نتایج جستجو برای: scale manipulation

تعداد نتایج: 635538  

2017
Dirk Van Vuren DIRK VAN VUREN

Wildlife damage management has often emphasized density reduction through lethal means. In addition to facing increasing regulatory and social restrictions, this approach also faces ecological problems; density reduction without a concomitant decrease in carrying capacity may only stimulate density-dependent responses that quickly return population densities to pre-control levels. Consequently,...

Journal: :Science 2008
Markus Ternes Christopher P Lutz Cyrus F Hirjibehedin Franz J Giessibl Andreas J Heinrich

Manipulation of individual atoms and molecules by scanning probe microscopy offers the ability of controlled assembly at the single-atom scale. However, the driving forces behind atomic manipulation have not yet been measured. We used an atomic force microscope to measure the vertical and lateral forces exerted on individual adsorbed atoms or molecules by the probe tip. We found that the force ...

2016
Kuan-Lin Li Wu-Te Yang Kuei-Yuan Chan Pei-Chun Lin

Robot manipulators enable large-scale factory automation of simple and repeated tasks. Each manipulation is the result of the robot design and the command inputs provided by the operator. In this study, we focus on the accuracy improvement of practical robot manipulation under uncertainty, resulting in path-specific error values. Existing techniques for reducing the errors use high-precision se...

2011
Cynthia Matuszek Brian Mayton Roberto Aimi Marc Peter Deisenroth Liefeng Bo Robert Chu Mike Kung Louis LeGrand Joshua R. Smith Dieter Fox

This paper presents Gambit, a custom, mid-cost 6DoF robot manipulator system that can play physical board games against human opponents in non-idealized environments. Historically, unconstrained robotic manipulation in board games has often proven to be more challenging than the underlying game reasoning, making it an ideal testbed for small-scale manipulation. The Gambit system includes a low-...

2002
Saw-Wai Hla Karl-Heinz Rieder

The rapid progress in molecular manipulation with a scanning tunneling microscope (STM) tip opens up entirely new opportunities in nanoscience and technology. With these advances, the ultimate chemical reaction steps such as dissociation, diffusion, adsorption, re-adsorption and bond formation processes become possible to be performed by using the STM tip at the single molecule level with an at...

2015
S. P. Jarvis S. Taylor J. D. Baran N. R. Champness J. A. Larsson P. Moriarty

Scanning probe-actuated single molecule manipulation has proven to be an exceptionally powerful tool for the systematic atomic-scale interrogation of molecular adsorbates. To date, however, the extent to which molecular conformation affects the force required to push or pull a single molecule has not been explored. Here we probe the mechanochemical response of two tetra(4-bromophenyl)porphyrin ...

2003
Xiaojun Shen Nicolas D. Georganas

Some international standards have been developed that are very likely to make a major impact on CVE (Collaborative Virtual Environment) technology: the Distributed Interactive Simulation (DIS) (IEEE Standard 1278.1)[8] and the High Level Architecture (HLA) (IEEE Standard 1516) [1]. Deriving from military-purpose simulations, DIS and HLA, however, have limitations on building large-scale general...

2015
Feng Yin Pekka Koskinen Sampo Kulju Jaakko Akola Richard E. Palmer

Atomic manipulation in the scanning tunnelling microscopy, conventionally a tool to build nanostructures one atom at a time, is here employed to enable the atomic-scale imaging of a model low-dimensional system. Specifically, we use low-temperature STM to investigate an ultra thin film (4 atomic layers) of potassium created by epitaxial growth on a graphite substrate. The STM images display an ...

2015
Michael Beetz Moritz Tenorth Jan Winkler

Making future autonomous robots capable of accomplishing human-scale manipulation tasks requires us to equip them with knowledge and reasoning mechanisms. We propose OPEN-EASE, a remote knowledge representation and processing service that aims at facilitating these capabilities. OPEN-EASE gives its users unprecedented access to the knowledge of leading-edge autonomous robotic agents. It also pr...

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