On the role of frame-based knowledge in lexical representation

2003 ◽  
Vol 26 (6) ◽  
pp. 667-668
Author(s):  
József Andor
Keyword(s):  
Theoretical Model ◽  
Lexical Semantics ◽  
Lexical Representation ◽  
Conceptual Semantics ◽  
Types Of Knowledge ◽  
Conceptual Structures

In this commentary I discuss the role of types of knowledge and conceptual structures in lexical representation, revealing the explanatory potential of frame-based knowledge. Although frame-based lexical semantics is not alien to the theoretical model outlined in Jackendoff's conceptual semantics, testing its relevance to the analysis of the lexical evidence presented in his book has been left out of consideration.

Transition Times in Memory

2018 ◽  
Author(s):  
Donatella della Porta ◽  
Massimiliano Andretta ◽  
Tiago Fernandes ◽  
Eduardo Romanos ◽  
Markos Vogiatzoglou
Keyword(s):  
Theoretical Model ◽  
Social Movement ◽  
Transition Period ◽  
Two Dimensions ◽  
Democratic Regime ◽  
Organizational Models ◽  
Different Types ◽  
Transition Times ◽  
Movement Participation

The second chapter covers the main characteristics of transition time in the four countries: Italy, Greece, Spain, and Portugal. After developing the theoretical model on paths of transition, with a focus on social movement participation, the chapter looks at social movements and protest events as turning points during transition, covering in particular the specific movement actors, their organizational models, and their repertoires of action and frames. The chapter focuses on two dimensions: the role of mobilization in the transition period, which implies the analysis of how elites and masses interact, ally, or fight with each other in the process, and the outcome of transitions as continuity versus rupture of the democratic regime vis-à-vis the old one. It concludes by elaborating some hypotheses on how different modes of transition may produce different types and uses of (transition) memories.

scholarly journals Triggering avalanches by transverse perturbations in a rotating drum

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Vicente Salinas ◽  
Cristóbal Quiñinao ◽  
Sebastián González ◽  
Gustavo Castillo
Keyword(s):  
Hopf Bifurcation ◽  
Theoretical Model ◽  
Order Parameter ◽  
Small Scale ◽  
Rotating Drum ◽  
Governing Parameter ◽  
Stick Slip ◽  
Slip Regime ◽  
Axis Of Rotation

AbstractWe study the role of small-scale perturbations in the onset of avalanches in a rotating drum in the stick-slip regime. By vibrating the system along the axis of rotation with an amplitude orders of magnitude smaller than the particles’ diameter, we found that the order parameter that properly describes the system is the kinetic energy. We also show that, for high enough frequencies, the onset of the avalanche is determined by the amplitude of the oscillation, contrary to previous studies that showed that either acceleration or velocity was the governing parameter. Finally, we present a theoretical model that explains the transition between the continuous and discrete avalanche regimes as a supercritical Hopf bifurcation.

The Internationalization of Family Firms

2013 ◽  
Vol 27 (2) ◽  
pp. 103-125 ◽  
Author(s):  
Thilo J. Pukall ◽  
Andrea Calabrò
Keyword(s):  
Theoretical Model ◽  
Family Firms ◽  
Future Research ◽  
Risk Attitudes ◽  
Journal Articles ◽  
Suggested Model ◽  
Socioemotional Wealth ◽  
Uppsala Model ◽  
Research Themes

This article systematically reviews and critically examines 72 journal articles published (from 1980 to 2012) on the internationalization of family firms. Stemming from existing literature, core aspects and main gaps are identified. We aim to overcome the inconclusiveness of findings of previous research by offering an integrative theoretical model integrating the concept of socioemotional wealth with the revised Uppsala model. Our framework helps understand behaviors of internationalizing family firms by focusing on when and how they internationalize, especially related to risk attitudes, the role of knowledge and networks. Ultimately, we provide future research themes flowing from our suggested model.

Gli standard privati di sicurezza alimentare: un modello di teoria dei contratti per l'analisi degli aspetti organizzativi e promozionali

2012 ◽  
pp. 85-105
Author(s):  
Antonella Di Fonzo ◽  
Maria Angela Perito ◽  
Carlo Russo
Keyword(s):  
Theoretical Model ◽  
Food Safety ◽  
Product Differentiation ◽  
Diversification Strategy ◽  
Private Standards ◽  
Food Distributors ◽  
Definition Of ◽  
Large Distribution ◽  
Current Behavior

In recent years, large food distributors poured considerable effort in the definition of private standards of food safety for their products. Despite these efforts, medium and large retailers have yet to begin advertising to their consumers the adoption of such standards and, in doing so, do not actively pursue a diversification strategy for their products. This behavior seems paradoxical as large retailers would benefit from product differentiation. This article focuses on the role of standards in the coordination of the supply channels and proposes a theoretical model that gives an economic motivation to the current behavior of large retailers. The first objective of this study is to demonstrate how the adoption of standards is a rational choice for large retailers, even in the case in which consumers are not willing to pay for food safety. The reason is that standards can also be used to solve information asymmetry problems and organize the supply chain. Secondly, the theoretical model of contracts suggests that, investments related to the promotion of standards to the consumers, might, under certain conditions, undermine the profits of the large distribution.

DISCUSSION

2001 ◽  
Vol 23 (2) ◽  
pp. 305-313 ◽  
Author(s):  
Alan Juffs
Keyword(s):  
Second Language ◽  
Lexical Representation ◽  
Special Issue ◽  
Complete Understanding ◽  
Key Points ◽  
Language Knowledge ◽  
Full Picture ◽  
Crosslinguistic Variation

In this article I discuss some key points that are raised in the papers in this special issue. The first issue is that a variety of theoretical tools are necessary for a complete understanding of the issues raised in these papers. Second, although the methodology that is used in studies of second language knowledge has improved, it is clear we still lack an agreed-on set of protocols that will permit reliable comparisons across studies. In spite of these challenges, we are making progress in using complementary theories of the role of lexical representation, predication, and crosslinguistic variation to get a full picture of this complex area of lexico-morphosyntactic knowledge.

scholarly journals Role of KCa3.1 Channels in Modulating Ca2+ Oscillations during Glioblastoma Cell Migration and Invasion

2018 ◽  
Vol 19 (10) ◽  
pp. 2970 ◽  
Author(s):  
Luigi Catacuzzeno ◽  
Fabio Franciolini
Keyword(s):  
Cell Migration ◽  
Theoretical Model ◽  
Migration And Invasion ◽  
Channel Activity ◽  
Cell Migration And Invasion ◽  
Channel Modulation ◽  
Invasion Mechanisms ◽  
Migratory Cycle ◽  
Channel Dependent

Cell migration and invasion in glioblastoma (GBM), the most lethal form of primary brain tumors, are critically dependent on Ca2+ signaling. Increases of [Ca2+]i in GBM cells often result from Ca2+ release from the endoplasmic reticulum (ER), promoted by a variety of agents present in the tumor microenvironment and able to activate the phospholipase C/inositol 1,4,5-trisphosphate PLC/IP3 pathway. The Ca2+ signaling is further strengthened by the Ca2+ influx from the extracellular space through Ca2+ release-activated Ca2+ (CRAC) currents sustained by Orai/STIM channels, meant to replenish the partially depleted ER. Notably, the elevated cytosolic [Ca2+]i activates the intermediate conductance Ca2+-activated K (KCa3.1) channels highly expressed in the plasma membrane of GBM cells, and the resulting K+ efflux hyperpolarizes the cell membrane. This translates to an enhancement of Ca2+ entry through Orai/STIM channels as a result of the increased electromotive (driving) force on Ca2+ influx, ending with the establishment of a recurrent cycle reinforcing the Ca2+ signal. Ca2+ signaling in migrating GBM cells often emerges in the form of intracellular Ca2+ oscillations, instrumental to promote key processes in the migratory cycle. This has suggested that KCa3.1 channels may promote GBM cell migration by inducing or modulating the shape of Ca2+ oscillations. In accordance, we recently built a theoretical model of Ca2+ oscillations incorporating the KCa3.1 channel-dependent dynamics of the membrane potential, and found that the KCa3.1 channel activity could significantly affect the IP3 driven Ca2+ oscillations. Here we review our new theoretical model of Ca2+ oscillations in GBM, upgraded in the light of better knowledge of the KCa3.1 channel kinetics and Ca2+ sensitivity, the dynamics of the Orai/STIM channel modulation, the migration and invasion mechanisms of GBM cells, and their regulation by Ca2+ signals.

The Role of Theory

2014 ◽  
Author(s):  
Richard Swedberg
Keyword(s):  
Social Science ◽  
Social Theory ◽  
Types Of Knowledge ◽  
History Of ◽  
The Way

This chapter looks at the role of theory in theorizing. Knowing theory, in order to be good at theorizing in social science, is not the same as having a knowledge of the history of social theory. It is true that it is helpful to have some of the skills of an intellectual historian when one tries to figure out what a concept means, why a theory looks the way it does today, and similar issues. However, this is not the kind of knowledge that one basically needs to have in order to be good at theorizing. The two types of knowledge that are needed in order to theorize well are knowledge of the basics of social theory and knowledge of a number of concepts, mechanisms, and theories.

THEORETICAL DEFINITIONS FOR AUXILIARY CONCEPTS OF VARIOUS LEVELS OF ABSTRACTION

2020 ◽  
pp. 28-31
Author(s):  
Valentin Karpovich
Keyword(s):  
Theoretical Model ◽  
Subject Area ◽  
Theoretical Concept ◽  
Theoretical Knowledge ◽  
Practical Application ◽  
Levels Of Abstraction ◽  
Theoretical Concepts ◽  
The Subject ◽  
Logical Constraints

Theoretical knowledge may contain various levels of abstraction represented by logical constructions from the observed characteristics of objects from the subject area of the theory. The degree of abstractness can be de-scribed by the complexity of the structures obtained from the initial observational terms. Such auxiliary construc-tions are characterized as explicit or implicitdefinitions of theoretical concepts in terms of observational. One of the techniques for constructing such definitions is the operationalization of abstractions by a system of reduction sentences. In this case a theoretical concept is characterized as “open” and plays a role of logical and methodo-logical constraints for expanding the possible connections of the theoretical model with the help of concepts from the domain of intended practical application.

How does information integration enhance SMEs’ credit quality: the mediating role of supply chain capabilities

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Yaqin Yuan ◽  
Linlin Liu ◽  
Liu Liu
Keyword(s):  
Information Technology ◽  
Supply Chain ◽  
Theoretical Model ◽  
Information Sharing ◽  
Information Integration ◽  
Theoretical Research ◽  
Equation Modeling ◽  
Content Type ◽  
Credit Quality

PurposeThis paper aims to investigate the relationship between information integration, supply chain capabilities and credit quality of small and middle enterprises (SMEs) in supply chain finance (SCF).Design/methodology/approachGrounded in the resource-based view (RBV) and signaling theory, this study proposes a theoretical model. Then, structural equation modeling and interview analysis are employed to test the theoretical model.FindingsThe results show that both two aspects of information integration, namely, information technology and information sharing, have positive effects on the SMEs’ credit quality in SCF, and these effects are mediated by supply chain capabilities.Originality/valueFirst, the paper contributes to SCF literature by simultaneously examining the role of two dimensions of information integration (information technology and information sharing) in enhancing SMEs’ credit quality. Second, this paper enriches the existing theoretical research on SCF by integrating the SMEs perspective and SCF service provider perspective. Moreover, this paper explores the indirect effects of information integration on SMEs’ credit quality by incorporating supply chain capabilities as a mediating factor.

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