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All Journal agriTECH Gontor AGROTECH Science Journal Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement)
Wildan Fajar Bachtiar
Agroindustry Study Program, Department Of Bioresources Technology And Veterinary , Vocational College Universitas Gadjah Mada, Jl. Yacaranda Sekip II Bulaksumur 55281, Email: Wildan_fajar@ugm.ac.id*
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Education

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Dynamic Modeling of the Drying Process of Corn Grains using Neural Networks Galih Kusuma Aji; Wildan Fajar Bachtiar; Henry Yuliando; Endy Suwondo
agriTECH Vol 39, No 3 (2019)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (107.588 KB) | DOI: 10.22146/agritech.44483

Abstract

This study examines the model development of the drying process of corn grains as a dynamic system. The appropriate use of a dynamic model for the drying process of corn grains could lead to an effective method for optimizing the system. The optimal control strategy can be determined by predicting the future behaviors of the process using a dynamic model. In this work, the dynamic characteristic of the water loss of corn grains during dynamics treatment of temperature in the drying process was measured in a continuous manner using a precise load cell. The nonlinear autoregressive with external input (NARX) neural network is used to identify and develop a model of dynamic characteristics of the drying process of corn grains. Then for model training and validation, the dynamic responses of the rate of water loss of corn grains to drying temperature were used. A three-layered NARX neural network model consists of 1-10-1 number neurons of each layer with two times delay was successfully developed to identify and make a model such a complex system. The developed model showed the accuracy of the rate water loss of corn grains during the drying process with the mean square error (MSE), and coefficient of determination (R-squared) values are 1.88892 x 10-4 and 0.891594 consecutively.
Studi Kesiapan Konsep Personal Higiene pada Masyarakat Menuju Desa Wisata Edukasi Kulinologi Muhammad Prasetya Kurniawan; Novita Erma Kristanti; Mohammad Wahyudin; Wildan Fajar Bachtiar; Annisa Dwi Astari
Jurnal Pengabdian kepada Masyarakat (Indonesian Journal of Community Engagement) Vol 4, No 2 (2019): Maret
Publisher : Direktorat Pengabdian kepada Masyarakat Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (685.632 KB) | DOI: 10.22146/jpkm.30099

Abstract

ABSTRACT             The identification of the community's readiness to develop their capability from farming to culinary to support food security needs understanding and awareness about personal hygiene. Observations, interviews, and questionnaires were used to determine 100 respondents from 8 sub villages in Banyusoco, Playen, Gunungkidul. The level of knowledge, understanding, and awareness of self-hygiene is explored from the implementation of socialization, the impact of dissemination and training activities, the frequency of hand washing before handling food, the frequency of handwashing with soap or disinfectant after using the toilet, at the dining area, and time for at least 20 seconds use of soap. Readiness analysis is also reviewed from the level of education. The results of identification show that daily habits that affect consciousness are needed. However, further research and dissemination are needed to explain the differences between behavioral reports, abilities, and awareness.Keywords: dissemination, practice, knowledge, consciousness, personal hygiene
Value Chain Performance of Cocoa Beans in Banjaroya, Kulon Progo Wildan Fajar Bachtiar; Galih Kusuma Aji; Diklusari Isnarosi Norsita
Gontor AGROTECH Science Journal Vol 5, No 1 (2019): June 2019
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v5i1.2811

Abstract

Kulon Progo is the area with the largest cultivation area for cocoa commodity in Special Region of Yogyakarta, which is 3,522 Ha [Goverment Database Statistics, 2013]. This study was conducted to analyze the performance of the value chain of cocoa beans. The data used in this study was the primary data obtained depth interviews with respondents from; farmers, farmer groups, cooperatives, companies and consumers. The method used to analyze in this study was the economic value added method. From the result, the highest revenue was found in the sales of the fermented dry cocoa seeds which was about 15.47; this showed that it is necessary for the farmers to apply the fermentation process to their cocoa products in order to boost their value and get bigger revenue. But the problem was the farmers need more time for the fermentation process as well as spending more money in buying fermentation box which are needed for the fermentation process. The sales of wet or non-fermented dry cacao seeds actually have low R/C value but farmers just do not want to bother themselves with the fermentation process so they end up in selling their products in wet or non-fermented dry state. Meanwhile, the process of making chocolate bar product has not given much value yet; eventhough this process should be able to give more value, considering the price for every kg of chocolate bar is around 65,000 Rupiahs. In this case, the cost for the cacao processing machine became the depression burden which cannot be covered by the amount of the cacao products produced by farmers. The solution for this problem can be done by conducting a collective purchase through Koperasi level; by doing this the farmers can enlarge their production scale which will end up in increasing their products' R/C value 
Co-Authors Annisa Dwi Astari Diklusari Isnarosi Norsita Endy Suwondo Galih Kusuma Aji Galih Kusuma Aji Henry Yuliando Mohammad Wahyudin Muhammad Prasetya Kurniawan Novita Erma Kristanti