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  • Comparative Studies. Non-European Languages/Literatures  (19)
  • 1
    Online Resource
    Online Resource
    Numerical study of biosonar beam forming in finless porpoise ( Neophocaena asiaeorientalis )
    Acoustical Society of America (ASA) ; 2014
    In:  The Journal of the Acoustical Society of America Vol. 136, No. 4_Supplement ( 2014-10-01), p. 2075-2075
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 136, No. 4_Supplement ( 2014-10-01), p. 2075-2075
    Abstract: Finless porpoise (Neophocaena asiaeorientalis) is known to use the narrow band signals for echolocation living in the Yangtze River and in the adjoining Poyang and Dongting Lakes in China. In this study, the sound velocity and density of different tissues (including melon, muscle, bony structure, connective tissues, blubber, and mandibular fat) in the porpoise’s head were obtained by measurement. The sound velocity and density were found out to have a linear relationship with Hounsfield unit (HU) obtained from the CT scan. The acoustic property of the head of the porpoise was reconstructed from the HU distribution. Numerical simulations of the acoustic propagation through finless porpoise’s head were performed by a finite element approach. The beam formation was compared with those of the baiji, Indo-pacific humpback dolphin, and bottlenose dolphin. The role of the different structures in the head such as air sacs, melon, muscle, bony structure, connective tissues, blubber, and mandibular fat on biosonar beam was investigated. The results might provide useful information for better understanding of the sound propagation in finless porpoise’s head.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4899449
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2014
    detail.hit.zdb_id: 1461063-2
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  • 2
    Online Resource
    Online Resource
    Written corrective feedback practices of an experienced ESL primary teacher: An ecological perspective
    Wiley ; 2020
    In:  TESOL Journal Vol. 11, No. 3 ( 2020-09)
    Details
    In: TESOL Journal, Wiley, Vol. 11, No. 3 ( 2020-09)
    Type of Medium: Online Resource
    ISSN: 1056-7941 , 1949-3533
    URL: Issue
    URL: Article
    DOI: 10.1002/tesj.v11.3
    DOI: 10.1002/tesj.509
    RVK:
    EQ 1000
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 2548108-3
    SSG: 5,3
    SSG: 7,24
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  • 3
    Online Resource
    Online Resource
    The condition for beam-bending modes to dominate in the vibro-acoustic behavior of a circular cylindrical shell
    Acoustical Society of America (ASA) ; 1998
    In:  The Journal of the Acoustical Society of America Vol. 103, No. 5_Supplement ( 1998-05-01), p. 3055-3055
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 103, No. 5_Supplement ( 1998-05-01), p. 3055-3055
    Abstract: The acoustic radiation from circular cylindrical shells is of fundamental and applied interest primarily because cylindrical shells are widely used in industries. However, according to previous studies, only a few special cases, for example, a cylindrical shell under the assumption of beam bending, can be solved analytically. Obviously, in practice, the vibration behavior of a cylindrical shell may not be assumed to be beam bending in the whole frequency range of interest. This is because the vibration behavior of a cylindrical shell changes with frequency. Therefore, it is important to determine the condition under which a circular cylindrical shell would behave like beam bending so that the analytical solution could be used correctly. In this paper, an analysis of the basic vibration behavior of circular cylindrical shells using the Love’s equations shows that for an infinite length cylindrical shell, the beam-bending wave would always be propagating with other flexural waves of different circumferential mode numbers. However, for a finite-length circular cylindrical shell, below the cutoff frequency of n=2 mode, beam-bending modes would dominate the vibration response so that it can be treated as a beam with reasonable accuracy. This analytical result is supported by calculations obtained using the boundary element method.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.422666
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 1998
    detail.hit.zdb_id: 1461063-2
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  • 4
    Online Resource
    Online Resource
    Surface vibration and nearby cavitation of an ex vivo bovine femur exposed to high intensity focused ultrasound
    Acoustical Society of America (ASA) ; 2013
    In:  The Journal of the Acoustical Society of America Vol. 134, No. 2 ( 2013-08-01), p. 1656-1662
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 134, No. 2 ( 2013-08-01), p. 1656-1662
    Abstract: The acoustic pressure distribution, thermal ablation, and sonochemiluminescence (SCL) generated by cavitation near the surface of an ex vivo bovine femur were investigated at normal and oblique incidences of high intensity focused ultrasound (HIFU), as were the characteristics of bone surface vibrations. The acoustic pressure at the HIFU focus, the width of thermal ablation, and the SCL intensity in the pre-focal region were 1.3 MPa, 7 mm, and 454 electrons, respectively, in the control group at normal incidence, and they respectively increased to 1.5 MPa, 12 mm and 968 electrons in the presence of the bone. At oblique incidence from the left, the acoustic pressure at 3 mm to the right of the HIFU focus was 0.6 MPa and decreased to 0.4 MPa at 3 mm to the left of the focus. The thermal ablation was 20 mm in width and extended along the front surface of the bone to the right of the HIFU focus. The SCL intensity on the right of the HIFU focus was 394 electrons and was 362 electrons on the left. The presence of bone would directionally change the spatial distribution of acoustic pressure, thermal and cavitation effects for oblique incidence of HIFU.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4812891
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2013
    detail.hit.zdb_id: 1461063-2
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  • 5
    Online Resource
    Online Resource
    Forced sound transmission through a finite-sized single leaf panel subject to a point source excitation
    Acoustical Society of America (ASA) ; 2018
    In:  The Journal of the Acoustical Society of America Vol. 143, No. 3 ( 2018-03-01), p. 1567-1577
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 143, No. 3 ( 2018-03-01), p. 1567-1577
    Abstract: In the case of a point source in front of a panel, the wavefront of the incident wave is spherical. This paper discusses spherical sound waves transmitting through a finite sized panel. The forced sound transmission performance that predominates in the frequency range below the coincidence frequency is the focus. Given the point source located along the centerline of the panel, forced sound transmission coefficient is derived through introducing the sound radiation impedance for spherical incident waves. It is found that in addition to the panel mass, forced sound transmission loss also depends on the distance from the source to the panel as determined by the radiation impedance. Unlike the case of plane incident waves, sound transmission performance of a finite sized panel does not necessarily converge to that of an infinite panel, especially when the source is away from the panel. For practical applications, the normal incidence sound transmission loss expression of plane incident waves can be used if the distance between the source and panel d and the panel surface area S satisfy d/S & gt;0.5. When d/S ≈0.1, the diffuse field sound transmission loss expression may be a good approximation. An empirical expression for d/S=0  is also given.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.5027248
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2018
    detail.hit.zdb_id: 1461063-2
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  • 6
    Online Resource
    Online Resource
    Modal sound transmission loss of a single leaf panel: Asymptotic solutions
    Acoustical Society of America (ASA) ; 2015
    In:  The Journal of the Acoustical Society of America Vol. 138, No. 6 ( 2015-12-01), p. 3964-3975
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 138, No. 6 ( 2015-12-01), p. 3964-3975
    Abstract: In a previously published paper [C. Wang, J. Acoust. Soc. Am. 137(6), 3514–3522 (2015)], the modal sound transmission coefficients of a single leaf panel were discussed with regard to the inter-modal coupling effects. By incorporating such effect into the equivalent modal radiation impedance, which is directly related to the modal sound transmission coefficient of each mode, the overall sound transmission loss for both normal and randomized sound incidences was computed through a simple modal superposition. Benefiting from the analytical expressions of the equivalent modal impedance and modal transmission coefficients, in this paper, behaviors of modal sound transmission coefficients in several typical frequency ranges are discussed in detail. Asymptotic solutions are also given for the panels with relatively low bending stiffnesses, for which the sound transmission loss has been assumed to follow the mass law of a limp panel. Results are also compared to numerical analysis and the renowned mass law theories.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4938222
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2015
    detail.hit.zdb_id: 1461063-2
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  • 7
    Online Resource
    Online Resource
    Speech privacy in open-plan offices. I. Systematic measurements
    Acoustical Society of America (ASA) ; 2001
    In:  The Journal of the Acoustical Society of America Vol. 109, No. 5_Supplement ( 2001-05-01), p. 2479-2479
    Details
    In: The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 109, No. 5_Supplement ( 2001-05-01), p. 2479-2479
    Abstract: This work reports the results of a systematic series of measurements of speech propagation between workstations in a conventional open-plan office. The propagation measurements were repeated as the parameters describing the open-office configuration were systematically changed. The values of the following were varied: workstation panel height, panel absorption, workstation plan size, ceiling height, and ceiling absorption. In addition the effects of the location and type of ceiling light fixtures were investigated as well as details of the workstation furnishings and configuration. The results are evaluated in terms of Speech Intelligibility Index values, SII (ANSI S3.5 1997). The SII is a new version of the articulation index and is a weighted speech-to-noise ratio that is a good measure of the expected speech privacy. The height of the partial height panels separating workstations and the absorption of the ceiling have the most important effects on speech privacy. Workstation size, panel absorption, and lighting configuration have intermediate effects on speech privacy. Ceiling height and workstation configuration had smaller effects on expected speech privacy.
    Type of Medium: Online Resource
    ISSN: 0001-4966 , 1520-8524
    URL: Article
    DOI: 10.1121/1.4744809
    RVK:
    EQ 1000
    Language: English
    Publisher: Acoustical Society of America (ASA)
    Publication Date: 2001
    detail.hit.zdb_id: 1461063-2
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  • 8
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    Online Resource
    A Primer on Qualitative Research Synthesis in TESOL
    Wiley ; 2021
    In:  TESOL Quarterly Vol. 55, No. 3 ( 2021-09), p. 1024-1034
    Details
    In: TESOL Quarterly, Wiley, Vol. 55, No. 3 ( 2021-09), p. 1024-1034
    Abstract: Secondary research in the form of literature reviews facilitates consolidation and transfer of knowledge. In the field of TESOL, the majority of secondary research is conducted in the form of narrative reviews, which rely on the researchers' selection and interpretation of primary studies and findings. Systematic reviews, which can be broadly categorized into meta‐analysis (focusing on quantitative data) and qualitative research synthesis (focusing on qualitative data), are gaining popularity (see Plonsky, 2017) but are still less common. In particular, qualitative data collected from language classrooms, which are often criticized because of their lack of generalizability, are seldom synthesized in a systematic fashion. Against this backdrop, this article first attempts to make a case for conducting qualitative research synthesis in the field of TESOL. Second, this article provides a methodological framework and an example of how qualitative research synthesis can be conducted. The article closes with recommendations to promote qualitative research synthesis in the field of TESOL.
    Type of Medium: Online Resource
    ISSN: 0039-8322 , 1545-7249
    URL: Issue
    URL: Article
    DOI: 10.1002/tesq.v55.3
    DOI: 10.1002/tesq.3030
    RVK:
    EQ 1000
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2115547-1
    SSG: 5,3
    SSG: 7,24
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  • 9
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    Online Resource
    An Ecological Perspective on Classroom‐Based Assessment
    Wiley ; 2023
    In:  TESOL Quarterly
    Details
    In: TESOL Quarterly, Wiley
    Abstract: Classroom‐based assessment (CBA) takes place in learning environments influenced by myriad individual and contextual factors. Nevertheless, factors related to individual differences and learner psychology are seldom considered in creating instructional environments designed to facilitate learners' use of CBA. This article introduces the concept of language assessment ecology ( LAE )—a dynamic classroom environment where learners' needs are addressed through deliberate and informed orchestration of a language learning environment so that learners can make effective use of assessment for their learning. Informed by Ecological Systems Theory, we postulate that LAE is a multi‐layered system, where learners' engagement with CBA is an outcome of alignment between learning contexts and learners' cognitive‐psychological needs. At the outset of this article, we provide a review of current CBA frameworks to underscore the merits of LAE. Contextual and learner variables that need to be considered in an LAE are then identified and discussed. From a complex dynamic systems perspective, the versatility and complexity of the interplay among these variables will be stressed. The article concludes with the implications of LAE for conducting CBA research.
    Type of Medium: Online Resource
    ISSN: 0039-8322 , 1545-7249
    URL: Article
    DOI: 10.1002/tesq.3201
    RVK:
    EQ 1000
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2115547-1
    SSG: 5,3
    SSG: 7,24
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  • 10
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    Online Resource
    A methodological review of qualitative research syntheses in CALL: The state-of-the-art
    Elsevier BV ; 2021
    In:  System Vol. 103 ( 2021-12), p. 102646-
    Details
    In: System, Elsevier BV, Vol. 103 ( 2021-12), p. 102646-
    Type of Medium: Online Resource
    ISSN: 0346-251X
    URL: Article
    DOI: 10.1016/j.system.2021.102646
    RVK:
    EQ 1000
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2021
    detail.hit.zdb_id: 1500775-3
    detail.hit.zdb_id: 189289-7
    SSG: 7,11
    SSG: 5,3
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