M. Ali Akcayol

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Catalytic converters are the most effective means of reducing pollutant emissions from internal combustion engines under normal operating conditions. But the future emission requirements cannot be met by three way catalysts (TWC) as they cannot effectively remove hydrocarbon (HC) and carbon monoxide (CO) emissions from the outlet of internal combustion(More)
Node deployment is a fundamental issue to be solved in Wireless Sensor Networks (WSNs). A proper node deployment scheme can reduce the complexity of problems in WSNs such as routing, data fusion, communication, etc. Furthermore, it can extend the lifetime of WSNs by minimizing energy consumption due to sensing and communication. This paper presents the(More)
In this study, a priority based protocol with queue management has been developed for wireless networks. The protocol is creating new queue management for reducing dropped TCP packets with priority. A load balancing method for gateways was also developed. The protocol has been tested using an ns-2 (network simulator 2) simulation tool. In the simulation,(More)
Injection pressure in diesel engines has an important effect on the engine performance and soot formation. During performing the experimental work, the measurement of the torque, power, specific fuel consumption (SFC) and soot formation values in the diesel engines is a time consuming work and it also requires specific tools, an expert. In addition to the(More)
Recommendation Systems (RSs) are used to provide users useful and effective suggestions. Effectiveness of RSs is depend on the quality of the suggestions. In this study, a new RS based on decision tree (DT) using implicit relevance feedback have been developed for movies. User behavior as implied relevance feedback is modeled by clickstreams. The DT(More)
Sentiment analysis is one of the most popular research topics in last years. There are lots of data on web which require analysis in order for them to become useful. Many researchers have focused on making sense of these data. Therefore, sentiment analysis concept is proposed. Sentiment analysis methods try to emerge any opinions, feelings, and subjectivity(More)