Improving the QoE of DASH over SDN: A MCDM Method with an Intelligent Approach

###EgeUn###As being one of the most popular applications in the last decade, dynamic adaptive video streaming applications are used by Internet users every day. In such applications, the underlying architecture allows users to change quality adaptively as their request. The purpose of quality or rate adaptation algorithm is to achieve highest QoE possible. In this paper, we propose a rate adaptation algorithm which allows to increase the quality of already buffered video by using Multi-Criteria Decision Making (MCDM) method. Increasing the quality of the buffered video can be beneficial in areas from resiliency to entertainment. We propose to utilize SDN for deciding weights of MCDM method. For this purpose, SDN controller runs a machine learning algorithm by using its knowledge about current network conditions as an input of the learning algorithm. Simulation results show that users achieve higher QoE by using our approach when compared to conventional rate adaptation algorithm.COST Action - COST (European Cooperation in Science and Technology) [CA15127]This article is based upon work from COST Action CA15127 ("Resilient communication services protecting end user applications from disaster-based failures. RECODIS") supported by COST (European Cooperation in Science and Technology). The authors thank to Seckin Eser from DEU for his valuable contributions on developing MCDM method

Relationship between development of accessory maxillary sinus and chronic sinusitis

Background: We aimed to investigate whether there is a relationship between development of accessory maxillary osmium (AMO) and chronic sinusitis. Material and Methods: A total of 100 patients who had endoscopic sinus surgery for chronic rhinosinusitis (CRS) constituted the study group while 100 patients who had septoplasty were taken as the control group. The patients were examined for the presence of AMO using rigid endoscope. Results: The prevalence of AMO was 14% in the rhinosinusitis group and 9% in the control group. The difference between the groups was statistically significant (P < 0.05). Conclusion: Our study revealed that AMO prevalence is significantly higher in patients with CRS when compared with the controls. CRS may enhance perforation of fontanelle and formation of AMO

Schwannoma originating from the infraorbital nerve: A case report

A 16-year-old female admitted to otolaryngology outpatient clinic with the complaints of pain and replacement of her left eyeball upwards. Radiological imaging demonstrated a solid mass inferior to the left globe. The anterior wall of the maxilla was thinned and the mass pushed the orbital floor inferiorly. Following subciliary incision, the bone over the mass was removed from the orbital rim and the mass was exposed. The mass originated from the infraorbital nerve. The mass was excised and the orbital rim, malar region and the orbital floor were reconstructed by a titanium mesh. The histopathological report was "schwannoma". Seven cases of schwannomas arising from the infraorbital nerve reported in English. literature. In this paper we report a case of infraorbital schwannoma and review the literature. (C) 2005 Elsevier Ireland Ltd. All rights reserved

An atypical esthesioneuroblastoma of the inferior nasal cavity and maxillary sinus: Report of a case

Esthesioneuroblastoma is a rare malignant tumor of the nasal cavity that originates from the olfactory epithelium. In this paper a very rare clinical presentation of this tumor is described. The tumor originated from the maxillary sinus and alveolar process, and was independent of the olfactory region. The patient was a 14-year-old girl presenting with facial swelling and nasal obstruction. Paranasal computed tomography showed a mass filling the right nasal cavity, infiltrating the alveolar process, eroding the anterior wall of the maxilla and invading the subcutaneous tissues of the cheek. Fine-needle aspiration and incisional biopsies identified an esthesioneuroblastoma. After neoadjuvant chemotherapy, we performed a right subtotal and left inferior maxillectomy and reconstructed the maxillary defect with a permanent obturator. At 2 years' follow-up the patient is free of recurrence