scholarly journals On the group-theoretical approach to the study of interpenetrating nets

2016 ◽  
Vol 72 (3) ◽  
pp. 366-375 ◽  
Author(s):  
Igor A. Baburin
Keyword(s):  
Automorphism Group ◽  
Theoretical Approach ◽  
Theoretical Framework ◽  
Acta Cryst ◽  
Space Group ◽  
Multiple Copies ◽  
Hopf Ring ◽  
Ring Net ◽  
Edge Crossings

Using group–subgroup and group–supergroup relations, a general theoretical framework is developed to describe and derive interpenetrating 3-periodic nets. The generation of interpenetration patterns is readily accomplished by replicating a single net with a supergroupGof its space groupHunder the condition that site symmetries of vertices and edges are the same in bothHandG. It is shown that interpenetrating nets cannot be mapped onto each other by mirror reflections because otherwise edge crossings would necessarily occur in the embedding. For the same reason any other rotation or roto-inversion axes fromG \ Hare not allowed to intersect vertices or edges of the nets. This property significantly narrows the set of supergroups to be included in the derivation of interpenetrating nets. A procedure is described based on the automorphism group of aHopf ring net[Alexandrovet al.(2012).Acta Cryst.A68, 484–493] to determine maximal symmetries compatible with interpenetration patterns. The proposed approach is illustrated by examples of twofold interpenetratedutp,diaandpcunets, as well as multiple copies of enantiomorphic quartz (qtz) networks. Some applications to polycatenated 2-periodic layers are also discussed.

Segmented Assimilation: Issues, Controversies, and Recent Research on the New Second Generation

1997 ◽  
Vol 31 (4) ◽  
pp. 975-1008 ◽  
Author(s):  
Min Zhou
Keyword(s):  
Empirical Research ◽  
Theoretical Approach ◽  
Second Generation ◽  
Theoretical Framework ◽  
The State ◽  
Assimilation Theory ◽  
Segmented Assimilation ◽  
Host Society ◽  
Future Studies

The segmented assimilation theory offers a theoretical framework for understanding the process by which the new second generation – the children of contemporary immigrants – becomes incorporated into the system of stratification in the host society and the different outcomes of this process. This article examines the issues and controversies surrounding the development of the segmented assimilation theory and reviews the state of recent empirical research relevant to this theoretical approach. It also highlights main conclusions from recent research that bear on this theory and their implications for future studies.

scholarly journals THE STRUCTURE AND MEANING OF KAWIH IN RONGGENG GUNUNG PERFORMANCE

PARADIGM ◽  
2019 ◽  
Vol 2 (2) ◽  
pp. 121
Author(s):  
Dian Nurrachman ◽  
Hasbi Assiddiqi ◽  
Rohanda Rohanda ◽  
Deden Hidayat
Keyword(s):  
Cultural Values ◽  
Theoretical Approach ◽  
Theoretical Framework ◽  
Unrequited Love ◽  
Performing Art

<p align="justify"><em>Ronggeng Gunung</em> is a combined performing art which thrives especially in southern Ciamis (including Pamarican and Banjarsari) and Pangandaran (including Padaherang and Kalipucang). Generally, this is almost the same as the conventional <em>ronggeng</em>, in which a dancer performs while being accompanied by <em>gamelan</em> (Javanese/Sundanese music instrument) and <em>kawih</em> (Sundanese songs). The main <em>ronggeng</em> dancer is a woman who wears a shawl as a part of the dance to invite males to dance with her. Allegedly, in its mythological narratives, <em>Ronggeng Gunung</em> was created from the grief of a princess who lost her beloved husband and her attempt of revenge toward the killer. This paper is actually intended to find out how are the structures and meanings of <em>Kawih</em> as an inseparable part of <em>Ronggeng Gunung</em> performance. This study applies structuralism as both theoretical approach and method, since it provides the theoretical framework to find out both the structural construction and the meaning of the <em>Kawih</em>. The result of this study shows that <em>kawih</em> accompanying <em>Ronggeng Gunung</em> performance represents a passionate romance of solace, unrequited love, as well as the cultural values of modesty, politeness, and the importance of solidarity in facing every problem encountered by human.  </p>

scholarly journals Synchronicity of social change and the construct of gender roles: Traditionalism and modernity as contents of mainstream model of female gender roles in women's magazines during the last quarter of 20

2002 ◽  
pp. 267-278
Author(s):  
Isidora Jaric
Keyword(s):  
Social Change ◽  
Gender Roles ◽  
Theoretical Approach ◽  
Female Gender ◽  
Theoretical Framework ◽  
Women's Magazines ◽  
Self Management ◽  
Research Model ◽  
Women's Magazine

The main intention of the research is to retrospectively decode changes in mainstream construct of female gender roles within the period of ''developed self-management socialism'' (1970s), period of structural crisis of socialism (1980s) and post-socialist period of Serbian/Yugoslav society. The mainstream construct of female gender roles will be reconstruct from Serbian women's magazine 'Bazar''. Through the basic presumptions of theoretical framework the research will try to conceptualize theoretical approach which will correspond with co called 'new communicative research model' which will be capable to incorporate contemporary changes within the process of communication among the emitter and recipients in order to better understand the content of the message.

scholarly journals Sustaining Cross-Sector Collaborations: Managing Conflicts in Large-Scale Urban Event Collaborations

2021 ◽  
Vol 45 (4) ◽  
pp. 439-460
Author(s):  
Anne Diallo ◽  
Margaret Reid
Keyword(s):  
Conflict Management ◽  
Theoretical Approach ◽  
Large Scale ◽  
Resource Dependence ◽  
Theoretical Framework ◽  
Goal Congruence ◽  
Shared Objective ◽  
Management Theories

Public-private collaborations can easily be disrupted when nascent conflicts are not addressed. These intersectoral conflicts may be associated with the resource exchanges necessary to achieve a shared objective, may be the result of goal divergence, or may involve both. This research utilizes a complementary theoretical approach to examine conflict management in two large-scale event collaborations, motorcycle rallies, that have been in operation for nineteen years. Framed by resource dependence, goal congruence, and conflict management theories the research examines the patterns of conflict and conflict management perceived by participants in these collaborations. The theoretical framework allowed us to address the complexities of aligning collaboration goals around the resource dependencies that lead to the formation of the collaborations. Our findings, which support quasi-formal conflict management, link this body of theories to the management of conflicts between collaborating organizations in a manner that, to our knowledge, has not been previously attempted.

Systematic prediction of new ferroelectrics in space group R3. II

2007 ◽  
Vol 63 (2) ◽  
pp. 257-269 ◽  
Author(s):  
S. C. Abrahams
Keyword(s):  
Inorganic Crystal Structure Database ◽  
Additional Structure ◽  
Stability Range ◽  
Acta Cryst ◽  
Space Group ◽  
Structure Database ◽  
Inorganic Crystal ◽  
Crystal Class ◽  
Thermal Stability Range ◽  
Crystal Structure Database

Release 2006/1 of the Inorganic Crystal Structure Database contains 155 entries under space group R3. Atomic coordinate analysis of the first 81 structures, with 52 different structure types, in Part I [Abrahams (2006). Acta Cryst. B62, 26–41] identified a total of 18 new types that satisfy the structural criteria for ferroelectricity, five that are more likely to have or undergo a transition to 3m symmetry, 19 more likely to be or undergo a transition to nonpolar symmetry and ten with a lower property predictability. Coordinate analysis of the remaining 71 entries with 54 different structure types in Part II leads to 11 materials including Al4B6O15, PbTa3(PO4)(P2O7)3.5, the KCd4Ga5S12 family, the LiZnPO4 family, Ca3Nb1.95O8V0.05 and Mn4Ta2O9 as new candidates which satisfy the structural criteria, together with the three known ferroelectrics Na3MoO3F3, Pb2ScTaO6, and RbTi2(PO4)3 at 6.2 GPa. Two additional ferroelectric predictions are at a lower level of confidence. The analysis also reveals nine materials, two of which are isostructural, that more likely belong or are capable of undergoing a transition to crystal class 3m. There are 14 additional structure types which are more likely to be nonpolar or undergo a transition to nonpolarity, ten have reduced predictive properties, with a further nine for which the space group is expected to remain R3 over the full thermal stability range. The increasing use of methods for identifying overlooked inversion centers in structural determinations may be extended by using coordinate analysis for detecting additional commonly overlooked symmetry elements.

A Theoretical Approach for Sustainable Communication in City Branding

2017 ◽  
pp. 41-66
Author(s):  
Ayşe Banu Bıçakçı ◽  
Zeynep Genel
Keyword(s):  
Cultural Studies ◽  
Theoretical Approach ◽  
Essential Role ◽  
Brand Image ◽  
Theoretical Framework ◽  
Brand Value ◽  
Communication Model ◽  
City Branding ◽  
Symmetrical Communication ◽  
The Impact

The key to success of cities having high brand-value and awareness is the configuration of successful brand structures for the participation of stakeholders into the process. Starting from this point, symmetric and sustainable communication among stakeholders is assumed to play an essential role as a prerequisite for achieving success. The key to ensuring sustainable practice of any discipline is the communication. In this regard, in infrastructure, renovation, finance, tourism, sociology and cultural studies, the symmetry and participation of all of the parties are also considered to be important in terms of communication. Alongside the theoretical framework of city branding, this chapter seeks to contribute to the literature with “Multilateral Symmetrical Communication Model,” which has been created to meet the requirements for city brands. The impact of stakeholders' interaction on the brand image, the impact of ensuring multilateral communication between both parts, and demonstrating applicability of these are the main focuses of this chapter.

Centrosymmetric or Noncentrosymmetric? Case Study, Generalization and Structural Redetermination of Sr5Nb5O17

1998 ◽  
Vol 54 (4) ◽  
pp. 399-416 ◽  
Author(s):  
S. C. Abrahams ◽  
H. W. Schmalle ◽  
T. Williams ◽  
A. Reller ◽  
F. Lichtenberg ◽  
...  
Keyword(s):  
Niobium Oxide ◽  
The Novel ◽  
Physical Measurement ◽  
X Ray Diffraction ◽  
Acta Cryst ◽  
Data Set ◽  
Space Group ◽  
X Ray ◽  
Atomic Coordinates

The possibility that the structure of the novel semiconducting perovskite-related material strontium niobium oxide, Sr5Nb5O17, refined by Schmalle et al. [Acta Cryst. (1995), C51, 1243–1246] in space group Pnn2, might instead belong to space group Pnnm has been investigated following an analysis of the atomic coordinates that indicated the latter space group to be more likely. All I obs were carefully remeasured, first those within a hemisphere containing c *, then all that lay within the full sphere of reflection. Refinement was undertaken, with each of two different sets of weights, in each space group. Each data set was used under three limiting intensity conditions: I obs > 4σ(I obs), I obs > 2σ(I obs) and finally with all reflections, but setting magnitudes with I obs ≤ 0 equal to 0. Fourteen separate tests based only upon the X-ray diffraction data may be used to distinguish between Pnn2 and Pnnm. Nine tests favored the latter choice, four were indeterminate and one was not used. Seven further tests may be made on the basis of physical measurement; of these, three strongly indicated Pnnm, one was indeterminate and three could not be used. The evidence clearly suggests the space group is Pnnm. The use of all reflections, including those with negative magnitude set equal to zero, is essential to avoid ambiguity in the X-ray diffraction tests and achieve the highest reliability. Refinement with weights based on variances of Type A and Type B [Schwarzenbach et al. (1995). Acta Cryst. A51, 565–569] resulted in improved reliability compared with that obtained from a popular empirical weighting scheme. The revised structure differs in several respects from that published previously.

scholarly journals P1 or P\bar 1? Corrigendum

2000 ◽  
Vol 56 (4) ◽  
pp. 744-744 ◽  
Author(s):  
Richard E. Marsh
Keyword(s):  
Nauk Sssr ◽  
Monoclinic Space Group ◽  
Orthorhombic Space Group ◽  
Acta Cryst ◽  
Triclinic Space Group ◽  
Space Group ◽  
Akad Nauk Sssr

The structure of bis((phenyl-O,N,N-azoxy)oxy)methane, C_{13}H_{12}N_4O_4, originally reported as triclinic, space group P1 [Zyuzin et al. (1997). Isz. Akad. Nauk SSSR Ser. Khim. pp. 1486–1492; CSD refcode NIXQAM] was recently revised to monoclinic, space group C2 [Marsh (1999). Acta Cryst. B55, 931–936]. It is properly described as orthorhombic, space group Fdd2.

Exploring an Institutionalist and Post-Desert Theoretical Approach to Multiple-Offense Sentencing

2017 ◽  
Author(s):  
Anthony Bottoms
Keyword(s):  
Empirical Research ◽  
Theoretical Approach ◽  
Theoretical Framework ◽  
The Way

This chapter begins with a discussion of Neil MacCormick’s institutionalist approach to legal phenomena, and argues that this theoretical framework has value as a way to study multiple offense sentencing (MOS). The most thorough completed empirical research into MOS, by Austin Lovegrove in Victoria, Australia, is then considered, alongside the leading Victorian case of Azzopardi v. R. Congruently with the expectations of institutionalism, this analysis uncovers several separate normative principles used by judges in MOS practice. These results are discussed through the lens of what can be described as “post-desert theory.” Overall, the analyses in the chapter are intended to pave the way for the development of a more coherent answer to the question: “what principles should optimally guide sentencers when dealing with cases involving multiple offenses?”

scholarly journals The problem of theodicy and the theology of the cross

2007 ◽  
Vol 41 (2) ◽  
Author(s):  
N. Vorster
Keyword(s):  
Theoretical Approach ◽  
Theoretical Framework ◽  
Human Experience ◽  
Theology Of The Cross ◽  
Theoretical Argument ◽  
The World ◽  
Christian Understanding ◽  
The Cross ◽  
Point Of Departure ◽  
The Way

Theodicy is the attempt to justify God’s righteousness and goodness amidst the experience of evil and suffering in the world. This article discusses Karl Barth’s Christological and Jürgen Moltmann’s eschatological approach to the problem of theodicy. The central theoretical argument is that the problem of theodicy poses a major hermeneutical challenge to Christianity that needs to be addressed, since it has implications for the way in which theology defines itself. Questions that arise are: What are the boundaries of theology? What are the grounds on which the question of theodicy must be asked? Is the Christian understanding of God’s omnipotence truly Scriptural? The modern formulation of theodicy finds its origin in the Enlighten- ment that approaches the problem from a theoretical framework based on human experience. This theoretical approach leads, however, to further logical inconsistencies. Theology must rather approach the problem in the same way as Scripture does, by taking the cross, resurrection and parousia of Christ as point of departure. The cross and resurrection are a sign that suffering is not part of God’s plan and at the same time an affirmation of God’s victory over suffering and evil.

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