IZTECH Research Centers Collection / İYTE Araştırma Merkezleri Koleksiyonu
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Book XI. Eğitim çalıştayı(01. Izmir Institute of Technology, 2024-09-27) Baran, Yusuf; Tanoğlu, Gamze; Özcan Gönülal, Yasemin; Yürüm, Ozan Raşit; Pirli, Damla; Daver, İlker; 04.03. Department of Molecular Biology and Genetics; 04.02. Department of Mathematics; 01.01. Units Affiliated to the Rectorate; 01. Izmir Institute of Technology; 04. Faculty of Scienceİzmir Yüksek Teknoloji Enstitüsü, ülkemizin bilimsel araştırma ve eğitim alanındaki öncü kuruluşlarından biri olarak yenilik ve mükemmeliyet odaklı çalışmalarını kararlılıkla sürdürmektedir. Enstitümüz, öğrencilerimizin eğitim süreçlerini güçlendirmek ve onları geleceğin liderleri olarak yetiştirmek adına, yenilikçi yaklaşımları eğitim modellerine entegre etmektedir. Bu bağlamda, günümüzün hızla gelişen teknoloji dünyasında, eğitimde yapay zekâ araçlarının sunduğu potansiyeli ve fırsatları değerlendirmek ve bu alanda fark yaratan uygulamalara öncülük etmek en büyük hedeflerimizden biridir. Türkiye'nin ve dünyanın dört bir yanından gelen değerli öğrencilerimizi en donanımlı şekilde yetiştirmeyi amaçlayan Enstitümüz, her yıl düzenlediği eğitim çalıştayları ile eğitimde kapasite gelişimine önemli katkılar sağlamaktadır. Bu yıl on birincisini gerçekleştirdiğimiz eğitim çalıştayımızın teması olan “Eğitimde Yapay Zekâ Araçlarının Kullanımı” ile eğitimde teknolojik dönüşüme uyum sağlama ve bu dönüşüme liderlik etme hedefimizi bir kez daha ortaya koyuyoruz. Bu platformun, tüm katılımcılarımız için yeni ufuklar açacağına ve eğitimde daha etkili ve verimli yöntemlerin keşfedilmesine vesile olacağına inancım tamdır. Yapay zekâ teknolojilerinin eğitime entegrasyonu, öğrenme deneyimlerini kişiselleştirme ve dijital içeriklerin zenginleştirilmesi gibi alanlarda büyük fırsatlar sunmaktadır. Çalıştayımızın içeriğinde yer alan dijital öğrenme ve teknoloji kullanımına dair konuların, katılımcılarımızın bakış açılarını genişletmelerine ve eğitimde yenilikçi düşüncelerin filizlenmesine katkı sağlamasını temenni ediyorum. Bu değerli çalıştayın gerçekleşmesinde katkıları bulunan Eğitimden Sorumlu Rektör Yardımcımız Sayın Prof. Dr. Gamze Tanoğlu’na, Eğitim Direktörlüğü Yürütme Kurulu Üyemiz Sayın Prof. Dr. Sacide Altınkaya ile diğer yürütme kurulu üyelerimize, kıymetli bilgi ve deneyimlerini bizlerle paylaşan değerli konuşmacılarımıza ve tüm katılımcılarımıza gönülden teşekkür ediyorum. Eğitimde yeni ufuklara birlikte yelken açmaya ve bu dönüşüm yolculuğunda güçlü adımlar atmaya devam edeceğiz.Article 6 Şubat Kahramanmaraş Depremleri ile Oluşan Kütle Hareketlerine Bir Örnek: Tepehan Heyelanı(2023) Dölek, İskender; Uzelli, Taygun; Ege, İsmail; Çelik, Ömer; 01.01. Units Affiliated to the Rectorate; 01. Izmir Institute of Technology6 Şubat 2023 tarihinde, Doğu Anadolu Fay Zonu (DAFZ) üzerinde yaklaşık 9 saat ara ile meydana gelen depremler sonucunda can ve mal kayıpları yaşanmış, yollar, köprüler zarar görmüş farklı türde (heyelan, kaya düşmesi, çamur akması) binlerce kütle hareketi meydana gelmiştir. Hatay’ın Altınözü ilçesine bağlı Tepehan köyünde Neojen yaşlı kumtaşı, killi kireçtaşı, kiltaşı ve marnlardan oluşan birim içerisinde gelişen heyelan 12.000 metrekarelik bir alanı etkilerken, 180.000 metreküpten fazla bir malzeme deprem sırasında oluşan heyelanla yer değiştirmiştir. Bu kadar büyük bir kütlenin yer değiştirmesinde depremlerin büyüklüğü yanında insan faaliyetleri de etkili olmuştur. Heyelanın meydana geldiği sahada Drone ile enine ve boyuna %70 bindirmeli sütunlar oluşturacak şekilde dijital görüntüler çekilmiştir. Bu görüntüler Agisoft yazılımında işlenmiş 60cm * 60cm piksel çözünürlükte Dijital Yüzey Modeli (DSM) ve Orto fotolar üretilmiştir. Heyelanın farklı yerlerinden alınan toprak numuneleri analiz edilerek genel toprak özellikleri belirlenmeye çalışılmıştır. Tepehan heyelanı depremlerin kütle hareketlerini (heyelanları) tetiklediği gerçeğinin somut bir örneği olması dışında yerleşim alanlarının doğal tehlikelere karşı (kütle hareketleri) güvenli hale getirilmesinde heyelanların izlenmesi ve haritalanmasının önemini bir kez daha göstermiştir. Depremlerin etkileri değerlendirilirken kütle hareketleri de dikkate alınmalıdır. Bu şekilde daha gerçekçi bir değerlendirme yapılabilir ve koruyucu önlemler daha etkili bir şekilde alınabilir.Article Citation - WoS: 6Citation - Scopus: 6A Novel Land Surface Temperature Reconstruction Method and Its Application for Downscaling Surface Soil Moisture With Machine Learning(Elsevier, 2024) Güngör, Şahin; Gündüz, Orhan; 03.10. Department of Mechanical Engineering; 03.07. Department of Environmental Engineering; 03. Faculty of Engineering; 01. Izmir Institute of TechnologyDownscaling of soil moisture data is important for high resolution hydrological modeling. Most downscaling studies in the literature have used spatially discontinuous land surface temperature (LST) maps as the main auxiliary parameter, which limits the creation of continuous soil moisture maps. The number of studies on soil moisture downscaling with machine learning that use gapless LST maps is limited. With this motivation, a hybrid reconstruction method has been proposed in this study to practically obtain continuous LST maps, which are then used to produce high resolution surface soil moisture (SSM) datasets. The proposed method is shown to have high mean performance with R2 and RMSE values of 0.94 and 1.84°K, respectively, for the period between 2019 and 2022. The developed reconstructed LST maps were then used to downscale original 9 km spatial resolution soil moisture datasets of SMAP L3 and SMAP L4 with Random Forest (RF) machine learning algorithm. The RF model were run with four different rainfall datasets, and the MSWEP rainfall dataset was found to produce the best results. The use of antecedent rainfall values as input variables in machine learning models has been shown to improve the performance of the models R2 0.76 to 0.93. The accuracy of the downscaled data was later evaluated for Western Anatolia Basins (WAB) in Türkiye with 31 in-situ stations. The downscaled SMAP L4 had good average statistical indicators R (0.815 ± 0.1), RMSE (0.09 ± 0.047 cm3/cm3), and ubRMSE (0.058 ± 0.025 cm3/cm3). Downscaled SMAP L3 was also validated with in-situ observations with satisfactory R (0.79 ± 0.074), RMSE (0.09 ± 0.043 cm3/cm3), and ubRMSE (0.06 ± 0.026 cm3/cm3) statistics. Furthermore, the performance of the downscaled SMAP L3 was also cross validated with SMAP + Sentinel 1 (L2) dataset between 2019 and 2022. The mean statistics of R (0.761 ± 0.11) and Root Mean Squared Difference (RMSD) (0.05 ± 0.014 cm3/cm3) between downscaled SMAP L3 and L2 data revealed that the new reconstruction method of LST used in the RF model for downscaling of soil moisture performed well to obtain high resolution soil moisture datasets. The proposed technique also overcame the difficulties associated with coastal regions where data was masked for quality considerations, by not only enhancing overall spatial resolution but also filling these data gaps and giving a complete SSM coverage. © 2024 Elsevier B.V.Article Citation - WoS: 4Citation - Scopus: 4Breakthrough Curve Analysis of Phosphorylated Hazelnut Shell Waste in Column Operation for Continuous Harvesting of Lithium From Water(Elsevier, 2024) Recepoğlu, Yaşar Kemal; Arar, Ozguer; Yuksel, Asli; 03.02. Department of Chemical Engineering; 03. Faculty of Engineering; 01. Izmir Institute of TechnologyIn batch-scale operations, biosorption employing phosphorylated hazelnut shell waste (FHS) revealed excellent lithium removal and recovery efficiency. Scaling up and implementing packed bed column systems necessitates further design and performance optimization. Lithium biosorption via FHS was investigated utilizing a continuous-flow packed-bed column operated under various flow rates and bed heights to remove Li to ultra-low levels and recover it. The Li biosorption capacity of the FHS column was unaffected by the bed height, however, when the flow rate was increased, the capacity of the FHS column decreased. The breakthrough time, exhaustion time, and uptake capacity of the column bed increased with increasing column bed height, whereas they decreased with increasing influent flow rate. At flow rates of 0.25, 0.5, and 1.0 mL/min, bed volumes (BVs, mL solution/mL biosorbent) at the breakthrough point were found to be 477, 369, and 347, respectively, with the required BVs for total saturation point of 941, 911, and 829, while the total capacity was calculated as 22.29, 20.07, and 17.69 mg Li/g sorbent. In the 1.0, 1.5, and 2.0 cm height columns filled with FHS, the breakthrough times were 282, 366, and 433 min, respectively, whereas the periods required for saturation were 781, 897, and 1033 min. The three conventional breakthrough models of the Thomas, Yoon-Nelson, and Modified Dose-Response (MDR) were used to properly estimate the whole breakthrough behavior of the FHS column and the characteristic model parameters. Li's extremely favorable separation utilizing FHS was evidenced by the steep S-shape of the breakthrough curves for both parameters flow rate and bed height. The reusability of FHS was demonstrated by operating the packed bed column in multi-cycle mode, with no appreciable loss in column performance.Article Araklı ve çevresinde (Trabzon) sel ve taşkına neden olan derelerin morfometrik analizlerle taşkın duyarlılıklarının belirlenmesi(Giresun Üniversitesi, 2023) Avci, Vedat; Dölek, İskender; Uzelli, Taygun; 01.01. Units Affiliated to the Rectorate; 01. Izmir Institute of TechnologyBu çalışmada, Trabzon iline bağlı Araklı ilçesi ve çevresinde sel ve taşkına yol açan derelerin morfometrik özellikleriyle taşkın duyarlılıklarının belirlenmesi amaçlanmıştır. 18 Haziran 2019 tarihinde Araklı ilçesi Çamlıktepe Mahallesi’nde meydana gelen taşkında 9 kişi hayatını kaybetmiştir. Karadere Çayı Havzası’nda meydana gelen taşkında çok sayıda yapı yıkılmıştır. Çalışmada Karadere Çayı Havzası, komşu Yanbolu Deresi, Küçükdere Çayı, Manahoz Çayı ve Kastel Deresi Havzaları ile morfometrik özellikleri açısından birlikte değerlendirilmiştir. Havzaları kapsayan 10*10 m hücre boyutuna sahip Sayısal Yükselti Modeli (SYM) kullanılarak, havzaların sınırları belirlenmiştir. Belirlenen havzalara Coğrafi Bilgi Sistemleri (CBS) yazılımları kullanılarak drenaj yoğunluğu (Dd), akarsu sıklığı (Fs), havza şekli (Rf), uzama oranı (Re), havza reliefi (Bh), relief oranı (Rh), engebelilik değeri (Rn), akım toplanma zamanı (Tc), hipsometrik integral (Hi) ve eğri (He) indisleri uygulanmıştır. İndis sonuçları kullanılarak derecelendirme yapılmış ve havzaların taşkın duyarlılığı belirlenmiştir. Buna göre; Karadere Çayı ve Kastel Deresi Havzalarında taşkın duyarlılığı yüksek, Manahoz Deresi Havzası’nda orta, Yanbolu Deresi ve Küçükdere Çayı Havzası’nda düşük olarak bulunmuştur. Rölyef özellikleri ve iklim-beşeri özellikleri nedeniyle havzalarda afet boyutunda taşkınların yaşanması muhtemeldir. Havza yönetimi çalışmalarında sel ve taşkınlara yol açan doğal (morfometrik ve jeomorfolojik) ve beşeri tüm faktörlerin dikkate alınması yararlı olacaktır.Book Part Citation - Scopus: 2High Radiogenic Granites of Western Anatolia for Egs: a Review(CRC Press, 2023) Chandrasekharam, Dornadula; Baba, Alper; Ayzit, Tolga; 03.03. Department of Civil Engineering; 03. Faculty of Engineering; 01. Izmir Institute of TechnologyTurkey has made remarkable progress in the hydrothermal sector by promoting both electricity generation and direct application. In terms of power generation, this country is the fourth top country in the world. Nearly 1 billion kWh of energy is being utilized to keep 150,000 homes warm in the winter. In addition, Turkey has huge amounts of uptapped energy in its high radiogenic granites in western Anatolia, spread over a cumulative area of 6,910 km2. The radioactive heat generated by these granites varies from 5 to 13 µW/m3. These granite plutons are located over a region with high heat flow values (120 mW/m2) and the Curie temperature isotherm in this region is located at a depth varying from 6 to 12 km. The heat flow values here are 50% higher than the world average. This thermal regime concurs well with the wet granite melting curve at a heat flow of 85 mW/m2. The entire thermal regime indicates a visco-elastic lower crustal layer in this region. Thus, these granites provide excellent sites for initiating Enhanced Geothermal Systems projects in Turkey. Earlier EGS projects in France and Australia gave power estimates of 79×106 kWh of electricity from 1km3 of such granite. With ongoing development in drilling technology, the classical concept of creating a fracture network is being replaced with loop technology that reduces minor seismic risks and also the cost of power. The most important additional advantage Turkey has is the high-temperature regime at shallow depth, unlike other countries where the granites are located at depths >5km. These factors cause the cost of power to fall below 6 euro cents per kWh. Besides the power and heat, the greatest advantage is the reduction in emissions and achieving UN sustainable development goals. A conservative estimate shows that these radiogenic granites of western Anatolia are capable of generating a minimum of 546×109 kWh of power. Energy from these granites can be utilized to generate freshwater using the desalination method. Earlier studies indicate that to produce 1 m3 of desalinated water, ~16 kWh of electrical energy are needed. The cost of fresh water generated using geothermal energy sources will be <1.5 euros per 1m3. Turkey can utilize the energy from granite for water and food security in the future. © 2024 selection and editorial matter, Dornadula Chandrasekharam and Alper Baba.Article Citation - WoS: 6Citation - Scopus: 8The Potential, Utilization and Development of Geothermal Energy in Türkiye(Maden Tetkik ve Arama Genel Mudurlugu-mta, 2023) Sener, Mehmet Furkan; Uzelli, Taygun; Akkus, Ibrahim; Mertoglu, Orhan; Baba, Alper; 03.03. Department of Civil Engineering; 01.01. Units Affiliated to the Rectorate; 01. Izmir Institute of Technology; 03. Faculty of EngineeringGeothermal energy is a natural resource that can be utilized directly or by converting to other types of energy. Considering the diversity of the geological structure of Turkiye, the geothermal systems have developed depending on young tectonic and volcanic active rock. Western and Central Anatolia are especially rich in geothermal resources. The geothermal well with the hottest well-bottom temperature was drilled in Central Anatolia, and the well-bottom temperature was measured as 341 degrees C at a depth of 3845 meters. In 2022, Turkiye's electricity generation capacity and the total installed direct heat use reached 1663 MWe and 5113 MWt, respectively. Considering Anatolia's Curie depth and heat flux, the probable thickness of the batholith can be regarded as 10 km. For example, the total granitoid area of Western Anatolia is 4221 km2 and at least 2% of this granitoid can provide approximately 8x107 MWh of electricity by Enhanced Deep Geothermal Systems (EDGS). When all granites in Turkiye are considered, it is expected that the future capacity of Turkiye will be much higher with drilling research and development studies and the discovery of new fields. This capacity will exceed 100.000 MWt levels in the medium term, especially with the addition of EDGSs.Book İzmir Yüksek Teknoloji Enstitüsü IX. Eğitim Çalıştayı: Eğitimde Yapay Zekâ(01. Izmir Institute of Technology, 2023) Tanoğlu, Gamze; Özcan Gönülal, Yasemin; 04.02. Department of Mathematics; 01.01. Units Affiliated to the Rectorate; 01. Izmir Institute of Technology; 04. Faculty of ScienceDeğerli okuyucular, Bu rapor, 2023-2024 Güz Yarıyılı’nda, İzmir Yüksek Teknoloji Enstitüsü Eğitim Direktörlüğü ve Uzaktan Eğitim Uygulama ve Araştırma Merkezi iş birliğiyle düzenlenen “Eğitimde Yapay Zekâ” temalı IX. Eğitim Çalıştayı’nın sonucunda oluşturulmuştur.Article Citation - WoS: 30Citation - Scopus: 34Statistical Downscaling of Grace Twsa Estimates To a 1-Km Spatial Resolution for a Local-Scale Surveillance of Flooding Potential(Elsevier, 2023) Khorrami, Behnam; Pirasteh, Saied; Ali, Shoaib; Şahin, Onur Güngör; Vaheddoost, Babak; 01. Izmir Institute of TechnologyThe Gravity Recovery and Climate Experiment (GRACE) paved the way for large-scale monitoring of the hydrological extremes. However, local scale analysis is aslo challenging due to the coarse resolution of the GRACE estimates. The feasibility of the downscaled GRACE data for the flood monitoring in the Kizilirmak Basin (KB) in Turkiye is investigated in this study by integrating the GRACE and hydrological model outputs of a random forest approach. Results suggest that the TWSA, over the Asagi Kizilirmak Basin (AKB), is ascending with an annual rate of + 3.51mm/yr; while the Orta Kizilirmak Basin (OKB), Yukari Kizilirmak Basin (YKB), Delice Basin (DB), Develi Kapali Basin (DKB), and Seyfe Kapali Basin (SKB) showed descending trend respectively as -1.15mm/yr, -1.58mm/yr, -1.14mm/yr, -2.34mm/yr, and -1.31mm/yr. The hydrological status of the basin showed that in 2003, 2005, 2010-2013, and 2015-2016 periods the study area was prone to the inundation. Hence, by validating the Flood Potential Index (FPI) rates acquired from the downscaled GRACE data, it was shown that the best correlation coefficient (0.73) between FPI and streamflow (Q) is associated with the SKB. It is also concluded that the downscaled TWSA associated with the fine-resolution models depicts acceptable accuracy in determination of the flood potential at local scales.Book İzmir Yüksek Teknoloji Enstitüsü VIII. Eğitim Çalıştayı Raporu: Afet Durumlarında Sürdürülebilir Eğitim(01. Izmir Institute of Technology, 2023) Tanoğlu, Gamze; Özcan Gönülal, Yasemin; Örün, Özgür; 04.02. Department of Mathematics; 01.01. Units Affiliated to the Rectorate; 01. Izmir Institute of Technology; 04. Faculty of ScienceDeğerli okuyucular, Bu rapor, 2022-2023 Bahar Yarıyılında, İzmir Yüksek Teknoloji Enstitüsü Eğitim Komisyonu ve Uzaktan Eğitim Uygulama ve Araştırma Merkezi iş birliğiyle düzenlenen “Afet Durumlarında Sürdürülebilir Eğitim” temalı VIII. Eğitim Çalıştayı’nın sonucunda oluşturulmuştur.Article Citation - WoS: 4Citation - Scopus: 4Are Soil and Geology Characteristics Considered in Urban Planning? an Empirical Study in Izmir (turkiye)(MDPI, 2023) Salata, Stefano; Uzelli, Taygun; 02.03. Department of City and Regional Planning; 01.01. Units Affiliated to the Rectorate; 01. Izmir Institute of Technology; 02. Faculty of ArchitectureIt is well acknowledged that sustainable soil management can play a crucial role in reducing the vulnerability of urban areas, but are soil characteristics properly evaluated in the decision-making process concerning urbanization? Within this work, we conducted an analysis of the land-use change trends in the city of Izmir (Turkey). We made an extended and detailed analysis of the urbanization processes between 2012 and 2018 in a geographic information system environment (Esri ArcGIS 10.8.1 and ArcGIS Pro 3.0). Then, we superimposed by spatial overlay different soil characteristics: land capability, hydraulic conductibility, soil groups, and fault lines. We discovered that although there is a joint agreement on soil and its geological importance in reducing urban vulnerabilities to flooding, urban heat islands, agricultural production, or earthquakes, there is scarce knowledge of its characteristics to inform land-use planning. This work sheds some light on how newly developed areas are planned without proper consideration of soil properties, following a fuzzy and irrational logic in their distribution. Results encourage the utilization and inclusion of soil knowledge to support the decision-making process concerning urban transformation to achieve more resilient and less vulnerable urban systems.Book İzmir Yüksek Teknoloji Enstitüsü Vıı. Eğitim Çalıştayı Raporu(Izmir Institute of Technology, 2022-10-07) Tanoğlu, Gamze; Özcan Gönülal, Yasemin; Örün, Özgür; 04.02. Department of Mathematics; 01.01. Units Affiliated to the Rectorate; 01. Izmir Institute of Technology; 04. Faculty of ScienceBu rapor, 2022-2023 Güz Yarıyılında, İzmir Yüksek Teknoloji Enstitüsü Eğitim Komisyonu ve Uzaktan Eğitim Uygulama ve Araştırma Merkezi iş birliğiyle düzenlenen “Eğitimde Dönüşümü Yakalamak” temalı VII. Eğitim Çalıştayı’nın sonucunda oluşturulmuştur. İYTE Eğitim Komisyonu ve Uzaktan Eğitim Uygulama ve Araştırma Merkezi iş birliği ile düzenlenen “Eğitimde Dönüşümü Yakalamak” temalı VII. Eğitim Çalıştayı, 7 Ekim 2022 tarihinde Microsoft Teams üzerinden çevrim içi ortamda gerçekleştirilmiştir. Çalıştayın sunuş konuşması Eğitim Komisyonu Başkanı Prof. Dr. Sacide Alsoy Altınkaya tarafından yapılmıştır. Ardından, İYTE Rektörü Prof. Dr. Yusuf Baran açış konuşmalarını gerçekleştirmiştir. Çalıştayın çağrılı konuşmacılarından Kadir Has Üniversitesi Rektör Yardımcısı Prof. Dr. Nihat Berker, “Hırpalama, Başarılama, Mutlulama” başlıklı sunumunu gerçekleştirmiştir. Bu konuşmanın ardından, İYTE eğitimden sorumlu Rektör Yardımcısı Prof. Dr. Gamze Tanoğlu, “İYTE 2023 Eğitim Vizyonu: Bilgilendirme ve Değerlendirme” başlıklı sunumunu gerçekleştirmiştir. Öğleden önceki oturumun son konuşması ise İYTE En İyi Ders Tasarımı Ödülleri kapsamında 2021-2022 Eğitim-Öğretim yılında birinciliğe hak kazanan İYTE Biyomühendislik Bölümü öğretim elemanı Dr. Betül Aldemir-Dikici’nin “Yılın Tasarım Ödülü” başlıklı sunumu ile tamamlanmıştır. Öğleden sonraki oturumda, Dr. Öğr. Üyesi Günnur Güler’in moderatörlüğünde yapılan panelde “MÜDEK Sürecinin Kazanımları”, Prof. Dr. Cüneyt Fehmi Bazlamaçcı, Prof. Dr. Erol Şeker ve Doç. Dr. Ünver Özkol tarafından ele alınmıştır. Çalıştay, İYTE Rektör Yardımcısı Prof. Dr. Gamze Tanoğlu moderatörlüğünde ve Prof. Dr. Oğuz Yılmaz, Doç. Dr. Gökhan Kiper ve Dr. Özgür Örün’ün katılımlarıyla gerçekleştirilen “Calculus Derslerinin Değerlendirilmesi” başlıklı panelle son bulmuştur.Article Perfluoropentacene Thin Films on Au(1 1 1) Surfaces: Effect of Kinetic Energy and Vibrational Properties(Elsevier, 2022-06) Yavuz, Adem; Danışman, M. Fatih; 01. Izmir Institute of TechnologyWe studied vibrational properties and the effect of beam kinetic energy on perfluoropentacene (PFP) thin films grown by supersonic molecular beam deposition (SMBD) technique on gold surfaces. Though similar growth mechanism was observed for different beam kinetic energies, in the case of low coverage (less than 1 monolayer) films and for low deposition rates significant differences were observed in the properties of films grown by using helium and argon carrier gasses with the former case resulting in higher average grain size. For multilayer films however there were no significant differences between helium and argon grown films. Vibrational properties were investigated by using Infrared Scattering-type Scanning Nearfield Optical Microscopy (s-SNOM) on clean and m-carborane-1-thiol (M1) coated template-stripped gold (TSAu) substrates. For both substrates thick PFP films (15 nm) had similar spectra whereas there were significant differences in the spectra of thin films (1 nm) due to PFP-substrate interactions. Davydov splitting of the IR modes were observed for both 1 nm and 15 nm films indicating similar molecular arrangements in both type of films.Book İzmir Yüksek Teknoloji Enstitüsü IV. Eğitim Çalıştayı(01. Izmir Institute of Technology, 2021) Tanoğlu, Gamze; Özcan Gönülal, Yasemin; 04.02. Department of Mathematics; 01.01. Units Affiliated to the Rectorate; 01. Izmir Institute of Technology; 04. Faculty of ScienceİYTE Eğitim Komisyonu ve Uzaktan Eğitim Uygulama ve Araştırma Merkezi (UZEM) iş birliği ile düzenlenen “Uzaktan Eğitim” temalı IV. Eğitim Çalıştayı, 16-17 Şubat 2021 tarihinde Microsoft Teams üzerinden çevrim içi ortamda ortalama yüze yakın katılımcı ile gerçekleştirilmiştir. Çalıştayın açış konuşmaları Eğitim Komisyonu Başkanı Prof. Dr. Sacide Alsoy Altınkaya ile Rektör Prof. Dr. Yusuf Baran tarafından yapılmıştır. Çalıştayın ilk konuşmacısı olan NTV eğitim programları yapımcısı Sadık Gültekin, “Z Kuşağını Anlamak” başlıklı bir konuşma yaparak bu kuşağın bilinen ve tanınan temel özelliklerini anlatmış ve birtakım tavsiyelerde bulunmuştur. Ardından UZEM’den Dr. Özgür Örün, “Ders Tasarımı” konulu bir sunum yapmıştır. Çalıştayın ilk günü, öğleden sonra İYTE’li akademisyenlerin yer aldığı tecrübe paylaşımı paneliyle sona ermiştir.Book İzmir Yüksek Teknoloji Enstitüsü Vı. Eğitim Çalıştayı Raporu(01. Izmir Institute of Technology, 2022) Tanoğlu, Gamze; Özcan Gönülal, Yasemin; 04.02. Department of Mathematics; 01.01. Units Affiliated to the Rectorate; 01. Izmir Institute of Technology; 04. Faculty of ScienceBu rapor, 2021-2022 Bahar Yarıyılında, İzmir Yüksek Teknoloji Enstitüsü Eğitim Komisyonu ve Uzaktan Eğitim Uygulama ve Araştırma Merkezi iş birliğiyle düzenlenen “Kariyer Planlamada Üniversitelerdeki Değişimin Yönetimi” temalı VI. Eğitim Çalıştayıʼnın sonucunda oluşturulmuştur.Article Citation - WoS: 8Citation - Scopus: 8Structural Controls and Hydrogeochemical Properties of Geothermal Fields in the Varto Region, East Anatolia(Tubitak Scientific & Technological Research Council Turkey, 2021) Uzelli, Taygun; Sener, Mehmet Furkan; Dolek, Iskender; Baba, Alper; Sozbilir, Hasan; Dirik, Ramazan Kadir; 03.03. Department of Civil Engineering; 01.01. Units Affiliated to the Rectorate; 01. Izmir Institute of Technology; 03. Faculty of EngineeringVarto and the surrounding region have important geothermal fields, developing in strike-slip tectonic setting in East Anatolia, which resulted from the collision of the Arabian and Eurasian plates. The main structural elements in the area are the NE-trending sinistral and NW-trending dextral strike-slip fault segments and N-S trending extension zones. In order to determine fault-controlled geothermal circulation, it is very important to fully characterize the structural elements in these complex environments. The widely distributed volcanic rocks have fracture and crack systems that play an important role in surface infiltration, geothermal fluid, and groundwater circulation. Especially in areas where the fault segments intersect, hot springs outlets and natural resources easily come to the surface. In order to understand the flow paths of geothermal fluid along the faults in these geothermal systems, it is necessary to determine the stress state of the faults and to map the distribution of the structural elements. For this reason, we conducted a detailed study on the Varto Fault Zone, which has important geothermal fields in Eastern Anatolia. We present conceptual models of the geothermal fields in the Varto region that show favorable geothermal activity on the intersecting fault segments, fault bends, step-overs, and accompanying fracture-crack sets. As a result, we emphasize that the planes of strike-slip faults in transtensional areas are more favorable for secondary permeability and enhances the geothermal fluid circulation, and this can be supported by hydrogeochemical data.Article Citation - WoS: 4Citation - Scopus: 13Effects of Seismic Activity on Groundwater Level and Geothermal Systems in İzmir, Western Anatolia, Turkey: the Case Study From October 30, 2020 Samos Earthquake(TÜBİTAK - Türkiye Bilimsel ve Teknolojik Araştırma Kurumu, 2021) Uzelli, Taygun; Bilgiç, Esra; Öztürk, Bahadır; Baba, Alper; Sözbilir, Hasan; Tatar, Orhan; 01. Izmir Institute of Technology; 03.03. Department of Civil Engineering; 01.01. Units Affiliated to the Rectorate; 03. Faculty of EngineeringThe October 30, 2020 Samos earthquake (Mw 6.6) affected the Aegean Sea and environs, caused destruction and loss of life in the city of İzmir located 70 km away from the earthquake epicenter. Before this earthquake, water resources were monitored in the areas of Bayraklı, Gülbahçe, and Seferihisar. For this purpose, 10 groundwater monitoring wells were drilled in the Bayraklı area, where groundwater level, temperature, and electrical conductivity changes were monitored at 1-h intervals in 5 wells. Besides physical parameters such as groundwater levels, temperatures and electrical conductivities, hydrogeochemical cations, and anions measured in the study area. Change in the groundwater levels was observed before, during, and after the Samos earthquake. A trend of rising groundwater level was observed two days before the mainshock, to a height of 10 cm, and the level was maintained till the end of the earthquake. The water levels returned to its original height after about 7 to 10 days of the earthquake. Moreover, electrical conductivity (EC) values were changed because of the interaction with the surrounding rocks and well walls, mixing with different waters during the earthquake shaking. The essential anomalies were observed in the geothermal fields of Gülbahçe and Seferihisar. Due to this earthquake, new geothermal springs emerged along the NE-SW trending Gülbahçe and Tuzla faults, located about 50 to 20 km from the Samos earthquake epicenter, respectively. The new geothermal waters are in Na-Cl composition and similar to other geothermal springs in the region. While the recorded water temperatures in the new geothermal springs vary from 40 to 45 °C in Seferihisar, it was measured between 35 and 40 °C in Gülbahçe. Due to these anomalies, it is found essential to monitor the effect of the earthquake on the physical and chemical characteristics of the groundwater and its usefulness in earthquake predictions.Article Citation - WoS: 4Citation - Scopus: 10Characterization of Sb Scaling and Fluids in Saline Geothermal Power Plants: a Case Study for Germencik Region (büyük Menderes Graben, Turkey)(Pergamon-Elsevier Science Ltd, 2021) Tonkul, Serhat; Baba, Alper; Demir, Mustafa M.; Regenspurg, Simona; 03.06. Department of Energy Systems Engineering; 03.03. Department of Civil Engineering; 03.09. Department of Materials Science and Engineering; 03. Faculty of Engineering; 01. Izmir Institute of TechnologyTurkey is located on the seismically active Alpine-Himalayan belt. Although tectonic activity causes seismicity in the Anatolian plate, it also constitutes an important geothermal energy resource. Today, geothermal energy production is heavily concentrated in Turkey's Western Anatolia region. Graben systems in this region are very suitable for geothermal resources. The Buyuk Menderes Graben (BMG) is an area of complex geology with active tectonics and high geothermal potential power. Germencik (Aydin) is located in the BMG, where the geothermal waters include mainly Na-Cl-HCO3 water types. This study examined the stibnite scaling formed in the preheater system of the Germencik Geothermal Field (GGF). The formation of the stibnite scaling on the preheater system dramatically reduces the energy harvesting of the GGF. Considering the stibnite scaling in the surface equipment, the optimum reinjection temperature was determined as 95 degrees C to prevent stibnite scaling in the GGF.Article Citation - WoS: 11Citation - Scopus: 10Cfd Characteristics of Refrigerated Trailers and Improvement of Airflow for Preserving Perishable Foods(MDPI, 2019) Yildiz,T.; 01. Izmir Institute of TechnologyWhen preserving perishable goods, maintaining a constant temperature over the cold supply chain is essential. Therefore, refrigerated vehicles are an important part of the cold supply chain system. However, many traditional refrigerated cargo systems are not designed to support the homogeneity of the temperature inside cargo trailers. Indeed, refrigerating equipment is usually placed on one side of transportation systems as this is considered to be more practical. Such a configuration thus leads to significant temperature differences in the two distinct parts of a refrigerated cargo trailer, which might affect the quality, safety, and shelf life of perishable foods. This research aims to improve the temperature distribution of refrigerated trailers. In this study, it is highlighted that in the most commonly used traditional refrigerated trailer models, lower air velocity and higher product temperature are observed at the rear. There is also a partial product chilling risk at the front of the refrigerated trailer. This study investigates and reports significant differences among the three airflow design models of refrigerated cargo systems by applying turbulence flow, heat, and mass transfer models. The analyses of these three models reveal that significant improvement could be achieved by applying the proper arrangements of inlets on the ceiling of the trailer body. © 2019 by the author.Article Citation - WoS: 10Citation - Scopus: 15Design and Analysis of a Lightweight Composite Shipping Container Made of Carbon Fiber Laminates(MDPI, 2019) Yildiz,T.; 01. Izmir Institute of TechnologyThe literature indicates that a 20% reduction in the weight of empty 40-foot shipping containers would result in $28 billion of fuel savings, along with a 3.6 exajoule reduction in the energy demand over containers’ 15-year lifetime. Decreasing the energy demand and thereby greenhouse gas emissions by utilizing lightweight shipping containers has been an unexplored strategy. In this regard, this study investigates the possibility of further reducing the weight of an empty container without compromising the structural integrity, strength, and function of a traditional steel container. This research finds that up to an 80% reduction in weight is possible by producing shipping containers with composite materials. This research presents the new design of a 40-foot container made of carbon fiber laminates. The tare weight of a traditional 40-foot shipping container is around 3750 kg. On the contrary, in this research, the weight of a composite design of the same container is calculated to be around 822 kg. Additional tests with various loads, such as lifting the container and stacking loads onto the composite container, are performed to explore the strength and buckling issues of the design presented in this study. The analyses reveal that the composite shipping container is a highly promising candidate for reducing greenhouse gas emissions, providing fuel savings and thus reducing the operational costs of transportation. © 2019 by the author.
