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INDONESIA
Indonesian Journal of Innovation Studies
Published by Universitas Muhammadiyah Sidoarjo
ISSN : -     EISSN : 25989936     DOI : https://doi.org/10.21070/ijins.v17i
Core Subject : Science, Education, Social, Engineering,
Computer Science & IT Education Engineering Law, Crime, Criminology & Criminal Justice
Indonesian Journal of Innovation Studies (IJINS) is a peer-reviewed journal published by Universitas Muhammadiyah Sidoarjo four times a year. This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.This journal aims is to provide a place for academics and practitioners to publish original research and review articles. The articles basically contains any topics concerning new innovation on all aspects. IJINS is available in online version. Language used in this journal is Indonesia or English.
Arjuna Subject : Umum - Umum
Articles 1,347 Documents
 130   131   132   133   134 
Characteristics of Agar Powder (Gracilaria verrucosa) trough Acid – Base Pre - extraction Rima Azara; Ida Agustini Saidi; Rahmah Utami Budiandari; Syarifa Ramadhani Nurbaya; Lukman Hudi; Sugiarto
Indonesian Journal of Innovation Studies Vol. 25 No. 4 (2024): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v25i4.2381

Abstract

General Background Seaweed represents a vital fishery commodity with extensive applications across the food, pharmaceutical, and cosmetic industries. Specific Background Gracilaria verrucosa, a prominent red algae species, yields agar molecules whose functional characteristics depend heavily on extraction conditions. Knowledge Gap Standard extraction pretreatments utilizing weak acids often fail to maximize agar recovery and functional parameters from algal cell structures. Aims This study evaluates the combination of strong alkali (NaOH) and strong acid (HCl) pretreatments on the physical characteristics of Gracilaria verrucosa agar powder. Results The empirical findings demonstrate that a pretreatment using 7.5% NaOH and 0.040% HCl delivers optimal structural outcomes, recording a yield of 13.82%, gel strength reaching 1032.5 g/cm², viscosity of 18.32 cP, and reduced syneresis at 0.96%. Novelty Synergistic strong acid-base pretreatment replaces traditional weak acid steps, efficiently cleaving sulfate esters while preserving structural polysaccharide integrity. Implications These standardized parameters offer an efficient industrial approach to produce high-grade agar powder meeting commercial standard specifications. Key Findings Highlights Pretreatment with combined strong alkali and strong acid solutions significantly improves physical properties of agar powder. Increasing concentrations of sodium hydroxide and hydrochloric acid reduce syneresis while elevating viscosity and gel strength. The treatment using 7.5% alkali and 0.040% acid concentration yields the highest extraction recovery and optimal structural performance. Keywords : Agar Powder, Gracilaria Verrucosa, Acid-Base Pretreatment, Gel Strength, Extraction Yield
Process of Separating Sugar Crystals by Rotary Centrifugation Principle at Sugar Factory Candi Baru: Proses Pemisahan Kristal Gula dengan Prinsip Sentrifugasi Putar di Pabrik Gula Candi Baru Annisa Fitriya Rokhma; Ida Agustini Saidi; Rahmania Akhairunnisa
Indonesian Journal of Innovation Studies Vol. 25 No. 4 (2024): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v25i4.2382

Abstract

General Background: Industrial white crystal sugar manufacturing relies on precise separation techniques to secure high sucrose purity and yield. Specific Background: At PT Pabrik Gula Candi Baru Sidoarjo, the centrifugation station separates sugar crystals from surrounding molasses across various boiling grades. Knowledge Gap: However, systematic evaluations linking operational parameters of high-grade and low-grade centrifugals to specific crystal fraction recovery in continuous factory operations remain limited. Aims: This study evaluates the rotary centrifugation mechanism, processing streams for A, C, and D massecuites, and quality control steps during crystal separation. Results: The process utilizes high-grade centrifugals operating at 1,000 rpm for A and B sugars alongside low-grade centrifugals running at 2,500 rpm for D1 and D2 massecuites. Thermal control below 30°C prior to packaging prevents physical aggregation and moisture retention in the final Superior Hooft Suiker product. Novelty: This work provides an operational mapping of multi-stage centrifugation parameters directly integrated with cooling trough retention times for optimal sucrose recovery. Implications: Implementing structured centrifugal speed allocations and strict thermal boundaries offers sugar processing plants a reliable framework to preserve crystal uniformity, reduce raw material waste, and improve overall factory throughput. Key Findings Highlights High-grade centrifugals at 1,000 rpm separate A and B massecuites, whereas low-grade units at 2,500 rpm handle D-grade sugar streams. Multi-stage crystallization combined with controlled rapid cooling at 54–55°C optimizes sucrose crystal recovery from molasses. Post-separation cooling to temperatures below 30°C prior to bagging prevents sucrose degradation and crystal agglomeration. Keywords : Candi Baru Sugar Factory, Centrifugal Separation, White Crystal Sugar, Massecuite Boiling, Sugar Quality Standards
Forecasting the Demand for Fast-Moving Spare Parts Using the Autoregressive Integrated Moving Average (ARIMA) Method: Peramalan Permintaan Sparepart Kategori Fast Moving Menggunakan Metode Autoregressive Integrated Moving Average (ARIMA) Meirani Id’ha Khusainiah; Tedjo Sukmono
Indonesian Journal of Innovation Studies Vol. 25 No. 4 (2024): October
Publisher : Universitas Muhammadiyah Sidoarjo

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

Abstract

General Background Modern agricultural machinery distribution centers face significant operational hurdles in maintaining continuous supply chains. Specific Background At the central warehouse of PT Corin Mulia Gemilang (MAXXI) in Sidoarjo, stockouts of fast-moving spare parts such as bimo oil seal rollers directly disrupt production lines and delay distribution to regional branches. Knowledge Gap Although classification systems categorize inventory movement, conventional replenishment models frequently fail to account for stochastic demand trends in agricultural machine components. Aims This study evaluates dynamic time-series modeling to forecast monthly demand for bimo oil seal roller components from August to December 2024 using historical records spanning January 2022 to July 2024. Results Application of the Box-Jenkins methodology demonstrated that data achieved variance and mean stationarity following third-order power transformations and first-order differencing, establishing ARIMA(2,1,0) as the optimal predictive structure with the lowest Mean Square Error of 73.672. Forecasted demand for the five-month horizon yields 934 units in August, 909 units in September, 887 units in October, 914 units in November, and 906 units in December 2024. Novelty The research demonstrates that time-series modeling effectively captures non-stationary, stochastic demand patterns specifically tailored to agricultural spare part warehouse logistics without relying on exogenous variables. Implications Implementing ARIMA-based forecasting enables warehouse managers to prevent inventory shortages, optimize safety stock levels, and preserve customer satisfaction across national distribution channels. Key Findings Highlights The ARIMA(2,1,0) model was identified as the optimal time-series model for predicting bimo oil seal roller requirements due to achieving the lowest Mean Square Error of 73.672. Demands for fast-moving agricultural components exhibit stochastic trend behaviors that require first-order differencing and power transformation to achieve statistical stationarity. Monthly demand projections for August through December 2024 remain relatively steady within the range of 887 to 934 units, indicating time-independent fluctuations. Keywords : Arima Model, Spare Parts, Inventory Forecasting, Warehouse Logistics, Fast Moving Items
Analysis of the Production Process of Rujak Ulek Seasoning Typical of Paciran Produced by UMKM Rizqi Paciran Lamongan: Analisis Proses Produksi Bumbu Rujak Ulek Khas Paciran yang Diproduksi Oleh UMKM Rizqi Paciran Lamongan M. Falih Abdilah; Rima Azara
Indonesian Journal of Innovation Studies Vol. 25 No. 4 (2024): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v25i4.2384

Abstract

General Background Micro, Small, and Medium Enterprises (MSMEs) in the food sector drive local economic growth, expand market access, and generate community employment. Specific Background In Lamongan, Indonesia, MSME Bumbu Rujak Ulek Rizqi processes traditional Paciran rujak seasoning made from palm sugar, chili, salt, shrimp paste, and tamarind. Knowledge Gap However, practical evaluations of traditional manual processing combined with modern hermetic cup sealing for small-scale culinary operations remain limited. Aims This study evaluates the production workflow, legal compliance, and distribution framework of MSME Bumbu Rujak Ulek Rizqi. Results Findings indicate that the enterprise satisfies regulatory standards via Business Identification Number (NIB) and Household Industrial Food (P-IRT) permits, operates a dual-stage manual grinding process using stone mortars to maintain authentic flavor profiles, and employs airtight press packaging to achieve a shelf life of one week at ambient temperature and six months under refrigeration. Novelty This study demonstrates how traditional mortar-based grinding techniques integrated with airtight cup-sealing methods allow micro-enterprises to preserve regional food identity while scaling output up to 8 kg every two days. Implications Consequently, integrating standardized legal registration, controlled manual processing, and airtight packaging offers a viable model for local food producers to expand market reach through e-commerce and digital channels. Key Findings Highlights Full regulatory compliance with NIB and P-IRT permits strengthens product credibility and expands market access. A dual-stage traditional mortar grinding process preserves authentic regional flavor profiles while ensuring uniform ingredient distribution. Airtight cup-press packaging extends product durability to one week at room temperature and six months under refrigeration without synthetic preservatives. Keywords Airtight Packaging, Food Processing, Micro Enterprises, Traditional Seasoning, Product Quality
Analysis of Potential Risks and Work Accidents Using HIRARC Method: a Warehouse Transit Case Study of PT. Corin Mulia Gemilang: Analisis Potensi Risiko dan Kecelakaan Kerja Menggunakan Metode HIRARC: Studi Kasus Warehouse Transit PT. Corin Mulia Gemilang Ahmad Ken Mada; Ribangun Bambang Jakaria
Indonesian Journal of Innovation Studies Vol. 25 No. 4 (2024): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v25i4.2386

Abstract

General Background Occupational health and safety management serves as a critical foundation for operational continuity and workforce protection in industrial logistics environments. Specific Background In spare part transit warehouses, manual handling and material logistics frequently present severe physical hazards to warehouse personnel. Knowledge Gap Although hazard evaluation tools are widely recognized, systematic evaluations focusing on spare part transit hub operational workflows remain insufficiently documented. Aims This study evaluates occupational safety risks and formulates targeted risk mitigation strategies within a transit warehouse setting. Results Evaluating 22 identified operational hazard risks via the Hazard Identification, Risk Assessment, and Risk Control framework revealed 18 low-risk occurrences and 4 moderate-risk conditions, primarily involving respiratory discomfort, cut injuries, muscle strain, and hand pinching during spare part handling. Novelty A targeted risk control framework specifically tailored to spare part transit logistics operations is established. Implications Implementing structured engineering controls, administrative protocols, and personal protective equipment provides a practical blueprint to minimize workplace accidents and improve operational safety compliance in logistics transit facilities. Key Findings Highlights Operational hazard evaluation across transit warehouse activities identified 22 potential risk points, with 18 categorized as low risk and 4 as moderate risk. Moderate-risk hazards primarily stem from manual spare part handling, leading to respiratory issues, physical cuts, muscle strain, and pinching injuries. Mitigation strategies combining engineering modifications, administrative procedures, and proper safety equipment effectively diminish operational workplace hazards. Keywords Risk Control, HIRARC, Occupational Health And Safety, Transit Warehouse, Hazard Identification
Determination of the HK Value (Purity Value) of D2 Sugar After the First Cooking Process of Sulfurized Thick Nira at PG Candi Baru: Penentuan Nilai HK (Harkat Kemurnian) Pada Gula D2 Setelah Proses Pemasakan Pertama Nira Kental Tersulfitir di PG Candi Baru Muhammad Aji Santoso; Al Machfudz; Rahmaniah Akhirunnisa
Indonesian Journal of Innovation Studies Vol. 25 No. 4 (2024): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v25i4.2387

Abstract

General Background Sugar processing industries require stringent quality control parameters to optimize sucrose recovery during crystallization phases. Specific Background In sugar mills, determining the purity value (%HK) of intermediate massecuite products like D2 sugar from sulfurized thick juice is vital for process efficiency. Knowledge Gap Although purity evaluation protocols exist, practical analytical assessments of D2 sugar purity after initial cooking under factory conditions need clearer operational clarification. Aims This study evaluates the %HK value of D2 sugar derived from sulfurized thick juice to determine its suitability for subsequent crystallization stages. Results Observational and quantitative analysis through corrected %Brix and %Pol measurements revealed that D2 sugar achieved a %HK exceeding 90%. Novelty The findings establish precise purity parameters confirming D2 sugar as an optimal primary raw material for C sugar cooking. Implications Ensuring accurate %HK measurement enables sugar processing facilities to reduce sucrose losses in final molasses and maintain high-grade sugar crystal output. Key Findings Highlights Quantitative evaluation confirmed that D2 sugar achieves a high purity value exceeding 90% after initial cooking. Calculation of purity value relies on temperature-corrected percentage Brix and percentage Pol analytical steps. High purity enables D2 sugar to serve directly as the primary cooking material for C sugar production. Keywords Sugar Purity, D2 Sugar, Cooking Process, Brix Correction, Pol Value
Implementation of UI/UX Design and Front-end Development on Web-Based Audit System at PT Aneka Coffee Industry: Implementasi Desain UI/UX dan Pengembangan Front-end pada Sistem Audit Berbasis Web di PT Aneka Coffee Industry Yurida Zani; Suprianto
Indonesian Journal of Innovation Studies Vol. 25 No. 4 (2024): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v25i4.2388

Abstract

General Background Internal auditing plays a pivotal role in maintaining operational transparency and compliance within the modern coffee manufacturing industry. Specific Background PT Aneka Coffee Industry relies on manual audit mechanisms that create operational bottlenecks, elevate record-keeping errors, and delay managerial reporting. Knowledge Gap While digital audit platforms exist, practical implementations frequently neglect user-centric UI/UX design and responsive cross-device adaptability essential for diverse workplace literacies. Aims This study designs and deploys a web-based internal audit system featuring intuitive user interfaces, responsive front-end architecture, and role-based security controls. Results Cross-platform evaluations confirm that the digital platform streamlines data retrieval, cutting report search and generation duration by 50% compared to conventional paper-based workflows. Novelty The system integrates Figma-driven usability prototyping, Bootstrap responsive grid structures, and secure bcrypt password encryption alongside Role-Based Access Control to ensure seamless mobile and desktop operation. Implications Digitizing internal audit protocols accelerates executive decision-making, mitigates data vulnerability, and provides a scalable framework adaptable to industrial quality management systems. Key Findings Highlights Web-based automation decreases audit report retrieval time by half relative to manual workflows. Responsive front-end layouts enable reliable cross-device functionality across mobile and desktop environments. Role-Based Access Control integrated with encrypted authentication prevents unauthorized data access. Keywords Web-Based Audit System, Internal Audit Automation, UI/UX Design, Responsive Front-End, Role-Based Access Control
Optimization Of The Process Of Inputting Official Travel Orders (Sppd) Through An Application With A User Friendly Interface In Bpvp Sidoarjo (Case Study : Front-End Design): Optimalisasi Proses Penginputan Surat Perintah Perjalanan Dinas (Sppd) Melalui Aplikasi Dengan Antarmuka Ramah Pengguna Di Bpvp Sidoarjo (Studi Kasus : Perancangan Front-End) Irwan Alnarus Kautsar; Gilang Dwi Anggoro
Indonesian Journal of Innovation Studies Vol. 25 No. 4 (2024): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v25i4.2390

Abstract

General Background Public institutions rely heavily on official travel orders (SPPD) to manage administrative assignments and ensure operational accountability. Specific Background At BPVP Sidoarjo, the processing and generation of SPPD documents currently depend on manual data entry using Microsoft Excel. Knowledge Gap This manual approach leads to frequent typographical errors, lengthy data processing times, visual unattractiveness, and limited accessibility across mobile or tablet environments. Aims This study designs and optimizes a responsive web-based application front-end leveraging the Vue.js framework to streamline the SPPD input process. Results The system digitizes forms, automates report previews, supports multiple devices, and integrates modules for delegating tasks, managing payment orders (SPM), and generating official receipts. Novelty By implementing a structured front-end architecture using Vue.js combined with role authentication, the research transforms a spreadsheet-bound administrative workflow into a fully responsive, intuitive web interface specifically tailored for vocational training centers. Implications This system substantially improves administrative efficiency, reduces processing errors, and supports digital transformation goals within public sector institutions. Key Findings Highlights Web-based front-end digitization replaces manual spreadsheet entry to reduce input errors and speed up processing. Responsive interface development using Vue.js ensures smooth administrative workflows across smartphones, tablets, and desktop computers. Automated document modules seamlessly integrate travel delegation, payment orders, and receipt generation into printable official PDF forms. Keywords Front-End Design, Interface Optimization, Official Travel Orders, Responsive Web Application, Vue Framework
Analysis Of Indo Paket Customer Satisfaction Using Service Quality Method And Root Cause Analysis: Analisis Kepuasan Pelanggan Indo Paket Dengan Menggunakan Metode Service Quality Dan Root Cause Analysis Putra Setyo Pamuji; Wiwik Sulistiyowati
Indonesian Journal of Innovation Studies Vol. 25 No. 4 (2024): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v25i4.2391

Abstract

General Background Logistics and courier services have become essential supporting elements for business activities and daily public transactions. Specific Background Indo Paket, an established Indonesian freight delivery company operating since 2016, faces operational hurdles indicated by customer complaints regarding sub-optimal service, missing cargo, and insufficient security protocols. Knowledge Gap Existing studies on logistics evaluations rarely integrate operational service quality gaps directly with systemic root cause diagnostic frameworks to trace employee-level service failures. Aims This study evaluates service performance by integrating Service Quality (Servqual) and Root Cause Analysis (RCA) to identify key negative gap attributes and determine fundamental operational causes. Results Empirical analysis reveals that negative service gaps are heavily concentrated in Empathy and Assurance dimensions, specifically employee communication and attentiveness (-0.0167), employee product knowledge (-0.0122), and safety equipment availability (-0.0081). RCA further demonstrates that these weaknesses stem from a lack of structured communication training, inadequate feedback collection systems, and missing safety budget prioritizations. Novelty The investigation establishes a dual-framework methodology that bridges perceived service deficiencies directly to root managerial and training deficits in freight logistics. Implications Logistics management must implement structured employee training programs, establish clear standard operating procedures, and execute routine evaluations to eliminate service gaps and improve long-term user satisfaction. Key Findings Highlights Empathy attributes exhibited the highest negative quality gaps, particularly in employee communication and attentiveness toward service users. Root cause analysis identified the absence of structured training programs and feedback collection mechanisms as fundamental drivers of service failures. Strategic interventions require formal employee training, standardized problem-solving procedures, and continuous performance evaluations. Keywords Customer Satisfaction, Logistics Service Quality, Root Cause Analysis, Servqual Integration, Shipping Service Evaluation
Application of Forecasting Techniques on Sugar Product Sales at PT. PG Candi Baru: Penerapan Teknik Peramalan (Forecasting) Pada Penjualan Produk Gula di PT. PG Candi Baru Moch Rio Firmansyah; Atikha Sidhi Cahyana
Indonesian Journal of Innovation Studies Vol. 25 No. 4 (2024): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v25i4.2392

Abstract

General Background Sugar represents an essential commodity supporting public food security and industrial production in Indonesia. Specific Background PT. PG Candi Baru faces annual sales fluctuations of SHS 1 sugar, where inaccurate sales estimation risks increasing production expenditures and diminishing investment efficiency. Knowledge Gap Comparative sales prediction models utilizing empirical historical data remain underanalyzed for operational planning in regional sugar manufacturing plants. Aims This study evaluates and compares the accuracy of the Moving Average and Naive methods to determine the most precise forecasting model for sugar sales. Results Quantitative evaluation via POM QM for Windows demonstrates that the 6-year Moving Average yields lower error rates, with Mean Absolute Deviation (MAD) of 1.726, Mean Squared Error (MSE) of 5.661, and Mean Absolute Percentage Error (MAPE) of 8.45%, projecting subsequent annual sales at 21,781 tons. Novelty The investigation provides an empirical performance baseline directly contrasting time-series smoothing against naive baseline projections within a state-affiliated sugar refinery setting. Implications Adopting the Moving Average approach enables management to execute precise operational planning and mitigate financial risks associated with supply-demand imbalances. Key Findings Highlights The 6-year Moving Average method delivered higher accuracy than the Naive method, recording lower error metrics across MAD, MSE, and MAPE. The projected annual sugar product sales for the upcoming period at PT. PG Candi Baru reaches 21,781 tons. Incorporating time-series forecasting metrics provides strategic support for production planning and operational cost control. Keywords Forecasting, Moving Average, Naive Method, Sales Prediction, Sugar Industry

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