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Then (1) exhibits spatial chaos if and only if m + n ≥ 4. ... Bifurcation Chaos 2002.12:1717-1730. Downloaded from www.worldscientific.com by NATIONAL CHIAO TUNG UNIVERSITY on 04/27/14. For personal use only. ...doi:10.1142/s0218127402005510 fatcat:ybrfwp4gffgippyzddl6qee72y
Chaos 19, 037104 ͑2009͒ closed states, one open state͒. ... -5 Ion channels fitting single-channel data Chaos 19, 037104 ͑2009͒ -9 Ion channels fitting single-channel data Chaos 19, 037104 ͑2009͒ ...doi:10.1063/1.3184540 pmid:19792029 pmcid:PMC5848693 fatcat:6qvmllbsnbaojgh5lwtygkwnzu
Although elimination of the master's degree as the entry-level degree for audiologists appears to be in direct opposition Chaos or Order? ... Such a plan is needed to assure that order and fairness prevail over chaos and special interests during the transition to the professional doctorate as the entrylevel degree in audiology. ...doi:10.1044/1059-0889.0202.07 pmid:26661123 fatcat:a6kwvxzdirfrfchims4myvsdmy
We introduce results of computer experiments on information processing in a hexagonal array of vesicles filled with Belousov-Zhabotinsky (BZ) solution in a sub-excitable mode. We represent values of Boolean variables by excitation wave-fragments and implement basic logical gates by colliding the wave-fragments. We show that a vesicle filled with BZ mixture can implement a range of basic logical functions. We cascade BZ-vesicle logical gates into arithmetic circuits implementing addition of twodoi:10.1016/j.chaos.2011.03.010 fatcat:jui4jwjfizasnmosl6fi3ukh7m
more »... ne-bit binary numbers. We envisage that our theoretical results will be applied in chemical laboratory designs of massive-parallel computers based on fine-grained compartmentalisation of excitable chemical systems.
Dave Sells, Alain Topor and Larry Davidson nla | Innvaor + | Htrin SAc¢ ct lee an heal Yaie University, Psykiatr ) Oda, Arsta, weden, die Generating Coherence out of Chaos: Examples of the Utility of Empathic ... You have to accept that—in the big picture. 266 * Dave Sells, Alain Topor and Larry David R: What does it mean to see it like that? ...doi:10.1163/1569162042652164 fatcat:wqzoxabqlna5tfxtk3tobgrdpa
Irregular arrangements of vesicles filled with excitable and precipitating chemical systems are imitated by Voronoi automata --- finite-state machines defined on a planar Voronoi diagram. Every Voronoi cell takes four states: resting, excited, refractory and precipitate. A resting cell excites if it has at least one excited neighbour; the cell precipitates if a ratio of excited cells in its neighbourhood to its number of neighbours exceed certain threshold. To approximate a Voronoi diagram ondoi:10.1016/j.chaos.2011.01.016 fatcat:h2iuady35bfbbiof734de42suy
more »... ronoi automata we project a planar set onto automaton lattice, thus cells corresponding to data-points are excited. Excitation waves propagate across the Voronoi automaton, interact with each other and form precipitate in result of the interaction. Configuration of precipitate represents edges of approximated Voronoi diagram. We discover relation between quality of Voronoi diagram approximation and precipitation threshold, and demonstrate feasibility of our model in approximation Voronoi diagram of arbitrary-shaped objects and a skeleton of a planar shape.
In a sub-excitable light-sensitive Belousov-Zhabotinsky chemical medium an asymmetric disturbance causes the formation of localized traveling wave-fragments. Under the right conditions these wave-fragment can conserve their shape and velocity vectors for extended time periods. The size and life span of a fragment depend on the illumination level of the medium. When two or more wave-fragments collide they annihilate or merge into a new wave-fragment. In computer simulations based on thedoi:10.1142/s0218127411029574 fatcat:2hzyi3fzuzcsvoz3tqpylf46h4
more »... r model we demonstrate that the outcomes of inter-fragment collisions can be controlled by varying the illumination level applied to the medium. We interpret these wave-fragments as values of Boolean variables and design collision-based polymorphic logical gates. The gate implements operation XNOR for low illumination, and it acts as NOR gate for high illumination. As a NOR gate is a universal gate then we are able to demonstrate that a simulated light sensitive BZ medium exhibits computational universality.
Large Ground-based Telescopes
This paper proposes an optical fiber positioning unit device for LAMOST(Large Area Multi-Object Fiber Spectroscope Telescope), It consists of a central shaft revolving mechanism, and eccentric shaft revolving mechanism relative to central shaft. The central shaft turns round at the range of -180 to +180 and the eccentric shaft turns round at the range of -90 to +90 driving by each control motor. When positioning, the optical fiber end moves on the focal plate throughout, and can never deviatedoi:10.1117/12.458000 fatcat:ix6hr7wkfzeh3kzutzipvsx2py
more »... om focal plane. It has simple structure, could be machined and assembled and taken down easily and could be ensured machining practices easily, so could be reduced manufacture costs. The unit sets mechanical electrical zero position detecting device to reduce the accumulate error of multi-positioning. Testing result have demonstrated this new double revolving optical fiber positioning unit device can accord with the demand of LAMOST entirely.
Production clusters are a common environment for programming assignments in courses involving High Performance Computing, but they can present challenges, especially in the context of use by courses at institutions remote from these resources. In the context of the Oklahoma Cyberinfrastructure Initiative, the University of Oklahoma has been providing its centrally managed clusters for use by courses statewide. This paper explores mechanisms for using this shared, remote resource for teaching, and advocates in favor of such use.doi:10.1109/cluster.2013.6702630 dblp:conf/cluster/CarleySMZN13 fatcat:pxu3drp27nehnbwkq6c75ixxxi
Large Ground-based Telescopes
The observation region of fiber positioning unit of LAMSOT is designed as a round area and overlapped each other in order to eliminate the un-observation region and increase the efficiency of the observation. But in such structure, the fiber holders have probability to touch each other during moving to the target images. This paper introduces a method of an observation planning for LAMOST sub-system including 19 fiber positioning units which can diminish the probability of mechanicaldoi:10.1117/12.457962 fatcat:jddfijzmhfa6va5yp4kh4hwl6u
more »... e by proper assignment ways and the preparatory processing in which the interference would be detected and eliminated through the retreat algorithm, and the strategy of allocating images and the moving routes of all units are obtained. The computer simulation indicates that this method successfully avoids the mechanical collisions during observations of Sub-system, at the same time, the efficiency of the observation is hardly decreased. This method is definitely valuable to the parallel controllable optical fiber position system of LAMOST which has 4000 fiber positioning units.
We present the first two aircraft Global Positioning System (GPS)-reflection altimetry measurements, the most precise GPS ocean-altimetry measurement, and demonstrate the altimetric precision and spatial resolution necessary to map mesoscale eddies. Our first experiment demonstrated a 14-cm precision single-satellite ocean altimetry measurement while our more recent experiment demonstrates 5 cm altimetric precision with 5-km spatial resolution. The new results show significant improvement overdoi:10.1029/2002gl014759 fatcat:komfynhfpvcjnp5infn47zwhnm
more »... ur previous effort, due to improved modeling, greater aircraft altitudes and velocities, improved receiver positioning, and better experimental control. Plans to further reduce speckle and refine models to obtain 5-cm altimetric accuracy are presented.
AND FREDERICO DE CASTILLEJ0 5 Observations and numerical simulations of upwelling along the Galician coast of Spain during April 1982 are presented. In situ measurements include shipboard determinations of hydrographic and biological parameters from a grid of stations covering the continental shelf from Cape Finisterre to Ria de Vigo, sea level data from Vigo and La Coruiia, and wind stress estimates derived from the ship winds and from surface pressure charts. Sea surface temperaturedoi:10.1029/jc091ic07p08470 fatcat:slqri3miynf6zof247sjyiv2ky
more »... n and pigment concentration information have been obtained from a sequence of satellite images from the NOAA 7 advanced very high resolution radiometer and the Nimbus 7 coastal zone color scanner, respectively. Since the Cape Finisterre sector of the Iberian peninsula is characterized by an abrupt change in coastline orientation, wind-driven upwelling can occur m that reg10n over a 270° range of wind direction. These data document the evolution of upwelling and the resultant coastal circulation in response to two wind events that occurred over a 10-day period. Salient features of the circulation include a southward coastal jet and a northward flow further offshore along the western coast. Numerical simulations of the coastal currents, the vertical excursion of a density interface from a static equilibrium position, and coastal sea level are conducted using a wind patch characterized by constant direction and negative curl. The simulations show that during these wind events, the greatest upwelling will occur either at Cape Finisterre or along the northern coast as was observed in this case and as has been reported by others. It is suggested on the basis of the analysis of the sea level records and on the numerical simulations that wave disturbances propagate northward along the coast at a speed of 120-160 km/day. Finally, it is speculated that much of the organic material formed during upwelling events north of the Cape Finisterre is advected out to sea northwest of the cape.
The 3DTown project is focused on the development of a distributed system for sensing, interpreting and visualizing the real-time dynamics of urban life within the 3D context of a city. At the heart of this technology lies a core of algorithms that automatically integrate 3D urban models with data from pan/tilt video cameras, environmental sensors and other real-time information sources. A key challenge is the three-dimensionalization of pedestrians and vehicles tracked in 2D camera video, whichdoi:10.1109/vr.2012.6180895 dblp:conf/vr/Corral-SotoTWPCSHSE12 fatcat:e2y4bxjl5jfqhihfthmnoz6riy
more »... requires automatic real-time computation of camera pose relative to the 3D urban environment. In this paper we report preliminary results from a prototype system we call 3DTown, which is composed of discrete modules connected through pre-determined communication protocols. Currently, these modules consist of: 1) A 3D modeling module that allows for the efficient reconstruction of building models and integration with indoor architectural plans; 2) A GeoWeb server that indexes a 3D urban database to render perspective views of both outdoor and indoor environments from any requested vantage; 3) Sensor modules that receive and distribute real-time data; 4) Tracking modules that detect and track pedestrians and vehicles in urban spaces and access highways; 5) Camera pose modules that automatically estimate camera pose relative to the urban environment; 6) Threedimensionalization modules that receive information from the GeoWeb server, tracking and camera pose modules in order to back-project image tracks to geolocate pedestrians and vehicles within the 3D model; 7) An animation module that represents geo-located dynamic agents as sprites; and 8) A web-based visualization module that allows a user to explore the resulting dynamic 3D visualization in a number of interesting ways. To demonstrate our system we have used a blend of automatic and semi-automatic methods to construct a rich and accurate 3D model of a university campus, including both outdoor and indoor detail. The demonstration allows web-based 3D visualization of recorded patterns of pedestrian and vehicle traffic on streets and highways, estimations of vehicle speed, and real-time (live) visualization of pedestrian traffic and temperature data at a particular test site. Having demonstrated the system for hundreds of people, we report our informal observations on the user reaction, potential application areas and on the main challenges that must be addressed to bring the system closer to deployment.
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