A Long-range Context-aware Platform Design For Rural Monitoring With IoT In Precision Agriculture

The Internet of Things (IoT) applications has been developing greatly in recent years to solve communication problems, especially in rural areas. Within the IoT, the context-awareness paradigm, especially in precision agricultural practices, has come to a state of the planning of production time. As smart cities approach, the smart environment approach also increases its place in IoT applications and has dominated research in recent years in literature. In this study, soil and environmental information were collected in 17 km diameter in rural area with developed Long Range (LoRa) based context-aware platform. With the developed sensor and actuator control unit, soil moisture at 5 cm and 30 cm depth and soil surface temperature information were collected and the communication performance was investigated. During the study, the performance measurements of the developed Serial Peripheral Interface (SPI) enabled Long Range Wide Area Network (LoRaWAN) gateway were also performed

Container-Based Virtualization for Bluetooth Low Energy Sensor Devices in Internet of Things Applications

Internet of Things (IoT) has become a continuously growing concept with the developments of ubiquitous computing, wireless sensor networks (WSN). With the industry 4.0 revolution, all production activities such as logistics, finance, agriculture, energy and almost all the service and infrastructure applications used by people in the cities we live in will undergo a major change within the IoT paradigm. In this study, a prototype model has been developed and its performance is investigated. Our prototype model can reach the advertisement data of Bluetooth Low Energy sensor devices by using container-based virtualization technology and directly working at layer 2 (L2) of Transmission Control Protocol/Internet Protocol (TCP/IP). Virtualization mechanism for the sensor devices could help to exchange context-aware information with Internet Protocol Version 6 (IPv6) structure. Also with virtualization may emerge interoperable sensor node platforms of heterogeneous environments from different vendors

OpenFlow protocol and use of pox controller on network swtiches

Yüksek Lisans TeziBu tez çalışmasında, İstanbul Teknik Üniversitesi Bilgi İşlem Daire Başkanlığı'nda bulunan OpenFlow etkin HP ağ anahtarları kullanılarak, OpenFlow protokolü üzerinde, D-ITG açık kaynak kodlu programıyla birlikte bir araştırma çalışması yapılmıştır. Bu çalışmayla, OpenFlow protokolünün bir controller vasıtasıyla ve controller olmadan performansları ölçülmüş, bahsi geçen POX denetleyicisi (controller) ile ilerde, OpenFlow protokolüne bir katkı yapılıp yapılamayacağı tartışılmak istenmiştir. Çalışma esnasında 64, 128, 265, 512, 1024, 2048 byte'lık veri paketleri ile 8'er saatlik ağ trafiği oluşturulmuş ve bu çalışma sonucunda elde edilen veriler GNU PLOT programıyla görsel hale getirilerek, OpenFlow protokolü ile ilgili bir sonuç çıkarılmaya çalışılmıştır.Anahtar Kelimeler:OpenFlow, Yazılım Tabanlı Ağ, OpenFlow denetleyicisi.AbstractIn this thesis, a research has been done on OpenFlow protocol with the open-source D-ITG software by using the Open Flow enabled HP network switch available in Istanbul Technical University, Directorate of Information Technologies. In this study, the performance of OpenFlow protocol with a controller and without a controller has been measured and it has been intended to be discussed whether a contribution could be made to the OpenFlow protocol with the previously mentioned POX controller. In the research, an eight-hour network traffic has been generated with 64, 128, 256, 512, 1024, 2048 bytes data packets and a conclusion concerning the OpenFlow protocol has been tried to be acquired through visualizing the obtained data by using GNU PLOT software.Keywords: OpenFlow, Software Defined Network, OpenFlow Controller

Three diarrheal cases caused by Cyclospora cayetanensis in Kayseri Kayseri'de Cyclospora cayetanensis Kaynakli Uç Ishal Olgusu.

Cyclospora cayetanensis is a coccidian parasite that may be the agent of persistent and prolonged diarrhea. In this study, the etiologic agent of diarrhea in 18, 26 and 34 year-old immunocompetent female patients complaining of diarrhea was investigated. Cyclospora cayetanensis oocysts were observed in stool specimens taken from the patients and stained by the Kinyoun's acid-fast stain method. In this study, an attempt has been made to shown the importance of Cyclospora cayetanensis, which is a cause of prolonged diarrhea mainly in immunosuppressed patients and is generally presented in case reports in our country

Haydar USUL Kayhan KUZEYL‹ Ertu¤rul ÇAKIR Dumbbell Shaped Giant Cell Tumor of the Temporal Bone: Case Report and Literature Review Temporal Kemi¤in Kumsaati Görünümlü Dev Hücreli Tümörü: Olgu Sunumu ve Literatürün Gözden Geçirilmesi

ABSTRACT We present a 29-year-old woman with a giant cell tumor of the temporal bone. The differential diagnosis is discussed with reference to the literature regarding giant cell lesions, especially of the cranium. KEY WORDS: Giant cell tumor, magnetic resonance imaging, temporal bone ÖZ 29 yaşındaki bir kadın hastada temporal kemiğin dev hücreli tümörü sunulmuştur. Hastalığın ayırıcı tanısı literatür ışığında özellikle kraniumu ilgilendiren dev hücreli lezyonlar açısından tartışılmıştır