Topological transformation of a trefoil knot into a [2]catenane

2017 ◽  
Vol 46 (47) ◽  
pp. 16474-16479 ◽  
Author(s):  
Thirumurugan Prakasam ◽  
Rana A. Bilbeisi ◽  
Roberto El-Khoury ◽  
Loïc J. Charbonnière ◽  
Mourad Elhabiri ◽  
...  
Keyword(s):  
Thermodynamic Investigation ◽  
Topological Transformation ◽  
Trefoil Knot

Kinetic and thermodynamic investigation of topological transformation of a trefoil knot into a [2]catenane in water.

Computational Capacity of Complex Memcapacitive Networks

2021 ◽  
Vol 17 (2) ◽  
pp. 1-25
Author(s):  
Dat Tran ◽  
Christof Teuscher
Keyword(s):  
Power Consumption ◽  
Small World ◽  
Fading Memory ◽  
Reservoir Computing ◽  
Topological Transformation ◽  
Trade Off ◽  
Topological Structures ◽  
Computational Capacity ◽  
Computational Capability ◽  
Comparable Performance

Emerging memcapacitive nanoscale devices have the potential to perform computations in new ways. In this article, we systematically study, to the best of our knowledge for the first time, the computational capacity of complex memcapacitive networks, which function as reservoirs in reservoir computing, one of the brain-inspired computing architectures. Memcapacitive networks are composed of memcapacitive devices randomly connected through nanowires. Previous studies have shown that both regular and random reservoirs provide sufficient dynamics to perform simple tasks. How do complex memcapacitive networks illustrate their computational capability, and what are the topological structures of memcapacitive networks that solve complex tasks with efficiency? Studies show that small-world power-law (SWPL) networks offer an ideal trade-off between the communication properties and the wiring cost of networks. In this study, we illustrate the computing nature of SWPL memcapacitive reservoirs by exploring the two essential properties: fading memory and linear separation through measurements of kernel quality. Compared to ideal reservoirs, nanowire memcapacitive reservoirs had a better dynamic response and improved their performance by 4.67% on three tasks: MNIST, Isolated Spoken Digits, and CIFAR-10. On the same three tasks, compared to memristive reservoirs, nanowire memcapacitive reservoirs achieved comparable performance with much less power, on average, about 99× , 17×, and 277×, respectively. Simulation results of the topological transformation of memcapacitive networks reveal that that topological structures of the memcapacitive SWPL reservoirs did not affect their performance but significantly contributed to the wiring cost and the power consumption of the systems. The minimum trade-off between the wiring cost and the power consumption occurred at different network settings of α and β : 4.5 and 0.61 for Biolek reservoirs, 2.7 and 1.0 for Mohamed reservoirs, and 3.0 and 1.0 for Najem reservoirs. The results of our research illustrate the computational capacity of complex memcapacitive networks as reservoirs in reservoir computing. Such memcapacitive networks with an SWPL topology are energy-efficient systems that are suitable for low-power applications such as mobile devices and the Internet of Things.

Thermodynamic Investigation of Ti-H System by Molten Salt Electrochemical Technique

2001 ◽  
Vol 148 (1) ◽  
pp. E38 ◽  
Author(s):  
Tokujiro Nishikiori ◽  
Toshiyuki Nohira ◽  
Yasuhiko Ito
Keyword(s):  
Molten Salt ◽  
Electrochemical Technique ◽  
Thermodynamic Investigation

scholarly journals Comparative investigation of working fluids for an organic Rankine cycle with geothermal water

2015 ◽  
Vol 36 (2) ◽  
pp. 75-84
Author(s):  
Yan-Na Liu ◽  
Song Xiao
Keyword(s):  
Power Generation ◽  
Pressure Ratio ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Comparative Investigation ◽  
Geothermal Water ◽  
Thermodynamic Investigation ◽  
Working Fluids ◽  
Temperature Heat ◽  
Input Pressure

AbstractIn this paper, the thermodynamic investigation on the use of geothermal water (130 °C as maximum) for power generation through a basic Rankine has been presented together with obtained main results. Six typical organic working fluids (i.e., R245fa, R141b, R290, R600, R152a, and 134a) were studied with modifying the input pressure and temperature to the turbine. The results show that there are no significant changes taking place in the efficiency for these working fluids with overheating the inlet fluid to the turbine, i.e., efficiency is a weak function of temperature. However, with the increasing of pressure ratio in the turbine, the efficiency rises more sharply. The technical viability is shown of implementing this type of process for recovering low temperature heat resource.

Structural and thermodynamic investigation of the hydration-dehydration process of Na + -Montmorillonite using DFT calculations

2017 ◽  
Vol 143 ◽  
pp. 212-219 ◽  
Author(s):  
Carla G. Fonseca ◽  
Viviane S. Vaiss ◽  
Fernando Wypych ◽  
Renata Diniz ◽  
Alexandre A. Leitão
Keyword(s):  
Dft Calculations ◽  
Dehydration Process ◽  
Thermodynamic Investigation
Sign in / Sign up

Export Citation Format

Share Document