Search results

1

On Duration-Dispersion Strategies for Portfolio Immunization

100%

Kałuszka M., Kondratiuk-Janyska A., Technical University of Łódź I. o. M.

Acta Universitatis Lodziensis. Folia Oeconomica

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2004

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vol. 177

EN

This paper deals with new immunization strategies for a noncallable and default-free bond portfolio. This approach refers to the Fong and Vasicek (1984), the Nawalkha and Chambers (1996), the Balbàs and Ibáňez (1998), and the Balbàs, Ibáňez and Lopez (2002) studies among others and relies on minimizing a single-risk measure which is a linear combination of the duration gap and the dispersion of portfolio payments.

PL

Zadanie pt. „Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki” nr 885/P-DUN/2014 zostało dofinansowane ze środków MNiSW w ramach działalności upowszechniającej naukę

2

ime, Duration and Freedom – Bergson’s Critical Move Against Kant

88%

Kleinherenbrink A.

Diametros

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2014

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issue 39

203-230

EN

Research into Bergson’s philosophy downplays a key development in his first work, Time and free will. It is there that Bergson explicitly opposes himself to Kant by arguing that succession is not a temporal concept, but a spatial one. This is the crucial point of departure for Bergson’s entire philosophy, one that allows him to radically dismiss Kant’s notion of freedom in favor of one based on duration and multiplicity. This text has two aims. Firstly to add to Bergson scholarship by explicating the structure and force of Bergson’s initial argument against Kant, demonstrating that his engagement with Kant is much less incremental than has been suggested in secondary literature. Secondly, to reconstruct the consequences regarding freedom that Bergson immediately draws in departing from Kant, which illustrates the profundity and originality of his thought at the very inception of his oeuvre.

3

Tracking financial cycles in ten transitional economies 2005?2018 using singular spectrum analysis (SSA) techniques

88%

Skare M., Porada-Rochoń M.

Equilibrium. Quarterly Journal of Economics and Economic Policy

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2019

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vol. 14

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issue 1

7-29

EN

Research background: Financial cycles are behind many deep financial crises and it closely connects them with the business cycles, showing long memory properties and effects. Being closely connected with the business cycles, we must first explore the true nature of the financial cycles to understand the nature of the business cycles. Financial cycles are real, they have long memory properties and long-lasting effects on the economy. Purpose of the article: This study investigates the use of (SSA) in tracking and monitoring financial cycles focusing on ten (10) transitional economies 2005?2018. Methods: Singular spectrum analysis isolate significant oscillatory patterns (cycles) on housing markets with an average 4-years length. We isolate credit cycles just for Bulgaria, implying long memory properties of the cycles since this study investigated medium term (2?5 years) oscillations. Findings & Value added: The results prove the importance and advantages of using (SSA) in the study of financial cycles attempting to reveal the true nature of financial cycles as the principal component behind business cycles. Financial cycles show longer oscillations in the credit and property price series, which can explain 37.7%?49.9% of the variance of the total financial cycle fluctuations. Study results are of practical importance, particularly to policy-makers and practitioners in former transitional economies being vulnerable to adverse shocks on the financial markets. The results should assist policy-makers and financial practitioners in building and maintaining a sound financial policy needed to avoid future financial ?bubbles?.

4

An acoustic analysis of Pahari oral vowels

88%

Khan A. Q.

Lingua Posnaniensis

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2015

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vol. 56

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issue 2

29-39

EN

The aim of the current study is to present an acoustic account of the twelve oral vowels of Pahari by analyzing their formant pattern (F1 and F2) and duration. T o achieve this aim, an experiment was conducted. T em native speakers of Pahari participated in the study and were given a list of 12 oral vowels in CVC context for recording, where V is the target vowel. T he recorded material was analyzed by using Praat software. T he spectral analysis (F1 and F2) show that Pahari has four close, six mid and two open vowels. T he results also show that in term of duration these vowels occur in the form of long-short pairs that differ significantly quantatively (vowel duration).The study further exhibits that the short vowels are centralized as compared to their long counterpart

5

Feeling and Time: The Experience of Passage and its Relation to Meaning

75%

August III J. W.

Eidos. A Journal for Philosophy of Culture

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2018

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vol. 2

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issue 4(6)

82–92

EN

This essay notes the relationship between meaning and the felt passage of time. The concrete experience of fluctuations in the rapidity of passage seems to be universal to the human condition. We often associate the rapid passage of time with pleasure. This article shows that this commonly held view of passage is mistaken and that the more fundamental relationship between transformations of passage is found in fluctuations of meaning. Through explorations of boredom, ambition, and concern, this essay illustrates this connection between passage and meaning through an analysis of these feelings on what the author calls “the axis of fluidity,” a theoretical construction utilized to measure the experience of passage. The result of this essay is an assertion that fluctuations in the saturation of experience with meaning influences the feeling of passage. At the end of the work, an unresolved problem appears, and a potentially ameliorating hypothesis is offered.

6

Is Metrical Foot a Phonetic Object?

75%

Ciszewski T.

Research in Language

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2010

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vol. 8

115-134

EN

The assumption behind this pilot study is that metrical feet are not ‘groups of syllables’ or ‘interstress intervals’ but rather ‘groups of vowels’ extracted from the phonetic material contained between two stresses. We analysed the duration, pitch, intensity and acoustic energy of all vowels in isolated pronunciations of 72 initially stressed items (mono-, di- and trisyllables). The results reveal that pre-fortis clipping of the stressed vowel and final lengthening are interrelated, which suggests that stressed and unstressed final vowels are able to ‘negotiate’ their durations. Such ‘communication’ between the stressed vowels and the final unstressed ones is possible only if a mediating constituent (the foot) is postulated. Most importantly, we found no significant differences (p < .05) between the total acoustic energy and the total vowel duration in words having a different number of syllables, which supports the assumption of foot-level isochrony in English. It was also observed that the significant increase in vowel duration in stressed CVC monosyllables co-occurs with a significantly greater pitch slope, which we interpret to be a tonally driven implementation of minimal foot binarity requirement.

7

Zmiana i trwanie

75%

Stomma L.

Rocznik Antropologii Historii

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2011

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issue 1-2

223–230

XX

Reprint: L. Stomma, A jeśli było inaczej… Antropologia historii, Poznań 2008, s. 165-173.

8

Acoustic Correlates of Word Stress as a Cue to Accent Strength

75%

Volín J., Weingartová L.

Research in Language

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2014

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vol. 12

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issue 2

175-183

EN

Due to the clear interference of their mother tongue prosody, many Czech learners produce their English with a conspicuous foreign accent. The goal of the present study is to investigate the acoustic cues that differentiate stressed and unstressed syllabic nuclei and identify individual details concerning their contribution to the specific sound of Czech English. Speech production of sixteen female non-professional Czech and British speakers was analysed with the sounds segmented on a word and phone level and with both canonical and actual stress positions manually marked. Prior to analyses the strength of the foreign accent was assessed in a perception test. Subsequently, stressed and unstressed vowels were measured with respect to their duration, amplitude, fundamental frequency and spectral slope. Our results show that, in general, Czech speakers use much less acoustic marking of stress than the British subjects. The difference is most prominent in the domains of fundamental frequency and amplitude. The Czech speakers also deviate from the canonical placement of stress, shifting it frequently to the first syllable. On the other hand, they seem to approximate the needed durational difference quite successfully. These outcomes support the concept of language interference since they correspond with the existing linguistic knowledge about Czech and English word stress. The study adds specific details concerning the extent of this interference in four acoustic dimensions.

9

The logarithmic ACD model: The microstructure of the German and Polish stock markets

75%

Gurgul H., Syrek R.

Managerial Economics

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2016

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vol. 17

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issue 1

77-92

EN

The main goal of this paper is to compare the microstructure of selected stocks listed on theFrankfurt and Warsaw Stock Exchanges. We focus on the properties of duration on both markets and on fitting the appropriate ACD models. Because of the quite different levels of capitalization of stocks on these markets, we observe essential discrepancies between these stocks. Whilefor most German companies on the DAX30, the Burr distribution fits better than generalized gamma distribution, the latter distribution is superior in the case of the largest Polish companies. Analyzing series by hazard function, we note the similarity of hazard functions for companies on both markets, which tend to have a U-shaped pattern.

10

Is Metrical Foot a Phonetic Object?

75%

Ciszewski T.

Research in Language

|

2010

|

vol. 8

1-20

EN

The assumption behind this pilot study is that metrical feet are not ‘groups of syllables’ or ‘interstress intervals’ but rather ‘groups of vowels’ extracted from the phonetic material contained between two stresses. We analysed the duration, pitch, intensity and acoustic energy of all vowels in isolated pronunciations of 72 initially stressed items (mono-, di- and trisyllables). The results reveal that pre-fortis clipping of the stressed vowel and final lengthening are interrelated, which suggests that stressed and unstressed final vowels are able to ‘negotiate’ their durations. Such ‘communication’ between the stressed vowels and the final unstressed ones is possible only if a mediating constituent (the foot) is postulated. Most importantly, we found no significant differences (p < .05) between the total acoustic energy and the total vowel duration in words having a different number of syllables, which supports the assumption of foot-level isochrony in English. It was also observed that the significant increase in vowel duration in stressed CVC monosyllables co-occurs with a significantly greater pitch slope, which we interpret to be a tonally driven implementation of minimal foot binarity requirement.

11

Acoustic Correlates of Word Stress as A Cue to Accent Strength

75%

Volín J., Weingartová L.

Research in Language

|

2014

|

vol. 12

|

issue 2

175-183

EN

Due to the clear interference of their mother tongue prosody, many Czech learners produce their English with a conspicuous foreign accent. The goal of the present study is to investigate the acoustic cues that differentiate stressed and unstressed syllabic nuclei and identify individual details concerning their contribution to the specific sound of Czech English. Speech production of sixteen female non-professional Czech and British speakers was analysed with the sounds segmented on a word and phone level and with both canonical and actual stress positions manually marked. Prior to analyses the strength of the foreign accent was assessed in a perception test. Subsequently, stressed and unstressed vowels were measured with respect to their duration, amplitude, fundamental frequency and spectral slope. Our results show that, in general, Czech speakers use much less acoustic marking of stress than the British subjects. The difference is most prominent in the domains of fundamental frequency and amplitude. The Czech speakers also deviate from the canonical placement of stress, shifting it frequently to the first syllable. On the other hand, they seem to approximate the needed durational difference quite successfully. These outcomes support the concept of language interference since they correspond with the existing linguistic knowledge about Czech and English word stress. The study adds specific details concerning the extent of this interference in four acoustic dimensions.

12

On new immunization strategies under random shocks on the term structure of interest rates

63%

KONDRATIUK-JANYSKA A., KALUSZKA M.

Operations Research and Decisions

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2009

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vol. 19

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issue 1

91-101

EN

We introduce new measures of immunization such as exponential duration referring, in particular, to Fong and Vasiček [7], Nawalkha and Chambers [14], Balbás and Ibáñez [2], and Balbás et al. [3], but under the assumption of multiple shocks in the term structure of interest rates. These shocks are given by a random field. The cases of a single and multiple liabilities are discussed separately.

PL

Przedstawiamy nowe strategie immunizacji portfela przy założeniu wielokrotnych zaburzeń struktury terminowej stóp procentowych, gdzie zaburzenie jest opisane za pomocą sumy pewnego wielomianu i pola losowego [13]. Sformułowano twierdzenia dla ogólnej postaci pola losowego, a w przykładzie analizuje się przypadek płachty Browna. Przy kilku rodzajach zaburzeń struktury terminowej stóp procentowych rozważono zarówno przypadek jednego, jak i wielu zobowiązań [11]. Ponieważ rozważano różne postaci zaburzeń, otrzymano różne dolne oszacowania wartości strumienia pieniężnego (jako różnica aktywów i pasywów) w chwili H (horyzont inwestycyjny), gdy pojawią się zaburzenia. W konsekwencji strategie uodpornienia zawierają nowe miary ryzyka jak np. wykładniczy czas trwania.

13

Lauserohu akustilised korrelaadid eesti keeles

63%

Mihkla M., Sahkai H.

Mäetagused

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2017

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vol. 68

161-176

EN

The study examines the acoustic correlates of sentence stress in Estonian. The data consists of 18 four-word sentences read aloud by nine speakers in answer to three questions eliciting different information structures. The test words include six sets of triplets of words differing minimally in quantity degree. The words occur in three different stress conditions: (i) after narrow focus (the unstressed condition); (ii) as the nuclear accented word in a broad focus sentence (the stressed condition); and (iii) as an emphatically accented narrow focus (used for the purposes of normalisation). The test word is always the third word in the four-word sentence in order to avoid interferences from boundary signals. The potential correlates under study are the following: (i) the F0 range and peak height of the test word, measured in the test words with a H*L pitch accent respectively as the difference between the F0 maximum of the stressed syllable and the F0 minimum of the unstressed syllable, and as the difference from the mean F0 maximum of the test word in the three stress conditions produced by a speaker; (ii) the duration of the test word in the different stress conditions, measured as the difference from the mean duration of the test word in all three conditions; (iii) the intensity range and the maximal intensity level of the test word; (iv) the values of the F1 and F2 formants as indicators of vowel quality; and (v) the spectral emphasis of the stressed syllable of the test words. The above values were analysed separately for the three quantity degrees in order to determine a potential effect of the prosodic structure of the word on the acoustic realisation of sentence stress. The data was statistically analysed with the Systat software package. The classification power of the different parameters was determined, using linear discriminant analysis. The strongest correlate of sentence stress turned out to be F0, as was expected, given that sentence stress is phonologically realised as a pitch accent. From the two F0 values, the peak height was the stronger one, with a classification power of 89%, F0 range permitting to classify correctly 76% of the data. Almost equally strong correlates as the F0 range were the duration and intensity level, classifying correctly respectively 75% and 73% of the data. Vowel quality and spectral emphasis did not correlate significantly with sentence stress. The results also revealed an effect of lexical prosody on the acoustic realisation of sentence stress: the lengthening and the rise of the intensity level were the largest in the stressed words of the third (overlong) quantity degree.

14

“Our flame, the will-o’-the-wisp that dances in a few eyes, is soon to be blown out and all will fade” – Modern Literary Nostalgia as Death Mood

51%

Salmose N.

Jednak Książki. Gdańskie Czasopismo Humanistyczne

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2018

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issue 9 "Memory, Melancholy and Nostalgia"

109-122

EN

This article argues that there is a difference between nostalgic emotion and nostalgic mood and that the latter one often is a result of nostalgia’s inevitable link to death, entropy and teleology. It examines how nostalgic tropes, such as ruins, childhood, youth, astronomical representations, and subjective time (duration), inherited from the romantic poetry function as, and create, nostalgic death moods and retardations of eschatology in modernist fiction.

Refine search results

On Duration-Dispersion Strategies for Portfolio Immunization

ime, Duration and Freedom – Bergson’s Critical Move Against Kant

Tracking financial cycles in ten transitional economies 2005?2018 using singular spectrum analysis (SSA) techniques

An acoustic analysis of Pahari oral vowels

Feeling and Time: The Experience of Passage and its Relation to Meaning

Is Metrical Foot a Phonetic Object?

Zmiana i trwanie

Acoustic Correlates of Word Stress as a Cue to Accent Strength

The logarithmic ACD model: The microstructure of the German and Polish stock markets

Is Metrical Foot a Phonetic Object?

Acoustic Correlates of Word Stress as A Cue to Accent Strength

On new immunization strategies under random shocks on the term structure of interest rates

Lauserohu akustilised korrelaadid eesti keeles

“Our flame, the will-o’-the-wisp that dances in a few eyes, is soon to be blown out and all will fade” – Modern Literary Nostalgia as Death Mood