Group Analysis Theory Research Articles

Study on the symmetries and conserved quantities of flexible mechanical multibody dynamics

<abstract> <p>In this paper, in order to provides a powerful new tool for quantitative and qualitative analysis of dynamics properties in flexible mechanical multibody systems, the symmetry theory and numerical algorithms for preserving structure in modern analytical mechanics is introduced into flexible multibody dynamics. First, taking the hub-beam systems as an example, the original nonlinear partial differential-integral equations of the system dynamics model are discretized into the finite-dimensional Lagrange equations by using the assumed modal method. Second, the group analysis theory is introduced and the criterion equations and the corresponding conserved quantities of Noether symmetries are given according to the invariance principle, which provide an effective way for analytic integral theory of dynamic equations. Finally, a conserved quantity-preserving numerical algorithm is constructed by coordinates incremental discrete gradient, which makes full use of the invariance of conserved quantity to eliminate the error consumption for a long time. The simulation results show that the deeper mechanical laws and motion characteristics of flexible mechanical multibody systems dynamics can be obtained with the help of symmetries and conserved quantities, which can provide reference for more precise dynamic optimization design and advanced control of systems.</p> </abstract>

覆冰输电导线舞动的Noether对称性和守恒量

To overcome the non-structure-preserving drawbacks in traditional numerical simulation of transmission-line nonlinear vibration responses, the Noether symmetry and conserved quantity of transmission lines’ 2-way galloping under ice and wind excitation were studied. Firstly, in view of the nonlinearity of the aerodynamic force and the line geometry, a 2-DOF galloping model of vertical and torsional vibrations was established based on the analytical mechanics method. Secondly, the group analysis theory was introduced, and the condition and the conserved quantity of the Noether symmetry were given according to the invariance principle. Finally, a conserved quantity-preserving discrete numerical algorithm was constructed. The dynamic characteristics of the nonlinear mechanical structure were studied with the Noether symmetry theory. The results show that, the proposed novel method is structure-preserving in a wide range of application, and is reliable and accurate.

Dis-Identity: New Forms of Identity and Psychopathology—Socioanthropological Changes and Self-Development

The passage from modernity to postmodernity deeply upset the group dimension, and, consequently, personal identity itself. Transformations involving the entire planet, socioanthropological changes our society had to cope with, are producing a change in the dynamics of identity formation and the appearance of new psychopathological figures. The loss of cohesion of the sense of belonging and the weak internalization process of the elements that form the individual identity (cultural, linguistic, religious traditions, etc.) draw an essentially uncertain and temporary existence. Drawing on some themes of subjectual group analysis theory of personality, the article proposes the concept of dis-identity as key to read ongoing psychic changes.

Foulkes and Intersubjectivity: A Pioneer in Uncharted Territories

Since the 1940s Foulkes developed his theory of group analysis. Originating from Freudian psychoanalysis, Foulkes—through his experiences with groups—developed new concepts about human motivation, pathogenesis of mental illness and therapeutic options. In contrast to drive theory, he postulated relationality, search for contact and exchange, and belongingness as central motivations. In a sometimes surprising congruence with Foulkes’ ideas, the intersubjective-relational paradigm came into being during the 1980s and has since, as ‘intersubjective turn’, substantially influenced contemporary psychoanalytic theorizing. It could serve as a bridge between different psychoanalytic schools as well as between contemporary psychoanalysis and group analysis.Basic tenets of group analysis and relational psychoanalysis are demonstrated, differences and similarities pointed out.

1285 – Training of bosnia-herzegovina mental health professionals in group analysis as the factor of development of culture of dialogue in the aftermath ofthe 1992–1995 war

Aim The primary objective will focus the first of all on Group Analysis (GA) as the psychotherapy method and theory of group analysis applied particularly in post-war environments. It outlines in particular a Zagreb Institute for GA Training Programme that took place in Tuzla University Clinical Centre, Department of Psychiatry, in Bosnia-Herzegovina (BH) in response to 1992–1995 war, in helping to train mental health workers in GA to enable them to treat psychological trauma symptoms of war survivors. Method In the GA education in the period of 16 years mental health professionals employed in mental health services were involved as well as other care employees as General Practitioners, Family physicians, pediatricians, gynecologists and neurosurgeons, psychologists and special educators. Results Trainees in education were from greater part of BH, and from several towns from neighborhoods countries. In this way a new room for mutual exchanges of experiences and establishing of cooperation was created. Idea of group analytic treatment of persons with mental health problems spread out on the whole region of BH through this model of education. The future of GA application as a psychotherapy model in BH confirmed through established models of education which are employed inowadays in Tuzla, Sarajevo and Mostar. The future of GA is provided in activities focused on foundations of the Institute for Analysis in Tuzla. Conclusion Training of Bosnia-Herzegovina mental health workers to effectively use GA with enthusiastic help of GA trainers from Institute for GA Zagreb will develop dialogue culture in postwar BH.

P-1143 - Training bosnia-herzegovina mental health workers in group analysis in the aftermath of the 1992–1995 war

Aim The primary objective will focus the first of all on Group Analysis (GA) as the psychotherapy method and theory of group analysis applied particularly in post-war environments. It outlines in particular a Zagreb Institute for GA Training Programme that took place in Tuzla University Clinical Centre, Department of Psychiatry, in Bosnia-Herzegovina (BH) in response to 1992–1995 war, in helping to train mental health workers in GA to enable them to treat psychological trauma symptoms of war survivors. Method Authors described educational process considering the history of idea and its realization through training levels and process of supervision which was provided from the Institute for GA, Department for Psychology Medicine, School of Medicine in University of Zagreb, Croatia in sharing skills of GA to mental health therapists in BH. Results Highly dedicated internationally approved trainers from GA provided completed training for trainees: neuro- psychiatrists, residents, nurses, psychologists, social workers, special educators, paediatrician, and gynaecologist from several different institutions from seven different cities in BH and Croatia. Training started during the war period with introduction course and continues with Diploma Courses. To be accredited GA therapists all trainees are obliged to practice GA therapy with clients under the supervision process of GA supervisors. Nowadays there are 7 graduated Group Analysts in BH. Three of them are in process of training for educators. Conclusion Training of Bosnia-Herzegovina mental health workers to effectively use GA with enthusiastic help of GA trainers from Institute for GA Zagreb will increase psychotherapy capacities in postwar BH.

Fuggire alla fusionalitŕ e alla morte in adolescenza

- The aims of this work is to make a comment that reach a cognitive evolutionary point of view looking also to the group analysis theory. The focus is on the individuation process that, through different psychotherapy intervention bring the family to became a group of individuals. Key Words: Suicide, Attachment Style, Motivational System, Dissociation, Integration

The Philosophy of S.H. Foulkes: Existential-Phenomenological Aspects of Group Analysis

Though S.H. Foulkes has not presented to us a detailed outline of a theory of group analysis, his philosophy (as he called it) can be found dispersed throughout his articles and books. This article attempts to gather various strands of his thinking about groups and show that many of his ideas have a strong affinity with certain aspects of existential phenomenology.

Organic Functional Group Analysis & Organic Functional Group Analysis—Theory and Development

Organic Functional Group Analysis & Organic Functional Group Analysis—Theory and Development