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Bayrakceken M.K.,Turkish Air force Academy | Yalcin M.K.,Technical University of Istanbul | Arisoy A.,Turkish Air force Academy | Karamancioglu A.,Osmangazi University
2011 IEEE International Conference on Mechatronics, ICM 2011 - Proceedings

In this paper, we describe a dSpace ds1103 based HIL (Hardware-In-The-Loop) test platform, a dynamic model derived using Lagrangian Mechanics and a PD attitude control algorithm for a quadrotor mini UAV with experimental results. The platform is mainly intended for developing different control algorithms, fine tuning control parameters in real-time, monitoring and recording all platform data for post-processing. Additionally, platform houses a modular custom built 6 DOF IMU which provides a real-time development environment for filters or data fusion algorithms to optimize navigation solution. The electrical and functional architecture, materials chosen for building mechanical structure, all devices including brushless motors, motor drive units, IMUs are explained in detail with experiences gained during manufacturing process. Attitude control up to 20 degrees for pitch and roll, 720 degrees (two turns) for yaw and limited positional control in only z-axis (a few centimeters) for demonstration of hover is available in test platform. A detailed dynamic model which is used by several authors in literature and a simplified version for Simulink modeling is given. In the last part, the proposed classical PD control scheme and the determination of control parameters are explained. © 2011 IEEE. Source

Alparslan G.B.,Osmangazi University | Eskin N.,Hospital of Osmangazi University | Yilmaz S.,Hospital of Osmangazi University | Akay M.,Hospital of Osmangazi University
Journal of the Australian Traditional-Medicine Society

Objective: The present study was conducted to investigate the effects of ginger on chemotherapy-induced nausea and/or vomiting. Design: The study was carried out on cancer patients receiving chemotherapeutic agents in the haematology clinic of a training hospital between March 01, 2011 and July 29, 2011. Subjects: The study group was composed of intervention (n=15) and control (n=30) patients. Approval from the ethics committee, informed consent from the patients and permission from the hospital management were obtained. Intervention: Control patients received antiemetic drugs for ethical reasons and intervention patients received ginger tablets (800 mg). Outcome Measure: Data were collected using the Identification Form for Descriptive Characteristics, which was prepared by the researchers. SPSS 15.0 was used for data assessment. Results: Statistical analysis revealed no differences in the characteristics of the intervention and control groups (p>0.05). A significant difference was found between the groups receiving ginger and antiemetics, suggesting that ginger is effective for treatment of nausea and vomiting (p<0.05). Conclusion: Results of the present study suggest that ginger is effective for reducing chemotherapy-induced nausea and/or vomiting and they should be confirmed in future studies that include more patients with a haematological cancer. Source

Mert D.G.,Cumhuriyet University | Kelleci M.,Cumhuriyet University | Mizrak A.,Erciyes University | Semiz M.,GATA | Demir M.O.,Osmangazi University
Psychiatria Danubina

Background: The aim of this study is to identify the risk factors that are associated with suicide attempts in patients with bipolar disorder type I. Subjects and methods: This cross-sectional study was conducted with inpatients and outpatients with BD type I. Patients who met the study inclusion criteria (n=91) were evaluated in terms of sociodemographic variables, history of childhood trauma, comorbidity of adult attention deficit hyperactivity disorder and posttraumatic stress disorder, and the course of the disease. The patients were divided into two groups: those with a history of suicide attempts and those without a history of suicide attempts. The parameters of the study groups were compared with t and chi-square tests as appropriate. Logistic regression was used to identify the predictors of suicide attempt. Results: Logistic regression analysis of the study parameters suggested that the number of major depressive episodes (odds ratio: 7.18; 95% confidence interval: 1.84-28) and history of emotional neglect (odds ratio: 1.83; 95% confidence interval: 1.15- 2.90) were significant predictors of suicide attempt in patients with BD. Conclusion: In BD type I patients with a history of suicide attempts, the number of depressive episodes and emotional neglect, a subtype of childhood traumas, were the most remarkable risk factors. Considering the frequency of depressive episodes during the course of the disease and assessing traumas including those in childhood may help predict future suicide attempts in patients with BD. © Medicinska naklada - Zagreb, Croatia. Source

Gokce E.,Gaziosmanpasa University | Beyhan M.,Zile State Hospital | Acu B.,Osmangazi University | Deniz Demir H.,Gaziosmanpasa University
Clinical Imaging

In this study, radiological findings of acquired dacryocystocele are presented. A total of 13 dacryocystoceles including bilateral in two of the patients, in four patients on the left and in five patients on the right, were determined. Six of the patients had dacryocystocele infection. Average density of the non-infected dacryocystoceles was 11.8±7.8 Haunsfield units (HU), while the median density value of infected ones was 35.0 HU. There was expansion on unilateral nasolacrimal duct in four patients. Acquired dacryocystoceles are rare masses in medial canthal area, and their radiological imaging findings may vary based on etiological factors and presence of infections. © 2014 Elsevier Inc. Source

Hellings P.W.,University Hospitals Leuven | Akdis C.,Swiss Institute of Allergy | Bachert C.,Ghent University | Cingi C.,Osmangazi University | And 13 more authors.
Allergy: European Journal of Allergy and Clinical Immunology

State-of-the-art documents like ARIA and EPOS provide clinicians with evidence-based treatment algorithms for allergic rhinitis (AR) and chronic rhinosinusitis (CRS), respectively. The currently available medications can alleviate symptoms associated with AR and RS. In real life, a significant percentage of patients with AR and CRS continue to experience bothersome symptoms despite adequate treatment. This group with so-called severe chronic upper airway disease (SCUAD) represents a therapeutic challenge. The concept of control of disease has only recently been introduced in the field of AR and CRS. In case of poor control of symptoms despite guideline-directed pharmacotherapy, one needs to consider the presence of SCUAD but also treatment-related, diagnosis-related and/or patient-related factors. Treatment-related issues of uncontrolled upper airway disease are linked with the correct choice of treatment and route of administration, symptom-oriented treatment and the evaluation of the need for immunotherapy in allergic patients. The diagnosis of AR and CRS should be reconsidered in case of uncontrolled disease, excluding concomitant anatomic nasal deformities, global airway dysfunction and systemic diseases. Patient-related issues responsible for the lack of control in chronic upper airway inflammation are often but not always linked with adherence to the prescribed medication and education. This review is an initiative taken by the ENT section of the EAACI in conjunction with ARIA and EPOS experts who felt the need to provide a comprehensive overview of the current state of the art of control in upper airway inflammation and stressing the unmet needs in this domain. © 2012 John Wiley & Sons A/S. Source

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