Demonstration of Einstein-Podolsky-Rosen Steering Using Hybrid Continuous- and Discrete-Variable Entanglement of Light

Einstein-Podolsky-Rosen steering is known to be a key resource for one-sided device-independent quantum information protocols. Here we demonstrate steering using hybrid entanglement between continuous- and discrete-variable optical qubits. To this end, we report on suitable steering inequalities and detail the implementation and requirements for this demonstration. Steering is experimentally certified by observing a violation by more than 5 standard deviations. Our results illustrate the potential of optical hybrid entanglement for applications in heterogeneous quantum networks that would interconnect disparate physical platforms and encodings

A USB Interfaced Motion Capture Sensor, Using Tri-Axis Magnetic/Inertial Sensors For Use In Kinematic Studies

An unobtrusive tri-axis magnetic and gravitational field transducer for use in kinematic tracking is presented. Outlined is a novel approach for using such a sensor i.e. providing a Universal Serial Bus (USB) interface, allowing the direct utilization of the logical topology of the standard, making scalable deployment possible. Furthermore design considerations; construction and performance of the sensor are analysed and discussed in detail

A USB Interfaced Motion Capture Sensor, Using Tri-Axis Magnetic/Inertial Sensors For Use In Kinematic Studies

An unobtrusive tri-axis magnetic and gravitational field transducer for use in kinematic tracking is presented. Outlined is a novel approach for using such a sensor i.e. providing a Universal Serial Bus (USB) interface, allowing the direct utilization of the logical topology of the standard, making scalable deployment possible. Furthermore design considerations; construction and performance of the sensor are analysed and discussed in detail

Sphingolipid Long-Chain Base Hydroxylation Is Important for Growth and Regulation of Sphingolipid Content and Composition in \u3ci\u3eArabidopsis\u3c/i\u3e

Sphingolipids are structural components of endomembranes and function through their metabolites as bioactive regulators of cellular processes such as programmed cell death. A characteristic feature of plant sphingolipids is their high content of trihydroxy long-chain bases (LCBs) that are produced by the LCB C-4 hydroxylase. To determine the functional significance of trihydroxy LCBs in plants, T-DNA double mutants and RNA interference suppression lines were generated for the two Arabidopsis thaliana LCB C-4 hydroxylase genes Sphingoid Base Hydroxylase1 (SBH1) and SBH2. These plants displayed reductions in growth that were dependent on the content of trihydroxy LCBs in sphingolipids. Double sbh1 sbh2 mutants, which completely lacked trihydroxy LCBs, were severely dwarfed, did not progress from vegetative to reproductive growth, and had enhanced expression of programmed cell death associated–genes. Furthermore, the total content of sphingolipids on a dry weight basis increased as the relative amounts of trihydroxy LCBs decreased. In trihydroxy LCB–null mutants, sphingolipid content was ~2.5-fold higher than that in wild-type plants. Increases in sphingolipid content resulted from the accumulation of molecular species with C16 fatty acids rather than with very-long-chain fatty acids, which are more commonly enriched in plant sphingolipids, and were accompanied by decreases in amounts of C16-containing species of chloroplast lipids. Overall, these results indicate that trihydroxy LCB synthesis plays a central role in maintaining growth and mediating the total content and fatty acid composition of sphingolipids in plants

The E-Motion System: Motion Capture and Movement-based Biofeedback Game

This paper describes the development of a movement based training game aimed at teaching users an exercise program. This is achieved through analysing body posture as the player performs the exercise routine while concurrently receiving real-time feedback from the game. An in-depth post game feedback system also features, giving the player a detailed account of their performance after completing the exercise routine. Analysis of the player’s posture is achieved by placing orientation sensors on appropriate parts of the players’ body. The game can then read and interpret data from these sensors reconstructing a live 3D model of the players’ posture. The game has the kinematic data of an expert performing the current exercise routine stored in memory, which is compared to the kinematic data of the current player and appropriate feedback is given to aid the player in performing the exercise. The theme of the prototype game currently developed is that of a yoga training game (E-Yoga)

Reducing Sensor Density Requirements For Kinematic Controllers In A Full Posture Yoga Gaming Application

Integration of whole body movements with virtual reality environments and computer games has many benefits for exercise training and rehabilitation. Such applications can serve as a virtual personal trainer for different exercise therapies. Current examples of this are based on provision of visual feedback to the user via a webcam yet these allow the player to deviate from the desired exercise sequence without direct warning or feedback. This can be solved by tracking body movements using orientation sensors. However, tracking and providing real time feedback for whole body movements for exercise therapies such as Yoga can prove very complex and require the use of a large number of sensors on body segments. In this paper we describe a methodological approach that can facilitate the development of a body movement driven Yoga exercise computer game that can discriminate player performance level with the use of minimum instrumentation

Local distinguishability of quantum states in infinite dimensional systems

We investigate local distinguishability of quantum states by use of the convex analysis about joint numerical range of operators on a Hilbert space. We show that any two orthogonal pure states are distinguishable by local operations and classical communications, even for infinite dimensional systems. An estimate of the local discrimination probability is also given for some family of more than two pure states

A Real Time Motion Capture System, Using USB Based Tri-Axis Magnetic and Inertial Sensors for Movement Based Relaxation

scalable motion capture system based on multiple orientation sensors, each consisting of tri-axis magnetic and gravitational field transducers, for use in kinematic studies; is presented. Outlined is a novel system capable of accessing real time data from multiple sensors, via one universal serial bus host, using a dynamic link library. In addition, design considerations; implementation and performance of the system are analysed and discussed

Timescale of Stellar Feedback-Driven Turbulence in the ISM: A Deep Dive into UGC 4305

Understanding the interplay of stellar feedback and turbulence in the interstellar medium (ISM) is essential to modeling the evolution of galaxies. To determine the timescales over which stellar feedback drives turbulence in the ISM, we performed a spatially resolved, multi-wavelength study of the nearby star-forming dwarf galaxy UGC 4305 (aka Holmberg II). As indicators of turbulence on local scales (400 pc), we utilized ionized gas velocity dispersion derived from IFU H$\alpha$ observations and atomic gas velocity dispersion and energy surface densities derived from HI synthesis observations with the Very Large Array. These indicators of turbulence were tested against star formation histories over the past 560 Myr derived from Color-Magnitude Diagrams (CMD) using Spearman's rank correlation coefficient. The strongest correlation identified at the 400 pc scale is between measures of HI turbulence and star formation 70-140 Myr ago. We repeated our analysis of UGC 4305's current turbulence and past star formation activity on multiple physical scales ($\sim$560, and 800 pc) to determine if there are indications of changes in the correlation timescale with changes to the physical scale. No notable correlations were found at larger physical scales emphasizing the importance of analyzing star formation driven turbulence as a local phenomenon.Comment: 17 pages, 9 figure, accepted to A

Reducing Sensor Density Requirements For Kinematic Controllers In A Full Posture Yoga Gaming Application

Integration of whole body movements with virtual reality environments and computer games has many benefits for exercise training and rehabilitation. Such applications can serve as a virtual personal trainer for different exercise therapies. Current examples of this are based on provision of visual feedback to the user via a webcam yet these allow the player to deviate from the desired exercise sequence without direct warning or feedback. This can be solved by tracking body movements using orientation sensors. However, tracking and providing real time feedback for whole body movements for exercise therapies such as Yoga can prove very complex and require the use of a large number of sensors on body segments. In this paper we describe a methodological approach that can facilitate the development of a body movement driven Yoga exercise computer game that can discriminate player performance level with the use of minimum instrumentation