Experimental non-local generation of entanglement from independent sources

We experimentally demonstrate a non-local generation of entanglement from two independent photonic sources in an ancilla-free process . Two bosons (photons) are entangled in polarization space by steering into a novel interferometer setup, in which they have never meet each other. The entangled photons are delivered to polarization analyzers in different sites, respectively, and a non-local interaction is observed. Entanglement is further verified by the way of the measured violation of a CHSH type Bell's inequality with S-values of 2.54 and 27 standard deviations. Our results will shine a new light into the understanding on how quantum mechanics works, have possible philosophic consequences on the one hand and provide an essential element for quantum information processing on the other hand. Potential applications of our results are briefly discussed.Comment: 5 pages, 4 figure

Behavior-Based Simulation Approach for the Capacity and Traffic Operational Characteristic Study of Four-Way-Stop-Controlled Intersections

The objective of the proposed research is to study the traffic operational characteristics at four-way-stop-controlled (FWSC) intersections with single -lane approaches. Observational data were collected at six FWSC intersections in Lawrence, Kansas. Then, the necessary traffic data were extracted from the videotapes using data processing programs. With the collected data, a driver behavior based simulation approach was presented to estimate the 95th percentile queue length, control delay and service time. After calibration and validation, the simulation model was used to study characteristics of the queue length, control delay, and service time at FWSC intersections. Finally, intersection capacities were estimated under different traffic conditions

About some Characteristics of Black English

Back English is one of the varieties of so called Standard English spoken by the Black Americans. It has its own characteristics and uniqueness. We study it only because we want to know it better in order to understa nd and communicate with each other better. Key words: black English; characteristics; variety; grammar Résumé: L’anglaise des Noirs est l'une des variétés de ce qu'on appelle l'anglais standard parlé par les Noirs américains. Elle a ses propres caractéristiques et ses particularités. Nous l'étudions dans cet article parce que nous voulons mieux le connaître afin de se comprendre et de se communiquer mieux. Mots-Clés: l’anglais des noirs；charactéristiques；variété, grammair

How to Promote Learning Behavior? Exploring the Role of Gamification in Mobile Learning Apps from the Perspective of Affordance

With the rapid popularization of mobile network, various gamification elements have been widely used in many mobile learning apps. However, there is no complete model to explain the actual effect of these gamification elements on promoting user learning behavior. This paper analyzes the effects of two types of gamification affordance elements on user learning behavior in mobile learning apps based on affordance theory and combines with an elaboration likelihood model. The datas are collected and analyzed from 23641 Shanbay Word users. The result shows that achievement visualization affordance and competition affordance affect users learning behavior negatively, user learning intention plays a mediating role between achievement visualization affordance, competition affordance and user learning behavior, team learning climate plays a moderating role between user learning intention, achievement visualization affordance and competition affordance

Clinical application of retinal oscillatory potential

Retinal oscillatory potential has been widely applied in diagnosis, condition variety and prognostic of eye disease. It is believed that oscillatory potentials are generated from the inner retina, and can objectively reflect blood circulation in inner retina. Now the applications and prospects of retinal oscillatory potential are briefly introduced, in order to promote the popularity of this technology