Evaluation of the Pergamon Asklepieion with the medical point of view.

TEZ8896Tez (Doktora) -- Çukurova Üniversitesi, Adana, 2013.Kaynakça (s. 106-112) var.xi, 114 s. : res. ; 29 cm.

Sıkı bağlı ANS/KKS tümleştirmesinde uyarlamalı kokusuz kalman filtresi uygulaması.

In order to overcome the various disadvantages of standalone INS and GPS, these systems are integrated using nonlinear estimation techniques and benefits of the two complementary systems are obtained at the same time. The standard and most widely used estimation algorithm in the INS/GPS integrated systems is Extended Kalman Filter (EKF). Linearization step involved in the EKF algorithm can lead to second order errors in the mean and covariance of the state estimate. Another nonlinear estimator, Unscented Kalman Filter (UKF) approaches this problem by carefully selecting deterministic sigma points from the Gaussian distribution and propagating these points through the nonlinear function itself leading third order errors for any nonlinearity. Scaled Unscented Transformation (SUT) is one of the sigma point selection methods which gives the opportunity to adjust the spread of sigma points and control the higher order errors by some design parameters. Determination of these parameters is problem specific. In this thesis, effects of the SUT parameters on integrated navigation solution are investigated and an “Adaptive UKF” is designed for a tightly-coupled INS/GPS integrated system. Besides adapting process and v measurement noises, SUT parameters are adaptively tuned. A realistic fighter flight trajectory is used to simulate IMU and GPS data within Monte Carlo analysis. Results of the proposed method are compared with standard EKF and UKF integration. It is observed that the adaptive scheme used in the sigma point selection improves the performance of the integrated navigation system especially at the end of GPS outage periods.M.S. - Master of Scienc

Financial Manager Selection with Analytic Network Process Method in Public Hospitals

The fact that the vast majority of hospital enterprises are publicly owned, and that management technology is guided by public regulations obliges that hospitals conform to the professional management characteristics of both the general management and the financial structure. Considering to conditions in Turkey, it is seen that an important position as finance director is undertaken mostly by physician’s managers. In public hospitals, it is important to know which criteria are in effect when measuring the qualifications or levels of knowledge of financial managers, or employees. While determining this, multi-criteria decision-making methods are helping to overcome the difficulties that may arise in the decision-making process. In this study, it was determined factors affecting the selection of financial managers in public hospitals. Then, the weights of these factors were calculated by the Analytical Network Process (ANP) method, which is a multi-criteria decision method. The application was made in a public hospital in Kırıkkale and the candidates were selected. According to the results obtained by working; the strongest candidate is the head of financial services with a share of 33%, followed by the treasurer of circulating capital with an equity of 25%

Financial Manager Selection with Analytic Network Process Method in Public Hospitals

Hastane işletmelerinin büyük çoğunluğunun kamu sahipliğinde bulunması ve yönetim teknolojilerinin kamu düzenlemeleriyle yönlendirilmesi, hastane işletmelerinin gerek genel yönetim gerekse finans yapısının profesyonel yönetim özelliklerine uymasını zorunlu kılmaktadır. Türkiye şartlarına bakıldığında; finans yöneticiliği gibi önemli bir pozisyonun çoğunlukla hekim yöneticilerce üstlenildiği görülmektedir. Kamu hastanelerinde, herhangi bir unvan ile finans yöneticisi pozisyonunda ya da bu departmanlarda çalışanların finans konusundaki yeterliliklerini ya da bilgi düzeylerini belirlerken hangi kriterlerin etkili olup olmadığının belirlenmesi amacıyla karar verme sürecinde yaşanabilecek zorlukların üstesinden gelmede yardımcı olan çok ölçütlü karar verme yöntemleri ön plana çıkmaktadır. Bu çalışmada kamu hastanelerinde finansal yönetici seçimini etkileyen faktörler belirlenerek çok ölçütlü karar verme yöntemlerinden Analitik Ağ Süreci (AAS) yöntemi ile ağırlıkları hesaplanmıştır. Kırıkkale’de bir kamu hastanesinde yapılan uygulama ile aday kişiler arasından seçim yapılmıştır. Çalışmadan elde edilen sonuçlara göre; en güçlü aday %53’lük önem derecesiyle mali hizmetler başkanı olurken, onu %22’lik önem derecesiyle döner sermaye saymanı izlemektedir

Microplastics in a dam lake in Turkey: type, mesh size effect, and bacterial biofilm communities

Çırak, Tamer ( Aksaray, Yazar )The evaluation of microplastic (MP) pollution has been drawing attention for the last decades. MP pollution has been studied widely in marine environments, but limited data exists for freshwater ecosystems on potential source and transport of MPs. The type, shape, plastic components, and the color of the MPs were investigated using various-mesh-sizes (300 and 100 μm) nets in four sampling stations of Süreyyabey Dam Lake in Turkey. The growth of bacterial isolates on the MPs surface and surrounding water was also investigated. The type of the MPs and the interaction between the mesh size and the type of the MPs showed significant differences (p < 0.05). Fibers were found to be the most abundant particle type constituting 45% and 80% of the total MPs found in 330-μm and 100-μm mesh sizes, respectively. In total the observed MP abundance in the dam lake was 5.25 particles m−3, and 4.09 particles m−3 was observed for 100-μm and 330-μm mesh sizes, respectively. The color of the identified microplastics showed variations among microplastic types; however, the dominant color was transparent in each net. The main plastic components of the MPs are polyethylene terephthalate, polyvinyl chloride, polystyrene, polyethylene, and polypropylene. The microbial community mainly consists of potentially pathogenic strains such as Escherichia coli, Enterococcus faecalis, and Acinetobacter baumanii complex. The current study could contribute valuable background information both for MP pollution and for biofilm composition in a dam. However, the surface of the MPs and biofilm formation should be investigated urgently to understand the vector potential of MPs

Thermoluminescence properties of Tb doped Mg2SiO4 after beta irradiation

In this study, we performed Thermoluminescence (TL) experiments to extract the trapping parameters and dosimetric properties of Tb-doped Mg2SiO4 phosphors. Glow peaks located at 193, 270, and 350 degrees C were observed in the glow curve but the peak at 193 degrees C was especially investigated as a dosimetric peak in this study. We also observed an anomalous heating rate effect in which the maximum TL intensity of the glow curve augmented with an increasing heating rate. The computerized glow curve deconvolution (CGCD) method, initial rise (IR) and Hoogenstraaten's method were used to determine the activation energies of associated trapping centers for both BSL-TL 365 nm and IRSL-TL wideband blue filters. The TL characteristics of this phosphor indicate that Mg2SiO4:Tb3+ could be a promising material for dosimetric applications. Efforts should be made to improve the fading behaviour by adding other activators as co-dopants.Cukurova University (FAY-2015-4735

Natural Radioactivity Study of Soil Samples from Some Villages in Mersin

The aim of this study is to determine the level of natural radioactivity occured by radionuclides, 226Ra, 232Th and 40K, in soil samples collected from some villages in Mersin, Turkey. The mean activity concentrations of 226Ra, 232Th and 40K are measured over all collected soil samples as 19.96 ± 2.34 Bq/kg, 42.8 ± 3.28 Bq/kg and 388.68 ± 5.26 Bq/kg, respectively using gamma ray spectroscopy by HPGe dedector. It was observed that these activity concentrations are mostly in agreement with the world activity averages of 35, 30 and 400 Bq/kg for 238U, 232Th and 40K, respectively, indicated in UNSCEAR 2008 report. Mean 232Th activity was achieved a bit higher than the avarage. However, the average annual effective dose equivalent was calculated as 0.062 mSv/y and found to be lower than the worldwide avarage value of 0.063 mSv/y.Çukurova University (FBA-2015-4478 / FBA-2017-9055

Regional Clinical and Biochemical Differences among Patients with Primary Hyperparathyroidism

This study had been presented at the 6th ESES Biennial Scientific Meeting held in Cardiff (15-17 May 2014).Address for Correspondence: Dr. &Ouml;zer Makay, Department of General Surgery, Division of Endocrine Surgery, Ege University School of Medicine, İzmir, TurkeyPhone: +90 232 390 50 50 Received: 13 July 2015 e-mail: [email protected]: 27 January 2016 o DOI: Background: Environmental habitat may play a role in clinical disparities of primary hyperparathyroidism (pHPT) patients. Aims: To compare preoperative clinical symptoms and associated conditions and surgical findings in patients with pHPT, living in different geographical regions from the Black Sea, Mediterranean and Anatolia regions. Study Design: Retrospective, clinical-based multicentric study of 694 patients with pHPT.Methods: Patients from 23 centers and 8 different geographical regions were included. Data related to baseline demographics, clinical, pathologic and treatment characteristics of 8 regions were collected and included age, gender, residential data, symptoms, history of fracture, existence of brown tumor, serum total Ca and p levels, serum parathormone (PTH) levels, serum 25-OH vitamin D levels, bone mineral density, size of the resected abnormal parathyroid gland(s), histology, adenoma, and multiple endocrine neoplasia (MEN)- or familial-related disease.Results: The median age was 54. Asymptomatic patient rate was 25%. The median PTH level was 232 pg/mL and serum total Ca was 11.4 mg/dL. Eighty-seven percent of patients had an adenoma and 90% of these had a single adenoma. Hyperplasia was detected in 79 patients and cancer in 9 patients. The median adenoma size was 16 mm. Significant parameters differing between regions were preoperative symptoms, serum Ca and p levels, and adenoma size. All patients from South-East Anatolia were symptomatic, while the lowest p values were reported from East Anatolia and the largest adenoma size, as well as highest Ca levels, were from Bulgaria.Conclusion: Habitat conditions vary between geographical regions. This affects the clinicopathological features of patients with pHPT.This study had been presented at the 6th ESES Biennial Scientific Meeting held in Cardiff (15-17 May 2014).Address for Correspondence: Dr. &Ouml;zer Makay, Department of General Surgery, Division of Endocrine Surgery, Ege University School of Medicine, İzmir, TurkeyPhone: +90 232 390 50 50 Received: 13 July 2015 e-mail: [email protected]: 27 January 2016 o DOI: Background: Environmental habitat may play a role in clinical disparities of primary hyperparathyroidism (pHPT) patients. Aims: To compare preoperative clinical symptoms and associated conditions and surgical findings in patients with pHPT, living in different geographical regions from the Black Sea, Mediterranean and Anatolia regions. Study Design: Retrospective, clinical-based multicentric study of 694 patients with pHPT.Methods: Patients from 23 centers and 8 different geographical regions were included. Data related to baseline demographics, clinical, pathologic and treatment characteristics of 8 regions were collected and included age, gender, residential data, symptoms, history of fracture, existence of brown tumor, serum total Ca and p levels, serum parathormone (PTH) levels, serum 25-OH vitamin D levels, bone mineral density, size of the resected abnormal parathyroid gland(s), histology, adenoma, and multiple endocrine neoplasia (MEN)- or familial-related disease.Results: The median age was 54. Asymptomatic patient rate was 25%. The median PTH level was 232 pg/mL and serum total Ca was 11.4 mg/dL. Eighty-seven percent of patients had an adenoma and 90% of these had a single adenoma. Hyperplasia was detected in 79 patients and cancer in 9 patients. The median adenoma size was 16 mm. Significant parameters differing between regions were preoperative symptoms, serum Ca and p levels, and adenoma size. All patients from South-East Anatolia were symptomatic, while the lowest p values were reported from East Anatolia and the largest adenoma size, as well as highest Ca levels, were from Bulgaria.Conclusion: Habitat conditions vary between geographical regions. This affects the clinicopathological features of patients with pHPT

A Preliminary Study of TL and OSL Traps for the Aragonite Mineral

Luminescence (thermoluminescence (TL) and optically stimulated luminescence (OSL)) methods are important for dosimetric studies. Understanding the TL and OSL traps of dosimetric materials is critical to explain their different and similar properties. In this study, TL and OSL signals of natural aragonite mineral were recorded using lexsyg smart TL/OSL reader after different beta irradiations. TL and OSL trap properties were compared with each other using the obtained TL glow curves and OSL signals. In sequential measurements, while the TL signals were observed after the OSL measurements, the OSL signals were not observed after the TL measurements. In conclusion, TL and OSL traps are located close to each other within the band gap of aragonite mineral and the OSL traps affect the TL signals if the TL measurements are done firstly.Cukurova University, FED-2017-804

Normal and anomalous heating rate effects on thermoluminescence of Ce-doped ZnB2O4

The effect of heating rate (HR) on thermoluminescence (TL) glow curves of 1%, 4%, and 10% Ce-3 (+) doped ZnB2O4 phosphors was investigated in detail. The glow peaks are examined and, activation energy (E) and frequency factor (s) are determined by using various heating rate (VHR) method. In the obtained glow curves with nine different HRs between 2 and 10 degrees C/s, it was observed that the TL intensities of the first peaks of all three samples and the second peak of 10% Ce-3 (+) doped sample decrease with increasing HR. The decrease in TL intensity was investigated whether it may be due to the presence of thermal quenching or not. On the other hand, the second glow peaks of 1, 4% Ce-3 (+) doped ZnB2O4 phosphors show an anomalous TL behavior, which the probability of the radiative processes increases due to recombination of free electrons, so the TL intensity increases with the HR. The graphs of full width at the half maximum (FWHM) versus HR were also plotted to evaluate the influence of HR on TL intensity. In this paper, we suggest that the non-localized Schon - Klasens model may give an explanation for the second peaks of 1, 4% Ce-3 (+) doped ZnB2O4 phosphors showing an unexpected increase with the increasing HR. In addition, the calculated E values of all doped phosphors were found similar in the range of 0.47-0.53 eV for peak 1 and 0.61-0.66 eV for peak 2. However, s values of Ce-3 (+) doped ZnB2O4 phosphors were found slightly different according to the dopant amount and the equation used. Furthermore, different amount of Ce-3 (+) doped samples indicate the similar properties for the repeated cycles of 5 Gy in the same irradiation conditions