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Operator (computer programming)

About: Operator (computer programming) is a research topic. Over the lifetime, 40896 publications have been published within this topic receiving 671452 citations. The topic is also known as: operator symbol & operator name.


Papers
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Patent
24 Sep 1999
TL;DR: In this article, a movable barrier operator with improved safety and energy efficiency features automatically detects line voltage frequency and uses that information to set a worklight shut-off time and a maximum speed of door travel.
Abstract: A movable barrier operator having improved safety and energy efficiency features automatically detects line voltage frequency and uses that information to set a worklight shut-off time. The operator automatically detects the type of door (single panel or segmented) and uses that information to set a maximum speed of door travel. The operator moves the door with a linearly variable speed from start of travel to stop for smooth and quiet performance. The operator provides for full door closure by driving the door into the floor when the DOWN limit is reached and no auto-reverse condition has been detected. The operator provides for user selection of a minimum stop speed for easy starting and stopping of sticky or binding doors.

114 citations

Book
25 Sep 2006
TL;DR: Invertibility at infinity and limit operators at infinity was shown in this article, where the Finite Section Method was used to solve the problem of infinite infinity in the limit operator.
Abstract: Preliminaries.- Invertibility at Infinity.- Limit Operators.- Stability of the Finite Section Method.

114 citations

Proceedings ArticleDOI
29 Oct 2001
TL;DR: An exo-skeleton type power assist system, HAL (Hybrid Assistive Leg) for the walking aid, which started the autonomous motion immediately when the operator intended to start the motion, and stepping-up motion which reflected the intention of the operator was able to be achieved, even if the operator hardly generated the power.
Abstract: Generally, the operator's force signal is utilized in the case of the power assist. However, the operator must keep always providing the force in order to obtain the force signal. We have developed an exo-skeleton type power assist system, HAL (Hybrid Assistive Leg) for the walking aid. The purposes of this study are (1) to estimate the operator's action in the initial stage of the motion, (2) to propose the method for realizing the power assist corresponding to the operator's motion. We include the following mechanism into HAL system: (1) the mechanism which estimate the reference input of the bend angle of a joint by using myoelectricity, (2) the mechanism which autonomously generates the motion using phase sequence. For optional steps, experiments were performed to realize the stepping-up motion which reflects the intention of the operator. As the result, HAL started the autonomous motion immediately when the operator intended to start the motion, and stepping-up motion which reflected the intention of the operator was able to be achieved, even if the operator hardly generated the power.

114 citations

Journal ArticleDOI
TL;DR: In this article, the authors present an efficient and general algorithm for evaluating coefficient functions of asymptotic operator expansions, based on large euclidean momenta and a large mass.

114 citations

Journal ArticleDOI
TL;DR: In this paper, the spectral radius of the Perron-Frobenius operator for piecewise expanding transformations is derived and the speed of convergence to equilibrium in such one-dimensional systems is analyzed.
Abstract: We determine the essential spectral radius of the Perron-Frobenius-operator for piecewise expanding transformations considered as an operator on the space of functions of bounded variation and relate the speed of convergence to equilibrium in such one-dimensional systems to the greatest eigenvalues of generalized Perron-Frobenius-operators of the transformations (operators which yield singular invariant measures).

114 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202236
20212,210
20202,380
20192,310
20182,164
20171,834