1,729,273 research outputs found
Mensch Kollege: Thomas Wissing - "farewell my friend"
No full text"Thomas Wissing - "farewell my friend" with Klaus Damschen, Phyllis, Jaytube, Jean Paul Courage and Kai from Automatic Self Destruct. Pre-Order your copy here: http://www.amazon.de/Blessed-are-Meek... check out the new official homepage: http://www.thomaswissing.com." Shot at Tresorfabrik Tonstudio, Kamera und Schnitt Aljoscha Mallmann Info: THOMAS WISSING - „Blessed Are The Meek" • Label: Schönklang • Vertrieb: Schönklang VÖ: 4.03.2011 Das westfälische Gronau mit seinen nicht einmal 50.000 E..
Distribution, Abundance, and Age Structure of a Population of the Burrowing Mayfly, Hexagenia Limbata, in an Ohio Pond
No full textAuthor Institution: Department of Zoology, Miami UniversityRUTTER, ROBERT P., AND THOMAS E. WISSING, Distribution, Abundance and Age Structure of a Population of the Burrowing Mayfly, Hexagenia limbata, in an Ohio Pond. Ohio J. Sci. 75(1): 7, 1975
Akoestiese analise van die vokale van 'n groep bejaarde Afrikaanse vroue
No full textThis article reports on research on the characteristics of the Afrikaans vowels as produced by 20 elderly Afrikaans-speaking women with an average age of 86. In order to do this, it was necessary first to collect recordings of all the phonemic Afrikaans vowels, to analyse them and then to describe them in a comprehensive and informative way. With this in mind, I focused on the acoustic properties of these vowels, although I also integrated their relevant articulatory properties. I based the analysis and description as well as the evaluation of the results mainly on a descriptive model that had been developed for this purpose (Wissing 2012). Of course, numerous other models and sub-models exist, but this one covers all the acoustic parameters dictated by the project of which this article forms a part, namely Pronunciation varieties of Afrikaans.
A secondary, superordinate goal of this project was to compare different varieties with one another. The present research provides an acoustic description of the Afrikaans that was probably spoken approximately 80 years ago. Comparing this variety with other, modern ones in terms of how these varieties are used by present-day speakers of Afrikaans, for example, may be informative.
The method which I used to reach the descriptive goal is mostly in line with those followed in similar research endeavours, such as that of Pols et al. (1973) and Adank et al. (2004). In the present study the speech of 20 elderly female speakers was recorded and then analysed acoustically. The readers had not been selected beforehand - they took part voluntarily. The only condition was that they had to be Afrikaans speakers and should experience no inhibitive problems with regard to hearing or sight. Naturally they also had to be able to read out aloud and fluently. The stimulus material used was in the form of a reading list comprising 12 isolated, monosyllabic words. Each word contained a phoneme vowel of Afrikaans, such as the two members of the minimal pair nies and nuus. This pair enables one to determine the extent to which unrounding of the latter is present in the speech of this group of speakers, if any.
The vowels in each speaker's recordings were determined, segmented and annotated in the Praat phonetic analysis programme, after which the relevant acoustic information was extracted for further statistical analysis. All data gained by means of analysis was tabulated, on which basis an acoustic vowel chart was constructed. In this chart the vowels were placed according to their F1 and F2 formant values. Line graphs of all the parameters' average values for each vowel were also presented. The parameters involved are the usual first two vowel frequency formants, F1 and F2, and, to a lesser extent also F3, as well as the length of vowels (duration), intensity (total intensity; intensity in BF1 and BF2), fundamental frequency (F0), harmonicity-to-noise ratio (HNR) and the bandwidth of F1 (BdW F1)www.litnet.co.za/akoestiese-analise-van-die-vokale-van-n-groep-bejaarde- afrikaanse-vroue
Biografisch Woordenboek Gelderland I Hilversum:Verloren ,1999 90-6550-587-3
No full textItem does not contain fulltextP.W. van Wissing Biografisch Woordenboek Gelderland I Hilversum:Verloren ,1999 90-6550-587-
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Stookschriften. Pers en politiek tussen 1780 en 1800 - Pieter van Wissing (red.)
No full textReview of: Pieter van Wissing (red.). Stookschriften. Pers en politiek tussen 1780 en 1800. Nijmegen (Vantilt) 2008, 367 p., isbn 978 90 77503 85
Integrasie van artikulatoriese en akoestiese eienskappe van vokale: 'n beskrywingsraamwerk
No full textThe main purpose of this research was to develop an integrated framework for the description, analysis and interpretation of vowels, which should be applicable first and foremost to Afrikaans, but also to other languages. This broad applicability is, to a large extent, due to the nature of articulatory and acoustic phonetics. This framework can therefore be seen as an attempt to develop a universally applicable descriptive model. Although many well-written works exist which provide detailed discussions on the two types of phonetics, a comprehensive, integrated model such as the one proposed here has not yet been developed. This article is an attempt to contribute to the development of such a framework. I focus on the description of the physical, i.e. the acoustic, characteristics of vowels, as this facet gives one the opportunity to provide a wider-ranging and more precise description, which is imperative when different vowel systems are being compared. Such comparisons include those between the related languages Afrikaans and Dutch, but also, and in particular, the comparison of a number of pronunciation varieties of Afrikaans. The latter is an important aim of this comprehensive research project, of which this article provides an overview.
In the absence of sufficient artwork, I have made ample use of Dutch works (particularly that of Rietveld and Van Heuven, 2009), which constitute a comprehensive discussion of the articulation of vowels. Furthermore, these authors personally made available to me a complete set of magnetic resonance imaging (MRI), one for each Dutch vowel. The second author also provided his sound files of his reading of the vowels in the framework h_t. This was used in the development of an online interactive vowel chart. As can be seen and heard on this web page, the manner in which vowels are formed (articulated) is illustrated graphically. The pronunciation of vowels is combined with these images. An attractive feature available on this interactive chart is the comparison of the tongue and lip stances of a specific vowel with each of the remaining eleven vowels in a graphic manner.
The acoustic parameters under consideration in this article are the temporal parameter, duration and particularly various spectral parameters. The most important parameters are those which refer to the vowel formant frequency parameters F1, F2 and F3, as well as F0, which is the fundamental frequency. The bandwidth of vowels is often neglected in vowel descriptions in general. Nevertheless, I do discuss them here with specific reference to F1. Other parameters that are also interesting and important for a comprehensive description of vowels are total intensity and the intensity that can be measured in certain spectral areas (I investigate two: those called BF1 and BF2, respectively Band Pass Filter 1 and Band Pass Filter 2). According to my knowledge, the ratio between harmonicity and noise that can be found in vowel waveforms (i.e. harmonicity-to-noise ratio, or HNR) has not yet been used in the way in which I represent it in this research. The latter may be valuable when studying emphasis on vowels, be it stress or sentence accent.
In this article, both acoustic vowel charts and line graphs are proposed to describe the acoustic characteristics of vowels in a precise and comprehensive manner. These vowel charts and line graphs were derived from acoustic information extracted from the acoustic wave form and provided in the form of tables. It is indicated that although the use of gradient-related parameters is not required in the case of the short, steady-state vowels, the opposite applies to the diphthonged vowels with gliding first and second formants. This aspect of vowels receives special attention. Various methods of approach are illustrated, among others those related to the one that I propose. I refer to the method of description of Adank et al. (2004) in particular, which simply uses two readings on the temporal line of the formants, one on the 25% mark and one on the 75% mark. Smakman (2006) refines this method by suggesting a diphthongisation index. I indicate that this method is not superior to the one suggested in the present article.
In addition to explaining the use of acoustic vowel charts and line graphs, it is demonstrated how the statistical method of discriminant function analysis can be used to determine which parameters discriminate best between two or more naturally occurring groups of vowels. It is pointed out, for example, that one should always be able to discriminate between vowels that belong to the same natural phonological class in a more precise manner when making use of the full set of parameters rather than only the two traditional vowel frequency parameters, namely F1 and F2, even if duration, the other customary phonological feature, is also brought into the equation. This is demonstrated with reference to the high middle and high back vowels (/u/ and /o/). When only F1 and F2 are used, /u/ is classified correctly for only 56%, and /o/ for 75%. This level of success is increased to 94% and 95% respectively if all parameters are usedwww.litnet.co.za/integrasie-van-artikulatoriese-en-akoestiese-eienskappe-van- vokale-n-beskrywingsraamwerk
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