Hamiltonian Energy Computation of a Novel Memristive Mega-Stable Oscillator (MMO) with Dissipative, Conservative and Repelled Dynamics

2021 ◽  
Author(s):  
M. D. Vijayakumar ◽  
Hayder Natiq ◽  
Maxim Idriss Tametang Meli ◽  
Leutcho Gervais Dolvis ◽  
Zeric Tabekoueng Njitacke
Keyword(s):  
Energy Computation

scholarly journals A PKC-based security architecture for WSN

2020 ◽  
Vol 309 ◽  
pp. 02006
Author(s):  
Jianbo Yao ◽  
Chaoqiong Yang
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Public Key Cryptography ◽  
Public Key ◽  
Wireless Sensor ◽  
Security Architecture ◽  
Important Challenge ◽  
Identity Based ◽  
And Storage ◽  
Energy Computation

It is an important challenge to find out suitable cryptography for WSN due to limitations of energy, computation capability and storage resources. Considering this sensor feature on limitations of resources, a security architecture based-on public key cryptography is proposed. The security architecture is based on identity based cryptosystem, but not requires key handshaking. The analysis shows that the security architecture ensures a good level of security and is very much suitable for the resources constrained trend of wireless sensor network.

scholarly journals Optimal Control Approach to Lambert’s Problem and Gibbs’ Method

2020 ◽  
Vol 10 (7) ◽  
pp. 2419
Author(s):  
Minjeong Kim ◽  
Sungsu Park
Keyword(s):  
Optimal Control ◽  
Pseudospectral Method ◽  
Orbital Energy ◽  
Control Approach ◽  
Control Framework ◽  
Lambert’S Problem ◽  
Computation Algorithm ◽  
Lambert's Problem ◽  
Energy Computation ◽  
Optimal Control Approach

This paper presents the optimal control approach to solve both Lambert’s problem and Gibbs’ method, which are commonly used for preliminary orbit determination. Lambert’s problem is reinterpreted with Hamilton’s principle and is converted to an optimal control problem. Various extended Lambert’s problems are formulated by modifying the weighting and constraint settings within the optimal control framework. Furthermore, Gibbs’ method is also converted to an extended Lambert’s problem with two position vectors and one orbit energy with the help of the proposed orbital energy computation algorithm. The proposed extended Lambert’s problem and Gibbs’ method are numerically solved with the Lobatto pseudospectral method, and their accuracies are verified by numerical simulations.

BOSE–EINSTEIN CONDENSATION IN BULK AND CONFINED SOLID HELIUM

2006 ◽  
Vol 20 (30n31) ◽  
pp. 5081-5092 ◽  
Author(s):  
L. REATTO ◽  
M. ROSSI ◽  
D. E. GALLI
Keyword(s):  
Wave Function ◽  
Ground State ◽  
Solid Helium ◽  
System Size ◽  
Einstein Condensation ◽  
Cylindrical Pore ◽  
Simulated System ◽  
The One ◽  
Bose Einstein ◽  
Energy Computation

We address the question if the ground state of solid 4 He has the number of lattice sites equal to the number of atoms (commensurate state) or if it is different (incommensurate state). We point out that energy computation from simulation as performed by now cannot be used to decide this question and that the presently best variational wave function, a shadow wave function, gives an incommensurate state. We have extended the calculation of the one–body density matrix ρ1 to the exact Shadow Path Integral Ground State method. Calculation of ρ1 at ρ = 0.031 Å-3 shows that Vacancy–Interstitial pair processes are present also in the exact computation but the simulated system size is too small to infer the presence of off–diagonal long range order. Variational simulations of 4 He confined in a narrow cylindrical pore are also discussed.

Accurate Wind Turbine Annual Energy Computation by Advanced Modeling

2017 ◽  
Vol 53 (3) ◽  
pp. 1761-1768 ◽  
Author(s):  
Hussein M. K. Al-Masri ◽  
Abdullah A. Almehizia ◽  
Mehrdad Ehsani
Keyword(s):  
Wind Turbine ◽  
Energy Computation
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