Now showing items 1-8 of 8

  • Extending the lifetime of WSNs with Maximum Energy Selection Algorithm (MESA) 

    The limited battery supply of a sensor node is one of the most important factors that limit the lifetime of the WSNs. As a consequence increasing the lifetime of WSNs through energy efficient mechanisms has become a challenging research area. Previous studies have shown that instead of implementing direct transmission or multi-hop routing clustering can significantly improve the total energy dissipation and lifetime of a WSN. The traditional LEACH and LEACH based algorithms have evolved from this ...

  • Extending the Lifetime of WSNs with Maximum Energy Selection Algorithm (MESA) 

    Authors:Cengiz, Korhan; Daǧ, Tamer
    Publisher and Date:(IEEE, 2016)
    The limited battery supply of a sensor node is one of the most important factors that limit the lifetime of the WSNs. As a consequence increasing the lifetime of WSNs through energy efficient mechanisms has become a challenging research area. Previous studies have shown that instead of implementing direct transmission or multi-hop routing clustering can significantly improve the total energy dissipation and lifetime of a WSN. The traditional LEACH and LEACH based algorithms have evolved from this ...

  • Improving the accuracy of indoor positioning system 

    Authors:Hameez, Mohammed Muwafaq Noori
    Publisher and Date:(Kadir Has University, 2019)
    Indoor positioning applications needs high accuracy and precision to overcome the existing obstacles and relatively small areas. There are several methods which could be used to locate an object or people in an indoor location. Specifically, Ultra-wide band (UWB) sensor technology is a promising technology in indoor environments because of its high accuracy, resistance of interference and better penetrating. This thesis is focused on improving the accuracy of UWB sensor based indoor positioning ...

  • Low Energy Fixed Clustering Algorithm (LEFCA) for Wireless Sensor Networks 

    Authors:Cengiz, Korhan; Daǧ, Tamer
    Publisher and Date:(IEEE, 2015)
    Wireless sensor networks (WSNs) have become an important part of our lives as they can be used in vast application areas from disaster relief to health care. As a consequence the life span and the energy consumption of a WSN has become a challenging research area. According to the existing studies instead of using direct transmission or multi-hop routing clustering can significantly reduce the energy consumption of sensor nodes and can prolong the lifetime of a WSN. In this paper we propose a low ...

  • Message-passing based algorithm for the global alignment of clustered pairwise PPI networks 

    Authors:Yenigün, Doğan Yiğit
    Publisher and Date:(Kadir Has University, 2013)
    Constrained global network alignments on pairwise protein-protein interaction (PPI) networks involve matchings between two organisms where proteins are grouped together in a great number of clusters, produced by algorithms that seek functionally ortholog ones and these organisms are represented as graphs. Unlike balanced global network alignments, this has not gained much popularity in bioinformatics. Only a few methods have been proposed thus far; by assuming specific structures of networks ...

  • Multi-Hop Low Energy Fixed Clustering Algorithm (M-LEFCA) for WSNs 

    Authors:Cengiz, Korhan; Daǧ, Tamer
    Publisher and Date:(IEEE, 2016)
    The limited battery supply of sensor nodes is one of the most important factors which restrict the lifetime of the wireless sensor networks (WSNs). As a consequence the wide deployment of WSNs in the recent years led to the necessity of extending the lifetime through energy efficient mechanisms. Previous studies have shown that instead of implementing direct transmission in a WSN field to collect data clustering can significantly improve the energy-efficiency and thus the lifetime. The traditional ...

  • Recommendation of data visualization tools for non-technical people 

    Authors:Omran, Ahmet
    Publisher and Date:(Kadir Has University, 2019)
    Big data analysis and data science are promising trends. Visualization is critical part. It outlines and presents data as information from different perspectives. Consequently, leaders, decision makers, and end users will grasp concepts and identify patterns with new dimensions. However, while time is still a complex dimension, the number of Information Visualization (InfoVis) software tools are increasing rapidly. This research test out how non-technical people select their InfoVis tools. Generally, ...

  • Service granularity in service oriented architecture 

    Authors:Taşkın, Cihan.
    Publisher and Date:(Kadir Has University, 2012)
    Today technology brings with it innovations. One of those innovations is Service Oriented Architecture (SOA). The importance of finding optimum in service granularity increases day by day as SOA becomes more popular. Although there are many quests about this issue finding optimum in service granularity still cannot be made certain. Therefore we tried to create a new framework that uses inputs outputs (i/O) enterprise service bus (ESB) and execution cost metrics to find an optimum in service ...