Jurnal Politeknik Negeri Jakarta
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Optimalisasi Coverage Area Jaringan WiFi Di SMK N 1 Tegalalang Dengan Menggunakan NetSpot
No full textThis study focuses on optimizing the Wi-Fi network coverage area at SMK Negeri 1 Tegalalang through mapping and analysis using the NetSpot application. Stable and evenly distributed internet connectivity is essential to support digital-based learning activities in schools. Preliminary observations revealed several blank spots and uneven signal distribution across classrooms and buildings, indicating the need for improvement in network infrastructure. The research employed an action research approach consisting of four stages: diagnosing, action planning, action taking, and evaluating. Data collection was conducted using both active and passive site surveys, measuring the Received Signal Strength Indicator (RSSI), and generating heatmap visualizations to illustrate signal distribution. The analysis emphasized three main aspects: wall attenuation factors, access point positioning, and potential channel interference that contributed to performance degradation. The findings provide a comprehensive signal coverage map along with recommendations for more strategic placement of access points. These recommendations resulted in improved coverage with a minimum RSSI target of –65 dBm and a service area of at least 80%. The outcomes of this study are expected to serve as a valuable reference for schools in designing and enhancing Wi-Fi infrastructure, ensuring reliable connectivity that supports the implementation of online and blended learning effectively.-- Penelitian ini berfokus pada optimalisasi cakupan jaringan Wi-Fi di SMK Negeri 1 Tegalalang melalui pemetaan dan analisis menggunakan aplikasi NetSpot. Konektivitas internet yang stabil dan merata sangat penting untuk mendukung kegiatan pembelajaran berbasis digital di sekolah. Hasil observasi awal menunjukkan masih terdapat blank spot dan distribusi sinyal yang tidak merata pada beberapa ruang kelas dan gedung, sehingga diperlukan peningkatan infrastruktur jaringan. Penelitian ini menggunakan pendekatan action research yang terdiri dari empat tahap, yaitu diagnosing, action planning, action taking, dan evaluating. Pengumpulan data dilakukan melalui site survey aktif dan pasif, pengukuran Received Signal Strength Indicator (RSSI), serta visualisasi heatmap untuk menggambarkan distribusi sinyal. Analisis difokuskan pada tiga aspek utama, yaitu faktor redaman dinding, posisi access point, dan potensi interferensi kanal yang memengaruhi penurunan kinerja jaringan. Hasil penelitian menghasilkan peta cakupan sinyal yang komprehensif beserta rekomendasi penempatan access point yang lebih strategis. Rekomendasi tersebut menunjukkan peningkatan cakupan dengan target minimum RSSI sebesar –65 dBm dan area layanan minimal 80%. Hasil penelitian ini diharapkan dapat menjadi referensi bagi sekolah dalam merancang dan meningkatkan infrastruktur jaringan Wi-Fi sehingga konektivitas lebih andal untuk mendukung penerapan pembelajaran daring maupun blended learning secara optimal
Implementasi Dan Pengujian Sistem Otomatisasi Pengomposan Pupuk Kompos Berbasis Internet Of Things
No full textThe conventional composting process often experiences instability in environmental parameters such as temperature, humidity, and pH, resulting in longer decomposition time and inconsistent compost quality. This study aims to design and develop an Internet of Things (IoT)-based automatic composter system capable of monitoring and controlling critical parameters during the composting process in real time. The system utilizes temperature, humidity, and pH sensors integrated with a microcontroller to automatically activate the heating element and fan according to the required conditions. The process data are transmitted to a website, enabling users to perform remote monitoring. Experimental results show that the system operates stably with sensor accuracy within acceptable tolerance limits, with an error of 3.00% for temperature, 7.88% for pH, and a consistent linear relationship in soil moisture measurements. With the maintained stability of these parameters, the composting process proceeds more quickly and produces more mature and uniform compost. This system offers a practical solution for organic waste management at the household scale.Penelitian ini membahas perancangan dan implementasi sistem otomatisasi pengomposan sampah organik berbasis Internet of Things (IoT). Sistem dirancang menggunakan mikrokontroler Arduino Uno sebagai pusat kendali yang terhubung dengan sensor suhu dan kelembapan DHT22, sensor pH tanah, dan sensor kelembapan tanah. Data sensor ditampilkan pada LCD 20x4 dan dikirimkan secara nirkabel menggunakan modul LoRa ke ESP32 NodeMCU, yang kemudian mengirim notifikasi ke Telegram sebagai media pemantauan jarak jauh. Sistem ini juga dilengkapi dengan aktuator seperti lampu pijar, pompa cairan EM4, pompa air, dan motor DC pengaduk yang dikendalikan secara otomatis. Hasil pengujian menunjukkan bahwa seluruh komponen bekerja sesuai fungsi dengan tingkat akurasi yang baik, termasuk sensor pH dengan rata-rata error 7,88%, sensor suhu DHT22 dengan error 3,00%, dan modul RTC dengan delay rata-rata 1,46 detik. Sistem ini dinilai efektif dalam meningkatkan efisiensi proses pengomposan sekaligus memberikan kemudahan monitorin
ANALISIS PERCEPATAN WAKTU PROYEK DENGAN METODE CRASHING DAN LAST PLANNER SYSTEM (LPS): STUDI KASUS PROYEK PEMBANGUNAN GEDUNG FASILITAS PENGEMBANGAN PRODUK SKALA PILOT (GEDUNG NO.34)
No full textThe problem of delay remains a major challenge in the construction world. During the implementation of construction projects, delays are often caused by obstacles or unplanned problems. Delays lead to the duration of project execution not as planned in the work contract. Many ways are done to overcome project schedule delays such as the crashing time acceleration method and the Last Planner System (LPS). The crashing method is carried out by accelerating the duration of project completion by carrying out three systems, namely increasing manpower, changing work time (shifts) and adding work time (overtime). Meanwhile, the LPS is a planning system based on collaboration, integrated commitment between works by involving people who are directly responsible and understand the work in a production unit. This study aims to analyze the acceleration of time with the Crashing method and with the LPS then compare the effectiveness of time acceleration between the two methods. Case study from the Pilot Scale Product Development Facility Building (Building No.34). The problem is what level of efficiency in both methods of time acceleration will be analyzed. The implementation of crashing with alternatives shift work reduces the project duration by 22 days, whereas the simulation of the LPS increases the actual weight compared to planning. The difference between the two method is that the crashing method is applied after delays occur, while the LPS accelerates work and increases productivity by utilizing continuous team collaboration
ANALISA KEKUATAN KONSTRUSKI DOUBLE BOTTOM KAPAL AKIBAT PERUBAHAN UKURAN MANHOLE SEBAGAI UPAYA UNTUK MENINGKATKAN KESELAMATAN PELAYARAN DI ALKI II
No full textThis study analyzes the strength of the ship's double bottom construction due to changes in manhole size to improve shipping safety in Indonesian Archipelagic Sea Lane II (ALKI II). The study was conducted at Taboneo Anchorage, South Kalimantan, which is a busy shipping route. The initial stage includes measuring the ship's structure and tidal data, as well as collecting secondary data in the form of construction drawings and material specifications for General Cargo type ships. Next, structural modeling was carried out using the Finite Element Method (FEM) approach with reference to Indonesian Classification Bureau (BKI) Rules 2025. The cargo load and bottom load were calculated and input into the model. Three variations of manhole sizes were tested: 350 x 450 mm, 400 x 600 mm, and 400 x 800 mm. The simulation results show that at 350 x 450 mm, the maximum stress is 111.23 N/mm² and the displacement is 4.9 mm, still safely below the BKI permit limit (150 N/mm²). At a size of 400 x 600 mm, the stress increases to 124.68 N/mm² with a displacement of 5.32 mm, which remains safe and recommended. However, the size of 400 x 800 mm produces a stress of 283.23 N/mm² and a displacement of 9.79 mm, exceeding the allowable limit and thus risking structural failure. The maximum recommended manhole size is 400 x 600 mm to maintain construction strength and navigation safety in ALKI II.Penelitian ini menganalisis kekuatan konstruksi double bottom kapal akibat perubahan ukuran manhole untuk meningkatkan keselamatan pelayaran di ALKI II. Penelitian dilakukan di Taboneo Anchorage, Kalimantan Selatan, yang merupakan jalur pelayaran padat. Tahap awal meliputi pengukuran struktur kapal dan data pasang surut, serta pengumpulan data sekunder berupa gambar konstruksi dan spesifikasi material kapal tipe General Cargo. Selanjutnya, pemodelan struktur dilakukan menggunakan pendekatan Finite Element Method (FEM) dengan acuan BKI Rules 2025. Beban muatan dan beban alas dihitung serta diinput ke dalam model. Tiga variasi ukuran manhole diuji: 350 x 450 mm, 400 x 600 mm, dan 400 x 800 mm. Hasil simulasi menunjukkan bahwa pada ukuran 350 x 450 mm, tegangan maksimum sebesar 111,23 N/mm² dan pergeseran 4,9 mm, masih aman di bawah batas izin BKI (150 N/mm²). Pada ukuran 400 x 600 mm, tegangan meningkat menjadi 124,68 N/mm² dengan pergeseran 5,32 mm, tetap aman dan direkomendasikan. Namun, ukuran 400 x 800 mm menghasilkan tegangan 283,23 N/mm² dan pergeseran 9,79 mm, melebihi batas izin sehingga berisiko kegagalan struktur. Ukuran manhole maksimal yang direkomendasikan adalah 400 x 600 mm untuk menjaga kekuatan konstruksi dan keselamatan pelayaran di ALKI II
Analisis Sifat Mekanik dan Penyerapan Air Komposit Polyester Berbasis Serat Alami
No full textNatural fibers are increasingly utilized as reinforcing materials in the modern materials industry. In this study, composites comprising 15% untreated coconut fiber, pineapple leaf fiber, palm fiber, corn husk fiber, or sugar cane fiber and 85% polyester were fabricated. Water absorption was evaluated by immersing the composites for 3, 7, 14, and 21 days. The tensile strength and morphology of unsoaked composites were also assessed to determine the influence of fiber type. Water absorption increased with immersion time for all composites, although the trends varied among fiber types. The coconut fiber composite exhibited the highest water absorption rate, whereas the pineapple leaf fiber composite demonstrated the lowest. The pineapple leaf fiber composite also achieved the highest tensile strength. In contrast, composites containing coconut fiber, palm fiber, corn husk fiber, and sugar cane fiber displayed lower tensile strength, attributed to imperfect interfacial bonding between the fibers and the polyester matrix.Pemanfaatan serat alami sebagai bahan penguat semakin mendapatkan perhatian dalam industri material modern. Komposit yang terbuat dari serat kelapa, serat daun nanas, serat ijuk, serat kulit jagung, dan serat tebu dengan polyester. Komposit yang dibuat dengan kandungan serat tanpa perlakuan 15% dan polyesrer 85%. Komposit direndam dalam air selama 3, 7, 14, dan 21 hari untuk mengamati pengaruh durasi perendaman terhadap penyerapan air. Komposit yang tidak direndam untuk mengamati pengaruh perbedaan serat alami terhadap kekuatan tarik dan morfologi. Hasil penelitian menunjukkan bahwa penyerapan air meningkat pada seluruh komposit seiring dengan bertambahnya waktu perendaman, namun memiliki tren grafik yang berbeda. Komposit serat kelapa menunjukkan tingkat penyerapan air tertinggi, sedangkan komposit serat daun nanas menujukkan penyerapan air terendah. Kekuatan tarik komposit serat daun nanas menjadi yang tertinggi. Namun pada serat kelapa, serat ijuk, serat kulit jagung, dan serat tebu memiliki kekuatan tarik yang lebih rendah dibandingkan serat daun nanas, hal ini disebabkan kegagalan interface antara serat dan matriks yang kurang sempurna
Analisis Pengaruh Masukan Udara pada Ruang Bakar Boiler Pipa Api Kapasitas 100 Kg/ Jam untuk Meningkatkan Efisiensi Energi
No full textThis study aims to improve the energy efficiency of a 100 kg/h fire-tube mini boiler through combustion chamber redesign and analysis of air intake variations. The redesign was conducted using SolidWorks software with thermal insulation made of bricks, cement, sand, and refractory cement to reduce heat loss. Experiments were carried out by varying blower air velocity from 3 to 17 m/s, measuring combustion chamber temperature, steam temperature, water temperature, pressure, fuel consumption, and energy efficiency. The results show that an air velocity of 11 m/s achieved the best performance, with a maximum efficiency of 86% at 1 bar pressure. Efficiency decreased at lower air velocity due to limited oxygen supply and at higher velocity due to excessive air absorbing heat energy. The redesigned combustion chamber produced more stable combustion, reduced fuel consumption, and improved continuous steam productionThis study aims to improve the energy efficiency of a 100 kg/h fire-tube mini boiler through combustion chamber redesign and analysis of air intake variations. The redesign was conducted using SolidWorks software with thermal insulation made of bricks, cement, sand, and refractory cement to reduce heat loss. Experiments were carried out by varying blower air velocity from 3 to 17 m/s, measuring combustion chamber temperature, steam temperature, water temperature, pressure, fuel consumption, and energy efficiency. The results show that an air velocity of 11 m/s achieved the best performance, with a maximum efficiency of 86% at 1 bar pressure. Efficiency decreased at lower air velocity due to limited oxygen supply and at higher velocity due to excessive air absorbing heat energy. The redesigned combustion chamber produced more stable combustion, reduced fuel consumption, and improved continuous steam productio
Analisis Interaksi Audiens terhadap Konten Berita Internasional di Instagram ANTARA News: Pendekatan Mixed Methods pada Strategi Engagement Digital
No full textThis study aims to analyze audience interaction patterns toward international news content published on the official Instagram account of ANTARA News. Unlike previous studies focusing on distribution strategies, this research emphasizes engagement analysis using a mixed-methods approach that combines quantitative data (likes, comments, hashtags) and qualitative data (caption and visual content analysis). The study employs a mixed-methods design, collecting quantitative data from posts uploaded in June 2025 and qualitative insights from five top-engagement posts. The results indicate that audience engagement levels positively correlate with the relevance of themes, visual clarity, and narrative depth in captions. These findings support Social Media Engagement Theory (van Doorn) and Media Convergence (Jenkins), highlighting the importance of interaction-based content management in shaping editorial direction and optimizing international news distribution strategies on digital platforms.Penelitian ini bertujuan untuk menganalisis pola interaksi audiens terhadap konten berita internasional yang dipublikasikan di akun Instagram resmi ANTARA News. Berbeda dengan studi sebelumnya yang berfokus pada strategi distribusi berita, penelitian ini menitikberatkan pada analisis engagement berbasis data kuantitatif (likes, komentar, tagar) dan kualitatif (analisis isi caption dan visual). Metode yang digunakan adalah mixed methods, dengan data kuantitatif diperoleh melalui observasi unggahan periode Juni 2025 dan data kualitatif melalui analisis konten mendalam terhadap lima unggahan dengan tingkat interaksi tertinggi. Hasil penelitian menunjukkan bahwa tingkat interaksi audiens berkorelasi positif dengan relevansi tema, kejelasan visual, dan kedalaman narasi pada caption. Temuan ini mendukung teori Social Media Engagement (van Doorn) dan Media Convergence (Jenkins), serta menegaskan pentingnya pemanfaatan data interaksi dalam menentukan arah editorial dan strategi distribusi berita internasional di platform digital
INVESTIGATING THE IMPACT OF AHASLIDES ON STUDENT ENGAGEMENT IN THE ENGLISH CLASSROOM: A CASE STUDY OF YOUNG EFL LEARNERS
No full textEnglish language acquisition is essential to be developed from a young age. However, most elementary school students learning English as a Foreign Language (EFL) continue to experience numerous challenges. These are usually the result of instructional strategies that do not fully align with the requirements of 21st-century skills. Instruction is often teacher-centred, with not much peer interaction and hardly any utilization of technology to support meaningful learning experiences. This condition highlights the need to explore how interactive technologies can improve student engagement and make learning more meaningful and learner-centered. Therefore, the aim of this study is to investigate the impact of student engagement in an English private classroom in Banda Aceh where the application of the interactive technology AhaSlides was integrated in the learning process. A case study design was employed, with six students aged between 10-11 years old. Observation sheets were used as data collection instrument to assess student engagement during the lessons taught by the teacher with and without the integration of technology, AhaSlides. The findings indicate an increase in student engagement after the teacher integrated AhaSlides in the learning process in terms of positive body language, consistent focus, verbal participation, confidence, and fun and excitement. This confirms that technology use can enhance learner engagement, which is essential to the success of English language learning
ANALYSIS OF TRANSLATION METHODS AND QUALITY OF ILLOCUTIONARY ACTS IN INSTAGRAM’S AUTOMATIC TRANSLATIONS OF @FOLKATIVE CAPTIONS
No full textTechnological advancements have led to the emergence of automatic translation engines across various platforms, including Instagram. Instagram’s automatic translation feature enables cross-language information delivery. However, its effectiveness warrants further evaluation. This study aims to describe the types of illocutionary acts found in the captions of the Instagram account @Folkative using Searle’s (1976) theory, analyze the translation methods based on Newmark’s (1988) framework, and assess translation quality in terms of readability using the model proposed by Nababan et al. (2012). Employing a descriptive qualitative method, this research analyzed 67 sentences from 20 @Folkative posts (January–February 2025) and involved 72 respondents through surveys. The results show that the most dominant illocutionary act is representatives (64%), with the presence of multiple illocutionary acts and emojis functioning as expressive cues. The most frequently used translation methods are faithful (34%) and literal (33%), indicating a strong source-language orientation (77%). The average readability score of Instagram’s automatic translations is 2.46, categorized as medium, which suggests that the translations are generally understandable but often unnatural and contain occasional errors. Overall, Instagram’s automatic translation feature is capable of conveying basic meanings functionally but remains limited in terms of linguistic flexibility and cultural adaptation. Its effectiveness depends on the alignment between language function, translation method, and the nature of social media as a space for dynamic and emotionally resonant digital communication
The Procedure For Creating Site Usage Report (BAPS) Documents Using The Ioms System At PT Dayamitra Telekomunikasi Tbk
No full textThis research investigates the procedure for creating Site Usage Report (BAPS) documents using the Integrated Order Management System (IOMS) at PT Dayamitra Telekomunikasi Tbk. The telecommunication industry in Indonesia is rapidly growing, necessitating efficient management of its infrastructure, particularly telecommunication towers. The success of this infrastructure relies heavily on well-documented and organized administration to ensure transparency and efficiency in collaborations. PT Dayamitra Telekomunikasi Tbk's Sales Unit 1 is responsible for administrative sales activities and managing collaborations with tenants, including preparing BAPS documents that serve as official proof of site usage, crucial for billing and reporting. The company utilizes the IOMS digital system for efficiency and accuracy in BAPS creation, from data input to verification and approval. This study aims to explain the BAPS creation procedure, identify encountered obstacles, and provide solutions to these challenges. Findings contribute to understanding the administrative complexities and technical demands of digital document management in the telecommunications sector