مسأله مکان یابی مقاوم سازی بیمارستان ها با منابع محدود در شرایط بحران و ازکارافتادگی تسهیلات

ساریخانی خرمی, سعیده; شیشه بری, داود

مسأله مکان یابی مقاوم سازی بیمارستان ها با منابع محدود در شرایط بحران و ازکارافتادگی تسهیلات

نوع مقاله : علمی - پژوهشی

نویسندگان

¹ دانش آموخته کارشناسی ارشد، گروه مهندسی صنایع، دانشگاه یزد، یزد، ایران

² استادیار، گروه مهندسی صنایع، دانشگاه یزد، یزد، ایران

چکیده

امروزه کاهش همزمان هزینههای مکانیابی و نیز هزینههای حمل و نقل در استقرار امکانات و تسهیلات شهری از اهمیت حساس و قابل توجهی برخوردار است. این موضوع زمانی حساسیت فوقالعادهای پیدا میکند که منطقه مورد بررسی در شرایط بحران قرار گرفته و عبور و مرور وسایل نقلیه و حمل و نقلهای اجتنابناپذیر در آن شرایط بسیار سخت و دشوار بوده و ممکن است خسارتهای مالی و جانی جبران ناپذیری را در پی داشته باشد. در این مقاله، یک مدل یکپارچه مکانیابی – مقاومسازی معرفی شده که با درنظر گرفتن شرایط بحران و ازکارافتادگی تسهیلات، مکانهای مناسب جهت استقرار بیمارستان‌های جدید را تعیین و به طور همزمان تعدادی از بیمارستان‌های موجود را جهت مقاوم‌سازی انتخاب مینماید. با توجه به بودجه در دست، تقاضای نقاط مختلف و پیشبینیهای صورت گرفته در مورد شرایط بحران، تصمیمات مکانیابی بیمارستان‌های جدید و مقاومسازی بیمارستان‌های موجود به صورت بهینه تعیین میشود. با توجه به اهمیت زمان در ارائه خدمات بیمارستانی اورژانسی، یکی از اهداف مدل، کمینه‌سازی بیشترین فاصله‌های تخصیص یافته است. هدف دیگر کمینه کردن تعداد تقاضاهایی است که در زمان بحران، به مکانی خارج از محدوده مورد نظر مانند شهرهای اطراف انتقال داده میشوند. با توجه به دوهدفه بودن مدل، روش محدودیت اپسیلون و نرم افزار GAMS 24.1.2 استفاده شده است. با توجه به امکان به‌کارگیری مدل در مسائل کاربردی و عملیاتی با ابعاد بزرگ و همچنین NP-Hard بودن مدل، الگوریتم فراابتکاری NSGA-II به کار گرفته شده و کارایی رویکرد پیشنهادی مورد بررسی و ارزیابی قرار می‌گیرد.

کلیدواژه‌ها

20.1001.1.20086598.1398.11.1.10.0

موضوعات

مهندسی صنایع - مسیریابی

عنوان مقاله [English]

The Hospital Location-Hardening Problem with Constrained Sources and Predetermined Capacities in Presence of Disruption and Facilities Failure Conditions

نویسندگان [English]

Saeedeh Saarikhani ¹
Davood Shishebori ²

¹ MSc. Grad., Department of Industrial Engineering, Yazd University, Yazd, Iran

² Department of Industrial Engineering, Yazd University, Yazd, Iran

چکیده [English]

Today, the simultaneous reduction of location costs and transportation costs in the establishment of urban facilities is of critical importance. This becomes extremely sensitive when the area under consideration is in crisis situations and the inevitable transit of vehicles and inland transportation is difficult in those circumstances and may cause financial and irreparable damages.
In this study, an integrated hospital location hardening is proposed in presence of disruption conditions and facility failures. With respect to the predetermined budget, demands of different points, and some predicting of disruption conditions, the optimizing is done. According to the importance of time in proposing of hospital emergency services, one of the objective functions is minimizing of the maximum allocated distances. Another objective function is minimizing the number of demands, which are allocated to far points. Regarding to the bi-objective mathematical model, the ε-constraint and GAMS software are applied. According to the application of the proposed model for the large-scale problems and The NP-Hard structure of the problem, the NSGA-II is applied and evaluated. In this study, an integrated hospital location hardening is proposed in presence of disruption conditions and facility failures. With respect to the predetermined budget, demands of different points, and some predicting of disruption conditions, the optimizing is done. According to the importance of time in proposing of hospital emergency services, one of the objective functions is minimizing of the maximum allocated distances. Another objective function is minimizing the number of demands, which are allocated to far points.
According to the two-objective mathematical model, the ε-constraint method and the GAMS 24.1.2 software are used. Due to the possibility of using the model in the large dimensional applications as well as the NP-hardness of the model, the NSGA-II meta-algorithm is applied and the efficiency of the proposed approach is examined and evaluated.

کلیدواژه‌ها [English]

Hospital location hardening
hospital emergency services
the ε-constraint method
GAMS 24.1.2 software

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