Now showing items 16-35 of 52

  • Energy consumption of VA hospital CT scans 

    Esmaeili, Mohammad Amin; Jahromi, Ashkan S.; Twomey, Janet M.; Yildirim, Mehmet Bayram; Overcash, Michael; Elsken, Tyson; Dominquez, Fernando; Thomas, Nicholas; Mcadam, Ashlee (IEEE, 2011-05)
    The United States healthcare spending was about $7,681 per resident and accounted for 16.2% of the nation's GDP in 2008 and rose to compromise about 18% of the nation's GDP by 2010. As healthcare sector continues to grow ...
  • Environmental impacts of healthcare services: delivery of x-ray services 

    Esmaeili, Mohammad Amin; Twomey, Janet M.; Yildirim, Mehmet Bayram; Overcash, Michael; Jahromi, Ashkan S.; Thomas, Nicholas; Mcadam, Ashlee; Dominquez, Fernando (IEEE, 2011-05)
    THE healthcare sector of the U.S rose to compromise about 18% of the nation's GDP in 2010. In meeting patient needs healthcare organizations spend nearly $8.8 billion each year on energy. To achieve energy reduction, the ...
  • A first best toll pricing framework for variable demand traffic assignment problems 

    Yildirim, Mehmet Bayram; Hearn, Donald W. (Elsevier, 2005)
    In this paper, we present a toll pricing framework for a general variable demand traffic assignment problem with side constraints, where the demand between an origin destination pair is a function of the least total travel ...
  • A framework to minimise total energy consumption and total tardiness on a single machine 

    Mouzon, Gilles C.; Yildirim, Mehmet Bayram (Taylor & Francis, 2008)
    A great amount of energy is wasted in industry by machines that remain idle due to underutilisation. A way to avoid wasting energy and thus reducing the carbon print of an industrial plant is to consider minimisation ...
  • A framework to minimize total energy consumption and total tardiness on a single machine 

    Mouzon, Gilles C.; Yildirim, Mehmet Bayram (Wichita State University. Graduate School., 2008-04-25)
    A great amount of energy is wasted in industry by machines which stay idle due to underutilization. A way to avoid consuming the wasted energy is to incorporate energy consumption into consideration while making the ...
  • Genetic algorithm to solve a multi-objective scheduling problem 

    Mouzon, Gilles C.; Yildirim, Mehmet Bayram (Wichita State University. Graduate School., 2007-04-27)
    Energy is expensive and a potential way to reduce energy consumption may be through using intelligent scheduling techniques. In this paper, we propose a genetic algorithm to solve a single machine scheduling problem where ...
  • A global learning experience in supply chain logistics management 

    Yildirim, Mehmet Bayram; Barut, Mehmet; Kilic, Kemal (2004)
    Global competition created multinational supply chains where raw materials from different countries are manufactured in a country, marketed in another, and consumed by consumers in different countries so that cost ...
  • Hospital patient-care and outside-the-hospital energy profiles for hemodialysis services: report of two cases 

    Soltani, Seyed A.; Overcash, Michael; Twomey, Janet M.; Esmaeili, Mohammad Amin; Yildirim, Mehmet Bayram (John Wiley & Sons Inc., 2015-06)
    Studies investigated the patient-care (in-hospital) and outside-the-hospital energy consumptions for delivering the hemodialysis (HD) service. A life cycle inventory methodology was used for this patient-based analysis for ...
  • Hospital radiology department overhead energy estimation 

    Esmaeili, Mohammad Amin; Jahromi, Ashkan S.; Twomey, Janet M.; Yildirim, Mehmet Bayram; Overcash, Michael; Dominquez, Fernando; Thomas, Nicholas; Mcadam, Ashlee (IEEE, 2011-05)
    The interest in the energy management is found in every sector of the economy. This is true of the commercial sector which includes the healthcare industry. The focus of this study is on estimating the overhead energy ...
  • Integrated maintenance and production planning with energy consumption and minimal repair 

    Yildirim, Mehmet Bayram; Nezami, Farnaz Ghazi (Springer, 2014-10)
    In this study, we analyze an integrated production-preventive maintenance planning problem where product processing times are affected by machine degradation. Preventive maintenance and repair can return the degraded ...
  • Machine number, priority rule, and due date determination in flexible manufacturing systems using artificial neural networks 

    Yildirim, Mehmet Bayram; Cakar, Tarik; Doguc, Ufuk; Meza, Jose L. Ceciliano (Elsevier, 2006-05-11)
    When there is a production system with excess capacity, i.e. more capacity than the demand for the foreseeable future, upper management might consider utilizing only a portion of the available capacity by decreasing the ...
  • A material handling scheduling system in an agent based environment 

    Thomas, S.; Krishnan, Krishna K.; Yildirim, Mehmet Bayram (2004)
    Agent based manufacturing systems are being developed to model and develop control strategies. Material handling systems when modeled as part of agent based system require new strategies for bidding. This paper describes ...
  • A material handling scheduling system in an agent based environment 

    Krishnan, Krishna K.; Jithavech, Id; Nayak, Chandan N.; Yildirim, Mehmet Bayram; Thomas, S. (2005)
    Adapting changes to satisfy demand is a must for any firm to survive in competitive environment. Changes narrate foremost to manufacturing environment which are dynamic and stochastic. In any job shop environment, material ...
  • A model for the multiperiod multiobjective power generation expansion problem 

    Meza, Jose L. Ceciliano; Yildirim, Mehmet Bayram; Masud, Abu S.M. (Institute of Electrical and Electronics Engineers, 2007-05-02)
    A long-term multiobjective model for the power generation expansion planning of electric systems is described and evaluated in this paper. The model optimizes simultaneously multiple objectives (i.e., minimizes costs, ...
  • A multi-objective model for power generation expansion planning 

    Masud, Abu S.M.; Meza, Jose L. Ceciliano; Yildirim, Mehmet Bayram (2007)
    This paper describes and evaluates a multi-objective generation expansion model that includes aspects such as incorporation of four objectives to generate the expansion alternatives, importance given to renewable ...
  • A multiobjective evolutionary programming algorithm and its applications to power generation expansion planning 

    Meza, Jose L. Ceciliano; Yildirim, Mehmet Bayram; Masud, Abu S.M. (IEEE, 2009-09)
    The generation expansion planning (GEP) problem is defined as the problem of determining WHAT, WHEN, and WHERE new generation units should be installed over a planning horizon to satisfy the expected energy demand. This ...
  • Nanofiber Fabrication and Characterization for the Engineering Education 

    Asmatulu, Ramazan; Yildirim, Mehmet Bayram; Khan, Waseem Sabir; Adeniji, Adebayo; Wamocha, Humphrey Lusenaka (2007)
    Electrospinning is a novel process of producing sub-micron and nano-sized fibers that consist of higher physical properties (e.g., surface area, porosity and flexibility). In a typical electrospinning process, a jet is ...
  • A neuro-genetic algorithm for parallel machine scheduling to determine the number of machines and priority scheduling rules 

    Yildirim, Mehmet Bayram; Barut, Mehmet; Cakar, Tarik (2004)
    In this paper, we propose a neuro-genetic artificial neural network framework to achieve certain targeted productivity measures/ performance values in a flow shop with parallel processors (resources) at each stage. The ...
  • A neuro-genetic approach to design and planning of a manufacturing cell 

    Cakar, Tarik; Yildirim, Mehmet Bayram; Barut, Mehmet (Springer Verlag, 2005)
    In this paper, we propose a neuro-genetic decision support system coupled with simulation to design a job shop manufacturing system by achieving predetermined values of targeted performance measures such as flow time, ...
  • A new dominance rule for the total weighted tardiness problem 

    Akturk, M. Selim; Yildirim, Mehmet Bayram (Taylor & Francis, 1999)
    We present a new dominance rule for the single machine total weighted tardiness problem with job dependent penalties. The proposed dominance rule provides a su cient condition for local optimality. We show that if any ...