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KARAKTERISTIK ERGONOMIS RANCANG BANGUN WHEELBARROW Monasari, Mia; Hadiguna, Rika Ampuh
Jurnal Teknik Industri Vol 8, No 1 (2006): JUNE 2006
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (242.869 KB) | DOI: 10.9744/jti.8.1.pp. 82-96

Abstract

A Wheelbarrow is one of manual material handling equipments%2C which often used by many people. From survey%2C there are some problems faced by users%2C e.g.%2C high energy expenditure and risk of injuries. To avoid those particular risks in using a wheelbarrow%2C analysis of factors that affect this energy expenditure and risk of injuries will be needed. An experiment based on Taguchi method has been conducted to achieve the optimum combination of factors that increase energy expenditure rate and decrease the energy expenditure variance. The analysis of body posture shows that the best posture in using a wheelbarrow is when the straight arm in line with vertebrae. The analysis of subjective complaints shos that palm of hands%2C arms%2C shoulders%2C elbows and wrists are the most possible parts of body having risk injuries. Based on these information and analysis%2C a good wheelbarrow is a wheelbarrow that has the distance of man support and wheel axis smaller than 110 cm. The propose design of a new wheelbarrow has these following properties. The horizontal distance beetween weight point an wheel axis is smaller than 26.53 cm%2C the vertical distance beetween weight point and wheel axis is smaller than 32.37 cm and the weight point is stabil at (-13.22 cm ; 14.37 cm) based on the reference point. Moreover%2C it has a feature than can decrease wheelbarrow speed in descend way and decrease the effect of vibrations as well%2C the net weight is smaller than 21%2C6 kg and the support of wheelbarrow is lower than 32.5 cm. Abstract in Bahasa Indonesia : Wheelbarrow merupakan salah satu alat manual material handling yang banyak digunakan masyarakat. Oleh karena itu perlu dilakukan penentuan karakterisik wheelbarrow yang baik yang telah memper¬timbangkan faktor yang paling mempengaruhi konsumsi energi dan kemungkinan cedera untuk mengetahui prioritas perbaikan. Eksperimen dilakukan dengan menggunakan metode Taguchi. Dari analisis posisi tubuh diketahui bahwa posisi tubuh paling baik saat pengangkatan adalah posisi tubuh lurus dengan lengan sejajar tulang belakang. Berdasarkan kuesioner diketahui bahwa keluhan terbanyak responden adalah pada telapak tangan%2C lengan%2C bahu%2C siku dan pergelangan tangan. Berdasarkan informasi-informasi tersebut maka dapat disimpulkan bahwa wheelbarrow yang baik adalah wheelbarrow mempunyai jarak antara tumpuan manusia dengan poros roda yang lebih panjang dari 110 cm%2C mempunyai jarak horizontal titik berat beban terhadap poros yang lebih kecil dari 26%2C53 cm%2C mempunyai jarak vertikal titik berat beban terhadap poros yang lebih kecil dari 32%2C37 cm%2C mempunyai titik berat beban yang stabil (tetap pada (-13%2C22 cm ; 14%2C37 cm) terhadap titik acuan)%2C mempunyai fitur yang dapat mengurangi kecepatan wheelbarrow di jalan menurun%2C mempunyai fitur yang dapat meredam getaran%2C mempunyai berat bersih wheelbarrow yang lebih ringan dari 21%2C6 kg%2C mempunyai tinggi kaki penyangga yang lebih rendah dari 32%2C5 cm. wheelbarrow%2C energy expenditure%2C risk of injuries%2C taguchi methods.
A MULTI CRITERIA APPROACH TO DESIGNING THE CELLULAR MANUFACTURING SYSTEM Hadiguna, Rika Ampuh
Jurnal Teknik Industri Vol 7, No 1 (2005): JUNE 2005
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (188.473 KB) | DOI: 10.9744/jti.7.1.pp. 41-50

Abstract

Cellular manufacturing system design problems such as design framework, manufacturing cells layout and layout evaluation. The research objective is developing the framework to designing manufacturing cells with considering the organization and management aspects in shopfloor. In this research have compared the existing layout with proposed layout which applied the multi criteria approach. The proposed method is combining Analytical Hierarchy Process (AHP), Clustering and heuristic approach. The result has show that grouping with Single Linkage Clustering (SLC) to be selected as manufacturing cells. The comparison of clustering weight is 0,567, 0,245 and 0,188 for SLC, Complete Linkage Clustering (CLC) and Average Linkage Clustering (ALC), respectively. This result shows that generating layout by using grouping result from SLC. The evaluation result shows that types of manufacturing cells better than process layout which used the existing system.
MODEL PERSEDIAAN MINYAK SAWIT KASAR DI TANGKI TIMBUN PELABUHAN Hadiguna, Rika Ampuh
Jurnal Teknik Industri Vol 11, No 2 (2009): DECEMBER 2009
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (173.02 KB) | DOI: 10.9744/jti.11.2.PP. 111 – 121

Abstract

In this paper, we consider fuzzy inventory of crude palm oil. First, we determined the demand and imperfect product quality as triangular fuzzy numbers to obtain the fuzzy inventory total cost. Secondly, using the signed distance method to defuzzify, we get the estimate of the total cost in the fuzzy sense. Moreover, we also developed the economic production quantity (EPQ) as the initial formulation. The result of study can be stated as follows: if the level of demand risk is increased then the order will also be increased, while if the level of quality risk is increased then the order will be decreased. Additionally, the quality risk factor model is successfully applied in the inventory control of crude palm in harbor storage. Abstract in Bahasa Indonesia: Makalah ini menjelaskan sebuah model persediaan minyak sawit kasar menggunakan logika fuzzy. Langkah awal yang dilakukan adalah menetapkan bentuk fuzzy pada permintaan dan produk dengan mutu kurang baik sebagai bilangan fuzzy segitiga ke dalam total biaya persediaan. Teknik defuzzifikasi yang digunakan adalah signed distance sehingga total biaya persediaan dapat diperoleh. Studi ini mengembangkan economic production quantity (EPQ) sebagai formulasi dasar. Hasil studi adalah peningkatan kadar risiko permintaan akan meningkatkan ukuran pemesanan sedangkan peningkatan kadar risiko mutu akan menurunkan ukuran pemesanan. Penambahan faktor risiko mutu pada model EPQ telah berhasil diterapkan dalam pengendalian persediaan minyak sawit kasar di tangki timbun pelabuhan. Kata kunci: persediaan, minyak sawit kasar, fuzzy, risiko mutu, signed distance.
ALOKASI PASOKAN BERDASARKAN PRODUK UNGGULAN UNTUK RANTAI PASOK SAYURAN SEGAR Marimin, Marimin; Hadiguna, Rika Ampuh
Jurnal Teknik Industri Vol 9, No 2 (2007): DECEMBER 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (374.856 KB) | DOI: 10.9744/jti.9.2.pp. 85-101

Abstract

Application of artificial inteligent by using fuzzy logic can be one of way to handle supply chain situation in uncertainty environment. It was widely concern to study a supply chain using fuzzy logic that most needed. Ain of the study was apply fuzzy logic in determination of supply allocation for superior product in vegetables supply chain. Models was developed in three sub models. First was determination vegetables types that superior by using pareto technique and exponential compaarison method (MPE). Second was expert system to determine supply needed and finally was optimizing supply allocation using fuzzy multi-objective linear programming. The model was applied in a vegetables agroindustry that superior product selected was red paprica. Analysis againts model behaviour is conducted for pesimistic and optimistic scenarios. Abstract in Bahasa Indonesia : Penerapan kecerdasan buatan dengan logika fuzzy bisa menjadi salah satu cara untuk mengatasi situasi rantai pasok dalam lingkungan ketidakpastian. Perhatian yang lebih luas untuk pembahasan rantai pasok menggunakan teknik fuzzy masih sangat dibutuhkan. Studi ini bertujuan menerapkan logika fuzzy dalam penentuan alokasi pasokan untuk produk unggulan pada rantai pasok agroindustri sayuran. Model yang terdiri dari tiga sub model. Sub model pertama adalah penentuan jenis sayuran yang diunggulkan menggunakan kombinasi teknik pareto dan metode perbandingan eksponensial (MPE). Sub model kedua adalah sistem pakar untuk menentukan kebutuhan pasokan menggunakan logika fuzzy. Sub model ketiga adalah optimasi alokasi pasokan menggunakan programa linear obyektif majemuk fuzzy. Model yang dibangun kemudian diterapkan pada sebuah perusahaan agroindustri sayuran dengan produk unggulan terpilih adalah paprika merah. Analisis terhadap prilaku model juga dilakukan untuk skenario pesimis dan optimis. Kata kunci: fuzzy, sistem pakar, MPE, obyektif majemuk, sayuran
Simulasi Sistim Logistik Bantuan Bencana Gempa–Tsunami: Studi Kasus di Kota Padang Hadiguna, Rika Ampuh; Wibowo, Agus
Jurnal Teknik Industri Vol 13, No 2 (2012): Agustus
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (430.375 KB) | DOI: 10.22219/JTIUMM.Vol13.No2.116-125

Abstract

RIKA AMPUH HADIGUNA(1), DAN AGUS WIBOWO(2)The problem of disaster logistics determines budget allocation and distribution of relief to the refugees. The purpose of this research develop a simulation model to analyze the effectiveness of disaster logistics in emergency phase after the occurred disaster in term of earthquake and tsunami. The model is built based on the real situation when the earthquake has been occureed in Kota Padang. Simulation analysis is also intended to measure the effectiveness of disaster logistics caused by earthquake on 30 September 2009 in Padang City. Model represents the best practices of disaster logistics management that focuses on the distribution of aid and the consequences caused by the disaster. Various scenarios have been formulated in this study and analyzed using a simulation model that has been built. There are two situations outlined in this simulation namely the earthquake stand alone and tsunami. The conclusion that logistics effectiveness of relief is determined by the budget allocation and distribution of goods as compared with the level of damage caused by the disaster.
MODEL PERENCANAAN PRODUKSI PADA RANTAI PASOK CRUDE PALM OIL DENGAN MEMPERTIMBANGKAN PREFERENSI PENGAMBIL KEPUTUSAN Hadiguna, Rika Ampuh; Machfud, Machfud
Jurnal Teknik Industri Vol 10, No 1 (2008): JUNE 2008
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/jti.10.1.pp. 38-49

Abstract

A model of production planning in Crude Palm Oil industry is discussed on this paper. An interactive model is made due to the involvement of decision maker’s preference in production planning. The model is built for Nucleus-Plasma palm estate system. The sources of fresh palm fruit bunches are obtained from nucleus estate, plasma estate and outsourcing. A single objective fuzzy linear programming model is built with the following steps: (1) Decision variables, parameters are identified from the real system of Crude Palm Oil industry as well as determination of constraints and objective function; (2) Fuzzy parameters are determined using modified S curve membership function. Linear programming model is also formulated at this step. Risk quality of raw material is represented by percentage of defect raw material; (3) Model is then validated using data from Nucleus-Plasma palm estate system. The result shows that S curve membership function is able to represent the preference of decision makers. Abstract in Bahasa Indonesia: Tulisan ini membahas sebuah model perencanaan produksi dalam kerangka rantai pasok agroindustri crude palm oil (minyak sawit mentah). Model dibuat interaktif karena melibatkan preferensi pengambil keputusan dalam perencanaan produksi. Model dibangun pada lingkup perkebunan yang menggunakan sistem Perkebunan Inti Rakyat (PIR). Sumber pasokan tandan buah segar berasal dari kebun inti, kebun petani plasma, dan kebun luar. Konsep pemodelan yang diterapkan adalah programa linear fuzzy dengan obyektif tunggal. Model dikembangkan dalam beberapa tahapan. Pertama, mengidentifikasi variabel, parameter, kendala dan fungsi obyektif. Kedua, menetapkan parameter fuzzy dengan fungsi keanggotaan berbentuk kurva S dimodifikasi. Pada tahap ini dilakukan formulasi model dalam bentuk programa linear. Resiko kualitas yang berasal dari bahan baku direpresentasikan dalam bentuk persen jumlah cacat. Ketiga, melakukan pengujian model menggunakan data yang diadopsi dari sebuah perusahaan perkebunan yang mempunyai sistem PIR. Hasil yang diperoleh menunjukkan bahwa model mempunyai kemampuan untuk mengakomodir preferensi pengambil keputusan. Kata kunci: rantai pasok, agroindustri, programa linear, fuzzy, kualitas, preferensi.
Penentuan Prioritas Risiko pada Rancangan Rantai Pasok Biodiesel dari Minyak Goreng Bekas di Kota Padang Ruri Kurnia; Rika Ampuh Hadiguna
Jurnal Rekayasa Sistem Industri Vol. 5 No. 1 (2016): Jurnal Rekayasa Sistem Industri
Publisher : Universitas Katolik Parahyangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (275.152 KB) | DOI: 10.26593/jrsi.v5i1.1909.15-25

Abstract

A design of biodiesel supply chain from waste cooking oil conducted in previous studies. Implementation of supply chain design needs to be studied more in depth and comprehensive. One aspect of the study is a supply chain risk management. Supply chain risk management is important because many events in supply chain which raises operational problems and the cessation of business activity. Because of vulnerability of the supply chain to various internal and external risks, the study of risk sources is needed. This study examines the sources of risk and the weighting that may occur along the supply chain for the distribution of biodiesel from waste cooking oil from suppliers that located in various places until the sale of biodiesel to consumers that are targeted to the public in Padang. The method used in this research is fuzzy AHP with triangular fuzzy number approach. Risk identification is done with the study of literature and assessment by experts. Based on the results obtained sequences risks from largest to smallest weight are raw materials, market, quality, production, transportation, and partnerships.
PENERAPAN ANALYTICAL HIERARCHY PROCESS (AHP) DALAM PENENTUAN DAERAH PROSPEKTIF UNTUK PENGEMBANGAN AGROINDUSTRI KELAPA Hermiza Mardesci; Santosa Santosa; Novizar Nazir; Rika Ampuh Hadiguna
Sistemasi: Jurnal Sistem Informasi Vol 8, No 2 (2019): Sistemasi: Jurnal Sistem Informasi
Publisher : Program Studi Sistem Informasi Fakultas Teknik dan Ilmu Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (278.567 KB) | DOI: 10.32520/stmsi.v8i2.503

Abstract

Pengembangan agroindustri kelapa di sentra daerah penghasil kelapa masih perlu ditingkatkan. Hal ini disebabkan karena masih banyaknya petani kelapa yang masih bertahan dengan tradisi lama, yaitu menjual kelapa bulat tanpa mengolahnya terlebih dahulu. Salah satu strategi pengembangan adalah dengan menentukan daerah potensial untuk pengembangan agroindustri tersebut. Penelitian ini bertujuan untuk menentukan daerah potensial atau daerah yang prospektif untuk pengembangan agroindustri kelapa. Kriteria yang digunakan adalah jumlah penduduk, luas areal, jumlah produksi, dan jumlah petani kelapa. Sedangkan alternatif adalah mencakup semua daerah penghasil kelapa. Lokasi penelitian dilakukan di kabupaten Indragiri Hilir, yang terdiri atas 20 daerah penghasil kelapa, yaitu Batang Tuaka, Concong, Enok, Gaung Anak serka, Gaung, Kateman, Kempas, Kemuning, Keritang, Kuala Indragiri, Mandah, Pelangiran, Pulau Burung, Reteh, Sungai Batang, Tanah Merah, Teluk Belengkong, Tembilahan, Tembilahan Hulu, dan Tempuling. Penentuan daerah prospektif menggunakan metode Analytical Hierarchy Process (AHP) dengan bantuan program Expert Choice. Hasil perhitungan menunjukkan bahwa daerah yang paling prospektif untuk pengembangan agroindustri kelapa di Indragiri Hilir adalah Kecamatan Mandah, dengan bobot 0.150.Hasil dari penelitian ini bisa digunakan sebagai pendukung keputusan dalam menentukan daerah untuk pengembangan agroindustri kelapa.
ANALISIS KEBIJAKAN PEMERINTAH TERHADAP HARGA REALISASI PENJUALAN TANDAN BUAH SEGAR (TBS) KELAPA SAWIT DI TINGKAT PETANI SWADAYA DI PROVINSI SUMATERA BARAT Lisa Nesti, Firwan Tan, Endrizal Ridwan, Rika Ampuh Hadiguna
Jurnal Teknologi Industri Pertanian Vol. 28 No. 3 (2018): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

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Abstract

Palm oil is the number one estate commodity and contributes the largest Gross Domestic Regional Bruto in West Sumatera Province. The current problem is the frequent occurance over-supply of fresh fruit bunches of palm oil owned by smallholders that exceed the demand from palm oil processing factories. The purpose of this research isto analyze the realization price of FFB sales at the collecting level, the realization of export sales prices of Crude Palm Oil (CPO), realization of kernel sales prices and government policies on the realization of FFB sales prices at smallholder and the Government policy in the future to increase the bargaining power of farmer of FFB in West Sumatra. Two data sources used are primary and secondary data. Primary data is obtained directly from independent smallholders and other stakeholders, the instruments that researchers use are direct interviews, questionnaires, field observations and focus group discussions. Secondary data used is time series data using the Error Correction Model (ECM) analysis method. The results show that the variable realization price of FFB sales at the Gatherer level, the realization price of export and local CPO sales, the realization of export and local kernel sales prices proved to have a significant effect on the price realization of FFB sales at independent farmers but government policies related to FFB pricing have not significantly affected prices sales realization at the level of independent smallholders. Through the process of monitoring and evaluation of policies that have been established before and determine the right strategy in the future, is one way that can be done by the government to improve the bargaining power  farmer of FFB in West Sumatra province.Keywords: error correction model, goverment regulation, palm oil, farmer
ANALISIS RANTAI PASOK CRUDE PALM OIL (CPO) DI KABUPATEN PASAMAN BARAT Lisa Nesti; Firwan Tan; Rika Ampuh Hadiguna
Agripita: Jurnal Agribisnis dan Pembangunan Pertanian Vol 1 No 1 (2017): JURNAL AGRIPITA
Publisher : Agribusiness Study Program Universitas Sriwijaya in Collaboration with Indonesian Society of Agricultural Economics (PERHEPI/ISAE)

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Abstract

which has a tendency to increase production from year to year. The purpose of this study is to get an overview of CPO supply chain in West Pasaman by reviewing all activities covering the flow of goods, information flow and cash flow that occurs in the supply chain. The results showed that in the flow of goods, there are three forms of the flow of supplies palm fruits to Agro Industries are distinguished by palm fruits of independent smallholders, farmers and palm fruits from the nucleus, while the flow of information includes feedback information received and given by each supply chain actors CPO include farmers, mill palm oil processing, expedition CPO, CPO mill and factory CPO refinery dan export while the cash flow coming from downstream (end consumer) to the upstream in the form of price realization of commodities purchase and sale agreement in the supply chain.
Co-Authors Acim Heri Iswanto Afri Adnan Afrinaldi, Feri Afrizal Afrizal Agus Sutanto Agus Wibowo Agus Wibowo Agus Wibowo Ahmad Syafruddin Ahmad Syafruddin Indrapriyatna Al Fajri Alexie Herryandie Alexie Herryandie B.A Alfadhlani Alizar Hasan Andrew Kurniawan Vadreas, Andrew Kurniawan Asmuliardi Muluk Astiena, Adila Kasni Aulia Rahman Berry Yuliandra Dea Honesti Dedet Deperiky Dedy Irfan Des Indri Prihantony Desto Jumeno Dicky Fatrias Difana Meilani Dina Rahmayanti Elita Amrina Eri Wirdianto Fadilla Azmi Farida Yani Febriza Imansuri Firwan Tan Ghani Arrasyid Zulkarnaen Gunarif Taib Gunarif Taib Hafizah Hanim Hanalde Andre Hardiansyah Hardiansyah Hardisman Hardisman Hariselmi Hariselmi Henmaidi Henmaidi Hilma Raimona Zadry Humala Napitupulu Ikhwan Arief Imelda Yunita Jonrinaldi Kamil, Insannul Kimberly Febrina Kodrat Lady Lisya Lailatul Syifa Tanjung Leffy Hermalena Leffy Hermalena Lisa Nesti Lusi Susanti Machfud Machfud Machfud Machfud Malikul Mulki Nasni Mardesci, Hermiza Marimin . Marimin Marimin Marisa, Julia Meilizar Meilizar Meilizar, Meilizar Melinda Noer Mia Monasari Mia Monasari Nadia Yefika Nilda Tri Putri Nofialdi, Nofialdi Novizar Nazir Ophiyandri, Taufika Pattasang Pattasang Prima Fithri Putri, Ratna Effiliani Rahma Zulqa RAHMAT SYAHNI Rahmi Ramadhany Rakha Satya Idsan Ranny Medola Putri Ratna Effiliani Putri reinny patrisina Ricky Akbar Ridha Luthvina Rima Semiarty Ruri Kurnia Ruri Kurnia, Ruri Sabda Alfath Sandra Melly Santosa Santosa Santosa Santosa Santosa Santosa Santosa Santosa Siregar, Rahmad Syukur Suci Oktri Viarani Sukaria Sinulingga Sukma Nirad, Dwi Welly Taufik Taufik Wahyudi Wahyudi Wahyudi Winny Zilkhalida Hadi Wisnel Wisnel