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All Journal Agrikultura JOURNAL ON SOCIAL ECONOMIC OF AGRICULTURE AND AGRIBUSINESS Jurnal Pamator : Jurnal Ilmiah Universitas Trunojoyo Madura EKOMBIS REVIEW: Jurnal Ilmiah Ekonomi dan Bisnis Mimbar Agribisnis: Jurnal Pemikiran Masyarakat Ilmiah Berwawasan Agribisnis Jurnal Penelitian Pendidikan IPA (JPPIPA) EKONOMIS : Journal of Economics and Business Jurnal Agroqua: Media Informasi Agronomi dan Budidaya Perairan Indonesian Journal of Agricultural Research JURNAL AGRICA Journal of Saintech Transfer Agro Bali: Agricultural Journal Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Randwick International of Social Science Journal International Journal Reglement & Society (IJRS) International Journal of Educational Review, Law And Social Sciences (IJERLAS) Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Sibatik Journal : Jurnal Ilmiah Bidang Sosial, Ekonomi, Budaya, Teknologi, Dan Pendidikan Proceedings Series on Physical & Formal Sciences East Asian Journal of Multidisciplinary Research (EAJMR) Formosa Journal of Multidisciplinary Research (FJMR) Utsaha: Journal of Entrepreneurship Jurnal Teknologi dan Manajemen Industri Terapan Jurnal Ilmiah MEA (Manajemen, Ekonomi, dan Akuntansi) Jurnal AGRISEP: Kajian Masalah Sosial Ekonomi Pertanian dan Agribisnis Majapahit Journal of Islamic Finance dan Management Baileo: Jurnal Sosial Humaniora Majapahit Journal of Islamic Finance dan Management West Science Agro AGRARIS: Journal of Agribusiness and Rural Development Research Journal of Environmental and Development Studies Indonesian Journal of Forestry Research Proceedings of The International Conference on Computer Science, Engineering, Social Sciences, and Multidisciplinary Studies
Wibowo, Rulianda P.
Program Studi Agribisnis, Fakultas Pertanian, Universitas Sumatera Utara
Religion 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 Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Veterinary Other

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Development and Performance Validation of a Prototype Digital pH and Temperature Meter for Consumer Applications Ikhsan Siregar; Joiverdia Arifiyanto; Rulianda Purnomo Wibowo; Mahatir Muhammad
Jurnal Penelitian Pendidikan IPA Vol 11 No 11 (2025): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i11.12434

Abstract

This study aims to develop and evaluate an Arduino-based digital pH meter and thermometer prototype equipped with automatic temperature compensation (ATC) and a 3D-printed casing for practical household and micro-industrial applications. The device was tested on fifteen consumer products from four categories—food, beverages, hygiene, and cosmetics—at three temperature levels (30°C, 35°C, and 40°C). Measured parameters included pH, millivolt (mV) outputs, stabilization time, and reading stability. The results showed that pH values decreased with increasing temperature, consistent with H⁺ ion dissociation principles. For example, vinegar (pH 2.80–2.68) and soda (pH 3.45–3.36) showed the most significant decreases, while basic products such as detergent (pH 10.20–10.08) and liquid soap (pH 9.10–9.00) exhibited stable negative mV readings. The average stabilization time ranged from 6 to 12 seconds, with all samples showing stable readings (±0.01 pH variation). Calibration results indicated that three-point calibration (pH 4, 7, 10) produced the highest accuracy (±0.04 pH; R² = 0.993). The 3D-printed PLA casing provided durable protection, ergonomic handling, and fast reprintability. Overall, the prototype demonstrated reliable, accurate, and stable performance, proving that low-cost hardware and software integration can yield an efficient and accessible pH and temperature measuring tool.
PROJECT MANAGEMENT ANALYSIS OF COMMUNITY BASED SANITATION ACTIVITIES IN LANGKAT REGENCY Abdilah Ragilia M; Wahyu Ario Pratomo; Rulianda Purnomo Wibowo
International Journal of Educational Review, Law And Social Sciences (IJERLAS) Vol. 5 No. 4 (2025)
Publisher : CV. RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijerlas.v5i4.3877

Abstract

This study analyzes project management practices and proposes strategic recommendations to minimize time addendums in the implementation of the Community-Based Sanitation (Sanimas) activities in Langkat Regency. Sanimas, initiated by the Ministry of Public Works and Housing, aims to expand access to proper sanitation through community participation. Despite its achievements, the program has faced execution challenges, particularly related to time constraints under the self-managed construction model. The research employs the Critical Path Method (CPM) to identify key activities affecting project duration. Findings indicate that delays in procurement and construction stages significantly contributed to the extension of project timelines beyond the stipulated 90 days. The total project duration based on the CPM analysis was found to be 47 days for critical path activities. This study recommends strengthening the capacity of Community-Based Implementation Team, enhancing coordination with stakeholders, integrating risk-based scheduling, and institutionalizing post-project evaluations. These strategic improvements are essential for ensuring timely and efficient implementation of future Sanimas projects.
How Beef, Chicken, and Egg Demand Elasticities Vary with Income in Indonesia Rulianda Purnomo Wibowo; Dian Pebriyani; Titien Indrawati; Muhammad Khaliqi
Jurnal AGRISEP JURNAL AGRISEP VOL 24 NO 01 2025 (MARCH)
Publisher : Badan Penerbitan Fakultas Pertanian, Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jagrisep.24.01.361-384

Abstract

Regional economic factors, income levels, and the availability of substitutes influence the demand for beef, chicken, and eggs in Indonesia. Beef is considered a luxury commodity in higher-income areas and exhibits greater price sensitivity in lower-GDP regions. Chicken, a staple protein source, generally demonstrates inelastic demand but increases price sensitivity in the lower GDP areas. Eggs, being more affordable, exhibit higher price elasticity, particularly in lower-GDP regions, and often complement beef consumption. This study examines the own-price, cross-price, and income elasticities for beef, chicken, and eggs in Indonesia, comparing these effects across provinces with varying income per capita levels. The research utilized secondary data from the Central Statistics Agency, encompassing per capita commodity consumption, consumption values, and prices from 2013 to 2023 across 33 provinces. The Almost Ideal Demand System (AIDS) model analyzed the interrelated consumption of beef, broiler chicken, and eggs. Certain provinces were excluded due to data limitations, particularly in newly formed regions with insufficient historical records. The findings of this research indicate that price sensitivity, regional economic factors, and consumer preferences influence the demand for beef, chicken, and eggs. Income disparities affect substitution patterns, wherein rising chicken prices lead to increased beef consumption, while eggs complement beef and premium varieties are perceived as luxury goods. Consequently, there is a necessity for policies addressing regional economic disparities, food security, and affordability, especially as premium products such as organic eggs become more prevalent and the cost of animal proteins increases.
CONSUMPTION PATTERNS, PRICE VOLATILITY, AND HOUSEHOLD ADAPTATION BEHAVIOR TOWARD THE RED CHILI COMMODITY IN MEDAN CITY R. B. Moh. Ibrahim Fatoni; Rulianda Purnomo Wibowo; Dian Pebriyani
International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Vol. 6 No. 2 (2026): April
Publisher : CV. Radja Publika

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

Abstract

Red chili is among the most volatile horticultural commodities and a principal driver of food inflation in Medan City. This study aims to analyze household food consumption patterns, the dynamics and volatility of red chili prices, and consumer adaptation behavior in response to chili price fluctuations. A quantitative-descriptive approach was employed, drawing on a survey of 1,026 households distributed across more than thirty traditional markets, combined with daily market price data for the January 2023–September 2025 period. The data were analyzed using volatility measures (coefficient of variation) and a percentile-based threshold, price–consumption correlation, and chi-square tests. The findings reveal that food expenditure absorbs 65–75 percent of monthly household spending, while red chili is purchased by 92 percent of households on a daily-to-weekly basis, predominantly through traditional markets. The average curly red chili price reached IDR 36,890/kg with a coefficient of variation of 0.40, the highest among the commodities examined. Price and consumption are strongly and negatively correlated (r = –0.68), and the chi-square test confirms a significant relationship between chili price fluctuation and consumption reduction (χ² = 28.512; p = 0.000). Households adapt defensively by seeking cheaper markets, reducing portions, and substituting fresh chili with dried chili or bottled sauce, thereby lowering nutritional quality among low-income coastal households. The policy implications emphasize early-warning price systems, cold-chain strengthening, and supply diversification.
Socioeconomic Dimensions of Food Price Fluctuations and Regional Inflation in Indonesia: Insights from Java and Sumatra Wirda Zahra Siregar; Rulianda Purnomo Wibowo; Elisabet Siahaan
Baileo: Jurnal Sosial Humaniora Vol 3 No 2 (2026): January 2026
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/baileofisipvol3iss2pp332-352

Abstract

This study investigates the socioeconomic dynamics of food price volatility and its asymmetric impacts on regional inflation across Java and Sumatra, Indonesia’s two most economically influential islands. The research aims to analyze the short- and long-term effects of food commodity price fluctuations on regional inflation, compare the structure and magnitude of price transmission mechanisms between the two regions, and identify key commodities that drive inflation disparities. Using a quantitative explanatory approach integrated with sociological interpretation, monthly time-series data from 2020 to 2024 across six provinces are analyzed through ADF stationarity tests, VAR/VECM models, Granger causality, impulse response functions, and variance decomposition, complemented by sociological indicators such as logistics index, GRDP per capita, and household food expenditure ratio. The findings show that short-term inflationary pressures stem mainly from price shocks in red chili, shallots, and cooking oil, while long-term persistence is driven by dependence on rice, beef, and chili. Inflation in Java is largely demand-driven, whereas Sumatra’s inflation reflects supply-side constraints and weak market integration. The study’s novelty lies in combining macroeconomic modeling with regional sociological analysis, offering a socioeconomic inflation dynamics framework that reframes inflation as a socially embedded process. The research advances economic sociology by linking inflation behavior with social structure, regional inequality, and policy responsiveness.
Consumer Behavior in Adopting Useetv Go Streaming & Video-On-Demand Services Using Unified Theory Of Acceptance And Use Of Technology 2 (UTAUT2) Endang Rizkinawaty Sembiring; Sugih Harto Pujangkoro; Rulianda Purnomo Wibowo
Jurnal Pamator : Jurnal Ilmiah Universitas Trunojoyo Vol 16, No 2: 2023
Publisher : Universitas Trunodjoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/pamator.v16i2.19993

Abstract

The increase in online activities is followed by increased spending to meet online needs, one of which is entertainment services. One of the most widely accessed entertainment facilities is digital TV and video-on-demand or VoD services. The service, which began to flourish in 2016, is an online video content provider system with a subscription payment mechanism. One of its appeals, the user has the freedom to decide what he wants to see. One way to entertain yourself which has become a new lifestyle pattern is to watch streaming shows or subscription videos online. A McKinsey Company survey at the end of March said that as many as 45% of respondents spent more on home entertainment during the pandemic. On the other hand, 85% of respondents reduced their spending on outdoor entertainment. Subscription video streaming services (video-on-demand / VoD) are one of the entertainment options that can be done at home. UseeTV GO is an Over-the-Top (OTT) TV and Video mobile application service, using the publicly accessible Internet. The content is available via smartphones or tablets with broadband connections. Currently, UseeTV Go app users are around 300 thousand active users every month, far below Vidio.com and Netflix. With the low Monthly Active of UseeTV Go's Video-on-demand app users in the pre-growth area far below, Netflix, Vidio.com, and user activeness based on time, UseeTV Go is in the Average Performer area. Therefore, UseeTV Go consumer assessment of the variables contained in the modified UTAUT2 model (Performance Expectancy, Effort Expectancy, Social Influence, Facilitating Condition, Hedonic Motivation, Price Value, Habit, and Content) was carried out on Behavioural Intention on UseeTV Go video-on-demand service in Indonesia.
Pengaruh Social Media Marketing Terhadap Minat Beli Pelanggan Martabak Ardhy Di Kota Medan Dengan Brand Awareness Sebagai Variabel Intervening Nadhila Rasyad Siregar; Rulianda Purnomo Wibowo; Doli Muhammad Jafar Dalimunthe
Jurnal Teknologi dan Manajemen Industri Terapan Vol. 5 No. 1 (2026): Jurnal Teknologi dan Manajemen Industri Terapan
Publisher : Yayasan Inovasi Kemajuan Intelektual

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55826/jtmit.v5i1.1490

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh social media marketing terhadap minat beli pelanggan Martabak Ardhy di Kota Medan dengan brand awareness sebagai variabel intervening. Penelitian menggunakan pendekatan kuantitatif dengan desain konklusif kausal melalui metode survei terhadap 120 responden yang merupakan pengguna aktif media sosial dan pernah terpapar konten promosi Martabak Ardhy dalam enam bulan terakhir. Data dikumpulkan menggunakan kuesioner berskala Likert dan dianalisis dengan Structural Equation Modeling berbasis Partial Least Squares (PLS-SEM) menggunakan software SmartPLS 4.0. Hasil penelitian menunjukkan bahwa social media marketing berpengaruh positif dan signifikan terhadap brand awareness dan minat beli, serta brand awareness berpengaruh positif dan signifikan terhadap minat beli. Selain itu, brand awareness terbukti memediasi secara parsial pengaruh social media marketing terhadap minat beli, yang menandakan bahwa aktivitas pemasaran digital tidak hanya mendorong niat beli secara langsung, tetapi juga bekerja melalui penguatan kesadaran merek. Temuan ini mengindikasikan bahwa efektivitas social media marketing Martabak Ardhy akan lebih optimal apabila strategi konten tidak hanya berfokus pada daya tarik visual dan promosi jangka pendek, tetapi juga pada konsistensi identitas merek dan penguatan memori konsumen. Penelitian ini memberikan kontribusi teoretis pada kajian pemasaran digital UMKM kuliner serta implikasi praktis bagi pengelolaan strategi social media marketing yang lebih terarah dan berkelanjutan.
Digitalization of rabbit farming in Medan City, Indonesia Rulianda Purnomo Wibowo; Galih Ari Wirawan Siregar; Hayatunnufus Hayatunnufus; Muhammad Khaliqi; Herfita Rizki Hasanah Gurning
Journal of Saintech Transfer Vol. 8 No. 2 (2025): Journal of Saintech Transfer
Publisher : Talenta Publisher Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jst.v8i2.13668

Abstract

Rabbit farming is presently being developed as an alternative source of animal protein in Indonesia. Some of these challenges include the appropriate keeping of records related to production processes and the marketing of products. In response to the challenges encountered by rabbit farming group, a proposed solution entails offering training on the use of digital applications for financial bookkeeping and marketing purposes. This community service initiative is geared towards facilitating the implementation of an Android application aimed at enhancing the operational efficiency of rabbit farming businesses. The approach used in this community service is Participatory Rural Appraisal. The results of the Community Service activities indicated that the farmers were proficient in using the Adorabbit application and followed the instructions effectively. Based on this observation, the adorabbit application was inferred to provide significant assistance to rabbit farmers in Medan City, specifically in the areas of recording rabbit production and managing finances, thereby, enabling the enhancement and expansion of their livestock businesses.
ANALYSIS OF THE EXPORT COMPETITIVENESS OF INDONESIAN ARECA NUTS TO THE UNITED ARAB EMIRATES Fery Putra Alam Bara Munthe; Rulianda P Wibowo; Tavi Supriana
International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Vol. 5 No. 6 (2025): December
Publisher : CV. Radja Publika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijebas.v5i6.5025

Abstract

This study aims to analyze the export competitiveness of Indonesian areca nut to the United Arab Emirates (UAE). The objective of the research is to evaluate the comparative advantage of Indonesian areca nut exports compared to other exporting countries such as India, Myanmar, Malaysia, and Thailand from 2013 to 2023 using the Revealed Comparative Advantage (RCA) method. The study uses secondary data collected from Trademap and UN Comtrade, focusing on the value and volume of areca nut exports. The results indicate that Indonesia has a relatively strong export competitiveness, as shown by RCA values consistently above 1 in several years. However, Indonesia faces competition from Myanmar and Thailand, which also demonstrate significant comparative advantages. The findings suggest that the Indonesian government should focus on improving export policies, ensuring product quality, and expanding market access to sustain and improve the competitiveness of Indonesian areca nut in the UAE market.
Co-Authors Abdilah Ragilia M Agustina Agustina Andri Suryadi Prasetya Angga Satria Annisa Adawiyah Ar Raihan Suti Nasution Ardiansyah Toy, Jefry Atika Hidayati Batubara, Mhd. Zulfadli Beby Karina Fawzeea Sembiring Binaria Sinaga Christine Caroline Pangaribuan Christy Ardelia Tarigan David Dior J Lubis Dedy Widarta Diah Ramadhani Sigalingging Dian Pebriyani Dian Pebriyani Diana Chalil Doli Muhammad Jafar Dalimunthe Dwi Rachmina Elfira Rahmadani Elisabet Siahaan Emalisa Emalisa Emalisa Emalisa Endang Rizkinawaty Sembiring Endang Sulistya Rini Faiz Andito Fery Putra Alam Bara Munthe Feryanto Galih Ari Wirawan Siregar Habibulah Hakim, Tharmizi Harsanto, Willy Aria Hasman Hasyim Hasugian, Hardy Hayatunnufus Hayatunnufus Henny Crosita Limbong Herawati Herfita Rizki Hasanah Gurning Ibnu Afdillah Lubis Ikhsan Siregar Ilma, Fitri Indriyanti, Tietin Inomo Pratama Intan Mulia Intan, Seli Venny Irawan, Muhammad Ari isfenti sadalia Isfenti Sadalia Iskandarini Joiverdia Arifiyanto Kellin Tarigan Kesuma, Sinar I Indra Laurensius Parsaulian Sitinjak Lindawati Lindawati Lovina Ginting Lusi Laura Pasaribu Mahatir Muhammad Mahdi Maimuddin Noor Malau, Leo Rio Ependi Meilita Tryana Sembiring, Meilita Tryana Meutia, Anna Muhammad Jufri Muhammad Khaliqi Muhammad Khaliqi N. Nazaruddin Nadhila Rasyad Siregar Natalie Jessica Regina Surbakti Nazaruddin M Negara, Lubis Satia Nurbaty, Lubis Arlina Prihatin Lumbanraja Qaedina Tio Athira R. B. Moh. Ibrahim Fatoni R. Rambe, Khoiru Rabbani, Ali Rahmanta Rahmanta Ginting Rahmanta Rahmanta, Rahmanta Raimon J R Hutauruk Riantri Barus Rini, Endang Sulystia Rohni A Damanik Ronald Sibuea Rosadi, Arief Fareza Safrizal Safrizal Salmiah Salmiah Sari Br Surbakti, Dian Permata Satia Negara Lubis Satia Negara Lubis Satia Negara Lubis Sepri Ginting Silvia Febrina Lubis Simanjuntak, Chrismasya Rosiana Tamara Sinar Indra Kesuma Sinar Indra Kesuma Siregar, Qurratu Ayuni Siti Khadijah Nasution Siti Nur Arafah Sri Fajar Ayu Sugih Arto Pujangkoro Sugih Harto Pujangkoro Surbakti, Natalie Jessica Regina Suri, Tasha Ningtyas Surya Sevi Wijayanna Tobing Syafrizal Helmi Situmorang Syahfitri, Khofifah Dwi Tanti Novianti Tavi Supriana Tavi Supriana Tavi Supriana Thomson Emalisa Sebayang Titien Indrawati Wahyu Ario Pratomo Wirda Zahra Siregar Yaya Hasanah yeni absah Yessi Claudia Sianipar Yusak Maryunianta Zednita Azriani