فهرست مطالب

Applied Research on Industrial Engineering - Volume:5 Issue: 2, 2018
  • Volume:5 Issue: 2, 2018
  • تاریخ انتشار: 1397/06/31
  • تعداد عناوین: 7
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  • Hossein Malekmohammad, Saeed Jamalzadeh , Nima Moradi * Pages 97-109
    Nowadays, due to continuous changes in the environment of organizations, the performance evaluation of productive or non-productive companies is not as simple as the past. In spite of the high sale and income of existing companies in the game industry, there are always unsuccessful game products and failed companies. So the digital game industry needs an appropriate performance evaluation system. In this paper, a model for performance assessment of companies in the digital game industry is proposed using integrated Analytic Hierarchy Process (AHP) and Balanced Scorecard (BSC) approach. In order to design the evaluation system, the strategies and visions of the game companies are extracted as the initial step. The next step is to extract corresponding attributes and measures based on the four dimensions of the Balanced Scorecard. In the following, the weights of each measure, attributes and dimensions are obtained based on the expert’s opinion. Finally, the results of the implementation of the proposed model of the digital game company are calculated and the efficiency of the model for performance evaluation of the digital game industry is shown.
    Keywords: Digital Game Industry, Performance evaluation, Balanced Scorecard Method, AHP
  • Hamiden Abdelwahed Khalifa * Pages 110-121
    In this paper, a Fuzzy Multi-Objective Linear Programming (FMOLP) problem having both objective functions and constraints fuzzy parameters is introduced. Theses fuzzy parameters are characterized by trapezoidal fuzzy numbers. The FMOLP problem is converted into the corresponding deterministic MOLP problem through the use of intervals arithmetic operations. Then, a two-phase approach having equal weighted coefficients is proposed to generate an efficient solution for the MOLP problem. The major advantage of the new model is that the proposed approach as long as the weighted coefficients not necessarily equal and generates an efficient solution. A numerical example is given to clarify the obtained results.
    Keywords: Multi-Objective Programming Problems, Fuzzy Parameters, Fuzzy Numbers, Efficient Solution, Two-Phase Approach, Compromise Index
  • Syufrianto Asmit *, Hernadewita Hernadewita, Ahmad Ismail Pages 122-130
    Genset or generator set is one of the sources of electricity used in oil palm plantations; genset are placed in a special building that is a Genset’s house. Some of the problems encountered in the Genset’s house are oil spills, fuel oil spills, and dirty floors; scattered items in Genset’s house, packaging of hazardous and untreated substances, no safety sign board, and no work instruction. The study has conducted in an oil palm plantation company located in Central Kalimantan Province. The used method in this study is 5S (Seiri, Seiso, Seiton, Sheiketsu, and Shitsuke) by observing, interviewing, and literature review related to the discussed aspects. The results of the study show that the implementation of 5S makes the Genset’s house cleaner, the more orderly place of the goods, the no oil spill, the wider genset room, and the fundamental advantage is to reduce the environmental pollution due to the hazardous and toxic substances. So that the applied 5S principle to other parts of the company has proved to be effective in the maintenance of Genset’s houses and has reduced the possibility of fires and accidents.
    Keywords: Genset, 5S, Genset’s House
  • kolsoom Ahmadi * Pages 131-145
    We present a modification of three existing methods for finding a basic feasible solution for capacitated transportation problem‎. ‎To obtain an optimal solution, ‎the simplex algorithm for bounded variables is applied‎. ‎Special properties of transportation problem help us to operate each step of simplex algorithm directly on the transportation tableau‎. ‎At last, numerical examples are represented to illustrate our method‎.
    Keywords: ‎Balanced Transportation Problem‎, ‎Capacitated Transportation Problem‎, ‎Simplex method, Bounded Variables
  • Adeniran Adetayo Olaniyi *, Kanyio Olufunto Adedotun, Owoeye Adelanke Samuel Pages 146-155
    Two years single moving average and simple exponential smoothing with smoothing constant of 0.9 were applied to forecast the 2018 demand for domestic air passenger in Nigeria. Also, the two methods of forecasting were evaluated and compared with Mean Squared Deviations (MSD) to determine which method gives the lowest deviation as it will produce best forecast for the year 2018 domestic air passenger demand in Nigeria. The study relied on data of domestic air passenger demand between the periods of the year 2010 to the year 2017. It was revealed that the MSD of two yearly single moving average gave the best year 2018 forecast as it has a lower MSD when compared to the MSD of simple exponential smoothing with the smoothing constant of 0.9. This study is useful in the planning process of an airport, airline, and other stakeholders involved in Nigeria’s air transportation. It will help to prevent problems of having excess air transport demand over air transport supply or having excess air transport supply over demand.
    Keywords: Forecasting, Domestic Air Passenger Demand, Single Moving Average, Simple Exponential Smoothing
  • Amir Parnianifard *, Siti Azfanizam Ahmad, Mohd Khairol Anuar Ariffin, Mohd Idris Shah Ismail Pages 156-168
    Computational complexity and time-consuming iteration of simulation for tuning of Proportional-Integral-Derivative (PID) controller is a common drawback in many types of existing methods. This paper aims to propose a new method for achieving an optimal design for PID gains parameters with the least number of simulation runs. To achieve this purpose, we combine polynomial regression and Latin Hypercube Sampling (LHS) in order to Design and Analyze of Computer Experiments (DACE). In this method, the LHS is performed three times to design the associated sample points for different usage that includes training sample points to fit polynomial regression as a common surrogate model; validating sample points to scale standardized residuals; grid search sample points for investigating optimal point over whole design space. To show the flexibility and applicability of the proposed method, we serve a numerical case in the tuning of PID controller for linear speed control of Direct Current (DC) motor. Four different polynomial regression fit input/output (I/O) data over separately four model’s performances that includes Integral-Square-Error (ISE), Integral-Absolute-error (IAE), Integral-Time-Square-Error (ITSE), and Integral-Time-Absolute-Error (ITAE). Comparison of the result with two existing approaches such as traditional Zeigler-Nichols method and Taguchi-Gray Relational Analysis (Taguchi-GRA) confirms the reliability and superiority of the proposed method.
    Keywords: Polynomial Regression, PID Controller, DC Motor, Simulation Optimization, Computer experiments, Latin Hypercube Sampling
  • Saadoon Fahad Dakhil *, Kifaya Oudah Pages 169-180
    The hot climate in Basra city requires many research to find a solution to reduce heat. Usually, the thermal pump needs an external energy to ensure its continued operation. The objective of the study is the possibility of building a heat pump using renewable energy. The present work addresses a renewable energy heat bump by using paraffin wax during the daytime. The experimental and the CFD model of the solar collector and Thermal Energy Storage (TES) system based on Phase Change Materials (PCM) as a renewable heat pump system are presented. The system consists of three main parts: The solar collector, paraffin wax cavity, and cooling room. An experimental rig is constructed to conduct a practical analysis by measuring the intensity of solar radiation at different hours of the daytime. Temperatures distribution are measured with 24 type K thermocouples at different sites for the system. A numerical investigation has carried out to predict flow and heat transfer for the solar heat pump. Free convection of turbulent flow with 2-D unsteady state incompressible flow is examined. The numerical work is divided into two parts: The first part presents the development of numerical models of the heating collector room while the second is the numerical model of paraffin wax room. ANSYS FLUENT code 16 is applied to solve Navier Stock, energy, and k-Ɛ model equations by using finite volume method. The calculations of the velocity, temperatures distribution, and the Nusselt number values with different Rayleigh number for air at both heat collector room and paraffin wax room at different daytime are reported.The results of the present work guarantee future development of this technology for the food or agriculture industry. Maximum cooling temperature of the hot air is reached more than 20oC. It is found that a PCM leads to maximum energy savings and greater peak load at high solar intensity value. The practical results are also compared with numerical results, and good agreement is obtained.
    Keywords: Free Convection, Parafin Wax, Heat Pump, CFD