24 research outputs found
An Unconventional Finite Difference Scheme For Modified Korteweg-De Vries Equation
No full textA numerical solution of the modified Korteweg-de Vries (MKdV) equation is presented by using a nonstandard finite difference (NSFD) scheme with theta method which includes the implicit Euler and a Crank-Nicolson type discretization. Local truncation error of the NSFD scheme and linear stability analysis are discussed. To test the accuracy and efficiency of the method, some numerical examples are given. The numerical results of NSFD scheme are compared with the exact solution and a standard finite difference scheme. The numerical results illustrate that the NSFD scheme is a robust numerical tool for the numerical integration of the MKdV equation.WoSScopu
Applications of Parameter-Expanding Method to Nonlinear Oscillators in which the Restoring Force is Inversely Proportional to the Dependent Variable or in Form of Rational Function of Dependent Variable
No full textHe's parameter-expanding method with an adjustment of restoring forces in terms of Chebyshev's series is used to construct approximate frequency-amplitude relations for a conservative nonlinear singular oscillator in which the restoring force is inversely proportional to the dependent variable or in form of rational function of dependant variable. The procedure is used to solve the nonlinear differential equation approximately. The approximate frequency obtained using this procedure is more accurate than those obtained using other approximate methods and the discrepancy between the approximate frequency and the exact one negligible
A nonstandard numerical method for the modified KdV equation
No full textA linearly implicit nonstandard finite difference method is presented for the numerical solution of modified Korteweg-de Vries equation. Local truncation error of the scheme is discussed. Numerical examples are presented to test the efficiency and accuracy of the scheme
A Novel Condition to the Harmonic of the Velocity Vector Field of a Curve in Rn
No full textIn this paper, a condition is obtained for the harmonic of the velocity vector field in the curve family passing through the fixed p and q points in Rn. It shows that the condition can be expressed in terms of the curvature functions. Finally, we give an example which provides the mentioned condition in this work and illustrates it with figures
AUTHOR AND IDEOLOGY: FOLKLORE AND DELİ DUMRUL, KELOGLAN, KOROGLU BY THE AUTHOR SAMED BEHRENGÎ FROM TABRIZ
No full textSamed Behrengî, İran Türklerinin edebiyatında önemli bir isimdir. Kısa hayatında hem akademik hem de sanatsal anlamda birçok çalışma yayınlamıştır. Behrengî, halk bilgisi ürünlerini yakından tanıyan bir sanatçıdır ve bu ürünlerin bir kısmını yeniden yaratarak eserler vermiştir. Bu makalede Samed Behrengî'nin Deli Dumrul, Köroğlu ve Keloğlan eserleri incelenmiştir. İlk olarak Samed Behrengî'nin hayatı ve edebi kişiliği hakkında bilgi verilmiş, ardından halk bilgisi ürünlerinin sözlü veya yazılı olarak değişebilme ve yeniden yaratılabilme özelliklerinden kısaca bahsedilip Behrengî'nin Deli Dumrul, Keloğlan ve Köroğlu'yla ilgili eserleri değerlendirilmeye çalışılmıştır. Bu kısımda Behrengî'nin Türkçeye çevrilmiş eserleri kullanılmıştır. Sonuç olarak Samed Behrengî'nin bu tipleri seçip yeniden işleme amacı tartışılıp açıklanmıştır.Samed Behrengî is an important name in the literature of Iran Turks. In his short life, he published many academic and art works. Behrengî is an artist that knows folklore products well and and he re-created these materiels. In this article, Deli Dumrul, Köroğlu and Keloğlan works of Samed Behrengî has been studied. First of all, information about Samed Behrengî's life and his literary personality has been given, then shortly refered to folklore products' ability to been re-create and change the information in the Deli Dumrul, Keloğlan and Köroğlu works of Behrengî has been mentioned. In this part, the works of Behrengî that has been translated in Turkish has been used. As a result, the reason of Samed Behrengî reused this characters in his works has been explaine
Evaluation of Murtuza Memedov’s contribution to Azerbaijani musical life
No full textAzerbaycan halkının güçlü sanatçılarından biri olan Bülbül (Murtuza Rza oğlu Memmedov), ulusal kültürün gelişimine paha biçilmez bir katkı sağlamıştır. Türkülerin büyüleyici melodileri, ölümsüz şarkıcının güçlü sesi ve eşsiz performansında daha da güzel bir tecessümünü bulmuş, Azerbaycanlı ve yabancı bestecilerin romansları ve opera aryalarının parlak performansı ulusal vokal sanatının oluşumunda önemli bir rol oynamıştır. Bakü'de ve daha sonra Milano Konservatuvarında elde ettiği yüksek profesyonel eğitimi, ona hanende okuma tarzıyla Avrupa vokal sanat geleneklerine dayanan ulusal bir şarkı okulu yaratmayı amaçlayan girişimini hayata geçirmeye izin verdi. Murtuza Memmedov ayrıca Senfoni muğam, gazel-romans gibi Doğu ve Batı müzikal tefekkürün tezahürü olan müzikal sayıların oluşturulmasında aktif rol aldı. Azerbaycan folklor müzik örneklerinin toplanması, notaya geçirilmesi, öğretilmesi ve araştırılmasında büyük rol oynayan sanatçı tarafından 1932 yılında oluşturulan Bilimsel Araştırma Müzik Merkezi, ulusal müziğin oluşumunda özel bir rol oynamıştır. Araştırmada Ü. Hacıbeyov'un "Köroğlu", C. Hacıyev'in "Vatan", A. Bedelbeyli'nin "Nizami" operasında, Murtuza Memmedov'un söylediği müzik parçalarının analizini ve sanatçının opera ustası olarak performansı hakkında detaylı bilgi verilmektedir. Aynı zamanda Ü. Hacıbeyov'un "Sevgili canan" ve "Sensiz" romansları incelenmiştir.Bulbul (Murtuza Rza oglu Mamedov), one of the strongest artists of the Azerbaijani people, made an invaluable contribution to the development of national culture. The enchanting melodies of the Turks, the strong voice of the immortal singer and his unique performance found an even better embodiment, the romances of Azerbaijani and foreign composers and the brilliant performance of opera arias played an important role in the formation of national vocal art. His high professional training in Baku and later at the Milan Conservatory allowed him to implement his initiative to create a national singing school based on the traditions of vocal art in Europe in the style of reading. Murtuza Mamedov also took an active part in the creation of musical numbers, which are a manifestation of Eastern and Western musical thinking, such as Senfoni mugam, gazelleromance. Founded in 1932 by the artist, who played a major role in collecting, transcribing, teaching and researching samples of Azerbaijani folk music, the Council for the Study of Scientific Music played a special role in the formation of national music. In the study, U. Hajibayov’s “Koroglu”, J. Hajiyev’s “Vatan”, A. Bedelbeyli’s “Nizami” operas, analysis of musical pieces sung by Murtuza Mamedov and detailed information about the artist’s performance as an opera master are given. At the same time U. Hajibayov’s romances “Sevgili canan” and “Sensiz” were examined
Constacyclic locally recoverable codes from their duals
No full textA code has locality r if a symbol in any coordinate of a codeword in the code can be recovered by accessing the value of at most r other coordinates. Such codes are called locally recoverable codes (LRCs for short). Since LRCs can recover a failed node by accessing the minimum number of the surviving nodes, these codes are used in distributed storage systems such as Microsoft Azure. In this paper, constacyclic LRCs are obtained from their parity-check polynomials. Constacyclic codes with locality r <= 2 \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}\end{document} and dimension 2 are obtained and a sufficient and necessary condition for these codes to have locality 1 is given. Then, the construction is generalized. Distance optimal constacyclic LRCs with distance 2 are obtained. Also, constacyclic codes with locality 1 are constructed. They may be so useful in practice thanks to their minimum locality. Constacyclic codes whose locality is equal to their dimension are given. Furthermore, constacyclic LRCs are obtained from cyclotomic cosets.Yildiz Technical University Scientific Research Projects Coordination Department [FYL-2023-5605]; Scientific and Technological Research Council of Turkiye (TUBITAK) [BIDEB-2210]This research was supported by the Yildiz Technical University Scientific Research Projects Coordination Department (Project Number: FYL-2023-5605) and first author is partially supported by the Scientific and Technological Research Council of Turkiye (TUBITAK) (Grant Number: BIDEB-2210). The authors would like to thank the editors and the referees for their constructive comments, which have greatly contributed to improving the paper
(E,E)-N&#8242;-{4-[(2-Benzoylhydrazin-1-ylidene)methyl]benzylidene}benzohydrazide
No full textIn the title compound, C22H18N4O2, the molecules lie across an inversion centre. The dihedral angle between the mean planes of the central and terminal benzene rings is 66.03&#8197;(2)&#176;. The molecule displays trans and anti conformations about the C=N and N&#8212;N bonds, respectively. In the crystal, N&#8212;H...O hydrogen bonds, with the O atoms of C=O groups acting as acceptors, link the molecules into a chain along [101]
(2Z,N&#8242;E)-N&#8242;-[(2-Hydroxy-1-naphthyl)methylidene]furan-2-carbohydrazonic acid
No full textIn the title compound, C16H12N2O3, the dihedral angle between the mean planes of the naphthalene ring system and the furan ring is 21.3&#8197;(6)&#176;. The molecular structure is stabilized by an intramolecular O&#8212;H...N hydrogen bond, which generates an S(6) graph-set motif
Interplay between network configurations and network governance mechanisms in supply networks a systematic literature review
No full textPurpose: This work systematically reviews the extant academic management literature on supply networks. It specifically examines how network configurations and network governance mechanisms influence each other in supply networks.
Design: 125 analytical and empirical studies were identified using an evidence-based approach to review the literature mainly published between 1985 and 2012.
Synthesis: Drawing on a multi-disciplinary theoretical foundation, this work develops an integrative framework to identify three distinct yet interdependent themes that characterize the study of supply networks: a) Network Configurations (structures and relationships); b) Network Governance Mechanisms (formal and informal); and c) The Interplay between Network Configurations and Network Governance Mechanisms.
Findings: Network configurations and network governance mechanisms mutually influence each other and cannot be considered in isolation. Formal and informal governance mechanisms provide better control when used as complements rather than as substitutes. The choice of governance mechanism depends on the nature of exchange; role of management; desired level of control; level of flexibility in formal contracts; and complementary role of formal and informal governance mechanism.
Research implications: This nascent field has thematic and methodological research opportunities for academics. Comparative network analysis using longitudinal case studies offers a rich area for further study.
Practical Implications: The complexity surrounding the conflicting roles of managers at the organisation and network levels poses a significant challenge during the development and implementation stage of strategic network policies.
Originality/value: This review reveals that formal and informal governance mechanisms provide better control when used as complements rather than as substitutes
