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RISS 인기검색어
- 검색키워드
- 저자 : Kurt Unal (검색결과 2 건)
- 무료
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Probabilistic Power Flow Analysis Using Matlab Graphical User Interface (GUI)
Kurt Unal,Ozgonenel Okan,Ayvaz Birsen Boylu 대한전기학회 2022 Journal of Electrical Engineering & Technology Vol.17 No.2
In today’s power systems, there are renewable energy sources such as wind energy systems and solar energy systems. Renewable energy sources cause extra power fl uctuation in the system. Rising of the fl uctuation incresas the uncertainties of the power system. Since deterministic methods that do not contain uncertainty because of using certain fi xed values instead of probabilistic values, these methods can not give reliable results under uncertainties. Therefore, statistical load fl ow, also known as probabilistic load fl ow, has taken its place as a new title in the literature in order to overcome the defi ciencies of conventional load fl ow methods which do not contain uncertainty. In this study, a comparative analysis of Monte Carlo simulation with Latin Hypercube sampling method and Unscented transformation methods are presented. These methods are compared with the results obtained from the classical Monte Carlo simulation method. IEEE 14 and 30 bus test systems and Ondokuz Mayıs University campus distribution system were chosed as a test system for the application of the proposed methods. The results show that Unscented transformation method is faster and more reliable than the other two methods.
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Molecular Markers for Patients with Thymic Malignancies: not Feasible at Present?
Avci, Nilufer,Cecener, Gulsah,Deligonul, Adem,Erturk, Elif,Tunca, Berrin,Egeli, Unal,Tezcan, Gulcin,Akyildiz, Elif Ulker,Bayram, Ahmet Sami,Gebitekin, Cengiz,Kurt, Ender,Evrensel, Turkkan Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.8
Background: Thymomas and thymic carcinomas are rare malignancies and devising clinically effective molecular targeted therapies is a major clinical challenge. The aim of the study was to analyze BLC2 and vascular endothelial growth factor receptor (VEGFR) expression and KRAS and EGFR mutational status and to correlate them with the clinical characteristics of patients with thymomas and thymic carcinomas. Materials and Methods: A total of 62 patients (mean age: $50.4{\pm}13.2$ years) with thymomas and thymic carcinomas were enrolled. The expression of BLC2 and VEGFR in tumor cells and normal tissues was evaluated by RT-PCR. The mutational status of the KRAS and EGFR genes was investigated by PCR with sequence specific primers. Results: The BLC2 and VEGFR expression levels did not differ significantly between tumor and normal tissues. Moreover, there were no clearly pathogenic mutations in KRAS or EGFR genes in any tumor. None of the molecular markers were significantly related to clinical outcomes. Conclusions: Changes in levels of expression of BLC2 and VEGFR do not appear to be involved in thymic tumorigenesis. Moreover, our data suggest that KRAS and EGFR mutations do not play a major role in the pathogenesis of thymomas and thymic carcinomas.
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