Decompositions by sources and by subpopulations of the Pietra index: two applications to professional football teams in Italy

AStA Advances in Statistical Analysis ◽

10.1007/s10182-021-00397-6 ◽

2021 ◽

Author(s):

Francesco Porro ◽

Mariangela Zenga

Keyword(s):

Professional Football ◽

Remarkable Feature ◽

Soccer Teams ◽

Decomposition By Subpopulations ◽

Special Case ◽

Pietra Index

AbstractIn this paper two innovative procedures for the decomposition of the Pietra index are proposed. The first one allows the decomposition by sources, while the second one provides the decomposition by subpopulations. As special case of the latter procedure, the “classical” decomposition in two components (within and between) can be easily obtained. A remarkable feature of both the proposed procedures is that they permit the assessment of the contribution to the Pietra index at the smallest possible level: each source for the first one and each subpopulation for the second one. To highlight the usefulness of these procedures, two applications are provided regarding Italian professional football (soccer) teams.

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Does Player Age Affect the Home Advantage? Coaches’ Perceptions and Data from Professional Football

10.31234/osf.io/wj85q ◽

2016 ◽

Author(s):

Niels van de Ven

Keyword(s):

Professional Experience ◽

Professional Football ◽

Home Advantage ◽

Soccer Teams

We hypothesized that football (soccer) teams with older players perform better in away games. This hypothesis is based on research on the home advantage that shows that feeling more familiar with the playing venue and having a familiar pregame routine are important causes of the home advantage. Older players are relatively more familiar with the location in away games and we therefore predict teams with older players to perform better in those games. We find that coaches (with professional experience) indeed think that older players perform relatively better in away games. Data from the Dutch professional league (N = 3060) confirmed that there was a very small effect: teams with an average higher age performed better in away games (controlling for team quality). Although we do seem to confirm the predicted effect that teams that are on average older do better in away games, this effect is very small.

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The Effect of Professional Football League on Corporate Promotion : Focusing on Professional Soccer Teams

The Korea Journal of Sport ◽

10.46669/kss.2021.19.4.066 ◽

2021 ◽

Vol 19 (4) ◽

pp. 755-766

Author(s):

Sang-Ho Han ◽

◽

In-wook Song ◽

Kwang-Hyun Moon

Keyword(s):

Professional Football ◽

Professional Soccer ◽

Soccer Teams

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Extreme self-sacrifice beyond fusion: Moral expansiveness and the special case of allyship

Behavioral and Brain Sciences ◽

10.1017/s0140525x18001620 ◽

2018 ◽

Vol 41 ◽

Cited By ~ 2

Author(s):

Daniel Crimston ◽

Matthew J. Hornsey

Keyword(s):

General Theory ◽

Biological Markers ◽

Natural Environment ◽

Relevant Dimension ◽

Special Case

AbstractAs a general theory of extreme self-sacrifice, Whitehouse's article misses one relevant dimension: people's willingness to fight and die in support of entities not bound by biological markers or ancestral kinship (allyship). We discuss research on moral expansiveness, which highlights individuals’ capacity to self-sacrifice for targets that lie outside traditional in-group markers, including racial out-groups, animals, and the natural environment.

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Determination of the phase structure of polymerblends by electron microscopy

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100109604 ◽

1978 ◽

Vol 36 (1) ◽

pp. 492-493

Author(s):

Dr. G. Kaemof

Keyword(s):

Screw Extruder ◽

Electron Microscopic ◽

Thin Sections ◽

Single Screw Extruder ◽

Transmission Electron ◽

The Matrix ◽

Twin Screw ◽

Special Case ◽

Microscopic Investigations

A mixture of polycarbonate (PC) and styrene-acrylonitrile-copolymer (SAN) represents a very good example for the efficiency of electron microscopic investigations concerning the determination of optimum production procedures for high grade product properties.The following parameters have been varied:components of charge (PC : SAN 50 : 50, 60 : 40, 70 : 30), kind of compounding machine (single screw extruder, twin screw extruder, discontinuous kneader), mass-temperature (lowest and highest possible temperature).The transmission electron microscopic investigations (TEM) were carried out on ultra thin sections, the PC-phase of which was selectively etched by triethylamine.The phase transition (matrix to disperse phase) does not occur - as might be expected - at a PC to SAN ratio of 50 : 50, but at a ratio of 65 : 35. Our results show that the matrix is preferably formed by the components with the lower melting viscosity (in this special case SAN), even at concentrations of less than 50 %.

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Test Validation Without Measurement

European Journal of Psychological Assessment ◽

10.1027/1015-5759/a000253 ◽

2016 ◽

Vol 32 (3) ◽

pp. 204-214 ◽

Cited By ~ 2

Author(s):

Emilie Lacot ◽

Mohammad H. Afzali ◽

Stéphane Vautier

Keyword(s):

Test Data ◽

Test Scores ◽

Scientific Explanation ◽

Test Validation ◽

Clinical Tests ◽

Ethical Perspective ◽

Power Of Test ◽

Memory Accuracy ◽

Social Uses ◽

Special Case

Abstract. Test validation based on usual statistical analyses is paradoxical, as, from a falsificationist perspective, they do not test that test data are ordinal measurements, and, from the ethical perspective, they do not justify the use of test scores. This paper (i) proposes some basic definitions, where measurement is a special case of scientific explanation; starting from the examples of memory accuracy and suicidality as scored by two widely used clinical tests/questionnaires. Moreover, it shows (ii) how to elicit the logic of the observable test events underlying the test scores, and (iii) how the measurability of the target theoretical quantities – memory accuracy and suicidality – can and should be tested at the respondent scale as opposed to the scale of aggregates of respondents. (iv) Criterion-related validity is revisited to stress that invoking the explanative power of test data should draw attention on counterexamples instead of statistical summarization. (v) Finally, it is argued that the justification of the use of test scores in specific settings should be part of the test validation task, because, as tests specialists, psychologists are responsible for proposing their tests for social uses.

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