Absolute Tempo in Multiple Performances of Aboriginal Songs: Analyzing Recordings of Djanba 12 and Djanba 14

songs that are not notated but transmitted through live performance are of particular interest for the psychological study of the stability of tempo across multiple performances. While experimental research points to highly accurate memory for the tempi of well-known recorded music, this study asks whether there is any evidence of absolute tempo in a performance tradition that does not draw on such reference recordings. Fifty-four field recordings of performances of one Aboriginal dance-song, Djanba 14, were analyzed. Results showed that over a span of 34 years, performance tempi deviated positively or negatively, on average, by 2%. Such small tempo variation is similar to JND thresholds to discriminate the tempi of isochronous sequences. Thirty-five field recordings of another song from the same repertory, Djanba 12, deviated in tempi by an average of 3%. We discuss the musical, psychological, physical, and cultural factors likely to shape such temporal stability.

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Implications of Person Fluctuation for the Stability and Validity of Test Scores

Methodology ◽

10.1027/1614-2241.2.4.142 ◽

2006 ◽

Vol 2 (4) ◽

pp. 142-148 ◽

Cited By ~ 1

Author(s):

Pere J. Ferrando

Keyword(s):

Item Response ◽

Test Scores ◽

Temporal Stability ◽

Person Fit ◽

Item Parameters ◽

Individual Trait ◽

The Stability ◽

The Individual ◽

Different Levels ◽

Fluctuation Model

In the IRT person-fluctuation model, the individual trait levels fluctuate within a single test administration whereas the items have fixed locations. This article studies the relations between the person and item parameters of this model and two central properties of item and test scores: temporal stability and external validity. For temporal stability, formulas are derived for predicting and interpreting item response changes in a test-retest situation on the basis of the individual fluctuations. As for validity, formulas are derived for obtaining disattenuated estimates and for predicting changes in validity in groups with different levels of fluctuation. These latter formulas are related to previous research in the person-fit domain. The results obtained and the relations discussed are illustrated with an empirical example.

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The Vicissitudes of Conflict Measurement

European Psychologist ◽

10.1027/1016-9040.14.2.153 ◽

2009 ◽

Vol 14 (2) ◽

pp. 153-159 ◽

Cited By ~ 12

Author(s):

William J. Burk ◽

Jaap Denissen ◽

Muriel D. Van Doorn ◽

Susan J.T. Branje ◽

Brett Laursen

Keyword(s):

United States ◽

Close Relationships ◽

Temporal Stability ◽

The United States ◽

Short Intervals ◽

Time Points ◽

Best Friends ◽

Assessment Techniques ◽

The Stability ◽

Conflict Frequency

This report examined the stability and reliability of self-reported conflict frequency in relationships with mothers, fathers, and best friends. Participants were drawn from three independent samples in the Netherlands (n = 72, M = 15.6 years), Germany (n = 242, M = 19.7 years), and the United States (n = 250, M = 19.8 years). Participants completed both topic-based surveys and interaction-based diary assessments of conflict frequency. Within samples, comparable levels of internal consistency and temporal stability emerged in each relationship for both assessment techniques. Topic-based and interaction-based assessments of conflict frequency were moderately correlated in each relationship within samples. Daily topic-based assessments with short intervals between time points may provide the most advantageous assessment strategy for obtaining reliable measures of conflict frequency in adolescents’ close relationships.

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Temporal Stability and Biodiversity of Two Complex Antilisterial Cheese-Ripening Microbial Consortia

Applied and Environmental Microbiology ◽

10.1128/aem.69.7.4012-4018.2003 ◽

2003 ◽

Vol 69 (7) ◽

pp. 4012-4018 ◽

Cited By ~ 86

Author(s):

Ariel Maoz ◽

Ralf Mayr ◽

Siegfried Scherer

Keyword(s):

Species Composition ◽

Bacterial Species ◽

Temporal Stability ◽

Individual Characteristics ◽

Microbial Consortia ◽

Cheese Ripening ◽

Safe Food ◽

The Stability ◽

The Individual ◽

First Time

ABSTRACT The temporal stability and diversity of bacterial species composition as well as the antilisterial potential of two different, complex, and undefined microbial consortia from red-smear soft cheeses were investigated. Samples were collected twice, at 6-month intervals, from each of two food producers, and a total of 400 bacterial isolates were identified by Fourier-transform infrared spectroscopy and 16S ribosomal DNA sequence analysis. Coryneform bacteria represented the majority of the isolates, with certain species being predominant. In addition, Marinolactobacillus psychrotolerans, Halomonas venusta, Halomonas variabilis, Halomonas sp. (106 to 107 CFU per g of smear), and an unknown, gram-positive bacterium (107 to 108 CFU per g of smear) are described for the first time in such a consortium. The species composition of one consortium was quite stable over 6 months, but the other consortium revealed less diversity of coryneform species as well as less stability. While the first consortium had a stable, extraordinarily high antilisterial potential in situ, the antilisterial activity of the second consortium was lower and decreased with time. The cause for the antilisterial activity of the two consortia remained unknown but is not due to the secretion of soluble, inhibitory substances by the individual components of the consortium. Our data indicate that the stability over time and a potential antilisterial activity are individual characteristics of the ripening consortia which can be monitored and used for safe food production without artificial preservatives.

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Reliability and practical aspects of the disease impact measure on hypertensive patients

Revista Latino-Americana de Enfermagem ◽

10.1590/0104-1169.2900.2362 ◽

2013 ◽

Vol 21 (6) ◽

pp. 1258-1265 ◽

Cited By ~ 4

Author(s):

Renata Bigatti Bellizzotti Pavan ◽

Kátia Melissa Padilha ◽

Simey de Lima Lopes Rodrigues ◽

Roberta Cunha Matheus Rodrigues ◽

Maria Cecília Jayme Bueno Gallani

Keyword(s):

Internal Consistency ◽

Temporal Stability ◽

Emotional Impact ◽

Disease Symptoms ◽

Hypertensive Patients ◽

Social And Emotional ◽

Disease Impact ◽

Physical Impact ◽

The Stability ◽

The Impact

OBJECTIVE: to evaluate the feasibility, acceptability, the ceiling and floor effects and the reliability of the Instrument to Measure the Impact of Coronary Disease on Patient's Daily Life (IDCV) when applied to hypertensive patients. METHOD: one hundred and thirty seven hypertensive outpatients were interviewed, using questionnaires to collect sociodemographic and clinical data, followed by the IDCV. Reliability was assessed according to the temporal stability and internal consistency criteria. RESULTS: the IDCV was applied in 8.0 (±3.0) minutes with 100% of the items answered. A ceiling effect of 31.4% was observed in the domain Adjustment to the Disease. The stability measure was observed for the total score and for all domains. There was evidence of internal consistency of the total IDCV (α=0.83) and the domains Physical Impact of the Disease - Symptoms (α=0.78) and Social and Emotional Impact of the Disease (α=0.74). CONCLUSION: the IDCV is an instrument of easy use and its reliability among hypertensive patients is evidenced. The domain Adjustment to the Disease, however, should be reviewed in further studies.

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Temporal stability of genetic diversity revealed by microsatellite markers in restocked populations of Caspian roach, Rutilus caspicus (Yakovlev, 1870)

Animal Biology ◽

10.1163/15707563-17000081 ◽

2019 ◽

Vol 69 (3) ◽

pp. 327-347

Author(s):

Hadiseh Kashiri ◽

Ali Shabani ◽

Saeed Gorgin ◽

Mohamad Rezaei ◽

Ahmadreza Jabale

Keyword(s):

Genetic Diversity ◽

Gene Diversity ◽

Economic Value ◽

Temporal Stability ◽

Time Frame ◽

Wild Populations ◽

The Caspian Sea ◽

Sequential Bonferroni Correction ◽

The Stability ◽

Caspian Roach

Abstract Rutilus caspicus is considered one of the most important bony fish with high economic value in the Caspian Sea. Since the population size of Caspian roach has decreased during recent decades, restocking of the populations is done through releasing hatchery-produced larvae into the wild. In the present study, the genetic diversity of wild and hatchery populations of R. caspicus was investigated using ten microsatellite loci. Also, microsatellite analysis was performed to compare the population structure of Caspian roach over a time frame of about 11 years. Although the allelic and gene diversity of hatchery populations tended to be lower than those of the wild populations, no significant differences in genetic diversity parameters were observed among the wild and hatchery populations. Similar variation levels were noticed among temporal samples of the same population, suggesting temporal stability in the genetic diversity of the wild populations. In most cases, significant departure from the Hardy-Weinberg equilibrium was observed after sequential Bonferroni correction. Results from analysis showed that a captive hatchery population was the most differentiated group. Also, the UPGMA dendrogram showed that the captive population was the most distant group. The stability of genetic composition between the two periods was noticed by the low and non-significant and estimates. The results from this study are anticipated to provide important information for setting up more efficient strategies for the conservation and restocking of R. caspicus.

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Lr-LpStability of the Incompressible Flows with Nonzero Far-Field Velocity

Abstract and Applied Analysis ◽

10.1155/2011/856896 ◽

2011 ◽

Vol 2011 ◽

pp. 1-15 ◽

Cited By ~ 1

Author(s):

Jaiok Roh

Keyword(s):

Constant Velocity ◽

Incompressible Flows ◽

Temporal Stability ◽

Stationary Solutions ◽

Decay Rates ◽

Navier Stokes ◽

Far Field ◽

Spatial Direction ◽

Field Velocity ◽

The Stability

We consider the stability of stationary solutionswfor the exterior Navier-Stokes flows with a nonzero constant velocityu∞at infinity. Foru∞=0with nonzero stationary solutionw, Chen (1993), Kozono and Ogawa (1994), and Borchers and Miyakawa (1995) have studied the temporal stability inLpspaces for1<pand obtained good stability decay rates. For the spatial direction, we recently obtained some results. Foru∞≠0, Heywood (1970, 1972) and Masuda (1975) have studied the temporal stability inL2space. Shibata (1999) and Enomoto and Shibata (2005) have studied the temporal stability inLpspaces forp≥3. Then, Bae and Roh recently improved Enomoto and Shibata's results in some sense. In this paper, we improve Bae and Roh's result in the spacesLpforp>1and obtainLr-Lpstability as Kozono and Ogawa and Borchers and Miyakawa obtained foru∞=0.

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Thermal and temporal stability on the enteric viruses infectivity in surface freshwater

Water Science & Technology Water Supply ◽

10.2166/ws.2015.171 ◽

2015 ◽

Vol 16 (3) ◽

pp. 620-627 ◽

Cited By ~ 4

Author(s):

V. Moresco ◽

N. A. Damazo ◽

C. R. M. Barardi

Keyword(s):

Storage Temperature ◽

Quantitative Polymerase Chain Reaction ◽

Temporal Stability ◽

Enteric Viruses ◽

Human Adenovirus ◽

Adenovirus Type ◽

Storage Conditions ◽

Murine Norovirus ◽

Log Reduction ◽

The Stability

The present study aimed to evaluate the stability of Human Adenovirus type 2 (HAdV2) and Murine Norovirus 1 (MNV-1) in surface freshwater samples stored at different temperatures. For HAdV2 the stability decreased with increasing temperatures (−80 > −20 > 4 > 22 °C). The time required to reach one log reduction in viral titers (T90) was similar among all the times and temperatures by different cell-culture based methods and reverse transcription-quantitative polymerase chain reaction (RT-qPCR). The HAdV2 stability decreased with the time of storage temperature and methods employed, aside from samples stored at 22 and 4 °C which showed the lowest T90 values (50 days). For MNV-1, the samples stored at 22 and −20 °C showed higher log10 decay values, followed by 4 and −80 °C; while genome persistence was ranked as −80 > −20 > 4 > 22 °C. The T90 values were lower for samples stored at 22 °C (33 days), followed by 4, −20 and −80 °C with 111, 100 and 333 days, respectively. The results indicate that, under laboratory storage conditions, freshwater samples should be kept at 4 °C and at −80 °C for short- and long-term periods, respectively. This study provided useful information about thermal and temporal stability of the enteric viruses regarding sample storage conditions.

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Record grooves and salsa dance moves: the viejoteca phenomenon in Cali, Colombia

Popular Music ◽

10.1017/s0261143001001313 ◽

2001 ◽

Vol 20 (1) ◽

pp. 61-81 ◽

Cited By ~ 2

Author(s):

LISE WAXER

Keyword(s):

Popular Culture ◽

Scholarly Work ◽

Live Performance ◽

Musical Style ◽

Strong Force ◽

Recorded Music ◽

The City

Disfrutar recordando tiempos de ayer al compás de música aprendida a fuerza de bailarla. Revivir la emoción de aquellos Momentos involvidables y sentir que somos los mismos . . .To enjoy while remembering moments of yesteryear to the rhythm of music learned by force of dancing to it. To live again the emotion of those unforgettable moments and feel that we are the same . . .Slogan on a poster for Changó Viejoteca, 1995In the southwest Colombian metropolis of Cali, recorded music has come to exert an unusually strong force on local popular culture in this century. Not only did recordings play a key role in establishing Cuban music, and later, salsa, as the principal musical style of the city, they also became the basis for the record-centred dance scene that predominated in Cali during the 1940s through to the 1970s, and continued to be important as the live scene flourished during the 1980s and 1990s. The centrality of recorded music for Caleños (the inhabitants of Cali) challenges the privileging, in most scholarly work, of live performance as more ‘real’ or ‘authentic’ than its mediated versions. Indeed, for many decades, ‘playing music’ in Cali literally meant putting on a record, as a source of music for other social and expressive activities. The term disco (literally, record disc) still exists as a local synonym for ‘song’, even when it is a live rendition of a song, e.g. ‘vamos a tocar ese disco’ (let's perform that song).

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Experimental Research on the Stability of Spatial Lattice Shell

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.204-208.3048 ◽

2012 ◽

Vol 204-208 ◽

pp. 3048-3051

Author(s):

Gan Tang ◽

Wei Wei Li ◽

Lin Feng Yin ◽

Xiao Ming Guo

Keyword(s):

Control System ◽

Data Acquisition ◽

Experimental Research ◽

Single Layer ◽

Data Acquisition System ◽

Stability Behavior ◽

Initial Imperfections ◽

Spatial Lattice ◽

The Stability ◽

Lattice Shell

In the interest of an understanding to the imperfection stability behavior, a model of single layer spherical lattice shell was designed. The size and the pattern of initial imperfections were entirely measured. Automatic harmony loading control system and data acquisition system was used. The experiment plan, method and results have provided reference significance for the study on the stability of spatial lattice shell. The experimental results and the results of measured imperfections method were compared and analysed in detail. It is verified that measured imperfections method can accurately take into account of the effect of initial imperfections and it can be used for the supplementary checking computations of some important finished structures.

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Temporal stability of visually selective responses in intracranial field potentials recorded from human occipital and temporal lobes

Journal of Neurophysiology ◽

10.1152/jn.00458.2012 ◽

2012 ◽

Vol 108 (11) ◽

pp. 3073-3086 ◽

Cited By ~ 6

Author(s):

Arjun K. Bansal ◽

Jedediah M. Singer ◽

William S. Anderson ◽

Alexandra Golby ◽

Joseph R. Madsen ◽

...

Keyword(s):

Visual Recognition ◽

Cortical Plasticity ◽

Temporal Stability ◽

Temporal Cortex ◽

Inferior Temporal Cortex ◽

Field Potentials ◽

Long Time ◽

Degree Of Stability ◽

The Stability ◽

External Stimuli

The cerebral cortex needs to maintain information for long time periods while at the same time being capable of learning and adapting to changes. The degree of stability of physiological signals in the human brain in response to external stimuli over temporal scales spanning hours to days remains unclear. Here, we quantitatively assessed the stability across sessions of visually selective intracranial field potentials (IFPs) elicited by brief flashes of visual stimuli presented to 27 subjects. The interval between sessions ranged from hours to multiple days. We considered electrodes that showed robust visual selectivity to different shapes; these electrodes were typically located in the inferior occipital gyrus, the inferior temporal cortex, and the fusiform gyrus. We found that IFP responses showed a strong degree of stability across sessions. This stability was evident in averaged responses as well as single-trial decoding analyses, at the image exemplar level as well as at the category level, across different parts of visual cortex, and for three different visual recognition tasks. These results establish a quantitative evaluation of the degree of stationarity of visually selective IFP responses within and across sessions and provide a baseline for studies of cortical plasticity and for the development of brain-machine interfaces.

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