Tarımsal Değer Zincirlerini Sistem Dinamikleri Modellemesi ile Anlamak ve Bir Zeytinyağı Değer Zinciri Uygulaması

Atamer Balkan, Büşra
Meral, Fatma Sedef
Agricultural value chains refer to the set of actors and processes that transform the raw agricultural crop on the farm to the final agricultural product on the consumer’s table. Decision making for agricultural value chain development is a complex research problem since agricultural value chains include causal nonlinear relationships, multiple stakeholders with different points of view, and embedded feedback structures. Traditional approaches in the field primarily focus on quantitative and qualitative analysis of the historical or current data regarding the agricultural value chain under study, and they are usually limited in answering the questions about the economic impact of the value chain interventions in the future. Understanding agricultural value chain dynamics and making quantitative policy assessments for development require the use of appropriate complex system science methods. This chapter (i) presents the agricultural value chain framework with the existing literature, (ii) introduces the main ideas of the system dynamics methodology, (iii) illustrates the use of system dynamics modeling to understand the supply, demand, capacity, and price dynamics in agricultural value chains and (iv) demonstrates the application of the model to a real-world case. System dynamics is a mathematical modeling and simulation methodology that is mainly used to model dynamic and complex socio-economic problems. To illustrate the use of system dynamics in decision-making for agricultural value chain interventions, a simulation model representing the market dynamics of an agricultural commodity is introduced. The model captures both the agricultural supply chain (i.e., flow and physical transformation of the product from seed to fork) and the agricultural value chain (i.e., formation of added cost and price elements during flow and transformation)structures. To demonstrate the use of the model as a decision support tool in a real-world case, an application to the Turkish olive oil value chain is presented. Based on the results of the policy analysis for the specific case of the Turkish olive oil value chain, it is observed that empowering cooperative action in one stage of the chain improves the total wealth along the value chain as a whole. By providing an insight into the dynamic behavior of different price levels along the value chain associated with the policy decisions, the results of this study indicate that considering an agricultural value chain as a complex system rather than a linear series of processes is more than crucial.


System dynamics modeling of agricultural value chains: the case of olive oil in Turkey
Atamer Balkan, Büşr; Meral, Fatma Sedef; Department of Industrial Engineering (2019)
In recent decades, agricultural commodity and food price fluctuations reveal the importance of understanding the agricultural value chain dynamics and making policy recommendations for sustainable development. The modeling purpose in this study is twofold: (1) to understand the price, supply and demand dynamics along the agricultural commodity value chains (2) for the specific case of olive oil value chain in Turkey, to make policy and scenario analysis with the focus of economical sustainability. In line w...
Sustainable design implications for alternative food networks: A case on Güneşköy's community supported agriculture (CSA) model
Kaplan, Ayşe; Doğan, Çağla; Department of Industrial Design (2021-6)
The global food system consists of complex processes (i.e., food production, distribution, consumption, and disposal) and contains several environmental, economic, and social sustainability challenges. As a result of the food system's problems, some producers and consumers have taken actions that have resulted in the emergence of alternative food networks. These are primarily bottom-up initiatives led by creative and innovative groups of people collaborating to develop alternative food-system solutions. Dif...
Pectinase production using apple pomace as carbon source by mixed culture fermentation
Kuvvet, Ceren; Çekmecelioğlu, Deniz; Department of Biotechnology (2016)
There is a growing interest in enzyme production from food and agricultural wastes to reduce the cost of production. Pectinases are one of the important group of enzymes used in fruit processing, alcoholic beverages, coffee and tea fermentation and textile industries. Pectinases can be produced by both solid state and submerged fermentation from various plant and microorganisms; however fungal microorganisms are the largest sources of bulk commercial enzymes and there are numerous studies on pectinase produ...
Ca-D(-)-lactate production from orange baggase via enzymatic hydrolysis and fermentation
Baltacı, Saadet Fatma; Hamamcı, Haluk; Department of Food Engineering (2016)
The utilization of low-cost renewable carbohydrate sources for the production of lactic acid which is widely used organic acid in food and polymer industry is a recent strategy in bioeconomy. The objective of this work was to produce Ca-D(-) -lactate as a precursor for D(-)-polylactic acid through the bioconversion of orange bagasse (OB) by enzymatic hydrolysis and fermentation. The hydrolysis of OB carried with dried and fresh OB, and cellulolytic and pectinolytic enzymes at 55 C, 150 rpm and 4.8 pH to eva...
A Translog cost function analysis of Turkish agriculture
Sel, Güney; Güzel, Alper; Department of Economics (2002)
This work examines the costs occurred in the agricultural production process in Turkey employing agricultural data from 1970 to 1999. A Translog specification will be used to represent the cost pattern of the Turkish Agricultural Production. The Translog Cost Function is the most frequently used flexible function in empirical work, which is well known for its flexible functional form in terms of the local second-order approximation to any arbitrary functional form. The model that is considered in this study...
Citation Formats
B. Atamer Balkan and F. S. Meral, Tarımsal Değer Zincirlerini Sistem Dinamikleri Modellemesi ile Anlamak ve Bir Zeytinyağı Değer Zinciri Uygulaması. 2020.