We propose the concept of self-assembly of smart tiles, i.e., tiles which possess a local computational device in addition to having edge glues that can be activated or deactivated by signals. We demonstrate the potential of self-assembly with smart tiles to efficiently perform robotic tasks such as the replication of convex shapes. The smart tile assembly system we construct does not make any ...

Printed Circuit Boards (PCBs) are extensively used in diverse electronic products today. The placement process tends to be a bottleneck in a PCB assembly line, and many SMT PCB assembly researches focused on improving the process perspective of the machine operations. This research proposed a BPN data mining model to analyze the effect of a head calibration process on the defects of placement o...

The FAST [1][2] (Fusion Advanced Studies Torus) load assembly, which includes the Vacuum Vessel (VV) and its internal components, the magnet system and the poloidal field coils, is presented in this paper. FAST operates at a wide range [3][4] of parameters from high performance H-Mode (BT up to 8.5 T; IP up to 8 MA) as well as Advance Tokamak operation (IP=3 MA), and full non inductive current ...

Each level of the hierarchical IC architecture may have several components; for example, the Execution Level has one real-time controller per work-cell agent. A supervisory controller in the Coordination Level may coordinate several agents to sequence the jobs needed for a given task. Each system must sense the current conditions, make decisions, and give commands or status reports to other sys...

A recent structural study of a double-stranded DNA bacteriophage has provided remarkable new insights into the assembly of a complex virus particle and ushers in a new era in the imaging of non-icosahedral viruses.

amyloid-β (aβ) self-assembly into cross-β amyloidfibrils is implicated in a causative role in alzheimer’s disease pathology.uncertainties persist regarding the mechanisms of amyloid self assembly and the role of metastable prefibrillar aggregates. aβ fibrilsfeature a sheet-turn-sheet motif in the constituent β-strands; as such, turn nucleation has been proposed as a rate-limiting step in the se...

The growing demand for advanced micro-devices that integrate various sensors and actuators, e.g. for biomedical applications, has created a strong need for assembly units that can meet high precision and manipulation requirements. However, developing a sophisticated machine that can fulfill these requirements solves only a part of the problem — having a skilled person that can program and opera...

Tile-based self-assembly is a model of “algorithmic crystal growth” in which square “tiles” represent molecules that bind to each other via specific and variable-strength bonds on their four sides, driven by random mixing in solution but constrained by the local binding rules of the tile bonds. In the late 1990s, Erik Winfree introduced a discrete mathematical model of DNA tile assembly called ...

The role of visual registration in executing assembly tasks is examined. A framework to execute assembly operations is presented in which assembly tasks are executed using a nite state machine that supervises the interaction between registration and control components. Temporal registration is achieved visually using a camera pair by combining image based feature tracking and weak camera-object...

Printed circuit boards (PCBs) are extensively used in diverse electronic products today. The placement process is generally the bottleneck in a PCB assembly line. Many researchers have indicated that an optimal component placement sequence reduces the cycle time of an assembly line with single placement machines. However, in current PCB assembly lines, more than one placement machine, including...