Center for Scientific Publication
Not a member yet
4029 research outputs found
Sort by
Closure
No full textJournal of Infrastructure & Facility Asset ManagementVolume 5, Issue 1, April 2024 (e) ISSN 2656-8896 (P) ISSN 2656-890X JIFAM, Vol.5, Special Issue 1, February 2023The Dynamics of State-Owned Assets Insurance Regulation Drafting from Regulation Theory Lens Fakhri Nurfaiz & Taufik Raharjo Alternative of Soil Improvement Methods on Organic Soil Using Preloading and Vertical Piles for Embankment with Varied Heights. Case Study: Construction of Batanjung Port Access Road in Pulang Pisau Regency, Central Kalimantan Dedy Manudianto, Noor Endah & Hardy Pangihutan SiahaanJIFAM, Vol.4, Issue 2, August 2022Comparison of Embankment Reinforcement Requirements with Geotextile on Soft Soil with 2D and 3D Slope Stability Analysis Methods Nur Arfiati Shoffiana, Yudhi Lastiasih & Trihanyndio Rendy Satrya Evaluation of Smart Mobility Indicators in Responding COVID-19 Pandemic in Indonesia Shanty Y. Rachmat & Ganesha G. Mangkoesoebroto Geotechnical Mapping for Soil Physical and Mechanical Parameters and Hard Soil Depth in Badung Regency Zefira Wisna Maulidha, Trihanyndio Rendy Satrya & Yudhi Lastiasih The Physical Integration of Smart Transportation Characteristics of Suroboyo Bus and the Feeder Cindy Nur Aziza Rahman, Eko Budi Santoso & Siti Nurlaela The Adequacy of Public Bus Fleet During the Covid-19 Pandemic (Case of The Transjakarta Corridor 1 DKI Jakarta, Indonesia) Amanda Dian W.Kusumawardani, Ibnu Syabri, Fika Novitasari & Naya C. Drestalita
The Construction of Mathematical Model for the Mechanism of Protein Synthesis Involving mTORC1 from the AMPK Pathway
Get PDFThis study discusses the construction of mathematical models for the mechanism of protein synthesis involving the main regulator mTORC1 gene which is described in the singular pathway mTOR of the AMPK pathway. The genes in question include: AMPK, TSC2, Rheb, mTORC1 and S6K. The method used for this research is divided into two stages, namely pathway analysis for the mechanism of protein synthesis and the second is the formulation of mathematical models. Pathway analysis is performed as a reference in describing interactions in the form of kinetic reaction schemes. After the interaction scheme is created, it is then formulated into a mathematical model with the independent variable being time. Mathematical models for the mechanism of protein synthesis involving mTORC1 of the AMPK pathway in the form of ordinary time-dependent differential equations involving independent variables [TSC2], [pAMPK], [pTSC2], [Rheb^{GTP}], [Rheb^{GDP}], [mTORC1], [Raptor], [aRaptor], [Deptor], [PRAS40], [mTOR], [amTORC1], [mLST8], [S6K1] and [pS6K1]
Data Quality Management Strategy To Improve Remote Sensing Data Quality: A Case Study On National Remote Sensing Data Bank
Get PDFNational Remote Sensing Data Bank (Bank Data Penginderaan Jauh Nasional; BDPJN) is the operational implementer in the field of remote sensing to meet the needs of national data on remote sensing images. Remote sensing images are essential in the Indonesian government for various needs, such as in regional (spatial planning, city boundaries), disaster (forest fires, floods, landslides, earthquakes, volcanic eruptions), plantation, natural resources, and environment sectors. Quality management of BDPJN’s satellite images becomes challenging due to the increasing number of products owned and users annually. For this reason, a data quality management strategy is needed to guarantee and improve the quality of BDPJN data. To develop such a strategy, an assessment of the maturity of BDPJN’s data quality man- agement was conducted from the aspect of data processing by implementing Loshin’s Data Quality Management Maturity Model (DQM3) to find out the characteristics that were lacking. The results were then mapped based on Data Quality Management (DQM) activities in DAMA-DMBOK as a recommendation for data quality management strategies. This study applies quantitative research where data collection was done by distributing questionnaires to 24 respondents who are data stewards of medium, high, and very high-resolution mosaic images. Based on the assessment, BDPJN is in the maturity level of Defined to Managed. The recommendations are 21 DQM activities that can be carried out to improve BDPJN data quality
Environmental Effects of Sulphate on Conventional Concrete Based on Portland Composite Cement
Get PDFConcrete performances have weaknesses; one of those weaknesses is that it is significantly affected when put in a high sulfate and chloride environment. This study aims to investigate sulfate's effect on PCC concrete's performance. In this research, PCC concrete was immersed in water for 28 days and conducted after the casting. After being soaked in water, three immersed specimens were removed and immersed in magnesium sulfate solution for 24 days and 84 days, whereas three others were removed and immersed in natrium sulfate solution for 24 days and 84 days. The observation showed that PCC concrete's average compressive strength test with water immersion was 42.17 Mpa. It meets the SNI 2847:2019 Indonesian standard for sulfate classification S1. The specimens decreased to 30.74 Mpa after being soaked in the magnesium sulfate solution for 28 days and again reduced to 25.39 Mpa at 84 days. The average compressive strength of specimens bathed in the sodium sulfate solution for 28 days was 32.19 Mpa. It decreased to 28.03 Mpa at the age of 84 days. The results of this study show that the compressive strength of PCC concrete soaked in sodium sulfate meets the SNI 2847:2019 standard for sulfate classification S1, which is more than 28 Mpa. The compressive strength of PCC concrete immersed in magnesium sulfate for 1 month (28 days) is more than 28 MPa. It meets the standard as well. Yet, the compressive strength of PCC concrete soaked in magnesium sulfate for 3 months (84 days) does not meet the standard
Measurement of Recyclable Raw Materials Trading for Circular Economy Implementation
Get PDFIn the context of resource scarcity and food energy security in the midst of increasing food demand, the circular economy (CE) is a promising strategy to address the sustainable use of resources. This article aims to propose measurement elements in raw materials with recyclable concepts in implementing CE in the food and beverage industry. However, the CE framework has not been adapted to the needs of the Food And Beverages Industry. This article attempts to address this gap by analyzing the range of available indicators to measure trade in recyclable raw materials, namely by looking at the difference between the value of exports and imports. Thus, the differences in the CE framework can theoretically be adapted to the production system in the Food And Beverages Industry. So that the implementation of CE can be implemented in accordance with its functions, strategies and principles in managing a business model that replaces the concept of "end of life" by recycling raw materials which aims to create a quality environment, economic prosperity and benefits for future generations
Structure Identification of Nanopowder TiO2 Synthesized by Coprecipitation Method
Get PDFTitanium dioxide, or TiO2 is a semiconductor material with many advanced applications, such as photocatalysts. Generally, TiO2 has three primary forms of crystal structure: anatase, brookite, and rutile. Among these types of crystal structures, anatase has good properties in photocatalysts application due to its band gap value (3.20eV) and stability. Further, there are many methods to synthesize TiO2, such as sol-gel, hydrothermal method, etc. Still, the copreciptation method has a suitable method because it is easy to produce, high pure product and low cost. However, many parameters control the quality of TiO2 itself: pH, temperature, time and mechanical process. Especially for the mechanical process, no results were reported about structure identification of TiO2 at mixing time below 25 hours. In this research, titanium dioxide (TiO2) powder has been investigated using coprecipitation method and TiCl3 as a raw material. The TiO2 was synthesized by mixing the time duration at 5, 10 and 25 hours in this method. Analysis using x-ray diffraction shows that all the samples have an anatase phase. Further, Rietveld refinement analysis shows that mixing duration time does not significantly affect the lattice parameters
Redesigning a 300 ft Barge as a Floating Hotel to Support Tourism in the Thousand Islands
Get PDFThe Thousand Islands is a marine tourism area located around Jakarta, which has several beautiful and charming islands. Many cargo barge decks are not operating because natural resources are starting to decline. One of the innovations to increase tourist attraction is by designing a floating hotel using a 300 ft barge as a supporting facility in the Thousand Islands. Determination of the main size of the ship using the method of comparison of several barge sizes of 300 ft and stability calculations using the A.N-Krylov method with maxsurf software. Obtained ship size LOA = 91.5 m, B = 27.5 m, H = 5.5 m, T = 4.3 m. The superstructure modification has three decks, each deck being 3 m high with a different length. The results of the floating hotel design have a total of 52 rooms that can accommodate 116 visitors. There are superior room types, deluxe rooms and suite rooms and are equipped with other facilities. The floating hotel's safety equipment includes 8 lifebuoys, 188 lifejackets, 4 lifeboats and 8 liferafts. The stability of the floating hotel meets the intact stability criteria of the IMO standard A.749(18) Ch3 - Design criteria applicable to all ships
Penilaian Pengaruh Aspek Place Identity Familiarity dan Attachment terhadap Daya Tarik Ruang Publik di Surabaya Utara
Get PDFSaat ini, banyak kota di Indonesia yang berlomba- lomba menciptakan citra dan identitasnya sendiri terkait peningkatan sektor pariwisata yang berkelanjutan. Selain itu, identitas kota telah menjadi isu penting di sektor perencanaan dan desain kota saat ini. Banyak dari kota-kota ini menjadikan identitas mereka terkait dengan warisan budaya penting untuk kegiatan branding kota mereka. Hal ini dilakukan dengan tujuan untuk meningkatkan keberlanjutan pariwisata, serta mendorong dan menumbuhkan ekonomi lokal. Penelitian ini membahas bagaimana penilaian kualitas ruang publik khususnya dari aspek attachment dan familiarity dalam teori place identity berperan dalam meningkatkan daya tarik menurut masyarakat. Penelitian ini menggunakan strategi gabungan yaitu kualitatif dalam mengambil interpretasi dari responden dan korelasional dengan kuantitatif untuk memvalidasi hasil kualitatif. Hasil yang diperoleh dari penelitian ini adalah bahwa aspek familiarity memiliki pengaruh positif lebih dominan dan signifikan terhadap daya tarik ruang publik dari perspektif pengunjung. Sementara dari sudut pandang masyarakat sekitar, aspek attachment justru memiliki pengaruh lebih dominan terhadap daya tarik ruang publik. Dengan begitu, dapat disimpulkan bahwa perbaikan atau peningkatan pada aspek familiarity dan attachment akan meningkatkan daya tarik pariwisata pada ruang publik di kawasan Surabaya Utara
Penentuan Parameter Indeks Kompresi Tanah Berdasarkan Rumus Empiris (Studi Kasus: Bontang, Kalimantan Utara)
Get PDFPenentuan parameter tanah merupakan masalah geoteknik yang umum dalam proyek konstruksi. Dalam beberapa proyek, parameter tanah seperti indeks kompresi (cc) diperoleh dengan penyelidikan laboratorium. Namun, data laboratorium tidak selalu tersedia. Sehingga menggunakan korelasi atau rumus empiris adalah salah satu solusi untuk menemukan parameter yang paling dekat dengan lapangan. Untuk perhitungan penurunan tanah, indeks kompresi merupakan salah satu data yang paling penting. Indeks kompresi tanah adalah perbandingan antara beda tekanan dan angka pori pada tanah dengan beban tertentu. Dalam banyak kasus, nilai indeks kompresi yang diperoleh dari laboratorium dan rumus empiris memiliki nilai yang beragam. Oleh karena itu menentukan indeks kompresi berdasarkan korelasi dan jenis tanah merupakan tantangan baru. Pada penelitian ini dilakukan pengkajian penentuan indeks kompresi tanah berdasarkan beberapa rumus empiris yang berkaitan dengan pemampatan tanah dan beban di lapangan. Lokasi penelitian berada di area reklamasi untuk shelter Pupuk Kaltim di Bontang Utara, Kalimantan, Indonesia. Hasil penelitian menunjukkan bahwa rumus empiris dari Ardana Mochtar memiliki nilai yang paling mendekati data lapangan. Lokasi dan jenis tanah pada perumusan empiris, nilai kritis penurunan, dan beban yang terjadi di lapangan harus diperhatikan dalam penentuan indeks kompresi
Prediksi Harga Ekspor Non Migas di Indonesia Berdasarkan Metode Estimator Deret Fourier dan Support Vector Regression
Get PDFEconomic growth is one of the indicators in the Sustainable Development Goals (SDGs) on increasing economic activity. One of the activities that supports the running of the economy is trade between countries, such as exports. In Indonesia, non-oil and gas exports have played an important role in total exports in recent years, including coal exports being the main export. Therefore, price predictions for Indonesia's non-oil and gas exports are very important as material for evaluating policies to encourage economic growth. This is the main focus of this research. In this study, non-oil and gas export price forecasts are made taking into account current issues such as the COVID-19 pandemic and the Russia-Ukraine war. The accuracy of the model obtained from the Fourier series estimator and Support Vector Regression (SVR) is investigated by comparing the Mean Absolute Percentage Error (MAPE) value to predict Indonesia's non-oil and gas export prices. The results of the study show that the COVID-19 pandemic and the Russia-Ukraine war have had a significant impact on non-oil and gas export prices. The SVR model with the Radial Basis Function (RBF) kernel shows better accuracy than the Fourier series estimator model of the cos sin function, with MAPE values of 9.29 and 15.26% for each test data, respectively. Therefore, this study is expected to be the basis for formulating policies related to regulating non-oil and gas export processes to support economic growth in Indonesia