Journal articles on the topic 'Second Germanic Sound Shift'
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Vennemann, Theo. "The Relative Chronology of the High Germanic Consonant Shift and the West Germanic Anaptyxis." Diachronica 8, no. 1 (January 1, 1991): 45–57. http://dx.doi.org/10.1075/dia.8.1.04ven.
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SUMMARY This paper studies systematic relationships between two sound changes, the High Germanic Consonant Shift and the West Germanic Anaptyxis. Since the High Germanic languages, i.e., High German and Lombardic, are a division of the West Germanic Sprachbund, it might be thought — and this is indeed the general view — that the more extensive West Germanic change necessarily antedates the more limited High Germanic change. But an examination of the relative chronology of the two changes in one of the languages that underwent both of them, Old High German, shows that, on the contrary, the systematic order of the two changes is the opposite: The better theory of the history of the Old High German phonological and morphological system is attained by the assumption that the High Germanic Consonant Shift antedates the West Germanic Anaptyxis. This result is in agreement with the author's overall theory of the Germanic Consonant Shifts by which the bifurcation of the Proto-Germanic tenues into the Low Germanic aspirates and the High Germanic affricates is one of the very oldest Germanic innovations. RÉSUMÉ L'article étudie les rapports systématiques entre deux changements phonétiques, à savoir celui de la mutation consonantique haut-germaine et celui de l'anaptyxis ouest-germaine. Comme les langues haut-germaines, i.e., le haut-allemand et le langobarde, représentent une division de l'union linguistique ouest-germaine, on pourra penser — et cela est en effet la position majoritaire — que le changement ouest-germain, étant le plus répandu, doit chronologiquement précéder le changement haut-germain plus restreint. Cependant, une examination de la chronologie relative dans une de ces langues qui a été sous-jettée à ces deux changements, i.e., le vieux haut-allemand, montre, au contraire, que l'ordre systématique de ces deux changements est opposé: On arrivera à une meilleure théorie de l'histoire du système phonologique et morphologique du vieux haut-allemand si'l on prend comme hypothèse que le changement consonantique du haut-germain précède chronologiquement l'ana-ptyxis ouest-germaine. Un tel résultat est en accord avec la théorie globale de l'auteur selon laquelle la bifurcation des occlusives proto-germain en aspirés bas-germains et affriqués haut-germains est une des plus vieilles innovations germaniques. ZUSAMMENFASSUNG In diesem Artikel werden systematische Beziehungen zwischen zwei Laut-verânderungen untersucht, der Hochgermanischen Lautverschiebung und der Westgermanischen Anaptyxe. Da die hochgermanischen Sprachen, Hoch-deutsch und Langobardisch, eine Abteilung des westgermanischen Sprach-bundes bilden, liegt es nahe, anzunehmen, wie es auch der allgemeinen Auf-fassung entspricht, daß der weiter verbreitete westgermanische Wandel dem enger eingegrenzten hochgermanischen Wandel vorausgegangen sein müsse. Aber eine Untersuchung der relativen Chronologie der beiden Lautwandel im Althochdeutschen als einer derjenigen Sprachen, die beiden Veränderungen ausgesetzt waren, zeigt, daB die systematische Beziehung zwischen ihnen die genau entgegengesetzte ist: Man erhält die bessere Theorie der Geschichte des althochdeutschen Laut- und Formensystems, wenn man annimmt, daB die Hochgermanische Lautverschiebung der Westgermanischen Anaptyxe voraus-ging. Dieses Ergebnis steht im Einklang mit der ubergreifenden Lautverschie-bungstheorie des Autors, der zufolge die Verzweigung der urgermanischen Tenues in die niedergermanischen Aspiraten und die hochgermanischen Affrika-ten eine der allerâltesten germanischen Isoglossen gestiftet hat.
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Hill, Eugen. "West Germanic monosyllabic lengthening and Gothic breaking as partially Proto-Germanic developments." NOWELE / North-Western European Language Evolution 70, no. 2 (September 19, 2017): 135–70. http://dx.doi.org/10.1075/nowele.70.2.02hil.
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Abstract The paper deals with two Germanic sound changes which are traditionally believed to postdate the disintegration of the Proto-Germanic parent language. The lengthening in several monosyllables, attested in West Germanic languages, is usually believed to be an innovation of this branch. The so-called Gothic breaking is similarly thought of as belonging exclusively to East Germanic. The paper shows that there is evidence suggesting a Proto-Germanic age for parts of both sound changes, in particular for a lengthening in monosyllabic words ending in PGmc *-r and for a lowering of PGmc *i if followed by *r. Proto-Germanic possessed at least three pronoun-based place adverbs formed with PGmc *-r, cf. Goth ƕar ‘where’ from ƕa- ‘what’, þar ‘there’ from þa- ‘that’ and hēr ‘here’ from hi- ‘this here’. The vocalism of these adverbs did not match that of the corresponding pronouns on two points. First, the vowels of the adverbs were probably long. Second, the close PGmc *ẹ̄ (Goth ē, OHG ia) of ‘here’ did not match PGmc *i in the corresponding pronoun. The paper assumes that the long vowels of the place adverbs emerged by a lengthening of etymologically short vowels in monosyllablic words ending in PGmc *-r. The timbre difference between PGmc *ẹ̄ in ‘here’ and PGmc *i in the corresponding pronoun for ‘this here’ is accounted for by a lowering of PGmc *i before *r. Both postulated developments must have been operating already in Proto-Germanic times but the lowering must have chronologically preceded the lengthening. The paper introduces the data supporting the assumptions made and discusses the apparent counterevidence.
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Page, B. Richard. "The Germanic Verschärfung and Prosodic Change." Diachronica 16, no. 2 (December 31, 1999): 297–334. http://dx.doi.org/10.1075/dia.16.2.04pag.
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SUMMARY This investigation of Germanic Verscharfung distinguishes between two types of phonological change. Sound change affects only the phonetic features of a segment whereas prosodic change consists of a change in the rhythmic structure of a language. The fixing of initial stress in Germanic is a prosodic change which conditions the gemination of intervocalic glides following short, previously unstressed vowels. However, the gemination of glides is irregular since prosodic change is phonetically abrupt but lexically gradual and may therefore lead to irregular changes on the segmental level. In contrast, the second stage of Germanic Verschärfung, the fortition of geminate glides to geminate obstruents in East and North Germanic, is an exceptionless sound change in which [-consonantal] becomes [+consonantal]. RÉSUMÉ Cette enquête de la Verschärfung germanique distingue entre deux types de changement phonologique. Tandis que le changement phonétique n'affecte que les caractéristiques phonétiques d'un segment, le changement prosodique transforme la structure rythmique d'une langue. L'introduction de l'accent initial dans la langue germanique est un changement prosodique qui entraîne la gémination des sons transitoires intervocaliques après une voyelle courte préalablement non-accentuée. Cependant, la gémination des sons transitoires est irrégulière, étant donné que le changement prosodique est phonétiquement abrupte, mais lexicalement graduel. Pour cette raison, le changement prosodique peut entraîner un changement irrégulier au niveau du segment. Par contre, la deuxième phase de la Verschärfung germanique, la transformation des sons transitoires géminés en occlusives géminées dans la langue germanique orientale et septentrionale, constitue un changement phonétique sans exception dans lequel [-consonne] devient [+consonne]. ZUSAMMENFASSUNG In dieser Untersuchung der germanischen Verschärfung werden zwei Arten von phonologischem Wandel unterschieden. Lautwandel betrifft nur die phonetischen Merkmale eines Segments, wahrend prosodischer Wandel die rhythmische Struktur einer Sprache verandert. Die Einführung des Initialakzents im Germanischen ist ein prosodischer Wandel, der die Verdop-pelung zwischenvokalischer Gleitlaute herbeiführt, wenn der vorangehende Vokal kurz und vorher unbetont war. Die Verdoppelung von Gleitlauten ist jedoch unregelmäßig, denn prosodischer Wandel ist phonetisch abrupt aber lexikalisch graduell. Deswegen kann prosodischer Wandel zu unregel-mäBigem Wandel auf der segmentalen Ebene führen. Andererseits ist die zweite Phase der Verschärfung, die Verstärkung von verdoppelten Gleitlauten zu verdoppelten Obstruenten im Ost- und Nordgermanischen, ein ausnahms-loser Lautwandel, in dem [-konsonantisch] zu [+konsonantisch] wird.
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Nedoma, Robert. "Südgermanische Runeninschriften." NOWELE / North-Western European Language Evolution 73, no. 1 (April 29, 2020): 91–115. http://dx.doi.org/10.1075/nowele.00035.ned.
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Abstract This paper deals with three South Germanic runic inscriptions that are highly relevant to language history. 1. The Frienstedt comb, which dates to the second half of the 3rd century A.D., bears four runes kaba = WGmc. ka(m)ba m. ‘comb’. The nominative sg. marker -a < PGmc. *-az represents the oldest attested West Germanic dialect feature (opposite PNorse -az, EGmc. -s). 2. noru on a neckring found near or in Aalen (ca. 500) renders a woman’s byname Nōru ‘the little one’. Final -u is best interpreted as nominative sg. of an ō-stem; it thus reflects the intermediate stage between PGmc. *-ō and Pre-OHG -Ø in later 6th century inscriptions. 3. The inscription on the Wurmlingen spearhead (presumably early 7th century) reads dorih, representing a dithematic name Dōr(r)īχ(χ) m. (< PGmc. *-rīkaz). This is the first example of Second Consonant Shift /k/ > /x(x)/.
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Callender, Craig. "Neogrammarian Sound Change, Lexical Diffusion, and the Second Consonant Shift." NOWELE / North-Western European Language Evolution 64-65 (April 1, 2012): 37–75. http://dx.doi.org/10.1075/nowele.64-65.03cal.
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Giorgi, Alessandra. "The Comparative Method in Synchronic Linguistics: The Case of Word Order." Armenian Folia Anglistika 16, no. 1 (21) (April 15, 2020): 9–32. http://dx.doi.org/10.46991/afa/2020.16.1.009.
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In this article I discuss the comparative method in formal linguistics when applied to word order phenomena in Italian, English and German. I argue that the comparison has to rest on sound theoretical basis in order to reach interesting conclusions. These languages might prima facie all look Subject- Verb-Object – SVO – languages, with some puzzling issues arising in German. At a closer look however, I will show that English and Italian pattern together as their basic word order – i.e., SVO – goes, as opposed to German, an SOV language. Conversely, English and German pattern together with respect to a property typical, even if not exclusively so, of Germanic languages, i.e. Verb Second.
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Natvig, David, and Joseph Salmons. "Connecting Structure and Variation in Sound Change." Cadernos de Linguística 2, no. 1 (May 15, 2021): 01–20. http://dx.doi.org/10.25189/2675-4916.2021.v2.n1.id314.
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“Structured heterogeneity”, a founding concept of variationist sociolinguistics, puts focus on the ordered social differentiation in language. We extend the notion of structured heterogeneity to formal phonological structure, i.e., representations based on contrasts, with implications for phonetic implementation. Phonology establishes parameters for what varies and how. Patterns of stability and variability with respect to a given feature’s relationship to representations allow us to ground variationist analysis in a framework that makes predictions about potential sound changes: more structure correlates to more stability; less structure corresponds to more variability. However, even though all change requires variability, not all variability leads to change. Two case studies illustrate this asymmetry, keeping a focus on phonetic change with phonological stability. First, Germanic rhotics (r-sounds) from prehistory to the present day are minimally specified. They show tremendous phonetic variability and change but phonological stability. Second, laryngeal contrasts (voicing or aspiration) vary and change in language contact. We track the accumulation of phonetic change in unspecified members of pairs of the type spelled <s> ≠ <z>, etc. This analysis makes predictions about the regularity of sound change, situating regularity in phonology and irregularity in phonetics and the lexicon. Structured heterogeneity involves the variation inherent within the system for various levels of phonetic and phonological representation. Phonological change, then, is about acquiring or learning different abstract representations based on heterogeneous and variable input.
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SCHRIJVER, PETER. "Celtic influence on Old English: phonological and phonetic evidence." English Language and Linguistics 13, no. 2 (July 2009): 193–211. http://dx.doi.org/10.1017/s1360674309002986.
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It has generally been assumed that Celtic linguistic influence on Old English is limited to a few marginal loanwords. If a language shift had taken place from Celtic to Old English, however, one would expect to find traces of that in Old English phonology and (morpho)syntax. In this article I argue that (1) the way in which the West Germanic sound system was reshaped in Old English strongly suggests the operation of a hitherto unrecognized substratum; (2) that phonetic substratum is strongly reminiscent of Irish rather than British Celtic; (3) the Old Irish phonetic−phonological system provides a more plausible model for reconstructing the phonetics of pre-Roman Celtic in Britain than the British Celtic system. The conclusion is that there is phonetic continuity between pre-Roman British Celtic and Old English, which suggests the presence of a pre-Anglo-Saxon population shifting to Old English.
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Matook, Sherry, Mary Sullivan, Amy Salisbury, Robin Miller, and Barry Lester. "Variations of NICU Sound by Location and Time of Day." Neonatal Network 29, no. 2 (March 2010): 87–95. http://dx.doi.org/10.1891/0730-0832.29.2.87.
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Purpose/Aims. The primary aim of this study was to identify time periods of sound levels >45 decibels (dB) in a large Level III NICU. The second aim was to determine whether there were differences in decibel levels across the five bays of the NICU, the four quadrants within each bay, and two 12-hour shifts.Design. A repeated measures design was used. Bay, quadrant, and shift were randomly selected for sampling. Staff and visitors were blinded to the location of the sound meter, which was placed in one of five identical wooden boxes and was preset to record for 12 hours.Sample. Sound levels were recorded every 60 seconds over 40 12-hour periods, 20 during the day shift and 20 during the night shift. Total hours measured were 480. Data were collected every other day during a three-month period. Covariates of staffing, infant census, infant acuity, and medical equipment were collected.Main Outcome Variable. The main outcome variable was sound levels in decibels, with units of measurement of energy equivalent sound level (Leq), peak instantaneous sound pressure level, and maximum sound pressure level during each interval for a total of 480 hours.Results. All sound levels were >45 dB, with average readings ranging from 49.5 to 89.5 dB. The middle bay had the highest levels, with an Leq of 85.74 dB. Quadrants at the back of a bay were louder than quadrants at the front of a bay. The day shift had higher decibel levels than the night shift. Covariates did not differ across bays or shifts.
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Żammit, Jacqueline. "Sociocultural Issues Experienced by Adults Learning Maltese as a Second Language." IAFOR Journal of Education 10, no. 1 (May 27, 2022): 73–89. http://dx.doi.org/10.22492/ije.10.1.04.
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The pedagogy of language has since time immemorial majored in the use of pens and other printed materials. However, there occurred a separation of the teaching culture into two major categories; the “big C” and “little c”, meaning high and popular culture. Over the years, advancements in various pedagogical techniques have made this boundary separating the two cultures thinner and thinner. It is now blurred with the result that one may not tell which teaching culture is applicable in various circumstances. The leading cause of these changes is sociocultural issues. Present-day evaluations of the humanities have caused a shift towards a broader view to accommodate anthropological and sociological approaches. This shift has also had an influence on the techniques which are used in teaching within the classroom setting. The current study focused on providing a comprehensive picture of various sociocultural problems affecting Maltese as a second language (ML2) pedagogy and the depth to which the reported sociocultural issues are significant to ML2 and any second language teaching and learning. This study investigated the challenges experienced by thirty-five ML2 adult learners. Participant interviews constituted the sole data collection tool. The participants, who came from all walks of life and spoke a variety of first language linguistic systems, including Semitic, Romance, Germanic, Slovanic, Indo-European, Indo-Aryan, and Indo-Iranian, experienced challenges regarding their linguistic abilities, culture shock, personalities, memory, and the teaching method. The current study was required to investigate challenges encountered by adult learners of ML2 and to make some recommendations for improving instruction for adult learners.
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James, Christine. "Sonar Technology and Shifts in Environmental Ethics." Essays in Philosophy 6, no. 1 (2005): 29–53. http://dx.doi.org/10.5840/eip20056116.
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For a philosopher, the history of sonar technology is fascinating. During the first and second World Wars, sonar technology was primarily associated with activity on the part of the sonar technicians and researchers. Usually this activity is concerned with creation of sound waves under water, as in the classic “ping and echo”. The last fifteen years have seen a shift toward passive, ambient noise “acoustic daylight imaging” sonar. Along with this shift a new relationship has begun between sonar technicians and environmental ethics.
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Kushneryk, Volodymyr, and Tetiana Savchuk. "PHONOSEMANTIC PHENOMENA AS LINGUISTIC REALITIES." Germanic Philology Journal of Yuriy Fedkovych Chernivtsi National University, no. 831-832 (2021): 166–74. http://dx.doi.org/10.31861/gph2021.831-832.166-174.
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Phonetic semantics is a phenomenon of natural involuntary phonetically motivated connection between phonemes and the non-sound signs of denotation, which underlies the nomination. In other words, the denotation of the nomination in sound imitation is represented by objects, phenomena, processes, which are characterized by the ability to form sounds that are subconsciously associated with these objects, phenomena, etc. Following the principles of sound symbolism, the denotation of the nomination is represented by objects, phenomena, processes, which are not characterized by sound production. Phonosemantics needs to take into account two aspects of the fundamental principle of an involuntary/arbitrary linguistic sign. The first involves the general relationship of phenomena and objects of reality. In the history of science, there are examples of connections that are established between seemingly incompatible phenomena. The second aspect is related to the fact that the recognition of the arbitrariness of a linguistic sign means the independence of the relationship between the signified and the signifying, which contradicts the system-wide principle of hierarchy, according to which each element of the higher system can be considered as an independent lower system. The sound complex with its meaning has a constantly changing dynamic nature. The processes that take place in language cause constant changes, and this can not but affect the connection between sound and the meaning of the word. The principle of analogy was extremely developed in the early stages of language formation. And, as a consequence of the process of sound changes ceasing, the principle of metaphorical analogy continues performing such functions, obscuring the primary connections between sound and the meaning of the lexeme. Therefore, it seems natural that sound changes are expressed in changes by analogy. Both sound change and the change by analogy involve the creative factor. The study aims to set the level of motivation of the German sound [b]. The sound under study dominates across the continuum of concepts such as water, chatter, movement and fear. Application of such modern research methods as phonosemantic, descriptive and comparative-historical analysis enabled obtaining a palette of semantic associative phonetic meanings of the sound [b]. The analysis of the German vocabulary demonstrated the sound’s semantic charge at the level of both individual lexical units and the text as a whole. There are ongoing studies in the field of both Germanic and other languages.
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Kelman, Ari Y., and Jeremiah Lockwood. "From Aesthetics to Experience: How Changing Conceptions of Prayer Changed the Sound of Jewish Worship." Religion and American Culture 30, no. 1 (2020): 26–62. http://dx.doi.org/10.1017/rac.2020.4.
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ABSTRACTThis article tracks changes in conceptions of American Jewish congregational prayer music during the second half of the twentieth century, paying specific attention to the late 1960s and early 1970s. During those years, more than fifty albums of new American Jewish synagogue music were released. These drew on the sounds of folk and rock music, and they represented a shift from the sounds of classical cantorial synagogue music. These changes have largely been understood as a shift away from cantorial styles, which emphasized performance and virtuosity, and toward more accessible and more participatory forms of prayer. This article contributes to our understanding of the sounds of American Jewish prayer practices by attending to the larger discourses in which the musical changes were situated. By listening to the music, reading album liner notes, and contemporaneous writings about Jewish prayer music, we discover a shift in descriptions and expectations of how Jewish prayer ought to work, from one that emphasizes the aesthetics of the music to one that emphasizes the experience of the music. We argue that music is one element of a larger shift in how people who made music for congregational prayer understood prayer and how best to engage congregations in that practice.
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Kim, Ji Young, and Nicole Wong. "(Divergent) Participation in the California Vowel Shift by Korean Americans in Southern California." Languages 5, no. 4 (November 6, 2020): 53. http://dx.doi.org/10.3390/languages5040053.
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This study investigates the participation in the California Vowel Shift by Korean Americans in Los Angeles. Five groups of subjects participated in a picture narrative task: first-, 1.5-, and second-generation Korean Americans, Anglo-Californians, and (non-immigrant) Korean late learners of English. Results showed a clear distinction between early vs. late bilinguals; while the first-generation Korean Americans and the late learners showed apparent signs of Korean influence, the 1.5- and the second-generation Korean Americans participated in most patterns of the California Vowel Shift. However, divergence from the Anglo-Californians was observed in early bilinguals’ speech. Similar to the late bilinguals, the 1.5-generation speakers did not systematically distinguish prenasal and non-prenasal /æ/. The second-generation speakers demonstrated a split-/æ/ system, but it was less pronounced than for the Anglo-Californians. These findings suggest that age of arrival has a strong effect on immigrant minority speakers’ participation in local sound change. In the case of the second-generation Korean Americans, certain patterns of the California Vowel Shift were even more pronounced than for the Anglo-Californians (i.e., /ɪ/-lowering, /ɑ/-/ɔ/ merger, /ʊ/- and /ʌ/-fronting). Moreover, the entire vowel space of the second-generation Korean Americans, especially female speakers, was more fronted than that of the Anglo-Californians. These findings suggest that second-generation Korean Americans may be in a more advanced stage of the California Vowel Shift than Anglo-Californians or the California Vowel Shift is on a different trajectory for these speakers. Possible explanations in relation to second-generation Korean Americans’ intersecting gender, ethnic, and racial identities, and suggestions for future research are discussed.
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Schwartz, Laurent, Luc Benichou, Jules Schwartz, Maxime Pontié, and Marc Henry. "Is the Second Law of Thermodynamics Able to Classify Drugs?" Substantia 6, no. 1 (March 7, 2022): 37–47. http://dx.doi.org/10.36253/substantia-1364.
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Specialization characterizes pharmacology, with the consequence of classifying the various treatments into unrelated categories. Treating a specific disease usually requires the design of a specific drug. The second law of thermodynamics is the driving force both for chemical reactions and for life. It applies to diseases and treatment. In most common diseases, there is a metabolic shift toward anabolism and anaerobic glycolysis, resulting in the release of entropy in the form of biomass. In accordance with the second principle of thermodynamics, treatment should aim at decreasing the entropy flux, which stays inside the body in the form of biomass. Most treatments aim at increasing the amount of entropy that is released by the cell in the form of thermal photons. As clinically different diseases often requires similar drugs, this calls for reinforcement in a quest for a single unified framework. For example, treatment of aggressive autoimmune diseases requires the same cytotoxic chemotherapy than for cancer. This strongly suggests that despite their apparent disparity, there is an underlying unity in the diseases and the treatments. The shift toward increased entropy release in the form of heat offers sound guidelines for the repurposing of drugs.
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LLOMPART, MIQUEL, and EVA REINISCH. "Robustness of phonolexical representations relates to phonetic flexibility for difficult second language sound contrasts." Bilingualism: Language and Cognition 22, no. 5 (September 6, 2018): 1085–100. http://dx.doi.org/10.1017/s1366728918000925.
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Listening to speech entails adapting to vast amounts of variability in the signal. The present study examined the relationship between flexibility for adaptation in a second language (L2) and robustness of L2 phonolexical representations. Phonolexical encoding and phonetic flexibility for German learners of English were assessed by means of a lexical decision task containing nonwords with sound substitutions and a distributional learning task, respectively. Performance was analyzed for an easy (/i/-/ɪ/) and a difficult contrast (/ε/-/æ/, where /æ/ does not exist in German). Results showed that for /i/-/ɪ/ listeners were quite accurate in lexical decision, and distributional learning consistently triggered shifts in categorization. For /ε/-/æ/, lexical decision performance was poor but individual participants’ scores related to performance in distributional learning: the better learners were in their lexical decision, the smaller their categorization shift. This suggests that, for difficult L2 contrasts, rigidity at the phonetic level relates to better lexical performance.
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Dashti, Abdulmohsen A. "A Consonant Shift in Kuwaitis’ Speech: Challenging the Bedouin Vs Sedentary hypothesis The case of [ʧ]." International Journal of Applied Linguistics and English Literature 7, no. 1 (December 15, 2017): 12. http://dx.doi.org/10.7575/aiac.ijalel.v.7n.1p.12.
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In light of sociolinguist phonological change, the following study investigates the shift of [ʧ] to [k] sound in the speech of Kuwaitis and argues against the Bedouin/ Sedentary distinction. The main hypothesis is twofold: first the shift seems to be driven not by the differences between the sedentary and Bedouin varieties, but by the widespread of the English language as a prestige form and by the recent change of Kuwaitis’ lifestyle; second, the shift is not totally in the direction of [k], but rather in the direction of a lexical replacement by either English loanwords, classical Arabic, or other Arab dialects. To test this hypothesis, 130 informants were informally interviewed. 503 tokens were collected and were examined across gender, age, level of education. Their speech was phonetically transcribed and accordingly was quantitatively and qualitatively analyzed. Results indicate that the [ʧ] variant is undergoing change and that the social parameters and the significant social changes, that Kuwait has undergone recently, have triggered this linguistic shift.
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Stanisz, Agata. "(Pod)wodne słuchanie i dryfująca antropologia hydrodźwięku." Przegląd Kulturoznawczy, no. 2 (48) (2021): 223–44. http://dx.doi.org/10.4467/20843860pk.21.017.14074.
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(Under)water Listening and a Drifting Anthropology of Hydrosound The aim of the article is to show the methodological and practical potential of combining anthropology of sound, wet ontology, and the oceanic ecology of the soundscape. I refer to this combination as the drifting anthropology of hydrosound. Taking advantage of the transdisciplinary nature of an anthropology of sound and presenting the specificity of underwater techno-mediated listening, I point to a shift towards less anthropocentric and inclusive understanding of human and environmental interactions. This inclusiveness is exceptionally clear in the practices of underwater listening. The article is divided into three parts. The first is an outline of the process of the emergence of anthropology of water and an introduction to the anthropology of sound. In the second part, I focus on the underwater listening processes. In the third, final one, I try to formulate the anthropology of hydrosound by referring to the wet ontology as well as multi- and interspecies approaches.
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Joergensen, Mie Laerkegaard, Petteri Hyvärinen, Sueli Caporali, and Torsten Dau. "The Short and Long-Term Effect of Sound Therapy on Visual Attention in Chronic Tinnitus Patients." Audiology Research 12, no. 5 (September 13, 2022): 493–507. http://dx.doi.org/10.3390/audiolres12050050.
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Sound therapy is one of the most common tinnitus treatments that can be used either to mask or to shift attention away from the tinnitus percept. However, the actual benefit of sound therapy and the mechanisms leading to the benefits remain limited. The objective of this study was to investigate the short-term (15 min) and long-term (2 months) effects of sound therapy on visual attention in chronic tinnitus patients. Visual attention was evaluated with the behavioral Attention Network Task, while the tinnitus-related distress was evaluated with the Tinnitus Handicap Inventory (THI) to quantify the effect of sound therapy. The study included 20 participants with chronic and bothersome tinnitus (>6 months, THI > 18) and 20 matched control participants. All participants took part in a first session consisting of a baseline condition, a short-term sound therapy condition and a silent control condition. The tinnitus participants also took part in a second session that evaluated the long-term effect of the therapy. A reduction in the tinnitus-related distress was found after the long-term use of sound therapy. Furthermore, a reduction in the differential index of the executive control (EC) attention network, indicating improved attention, was found after long-term use of sound therapy in the sound condition but not in the silent control condition. In contrast to earlier research, no differences were found between the tinnitus group and the control group for the baseline measurement of the EC attention network. Overall, the results suggest that there is no link between the visual attention networks and the sound therapy’s effect on tinnitus-related distress.
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Chan, May Pik Yu, and Jianjing Kuang. "Cue selection in the perception of pitch in music and speech." Journal of the Acoustical Society of America 151, no. 4 (April 2022): A59. http://dx.doi.org/10.1121/10.0010653.
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Spectral shape affects pitch perception; sounds with more high energy harmonics sound higher than sounds with low energy in higher harmonics. Flatter spectral slope corresponds to "tenser" voices while steeper spectral slope correlates to "breathier" voices in speech. In string instruments, the spectral slope differentiates sul ponticello and sul tasto. Listeners were found to integrate spectral slope cues in pitch perception in speech; however, work on music focused on cross-instrument differences, glossing over cue integration within instruments with fixed-formant frequencies. Furthermore, spectral cues and F0 co-vary in human pitch production, but are largely independent in instrumental music. It remains unclear whether music processing is as integrative as speech processing. In this study, listeners were given either speech or violin stimuli with identical pitch contour pairs, and were asked to decide whether the second contour was higher or lower in pitch compared to the first. The spectral slope of each sound was manipulated to include all combinations of “breathier”/“ sul tasto” and “tenser”/“ sul ponticello” sounding pairs. Results show that listeners integrate spectral slope cues in pitch perception in speech and violin stimuli similarly, with similar categoricity and shift. Overall, listeners with higher musicality have more categorical responses but no differences in shift.
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Montanari, Simona. "Sammarinese, the Endangered Language of the Republic of San Marino: A Preliminary Study of Documentation and Description." Dialectologia et Geolinguistica 26, no. 1 (November 27, 2018): 57–95. http://dx.doi.org/10.1515/dialect-2018-0004.
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Abstract This paper presents the results of a preliminary study of documentation and description of Sammarinese, a peripheral variety of Romagnol spoken in the Republic of San Marino. Despite having been the country’s primary oral language for almost 1,000 years, Sammarinese is on the verge of extinction today as universal education and economic development have caused language shift to Italian beginning from the 1960s. A corpus of primary oral language data was collected from 17 informants in the form of semi-structured interviews with the goal of creating an archive of oral language histories in Sammarinese. These data, together with a corpus of vernacular and folkloric literature, served as the database for a descriptive analysis of some of the major phonological and morphosyntactic traits of the language. The results confirm Sammarinese’s status as a borderline Romagnol variety. However, the findings also reveal a language that stands apart from neighboring varieties due to complex historical and geographical factors, including a Celtic substratum from the pre-Roman and Roman times, a Byzantine Greek heritage and Lombard/ Germanic influence from the second half of the first millennium, and a geographic position that resulted in linguistic isolation from the vernaculars spoken in the Central Romagnol plain.
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Utami, Ismi Maulina. "ENGLISH PRONUNCIATION DIVERSITY PRODUCED BY INDONESIAN COVER-SINGERS: A CASE STUDY ON THE YOUTUBE CHANNEL." LET: Linguistics, Literature and English Teaching Journal 11, no. 1 (June 30, 2021): 20. http://dx.doi.org/10.18592/let.v11i1.4598.
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This study focuses on the pronunciation changes of the Indonesian cover-singers on YouTube. It is qualitative research by using documentation technique. There were three subjects of this study namely RM with song “Memories”, AH with song “Thank You Next”, and HD with song “Comethru”. At the first singer’s pronunciation, there were 26 mispronounced words and she did consonant deletion, vowel shift, vowel coalescence, consonant neutralization, consonant insertion, and metathesis. At the second singer’s pronunciation, there were 17 mispronounced words and she did consonant deletion, vowel shift, consonant neutralization, consonant insertion, assimilation, and diphthongization. At the third singer’s pronunciation, there were 12 mispronounced words and she did consonant deletion, consonant neutralization, vowel shift, vowel coalescence, and consonant insertion. These pronunciation changes occur because of the distinction between the phonological system of English and Bahasa Indonesia , and the Indonesian cover-singers still rely on the word’s spelling rather than phonetic sound. Regardless of these two reasons, there are also several similarities in the phonological system between English and Bahasa Indonesia, but the Indonesian cover-singers still perform the pronunciation changes.
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Haygood, Montana, and Bruce N. Walker. "Temporary and Permanent Hearing Loss Among College-Aged Drumline Members." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 60, no. 1 (September 2016): 1009–13. http://dx.doi.org/10.1177/1541931213601234.
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Many musicians experience dangerous levels of sound exposure throughout their musical careers. In particular, members of marching percussion ensembles (“drumlines”) are exposed to prolonged periods of potentially damaging levels of sound. As a result, they are at risk of developing hearing loss. This study determines whether any significant hearing loss or threshold shifts occurs with drumline members in an indoor drumline and college marching band. Two groups of participants were analyzed: one group consisted of both college drumline and community-based competitive drumline members, while the other (control) group consisted of non-drummers who were matched for age and gender to the drummers. The non-drummers were given an audiogram to determine the lowest levels of sound they could detect. The drummers were given an audiogram immediately before and after a drumline rehearsal. First, the drummer group showed significant hearing loss at the start of their rehearsal, compared to the non-drummer group. This is indication of permanent hearing loss for the drummers. Second, the drummers’ hearing thresholds after rehearsal were compared to their levels immediately before rehearsal. A significant shift in the drummer group’s hearing threshold was found, indicating (additional) temporary hearing loss occurring over the course of the rehearsal. Earplug usage of the drummers during their rehearsals was also analyzed. Drummers who did not wear earplugs exhibited a significantly greater threshold shift (i.e., hearing loss) than drummers who did wear earplugs. Evidence of both temporary and permanent hearing loss amongst the drummer group makes it clear that drumline members should be required to wear hearing protection during rehearsals, and presumably also during performances.
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Suits, Gregg W., Robert E. Brummett, and Jim Nunley. "Second Place — Resident Clinical Science Award 1993: Effect of Otologic Drill Noise on ABR Thresholds in a Guinea Pig Model." Otolaryngology–Head and Neck Surgery 109, no. 4 (October 1993): 660–67. http://dx.doi.org/10.1177/019459989310900405.
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The Noise Generated By The Otologic Drill Has Been Implicated As A Cause Of Sensorineural Hearing Loss After Ear Surgery. However, Clinical Studies On This Subject Are Contradictory And Difficult To Interpret. Therefore A Guinea Pig Model Was Used To Study Whether The Level Of Noise Generated By The Otologic Drill Can Cause Threshold Shifts In The Auditory Brainstem Response (Abr). The Source Noise Was A Recording Obtained During A Human Cadaver Mastoidectomy Using A Microphone And An Accelerometer. Ten Female Topeka-Strain Guinea Pigs Were Exposed To The Recorded Drill Noise For A Period Of 55 Minutes. Exposure Included Both Air-Conducted Energy From A Speaker And Bone-Conducted Energy From A Bone Vibrator Applied Directly To The Skull. Abr Threshold Measurements Were Taken Pre-Exposure (Baseline), Immediately After Exposure, And At Weekly Intervals Thereafter For 3 Weeks. Three Control Animals Were Subjected To The Same Procedure Without The Sound Exposure. A Significant Threshold Shift ( P > 0.0001) Was Seen For Each Frequency Tested (2, 4, 8, 16, 20, And 32 Khz) Immediately After Exposure To Noise In All Experimental Animals. Thresholds Returned To Baseline Within 3 Weeks. We Conclude That The Level Of Noise Generated By The Otologic Drill In Mastoid Surgery Can Cause A Temporary Threshold Shift In This Guinea Pig Model
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Onogi, Kimie, Hiroshi Yokoyama, and Akiyoshi Iida. "Effects of jet angle on harmonic structure of sound radiating from the flute." Acta Acustica 5 (2021): 11. http://dx.doi.org/10.1051/aacus/2021003.
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For an isolated flute head joint, the effects of jet angle on harmonic structure of a single note are investigated within the practical range for human players. The mechanisms of these effects are discussed on the basis of both the radiated sound and the flow field measured with a hot-wire anemometer. The blowing parameters, viz., jet angle (angle between jet direction and window), jet offset (relative height of jet direction from the edge), lip-to-edge distance, and flow rate, were varied independently by using an artificial blowing device based on measured conditions for a human player, where the jet direction is defined as that measured without the head joint. The radiated sound revealed that jet angle varied the differential sound pressure level of the second to third harmonic (ΔSPL) less than jet offset, however, as much as flow rate and more than lip-to-edge distance. The spatial distribution of jet fluctuation center showed that, with increasing jet angle (the jet direction approaches vertical to the window), the jet deflected more inside, so that the actual jet offset was estimated to be further inside. The variation of ∆SPL with jet angle seems to be caused mainly by this shift in the actual jet offset.
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Wubbels, R. J., and N. A. M. Schellart. "Neuronal Encoding of Sound Direction in the Auditory Midbrain of the Rainbow Trout." Journal of Neurophysiology 77, no. 6 (June 1, 1997): 3060–74. http://dx.doi.org/10.1152/jn.1997.77.6.3060.
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Wubbels, R. J. and N.A.M. Schellart. Neuronal encoding of sound direction in the auditory midbrain of the rainbow trout. J. Neurophysiol. 77: 3060–3074, 1997. Acoustical stimulation causes displacement of the sensory hair cells relative to the otoliths of the fish inner ear. The swimbladder, transforming the acoustical pressure component into displacement, also contributes to the displacement of the hair cells. Together, this (generally) yields elliptical displacement orbits. Alternative mechanisms of fish directional hearing are proposed by the phase model, which requires a temporal neuronal code, and by the orbit model, which requires a spike density code. We investigated whether the directional selective response of auditory neurons in the midbrain torus semicircularis (TS; homologous to the inferior colliculus) is based on spike density and/or temporal encoding. Rainbow trout were mounted on top of a vibrating table that was driven in the horizontal plane to simulate sound source direction. Rectilinear and elliptical (or circular) motion was applied at 172 Hz. Generally, responses to rectilinear and elliptical/circular stimuli (irrespective of direction of revolution) were the same. The response of auditory neurons was either directionally selective (DS units, n = 85) or not (non-DS units, n = 106). The average spontaneous discharge rate of DS units was less than that of non-DS units. Most DS units (70%) had spontaneous activities <1 spike per second. Response latencies (mode at 18 ms) were similar for both types of units. The response of DS units is transient (19%), sustained (34%), or mixed (47%). The response of 75% of the DS units synchronized to stimulus frequency, whereas just 23% of the non-DS responses did. Synchronized responses were measured at stimulus amplitudes as low as 0.5 nm (at 172 Hz), which is much lower than for auditory neurons in the medulla of the trout, suggesting strong convergence of VIIIth nerve input. The instant of firing of 42% of the units was independent of stimulus direction (shift <15°), but for the other units, a direction dependent phase shift was observed. In the medial TS spatial tuning of DS units is in the rostrocaudal direction, whereas in the lateral TS all preferred directions are present. On average, medial DS units have a broader directional selectivity range, are less often synchronized, and show a smaller shift of the instant of firing as a function of stimulus direction than lateral DS units. DS response characteristics are discussed in relation to different hypotheses. We conclude that the results are more in favor of the phase model.
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Wambacq, Ilse J. A., Janet Koehnke, Joan Besing, Laurie L. Romei, AnnMarie DePierro, and David Cooper. "Processing Interaural Cues in Sound Segregation by Young and Middle-Aged Brains." Journal of the American Academy of Audiology 20, no. 07 (July 2009): 453–58. http://dx.doi.org/10.3766/jaaa.20.7.6.
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Background: When listening to one speaker while another conversation is occurring simultaneously, we separate the competing sounds by processing physical cues such as common onset time, intensity, frequency harmonicity, and spatial location of the sound sources. Spatial location is determined in large part by differences in arrival of a sound at one ear versus the other ear, otherwise known as interaural time difference (ITD) or interaural phase difference (IPD). There is ample anecdotal evidence that middle-aged adults experience greater difficulty listening to speech in noise, even when their audiological evaluation does not reveal abnormal results. Furthermore, it has been shown that the frequency range for IPD processing is reduced in middle-aged adults compared to young adults, even though morphological changes in the auditory evoked potential (AEP) response were only observed in older adults. Purpose: The purpose of the current study was to examine early aging effects (<60 years) on IPD processing in concurrent sound segregation. Research Design: We examined the change AEP evoked by detection of a mistuned and/or phase-shifted second harmonic during the last 1500 msec of a 3000 msec amplitude-modulated harmonic complex. A passive listening paradigm was used. Study Sample: Ten young (21–35 years) and 11 middle-aged (48–57 years) adults with normal hearing were included in the study. Data Collection and Analysis: Scalp electroencephalographic activity was recorded from 63 electrodes. A temporospatial principal component analysis was conducted. Spatial factor scores of individual spatial factors were the dependent variable in separate mixed-design ANOVAs for each temporal factor of interest. Stimulus type was the within-subject independent variable, and age group was the between-subject independent variable. Results: Results indicated a delay in the upward P2 slope and the P2 peak latency to a sudden phase shift in the second harmonic of a harmonic complex in middle-aged adults compared to young adults. This AEP difference increased as mistuning (as a second grouping cue) decreased and remained evident when the IPD was the only grouping cue. Conclusions: We conclude that our findings reflect neurophysiologic differences between young and middle-aged adults for IPD processing in concurrent sound segregation.
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Laila, Malikatul, and Hepy Adityarini. "GLIDING DECREASE OF PRONOUNCING ENGLISH DIPHTHONG BY JAVANESE LEARNERS OF ENGLISH." Kajian Linguistik dan Sastra 20, no. 2 (December 1, 2008): 141–46. http://dx.doi.org/10.23917/kls.v20i2.4963.
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The normal pronunciation of diphthong lies in putting the prominence or length to the nucleus vowel and gliding to the second one. However, this is not as the mostly phenomena of Javanese Learners of English (JLE)’s way of pronouncing diphthong. JLE tends to make shifts in pronouncing the quality of diphthong, one of which is a gliding decrease or omission. The data are collected by techniques of recording and demonstration. The data analysis uses techniques of comparing and contrasting be- tween JLE’s pronunciation and Received Pronunciation (RP). To amount of frequency in comparing JLE’s and RP, the percentage of the highest occurrence can be indi- cated. The result shows that JLE’s pronunciation of diphtong tends to reduce the fortis of nucleus before gliding or there is no gliding in the second vowel. Key words: sound shift, JLE, SPE, gliding, fortis, and pronunciation quality.
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Ng, Yi Kee, and Kok Yoong Lim. "Sonification of weather data as a non-human-centric artistic approach." F1000Research 11 (January 26, 2022): 96. http://dx.doi.org/10.12688/f1000research.73543.1.
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Background - In the mid-20th century, the emergence of sound studies demonstrated a shift of research interest in sonic practitioners. This field gains its prevalence by expanding the boundaries of prevailing conception through proposing alternative creative approaches in sound art practices. Methods – Two methods were presented – listening and sounding to promote creative sound making. The first method, listening involves soundwalking and recording sound from the external environments. These recordings were then re-evaluated and post-processed in audio editing software. The second method, sounding involves the creation of a weather data sonification system in Pure Data environment, in which the perceptual experience from the first method was taken into consideration. Result – First method enables the genesis of creative idiosyncrasies, such as preferences and ideas through the sonic perception of environmental events. In this process, noise and weather were identified as environmental components that share similar sensible qualities. Thus, noise is a prevalent medium that inspires the creation of sound generators in the sonification system presented in this paper. The sonic output of data sonification reveals an analogical connection between weather data and sonic parameters, in which changes in data values result in changes in acoustic properties. These outputs deliver different sensibilities based on their data parameters; sonification of temperature data might suggest an alarming effect to the listener. Conclusion – The proposed methods were intricately linked, suggesting environmental events to be perceived and realized through a non-scientific perspective. By highlighting aesthetic possibilities of environmental components, this paper presents an alternative perspective in contrast with the human-centric worldview through the creation of sonic works.
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Šimáčková, Šárka, and Václav Jonáš Podlipský. "Foreign Language Learners Acquire L2 Phonetic Detail: Goose and Foot Fronting in Non-Native English." Research in Language 15, no. 4 (December 30, 2017): 385–403. http://dx.doi.org/10.1515/rela-2017-0022.
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Whether late learners discern fine phonetic detail in second-language (L2) input, form new phonetic categories, and realize them accurately remains a relevant question in L2 phonology, especially for foreign-language (FL) learning characterized by limited exposure to interactional native input. Our study focuses on advanced Czech learners’ production of the L2 English vowels GOOSE and FOOT. While English /u/ and /ʊ/ have been undergoing fronting, their Czech equivalents, /uː/ and /u/, are fully back. We show that although the spectral differentiation of /u/-/ʊ/ is smaller in the learners’ than in native speech, the vowels being contrasted primarily in length, even FL learners can shift their L2 sound categories towards native-like targets, or in this case, produce English /u/-/ʊ/ as fronted.
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Daliri, Ayoub, Sara-Ching Chao, and Lacee C. Fitzgerald. "Compensatory Responses to Formant Perturbations Proportionally Decrease as Perturbations Increase." Journal of Speech, Language, and Hearing Research 63, no. 10 (October 16, 2020): 3392–407. http://dx.doi.org/10.1044/2020_jslhr-19-00422.
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Purpose We continuously monitor our speech output to detect potential errors in our productions. When we encounter errors, we rapidly change our speech output to compensate for the errors. However, it remains unclear whether we adjust the magnitude of our compensatory responses based on the characteristics of errors. Method Participants ( N = 30 adults) produced monosyllabic words containing /ɛ/ (/hɛp/, /hɛd/, /hɛk/) while receiving perturbed or unperturbed auditory feedback. In the perturbed trials, we applied two different types of formant perturbations: (a) the F1 shift, in which the first formant of /ɛ/ was increased, and (b) the F1–F2 shift, in which the first formant was increased and the second formant was decreased to make a participant's /ɛ/ sound like his or her /æ/. In each perturbation condition, we applied three participant-specific perturbation magnitudes (0.5, 1.0, and 1.5 ɛ–æ distance). Results Compensatory responses to perturbations with the magnitude of 1.5 ɛ–æ were proportionally smaller than responses to perturbation magnitudes of 0.5 ɛ–æ. Responses to the F1–F2 shift were larger than responses to the F1 shift regardless of the perturbation magnitude. Additionally, compensatory responses for /hɛd/ were smaller than responses for /hɛp/ and /hɛk/. Conclusions Overall, these results suggest that the brain uses its error evaluation to determine the extent of compensatory responses. The brain may also consider categorical errors and phonemic environments (e.g., articulatory configurations of the following phoneme) to determine the magnitude of its compensatory responses to auditory errors.
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Suga, N., H. Niwa, I. Taniguchi, and D. Margoliash. "The personalized auditory cortex of the mustached bat: adaptation for echolocation." Journal of Neurophysiology 58, no. 4 (October 1, 1987): 643–54. http://dx.doi.org/10.1152/jn.1987.58.4.643.
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1. In the mustached bat, Pteronotus parnellii, the "resting" frequency of the constant-frequency component of the second harmonic (CF2) of the orientation sound (biosonar signal) is different among individuals within a range from 59.69 to 63.33 kHz. The standard deviation of CF2 resting frequency is 0.091 kHz on the average for individual bats. The male's CF2 resting frequency (61.250 +/- 0.534 kHz, n = 58) is 1.040 kHz lower than the female's (62.290 +/- 0.539 kHz, n = 58) on the average. Females' resting frequencies measured in December are not different from those measured in April when almost all of them are pregnant. Therefore, the orientation sound is sexually dimorphic. 2. In the DSCF (Doppler-shifted CF processing) area of the auditory cortex, tonotopic representation differs among individual bats. The higher the CF2 resting frequency of the bat's own sound, the higher the frequencies represented in the DSCF area of that bat. There is a unique match between the tonotopic representation and the CF2 resting frequency. This match indicates that the auditory cortex is "personalized" for echolocation and that the CF2 resting frequency is like a signature of the orientation sound. 3. If a bat's resting frequency is normalized to 61.00 kHz, the DSCF area overrepresents 60.6-62.3 kHz. The central region of this overrepresented band is 61.1-61.2 kHz. This focal band matches the "reference" frequency to which the CF2 frequency of a Doppler-shifted echo is stabilized by Doppler-shift compensation. 4. Since DSCF neurons are extraordinarily sharply tuned in frequency, the personalization of the auditory cortex or system is not only suited for the detection of wing beats of insects, but also for the reduction of the masking effect on echolocation of consepecific's biosonar signals. 5. Because the orientation sound is sexually dimorphic and the auditory cortex is personalized, the tonotopic representation of the auditory cortex is also sexually dimorphic.
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Casseday, John H., Daphna Ehrlich, and Ellen Covey. "Neural Measurement of Sound Duration: Control by Excitatory-Inhibitory Interactions in the Inferior Colliculus." Journal of Neurophysiology 84, no. 3 (September 1, 2000): 1475–87. http://dx.doi.org/10.1152/jn.2000.84.3.1475.
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In the inferior colliculus (IC) of the big brown bat, a subpopulation of cells (∼35%) are tuned to a narrow range of sound durations. Band-pass tuning for sound duration has not been seen at lower levels of the auditory pathway. Previous work suggests that it arises at the IC through the interaction of sound-evoked, temporally offset, excitatory and inhibitory inputs. To test this hypothesis, we recorded from duration-tuned neurons in the IC and examined duration tuning before and after iontophoretic infusion of antagonists to γ-aminobutyric acid-A (GABAA) (bicuculline) or glycine (strychnine). The criterion for duration tuning was that the neuron's spike count as a function of duration had a peak value at one duration or a range of durations that was ≥2 times the lowest nonzero value at longer durations. Out of 21 units tested with bicuculline, duration tuning was eliminated in 15, broadened in two, and unaltered in four. Out of 10 units tested with strychnine, duration tuning was eliminated in four, broadened in one, and unaltered in five. For units tested with both bicuculline and strychnine, bicuculline had a greater effect on reducing or abolishing duration tuning than did strychnine. Bicuculline and strychnine both produced changes in discharge pattern. There was nearly always a shift from an offset response to an onset response, indicating that in the predrug condition, inhibition arrived simultaneously with excitation or preceded it. There was often an increase in the length of the spike train, indicating that in the predrug condition, inhibition also coincided with later parts of excitation. These findings support two hypotheses. First, duration tuning is created in the IC. Second, although the construction of duration tuning varies in some details among IC neurons, it follows three rules: 1) an excitatory and an inhibitory event are temporally linked to the onset of sound but temporally offset from one another; 2) the duration of some inhibitory event must be linked to the duration of the sound; 3) an excitatory event must be linked to the offset of sound.
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Ritter, Gerson Luis da Silva. "Water velocity estimation using inversion methods." GEOPHYSICS 75, no. 1 (January 2010): U1—U8. http://dx.doi.org/10.1190/1.3280232.
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It is known that the propagation velocity of sound waves in water can vary over time. For a 3D seismic survey, if data are acquired in adjacent lines but at different dates, this implies the same reflection point will be recorded at different times. To take this effect into account in seismic processing, it is necessary to measure the sound velocity in water. I have developed a 3D tomographic method that directly estimates it. It assumes a constant sound velocity for a group of shots belonging to a single sail line. Using a picked water-bottom reflection and an initial depth and velocity model, results good for use in subsequent processing can be obtained by estimating only two parameters: the variation of the propagation velocity and a constant vertical shift of the reflector depth in relation to the initial model. The method was tested with both synthetic and real data. The real data results were validated using two methods. First, I analyzed the histogram of the residuals of the final updated model. Second, I used a specially modified Kirchhoff migration algorithm to migrate the sea bottom. The main advantages of this method are that it takes into account the sea-bottom dips to estimate the velocities and it can be applied to each sail line separately. Also, the inversion is not ill-conditioned provided that data with large enough offsets are used. As a result, the method is simple to apply.
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Jin, Yuqi, Ezekiel Walker, Tae-Youl Choi, Arup Neogi, and Arkadii Krokhin. "Simultaneous negative reflection and refraction and reverse-incident right-angle collimation of sound in a solid-fluid phononic crystal." Journal of the Acoustical Society of America 151, no. 4 (April 2022): 2723–31. http://dx.doi.org/10.1121/10.0010158.
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The square lattice phononic crystal (PnC) has been used extensively to demonstrate metamaterial effects. Here, positive and negative refraction and reflection are observed simultaneously due to the presence of Umklapp scattering of sound at the surface of PnC and square-like equifrequency contours (EFCs). It is found that a shift in the EFC of the third transmission band away from the center of the Brillouin zone results in an effectively inverted EFC. The overlap of the EFC of the second and third band produce quasimomentum-matching conditions that lead to multi-refringence phenomena from a single incident beam without the introduction of defects into the lattice. Additionally, the coupling of a near-normal incident wave to a propagating almost perpendicular Bloch mode is shown to lead to strong right-angle redirection and collimation of the incident acoustic beam. Each effect is demonstrated both numerically and experimentally for scattering of ultrasound at a 10-period PnC slab in water environment.
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Lawless, Martin S., Michael Giglia, and David Wootton. "Low-cost engineering experimentation laboratory kit designed for at-home project-based learning." Journal of the Acoustical Society of America 151, no. 4 (April 2022): A246. http://dx.doi.org/10.1121/10.0011210.
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During the Spring 2021 semester, the third-year Engineering Experimentation course at the Cooper Union was administered virtually due to the COVID-19 pandemic. The online format presented many challenges to teaching a hands-on, project-based laboratory class. To provide students with the experience of performing real engineering experiments, a low-cost laboratory kit was assembled and sent to each student. The kit included a microcontroller to serve as a data acquisition device, two electret microphones, and electronic components necessary to collect acoustic data. All of the students used this equipment to run a speed of sound laboratory by determining the time an impulsive signal took to travel between the microphones placed a known distance apart. For the final project, two teams of students conducted independent research of acoustic phenomena and further developed low-cost solutions. One team constructed an impedance tube from PVC pipe to measure the absorption characteristics of unknown materials. Normal incidence sound absorption coefficients were calculated for four frequencies by measuring the standing-wave ratio in accordance with ASTM standard C384. The second team built two experimental apparatuses to demonstrate the Doppler Effect. Both at-home Doppler experiments were able to clearly show the shift of the observed frequency of a moving source.
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Wörner, Eckhard, Ch Wild, W. Müller-Sebert, P. Koidl, and A. Bankewitz. "Diamond Loudspeaker Cones for High-End Audio Components." Advances in Science and Technology 48 (October 2006): 142–50. http://dx.doi.org/10.4028/www.scientific.net/ast.48.142.
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Conventional loudspeaker membranes made of metal or synthetic material such as fabric, ceramics or plastics suffer from nonlinearities and cone breakup modes at fairly low audio frequencies. Due to their mass, inertia and limited mechanical stability the speaker membranes made of conventional materials cannot follow the high frequency excitation of the actuating voice-coil. Low sound velocity causes phase shift and sound pressure losses due to interference of adjacent parts of the membrane at audible frequencies. Therefore, loudspeaker engineers are searching for lightweight but extremely rigid materials to develop speaker membranes whose cone resonances are well above the audible range. With its extreme hardness, paired with low density and high velocity of sound, diamond is a highly promising candidate for such applications. We report on the realization of dome shaped CVD diamond membranes by deposition on curved silicon substrates. Domes with diameters between 20 and 65 mm and with a thickness ranging from 50 to 120 μm were prepared. After deposition, the substrate is dissolved and the rim of the diamond dome is cut by laser scribing. Free standing diamond membranes are mounted onto dynamic voice coils and integrated into tweeter and/or midrange driver chassis. Extended tests and optimisations led to loudspeaker systems that show a second and third harmonic distortion behaviour in the important frequency range between 3 to 10 kHz that is reduced by 40% in comparison to already excellent established values obtained with sapphire membranes. Cone resonance frequencies of CVD diamond membranes are increased by a factor of two, as predicted by simulations.
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Saito, Kazuya, and Xianghua Wu. "COMMUNICATIVE FOCUS ON FORM AND SECOND LANGUAGE SUPRASEGMENTAL LEARNING." Studies in Second Language Acquisition 36, no. 4 (May 23, 2014): 647–80. http://dx.doi.org/10.1017/s0272263114000114.
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The current study examined how form-focused instruction (FFI) with and without corrective feedback (CF) as output enhancement facilitated second language (L2) perception of Mandarin tones at both the phonetic and phonological levels by 41 Cantonese learners of Mandarin. Two experimental groups, FFI only and FFI-CF, received a 90-min FFI treatment designed to encourage them to notice and practice the categorical distinctions of Mandarin tones through a range of communicative input and output activities. During these activities, the instructors provided CF only to students in the FFI-CF group by recasting and pushing them to repair their mispronunciations of the target features (i.e., output enhancement). The control group received comparable meaning-oriented instruction without any FFI. The effectiveness of FFI was assessed via a forced-choice identification task with both trained and untrained items for a variety of tonal contrasts in Mandarin (high-level Tone 1 vs. mid-rising Tone 2 vs. high-falling Tone 4). According to statistical comparisons, the FFI-only group attained significant improvement in all lexical and tonal contexts, and such effectiveness was evident particularly in the acquisition of Tone 1 and Tone 4—supposedly the most difficult instances due to their identical phonological status in the learners’ first language, Cantonese. The FFI-CF group, however, demonstrated marginally significant gains only under the trained lexical conditions. The results suggest that FFI promotes learners’ attentional shift from vocabulary to sound learning (generalizable gains in trained and untrained items) and facilitates their access to new phonetic and phonological categories. Yet the relative advantage of adding CF to FFI as output enhancement remains unclear, especially with respect to the less experienced L2 learners in the current study.
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Broden, Thomas F. "Algirdas Julius Greimas: Education, Convictions, Career." Colloquia 33 (December 10, 2014): 14–35. http://dx.doi.org/10.51554/col.2014.29220.
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The publications that Algirdas Julius Greimas (1917–1992) produced from 1943 to 1992 provide a record of his ideas, opinions, and scholarly methodologies. Yet we have much less information and understanding of his early years. This article draws from archival documents, correspondence, published sources, and personal interviews with Greimas and others to describe the formative experiences inside and outside the classroom which had the greatest impact on fashioning his subsequent life of ideas.The essay describes the linguistic and cultural context in which Greimas grew up, indicates the intellectual traditions in which he was trained, and highlights the individuals, methods, authors, and books of his youth which proved particularly significant for him. A narrative relates his education in Lithuania, describes his university studies in 1930s France, and concludes at a time when much of Europe was engulfed in World War II. A discussion then synthesizes the experiences recounted and explores the ways in which they informed the ensuing evolution of his outlook, ideas, and career.Four traditions played a leading role in shaping Greimas’ s development. Lithuania fashioned his character and identity, afforded him a sound humanistic education, inculcated in him traditional European folklore and a poetical spirit, and instilled in him the commitment to help build the nation’s culture and society. The Slavic heritage provided him metaphysical perspectives, exemplified a holistic approach to inquiry, and developed his revolutionary spirit. Germanic cultures furnished him historical perspectives and methodologies, engaged him in fundamental philosophical inquiry, and provided him a method and an ethic for research on language. France inspired in him a second identity, cultivated in him classical and Enlightenment ideals, and moved him with pure poetry. The various traditions nurtured in Greimas productive tensions between fidelity and openness, historicity and universality, and between reason, affect, and sensuality.
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Iftikhar, Aneeza, A. Afaq, Iftikhar Ahmad, Abu Bakar, H. Bushra Munir, Najm ul Aarifeen, and Muhammad Asif. "Computational Study of Ru2TiZ (Z = Si, Ge, Sn) for Structural, Mechanical and Vibrational Properties." Zeitschrift für Naturforschung A 74, no. 6 (June 26, 2019): 545–50. http://dx.doi.org/10.1515/zna-2019-0054.
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AbstractThe structural, mechanical and vibrational properties of Ru2TiZ (Z = Si, Ge, Sn) Full Heusler Alloys (FHAs) are computed using PBE-GGA as an exchange-correlation functional in Kohn–Sham equations. The calculated lattice constants of these alloys in L21 phase deviate from experimental values upto 0.85 % which shows a good agreement between the model and the experiments. These lattice constants are then used to compute the second order elastic constants C11, C12 and C44 with Wien2k-code. Elastic moduli and mechanical parameters are also calculated by these three independent elastic constants. Mechanical parameters Pugh’s and Poisson’s ratio indicate non-brittle nature of these alloys. Furthermore, the Debye temperature where the collective vibrations shift to an independent thermal vibration, longitudinal and transverse sound velocities, melting temperatures, and thermal conductivities are also obtained to investigate the phonon modes of oscillation. These phonon modes confirm the stability of these alloys as there exists no imaginary phonon frequency in the phonon-dispersion curves.
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Lubejko, Susan T., Bertrand Fontaine, Sara E. Soueidan, and Katrina M. MacLeod. "Spike threshold adaptation diversifies neuronal operating modes in the auditory brain stem." Journal of Neurophysiology 122, no. 6 (December 1, 2019): 2576–90. http://dx.doi.org/10.1152/jn.00234.2019.
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Single neurons function along a spectrum of neuronal operating modes whose properties determine how the output firing activity is generated from synaptic input. The auditory brain stem contains a diversity of neurons, from pure coincidence detectors to pure integrators and those with intermediate properties. We investigated how intrinsic spike initiation mechanisms regulate neuronal operating mode in the avian cochlear nucleus. Although the neurons in one division of the avian cochlear nucleus, nucleus magnocellularis, have been studied in depth, the spike threshold dynamics of the tonically firing neurons of a second division of cochlear nucleus, nucleus angularis (NA), remained unexplained. The input-output functions of tonically firing NA neurons were interrogated with directly injected in vivo-like current stimuli during whole cell patch-clamp recordings in vitro. Increasing the amplitude of the noise fluctuations in the current stimulus enhanced the firing rates in one subset of tonically firing neurons (“differentiators”) but not another (“integrators”). We found that spike thresholds showed significantly greater adaptation and variability in the differentiator neurons. A leaky integrate-and-fire neuronal model with an adaptive spike initiation process derived from sodium channel dynamics was fit to the firing responses and could recapitulate >80% of the precise temporal firing across a range of fluctuation and mean current levels. Greater threshold adaptation explained the frequency-current curve changes due to a hyperpolarized shift in the effective adaptation voltage range and longer-lasting threshold adaptation in differentiators. The fine-tuning of the intrinsic properties of different NA neurons suggests they may have specialized roles in spectrotemporal processing. NEW & NOTEWORTHY Avian cochlear nucleus angularis (NA) neurons are responsible for encoding sound intensity for sound localization and spectrotemporal processing. An adaptive spike threshold mechanism fine-tunes a subset of repetitive-spiking neurons in NA to confer coincidence detector-like properties. A model based on sodium channel inactivation properties reproduced the activity via a hyperpolarized shift in adaptation conferring fluctuation sensitivity.
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Garbes, Laura. "Anti-Colonial Struggles on Air." Resonance 2, no. 4 (2021): 604–22. http://dx.doi.org/10.1525/res.2021.2.4.604.
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Indigenous activists globally have used radio broadcast to directly challenge authority within colonial regimes. How has this use of sound by Indigenous activists advanced anti-colonial struggles? I analyze how Indigenous social actors use the medium of broadcast to draw sound into the social practice of anti-colonial struggle. I use two historical examples of anti-colonial radio programming: The Voice of Free Algeria, a program broadcast during the Algerian War for Independence from 1954 to 1962, and Radio Free Alcatraz, a program broadcast during the Indigenous-led occupation of the island of Alcatraz off the coast of California from 1969 to 1971. I find that in both anti-colonial struggles, the broadcasting process disrupted the colonial soundscape in three main ways. First, in recentering Indigenous voices as protagonists, the broadcasts decentered the dominant narrative of colonial powers. This perspectival shift threatened the existing order of non-Indigenous residents as the authorial voice. Second, in circumventing the state to air these two programs, the broadcasters rejected state authority to define and restrict Indigenous voices. Third, in conspiring with non-Indigenous outsiders to air the programs, the practice of broadcasting Indigenous voices contributed to a broader movement-building process. This collaboration involved non-Indigenous and settler actors in anti-colonial struggle. By using a socio-sonic, production-oriented analysis as the framework for understanding Indigenous soundwork, we can better identify related mechanisms across anti-colonial struggles.
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Ragaur, Sandhya. "CHANGING CUSTOMER INTENTIONS AND BUYING BEHAVIOUR FOR SECOND-HAND GOODS IN EMERGING ECONOMIES – A WAY FORWARD TO SUSTAINABILITY POST-PANDEMIC." International Journal of Research -GRANTHAALAYAH 10, no. 8 (September 16, 2022): 131–38. http://dx.doi.org/10.29121/granthaalayah.v10.i8.2022.4759.
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Purpose: With the recent development in technology, the market of second-hand goods has widened to online platforms, which has provided consumers with more choices. This research paper examines the various factors that influence the buying decision of consumers for second-hand goods and how a shift from offline to online platforms has added to more sustainable growth in this sector. The study has analyzed how brand, price, risk, etc. influence the customer's buying behavior for second-hand goods.Methodology/approach: For this purpose, a Conjoint Analysis statistical technique is used to prepare the questionnaire for the survey to determine how consumers value different attributes (features, benefits, functions) to an individual product or service. The objective behind using conjoint analysis is to understand what combinations of a limited number of attributes, influence the most to customers.Findings: For the purpose of research survey was conducted on 100 people to understand their changing behavior towards second-hand goods and factors they keep in mind while purchasing the same. The study has found that around 78% of consumers prefer to buy branded second-hand products and between price and quality, they are more favorable towards cost-benefit. The study also revealed that consumers are shifting from offline to online markets as it helps them in cost-cutting and saving time. With increased preference for secondhand goods, long-term environmental sustainability can also be ensured to reduce wastage.Practical implications: This study can help the second-hand goods industry like e-bay, 2-good and other online platforms in formulating different strategies to maximize the sales of second-hand goods and in decision making while making various strategies. As this study is focused on understanding consumer intention, this will help the management in building a sound consumer base.Originality/Value: Though various research has been done related to the second-hand goods market, understanding the consumer’s willingness to pay and the perceived quality of the product has not been studied intensively. Also, sustainability and second-hand goods have not been researched thoroughly.
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Kin, Maurycy J., and Andrzej Dobrucki. "Perception of Changes in Spectrum and Envelope of Musical Signals vs Auditory Fatigue." Archives of Acoustics 41, no. 2 (June 1, 2016): 323–30. http://dx.doi.org/10.1515/aoa-2016-0033.
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AbstractThe paper presents results of research on an influence of listening fatigue on the detection of changes in spectrum and envelope of musical samples. The experiment was carried out under conditions which normally exist in a studio or on the stage when sound material is recorded and/or mixed. The equivalent level of presented sound samples is usually 90 dB and this is an average value of sound level existing in control room at various recording activities. Such musical material may be treated as a noise so Temporary Threshold Shift phenomenon may occur after several sessions and this may lead to a listening fatigue effect. Fourteen subjects participated in the first part of the experiment and all of them have the normal hearing thresholds. The stimuli contained the musical material with introduced changes in sound spectrum up to ±6 dB in low (100 Hz), middle (1 kHz) and high frequency (10 kHz) octave bands. In the second part of research five subjects listened to musical samples with introduced envelope changes up to ±6 dB in interval of 1 s. The time of loud music exposure was 60, 90 and 120 minutes and this material was completely different from the tested samples. It turned out that listening to the music with an Leq= 90 dB for 1 hour influences the hearing thresholds for middle frequency region (about 1-2 kHz) and this has been reflected in a perception of spectral changes. The perceived peaks/notches of 3 dB have the detection ability at 70% and the changes of low and high ranges of spectrum were perceived at the similar level. After the longer exposure, the thresholds shifted up to 4.5 dB for the all investigated stimuli. It has been also found that hearing fatigue after 1 hour of a listening influences the perception of envelope which gets worse of 2 dB in comparison to the fresh-ear listening. When time of listening to the loud music increases, the changes in envelopes which can be detected rise to the value of 6 dB after 90-minutes exposure and it does not increase with further prolongation of listening time.
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Salarvand, Hamid, Ali Reza Shateri, Afshin Ahmadi Nadooshan, and Iman Karimipour. "Numerical study of the effect of the corrugated baffle on the acoustic characteristics of the combustion chamber." Acta Acustica 6 (2022): 33. http://dx.doi.org/10.1051/aacus/2022031.
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Combustion instability caused by the amplification of sound waves is called acoustic or high-frequency instability, which can cause severe damage to the system. Adding baffles is one of the methods of passive instability control. Depending on the geometry of the chamber and the type of application, different baffles are used. In this research, the effect of the longitudinal corrugated baffle on the acoustic characteristics of the combustion chamber is investigated numerically. The quality of each baffle configuration is determined by examining their influence on the essential parameters such as natural frequency shift and damping factor. Modal and harmonic analyses for the acoustic field are conducted to investigate the effect of baffles installed in the combustion chamber. According to the obtained results, the addition of baffle shifts resonant frequencies. In other words, a combustor with baffles is more effective in controlling the instabilities than that without baffles. In addition, it increases the damping factor in the first–second circumferential (tangential) modes, making the system more stable. Also, a quantitative assessment of the acoustics by adding baffles shows that combustion chamber finds a better condition from stability point of view, and the bandwidth increase affects the combustion stability.
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Di Luca, Massimiliano. "Time and time again: Temporal influences of repeated stimuli." Seeing and Perceiving 25 (2012): 10. http://dx.doi.org/10.1163/187847612x646334.
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Temporal perception does not always correspond to objective time. Several factors contribute to distort perceived timing of stimuli. This work investigates the effect of repeated stimulus presentation (either a sound or a light) on perceived timing of a subsequent audiovisual pair. At the beginning of each trial, a series of sounds or lights is presented with a constant interval. One final stimulus is presented either rhythmically or with a temporal shift. In a psychophysical task, participants judged whether the last stimulus in the sequence is presented before or after a temporal probe in the other modality. Results indicate two types of effects. First, the last stimulus of the sequence appears to be delayed with respect to the probe in the other modality. Second, deviations from regular rhythm tend to be perceptually compensated. Overall, perceived stimulus timing is shown to be affected by the temporal context, and the effect is consistent with a change in perceptual latency. The change depends on the modality of the repeated stimulus and can be explained as a combined effect of an temporal adaptation (i.e., slowing down perception) plus a temporal expectation acting on the slightly arrhythmic stimuli.
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Xi, Jinxiang, Mohamed Talaat, Xiuhua Si, and Haibo Dong. "Flow Dynamics and Acoustics from Glottal Vibrations at Different Frequencies." Acoustics 4, no. 4 (October 28, 2022): 915–33. http://dx.doi.org/10.3390/acoustics4040056.
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Glottal vibration is fundamental to breathing-related disorders and respiratory sound generation. However, responses of the flow and acoustics to glottal vibrations of different frequencies are unclear. The objective of this study is to numerically evaluate the influences of glottal vibration frequencies on inspiratory airflow dynamics and flow-induced sound signals; this is different from normal phonation that is driven by controlled expiratory flows. A computational model was developed that comprised an image-based mouth–throat–lung model and a dynamic glottis expanding/contracting following a sinusoidal waveform. Large Eddy simulations were used to solve the temporal and spatial flow evolutions, and pressure signals were analyzed using different transform algorithms (wavelet, Hilbert, Fourier, etc.). Results show that glottal vibrations significantly altered the flows in the glottis and trachea, especially at high frequencies. With increasing vibration frequencies, the vortices decreased in scale and moved from the main flow to the walls. Phase shifts occurred between the glottis motion and glottal flow rates for all frequencies considered. Due to this phase shift, the pressure forces resisted the glottal motion in the first half of contraction/expansion and assisted the glottal motion in the second half of contraction/expansion. The magnitude of the glottal flow fluctuation was approximately linear with the vibration frequency (~f0), while the normal pressure force increased nonlinearly with the frequency (~f01.85). Instantaneous pressure signals were irregular at low vibration frequencies (10 and 20 Hz) but became more regular with increasing frequencies in the pressure profile, periodicity, and wavelet-transformed parameters. The acoustic characteristics specific to the glottal vibration frequency were explored in temporal and frequency domains, which may be used individually or as a combination in diagnosing vocal fold dysfunction, snoring, sleep apnea, or other breathing-related diseases.
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Carr, Carrie M., John I. Lane, Larry J. Eckel, Felix E. Diehn, Dave F. Kallmes, Matthew L. Carlson, Yunhong Shu, Matt A. Bernstein, Tina M. Gunderson, and Gayla L. Poling. "Evaluation of hearing loss in young adults after exposure to 3.0T MRI with standard hearing protection." Journal of the Acoustical Society of America 151, no. 3 (March 2022): 1913–21. http://dx.doi.org/10.1121/10.0009824.
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Standard clinical protocols require hearing protection during magnetic resonance imaging (MRI) for patient safety. This investigation prospectively evaluated the auditory function impact of acoustic noise exposure during a 3.0T MRI in healthy adults. Twenty-nine participants with normal hearing underwent a comprehensive audiologic assessment before and immediately following a clinically indicated head MRI. Appropriate hearing protection with earplugs (and pads) was used per standard of practice. To characterize noise hazards, current sound monitoring tools were used to measure levels of pulse sequences measured. A third audiologic test was performed if a significant threshold shift (STS) was identified at the second test, within 30 days post MRI. Some sequences produced high levels (up to 114.5 dBA; 129 dB peak SPL) that required hearing protection but did not exceed 100% daily noise dose. One participant exhibited an STS in the frequency region most highly associated with noise-induced hearing loss. No participants experienced OSHA-defined STS in either ear. Overall, OAE measures did not show evidence of changes in cochlear function after MRI. In conclusion, hearing threshold shifts associated with hearing loss or OAE level shifts reflecting underlying cochlear damage were not detected in any of the 3.0T MRI study participants who used the current recommended hearing protection.
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Leijen, Daan, and Anton Lorenzen. "Tail Recursion Modulo Context: An Equational Approach." Proceedings of the ACM on Programming Languages 7, POPL (January 9, 2023): 1152–81. http://dx.doi.org/10.1145/3571233.
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The tail-recursion modulo cons transformation can rewrite functions that are not quite tail-recursive into a tail-recursive form that can be executed efficiently. In this article we generalize tail recursion modulo cons (TRMc) to modulo contexts (TRMC), and calculate a general TRMC algorithm from its specification. We can instantiate our general algorithm by providing an implementation of application and composition on abstract contexts, and showing that our context laws_ hold. We provide some known instantiations of TRMC, namely modulo evaluation contexts (CPS), and associative operations , and further instantiantions not so commonly associated with TRMC, such as defunctionalized evaluation contexts, monoids , semirings , exponents , and cons products . We study the modulo cons instantiation in particular and prove that an instantiation using Minamide’s hole calculus is sound. We also calculate a second instantiation in terms of the Perceus heap semantics to precisely reason about the soundness of in-place update. While all previous approaches to TRMc fail in the presence of non-linear control (for example induced by call/cc, shift/reset or algebraic effect handlers), we can elegantly extend the heap semantics to a hybrid approach which dynamically adapts to non-linear control flow. We have a full implementation of hybrid TRMc in the Koka language and our benchmark shows the TRMc transformed functions are always as fast or faster than using manual alternatives.
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Goodland, Robert J. A., Herman E. Daly, and Salah El Serafy. "The Urgent Need for Rapid Transition to Global Environmental Sustainability." Environmental Conservation 20, no. 4 (1993): 297–309. http://dx.doi.org/10.1017/s0376892900023481.
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This paper outlines the concept of environmental sustain-ability (ES), shows why it is important to make it a top-priority goal, and why that will be difficult to attain but essential. The ES equation of impact = population × affluence × technology, is outlined. When the world approaches stability in both population size and the throughput of energy and materials per unit of production, we may indeed be approaching sustainability. As the world's population is apt to double every 40 years, and as only a few countries (e.g. Japan and Sweden) have managed so far to reduce the energy intensity of production, we are hurtling away from sustainability rather than even approaching it. Environmental sustainability can be approached by implementing four priorities: first, by using sound microeconomic means; second, by using sound macroeconomics to differentiate between use and liquidation of natural capital by means of environmental accounting; third, by using environmental assessment to incorporate environmental costs into project appraisal; and fourth—until the first three become fully achieved—by following operational guidelines for sustainability. Thus:1) Sound Microeconomic Means involve: (1) Getting the prices right: to reflect full social marginal opportunity cost; use the ‘full cost’ principle, or the ‘cradle-to-grave’ approach. (2) Repealing perverse fiscal incentives. (3) Strengthening the ‘polluter pays’ principles. (4) Including non-monetary values in project justification. (5) Adopting the transparency principle that markets can function efficiently only if relevant information is available at low cost. This involves the participation of people in decisions affecting them, and advertising who is polluting what and by how much.2) Sound Macroeconomics by Environmental Accounting is essential to discern decapitalization and to shift to using income rather than drawing down capital assets. Environmental accounting clarifies what is liquidation of natural capital from what is income. This is essential because decapitalization is frequently confused as income. Environmental accounting warns us when liquidation of potentially renewable resources exceeds their regeneration rates, such as in many forests.3) Environmental Assessment is part of the project selection process. The purpose of EA is to ensure that the development options under consideration are environmentally sustainable. Any environmental consequences should be addressed in project selection, planning, siting, and design. EAs identify ways of preventing, minimizing, mitigating, or compensating for, adverse impacts.4) Sustainability Guidelines: Until the first three rules are heeded and duly acted on, the following guidelines will be necessary: 1, Output Rule:—waste emissions from a project should be within the assimilative capacity of the local environment to absorb without unacceptable de-gradation of its future waste-absorptive capacity; and 2, Input Guide:—harvest rates or renewable resource inputs should be within regenerative capacity of the natural system that generates them. Depletion rates of non-renewable resource inputs should not exceed the rate at which renewable substitutes are developed by human invention and investment.