scholarly journals The bias of avoiding spatial dynamic panel models

REGION ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 153-180
Author(s):  
Lorenz Benedikt Fischer
Keyword(s):  
Dynamic Models ◽  
Regional Economics ◽  
Empirical Work ◽  
Optimal Estimation ◽  
Spatial Dimension ◽  
The Other ◽  
Omitted Variables ◽  
Time Dimension ◽  
Opposite Case ◽  
Dynamic Panel Models

Many questions in urban and regional economics can be characterized as including both a spatial and a time dimension. However, often one of these dimensions is neglected in empirical work. This paper highlights the danger of methodological inertia, investigating the effect of neglecting the spatial or the time dimension when in fact both are important. A tale of two research teams, one living in a purely dynamic and the other in a purely spatial world of thinking, sets the scene. Because the researcher teams' choices to omit a dimension change the assumed optimal estimation strategies, the issue is more difficult to analyze than a typical omitted variables problem. First, the bias of omitting a relevant dimension is approximated analytically. Second, Monte Carlo simulations show that the neglected dimension projects onto the other, with potentially disastrous results. Interestingly, dynamic models are bound to overestimate autoregressive behavior whenever the spatial dimension is important. The same holds true for the opposite case. An application using the well-known, openly available cigarette demand data supports these findings.

scholarly journals The Pice Effects of Competition from Parallel Imports and Therapeutic Alternatives: Using Dynamic Models to Estimate the Causal Effect on the Extensive and Intensive Margins

2021 ◽  
Author(s):  
David Granlund
Keyword(s):  
Dynamic Models ◽  
Causal Effect ◽  
The Other ◽  
Causal Effects ◽  
Parallel Imports ◽  
Extensive And Intensive Margins ◽  
Price Effects ◽  
Short And Long Term ◽  
Therapeutic Alternatives

AbstractThis paper studies responses to competition with the use of dynamic models that distinguish between short- and long-term price effects. The dynamic models also allow lagged numbers of competitors to become valid and strong instruments for the current numbers, which enables studying the causal effects using flexible specifications. A first parallel trader is found to decrease prices of exchangeable products by 7% in the long term. On the other hand, prices do not respond to the first competitor that sells therapeutic alternatives; but competition from four or more competitors that sell on-patent therapeutic alternatives decreases prices by about 10% in the long term.

scholarly journals On the Support that the Special and General Theories of Relativity Provide for Rock’s Argument Concerning Induced Self-Motion and Vice Versa

2020 ◽  
Author(s):  
Douglas Michael Snyder
Keyword(s):  
Reference Frame ◽  
Empirical Work ◽  
Special Theory ◽  
The Other ◽  
Relativity Theory ◽  
Inertial Reference Frame ◽  
Theory Of Relativity ◽  
Special Theory Of Relativity ◽  
Other Hand ◽  
Self Motion

Though Einstein and other physicists recognized the importance of an observer being at rest in an inertial reference frame for the special theory of relativity, the supporting psychological structures were not discussed much by physicists. On the other hand, Rock wrote of the factors involved in the perception of motion, including one’s own motion. Rock thus came to discuss issues of significance to relativity theory, apparently without any significant understanding of how his theory might be related to relativity theory. In this paper, connections between Rock’s theory on the perception of one’s own motion, as well as empirical work supporting it, and relativity theory are explored. Paper available at: https://arxiv.org/abs/physics/9908025v1 .

scholarly journals Albanian Aorist and Time Reference Points

2020 ◽  
Vol 10 (3) ◽  
pp. 115
Author(s):  
Muhamet Reçica ◽  
Naser Pajaziti
Keyword(s):  
Reference Point ◽  
Reference Points ◽  
The Other ◽  
Temporal Relations ◽  
Time Dimension ◽  
Relative Time ◽  
Absolute Time ◽  
Temporal System ◽  
The Absolute

Topics related to the structure of the temporal system of Albanian language always give opportunities for new discussions to deal with certain aspects related to various forms of this system, and one of them is the aorist, as a tense containing many semantic, temporal, aspectual, stylistic values, etc. The relationships that exist between the verbal tenses in this system within the absolute time-relative time dimension, which relate to the independent or dependent use of temporal forms against one another in different discoursing contexts, make up an interpretation-based approach to interest. Hence, the essential objective of this paper will be specifically the relations of the Albanian aorist to the other verbal forms, always observed with a time reference point, to illuminate the character of these purely temporal relations against each other under all circumstances of the actions that take place and are displayed by verbal forms in different contexts, relying on the corpus of examined materials.

scholarly journals Fellow Traveller Versus Moral Stranger: How Overall Views of Offenders Impact on Punishment and Rehabilitation Decisions

2021 ◽  
Author(s):  
◽  
Stephanie Fisher
Keyword(s):  
Structural Equation ◽  
Empirical Work ◽  
The Other ◽  
Theoretical Concepts ◽  
Fellow Traveller ◽  
The Media ◽  
Empirical Context ◽  
Objective View ◽  
Moral Stranger ◽  
The Way

<p>Theoretical discussions have proposed that opinions relating to offenders can be viewed along a continuum, with the moral stranger at one end and the fellow traveller at the other (Connolly & Ward, 2008). At the very basic level the moral stranger is the offender who is a bad person, while the fellow traveller is the offender who has done a bad thing. It is proposed that where an individual’s view of offenders sits on the continuum will help determine punishment and rehabilitation decisions that they make about offenders. It is further proposed that these views are influenced by outside factors such as the way that the media portrays offenders. The media is an important source of information on crime and offenders (Gilliam & Iyengar, 2000; Klite, Bardwell, & Salzman, 1997), and so the way that the media write about offenders can influence the public’s opinions about offenders. The moral stranger and the fellow traveller are theoretical concepts at present, so the aim of the current research was to investigate these concepts in an empirical context. Firstly, Studies 1 and 2 presented crime vignettes written from either the moral stranger perspective or the fellow traveller perspective and then investigated what punishment and rehabilitation differences there were. Study 3 then developed a measure to evaluate individuals’ opinions about offenders, to create an empirical basis for the existing theory. The Opinions about Criminal Offenders (OCO) Scale was developed in Study 3. Study 4 then tested the psychometric properties of this Scale, and through further factor analysis the scale was pared down to 12-items made up of four subscales. Study 5 then brought together the empirical work from Studies 1 and 2 and the developed measure from Studies 3 and 4. Participants were presented with two vignettes, one written from a subjective view and the other from an objective view. They were also given the 12-item OCO Scale. Structural Equation Modelling was then used to extend the work of Studies 1 and 2, and to further develop the decision making process individuals go through. Results indicated that each subscale of the OCO predicted different judgements made about the offender, in terms of his characteristics and likelihood of reoffending, and that these judgements then predicted different judgements about the outcome of the offence, including punishment motive. These studies, together, show that the moral stranger and fellow traveller concepts do exist, as a continuum, and the development of the OCO Scale showed that there is utility in the scale in terms of the type of judgements made about an offender and an offence. The current study was conducted with a sex offence in the vignettes and so further research needs to extend this by using different offence types and different offender characteristics, to investigate how generalisable these findings are.</p>

scholarly journals A Double Sky-Hook Algorithm for Improving Road-Holding Property in Semi-Active Suspension Systems for Application to In-Wheel Motor

2021 ◽  
Vol 11 (19) ◽  
pp. 8912
Author(s):  
Seunghoon Woo ◽  
Donghoon Shin
Keyword(s):  
Computer Simulations ◽  
Dynamic Models ◽  
Active Suspension ◽  
The Other ◽  
Driving Mode ◽  
The Road ◽  
Suspension Systems ◽  
Active Suspension Systems ◽  
Main Disadvantage ◽  
Advanced Development

This paper presents a double sky-hook algorithm for controlling semi-active suspension systems in order to improve road-holding property for application in an in-wheel motor. The main disadvantage of the in-wheel motor is the increase in unsprung masses, which increases after shaking of the wheel, so it has poor road-holding that the conventional theoretical sky-hook algorithm cannot achieve. The double sky-hook algorithm uses a combination of damper coefficients, one from the chassis motion and the other from the wheel motion. Computer simulations using a quarter and full car dynamic models with the road conditions specified by ISO2631 showed the effectiveness of the algorithm. It was observed that the algorithm was the most effective in the vicinity of the wheel hop frequency. This paper also proposed the parameter set of the double sky-hook algorithm to differentiate the driving mode of vehicles under advanced development.

For a renewal of the situation concept: The situation of home online shopping

2018 ◽  
Vol 33 (4) ◽  
pp. 24-45 ◽  
Author(s):  
Aurélia Michaud-Trévinal ◽  
Thomas Stenger
Keyword(s):  
Online Shopping ◽  
Video Recording ◽  
Spatial Dimension ◽  
Spatial Mobility ◽  
Time Dimension ◽  
Process Flow ◽  
The Real ◽  
Home Shopping ◽  
Theoretical Approaches ◽  
Channel Strategy

Twenty years after the pioneering article devoted to interactive home shopping by Alba et al., this research intends to study the situation of home online shopping (SHOS). An observation is carried out using video recording to examine the real practices that occur behind the screen. Two theoretical approaches are distinguished (classic and participatory). A new conceptualization of the situation is proposed that rests on three factors: the participants, spatial dimension, and time dimension. An analysis of the results highlights a main participant who interacts with other participants and business websites in addition to their spatial mobility and the materiality of the situation with its discontinuous characteristic. The fragmentation of the SHOS is emphasized. In addition to a new conceptualization of the situation, this research aims to relativize the online immersion process (flow) and to integrate the SHOS into a real omni-channel strategy.

Born idolaters: The limits of the philosophical implications of the cognitive science of religion

2015 ◽  
Vol 57 (2) ◽  
Author(s):  
Jonathan Jong ◽  
Christopher Kavanagh ◽  
Aku Visala
Keyword(s):  
Cognitive Science ◽  
Religious Belief ◽  
Empirical Work ◽  
The Other ◽  
Human Beings ◽  
Cognitive Science Of Religion ◽  
Philosophical Work ◽  
Cognitive Constraints ◽  
Science Of Religion ◽  
Work Done

SummaryIn recent years, theoretical and empirical work done under the rubric of the cognitive science of religion (CSR) have led many to conclude that religion (or, at least, some aspects thereof) is “natural”. By this, it is meant that human beings are predisposed to believe in supernatural agents, and that their beliefs about these agents are constrained in various ways. The details about how and why these predispositions and cognitive constraints developed and evolved are still largely unknown, though there is enough of a theoretical consensus in CSR for philosophers to have begun reflecting on the implications of CSR for religious belief. In particular, much philosophical work has been done on the implications of CSR for theism, on both sides of the debate. On one hand, CSR might contribute to defeating particular arguments for theism, or indeed theism altogether; on the other hand, CSR might provide support for specific theological views. In this paper, we argue that the CSR is largely irrelevant for

Faustus. The mythical memory

2020 ◽  
Vol 65 (2) ◽  
pp. 71-89
Author(s):  
Józsa István
Keyword(s):  
Cultural Heritage ◽  
German Literature ◽  
The Other ◽  
Raw Material ◽  
Time Dimension ◽  
The Past ◽  
Other Hand ◽  
Preliminary Work ◽  
Literary Heritage

The figure and story of Faustus is part of the European cultural heritage, and as it usually, even inevitably happens with legends, it lives further in the adaptations of later periods and authors . It is mainly linked to Goethe’s name, his figure became well known and immortal in his works. Ever since Goethe, all authors – who respect themselves – in German literature must write a new Faustus, while in other nation’s literatures newer and newer paraphrases were born, which on their turn gave rise to further adaptations, and the scientific, aesthetic etc. literature also has gotten richer. However the canonized, more precisely, classicisized framework of interpretation is not transgressed by any of the newer writers and poets of the past centuries, moreover it is only the form of the legend that is rewritten – naturally with the aim of modernization. All of that as part of the literary heritage. As far as the problem of original sources is concerned: what can be regarded as a source and what is adaptation, which are the works that motivated writers, are just a matter of the preliminary work of the interpretation. On the other hand the problem that within the ancient, mythical tradition there is an original, ancient Faustus legend, does not raise any attention as that is “mere raw material”. The truth is ... that the beginning that has been preliminarily, yet directly definitory for centuries, is that original force that is given in the topic and thus it is difficult to bring it to the surface, preferably independently from the heritage that was built upon it. As far as the time dimension is concerned, we are searching in an undefineable, open past, moreover it is most probable that the legend itself is not entirely original, so to say, but it is the adaptation of a more ancient idea or topic. And by this its symbolism and hidden semantics lose their European characteristics.

scholarly journals The Time-Spatial Dimension of Eurozone Banking Systemic Risk

Risks ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 75 ◽  
Author(s):  
Matteo Foglia ◽  
Eliana Angelini
Keyword(s):  
Spatial Econometrics ◽  
Systemic Risk ◽  
Spatial Dependence ◽  
Financial Stability ◽  
Risk Measure ◽  
Spatial Dimension ◽  
Time Dimension ◽  
Cross Sectional ◽  
Time Space ◽  
Contagion Risk

In this paper, we measure the systemic risk with a novel methodology, based on a “spatial-temporal” approach. We propose a new bank systemic risk measure to consider the two components of systemic risk: cross-sectional and time dimension. The aim is to highlight the “time-space dynamics” of contagion, i.e., if the CDS spread of bank i depends on the CDS spread of other banks. To do this, we use an advanced spatial econometrics design with a time-varying spatial dependence that can be interpreted as an index of the degree of cross-sectional spillovers. The findings highlight that the Eurozone banks have strong spatial dependence in the evolution of CDS spread, namely the contagion effect is present and persistent. Moreover, we analyse the role of the European Central Bank in managing contagion risk. We find that monetary policy has been effective in reducing systemic risk. However, the results show that systemic risk does not imply a policy intervention, highlighting how financial stability policy is not yet an objective.

Philosophy or Auto-Anthropology?

2019 ◽  
Vol 56 (2) ◽  
pp. 26-28
Author(s):  
Daniel C. Dennett ◽  
Keyword(s):  
Computer Modeling ◽  
Evolutionary Theory ◽  
Empirical Work ◽  
The Other ◽  
Theoretical Physics ◽  
Experimental Physics ◽  
Timothy Williamson ◽  
Working Out ◽  
Armchair Philosophy

Timothy Williamson is mainly right, I think. He defends armchair philosophy as a variety of armchair science, like mathematics, or computer modeling in evolutionary theory, economics, statistics, and I agree that this is precisely what philosophy is, at its best: working out the assumptions and implications of any serious body of thought, helping everyone formulate the best questions to ask, and then leaving the empirical work to the other sciences. Philosophy – at its best – is to other inquiries roughly as theoretical physics is to experimental physics. You can do it in the armchair, but you need to know a lot about the phenomena with which the inquiry deals.

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