Paper Presentation on ISIEM 2013

I was attending the 6th International Seminar on Industrial Engineering and Management (ISIEM), Batam, Kepulauan Riau, Indonesia on February 12^th   - 1 4^th , 2013. The conference was hosted by Department of  Industrial Engineering  from 6 universities, and supported by Indonesian Association of Industrial Engineering Higher Education (BKSTI).  In this seminar, I presented a research paper focusing on production system improvement.

This seminar also invited several keynote speakers, and Prof. Frits Blessing from Rotterdam University was my fave one. He discussed a lot about his experiences on supply chain and logistic industries. He also took a concern on MP3I implementation in Indonesia. He told that Indonesian Government must be flexible in managing connectivity of goods and developing sufficient infrastructures. His explanation truly enlightened me about one of IEUI research concern on Port Management.

The seminar session was continued with parallel session during the second day. The closing ceremony of the seminar took place in Merlion Park, Singapore. What a great experience! Thanks to Industrial Engineering Universitas Indonesia for the chance!

Closing Ceremony at Merlion Park, Singapore
(Foto by: Industrial Engineering, Tarumanagara University)

See more the ISIEM Paper

SEMS Lab conducted a System Dynamics (SD) workshop on January 28th-30th, 2013. This workshops was an introduction to System Dynamics methodology for skill development of all the lab assistants. The materials consist of  conceptual thinking behind SD, stock and flow diagram development and case study presentation. In this workshop, some of research assistants – including me, took a part by being instructors and facilitators.

Detailed information can be reached at SEMS Lab website.

My paper itself, entitled “A System Dynamics Sustainability Model to Visualize the Interaction between Economic, Social, and Environment Aspects of Jakarta’s Urban Development“, was presented with my research partner, Ricki Muliadi. This research aimed to develop a base city level sustainability model to facilitate further research on urban sustainable development planning. We presented our paper in parallel session with Mr. Ir. Syarif Hidayat MengSc, MM. (head of Industrial Engineering Department, University of Al Azhar Indonesia) as a moderator.

The session took place in interactive and lively. The participants had a lot of feedback during the Q&A session. The discussion concluded by a short presentation on possible research directions on System Dynamics based on urban development framework.

Q&A Session with Mr. Syarif Hidayat as a Moderator

See more in our ISSTIN Paper – 2012

Kegiatan ini didukung dengan 2 orang dosen dan 19 trainer yang merupakan mahasiswa program magister Teknik Industri Universitas Indonesia. Kegiatan diawali dengan seminar kewirausahaan yang berlangsung dari pukul 08.00 – 11.30 WIB. Sesi berikutnya siswa akan kembali ke kelasnya masing-masing untuk mengikuti pelatihan menghadapi dunia kerja.

Siswa SMK Negeri 1 Depok di Kelas 12 Jurusan TKR

Saya bersama rekan kerja saya, Gagas Hariseto, mengisi pelatihan di kelas 12 jurusan Teknik Kendaraan Ringan. Dalam sesi tersebut, peserta sangat antusias dalam mengikuti kegiatan meskipun  suasana ruang kelas siang itu cukup terik. Selain penyajian materi, sesi ini juga diselingi dengan permainan simulasi yang bertujuan mengasah kreativitas peserta.

Suasana kelas yang hidup ini kemudian ditutup dengan sayembara pembuatan proposal bisnis. Para peserta membentuk kelompok yang beranggotakan lima orang dan setiap kelompok akan membuat proposal bisnis yang akan diperlombakan antar kelas. Aktivitas ini disambut positif oleh para siswa yang aktif mengajukan pertanyaan mengenai teknis perlombaan.

Sesi Foto Bersama di SMK Negeri 1 Depok

Sesi ini berakhir pada pukul 15.30 dan seluruh rangkaian kegiatan ISR di SMK Negeri 1 Depok ini ditutup dengan sesi foto bersama antara pihak sekolah dan para trainer.

The session started with a short discussion on one of his paper regarding the use of SD modeling in tackling human resource issues in a professional service firms (Kunc, M. Achieving a balanced organizational structure in professional services firms: some lessons from a modeling project. Systems Dynamics Review 24, 2008).

This discussion took place in interactive and lively. The research assistants (including me) got a new insight of the use of SD modeling in improving the organization’s performances. Question and answer session also enriched our understanding to become more solid. The discussion concluded by a short presentation on possible research directions on System Dynamics based on resource based strategic view.

Prof. Martin Kunc with SEMS lab members

The concept of ANOVA was born in the beginnings of agricultural era in 1918-1940. It was invented by Sir Ronald Aylmer Fisher while working at Rothamsted Agricultural Experiment Station, London, England. This method emerged because of variations, which represent inequality of a distribution of variations of certain states in a population.

There are many techniques and designs that can be used in analyzing variances. In this post, I’ll share about One-Way Analysis of Variance, the simplest version of ANOVA. A One-Way Analysis of Variance (One-Way ANOVA) is a way to test the equality of three or more means at one time by using variances. It is used for a single-factor between subjects design, i.e. for comparing two or more treatment means.

In One-Way ANOVA, we use F-test for comparing the treatment means. If the value of treatment mean is greater than the F value in certain level of confidence, we can conclude that the treatment means differ or significantly affect the response variable. The following attachment may be useful to help you in understanding the concept of One-Way ANOVA.

High-Performance Fuel Experiments

Pertamina is currently conducting a research for the formulation of an efficient and highly performance fuel. The response variable is revealed in km/hours, as top speed. The researchers wants to determine the best octane ratings (%) that produce the highest speed. They choose five levels of octane ratings that vary between 92-96% with 5 times radomized replication. The table of experiments is summarize as shown below,

Calculation of Variation

Total Source of Variation

SS_T      = (366)² + (365)² + (371)² + … + (367)² + (377)² –

= 504,56

Source of Variation : Treatment

SS_Treatment          =  {[(1842)² + (1857)² + (1868)² + (1879)² + (1848)²] / 5 } –- {[(9294)²]/25}

                           = 178,96

Source of Variation : Error

SS_E      =  SS_T - SS_Treatment 

=  577.468,70 – 577.125,10

=  325,60

ANOVA for the High-Performance Fuel

F_{0.1; 4; 20} = 2,25 < F₀ = 2,75      ……………………(Reject H₀)

Since the H₀ is rejected, it can be concluded that the octane ratings in the fuel significantly affect vehicle’s top speed.

This semester, I take eight courses. Those course are System Thinking, Quantitative Method, Industrial Statistics, Strategic Management, Engineering Economics, Process Design, Industrial Organization, Operation Management, and Internship. All of those courses are interesting but the most interesting one is System Thinking.

Systems thinking is a perspective that helps us see and understand the big picture in new ways. This concept, which was founded in 1956 by Jay Forrester (MIT Professor), help people to make their understanding about social systems and engineering principles explicit. Besides the lecture has a little concern about numeric calculation, this course allows me to improve the way of thinking and improves problem solving skill.

Thinking skill is very important for every Industrial Engineers to understand problem’s structure. This course improves my thinking skill by giving a better understanding and perspective to explain the systemic behaviors. Once, we see the relationship between structure and behavior, we can understand how systems work, what make them produce poor results, and how to shift them into better behavior patterns.

As our world change rapidly and become more complex, System Thinking will help us manage, adapt, and see the wide of range of choices we have before us. It it a way of thinking that gives us the freedom to identfy root causes of problems and see new opportunities. Lastly, we can easily apply this knowledge in our daily life. As our life faces many choices, it also becomes more complex.

Further reading : Thinking in Systems : A Primer by Donella H. Meadows.