Projeler
Permanent URI for this collectionhttps://hdl.handle.net/20.500.14411/26
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Research Project Alan Özelinde Sosyalleştirme Yaklaşımı Çerçevesinde Etkili Ebeveynlik: Annenin Duygusal Erişilebilirliği ile Gelişimsel Çocuk Çıktıları Arasındaki İlişkiThis study aims to examine effective parenting within the framework of the domains-of_x0002_socialization approach. Three separate studies were carried out. In the first study, Domain_x0002_Specific Parenting Interview (DSPI) was developed to measure parenting quality in different socialization domains and its psychometric properties were examined. The deductive content analysis of the DSPI was carried out in the second study. In the third study, the replicability of the first study was tested, the interactions between different socialization domains were examined qualitatively, and the relations of mothers' knowledge on effective parenting and the quality of their parenting behaviors with developmental child outcomes were examined. The participants of the first study consisted of 82 mothers with children between 35-76 months. The participants of the second study consisted of 50 mothers, which were randomly selected from the data set of the first study. The participants of the third study consisted of 141 mothers and fathers, who have children aged between 47-72 months. The findings of the first study provided evidence that DSPI is a valid and reliable measurement tool. The qualitative findings of the second study showed that the domains-of-socialization approach and the daily life interactions of mother-child dyads were mostly consistent. The third study showed that the quality of parenting behaviors in different socialization domains were related to various child outcomes through emotion regulation and inhibitory control.Research Project Çinko Borat Üretim Teknolojisinin Geliştirilmesi ve Alev Geciktirici Olarak Kullanım Alanlarının AraştırılmasıWithin the scope of the project, 3.5 moles of crystalline aqueous zinc borate synthesis was made in a batch and continuous system, and the zinc borate produced was used in the production of polymer composites. Pilot production of zinc borate, which was synthesized within the scope of the project and whose optimum production parameters were determined, was carried out and the optimum values of the pilot production processes were determined. Zinc borate, whose pilot production has been successfully completed, is used as a fire retardant in wood and plastics. The industrialization of the pilot product was completed by transferring the production right to the private sector.Research Project (tr)ultrasonik Titreşim Destekli Frezelemenin Işlenmesi Zor Süper Alaşım Havacılık Malzemelerinde Nanoakışkan Minimum Miktar Yağlama Yöntemi ile Birlikte Incelenmesi/(eng)ınvestigation On The Effects Of Multi-axis Ultrasonic Vibration-assisted Milling With Nanofluid Minimum Quantity Lubrication On Difficult-to-cut Materials Used İn Aerospace IndustriesDue to the desired material properties in the aerospace sector, Ti-6Al-4V and Inconel 718 superalloys are commonly utilized. However, due to properties such as low thermal conductivity, high chemical interaction tendency, and resistance to wear, these materials pose significant challenges in machining processes, often characterized as "difficult-to-cut" materials. This project aims to experimentally investigate the combined use of Ultrasonic Vibration Assisted Machining (UVAM) and Nanofluid Minimum Quantity Lubrication (NMQL) techniques to improve the machining performance of Ti-6Al-4V and Inconel 718 superalloys, which are difficult-to-cut materials commonly employed in the aerospace sector. Within this scope, various cooling methods including conventional machining with UVAM, dry cutting with NMMY, conventional cutting fluid, and pure-MQL are comparatively studied, and the obtained results are analyzed. Three different nanofluids, namely Al2O3, CuO, and Al2O3-CuO (hybrid), are prepared and utilized in experiments when employing the NMMY technique. Machining performance criteria are determined as cutting forces, surface roughness, surface topography, surface texture, geometric accuracy, tool wear, and subsurface plastic deformation measurements. According to the results obtained, it is found that when UVAM and NMMY techniques are used together, the combination yields the highest efficiency in machining performance compared to other methods for both Ti-6Al-4V and Inconel 718 materials. Furthermore, among the NMMY conditions, the hybrid (Al2O3-CuO) usage provides the best results, followed generally by CuO and then Al2O3 added nanofluids. Based on the information and data obtained in this project, it is clearly evident that the yet underutilized UVAM and NMMY techniques, both separately and together, can be applied more efficiently in milling Ti-6Al-4V and Inconel 718 materials compared to traditional methods. This is anticipated to contribute to the aerospace manufacturing sector.Research Project Kişiselleştirilmiş ve Modüler Sosyal Robot Tasarımı İçin Yazılım Platformu Geliştirilmesi ve UygulanmasıIn this project, it is aimed to develop an interactive and conceptual design platform that can be used to develop personalized and modular social robots with the participatory design method and to apply it to physical robot models that serve as technology demonstrations.Research Project Synthesis, Characterization And Applications Of Various Aromatic Polythioureas Via Multicomponent Polymerization/çok Bileşenli Polimerizasyon Yöntemi ile Farklı Aromatik Politiyoürelerin Sentezi, Karakterizasyonu ve UygulamalarıIn recent years, multicomponent polymerization (MCP) method has attracted the attention of researchers due to its simple operation, high atom economy, high polymerization efficiency and high molecular weight of polymers without using catalyst under moderate conditions. In the MCP method used in the synthesis of different polythioamides and polythioureas, one of the reactants is aliphatic amines and aromatic amines are not used directly. Due to this reason, in polythioamide syntheses, it is seen that aromatic diamines do not react with alkynes in the presence of elemental sulfur and therefore they are converted firstly to aromatic diisocyanides and this increases the cost of synthesis. There is no study on the use of aromatic diamines directly in the synthesis of polythioureas. In the light of this information, it is aimed to use the MCP method which is thought to be an economic and effective method for the use of elemental sulfur and aromatic diamine directly to obtain well defined, functional and workable polymeric structures without using catalyst in the project. In the MCP method, diisocyanides which are more reactive than the dialkyne reactant used previously will be used. The reactivity of diisocyanides to aromatic amines was supported by literature data and preliminary studies performed by our group. In addition, elemental sulfur, one of the most abundant elements in the world, is a non-toxic and stable solid under normal conditions and is an inexpensive substance that is readily available even at high purity grades. The use of aromatic diamines directly with elemental sulfur is very interesting in terms of practical, cost-effective and synthetic compatibility. With the use of aromatic diamines in the MCP method, the gateway for the synthesis of different polythioureas will be further expanded. For this purpose, the synthesis of 10 different polythioureas shown below will be carried out and characterization of the obtained products (NMR, FTIR, GPC, SEM, UV-Vis, DSC, TGA) will be performed. The data obtained will be examined comparatively with the methods used before for the synthesis of polythioureas. Due to today's polluted environment and limited energy reserves, it becomes important to develop highly efficient renewable technologies, green energy sources and environmentally friendly methods for environmental remediation and energy production. In this direction, hydrogen production becomes so important in the field of energy. In addition, the removal of heavy metals found in nature and organic matter in waste water is of great importance in environmental remediation. From this point of view, the preparation of nanocatalysts that will allow hydrogen production and removal of organic substances and materials that provide heavy metal removal attracts the attention of scientists. Thanks to the thiourea functional groups in the structure of different polythioureas to be synthesized by the MCP method, it can be used in mercury treatment (due to the ability of the thiourea groups and mercury ions to be complex) as well as to be used as support materials for the production of silver, palladium and copper nanoparticles. In this respect, firstly mercury removal capacity of the prepared polymers will be investigated. Then, the polymer-metal nanoparticle hybrid materials (4 different structures, polymer/AuNPs, polymer/AgNPs, polymer/CuNPs and polymer/PdNPs)) will be obtained by adding gold, silver, copper and palladium nanoparticles (separately) onto the polymer having the highest metal ion-holding capacity. The stability, catalytic activity and the effect of the interaction on the catalytic activity of the polymer/metal nanoparticle hybrid materials will be investigated in hydrogeneration from amine borane and photocatalytical removal of dye molecules founded in waste waters, respectively.Research Project Plastikleştirilmiş Poli(laktik Asit)’in Alev Dayanımının Fosfor Bazlı Katkı Maddeleri ile GeliştirilmesiThe aim of this study is to improve the flame resistance and toughness of PLA by adding small amounts of different flame retardant additives and plasticizers at the same time. Poly(ethylene glycol) (PEG) was used as a plasticizer. Phosphate-based chemicals as flame retardant additives; ammonium polyphosphate (APP), boron phosphate (BP) and tri-phenyl phosphate (TPP) were used. Within the scope of the project, the synergistic effects of the double and triple compositions of these flame retardant additives were also examined. The mixtures are produced by melt blending and injection molding methods. The effect of the type and composition of flame retardant additives on the properties of PLA composites was determined by various mechanical, thermal and flammability tests.Research Project Preparation Of Magnetic Nanoparticles Which Enable The Use Of 18f-fdg As Multi-modal İmaging Agents İn Pet-mrı Applications/18f-fdg Nin Pet-mr Görüntüleme Uygulamalarında Multi-modal Görüntüleme Ajanı Olarak Kullanılmasına Yönelik Manyetik Nanoparçacıkların HazırlanmasıIt is becoming increasingly evident that PET-MRI multi-modal imaging systems have great potential in practical medicine and for basic scientific research. Consequently there is a wide interest in developing proper imaging agents for these applications. Superparamagnetic iron oxide (SPIO) nanoparticles are already, extensively, being used as MRI contrast agents. The labeling of these nanoparticles with radioactive isotopes provides a new generation for MRI agents. Combination of the required properties, in the body of the same sample for both measurement techniques, ensures that both images are coming from the same spot and simultaneously. This approach provides more accurate and reliable data for diagnosis and treatment of the illness. One of the candidates of the applicable radioactive isotopes is 18F, an easily available one and is being produced in our country. However its chemical binding to delivery agents requires several steps of exhaustive chemical treatments. A laboratory/firm which tends to fabricate iron oxide nanoparticles labeled with 18F should reconstruct a new manufacturing plant, which needs a laborious and a quite expensive operation. Instead, a new process, which can convert already available PET contrast agents into PET-MRI agents without requiring any special expertise, would be more practical and economical.Research Project Lineer Olmayan Üçlü Schrödinger Denklemi İçin Yapı Koruyan Sayısal Yöntemler(2016) Ertuğ, Sevim; Aydın, AyhanA nonlinear implicit energy-conserving scheme and a linearly implicit mass-conserving scheme are constructed for the numerical solution of a three-coupled nonlinear Schrödinger equation. Both methods are second order. The numerical experiments verify the theoretical results that while the nonlinear implicit scheme preserves the energy, the linearly implicit method preserves the mass of the system. In addition, the schemes are quite accurate in the preservation of the other conserved quantities of the system. Elastic collision, creation of new vector soliton, and fusion of soliton are observed in the solitary wave evolution. The numerical methods are proven to be highly efficient and stable in the simulation of the periodic and solitary waves of the equation in long terms. Dispersive analysis of the equation and the numerical methoda is investigated.Research Project : Synthesis Of Electroactive Chemiluminescent Compounds And Polymers For Blood Detection İn Forensic/adli-tıpta Kan Teşhisi için Elektroaktif Kemilüminesans Bileşiklerin ve Polimerlerin SenteziProject Summary Combination of pyridazine based and chemiluminescent units with electroactive compounds and conjugated polymers have been taken place recently. These compounds and conjugated polymers have been reported to be used instead of luminol in order to detect blood traces in forensic science. These studies resulted in the birth of a new series of compounds so-called “luminol-type compounds”. In this study, a new series of chemiluminescent and conjugated trimeric compounds bearing pyridazine ring (Scheme 1) and their polymers will be synthesized and characterized structurally. Then, their chemiluminescent properties and forensic applications (blood detection) will be scrutinized. Scheme 1. Chemical structure of the compounds bearing redox active terminals and chemiluminescent pyridazine units In order to achieve this aim, phthalic anhydride will be utilized to synthesize the target molecules in three steps. This will be advantageous when compared the synthesis of some luminol derivatives which require multiple steps. After the completion of the structural characterization of the compounds, the chemiluminescent reactions of the compounds in basic medium will be tested firstly in the presence of only hydrogen peroxide and then together with various metal cations as catalyst by using a photomultiplier tube. If iron ion is found to exhibit a catalytic role in the chemiluminescent process, the application of blood trace detection in forensic will be studied. First of all, hemin as a hemoglobin analogue will be used to get a standard curve and then the blood samples will be studied. Obtained data will be compared with luminol and its derivatives and also the effect of the substituents (electron donating units: furan, thiophene and selenophene) of the compounds on the chemiluminescent process will be investigated. Next step will be the electrochemical polymerization of the compounds. The structural analyses of the polymers will be studied by using voltammetric and spectroscopic methods (cyclic voltammetry, NMR, FTIR, UV-vis, SEM, GPC, etc.). Chemiluminescent properties and forensic applications of their polymers will also be studied. Furthermore, since the polymers can be obtained as films via electrochemical polymerization, the electrochemiluminescent properties of these polymers will also be investigated. In addition to the polymers’ structural characterization, their electrochemical and optical properties will be studied to search for their possible opto-electronic applications. When the project has reached to its aims, a new series of the chemiluminescent compounds will be synthesized after only a few steps by starting with a cheap compound called phthalic anhydride. Unfortunately, the interest of the present luminol type compounds in the literature is limited since they are synthesized in multiple steps. A new series of the compounds will be obtained for the family of luminol type compounds when the syntheses of the compounds are realized. Due to the systematic synthesis of the compounds (Group 6A: O (furan), S (thiophene), Se (selenophene) atoms used for the same template compound), the effect of the electron donating units will be investigated on the chemiluminescent property. In conclusion, new compounds that are alternative to the luminol used in forensic application will be brought into the literature.Research Project Lisans Dersleri için Zaman Serisi ile Açılacak Şube Sayısı ve Kontenjanlarını Tahmin Eden Yapay Zekâ Sisteminin GeliştirilmesiThis project aims to address the problems experienced in traditional methods used in determining course quotas and number of sections in universities. This project, carried out with the support of Atılım University Undergraduate Research Projects, aims to optimize this process by using machine learning models. In the project, XGBoost and LightGBM were examined and their ability to make high-accurate predictions was tested.