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All Journal Tadris: Jurnal keguruan dan Ilmu Tarbiyah JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Indonesian Journal of Science and Technology Al-Jabar : Jurnal Pendidikan Matematika International Journal of Electronics and Communications Systems International Journal of Hydrological and Environmental for Sustainability International Journal of Applied Mathematics, Sciences, and Technology for National Defense
Palupi, Endah Kinarya
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Environmental Science Mathematics Physics

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Optimization and Interpretation of Heat Distribution in Sterilization Room Using Convection Pipe Abdurrahman, Abdurrahman; Umam, Rofiqul; Irzaman, Irzaman; Palupi, Endah Kinarya; Saregar, Antomi; Syazali, Muhamad; Junaidi, Rahmad; Wahyudianto, Benny; Adi, Langit Cahya
Indonesian Journal of Science and Technology Vol 4, No 2 (2019): IJOST: VOLUME 4, ISSUE 2, 2019
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v4i2.18177

Abstract

In mushroom cultivation of white oyster mushroom (P. ostreatus), problems in the contamination during the production are typically found. This contamination is due to the issue in controlling temperature during the media sterilization for growing the fungus (bag-log). This suboptimal sterilization causes unwanted bacteria and spores to grow. To reduce the amount of contamination, the purpose of this study was to demonstrate and evaluate the temperature distribution using one convection pipe with diameter of 6 and 8 cm. The fuel used for this sterilization process is rice husk. Sterilization itself aims to kill other unwanted bacteria and spores on the bag-log. Sterilization was done by traditional steaming bag-log drums arranged in four rows upwards for 6 hours. Convection pipes were built in drums. The steamer was done by performing two retrievals of data. From the experiment results, the use of convection pipe of 8 cm was better than the convection pipe of 6 cm. This is shown from the amount of fungal contamination in convection pipes were less in 8. The result of temperature measurement using dual laser infrared thermometer was also completed and interpreted using Matrix Laboratory with interpolation method to get heat distribution result.
Bayesian Spatial Modeling of Landslide Events Using Integrated Nested Laplace Approximation (INLA): A Study Case on Natural Conditions and Community Actions in East Java, Indonesia Alfarisi, Salman; Christina, Athalia; Naqiya, Sadiyana Yaqutna; Rachmawati, Ro'fah Nur; Machmud, Amir; Palupi, Endah Kinarya
International Journal of Hydrological and Environmental for Sustainability Vol 2, No 3 (2023): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v2i3.354

Abstract

Bayesian Spatial Modeling Using Integrated Nested Laplace Approximation (INLA) is an advanced statistical technique that can be used to model and analyze occurrences in geographic areas. Landslides are one of natural disasters that occur due to natural and human factors and pose a serious threat to East Java Province which has complex natural conditions. The disaster brings various losses, including economic, infrastructural, human life, and environmental. This study investigates the factors contributing to landslides across 29 districts and 9 cities in East Java, Indonesia, using spatial regression modeling by Integrated Nested Laplace Approximation (INLA). The factors include the number of seaside villages, the number of slope topography villages, and the area of temporarily uncultivated gardens and fields in 2021. The modeling results show that the number of seaside villages, the number of slope topography villages, and the area of fields that are temporarily uncultivated have a significant influence on the occurrence of landslides so that efforts to mitigate and prevent such disasters can be focused on the contributing factors. We conclude that the model might be able to identify potential landslide risk areas through mapping.
Characterization of Thermal Waters Origin from the Back Arc Lampung Province, Indonesia: An Evaluation of Stable Isotopes, Major Elements, and Li/Cl Ratios Iqbal, Mochamad; Kusumasari, Brenda Ariesty; Atmapradhana, Tedi; Trinugraha, Afi Candra; Palupi, Endah Kinarya; Maulidi, Ikhsan
International Journal of Hydrological and Environmental for Sustainability Vol 2, No 1 (2023): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v2i1.171

Abstract

This study reports chemical and isotope data from thermal water samples collected in the Natar area (back-arc Lampung province), Indonesia. Based on the geologic map, Lampung-Panjang Fault is the source of this thermal water appearance with Quaternary volcanic and metamorphic rock in the basement. It is located close to the Quaternary extinct volcano (Mount Betung) around 20 km to the southwest. Therefore, this study aims to provide information on geochemical characteristics and the origin of thermal waters in Natar's non-volcanic area. Variables such as stable isotopes, major, and Li/Cl ratios were analyzed. Furthermore, the thermal waters collected from a well in a different location have a moderate temperature ranging from 47°C to 54°C with 6.23 pH. Lithium and Chloride concentrations as well as Isotope δ18O and δD ranges from 0.02 mg/L to 0.04 mg/L, 5.19 mg/L to 46.12 mg/L, -5.26 ‰ to -2.65 ‰, and -5.26 ‰ to -2.65 ‰, respectively. The stable isotope showed that the thermal water samples have a shift value of ó18O similar to hydrothermal water. The result also has a positive correlation with the distribution of the Li/Cl ratio plotted close to the magmatic water. Consequently, the Natar hot springs may have formed due to the magmatic process of Mount Betung Quaternary with a lower temperature than an active volcano.
Infinite spherical well as model of quantum carnot engine Fahmi, Khazali; Oktaviana, Aditya Tri; Palupi, Endah Kinarya
International Journal of Applied Mathematics, Sciences, and Technology for National Defense Vol 1, No 1 (2023): International Journal of Applied Mathematics, Sciences, and Technology for Natio
Publisher : FoundAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/app.sci.def.v1i1.175

Abstract

The potential well is a simple example that generally used to present an understanding of quantum mechanics. In this article, we used infinite spherical well model to evaluate the thermodynamic processes in a quantum Carnot engine. The energy of the particles depended on the value of n and l lead to complex calculations. For simplicity we used the φ100 and φ200 quantum states to determine work and efficiency of a quantum Carnot machine. The results obtained show that efficiency depends on the value of  which is the ratio of RC and RB.
Management System of Education: Conceptual Similarity (Integration) between Japanese Learning System and Islamic Learning System in Indonesia Munifah, Munifah; Tsani, Iskandar; Yasin, Muhamad; Tortop, Hasan Said; Palupi, Endah Kinarya; Umam, Rofiqul
Tadris: Jurnal Keguruan dan Ilmu Tarbiyah Vol 4 No 2 (2019): Tadris: Jurnal Keguruan dan Ilmu Tarbiyah
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/tadris.v4i2.4893

Abstract

The changing times that followed the development of technology made the education system management must be updated to suit the needs and conditions of the environment. In this article, we look for information about the education system in two different countries, namely Japan and Indonesia. The purpose of this research is to find out the integration between the two countries that have different education management systems. The research method used is a descriptive qualitative method. In this research also, the research method is based on the philosophy of postpositivism, using natural conditions or objects. The instrument used to find out information on the education system in each school uses 10 questions and looks for curriculum information data in general in each country. The findings in this study found that, although the management of the education systems of the two countries was slightly different, Indonesian students could compete to continue their tertiary education to developed countries. Besides, the education system in Japan does not make students from Indonesia experience difficulties.
Intensity level as sustainable energy: Analysis of the conversion of energy stored on cicadas sound waves Umam, Rofiqul; Palupi, Endah Kinarya; Yakin, Khusnul; Iqbal, Mochamad; Siregar, Rahmat Nawi; Irzaman, Irzaman
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 10 No 2 (2021): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v10i2.9798

Abstract

In this study, the researchers measured cicadas' sound waves, considering that cicadas are mostly found in rural areas. The intensity level meter (AMTAST AMF003) was used with time variations (9:00 JST; 12:00 JST; and 15:00 JST). Measurements of air temperature differences (Krisbow Temperature & Humidity Data Logger) were also carried out, and weather conditions were also considered in data collection using satellite data from Himawari, Japan. The interpretation results of intensity level's trend measured at 3:00 pm JST were decreased concerning the changes in days. Meanwhile, the measurement at 09:00 am and 12:00 pm JST did not show a decrement concerning the changes in days (31 days in total). These results show that temperature changes (towards autumn) can affect the intensity level of sound waves. In addition, slightly different intensity levels can affect large changes in acoustic power or the produced sound.
Survey of Elementary School Teacher Needs on Video Learning Mathematics Based on Contentextual Teaching and Learning in Pelembang City Astika, Ruri Tria; Astra, I Made; Makmuri, Makmuri; Sumarni, Sri; Andika, Windi Dwi; Palupi, Endah Kinarya
Al-Jabar: Jurnal Pendidikan Matematika Vol 10 No 2 (2019): Al-Jabar: Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ajpm.v10i2.4936

Abstract

This study aims to gather information about the needs of elementary school teachers in the application of effective mathematics learning. This research is part of a research entitled Development of Learning Videos Based on Contextual Teaching and Learning Approaches to Improve Student Learning Outcomes of Primary Schools in Palembang City. The method used is research and development in the form of survey data. The survey method was carried out using a questionnaire in the Google form on 39 teachers in Palembang. The results of the distribution of the questionnaire interpreted that elementary school teachers were in dire need of media, especially in the form of contextual based mathematics learning videos. The conclusion of this research is the need for the development of learning videos to facilitate teachers in teaching contextual mathematics so that it will have a good impact on learning outcomes of elementary school students. 
Determining the arm's motion angle using inverse kinematics models and adaptive neuro-fuzzy interface system Palupi, Endah Kinarya; Umam, Rofiqul; Junaidi, Rahmad; Perkasa, Yudha Satya; Sanjaya, W. S. Mada
International Journal of Electronics and Communications Systems Vol. 1 No. 1 (2021): International Journal of Electronics and Communications System
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ijecs.v1i1.9238

Abstract

Robotics technology is known as a great technology demand to be developed continuesly. One of the important things that need to be considered is the control of the motion of the robot. Movement predictions can be modeled in mathematical equations. Prediction based on learning logic is also very supportive of motion control systems, especially arm motion. In this study, the authors combined the two methods as the main study. The working principle of the arm is to take colored objects detected by the camera. In this study, we made arm four DOFs (Degree of Freedom), but only one DOF is controlled by ANFIS because the other three DOFs only move at two fixed angles. Two methods of determining the arm angle of motion used are inverse kinematics and ANFIS methods. The angle of motion and the position of the red object can be observed in real-time on the monitor with the interface in the MATLAB GUI. The angular output that appears in the MATLAB GUI is sent to Arduino in the form of characters, then, Arduino translates it into servo motion to the coordinates of the object detected by the camera. The results showed that the ANFIS method was more effective than the inverse kinematics model.
Power and performance analysis of UUV motor systems with torpedo capabilities using to support the indonesian navy's maritime operations Aldhiantoro, Gustav Irgi; Pinardi, Kuntjoro; Kusumadjati, Adhi; Putri Abdul, Annisa Mutiara; Dewi, Dinda Rahma; Baarik, Moh. Hisni Alfan; Palupi, Endah Kinarya
International Journal of Applied Mathematics, Sciences, and Technology for National Defense Vol 3, No 1 (2025): International Journal of Applied Mathematics, Sciences, and Technology for Natio
Publisher : FoundAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/app.sci.def.v3i1.651

Abstract

Unmanned Underwater Vehicles (UUVs) play a crucial role in modern naval operations, particularly in Intelligence, Surveillance, and Reconnaissance (ISR) and Anti-Submarine Warfare (ASW). Their stealth and long-range capabilities provide strategic advantages, yet extended missions pose significant challenges due to power limitations. This study proposes a novel approach to predicting and managing UUV battery capacity for missions lasting up to 30 days. Utilizing OpenModelica, we simulate various operational scenarios by modeling the Direct Current Permanent Magnet (DCPM) motor and its interaction with propulsion systems under different mission profiles including patrol, standby, and attack phases to estimate power consumption and optimize endurance. The results demonstrate key strategies for enhancing UUV autonomy and operational flexibility through advanced power management. These findings contribute to the development of more efficient UUV systems capable of prolonged underwater missions with minimal recharging.
Assessment of Hydrochemical Characteristics and Water Quality as Monitoring of Environmental Conditions in Shallow Groundwater and Kinokawa River, Wakayama Prefecture, Japan Palupi, Endah Kinarya; Yongthong, Keodouangdy; Trinugraha, Afi Candra
International Journal of Hydrological and Environmental for Sustainability Vol 3, No 2 (2024): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v3i2.481

Abstract

Shallow groundwater and river water problems in each country are caused by various factors such as natural factors such as natural disasters, human activity factors such as waste pollution, and others. In this study, we analysed the hydrochemical characteristics of river water to determine the water quality of shallow groundwater and Kinokawa river in Wakayama region of Japan. Shallow groundwater and river water samples were taken along the Kinokawa river at a total of 86 points. The water samples were analysed using Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). In this case, we investigated physicochemical parameters such as total dissolved solids which mainly depend on the concentration of major ions such as Ca, Mg, Na, K, Cl, Li, HCO3, NO3 and SO4 which are used to characterise river water quality. The results of this study show that the calculated values of SAR, PI, Na%, MH and RSC indicate good groundwater use for irrigation purposes. Comparison of geochemical data showed that more than 75% SAR, 94% PI, 80% %Na, and 97% MH indicated a good environmental condition category and the river water can be used for irrigation purposes. The water quality information presented in this paper will be useful for sustainable management of water resources in the study area.
Co-Authors Abdurahman Abdurrahman Adi, Langit Cahya Aldhiantoro, Gustav Irgi Amir Machmud, Amir Andika, Windi Dwi Antomi Saregar Astika, Ruri Tria Atmapradhana, Tedi Baarik, Moh. Hisni Alfan Christina, Athalia Dewi, Dinda Rahma I Made Astra Iqbal, Mochamad Irzaman, Irzaman Iskandar Tsani, Iskandar Khazali Fahmi Kusumadjati, Adhi Kusumasari, Brenda Ariesty Mada Sanjaya WS Makmuri Makmuri Maulidi, Ikhsan Muhamad Syazali Munifah Munifah, Munifah Naqiya, Sadiyana Yaqutna Oktaviana, Aditya Tri Pinardi, Kuntjoro Putri Abdul, Annisa Mutiara Rachmawati, Ro'fah Nur Rahmad Junaidi, Rahmad Rofiqul Umam Salman Alfarisi Siregar, Rahmat Nawi Sri Sumarni Tortop, Hasan Said Trinugraha, Afi Candra Wahyudianto, Benny Yakin, Khusnul Yasin, Muhamad Yongthong, Keodouangdy Yudha Satya Perkasa, Yudha Satya