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Deniz araçlarının periyodik bozan etken kestirimli gürbüz denetimi
No full textThesis (Master)--Izmir Institute of Technology, Electronics and Communication Engineering, Izmir, 2020Includes bibliographical references (leaves: 48-53)Text in English; Abstract: Turkish and EnglishHighly uncertain and complex structures of marine vehicles render the control problem a challenging task. Moreover, the problem becomes much more challenging when the system is exposed to environmental disturbances. This thesis tackles this control problem with an adaptive robust control algorithm which is fused with a periodic disturbance estimation method. The periodic disturbance estimation method inspired from a Fourier series expansion technique is applied for compensation of environmental forces. In the first part of the thesis, an adaptive full state feedback backstepping controller which is supported with the periodic disturbance estimation method is applied. Stability of the closed–loop system and the convergence of the tracking error are established via Lyapunov based methods. Simulation studies are provided to support the theoretical results and to demonstrate the effectiveness of the proposed method. In the second part of the thesis, a nonlinear model free observer based adaptive output feedback controller in conjunction with the periodic disturbance estimator is designed. Lyapunov based arguments have been utilized to prove the stability of the closed– loop system, and the convergence of the tracking and observer errors under the closed– loop operation. Performance and viability of the proposed method are demonstrated via numerical simulations.Deniz araçlarının son derece belirsiz ve karmaşık yapıları kontrol problemini zor bir görev haline getirmektedir. Ek olarak, sistem çevresel bozan etkenlere maruz kaldığında bu problem daha da zorlaşmaktadır. Bu tez, bu kontrol problemini periyodik bozan etken kestirimi yöntemi ile birleştirilmiş uyarlamalı gürbüz denetim ile ele almaktadır. Çevresel kuvvetlerin telafisi için Fourier serisi açılımı tekniğinden esinlenen periyodik bozan etken kestirimi yöntemi uygulanmıştır. Tezin ilk bölümünde, periyodik bozan etken kestirimi yöntemi ile desteklenen uyarlamalı tüm durum geri beslemeli geri adımlamalı denetleyici uygulanmıştır. Kapalı döngü sistemin kararlılığı ve takip hatasının yakınsaması Lyapunov temelli yöntemler ile belirlenmiştir. Teorik sonuçları desteklemek ve önerilen yöntemin etkinliğini göstermek için benzetim çalışmaları yapılmıştır. Tezin ikinci bölümünde, periyodik bozan etken kestirimi yöntemi ile birlikte doğrusal olmayan modelden bağımsız gözlemci tabanlı uyarlamalı çıkış geri beslemeli denetleyici tasarlanmıştır. Sistemin kararlılığını ve kapalı döngü altında takip ve gözlemci hatalarının yakınsamasını kanıtlamak için Lyapunov tabanlı yöntemler kullanılmıştır. Önerilen yöntemin başarımı ve uygulanabilirliği sayısal benzetimlerle gösterilmiştir
Identification of heavy, energetic, hadronically decaying particles using machine-learning techniques
No full textTcherniaev, Evgueni/0000-0002-3685-0635; Ligabue, Franco/0000-0002-1549-7107; Sonnadara, Upul/0000-0001-7862-2537; Demiroglu, Zuhal Seyma/0000-0001-7977-7127; Malawski, Maciej/0000-0001-6005-0243; Dudko, Lev/0000-0002-4462-3192; Veckalns, Viesturs/0000-0003-3676-9711; Blekman, Freya/0000-0002-7366-7098; Battilana, Carlo/0000-0002-3753-3068; Ivanchenko, Vladimir/0000-0002-1844-5433; TOPAKSU, Aysel KAYIS/0000-0001-5819-6913; Bartosik, Nazar/0000-0002-7196-2237; de Souza Sandro, Fonseca/0000-0001-7830-0837; Steggemann, Jan/0000-0003-4420-5510; Wulz, Claudia-Elisabeth E/0000-0001-9226-5812; Gonzalez, Barbara Alvarez/0000-0001-7767-4810; Cuevas-Maestro, Francisco Javier/0000-0001-5080-0821; Iglesias, Maria Cruz Fouz/0000-0003-2950-976X; Demiroglu, Zuhal Seyma/0000-0001-7977-7127; Meridiani, Paolo/0000-0002-8480-2259; Di Florio, Adriano/0000-0003-3719-8041; D'Hondt, Jorgen/0000-0002-9598-6241; Cortezon, Jose Enrique Palencia/0000-0001-8264-0287; Ivanchenko, Vladimir N/0000-0002-1844-5433; 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Wu, Zhenbin/0000-0003-2165-9501; Litov, Leandar/0000-0002-8511-6883; Bravo, Cameron/0000-0003-1102-8247; Navarro-Tobar, Alvaro/0000-0003-3606-1780; Fiorina, Davide/0000-0002-7104-257X; Krikler, Benjamin/0000-0001-9712-0030; Lethuillier, Morgan/0000-0001-6185-2045; Autermann, Christian/0000-0002-0057-0033; Faccioli, Pietro/0000-0003-1849-6692; Reis, Thomas/0000-0003-3703-6624; Everaerts, Pieter/0000-0003-3848-324X; Mitra, Soureek/0000-0002-3060-2278; Krammer, Manfred/0000-0003-2257-7751; Hurtado Anampa, Kenyi/0000-0002-9779-3566; Bols, Emil Sorensen/0000-0002-8564-8732; Bachiller, IreneBachiller/0000-0002-3721-4876; Bhowmik, Sandeep/0000-0003-1260-973X; Klanner, Robert/0000-0002-7004-9227; Leonardo, Nuno/0000-0002-9746-4594; Sanchez-Hernandez, Alberto/0000-0001-9548-0358; Forthomme, Laurent/0000-0002-3302-336X; Vidal Marono, Miguel/0000-0002-2590-5987; Petrucciani, Giovanni/0000-0003-0889-4726; Ince Lezki, Merve/0000-0001-6907-0195; Rolandi, Luigi (Gigi)/0000-0002-0635-274X; Beaudette, Florian/0000-0002-1194-8556; Rizzi, Andrea/0000-0002-4543-2718; Mitselmakher, Guenakh/0000-0001-5745-3658; CHANG, PAO-TI/0000-0003-4064-388X; Kreczko, Luke/0000-0003-2341-8330; David, Pieter/0000-0001-9260-9371; Dewanjee, Ram Krishna/0000-0001-6645-6244; Kyberd, Paul/0000-0002-7353-7090; Lucchini, Marco Toliman/0000-0002-7497-7450; Goy Lopez, Silvia/0000-0001-6508-5090; Heath, Helen/0000-0001-6576-9740; Grandi, Claudio/0000-0001-5998-3070; Viliani, Lorenzo/0000-0002-1909-6343; Vami, Tamas Almos/0000-0002-0959-9211; Kayis Topaksu, Aysel/0000-0002-3169-4573; Ruiz Jimeno, Alberto/0000-0002-3639-0368; Krintiras, Georgios Konstantinos/0000-0002-0380-7577; Alves, Gilvan/0000-0002-8369-1446; Fernandez Menendez, Javier/0000-0002-5213-3708; Rappoccio, Salvatore/0000-0002-5449-2560; Gandrajula, Reddy Pratap/0000-0001-9053-3182; Grohsjean, Alexander/0000-0003-0748-8494; Haddad, Yacine/0000-0003-4916-7752; Shopova, Mariana/0000-0001-6664-2493; Tholen, Heiner/0000-0002-2299-2421; Caputo, Claudio/0000-0001-7522-4808; Taylor, Lucas/0000-0002-6584-2538; Azzi, Patrizia/0000-0002-3129-828X; Lagarde, Francois/0000-0001-6990-0398; Benato, Lisa/0000-0001-5135-7489; Levchuk, Leonid/0000-0001-5889-7410; Naimuddin, Md/0000-0003-4542-386X; Chapon, Emilien/0000-0001-6968-9828; Sagir, Sinan/0000-0002-2614-5860; Gerosa, Raffaele/0000-0001-8359-3734; Joshi, Yagya/0000-0002-0651-1878; lee, jason/0000-0002-2153-1519; Landsberg, Greg/0000-0002-4184-9380; Verweij, Marta/0000-0002-1504-3420; Ebrahimi, Aliakbar/0000-0003-4472-867X; Bhandari, Rohan/0000-0001-5888-955X; Govoni, Pietro/0000-0002-0227-1301; Stober, Fred/0000-0003-2620-3159; Belloni, Alberto/0000-0002-1727-656X; Fiorendi, Sara/0000-0003-3273-9419; Schonenberger, Myriam/0000-0002-6508-5776; Goldstein, Joel/0000-0003-1591-6014; Popov, Andrey/0000-0002-1207-0984; Usai, Emanuele/0000-0001-9323-2107; Dallavalle, Gaetano Marco/0000-0002-8614-0420; Mundim, Luiz/0000-0001-9964-7805; Dubinin, Mikhail/0000-0002-7766-7175; Giacomelli, Paolo/0000-0002-6368-7220; Cristella, Leonardo/0000-0002-4279-1221; Paulini, Manfred/0000-0002-6714-5787; Ricci-Tam, Francesca/0000-0001-9750-7702; Buchanan, James/0000-0001-8207-5556; Cassese, Antonio/0000-0003-3010-4516; Galli Mercadante, Pedro/0000-0001-8333-4302; Haller, Johannes/0000-0001-9347-7657; Alverson, George/0000-0001-6651-1178; Dragicevic, Marko/0000-0003-1967-6783; Sharma, Varun/0000-0003-1287-1471; Bodek, Arie/0000-0003-0409-0341; Hamel de Monchenault, Gautier/0000-0002-3872-3592; Soares, Mara/0000-0001-9676-6059; Redondo, Ignacio/0000-0003-3737-4121; Staiano, Amedeo/0000-0003-1803-624X; Ramirez Garcia, Mateo/0000-0002-4564-3822; Chauhan, Shubhanshu/0000-0002-6544-5794; Havukainen, Joona Juhani/0000-0003-2898-6900; Spagnolo, Paolo/0000-0001-7962-5203; Klein, Daniel/0000-0001-9143-5162; Vormwald, Benedikt/0000-0003-2607-7287; Roskes, Jeffrey/0000-0001-8761-0490; Luukka, Panja/0000-0003-2340-4641; Schulte, Jan-Frederik/0000-0003-4421-680X; Csanad, Mate/0000-0002-3154-6925; Zenz, Seth/0000-0002-9720-1794; Zghiche, Amina/0000-0002-1178-1450; Osterberg, Kenneth/0000-0003-4807-0414; Frankenthal, Andre/0000-0002-2583-5982; Lange, Clemens/0000-0002-3632-3157; Tavolaro, Vittorio Raoul/0000-0003-2518-7521; Wang, Dayong/0000-0002-9013-1199Machine-learning (ML) techniques are explored to identify and classify hadronic decays of highly Lorentz-boosted W/Z/Higgs bosons and top quarks. Techniques without ML have also been evaluated and are included for comparison. The identification performances of a variety of algorithms are characterized in simulated events and directly compared with data. The algorithms are validated using proton-proton collision data at root S = 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1). Systematic uncertainties are assessed by comparing the results obtained using simulation and collision data. The new techniques studied in this paper provide significant performance improvements over non-ML techniques, reducing the background rate by up to an order of magnitude at the same signal efficiency.BMBWF (Austria); FWF (Austria)Austrian Science Fund (FWF); FNRS (Belgium)Fonds de la Recherche Scientifique - FNRS; FWO (Belgium)FWO; CNPq (Brazil)National Council for Scientific and Technological Development (CNPq); CAPES (Brazil)CAPES; FAPERJ (Brazil)Carlos Chagas Filho Foundation for Research Support of the State of Rio de Janeiro (FAPERJ); FAPERGS (Brazil)Foundation for Research Support of the State of Rio Grande do Sul (FAPERGS); FAPESP (Brazil)Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); MES (Bulgaria); CERN; CAS (China)Chinese Academy of Sciences; MoST (China)Ministry of Science and Technology, China; NSFC (China)National Natural Science Foundation of China (NSFC); COLCIENCIAS (Colombia)Departamento Administrativo de Ciencia, Tecnologia e Innovacion Colciencias; MSES (Croatia); CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER (Estonia); ERC IUT (Estonia)Estonian Research Council; PUT (Estonia); ERDF (Estonia)European Union (EU); Academy of Finland (Finland)Academy of Finland; MEC (Finland); HIP (Finland); CEA (France)French Atomic Energy Commission; CNRS/IN2P3 (France)Centre National de la Recherche Scientifique (CNRS); BMBF (Germany)Federal Ministry of Education & Research (BMBF); DFG (Germany)German Research Foundation (DFG); HGF (Germany); GSRT (Greece)Greek Ministry of Development-GSRT; NKFIA (Hungary); DAE (India)Department of Atomic Energy (DAE); DST (India)Department of Science & Technology (India); IPM (Iran); SFI (Ireland)Science Foundation Ireland; INFN (Italy)Istituto Nazionale di Fisica Nucleare (INFN); MSIP (Republic of Korea); NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE (Malaysia); UM (Malaysia); BUAP (Mexico); CINVESTAV (Mexico); CONACYT (Mexico)Consejo Nacional de Ciencia y Tecnologia (CONACyT); LNS (Mexico); SEP (Mexico); UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MSHE (Poland); NSC (Poland); FCT (Portugal)Portuguese Foundation for Science and Technology; JINR (Dubna); MON (Russia); RosAtom (Russia); RAS (Russia)Russian Academy of Sciences; RFBR (Russia)Russian Foundation for Basic Research (RFBR); NRC KI (Russia); MESTD (Serbia); SEIDI (Spain); CPAN (Spain); PCTI (Spain); FEDER (Spain)European Union (EU); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter (Thailand); IPST (Thailand); STAR (Thailand); NSTDA (Thailand); TUBITAK (Turkey)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK); TAEK (Turkey)Ministry of Energy & Natural Resources - Turkey; NASU (Ukraine); STFC (United Kingdom)Science & Technology Facilities Council (STFC); DOE (U.S.A.)United States Department of Energy (DOE); NSF (U.S.A.)National Science Foundation (NSF); Marie-Curie programEuropean Union (EU); European Research Council (European Union)European Union (EU)European Research Council (ERC) [675440, 752730, 765710]; Horizon 2020 (European Union)European Union (EU) [675440, 752730, 765710]; Leventis Foundation; A.P. Sloan FoundationAlfred P. Sloan Foundation; Alexander von Humboldt FoundationAlexander von Humboldt Foundation; Belgian Federal Science Policy OfficeBelgian Federal Science Policy Office; Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium)Fonds de la Recherche Scientifique - FNRS; Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)Institute for the Promotion of Innovation by Science and Technology in Flanders (IWT); F.R.S.-FNRS (Belgium) under the "Excellence of ScienceEOS"-be.h projectFonds de la Recherche Scientifique - FNRS [30820817]; FWO (Belgium) under the "Excellence of ScienceEOS"-be.h projectFWO [30820817]; Beijing Municipal Science & Technology CommissionBeijing Municipal Science & Technology Commission [Z191100007219010]; Ministry of Education, Youth and Sports (MEYS) of the Czech RepublicMinistry of Education, Youth & Sports - Czech Republic; Deutsche Forschungsgemeinschaft (DFG) under Germany's Excellence StrategyGerman Research Foundation (DFG) [EXC 2121, 390833306]; Lendulet ("Momentum") Program of the Hungarian Academy of Sciences (Hungary); Janos Bolyai Research Scholarship of the HungarianAcademy of Sciences (Hungary); NewNational Excellence Program UNKP (Hungary); NKFIA (Hungary) [123842, 123959, 124845, 124850, 125105, 128713, 128786, 129058]; Council of Science and Industrial Research, IndiaCouncil of Scientific & Industrial Research (CSIR) - India; HOMING PLUS program of the Foundation for Polish Science; European Union, Regional Development FundEuropean Union (EU); Mobility Plus program of the Ministry of Science and Higher Education; National Science Center (Poland)National Science Centre, PolandNational Science Center, Poland [Harmonia 2014/14/M/ST2/00428, Opus 2014/13/B/ST2/02543, 2014/15/B/ST2/03998, 2015/19/B/ST2/02861, Sonata-bis 2012/07/E/ST2/01406]; National Priorities Research Program by Qatar National Research Fund; Ministry of Science and Education (Russia) [14.W03.31.0026]; Tomsk Polytechnic University Competitiveness Enhancement Program (Russia); "Nauka" Project (Russia) [FSWW-2020-0008]; Programa Estatal de Fomento de la Investigacion Cientifica y Tecnica de Excelencia Maria de Maeztu [MDM-20150509]; Programa Severo Ochoa del Principado de Asturias; Thalis program - EU-ESF; Aristeia program - EU-ESF; Greek NSRFGreek Ministry of Development-GSRT; Rachadapisek Sompot Fund; Chulalongkorn University (Thailand)Chulalongkorn University; Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand); Kavli Foundation; Nvidia Corporation; SuperMicro Corporation; Welch FoundationThe Welch Foundation [C-1845]; Weston Havens Foundation (U.S.A.)We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, PUT and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); NKFIA (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR, and NRC KI (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI, and FEDER (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (U.S.A.).; Individuals have received support from the Marie-Curie program and the European Research Council and Horizon 2020 Grant, contract Nos. 675440, 752730, and 765710 (European Union); the Leventis Foundation; the A.P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the F.R.S.-FNRS andFWO (Belgium) under the "Excellence of ScienceEOS"-be.h project n. 30820817; the Beijing Municipal Science & Technology Commission, No. Z191100007219010; the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Deutsche Forschungsgemeinschaft (DFG) under Germany's Excellence Strategy -EXC 2121 "Quantum Universe" -390833306; the Lendulet ("Momentum") Program and the Janos Bolyai Research Scholarship of the HungarianAcademy of Sciences, theNewNational Excellence Program UNKP, the NKFIA research grants 123842, 123959, 124845, 124850, 125105, 128713, 128786, and 129058 (Hungary); the Council of Science and Industrial Research, India; the HOMING PLUS program of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund, the Mobility Plus program of the Ministry of Science and Hig
Investigations of Flame Retardant Properties of Zinc Borate Accompanying with Huntite and Hydromagnesite in Polymer Composites
No full textFires have been a danger to human beings for the centuries. As people lost their lives and property in fires, they tried to fight the fire and their efforts in this area continued increasingly. Unfortunately, it is still not possible to completely reset the risk of starting the fire. But it seems likely to extinguish immediately after the fire has started, and this is very important to save people's lives. Scientists have been working in this field in recent years; they are concentrated on producing fire-resistant materials using different materials. This can be provided by different ways; either fire-resistant material can be produced new, or the fire resistivity can be provided by incorporating the additive material into a flammable material. In our previous studies, we used huntite and hydromagnesite minerals to give fire resistance property to polymer materials, very successful results were obtained. In this study, huntite and hydromagnesite minerals were used for accompanying with zinc borate in polypropylene composites in order to increase the flame retardant property of a polymeric materials. Different content of minerals were blended with polypropylene, and composites were produced by twin-screw extruder for observing synergistic effect. Scanning electron microscopy (SEM) analyses were conducted to determine the structural and morphological properties of the composites. Thermal properties were determined according to thermogravimetric analysis (TGA). Tensile and three point bending tests were carried out to obtain mechanical properties. Flame retardant performance was evaluated according to UL 94 vertically flammability test. It was concluded that very good synergistic effects were obtained that zinc borate was significantly influential with huntite/hydromagnesite in the flammability characteristics of composites because higher char formation is observed with zinc borate addtion. Moreover, the zinc borate reduced the smoke generated during combustion
Bağlamsal kelime gömmelerinin karakter bilgisi ile zenginleştirilmesi
No full textThesis (Master)--Izmir Institute of Technology, Computer Engineering, Izmir, 2020Includes bibliographical references (leaves: 58-64)Text in English; Abstract: Turkish and EnglishNatural Language Processing has become more and more popular with the recent advances in Artificial Intelligence. Fundamental improvements have been introduced in word representations to store semantic and/or syntactic features. With the recently published language model BERT, contextual word vectors could be generated. This model do not process character level information. In morphologically rich languages such as Turkish, this model's perception of syntax could be improved. In this thesis, a new model, called BERT-ELMo, which is a combination of BERT and ELMo, is proposed to enrich BERT with character level information. This model combines character level processing part of ELMo and contextual word representation part of the BERT model. To show the effectiveness of the proposed model, both quantitative (question answering) and qualitative (word analogy, word contextualization, morphological meaning, out of vocabulary word capturing) analyses are performed and it is compared with BERT on Turkish language. Thanks to character level addition, proposed model is able get trained in any language without any pre-analysis.To the best of our knowledge, this is the first study which uses morphological analysis to train the BERT model in Turkish, and the first model to integrate a character level module to BERT.Doğal dil işleme, günümüzdeki yapay zeka gelişmelerinin de yardımıyla popülerlik kazanmıştır. Bu popülerlik sayesinde farklı alt alanlarda yüksek başarımlı çalışmalar yayınlanmaktadır. Bu alt alanlardan birisi de doğal dil işlemenin temel problemlerinden birini ele alan kelimelerin vektörel gösterimi alanıdır. Kelimelerin sözdizimi ve anlamsal bilgilerini ihtiva etmesi amacıyla vektörel gösterim kullanılmaktadır. Yakın zamanda yayınlanan BERT modeli ile kelime vektörleri bağlamsal olarak yüksek bir başarım ile gösterilebilmektedir. Öte yandan bu model sözdizimi kurallarını gözlemleyecek karakter seviyesinde bir yapı içermediğinden, Türkçe gibi morfolojik olarak zengin dillerde istenen sonuçları veremeyebilmektedir. Bu çalışmada, BERT modelinin karakter seviyesinde de bilgi işleyebilmesini sağlamak amacıyla, BERT-ELMo modeli önerilmiştir. Bu yeni önerilen modelde, ELMo modelinin karakter seviyesinde işlem yapabilen modülü ile BERT modelinin bağlamsal kelime vektörü üreten modülü birleştirilmiştir. BERT-ELMo modeli hem nicel and nitel analizler ile incelenmiş ve BERT modeli ile Türkçe dili üzerinden karşılaştırılmıştır. Karakter seviyesindeki ekleme sebebiyle, önerilen model herhangi bir dilde herhangi bir ön çalışma yapılmaksızın çalıştırılabilir. Bilinen kadarıyla, bu çalışma Türkçe morfolojik analizi ile BERT modelini eğiten ve BERT modeline karakter seviyesinde bir modül eklemeyi deneyen ilk çalışmadır.TUBITAK (117E747
Hava akışlı elektrokoagülasyon reaktörü ile yeraltı sularından arsenik (V) giderimine işletme parametrelerinin etkisi
No full textTreatment of arsenate from groundwater by electrocoagulation (EC) reactor with air supply unit using Al ball electrodes were studied in this paper. Influence of some operating variables, for instance, applied current (0.075-0.3 A), initial pH (5.5-8.5), air flow rate (0-6 L/min), size of Al ball electrodes (5-10 mm), and height of electrode in EC reactor (2-8 cm) on the As(V) removal efficiency were evaluated. The As (V) removal efficiency increased with the increment of applied current, air flow, electrode altitude in EC reactor, and EC time while its removal efficiency decreased with the increment of size of Al ball electrodes. The maximum As(V) removal percentage, minimum operating cost and energy consumption were found as 98.68 %, 0.609 m^3m^3/ ve en düşük enerji tüketimi 3.7694 kWh/ olarak hesaplanmıştı
İzmir'den bir mimar portresi: Erbil Coşkuner'in erken dönem işleri
No full textThesis (Master)--Izmir Institute of Technology, Architecture, Izmir, 2020Includes bibliographical references (leaves: 136-141)Text in English; Abstract: Turkish and EnglishThis thesis aims to examine the work of, Erbil Coşkuner, one of the prominent names of modern Turkish architecture in İzmir. The thesis adopts a chronological layout in order to contextualize Coşkuner's career against the historical background that influenced him. The text is divided into three sections to periodize his career in order to shed light on the formative influences behind Coşkuner's career as an architect, as well as his intellectual development. The main aim of the thesis is not to position Erbil Coşkuner as a "leading actor" of İzmir and Turkey's architectural scene and to construct a hagiographic narrative, but rather to understand his career within a broader historical framework. The thesis is partially based on a series of open-ended interviews held with Coşkuner in person, and recorded with his consent. The interviews laid the groundwork for further research into Coşkuner's personal archives as well as publications based on his work. The primary material collected after the archival research and the interviews which helped construct a micro-history of the architect's career was then evaluated against histories of modern Turkish architecture. The thesis thus aims to question as well as contribute to this framework through the lens of Coşkuner's career.Bu tez modern Türk mimarisinin İzmir'de öne çıkan isimlerinden Erbil Coşkuner'in çalışmalarını incelemeyi amaçlamaktadır. Tezin içeriği kronolojik bir tarih yazımı yöntemiyle sınıflandırılmış; Coşkuner'in mimarlık süreci, tarihsel bağlamda neden-nasıl sorularıyla birbirleriyle ilişkilendirilmiştir. Tez, Coşkuner'in mimar olarak kariyerinin ve entelektüel gelişiminin ardındaki biçimlendirici etkilere ışık tutmak amacıyla kariyerinin dönemlere bölündüğü üç bölüme ayrılmıştır. Ayrıca Coşkuner'in çalışmalarını içeren kapsamlı bir araştırma ve değerlendirme de sunulmuştur. Tezde Erbil Coşkuner'i İzmir ve Türkiye mimarlık sahnesinin "önde gelen aktörü" olarak konumlandıran kurgusal ve yüceltici bir metin sunmak yerine Coşkuner'in yaşam ve kariyerine daha geniş bir tarihsel çerçevede bakmaya çalışılmıştır. Tezin araştırma evresinin en önemli bölümünü Coşkuner'le yapılmış olan açık uçlu sorulardan oluşan görüşmeler oluşturmuş, bu görüşmeler Coşkuner'in bilgisi dahilinde ses kayıt cihazı ile kaydedilmiştir. Görüşmeler Coşkuner'in kişisel arşivleri ve çalışmalarına dayanan yayınlar üzerine daha fazla araştırma yapılması için zemin hazırlamıştır. Arşiv araştırmasından sonra toplanan birincil kaynaklar ve mimarın kariyerinin mikro tarihini inşa etmeye yardımcı olan röportajlar, modern Türk mimarisinin tarihsel arka planına göre değerlendirilmiştir. Bu nedenle tez, Coşkuner'in kariyeri aracılığıyla bu tarihsel çerçeveyi sorgulamayı ve katkıda bulunmayı amaçlamaktadır
Measurements of production cross sections of WZ and same-sign WW boson pairs in association with two jets in proton-proton collisions at √s=13 TeV
No full textMeasurements of production cross sections of WZ and same-sign WW boson pairs in association with two jets in proton-proton collisions at root s = 13 TeV at the LHC are reported. The data sample corresponds to an integrated luminosity of 137fb(-1), collected with the CMS detector during 2016-2018. The measurements are performed in the leptonic decay modes W(+/-)Z -> l(+/-)nu l'(+/-)l'(-/+) and (WW +/-)-W-+/- -> l(+/-)nu l'(+/-)nu, where l, l' = e, mu. Differential fiducial cross sections as functions of the invariant masses of the jet and charged lepton pairs, as well as of the leading-lepton transverse momentum, are measured for (WW +/-)-W-+/- production and are consistent with the standard model predictions. The dependence of differential cross sections on the invariant mass of the jet pair is also measured for WZ production. An observation of electroweak production of WZ boson pairs is reported with an observed (expected) significance of 6.8 (5.3) standard deviations. Constraints are obtained on the structure of quartic vector boson interactions in the framework of effective field theory. (c) 2020 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)
İşlevselleştirilmiş perovskitlerin deneysel ve teorik olarak incelenmesi
No full textThesis (Master)--Izmir Institute of Technology, Photonics, Izmir, 2020Includes bibliographical references (leaves: 56-76)Text in English; Abstract: Turkish and EnglishThe last decade witnessed the rapid increase in the interest of the cesium lead halide perovskites (Cs-LHPs) and their successful applications in optoelectronic devices and photovoltaics. Increasing interest in perovskites arises from their extraordinary features such as having a tunable bandgap, variety in the crystal structure and phases, high photoluminescence quantum yield, ease of synthesis, and wide range absorption spectrum. Desiring to go beyond the emerging findings, subsequent studies have focused on the functionalization of perovskite nanocrystals (PNCs) by dimensional modifications and doping. This thesis study focuses on the modification of characteristics of Cs-LHPs by doping scenarios and dimensional reduction. Firstly, we reveal the modifications originated from the intercalation of Cr+3 and Gd+3 dopants into the Cs-LHP crystal structures. Cr+3 doping process is performed by using room temperature anti-solvent crystallization method. It is observed that the doping process leads to the emergence of distinctive signals in the PL spectrum. We clarify the origin of each additional PL peaks by experimental measurements and theoretical calculations. Additionally, white light emission is also achieved by the Cr3+ doping process. On the other hand, by using the hot-injection method, we synthesized neat and Gd+3 doped α-CsPbI3 NCs. The stability of α-CsPbI3 NCs is increased by the intercalation of Gd3+ ions into the host lattice. Also, enhancement of PLQY and lifetime is achieved by Gd3+ doping. Besides, to understand the dopant-induced modifications in the electronic and optical characteristics of perovskites, we also performed ab-initio density functional theory (DFT) calculations. In addition, we study how the characteristic properties of Cs-LHPs are modified upon dimensional reduction. By introducing the electrospraying method we reduced the synthesis and coating processes into a single step. Two-dimensional perovskite nanoplatelets were synthesized by electrospraying. We tuned the emission wavelengths of nanoplatelets in the range of 100 nm by thickness modifications. Lastly, by using DFT, we investigated the effect of thickness-dependent modifications on the structural, electronic, and vibrational properties of the orthorhombic CsPbI3 structure. Phonon calculations show that two ultra-thin forms of bulk CsPbI3 are dynamically stable. Also, the increase in the bandgap energy of the CsPbI3 structure by a decrease in thickness is revealed by electronic band dispersion calculations.Son on yıl, sezyum kurşun halojenür perovskitlere (Cs-LHP'ler) olan ilgideki hızlı artışa ve optoelektronik ve fotovoltaiklerdeki aygıtlardaki başarılı uygulamalarına tanık oldu. Bu yapılara olan ilginin artmasının nedeni sahip oldukarı ayarlanabilir enerji bant aralığı, yapı ve faz çeşitliliği, yüksek fotolüminesans kuantum verimliliği, sentez kolaylığı, yüksek taşıyıcı devingenliği ve geniş emilim aralıkları gibi sıradı¸sı özelliklerdir. Perovskitlerin özelliklerinde ortaya çıkan temel bulguların ötesine geçme arzusuyla, sonraki çalışmalar, perovskitlerin fonksiyonelleştirilmesine odaklanmıştır. Bu tez çalışması, katkılama işlemi ve boyutsal modifikasyonlar ile sezyum kurşun halojenür perovskitlerin fonksiyonelleştirilmesine odaklanmıştır. İlk olarak, Cr3+ ve Gd3+ atomlarının Cs-ILHP'ler üzerindeki etkileri araştırılmıştır. Katkılama işlemi, fotolümünesans spektrumunda ekstra sinyallere neden olmaktadır. Bu ekstra sinyallerin kökenini deneysel ölçümler ve teorik hesaplamalar ile açıklanmıştır. Bu sinyallerin yoğunluklarında zaman içerisinde meydane gelen değişimin sonucu olarak, beyaz ışık emilimi elde edildi. Öte yandan, Gd3+ atomunun sisteme eklenmsi ile CsPbI3 yapısının kararlılığı arttırılmıştır. Katkılanmamış perovskitlerin özelliklerini ve katkılama işleminin sonucunda ortaya çıkan değişiklikleri anlamak için yoğunluk fonksiyoneli teorisine dayalı hesaplamalar gerçekleştirildi. Ayrıca, Cs-LHP'lerin karakteristik özelliklerinde boyutsal indirgemye bağlı olarak meydana gelen değişimleri araştırdık. Elektrospreyleme yöntemi ile, perovskit sentezi ve kaplama işlemlerini tek aşamaya indirgenmiştir. Elektrospreyleme yöntemi ile iki boyutlu CsPbBr3 perovskit nano levhalar sentezlenmiştir. Kalınlık modifikasyonlarıyla, nano levhalanrın emisyon dalgaboyları ayarlanabilir hale getirilmiştir. Son olarak, boyutsal modifikasyonların CsPbI3 kristalinin yapısal, elektronik ve titreşimsel özelliklerinde meydana getirdiği değişiklikler, yoğunluk fonksiyoneli teorisi bazlı hesaplamalar ile incelenmiştir. Olası iki ultra-ince yapının dinamik olarak kararlı olduğu fonon hesaplamaları ile ortaya konmuştur. Boyutsal indirgemeye bağlı olarak meydana gelen bant aralığı enerji değerindeki artış elektronik bant dağılımları ile gösterilmiştir.TUBITAK under the project number 117F09
Stewart platformunun tasarımı, geliştirilmesi, modellenmesi ve denetlenmesi
No full textThesis (Master)--Izmir Institute of Technology, Electronics and Communication Engineering, Izmir, 2020Includes bibliographical references (leaves: 53-55)Text in English; Abstract: Turkish and EnglishNeed for a six degrees of freedom test platform to be used in the inertial stabilization development tests of turrets, remote controlled weapon systems or sight systems is present in modern military technology development. To address this research issue, within this thesis study, a Stewart platform is built and is used for stabilization development tests of a sight system. To give a clear picture of the whole system, mechanical design criterion, electrical architecture, communication between system units and chosen hardware of the designed Stewart platform are presented in detail. After the design and development phases are completed, kinematic model is obtained via utilizing the computer–aided design model of the Stewart platform. The inverse kinematic expressions of the platform are made use of to calculate the required actuator behaviors for the platform to achieve the desired motion. Then, a cascade control structure is designed for control of both speed and position of the actuators where proportional integral controller is preferred. The designed control strategy is implemented to the Stewart platform where satisfactory performance is observed for it to be used in military vehicles.Günümüz askeri teknoloji geliştirmelerinde silah kulelerinin, uzaktan komutalı silah sistemlerinin ve görüş sistemlerinin ataletsel stabilizasyon geliştirme testlerinde kullanılmak üzere altı serbestlik derecesine sahip bir test platformu ihtiyacı bulunmaktadır. Tezde bu araştırma konusu ele alınarak bir görüş sisteminin ataletsel stabilizasyon geliştirme testlerinde kullanılmak üzere bir Stewart platformu üretildi ve kullanıldı. Tüm sistemin net bir şekilde anlaşılabilmesi için Stewart platformunun mekanik tasarım kriterleri, sistem mimarisi, birimler arası haberleşme ve seçilen donanımlar detaylıca sunuldu. Tasarım ve geliştirme safhaları tamamlandıktan sonra Stewart platformunun bilgisayar destekli tasarımı kullanılarak kinematik modeli elde edildi. Platformun ters kinematik ifadeleri platformun istenen hareketleri yapabilmesi için gerekli eyleyici davranışlarını hesaplamada kullanıldı. Eyleyicilerin hız ve pozisyon denetimi için tercih
edilen PI denetleyiciler kademeli denetim yapısında kullanıldı. Tasarlanan denetleyici stratejisi Stewart platformuna uygulandı ve askeri sistemlerin testlerinde kullanmak için tatmin edici başarım gözlemlendi
GM2 ganglioside accumulation causes neuroinflammation and behavioral alterations in a mouse model of early onset Tay-Sachs disease
No full textPubMed: 32951593Background Tay-Sachs disease (TSD), a type of GM2-gangliosidosis, is a progressive neurodegenerative lysosomal storage disorder caused by mutations in the alpha subunit of the lysosomal beta-hexosaminidase enzyme. This disease is characterized by excessive accumulation of GM2 ganglioside, predominantly in the central nervous system. Although Tay-Sachs patients appear normal at birth, the progressive accumulation of undegraded GM2 gangliosides in neurons leads to death. Recently, an early onset Tay-Sachs disease mouse model, with genotypeHexa-/-Neu3-/-, was generated. Progressive accumulation of GM2 led to premature death of the double KO mice. Importantly, this double-deficient mouse model displays typical features of Tay-Sachs patients, such as cytoplasmic vacuolization of nerve cells, deterioration of Purkinje cells, neuronal death, deceleration in movement, ataxia, and tremors. GM2-gangliosidosis is characterized by acute neurodegeneration preceded by activated microglia expansion, macrophage, and astrocyte activation, along with the production of inflammatory mediators. However, the mechanism of disease progression inHexa-/-Neu3-/-mice, relevant to neuroinflammation is poorly understood. Method In this study, we investigated the onset and progression of neuroinflammatory changes in the cortex, cerebellum, and retina ofHexa-/-Neu3-/-mice and control littermates by using a combination of molecular genetics and immunochemical procedures. Results We found elevated levels of pro-inflammatory cytokine and chemokine transcripts, such as Ccl2, Ccl3, Ccl4, and Cxcl10 and also extensive microglial and astrocyte activation and proliferation, accompanied by peripheral blood mononuclear cell infiltration in the vicinity of neurons and oligodendrocytes. Behavioral tests demonstrated a high level of anxiety, and age-dependent loss in both spatial learning and fear memory inHexa-/-Neu3-/-mice compared with that in the controls. Conclusion Altogether, our data suggest thatHexa-/-Neu3-/-mice display a phenotype similar to Tay-Sachs patients suffering from chronic neuroinflammation triggered by GM2 accumulation. Furthermore, our work contributes to better understanding of the neuropathology in a mouse model of early onset Tay-Sachs disease.EMBO 2010 Installation GrantThis study was partially supported by EMBO 2010 Installation Grant to Prof Dr. Volkan Seyrantepe