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All Journal Jurnal Ilmu Lingkungan Jurnal Ilmiah Teknologi dan Rekayasa Jurnal Usia Dini Jurnal Sains dan Teknologi Jurnal Teknologi Pendidikan JISI UMJ (Jurnal Integrasi Sistem Industri UMJ) Jurnal IPTEK JURNAL KESEHATAN LINGKUNGAN: Jurnal dan Aplikasi Teknik Kesehatan Lingkungan PRODUCTUM : Jurnal Desain Produk (Pengetahuan dan Perancangan Produk) JMM (Jurnal Masyarakat Mandiri) Journal of Education and Instruction (JOEAI) International Journal of Community Service Learning Journal of Tropical AgriFood Journal of Engineering and Scientific Research (JESR) Jurnal Sistem Teknik Industri Food ScienTech Journal Jurnal Riset Teknologi Pencegahan Pencemaran Industri Ruwa Jurai: Jurnal Kesehatan Lingkungan International Journal of Tourism and Hospitality in Asia Pasific Vokatek : Jurnal Pengabdian Masyarakat Journal Serambi Engineering (JSE)

Yosef Barita Sar Manik

Environmental Engineering Study Program, President University, Cikarang, Indonesia

Author-ID : 2262653

Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering 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 Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Analysis of Stakeholder Attitudes toward Sustainable Tourism Development of Lake Toba Area Nababan, Elserida; Manalu, Santi Agustina; Siboro, Benedikta Anna Haulian; Manik, Yosef
International Journal of Tourism and Hospitality in Asia Pasific Vol 4, No 3 (2021): October 2021
Publisher : AIBPM Publisher

The purpose of this study is to analyze the attitude of stakeholders towards sustainabletourism development in Lake Toba, Indonesia. The indicators used to measurestakeholder’s attitude were adopted from the United Nations World Tourism Organizationand grouped into the human system and ecosystem categories. A total of 361questionnaires were collected from several stakeholders of Lake Toba tourism.Stakeholders’ attitudes were analyzed by multiplying their level of trust in their level ofimportance to the tourism development indicators. The gap between trust andimportance will be mapped on the importance-performance analysis diagram. Theanalysis indicated that the stakeholders' attitude is generally optimistic about the tourismdevelopment in Lake Toba. However, the level of optimism varies among stakeholders.Tourism entrepreneurs and workers have the lowest attitude value compared to localpeople and tourists. Also, stakeholders which have low income or whose income partlyor most comes from the tourism industry or live in the Lake Toba Area are those in thekey priority to consider. They provide the lowest level of trust but provide the highestlevel of importance in development. Decision-makers must give a more serious approachto these stakeholders to get maximum support.

Identification, Characterization and Stakeholder Analysis of Eco-tourism Destinations in Lake Toba Area Paramitha, Natalia; Manik, Yosef; Halog, Anthony
International Journal of Tourism and Hospitality in Asia Pasific Vol 2, No 1 (2019): February 2019
Publisher : AIBPM Publisher

This study is aimed at identifying and characterizing the eco-tourism destinations in Lake Toba Area as well as mapping and analyzing the stakeholders involved in its value chain and governance. The study was conducted between January and April 2018 whereby a snowball sampling method was employed in identifying the eco-tourism destinations. A semi-structured questionnaire was used to record the characteristics of each destination point in terms of access, attraction, and amenities. Seventeen eco-tourism destinations located in seven regencies along Lake Toba Area have been identified. While access to these tourist destinations has been good enough, the destinations are lacking of attractions. The attractions are limited to natural panoramic views, such a pine forest and spectacular lake view without adequate activity options that can be done by tourist. In terms of supporting amenities, there are still many rooms that require attention and improvement. After that, the study continued by analyzing the role of stakeholders involved directly or indirectly in the operation, governance, and policy of eco-tourism destinations in the lake Toba region. The stakeholders are mapped and clustered based upon their power and interest into four categories: (i) key players, (ii) subjects, (iii) trend setter, and (iv) the crowd. It appears that owner/ administrator, regional tourism office, and several interrelated government offices, such as the Ministry of Tourism and the Ministry of Forestry and Environment are key players which possess high power and interest. On the other hand, private sector, mass media, and local communities are identified as dormant stakeholders or potential trend setters to some extent who possess high power but have low interest. The results of this study are essential inputs for further investigating the socio-economic impacts of the tourism-based development in the Lake Toba through Social Life Cycle Assessment methodology. Keywords: Lake Toba Area, eco-tourism, stakeholder analysis, life cycle assessment

Penciptaan Teknologi Tepat Guna untuk Peningkatan Kualitas dan Produktifitas Produksi Produk Turunan Jahe Merah di Sumatera Utara Benedikta Anna Haulian Siboro; Manik, Yosef; Tampubolon, Grace Manzoya; Situmorang, Eva Daoni Veronika; Sinaga, Hotma
International Journal of Community Service Learning Vol. 7 No. 4 (2023): November
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijcsl.v7i4.67881

Sebuah UMKM produsen produk turunan jahe merah di Sumatera Utara menghadapi permasalahan dalam produktivitas dan kualitas proses produksinya. Masalah utama yang dihadapi adalah waktu yang tinggi untuk mencuci jahe merah dan ketidakseragaman hasil pemotongan permen jahe. Untuk mengatasi masalah ini, tim pengabdian kepada masyarakat menciptakan teknologi tepat guna menggunakan pendekatan rekayasa balik. Teknologi ini terdiri dari alat pencuci jahe merah mekanis berbentuk tabung dengan daya listrik dan pisau pemotong permen jahe berbahan stainless steel yang menyerupai garpu dengan 10 mata pisau. Hasil pengujian menunjukkan bahwa alat pencuci jahe merah ini mampu membersihkan 150 kg jahe merah dalam 1 jam dan mengelupas lebih dari 75% kulit jahe merah, meningkatkan produktivitas sebesar 12 kali lipat. Pisau pemotong permen jahe mampu memotong 100 biji permen berukuran 1,5 x 1,5 cm dalam 11 detik dengan hasil pemotongan yang seragam. Teknologi tepat guna ini telah diserahterimakan dan terbukti meningkatkan kinerja produksi UMKM mitra pengabdian kepada masyarakat. Dengan demikian, penelitian ini mengatasi masalah produktivitas dan kualitas dalam proses produksi UMKM produsen produk turunan jahe merah. Teknologi tepat guna yang dikembangkan berhasil mengurangi waktu pencucian jahe merah dan meningkatkan seragamitas hasil pemotongan permen jahe. Implikasi dari penelitian ini adalah peningkatan kinerja produksi UMKM dan potensi peningkatan daya saing di pasar.

Instrumen Penilaian Derajat Kecanggihan Sistem Pendidikan E-Learning Usia Dini (Studi Kasus: Pendidikan Formal TK (Taman Kanak-Kanak) Dengan Pendekatan Teknometrik Manik, Yosef Barita Sar; Simbolon, Vismeike Septauli; Simanjuntak, Jesica Pratiwi; Siagian, Ellen; Tambunan, Yohana; Nababan, Christine; Lubis, Windy; Pangaribuan, Natasya; Siahaan, Monalisa
Jurnal Usia Dini Vol. 7 No. 2: Desember 2021
Publisher : PG PAUD FIP UNIMED

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jud.v7i2.30589

Pendidikan mengalami disrupsi dalam skala besar dikarenakan otomatisasi dan kemajuan teknologi, informasi menjadi aksesibel dan peran lembaga pendidikan bukan lagi menjadi satu-satunya sumber ilmu pengetahuan dan informasi. Penelitian ini bertujuan untuk membuat kerangka penilaian teknologi e-learning pada pendidikan usia dini (PAUD) kategori formal yaitu Taman Kanak-kanak (TK) dan untuk merumuskan kriteria dan indikator penilaian teknologi dengan metodologi teknometrik, dimana kriteria tersebut akan dikelompokkan menjadi 4 aspek yaitu technoware, humanware, infoware, dan orgaware. Hasil penelitian menunjukkan komponen teknologi yang digunakan sebagai parameter penilaian derajat kecanggihan teknologi pembelajaran e-learning pada usia dini kategori formal yaitu taman kanak-kanak yang dirangkum dan dispesifikasikan ke dalam bentuk kriteria, sub-kriteria, dan sub-sub kriteria.

Hazard Identification, Risk Assessment and Control (HIRAC) on Water Solid Contents Determination at Environmental Chemistry Laboratory of President University Manik, Yosef Barita Sar; Mayriza, Azka Leona; Putri, Brilian Maulani; Keisha Fawwaaz; Huri, Khalila Kireina; Maulidinnisa, Vira Puspita
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 15 No. 2 (2024): November
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2024.v15.no2.p94-102

This study conducted a Hazard Identification and Risk Assessment (HIRA) on Solid Contents Experiment that is taking place in the President University Environmental Engineering Laboratory. The main objective in this study is to identify potential hazard during experiment, to understand the risk level of hazards in the Environmental Engineering Laboratory, and to propose strategies and give improvement in laboratory practices. The methods used in this study is Hazard Identification, Risk Assessment and Control (HIRAC). As the result, the hazards that are identified in this study is slip and fall, respiratory hazard, fragile object, burn and physical injury, and electrical hazard. There are 18 hazards observed, and priority sorting is done to identify which hazard is high and medium in level and needs further caution, which turned out to be 12 medium to high hazards. The most critical hazard is pouring the water sample inti the vacuum using volumetric glass, because it has risk of slipping, falling, and handling when the water sample is spilled, and it is also a fragile object. So, this study identifies the effectiveness of HIRA method, finding steps that should be done to improve the operationsl conditions of the laboratory, and update practical education afterwards.

Design of Preventive Maintenance System for A Product Design Lab using Reliability Centered Maintenance (RCM) Methodology Marpaung, Bintang Rachel Aprilia; Manik, Yosef; Siboro, Benedikta Anna Haulian
Jurnal IPTEK Vol 25, No 2 (2021): December
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2021.v25i2.2369

The product design and innovation laboratory, which is still relatively new, does not yet have a maintenance model to anticipate damages that may occur in the future. The purpose of this research is to build preventive maintenance to anticipate unwanted events such as sudden damage and Standard Operational Procedure (SOP) for laboratory facilities. The method used is Reliability Centered Maintenance (RCM) using EasyFit 5.5 software, obtained a repair schedule with minimum downtime. The results of the Reliability Centered Maintenance (RCM) method obtained maintenance recommendations in the form of Condition Directed (CD) on 14 components that might damage the product design and innovation laboratory facilities, Finding Failure (FF) on 8 components that might damage the design laboratory facilities. products and innovations and Time Directed (TD) on 5 components that may cause damage to product design and innovation laboratory facilities, and also Based on the results of preventive maintenance built, there is a Standard Operational Procedure (SOP) which includes the use of laboratory facilities following work instructions for the use of equipment, use of facilities the laboratory follows the work instructions for use, all validation results must be stored in the form of records in the form

Asesmen Teknologi untuk Mesin 3D Printer di Laboratorium Desain Produk dan Inovasi Salsana, Bella; Siboro, Benedikta AH; Manik, Yosef
JST (Jurnal Sains dan Teknologi) Vol. 11 No. 1 (2022)
Publisher : Universitas Pendidikan Ganesha

Mesin 3D printer adalah salah satu dampak kemajuan bidang ekonomi akibat revolusi industri 4.0. Mesian 3D printer adalah metode yang cara kerjanya dengan menumpuk material untuk membuat sebuah objek 3 dimensi. Tujuan penelitian untuk mengidentifikasi perbedaan karakteristik fasilitas mesin 3D printer A dan mesin 3D printer B sebagai fasilitas technoware di Lab. Desprin. Dengan analisis komparasi diperoleh pemetaan jenis mesin 3D printer paling relevan pada setiap mata kuliah yang dilayani lab.desprin. Jenis penelitian ini adalah penelitian eksperimen dengan variabel yang dianalisis adalah Usage Filament, presisi dimensi, waktu produksi, deformasi produk dan kekasaran permukaan. Pengolahan data pada penelitian ini dilakukan dengan uji ANOVA satu arah atau one way ANOVA dengan bantuan software SPSS (Statistical Package for Social Science) version 20.0 for windows dengan tingkat signifikansi 0, 05. Dari hasil analisis ditemukan bahwa perbedaan karakteristik utama terdapat pada variabel waktu produksi, presisi dimensi, dan kekasaran permukaan. Hasil ini digunakan untuk memetakan penggunaan mesin 3D printer kedalam kebutuhan pembelajaran pada semua mata kuliah yang dilayani oleh Lab. Desprin.

Life Cycle Assessment a Coal Mining in East Kalimantan Diharjo, Deniela Flora Mariyne Wongso; Manik, Yosef Barita Sar
JST (Jurnal Sains dan Teknologi) Vol. 12 No. 3 (2023): Oktober
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v12i3.68103

A Life Cycle Assessment study aimed at identifying the environmental impacts of a coal mining process has been carried out. The scope of the process includes land clearing to coal barging (cradle to gate). The functional unit used is the production of 1 ton of coal. The inventory data in this research is site specific, collected from a mining company located in East Kalimantan during the period September 2022 to June 2023. Impact analysis was characterized using the ReCiPe 2016 midpoint (H) method with the help of OpenLCA v.2.0.2 software. From the impact analysis, it was found that the coal mining operations studied have the potential to produce Fine Particulate Matter Formation (0.122 kg PM2.5eq), Global Warming (73.28 kg CO2eq), Terrestrial Acidification (0.4114 kg SO2eq), Ozone formation-human health and Ozone formation-terrestrial ecosystems (0.54 kg NOx eq), Land Use (4.42×10-4 m2a crop eq), and Water consumption (11.44 m3). The potential for Particulate Matter Formation and Global Warming is generally related to the process of moving materials and water consumption caused by the process of transporting coal. From this research, it was found that the overburden stripping process is an environmental hotspot for the coal mining process because it has the greatest potential impact of all existing processes.

Effect of NaCl Activator Concentration on Iodine Adsorption of PET- based Activated Carbon Agus, Fadilatur Rahmi; Yosef Barita Sar Manik
JST (Jurnal Sains dan Teknologi) Vol. 13 No. 2 (2024): July
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v13i2.81448

This study examines the use of NaCl as an activator in the production of activated carbon from Polyethylene terephthalate (PET) waste to overcome environmental problems due to the accumulation of plastic waste that is difficult to decompose. This study aims to examine the effect of NaCl concentration on the iodine adsorption capacity of activated carbon. This type of research is experimental research. The samples used were 15 samples of activated carbon. Data collection methods through laboratory experiments. Data analysis was performed by simple linear regression analysis. The results of the analysis showed that variations in NaCl concentration had a significant effect on iodine adsorption capacity, with an R² value of 0.868 indicating 86.8% of variations in adsorption capacity could be explained by NaCl concentration. A concentration of 1M was considered optimal in balancing effectiveness, production cost, and environmental impact, although higher concentrations resulted in better adsorption capacity. This study concludes that the utilization of PET waste for activated carbon production provides a sustainable solution to plastic pollution, reduces waste while producing high-value products for industrial applications, and contributes to the development of more environmentally friendly and economical activated carbon production methods.

Determination of Critical Indoor Air Quality Parameters in Environmental Chemistry Laboratory of President University Gabryella Lovia Sihombing; Yosef Barita Sar Manik
Jurnal Serambi Engineering Vol. 10 No. 4 (2025): Oktober 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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

The Environmental Engineering Laboratory at President University is obliged to systematically identify and manage Environmental Health and Safety (EHS) aspects to comply with LAM Engineering Regulation No. 1 of 2025, which mandates Higher Education Institutions in Engineering to ensure the provision of appropriate laboratory infrastructure and continuous monitoring of EHS conditions within their facilities. Through a systematic identification process that aligns activities and working conditions with relevant regulations, 9 critical parameters have been established, including temperature, humidity, CO2, PM2.5, PM10, lighting, noise, airflow, and Total Suspended Particles (TSP). These findings were obtained based on the identification of potential pollution risks based on laboratory experiments based on study program modules, measurements of dimensions and equipment as well as indoor air circulation conditions and literature review on indoor air quality study and regulation. The results of the critical parameter determination provide a comprehensive picture of critical indoor air quality parameters in laboratories, thus forming the basis for the development of an appropriate EHS management system at President University laboratories. Based on these research results, it is recommended to regularly monitoring indoor air quality with monitoring device, move the furnace as source of particulates, and maintaining humidity by installing a dehumidifier to ensure a healthy and standard-compliant learning environment.

Co-Authors Agus, Fadilatur Rahmi Aisyah Bestari Siswohartono Alexandra Paloma Sarmento Alya Syafiqa Z Amaral, Joaozinho Jubileu San Sao Anthony Halog Arifah Arsanti Aulia Rizqi Aufa Rafiqi Azwar, Arrizal Benedikta Anna Haulian Siboro Bintang Rachel Aprilia Marpaung Brilian Maulani Putri Brilian Maulani Putri Chandra Aden Akbar Pamungkas Christine Nababan Daffa Renaldhi Chaniago Mairuhu Daniel Simanjuntak Diharjo, Deniela Flora Mariyne Wongso Dinda Fairuz Nadhifah Diogo Anibal El Isma Naomi Thorndike Sihombing Elisabeth Pardede Ellen Siagian Elserida Nababan Elvhan Chatisla Cosaken Farhan Saefurrahman Fitri Butarbutar Gabryella Lovia Sihombing Haidar, Muhammad Labib Halog, Anthony Huri, Khalila Kireina Hutauruk, Joshua Partogi Ignatius David Fernando Indri Purba Inna Stephanie Jauza Dzihni Alifa Jayawarsa, A.A. Ketut Jesica Pratiwi Simanjuntak Johanes Surya Utama Sede Jovian Nathan Sutedja Julianti, Metiovani Karlina Gultom Keisha Fawwaaz Keisha Fawwaaz Kimberly, Jaqueline Andrea Laura Angeline Hutahean Lubis, Windy Lumbangaol, Anita Febriany Manurung, Gracia Natalie Emmanuela Marpaung, Bintang Rachel Aprilia Maulidinnisa, Vira Puspita Mayriza, Azka Leona Melani Fera Ayulia Melisa Aprina Monalisa Martha Siahaan Monica Rumondang Panjaitan Nababan, Christine Nababan, Elserida Natalia Paramitha Natasya Pangaribuan Nati Nati Ni Made Amanda Putri Paramerta Pangaribuan, Natasya Panjaitan, Santi Paramitha, Natalia Putri, Brilian Maulani Putri, Nurul Ayanda Radia, Sabrina Alia Rahayu, Oky Rahayu, Wanti Rivasha Nirmala Viandar Putri Rosália Anastácia da Costa Rut Tambun Salsana, Bella Sanlio Gomes Santi Agustina Manalu Saraswati Sintia Widi Siagian, Ellen Siboro, Benedikta AH Sikstin Sihombing Simanjuntak, Donda Natalia R. Simanjuntak, Indah Debora Salmanita Simanjuntak, Jesica Pratiwi Simbolon, Vismeike Septauli Simorangkir , Desi Sinaga, Hotma Sintong Joshua Siahaan Sitorus, Felix Arnes Situmorang, Eva Daoni Veronika Sri Hanna Siahaan Susi Limbong Tambunan, Yohana Tampubolon, Grace Manzoya Tiara, Karen Vismeike Septauli Simbolon Windy Lubis Yohana Tambunan

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