Direktori jurnal elektronik Politeknik Negeri Padang (PNP)
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    Rancang Bangun Cetakan Alat Press Pelepah Pinang Menjadi Wadah Makanan Ramah Lingkungan untuk UMKM

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    The issue of plastic waste has become a global concern that urgently needs to be addressed. On the other hand, agricultural waste also poses its own challenges. Indonesia is an agrarian country where the agricultural sector plays a significant and vital role in the national economy. One of the major agricultural products in Indonesia, particularly in West Sumatra, is areca nut (betel nut). The areca palm sheath is largely underutilized by farmers, often left unused or burned, which in turn leads to another issue—air pollution. The transformation of organic solid waste into eco-friendly products is still rarely implemented. This study aims to design, assemble, and test a simple press mold to process areca palm sheaths into environmentally friendly food containers. The results show that the mold was successfully designed with dimensions of 140 mm x 140 mm x 20 mm, using ST 42 material. Mold testing with temperature variations (100°C, 150°C, and 175°C) and durations (1 minute, 2 minutes, and 5 minutes) indicated that a temperature of 150°C produced the best results in terms of color and shape accuracy. This innovation is expected to support small and medium enterprises (SMEs) in reducing plastic waste and utilizing areca palm sheath waste

    Revolusi E-Commerce: Transaksi Digital dan Dampaknya Pada Pertumbuhan Ekonomi di ASEAN-5

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    This study analyzes the impact of e-commerce and digital transformation on economic growth in five ASEAN countries (Indonesia, Malaysia, Singapore, Thailand, and the Philippines) during the 2011-2021 period, using panel data and the Common Effect Model (CEM) or pooled data panel approach. The results show that digital payment has a positive and significant impact on economic growth, indicating the importance of digital payment adoption in enhancing economic activity in the region. On the other hand, e-commerce transaction value has a significant negative effect, which can be explained by the imbalance in value-added distribution and the concentration of capital on certain e-commerce platforms that do not support other sectors evenly. World digital competitiveness has a positive impact on GDP, showing that countries with higher digital competitiveness tend to have better economic growth. Total population contributes positively but has a minor influence on GDP, while labor force shows a significant negative effect, reflecting challenges in matching workforce growth with the rapidly evolving digital market demands

    Analisis Aplikasi System Ai Robotnisasi pada Kualitas Permesinan Mesin CNC di PT Evergrown Technology Batam

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    This study aims to analyze the application of Artificial Intelligence (AI) and robotization systems on the machining quality of CNC machines at PT Evergrown Technology Batam. The research focuses on two primary indicators of machining quality: surface roughness and product cylindricity, which were experimentally measured in a controlled laboratory environment. Additionally, production process efficiency was examined through indicators such as production time, production costs, defect rates, and tool wear. Data were collected from 25 observation units selected through purposive sampling and analyzed using a quantitative approach with the assistance of SPSS version 2.3. The analytical methods employed include descriptive statistics, simple linear regression, one-way ANOVA, and comparative analysis to evaluate pre- and post-implementation conditions of AI and robotization systems. The results indicate that the implementation of AI and robotization has a significant impact on improving machining quality and production efficiency, as evidenced by a significance value of p < 0.05. These findings suggest that integrating AI and automation into production processes is a strategic move for advancing modern manufacturing industries

    Modifikasi Pisau pada Mesin Pencacah Tongkol Jagung untuk Produksi Pakan Ternak

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    Tongkol jagung merupakan limbah pertanian yang berpotensi sebagai bahan baku pakan ternak, selain itu dapat juga dimanfaatkan untuk pembuatan pupuk organik, bioetanol, syngas, dan briket. Limbah tongkol jagung jika diolah dengan cara dicacah dapat dijadikan sebagai bahan baku alternatif pakan ternak, sehingga dapat memberikan nilai tambah bagi petani. Untuk itu dibuatlah mesin pencacah yang dapat menghancurkan tongkol jagung menjadi granul atau serpihan. Berdasarkan perencanaan perhitungan, maka spesifikasi mesin pencacah tongkol jagung adalah sebagai berikut: Mesin menggunakan dinamo listrik berdaya 1 HP, poros yang digunakan terbuat dari material ST 37 dengan diameter 25 mm, untuk menyalurkan daya dari dinamo ke poros digunakan kopling FCL 90, dan bilah pencacah terbuat dari plat ST 37 dengan ketebalan 3 mm. Mesin ini memiliki kapasitas produksi sebesar 21 kilogram/jam

    Pembangkit Listrik Tenaga Surya (PLTS) Off Grid untuk Surau Nur Jannah kawasan wisata Puncak Labuang

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    Community service program for lecturers in the Department of Electrical Engineering, in order to fulfill the Tridharma of the Padang State Polytechnic College (PNP) for the 2024 fiscal year. The activity carried out is the installation of an Off Grid Solar Power Plant (PLTS) at Surau Nur Jannah in the Puncak Labuang tourist area Sweet Limau Padang City. Based on the Limau Manis sub-district planning analysis document for the next five years, one of the potentials that will be developed to improve the community's economy is to make the Puncak Labuang area a glamping/camping ground tourism area, farming education with an environmentally friendly concept. Currently, the development of this tourist area is carried out independently by the community by working together, such as building a prayer room. Based on the results of field visits and meetings between the PNP thematic service team and the community, on that occasion the community expressed complaints about limited human resources related to the development of the Puncak Labuang tourist area. Some of the issues raised include graphic design, spatial planning, governance, the need for clean water and the availability of electrical energy. PNP, through its community service activities, helps find solutions to solve problems in the Puncak Labuang tourist area by involving all departments in the PNP so that the Puncak Labuang tourist area can be known and visited by tourists

    Kinerja Sistem Pengolahan Air Limbah Domestik Terpusat Pada Kabupaten Padang Pariaman

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    The national achievement of access to proper sanitation has not yet been achieved and is aligned with the Sustainable Development Goals (SDG's) target, one of which is "Realizing Access to Safe and Sustainable Drinking Water and Sanitation". In terms of accelerating the implementation of sanitation infrastructure in the regions, the Government conducts a financing program for the Construction of Centralized Domestic Wastewater Treatment Systems (SPALD-T). However, there are many obstacles and problems that cause the condition of infrastructure and facilities built to be not in an ideal condition, so it is necessary to analyze the performance of centralized domestic wastewater treatment systems, especially in Padang Pariaman Regency. The analysis was conducted in 11 (eleven) Nagari locations receiving community-based sanitation programs whose funds were sourced from DAK from 2019 to 2023 using descriptive qualitative methods, namely observation, interviews and documentation in the form of scoring and weighting and SWOT analysis. In the 11 Nagari analyzed, there is Nagari Sintuk in Sintuk Toboh Gadang District (program year 2022) which has a good quality assessment with a relative value of 8.25, while other Nagari get moderate and poor assessments. Based on the results of the analysis, the dominant aspect that determines the feasibility of waste management is the institutional management aspect in the 11 (eleven) villages analyzed. Where in the assessment of each aspect, the management institution aspect has a very low average value with a weight of 1.22. And based on the results of the SWOT analysis, the management organization of the Beneficiary Group (KPP) has a very important role in the sustainability of the community-based sanitation program. &nbsp

    Penanganan Longsor Pada Ruas Jalan Padang – Painan (Sta. 50+950 - 51+035) di Kabupaten Pesisir Selatan dengan Dinding Penahan Tanah dan Fondasi Tiang Bor

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    High rainfall on steep slopes along the Padang – Painan city boundary road (Sta 50+950 – Sta 51+035) Pesisir Selatan Regency resulted in landslides and damage to retaining walls. This study aims to analyze slope stability, and retaining wall stability without and using bored pile foundations. The retaining wall used in this study is the Cantilever type. Slope stability analysis using the slices method was carried out by trial and error three times, the results showed a safety factor value (FS <1.25) which means the slope is unstable. The results of the slope improvement analysis using cantilever retaining wall without bored pile foundations showed that the structure was safe against overturning (FS = 3.9) and shear safety (FS = 2.3), but not safe against soil bearing capacity (FS = 1.5 <3). The addition of a single bored pile foundation to the retaining wall increased the bearing capacity to 3,443.43 kN but was unable to withstand the design load of 41,766.45 kN. Therefore, a pile group foundation with a maximum load capacity of 482,080.27 kN, and a permissible bearing capacity of 192,832 kN is used so that it can withstand the structural load. The estimated cost of geotechnical and structural work is Rp10,361,534,397.05 with an implementation time of 10 weeks. The results of this study provide technical recommendations for comprehensive slope and DPT repairs for similar conditions in the future

    Pengaruh Penambahan Abu Tempurung Kelapa dan Silika Fume Terhadap Kuat Tekan Beton

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    Coconut shell ash and silica fume can enhance the strength and durability of concrete. Coconut shell ash, as an organic waste material, functions as a lightweight aggregate, while silica fume improves the bond between cement and aggregate, thereby increasing the overall durability of the concrete. This study aims to compare the compressive strength results and determine the optimal percentage of coconut shell ash and silica fume in both normal and mixed concrete at 28 days of curing, using an experimental method. The results showed that the compressive strength of normal concrete at 28 days was 26.33 MPa. After the addition of 2% coconut shell ash and 2% silica fume, the compressive strength increased significantly to 31.61 MPa, representing an improvement of 5.28 MPa. However, adding more than 2% coconut shell ash led to a decrease in compressive strength, with the lowest value of 22.36 MPa observed in the mixture containing 10% coconut shell ash and 2% silica fume. The optimal combination was found to be 2% coconut shell ash and 2% silica fume, yielding the highest compressive strength of 31.61 MPa. These findings suggest that organic waste such as coconut shell ash can serve as an environmentally friendly alternative in the construction industry, especially when combined with supplementary materials like silica fume

    Perancangan Mesin Pengering Daun Serai Sistem Rotary

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    Serai merupakan salah satu jenis rumput-rumputan yang sudah sejak lama di budidayakan di Indonesia. Untuk menaikan pendapatan petani serai perlu dilakukan usaha perluasan kegiatan sehingga ada added value bagi petani. Untuk itu perlu dilakukan pembuatan sebuah alat yang digunakan untuk mengolah serai menjadi minyak serai. Tujuan dari rancang bangun ini untuk merancang dan mendesain mesin pengering daun Serai sistem rotary, untuk membuat gambar kerja mesin pengering daun Serai sistem rotary

    Anatomizing Taylor Swift’s ‘1989 (Taylor’s Version)’ Album

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    This qualitative study examines the parallelism in 21 songs from Taylor Swift's '1989 (Taylor's Version)' album at the morphological-lexical and phonological levels, as well as the figurative languages used. The study has two research questions: (1) What are the occurring parallelisms in the album in terms of Morphological–Lexical level and Phonological Level? (2) What are the different types of figurative languages employed? Content analysis was used to determine morpheme, word, and phrase repetition, while Cambridge Dictionary was used to identify assonance, alliteration, and consonance repetition. Inter-coding was also used. The study is grounded in Leech and Short's Foregrounding Theory and Perrine's Figurative Language Theory. Word repetition was the most frequent, followed by morpheme repetition. The findings revealed that Taylor Swift employed parallelisms in the said album such as morpheme, word, and phrase repetition. The word repetition got the highest frequency number with two hundred fifty-one (251), followed by morpheme repetition with one hundred sixty-seven (167) frequency number. The top five most prevalent figurative languages in the songs were metaphor, hyperbole, paradox, simile, and personification. The current study is presented using a formalist perspective, the study suggests using a different lens of analysis—the functionalist approach

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    Direktori jurnal elektronik Politeknik Negeri Padang (PNP) is based in Indonesia
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