Istanbul Technical University
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Highly sensitive OFET based room temperature operated gas sensors using a thieno[3,2-b]thiophene extended phthalocyanine semiconductor
No full textA novel thienothiophene (TT) and phthalocyanine (Pc) based conjugated material was designed, synthesized, fabricated for an organic field effect transistor (OFET) and utilized as an OFET based gas sensor for hazardous gases such as NO2 and SO2.https://doi.org/10.1039/d4tc03208jhttps://research.manchester.ac.uk/en/publications/41ad6d65-0dbf-4af1-93ce-5479ccc6eb1chttps://doi.org/10.1039/D4TC03208Jhttps://www.scopus.com/pages/publications/85209119050https://pure.manchester.ac.uk/ws/files/348772377/Highly_Sensitive_OFET_Based_Room_Temperature_Operated_Gas_Sensors_Using_Thieno_3_2-b_thiophene_Extended_Phthalocyanine_Semiconductor.pdfhttps://aperta.ulakbim.gov.tr/record/27555
Koro performansında koreografi yaratımı, uygulaması ve analizi ile bir notasyon sistemi önerisi
No full textThesis (M.Sc.) -- Istanbul Technical University, Graduate School, 2025This thesis explores the integration of choreography into choral performances, framing concerts as multi-sensory experiences that engage both auditory and visual perception. The core objective of the study is to explore choreography creation processes and to analyze how movement is used as a tool to enhance musical expression and narrative design. The methodology combines ethnographic fieldwork including participant observation and conversations with fellow singers, developing a movement notation system for musicians' use and analyses of scores and videos. The literature review contains historical and perceptual connections between music and movement, movement in choral history, existing movement notation systems and movement classifications. Field research draws from the author's personal experience as a choral performer and a composer. This section explores the choreography creation processes and the reasoning behind them. This section exhibits that the creation process is usually a collaborative one and most of the time it happens close to the concert. The source of inspiration for creation is usually the lyrics or cultural connotations, sometimes other performances. Recognizing a gap in standardized movement notation systems tailored for musicians, the study introduces a newly developed notation system. This notation system encompasses hands, arms, body direction, steps, and spatial formations. This innovation is both a creative and analytical tool, aiming to document and communicate choreographic elements in a structured way. In the analysis section, selected performances are examined using the proposed system. On top of the hand, step and body direction movements, movement in space, movement of soloists and cultural influence on movement are also presented and the expressive potential of choreographed elements are discussed. The analysis revealed consistent correlations between musical and physical gestures in choral performances. Movements often reflect musical qualities - legato lines are matched with smooth, continuous motion, while slow arm raises frequently accompany glissandos, crescendos, or ascending melodic lines. Rhythmic patterns are visually emphasized through swaying or stepping, which can also introduce new rhythmic layers or reframe subdivisions. Movement phrases tend to mirror musical phrases, and choreographic tools like soloist isolation, formation changes, and gesture cues signal structural or expressive shifts. Repeated musical material is sometimes varied visually through choreographic additions, while contrapuntal movement can parallel musical polyphony. Spatial orientation is used dynamically - choirs face the audience during forte passages and turn away or shift position for softer dynamics, especially at conclusions. Strategic stillness, gesture-based cadential emphasis, and narrative or literal movements further enrich the performance. Cultural context also shapes choreography; various choirs incorporate regional dance elements into their movement language, enhancing both visual identity and interpretive depth. These culturally rooted gestures, drawn from folk or traditional forms, contribute to a more immersive and resonant concert experience. The conclusion highlights the study's contributions to choral composition and performance practices, emphasizing the importance of codifying movement not as a restrictive framework but as a means to enhance artistic expression. It also outlines possible directions for further research, such as broader audience studies and implementation of the system in varied choral repertoires.M.Sc
Sensor Synergy in Bathymetric Mapping: Integrating Optical, LiDAR, and Echosounder Data Using Machine Learning
No full textBathymetry, the measurement of water depth and underwater terrain, is vital for scientific, commercial, and environmental applications. Traditional methods like shipborne echosounders are costly and inefficient in shallow waters due to limited spatial coverage and accessibility. Emerging technologies such as satellite imagery, drones, and spaceborne LiDAR offer cost-effective and efficient alternatives. This research explores integrating multi-sensor datasets to enhance bathymetric mapping in coastal and inland waters by leveraging each sensor’s strengths. The goal is to improve spatial coverage, resolution, and accuracy over traditional methods using data fusion and machine learning. Gülbahçe Bay in İzmir, Turkey, serves as the study area. Bathymetric modeling uses Sentinel-2, Göktürk-1, and aerial imagery with varying resolutions and sensor characteristics. Model calibration evaluates independent and integrated use of single-beam echosounder (SBE) and satellite-based LiDAR (ICESat-2) during training. After preprocessing, Random Forest and Extreme Gradient Boosting algorithms are applied for bathymetric inference. Results are assessed using accuracy metrics and IHO CATZOC standards, achieving A1 level for 0–10 m, A2/B for 0–15 m, and C level for 0–20 m depth intervals.https://doi.org/10.3390/rs1716291
Microbial Production of Chondroitin
No full texthttps://doi.org/10.1007/978-3-031-90974-0_42https://doi.org/10.1007/978-3-030-81403-8_42-
Perspective on Current Advances and Future Directions in Food Safety and Health
No full textABSTRACTRecent advances in food safety and health have been driven by technological innovation, regulatory reform, increased consumer awareness, and recognition of the clinical importance of functional ingredients. These developments aim to reduce the risks associated with foodborne illness, improve the nutritional quality of food, and enhance overall public health. Emerging technologies, such as blockchain for supply chain transparency, artificial intelligence for predictive analytics, and novel preservation methods, are transforming food safety practices. Concurrently, the integration of functional ingredients, such as polyunsaturated fatty acids, dietary fibers, probiotics, and bioactive peptides, into daily diets is gaining attention for their potential in preventing chronic diseases and supporting long‐term health. Global regulatory frameworks are also being strengthened to ensure compliance with safety standards. Future directions in food safety are likely to focus on integrating these technologies and nutritional strategies with traditional methods, fostering international collaboration, and addressing the challenges posed by climate change and globalization. This perspective provides a comprehensive overview of current advances in food safety, discusses emerging trends, and explores future directions, emphasizing the critical role of innovation, policy, and nutrition in protecting public health.https://doi.org/10.1002/fsh3.12085https://avesis.atauni.edu.tr/publication/details/d8161599-4f0f-47d4-af4e-d8dedc0c6491/oa
Fabrication of Multifunctional Nanofiber Mats by Emulsion Electrospinning of TPU/Fish Skin Gelatin Incorporating Plant Extract‐Based Therapeutic Oil for Wound Dressing Applications
No full textAbstractIn this study, for the first time thermoplastic polyurethane (TPU), fish skin gelatin (FSG), and H. perforatum oil (HPO) combine to form a new nanofiber material by using the emulsion electrospinning technique. Scanning electron microscope (SEM), Fourier transform infrared (FTIR) spectroscopy, and thermogravimetric analysis (TGA) are used for the characterization studies. Moreover, antibacterial activities, in vitro wound healing and cytotoxicity of the TPU mats are also investigated. The SEM investigations reveal that the average diameters of defect‐free TPU nanofiber mats with diverse HPO concentrations are ≈400–500 nm and suitable to mimic the native extracellular matrix (ECM) with these values. Moreover, although there is no antibacterial activity in the control TPU mat, the addition of the tannic acid crosslinker and 12% of HPO to the nanofiber mat acquires a 31.3% inhibition against Staphylococcus aureus and a 21.0% against Escherichia coli. Furthermore, the TPU nanofiber mat with the highest HPO concentration (12%) is non‐toxic to the cells and tends to promote healing in vitro assay. Overall results indicate that the wound healing properties of the obtained HPO‐encapsulated TPU nanofiber mats can be a promising candidate for wound dressing applications.https://doi.org/10.1002/mame.20250001
A Data-Driven Fuzzy Performance Evaluation System for E-commerce Platforms
No full texthttps://doi.org/10.1007/978-3-031-98304-7_8
Overview of Detector Physics
No full textThis presentation, titled “Overview of Detector Physics,” provides a concise summary of the fundamental principles and applications of modern particle detectors. It introduces the main detector types, their operating mechanisms, and their role in experimental high-energy physics. The material was prepared in an educational context to serve as a resource for instructor, undergraduate students, and anyone interested in the basics of detector physics. This version corrects a typo in the ISBN number of one reference in the bibliography.https://dx.doi.org/10.5281/zenodo.17084817https://dx.doi.org/10.5281/zenodo.17084097https://dx.doi.org/10.5281/zenodo.17071290https://dx.doi.org/10.5281/zenodo.1707129
Disposable Piezoresistive MEMS Airflow Sensor for Chronic Respiratory Disease Detection
No full texthttps://doi.org/10.1109/jmems.2024.348422
Lorentzian manifolds with a special type of semi-symmetric non-metric connection and modified gravity
No full textThis paper investigates a spacetime equipped with a special type of semi-symmetric non-metric connection. If the associated vector field for this spacetime has some properties, then the nature of this spacetime has been investigated. On the other hand, we prove that this spacetime represents a perfect fluid spacetime as well as GRW spacetime. Moreover, we show that this spacetime reduces to stiff matter, dark matter era or Minkowski spacetime under some special conditions. In the third part of this paper, we consider [Formula: see text]-gravity as a modified gravity theory on this spacetime. Some remarkable theorems for such a spacetime are proved.https://doi.org/10.1142/s021773232550135