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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 10 Documents
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Search results for , issue "Vol. 10 No. 1 (2026): Specta Journal of Technology" : 10 Documents clear
Sistem Monitoring Air Conditioner (AC) Pada Ruang Kelas Institut Teknologi Kalimantan Berbasis Internet of Things (IoT): Sistem Monitoring Air Conditioner (AC) Pada Ruang Kelas Institut Teknologi Kalimantan Berbasis Internet of Things (IoT) Utami, Amalia Rizqi; Hasanah, Barokatun; Firsen, Muhammad Iqbal Sep; Fikri, Ryan
SPECTA Journal of Technology Vol. 10 No. 1 (2026): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v10i1.1018

Abstract

This research discusses the implementation of a monitoring system based on Internet of Things (IoT) technology to monitor air conditioning usage in the form of a website. This system is designed to collect data about air conditioner usage in real time and monitor the on/off conditions of the air conditioner. Several components are used such as the DHT11 module as a temperature sensor which functions to read room temperature, the PZEM- 004t module which functions to read voltage, current and power which operates on AC when it is off or on, the Arduino UNO microcontroller to process input/output data, ESP8266 for connecting to a wi-fi network. In addition, software is used to support the research process such as Arduino to program the Arduino UNO microcontroller, XAMPP to create a database, and Visual Studio Code to create programs on websites. In this study, there are several stages such as analysis of user needs, system design, system testing, data analysis, and conclusions. Then after testing and data collection, the current and power values were obtained when the AC was off, namely 0.4 A and 1.7 Watt – 1.8 Watt. When the AC is on, the current and power values are 1.08 A – 1.19 A and the power is 216.8 Watt – 244.6 Watt.
Analisis Strategi Hedging Risiko Investasi Menggunakan Kontrak Berjangka Indeks LQ45 Dengan Model OLS Dan DCC-GARCH Syavirah, Auliah Juliana; Santoso, Eka Krisna; Indrawan
SPECTA Journal of Technology Vol. 10 No. 1 (2026): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v10i1.8481426

Abstract

Volatility in the LQ45 Index remains a key concern for investors in Indonesia's capital market, underscoring the need for effective risk management strategies. This study investigates the hedging effectiveness of LQ45 index futures by comparing two estimation methods for hedge ratios: Ordinary Least Squares (OLS) and Dynamic Conditional Correlation-GARCH (DCC-GARCH). Using daily return data from 2021 to 2024, the analysis begins with stationarity testing and model diagnostics to ensure validity. Both models are estimated and evaluated based on their fit and statistical robustness. Hedging effectiveness is assessed by comparing portfolio variances before and after hedging, alongside statistical validation using F-tests and t-tests. Results show that both models offer risk reduction, but the DCC-GARCH model outperforms OLS by providing dynamic hedge ratios that better capture market volatility. The DCC-GARCH approach also satisfies all diagnostic criteria, indicating its statistical reliability and robustness. These findings highlight the relevance of dynamic hedging models in volatile markets and provide empirical support for integrating advanced econometric tools in risk management practices. The study contributes to the underexplored literature on index futures in emerging markets and offers valuable insights for policymakers and practitioners aiming to enhance derivative utilization in Indonesia.
Pengelolaan Sumber Daya Air Lokal: Pemanfaatan Mata Air RT 7 Kelurahan Sumber Rejo, Kota Balikpapan Sebagai Alternatif Sumber Air Bersih Berkelanjutan Maulani, Melisa Triandini; Febrianti, Nia; Noor Hayati, Rina; Awaliyah, Lia; Arrohman, Maulana Khafid
SPECTA Journal of Technology Vol. 10 No. 1 (2026): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v10i1.8481503

Abstract

The need for clean water is one of the essential aspects of community life, especially in areas that are not fully served by the PDAM (Regional Drinking Water Company) distribution network. In Sumber Rejo Subdistrict, particularly in RT 7, the availability of clean water remains a major issue due to the hilly topography, making it difficult for the PDAM pipeline network to reach the area. The local community relies on springs as an alternative water source, which is collected manually without a planned distribution system. This study aims to analyze the potential of the spring in RT 7, Sumber Rejo Subdistrict, as a clean water source based on water quality, flow rate classification, and clean water distribution system planning. The methods used include water quality analysis through laboratory tests covering physical, chemical, and microbiological parameters, flow rate classification based on spring discharge measurements, and distribution system planning using EPANET 2.2 software. The results show that the spring water quality does not fully meet the clean water quality standards according to the Indonesian Ministry of Health Regulation Number 2 of 2023 on Environmental Health, particularly for nitrate, manganese, and aluminum parameters. Based on the flow rate measurements, the spring falls into Class VI, with a flow rate ranging from 0.1 to 1 liter per second, indicating low flow capacity and generally only sufficient to meet water needs on a limited scale (less than 1,000 people). In the clean water distribution network simulation, three alternative distribution scenarios were evaluated, with Alternative 2 showing the most optimal results, with flow velocities ranging from 0.31 to 0.46 m/s
OPTIMALISASI UNIT PENGOLAHAN SAMPAH ORGANIK MENGGUNAKAN MAGGOT DI TPA MANGGAR KOTA BALIKPAPAN Noor Hayati, Rina; Basransyah; Chandra S. Rahendaputri; Cut Keumala Banaget; Ismi Khairunnissa Ariani; Putri, Nadya Misdiana; Ayu, Ieke Wulan
SPECTA Journal of Technology Vol. 10 No. 1 (2026): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v10i1.8481642

Abstract

The problem of organic waste management in Balikpapan City is increasing, with a total of 193,038 tons/year, 70.3% of which comes from household waste. One solution implemented at Manggar Municipal Solid Waste (MSW) Landfill in Balikpapan is the processing of organic waste using maggots (BSF larvae). This study aims to analyze the current conditions, analyze the factors influencing waste processing, and formulate strategies for optimizing the processing facility. The methods used include quantitative and qualitative approaches, as well as best practice analysis as a basis for improvement. The research findings highlight several issues, such as the absence of BSF egg weighing, predator disturbances in the fly cages, biopon systems without drainage channels, and the manual process of separating maggots from casings. Optimization was carried out through the redesign of the BSF fly enclosure, improvement, and addition of 21 biopon units, which can produce 35.7 liters of liquid organic fertilizer (POC) and decompose 1,0878 tons of organic waste per cycle, the design of a sieving machine, and the reorganization of the maggot house layout. These efforts are expected to enhance processing efficiency and capacity to 1,0878 tons per cycle, supporting more sustainable and environmentally friendly waste management.
Jeda untuk Produktif: Bagaimana Cyberloafing Membantu Pengemudi Ojek Online Mengelola Stres dan Produktivitas? Alif, Muhammad Ikhsan; Hamijaya, Prasis Damai Nursyam; Satyaninggrat, Luh Made Wisnu; Syabina, Masayu Sitti Nur; Hidayat, Muhammad Afdelpiero; Uturestantix; Agustina, Fitri
SPECTA Journal of Technology Vol. 10 No. 1 (2026): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v10i1.8481648

Abstract

The gig economy exposes online ride-hailing drivers to a precarious work environment characterized by algorithmic control, income uncertainty, and long working hours, leading to significant job stress. This high-pressure context raises a critical research problem: how do these workers manage psychological strain to sustain performance when formal organizational support is absent? Cyberloafing, a behavior with a debated dual role as both a counterproductive act and a recovery tool, emerges as a potential, self-directed coping strategy. This study aims to examine the mediating role of cyberloafing in the relationship between job stress and productivity among online ride-hailing drivers, framed by the Conservation of Resources (COR) theory. A quantitative survey with a cross-sectional design was conducted with 199 drivers, and data were analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM). The results show that job stress has a significant positive effect on cyberloafing (β = 0.29; p ≤ 0.01), which in turn has a significant positive effect on productivity (β = 0.24; p ≤ 0.01). The main finding confirms that cyberloafing acts as a full mediator, revealing that the entire influence of stress on productivity is channeled through this behavior. This re-frames cyberloafing not as a counterproductive act, but as an essential adaptive coping mechanism that helps drivers restore psychological resources under pressure, thereby maintaining productivity in a demanding, autonomous work setting.
The RANCANG BANGUN MODUL ALAT PELATIHAN KESELAMATAN LISTRIK AC/DC DALAM PENCEGAHAN BAHAYA KELISTRIKAN DAN LEDAKAN Anggraini, Novita Lizza; Nibraas N.H, Naufal; Giyantara, Andhika; Wicaksono, Himawan; Isabella, Mayati; Salmawati, Lusia; Ibrahim, Maulana; Sembiring, Tama Riska Br
SPECTA Journal of Technology Vol. 10 No. 1 (2026): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v10i1.8481806

Abstract

Based on Law Number 1 of 1970 concerning Occupational Safety is not only applied in industry, but in all workplaces, it is mandatory to apply Safety and Security (K3), one of which is in education both at school and college levels which have a high risk of danger. The cause of work accidents occurs due to Unsafe Action factors reaching 88% and 10% Unsafe Conditions. Health and Safety Executive data states that 90% of accidents are caused by human error. The purpose of the research is to design AC and DC electrical safety training modules that can be used as practicum media for students in understanding the basic principles of electrical risk control and prevention of explosion hazards due to errors in electrical systems. The engineering and development method is the design and fabrication of training modules, which consist of AC and DC electrical devices, equipped with risk control systems such as automatic circuit breakers, grounding systems, and short circuit protection. The results show that the circuit design consists of 2 circuits, namely AC and DC circuits. The circuits can be separated and can be combined by considering making it easier to carry out practicum and maintenance processes to prevent failures in the system that can cause accidents.
Otomatisasi Pengering Lada Menggunakan Sistem Pengayakan Berbasis Efek Rumah Kaca: Otomatisasi Pengering Lada Menggunakan Sistem Pengayakan Berbasis Efek Rumah Kaca Yuniar, Risty Jayanti; Wicaksono, Himawan; Fiqihiyah, Muhammad Mahdev; Gandarrityaz, Rizcky; Fitri
SPECTA Journal of Technology Vol. 10 No. 1 (2026): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v10i1.8481823

Abstract

The pepper drying process is generally carried out conventionally under inefficient sunlight and is dependent on the weather. This study aims to analyze the performance of an automatic sieving system in a greenhouse-based pepper dryer that uses solar panels as an energy source. The main innovation of this study is the implementation of an automatic sieving mechanism to ensure even heat distribution during the drying process. The system is controlled by an Arduino Uno microcontroller with input from DHT22 sensors for temperature and humidity, and a load cell to detect weight loss of the material. A servo motor is used to move the sieve at certain intervals. Tests were conducted under two conditions, namely with and without automatic sieving, using a 60 W incandescent lamp at an average temperature of 55°C. The results showed that the automatic sieving system accelerated the drying time by up to 1 hour and 30 minutes faster than the static system. 100 grams of wet pepper was successfully dried to 75.88 grams in 7 hours, with a water content reduction of approximately 24%. These results indicate that the automatic sieving system effectively increases heat transfer efficiency and accelerates the drying process without additional external electrical energy.
Penentuan Status Mutu Kualitas Air Sungai Somber Hulu Menggunakan Metode Indeks Pencemaran Basransyah, Basransyah; Rina Noor Hayati; Melisa Triandini Maulani; Defriatno, Mawan Eko
SPECTA Journal of Technology Vol. 10 No. 1 (2026): Specta Journal of Technology
Publisher : LPPM ITK

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

Abstract

Population growth that is not balanced with adequate environmental management can hurt environmental quality. The Somber Hulu River is one of the rivers located in the North Balikpapan District. Some people living around the river directly discharge liquid waste into the river, potentially causing pollution that can disrupt the river ecosystem. One sign of pollution in the Somber Hulu River is characterized by smelly and cloudy river water. The research began by determining the river water sampling point, and then the water samples were tested to determine the pollutant concentration based on the specified parameters. The next stage was determining the water quality status using the Pollution Index (IP) method. The reference water quality standard used the class II river water quality standard based on Government Regulation number 22 of 2021. The purpose of this study was to determine the water quality status in the Somber Hulu River as a basis for decision-making in planning control measures to improve surface water quality. Based on the results of the measurements carried out, it is known that in general the water quality of the Somber Hulu River is moderately polluted with an IP value of 3.87 and lightly polluted with an IP value of 7.05 at point 2, an IP value of 5.37 at point 3, and an IP value of 5.25 at point 4. There needs to be management and control of water pollution sources, such as optimizing the use of septic tanks, carrying out monitoring activities, conducting routine river water quality monitoring, and encouraging community involvement in sustainable river management.
Prioritas Pengembangan Infrastruktur Agropolitan Berdasarkan Persepsi Petani: Analisis Importance–Performance di Kawasan Strategis Produksi Padi Babulu Maryo Inri Pratama; Hidayat, Aditya Alif; Pratomo, Rahmat Aris; Mustofa, Umar; Mardika, M Gilang Indra
SPECTA Journal of Technology Vol. 10 No. 1 (2026): Specta Journal of Technology
Publisher : LPPM ITK

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

Abstract

Babulu District is recognized as the primary rice-growing area in the region of North Penajam Paser Regency. This region is expected to become a food security buffer for the prospective Indonesian capital city (IKN). In spite of the significance and high agricultural potential of the region, agropolitan development in the region is limited by the lack of adequate infrastructures. This study aims to measure the significance levels and performance levels of agropolitan infrastructures in the region of Babulu District through the Importance-Performance Analysis (IPA) tool. Questionnaires and in-depth interviews with farmer groups and key informants are employed as data collection instruments. The findings revealed that irrigation channels and water reservoirs have the largest gaps in terms of importance-performance. This is followed by farm roads, storage facilities, and processing facilities. In contrast, electricity networks, markets, fertilizer kiosks, and extension centers have relatively higher performance levels in comparison to their significance levels. This suggests that a priority should be given to the development of primary infrastructures in agropolitan development in the region
Indonesian Mortality-Based Dual Purpose Life Insurance Premium Model with Multiple Decrement and Interest Rate Sensitivity Siringo Ringo, Aris Pransisco; Zulkatri, Eli; Irsandha, Ahmad Rhandy; Raldie, Brayen Endo; Rumengan, Novia Ramadhany; Desember, Natalie Mawar Desember; Putri, Beby Griselda
SPECTA Journal of Technology Vol. 10 No. 1 (2026): Specta Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v10i1.8481947

Abstract

Endowment life insurance is a product that provides benefits both upon the insured's death and while they remain alive until the end of the contract period. Determining premiums for this product requires a model that can capture multiple types of risk, making the multiple-decrement approach relevant. This study aims to calculate dual-purpose life insurance premiums by considering two causes of termination, namely death and inability to pay (lapse), using Indonesia's TMI 2023 mortality data, the probability of default from the OJK 2025 report, and interest rate sensitivity scenarios. The research methods include compiling life expectancy and active-payment probability tables, determining discount factors based on a deterministic interest rate model across three scenarios (pessimistic, realistic, optimistic), and calculating the present value of benefits and annual premiums for two decrement cases. The results show that premiums are highly sensitive to interest rates. Lower interest rates result in higher premiums, while higher interest rates reduce premiums according to the discount principle. In Case 1 (death) and Case 2 (default), different premium values are obtained due to variations in the decrement probabilities of each risk. Overall, the multiple decrement model proved to provide more accurate calculation results that are in line with the actual risk conditions in Indonesia. This study also identified potential developments by incorporating a stochastic interest rate model and adding other types of decrements to support more comprehensive premium setting for the insurance industry.

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