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Specta Journal of Technology
Published by Institut Teknologi Kalimantan
ISSN : 25492713     EISSN : 26229099     DOI : https://doi.org/10.0610/specta.v2i3
Core Subject : Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Environmental Science
SPECTA journal is published by Lembaga Penelitian dan Pengabdian kepada Masyarakat, Institut Teknologi Kalimantan, Balikpapann Indonesia. SPECTA is an open-access peer reviewed journal that mediates the dissemination of academicians, researchers, and practitioners in the field of Physics, Mathematics, Mechanical Engineering, Electrical Engineering, Chemical Engineering, Materials and Metallurgy, Civil Engineering, Industrial Engineering, Naval Engineering, Urban Planning, Informatics, Information System, Environmental Engineering, and Ocean Engineering. SPECTA accepts submission from all over the world, especially from Indonesia.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 325 Documents
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ANALISA LINGKUNGAN KERJA DAN KESEHATAN, KESELAMATAN KERJA ( K3) (STUDI KASUS: PT. ASRINDO CITRASENI SATRIA) Nur, Muhammad
SPECTA Journal of Technology Vol 3 No 2 (2019): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v3i2.151

Abstract

Asrindo Citraseni Satria is a service company engaged in various projects providing and leasing heavy equipment for various construction activities, providing services to wellbores such asDrilling Rigsand reworking oil wells, providing services on routine service and maintenance of oil wells, as part of corporate services for our clients in the oil and gas industry. Currently the company's drilling project is underway in the Outside and NDD Area (North Duri Development) PT. Chevron Paci ? c Indonesia. The results obtained are that the working environment at the company and the implementation of the health, safety (K3) program are still very weak. This is due to lack of employee awareness and employee non-compliance in carrying out programs that have been designed by the company. Therefore, research on the work environment and health, work safety (K3), from the analysis conducted using the FTA (method, isFault Tree Analysis)known that the factors causing occupational accidents due to human negligence and the scattered environment. Then the solution provided by researchers is that companies are expected to be more stringent in implementing programs that have been designed to improve employee performance and reduce work accidents at ACS companies.   Keywords: FTA (Fault Tree Analysis), Work Accident, Occupational Health and Safety (K3)
USULAN PERBAIKAN SISTEM MANAJEMEN KESELAMATAN DAN KESEHATAN KERJA (SMK3) SEBAGAI UPAYA MEMINIMALISIR ANGKA KECELAKAAN KERJA MENGGUNAKAN METODE HAZOP (STUDI KASUS : PT. XYZ) Nur, Muhammad
SPECTA Journal of Technology Vol 3 No 3 (2019): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v3i3.152

Abstract

PT. XYZ is a company engaged in oil palm plantations and processing with its main commodity is the oil palm plantations (Elais Queineensis Jack). In 2018, thare are several occupational safety and health problems naamely occupational accidents experienced by special employees in the production processarea. The purpose of this study is to detemine the types of work accidents, the types of hazards created based on the risk materics.  This study begins by identifying Hazard and risk and then looking for potential sources of occuptional hazard so that harm can be done using the Hazard and Operability Study (HAZOP) method. The research results have been carried out based on the process (Crude Palm Oil) found 8 sources of potential danger between : Loding Ramp Station, Sterilizer Station, Tippler Station, DigesterStation, Press Station, Clarification Station, Kernel Stationdan Boiler Station, then risk assessment : low risk, medium risk, high risk and extreme risk.
CHARACTERIZATION OF BARK-MIDRIB FIBERS USING CHEMICAL TREATMENT VARIATIONS AS REINFORCEMENT IN BARK-MIDRIB FIBER COMPOSITES -, Oliever
SPECTA Journal of Technology Vol 3 No 2 (2019): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v3i2.154

Abstract

Bark midrib are not fully utilized. Utilize the characterization of the fiber and process it into polymer composites with natural fiber reinforcement. The study was conducted using a variety of chemical treatments in the form of bark midribs without treatment, delignification treatment that is immersion using NaOH media concentration of 1%, 5%, 10% with 3 hours immersion time and bleaching treatment using H2O2 media 2% concentration with immersion time 30, 60 and 90 minutes. In obtaining suitable properties, tensile tests, impact tests, Scanning Electron Microscopy (SEM) images, and Fourier-Transform Infra-Red (FTIR) tests are performed. Optimal delignification treatment at 5% NaOH concentration with a tensile test value of 25.47 MPa (increasing 76.86%) and an impact test value of 11.95 kJ/m2 (increasing 11.45%). The optimal bleaching treatment at 90 minutes immersion with a tensile test value of 35.09 MPa (increased 36.36%) and impact test value of 13.77 kJ/m2 (increased 15.22%). The results of SEM images show that the bark midrib fiber composite without treatment has a lousy interface, delignification treatment with a reasonable good interface, and bleaching treatment with an excellent interface. FTIR test results showed that the bark midrib fiber composite without treatment had a cellulose component but hemicellulose and lignin levels still dominated. Based on the results of the study, bark midrib fiber with delignification chemical treatment using 5% NaOH for 3 hours followed by bleaching treatment using 2% H2O2 for 90 minutes is the treatment with the best results and then applied to a natural fiber composite product.
ANALISIS PERAN STAKEHOLDER DALAM PENGEMBANGAN AGROPOLITAN KABUPATEN KUTAI KARTANEGARA Dewi, Maulida Rachmalia; Nurfani, Hikmah Dwi; Aisyah Borneo, Anisa Nur; Arung, Risnayanti
SPECTA Journal of Technology Vol 4 No 1 (2020): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v4i1.156

Abstract

Pengembangan kawasan agropolitan diharapkan dapat menjadi solusi pengembangan ekonomi wilayah yang akan diikuti oleh pertumbuhan ekonomi yang berkelanjutan.Namun pengembangan membutuhkan support dari pemangku kepentingan (stakeholder). Stakeholder adalah kelompok atau individu yang dapat mempengaruhi dan atau dipengaruhi oleh suatu pencapaian tujuan tertentu yang dalam hal ini ialah pengembangan kawasan agropolitan.Dalam penerapannya stakeholder dapat memberi dampak ataupun terdampak terhadap suatu perencanaan.Jurnal ini bertujuan untuk mengidentifikasi dan memetakan stakeholder berdasarkan pengaruh dan kepentingannya masing-masing dalam pengembangan kawasan agropolitan Kabupaten Kutai Kartanegara. Identifikasi dan analisa ini diperlukan untuk menelaah konsekuensi dan implikasi yang harus dipertimbangkan dalam penyusunan rencana program maupun kegiatan. Stakeholder dalam pengembangan kawasan agropolitan Kabupaten Kutai Kartanegara terdiri dari stakeholder primer , stakeholder kunci dan stakeholder sekunder. Stakeholders primer meliputi Warga Kabupaten Kutai Kartanegara yang meliputi 10 Kecamatan dengan potensi Agropolitan dan Kelompok Tani di 10 Kecamatan dengan potensi agropolitan. Stakeholders kunci meliputi UPT. Dinas Pertanian, Perkebunan dan Peternakan sebagai unsur perangkat daerah dan Stakeholders sekunder meliputi pihak eksternal.   Kata kunci :  Agropolitan,Pengembangan,Stakeholder
ADSORPSI METILEN BIRU DAN KONGO MERAH PADA ZEOLIT-X HASIL SINTESIS DARI ABU DASAR Widiastuti, Nurul
SPECTA Journal of Technology Vol 3 No 3 (2019): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v3i3.157

Abstract

Penelitian ini bertujuan untuk menentukan kapasitas adsorpsi metilen biru dan kongo merah pada zeolit-X yang disintesis dari abu dasar. Adsorben zeolite-X disintesis dari abu dasar dengan metode peleburan menggunakan NaOH  pada suhu 750oC dalam atmosfer udara. Hasil karakterisasi zeolit-X dari abu dasar dibandingkan dengan zeolit-X yang disintesis dari bahan murni. Kristalinitas dan luas permukaan zeolit-X dari abu dasar masih lebih rendah dibandingkan zeolit-X yang disintesis dari bahan murni.  Luas permukaan zeolit-X dari abu dasar adalah 250,850 m2/g, sedangkan zeolit-X dari bahan murni sebesar 472,471 m2/g. Hasil uji kapasitas adsorpsi zeolit-X dari abu dasar untuk metilen biru dan kongo merah adalah 131,6973 mg/g dan 38,12684 mg/g, berturut-turut. Proses adsorpsi mengikuti persamaan isothermal Langmuir dengan mengikuti model kinetika adsorpsi orde kedua semu. Studi termodinamika mengindikasikan bahwa proses adsorpsi terjadi secara eksoterm dan bersifat spontan pada masing-masing temperatur
BAMBOO WASTE-BASED BIO-COMPOSITE SUBSTANCE: AN APPLICATION FOR LOW-COST CONSTRUCTION MATERIALS Amatosa, Teodoro Astorga; Loretero, Michael E.
SPECTA Journal of Technology Vol 4 No 1 (2020): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v4i1.162

Abstract

Bamboo is a lightweight and high-strength raw materials that encouraged researchers to investigate and explore, especially in the field of biocomposite and declared as one of the green-technology on the environment as fully accountable as eco-products. This research was to assess the technical feasibility of making single-layer experimental Medium-Density Particleboard panels from the bamboo waste of a three-year-old (Dendrocalamus asper). Waste materials were performed to produce composite materials using epoxy resin (C21H25C105) from a natural treatment by soaking with an average of pH 7.6 level of sea-water. Three different types of MDP produced, i.e., bamboo waste strip MDP (SMDP), bamboo waste chips MDP (CMDP) and bamboo waste mixed strip-chips MDP (MMDP) by following the same process. The experimental panels tested for their physical-mechanical properties according to the procedures defined by ASTM D1037-12. Conclusively, even the present study shows properties of MDP with higher and comparable to other composite materials; further research must be given better attention as potential substitute to be used as hardwood materials, especially in the production, design, and construction usage.
KETAHANAN RUANG KAWASAN KAMPUNG BERBASIS MODAL SOSIAL STUDI KASUS: KAWASAN KAMPUNG BARU KOTA BALIKPAPAN Fitriadi, Yudi
SPECTA Journal of Technology Vol 4 No 1 (2020): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v4i1.163

Abstract

Kawasan Kampung Baru Kota Balikpapan merupakan kawasan pemukiman padat penduduk yang berada di tepi Teluk Balikpapan. Kawasan pemukiman ini berdiri di sepanjang pesisir hingga sampai ke atas perairan laut. Dalam kawasan pemukiman ini terdapat dermaga-dermaga sebagai simpul transportasi penyeberangan laut baik penumpang maupun nelayan yang cukup padat aktivitasnya sehari-hari. Keunikan kawasan ini yaitu adanya sebutan ?Texas? untuk pemukiman ini. Hal ini disebabkan oleh kejadian-kejadian tindak kriminalitas yang terjadi di kawasan tersebut sehingga muncul persepsi bahwa kawasan tersebut rawan dan berbahaya. Selain itu kondisi pemukiman yang padat dan menumuknya sampah di laut membuat kesan kumuh yang menambah ke?Texas?an kawasan ini. Dalam kawasan yang dipersepsikan ?Texas? tersebut, masyarakat kampung tetap beraktivitas sehari-hari dan memanfaatkan keberadaan pelabuhan dan kawasan industri disekitarnya untuk berpenghidupan.   Penelitian ini bertujuan untuk memahami seperti apa ketahanan ruang yang ada di dalam kawasan perkampungan tersebut. Dengan menggunakan metode induktif-kualitatif dan pendekatan fenomenologi, penelitian ini mencoba mengungkap apa yang sebenarnya terjadi dari aktivitas masyarakat penghuni kawasan ini terkait dengan ketahanan terhadap berbagai ancaman atau hambatan yang mereka alami sehari-hari. Penelitian ini mencoba mengeksplorasi bagaimana ketahanan ruang yang terjadi di kampung tersebut, yang bisa tercermin melalui bentukan fisik, perilaku, budaya, dan aktivitas masyarakat sehari-hari.   Hasil dari penelitian ini menunjukkan bahwa ketahanan ruang masyarakat Kampung Baru Kota Balikpapan dilandasi oleh modal sosial yang dimiliki masyarakat. Hal ini ditunjukkan dengan penguatan ketahanan ruang yang terjadi yaitu adanya kelembagaan yang aktif sebagai motor penggerak sistem sosial masyarakat serta adaptasi komunal masyarakat dalam merespon dan meghadapi ancaman dan gangguan dari kerawanan kriminalitas yang terjadi.   Kata Kunci: Ketahanan ruang, fenomenologi, adaptasi, kelembagaan
PEMANFAATAN HISTOGRAM EQUALIZATION PADA LOCAL TRI DIRECTIONAL PATTERN UNTUK SISTEM TEMU KEMBALI CITRA Husain, Nursuci Putri; Aji, Nurseno Bayu
SPECTA Journal of Technology Vol 4 No 1 (2020): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v4i1.164

Abstract

Abstract   Local tri-directional pattern (LtriDP) is a method of extracting local intensity features from each pixel based on direction. However, this method has not been able to provide good performance in extracting features for image retrieval. One reason that makes image retrieval performance worse is the effect of lighting. Lighting can cause large variations between images. This study proposed utilization of Histogram Equalization (HE). Histogram equalization is a functional method of stretching gray degrees and expanding image contrast. This will make variations in the gray level of the original image can be controlled. There are several main stages in this study, firstly query image and image dataset will be preprocessed with histogram equalization. After that, the image is extracted by a tri-directional pattern and magnitude pattern are searched. A tri-directional pattern will produce two histograms, while a magnitude pattern produces one histogram. The three histograms are combined or joint histogram is performed. Histogram that has been joint is a feature vector. The feature vector will be calculated using a similarity measurement Canberra. After that, an image similar to the query image will be obtained. The experiment was conducted using 3 face datasets namely ORL, BERN, and YALE. The average recall value was 0.422 for the ORL dataset, 0.50 for the BERN dataset, and 0.63 for the YALE dataset. The evaluation show, the proposed method can be used as a process of improving the quality of image datasets in the image retrieval system.  Keywords: Image retrieval system, Local tri-directional pattern, Streching Image, Histogram Equalization, Similarity Measurement Canberra. Abstrak   Local tri-directional pattern (LtriDP) merupakan salah satu metode ekstraksi fitur intensitas lokal dari setiap piksel berdasarkan arah. Namun, metode ini belum mampu memberikan performa yang baik dalam mengekstrak fitur untuk temu kembali citra. Salah satu alasan yang membuat performa temu kembali citra tidak baik adalah pengaruh pencahayaan. Pencahayaan dapat menyebabkan variasi besar antar citra. Penelitian ini mengusulkan pemanfaatan Histogram Equalization (HE). HE merupakan metode fungsional dalam peregangan derajat keabuan dan memperluas kontras citra. Hal ini akan membuat variasi level keabuan dari citra asli dapat terkendali. Ada beberapa tahapan utama dalam penelitian ini, yang pertama citra query dan citra dataset akan terlebih dahulu di preprocessing dengan histogram equalization. Setelah itu, citra tersebut diekstrak fiturnya, dicari pola tri-directional dan pola magnitude. Pola tri-directional akan menghasilkan dua histogram, sedangkan pola magnitude menghasilkan satu histogram. Ketiga histogram tersebut kemudian disatukan atau dilakukan joint histogram. Histogram yang telah dijoint merupakan vektor fitur. Vektor fitur tersebut akan dihitung rankingnya menggunakan pengukuran jarak canberra. Setelah itu, akan didapatkan citra yang mirip dengan citra query. Uji coba dilakukan dengan menggunakan 3 dataset wajah yaitu ORL, BERN, dan YALE. Nilai rata-rata recall yang di dapatkan 0,422 untuk dataset ORL, 0,50 untuk dataset BERN, dan 0,63 untuk dataset YALE. Dari hasil evaluasi tersebut, dapat disimpulkan metode yang diusulkan dapat digunakan sebagai proses peningkatan kualitas dataset citra pada system temu kembali citra.  Keywords: Sistem Temu Kembali Citra, Local tri-directional pattern, Peregangan Kontras, Histogram Equalization, Perhitungan Jarak Canberra.  
KAJIAN BEBAN EMISI PENCEMAR UDARA (NOX, CO, HC, PM10, SO2, CO2) SEKTOR TRANSPORTASI DARAT DI LINGKUNGAN INSTITUT TEKNOLOGI KALIMANTAN BERDASARKAN JAM SIBUK DENGAN METODE TIER 2 Rahendaputri, Chandra Suryani; Maria, Madah; Fausia, Rizkina Nurul
SPECTA Journal of Technology Vol 4 No 1 (2020): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v4i1.167

Abstract

Kajian beban emisi telah dilaksanakan di lingkungan Institut Teknologi Kalimantan (ITK) dalam kurun waktu satu hari. Perhitungan beban emisi CO, NOx, PM10, SO2, HC dihitung menggunakan metode TIER 2, yaitu dengan  cara menghitung perjalanan rerata kendaraan, atau Vehicle Kilometer Traveled (VKT) dan kemudian dikalikan dengan faktor emisi masing-masing jenis pencemar untuk tiap jenis kendaraan berbeda. Sedangkan untuk pencemar CO2 menggunakan metode perhitungan jumlah konsumsi bahan bakar dikalikan dengan faktor emisi.  Setelah perhitungan didapatkan bahwa jenis kendaraan yang mendominasi adalah sepeda motor. Emisi terbesar terjadi pada pukul 09.30-10.30 yaitu pada jam peralihan perkuliahan sesi 1 dan sesi 2, yang dapat diidentifikasi sebagai jam sibuk. Emisi pencemar terbesar adalah CO2 yaitu sebesar 248.31 Kg/hari diikuti oleh CO sebesar 41.53 Kg/hari. Pencemar udara yang paling sedikit diemisikan adalah SO2 yaitu hanya sebesar 0.028 Kg/hari. Pencemar lainnya yaitu NOx sebesar 0.986 Kg/hari dan PM10 sebesar 0.656 Kg/hari. Dominasi emisi sepeda motor terlihat jelas pada pencemar CO, HC dan CO2, sedangkan pada pencemar lainnya, mobil bensin maupun solar juga berperan dalam mengemisikan pencemar tersebut.
ANALISA PERHITUNGAN PEKERJAAN REPARASI KAPAL DENGAN METODE CRITICAL PATH METHOD (CPM) Muhammad, Alamsyah bin Muh. Saleh Alam
SPECTA Journal of Technology Vol 4 No 1 (2020): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v4i1.172

Abstract

Meranti Nusa Bahari carries out two types of businesses, firstly ship repair and secondly ship building services. Technical analysis of ship repair work using a simple table method. The purpose of this research is to find out how long the ship repairs. The method used is CPM (Critical Path Method). The results of this research are technical analysis of work using a simple table that is able to repair one unit of ship within 22 working days and 20 ships in a year. While the analysis with CPM method found 18 working days per unit of ship and 25 units of ships in a year. There has been a decrease in working time per ship unit of 4 working days which can be used to work on other vessels, with an increase in the number of vessels of 4~5 ships in a year where there is an increase in repair productivity by 20%.

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