Fakülteler / Faculties
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Item Ethical Discourse of Medical Students on the Phenomenon of Death: A Qualitative Study(2014) Keles, Sukru; Gul, Senay; Yildiz, Abdullah; Karabulut, Seyhan Demir; Eren, Handan; Iskender, Mahinur Durmus; Baykara, Zehra Gocmen; Yalim, Neyyire Yasemin; https://orcid.org/0000-0001-5473-573X; 34018435; AAB-3163-2021The aim of this study is to discover medical students' ideas on the phenomenon of death; produce information on how these students interpret the value-related problems regarding death that they come across in different units of hospitals; and assess this data in ethical terms. This study included a qualitative research in which 12 focus group interviews were conducted with 92 fifth- and sixth-year medical students. Data obtained from interviews were assessed using a thematic content secondary analysis. The main themes were specified according to the medical students' statements and were reviewed under the contexts of the "dying process"; "effects of death"; "attitude and behavior of health professionals"; "seeing a dead body/looking at a dead body"; "accepting death"; and "forms of expressions of death." Medical students' encounters with death in different units of hospitals leads them to question their values and familiarize themselves with the borders of their areas of profession.Item Goodness-of-fit and Randomness Tests for the Sun's Emissions True Random Number Generator(2014) Tanyer, Suleyman Gokhun; Atalay, Kumru Didem; Inam, Sitki Cagdas; 0000-0003-0820-9186; I-5023-2013; JHU-3888-2023Random number generators ( RNGs) are one of the key tools necessary for statistical analysis and optimization methods such as Monte Carlo, particle swarm optimization ( PSO) and the genetic algorithm. Various pseudo and true RNGs are available today, and they provide sufficient randomness. Unfortunately, they generate data that do not always represent the required distribution accurately, especially when the data length is small. This could possibly threaten the 'repeatability' of an academic study. A novel true RNG ( TRNG) using the method of uniform sampling ( MUS) is recently proposed. In this work, the Sun's RF emissions MUS-TRNG is comparatively tested with well known pseudo and true RNGs. It is observed that both randomness and very high goodness-of-fit qualities are possible.Item True Random Number Generation of Very High Goodness-of-fit and Randomness Qualities(2014) Tanyer, Suleyman Gokhun; I-5023-2013The statistical nature of numerous problems in mathematics, physics and engineering have led to the development of methods for generating random data for a given distribution. Ancient methods include; dice, coin flipping and shuffling of cards. Today, various pseudo, quasi and true random generators ( RNGs) are being proposed for their improved properties. In this work, test metrics for goodness-of-fit and randomness are reviewed. The method of uniform sampling ( MUS) is modified for improving the randomness without harming the goodness-of-fit qualities. The test results illustrate that very high goodness-of-fit can be obtained even when the number of observed samples is as small as 10.Item Efficient Recognition of Human Emotional States from Audio Signals(2014) Erdem, Ernur Sonat; Sert, Mustafa; https://orcid.org/0000-0002-7056-4245; AAB-8673-2019Automatic recognition of human emotional states is an important task for efficient human-machine communication. Most of existing works focus on the recognition of emotional states using audio signals alone, visual signals alone, or both. Here we propose empirical methods for feature extraction and classifier optimization that consider the temporal aspects of audio signals and introduce our framework to efficiently recognize human emotional states from audio signals. The framework is based on the prediction of input audio clips that are described using representative low-level features. In the experiments, seven (7) discrete emotional states (anger, fear, boredom, disgust, happiness, sadness, and neutral) from EmoDB dataset, are recognized and tested based on nineteen (19) audio features (15 standalone, 4 joint) by using the Support Vector Machine (SVM) classifier. Extensive experiments have been conducted to demonstrate the effect of feature extraction and classifier optimization methods to the recognition accuracy of the emotional states. Our experiments show that, feature extraction and classifier optimization procedures lead to significant improvement of over 11% in emotion recognition. As a result, the overall recognition accuracy achieved for seven emotions in the EmoDB dataset is 83.33% compared to the baseline accuracy of 72.22%.Item Assessment of Takayasu's Arteritis Patients with Indian Takayasu Clinical Activity Score (ITAS2010) Improves with the Incorporation of Imaging(2014) Oner, Fatma Alibaz; Aydin, Sibel Zehra; Akar, Servet; Aksu, Kenan; Kamali, Sevil; Yucel, Eftal; Karadag, Omer; Ozer, Huseyin; Kiraz, Sedat; Onen, Fatos; Inanc, Murat; Keser, Gokhan; Akkoc, Nurullah; Direskeneli, Haner; F-8858-2011Item In Vitro Evaluation of E. coli And S. epidermidis Adhesion on Dressing Materials Used in Hypospadias Repair(2014) Soyer, Tutku; Bostanoglu, Ebru; Aslan, Mustafa Kemal; Boybeyi, Ozlem; Demirbilek, Muge; Gocmen, J. Sedef; JWP-3001-2024Background An in vitro study was performed to evaluate the adherence of Escherichia coli and Staphylococcus epidermidis to different dressing materials. Methods Hydrophyl gauze swab (GS), sterile flax swab (FS), and their nitrofurazone (Furacin (R)) absorbed forms (GSF and FSF), sterile paraffin-covered gauze with chlorhexidine acetate (0.5 %) (Bactigrass (R), BG), and semipermeable transparent film gauze (Tegaderm (R), TG) were used in the study. A 1 cm(2) of each material was placed in culture plates, and E. coli ATCC 25922 and S. epidermidis ATCC 12228 were suspended in each plate. After 24, 48 h, and 1 week of incubation period, colony counts were calculated in colony-forming units (CFU) per square centimeter unit. Bacterial adhesion was compared between groups, and each dressing material was also compared for different incubation periods (24, 48 h, and 1 week). Results The colony counts were significantly decreased in GSF and FSF groups (Kruskal-Wallis test, p < 0.05). There was no difference for E. coli adhesion in GS, FS, BG, and TG groups (p > 0.05). The significant difference detected for S. epidermidis adhesion in the first 24 to 48 h could not be detected at the end of a 1-week period. There was no statistical difference in groups when compared for 24-, 48-h, and 1-week periods of incubations (Wilcoxon signed-rank test, p > 0.05). In BG group, E. coli adhesion was increased, and S. epidermidis adhesion was decreased without a significant difference at the end of a 1-week period (p > 0.05). Conclusions Nitrofurazone absorbed sterile gauze materials have less bacterial adhesion. In vitro adhesion of E. coli and S. epidermidis did not differ between the 24-h and 1-week period. E. coli adhesion to BG can be increased if the duration of dressing prolonged up to a 1-week period. Level of Evidence: Not ratable.Item Development of Computer Based Ballistocardiography System(2014) Ozturk, Nurhan; Yildiz, Metin; https://orcid.org/0000-0002-2554-6953; JJF-5070-2023Ballistocardiography is a measurement method which monitors physiologic parameters such as heart rate and respiration through measuring the vibrations caused by heart beat. In this study, a computer based system which enables monitoring the changes in the heart rate and respiration without any electrical connection with the patient is introduced. It is examined whether this system can be used in monitoring the heart beat velocity and respiration through making comparisons with a commercial data acquisition system. During the study, it is observed that heart beat velocity is determined with a maximum 5% error and respiration frequency with a maximum 5.8%. Furthermore, respiratory standstill can be detected with this system. According to these results, it could be concluded that the system can be used as pre-diagnosis with the aim of monitoring respiration disorders during sleep.Item Intravesical BCG Immunotherapy: Sepsis and Multiorgan Failure Developed After Traumatic Catheterization(2014) Cicek, Tufan; Togan, Turhan; Erinanc, Hilal; Ugur, Murat; Gonulalan, Umut; Cifci, Egemen; 0000-0003-1401-6356; AAL-1268-2021Intravesical Bacillus Calmette-Guerin (BCG) instillation is a prophylactic therapy using for treating bladder cancer to prevent tumour progression and recurrence. Both local and systemic complications can arise after the installation. Although local complications are common, this therapy is generally well tolerated. Systemic complications are rarely than local complications but can be fatal. We report a case who died from severe complications such as sepsis, pneumonia, renal failure and granulomatous hepatitis after receiving the first maintanence installation of intravesical BCG immunotherapy for bladder transitional cell carcinoma.Item Analysis of Heart Diseases from ECG Signal(2014) Kantar, Tugce; Koseoglu, Ovul; Erdamar, Aykut; https://orcid.org/0000-0001-8588-480X; AAA-6844-2019At the present time, the main method used in the diagnosis of heart disease is the electrocardiography (ECG). The purpose of this study is design a decision support algorithm which automatically detect the normal sinus rhythm or other pathologies. The improved algorithm will provide support to the doctor can be also used for educational purposes. Within the scope of this study, with the design of the rule based algorithm which automatically detect a normal sinus rhythm and non normal sinus rhythm, in total it can detect eight pathologies. In maincode there are thirteen functions that are used for diagnose eight different ECG pathology automatically. Higher success is being anticipated in future for the prediction power of the developed method with continuing research on the matter.Item A Feasibility Study of Communication with Cold Stimulations(2014) Budak, Erdem Inanc; Yildiz, Metin; https://orcid.org/0000-0002-2554-6953; JJF-5070-2023Some part of available sytems which requires surgery (kohlear implant) for communication of completely deaf people, other parts just heal for one side hearing impaired people (soundbite technologies). Thus, there are lot of research of tactiles that are methods for communication through skin. However, existing communication systems's speed are too low, also devices couldn't move because, they working with electricity and have big massive. In this paper we have developed alternative communication method that the system uses cold stimulus for transfer characters through skin and also first tests have been done. We used peltiers for exist to cold stimuli and developed a computer based control system to transfer to peltiers via coding. We saw that subjects perceived two stimulus per second at one point of their forearms. But when we used more than one stimulus for coding characters, perception percent get low. Overall of results, we prove that communication with thermal way is alternative method that gives promise.