Article

3D Perception of Reality by Operators and Sensors on the Machine

March 2013

Authors:

ERTICO

3D perception of reality systems have been developed for training in various purposes. These systems are generally designed simulator. Unintegrated application domain it was formed training in driving schools. I called generic such as LG-DS system = Ladies and Gentlemen - Drivers System means that anyone who attends training with LG-DS system will become after, the actual driving in real traffic a real Mr. or Ms. the universal sense of the word, which respect the other participants in traffic, resulting in environmentally friendly and less polluting environment. This kit was developed from the need for a new type of driving school with a different training philosophy, with a specific objective analysis tool training mode and route management in real time and improve the quality of driving .

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Chapter

Hern: The Catastrophe of Lyric in John Burnside

January 2011

Scott Brewster

The lyric poem emerges in crisis; the lyric poem emerges as crisis. Prevailing critical assumptions over the last two centuries have tended to privilege certain features of lyric, such as its timelessness, emotional sincerity and self-sufficiency. Paul Celan, however, imagines a different kind of lyric passion, where the future-oriented poem yearns for, or is destined to, some unforeseen ... [Show full abstract] addressee: A poem, being an instance of language, hence essentially dialogue, may be a letter in a bottle thrown out to sea with the — surely not always strong — hope that it may somehow wash up somewhere, perhaps on a shoreline of the heart. In this way, too, poems are en route: they are headed toward. Toward what? Toward something open, inhabitable, an approachable you, perhaps, an approachable reality. (Celan, 1986, pp. 34–5) We might therefore argue that it is the sense of suddenness, surprise and uncertain encounter occasioned by the poetic experience that marks out modern lyric. The lyric utterance longs for an intimacy that is self-sustaining, yet it seeks from the outset to find its way to another’s heart. On a distant shoreline, the poem’s appeal may become readable and reproducible, and it may find habitation; but both the journey and the arrival are matters of chance and danger, impossible to calculate in advance.

Conference Paper

Full-text available

Effect of the Immersion Level of a Virtual Loader Simulator on the Sense of Presence

January 2011

In mobile machine industry, work machine simulators can be used to save time and costs in product development and training. However, investing into expensive or difficult-to-use technology should be avoided if it does not affect measurable user performance or feeling of presence. At Tampere University of Technology, a virtual loader simulator has been constructed in an three-wall walk-in virtual ... [Show full abstract] environment. The goal of this research was to investigate how the immersivity of the simulator affects testers’ feeling of presence. A total of 25 test users performed two test runs each with different simulator setups, and the presence level of each user was evaluated by a questionnaire after both runs. The results indicate that switching from 2D view to 3D stereoscopic display did not significantly affect the sense of presence. However, with the motion platform, the test users reported clearly higher presence ratings than without it. In addition, we examined some effects of the users’ backgrounds: Test users who had experience from driving large work machines reported lower presence ratings than those without such experience. The sense of presence for frequent computer players was higher than for non-players, but only in one simulator setup.

Article

Two Real-Time Flow Controls in Wormhole Networks

September 1997 · International Journal of High Speed Computing

In this paper, we study wormhole routed networks and envision their suitability for real-time traffic in a priority-driven paradigm. A traditional blocking flow control in wormhole routing may lead to a priority inversion in the sense that high priority packets are blocked by low priority packets for unlimited time. The priority inversion causes the frequent deadline missing even at a low network ... [Show full abstract] load. This paper therefore proposes two preemptive flow control policies where high priority packets can preempt network resources held by low priority packets. As a result, the proposed flow controls can resolve the priority inversion. Our simulations show that preemptive flow controls significantly reduce deadline miss ratios for Various real-time traffic configurations.

Data

Big Data Driving Decisions-book-cover

May 2014

Renaud Di Francesco

Big Data driving decisions with direct impact on the real-world: this is the deep transformation ahead of us. With billions of humans connected through mobile and fixed networks, the challenge is now shifting to connecting things in a meaningful way. This is what Big Data, enabled by Machine to Machine connectivity, is all about: -making sense of all bits of knowledge acquired in real time, ... [Show full abstract] digested, processed, retrieved, understood through Analytics. -building a decision and action process, based on the result of this analysis. -feeding back to the real-world commands or actions. This book will take you through use cases, technologies, economics of big data, with a review of policy and regulation which comes into play at the cross-roads of society and business, individuals, organisations, and government.

Article

Washout algorithm with fuzzy-based tuning for a motion simulator

February 2003 · KSME International Journal

In the virtual environment, reality can be enhanced by offering the motion based on a motion simulator in harmony with visual and auditory modalities. In this research the Stewart-Gough-platform-based motion simulator has been developed. Implementation of vehicle dynamics is necessary in the motion simulator for realistic sense of motion, so bicycle dynamics is adopted in this research. In order ... [Show full abstract] to compensate for the limited range of the motion simulator compared with the real vehicle motion, washout algorithm composed of high-pass filter, low-pass filter and tilt coordination is usually employed. Generally, the washout algorithm is used with fixed parameters. In this research a new approach is proposed to tune the filter parameters based on fuzzy logic in real-time. The cutoff frequencies of the filters are adjusted according to the workspace margins and driving conditions. It is shown that the washout filter with the fuzzy-based parameters presents better performance than that with the fixed ones.

Article

Enhanced spectrum optimization of cognitive radio

January 2015

Cognitive radio technology enhances radio resources usage by reconfiguring the wireless connection setting according to the optimum decision by using Ranked Based Multipath Algorithm. Multipath routing utilizes multipath available path for transmission of stream of data for multiple application. Multipath routing based optimization rely on explicit relationship between parameters, observation and ... [Show full abstract] criteria. The cognitive radio will sense the radio frequency parameter from the environment and the reasoning engine in the cognitive radio will take the required decision in order to provide new spectrum allocation as demanded by the user. The transmission parameters which can take into consideration are modulation method, bandwidth, data rate, symbol rate, power consumption, etc. Multipath routing based optimization when done in cognitive radio can provide a criteria to accommodate the secondary user in best possible spectrum at real time environment.

Chapter

The Traffic between Two Worlds

January 2003

Stephen Dobyns

the world we see, hear, touch, taste and smell, the world reported in newspapers—this is what we think of as common reality. It is the world into which politicians are elected, a world of tools, of pragmatism, of daily work and eating, the world where we spit, breathe and move our bowels. This world surrounds us like a shell, sometimes pressing close and sometimes, if we have money or are simply ... [Show full abstract] fortunate, giving us a little room to amuse ourselves. Yet the walls are always there. It is the temporal, finite, measurable world and we take that measurement with our five senses.

Article

Improving the visual competence of machines

July 1993

Rod Blissett

Vision is arguably the most important of our five senses. An essential element of human visual competence is our ability to interpret two-dimensional (2D) data in terms of three-dimensional (3D) structures. This perceptive ability enables us to achieve safe mobility within a changing environment, to recognize and locate solid shapes, and to grasp objects adroitly. The paper evaluates how new ... [Show full abstract] research is finding ways of integrating visual sensors with local intelligence to provide machines with automatic capabilities for analysis, monitoring, guidance, and control. The author discusses applications that range from advanced uses of automated guided vehicles to computer-assisted neurosurgery.

Article

A Path Reservation Protocol For An ATM/PVC-Based Video Retrieval Network

December 1994

A protocol to connect clusters of customers to Information Providers, via an ATM Virtual Path Crossconnect is presented. The traffic consists of bursts of cells at the peak rate of the carrier. The delivery of these bursts is subject to deadlines which are imposed by applications and are necessary to preserve the temporal properties of the information (e. g. video). An ongoing dialog between the ... [Show full abstract] clusters and the information providers must guarantee synchronization to achieve maximal throughput. We present a protocol which achieves fast synchronization even at high loads, for systems where the traffic patterns change slowly, such as video-on-demand systems. The protocol is distributed, in the sense that clusters do not talk among themselves, and likewise the information providers do not communicate among themselves. We examine what happens when customers change their requests from time to time. For example a customer watching a video might request a ‘fast forward’ or ‘rewind’. Some analytical results are obtained for this case, and verified by simulation. We check by simulation if the protocol can be implemented in real time, without serious degradation to the throughput. Finally we present an experimental formula to calculate the deadline miss rate.

Article

Simulations by time-bounded counter machines

February 2011 · International Journal of Foundations of Computer Science

Holger Petersen

We investigate the efficiency of simulations of storages by several counters. A simulation of a pushdown store is described which is optimal in the sense that reducing the number of counters of a simulator leads to an increase in time complexity. The lower bound also establishes a tight counter hierarchy in exponential time. Then we turn to simulations of a set of counters by a different number ... [Show full abstract] of counters. We improve and generalize a known simulation in polynomial time. Greibach has shown that adding s + 1 counters increases the power of machines working in time n s . Using a new family of languages we show here a tight hierarchy result for machines with the same polynomial time-bound. We also prove hierarchies for machines with a fixed number of counters and with growing polynomial time-bounds. For machines with one counter and an additional "store zero" instruction we establish the equivalence of real-time and linear time. If at least two counters are available, the classes of languages accepted in real-time and linear time can be separated.

Article

Volumetric display using mirror image series

October 2007

L.-X. Li

A volumetric display method and a corresponding principle prototype using mirror image series are described. In the method, a DMD embedded digital light projector is used to produce a 2D picture. The picture is then reflected by a front surface mirror which is moving to-and-fro in its surface normal direction to form a mirror image series. When the 2D picture is synchronous refreshing according ... [Show full abstract] to the position of the mirror, the mirror image series will be sensed as a 3D image with physical depth of focus by a viewer because of the persistence of vision. The 3D image is composed by uniform voxels arranged uniformly without the shadow caused by the thickness of screen. Thus it is suitable for accurate display of 3D designed engineering objects. Contrast to directly moving projecting screen, the method avoids the real-time focus and magnification correction problem, and reduces 50% of mechanical scan distance.

Conference Paper

Full-text available

ATHMEA: A three-dimensional model of the Eastern Alps

April 2007

The complex geological structure of the Eastern Alps has been studied for more than two centuries. The vast amount of knowledge accumulated in the past as well as the in-creasing computer power and 3D applications have made it possible to present the first ever high-resolution 3D geological model of the Eastern Alps. This model, ATHMEA (A THree-dimensional Model of the Eastern Alps) is aiming at ... [Show full abstract] a geometrically consis-tent, geologically feasible, space-filling model with simplified and unified geological units. The target resolution of the model was 5 km in both N-S and E-W directions while the vertical resolution depends on the geometry of the individual units. The model has been deduced from basic geological and seismic sections and the 3D setting has been extended to the neighbouring cross-sections so that in perpendicular sense the defined units can be considered feasible. Some constrains were built in due to the technology of creation: the so-called compact body concept has been applied. Certainly ATHMEA presented here is by far not free of contradictions from geological point of view: it is a target of continuous update and the current issue represents the result of data integration. Further amendments will reduce the differences between the model and the observed reality. To make ATHMEA available for the research community, it will be published on digital media containing all relevant information in digital format usable in various GIS platforms and mapping software.