198,580 research outputs found

    Taylor polynomial solution of hyperbolic type partial differential equations with constant coefficients

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    WOS: 000287923900010The purpose of this study is to give a Taylor polynomial approximation for the solution of hyperbolic type partial differential equations with constant coefficients. The technique used is an improved Taylor matrix method, which has been given for solving ordinary differential, integral and integro-differential equations [M. Gulsu and M. Sezer, A method for the approximate solution of the high-order linear difference equations in terms of Taylor polynomials, Int. J. Comput. Math. 82(5) (2005), pp. 629-642; M. Gulsu and M. Sezer, On the solution of the Riccati equation by the Taylor matrix method, Appl. Math. Comput. 188 (2007), pp. 446-449; A. Karamete and M. Sezer, A Taylor collocation method for the solution of linear integro-differential equations, Int. J. Comput. Math. 79(9) (2002), pp. 987-1000; N. Kurt and M. Cevik, Polynomial solution of the single degree of freedom system by Taylor matrix method, Mech. Res. Commun. 35 (2008), pp. 530-536; N. Kurt and M. Sezer, Polynomial solution of high-order linear Fredholm integro-differential equations with constant coefficients, J. Franklin Inst. 345 (2008), pp. 839-850; , S. Nas, S. Yalcinbas, and M. Sezer, A method for approximate solution of the high-order linear Fredholm integro-differential equations, Int. J. Math. Edu. Sci. Technol. 27(6) (1996), pp. 821-834; M. Sezer, Taylor polynomial solution of Volterra integral equations, Int. J. Math. Edu. Sci. Technol. 25(5) (1994), pp. 625-633; M. Sezer, A method for approximate solution of the second order linear differential equations in terms of Taylor polynomials, Int. J. Math. Edu. Sci. Technol. 27(6) (1996), pp. 821-834; M. Sezer, M. Gulsu, and B. Tanay, A matrix method for solving high-order linear difference equations with mixed argument using hybrid Legendre and Taylor polynomials, J. Franklin Inst. 343 (2006), pp. 647-659; S. Yalcinbas, Taylor polynomial solutions of nonlinear Volterra-Fredholm integral equation, Appl. Math. Comput. 127 (2002), pp. 196-206; S. Yalcinbas and M. Sezer, The approximate solution of high-order linear Volterra-Fredholm integro-differential equations in terms of Taylor polynomials, Appl. Math. Comput. 112 (2000), pp. 291308]. Some numerical examples, which consist of initial and boundary conditions, are given to illustrate the reliability and efficiency of the method. Also, the results obtained are compared by the known results; the error analysis is performed and the accuracy of the solution is shown

    Locally finite derivations and modular coinvariants

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    We consider a finite-dimensional kG-module V of a p-group G over a field k of characteristic p. We describe a generating set for the corresponding Hilbert Ideal. In case G is cyclic, this yields that the algebra k[V]G of coinvariants is a free module over its subalgebra generated by kG-module generators of V∗. This subalgebra is a quotient of a polynomial ring by pure powers of its variables. The coinvariant ring was known to have this property only when G was cyclic of prime order [M. Sezer, Decomposing modular coinvariants, J. Algebra423 (2015), 87-92]. In addition, we show that if G is the Klein 4-group and V does not contain an indecomposable summand isomorphic to the regular module, then the Hilbert Ideal is a complete intersection, extending a result of the second author and Shank [M. Sezer and R. J. Shank, Rings of invariants for modular representations of the Klein four group, Trans. Amer. Math. Soc. 368 (2016), 5655-5673].The second author is supported by a grant from TÜBITAK:114F42

    Automatic verification of the timing properties of MMT automata

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    Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.Includes bibliographical references (leaves 92-93).by Ekrem Sezer Sölemez.M.Eng

    In view of the effects on touristic functions and marina tourism; Didim marina

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    Günümüzde deniz ula m konusundaki geli melere ba l olarak insanlar, daha kolay bir ekilde deniz k y lar n , buralardaki muhte em güzelli e sahip koy ve adalar ziyaret edebilmekte ve ye ille mavinin ahenkli uyumunu yerinde ke /edebilmektedirler. Özellikle yat ad verilen deniz ta tlar , insanlar n bu merak n n giderilmesine ve yeni yerler görmelerine olanak tan maktad r. Bütün bunlara ba l olarak ortaya ç kan ve her geçen gün dünya turizm arenas nda dikkat çeken turizm aktivitelerinden birisi olan yat turizmi bak m ndan, son y llarda ülkemizde önemli geli meler söz konusu olmaktad r. Nitekim ülkemizde yat turizmi için büyük önem ta yan yat limanlar n n say s , özel giri imcilerin deste iyle giderek artmakta, bu alandaki rekabet ans m z oldukça yükselmektedir. Bu ba lamda inceleme konumuz olan Didim Yat Liman , ülkemizin yat turizmi alan ndaki en gözde yat r mlar ndan birisi olarak dikkat çekmektedir. 2009 y l may s ay ndan itibaren yat almaya ba layan, Didim Yat Liman (D-Marin Didim), ülkemizin en kapasiteli limanlar ndan birisi olmas n n yan s ra, Didim 'de yat turizminin geli tirilmesi ve Didim'in "marina kent" kimli ini peki tirmesi aç s ndan oldukça önemli bir yat r md r. Ülkemizde Bodrum, Ku adas ve Marmaris yat limanlar yla e de er özellikte yüksek kalite ve kapasiteye sahip olan marina, Didim ve çevresindeki turizm aktivitesinin çe itlendirilmesi için de oldukça önem ta maktad r. Didim 'de turizm ula t rmas alan nda alternatiflerin olu turulmas ba lam nda da oldukça önem ta yan bir yat r m olan yat liman , yap labilecek bir kurvaziyer liman yla desteklenip, tan t m iyi yap l rsa ve Milas-Bodrum Hava Liman ile olan ba lant s geli tirilirse Didim 'i önemli bir yat turizmi sahas na dönü türebilme potansiyeline sahiptir.Depending on the improvements as regards the marine transportation nowadays, the people can pay a visit the seacoasts, bays and islands with a wonderful beauty more easily and discover the green-blue harmony on site. Especially, the vessels named marina enable people to satisfy their curiosity and see new places. In relation to all of these, in view of the marina, emerging gradually and one of the attractive tourism activities in the touristic arena of world, there are significant improvements in our country. As a matter offact, the number of marina carrying great importance for the marina tourism, is increasing more and more with the help of private initiatives, our competitive chance in this field is getting higher and higher. In this sense, our research topic, Didim Marina, draws attention as one of the most favourite investments in the field of marina of our country. Since May 2009, as well as one of the most capacity ports of our country, Didim Marina starting to take marina is quite an important investment in view of the improvements in marina tourism in Didim and stressing the identity "marina city " of Didim. The marina, having high quality and capacity equal to Bodrum, Ku adas and Marmaris marinas in our country, is also of vital importance with a view to varying the tourism activities of Didim and its neighbourhood. If the marina, quite a significant investment in also making up the alternatives in the field of tourism transportation in Didim, is supported with cruise marina to be provided and if its advertisement is made well and if its connection with Mylasa-Bodrum Airport is improved, has the potential to convert Didim into significant marina tourism

    Seçme Hakkının Yaş Bakımından Sınırlanması ve Osmanlı-Türkiye Anayasacılığındaki Evrimi

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    Seçme hakkı, birey ve devlet arasında köprü kuran siyasal haklar kategorisinde yer alır. Bu hak, devletin oluşumu ve karar alma sürecine bireyin katılımını sağladığı için, demokrasinin zorunlu unsurlarındandır. Önceleri yalnızca erkeklerin belli bir kısmına ait olan seçme hakkı, zamanla eşitliğe uygun biçimde herkese tanınmıştır. Böylece, evrensel ilkelerden bir olan genel oy ilkesine ulaşılmıştır. Ancak genel oy ilkesi, makul sınırlar koymayı engellemez. Diğer bir deyişle genel oy, her insanın seçme hakkını kullanması anlamına gelmez. Söz konusu makûl sınırlardan biri de, yaş şartıdır. Seçme hakkı, Anayasa’da 67. maddede düzenlenir. İnsan Hakları Avrupa Sözleşmesi’nde (İHAS) düzenlenmeyen serbest seçim hakkı ise, İnsan Hakları Avrupa Sözleşmesi’ne Ek 1 no.lu Protokol m. 3’le düzenlenmiştir. Bu bağlamda, ülkemizde seçmen yaşı – 1934’te 18 yaştan 22 yaşa yükseltme hariç – sürekli düşme eğilimi göstererek, 1995 Anayasa değişikliği ile 18 yaşa düşürülmüştür. Seçilme yaşı ise, 2017 Anayasa değişikliği ile 18 yaşa düşürülmüştür. Böylece, seçme ve seçilme yaşı eşitlenmiştir. Oy hakkında temel ilke eşitliktir. Eşitlik bağlamında, yaş, seçim türü, vb. açılardan ideal ilkeler belirlenebilir.The category of political rights builds the bridge between the individual and the state. The rights to vote and be elected are among the rights in this category. These rights are essential elements of democracy, as they contribute to the formation of the state and the participation of the individual in the decisionmaking process. The right to vote, which previously belonged only to a certain part of men, has been granted to everyone in accordance with equality over time. Thus, the principle of universal suffrage, which is one of the universal principles, has been reached. However, the principle of universal suffrage does not preclude setting reasonable limits. In other words, universal suffrage does not mean that every person can exercise their right to vote. One of these reasonable limits is the age requirement. The right to free elections is regulated in Article 67 of the Constitution. The right to free elections, which is not regulated in the European Convention for the Protection of Human Rights and Fundamental Freedoms (ECHR), is regulated by article 3 of First Protocol to the Convention for the Protection of Human Rights and Fundamental Freedoms. In this context, the voting age in our country has generally tended to decrease. However, in 1934 rise from 18 to 22 is excluded. The voting age was reduced to 18 with the 1995 constitutional amendment. The election age was reduced to 18 with the 2017 Constitutional Amendment. Thus, voting and election age are equalized. The basic principle about voting is equality. In the context of equality, age, type of election, etc. some ideal principles can be determined

    The use of mobile applications for travel booking: impacts of application quality and brand trust

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    The increasing use of mobile applications by travellers and the high adaption of tourism companies into this new contact and sales platform, made it necessary to comprehensively investigate the mobile application users’ behaviours. This research combines the Stimulus-Organism-Response (S-O-R) framework and Technology Acceptance Model (TAM) to develop a theoretical background in examining travel booking behaviour of mobile application users. The conceptual model suggests that mobile application quality (MAQ) directly affects perceived ease of use (PEOU) and perceived usefulness (PU) which influence the intention to use (IU) mobile applications. Moreover, the offline brand trust (BT) has been hypothesised as a moderator between PEOU and PU’s impacts on IU mobile applications. Analyses results indicated that system and service quality dimensions of MAQ significantly affect IU mobile application via PEOU and PU. Moreover, offline BT had both direct and moderator influences on the formation of IU mobile application. The study findings contributed to the theory in understanding mobile application users’ behaviours and suggested valuable managerial strategies in the m-commerce context.No sponso

    sj-docx-1-jvm-10.1177_13567667211066544 - Supplemental material for The Use of Mobile Applications for Travel Booking: Impacts of Application Quality and Brand Trust

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    Supplemental material, sj-docx-1-jvm-10.1177_13567667211066544 for The Use of Mobile Applications for Travel Booking: Impacts of Application Quality and Brand Trust by Tahir Albayrak, M. Rosario González-Rodríguez, Meltem Caber, Sezer Karasakalin Journal of Vacation Marketing</p

    Can the imperative constitutional period be changed by law? (The constitution of Turkey art. 106/2 and the presidential election law art. 3/5)

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    1982 Anayasası’nda, Cumhurbaşkanlığı makamının boşalması halinde, genel seçime kadar kalan süreye göre bir ayrım yapılmıştır. Bu bağlamda, genel seçime bir yıl veya daha az kalmışsa Türkiye Büyük Millet Meclisi (TBMM) seçimi de Cumhurbaşkanı seçimi ile birlikte yenilenir. Buna karşın genel seçime bir yıldan fazla kalmışsa yalnızca Cumhurbaşkanı seçimi yapılır. Bu takdirde seçilen Cumhurbaşkanı TBMM seçim tarihine kadar görevine devam eder. Anayasa’ya göre her iki hâlde de seçim 45 günde yapılır: “Cumhurbaşkanlığı makamının herhangi bir nedenle boşalması halinde, kırkbeş gün içinde Cumhurbaşkanı seçimi yapılır” (1982 Anayasası, m. 106/2, c. 1). Bu süre 2018’de 7140 no.lu Kanunla 60 gün olarak değiştirilmiştir. Ancak bu kanun Anayasa’ya aykırıdır. Çünkü Anayasa’daki söz konusu süre, kesin ve emredici olup kanunla değiştirilemez.In case the office of the President of the Republic falls vacant, in terms of the remaining period, a distinstion is made in theConstitution of Turkey 1982. In this context, if the general election is to be held within a year or less, the election of the Grand National Assembly of Turkey (GNAT) shall be renewed together with the election of the President of the Republic. However, if the general election is to be held in over one year, only the Presidential election is renewed. In this case, the President of the Republic newly elected and shall continue to serve until the election date of the GNAT. In accordance with the Constitution of Turkey elections are held in forty five days in both cases:“In case the office of the President of the Republic falls vacant for any reason, the election of the President of the Republic shall be held in forty five days”1 (The Constitution of Turkey 1982, art. 106/2, c. 1). This period was changed to sixty days in 2018 with the law numbered 7140. But this law is unconstitutional. Because, this period in the Constitution is certain and imperative and can not be changed by la

    The design of biodegradable ofloxacin-based core-shell microspheres: Influence of the formulation parameters on in vitro characterization

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    Ofloxacin (OFL), second-generation fluoroquinolone, is a broad-spectrum antibiotic which is active against both Gram-positive and Gram-negative bacteria. However, OFL has a short biological half life (8-9 h) and poor stability in serum and needs frequently repeated doses during the treatment. The objective of this study was to fabricate the fucospheres and chitosan microspheres containing a poorly soluble drug, OFL, and to compare the formulation parameters influencing the in vitro properties of microparticles such as size, zeta potential, encapsulation efficiency and drug release characteristics. Particle size of fucospheres and chitosan microspheres has been found to be 0.61-1.48 mu m and 1.05-2.08 mu m, respectively. The zeta potentials have changed between 5.6 mV and 28.0 mV for fucospheres; 22.3 mV and 42.4 mV for chitosan microspheres. The fucospheres have had higher drug encapsulation efficiency than those of chitosan microspheres. The particle size, surface charge, encapsulation efficiency and in vitro drug release from both fucospheres and chitosan microspheres have been affected by type and concentration of the polymers used. The release mechanism from most of the microsphere formulations has been fitted to Higuchi kinetic model. It can be concluded that OFL-encapsulated fucospheres can be a potential delivery system for antibiotics.&lt;/
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