scholarly journals A Feasible Algorithm for Planning a Continuous Sequence of Collision-Free Motions of a Manipulator

1990 ◽  
Vol 26 (12) ◽  
pp. 1435-1442 ◽  
Author(s):  
Hiroshi NOBORIO ◽  
Motohiko WATANABE ◽  
Takeshi FUJII
Keyword(s):  
Continuous Sequence ◽  
Feasible Algorithm

Wind-Evoked Escape Running of the cricket Gryllus Bimaculatus: I. Behavioural Analysis

1992 ◽  
Vol 171 (1) ◽  
pp. 189-214 ◽  
Author(s):  
HERIBERT GRAS ◽  
MICHAEL HÖRNER
Keyword(s):  
Action Potentials ◽  
Specific Activity ◽  
Angular Speed ◽  
Continuous Sequence ◽  
Behavioural Analysis ◽  
Prothoracic Ganglion ◽  
Short Run ◽  
Stimulus Source ◽  
A Minor ◽  
Spontaneous Walking

Spontaneous walking and escape running in response to wind puffs directed to the abdominal cerci were quantitatively studied in tethered walking crickets. 1. An apparatus for optically recording rotations of an air-supported sphere was developed to measure the intended locomotion of insects with high linear and temporal resolution but without mechanically imposed bias. 2. During spontaneous locomotion without sensory cues for orientation, alternate pauses of 0.35–2.2s and walking phases of 0.5–6s resulted in a highly variable pattern of locomotion on a meandering path. 3. A single air puff to one or both of the wind-sensitive cerci evoked a short run, whereas a continuous sequence of puffs caused sustained escape running with a tendency to turn away from the stimulus source. Escape running was characterized by a series of stereotyped running bouts and pauses, both significantly shorter than those recorded during spontaneous locomotion. 4. Forward speed and angular speed of escape running correlated linearly with the wind puff frequency between 5 and 10Hz. This was caused by a shortening of the standing phases, while the durations of the running bouts were constant. The reflex-like running bouts and the pattern of escape running were largely independent of the duty cycle of the wind puff series and the wind speed. Neither individual steps nor running bouts were synchronized with the stimulus pattern. 5. The behavioural modes of spontaneous walking and escape running were maintained with a minor reduction in general activity in partly dissected specimens during intracellular recording in the prothoracic ganglion. Each impaled local interneurone with locomotion-related activity generated action potentials in the actual step rhythm of walking and running bouts, but did not show specific activity during escape running. Some of these local neurones, however, showed modulations of spike frequency before or during intended turns and may participate in the coordination of the prothoracic legs.

An Algorithm for Fluid–Solid Coupling Based on SPH Method and Its Preliminary Verification

2018 ◽  
Vol 16 (02) ◽  
pp. 1846008
Author(s):  
X. J. Ma ◽  
M. Geni ◽  
A. F. Jin
Keyword(s):  
Elastic Solid ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Sph Method ◽  
Particle Hydrodynamics ◽  
Sph Model ◽  
Smoothed Particle ◽  
Feasible Algorithm ◽  
Coupling Algorithm ◽  
Good Agreement

Based on the fundamental theory of smoothed-particle hydrodynamics (SPH), a feasible algorithm for fluid–solid coupling on interface is applied to describe the dynamic behavior of fluid and solid by utilizing continuum mechanics governing equations. Numerical simulation is conducted based on the proposed SPH model and the fluid–solid interface coupling algorithm, and good agreement is observed with the experiment results. It is shown in the results that the present SPH model is able to effectively and accurately simulate the free-surface flow of fluid, deformation of the elastic solid and the fluid–solid impacting.

scholarly journals Study of Calcium-K Network Evolution from Antarctica

1993 ◽  
Vol 141 ◽  
pp. 410-411
Author(s):  
Jagdev Singh
Keyword(s):  
Magnetic Field ◽  
Life Time ◽  
Network Evolution ◽  
Solar Telescope ◽  
Continuous Sequence ◽  
Set Up ◽  
Convective Cells ◽  
Permanent Station

AbstractTo study the evolution and decay of large convective cells known as supergranules, a solar telescope was set up at Maitri, Indian permanent station in Antarctica region during the local summer months (December 1989 through March 1990). A continuous sequence of calcium-K-line filtergrams for 106 hours with an interval of about 10 minute was obtained. The analysis of this data indicates that most probable life time of the calcium K network is about 20 hours. The life time depends upon the size of the cell and is larger for bigger cells. The data also show that cells (of given size) associated with remanent magnetic field regions live longer than those in the region free from magnetic field regions.

scholarly journals Geology of the Sabie River Basalt Formation in the Southern Kruger National Park

Koedoe ◽  
1986 ◽  
Vol 29 (1) ◽  
Author(s):  
R.J. Sweeney
Keyword(s):  
National Park ◽  
Basaltic Magma ◽  
Kruger National Park ◽  
Volcanic Event ◽  
Continuous Sequence ◽  
Basaltic Lavas

The Sabie River Basalt Formation (SRBF) in the central Lebombo is a virtually continuous sequence of basaltic lavas some 2 500 m thick that was erupted 200 - 179 Ma ago. Flows are dominantly pahoehoe in character and vary from 2 m to 20 m in thickness. Dolerite dykes cross-cutting the basalt sequence probably represent feeders to this considerable volcanic event. Volcanological features observed within the SRBF are described. Two chemically distinct basaltic magma types are recognised, the simultaneous eruption of which presents an intriguing geochemical problem as to their origins.

Upper Ordovician graptolites from the top Lower Hartfell Shale Formation (D. clingani and P. linearis zones) near Moffat, southern Scotland

1982 ◽  
Vol 72 (4) ◽  
pp. 229-255 ◽  
Author(s):  
S. Henry Williams
Keyword(s):  
New Species ◽  
North America ◽  
Upper Ordovician ◽  
The North ◽  
Continuous Sequence ◽  
Two New Species ◽  
Shale Formation ◽  
First Time

ABSTRACTThe top 9 m of Lower Hartfell Shale has been collected in 10 cm samples through a continuous sequence on the North Cliff at Dob's Linn. The boundary between the Dicranograptus clingani and Pleurograptus linearis zones is denned for the first time in a measured section, 5.0 m below the top of the Lower Hartfell Shale, with the excavation of the North Cliff proposed as stratotype. The late D. clingani Zone is characterised by Dicranograptus ramosus?, Dicellograptus moffatensis, D. flexuosus [= D. forchhammeri], Climacograptus dorotheus, Glyptograptus daviesi sp. nov., Diplograptus? pilatus sp. nov., Neurograptus margaritatus and Corynoides calicularis. The P. linearis Zone is characterised by Pleurograptus linearis linearis, Amphigraptus divergens divergens, Leptograptus capillaris, Dicellograptus elegans elegans, D. pumilis, D. carruthersi and Climacograptus tubuliferus. A range chart is provided and an attempt is made at a revised correlation of the Scottish succession with coeval zonal sequences in North America and Australia. Twenty-one taxa are described including the two new species noted above.

Pelagic Foraminifera in the Tertiary of Victoria

1958 ◽  
Vol 95 (4) ◽  
pp. 297-304 ◽  
Author(s):  
Alan Norval Carter
Keyword(s):  
New Zealand ◽  
North America ◽  
Middle Miocene ◽  
Caribbean Region ◽  
Upper Eocene ◽  
Significant Events ◽  
Continuous Sequence ◽  
The Caribbean

AbstractA sequence of eleven faunal units characterized by pelagic foraminifera and embodying thirteen significant events has been recognized in the Tertiary of Victoria. They form a continuous sequence from the Upper Eocene to the Middle Miocene. Some of these events have been recognized in the same order in New Zealand, Europe, North America, the Caribbean region, and Saipan.

A Feasible Algorithm for Designing Biorthogonal Binary Finitely Supported Multiwavelet Functions

2011 ◽  
Vol 225-226 ◽  
pp. 1092-1095
Author(s):  
Bao Min Yu
Keyword(s):  
Wavelet Analysis ◽  
Multiresolution Analysis ◽  
Natural Science ◽  
Matrix Theory ◽  
Scaling Functions ◽  
Science And Engineering ◽  
Engineering Computation ◽  
Feasible Algorithm ◽  
Definition Of ◽  
Vector Valued

Wavelet analysis has been a powerful tool for exploring and solving many complicated problems in natural science and engineering computation. In this paper, the notion of vector-valued multiresolution analysis is introduced and the definition of the biorthogonal vector-valued bivariate wavelet functions is given. The existence of biorthogonal vector-valued binary wavelet functions associated with a pair of biorthogonal vector-valued finitely supported binary scaling functions is investigated. An algorithm for constructing a class of biorthogonal vector-valued finitely supported binary wavelet functions is presented by virtue of multiresolution analysis and matrix theory.

scholarly journals Chronology of Prehistoric Cultural Complexes of Sakhalin Island (Russian Far East)

Radiocarbon ◽  
2004 ◽  
Vol 46 (1) ◽  
pp. 353-362 ◽  
Author(s):  
Yaroslav V Kuzmin ◽  
Alexander A Vasilevski ◽  
Sergei V Gorbunov ◽  
G S Burr ◽  
A J Timothy Jull ◽  
...  
Keyword(s):  
Middle Ages ◽  
Iron Age ◽  
Russian Far East ◽  
Far East ◽  
Sakhalin Island ◽  
Upper Paleolithic ◽  
Early Iron Age ◽  
Radiocarbon Dates ◽  
Continuous Sequence ◽  
The Middle Ages

A chronological framework for the prehistoric cultural complexes of Sakhalin Island is presented based on 160 radiocarbon dates from 74 sites. The earliest 14C-dated site, Ogonki 5, corresponds to the Upper Paleolithic, about 19,500–17,800 BP. According to the 14C data, since about 8800 BP, there is a continuous sequence of Neolithic, Early Iron Age, and Medieval complexes. The Neolithic existed during approximately 8800–2800 BP. Transitional Neolithic-Early Iron Age complexes are dated to about 2800–2300 BP. The Early Iron Age may be dated to about 2500–1300 BP. The Middle Ages period is dated to approximately 1300–300 BP (VII–XVII centuries AD).

Binary Tree DNA Computing Model Based on the Insert - Remove System

2013 ◽  
Vol 411-414 ◽  
pp. 2062-2066
Author(s):  
Qing Hu Wang ◽  
Zhi Li Pei ◽  
Jie Lian ◽  
Bin Wu
Keyword(s):  
Turing Machine ◽  
Binary Tree ◽  
Dna Computing ◽  
Computing System ◽  
Automata Theory ◽  
Dna Molecule ◽  
Computing Model ◽  
Model Based ◽  
Continuous Sequence

DNA computing has the support of automata theory completely, based on the equivalent for expressing problem by DNA computing model and the double-shift language in automata theory, using a DNA molecule may encode the instantaneous description of Turing machine, and the operation of continuous sequence can be realized by the DNA molecule s operation with enzymes. Insert - Remove System is a computing system in DNA computing, designed an Binary Tree DNA computing model based on the Insert - Remove System in this paper, which can realize the insert, delete and traversal operation, and has the completeness of the theory.

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