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Pulsar in a Stellar Triple System Makes Unique Gravitational ..

By very accurately recording the time of arrival of the pulsar's pulses, the scientists were able to calculate the geometry of the system and the masses of the stars with unparalleled precision.

06.01.2014 · The discovery of a millisecond pulsar in a triple system ..

Transportation systems are one of the most essential infrastructures for our social activities and daily life. However, in densely populated area, traffic congestion, air pollution, traffic accidents and delayed public transportation annoy our daily life, while, in rural area, city area has been widely spreading due to motorization and the city center has been empty. It causes our society to decline sustainability, livability, and eco-friendliness. Our mission is to come up with smart and optimal transportation systems with “intelligence” and to achieve livable society. The fundamental research consists of the following three steps; i) getting better knowledge about the nature of transportation network dynamics, ii) developing methods to acquire these in sights, and iii) using this knowledge to come up with innovative traffic management approaches. The current research topics cover the following area: modeling traffic flow and driving behavior, developing traffic data collection technique and active traffic management systems, and analyzing traffic safety and travel behavior.

A STATE CHANGE IN THE MISSING LINK BINARY PULSAR SYSTEM PSR ..

PURE DATA forum~ / Granular synthesis

Soft Robotics Laboratory is investigating robots with novel functions brought by soft materials and its related technologies including soft sensors and actuators. So far, hard materials are mainly used in robotic systems. Contrary, creatures are made of hard and soft materials, suggesting us introducing soft materials into robotics will realize novel functions as creatures. Research topics are 1) soft-bodied robots including soft-fingered hands and tensegrity robots, 2) soft tactile sensors that can detect normal pressure, slippage, and proximity, 3) micro pneumatic valves and their applications to soft-bodied robots, 4) modeling of human tissue and organs such as vitreous and flatfoot, 5) handling of soft objects such as food and wires, and 6) aerial manipulation performed by hands equipped with multi-rotor robots.

Light is an electromagnetic wave, the same as a radio wave, however, the frequency is higher than that of a radio waveby three digits or more, and hence ultrafast measurements canbe made by creating a signal faster than that of a microwave. In the time domain, light signals at the time interval of a pico-second (1/1trillionth of a second)/femto-second (1/1000 trillionth of a second) are expected, and we are researching thecontrol of the light waveform. Also the expectation of a light signal at an interval of an atto-second (1/100 quadrillionth of a second) is increasing in recent years. These ultrahigh-speed signals have expanded the spectrum by a few terahertz or more, and their application in the fields of communication and measurement are therefore being studied. This laboratory aims at developing a new light source through shaping optical waveforms and optical frequencies, the generation of a broadband optical frequency comb through research that is based on optical modulation and laser oscillation control to manipulate light signals using electric signals.

Index of Packages Matching 'numpy' : Python Package …

06/01/2014 · Pulsar in stellar triple system makes unique gravitational laboratory

We continue our analysis of the Galactic oxygen-rich supernova remnant (SNR) G292.0+1.8, which was observed with the Chandra X-Ray Observatory. The high angular resolution Chandra data resolve metal-rich ejecta knots as well as the shocked circumstellar medium. X-ray emission from the ejecta material in G292.0+1.8 is dominated by highly ionized O, Ne, and Mg. Measured abundance ratios suggest that this material was produced during the hydrostatic evolution of the massive progenitor star. In contrast to Cassiopeia A, there is little evidence for X-ray-emitting ejecta from explosive nucleosynthesis, i.e., material enriched in Si, S, and particularly, Fe. This limits the amount of mixing or overturning of deep ejecta material in G292.0+1.8 and suggests that the ejecta are strongly stratified by composition and that the reverse shock has not propagated to the Si/S- or Fe-rich zones. On the other hand, the bright equatorial belt is dominated by X-ray emission with normal chemical composition, which supports shocked dense circumstellar material for its origin. We find that the thermal pressure in the SNR is much higher than the pressure in the pulsar wind nebula (PWN), indicating that the reverse shock has not yet begun to interact with the PWN.

N2 - We continue our analysis of the Galactic oxygen-rich supernova remnant (SNR) G292.0+1.8, which was observed with the Chandra X-Ray Observatory. The high angular resolution Chandra data resolve metal-rich ejecta knots as well as the shocked circumstellar medium. X-ray emission from the ejecta material in G292.0+1.8 is dominated by highly ionized O, Ne, and Mg. Measured abundance ratios suggest that this material was produced during the hydrostatic evolution of the massive progenitor star. In contrast to Cassiopeia A, there is little evidence for X-ray-emitting ejecta from explosive nucleosynthesis, i.e., material enriched in Si, S, and particularly, Fe. This limits the amount of mixing or overturning of deep ejecta material in G292.0+1.8 and suggests that the ejecta are strongly stratified by composition and that the reverse shock has not propagated to the Si/S- or Fe-rich zones. On the other hand, the bright equatorial belt is dominated by X-ray emission with normal chemical composition, which supports shocked dense circumstellar material for its origin. We find that the thermal pressure in the SNR is much higher than the pressure in the pulsar wind nebula (PWN), indicating that the reverse shock has not yet begun to interact with the PWN.

This is a short demonstration of Granita, a minimalist granular synthesis patch for Pd (Pure Data) mainly for working on pre-existing recordings.
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LORNE NELSON - Bishop's University

The main interests of the manipulation laboratory are to design controllers of robotic hands and arms to enable dexterous motion such as grasping and reaching, and to develop robotic systems such as tendon-driven mechanisms. The tendon-driven mechanism is one of the technologies used in robotic transmission systems to drive a linkage mechanism with the use of wires, and is often used to perform features of the musculoskeletal system. We are currently analyzing tendon-driven mechanisms to understand the important characteristics of musculoskeletal systems, such as variable stiffness properties and the connected motion shown at the interphalangeal joints of the index finger. We are also developing other mechanical systems such as a new mass measurement system, an ankle-foot orthotic system, and a tele-operation system.

Professor Nelson received his Ph.D

We are aiming at the realization of a micro power source of an ultra-small turbo machine etc. by putting micro machine system technology to practical use. The micro power source has been assumed to be a propulsion engine loaded on an ultra-small flying object. We are implementing element design and test production of centrifugal compressor, a can type premixing hydrogen combustor, a radial flow turbine and gas bearing etc configured with an impeller diffuser based on the thermodynamic cycle required for the propulsion engine. We are also implementing structural fluid design by dealing with the centrifugal force, thermal stress and heat conduction problems from the point of view of solid mechanics and the transonic fluid problem of the low Reynolds number from the point of view of aeromechanics. We are also aiming at resolving the electronic/dynamic behavior of piezoresistant material in which the application of a micro mechanical rate sensor like an acceleration sensor is expected,by applying micro mechanics to it.

from Queen's University in 1984

AB - We continue our analysis of the Galactic oxygen-rich supernova remnant (SNR) G292.0+1.8, which was observed with the Chandra X-Ray Observatory. The high angular resolution Chandra data resolve metal-rich ejecta knots as well as the shocked circumstellar medium. X-ray emission from the ejecta material in G292.0+1.8 is dominated by highly ionized O, Ne, and Mg. Measured abundance ratios suggest that this material was produced during the hydrostatic evolution of the massive progenitor star. In contrast to Cassiopeia A, there is little evidence for X-ray-emitting ejecta from explosive nucleosynthesis, i.e., material enriched in Si, S, and particularly, Fe. This limits the amount of mixing or overturning of deep ejecta material in G292.0+1.8 and suggests that the ejecta are strongly stratified by composition and that the reverse shock has not propagated to the Si/S- or Fe-rich zones. On the other hand, the bright equatorial belt is dominated by X-ray emission with normal chemical composition, which supports shocked dense circumstellar material for its origin. We find that the thermal pressure in the SNR is much higher than the pressure in the pulsar wind nebula (PWN), indicating that the reverse shock has not yet begun to interact with the PWN.

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