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- Berbyuk, Viktor, 1953
(författare)
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Energy-optimal control of human leg in swing phase
- 1995
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Ingår i: Biomechanics Seminar. - 1100-2247. ; 9, s. 32-49
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Konferensbidrag (refereegranskat)abstract
- The mathematical model and efficient algorithm for designing the energy-optimal controlled processes of a human leg in the swing phase are proposed. This algorithm is based on special conversion of the optimal control problem for nonlinear dynamical system modeled a human leg into a standard nonlinear programming problem. The objective function for the optimization algorithm is the integral over swing phase's time from the sum of the mechanical power absolute values for all controlling stimuli. A number of the energy-optimal controlled processes of a human leg under different boundary conditions and restrictions on phase coordinates have been obtained. The kinematical and dynamical characteristics of obtained optimal controlled processes are compared with respective characteristics of a human leg's swing phase during normal gait.
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| 6. |
- Edin Anders, Ingelman Gunnar, Rathsman Johan
(författare)
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Rapidity Gaps in DIS through Soft Colour Interactions
- 1995
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Ingår i: In proc. of workshop `DIS and QCD', Paris, April 1995.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- We present a new mechanism for the creation of large rapidity gaps in DIS events at HERA. Soft colour interactions between perturbatively produced partons and colour-charges in the proton remnant, modifies the colour structure for hadronization giving col
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| 7. |
- Nilsson, Örjan
(författare)
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Fysikstudier med CDROM
- 1995
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Ingår i: Datorn i Utbildningen. - 1100-3650. ; :1, s. 26-27
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 8. |
- Thunman Mats, Ingelman Gunnar, Gondolo Paolo
(författare)
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A Monte-Carlo Calculation of Atmospheric Muon and Neutrino Fluxes
- 1995
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Ingår i: NUCLEAR PHYSICS B Proc Suppl. ; , s. 274-277
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Konferensbidrag (refereegranskat)abstract
- Production of muons and neutrinos in cosmic ray interactions with the atmosphere has been investigated with a cascade simulation program based on Lund Monte Carlo programs. The resulting `conventional' muon and neutrino fluxes (from $\pi ,K$ decays) agree
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| 9. |
- Eriksson, Patric, et al.
(författare)
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A role for 'sensor simulation' and 'pre-emptive learning' in computer aided robotics
- 1995
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Ingår i: 26th International Symposium on Industrial Robots, Symposium Proceedings. - : Mechanical Engineering Publ.. - 1860580009 ; , s. 135-140
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Konferensbidrag (refereegranskat)abstract
- Sensor simulation in Computer Aided Robotics (CAR) can enhance the capabilities of such systems to enable off-line generation of programmes for sensor driven robots. However, such sensor simulation is not commonly supported in current computer aided robotic environments. A generic sensor object model for the simulation of sensors in graphical environments is described in this paper. Such a model can be used to simulate a variety of sensors, for example photoelectric, proximity and ultrasonic sensors. Tests results presented here show that this generic sensor model can be customised to emulate the characteristics of the real sensors. The preliminary findings from the first off-line trained mobile robot are presented. The results indicate that sensor simulation within CARs can be used to train robots to adapt to changing environments.
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| 10. |
- miettinen, heije, et al.
(författare)
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Laboratory study of N2O formation from burning char particles at FBC conditions
- 1995
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Ingår i: Energy and Fuels. - 1520-5029. ; 9:1, s. 10-19
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Tidskriftsartikel (refereegranskat)abstract
- Coal combustion in fluidized bed combuster is a cause of nitrous oxide emissions to the atmosphere. The formation of NzO seems to be related both to homogeneous and heterogeneous reactions taking place in the combustion process. The purpose of this investigation was to study the formation of NzO from burning char particles under different combustion conditions. The experiments were carried out in a fmed bed reactor containing quartz sand (SiOz) to support the coal particles. A monolayer of bituminous coal particles between two layers of quartz sand was devolatilized prior to the actual combustion in an argon flow. The coal particle sizes were varied between 0.090 and 2.80 mm. The inlet gas mixture contained NO, 0 2 , and Ar or just 0 2 and Ar. The oxygen concentration was varied between 0.5 and 20% 0 2 and the NO concentration was varied between 0 and 1000 ppm NO. The inlet gas flow was varied between 590 and 1581 mL/ min NTP (273 K, 1 atm) and the bed temperature was varied between 1023 and 1123 K. The off-gases were analyzed for NzO, NO, CO, and COZ. Addition of NO to the flue gas increased the NzO yield. A low combustion temperature also favors high yields of N20. A great influence of the oxygen concentration was found (high oxygen concentrations give low Nz0 yields), which indicates that the combustion conditions are very important for the NzO yield. A particle size of 1 mm gives the highest NzO yields.
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