Developing the matrix representation grid (MRG): A method for observing group processes. Findings from time-limited group psychotherapy for alcohol-dependent patients

Group ◽  
1996 ◽  
Vol 20 (2) ◽  
pp. 145-173 ◽  
Author(s):  
Göran Ahlin ◽  
Christer Sandahl ◽  
Kristina Herlitz ◽  
Ingela Brimberg
Keyword(s):  
Group Psychotherapy ◽  
Matrix Representation ◽  
Group Processes ◽  
The Matrix ◽  
Alcohol Dependent

How to be a ‘good enough’ group analyst

2018 ◽  
Vol 52 (2) ◽  
pp. 204-217 ◽  
Author(s):  
Mário David
Keyword(s):  
Group Therapy ◽  
Group Dynamics ◽  
Group Processes ◽  
Personal Attributes ◽  
Personal Style ◽  
Face To Face ◽  
The Matrix ◽  
Therapy Sessions ◽  
Training Practice ◽  
Analytic Attitude

A group analyst has an enormous influence over the group dynamics (the ‘matrix’) and this derives from his or her ‘identity or group analytic attitude’ which has been developed through training, practice and group analytic supervision. Each group analyst must develop personal attributes and also affective/cognitive capabilities required to become a ‘good enough group analyst’. Throughout group therapy sessions, specific dimensions appear related to each group analyst. These are of particular importance for a good evolution of group processes, pertaining to his ‘presence’ face-to-face with the group and to his personal ‘style’.

MRHS solver based on linear algebra and exhaustive search

2018 ◽  
Vol 12 (3) ◽  
pp. 143-157 ◽  
Author(s):  
Håvard Raddum ◽  
Pavol Zajac
Keyword(s):  
Linear Algebra ◽  
Matrix Representation ◽  
Equation System ◽  
Exhaustive Search ◽  
Binary Matrix ◽  
Algebraic Attacks ◽  
The Matrix ◽  
Speed Up ◽  
Symmetric Key

Abstract We show how to build a binary matrix from the MRHS representation of a symmetric-key cipher. The matrix contains the cipher represented as an equation system and can be used to assess a cipher’s resistance against algebraic attacks. We give an algorithm for solving the system and compute its complexity. The complexity is normally close to exhaustive search on the variables representing the user-selected key. Finally, we show that for some variants of LowMC, the joined MRHS matrix representation can be used to speed up regular encryption in addition to exhaustive key search.

Molecular and morphometric characterisation of Xiphinema globosum Sturhan, 1978 (Nematoda: Longidoridae) from Spain

Nematology ◽  
2011 ◽  
Vol 13 (1) ◽  
pp. 17-28 ◽  
Author(s):  
Blanca Landa ◽  
Carolina Cantalapiedra-Navarrete ◽  
Juan Palomares-Rius ◽  
Pablo Castillo ◽  
Carlos Gutiérrez-Gutiérrez
Keyword(s):  
Phylogenetic Trees ◽  
18S Rrna ◽  
Matrix Representation ◽  
Natural Environments ◽  
28S Rrna ◽  
Parsimony Method ◽  
Rdna Genes ◽  
Supertree Method ◽  
The Matrix ◽  
Relationship Of

AbstractDuring a recent nematode survey in natural environments of the Los Alcornocales Regional Park narrow valleys, viz., the renowned 'canutos' excavated in the mountains that maintain a humid microclimate, in southern Spain, an amphimictic population of Xiphinema globosum was identified. Morphological and morphometric studies on this population fit the original and previous descriptions and represent the first report from Spain and southern Europe. Molecular characterisation of X. globosum from Spain using D2-D3 expansion regions of 28S rRNA, 18S rRNA and ITS1-rRNA is provided and maximum likelihood and Bayesian inference analysis were used to reconstruct phylogenetic relationships within X. globosum and other Xiphinema species. A supertree solution of the different phylogenetic trees obtained in this study and in other published studies using rDNA genes are presented using the matrix representation parsimony method (MRP) and the most similar supertree method (MSSA). The results revealed a closer phylogenetic relationship of X. globosum with X. diversicaudatum, X. bakeri and with some sequences of unidentified Xiphinema spp. deposited in GenBank.

Leontev Input-Output Balance Model as a Dynamic System Control Problem

2021 ◽  
pp. 66-82
Author(s):  
S.N. Masaev
Keyword(s):  
Dynamic System ◽  
Matrix Representation ◽  
External Environment ◽  
Balance Model ◽  
System Control ◽  
Operational Mode ◽  
Input Output ◽  
System A ◽  
The Matrix ◽  
Research Show

The purpose of the study was to determine the problem of control of a dynamic system of higher dimension. Relying on Leontev input-output balance, we formalized the dynamic system and synthesized its control. Within the research, we developed a mathematical model that combines different working objects that consume and release various resources. The value of the penalty for all nodes and objects is introduced into the matrix representation of the problem, taking into account various options for their interaction, i.e., the observation problem. A matrix representation of the planning task at each working object is formed. For the formed system, a control loop is created; the influencing parameters of the external environment are indicated. We calculated the system operational mode, taking into account the interaction of the nodes of objects with each other when the parameters of the external environment influence them. Findings of research show that in achieving a complex result, the system is inefficient without optimal planning and accounting for the matrix of penalties for the interaction of nodes and objects of the dynamic system with each other. In a specific example, for a dynamic system with a dimension of 4.8 million parameters, we estimated the control taking into account the penalty matrix, which made it possible to increase the inflow of additional resources from the outside by 2.4 times from 130 billion conv. units up to 310 conv. units in 5 years. Taking into account the maximum optimization of control in the nodes, an increase of 3.66 times in the inflow of additional resources was ensured --- from 200.46 to 726.62 billion rubles

History of the Operative Group Technique

FORUM ◽  
2009 ◽  
pp. 7-18
Author(s):  
Enrique Pichon-Rivičre
Keyword(s):  
Group Psychotherapy ◽  
Latin American ◽  
International Association ◽  
Group Processes ◽  
Joint Effort ◽  
American Federation ◽  
History Of ◽  
Analytical Group ◽  
English Speaking ◽  
Present Text

- This is the first published article of Pichon-Rivičre in English known to his estate. It is the product of a joint effort of the Latin-American Federation for Analytical Group Psychotherapy (FLAPAG) and FORUM - Journal of the International Association for Group Psychotherapy and Group Processes to make Pichon-Rivičre's work better known to the English speaking community. The present text is the transcription of a class originally given by Dr. Enrique Pichon-Rivičre on 13 May 1970. It was first published by Temas de Psicologia Social, year 4, number 3, September 1980 and later incorporated into the second edition of ‘El Processo Grupal' Ediciones Nueva Visión, Buenos Aires, 1985. It is published here with the authorization of the Pichon-Rivičre family whom we thank deeply. Translated by Pablo de Carvalho Godoy Castanho (FLAPAG) and Teresa von Sommaruga Howard (FORUM) from the Spanish original collated against the French translation by Daničle Faugeras.

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