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Öğe Parsonage Turner syndrome: Case report(2003) Esenyel, M.; Tetik, S.; Şahin, Z.; Özaras, N.Parsonage-Turner syndrome is characterized by an ache begining in and around the shoulder, at the neck or at the base of the skull which gets increasingly more severe. Pain is followed by muscular weakness, sensory and reflex impairement. EMG is the most valuable method for the diagnosis. Therapy is usually symptomatic and recovery occurs within a few weeks to 2 years. Parsonage-Turner syndrome should be considered in the differential diagnosis of patients with a new-onset shoulder pain. Early recogninition of this condition may prevent unnecessary surgical intervention and enables us to predict functional recovery.Öğe Cardiac metastasis of thyroid cancer(2009) Bilgi, O.; Haholu, A.; Kardeşo?lu, E.; Türken, O.; Kandemir, E.G.; Karagöz, B.Anaplastic thyroid carcinomas are very aggressive cancers and metastasize frequently to the lungs and pleura. The cardiac metastases of thyroid cancers are rare. The diagnosis before the death is rare. We present a case of anaplastic thyroid carcinoma with metastatic involvement of the heart. It was presented with atrial fibrillation. The echocardiography demonstrated a solid mass in interventricular septum. One week later the patient died of heart failure. We call attention of clinicians that during the follow up of thyroid cancer such arrythmias may be the harbinger of a cardiac metastasis.Öğe The availability of microfiber textile material in the textile architecture - The effect of uv absorber on material tensile strength(2010) Gezer, H.; Merdan, N.Recently, new alternative materials are participated by the production of composites which includes polymer fibers. The fibers in the form of "Technical Textiles" show variety and provide spreading the modern structure systems in "Textile Architecture". The fibers used in textile architectures are mainly polyester, polypropylene and polyamide fibers. Especially the fibers in the form of microfibers come forward because of the endurance against the climatic conditions. Microfiber textile surfaces has the air and water vapour permeability which is demanded for exterior coating, can also be used as exterior surface material when durability conditions were provided. In this research, the tensile strength of polyester microfiber material, used in textile industry, was researched under external conditions. Among these external conditions, especially UV radiation was an effective factor on the material surface. Due to this factor, different concentrations of UV absorbers were applied on microfiber. Undyed microfiber textile material was treated with 0%, 1%, 2%, 3% and 4% UV absorber concentrations. UV radiation of daylight was limited in 300-400 nm and material was exposed to accelerated aging experiment for 320 hours, which was equivalent to blue wool 7-l8 degree reference. The experimental results showed that UV absorber has a positive effect on aged material; however, concentration percentage differences do not provide any annex to endurance of material.Öğe A giant villous adenoma: case mimicking rectosigmoid malignancy; radiological survey to diagnosis.(2010) Çubuk, R.; Tasali, N.; Arslan, G.; Midi, A.; Manukyan, Manuk Norayık; Guney, S.Villous adenomas are benign lesions, which are difficult to interpret because of their malignancy potential. They have similar radiological findings to malignant lesions. Usually, villous adenomas are asymptomatic although they may cause rectal bleeding like malignant tumours. We present a case of giant villous adenoma to evaluate the contribution of its radiological features including double contrast barium enema, computed tomography and magnetic resonance imaging examinations for the differential diagnosis.Öğe Is bone mineral density measurements correlated with facet joint orientation? A dual energy X-ray absorptiometry study.(2009) Çubuk, R.; Tasali, N.; Kozakcioglu, M.; Guney, S.We aimed to study correlation between bone mineral density (BMD) and facet joint orientation in normal, osteopenic and osteoporotic patients. The correlation between more sagittally oriented facet joint and facet joint osteoarthritis and spondylolisthesis was described previously. However, the correlation between facet joint orientation and its possible correlation with BMD measurements has not been evaluated. Our study is a primary effort to describe the correlation of BMD with facet joint orientation, which is important in terms of spinal biomechanics. Thirty-seven patients who had undergone both lumbar spinal Magnetic Resonance Imaging and Dual-energy X-ray absorptiometry were included in the study. Facet joint osteoarthritis and orientation were evaluated in five levels between L1-S1. For facet joint orientation, axial images were used. For grading of facet joint osteoarthritis the classification of Weishaupt and co-workers were used. Lumbar BMD was correlated with BMD of the hip. Facet orientation was similar among the 3 groups namely patients with normal BMD values, osteopenia and osteoporosis. Facet orientation was not correlated with lumbar BMD measurements. Facet joint orientation is not correlated with BMD measurements in our patient group without spondylolisthesis. Since spondylolisthesis has been demonstrated to alter BMD measurements, we suggest that spinal degenerative disease secondary to spondylolisthesis is the main entity leading to measurement errors.Öğe An improved clustering algorithm for text mining: Multi-cluster spherical K-means(Zarka Private Univ, 2016) Tunali, V.; Bilgin, T.; Camurcu, A.Thanks to advances in information and communication technologies, there is a prominent increase in the amount of information produced specifically in the form of text documents. In order to, effectively deal with this “information explosion” problem and utilize the huge amount of text databases, efficient and scalable tools and techniques are indispensable. In this study, text clustering which is one of the most important techniques of text mining that aims at extracting useful information by processing data in textual form is addressed. An improved variant of spherical K-Means (SKM) algorithm named multi-cluster SKM is developed for clustering high dimensional document collections with high performance and efficiency. Experiments were performed on several document data sets and it is shown that the new algorithm provides significant increase in clustering quality without causing considerable difference in CPU time usage when compared to SKM algorithm. © 2016, Zarka Private Univ. All rights reserved.Öğe Citizen (in)security?: Social media, citizen journalism and crisis response(The Pennsylvania State University, 2014) Watson, H.; Baruh, L.; Finn, R.L.; Scifo, S.The use of social media in a crisis has been applauded, and is witnessing an increase in uptake among those involved in crisis management activities, including citizens. Whilst some challenges have been discussed elsewhere, somewhat lacking is a discussion on the impact of sharing information on the security of those that may have been recorded. Accordingly, this working paper aims to provide preliminary results of an initial mapping task that seeks to examine the impact of the use of social media in a crisis on the social and ethical wellbeing of the security of the citizen. Authors argue that the heightened involvement of citizen journalism results in the filtering of information after its online publication which raises concerns relating to the dissemination of false information and a threat to an individual's privacy. Such issues should be adequately addressed in the encouragement and use of citizen contributions in crisis response.Öğe Management trainee program of Turkish airlines: Global Distance Education(Sakarya University, 2014) Karasar, S.; Öztürk, O.F.It has always been a contested task to try to present a scientific base for the concept of 'management.' The concept of management, which has always been of great importance to the institutions and organizations, has gone through periodical changes both in terms of its structure and scope, and improved in a parallel fashion as the time goes by. Political, economic, social and cultural transitions at global scale in the second half of the 20th century uncovered the necessity for certain organizations to revisit their concepts of management. As a result of the economic equilibrium, which was driven by globalization, technological developments and political trends, neoliberal tendencies started to be favored all over the world. Consequently, free market system has been adopted and the increasing level of competition, which is supported by the system, gave way to the idea that the only way for the organizations to dominate the market that they play in is to present a more institutionalized, holistic and innovative approach. The organizations, which have been following a more traditionalistic approach to management in the previous periods, started to make modifications in their methods. The workers, who have been considered to be mere manpower in the past, started to be seen as 'value' and that came out to be important for the sustainability of the organization. This viewpoint gave way to the strategic management practices. Management trainee programs of the institutionalized units are a result of this understanding. Today, several organizations train their managers on their own or through different means. This study aims at examining the management trainee programs in the latest technological level that they arrived at, by focusing on how practical and productive these measures are in the special example of the Turkish Airlines. © The Turkish Online Journal of Educational Technology.Öğe Effect of temperature on tensile strength properties of geosynthetic polymeric base materials(Asian Center for Soil Improvement and Geosynthetics, 2012) Karademir, T.Geosynthetics made from polymeric materials are subjected to either tensile or compressive load throughout their service life in many geotechnical field applications such as reinforced slopes, retaining walls, embankments and waste containments (landfills). Temperature has important effects on tensile strength properties (i.e. ultimate tensile strength, stiffness and toughness) of polymeric geosynthetics, and hence, must properly be evaluated. It is known that polymeric materials consist of viscoelastic properties, and therefore, the degree of loss in strength of polymeric material utilized in a design is a function of temperature variation. The extent of the tensile strain depends on the magnitude of the loading as well as the type of polymer and manufacturing process from which a geosynthetic material is produced. The use of geosynthetics, if not wisely designed and deployed properly in the field (i.e. landfill side slopes), may cause stability problems and jeopardize the integrity of the infrastructure. To this end, tensile strength properties of the two polymeric materials (polyethylene, polycarbonate) from which tension elements of the most composite geosytnthetic multi-layered systems are produced were measured at different temperatures ranging from 20 °C to 70 °C. The tensile tests at various temperatures were performed by using a computer automated universal testing machine insulated for the target test temperatures. The results of the experimental program will be presented along with a further discussion on the type of failure mode (i.e. tension behavior: ductile, brittle) that the polymeric specimens were followed under the application of tensile load. Additionally, a further comparison on ultimate tensile strength properties and tensile extensional (i.e. tensile strain) behavior of the two polymers prior to failure at different temperatures will be provided and the resulting impact of temperature on these tensile strength properties will be discussed. Further, the change in tension failure envelopes of both the polyethylene and the polycarbonate specimens with a change in temperature will be shown.Öğe Global integration of middle-income developing countries in the era of financialisation: The case of Turkey(Brill Academic Publishers, 2012) Ergünes, N.[No abstract available]Öğe Re-reading dynamics of the city of istanbul through critical mapping(Gazi Universitesi, 2016) Mutman, D.The aim of this paper is to re-read and define differentiating layers of the city of Istanbul through critical mappings as an interrogative socio-spatial research. Through this form of a new city read, information on daily urban and social practices, global impacts and urban and economic effects of consumption over space would be exposed among five different thematic constellations rooted from Guy Debord's The Society of the Spectacle. The author aims to clarify socio-spatial constellations over space, time and current trends by deconstructing the current city formation of Istanbul. © 2016, Gazi University Eti Mahallesi. All rights reserved.Öğe The transformation of internal security and of the state in Turkey during the AKP rule: A class-based analysis(Mattersburger Kreis fur Entwicklungspolitik, 2016) Bedirhano?lu, P.; Dölek, C.; Hülagü, F.The restructuring of security relations is a neglected question in critical studies on neoliberal state transformation in Turkey. This became apparent in the 2010s, when insecurity and violence have turned into everyday practices, with paramilitarised police violence used against all sorts of social opposition. These 'security'practices, which are indeed the outcome of an internationally arranged 'reformprocess'in operation since the 1990s, contradict the fundamental duty of the modern state to ensure the physical security of its citizens. This paper problematises the class-based implications of this debatable security 'reform process'under the AKP rule. It identifies the conservative and pro-capital strategies the AKP has adopted to transform the institutional structure and ideological practices of the police in Turkey.Öğe Finding the optimal path of airline flight plans using simulation(IEOM Society, 2018) Orbak, I.; Orbak, A.Nowadays, airline transportation takes the first place. It seems that competition has recently increased with the establishment of many new airline companies and the enrichment of existing airline fleets. That includes the number of pilots, the number of flight crew, the number of ground personnel, and so on, and consequently increases the costs. Redesigning and scheduling of aircraft fleet networks by firms is considered as a solution to reduce costs. Simulation studies are carried out by using advanced computer aided programs. As a result, flight scheduling problem which is also called flight punctuation problem, constitutes the most important basic problem to be solved. Route planning optimizes the most cost-effective route. In this study, fleet scheduling and crew scheduling concepts of the transit flight route of the airline company were examined with the help of simulation and the studies were focused on. © IEOM Society International.Öğe The reflection of othering and hate speech in social media videos/news and comments related to Syrian Asylum (Facebook 2018)(Peter Lang AG, 2019) Ekşi, Z.[No abstract available]Öğe Social knowledge: Inclusions and exclusions for the sake of the future democracy(Peter Lang AG, 2018) Önkal, G.; Tunçel, A.[No abstract available]Öğe The ontology of politics in hannah arendt and lying(Peter Lang AG, 2019) Tunçel, A.[No abstract available]Öğe Fruits and vegetables market hall location selection by using interval-valued trapezoidal fuzzy grey relational analysis: An application for Istanbul(University of Cincinnati, 2019) Bilisik, O.N.; Tuzkaya, U.R.; Baracli, H.; Tanyas, M.In urban areas, effectively delivering the necessary products for people to survive to the desired points has vital importance. Selecting the locations of urban distribution centers correctly, which have an essential role in distribution networks, will satisfy determining the number of vehicles, minimizing the traffic congestion by determining the routes of vehicles correctly and thus decreasing the environmental effects like noise and emission. In this study, location selection problem for fresh fruits and vegetables market hall (F&VMH) which is an important urban distribution center type that fulfills the food requirements of city residents is examined. The interval-valued trapezoidal fuzzy grey relational analysis (GRA) method is used to solve this problem because, it is suitable to deal with poor, incomplete, and uncertain information. When the results are analyzed, it is seen that F&VMHs have to be located in the district which is closer to producers and which has the lower construction and land costs. © INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING.Öğe Introduction: The alliance of understanding(Peter Lang AG, 2018) Yaldir, H.; Önkal, G.[No abstract available]Öğe Öğe New Generation and Environment Friendly Bio Based Thermal Insulation Materials(Discovery Scientific Society, 2019) Binici, H.; Aksogan, O.; Resatoglu, R.In this study, the properties of insulation materials have been searched using eggshell and nutshell with perlite and sawdust. Eggshell, nutshell which have been ground in different sizes. Sawdust with perlite and epoxy as binding have been used at the production of composite. Unit weights, ultrasonic sound velocity, thermal insulation coefficient and radiation absorption levels of produced samples in standard sizes have been investigated. Particle size of eggshell increases, radiation retention rate increases depending on the diameter. Similarly, much more sound has been kept. The voids of insulation materials are important. Location of the nutshell in matrix has been caused a decrease in the thermal conductivity. In this study has been showed that insulating materials would be produced from eggshells and nutshells. The thermal conductivity coeffecition of the new generation and environment friendly bio based thermal insulation materials is similar to the values obtain for expanded polystyrene, extruded polystyrene and mineral wool. In this way, wastes as eggshell and nutshell can be decreased and also they can be gained to the economy. Limited experiments have been done in this study. So, more detailed studies is necessary. Environmental, sustainable and economic advantages may result from this practice. © 2019 Discovery Publication. All Rights Reserved.
