Browsing Fakülteler / Faculties by Issue Date
Now showing items 21-40 of 1830
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Design of low-pass ladder networks with mixed lumped and distributed elements by means of artificial neural networks
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Publisher and Date:(AVES YAYINCILIK, 2003)In this paper, calculation of parameters of low-pass ladder networks with mixed lumped and distributed elements by means of artificial neural networks is given. The results of ANN are compared with the values that are desired. It has been observed that the calculated and the desired values are extremely close to each other. So this algorith can be used to obtain the parameters that will be used to synthesize such circuits.
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Türkiye'ye Yönelik Doğrudan Yabancı Sermaye Yatırımcılarının İstihdama Etkisi
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Publisher and Date:(Marmara Üniversitesi, Sos. Bil. Enst., 2004)Doğrudan yabancı sermaye yatırımları, kalkınmaya olan katkısının anlaşılmasıyla, gelişmiş ve gelişmekte olan birçok ülkenin ilgi odağı haline gelmiştir. Günümüzde, yabancı sermayenin beraberinde getirdiği teknolojik gelişme ve istihdam artışının, yabancı yatırımları çeken ülkelerin ekonomilerine büyüme ve refah artışı olarak yansıdığı görüşü hakimdir. Öte yandan, gittikleri ülkelerde yeni iş olanakları yaratan doğrudan yabancı sermaye yatırımlarının, ülkelerin işsizlik sorununun çözümüne de katkıda ...
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An open software architecture of neural networks: Neurosoft
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Publisher and Date:(2004)Software architecture of generic distributed neural networks and its relevant information model have been developed. Principles of on-line architecture building training controlling (managing) and topological optimization guidelines are provided and extensively discussed.
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Nosocomial urinary tract infection surveillance in our hospital [Hastanemizde nozokomiyal üriner sistem enfeksiyonlari sürveyansı]
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Publisher and Date:(2004)
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Optimal input design for the detection of changes towards unknown hypotheses
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Publisher and Date:(Taylor & Francis Ltd, 2004)The effects of auxiliary input signals on detecting changes in ARMAX processes via statistical tests are discussed. Two extensions to the Cumulative Sum Test are considered. The first is applicable when the direction of the change in the parameter space is known but its magnitude is unknown. The second is applicable when neither is known. The performance criteria for the design of stationary stochastic inputs are based on the asymptotic properties of the tests. It is shown that power-constrained ...
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A re-configuring sliding-mode controller with a ustable robustness
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Publisher and Date:(Pergamon-Elsevier Science Ltd, 2004)In this paper a controller design method for underwater vehicles is presented which is based on re-configuration of a sliding-mode controller in case of disturbances caused by shallow water conditions. The disturbance distribution information can be obtained and used to update the corrective gain vector of the sliding-mode controller. This increases the robustness of the controller and hence keeps the system performance within acceptable limits. Proposed method is validated with simulations on a ...
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Pilot-aided bayesian MMSE channel estimation for OFDM systems: Algorithm and performance analysis
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Publisher and Date:(2004)This paper proposes a computationally efficient pilot-aided minimum mean square error (MMSE) channel estimation algorithm for OFDM systems. The proposed approach employs a convenient representation of the discrete multipath fading channel based on the Karhunen-Loeve (KL) orthogonal expansion and estimates uncorrelated series expansion coefficients. Moreover optimal rank reduction is achieved in the proposed approach by exploiting the optimal truncation property of the KL expansion resulting in a ...
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Rap hiphop Kreuzberg: Scripts of/for migrant youth culture in the WorldCity Berlin
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Publisher and Date:(Telos Press Ltd, 2004)
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Electronic Money in 2000's
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Publisher and Date:(Fırat Üniversitesi Sosyal Bilimler Dergisi, 2004)Para, dünya ekonomilerinin tümü için gerekli bir araçtır. Buna karşın elektronik para da gelişmiş ülkeler için gerekli bir araç haline gelmiştir. Günümüzde internet ortamı yolu ile yapılan finansal hizmetlerdeki muameleler için elektronik para ve elektronik ödeme sistemleri oldukça popülerdir. Elektronik sistemlerde meydana gelen bu değişmeler ekonomik ortamda gerçekleşen perakende satış ödemelerinde geleneksel işlemlerin yanında iki yeni formu ortaya çıkarmıştır. Bunlar, bir kişisel bilgisayar ...
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İnternet ve Demokrasinin Geleceği
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Publisher and Date:(Selçuk Üniversitesi İletişim Fakültesi, 2005)İnternet sosyal, siyasal ve ekonomik yaşamı etkilemekte ve bu alanlarda varolan alışkanlıklarımızın değişmesine yol açmaktadır. Bu değişimlerden en önemlisi hiç şüphesiz siyaset alanında yaşanmaktadır. İnternet yeni iletişim araçlarıyla siyasal hayatı değiştirmeye başlamıştır. Aynı zamanda bu yeni teknolojiyi demokrasi karşısında tehdit olarak görenler de vardır. Bu çalışmada siyasal katılım aracı olarak internet incelenmiş; internetin neden olabileceği tehdit ve tehlikeler örneklerle açıklanmış, ...
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Kıdem Tazminatının Bir Fondan Karşılanması (2002 Yasa Taslağı'na İlişkin Bir Değerlendirme)
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Publisher and Date:(Yerküre Tanıtım ve Yayıncılık Hizmetleri A.Ş., 2005)Türk iş hukukunda gelişmiş bir hak olan "kıdem tazminatı", işletmeler açısından ciddi bir maliyet unsurudur. Bu nedenle, bazı işverenler bu tazminatı ödememek için çeşitli yollara başvurmaktadır. İşsizlik sigortasının ve iş güvencesinin son yıllarda Türk hukukuna girmesi, kıdem tazminatını yeniden düzenleme ihtiyacını doğurmuştur. Türk doktrininde 1980'lerden beri bu konuda üretilen görüşlerin en fazla üzerinde durulanı, bu tazminatın işverenlerin sorumluluğunda bir fondan karşılanmasıdır. Ancak, ...
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Chebyshev nets formed by Ricci curves in a 3-dimensional Weyl space
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Publisher and Date:(Elsevier Science Bv, 2005)In this paper Ricci curves in a 3-dimensional Weyl space W-3(g T) are defined and it is shown that any 3-dimensional Chebyshev net formed by the three families of Ricci curves in a W-3(g T) having a definite metric and Ricci tensors is either a geodesic net or it consists of a geodesic subnet the members of which have vanishing second curvatures. In the case of in indefinite Ricci tensor only one of the members of the geodesic subnet under consideration has a vanishing second curvature. (c) 2004 ...
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Atomic collisions and free lepton pair production
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Publisher and Date:(2005)In this work we have calculated the total cross sections of electron-positron pair production for the collisions of fully stripped gold ions for various energies. We have also compared our calculation with other methods.
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Parametric bootstrap model selection criterion with in linear model compared to other criteria
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Publisher and Date:(INT INST Informatics & Systemics, 2005)The most important stage of econometrics estimation is the in model set up. The model set up has the best prediction ability and is therefore suitable for econometrics estimation. Between the dependent variable Y and other independent explanatory variables X must be a strong relationship in econometrics estimation. However all explanatory variables cannot be related to dependent variable Y. This condition creates a regression problem. A similar problem appears in variable selection equivalent to ...
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Signature verification using conic section function neural network
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Publisher and Date:(2005)This paper presents a new approach for off-line signature verification based on a hybrid neural network (Conic Section Function Neural Network-CSFNN). Artificial Neural Networks (ANNs) have recently become a very important method for classification and verification problems. In this work CSFNN was proposed for the signature verification and compared with two well known neural network architectures (Multilayer Perceptron-MLP and Radial Basis Function-RBF Networks). The proposed system was trained ...
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Supplementally and the sonnet: A reading of Ronsard's Les Amours Diverses 45
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Publisher and Date:(University of Nebraska Press, 2005)
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A low-complexity KL expansion-based channel estimator for OFDM systems
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Publisher and Date:(2005)This paper first proposes a computationally efficient pilot-aided linear minimum mean square error (MMSE) batch channel estimation algorithm for OFDM systems in unknown wireless fading channels. The proposed approach employs a convenient representation of the discrete multipath fading channel based on the Karhunen-Loeve (KL) orthogonal expansion and finds MMSE estimates of the uncorrelated KL series expansion coefficients. Based on such an expansion no matrix inversion is required in the proposed ...
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Frequency selective fading channel estimation in OFDM systems using KL expansion
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Publisher and Date:(2005)This paper proposes a computationally efficient linear minimum mean square error (MMSE) channel estimation algorithm based on KL series expansion for OFDM systems. Based on such expansion no matrix inversion is required in the proposed MMSE estimator. Moreover truncation in the linear expansion of channel is achieved by exploiting the optimal truncation property of the KL expansion resulting in a smaller computational load on the estimation algorithm. The performance of the proposed approach is ...
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Fault estimation of Trakya and Marmara Sea regions using 2D Gabor filtering [2 boyutlu gabor filtre yöntemi uygulayarak Trakya ve Marmara denizindeki fay hatlarının saptanması]
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Publisher and Date:(2005)In this paper we have applied 2D Gabor filtering to gravity and magnetic anomalies in estimation of discontinuities. Gabor filtering is an effective separation method compared to others having steerable and frequency parameter properties. We have found new faults using Gabor filtering for gravity and magnetic anomalies of Marmara Sea. © 2005 IEEE.
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Fault tolerant control with re-configuring sliding-mode schemes
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Publisher and Date:(2005)In this paper a controller design method for linear MIMO systems is presented which a sliding mode controller is reconfigured in case of system faults. Faults are detected with the residual vector generated from a standard linear observer. Once a fault has been detected the fault distribution matrix can be obtained and used to update the corrective or equivalent control parts of the sliding mode controller. As a result fault tolerant adaptive controllers keep the system performance within acceptable ...
