Are Stable Demands Vectors in the Core of Two-Sided Markets? Some Graph-Theoretical Considerations

1997 ◽  
pp. 270-278
Author(s):  
Benny Moldovanu
Keyword(s):  
The Core ◽  
Theoretical Considerations ◽  
Two Sided Markets

To daydream is to imagine events: Conceptual, empirical, and theoretical considerations

2018 ◽  
Vol 28 (2) ◽  
pp. 261-268 ◽  
Author(s):  
Ian R. Newby-Clark ◽  
Kajalaxy Thavendran
Keyword(s):  
Mind Wandering ◽  
The Core ◽  
Theoretical Position ◽  
Theoretical Considerations

We propose defining daydreaming as “imagining events.” In support, we give a brief account of past daydreaming research and the various definitions of daydreaming, whether stated or implied, in those works. We argue that this variation in definition, and in particular the equating of daydreaming with mind-wandering, is problematic. Our definition represents the core of the concept, resists conflation with mind-wandering and, of scientific benefit, does not entail a strong theoretical position.

scholarly journals What is ‘space’ for dress? Theoretical considerations of a spatial turn for fashion studies

2021 ◽  
Vol 8 (1) ◽  
pp. 7-23
Author(s):  
Anna-Mari Almila
Keyword(s):  
Social Sciences ◽  
Life Cycle ◽  
Spatial Analysis ◽  
Spatial Turn ◽  
The Core ◽  
Fashion Studies ◽  
Spatial Practice ◽  
Human And Social Sciences ◽  
Whole Life Cycle ◽  
Theoretical Considerations

This article seeks to contribute to the increasing body of fashion scholarship focused on space. Along with a spatial turn in human and social sciences, it is increasingly recognized by fashion researchers that spaces and places of fashion matter – but it is less discussed how a theoretical framework could be created to explore these. Thus, a Lefebvrian spatial analysis is considered here. The approach suggested recognizes that dress is fundamentally political, as is the space which it inhabits. Dressed bodies are subject to hegemonic ideologies, but individuals have the power to resist these, too. Some parameters of a spatialized fashion sociology and what benefits such an approach can bring for fashion scholarship more generally are considered. Dress should be understood as spatial practice, which in its turn creates spaces and realities, too. Such a framing allows for analysis of various spaces dressed bodies move through, and of how garments operate in these. Furthermore, it allows for extending the analysis by following garments through their whole life cycle, exploring the different kinds of spaces they enter. Such an approach has the potential for overcoming some persistent biases inherent in fashion scholarship, which tends to focus more on the ‘core’ than the ‘periphery’ locations of fashion.

scholarly journals Stability and Bayesian Consistency in Two-Sided Markets

2020 ◽  
Vol 110 (8) ◽  
pp. 2625-2666 ◽  
Author(s):  
Qingmin Liu
Keyword(s):  
Information Asymmetry ◽  
Rational Expectations ◽  
Competitive Equilibrium ◽  
Pairwise Stability ◽  
Prior Beliefs ◽  
Central Idea ◽  
The Core ◽  
Role Of Information ◽  
Two Sided Markets

We propose a criterion of stability for two-sided markets with asymmetric information. A central idea is to formulate off-path beliefs conditional on counterfactual pairwise deviations and on-path beliefs in the absence of such deviations. A matching-belief configuration is stable if the matching is individually rational with respect to the system of on-path beliefs and is not blocked with respect to the system of off-path beliefs. The formulation provides a language for assessing matching outcomes with respect to their supporting beliefs and opens the door to further belief-based refinements. The main refinement analyzed in the paper requires the Bayesian consistency of on-path and off-path beliefs with prior beliefs. We define concepts of Bayesian efficiency, the rational expectations competitive equilibrium, and the core. Their contrast with pairwise stability manifests the role of information asymmetry in matching formation. (JEL C78, D40, D82, D83)

scholarly journals Attenuation of seismic waves in the earth's mantle

1958 ◽  
Vol 48 (3) ◽  
pp. 269-282 ◽  
Author(s):  
B. Gutenberg
Keyword(s):  
Absorption Coefficient ◽  
Elastic Waves ◽  
Laboratory Experiments ◽  
Seismic Waves ◽  
Body Waves ◽  
The Core ◽  
Earth’S Mantle ◽  
The Earth ◽  
Theoretical Considerations

Abstract Contrasting with conclusions from laboratory experiments that the absorption coefficient k for amplitudes of elastic waves is proportional to 1/T, or, from theoretical considerations, that it should be proportional to 1/T or to 1/T2, observations of body waves through the mantle of the earth show little if any decrease in absorption with increasing period T. In teleseismic records S rarely shows periods of less than 4 seconds, while in P periods of 1 second are observed to the greatest distances. The value k = 0.06 per 1,000 km., found previously for P, P′P′ and P′P′P′ through the mantle and the core, is confirmed for P and PP and is found also for S in the mantle.

Psychology's Theory Crisis, and Why Formal Modelling Cannot Solve It

2021 ◽  
Author(s):  
Freek Oude Maatman
Keyword(s):  
Psychological Theory ◽  
Current Theory ◽  
Formal Modelling ◽  
Explanatory Framework ◽  
The Core ◽  
Research Findings ◽  
Theoretical Considerations ◽  
Core Problem ◽  
Do So

In light of psychology’s ‘theory crisis’, multiple authors have recently argued that adopting the formalization of theories and/or formal modelling is a necessary or useful step towards stronger psychological theory. In this article, I instead argue that formal modelling cannot solve the core problem the psychological ‘theory crisis’ refers to, which are the currently high degrees of contrastive and holistic underdetermination of our theories by our data. I do so by first introducing underdetermination as an explanatory framework for determining the evidential import of research findings for theories, and showing how both broader theoretical considerations and informal assumptions are key to this process. Then, I derive the aforementioned core problem from current theory crisis literature and tentatively explore its possible solutions. Lastly, I show that formal modelling is neither a necessary nor sufficient solution for either contrastive or holistic underdetermination, and that its uncritical adoption might instead worsen the crisis.

Mechanisms of decay of laminar and turbulent vortices

1979 ◽  
Vol 90 (2) ◽  
pp. 241-255 ◽  
Author(s):  
Mahinder S. Uberoi
Keyword(s):  
Angular Momentum ◽  
Vortex Core ◽  
Axial Velocity ◽  
Velocity Difference ◽  
Dominant Mechanism ◽  
One Dimensional ◽  
The Core ◽  
Trailing Vortices ◽  
Radial Convection ◽  
Theoretical Considerations

The dynamics of an infinitely long one-dimensional vortex and a swirl are compared with the dynamics of a semi-infinitely long trailing vortex and trailing swirl. With increasing distance, the change in the axial velocity difference between the core of the trailing vortex and the surrounding region causes radial convection and some associated axial convection of angular momentum. In laminar or turbulent trailing vortices, we show that under most conditions of interest this is the dominant mechanism for the decrease in the velocities of swirl in the core and corresponding growth of the core. On the basis of theoretical considerations and experimental observations, we show that the axial velocity difference between the core of the trailing vortex and the surrounding region is necessary for the sustenance of turbulence in the vortex core. A theory of the turbulent trailing vortex is developed on the basis of these mechanisms and the results are compared with our experimental observations.

The Analysis of Competition in Banking: Theory and Empirics

2016 ◽  
Author(s):  
Xavier Vives
Keyword(s):  
Industrial Organization ◽  
Asymmetric Information ◽  
Market Structure ◽  
Product Differentiation ◽  
Banking Sector ◽  
Network Externalities ◽  
Core Analysis ◽  
Behavioral Biases ◽  
The Core ◽  
Two Sided Markets

This chapter presents the core analysis of competition in the banking sector based on the industrial organization (IO) approach. It examines both theoretical and empirical aspects as well as at the special problems in analyzing the sector. This includes studying pricing, product differentiation, frictions, network externalities and two-sided markets, market structure, and mergers. The validity of the Structure–Conduct–Performance paradigm for banking is tested and the contributions of the new empirical IO is explained. The effects of asymmetric information and deregulation are also discussed. The chapter concludes with an assessment of behavioral biases of consumers and investors, along with their effects on the strategies of banks, competition, and welfare.

scholarly journals Specyfika relacji w ramach leasingu pracowniczego w strukturze grupy kapitałowej

2015 ◽  
Author(s):  
Dominika Bąk-Grabowska
Keyword(s):  
Knowledge Transfer ◽  
Human Resources ◽  
Labour Market ◽  
Group Structure ◽  
Human Resources Management ◽  
Resources Management ◽  
The Core ◽  
A Company ◽  
Theoretical Considerations

In the paper an employee leasing has been shown in the light of chosen labour market theories and management conceptions. The conducted analysis indicated that an employee leasing – as an institution of Labour Market Intermediaries (LMIs) – is presented as a nonstandard form of employment which is connected with a little attractive work and with low standards of human resources management. The analyzed case study of employee leasing usage in the capital group structure does not enter the mainstream of theoretical considerations. A company which leases employees uses nonstandard forms of employment to all employees (also in the sphere of stabilization and the core of employment) and the used tools of human resources management are highly professional. The specifics of the analyzed solution are connected with the phenomenon of knowledge transfer and isomorphism in capital group structure.

A Solution Concept Related to “Bounded Rationality” for some Two-Echelon Models

2019 ◽  
Vol 21 (01) ◽  
pp. 1940005
Author(s):  
Joaquin Sanchez-Soriano ◽  
Natividad Llorca
Keyword(s):  
Supply Chain ◽  
Bounded Rationality ◽  
Cooperative Games ◽  
Solution Concept ◽  
Theoretical Concept ◽  
Solution Concepts ◽  
Transportation Problems ◽  
The Core ◽  
Core Catcher ◽  
Two Sided Markets

Two-echelon models describe situations in which there are two differentiated groups of agents. Some examples of these models can be found in supply chain problems, transportation problems or two-sided markets. In this paper, we deal with two-sided transportation problems which can be used to describe a wide variety of logistic and market problems. We approach the problem from the perspective of cooperative games and study some solution concepts closely related to the game theoretical concept of core, but rather than focus specifically on the core of a transportation game, we introduce and study a new solution concept, a core catcher, which can be motivated by a kind of bounded rationality which can arise in these cooperative contexts.

What face familiarity feelings say about the lateralization of specific entities within the core system

2019 ◽  
Vol 42 ◽  
Author(s):  
Guido Gainotti
Keyword(s):  
Temporal Lobe ◽  
Memory System ◽  
Core System ◽  
The Core ◽  
Memory Traces ◽  
Specific Memory ◽  
Target Article ◽  
Temporal Structures ◽  
The Right

Abstract The target article carefully describes the memory system, centered on the temporal lobe that builds specific memory traces. It does not, however, mention the laterality effects that exist within this system. This commentary briefly surveys evidence showing that clear asymmetries exist within the temporal lobe structures subserving the core system and that the right temporal structures mainly underpin face familiarity feelings.

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