurers. The role played by the participants in the study (local conference treasurers, associates in treasury, and academy treasurers) was significantly related to the responses they provided. The leaders’ personal characteristics are significantly related to their own self-perception about authentic leadership, and followers’ personal characteristics are also significantly related to how they perceive the authenticity of their leaders. Beta (β) coefficients of treasurers’ personal characteristics indicate that the longer they work for the denomination, the less authentic they are as leaders. The longer followers work for the denomination, the less they believe in their leaders as authentic leaders. The disagreement in the perceptions of leaders and followers may be an indication of a disconnect, possibly a degree of discomfort, distrust, skepticism or dissatisfaction made evident by the lower statistical means of the followers. This erosion of influence points to issues of power, authority, and leadership within the Adventist church structure. Conference treasurers may not be fulfilling their leadership role appropriately
    • …
    corecore