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All Journal Jurnal Manajemen dan Organisasi ASEAN Journal of Systems Engineering Majalah Forum Teknik UGM Jurnal Teknoin TEKNIK Dentika Dental Journal SPEKTRUM INDUSTRI Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Teknosains OPSI Journal of Engineering and Management in Industrial System Sinergi Media Mesin: Majalah Teknik Mesin Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Jurnal Sistem dan Manajemen Industri Tekinfo | Scientific Journal of Industrial and Information Engineering Journal of Energy, Mechanical, Material and Manufacturing Engineering Indonesian Journal of Chemistry Conference SENATIK STT Adisutjipto Yogyakarta Jurnal Desain Idea: Jurnal Desain Produk Industri Institut Teknologi Sepuluh Nopember Surabaya RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi Jurnal Riset Teknologi Industri Dinamika Kerajinan dan Batik : MAJALAH ILMIAH IGKOJEI: Jurnal Pengabdian Masyarakat Jurnal Litbang Kota Pekalongan Destinesia : Jurnal Hospitaliti dan Pariwisata Makara Journal of Technology JURNAL TEKNIK INDUSTRI Innovative: Journal Of Social Science Research Applied Science and Technology Research Journal RADIAL: Jurnal Peradaban Sains, Rekayasa dan Teknologi Dinamika Kerajinan dan Batik: Majalah Ilmiah
Alva Edy Tontowi
Department Of Mechanical And Industrial Engineering, Universitas Gadjah Mada, Yogyakarta, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Veterinary Other

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A REVIEW: A MODEL of CULTURAL ASPECTS for SUSTAINABLE PRODUCT DESIGN Ihwan Ghazali; Salwa Hanim Abdul Rashid; Siti Zawiah Md Dawal; Alva Edy Tontowi; Hideki Aoyama
Spektrum Industri Vol. 10 No. 1: April 2012
Publisher : Universitas Ahmad Dahlan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v10i1.1619

Abstract

Product design stages are important to consider critically in production. Generally, product design that shall be created by designer, should consider what the customer wants and needs. Nowadays issues, product design does not only consider the “wants and needs” of user, but also how the design can be created by embedding sustainability aspects in the product. Culture is also one of the important aspects which need to be considered in product design as culture affects the way users respond to the product. This paper aims to develop a new model for design development, in which the aspects of culture are incorporated into sustainable product design. By reviewing the existing literature, the authors attempt to identify the gaps of the existing papers, which illustrate how culture affects sustainable product design. Recent papers have only shown that culture influences product design, but they do not explore sustainability and the culture aspects in product design. Due to these gaps, it is therefore important to create a model which will assist designers to elicit sustainable product design based on cultural aspects. In summary, designers need to reflect on the “wants and needs” of users. The framework presented in this paper can be integrated into designers’ and companies’ decision-making during product design development. Keywords: Model, Culture, Sustainable, Product design, Product Development.
Comparison of 3D Printing Technologies for Polymer-HA Bone Scaffolds: A Systematic Review Toward Hybrid Fabrication Strategies Kumarajati, Dhananjaya Yama Hudha; Herianto; Herliansyah, Muhammad Kusumawan; Kusmono; Tontowi, Alva Edy
APPLIED SCIENCE AND TECHNOLOGY REASERCH JOURNAL Vol. 4 No. 2 (2025): Applied Science and Technology Research Journal
Publisher : Lembaga Penelitian dan Pengabdian Mayarakat (LPPM) Universitas PGRI Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31316/astro.v4i2.8230

Abstract

Bone scaffold fabrication using 3D printing faces a fundamental dilemma: the trade-off between mechanical strength and biological functionality. To address this challenge, a systematic literature review (SLR) of 28 primary research articles was conducted to compare various hydroxyapatite-based scaffold fabrication technologies. The analysis confirms a clear trade-off: Fused Filament Fabrication (FFF) excels in mechanical strength, Digital Light Processing (DLP) in architectural precision (<100 µm), and Direct Ink Writing (DIW) in flexibility for bio-functionality, proving no single method is ideal. The main conclusion is that hybrid fabrication strategies—intelligently integrating the strengths of multiple technologies—offer the most promising approach to creating functional scaffolds with an optimal balance of strength and bioactivity for future clinical applications.
PENGEMBANGAN MESIN 3D PRINTING BANGUNAN UNTUK MATERIAL SISA RERUNTUHAN BANGUNAN Perttalolo, Andy Nurul Yunita; Rosid, Ibnu Abdul; Tontowi, Alva Edy
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 10 No. 1 (2022): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37971/radial.v10i1.226

Abstract

Abstrak: Pengembangan Mesin 3D Printing Bangunan Untuk Material Sisa Reruntuhan Bangunan. Material reruntuhan bangunan dapat dimanfaatkan sebagai bahan bangunan yang digunakan untuk proses rekonstruksi. Teknologi yang dapat digunakan untuk melakukan rekonstruksi bangunan adalah teknologi 3D Printer FDM. Pada penelitian ini dikembangkan material untuk teknologi 3D Printer FDM dengan memanfaatkan recycle material yang tersusun berupa semen, fly ash, clay, superplaticizer dan air yang disebut recycle concrete, serta dilakukan optimasi parameter mesin 3D Printer untuk mendapatkan kombinasi parameter dengan error dimensi yang minimal. Penelitian ini dikembangkan mesin 3D Printer untuk konstruksi bangunan. Metode optimasi parameter menggunakan Fractional Factorial Design dengan 3 parameter dalam 2 level yaitu berupa print speed (100 mm/s dan 120 mm/s), layer height (6 mm dan 9 mm) serta kecepatan putaran ekstruder (30 rpm dan 40 rpm). Hasil optimasi didapatkan layer height berpengaruh signifikan terhadap error dimensi tinggi dan interaksi print speed dan kecepatan putaran ekstruder berpengaruh signifikan terhadap error dimensi tinggi, untuk mendapatkan error dimensi terkecil didapatkan dengan kombinasi parameter print speed sebesar 100 mm/s, layer height sebesar 6 mm, dan kecepatan putaran ekstruder sebesar 30 rpm dengan hasil error dimensi diameter sebesar 0,0671 dan error dimensi tinggi sebesar 0,0256. Abstract: Building 3D Printing Machine Development for Building Ruins Residual Material. Building ruins materials can be used as building materials used for the reconstruction process. The technology that can be used to reconstruct buildings is FDM 3D Printer technology. In this study, materials for 3D Printer FDM technology were developed by utilizing recycle materials composed of cement, fly ash, clay, superplaticizer and water, it called recycle concrete. Optimization of 3D Printer machine parameters was carried out to obtain a combination of parameters with minimal error dimension. This research developed 3D Printer Machine for building construction. The parameter optimization method used Fractional Factorial Design with 3 parameters and 2 levels, it were explained by print speed (100 mm/s and 120 mm/s), layer height (6 mm and 9 mm) and extruder rotation speed (30 rpm and 40 rpm). The optimization results obtained layer height has a significant effect on high dimensional errors and the interaction of print speed and rotational speed of the extruder has a significant effect on high dimensional errors, to get the smallest dimensional error obtained with a combination of print speed parameters of 100 mm/s, layer height of 6 mm, and The extruder rotation speed is 30 rpm with a diameter dimension error of 0.0671 and a height dimension error of 0.0256.
A mobile application for assessing the product success on crowdfunding campaign: the development and usability testing Pasmawati, Yanti; Wijayanto, Titis; Tontowi, Alva Edy; Hartono, Budi
Jurnal Sistem dan Manajemen Industri Vol. 5 No. 2 (2021)
Publisher : Universitas Serang Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30656/jsmi.v5i2.4073

Abstract

Crowdfunding is one of the alternative sources of finance for product-based startups. Products are funded if the campaign is considered to be successful in reaching the target. The assessment of the success rate of product campaigns develops into three successive levels, namely overfunding, successful and unsuccessful. Due to the complication of setting up a product campaign on an online crowdfunding platform, a mobile application to aid campaigners needs to be developed. Moreover, it is essential to evaluate its ease to use. This study aims to (1) develop an android-based application, (2) evaluate the usability of the application based on user perceptions. The application ('POSCA') was developed by emphasizing user experience (UX), while the Use Questionnaire evaluated its usability. Ten participants were invited to evaluate the system usability and interface. The results suggest that 'POSCA' has good scores of usability: ‘efficiency’ = 49.11% in the fifth trial, ‘very-easy-to-learn’ (95%), ‘useful’ (85%), ‘easy-to-use’ (87%), and ‘satisfy-the-users’ (88%).
TEA PACKAGING DESIGN USING INTEGRATION OF KANSEI ENGINEERING AND EYE TRACKING FOR ENHANCING CONSUMER APPEAL Cahyawati, Amanda Nur; Fathimahhayati, Lina Dianati; Tontowi, Alva Edy
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 12 No. 1 (2024)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research aims to determine the design specifications for tea drink packaging that appeal to consumers using Kansei and eye-tracking techniques. Kansei Engineering focuses on developing products that align with consumers' feelings and emotional needs. Eye-tracking provides insights into how consumers see and interact with packaging, as evidenced by total fixation duration, allowing for the identification of design elements that attract the most attention and influence consumer perception. The application of eye-tracking and Kansei Engineering helps match customer perceptions of products with their functional and technical specifications, providing a holistic and effective approach to increasing sales and consumer satisfaction. Integrating these two methods makes the design process more consumer-focused, combining emotional and visual appeal, thereby increasing attractiveness and potential consumption. The urgency of this research lies in its potential to revitalize the tea industry in Indonesia by utilizing innovative packaging designs. Enhancing consumer appeal to tea products through the integration of Kansei Engineering and eye-tracking, which are visually and emotionally engaging, addresses the main obstacle to low tea consumption in Indonesia. Thus, it contributes to the growth of the tea market and promotes healthier beverage choices among Indonesian consumers. The research results show that an aesthetic packaging design requires a sports cap type lid, a convex bottle body, a plain motif, and a square cross-section. Ergonomic packaging design requires a flip cap type lid, a wave-shaped bottle body, a textured motif, and a round cross-section. Simple packaging design requires a straw cap type lid, a serrated bottle body, a plain motif, and a square cross-section. This research aims to revitalize Indonesia's tea industry through consumer-oriented packaging design, increasing emotional and visual appeal. Key implications include increased consumer appeal, potential for increased consumption, better marketing strategies, and packaging design innovation that resonates emotionally with consumers.
Analisis Cost Efisiensi Kolaborasi Sinergi Apple Watch Nike+ Indrajati, Heppy Riani; Mahardhika, Syaqila Erie; Tontowi, Alva Edy
Innovative: Journal Of Social Science Research Vol. 5 No. 4 (2025): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v5i4.19932

Abstract

Kolaborasi sinergi antara Apple Inc. dan Nike Inc. dalam produk wearable Apple Watch Nike+ mencerminkan strategi co-branding lintas industri yang menggabungkan kekuatan teknologi dan gaya hidup aktif. Meskipun banyak studi telah membahas aspek desain, pemasaran, dan pengalaman pengguna, kajian yang mengulas struktur biaya dan efisiensi ekonomi dari kolaborasi sinergi ini masih sangat terbatas. Penelitian ini bertujuan untuk mengisi kesenjangan tersebut dengan mengembangkan model cost-based analysis yang dapat memetakan komponen biaya produksi, distribusi, nilai merek, dan margin keuntungan produk Apple Watch Nike+. Metode yang digunakan adalah pendekatan kuantitatif deskriptif berbasis data sekunder yang diperoleh dari laporan keuangan, literatur ilmiah, dan estimasi biaya publik. Hasil penelitian menunjukkan bahwa total biaya produksi satu unit produk mencapai USD 156,50, dan meningkat menjadi USD 297 setelah memperhitungkan biaya tambahan seperti branding dan distribusi. Harga pasar sebesar USD 399 memberikan margin keuntungan sebesar 42,17% bagi pihak Apple dan Nike. Selain itu, kolaborasi sinergi ini juga menghasilkan aliran pendapatan berulang melalui layanan digital yang terintegrasi. Penelitian ini memberikan kontribusi teoritis dalam bentuk model evaluasi biaya kolaboratif dan kontribusi praktis bagi perusahaan yang mempertimbangkan strategi co-branding. Studi ini juga membuka peluang penelitian lanjutan dengan pendekatan primer dan pemodelan dinamis dalam konteks kolaborasi sinergi lintas industri di era digital.
Analisis Manajemen Pemenuhan Pelanggan pada Industri Kecil Menengah Pembuatan Tas dan Bordir Menggunakan Pemodelan System Dynamics (Studi Kasus pada CV. Kurnia Jaya – Yogyakarta) Rahmanto, Nurdin; Hartono, Budi; Tontowi, Alva Edy
Jurnal Manajemen dan Organisasi Vol. 2 No. 3 (2011): Jurnal Manajemen dan Organisasi
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (582.816 KB) | DOI: 10.29244/jmo.v2i3.14212

Abstract

Small Medium Enterprise (SME) plays a strategic role in developing countries economy. Each of SMEs has unique strategy of order fulfillment management. This is influenced by factor dynamics influencing the system. The system characteristic becomes the inspiration to be studied furthermore continues especially using system dynamics modeling approach. System dynamics modeling approach used because this method used to know and learn the system behavior. This paper represents of order fulfillment management analysis with case study at CV. Kurnia Jaya – Yogyakarta. The developed model has 4 sub models: customer order sub model, order fulfillment sub model, raw material management sub model and labor sub model. Next step is calibrating the developed model with boundary adequacy test, extreme conditions test and behavior reproduction test. After passing all these steps, the developed model to be ran with policy design (different scenario of order such as: constant order, step order, impulse order and actual order). Finally 3 alternative recommendations proposed for increasing the production rate so the order backlog and delivery delay decrease.
PENGEMBANGAN MESIN 3D PRINTING BANGUNAN UNTUK MATERIAL SISA RERUNTUHAN BANGUNAN Perttalolo, Andy Nurul Yunita; Rosid, Ibnu Abdul; Tontowi, Alva Edy
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 10 No. 1 (2022): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (572.889 KB) | DOI: 10.37971/radial.v10i1.226

Abstract

Abstrak: Pengembangan Mesin 3D Printing Bangunan Untuk Material Sisa Reruntuhan Bangunan. Material reruntuhan bangunan dapat dimanfaatkan sebagai bahan bangunan yang digunakan untuk proses rekonstruksi. Teknologi yang dapat digunakan untuk melakukan rekonstruksi bangunan adalah teknologi 3D Printer FDM. Pada penelitian ini dikembangkan material untuk teknologi 3D Printer FDM dengan memanfaatkan recycle material yang tersusun berupa semen, fly ash, clay, superplaticizer dan air yang disebut recycle concrete, serta dilakukan optimasi parameter mesin 3D Printer untuk mendapatkan kombinasi parameter dengan error dimensi yang minimal. Penelitian ini dikembangkan mesin 3D Printer untuk konstruksi bangunan. Metode optimasi parameter menggunakan Fractional Factorial Design dengan 3 parameter dalam 2 level yaitu berupa print speed (100 mm/s dan 120 mm/s), layer height (6 mm dan 9 mm) serta kecepatan putaran ekstruder (30 rpm dan 40 rpm). Hasil optimasi didapatkan layer height berpengaruh signifikan terhadap error dimensi tinggi dan interaksi print speed dan kecepatan putaran ekstruder berpengaruh signifikan terhadap error dimensi tinggi, untuk mendapatkan error dimensi terkecil didapatkan dengan kombinasi parameter print speed sebesar 100 mm/s, layer height sebesar 6 mm, dan kecepatan putaran ekstruder sebesar 30 rpm dengan hasil error dimensi diameter sebesar 0,0671 dan error dimensi tinggi sebesar 0,0256. Abstract: Building 3D Printing Machine Development for Building Ruins Residual Material. Building ruins materials can be used as building materials used for the reconstruction process. The technology that can be used to reconstruct buildings is FDM 3D Printer technology. In this study, materials for 3D Printer FDM technology were developed by utilizing recycle materials composed of cement, fly ash, clay, superplaticizer and water, it called recycle concrete. Optimization of 3D Printer machine parameters was carried out to obtain a combination of parameters with minimal error dimension. This research developed 3D Printer Machine for building construction. The parameter optimization method used Fractional Factorial Design with 3 parameters and 2 levels, it were explained by print speed (100 mm/s and 120 mm/s), layer height (6 mm and 9 mm) and extruder rotation speed (30 rpm and 40 rpm). The optimization results obtained layer height has a significant effect on high dimensional errors and the interaction of print speed and rotational speed of the extruder has a significant effect on high dimensional errors, to get the smallest dimensional error obtained with a combination of print speed parameters of 100 mm/s, layer height of 6 mm, and The extruder rotation speed is 30 rpm with a diameter dimension error of 0.0671 and a height dimension error of 0.0256.
Kesiapan Teknologi, Kelayakan Ekonomi dan Administrasi IKM Mainan di Yogyakarta Setiawan, Joni; Tontowi, Alva Edy; Sri Asih, Anna Maria
Dinamika Kerajinan dan Batik: Majalah Ilmiah Vol. 32 No. 2 (2015): Dinamika Kerajinan dan Batik
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Industri Kerajinan dan Batik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22322/dkb.v32i2.1363

Abstract

ABSTRAKMainan anak mempunyai pangsa pasar yang besar, dengan populasi anak usia  sampai 14 tahun sebesar 28,7 % dari proyeksi penduduk Indonesia tahun 2015 mencapai 73,2 juta jiwa. Dalam berbagai penelitian menunjukkan baik mainan lokal maupun impor terdapat hal-hal yang mengancam kesehatan dan keselamatan anak. Sehingga pemerintah menerbitkan Permenperin No 24 Tahun 2013 tentang pemberlakuan wajib SNI Mainan. Penelitian ini bertujuan untuk menilai profil IKM mainan di Yogyakarta. Penilaian melalui 3 pendekatan yaitu kesiapan teknologi dianalisis menggunakan metode teknometrik, kelayakan ekonomi diperhitungkan dengan analisis benefit to cost ratio dan kesiapan adminsitrasi. Hasil yang didapatkan menunjukkan bahwa jumlah  IKM di Yogyakarta yang memenuhi persyaratan ijin industri sebesar 44,4%, persyaratan merek sebesar 22,2% dan kombinasi keduanya sebesar 16,7% dari total IKM. Untuk kesiapan teknologi 16,7% IKM mempunyai TCC kurang dari 0,3 (teknologi tradisional), 77,8% IKM mempunyai TCC antara 0,3 hingga 0,7 (teknologi semi modern) dan 5,5% IKM mempunyai TCC lebih dari 0,7 (teknologi modern). Kelayakan ekonomi persentase IKM yang memenuhi kelayakan ekonomi sebesar 61%. Sehingga dapat disimpulkan bahwa IKM di DIY siap secara teknologi dan ekonomi, namun belum siap secara administrasi. Kata Kunci: SNI, mainan, IKM, sertifikasi, teknometrik ABSTRACTThe toys have a large market share, with a population of children aged up to 14 years 28.7% of the projected population of Indonesia in 2015 reached 73.2 million people. On various studies indicate both local and imported toys are threatening the health and safety of children. So the government published Permenperin No. 24/2013 concerning the implementation of mandatory Indonesian National Standard (SNI) for Toys. This study aims to assess the readiness of SMIs toys in Yogyakarta. Readiness assessment through three approaches are, readiness of technology using technometric, the calculated economic feasibility analysis of benefit to cost ratio and administration assessed. The results obtained showed that the number of SMIs in Yogyakarta which meet the requirements of industry license by 50 %, brand requirements by 22,2% and the combination of 16.7% of the total SMI. For technology readiness 16.7% of SMIs have TCC less than 0.3 (traditional technologies), 77.8% of SMIs have a TCC between 0.3 to 0.7 (semi modern technology) and 5.5% of SMIs have TCC is more than 0.7 (modern technology). Economic feasibility percentage of SMIs that meet the economic feasibility of 61%. It can be concluded that SMIs in DIY are technologically and economically ready, but not administratively.  Keywords: SNI, toys, SMIs, technometric, sertification
Co-Authors Almy, Raeshifa Diani Amanda Nur Cahyawati Ambar Pertiwiningrum Andy Nurul Yunita Pettalolo Angger Bagus Prasetiyo Anggita Gigih Wahyu Iriawan, Anggita Gigih Wahyu Anna Maria Sri Asih Aoyama, Hideki Arie Kurniawan Arif Kusumawanto Arif Kusumawanto Avin Fadilla Helmi Bimantio, Mohammad Prasanto Budi Hartono Budi Hartono Budi Rochardjo, Heru Santosa Catur Sugiyanto Dawal, Siti Zawiah Md Dawi Karomati Baroroh Deendarlianto Dhananjaya Yama Hudha Kumarajati Dian Pribadi Perkasa Djoko Kuswanto Erizal Erizal Erni Suparti, Erni Ghazali, Ihwan Hari Agung Yuniarto Herianto Heru Santoso Budi Rochardjo, Heru Santoso Budi Hideki Aoyama Ihwan Ghazali Indarto Indarto Indrajati, Heppy Riani Jamasri . Joko Sedyono, Joko Joni Setiawan Joni Setiawan Kusmono Lina Dianati Fathimahhayati, Lina Dianati Mahardhika, Syaqila Erie Marlyana, Novi Marsetyawan Heparis Nur Ekanda Soesatyo Marsetyawan HNE Soesatyo Mochammad Noer Ilman Mochammad Taha Ma’ruf Muhammad Kusumawan Herliansyah Muhammad Ridlwan Musyarofah, Siti Afiani Nugraha Muharafandy Perttalolo, Andy Nurul Yunita Prabowo, Teguh Ari Putra, Gaustama Putra, Ikbal Rizki Raeshifa Diani Almy Rahardyan Magetsari Rahmanto, Nurdin Rashid, Salwa Hanim Abdul Rosid, Ibnu Abdul Rudy Firman Prakosa Salwa Hanim Abdul Rashid Sella Antesty Siti Sunarintyas Siti Zawiah Md Dawal Slamet Widyanto, Slamet Soedarmanto Indarjulianto Soetiarso, Lilik Susilo Adi Widyanto Syawaluddin Adha Pohan Taufik Hidayat Titis Wijayanto Tri Purwanti Widiastuti, Maria Goreti Widowati Siswomihardjo Widyanto, Slamet A. Widyastuti Widyastuti Windharto, Agus Wiratni Wiratni, Wiratni Wuri, Margaretha Arnita Yanti Pasmawati Yeni Yustisia