مدل سازی و حل مسئله ی موازنه ی زمان، هزینه و کیفیت پروژه در شرایط وابستگی کیفیت به زمان و هزینه

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار گروه مدیریت صنعتی، دانشکده علوم اداری و اقتصاد، دانشگاه ولی عصر (عج)، رفسنجان، ایران (نویسنده مسئول)

2 استادیار گروه ریاضی کاربردی، واحد سیرجان، دانشگاه آزاد اسلامی، سیرجان، ایران

چکیده

در پژوهش حاضر مسئله ی موازنه ی زمان هزینه کیفیت از یک منظر جدید فرمولبندی و حل می شود. بدین - -
منظور، ابتدا کیفیت اجرای هر فعالیت به صورت تابعی از زمان و هزینه تعریف شد، سپس با تعریف کیفیت
اجرای پروژه به صورت کمترین مقدار کیفیتِ اجرای فعالیت های آن و رعایت روابط پیش نیازی بین فعالیت ها،
یک مدل برنامه ریزی سه هدفه برای موازنه ی زمان، هزینه و کیفیت فرمولبندی گردید. برای حل مسئله، توابع
هدفِ مربوط به زمان و هزینه به صورت آرمان هایی فازی توصیف شده و از یک رویکرد تصمیم گیریِ فازی
برای بازنویسیِ مدل سه هدفه ی پیشنهادی به صورت مدلی تک هدفه استفاده گردیده است. تولید یک جواب
نهایی، به جای مجموعه ای از جواب های کارای پارتو، از مزیت های روش پیشنهادی است، که مانع از
سردرگمیِ تصمیم گیرنده می شود. به منظور توصیف عملکرد و کاربرد بالقوه ی روش پیشنهادی، مسئله ی
موازنه ی زمان هزینه کیفیت برای یک پروژه با داده های واقعی مربوط به سازمان نوسازی، توسعه و تجهیز - -
مدارس استان کرمان حل گردید. در پایان نیز، به منظور اعتبارسنجیِ مدل و روش پیشنهادی از یک فرایند
تحلیل پارامتری، که پارامترهای اصلی مدل را به صورت سیستماتیک تغییر می دهد، استفاده شد.

کلیدواژه‌ها


عنوان مقاله [English]

Modelling and Solving the Project Time-Cost-quality trade off Problem on Condition of the Dependence of Quality on Time and Cost

نویسندگان [English]

  • Abbas Shoul 1
  • Esmaeil Keshavarz 2
چکیده [English]

In the present research, Time-Cost-Quality trade off problem is formulated and solved, from a new point of view. To this end, quality is defined as a function of time and cost, then by defining the project’s quality as minimum value of quality of activities and regarding predecessor relations between activities, a tri-objective programming model is formulated to trade off the time, cost and quality. In order to solve the problem, objective functions of time and cost described as fuzzy goals and a fuzzy decision-making methodology has been used to reformulate the proposed tri-objective model to a single-objective model. Producing a final solution, instead of a set of Pareto efficient solutions, is one of the advantages of proposed method, which prevents decision maker from confusion. In order to describe performance and show the potential applicability of proposed methodology, a time-cost-quality trade-off problem for a project with real data from Organization for Renovating, Developing and Equipping Schools of Kerman province is solved. Finally, in order to validate the proposed model and method, a parametric analysis, which systematically varies the main parameters of model, is employed.

کلیدواژه‌ها [English]

  • Project scheduling
  • Time
  • cost and quality trade-off
  • multi-objective programming
  • fuzzy goal
  • fuzzy decision making
 
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