63 research outputs found
PeriscOApe ULiège 2018-2020 Data1
No full textThis dataset contains enriched metadata of journal articles published between 2018 and 2020 and for which at least one (co)author is affiliated with the University of Liège.
Data was aggregated and enriched from various sources, incuding OpenAlex and the University of Liège's institutional repository (ORBi). Particular data is then used to create visualizations on the PeriscOApe platform, a website that seeks to monitor the development and various types of Open Acess in the Wallonia-Brussels Federation
ANALISIS HARGA POKOK PRODUKSI DENGAN MENGGUNAKAN ACTIVITY BASED COSTING SYSTEM PADA CV TELAGA KENCANA PALEMBANG
Get PDFAnalysis of Cost of Production by Using Activity Based Costing System At CV Telaga Kencana Palembang
M Dony Julio Pratama, 2016 (xv + 75 page)
Email :[email protected]
CV Telaga Kencana Palembang is one of the companies engaged in the timber industry. The company addresses in Jl. K.H.A. Azhari 55, Palembang. The author uses several methods to get data from companies such as observation, interviews, and literature. The analysis of object in this final report is a calculation of the cost of production by using Activity Based Costing. Based on the data that author get that report the cost of production of products two doors dresser, oshin tables, and Taulet Palembang in 2015, the authors found some problems, such as cost of raw materials and factory overhead costs is not taken away, and the cost of depreciation of fixed assets is not taken into account in determining the cost of production so that the cost of production by companies is greater than the cost of production according to the Activity Based Costing. The problem faced by the company can be examined by identifying and classifying charges based on the activities undertaken in connection with the production process. To overcome existing problems, the author tries to give some suggestions that might be beneficial for the company, among other companies should use Activity Based Costing in the calculation of production costs
Target Strength Ikan Kerapu Cantang Terhadap Panjang Total Ikan Menggunakan Singlebeam Echosounder
Get PDFIkan Kerapu Cantang (Epinephelus fuscoguttatus >< Epinephelus lanceolatus) adalah salah satu produk budidaya utama di Indonesia dan mempunyai nilai harga yang tinggi yaitu berkisar mulai dari Rp. 110.000 hingga Rp.120.000/kg dan sudah menjadi komoditas ekspor penting terutama ke Hongkong, Jepang, Singapura dan Cina. Metode Hidroakustik merupakan metode deteksi objek (ikan) bawah air baik di kolam maupun di laut dan Nilai Target Strength (TS) merupakan parameter utama untuk menduga objek dibawah air, oleh karena itu perlunya dilakukan penelitian terkait nilai Target Strength (TS) dengan tujuan untuk mengetahui nilai hambur balik Ikan Kerapu Cantang yang selanjutnya akan dihubungkan dengan ukuran ikan tersebut. Berdasarkan hasil pengukuran terhadap 30 sampel Ikan Kerapu Cantang yang terdiri dari berbagai macam ukuran, maka nilai TS yang didapat berkisar dari -56,17 hingga -40,4. Hubungan linier positif dapat terlihat dari hasil uji statistik yaitu mempunyai nilai R2 0,8. Berdasarkan hasil statistik di atas bahwa nilai rata-rata TS dipengaruhi nilai TL Ikan Kerapu Cantang. Adapun hasil dari uji statistik tersebut didapatkan persamaan sebagai berikut: TS200kHz = -87,92+42,75log10 (TL) (95% CI: -44,39 to -49,01 dB, 9 to 10 TL mm; R2=0,83).Ikan Kerapu Cantang (Epinephelus fuscoguttatus >< Epinephelus lanceolatus) adalah salah satu produk budidaya utama di Indonesia dan mempunyai nilai harga yang tinggi yaitu berkisar mulai dari Rp. 110.000 hingga Rp.120.000/kg dan sudah menjadi komoditas ekspor penting terutama ke Hongkong, Jepang, Singapura dan Cina. Metode Hidroakustik merupakan metode deteksi objek (ikan) bawah air baik di kolam maupun di laut dan Nilai Target Strength (TS) merupakan parameter utama untuk menduga objek dibawah air, oleh karena itu perlunya dilakukan penelitian terkait nilai Target Strength (TS) dengan tujuan untuk mengetahui nilai hambur balik Ikan Kerapu Cantang yang selanjutnya akan dihubungkan dengan ukuran ikan tersebut. Berdasarkan hasil pengukuran terhadap 30 sampel Ikan Kerapu Cantang yang terdiri dari berbagai macam ukuran, maka nilai TS yang didapat berkisar dari -56,17 hingga -40,4. Hubungan linier positif dapat terlihat dari hasil uji statistik yaitu mempunyai nilai R2 0,8. Berdasarkan hasil statistik di atas bahwa nilai rata-rata TS dipengaruhi nilai TL Ikan Kerapu Cantang. Adapun hasil dari uji statistik tersebut didapatkan persamaan sebagai berikut: TS200kHz = -87,92+42,75log10 (TL) (95% CI: -44,39 to -49,01 dB, 9 to 10 TL mm; R2=0,83)
Analisis Target strength Kuda Laut (Hippocampus comes) Terhadap Ukuran
Get PDFSeahorses are marine biota that have distinctive body characteristics that can be distinguished from other fish. Male seahorses have brood pouches. Estimation of the presence of seahorses is still very limited, an effective approach is needed to detect the presence of seahorses. The approach is carried out with an underwater acoustic approach to predict the presence of seahorses by looking at observations, namely the strength of the target. This study aims to analyze the value of Target Strength (TS) of seahorses based on size. The method used is the method of collecting experimental data. The seahorse used collected ten samples. The object placement method uses the ikat method. The TS response value was recorded using a Simrad EK-15 instrument with a frequency of 200kHz and morphometric measurements were performed. Morphometric measurements in the form of standard length measurements, seahorse head length to record acoustic signals in 3 conditions, namely females, non-pregnant males and pregnant males. Analysis of the relationship between the value of the target strength with seahorse morphometrics using statistical analysis, namely linear regression, ANOVA analysis and Tukey's follow-up test. The resulting seahorse is a species of Hippocampus. The distribution range of the resulting TS response values ranges from -58.38 dB to -67.75 dB. The result of this study is the influence of the measuring variable on the TS value formed Kuda laut merupakan biota laut yang memiliki karakteristik tubuh unik yang dapat di bedakan dari ikan lainnya. Pendugaan keberadaan kuda laut di alam masih sangat terbatas, saat ini masih menggunakan teknik visual statistik yang bersifat sampling point. Pendekatan underwater acoustic diperlukan untuk menduga keberadaan dari kuda laut di perairan, dibutukan informasi nilai pantulan akustik yang dikenal dengan target strength. Penelitian ini bertujuan untuk menganalisis nilai Target strength (TS) dari kuda laut berdasarkan ukuran. Metode yang perekaman sinyal akustik pada lingkungan alami dari habitat kuda laut. Kuda laut yang digunakan berjumlah sepuluh sampel denan metode pemeruman menggunakan thetred method. Perekaman nilai respon TS menggunakan alat scientific echosounder Simrad EK-15 frekuensi 200kHz. Pengukuran morfometrik berupa pengukuran panjang standar, panjang kepala. Data akustik dianalisis dengan perangkat lunak Sonar-5 Pro, selanjutnya analisis statistik regresi linear. Hasil penelitian menujukan hubungan nilai target strength rata-rata berkisar antara -58,38 (SD±2,93) sampai dengan -67,75 dB (SD±1,26). Hubungan TS terhadap panjang standar (PS) menunjukan hubungan positif, semakin besar ukuran kuda laut maka semakin besar pula nilai TS. Dengan formulasi TS = 20,62 log10 (PS) – 84,32 [dB], dengan koefisien determinasi sebesar 14,1 %. Sementara itu hubungan TS terhadap Panjang Kepala (PK) diformulasikan menjadi TS = 11,43 log10 (PK) – 67,72 [dB] dengan koefisien determinasi 4,1 % lebih rendah dibandingkan dengan variabel panjang standar. Hasil ini telah mempertegas bahwa ukuran kuda laut dapat mempengaruhi nilai TS
KARAKTERISTIK PASANG SURUT DI PERAIRAN PULAU BINTAN BAGIAN TIMUR MENGGUNAKAN METODE ADMIRALTY
No full textABSTRACTThis study aims to analyze of tidal in the Eastern Bintan Island waters, including the harmonic constant value, water level elevation and type of tidal. This study used tidal observation data obtained from the Badan Informasi Geospasial (BIG) during 2015-2019. The tidal harmonic constant value is calculated using the Admiralty method, which is one of the harmonic methods that calculates the mean sea level and the sinuoidal function. Admiralty calculations used schemes and tables which are operationalized by Excel software. The water level field observation was carried out in August 2020 with the Tide master instrument. The analysis results obtained 9 harmonic constants which are then used to determine the Formzahl number and water level elevation. Furthermore, the calculation results of harmonic constants and water level elevations are used in tidal forecasting for the next 8 months using Worldtides software. The results showed that the Eastern Bintan Island waters had a tye of Mixed Tide Prevailing Semi Diurnal. Meanwhile, the water level elevation has a Mean High Water Spring (MHWS) of 403.2 cm (SE±3.2), Mean High Water Level (MHWL) of 381.6 cm (SE ± 3.47), Mean Sea Level (MSL) value was 268.2 cm (SE±3.1), Mean Low Water Level (MLWL) was 154.6 cm (SE±2.77) and Mean Low Water Spring (MLWS) was 133 cm (SE±3.1). Tide prediction accuracy test results obtained RMSE value generated at 0.098. These results indicate a small error rate, it can be used as a reference for development planning in the Eastern Bintan Island waters.Keywords: Admiralty, Eastren Bintan Island, Tidal, Water level elevationABSTRAKPenelitian ini bertujuan menganalisis karakteristik pasang surut di Perairan Pulau Bintan Bagian Timur mencakup nilai konstanta harmonik, elevasi muka air dan tipe pasang surut. Penelitian menggunakan data observasi pasang surut yang diperoleh dari Badan Informasi Geospasial (BIG) selama tahun 2015-2019. Nilai konstanta harmonik pasang surut dihitung menggunakan metode Admiralty, yakni merupakan salah satu dari metode harmonic yang perhitungannya melibatkan kedudukan permukaan air laut rata-rata dan fungsi sinuoidal. Perhitungan Admiralty menggunakan bantuan skema dan Tabel yang dioperasionalkan dengan perangkat lunak Excel. Pengamatan lapang tinggi air dilakukan pada Bulan Agustus 2020 dengan instumen Tide master. Hasil analisis diperoleh 9 konstanta harmonik yang selanjutnya digunakan untuk menentukan bilangan Formzahl dan elevasi muka air. Selanjutnya hasil perhitungan konstanta harmonik dan elevasi muka air digunakan dalam peramalan pasang surut untuk 8 bulan kedepan menggunakan perangkat lunak Worldtides. Hasil penelitian menunjukan wilayah peraian Pulau Bintan Bagian Timur memiliki tipe pasang surut campuran condong harian ganda. Sedangkan elevasi tinggi muka air memiliki rerata tinggi muka air pada saat pasang purnama (MHWS) sebesar 403,2 (SE±3,2) cm, rata-rata MHWL sebesar 381,6 (SE±3,47) cm, rata-rata nilai MSL 268,2 (SE±3,1) cm, rata-rata MLWL 154,6 (SE±2,77) cm dan rata-rata MLWS sebesar 133 (SE±3,1) cm. Hasil uji akurasi prediksi pasang surut diperoleh nilai RMSE yang dihasilkan sebesar 0,098. Hasil ini menunjukan tingkat kesalahan yang kecil, dapat digunaan sebagai bahan referensi untuk perencanaan pembangunan di perairan Pulau Bintan Bagian Timur.Kata kunci: Admiralty, Elevasi muka air, Pasang surut, Pulau Bintan Bagian Timu
Characteristics of coastal ecosystems in Tering Bay, Batam: Analysis of mangroves, seagrass, and coral reefs
No full textTering Bay in Batam City is a coastal area with potential ecological changes if reclamation activities are carried out. This study aims to describe the baseline condition of the aquatic ecosystem by identifying the distribution of mangrove, seagrass, and coral reef species and analysing ecosystem conditions based on density, coverage, and damage levels. A mixed-method approach was applied using purposive sampling at seven mangrove stations, six seagrass stations, and seven coral reef stations. Mangrove data were collected using quadrat and line transect methods, seagrass through 100-meter quadrat transects, and coral reefs using the Line Intercept Transect (LIT) method. Results showed mangrove density ranged from 700 to 2,600 trees per hectare, dominated by Rhizophora apiculata. Seagrass coverage varied between 23.49% and 69.32% (categorized as sparse to dense), dominated by Enhalus acoroides and Halophila major, while absent at two stations. Coral reef cover was generally poor (0–8.2%), except for two stations categorized as moderate (23.9–28.5%). Overall, these baseline findings indicate heterogeneous coastal ecosystems influenced by anthropogenic pressures, particularly shipping and sedimentation. This fundamental information is expected to serve as a reference for sustainable coastal ecosystem management, especially in anticipating additional pressures from future reclamation activities
OPTIMALISASI PELAKSANAAN BONGKAR MUAT OIL PRODUCT DI MT. PATRA TANKER 3
Get PDFFandhy Dony Wicaksono, 2017, 49124381 N, “ Optimalisasi Pelaksanaan Bongkar Muat Oil Product di MT. Patra Tanker 3 ”, Diploma IV , Nautika, Politeknik Ilmu Pelayaran Semarang, Counselour : (I) Sahabuddin Sunusi (II) Yustina Sapan.
Oil production rising rapidly from oil fields, refineries and depots - oil depot in Indonesia. It makes participation of oil tankers becomes more vital than ever. Loading and discharging equipment on the tanker must always be in good condition in order to support the process of loading and discharging. Optimization of loading and discharging must be supported by good communication between the ship at the loading or discharging port. This research is focused on the process of loading and discharging at MT. Patra Tanker 3 which is frequently delays due to human factors and factors of equipment and efforts to optimize the loading and discharging activities. The research methodology that author use is a descriptive qualitative method. The author presents the data according to the results of the observation as authors did the sea project, interviews with the officers of MT. Patra Tanker 3 and literature study that the author obtained from books, internet and literature relating to loading and discharging process of oil product. Based on the research that the author carried out, it can be seen that the constraints that occur when loading and discharging process in MT. Patra Tanker 3 are the lack of understanding, knowledge and awareness of the crew about the dangers and how the loading and unloading procedures in accordance with the standards as well as safe. In addition the process of loading and discharging at MT. Patra Tanker 3 are constrained by a cargo pump is not functioning optimally. From these problems, it’s necessary to give the entire crew training regarding the loading and discharging process in accordance with the procedures and also the operation of loading and discharging equipment is right and how to taking care of the loading and discharging equipment. Besides, the ship’s crew also had to check periodically for loading and discharging equipment.
Keywords : Oil Product, Loading, Discharging, descriptive qualitative
An Examination of Climate Change Phenomena in Coastal Areas and Small Islands (Case Study: Mapur Island, Bintan Regency): Kajian Fenomena Perubahan Iklim Pada Wilayah Pesisir Dan Pulau-Pulau Kecil (Pulau Mapur Kabupaten Bintan)
No full textClimate change has affected the availability of local food on small islands such as Mapur Island in Bintan Regency. Global climate change has become a critical environmental issue worldwide, drawing attention not only in Indonesia but also across other nations. This global phenomenon influences various aspects of life in Indonesia, particularly in small islands and coastal regions such as Bintan Island. To understand the dynamics of climate change on Mapur Island, it is essential to identify the most relevant indicators of climate change. Small islands and coastal areas like Mapur are highly vulnerable to climate change due to their dependence on local natural resources and ecologically sensitive environments. This study aims to analyze the climate changes occurring on Mapur Island. It employs a mixed-methods approach, integrating both quantitative and qualitative methodologies to examine the impact of climate change on the availability of local food in Mapur Island, Bintan Regency. A stratified proportional random sampling technique was used in the data collection process. The findings indicate that Mapur Island has experienced significant fluctuations in weather variables attributable to climate change. Notably, maximum wind speeds demonstrated sharp fluctuations, with pronounced wind surges occurring between late 2020 and early 2021, as well as from 2022 to 2023
Pemetaan Daerah Rawan Abrasi di Wilayah Pesisir Kota Tanjungpinang (Studi Kasus: Kelurahan Kampung Bugis dan Senggarang)
No full textABSTRAKPenelitian ini bertujuan untuk memetakan daerah rawan abrasi pantai diwilayah pesisir Kelurahan Kampung Bugis dan Senggarang, Kota Tanjungpinang. Pengumpulan data dilakukan sejak Desember 2020 samapi April 2021. Data diperoleh dari survei lapangan pengamatan dan interpretasi penginderaaan jauh. Analisis overlay menggunakan metode model builder dengan bantuan perangkat lunak ArcGIS digunakan dalam penentuan kelas kerawanan abrasi. Hasil dari penelitian menunjukan bahwa tingkat kerawanan abrasi di Kelurahan Kampung Bugis dan Senggarang dikategorikan dalam kelas kerawanan sedang dan rendah. Luas daerah dengan katergori kerawanan rendah mencapai 79.29 Ha, sedangkan kategori rawan sedang seluas 147.59 Ha. Kelurahan Kampung Bugis memiliki daerah rawan abrasi pantai sedang mencapai 54,92 Ha, dan rendah mencapai 47,8 Ha, sementara itu Kelurahan Senggarang memiliki daerah rawan abrasi sedang mencapai 92,67 Ha dan kerawanan rendah mencapai 31,49 Ha.Kata kunci: Pemetaan, Kerawanan abrasi pantai, SIG, Kota TanjungpinangABSTRACTThis study aims to mapping of abrasion vulnerability areas in the coastal of Kampung Bugis and Senggarang Villages, Tanjungpinang City. Data collection was carried out from December 2020 to April 2021. Data were obtained from field surveys of observations and interpretation of remote sensing. Overlay analysis using the model builder method by ArcGIS software is used to determine the abrasion susceptibility class. The results of the study indicate that the level of vulnerability to abrasion in the Villages of Kampung Bugis and Senggarang is categorized into medium and low vulnerability classes. The area in the low vulnerability category is 79.29 Ha, while the medium vulnerability category is 147.59 Ha. Kampung Bugis Village has a moderate abrasion vulnerability area of 54.92 Ha, and a low area of 47.8 Ha, meanwhile Senggarang Village has a moderate abrasion vulberability area of 92.67 Ha and a low vulnerability of 31.49 Ha.Keywords: Mapping, Abration vulnerability, GIS, Tanjungpinang cit
Analisis Distribusi Hambur Balik Sedimen Menggunakan Teknologi Hidroakustik di Perairan Teluk Bakau
Get PDFThe Teluk Bakau waters is known for its marine tourism and is often used as a traditional fishing ground. Information regarding sediment distribution in the Teluk Bakau waters is limited. Existing studies have only conducted sampling at specific locations, and there have been no reports on the spatial scattering characteristics of the sediment types on the seafloor in this area. The objective of this study is to analyze and map the acoustic backscatter values of each sediment type to obtain a spatial distribution map of sediments in the Teluk Bakau waters. The research was conducted in May 2023, using a survey method with the Simrad EK15 single-beam echosounder acoustic instrument set at a frequency of 200 kHz. Data collection in the field was done using survey lines, and during the acoustic data collection, sediment samples were collected using a sediment grab at five stations. The recorded acoustic data from the seabed were then extracted using EchoView 4.0 software to determine the values of volume backscattering strength (SV). The SV values were utilized to obtain the surface backscattering strength (SS) values, while the sediment samples were analyzed using gradistat 8.0 software. Based on the analysis conducted, Bakau Bay has SV values ranging from -34.00 dB to -38.48 dB. Based on the analysis of the SS values, Bakau Bay is dominated by coarse sand sediments in both the tracking results and sediment sampling, with backscattering values ranging from -16.00 dB to -17.49 dB. Additionally, two sediment types are evenly distributed along the tracking lines medium sand with backscattering values ranging from -17.49 dB to -18.97 dB, and fine sand with backscattering values ranging from -19.26 dB to -20.57 dB, found at a depth of 14-16 meters.Perairan Teluk Bakau merupakan daerah wisata bahari dan daerah yang sering dijadikan sebagai daerah tempat tangkapan tradisional. Informasi mengenai distribusi sedimen di perairan Teluk Bakau masih terbatas, penelitian yang telah dilakukan hanya sampling to sampling dan belum ada laporan mengenai nilai hambur balik dari jenis sedimen dasar laut di wilayah ini secara spasial, tujuan penelitian ini yaitu untuk menganalisis dan memetakan nilai hambur balik akustik dari setiap jenis sedimen sehingga didapatkan peta spasial distribusi sedimen di perairan Teluk Bakau. Penelitian ini berlangsung pada bulan Mei 2023, menggunakan metode survei dengan menggunakan instrumen akustik singlebeam echosounder simrad EK15 pada frekuensi 200 kHz. Pengumpulan data di lapangan dilakukan menggunakan lajur survei saat pengumpulan data akustik dilakukan juga pengumpulan data sampel sedimen dengan menggunakan sedimen grab sebanyak 5 stasiun sebagai ground truth. Data perekaman akustik dasar perairan yang telah diambil kemudian akan diekstrak menggunakan software echoview 4.0 untuk mengetahui nilai dari volume backscattering strength (SV), nilai SV digunakan untuk memperoleh nilai surface backscattering strength (SS) dan data sampel sedimen dianalisis dengan menggunakan gradistat 8.0. Berdasarkan analisis yang dilakukan Perairan Teluk Bakau memiliki nilai SV yang bervariasi antara -34.00 dB sampai dengan -38.48 dB. Berdasarkan analisis nilai SS Perairan Teluk Bakau didominasi oleh sedimen berjenis pasir kasar pada hasil tracking maupun pada hasil sampling sedimen dengan nilai hambur balik sebesar -16.00 dB sampai dengan -17.49 dB ditemukan juga 2 jenis sedimen yang tersebar merata pada jalur tracking yaitu sedimen pasir sedang -17.49 dB sampai dengan -18.97 dB, dan pasir halus -19.26 dB sampai dengan -20.57 dB yang berada di kedalaman 14-16 meter.
 
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