oalib

OALib Journal期刊

ISSN: 2333-9721

费用:99美元

投稿

匹配条件: “Umut Okkan” ,找到相关结果约232条。
列表显示的所有文章,均可免费获取
第1页/共232条
每页显示
Application of Levenberg-Marquardt Optimization Algorithm Based Multilayer Neural Networks for Hydrological Time Series Modeling
Umut Okkan
International Journal of Optimization and Control : Theories & Applications , 2011,
Abstract: Recently, Artificial Neural Networks (ANN), which is mathematical modelingtools inspired by the properties of the biological neural system, has been typically used inthe studies of hydrological time series modeling. These modeling studies generally includethe standart feed forward backpropagation (FFBP) algorithms such as gradient-descent,gradient-descent with momentum rate and, conjugate gradient etc. As the standart FFBPalgorithms have some disadvantages relating to the time requirement and slowconvergency in training, Newton and Levenberg-Marquardt algorithms, which arealternative approaches to standart FFBP algorithms, were improved and also used in theapplications. In this study, an application of Levenberg-Marquardt algorithm based ANN(LM-ANN) for the modeling of monthly inflows of Demirkopru Dam, which is located inthe Gediz basin, was presented. The LM-ANN results were also compared with gradientdescentwith momentum rate algorithm based FFBP model (GDM-ANN). When thestatistics of the long-term and also seasonal-term outputs are compared, it can be seen thatthe LM-ANN model that has been developed, is more sensitive for prediction of theinflows. In addition, LM-ANN approach can be used for modeling of other hydrologicalcomponents in terms of a rapid assessment and its robustness.
Comparison of Different Ann Approaches in Daily Pan Evaporation Prediction  [PDF]
Yildirim Dalkili?, Umut Okkan, Nesrin Baykan
Journal of Water Resource and Protection (JWARP) , 2014, DOI: 10.4236/jwarp.2014.64034
Abstract:

Nowadays, one of the most important effects on water resources under climate change is increasing of free water surface evaporation which depends on the increasing of temperature. In basins, where there are no observed data, free water surface evaporation is taken into account depending on historical temperature and similar data and their long-term statistics. Predicting of real value of evaporation contains some uncertainties. The modeling of evaporation with a small number of predictors has crucial importance on the regions and basins where measurements are not sufficient and/or not exist. In this presented study, daily evaporation prediction models were prepared by using empirical Penman equation, Levenberg-Marquardt algorithm based on \"Feed Forward Back Propagation Artificial Neural Networks (LMANN)\", radial basis neural networks (RBNN), generalized regression neural networks (GRNN). When the models were compared, it was noticed that the results of neural network models are statistically more meaningful than the Penman equation.

A Water Balance Model Based on Budyko Framework and Its Calibration through Particle Swarm Optimization Algorithm
Umut Okkan, Umut K?rdemir
Dogal Afetler ve Cevre Dergisi , 2016, DOI: 10.21324/dacd.78858
Abstract: In the study presented, to define monthly rainfall-runoff relation, a water budget model based on Budyko approach was used. Proposed five-parameter model requires only monthly mean precipitation and potential evapotranspiration data as input. The study region covers the Nif Creek located at the Gediz Basin. Model was calibrated with particle swarm optimization (PSO) algorithm. To validate the performance of model calibrated via PSO, statistical measures were assessed. The results derived from the study show that water budget model is successful in modeling of monthly runoff series.
Problem of Homelessness of Human Being in the Context of Technology in Heidegger
Umut Da?
Beytulhikme : An International Journal of Philosophy , 2012,
Abstract: In this paper, I focused on an examination of the relationship between the critic of technology and homelesness of human being as a problem in Heidegger’s philosophy. I argue that technology and homelessness of human being needs to be dealt with in their relation to the metaphysical thinking through which history of western philosophy has been totally dominated. For, these two distinguished problems are the offsprings of western metaphysical thinking. Thus, both the problem of technology and homelessness can be best understood in terms of basic Heideggerian concepts such as the abondenment of metaphysical thinking, asking the question of Being anew, and finally thinking as thinking on Being.
üniversite Kütüphanelerinde Bilgi Hizmetlerinin nternet Arac l yla Pazarlanmas / Marketing of Information Services at University Libraries via Internet
Umut Al
Bilgi Dünyas? , 2002,
Abstract: Marketing concept, that had been important for for-profit organizations in the past, has now become an essential management tool for non-profit organizations as well. In time, university libraries which are non-profit organizations also started to make use of marketing methods and techniques. This descriptive study involves the Internet, marketing and university libraries within the same frame, and provides information about what should be done by university libraries in the process of marketing via Internet.
Türkiye’nin G reli At f Etkisi üzerine Bilimetrik Bir al ma A Scientometric Study on Relative Citation Impact of Turkey
Al, Umut
Bilgi Dünyas? , 2009,
Abstract: Türkiye’nin at f dizinlerine yapt katk her ge en y l art g stermektedir. zellikleTürkiye adresli dergilerin bir k sm n n at f dizinleri kapsam na al nmas , bu art daha dabelirgin k lm t r. Bu art ta, kar ama l bir yap oldu u herkes e bilinen at f dizinlerininsahibi ticari kurumun alm oldu u geni leme karar n n nemli rolü bulunmaktad r. Bu al mada Türkiye’nin g reli at f etkisi a s ndan bir de erlendirmesi yap lmakta, ülkelerve alanlar baz nda e itli kar la t rmalara yer verilmektedir. al man n verileri EssentialScience Indicators adl kaynaktan elde edilmi tir. Ara t rmam z, Türkiye’nin g reli at f etkisiyüksek ve dü ük alanlar n belirlemeyi, zaman i inde Türkiye’nin farkl alanlardaki g reliat f etkisinin de i ip de i medi ini ve farkl ülkelerle kar la t r ld nda Türkiye’nin g reliat f etkisi bak m ndan konumunu ortaya koymaya al maktad r. Bulgular, Türkiye’ning reli at f etkisi en yüksek alan n n mühendislik, en dü ük alan n n ise bitki ve hayvanbilimleri oldu unu g stermektedir. te yandan Türkiye’nin g reli at f etkisi yüksek alanlar ile dü ük alanlar aras nda zaman i inde nemli bir de i im oldu u g zlenmemi tir.Amerika Birle ik Devletleri hemen her alanda bilim dünyas ndaki tart lmaz egemenkonumunu sürdürmektedir. Türkiye ise henüz ngiltere, Almanya, Kanada, Fransa gibiülkelerle yar abilecek düzeye ula amam t r.Turkey’s contribution to citation indexes has been increasing every year. This increasehas become particularly visible with the inclusion of some of the Turkey addressed journalsin the citation indexes. The expansion decision taken by the commercial company thatowns citation indexes also plays a significant role in this increase. This study evaluatesthe relative citation impact of Turkey and includes various comparisons based on countryand field of study data. The data used in this study is obtained from Essential ScienceIndicators. The aim of the study is to examine Turkey’s high and low relative citationimpact areas and determine whether there is a change in relative citation impact in time.Our study also tries to expose Turkey’s position in terms of relative citation impact whencompared with different countries. The findings indicate that engineering is the highestrelative citation impact area in Turkey and plant and animal sciences is the lowest, and nosignificant changes are observed between the two in time. The United States of Americapreserves its indisputable leading position in all areas in the scientific world. Turkey, onthe other hand, is yet to reach to a level, where it can compete with such
Bilimsel Yay nlar n De erlendirilmesi: h-endeksi ve Türkiye’nin Performans / Evaluation of Scientific Publications: h-index and Performance of Turkey
Umut Al
Bilgi Dünyas? , 2008,
Abstract: [Turkish abstract] Bilim insanlar yapt klar al malar n sonu lar n geni kesimlere duyurabilmek i in ara t rma sonu lar n yay mlamaktad r. Yay mlanan al malar n etkinli i bibliyometrik ara t rmalarla l ülmekte ve niteliksel olarak sorgulanmaktad r. nemli bir etkinlik l üsü olan at flar ara t rma de erlendirme al malar n n parametrelerinden birisini olu turmaktad r. Ara t rma de erlendirme al malar ile disiplinlere zgü yay n yapma e ilimleri ortaya kmakta, ki iler, kurumlar ya da ülkeler aras nda kar la t rmalar yap lmakta, ülkelerin veya kurumlar n bilimsel yay n politikalar ekillenmektedir. Ayn zamanda ara t rma de erlendirme al malar neyin ara t rma yapmaya de er oldu unu ve bilim camias n n nelere de er verdi ini g stermektedir. Bu makalede son y llarda üzerinde e itli tart malar yap lan h-endeksi konusunda bilgi verilmekte, Türkiye’nin at f dizinleri kapsam ndaki yay nlar di er ülkelerle kar la t r lmaktad r. Tüm kar la t rmalarda l ü birimi y llara g re ülkelerin yay nlar n n alm oldu u h-endeksi de eridir. Buna g re Türkiye adresli yay nlar n h-endeksi de erleri a s ndan y ldan y la geli im g sterdi i saptanm t r. te yandan Danimarka, Avusturya, Finlandiya gibi ülkelerle yap lan kar la t rmalarda Türkiye’nin s z konusu ülkelerin gerisinde oldu u g rülmektedir. üniversiteler a s ndan da benzer bir durum s z konusudur. Türk üniversiteleri h-endeksi performans a s ndan dünyadaki bir ok üniversitenin alt nda yer almaktad r.[English abstract] The efficiency of published scientific works are measured and examined qualitatively by bibliometric methods. As a significant efficiency measurement tool, citations form one of the parameters of research evaluation methods. By means of research evaluation studies, publication tendencies of specific fields are revealed, comparisons are made between countries, institutions or individuals, and consequently all these results helped the formation of scientific publication policies of countries and institutions. Research evaluation studies also provide us with information on what is worth researching for scientists. This article gives information on the h-index results in order to compare Turkey and other countries with respect to the articles published in citation indexes over the years. In this respect, it has been observed that h-index value of Turkey-addressed publications has increased over the years. Yet, comparisons showed that Turkey still lags behind countries such as Austria, Finland and Denmark. Similar conditions exist in terms of the universities. Turkish universitie
The Reluctant Model: Nationalism, Religion and Turkey’s European Vocation
Umut ?zkirimli
Revista CIDOB d'Afers Internacionals , 2006,
Abstract: Might Turkey be thought of as a model of democratic Government for the rest of the Islamic world? Can Turkey be a lighthouse of democracy in the Islamic world? The objective of this work is to try to answer these questions, and for this it focuses on two interrelated factors, which the author believes to be fundamental, in order to try to understand Turkey’s domestic policy: “nationalism” and “religion”, two elements that have been the object of strong debate in Turkey at the turn of the century, in the framework of the two last elections, held in April 1999 and November 2002.
Vormarz Tiyatrosu ve Epik Tiyatro Ba lam nda Alman Tiyatro Tarihinin Geli im Süreci
Umut BALCI
Selcuk Universitesi Sosyal Bilimler Enstitusu Dergisi , 2009,
Abstract: Two prominent German drama traditions – Epic drama and Vorm rz drama – were compared and discussed so as to revealtheir contributions to the cultural and political characteristics of their periods. German Drama History was reviewed fromantiquity to the present day in order to reach the origins of these particular drama traditions. German Drama, which dates backto ancient Greek period and originated from Dionysus cult, went through numerous lingual and formal changes over time.German Drama History was discussed in terms of periods, and the transformation and developments that took place in theseperiods were investigated.German Drama took two different directions from the 10th century onwards, namely the Humanist Tradition and ReligiousTradition. While religious drama is inspired from the Bible and discusses such issues as church rituals, crucifixion, sacrifices,humanist drama ironically and sarcastically deals with realistic issues inspired by everyday life. The Mission of the German Dramawas discussed during the Reformation, when earthly and religious motifs were brought together, structural changes took place,plays started with a prologue and ended with an epilogue which summarized the whole play. It was observed that such issues aspain, helplessness, and pricks of conscience, this world and the other world were handled within the context of the motif“Memento Mori” in the Baroque period. Theoretical writings of Gottsched and Lessing in the Enlightenment Age added newdimensions to German Drama, so that drama was used for educational purposes. Especially, thanks to the works of LessingGerman Drama caused being a drama of minority, but it became a national one. Joyful drama works written by Goethe andSchiller in their youths were replaced by more empirical, artistic and aesthetical works in the classical age, when social freedomand the importance of logic and intelligence to achieve the freedom were emphasized. In the Realistic period, it was realized thatneeds of the public were made prominent, a language understandable by the folk was used and German drama transformed froma national drama into a universal one. There was a constant stress on the negative effects of the technology and scientificdevelopments on human life in the Naturalistic period. It is clear that German Drama suffered internal feud during the WorldWar II. The fact that policy-making and ideology just brought about death during the given period led German Drama topurification and works were penned taking conscience as the focal point.In the period from the early 19th century to the midst
Secularism in Turkey as a Nationalist Search for Vernacular Islam La cité en Turquie ou la visée nationaliste d’un islam vernaculaire : l’interdiction de faire l’appel à la prière en arabe (1932-1950).
Umut Azak
Revue des Mondes Musulmans et de la Méditerranée , 2011, DOI: 10.4000/remmm.6025
Abstract: Cet article analyse une réforme du régime kémaliste qui, dans les années 1933-1950, a imposé la récitation de l’appel à la prière en turc et a interdit la version arabe originelle. Cette réforme reflétait la pression nationaliste visant à créer un islam national non affecté par la langue et les traditions culturelles arabes. L’interdiction de l’appel à la prière en arabe faisait partie d’un programme nationaliste plus vaste qui visait à turquifier tous les domaines culturels y compris la religion, et à promouvoir un islam vernaculaire purifié de tout élément étranger. Cette intervention allait dans le sens de la la cité officielle, car cette dernière ne signifiait pas l’exclusion totale de l’islam de la sphère publique, mais plut t son contr le et son soutien tant qu’il demeurait loyal vis-à-vis de l’état moderniste. This article analyzes one of the reforms of the Kemalist state which imposed the recitation of the Turkish translation of the call to prayer and banned its original Arabic version between 1932 and 1950. This reform reflected the nationalist urge to create an Islam unaffected by the Arabic language and Arab cultural traditions. The ban on the call to prayer in Arabic was part of a wider nationalist program which aimed to Turkify all cultural fields including religion and to promote a local vernacular Islam. This intervention was in line with official secularism, because the latter did not mean the total exclusion of Islam from the public sphere, but its control and even its endorsement as long as it remained loyal to the modernist state.
第1页/共232条
每页显示


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.