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Multipurpose quadcopter with multirole weaponized system capability to support national strategic industrial defense and independence posture

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AIP Conference Proceedings 2024年第1期3215卷

作者： Muhammad Hanifudin Al Fadli Wibby Aldryani Astuti Praditasari Dananjaya Ariateja Herwin Melyanus Hutapea Hery Sudaryanto Electrical Engineering Study Program Departement of Defense Science and Technology Universitas Pertahanan Republik Indonesia Bogor Indonesia 16810

The use of drones in modern combat is a new phenomenon of combat development. Various types of drones have been widely used in modern combat zones, such as reconnaissance drones, artillery fire correction, kamikaze drones, and drones for bombing missions. Since the development of drones for military purposes requires a long time and much money, many armies from various countries began to develop drones for combat missions by modifying civilian drones into drones armed for military needs. Many drones are modified to transport explosives to be dropped on the opponent’s position. In this research on Multipurpose Quadcopters with Multirole Weaponized System capability, a drone system based on DJI Mavic 3 is developed to lift cargo as munitions weighing 350 grams. The drone system can release munitions using a remote controller using the ADC reading of the auxiliary light on the drone. The ADC value is then read by the Arduino Nano microcontroller and used to drive the servo motor. From the test, the ADC threshold value suitable for reading the drone’s lights is 170 out of a maximum value of 255. The dropped munition system can read the attitude and movement when dropped until it hits the target. The munition moved stably when dropped from a height of 70 meters, and the oscillation did not exceed 2 seconds since the munition was dropped from the target. When dropped, the average duration of the munition did not exceed 5.91 seconds. The contact of the munition to the target did not exceed a distance of 1.02 meters from the aiming point.

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Effect of feedback on learning motivation of primary teacher education students in primary school physics courses 10

Effect of feedback on learning motivation of primary teacher...

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10th National Physics Seminar, SNF 2021

作者： Sianipar, L.K. Sitompul, H. Sanjaya, L.A. Puspa, R.W.D. Pertiwi, W.A. Qoiriyah, W. Department of Physics Education Universitas Pelita Harapan Tangerang15811 Indonesia Department of Physics Faculty of Mathematics and Natural Science Universitas Negeri Jakarta Indonesia Kartika VIII-1 Senior High School Jakarta Indonesia Islamic Education Management Study Program Faculty Islamic of Education and Teacher Training Muhammad Azim Institute Jambi Indonesia Informatics Engineering Study Program Faculty of Engineering Sheikh Yusuf Islamic University Tangerang Indonesia

Based on the results of the questionnaire distributed to Primary Teacher Education Students, 96% of students said that Physics is difficult to understand because the material is very complex, many formulas, especially the learning process is done online. This study aims to describe the influence of providing feedback on the motivation of Primary Teacher Education Students in primary school physics courses. The method used in this research is descriptive qualitative. Meanwhile, the instrument used was a questionnaire which was distributed to 115 elementary school education students. The result of the research shows that giving feedback consistently is able to motivate students. This can be seen from the results of the questionnaires distributed, each indicator is of very good value. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Students

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Life cycle assessment analysis of empty fruit bunches utilization: A case study in Riau province

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AIP Conference Proceedings 2024年第1期3215卷

作者： Ayu Wulandari Djoko Mulyo Hartono Astryd Viandila Dahlan Environmental Engineering Study Program Department of Civil Engineering Universitas Indonesia Depok Indonesia

Palm oil consumption has risen due to an increasing preference for vegetable oil. However, this growth in the palm oil industry has given rise to various challenges, especially concerning environmental issues and emissions. This study evaluated the ecological consequences of using empty palm fruit bunches in plantations and furnaces and utilizing solid waste from empty fruit bunches as a renewable energy source. The research findings indicate that, for a 30 tons/hour capacity, the total greenhouse gas emissions (GWP) in the furnace and plantation management amount to 234.72 kg CO2 eq and 234.69 kg CO2 eq, respectively. The acidification impact (0.51 kg SO2 eq) and the eutrophication (0.95 kg PO4 eq) in the plantation and the furnace. For a 60 tons/hour capacity, the total GWP increases to 328.59 kg CO2 eq in the furnace and 328.37 kg CO2 eq in the plantation. Furthermore, acidification (0.73 kg SO2 eq) and eutrophication (1.33 kg PO4 eq) impacts persist in both the plantation and furnace stages. The primary concern highlighted in this research is furnace management, particularly concerning the oil content. Additionally, the production stage emphasizes the importance of raw materials as another critical hotspot. The study recommends implementing technological changes and adopting preventive maintenance practices to minimize the oil content in empty fruit bunches to mitigate the environmental impact during crude palm oil (CPO) production stages; utilizing empty fruit bunches as renewable energy presents an option to reduce greenhouse gas emissions.

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Determination of business development strategy using SWOT analysis and quantitative strategic planning (QSPM) to increase sales turnover

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AIP Conference Proceedings 2024年第1期2952卷

作者： Katon Muhammad Alfi Khoerunisak Budi Utami Tigar Putri Adhiana Hasyim Asyari Rani Aulia Imran Industrial Engineering Study Program Engineering Faculty Universitas Jenderal Soedirman Banyumas Indonesia

Rukun Makmur is one of the SMEs in the fisheries sector that cultivates freshwater ornamental lobsters. In 2019, the sales of Rukun Makmur MSMEs increased. However, in 2020, Rukun Makmur MSMEs experienced the impact of the Covid-19 Pandemic, resulting in a decline in sales. Therefore, this study aims to provide a proposed development strategy for MSMEs in Rukun Makmur. The analytical approach used is the tools in the form of CPM (Competitive Profile Matrix), BCG Matrix (Boston Consulting Group), Grand Strategy Matrix, and IE Matrix (Internal-External). As for the decision-making method, namely QSPM (The Quantitative Strategic Planning Matrix). The result of this research is that UMKM Rukun Makmur, compared to competitors, is in second place after UMKM C with a score of 3,013. Then, Rukun Makmur’s MSME market growth of -0.339 was in the medium position and the low position for its market share with a relative market share of 0.49. In addition, MSME Rukun Makmur is in the Hold and Maintain quadrant with a total IFE of 2,725 and an EFE of 2,482. The final result is a Development Strategy prioritized for Rukun Makmur SMEs: Market Penetration with TAS 6,587, Related Diversification with TAS 6,067, and Product Development with TAS 5,687.

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Solid-state fermentation with variation of inoculum volume in mold to increase the content of alpinetin in rice bran oil

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AIP Conference Proceedings 2024年第1期2710卷

作者： Muhammad Reynaldy Syamsurridjal Tania Surya Utami Rita Arbianti Bioprocess Engineering Study Program Department of Chemical Engineering Universitas Indonesia Depok Indonesia

Alpinetin (7-hydroxy-5-methoxyflavanone) is a flavonoid with anti-bacterial, anti-inflammatory, and other important therapeutic effects, so it has significant potential benefits. Rice husks or bran from rice are known to contain antioxidants, one of which is flavonoids. The addition of mold in the fermentation process can be used to enrich the lipid content of the fermented bran. Therefore, Aspergillus terreus chose as a mold. In this study, the fermentation process varied in the volume of mold inoculum with variables 1, 3, 5, 7, and 9 mL in the fermentation medium, respectively. Inoculum volume variables are related to the metabolic products of the mold used, Aspergillus terreus, where the metabolic products in the form of desaturase and elongase enzymes catalyze the formation of unsaturated fatty acids. This unsaturated fatty acid content was tested qualitatively using LC-MS/MS-TQF. The results showed that the volume of inoculum with a variation of 7 mL had the highest lipid yield of 19.94% and with the detection of alpinetin content in RT 13.04 with an area (%) of 31.03%.

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Preliminary study of increasing added value in basalt rocks as raw material for making basalt fiber (Fiber Basalt Reinforced Composite)

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AIP Conference Proceedings 2024年第1期3065卷

作者： Y. Yuliadi Zaenal Elfida Moralista Noufal Abhinaya Maya Almaniar Zulhi Wibiyana Mining Engineering Study Program Faculty of Engineering Islamic University of Bandung Bandung Indonesia

West Java has mining materials from volcanic activities including andesite and basalt. This mining materialis used conventionally as a building (construction) material which is still in the form of ’raw materials’ or ’semi-finished’ so that its use is only carried out simply and the selling value is low. To increase its selling value, basalt rock can be used as a composite construction material in the form of fibers, including composites with the strengthening of basalt fibers (Fiber Basalt Reinforced Composite). This study aims to see the characteristics of basalt rocks that can be made fibers in 3 locations in the Bandung area (Gunung Bohong, Cipatik and Batu Templek) including the characteristics of chemical composition, physical and mechanical properties and mineral composition. The research methodology was carried out by a comparative method by looking at the characteristics of other basalt rocks that can already be used as basalt fibers, namely chemical composition (Al2O3 and SiO2) with the XRF method, testing physical (density) and mechanical properties (tensile strength and Elastic Modulus) and mineral composition with petrography analysis methods by looking at the plagioclase mineral. Based on chemical analysis, of the three samples studied, they were included in the criteria for basalt rocks that can be used for the manufacture of basalt fibers, but in these samples there were chemical compounds that were not included in the criteria, namely the Fe2O3 + FeO and MgO compounds. Then the characteristics of physical properties that are included in the criteria for making basalt fibers are in the Cipatik and Batu Templek samples. Meanwhile, the mechanical properties that are included in the criteria are in the Gunung Bohong and Cipatik samples. Furthermore, for petrography testing, it was concluded that the mineral composition in the three samples studied contained plagioclase minerals by 100%. Thus it can be indicated that the type of rock is basalt rock – and

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The effect of additional carbon source and solvent ratio on the enrichment of alpinetin level in rice bran oil

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AIP Conference Proceedings 2024年第1期2710卷

作者： Audria Azzahra Karimah Wulan Guritno Rita Arbianti Tania Surya Utami Bioprocess Engineering Study Program Department of Chemical Engineering Universitas Indonesia Depok Indonesia

Rice bran is a by-product of the rice milling process. Rice bran contains a variety of antioxidant compounds that are beneficial for the health of the body, such as vitamin E, oryzanol, and flavonoid compounds. One of the compounds classified in flavonoids is alpinetin which has antioxidant activity that can protect cells from free radicals in the body. Alpinetin is a flavonoid bioactive compound known to have various benefits, such as anti-inflammatory, anticancer, and antioxidant with low systemic toxicity. Enrichment of the content of bioactive compounds and fatty acids in rice bran oil can be carried out by a fermentation process using Aspergillus terreus. This research examined the effect of carbon source concentration and solvent ratio methanol: chloroform. This research used the solid-state fermentation method and modified the Bligh-Dyer extraction process. The extracted rice bran oil then tested using a Liquid Chromatography-Mass Spectrometry (LCMS) qualitatively. This research found that the addition of 10 g/L glucose produced the optimum lipid yield of 7.695%, and the highest alpinetin content was produced with the addition of glucose as much as 8g/L with alpinetin content of 27.11%. The ratio of methanol: chloroform =2:3.1 v/v produced the highest lipid yield, 9.54%, and the initial content of alpinetin compounds in rice bran extract increased from 0.02% to 3.43%.

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Implications for fault locking south of Jakarta from an investigation of seismic activity along the Baribis fault, northwestern Java, Indonesia

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SCIENTIFIC REPORTS 2022年第1期12卷 1-10页

作者： Widiyantoro, S. Supendi, P. Ardianto, A. Baskara, A. W. Bacon, C. A. Damanik, R. Rawlinson, N. Gunawan, E. Sahara, D. P. Zulfakriza, Z. Husni, Y. M. Lesmana, A. Global Geophysics Research Group Faculty of Mining and Petroleum Engineering Institut Teknologi Bandung Bandung 40132 Indonesia Faculty of Engineering Maranatha Christian University Bandung 40164 Indonesia Agency for Meteorology Climatology and Geophysics (BMKG) Jakarta 10720 Indonesia Department of Earth Sciences Bullard Labs University of Cambridge Cambridge CB3 0EZ UK Geophysical Engineering Study Program Faculty of Mining and Petroleum Engineering Institut Teknologi Bandung Bandung 40132 Indonesia PT. Reasuransi Maipark Multivision Tower Menteng Atas Jakarta 12960 Indonesia

Recent borehole seismic deployments conducted along the Baribis Fault in northwestern Java reveal that it may be active. In this study, we exploit these data to locate proximal earthquakes using a relative relocation technique, estimate their moment magnitudes using a spectral fitting method and compute their focal mechanisms via waveform inversion. We observe that seismicity in the eastern part of the fault is significantly higher than in the west, where a previous GPS study of the region south of Jakarta demonstrated the existence of high compression rates. These observations imply that the western Baribis Fault is locked, and that neighbouring areas, including southern Jakarta and its surroundings, may be highly vulnerable to future sizeable earthquakes when accumulated elastic strain energy is eventually released during fault rupture. Significantly, the current generation of Indonesia's national hazard maps have not considered seismicity along the Baribis Fault. Our new results therefore call for an urgent reappraisal of the seismic hazard in northwestern Java that carefully takes into account the Baribis Fault and its earthquake potential, particularly in light of its proximity to Jakarta, a megacity that lies at the heart of one of the most densely populated islands in the world.

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Removal of Physical Contaminants from Potable Water Distribution 1

Removal of Physical Contaminants from Potable Water Distribu...

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1st International Conference on Environment, Sustainability Issues and Community Development, INCRID 2019

作者： Wicaksono, A.P. Zaman, B. Budihardjo, M.A. Master of Environmental Engineering Study Program Diponegoro University Indonesia Department of Environmental Engineering Diponegoro University Indonesia

Water distribution from water treatment plants may still contain some contaminants such as odour, sediments, discolouration, bacteria, viruses, and worms. This effluent is unhygienic and has potential hazards waterborne disease to human health such as skin disease, itching, influenza, typhus, and diarrhea. These diseases are caused by several contaminant parameters, both physical, chemical, and microbiological. Several methods can be used to treat water such as filtration which can reduce the concentration of contaminants carried or formed in potable water distribution so that it can conform the drinking water quality standards. Filtration has many media types such as activated carbon, greensand manganese, ferolite, polypropylene, yarn, and ceramic. The advantage of activated carbon is low cost, high efficiency, and easy to maintain. Effects of water purification show that the filtration from activated carbon combined with polypropylene filtration processes has significant effects and very effective to reduce physical contaminant. It can reduce 60 - 80 % contaminants, depends on the concentration of the contaminant. This article is a review of some results of the research process. © 2020 IOP Publishing Ltd.

关键词： Activated carbon

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Identification of Beef Freshness Using Linear Discriminant Analysis (LDA) Algorithm and Extraction of HSV Values

Identification of Beef Freshness Using Linear Discriminant A...

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Electronic and electrical engineering and Intelligent System (ICE3IS), International Conference on

作者： Riduwan Napianto Agung Tri Prastowo Agung Deni Wahyudi Wajiran Yohanes Egi Pratama Yudoutomo Arico Ayani Suparto Faculty of Engineering and Computer Science Universitas Teknokrat Indonesia Bandarlampung Indonesia Information Technology Education Study Program STKIP PGRI Situbondo Situbondo Indonesia

ISBN: (纸本)9781665465427

To determine the quality of beef, it is usually seen using a flashlight and matching it with a predetermined color standard. However, this method is time consuming and the results are inconsistent due to human visual limitations. This study aims to identify the freshness of beef based on its color characteristics using feature extraction method with HSV and LDA method for identification. The identification process begins with the transformation process from RGB images to L*a*b, then image segmentation serves to separate one object from another and image identification uses the LDA method with feature extraction using HSV. The use of color feature extraction with the HSV algorithm to assist in obtaining information from the colors contained in the image for easy identification. Furthermore, the LDA algorithm has a function to obtain the maximum projection to obtain a smaller dimensional space so that the desired patterns can be separated through the boundary line of a linear equation so as to form a certain class or group. Based on the test results using the confusion matrix, it produces a precision value of 80%, recall of 84%, and accuracy of 82%.

关键词： Visualization Image segmentation Image color analysis Shape Feature extraction Mathematical models Linear discriminant analysis

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