31805

طراحي شبكه و برنامه ريزي زنجيره تأمين برنج با ملاحظات پايداري (مطالعه موردي)

دكتري تخصصي (PhD)

مهندسي صنايع- صنايع

1392

1403/4/24

ابراهيم تيموري

فرناز برزين پور

پرديس دانشگاهي - دانشكده مهندسي صنايع

زنجيره تامين مواد غذايي كشاورزي غلات مختلف مانند گندم، برنج و ذرت شامل فرآيندهاي مختلفي از تامين نهاده ها، كشت، داشت، برداشت، فرآوري تا توزيع است. برنج يك غله مهم است كه بخش مهمي از رژيم غذايي مردم در سراسر جهان را تشكيل مي دهد. فائو پيش بيني مي¬كند كه مصرف جهاني برنج در سال 2019 با 5.2 ميليون تن افزايش به 509.1 ميليون تن در سال برسد. برنج يكي از كالاهاي اساسي مهم در كشور ما مي باشد كه بخش زيادي از سبد غذايي خانوار را تشكيل مي‌دهد؛ لذا وجود زنجيره تأمين مناسب كه تداوم عرضه را در طول زمان تضمين نمايد، بسيار مهم و حياتي است. در زنجيره¬ تامين برنج مسائل كاشت، داشت، برداشت، فرآوري و توزيع جزء موارد مهم در اين حوزه محسوب مي‌شوند كه درتحقيقات پيشين توجه همزمان و يكپارچه به تمام اين مسائل در زنجيره تامين از نظر به دور مانده است. در شبكه توليد تسهيلاتي نظيرزمين¬هاي كشاورزي، انبارها و مراكز فرآوري و توزيع وجود دارند. مكان¬يابي بهينه اين تسهيلات ميتواند نقش موثري در كارايي و اثر بخشي زنجيره داشته و سود حاصل از اين تسهيلات را افزايش داده و از هزينه ها بكاهد. اين تحقيق، طراحي شبكه و برنامه¬ريزي زنجيره-ي تأمين برنج با ملاحظات پايداري بصورت يكپارچه مي باشد. شبكه زنجيره¬ي تأمين برنج پيشنهادي در قالب يك مدل رياضي غيرقطعي براي طراحي شبكه و برنامه-ريزي فرموله مي¬شود. از آن جايي كه مدل مذكور به صورت سه هدفه مدلسازي شده است، لذا از يك روش بهينه¬سازي چندهدفه استفاده مي¬شود. براي مواجه با عدم قطعيت، سناريوهاي محتمل براي حالت¬هاي خوش¬ بينانه، بد بينانه و عادي در نظر گرفته شده است. پس از حل با استفاده از نرم¬¬افزار بهينه¬سازي گمز، خروجي¬ها ارايه و تحليل مي¬شوند و در نهايت نتايج مديريتي بيان مي¬شوند. يافته¬هاي اين تحقيق نشان مي-دهد كه بازنگري در طراحي شبكه و برنامه¬ريزي در كنار اصلاح فرآيندهاي زنجيره سبب كاهش 7%ضايعات برنج، 50% سطح زير كشت و21% مصرف آب وافزايش 20%عملكرد در هكتارو بهبود عملكرد زنجيره¬¬ي تأمين برنج ، كاهش هزينه¬هاي زنجيره، و آلودگي¬هاي زيست محيطي از طريق كاهش مصرف سم و كود مي-شود.نگاهي به قيمت برنج در سال جاري بيانگر اين موضوع ميباشد كه استفاده ازنتايج اين تحقيق توسط دولت باعث جلوگيري از افزايش بي رويه قيمتها ، نوسانات قيمت وافزايش خريد تضميني برنج شده است.

1403/10/12

Rice supply chain network design and planning with sustainability considerations (case study)

7/14/2025 12:00:00 AM

The agricultural food supply chain of various grains such as wheat¡ rice and corn includes various processes from supply of inputs¡ cultivation¡ storage¡ harvesting¡ processing to distribution.Integrating the management of these processes to reduce costs in addition to providing sufficient supply is one of the main goals of agricultural supply chain management. Rice is an important cereal that forms an important part of the diet of people around the world. FAO predicts that world rice consumption will increase by 5.2 million tons in 2019 to reach 509.1 million tons per year. Rice is one of the important basic commodities in our country¡ which constitutes a large part (about 30% of hydrocarbons) of the household food basket¡ so the existence of a suitable supply chain that guarantees the continuity of supply over time is very important and vital.The annual consumption of rice in Iran is between 3 and 3.5 million tons. Rice production¡ which is the main component of agricultural ecosystems¡ faces threats of various uncertainties.Environmental uncertainties play an important role in the implementation of strategic supply management initiatives. In the supply chain of rice¡ the issues of planting¡ storage¡ harvesting¡ processing and distribution are among the important issues in this field. Optimization leads to the appearance of the following optimal points.In the production network¡ there are facilities such as agricultural lands¡ warehouses and processing and distribution centers.Proper and optimal location of this facility can play an effective role in the efficiency and effectiveness of the chain and increase the profit from this facility and reduce costs.The agricultural areas studied in this research include the provinces of Golestan¡ Gilan¡ Mazandaran and Khuzestan¡ which cover about 95% of the country's total production. In each of these provinces¡ there are three parts¡ central¡ eastern and western¡ where agricultural areas and paddy fields are defined in these areas. After the planting operation¡ the paddy harvest is transferred to the rice threshing warehouses or rice threshing units¡ and after processing¡ they are sent to the warehouses and then to the distribution centers. The future problem in this research is the design of the network and the planning of the rice supply chain with sustainability considerations in an integrated manner. The proposed rice supply chain network is formulated in the form of a mathematical model for network design and planning¡ since the said model is modeled as three objectives¡ therefore¡ a multi-objective optimization method is used. For this purpose¡ Torabi-Hosseini (TH) method has been used. And after solving by using Gamez optimization software¡ the outputs are presented and analyzed. The proposed rice supply chain network is formulated in the form of a non-deterministic mathematical model for network design and planning. Since the mentioned model is modeled in the form of three objectives¡ therefore¡ a multi-objective optimization method is used. To face uncertainty¡ possible scenarios for optimistic¡ pessimistic and normal states have been considered. After solving by using Gems optimization software¡ the outputs are presented and analyzed and finally management results are expressed. The findings of this research show that the revision of network design and planning along with the modification of the chain processes led to a reduction of 7% of rice waste¡ 50% of the cultivated area and 21% of water consumption¡ and an increase of 20% in performance per hectare¡ improving the performance of the rice supply chain¡ reducing the costs of the chain¡ and environmental pollution through reducing the consumption of poisons and fertilizers. A look at the price of rice this year shows that the use of the results of this research by the government will prevent the increase in The trend of prices¡ price fluctuations and increase in the purchase of rice has been guaranteed.

زنجيره تأمين برنج , طراحي شبكه , برنامه ريزي , توزيع , پايداري زيست محيطي , مدل رياضي , پايداري اجتماعي

Rice Supply chain , network design , Planning , distribution , environmental sustainability , mathematical model , Social Sustainability

Seyed Jifroodi

Dr. Teymoori