INVITED SPEAKER at MITRANS: AHP for Supply Chain Management


Seminar Room, Level 1, PTAR 1 Universiti Teknologi MARA, Shah Alam, Malaysia

Workshop material as follows:

INVITED SPEAKER at UKP4: Workshop on System Modeling for Policy Development

An Inventory Model in Humanitarian Logistic: A Preliminary Study

Rika Ampuh Hadiguna
Department of Industrial Engineering, Faculty of Engineering, Andalas University, Limau Manis, Padang, 25163 Sumatera Barat

The main problem in disaster relief logistics, among others unpredictability of demand in terms of timing and location, suddenly-occurring demand in very large amounts and short lead times for a wide variety of supplies, high stakes associated with adequate and timely delivery, lack of resources such as supply, people, technology, transportation capacity, and budget. The role of decision support systems are needed to help decision maker’s better plan in humanitarian logistics operations. The aim of research is develop an inventory model in humanitarian logistics namely create a computer model as decision support system. The model proposed here aims to coordinate the transportation of commodities from major supply centres to distribution centres in affected areas. The goal is to minimize delay in providing prioritized commodity. System dynamics methodology was developed to assist with complex decision making in humanitarian logistics. Specifically, it was developed to study systems characterized by multiple feedback loops, uncertainty, and time lags. This paper has been introduced the usage of system dynamic methodology that has expanded to include social and environmental issues. As such, it is therefore an appropriate methodology to capture the complexity of these systems.

Keywords: humanitarian logistics, inventory, system dynamics, decision support system

International Research Grant - Malaysia Institute of Transport


Dr. Harlina Suzana Jaafar
Assc. Prof. Sabariah Mohammad
Dr. Rika Ampuh Hadiguna

In recent years, supply chain problems can be formulated how to meet demand under social, environmental and economic issues consideration. The main purpose of model development intended to support the decision maker for solving the supply chain problem using sustainable perspective. Decision maker always undertake to express their knowledge about probabilities and weights in precise numerical form may result in misleading assessment and biases. The problems are associated with the use of non numeric group decision making for sustainable supply chain problems is, amongst others: (i) what kind of critical attributes that are used in multi criteria decision making for sustainable supply chain management of malaysia industry; (ii) how to compute the critical attributes value based on multi person jugdment with non numeric type in group decision making.

Thereby, this study embarks on the following objectives are (i) investigate critical attributes that are used in multi criteria decision making for sustainable supply chain management; (ii) design a decision support system based on mathematical model for group based non numeric multi criteria decision making that involve critical attributes in sustainable supply chain management problems.

This research will be conducted in several stages as follows: firstly, observing the real system through industry visits and interviews to build the conceptual model. Secondly, identifying and formulating the attributes of sustainability in supply chain system through in deep interview and expert opinion questionnaire. Thirdly, formulating the mathematical model and building the computation procedure for solving mathematical formulation. Fourthly, designing decision support system, and finally, performing simulation and analysis to verify the software as a new tool for decision maker.

At the end of the computer simulation, it is expected that we will discover a new knowledge about the critical attributes of the sustainable supply chain management. Non numeric group decision making developed will be a new assessment approach to solve the problem of determining the priority of the critical attributes based on the opinion of many decision maker.

International Research Grant (AIIRHID) - Deakin University & Andalas University

Assessment Model for Location Evacuation Feasibility in Post Disaster Logistics Considering Local Culture Attributes

Dr. Rika Ampuh Hadiguna
Prof. Dr. Richard Reed
Ir. Insannul Kamil, M.Eng, IPM

Rationale and Objectives of the research project
After disaster occurred, many infrastructures are either damaged or destroyed. In Indonesia, many mosques are still in good condition in order to accommodate the evacuees. Mosque is public property as manifestation of local cultural that has strategic function and role in social life in Indonesia. Mosque is a facility for worship as well as meeting to formulate various problems solving. Mosque has sufficient facilities to become hub. Generally, mosque has area more 600 m2, well organized, good sanitary and located in densely populated. This means that mosque can be used as inventory facilities and evacuation location of disaster.
The objective of research project is developing assessment model of mosque feasibility as hub in post disaster logistics system. Output of research is a decision support system that needed to help decision makers in disaster logistics operations. Research project will be conducted in Kota Padang. The benefit of model is help decision maker to coordinate the relief logistics from local distribution centre to evacuation locations in disaster affected areas. Model is being formulated with emphasis on local distribution.

Research Method
Research procedure will be performed by applying various concepts and methods with detail as follows:
1.    A need analysis will be conducted on the basis of in-depth interviews with experts, senior officers in regional disaster agency in Kota Padang, and NGO’s. The need analysis will determine the difference between the actual state and a desired future state of a system with procedure as follows:
-   Survey mosques in Kota Padang
-   Identify stakeholders and requirement.
-   Formulate objectives.
-   Design questionnaire
2.    Determining property valuation with the following steps:
-   Distribute questinnaire to respondends.
-   Determine attributes relating objectives
-   Verify attributes using face validity
3.    Design computer model using web based approach by means:
-   Create algorithm and computer coding
-   Verify model using guestimate data
4.    Generalize the findings in the following:
-   Sensitivity analysis relating to policy alternatives.
-   Finding the critical attributes based on the simulation results.
5.    Concluding and generalization the findings as a new knowledge.

Hibah Penelitian - DIKTI Kemendikbud


Masrul Indrayana, MT
Dr. Ambar Rukmini
Dr. Rika Ampuh Hadiguna

Penelitian ini bertujuan mengembangkan sebuah sistem manajemen risiko rantai pasok sayuran segar di Wilayah Propinsi D.I Yogyakarta dan sekitranya sehingga mampu meningkatkan daya saing dengan tetap memperhatikan kesejahteraan para petani. Secara khusus penelitian ini bertujuan untuk mengembangkan model rantai pasok sayuran segar pada tingkat strategis dengan pemilihan produk unggulan dan struktur rantai pasok yang mengakomodir berbagai kepentingan para pelaku dalam sistem. Kedua, mengembangkan model penunjang keputusan produksi dan distribusi rantai pasok sayuran segar dalam bentuk perangkat lunak sistem penunjang keputusan tepat guna.

Model rantai pasok sayuran segar sangat dibutuhkan khususnya oleh pemerintah dalam membangun sebuah sistem rantai pasok pangan yang efisien dan efektif dengan memperhatikan kesejahteraan petani. Rantai pasok sayuran adalah salah satu masalah yang masih baru dan sangat menarik perhatian para peneliti pada saat ini untuk dipelajari dan dikembangkan berbagai modelnya untuk menunjang pengambilan kebijakan. Salah satu faktor yang perlu diteliti dalam sistem rantai pasok sayuran segar adalah struktur rantai pasok yang memberikan manfaat nilai tambah bagi para petani agar kesejahteraannya meningkat.

Rangkaian kegiatan penelitian dilakukan dalam beberapa tahapan. Pertama, merumuskan karakteristik kualitas sayuran segar berdasarkan preferensi konsumen menggunakan metoda quality functin deplyomentI (QFD). Pada tahapan ini akan diperoleh atribut kualitas sayuran mulai dari panen, pemrosesan (processing), pengemasan dan penjualan. Kedua, memilih produk sayuran unggulan yang berpotensi untuk didorong menjadi komoditas ekspor dan rekayasa sistem rantai pasoknya. Tahapan ini menggunakan metoda analytical hierarchy process (AHP). Ketiga, membangun strategi rantai pasok komoditas sayuran segar unggulan menggunakan metoda SWOT. Tahapan ini bertujuan mendapatkan rumusan strategi untuk menjamin keberlanjutan dan penetrasi pasar baik lokal, regional dan ekspor. Keempat, pengembangan model produksi dan distribusi sayuran segar dengan studi kasus pada swalayan berdasarkan struktur rantai pasok yang telah ditetapkan terlebih dahulu. Tahapan ini akan mengembangkan model matematik. Model yang dihasilkan akan diwujudkan dalam bentuk perangkat lunak sistem penunjang keputusan. Dan kelima, verifikasi dan validasi model dilakukan untuk mendapatkan model yang sesuai secara konseptual dan diterima oleh pihak-pihak yang berkepentingan.

Hibah Penelitian Fakultas Teknik UNAND


Dr. Rika Ampuh Hadiguna
Ardhian Agung Yulianto, MT
Agus Wibowo, ST
Masalah dalam penelitian ini adalah:
1.   Bagaimana pengaruh perilaku sistem logistik makanan dalam penanggulangan bencana alam gempa dan tsunami di Kota Padang.
2.   Parameter apa yang mempengaruhi kebijakan strategi dalam sistem logistik makanan dalam penanggulangan bencana alam gempa dan tsunami di Kota Padang.

Tujuan yang ingin dicapai melalui penelitian ini adalah:
1.   Merancang model simulasi sistem dinamis logistik bantuan dalam penanggulangan bencana alam gempa dan tsunami di Kota Padang.
2.   Menganalisis parameter-parameter yang memberi pengaruh pada sistem logistik bantuan bencana saat terjadi bencana alam gempa dan tsunami di Kota Padang.

Penelitian ini menggunakan pendekatan sistem dalam membangun model dan menganalisis parameter-parameter logistik bantuan bencana dengan tahapan sebagai berikut :
1.   Konseptualisasi model
2.   Identifikasi kepentingan setiap stakeholder
3.   Formulasi model dan algoritma simulasi
4.   Simulasi
5.   Verifikasi
6.   Validasi
7.   Analisis berbasis simulasi

Publication in collaboration with Malaysia Institute of Transport (MITRANS)

Performance measurement for sustainable supply chain in automotive industry: a conceptual framework

Rika Ampuh Hadiguna; Harlina Suzanna Jaafar; Sabariah Mohamad

International Journal of Value Chain Management,  Vol. 5, No. 3/4, pp.232-250, 2011

Many automobile organisations need to establish suitable measures for effective green supply chain performance measurement because they have failed in supply chain management due to their inability to develop the performance measures and metrics required for complete supply chain integration and performance measurement. This paper discusses how these challenges may be addressed through the application of a systems approach to sustainable performance measurement of automotive supply chain management. This paper briefly reviews some of papers published to evaluate and develop performance measurement of automotive supply chain as a hybrid concept.

Keywords: performance measurement; sustainable supply chains; automotive supply chains; automobile industry; supply chain management; SCM; supply chain integration.

DOI: 10.1504/IJVCM.2011.043228 

A model for vendor managed inventory by applying the economic order quantity with fuzzy demand

Rika Ampuh Hadiguna; Harlina Suzana Jaafar; Sabariah Mohamad

International Journal of Enterprise Network Management, Vol. 4, No. 4, pp.354-366, 2011

This paper presented a decision support model for VMI system by applying the economic order quantity (EOQ) with fuzzy demand. The model of fuzzy EOQ that has been developed in this study is intended to accommodate the fuzzy demand. Result of the study shows that the optimal quantity of fuzzy EOQ is influenced by the value of ?1 and ?2. It was known that the value of order quantity (q) will be increased if the decision-makers getting more optimistic regarding the upper limit of the sales forecast implementation. The model formulation that has been introduced fuzzy number for demand to accommodate uncertainty situation.

Keywords: decision support models; vendor managed inventory; VMI; fuzzy demand; economic order quantity; EOQ; supply chain management; SCM; uncertainty.

DOI: 10.1504/IJENM.2011.043798 

Decision support framework for risk assessment of sustainable supply chain

Rika Ampuh Hadiguna

International Journal of Logistics Economics and Globalisation, Vol. 4, No. 1/2, pp.35-54, 2012

Decision support systems can play a role in improving the ability of decision-makers to assess and decide as good as. We introduced new paradigm in sustainable assessment in supply chain operations. Conceptual thinking is conducted by analysing two types of thinking namely general framework of supply chain risk management and assessment of sustainable supply chain. The content of the two types of the conceptual thinking will be analysed by observing diverse perspectives such as the constituent components, structuring the components and process of adoption. We found that there are three aspects in risks of sustainable supply chain namely economics, environment and social politics aspects. Product, processes and information flow are elements that interact with each aspect as a whole system. We proposed a conceptual model of decision support for risk assessment of sustainable supply chain. It has provided functional capabilities: modelling, data management, and knowledge management to support all decision-making processes. All risk indicators are arranged in the structure hierarchical. The proposed decision support is applying non-numeric under multi decision-maker's assessment. We presented a decision support framework that applicable in principle. The proposed system provided for eligibility proof to be implemented.

Keywords: decision support systems; DSS; sustainable supply chains; supply chain management; SCM; risk assessment; indicators; modelling; data management; knowledge management; sustainability.

DOI: 10.1504/IJLEG.2012.047213 

Model Penilaian Risiko Berbasis Kinerja untuk Rantai Pasok Kelapa Sawit Berkelanjutan di Indonesia

Rika Ampuh Hadiguna

Jurnal Teknik Industri, Vol. 14, No. 1, pp.13-24, 2012 (Accredited by Ministry of Education and Culture Republic of Indonesia)

As the country's largest palm oil producer in the world, Indonesian palm oil production is still encounter political barriers or non-tariff economy of several countries. Sustainable development policies have a role to overcome these obstacles. The research problem is how to build policies through the performance based risk assessment for sustainable palm oil supply chain in Indonesia. The research objective is to recommend policies that supported by performance-based risk assessment models for sustainable palm oil supply chain in Indonesia. Performance-based risk assessment algorithms have been developed and verified in a comprehensive manner. Model verification is conducted by analyzing the performance of crude palm oil supply chain based on expert’s analysis. This study has obtained the necessary indicators to assess the risk based on performance of sustainable crude palm oil supply chain. Model application has shown that risk level of sustainable crude palm oil in Indonesia relating to economics, environmental, and social aspects are moderate, respectively. However, there are some indicators that need to be considered with the level of risk is quite high, namely demand rate, quality of palm oil, timelines of product delivery, availability of crude palm oil and bullwhip effect. This paper has recommended some policies to address those risks.

Subject / Keyword(s) :
Supply chain, palm oil, risk, performance, sustainable. 

Risk-Based Performance Prediction Model for Sustainable Palm Oil Supply Chain

Rika Ampuh Hadiguna

The International Conference on Sustainable Business Competitiveness in Indonesian Agribusiness, 25-26 Juni 2012 di IPB International Convention Center (IICC), Bogor, Indonesia. Konferensi ini dilaksanakaan oleh Bogor Agricultural University (IPB), Maastricht School of Management – Netherland (MSM), Roundtable Indonesia Project (RTI) dan Center for Sustainable Business Competitiveness- IPB (CSBC).

The substance of study is how to forecast performance with considering the risk level of material flow and information flow in the palm oil supply chain. The purpose of this study is to develop a prediction model of the performance of sustainable palm oil supply chain by considering the risk level. Prediction model that designed is a model with capability to predict the level of achievement in the future. This study has successfully developed a risk based performance prediction model of sustainable palm oil supply chain. Application of non-numeric method proved quite effective in providing performance predictions. The developed model was verified by applying the model to predict the performance of Indonesia palm oil supply chain. Result of predictions model has also been validated by comparing predicted results with the current situation. This was show that the model is valid. Performance prediction of Indonesia palm oil supply chain in the next year is poor. Performance prediction of each aspect is ordinary. Performance prediction of each indicator in general is ordinary except demand, quality of finished product, timeline of delivery and inventory is very good. In addition, applications of proposed model also need to be tested more widely.

Keywords: performance, risk, prediction, sustainable, palm oil, supply chain

Decision Support System of performance assessment for sustainable supply chain management

Rika Ampuh Hadiguna

International Journal of Green Computing, 2012 (Accepted)

Sustainable supply chain management (s-SCM) requires a practice tool to assess performance that able to measure, evaluate and improve the existing operations of supply chain. The research question is how to build decision support system (DSS) for performance assessment of s-SCM. We have designed a DSS for performance assessment of s-SCM. There are some elements in designed DSS namely existing achievement, standards, indicators achievement and priority, computation algorithm, and recommendation for improvement. Theoretical contribution of this study is development of relationship between total and partial performance in mathematical formulation. The model that has been presented is still using generic indicators. If the particular company would like to apply model that additional indicators should change the encoding computer program. However, the modification is very easy to perform. DSS structure of this study is still able to accommodate any kind of particular requirement.  

Keywords:    decision support, performance, sustainable, supply chain.