scholarly journals Reservoir Computing on Atomic Switch Arrays with High Precision and Excellent Memory Characteristics

2021 ◽  
Vol 25 (4) ◽  
pp. 123-126
Author(s):  
Hiroshi Kubota ◽  
Tsuyoshi Hasegawa ◽  
Megumi Akai-Kasaya ◽  
Tetsuya Asai
2021 ◽  
Vol 3 ◽  
Author(s):  
Sam Lilak ◽  
Walt Woods ◽  
Kelsey Scharnhorst ◽  
Christopher Dunham ◽  
Christof Teuscher ◽  
...  

Atomic Switch Networks comprising silver iodide (AgI) junctions, a material previously unexplored as functional memristive elements within highly interconnected nanowire networks, were employed as a neuromorphic substrate for physical Reservoir Computing This new class of ASN-based devices has been physically characterized and utilized to classify spoken digit audio data, demonstrating the utility of substrate-based device architectures where intrinsic material properties can be exploited to perform computation in-materio. This work demonstrates high accuracy in the classification of temporally analyzed Free-Spoken Digit Data These results expand upon the class of viable memristive materials available for the production of functional nanowire networks and bolster the utility of ASN-based devices as unique hardware platforms for neuromorphic computing applications involving memory, adaptation and learning.


2013 ◽  
Vol 24 (38) ◽  
pp. 384004 ◽  
Author(s):  
Henry O Sillin ◽  
Renato Aguilera ◽  
Hsien-Hang Shieh ◽  
Audrius V Avizienis ◽  
Masakazu Aono ◽  
...  

Author(s):  
J. C. Russ ◽  
T. Taguchi ◽  
P. M. Peters ◽  
E. Chatfield ◽  
J. C. Russ ◽  
...  

Conventional SAD patterns as obtained in the TEM present difficulties for identification of materials such as asbestiform minerals, although diffraction data is considered to be an important method for making this purpose. The preferred orientation of the fibers and the spotty patterns that are obtained do not readily lend themselves to measurement of the integrated intensity values for each d-spacing, and even the d-spacings may be hard to determine precisely because the true center location for the broken rings requires estimation. We have implemented an automatic method for diffraction pattern measurement to overcome these problems. It automatically locates the center of patterns with high precision, measures the radius of each ring of spots in the pattern, and integrates the density of spots in that ring. The resulting spectrum of intensity vs. radius is then used just as a conventional X-ray diffractometer scan would be, to locate peaks and produce a list of d,I values suitable for search/match comparison to known or expected phases.


Author(s):  
K. Z. Botros ◽  
S. S. Sheinin

The main features of weak beam images of dislocations were first described by Cockayne et al. using calculations of intensity profiles based on the kinematical and two beam dynamical theories. The feature of weak beam images which is of particular interest in this investigation is that intensity profiles exhibit a sharp peak located at a position very close to the position of the dislocation in the crystal. This property of weak beam images of dislocations has an important application in the determination of stacking fault energy of crystals. This can easily be done since the separation of the partial dislocations bounding a stacking fault ribbon can be measured with high precision, assuming of course that the weak beam relationship between the positions of the image and the dislocation is valid. In order to carry out measurements such as these in practice the specimen must be tilted to "good" weak beam diffraction conditions, which implies utilizing high values of the deviation parameter Sg.


Author(s):  
Klaus-Ruediger Peters

Differential hysteresis processing is a new image processing technology that provides a tool for the display of image data information at any level of differential contrast resolution. This includes the maximum contrast resolution of the acquisition system which may be 1,000-times higher than that of the visual system (16 bit versus 6 bit). All microscopes acquire high precision contrasts at a level of <0.01-25% of the acquisition range in 16-bit - 8-bit data, but these contrasts are mostly invisible or only partially visible even in conventionally enhanced images. The processing principle of the differential hysteresis tool is based on hysteresis properties of intensity variations within an image.Differential hysteresis image processing moves a cursor of selected intensity range (hysteresis range) along lines through the image data reading each successive pixel intensity. The midpoint of the cursor provides the output data. If the intensity value of the following pixel falls outside of the actual cursor endpoint values, then the cursor follows the data either with its top or with its bottom, but if the pixels' intensity value falls within the cursor range, then the cursor maintains its intensity value.


2020 ◽  
Vol 8 (38) ◽  
pp. 13368-13374
Author(s):  
Muhammad Umair Khan ◽  
Gul Hassan ◽  
Jinho Bae

This paper proposes a novel soft ionic liquid (IL) electrically functional device that displays resistive memory characteristics using poly(acrylic acid) partial sodium salt (PAA-Na+:H2O) solution gel and sodium hydroxide (NaOH) in a thin polydimethylsiloxane (PDMS) cylindrical microchannel.


2004 ◽  
Vol 212 (3) ◽  
pp. 135-151 ◽  
Author(s):  
Siegfried Ludwig Sporer ◽  
Beate Küpper

Zusammenfassung. Im Zentrum dieser Untersuchung steht die Frage, wodurch wir tatsächlich Erlebtes von lediglich Vorgestelltem, durch Gedanken oder unsere Fantasie Geschaffenem, unterscheiden können. Diese und ähnliche Fragestellungen werden im Rahmen des Realitätsüberwachungsansatzes untersucht, allerdings mit relativ einfachen Handlungssequenzen. Ziel dieser Untersuchung war, diesen Ansatz auf komplexere autobiografische Erlebnisse auszudehnen und seine Brauchbarkeit bei der Diskrimination von erlebten vs. erfundenen Erlebnissen zu überprüfen. Wir ließen 100 Studierende, Schüler und Auszubildende innerhalb einer Woche je eine auf einem tatsächlichen, “besonderen“ Erlebnis beruhende und eine frei erfundene Geschichte - in ausbalancierter Reihenfolge - niederschreiben. Im Anschluss daran sollten die Verfasser die Geschichten anhand des Selbstbeurteilungsbogens von Erinnerungsqualitäten (SBEQ) - einer adaptierten Fassung von Johnson, Foley, Suengas und Raye’s (1988) Memory Characteristics Questionnaire - einschätzen. Die Ratings wurden getrennt für erlebte und erfundene Geschichten Faktorenanalysen unterzogen. Auf Grund theoretischer Vorüberlegungen und dieser Faktorenanalysen wurden acht Skalen von Erinnerungsqualitäten gebildet, die sich als Klarheit und Lebendigkeit, Sensorische Informationen, Räumlichkeit, Zeitangaben, Emotionen und Gefühle, Rekonstruierbarkeit, Realitätsnähe und Kognitive Operationen interpretieren lassen. Eine multivariate Varianzanalyse mit Wahrheitsstatus, Vorbereitung der Erzählung und Gechlecht der TeilnehmerInnen diskriminierte hochsignifikant zwischen erlebten und erfundenen Geschichten auf 6 der 8 Skalen. Die Zeit zur Vorbereitung der Erzählung hatte nur bei 2 Skalen eine Bedeutung. Die Ergebnisse werden in die theoretische Diskussion um Realitätsüberwachungsprozesse eingebettet.


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