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Specta Journal of Technology
Published by Institut Teknologi Kalimantan
ISSN : 25492713     EISSN : 26229099     DOI : https://doi.org/10.0610/specta.v2i3
Core Subject : Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Environmental Science
SPECTA journal is published by Lembaga Penelitian dan Pengabdian kepada Masyarakat, Institut Teknologi Kalimantan, Balikpapann Indonesia. SPECTA is an open-access peer reviewed journal that mediates the dissemination of academicians, researchers, and practitioners in the field of Physics, Mathematics, Mechanical Engineering, Electrical Engineering, Chemical Engineering, Materials and Metallurgy, Civil Engineering, Industrial Engineering, Naval Engineering, Urban Planning, Informatics, Information System, Environmental Engineering, and Ocean Engineering. SPECTA accepts submission from all over the world, especially from Indonesia.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 325 Documents
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Pemanfaatan Hasil Biokonversi Limbah Organik sebagai Pupuk Organik Cair untuk Pertumbuhan Tanaman Miana Noor Hayati, Rina; Chandra S. Rahendaputri; Ariani, Ismi Khairunnissa; Dellangi, Inri Lestari
SPECTA Journal of Technology Vol. 9 No. 1 (2025): Vol. 9 No. 1 (2025): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i1.1215

Abstract

Efforts to reduce organic waste can be done by recycling waste through utilization into liquid organic fertilizer. One of the efforts to process organic waste can be done by Black Soldier Fly (BSF) maggot. This study was conducted with the aim of seeing the ability of liquid organic fertilizer (POC) produced from leachate from bioconversion carried out by BSF, on the growth of miana plants (Plectranthus scutellarioides). This research is an experiment with qualitative and quantitative data analysis methods. The research was conducted by giving two different POCs. Sample A used 100% commercial organic fertilizer and sample D used POC with a ratio of bioconverted organic fertilizer to commercial liquid fertilizer (3:1). Both samples still could not meet the quality standards of nutrients (NPK) and C-organic. However, the sample with the ratio of bioconverted organic fertilizer and commercial liquid organic fertilizer (3:1) or sample D is the optimum sample, with nutrients (NPK) reaching 0.438% and C-organic reaching 4.58%. The results of the application proved that plants with sample D showed the best growth in terms of the number of leaves that reached 14 strands and plant height reached 13 cm in week 8.
Analisis Manajemen Risiko Berbasis ISO 31000 pada Studi Kasus Hotel Jakarta di Balikpapan Reza Fahlevi, Mohammad; Rahmawati, Febri; Mira Detavia, Andi; Vaneza Sihaloho, Julice; Fadillah, Nur; Lolo Padang, Elifas; Deny Arthawan Sugih Prabowo, I Putu
SPECTA Journal of Technology Vol. 9 No. 1 (2025): Vol. 9 No. 1 (2025): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i1.1324

Abstract

The study aims to analyze the implementation of ISO 31000-based risk management at Jakarta Hotel in Balikpapan which faces various challenges in its operations. Risk management is an important component in undergoing the sustainability of hotel operations, especially in the hospitality sector which is faced with economic, regulatory, and reputational risks. A structured risk management approach is needed to mitigate those risks and ensure the hotel can operate optimally. SWOT and PESTLE analysis are the research methods used in understanding the internal and external conditions of Hotel Jakarta, which are then followed by the ISO 31000-based risk management process, namely risk identification, risk analysis, risk evaluation, and risk treatment. The results show that Hotel Jakarta faces various risks, including operational risks related to the lack of digitalization, economic risks due to cash flow instability, and reputational risks caused by negligence in guest services. The proposed mitigation strategies include digitizing the hotel's management system, collaborating with external partners, and improving employee training and competency. The implementation of ISO 31000-based risk management helps the hotel in minimizing the negative impact of risks and improving readiness in facing future challenges. Overall, this study confirms the importance of implementing a structured risk management framework to improve operational sustainability and customer satisfaction.
A Konsistensi Desain Infrastruktur sebagai Kunci Ibu Kota Nusantara yang Terintegrasi dan Berkelanjutan Dananjaya, Ahmad Ghazy
SPECTA Journal of Technology Vol. 9 No. 1 (2025): Vol. 9 No. 1 (2025): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i1.1342

Abstract

The development of infrastructure in Indonesia, especially in the National Capital City (IKN), requires integrated and sustainable design. The use of smart technology and data-based management systems is a key innovation to optimize urban infrastructure, making it more efficient and responsive to urban environmental changes (30%). This technology enables a more efficient planning and management process, which in turn improves the quality of life for city residents by enhancing energy efficiency, reducing carbon footprints, and improving public services. Based on analysis, the application of smart technology shows significant improvements: energy efficiency increased by 25%, carbon footprint reduction by 25%, public service quality increased by 20%, and natural resource management improved by 25% (25%). This approach aligns with the theory of Koens, Postma, & Papp (2018), which states that cities are multifunctional and complex environments, where the increasing number of visitors can put pressure on existing resources. Additionally, the principle of sustainability, covering social, economic, and environmental aspects, is also a primary focus of this study, in line with the views of Langle-Flores et al. (2025), emphasizing the importance of polycentric governance systems for achieving sustainable policy agreements. This research provides an overview of the critical role of technology and governance in creating cities that are more inclusive and responsive to global changes, such as climate change and rapid urbanization (20%). The study recommends the importance of policies that support the integration of technology and sustainability principles in future city planning, as well as the need for coordination between stakeholders to achieve a balance between development and the preservation of limited natural resources.
Transformasi Jajanan Tradisional: Strategi Pengembangan Produk Ongol-Ongol Berbasis Konsumen di Industri X, Gianyar Jannati, Fitri Nur; Gede Wahyu Wardana; Dewa Ayu Anom Yuarini; Cokorda Anom Bayu Sadyasmara
SPECTA Journal of Technology Vol. 9 No. 1 (2025): Vol. 9 No. 1 (2025): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i1.1345

Abstract

Bali is renowned not only for its natural attractions but also as a culinary tourism destination rich in traditional foods. Gianyar Regency, a pioneer in gastronomic tourism, features ongol-ongol as a signature local product. Culinary enterprise X has produced ongol-ongol using traditional methods and inherited recipes since 2019. However, increasing competition led to a 15% monthly decline in sales during 2022–2023. This study aims to analyze consumer satisfaction to support market-oriented product development using the Quality Function Deployment (QFD) method. Data were collected from 94 respondents through a questionnaire evaluating seven product attributes: color, aroma, taste, texture, shape, size, and portion. Findings show that taste, portion size, texture, and aroma are considered the most important by consumers. Comparative analysis with competitors reveals that only the portion size attribute meets the satisfaction level of competitor products. Improvement ratio analysis indicates that none of the attributes have reached the desired satisfaction targets. Based on consumer perspectives, the priority for attribute improvement is as follows: aroma, taste, texture, color, shape, size, and portion. Key technical aspects requiring improvement include raw material preparation, dough mixing, and steaming processes. Recommended strategies for Enterprise X include: (1) implementing a grading system for cassava based on size, color, and ripeness; (2) adopting labeling to ensure raw material quality; (3) developing Standard Operating Procedures (SOPs) for dough mixing with clear ratios and timing; and (4) standardizing steaming procedures with specific time and temperature controls. These strategies aim to enhance product quality consistency and align with consumer expectations.
Application of Behavior-Based Safety to Reduce Unsafe Actions in Preventive Maintenance Work Using the JSA and DO IT Methods Aura Irsyaf Putri; Nur, Muhammad; Hartati, Misra; Anwardi; Hadiyul Umam, M. Isnaini
SPECTA Journal of Technology Vol. 9 No. 1 (2025): Vol. 9 No. 1 (2025): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i1.8481339

Abstract

The rapid development of Information and Communication Technology (ICT) in Indonesia has increased the demand for reliable network and telecommunication services. This situation has led to a rise in Preventive Maintenance (PM) activities, which carry high risks of workplace accidents. PT. XYZ is a company operating in the network and telecommunications sector, where PM tasks such as fiber optic cable repairs, cable pulling, joint box lowering, and cable installation repairs are carried out in areas with high potential hazards, including working at heights and near electrical installations. This study aims to reduce unsafe actions during PM activities by implementing the Job Safety Analysis (JSA) method and the DO IT (Define, Observe, Intervene, and Test) approach within the Behavior Based Safety (BBS) framework. The research was conducted using field observations, interviews with workers, and accident data collected from 2023. The results show that unsafe behaviors, such as improper use of personal protective equipment (PPE) and failure to follow standard procedures, still frequently occur. Through the DO IT stages—define, observe, intervene, and test—workers’ awareness of occupational safety increased. The implementation of JSA and DO IT proved effective in identifying potential hazards and designing appropriate interventions to prevent workplace accidents. This study provides recommendations for the company to enhance its occupational health and safety (OHS) management system to create a safer and more productive work environment.
The Analisis Hubungan antara Dimensi Big Five Personality dengan Riwayat Kecelakaan Truk antar Provinsi Anggraini, Novita Lizza; Malik, Anis Rohmana; Anwar, Putri Gesan Prabawa; Fadana, Irfan Andri; Jingga, Dinar Padang Mutiara; Ramadhani, Tyas Ayu
SPECTA Journal of Technology Vol. 9 No. 2 (2025): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i2.1216

Abstract

Based on data from the National Transportation Safety Committee, traffic accidents involving trucks in East Kalimantan resulted in four fatalities, one serious injury, and 29 minor injuries. This study aims to determine the relationship between working hours, rest periods, and personality dimensions through the Big Five Personality theory with the accident history of inter-provincial truck drivers. The study uses an analytical design with a cross-sectional approach. The research subjects are truck drivers selected using purposive sampling techniques, with a sample size of 30 for the Big Five Personality measurements and 15 truck units for vibration measurements. This is a quantitative study. The results show that there is no significant relationship between respondent characteristics, such as age, education, work duration, and length of service, and the history of work accidents. Vibration measurements indicate that 12 out of 15 truck units operated by drivers have vibration levels above the threshold limit value (TLV), which is 0.8660 during an 8-hour exposure period.
Menyelaraskan Aspirasi Pembeli Rumah Pertama Kali Kelas Menengah dengan Persepsi Pemangku Kepentingan Studi Komprehensif di Balikpapan Utara Maryo Inri Pratama; Hosana, Rut Nauli; Satyaninggrat, Luh Made Wisnu; Pratomo, Rahmat Aris
SPECTA Journal of Technology Vol. 9 No. 2 (2025): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i2.1219

Abstract

North Balikpapan District faces significant challenges in housing planning due to population growth and the announcement of the new capital city (IKN) development in East Kalimantan. Achieving optimal housing provision requires synchronization between community preferences and stakeholder perceptions. This study aims to identify the priority gaps between both parties in housing selection. The Analytical Hierarchy Process (AHP) method was used to analyze community preferences, and interviews were conducted with four key stakeholders: the government, subsidized housing developers, commercial housing developers, and the housing developer association. Secondary data were sourced from a previous study that involved a community questionnaire. The results reveal significant differences in priorities: the community prioritizes availability of facilities and infrastructure, accessibility, and environmental comfort, while stakeholders emphasize financing and house design and quality. These misalignments may affect community satisfaction regarding their living environment and access to public facilities. The implications of this study highlight the importance of policy synchronization between the government and developers to bridge this gap, ensuring more inclusive and sustainable housing development in line with the evolving needs of the community. The model derived from this study can be applied to regions experiencing rapid growth, where the majority of the population is of productive age and falls into the middle-income category, to better meet the needs of the growing population.
State Of Charge Estimation on Lithium ION Batteries Using Quantum Neural Network Situmorang, Raftonado; Dewanto, Muhammad Ridho; Hasanah, Barokatun; Deliasgarin, Kholiq; Oktafian, Bagus Gilang
SPECTA Journal of Technology Vol. 9 No. 2 (2025): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i2.1305

Abstract

Battery applications can be found in electric vehicles, renewable energy power plants and various other portable devices. In this final project research, the author uses the Quantum Neural Network (QNN) method to estimate the State of Charge (SoC) on a lithium-ion battery designed using PYTHON. This research includes the design of a prototype SoC estimation system on lithium-ion batteries using the QNN method, real-time SoC data collection, and comparison of SoC estimation performance using QNN with real-time data. The results of real-time testing of lithium-ion batteries using ACS712 voltage and current sensors for five cycles show the following voltage results: first cycle 10.70 V to 12.68 V, second cycle 10.56 V to 12.66 V, third cycle 10.60 V to 12.69 V, fourth cycle 10.60 V to 12.00 V, and the fifth cycle 10.41 V to 12.07 V. Meanwhile, the current sensor results for five cycles showed a range of 0.1 A to 0.5 A. Each test result per cycle showed a higher increase, although there were small fluctuations, and the overall trend line showed the consistency of the voltage sensor's performance without significant degradation during repeated tests, indicating good stability of the voltage sensor. Then, methods with qubit rotation, linear entanglement, and Neural Network were tested. SoC prediction results using QNN with qubit rotation showed MAPE and RMSE values of 0.14 and 61%, respectively. Furthermore, testing the SoC prediction results on QNN with linear entanglement shows MAPE and RMSE values of 0.08 and 29%, respectively. While the SoC prediction results.
EVOLUTION OF RESEARCH AND COMMUNITY SERVICE INFORMATION SYSTEM (SIMPAS LPPM) INSTITUT TEKNOLOGI KALIMANTANKALIMANTAN INSTITUTE OF TECHNOLOGY Azhar, Nur Fajri; Nugroho , Bowo; Alfani Putera, M. Ihsan; Kairupan, Muhammad Nasa'i; Ramadhana, Rizky Irswanda
SPECTA Journal of Technology Vol. 9 No. 2 (2025): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v9i2.1309

Abstract

The Research and Community Service Information System (SIMPAS) at the Institute for Research and Community Service (LPPM) of the Kalimantan Institute of Technology (ITK) has evolved since it was introduced in 2018 to improve efficiency and transparency in managing research and community service activities. This research focuses on the development of SIMPAS through technical updates and the addition of features to meet increasingly complex user needs. This evolution includes updating the system environment using the latest version of Laravel, database refactoring to simplify data processing, and adding features such as account registration using Google email and more flexible user role management. This research uses the Scrum methodology in system development, which allows for continuous improvement and focuses on collaboration between teams. The results of this research are expected to optimize the main business functions of LPPM ITK in the process of submitting proposals, selection, to reporting research and community service results, which in turn supports the achievement of the Tri Dharma of Higher Education and regional development. This research also discusses the integration of the system with other related platforms, as well as the potential use of modern technology to support operational security and efficiency.
Model Regresi Linier Sederhana untuk Timbulan Sampah pada 14 Kecamatan di Kabupaten Rembang misbakhul, muhammad; Yusianto, Rindra
SPECTA Journal of Technology Vol. 9 No. 2 (2025): Specta Journal of Technology
Publisher : LPPM ITK

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

Abstract

Waste has become a complex and global issue, faced by countries around the world, including Indonesia, regardless of their developmental status. The increasing population in Rembang Regency each year results in a rise in waste production. Since the increase in waste volume is not proportional to consumption, it is necessary to categorize and predict the amount of waste generated across 14 sub-districts. The simple linear regression method has shown good predictive capabilities.The objective of this research is to study the concepts, analyze waste management, develop linear regression models, and evaluate waste generation results. Evaluation results for estimation indicate that the first rank is in Rembang Sub-district with a waste generation amount of 68,398 tons and an increase of 1,063 tons over five years. The second rank is in Sedan Sub-district with a waste generation amount of 43,690 tons and an increase of 877 tons over five years. The third rank is in Kragan Sub-district with a waste generation amount of 49,744 tons and an increase of 805 tons over five years.Based on predictions for the population and waste generation from 2024 to 2028, considering the factors of waste generation and the main factor of increased waste. In this case, the average population increase will be used to estimate the population over the next five years, leading to predictions for population and waste generation from 2024 to 2028. The top three sub-districts with the highest increases in waste are Rembang Sub-district, Sedan Sub-district, and Kragan Sub-district. Therefore, several recommendations can be provided to address the waste generation issues in Rembang Regency.

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