Fakülteler / Faculties

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    Adaptations in the Sound Era 1927-37
    (2016) Raw, Laurence
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    Adapting Graham Greene
    (2016) Raw, Laurence
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    An Aloha Based Throughput Analysis For Cognitive Radio Applications in Tv Bands
    (2014) Tuncer, A. Turgut
    Since existing spectrum is limited and could not efficiently be used, new ways to solve this problem are brought forth. The unused bands currently allocated to TV broadcasting services can be opportunistically reassigned to support broadband networking services while continuing to provide broadcast TV The fragmented and unused TV channels have considerable amount of bandwidth potential and long transmission ranges. This paper considers an OFDM based wireless communications system using TV bands. To make a good use of spectral resources, two OFDM paradigms, ie., Fixed Carrier Spacing (FCS) and Fixed Carrier Number (FCN), have been investigated deeply for Aloha-Medium Access Control protocol in TV white spaces.
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    And Then We Work for God: Rural Sunni Islam in Western Turkey
    (2014) Eligur, Banu; AFR-3489-2022
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    Beware of Imitations: All about Eve (1950)
    (2016) Raw, Laurence
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    Biomolecular Markers for Improving Management of Follicular and Medullary Thyroid Cancer
    (2014) Mousa, Umut; Anil, Cuneyd; Isildak, Serife Mehlika; Gursoy, Alptekin; Carpi, Angelo; https://orcid.org/0000-0002-8078-9376; https://orcid.org/0000-0003-3802-9733; https://orcid.org/0000-0002-2602-1657; I-1735-2018; AAA-4216-2021
    Thyroid cancer usually presents as a thyroid nodule. According to different reports, more than 95% of thyroid nodules are benign. The gold standard for preoperative diagnosis of thyroid cancer is fine-needle aspiration cytology (FNAC). Especially in diagnosing medullary thyroid carcinoma (MTC) and some cases of well-differentiated thyroid carcinomas, biomolecular markers are proposed to increase the diagnostic value of FNAC. In this chapter, we mainly focused on classification, genetics, use of biomolecular and invasive markers, as well as treatment of follicular thyroid cancer (FTC) and MTC. In the case of FTC, some molecular and immunohistochemical markers are proposed and are currently under investigation principally for improving preoperative diagnosis. Unlike MTC, there is no powerful biomarker such as calcitonin (Ct) for FTC diagnosis. In the follow-up, serum thyroglobulin (Tg) and whole-body iodine-131 scintigraphy are effective. MTC has relatively poor prognosis. Postsurgical therapy is scarcely effective. Blood Ct is the best studied and preferred marker in the diagnosis and follow-up of MTC. It can be measured in the basal state or after provocative stimuli such as pentagastrin and high-dose calcium. Carcinoembryonic antigen (CEA) and chromogranin A (CgA) are the other markers currently used for selected cases. Ct and CEA doubling times are gaining importance for the prognosis of MTC. The importance of rearranged during transfection (RET) proto-oncogene screening in MTC is also discussed in this chapter. RET has also become a therapeutic target. In conclusion, the management of FTC and MTC includes diagnostic and therapeutic problems. However, thanks to the development of translational medicine, the biomolecular marker studies are improving FTC and MTC diagnosis, prognosis, and therapy.
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    Calibration Transfer Between E-Noses
    (2014) Guney, Selda; Fernandez, Luis; Marco, Santiago; https://orcid.org/0000-0002-0573-1326; AAC-7404-2020
    Electronic nose is an instrument which is composed of gas sensor array and pattern recognition unit. It is generally used for classifying, identifying or quantifying the odors or volatile organic components for these commonly used devices, calibration transfer is an important issue because of differences in each instrument, sensor drift, changes in environmental conditions or background changes. Calibration transfer is a transfer of model between different instruments which have different conditions. In this study, calibration transfer is applied to the e-noses which have different temperature conditions. Also the results of the direct standardization, piecewise direct standardization and orthogonal signal correction which are different calibration methods were compared. The results of the piecewise direct standardization method are more successful than the other methods for the dataset which is used in this study.
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    Dashiell Hammett and The Movies
    (2016) Raw, Laurence
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    Detection of Microrna Clusters Associated with Prostate Cancer
    (2014) Haberal, Ismail; Ogul, Hasan; https://orcid.org/0000-0002-8647-4295; AAJ-8956-2021
    MicroRNAs (miRNAs) are a class of small non-coding RNAs of 22 nucleotides which normally function as negative regulators of target mRNA expression at the posttranscriptional level. miRNAs play a role for one or more target genes by suppressing in processes as growth, differentiation, proliferation and cell death. Recent evidence has shown that miRNA mutations or mis-expression correlate with various human cancers and indicates that miRNAs can function as tumour suppressors and oncogenes. MicroRNAs have been shown to repress the expression of important cancer-related genes and might prove useful in the diagnosis and treatment of cancer. In this study, hierarchical microRNA clusters are obtained through microarray expression data in order to analyze the microRNA prostate cancer relationships. Clustering results are evaluated by their biological relevance. It is seen that such approach can be useful in detectitn relationships between microRNAs and diseases.
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    Dual Band Antenna Design for Long Term Evolution Applications
    (2014) Degerliyurt, Dilara; Isik, Gulsum; Can, Sultan; Yilmaz, A. Egemen
    In this study antenna geometries for use in Long Term Evolution (LTE) applications are presented. The proposed antennas are designed in a shape of U, they are fed by coax, and such geometry achieves dual frequency operation. All the proposed geometries are simulated via CST and Ansoft HFSS software, and the results are assessed as regards return loss, operating frequency, bandwidth, and standing wave ratio. In addition, the literature review is also presented for LTE systems and for the antennas usually preferred in LTE systems.
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    Estimating Land Cover Type And Proportıon Of Vegetation Using Remote Sensing
    (2014) Erol, Cemil Berin; Tanyer, Suleyman Gokhun; https://orcid.org/0000-0001-9506-2391; I-5023-2013
    Estimation of the land cover type and proportion of vegetation using NASA's EOS/MODIS data is verified as a case study for Turkey where 7 locations were selected. The correlation between the NDVI/EVI data is analyzed. EVI is shown to be slightly more accurate than NDVI. Land cover types are determined for these 7 locations, and similar to other locations, Istanbul and Samsun are found to perfectly match the 'forest type' Izmir is found to be different from the currently available land cover types which are assumed to be due to its mixed canopy structure. Annual and monthly average measurements in various bands are analyzed and expected correlation with the number of days of precipitation is observed.
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    An Exergy-Based Algorithm for Optimizing CHP Systems in Health Facilities
    (2014) Kilkis, Birol I.
    Health facilities have diverse thermal and electrical loads with challenging profiles and non-coincident peaks. This paper lays the basic optimization algorithm, with two objectives, namely minimizing CO2 emissions and reducing the pay-back period of the investment. The algorithm is based on the Rational Exergy Management Model and searches the optimum CHP capacity with the objective of maximum exergy efficiency. The algorithm also factors in the negative effect of tree cutting on CO2 sequestration potential, which often occurs in the construction of very large new hospitals. Four building scenarios were analyzed, one which is a business as usual type of health facility building and the fourth one is a near net-zero energy and exergy building. Results show that the optimization search may substantially increase the exergy efficiency, fuel savings, and reduce CO2 emission by up to 50%.
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    Feasıbility of Heart Rate Variability Analysis With Heart Sounds
    (2014) Yildiz, Metin; Turkoglu, Zeynep; https://orcid.org/0000-0002-2554-6953; JJF-5070-2023
    Heart rate variability (HRV) analysis, which is providing information about the autonomic nervous system with non-invasive method, performed with using digitized electrocardiogram records. In this study, whether HRV analysis can be done from heart sounds (which are recorded with electronic stethoscopes) has been investigated. For this purpose, an algorithm has been developed for detecting the consecutive heart time period from simultaneously recorded heart sounds and ECG. Some standard HRV parameters are calculated and compared from the HRV derived from ECG and heart sound signals. The experimental results show that, both HRV parameters derived from the heart sounds while the resting position and the ECG are very close. In conclusion, they can be used in HRV analysis.