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All Journal J@TI (TEKNIK INDUSTRI) Jurnal Optimasi Sistem Industri Industria: Jurnal Teknologi dan Manajemen Agroindustri PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Tibuana : Journal of Applied Industrial Engineering JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Journal of Applied Engineering and Technological Science (JAETS) Peka: Jurnal Pengabdian Kepada Masyarakat Jurnal Abdimas Musi Charitas JAPI: Jurnal Akses Pengabdian Indonesia Jurnal Pengabdian Masyarakat dan Inovasi Teknologi Jurnal Sains dan Aplikasi Keilmuan Teknik Industri Jurnal Pengabdian Masyarakat dan aplikasi Teknologi Jurnal Mitra Teknik Industri Widya Teknik
Dian Trihastuti
Universitas Katolik Widya Mandala Surabaya
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Perancangan Website untuk Menangani Keluhan Pelanggan di Industri Sepeda: Analisis Gap Menggunakan WebQual dan IPA Wardani, Tania Eka; Mulyana, Ig. Jaka; Trihastuti, Dian
Jurnal Sains dan Aplikasi Keilmuan Teknik Industri (SAKTI) Vol. 4 No. 2 (2024): December 2024
Publisher : Teknik Industri Universitas Ma Chung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33479/sakti.v4i2.51

Abstract

Salah satu sektor yang memengaruhi perekonomian Indonesia adalah industri manufaktur, termasuk industri sepeda. PT Insera Sena, sebagai produsen sepeda, menghadapi tantangan dalam menangani data penjualan dan keluhan pelanggan yang tersebar dalam file terpisah, sehingga menyulitkan analisis komparatif. Untuk mengatasi hal ini, studi ini merancang sebuah website berbasis metode WebQual yang menganalisis kualitas situs melalui empat dimensi: usability, information quality, service interaction quality, dan overall impression. Data diperoleh melalui survei kuesioner kepada divisi International Business menggunakan skala harapan dan persepsi. Analisis dilakukan menggunakan Gap Analysis dan Importance Performance Analysis (IPA) untuk mengidentifikasi atribut yang perlu diperbaiki. Hasil menunjukkan bahwa dimensi usability memiliki gap sebesar -0,47 dan overall dimension sebesar -0,99, menunjukkan masih terdapat ketidaksesuaian antara harapan dan persepsi pengguna. Atribut yang menjadi prioritas perbaikan adalah Q1, Q2, Q3, Q4, dan Q23, yang berhubungan dengan kemudahan penggunaan dan tampilan situs. Studi ini memberikan panduan bagi perusahaan untuk meningkatkan kualitas website dan kepuasan pelanggan secara efektif.
Sosialisasi dan Pelatihan Pangan Organik Bagi Masyarakat Desa Sambirejo, Kecamatan Pare, Kabupaten Kediri, Jawa Timur Mulyana, Ig. Jaka; Permata Sari Hartanti, Lusia; Trihastuti, Dian; Gunawan, Ivan
JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Vol 5, No 2 (2021)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jpp-iptek.2021.v5i2.1886

Abstract

Penerapan berbagai teknologi dalam upaya peningkatan mutu intensifikasi pertanian secara umum fokus pada penggunaan benih unggul yang bermutu. Namun, penggunaan benih unggul bermutu menuntut penggunaan pupuk kimia sehingga menjadikan petani tergantung pada pupuk kimia. Hal ini bertentangan dengan konsep pertanian organik yang menekankan penerapan praktik-praktik manajemen yang lebih mengutamakan penggunaan input dari limbah kegiatan budidaya di lahan, serta mempertimbangkan daya adaptasi terhadap kondisi setempat. Sejalan dengan program pemerintah GO ORGANIK 2010 untuk memberdayakan petani organik, Gubug Lazaris termotivasi untuk memberdayakan masyarakat sekitar melalui kegiatan sosialisasi dan pelatihan di bidang pertanian organik. Survei awal dilakukan untuk identifikasi kebutuhan dan permasalahan yang dihadapi oleh masyarakat. Hasil survei ini digunakan untuk mempersiapkan dan menyusun materi sosialisasi dan pelatihan. Pelaksanaan sosialisasi dan pelatihan dihadiri oleh 50 peserta yang sebagian besar merupakan warga desa Sambirejo. Pada akhir kegiatan dilakukan penyebaran senerai untuk mengetahui respon dari peserta. Hasil senerai menunjukkan bahwa 57,5% peserta sangat tertarik mengonsumsi pangan organik dan 42,5% peserta tertarik menanam tanaman organik. Dari diskusi selama kegiatan diperoleh informasi bahwa tantangan pertanian organik ini terutama penyadaran masyarakat akan pentingnya hidup sehat dan kelestarian lingkungan. Tantangan yang lain adalah harga pangan organik yang relatif lebih mahal.
PENERAPAN METODE FUZZY DALAM PENENTUAN PRIORITAS PENGURANGAN PEMBOROSAN (WASTE) DENGAN PENDEKATAN LEAN DI UNIT RAWAT JALAN SUATU RUMAH SAKIT Rumayar, Christania Putri; Mulyana, Ig. Jaka; Trihastuti, Dian; Kosasih, Wilson
Jurnal Mitra Teknik Industri Vol. 4 No. 1 (2025): Jurnal Mitra Teknik Industri
Publisher : Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jmti.v4i1.34401

Abstract

Hospitals are health facilities that provide medical services and care for patients. Every hospital is always required to maintain and quality of service in order to achieve customer satisfaction and improve efficiency. Lean Management can be used as an approach to improve service quality and efficiency. The first step of improvement is to identify waste in the hospital. This article aims to discuss identification of waste in the outpatient unit of a hospital. Furthermore, determine the priority of waste that must be reduced (eliminated). The methods used are observation, interview and fuzzy. The results showed that the waste that is prioritized to be reduced (eliminated) are patients waiting for the next process (W2), the process of supplying repetitive drugs (OVP2), and patients waiting for registration (W1). The results of this study can be used by hospital management as a reference for making improvements, both in the outpatient unit and other service units.
Selecting Shoes Box Suppliers using DEMATEL-ANP-WZOGP Approach: Seleksi Pemasok Kemasan Sepatu dengan Pendekatan DEMATEL-ANP-WZOGP Gunawan, Ivan; Trihastuti, Dian; Sianto, Martinus Edy; Godelva, Ivena
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol. 6 No. 2 (2022): Desember
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v6i2.1574

Abstract

Supplier selection is an important stage in the procurement of goods and services. The suitable suppliers will streamline the company's business processes to increase profits for the company. Product packaging is one of the vital components of the overall representation of a product. Many industries leave packaging matters to others to focus on their area of specialization. Thus, the selection of packaging suppliers has become one of the critical issues in the industrial world. This study aims to develop a packaging supplier selection model in the shoe industry. The primary packaging for shoes is a shoe box made of cardboard. In developing the packaging supplier selection model, it is necessary to determine the relevant criteria and sub-criteria to support the entire supplier selection process. The integration of the Decision-Making Laboratory and Evaluation Laboratory (DEMATEL), Analytic Network Process (ANP), and Weighted Zero-One Goal Programming (WZOGP) were used in this study to produce a suitable supplier selection model. In the initial step, five criteria and 12 sub-criteria were determined from the literature study and brainstorming with the procurement department. Furthermore, the DEMATEL method supports the development of a model of the relationship between criteria, sub-criteria, and alternatives required in the ANP procedure. Then, the ANP method synergistically assigns weights to each criterion, sub-criteria, and alternative. The weights from the results of the ANP method are used as parameters for the WZOGP optimization model. In this study, quality (28.1%) was ranked as the highest criterion, and shoe box prints that matched the specifications (12.3%) became the sub-criteria with the highest ranking. The selection of the best suppliers using the ANP method sequentially is supplier B (62.22%), supplier A (20.41%), and supplier C (17.38%). The results of the WZOGP optimization model confirm the results of the ANP by setting supplier B as the leading supplier
SOSIALISASI DAN PELATIHAN PANGAN ORGANIK BAGI MASYARAKAT UMAT PAROKI SANTO YOSEF KEDIRI KEUSKUPAN SURABAYA Trihastuti, Dian; Jaka Mulyana, Ignasius; Gunawan, Ivan; Permata Sari Hartanti, Lusia
Jurnal Abdimas Musi Charitas Vol. 6 No. 2 (2022): Jurnal Abdimas Musi Charitas Volume 6, Nomor 2, Desember 2022
Publisher : Universitas katolik Musi Charitas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32524/jamc.v6i2.550

Abstract

Organic food is the product of organic farming. Organic farming is an agricultural cultivation technique that uses natural (local) materials that emphasizes the protection of biotic and abiotic properties in the environment. The organic farming methods apply the principle of zero chemical synthetic, that is, without the use of artificial chemicals such as fertilizers and pesticides. The organic farming aims to provide food and agricultural products that are safe for public health and do not damage the environment. The challenges faced in developing organic agriculture are low productivity, distribution of production results, the number and expertise of human labor, the presence of plant-disturbing organisms, and the lack of public understanding of organic food. This Community Service aims to increase understanding and awareness of the importance of organic farming. In addition, the material also includes the supply chain of organic foods. The evaluation survey shows that 43% participant agree that the program is useful to increase their understanding about organic farming. The average participant satisfaction toward the program execution is 3,4 out of 4 scale. The participants are Orang Muda Katolik (OMK) from Paroki St. Vincentius A Paulo Kediri, St. Yosef Kediri and St. Markus Pare Keuskupan Surabaya.
Integration of Rough Cut Capacity Planning (RCCP) and Capacity Constraint Resources (CCR) to Minimize the Risk of Uncertainty in Fulfilling Production Material Supply Salsavira, Nardha Livia; Yuliawati, Evi; Rahmawati, Nur; Trihastuti, Dian
Widya Teknik Vol. 22 No. 2 (2023): November
Publisher : Fakultas Teknik, Universitas Katolik Widya Mandala Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33508/wt.v22i2.4959

Abstract

Managing the production capability of a company is undoubtedly the main concentration in the manufacturing industry. Industries must consider the materials and resources supplied for making a master production schedule. The lack of material supply from a supplier results in the inefficiency of the production process. The supply disruption of raw materials results in problems for the rest of the stages in the production process. As a result, companies experience difficulties in meeting the predetermined target. This research used an integration of RCCP and CCR to solve the problem. Optimization of CCR implies the TOC (theory of constraint) principle by reducing the percentage of overload until reaching a balanced (optimal) condition. This research aims to balance and optimize the ongoing production process. It took place in a manufacturing company that produces building materials serving the market in Indonesia. The results show that during the observation period, the current production system has experienced system overload for about 70% of the production period. The results of the RCCP analysis provide recommendations for improving the master production schedule to increase the effectiveness of the production system.
A Hybrid Simulation Study to Determine an Optimal Maintenance Strategy Ig. Jaka; Gunawan, Ivan; Angelia, Yunia Vera; Trihastuti, Dian
Jurnal Optimasi Sistem Industri Vol. 19 No. 2 (2020): Published in October 2020
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v19.n2.p91-100.2020

Abstract

With the increasing complexity of the process industry, having excellent maintenance management is essential for manufacturing industries. Various parts that interact and interdependent with each other make a well-planned maintenance strategy is one of the major challenges facing by industry. The whole system could be interrupted just simply because of the failure of a component. Therefore, a review of a maintenance strategy must be done from a system perspective. It is suggested that the optimal preventive maintenance time interval is not only determined by the lowest maintenance cost of each machine but also its impact on the whole system. Two main indicators that can accommodate the system perspective are reliability and revenue. A large number of machines and the array of machines can be synthesized in the reliability indicator. Moreover, the creation of maximum revenue is always the main goal for a business. The best maintenance strategy will be determined from the revenue obtained by a process industry. The process industry discussed in this study is a flour mill which is very well known in Surabaya. This study applied a hybrid simulation to solve this problem. Monte Carlo simulation was used to observe the machine individually and the results are reviewed using the application of System Dynamics. Three improvement scenarios were proposed in this simulation study. Scenario 2 was chosen as the best scenario because it was able to generate the highest revenue at the end of the period. Scenario 2 recommends setting the preventive maintenance time interval considering resource availability.
Co-Authors Aldri Frinaldi Angelia, Yunia Vera Clora Widya Brilliana Dian Retno Sari Dewi Dwi Agustin Nuriani Sirodj Evi Yuliawati Evi Yuliawati Godelva, Ivena Gunadhi, Albert Hadi Santosa Hadi Santoso Herwinarso . Ig. Jaka Ig. Jaka Mulyana Ivan Gunawan Ivan Gunawan Jaka Mulyana, Ignasius Julius Mulyono Khangara, Stephanie Gracia Lestariningsih, Diana Lusia Permata Sari Hartanti Martinus Edy Sianto Muchammad Aldiansyah Nicole Levina Celestina Nur Rahmawati Nur Rahmawati Permata Sari Hartanti, Lusia Rumayar, Christania Putri Salsavira, Nardha Livia Sianto, Martinus Edy Wardani, Tania Eka Wilson Kosasih Yehezkiel Prakoso Putra Yunen Yuliati - Yunia Vera Angelia