473 research outputs found
Rationalisation of the Tsai-Wu failure criterion
No full textThe objective of this paper is to rationalise the empirical aspect of the Tsai-Wu failure criterion associated with the determination of the interactive strength property F12 based on the analytical geometry according to which the condition of closed failure envelope cannot be satisfied by all unidirectionally fibre reinforced composites (UD) and hence should be abandoned. Depending on the way the failure envelope opens, UD composites can be classified into two categories. (a) F12 can be determined uniquely using the conventional strength properties with an additional assumption that the material exhibit very high or infinite strength under triaxial compression at a specific stress ratio; or (b) The Tsai-Wu criterion lead to one of the two scenarios: either allowing infinite strength for an in-plane stress state or to allow infinite strength under infinite number of triaxial stress ratios, some involving tension along fibres. The rationalisation supplements the existing understanding with generic facts which have hitherto not been revealed. The validity of the new assumption can only be proven by experiments which are scarce. A call for relevant experimental data is generated though this paper in order to assess the likelihood of very high or infinite strength.</p
The Tsai-Wu failure criterion rationalised in the context of UD composites
No full textThis paper is to rationalise the empirical aspect of the Tsai-Wu failure criterion in the context of UD composites associated with the determination of the interactive strength property F12 based on the analytic geometry. It reveals that the condition of closed failure envelope cannot be satisfied by all UD composites and hence the restriction should be abandoned. Depending on the way the failure envelope opens, UD composites can be classified into two categories. (a) F12 can be determined uniquely using the conventional strength properties with an additional assumption that the material exhibits very high or infinite strength under triaxial compression at a specific stress ratio; or (b) The Tsai-Wu criterion leads to one of the two scenarios: either allowing infinite strength for an in-plane stress state or allowing infinite strength under triaxial stresses involving tension along fibres
sj-docx-1-crj-10.1177_17488958221146144 – Supplemental material for Telecommunication and cyber fraud victimization among Chinese college students: An application of routine activity theory
No full textSupplemental material, sj-docx-1-crj-10.1177_17488958221146144 for Telecommunication and cyber fraud victimization among Chinese college students: An application of routine activity theory by Kai Lin, Yuning Wu, Ivan Y Sun and Jia Qu in Criminology & Criminal Justice</p
Arab Americans’ confidence in the police has been stable and favorable over the past decade
No full textIn the wake of the September 11 terrorist attacks nearly 14 years ago, Arab Americans came under heightened suspicion and greater counter-terrorism surveillance. Has this changing relationship with law enforcement affected Arab Americans’ levels of confidence in the police? In new study which looks at attitudes of Arab Americans in Detroit, Ivan Sun & Yuning Wu find that their attitudes towards police have been mostly unchanged, with more than 40 percent expressing a ‘great deal’ or ‘a lot’ of confidence in the police. They argue that local police departments’ efforts to establish solid rapport with Arab communities may have contributed to maintaining these high levels, and illustrate the importance of building these types of links in order to establish and maintain public confidence in policing
Author Correction: A shared neural basis underlying psychiatric comorbidity
No full textCorrection to: Nature Medicine. Published online 24 April 2023. In the version of this article initially published, the STRATIFY data also included cohort data from the ESTRA consortium, though this was not acknowledged in the author list and the section in Methods on the Stratify dataset. The Methods are now updated, and the author list is amended to combine the STRATIFY and ESTRA consortium names and to include the following authors: Marina Bobou, M. John Broulidakis, Betteke Maria van Noort, Zuo Zhang, Lauren Robinson, Nilakshi Vaidya, Jeanne Winterer, Yuning Zhang, Sinead King, Hervé Lemaître, Ulrike Schmidt, Julia Sinclair, Argyris Stringaris and Sylvane Desrivières. The STRATIFY and ESTRA consortia are now combined to list Marina Bobou, M. John Broulidakis, Betteke Maria van Noort, Zuo Zhang, Lauren Robinson, Nilakshi Vaidya, Jeanne Winterer, Yuning Zhang, Sinead King, Gareth J. Barker, Arun L. W. Bokde, Hervé Lemaître, Frauke Nees, Dimitri Papadopoulos Orfanos, Ulrike Schmidt, Julia Sinclair, Argyris Stringaris, Henrik Walter, Robert Whelan, Sylvane Desrivières and Gunter Schumann as members, and the IMAGEN consortium is updated to also include Sylvane Desrivières. Affiliations, author contributions and acknowledgements have been updated to reflect the new authorship, and all changes have been made in the HTML and PDF versions of the article
Author Correction: A shared neural basis underlying psychiatric comorbidity
No full textCorrection to: Nature Medicine https://doi.org/10.1038/s41591-023-02317-4. Published online 24 April 2023. In the version of this article initially published, the STRATIFY data also included cohort data from the ESTRA consortium, though this was not acknowledged in the author list and the section in Methods on the Stratify dataset. The Methods are now updated, and the author list is amended to combine the STRATIFY and ESTRA consortium names and to include the following authors: Marina Bobou, M. John Broulidakis, Betteke Maria van Noort, Zuo Zhang, Lauren Robinson, Nilakshi Vaidya, Jeanne Winterer, Yuning Zhang, Sinead King, Hervé Lemaître, Ulrike Schmidt, Julia Sinclair, Argyris Stringaris and Sylvane Desrivières. The STRATIFY and ESTRA consortia are now combined to list Marina Bobou, M. John Broulidakis, Betteke Maria van Noort, Zuo Zhang, Lauren Robinson, Nilakshi Vaidya, Jeanne Winterer, Yuning Zhang, Sinead King, Gareth J. Barker, Arun L. W. Bokde, Hervé Lemaître, Frauke Nees, Dimitri Papadopoulos Orfanos, Ulrike Schmidt, Julia Sinclair, Argyris Stringaris, Henrik Walter, Robert Whelan, Sylvane Desrivières and Gunter Schumann as members, and the IMAGEN consortium is updated to also include Sylvane Desrivières. Affiliations, author contributions and acknowledgements have been updated to reflect the new authorship, and all changes have been made in the HTML and PDF versions of the article.</p
From the headwater to the delta: A synthesis of the basin-scale sediment load regime in the Changjiang River
No full textMany large rivers in the world delivers decreasing sediment loads to coastal oceans owing to reductions in sediment yield and disrupted sediment deliver. Understanding the sediment load regime is a prerequisite of sediment management and fluvial and deltaic ecosystem restoration. This work examines sediment load changes across the Changjiang River basin based on a long time series (1950–2017) of sediment load data stretching from the headwater to the delta. We find that the sediment loads have decreased progressively throughout the basin at multiple time scales. The sediment loads have decreased by ~96% and ~74% at the outlets of the upper basin and entire basin, respectively, in 2006–2017 compared to 1950–1985. The hydropower dams in the mainstem have become a dominant cause of the reduction, although downstream channel erosion causes moderate sediment load recovery. The basin-scale sediment connectivity has declined as the upper river is progressively dammed, the middle-lower river is leveed and river-lake interplay weakens. The middle-lower river has changed from a slight depositional to a severe erosional environment, from a sediment transport conduit to a new sediment source zone, and from a transport-limited to a supply-limited condition. These low-level sediment loads will likely persist in the future considering the cumulative dam trapping and depleted channel erosion. As a result, substantial hydro-morphological changes have occurred that affect the water supply, flood mitigation, and the aquatic ecosystem. The findings and lessons in this work can shed light on other large river systems subject to intensified human interference.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Coastal Engineerin
Rezension/Review/Mapitio: Yuning Shen. 2018. Transitivität und Verbvalenz im Swahili. [Transitivity and Verb Valence in Swahili/Uelekezi na Mpangilio wa Vitenzi katika Lugha ya Kiswahili]. Köln: Rüdiger Köppe, 104 pp., ISBN 978-3-89645-712-7.
No full textYuning Shen’s study deals with transitivity and verb valency in Kiswahili using a corpus-based approach. The author relates the methods used and results with previous studies dealing with the same topic, namely Whiteley (1968), Abdulaziz (1996) and Olejarnik (2005). He uses the meta-function-rank-matrix (MF/R) from Chinese to point out the fallacy of adopting such a matrix from one language and imposing it on another. Using the parts of speech annotation TreeTagger (Schmid 1994, 1995) to examine previous verb classifications, the author discusses the divergent use of concepts such as verb radicals, verb stems and verb bases as used in different theoretical approaches.Kitabu hiki cha Yuning Shen kinahusu uelekezi na mpangilio wa vitenzi katika lugha ya Kiswahili kwa kutumia mkabala wenye msingi wa kopasi ya kiisimu. Mwandishi anazihusisha mbinu zilizotumika na matokeo yake na kazi za utafiti zilizotangulia zilizoshughulikia mada hiyo yaani Whiteley (1968), Abdulaziz (1996), na Olejarnik (2005). Shen anatumia mkabala wa mpangilio wa viwango tofauti vya matumizi ya lugha (meta-function-rank-matrix, MF/R) iliyotumika kwa utafiti wa lugha ya Kichina kwa ajili ya kuonesha udhaifu wa mkabala huo kwani unaiga mfumo unaofanya kazi katika lugha moja na kuutumia kwa lugha nyingine bila kuzingatia kuwa lugha ni tofauti. Kwa kutumia njia ya matawi ya kutenganisha vipashio vya maneno (TreeTagger) iliyobuniwa na Schmid (1994, 1995) kwa lengo la kuchunguza njia za awali za kuainisha vitenzi, mwandishi anayajadili matumizi yanayotofautiana ya dhana mbalimbali kama vile viini vya vitenzi, mashina ya vitenzi, na mizizi ya vitenzi jinsi ambavyo zimetumika katika mikabala mbalimbali ya kinadharia
A comparative study on selecting acoustic modeling units in deep neural networks based large vocabulary Chinese speech recognition
No full textThis paper compared the performance of different acoustic modeling units in deep neural networks (DNNs) based large vocabulary continuous speech recognition (LVCSR) systems for Chinese. Recently, the deep neural networks based acoustic modeling method has achieved very competitive performance for many speech recognition tasks, and has become the focus of current LVCSR research. Some previous work have studied the context independent and context dependent DNNs based acoustic models. For Chinese, a syllabic language, the choice of basic modeling units under the background of DNNs based LVCSR systems is a very important issue. Three basic modeling units, syllables, initial/finals, phones, are discussed and compared. Experimental results show that, in the DNNs based systems, the context dependent (CD) phones obtain the best performance, and the context independent (Cl) syllables have the similar performance with the CD initial/finals. How the number of clustered states impacts on the performance of DNNs based systems is also discussed, which showed different properties from the GMMs based systems. Besides, through introducing the multi-task learning strategy, these multiple modeling units can be combined in the DNNs training procedure. The experimental results indicate that combining these multiple modeling units using multi-task learning outperforms each individual modeling unit. (C) 2015 Published by Elsevier B.V.SCI(E)EICPCI-S(ISTP)[email protected]
Enterprise architecture modeling for cybersecurity analysis in critical infrastructures — A systematic literature review
No full textAs digital landscapes become increasingly complex, safeguarding sensitive information and systems against cyber threats has become a paramount concern for organizations. This paper provides a comprehensive review of how enterprise architecture modeling is used in the context of cybersecurity assessment, particularly focusing on critical infrastructures. The use of enterprise architecture models for cybersecurity is motivated by the main purpose of enterprise architecture, namely to represent and manage business and IT assets and their interdependence. While enterprise architecture modeling originally served to assess Business/IT alignment, they are increasingly used to assess the cybersecurity of the enterprise. The research questions explored include the types of enterprise architecture models used for cybersecurity assessment, how security aspects are incorporated into these models, the theoretical frameworks and reference theories applied, the research methods used for evaluation, and the strengths and limitations of these models in supporting cybersecurity assessment. This review encompasses research papers published before 2024, focusing on high-quality research from peer-reviewed journals and reputable conferences, thereby providing a structured and comprehensive overview of the current state of research in this domain.CC BY-NC 4.0Corresponding author: Yuning JiangE-mail addresses: [email protected]</p
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