Now showing items 1-12 of 12

    • 3D forest fire propagation simulation 

      Köse, Kıvanç; Grammalidis, N.; Yılmaz, E.; Çetin, A. Enis (IEEE, 2008-05)
      The increase in the number of forest fires in the last few years dispatch governments to take precautions. Besides prevention, early intervention is also very important in fire fighting. If the firefighters know where the ...
    • Adaptive and efficient nonlinear channel equalization for underwater acoustic communication 

      Kari, D.; Vanli, N. D.; Kozat, S. S. (Elsevier B.V., 2017)
      We investigate underwater acoustic (UWA) channel equalization and introduce hierarchical and adaptive nonlinear (piecewise linear) channel equalization algorithms that are highly efficient and provide significantly improved ...
    • Data imputation through the identification of local anomalies 

      Ozkan, H.; Pelvan, O. S.; Kozat, S. S. (Institute of Electrical and Electronics Engineers Inc., 2015)
      We introduce a comprehensive and statistical framework in a model free setting for a complete treatment of localized data corruptions due to severe noise sources, e.g., an occluder in the case of a visual recording. Within ...
    • Dynamic point-region quadtrees for particle simulations 

      Oğuz, O.; Durupınar, F.; Güdükbay, Uğur (Elsevier Inc., 2013)
      We propose an algorithm for dynamically updating point-region (PR) quadtrees. Our algorithm is optimized for simultaneous update of data points comprising a quadtree. The intended application area focuses on simulating ...
    • Exact and heuristic approaches based on noninterfering transmissions for joint gateway selection, time slot allocation, routing and power control for wireless mesh networks 

      Gokbayrak, K.; Yıldırım, E. A. (Elsevier, 2017)
      Wireless mesh networks (WMNs) provide cost-effective alternatives for extending wireless communication over larger geographical areas. In this paper, given a WMN with its nodes and possible wireless links, we consider the ...
    • Fall detection using single-tree complex wavelet transform 

      Yazar, A.; Keskin, F.; Töreyin, B. U.; Çetin, A. Enis (Elsevier, 2013)
      The goal of Ambient Assisted Living (AAL) research is to improve the quality of life of the elderly and handicapped people and help them maintain an independent lifestyle with the use of sensors, signal processing and ...
    • Fire detection and 3D fire propagation estimation for the protection of cultural heritage areas 

      Dimitropoulos, K.; Köse, Kıvanç; Grammalidis, N.; Çetin, A. Enis (Copernicus GmbH, 2010)
      Beyond taking precautionary measures to avoid a forest fire, early warning and immediate response to a fire breakout are the only ways to avoid great losses and environmental and cultural heritage damages. To this end, ...
    • A performance comparison of zone-based multicast protocols for mobile ad hoc networks 

      Zhang, Y.; Rangnekar, A.; Selçuk, Ali A.; Bicak, A.; Sidhu, D. (IEEE, 2003)
      With the current trend toward ubiquitous computing come wireless devices capable of forming the nodes of mobile ad hoc networks. Such networks typically rely on routing protocols in order to communicate messages from a ...
    • PSAR: Power-source-aware routing in ZigBee networks 

      Tekkalmaz, M.; Korpeoglu I. (2012)
      ZigBee is a recent wireless networking technology built on IEEE 802.15.4 standard and designed especially for low-data rate and low-duty cycle applications such as home and building automation and sensor networks. One of ...
    • Time-varying lifting structures for single-tree complexwavelet transform 

      Keskin, Furkan; Çetin, A. Enis (IEEE, 2012)
      In this paper, we describe a single-tree complex wavelet transform method using time-varying lifting structures. In the dualtree complex wavelet transform (DT-CWT), two different filterbanks are executed in parallel to ...
    • Türkiye Orman Teşkilatı'nın tarihi ve gelişimi 

      Acer, Ahsen Rana; Özcan, Büşra Nur; Özyürek, Doruk Can; Kaman, Gökçe; Uygun, Muhammed (Bilkent University, 2020)
      Türkiye Orman Teşkilatı, kuruluşundan günümüze kadar çeşitli reformlara tanıklık etmiştir. Bu kapsamda Cumhuriyet Dönemi öncesinde atılan adımlar ve Cumhuriyet'in kuruluş aşamasının ardından çıkarılan kanunlar bu teşkilatın ...
    • Türkiye Ormancılar Derneği 

      Sefercik, Recep; Öztürk, Ünsal; Baykara, Oğuzhan; Yıldız, Tanıl; Tümer, Dilek Şevval (Bilkent University, 2020)
      Türkiye Ormancılar Derneği, Türkiye'nin en eski sivil tabanlı derneklerinden biridir, ve kökleri kurulduğu 1924 yılına kadar gitmektedir. Tarihsel olarak, dernek Türk ormancılığı üzerindeki en önemli etkenlerden biri ...