scholarly journals On the impact of non-modal phonation on phonological features

2017 ◽  
Author(s):  
Milos Cernak ◽  
Elmar Noth ◽  
Frank Rudzicz ◽  
Heidi Christensen ◽  
Juan Rafael Orozco-Arroyave ◽  
...  
Keyword(s):  
Phonological Features ◽  
The Impact

scholarly journals Exploring systematicity between phonological and context-cooccurrence representations of the mental lexicon

2008 ◽  
Vol 3 (2) ◽  
pp. 259-278 ◽  
Author(s):  
Monica Tamariz
Keyword(s):  
Mental Lexicon ◽  
Stress Pattern ◽  
Word Form ◽  
Speech Corpus ◽  
Frequent Form ◽  
Phonological Features ◽  
The Impact

This paper investigates the existence of systematicity between two similarity-based representations of the lexicon, one focusing on word-form and another one based on cooccurrence statistics in speech, which captures aspects of syntax and semantics. An analysis of the three most frequent form-homogeneous word groups in a Spanish speech corpus (cvcv, cvccv and cvcvcv words) supports the existence of systematicity: words that sound similar tend to occur in the same lexical contexts in speech. A lexicon that is highly systematic in this respect, however, may lead to confusion between similar-sounding words that appear in similar contexts. Exploring the impact of different phonological features on systematicity reveals that while some features (such as sharing consonants or the stress pattern) seem to underlie the measured systematicity, others (particularly, sharing the stressed vowel) oppose it, perhaps to help discriminate between words that systematicity may render ambiguous.

scholarly journals Phonological Constraints on the Utterance of L2 Clusters by Saudi ESL Learners

2021 ◽  
Vol 12 (4) ◽  
pp. 551-559
Author(s):  
Abdullah N. Alotaibi
Keyword(s):  
English Learners ◽  
Research Question ◽  
Syllable Structure ◽  
Consonant Clusters ◽  
Consonant Cluster ◽  
Phonological Features ◽  
Arabic And English ◽  
Esl Learners ◽  
The Impact ◽  
Phonological System

The field of L2 phonology did not receive much research compared to the other linguistic domains. To add to the field and expand the current literature, the present paper’s goal was to examine the impact of syllable structure differences between Arabic and English in uttering L2 English consonant clusters. The following research question was aimed to be answered: Do the differences between two languages’ syllable structure cause production difficulties in the consonant cluster to Saudi Arabian learners of English? The subjects of this investigation were L2 English learners from Saudi with intermediate proficiency levels in English. Applying the descriptive correlational type of research model, the results showed that learners’ production is mainly influenced by their native language-specific phonological features. The learners’ production of targeted L2 consonant clusters seemed to mirror their underlying phonological system, and syllables structures were modified to match their native Arabic phonological system as a result of language transfer. These findings should be taken into account by L2 speech educators as such speech difficulty is anticipated.

scholarly journals Phonological Constraints on the Utterance of L2 Clusters by Saudi ESL Learners

2022 ◽  
Author(s):  
Abdullah Nijr Al-Otaibi
Keyword(s):  
English Learners ◽  
Research Question ◽  
Syllable Structure ◽  
Consonant Clusters ◽  
Consonant Cluster ◽  
Phonological Features ◽  
Arabic And English ◽  
Esl Learners ◽  
The Impact ◽  
Phonological System

The field of L2 phonology did not receive much research compared to the other linguistic domains. To add to the field and expand the current literature, the present paper’s goal was to examine the impact of syllable structure differences between Arabic and English in uttering L2 English consonant clusters. The following research question was aimed to be answered: Do the differences between two languages’ syllable structure cause production difficulties in the consonant cluster to Saudi Arabian learners of English? The subjects of this investigation were L2 English learners from Saudi with intermediate proficiency levels in English. Applying the descriptive correlational type of research model, the results showed that learners’ production is mainly influenced by their native language-specific phonological features. The learners’ production of targeted L2 consonant clusters seemed to mirror their underlying phonological system, and syllables structures were modified to match their native Arabic phonological system as a result of language transfer. These findings should be taken into account by L2 speech educators as such speech difficulty is anticipated.

scholarly journals The impact of cross-language phonological overlap on bilingual and monolingual toddlers’ word recognition

2018 ◽  
Vol 22 (3) ◽  
pp. 476-499 ◽  
Author(s):  
KATIE VON HOLZEN ◽  
CHRISTOPHER T. FENNELL ◽  
NIVEDITA MANI
Keyword(s):  
Word Recognition ◽  
L2 Acquisition ◽  
Language Background ◽  
Feature Change ◽  
English Bilingual ◽  
Phonological Features ◽  
Cross Language ◽  
The Impact ◽  
L2 Word Recognition

We examined how L2 exposure early in life modulates toddler word recognition by comparing German–English bilingual and German monolingual toddlers’ recognition of words that overlapped to differing degrees, measured by number of phonological features changed, between English and German (e.g., identical, 1-feature change, 2-feature change, 3-feature change, no overlap). Recognition in English was modulated by language background (bilinguals vs. monolinguals) and by the amount of phonological overlap that English words shared with their L1 German translations. L1 word recognition remained unchanged across conditions between monolingual and bilingual toddlers, showing no effect of learning an L2 on L1 word recognition in bilingual toddlers. Furthermore, bilingual toddlers who had a later age of L2 acquisition had better recognition of words in English than those toddlers who acquired English at an earlier age. The results suggest an important role for L1 phonological experience on L2 word recognition in early bilingual word recognition.

Formation of Lunar Craters and Bright Rays as a Result of Meteorite Impacts

1962 ◽  
Vol 14 ◽  
pp. 415-418
Author(s):  
K. P. Stanyukovich ◽  
V. A. Bronshten
Keyword(s):  
Explosive Charge ◽  
The Moon ◽  
Meteorite Impacts ◽  
The Earth ◽  
Lunar Craters ◽  
The Impact

The phenomena accompanying the impact of large meteorites on the surface of the Moon or of the Earth can be examined on the basis of the theory of explosive phenomena if we assume that, instead of an exploding meteorite moving inside the rock, we have an explosive charge (equivalent in energy), situated at a certain distance under the surface.

The Geosciences Applied to Lunar Exploration

1962 ◽  
Vol 14 ◽  
pp. 169-257 ◽  
Author(s):  
J. Green
Keyword(s):  
Lunar Surface ◽  
Probable Mechanism ◽  
Point Of View ◽  
Lunar Exploration ◽  
Geological Model ◽  
Apply Geophysics ◽  
Surface Features ◽  
The Impact

The term geo-sciences has been used here to include the disciplines geology, geophysics and geochemistry. However, in order to apply geophysics and geochemistry effectively one must begin with a geological model. Therefore, the science of geology should be used as the basis for lunar exploration. From an astronomical point of view, a lunar terrain heavily impacted with meteors appears the more reasonable; although from a geological standpoint, volcanism seems the more probable mechanism. A surface liberally marked with volcanic features has been advocated by such geologists as Bülow, Dana, Suess, von Wolff, Shaler, Spurr, and Kuno. In this paper, both the impact and volcanic hypotheses are considered in the application of the geo-sciences to manned lunar exploration. However, more emphasis is placed on the volcanic, or more correctly the defluidization, hypothesis to account for lunar surface features.

Asteroid and Comet Impact Speeds upon Mars: Significance for Panspermia and the Supply of Organics

1997 ◽  
Vol 161 ◽  
pp. 197-201 ◽  
Author(s):  
Duncan Steel
Keyword(s):  
Probability Distributions ◽  
Regions Of Interest ◽  
Significant Fraction ◽  
Organic Chemicals ◽  
Impact Speed ◽  
The Mean ◽  
The Impact

AbstractWhilst lithopanspermia depends upon massive impacts occurring at a speed above some limit, the intact delivery of organic chemicals or other volatiles to a planet requires the impact speed to be below some other limit such that a significant fraction of that material escapes destruction. Thus the two opposite ends of the impact speed distributions are the regions of interest in the bioastronomical context, whereas much modelling work on impacts delivers, or makes use of, only the mean speed. Here the probability distributions of impact speeds upon Mars are calculated for (i) the orbital distribution of known asteroids; and (ii) the expected distribution of near-parabolic cometary orbits. It is found that cometary impacts are far more likely to eject rocks from Mars (over 99 percent of the cometary impacts are at speeds above 20 km/sec, but at most 5 percent of the asteroidal impacts); paradoxically, the objects impacting at speeds low enough to make organic/volatile survival possible (the asteroids) are those which are depleted in such species.

Organic Syntheses During the Impact of a Comet with a Gaseous Planet

1997 ◽  
Vol 161 ◽  
pp. 189-195
Author(s):  
Cesare Guaita ◽  
Roberto Crippa ◽  
Federico Manzini
Keyword(s):  
Polymeric Material ◽  
Molecular Form ◽  
Parent Compound ◽  
Blue Filter ◽  
Organic Syntheses ◽  
The Impact

AbstractA large amount of CO has been detected above many SL9/Jupiter impacts. This gas was never detected before the collision. So, in our opinion, CO was released from a parent compound during the collision. We identify this compound as POM (polyoxymethylene), a formaldehyde (HCHO) polymer that, when suddenly heated, reformes monomeric HCHO. At temperatures higher than 1200°K HCHO cannot exist in molecular form and the most probable result of its decomposition is the formation of CO. At lower temperatures, HCHO can react with NH3 and/or HCN to form high UV-absorbing polymeric material. In our opinion, this kind of material has also to be taken in to account to explain the complex evolution of some SL9 impacts that we observed in CCD images taken with a blue filter.

Hydrogen Cyanide Polymers from the Impact of Comet P/Shoemaker-Levy 9 on Jupiter

1997 ◽  
Vol 161 ◽  
pp. 179-187
Author(s):  
Clifford N. Matthews ◽  
Rose A. Pesce-Rodriguez ◽  
Shirley A. Liebman
Keyword(s):  
Amino Acids ◽  
Solar System ◽  
Hydrogen Cyanide ◽  
Nitrogen Heterocycles ◽  
Laboratory Studies ◽  
Heterogeneous Solids ◽  
The Many ◽  
Comet Halley ◽  
The Impact ◽  
By Products

AbstractHydrogen cyanide polymers – heterogeneous solids ranging in color from yellow to orange to brown to black – may be among the organic macromolecules most readily formed within the Solar System. The non-volatile black crust of comet Halley, for example, as well as the extensive orangebrown streaks in the atmosphere of Jupiter, might consist largely of such polymers synthesized from HCN formed by photolysis of methane and ammonia, the color observed depending on the concentration of HCN involved. Laboratory studies of these ubiquitous compounds point to the presence of polyamidine structures synthesized directly from hydrogen cyanide. These would be converted by water to polypeptides which can be further hydrolyzed to α-amino acids. Black polymers and multimers with conjugated ladder structures derived from HCN could also be formed and might well be the source of the many nitrogen heterocycles, adenine included, observed after pyrolysis. The dark brown color arising from the impacts of comet P/Shoemaker-Levy 9 on Jupiter might therefore be mainly caused by the presence of HCN polymers, whether originally present, deposited by the impactor or synthesized directly from HCN. Spectroscopic detection of these predicted macromolecules and their hydrolytic and pyrolytic by-products would strengthen significantly the hypothesis that cyanide polymerization is a preferred pathway for prebiotic and extraterrestrial chemistry.

Unusual Microstructure in Shock-Compacted Graphite

1970 ◽  
Vol 28 ◽  
pp. 474-475
Author(s):  
Lucien F. Trueb
Keyword(s):  
Mechanical Characteristic ◽  
Compression Wave ◽  
Gray Zone ◽  
Flyer Plate ◽  
Compacted Graphite ◽  
The Impact

Crushed and statically compressed Madagascar graphite that was explosively shocked at 425 kb by means of a planar flyer-plate is characterized by a black zone extending for 2 to 3 nun below the impact plane of the driver. Beyond this point, the material assumes the normal gray color of graphite. The thickness of the black zone is identical with the distance taken by the relaxation wave to overtake the compression wave.The main mechanical characteristic of the black material is its great hardness; steel scalpels and razor blades are readily blunted during attempts to cut it. An average microhardness value of 95-3 DPHN was obtained with a 10 kg load. This figure is a minimum because the indentations were usually cracked; 14.8 DPHN was measured in the gray zone.

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