Abstract:Wilayah pesisir Bengkalis didominasi oleh tanah lunak berupa lempung dan gambut yang memiliki daya dukung rendah, sehingga pemilihan sistem pondasi tiang menjadi krusial. Penelitian ini bertujuan membandingkan kapasitas…
dukung dan penurunan (settlement) antara tiang pancang kayu bakau dan tiang pancang mini beton polos precast pada kedalaman dangkal 1 meter, yang mewakili kondisi lapisan tanah lunak tipis yang umum dijumpai di dekat permukaan. Pengujian dilakukan pada konfigurasi tunggal dan kelompok (dua tiang), pada dua jenis tanah (lempung dan gambut), serta dua kondisi waktu pengamatan (segera setelah pemancangan/0 jam dan setelah 48 jam), menggunakan metode Static Loading Test (SLT) dengan pembebanan bertahap hingga tiang mengalami kegagalan (loss). Hasil menunjukkan bahwa pada kedalaman 1 m, konfigurasi kelompok meningkatkan kapasitas rata-rata 42,7% dibanding tunggal, waktu tunggu 48 jam meningkatkan kapasitas rata-rata 26,2%, tiang beton polos unggul rata-rata 21,7% dibanding bakau, dan tanah lempung menunjukkan kapasitas rata-rata 12,7% lebih tinggi dibanding tanah gambut pada kondisi setara. Temuan ini mengindikasikan bahwa pada kedalaman dangkal, perbedaan jenis tanah justru memberi pengaruh yang lebih terasa dibanding pada kedalaman yang lebih besar, sehingga pemilihan lokasi dan jenis tanah tetap perlu menjadi pertimbangan penting dalam perencanaan pondasi dangkal di wilayah pesisir.
Abstract:Tanah gambut dan tanah lempung merupakan jenis tanah lunak yang memiliki daya dukung rendah dan berpotensi mengalami penurunan besar akibat pembebanan, sehingga penggunaan pondasi tiang pancang menjadi salah satu solusi…
untuk menyalurkan beban ke lapisan tanah yang lebih dalam. Penelitian ini bertujuan menganalisis kapasitas daya dukung dan respons deformasi tiang pancang polos mini pada durasi tertanam paling awal, yaitu umur 1 hari, serta membandingkan kinerja tiang pancang beton mini polos dengan tiang pancang kayu bakau. Pengujian dilakukan secara eksperimental pada kedalaman 2 m menggunakan metode Static Loading Test (SLT) dengan penambahan beban bertahap sebesar 20 kg. Hasil pengujian pada umur 1 hari menunjukkan bahwa di tanah lempung, tiang pancang beton mampu menahan beban hingga 200 kg dengan penurunan 1,97 cm sebelum mengalami loss pada beban 220 kg, sedangkan tiang pancang bakau hanya mampu menahan beban hingga 160 kg dengan penurunan 1,69 cm sebelum loss pada beban 180 kg. Di tanah gambut, tiang pancang beton menahan beban hingga 80 kg dengan penurunan 1,87 cm sebelum loss pada 100 kg, sementara tiang pancang bakau menahan beban hingga 100 kg dengan penurunan 1,91 cm sebelum loss pada 120 kg. Hasil ini menunjukkan bahwa pada umur tertanam yang masih sangat muda, kapasitas daya dukung tiang pancang secara umum masih rendah pada kedua jenis tanah, dan tiang pancang beton menunjukkan kinerja yang relatif lebih baik dibandingkan tiang pancang bakau, terutama pada tanah lempung.
Abstract:Kegiatan magang memberikan pengalaman praktis kepada mahasiswa dalam memahami pelaksanaan fungsi pemerintahan. Artikel ini mendeskripsikan pengalaman magang di Balai Pengelola Transportasi Darat (BPTD) Kelas II Jawa Timur,…
r, khususnya dalam kegiatan Operasi Over Dimension Over Loading (ODOL). Kegiatan magang dilakukan melalui observasi langsung, pemeriksaan kendaraan, dokumentasi, serta dukungan administrasi selama kegiatan lapangan. Hasil kegiatan menunjukkan bahwa Operasi ODOL berperan penting dalam pengawasan angkutan barang dan pencegahan pelanggaran terkait dimensi kendaraan serta kapasitas muatan. Beberapa pelanggaran yang ditemukan meliputi modifikasi dimensi kendaraan dan pengangkutan barang melebihi kapasitas volume kendaraan. Pengalaman magang ini meningkatkan pemahaman mahasiswa mengenai pengawasan transportasi, koordinasi antarinstansi, dan penerapan peraturan transportasi di Indonesia.
Abstract:Teman Bus is an implementation of the Buy The Service program from the Ministry of Transportation Indonesia which was launched in 11 Indonesian cities during the pandemic and requires cashless system. This study raises the…
he question of transitioning from a free subsidy system to a paid cashless system in public transportation by 2023. What kind of promotional strategy has Teman Bus employed to capture the public's attention to adaptation? Using content analysis with a qualitative approach, through the Instagram of @teman_bus, researchers aim to examine the promotional strategies employed in the content uploads by Teman Bus. The resulting findings are that @teman_bus takes advantage of renewal along with adapting to new pandemic habits, following a great content strategy which consists of credibility, shareable, useful or fun, interesting, relevant, different and on brand such as centralized content from ministry of transportation, regularly holding giveaways and the most prominent approach is its 'on brand' consistency using repetition and persistence for uploading the content, the repetitive nature of the predetermined content template serves as a persistent promotional strategy, effectively garnering attention, facilitating learning, and promoting a shift in people's habits towards using cashless methods with Teman Bus for public transportation.
Abstract:The progression of time and advancements in technology and information have provided many benefits to human life. Technological advancement is evident in several fields, such as photography, cinematography, and design, which…
hich fall under the scope of intellectual property, particularly copyright. However, technological and digital development has also brought several global impacts that transcend national borders. Indonesia's economy has largely relied on the tourism sector which has led to the growth of the creative industries that support this sector. Advertising, as a part of the creative industries, plays an important role in society. Various strategies have been applied to compete and to excel in the business category of communication and technology services to maintain competitiveness in the digital creative communication industry of an advertising agency in Indonesia. However, these developments have made uploading someone's work common. Subconsciously, easy and practical access to the virtual world can result in copyright infringement, in which the works uploaded on digital/online platforms can be misused by irresponsible parties for personal gain. The legal regulation for intellectual property rights in Indonesia, particularly copyright, is regulated under Law Number 28 of 2014 on Copyright. As specified in Article 40 Paragraph (1) of the Copyright Law, it addresses the creations protected under its regulations. However, with the changing times and technological advancements, there has been a blur in the norms of these regulations, which need adjustments.
Abstract:The purpose of this study was to determine the effect of financial compensation and conflict on the performance of the loading and unloading warehouse employees at PT Cahaya Indah Sangsurya in Pekanbaru. The population in…
n this study were all employees of the loading and unloading warehouse who worked at PT Cahaya Indah Sangsurya Pekanbaru totaling 42 (forty-two) respondents. In this study, because the population was small (limited), it was not possible to use a sample, so the researchers took the same number of samples as the population or called a census, namely all loading and unloading employees at PT Cahaya Indah Sangsurya Pekanbaru totaling 42 (four two) respondents. The power-gathering method used in this research is field research, which is carried out by conducting direct visits to the institutions that are the object of obtaining primary and secondary data. Based on the results obtained, it can be concluded that financial compensation and work conflict affect the performance of employees at PT Cahaya Indah Sangsurya Pekanbaru. The better the value of financial compensation and the lower the value of work conflict, the higher the value of employee performance.
Abstract:This study aims to evaluate the stability of three rock slopes in an artisanal kaolin mine in Semin, Gunungkidul, Yogyakarta, Indonesia, using deterministic and probabilistic approaches, and to identify the geotechnical…
parameters most influencing slope stability. The evaluation is conducted in compliance with Indonesian Mining Regulation (Kepmen ESDM No. 1827 K/30/MEM/2018) to provide quantitative geotechnical evidence for a mine that has been operated without prior formal geotechnical assessment. Field data were collected using the scanline method to characterize rock mass discontinuities. Laboratory tests comprising direct shear and physical properties tests were conducted to determine cohesion (c), friction angle (ϕ), and unit weight (γ) for each slope. Seismic coefficient (ks = 0,0913) was incorporated as a dynamic loading parameter. Slope stability was analyzed using the General Limit Equilibrium (GLE) method to obtain the deterministic Factor of Safety (FoS). Monte Carlo simulation (N = 10.000 iterations) was applied to determine the Probability of Failure (PoF), coefficient of variation of FoS (CoV), and reliability index (β). Sensitivity analysis was performed to quantify the contribution of each geotechnical parameter to FoS reduction. Results show that FoS values ranged from 2,019 (Slope III) to 10,55 (Slope II), all exceeding the regulatory minimum of 1,1. The PoF was 0,00% for all three slopes, well below the maximum allowable limit of 25%, with reliability indices ranging from 5,70 to 31,38. The CoV of FoS ranged from 3% to 9%, indicating low dispersion in stability outcomes despite parameter variability. Sensitivity analysis identified cohesion as the most dominant parameter in Slopes I and II, contributing 28% and 31% to FoS reduction respectively, while Slope III exhibited near-equal contributions from cohesion (20%) and friction angle (21%), reflecting its lower shear strength conditions. All three slopes satisfy the acceptance criteria of Kepmen ESDM No. 1827 K/30/MEM/2018 under current geotechnical and geometric conditions. The combined deterministic-probabilistic approach provides a more comprehensive slope safety assessment than deterministic analysis alone and is recommended for application in artisanal kaolin mining operations. Cohesion is identified as the critical parameter to be monitored and preserved to maintain slope stability.
Abstract:Food security in the low-carbon transition is increasingly shaped by industrial decarbonization, environmental restoration, and circular supply-chain coordination, yet these domains are often modeled as separate sustainability…
bility agendas. This study addresses the gap by developing a governance-centered structural equation model that links sustainable industrialization, sustainable remediation, circular supply chain governance, and food-security outcomes. Using the available 455-response dataset, the empirical test operationalizes industrialization intensity (IND) as a proxy for sustainable industrialization, digital-institutional capability (DIC) as a proxy for circular governance capability, and social-economic resilience (SER) as a proxy for food-system security. Confirmatory factor analysis supports the measurement model: standardized loadings range from .778 to .849 for IND, .804 to .835 for DIC, and .800 to .843 for SER; CR values range from .901 to .914; AVE ranges from .646 to .681; and model fit is acceptable (chi-square/df = 2.108, CFI = .961, TLI = .951, RMSEA = .049, SRMR = .038). The SEM results show that IND significantly predicts DIC (beta = .537, p < .001), DIC predicts SER (beta = .424, p < .001), and IND retains a direct effect on SER (beta = .337, p < .001). The indirect effect is significant (beta = .228, 95% CI [.178, .282]). The article contributes a cautious, data-grounded framework for analyzing food security as a governance-mediated outcome of low-carbon industrial transition.
Abstract:This study investigates the tensile uplift capacity of screw piles in clay soil as an alternative anchoring system for slope stabilization in cohesive ground conditions. The research aims to address the limited availability…
ity of empirical field data on screw-pile behavior under repeated loading and to evaluate the agreement between theoretical predictions and actual in situ responses. The methodology employs an experimental approach through in situ testing with screw-pile diameters of 10 cm, 15 cm, and 20 cm, and embedment depths ranging from 0.6 m to 1.0 m. The tests were conducted under both static and repeated tensile loading using a hydraulic jack system, accompanied by vertical deformation measurements to establish load–displacement curves. Theoretical capacity was calculated using a limit equilibrium approach for comparison with experimental results. The findings reveal a nonlinear load–displacement response, characterized by initial stiffness followed by progressive deformation into the post-yield stage. At a maximum load of 2.858 tons, deformation increased with diameter, from 5.10 cm (10 cm) to 8.49 cm (20 cm). Under repeated loading, failure occurred at a lower load of approximately 1.6 tons with a maximum deformation of 1.648 cm, indicating potential capacity degradation due to cyclic loading. The comparison between theoretical and field results shows significant deviations, with analytical predictions generally underestimating the in situ capacity. This highlights the limitations of simplified models that do not fully account for shaft adhesion, installation disturbance, soil heterogeneity, pore-water pressure effects, and cyclic degradation. Overall, this study contributes valuable field pull-out test data for screw piles in clay under repeated loading, emphasizing the need for design calibration based on full-scale testing for slope stabilization applications. The results also suggest opportunities for further research involving long-term monitoring and advanced modeling of cyclic degradation.
Abstract:Negligence during duty on board has a significant negative impact on loading and unloading activities. Problems in loading and unloading activities often arise due to both internal and external factors such as human error,…
r, equipment issues, and natural conditions. This study aims to investigate negligence during duty on the MV. Andhika Kanishka ship at Muara Pantai Port, focusing on the factors, consequences, and strategies for addressing it. The research was conducted using a qualitative approach, involving direct observation, in-depth interviews, and documentary analysis, and data was triangulated for analysis. The subjects for interviews included the ship's captain and crew. The research results indicate that: 1) Factors contributing to negligence are carelessness and psychological factors; 2) Consequences include errors during loading, difficulty in closing hatches and hatch covers, and cross-deck becoming dirty; and 3) Strategies for addressing negligence during duty involve maintaining communication, shifting cargo, and cleaning the ship's deck.