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M. Farshad 《Journal of The Franklin Institute》1978,305(3):125-135
A two-dimensional theory for the incremental deformations of an initially stressed continuum with couple stresses is established in this paper. As applications of theory, the problems of internal instability and wave propagation are studied. It is found that the otherwise non-dispersive waves become dispersive, and additional local modes of buckling and vibratory motion are observed. To complete the theory, a stress function formulation of equations is also presented. 相似文献
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Bahram Vazirnezhad Farshad Almasganj Seyed Mohammad Ahadi Ari Chanen 《浙江大学学报(A卷英文版)》2009,10(10):1461-1475
Speaker variability is an important source of speech variations which makes continuous speech recognition a difficult task. Adapting automatic speech recognition （ASR） models to the speaker variations is a well-known strategy to cope with the challenge, Almost all such techniques focus on developing adaptation solutions within the acoustic models of the ASR systems. Although variations of the acoustic features constitute an important portion of the inter-speaker variations, they do not cover variations at the phonetic level. Phonetic variations are known to form an important part of variations which are influenced by both micro-segmental and suprasegmental factors. Inter-speaker phonetic variations are influenced by the structure and anatomy of a speaker＇s articulatory system and also his/her speaking style which is driven by many speaker background characteristics such as accent, gender, age, socioeconomic and educational class. The effect of inter-speaker variations in the feature space may cause explicit phone recognition errors. These errors can be compensated later by having appropriate pronunciation variants for the lexicon entries which consider likely phone misclassifications besides pronunciation. In this paper, we introduce speaker adaptive dynamic pronunciation models, which generate different lexicons for various speaker clusters and different ranges of speech rate. The models are hybrids of speaker adapted contextual rules and dynamic generalized decision trees, which take into account word phonological structures, rate of speech, unigram probabilities and stress to generate pronunciation variants of words. Employing the set of speaker adapted dynamic lexicons in a Farsi （Persian） continuous speech recognition task results in word error rate reductions of as much as 10.1% in a speaker-dependent scenario and 7.4% in a speaker-independent scenario. 相似文献
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Pearly Pei Li Lim Azizi Bahauddin 《International Journal of Early Years Education》2019,27(4):391-408
ABSTRACTWith studies on the physical environment of preschools concentrating mostly on settings in the Western world, before establishing minimum standards of quality, developing contextually appropriate physical environment factors become pertinent in Malaysia as a universal and possibly unaffordable high-quality standard may lead to ill-informed policy decision and allocation of funds (UNESCO 2006. EFA Global Monitoring Report 2007. Strong Foundations?: Early Childhood Care and Education). As a preliminary study, this conceptual paper sets out to uncover factors for consideration to achieve a contextually appropriate physical environment. In this article, ‘preschool’ denotes establishments for children aged four to six years in diverse educational settings. This article draws from two major fields: preschool education and physical environment of preschools. After secondary analysis of data, preliminary findings critically analysed from reviews of literature through a cross-disciplinary approach indicated that factors for consideration to achieve contextual appropriate physical environment include understanding the curriculum content; learning belief and culture of learning; physical environment factors (including allowable premise for establishing preschools, spatial planning, environmental condition and interior fit out) and statutory requirements (including health and safety factors and existing guidelines). Recommendations for future direction are discussed. 相似文献
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Hajar Eftekhari Maryam Pilehchian Langroudi Ali Banihashemi Mandana Azizi Reza Youssefi Kamangar Haleh Akhavan-Niaki 《Indian journal of clinical biochemistry : IJCB》2018,33(2):231-234
α-Thalassemia (α-thal) is considered as the most common inherited hemoglobin disorder worldwide. The present study describes the first observation of a combination of rare α-chain variants, and β-globin gene cluster deletion. A 21-year-old woman with thalassemia trait, marked microcytosis, mild anemia, and normal range of Hb F was referred to Amirkola genetic center in the North of Iran for routine molecular test of thalassemia in the context of carrier detection and prevention of thalassemia major birth. Nucleotide sequencing revealed a novel compound heterozygosity status for two non-deletional mutations on HBA2, Hb O Indonesia (α116(GH4)Glu → Lys), and Hb Matsue–Oki (α75 (EF4) Asp → Asn), together with heterozygosity for the sicilian (δβ)0-thal mutation. This finding highlights the necessity of deep molecular investigation of thalassemia in regions where thalassemia is abundant, and present highly heterogeneous population. 相似文献
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The effect of transmission time of propagating disturbances on the dynamic instability of structures is discussed in this paper. Through a parametric study it is shown that for certain values of transmission time and wave frequency parameters, the structure may become dynamically unstable. An example is worked out, and graphical results depicting the regions of instability are presented. 相似文献
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Mehdi Farshad 《Journal of The Franklin Institute》1976,302(2):187-194
This paper considers the problem of optimal shaping of arches subjected to general loading. The investigation comprises the search for the optimum centerline form as well as the optimum area distribution along the arch. As objective function and constraints, the appropriate combinations of arch thrust, material volume, total arc length, and enclosed area are considered. 相似文献
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Mehdi Farshad 《Journal of The Franklin Institute》1975,299(1):1-7
A mathematical model of surface layers such as tilings, plasters and coatings is established in this paper. To solve the field equations analytically, use is made of a pertubation scheme which yields the influence of the “backing” on the elastic behavior of “the sheet”. As an application, an illustrative example is worked out and the results are discussed. 相似文献
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Haslinda Abdul HAMID Vahid Hosseinpour SARMADI Vivek PRASAD Rajesh RAMASAMY Azizi MISKON 《Journal of Zhejiang University. Science. B》2022,23(1):42-57
Mesenchymal stem/stromal cell(MSC)-based therapy has been regarded as one of the most revolutionary breakthroughs in the history of modern medicine owing to its myriad of immunoregulatory and regenerative properties.With the rapid progress in the fields of osteo-and musculoskeletal therapies,the demand for MSC-based treatment modalities is becoming increasingly prominent.In this endeavor,researchers around the world have devised new and innovative techniques to support the proliferation of MSCs while minimizing the loss of hallmark features of stem cells.One such example is electromagnetic field(EMF)exposure,which is an alternative approach with promising potential.In this review,we present a critical discourse on the efficiency,practicability,and limitations of some of the relevant methods,with insurmountable evidence backing the implementation of EMF as a feasible strategy for the clinically relevant expansion of MSCs. 相似文献
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The success or failure of any team lies in the skills and abilities of the players that comprise the team. The process of player selection and team formation in multi-player sports is a complex multi-criteria problem where the ultimate success is determined by how the collection of individual players forms an effective team. In general, the selection of soccer players and formation of a team are judgments made by the coaches on the basis of the best available information. Very few structured and analytical models have been developed to support coaches in this effort. We propose a two-phase framework for player selection and team formation in soccer. The first phase evaluates the alternative players with a fuzzy ranking method and selects the top performers for inclusion in the team. The second phase evaluates the alternative combinations of the selected players with a Fuzzy Inference System (FIS) and selects the best combinations for team formation. A case study is used to illustrate the performance of the proposed approach. 相似文献
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