The basic ideas of conformal cyclic cosmology

2012 ◽  
Author(s):  
Roger Penrose
Keyword(s):  
Conformal Cyclic Cosmology ◽  
Basic Ideas

A hitchhiker’s guide to microscopy and microanalysis using telecommunications, e-mail, and the Internet

1994 ◽  
Vol 52 ◽  
pp. 390-391 ◽  
Author(s):  
Nestor J. Zaluzec
Keyword(s):  
The Internet ◽  
Information Superhighway ◽  
The World ◽  
Exchange Information ◽  
On Line ◽  
Computer Based ◽  
Software And Hardware ◽  
Communication Software ◽  
Basic Ideas ◽  
E Mail

The Information SuperHighway, Email, The Internet, FTP, BBS, Modems, : all buzz words which are becoming more and more routine in our daily life. Confusing terminology? Hopefully it won't be in a few minutes, all you need is to have a handle on a few basic concepts and terms and you will be on-line with the rest of the "telecommunication experts". These terms all refer to some type or aspect of tools associated with a range of computer-based communication software and hardware. They are in fact far less complex than the instruments we use on a day to day basis as microscopist's and microanalyst's. The key is for each of us to know what each is and how to make use of the wealth of information which they can make available to us for the asking. Basically all of these items relate to mechanisms and protocols by which we as scientists can easily exchange information rapidly and efficiently to colleagues in the office down the hall, or half-way around the world using computers and various communications media. The purpose of this tutorial/paper is to outline and demonstrate the basic ideas of some of the major information systems available to all of us today. For the sake of simplicity we will break this presentation down into two distinct (but as we shall see later connected) areas: telecommunications over conventional phone lines, and telecommunications by computer networks. Live tutorial/demonstrations of both procedures will be presented in the Computer Workshop/Software Exchange during the course of the meeting.

Basic Ideas and Principles for Quantifying Regional Blood Flow with Nuclear Medical Techniques

1996 ◽  
Vol 35 (05) ◽  
pp. 181-185 ◽  
Author(s):  
H. Herzog
Keyword(s):  
Blood Flow ◽  
Nuclear Medicine ◽  
Regional Blood Flow ◽  
Visual Presentation ◽  
Regional Cerebral Blood ◽  
Basic Principles ◽  
Parametric Images ◽  
Major Application ◽  
Basic Ideas ◽  
The Brain

SummaryThe measurement of blood flow in various organs and its visual presentation in parametric images is a major application in nuclear medicine. The purpose of this paper is to summarize the most important nuclear medicine procedures used to quantify regional blood flow. Starting with the first concepts introduced by Fick and later by Kety-Schmidt the basic principles of measuring global and regional cerebral blood are discussed and their relationships are explained. Different applications and modifications realized first in PET- and later in SPECT-studies of the brain and other organs are described. The permeability and the extraction of the different radiopharmaceuticals are considered. Finally some important instrumental implications are compared.

Particularity of Recognition and Enforcement of Foreign Arbitral Awards in the Russian Federation: Public Policy

2019 ◽  
Vol 19 (1) ◽  
pp. 307-322
Author(s):  
Václav Pravda
Keyword(s):  
Public Policy ◽  
Russian Federation ◽  
Common Knowledge ◽  
Foreign Companies ◽  
The Past ◽  
The Future ◽  
Recognition And Enforcement ◽  
The Russian Federation ◽  
Broad Interpretation ◽  
Basic Ideas

Summary This article elaborates on the issue of recognition and enforcement of foreign arbitral awards in the Russian Federation. It is common knowledge that foreign companies seeking R&E in Russia suffered damage because of the broad interpretation of Russian public policy in the past decades. However, it is uncertain how the present judicial development appears like and where it will lead in the future. The article specifically considers two basic ideas on the issue at hand: one is slightly critical (Karabelnikov) while the second is rather optimistic in regard with the recent development (Zykov). The main goal is to introduce the issue to the respective readers and to try to inflame a discussion.

Zur Kritik der Kultur in der arabisch-islamischen Philosophie der Gegenwart

2008 ◽  
Vol 2008 (1) ◽  
pp. 59-72
Author(s):  
Sarhan Dhouib
Keyword(s):  
Islamic Culture ◽  
Islamic Philosophy ◽  
Close Relationship ◽  
Basic Ideas ◽  
Intellectual Crisis

In contemporary Arab-Islamic philosophy there is increasing interest in the criticism of conceptions of culture and identity. The paradigms of these criticisms can be studied in an exemplary way in the works of the Moroccan philosopher Mohammed 'Abid al-Garibi. They reflect the close relationship between the problem of identity and the question of the »heritage« of Arab-islamic philosophy. The topics discussed include al-Garibi's rejection of the ahistorical interpretations of the religious, orientalistic, and Marxist Salafiyya and the extent to which his criticism of these intellectual currents is based upon a rational revival of the critique of Arab-islamic culture. Finally, the essay considers the basic ideas of a critique of »arabic reason« and its reformulation of Rationalism and seeks to show that al-Gabiri's return to Averroes opens up a new way out of the intellectual crisis in Arab-islamic societies.

Lecturas posibles sobre la construcción del actor económico

2017 ◽  
pp. 163
Author(s):  
Nicolás Gómez Núñez
Keyword(s):  
Economic Growth ◽  
Public Policies ◽  
Local Level ◽  
Endogenous Development ◽  
Economic Activities ◽  
The Public ◽  
Basic Ideas

En tres breves capítulos, el artículo pone a disposición las ideas básicas que cruzan la reflexión sobre las actividades económicas que las personas realizan en condiciones de pobreza, destacándose la preocupación sobre si estos desempeños pueden constituirse en alternativas de crecimiento económico a nivel local o si ellas son actores que inciden en las políticas públicas que organizan los supuestos del desarrollo.Palabras clave Actividades Económicas Autogestionadas / Autonomía / Capacitación / Desarrollo Endógeno.Abstract:In three brief chapters, the article displays the basic ideas that intersect the reflection on the economic activities that people perform in conditions of poverty, standing out the concern whether these performances can constitute in alternatives of economic growth at the local level or whether they are activities that affect the public policies which organize the theories of development.Key words Self-managed economic activities / Autonomy / Training / Endogenous Development

Materials for bullet core

2020 ◽  
Vol 2020 (10) ◽  
pp. 8-21
Author(s):  
A. G. Kolmakov ◽  
◽  
I. O. Bannykh ◽  
V. I. Antipov ◽  
L. V. Vinogradov ◽  
...  
Keyword(s):  
High Speed ◽  
Bending Strength ◽  
Low Alloy Steels ◽  
Hard Alloys ◽  
Small Arms ◽  
Alloy Steels ◽  
Materials Used ◽  
Basic Ideas ◽  
New Generation ◽  
Natural Composite

he basic ideas about the process of introducing cores into protective barriers and the most common core patterns and their location in conventional and sub-caliber small arms bullets are discussed. The materials used for manufacture of cores are analyzed. It is concluded that for mass bullets of increased armor penetration the most rational choice can be considered the use of high-carbon low-alloy steels of a new generation with a natural composite structure and hardness of up to 70 HRC. For specialized armor-piercing bullets, cores made from promising economically-alloyed high-speed steels characterized by a high complex of «hardness—bending strength» are better alternative than ones made of hard alloys or tungsten alloys.

Essentially non-oscillatory and weighted essentially non-oscillatory schemes

Acta Numerica ◽  
2020 ◽  
Vol 29 ◽  
pp. 701-762
Author(s):  
Chi-Wang Shu
Keyword(s):  
Main Idea ◽  
High Order Accuracy ◽  
Finite Difference Schemes ◽  
Approximation Procedure ◽  
Discontinuous Solutions ◽  
Weno Schemes ◽  
Convection Diffusion ◽  
Different Types ◽  
Basic Ideas ◽  
Weighted Eno

Essentially non-oscillatory (ENO) and weighted ENO (WENO) schemes were designed for solving hyperbolic and convection–diffusion equations with possibly discontinuous solutions or solutions with sharp gradient regions. The main idea of ENO and WENO schemes is actually an approximation procedure, aimed at achieving arbitrarily high-order accuracy in smooth regions and resolving shocks or other discontinuities sharply and in an essentially non-oscillatory fashion. Both finite volume and finite difference schemes have been designed using the ENO or WENO procedure, and these schemes are very popular in applications, most noticeably in computational fluid dynamics but also in other areas of computational physics and engineering. Since the main idea of the ENO and WENO schemes is an approximation procedure not directly related to partial differential equations (PDEs), ENO and WENO schemes also have non-PDE applications. In this paper we will survey the basic ideas behind ENO and WENO schemes, discuss their properties, and present examples of their applications to different types of PDEs as well as to non-PDE problems.

Sign in / Sign up

Export Citation Format

Share Document