Dressed soliton in a plasma with two warm ion species

1982 ◽  
Vol 60 (2) ◽  
pp. 154-161 ◽  
Author(s):  
R. S. Tiwari ◽  
S. R. Sharma
Keyword(s):  
Reductive Perturbation Method ◽  
Ion Concentration ◽  
Mass Ratio ◽  
The Core ◽  
Maximum Value ◽  
Dressed Soliton ◽  
Time Variables ◽  
Ion Acoustic Soliton ◽  
Ion Species ◽  
Core Part

Propagation of an ion acoustic soliton in a plasma consisting of two warm ion species and hot isothermal electrons is considered, using multiple space time variables in the reductive perturbation method. Expressions have been derived for first and second order potentials. Behaviour of the amplitude of the core part of the soliton shows that initially it decreases rapidly as the light ion concentration increases, assumes a minimum value, and then gradually attains maximum value at α = 1. It has been observed that the soliton may not exist in a certain range of light ion concentration determined by the mass ratio and temperature of ions. The velocity and the width of the soliton are also studied as function of its amplitude.

scholarly journals Microbiological aspects of biogenic amines formation in ripening cheeses

2007 ◽  
Vol 55 (4) ◽  
pp. 23-28
Author(s):  
Olga Cwiková ◽  
Vlastimil Dohnal ◽  
Tomáš Komprda
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Biogenic Amines ◽  
Starter Cultures ◽  
Part C ◽  
The Core ◽  
Edge Part ◽  
Core Part ◽  
Hard Cheese ◽  
Microbiological Aspects

Counts of lactic acid bacteria (LAB), total anaerobes and enterococci were determined in the course of ripening in the edge part (E) and the core part (C) of Dutch-type semi-hard cheese produced with different fat content (30 and 45 %) by two different producers (H and R) using two different starter cultures (L and Y). Counts of LAB at the beginning of ripening (day 0) in H producer´s samples were higher (P < 0,01) in comparison with the R producer´s ones. Count of enterococci was the highest (P < 0,05) at the end of the ripening (176th day) in sample R30YE. Higher (P < 0,01) enterococci counts were in R producer´s cheeses (in comparison with the H producer´s ones). Enterococci contamination was higher (P < 0,05) in E-samples than C-samples. Content of the sum of all BA in cheese was negatively correlated (P < 0,05) with counts of lactic acid bacteria (r = –0,24) and counts of total anaerobes (r = –0,23). No correlation between the sum of BA content and enterococci counts was found.

Design of Urban-Rural Power Grid Dispatching Fault Diagnosis Expert System

2014 ◽  
Vol 539 ◽  
pp. 659-663 ◽  
Author(s):  
Xiu Feng Xu
Keyword(s):  
Fault Diagnosis ◽  
Expert System ◽  
Automatic System ◽  
Power Grid ◽  
The Core ◽  
Scada System ◽  
Urban Rural ◽  
Fault Inference ◽  
Fault Information ◽  
Core Part

The paper designs the urban-rural power grid dispatching fault diagnosis expert system which acquires fault information by SCADA system of automatic system of urban-rural power grid, and uses artificial intellegence method to analyze fault information and make fault diagnosis. The paper implements the core part of the fault expert systemthe design of knowledge base and fault inference engine.

scholarly journals Turbulent heating in an inhomogeneous magnetized plasma slab

2018 ◽  
Vol 84 (3) ◽  
Author(s):  
Michael Barnes ◽  
P. Abiuso ◽  
W. Dorland
Keyword(s):  
Mean Free Path ◽  
Turbulent Energy ◽  
Magnetized Plasma ◽  
Mass Ratio ◽  
Wave Instability ◽  
Astrophysical Plasmas ◽  
Plasma Slab ◽  
Turbulent Heating ◽  
Ion Species ◽  
Turbulent Cascade

Observational evidence in space and astrophysical plasmas with a long collisional mean free path suggests that more massive charged particles may be preferentially heated. One possible mechanism for this is the turbulent cascade of energy from injection to dissipation scales, where the energy is converted to heat. Here we consider a simple system consisting of a magnetized plasma slab of electrons and a single ion species with a cross-field density gradient. We show that such a system is subject to an electron drift wave instability, known as the universal instability, which is stabilized only when the electron and ion thermal speeds are equal. For unequal thermal speeds, we find from quasilinear analysis and nonlinear simulations that the instability gives rise to turbulent energy exchange between ions and electrons that acts to equalize the thermal speeds. Consequently, this turbulent heating tends to equalize the component temperatures of pair plasmas and to heat ions to much higher temperatures than electrons for conventional mass-ratio plasmas.

Low resistant and stable lithium-garnet electrolyte interface enabled by a multifunctional anode additive for solid-state lithium batteries

2021 ◽  
Author(s):  
Chencheng Cao ◽  
Yijun Zhong ◽  
Kimal Chandula Wasalathilake ◽  
Moses O. Tade ◽  
Xiaomin Xu ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Lithium Batteries ◽  
The Core ◽  
Intrinsic Stability ◽  
Electrolyte Interface ◽  
Lithium Garnet ◽  
Solid State Batteries ◽  
Core Part

Solid-state batteries (SSBs) have attracted considerable attention due to the high intrinsic stability and theoretical energy density. As the core part, garnet electrolyte has been extensively investigated due to high...

Interoperability Issues for Systems Managing Competency Information

2010 ◽  
pp. 83-105
Author(s):  
Bernard Blandin ◽  
Geoffrey Frank ◽  
Simone Laughton ◽  
Kenji Hirata
Keyword(s):  
Supply Chain ◽  
Final Section ◽  
Reference Model ◽  
Research Programme ◽  
Semantic Model ◽  
Research Directions ◽  
The Third ◽  
The Core ◽  
Digital Services ◽  
Core Part

This chapter has four sections. The first one describes how the needs for interoperability in exchanging competency information have been addressed so far. The second part adopts a “Digital Services Supply Chain” approach and discusses the issues related to the exchange of competency information across systems regarding this approach. The third part is the core part of this chapter. It describes the 4 levels of the proposed approach: the Conceptual Reference Model (CRM), the Semantic Model, the Information Model and the Data Model. The final section presents the research directions currently envisaged, and the research programme needed to make the proposed approach operational.

The Right of Access under EU Data Protection Law

2021 ◽  
pp. 104-128
Author(s):  
Helena U. Vrabec
Keyword(s):  
Decision Making ◽  
Data Protection ◽  
Shared Data ◽  
The Core ◽  
Data Protection Law ◽  
The Right ◽  
Automated Decision Making ◽  
Right Of Access ◽  
Data Subject ◽  
Core Part

Chapter 5 focuses on Article 15 of the GDPR and explains the scope of the information that can be accessed under the right. The chapter then discusses the importance of the interface to submit data subject access requests. The core part of Chapter 5 is the analysis of the regulatory boundaries of the right of access and various avenues to limit the right, for instance, a conflict with the rights of another individual. Finally, the chapter illustrates how the right of access is applied in the data-driven economy by applying it to three different contexts: shared data, anonymised/pseudonymised data, and automated decision-making.

Rethinking Software Protection

2021 ◽  
pp. 341-362
Author(s):  
Peter R Slowinski
Keyword(s):  
Artificial Intelligence ◽  
Machine Learning ◽  
Evolutionary Algorithms ◽  
Future Development ◽  
Computer Programs ◽  
Software Protection ◽  
Computing Power ◽  
The Core ◽  
Quantum Leap ◽  
Core Part

The core of artificial intelligence (AI) applications is software of one sort or another. But while available data and computing power are important for the recent quantum leap in AI, there would not be any AI without computer programs or software. Therefore, the rise in importance of AI forces us to take—once again—a closer look at software protection through intellectual property (IP) rights, but it also offers us a chance to rethink this protection, and while perhaps not undoing the mistakes of the past, at least to adapt the protection so as not to increase the dysfunctionality that we have come to see in this area of law in recent decades. To be able to establish the best possible way to protect—or not to protect—the software in AI applications, this chapter starts with a short technical description of what AI is, with readers referred to other chapters in this book for a deeper analysis. It continues by identifying those parts of AI applications that constitute software to which legal software protection regimes may be applicable, before outlining those protection regimes, namely copyright and patents. The core part of the chapter analyses potential issues regarding software protection with respect to AI using specific examples from the fields of evolutionary algorithms and of machine learning. Finally, the chapter draws some conclusions regarding the future development of IP regimes with respect to AI.

FA and Motivating Reasons

2021 ◽  
pp. 153-165
Author(s):  
Toni Rønnow-Rasmussen
Keyword(s):  
Negative Impact ◽  
Guise Of The Good ◽  
The Core ◽  
Motivating Reasons ◽  
Core Elements ◽  
Core Part

The main aim in ‘FA and Motivating Reasons’ is to clear the ground for the discussion in Chapter 11 by drawing attention to some notions and distinctions that help us to understand the core elements of fitting-attitude analysis (FA). In particular, the distinction between explanatory and motivating reason plays a core part in this and the next chapter. In light of this distinction, the focus is on whether we should accept either ‘the guise of the good thesis’ or the more plausible ‘guise of reason thesis’. Eventually (in Chapter 11), it is argued that we should endorse neither of these. While the previous chapters gave us a positive insight (they lead to a modification of the FA pattern of analysis), this—and the next chapter also, as we shall see—will mainly have a negative impact. It suggests we should refrain from introducing certain modifications of FA analysis that at first sight might seem compelling.

Experimental Research on Filtration Performance of Different Filter Medias on Fine Particle Collection

2013 ◽  
Vol 864-867 ◽  
pp. 737-742
Author(s):  
Yan Zheng ◽  
Ning Mao ◽  
Jing Xian Liu ◽  
De Qiang Chang ◽  
Xi Sun
Keyword(s):  
Performance Improvement ◽  
Experimental Research ◽  
Fine Particle ◽  
Experimental Methods ◽  
Bag Filter ◽  
Particle Collection ◽  
The Core ◽  
Filtration Performance ◽  
Dust Catcher ◽  
Core Part

Bag filter is one of the most effective methods of dust catcher, and the filter medias is the core part of bag filters. In this paper, we studied the filtration performance of several common filter medias comparatively through experimental methods, and the results can provide certain basis for the dust removal performance improvement of filter medias.

Sign in / Sign up

Export Citation Format

Share Document