Yazar "Kizil, U." seçeneğine göre listele

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    A Design Software for Plastic-Covered, Pipe-Framed Greenhouses
    (Univ Namik Kemal, 2010) Kizil, U.; Genc, L.; Sacan, M.
    Greenhouses in Turkey are generally light frame structures that are mainly subject to wind and snow loads. Currently, there is no standard design procedure for pipe-framed greenhouse structures. The greenhouse contractors are usually pipe producers or plumbers who don't apply engineering calculations. They basically build the greenhouses based on their experiences. However, pipe-framed greenhouse building design procedures do include the calculation of forces such as dead, wind, and snow, moments, reaction forces, etc. There has been a need for a user-friendly design tool that can minimize the failure of pipe-framed greenhouse structures. A software program is developed using MS Visual Basic programming language. The program employs Kleinlogel equations in the calculations of moments and reaction forces. The simplicity of building pipe-framed system and Kleinlogel equations provide a unique opportunity to develop a simple program. This study gives a detailed explanation of the methods and the software.
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    DESIGN AND TEST OF A LOW-COST ELECTRONIC NOSE SYSTEM FOR IDENTIFICATION OF SALMONELLA ENTERICA IN POULTRY MANURE
    (Amer Soc Agricultural & Biological Engineers, 2015) Kizil, U.; Genc, L.; Rahman, S.; Khaitsa, M. L.; Genc, T. T.
    The objective of this study was to design and evaluate the performance of a metal-oxide sensor-based electronic nose system (e-nose) for detecting Salmonella enterica in poultry manure. The system has hardware and software components for signal acquisition, data processing, and sample classification. An artificial neural network (ANN) model was used to classify manure samples as Salmonella-positive or Salmonella-negative. Seven manure samples were collected from different broiler houses and divided into four portions. Two portions were spiked with 10(3) and 2 x 10(3) CFU g(-1) of Salmonella enterica (ATCC 13311). The third portion was used for determining natural manure microflora, and the fourth portion was sterilized. All portions were incubated at 37 degrees C for 48 h. A total of 84 e-nose readings were recorded at different time intervals from the manure portions. A multilayer, feed-forward back-propagation ANN model was developed (training step) and validated with the e-nose readings. Of the 84 readings, 48 were used to develop the ANN model and the remainder was used to validate model performance. The model was able to classify the remaining 36 manure samples with an accuracy of 96%. In order to test the actual performance of the ANN model, 16 manure samples were collected from different barns and analyzed. The e-nose system was able to determine the Salmonella status of the manure samples with 100% accuracy.
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    E-nose identification of Salmonella enterica in poultry manure
    (Taylor & Francis Ltd, 2015) Kizil, U.; Genc, L.; Genc, T. T.; Rahman, S.; Khaitsa, M. L.
    A DiagNose II electronic nose (e-nose) system was tested to evaluate the performance of such systems in the detection of the Salmonella enterica pathogen in poultry manure. To build a database, poultry manure samples were collected from 7 broiler houses, samples were homogenised, and subdivided into 4 portions. One portion was left as is; the other three portions were artificially infected with S. enterica. An artificial neural network (ANN) model was developed and validated using the developed database. In order to test the performance of DiagNose II and the ANN model, 16 manure samples were collected from 6 different broiler houses and tested using these two systems. The results showed that DiagNose II was able to classify manure samples correctly as infected or non-infected based on the ANN model developed with a 94% level of accuracy.
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    Evaluation of RTK-GPS and Total Station for applications in land surveying
    (Indian Acad Sciences, 2011) Kizil, U.; Tisor, L.
    Accuracies of Real-Time Kinematic Global Positioning (RTK-GPS) system and Total Station (TS) were investigated in GIS environment. In geostatistical evaluations, Kriging method was used with spherical, exponential, and Gaussian models. The survey results demonstrated that an area of 3.5 ha or smaller can be best explained with Gaussian model, while the larger areas require a spherical model. A vertical error of 60 cm and a horizontal error of 30 cm can be observed when the survey points outside the construction area are eliminated. The optimum area per survey point was calculated to be 20x20 m(2) to increase the accuracy. This case study showed that an inaccurate survey can result cost over estimations up to 27%.