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Emergence of Lava Dome from the Crater Lake of Kelud Volcano, East Java Hidayati, Sri; Basuki, Ahmad; Kristianto, Kristianto; Mulyana, Iyan
Indonesian Journal on Geoscience Vol 4, No 4 (2009)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1122.098 KB) | DOI: 10.17014/ijog.v4i4.83

Abstract

DOI: 10.17014/ijog.v4i4.83Kelud Volcano (+1731 m) in East Java is one of the most active and dangerous volcanoes in Indonesia. A large lake occupies the summit crater. Historical eruptions generally only lasted for a very short time, mostly no longer than a few hours. The outburst is usually accompanied by pyroclastic flows. On August 2007, the activity of the volcano was initiated by the increase of the temperature of lake water and the change of the colour from typical green to yellow. Activities of the volcano are discussed following the swarms of volcano-tectonic (VT) earthquakes on September 10th, September 26th to 29th, and October 24th to November 2nd. On September 26th to 29th, hypocentral distribution of those VT shifted from 5 km deep to just beneath the crater. The highest number of VT earthquakes occurred on November 1st attaining 50 events, then followed by a swarm of B-type events, where the number reached 1437 events in a day. The volcanic activity peaked on November 3rd when seismic records became saturated, which then was preceded by a sharp increase of lake temperature and a sudden deflation of radial tilt. It suggests that the lava extrusion forming a lava dome was taking place.
Improvement of Segmentation Performance for Feature Extraction on Whirlwind Cloud-based Satellite Image using DBSCAN Clustering Algorithm Sa'ada, Nailus; Harsono, Tri; Basuki, Ahmad
EMITTER International Journal of Engineering Technology Vol 7, No 1 (2019)
Publisher : Politeknik Elektronika Negeri Surabaya (PENS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1173.428 KB) | DOI: 10.24003/emitter.v7i1.372

Abstract

Images contain a lot of information that can be used in a variety of areas. One of the images that have much information inside is satellite image. In order to extract the information properly, the image processing step should be performed properly. The segmentation process plays an important role in image processing, especially for feature extraction. Many ways were developed to perform the segmentation image. In this study, we apply DBSCAN clustering to segment images on whirlwind cloud feature extraction problems. DBSCAN is a density-based classifier method which means it is suitable to group a density-based data. While the image used in the segmentation process is the Himawari 8 satellite image which also contains density-based data. It contains various information about clouds condition like cloud type, cloud temperature, cloud humidity, rainfall potential based on cloud temperature, etc. This study uses Himawari 8 satellite images as input where the images taken are images several hours before a wirlwind event in an area, while the cluster method used is the DBSCAN algorithm. Clustering is done to get the extraction features of a wirlwind in the form of centroid points that characterize the movement of a cloud. Segmentation performance was observed based on the number of centroid points as a result of clustering several types of clouds in an area before a wirlwind occurred. Based on segmentation testing using the DBSCAN algorithm for cloud data in an area for several hours before a wirlwind, better segmentation performance was obtained compared to the segmentation results of the Meng hee heng k-means algorithm for the same test data specifications. DBSCAN separates a type of cloud in more detail that makes it easier to record each centroid of each cluster around the scene. It is even able to cluster small groups of clouds independently so that these small groups of clouds can also be detected as features.
PERENCANAAN CAMPURAN ASPAL BETON AC-BC DENGAN FILLER ABU SEKAM PADI, PASIR ANGGANA, DAN SPLIT PALU BASUKI, AHMAD
KURVA S JURNAL MAHASISWA Vol 1, No 1 (2016)
Publisher : KURVA S JURNAL MAHASISWA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (490.752 KB)

Abstract

Dalam masa pembangunan sekarang ini merupakan kewajiban kita semua untuk berusaha meningkatkan pembangunan terutama prasarana jalan raya khususnya kota Samarinda agar lebih berkembang lagi dengan memperhatikan kualitas dan mutu jalan yang ada diatasnya agar keamanan dan kenyamanan dapat dirasakan oleh pengguna jalan tanpa mengalami hambatan. Hambatan-hambatan yang dihadapi oleh pengguna jalan di kota Samarinda biasanya berupa kerusakan atau cacat yang terjadi pada konstruksi perkerasan jalan tersebut seperti lepasnya agregat pada ikatan aspal sehingga agregat berserakan dimana-mana dan jalan menjadi berlubang.Jalan yang rusak sebelum masa pelayanannya habis juga didapatkan masihbanyak yang rusak. Hal ini ditinjau dari sebagian macam faktor antara lain beban-beban kendaraan yang berlebih, iklim tropis di Indonesia, pengawasan yang kurang baik saat penghamparan lapis perkerasan dilapangan, ataupun tidak terkontrolnya pelaksanaan job mix formula pada saat melaksanakan campuran perkerasan.Didalam penulisan ini kombinasi yang digunakan adalah hasil pembakaran gabah padi menjadi abu sekam padi sebagai penambah filler. Di Indonesia umumnya jenis lapisan perkerasan permukaan jalan digunakan adalah aspal beton. Oleh sebab itu penulis tertarik untuk melakukan penelitian tentang penggunaan variasi butiran maksimum pada campuran asphalt concrete binder course tersebut.Adapun batasan masalah dalam penelitian ini antara lain adalah Campuran aspal yang ditinjau adalah aspal AC – BC, material menggunakan Split Ex. Palu, Pasir Anggana, aspal yang digunakan yaitu aspal pertamina penetrasi 60/70, pengujian menggunakan alat marshall, yang ditinjau adalah rongga dalam campuran (VIM), rongga dalam agregat (VMA), rongga terisi aspal (VFA), stabilitas dan kelelehan (flow), tidak melakukan pengujian aspal .Maksud dari penelitian ini adalah  mengadakan pengujian langsung di laboraturium tentang perencanaan campuran beton Asphalt Concrete-Binder Course (AC-BC)dengan filler Abu Sekam Padi, Pasir Anggana, dan split Palu.Adapun tujuannya adalah untuk Mengetahui pengaruh kadar aspal terhadap campuran aspal beton AC-BC dengan filler abu sekam padi, pasir anggana, dan split palu.
Pengaruh Karakteristik Pengemudi Dan Pemanfaatan Rest Area Terhadap Kelelahan Pengemudi Studi Kasus Ruas Jalan Tol Pejagan - Solo Aprianto, Rizal; Rokhim, Abdul; Basuki, Ahmad; Sugiyarto, Sugiyarto
Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Vol. 8 No. 1 (2021): JURNAL KESELAMATAN TRANSPORTASI JALAN (INDONESIAN JOURNAL OF ROAD SAFETY)
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46447/ktj.v8i1.310

Abstract

Pengemudi memang masih menjadi faktor dominan penyebab kecelakaan lalu lintas. Merujuk data kecelakaan yang ada di jalan tol-jalan tol yang dikelola oleh Jasa Marga dan kelompok usahanya sampai Desember 2018, faktor penyebab kecelakaan paling banyak adalah faktor pengemudi sebanyak 85,13%. Kelelahan pada pengemudi juga dapat mengakibatkan menurunnya kesiagaan dan perhatian, penurunan dan hambatan persepsi serta waktu reaksi yang lambat, pengemudi akan mengantuk dan kemungkinan akan kehilangan kewaspadaan. Tujuan dari penelitian ini adalah untuk yaitu mengetahui sejauh mana karakteristik pengemudi dan pemanfaatan rest area mempengaruhi kelelahan pengemudi di jalan tol. Sehingga diketahui kebermanfaatan rest area dalam mengurangi tingkat kelelahan pengemudi di jalan tol. Penelitian ini menggunakan metode kuantitatif dengan pendekatan deskriptif yang menggunakan analisis regresi berganda dengan serangkaian uji instrumen. Dari hasil penelitian ini kelelahan yang dialami pengemudi terbagi menjadi 2 yaitu kelelahan fisik dan kelelahan kegiatan. Variabel usia pengemudi, pengemudi yang memilih beristirahat, pengemudi yang tidak memanfaatkan fasilitas istirahat di rest area, pengalaman mengemudi serta jangka waktu mengemudi dalam satu kali perjalanan memberikan kontribusi terhadap kelelahan pengemudi di jalan tol. Usia pengemudi berpengaruh terhadap semua jenis kelelahan yang dialami oleh pengemudi di jalan tol Pejagan-Solo.
Efektivitas Pemanfaatan QGIS Dalam Pembuatan Peta Inventarisasi Perlengkapan Jalan Wijayanthi, Kanthi; Basuki, Ahmad; Tohom, Frans
Jurnal Keselamatan Transportasi Jalan (Indonesian Journal of Road Safety) Vol. 8 No. 2 (2021): JURNAL KESELAMATAN TRANSPORTASI JALAN (INDONESIAN JOURNAL OF ROAD SAFETY)
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46447/ktj.v8i2.315

Abstract

In the field of road traffic and transportation, road inventory activities are needed to monitor or monitor the condition of road equipment. The proper data collection will facilitate evaluation and supervision by managers or supervisors of traffic and road transportation. The data collection of road equipment inventory data can be compiled manually or electronically, which is integrated with the road equipment information system. One of the electronic data collections is by utilizing QGIS, which is one part of the Geographic Information System (GIS). This study aims to measure the effectiveness of using QGIS in making road equipment inventory maps using survey data and questionnaires to determine the difference between manual inventory data collection and WebGIS-based inventory data collection. Data analysis used SPSS calculation to test data validity, reliability, normality, Wilcoxon test and N-Gain Score test. From this data, it is found that the use of QGIS in road equipment inventory mapping has an average effectiveness of 60.26%, with the interpretation criteria being quite effective.
Sengketa Tanureal: Refleksi Pertentangan Sentralisme Hak Menguasai Negara dalam UUPA dengan Kepentingan Masyarakat Adat Muhammad Syamsudin; Ahmad Basuki
Jurnal Hukum IUS QUIA IUSTUM Vol. 10 No. 22: Januari 2003
Publisher : Fakultas Hukum Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/iustum.vol10.iss22.art6

Abstract

The UUPA is a transitional act product which is made to change the characteristic of colonial Law of agrarian field into the agrarian law which is in accordance with the form and idea of Indonesia Republic Unitary State. In practice, during the new order regime,the authorities abused the State Authorization Right and gave the investors the privileges of controlling the agrarian sources. As a consequence, the existency and community role of the custom were getting marginilized and felt ata disadvantage. This reality frequenthy triggered to cause the tenureal disputes between the investors and the custom community which, in general, enabled to threat the integrity of national territory/ unity. In the effort of preventing the recurrence, the UUPA needs reforming the characteristic of agrarian law which not only accomodating but also warranting the interests ofcustom community. Pluralism of agrarian law should reflect more the spirit of Unity in diversity.
PENGAWASAN TERHADAP PENYELENGGARAAN KEKUASAAN KEHAKIMAN SEBAGAI UPAYA DALAM MEWUJUDKAN AKUNTABILITAS PERADILAN PIDANA Ahmad Basuki
Perspektif Vol 18, No 1 (2013): Edisi Januari
Publisher : Institute for Research and Community Services (LPPM) of Wijaya Kusuma Surabaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (494.467 KB) | DOI: 10.30742/perspektif.v18i1.114

Abstract

Kemandirian Kekuasaan Kehakiman merupakan prasyarat yang harus dipenuhi dalam rangka bekerjanya negara hukum (materiil) atau demokratis. Negara hukum yang konsolidasi demokrasinya masih lemah menyebabkan prinsip kemandirian kekuasaan kehakiman tersebut sering disalahgunakan sehingga memicu terjadinya “mafia peradilan”. Seiring dengan momentum reformasi, maka dengan mempertimbangkan pengalaman dan praktek peradilan di masa lalu, upaya pengembangan dan reformasi lembaga peradilan harus diarahkan pada administrasi peradilan yang transparan, ketat dalam pengawasan serta tegas dalam penindakan, sehingga akan mampu melahirkan lembaga peradilan yang akuntabel dan bermartabat. Kemandirian Kekuasaan Kehakiman harus diimbangi dengan prinsip akuntabilitas sebagai manifestasi sebagai negara yang demokratis.Judicial independence is a prerequisite that must be met in the context of the operation of democratic state. State laws which the consolidated democracies are weak could cause the independence of judicial power principle became so often misused and thus causing “judicial mafia”. Along with the reformation momentum, then by considering the experience and practice of justice in the past, the development and reformation of the judiciary should be directed to the administration of justice in a transparent, rigorous oversight and resolute in action, so it will be able to bring the judiciary accountable and dignified. Judicial independence must be balanced with the accountability principle as a manifestation of a democratic state.
KEBIJAKAN RETROAKTIF DALAM PENEGAKAN HUKUM TERHADAP PELANGGARAN HAK ASASI MANUSIA YANG BERAT Ahmad Basuki
Perspektif Vol 12, No 2 (2007): Edisi Mei
Publisher : Institute for Research and Community Services (LPPM) of Wijaya Kusuma Surabaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30742/perspektif.v12i2.383

Abstract

The article entitling “The Retroactive Policy in the straightening of law to the gross violation of Human Right in Indonesia" at to know according between retroactive Policy in the straightening of law to the gross violation of human right with The Indonesia rule of law character. According to the result of referential, we can make solution, first, that legality principle have to domicile very sturdy in regulation of Indonesia laws, event in the constitution and also law story level. Second, that retroactive policy in the Undang-undang No. 28 Tahun 2000 if it is observed in rechmatigheid aspect, it don’t reflected mirroring of execution of the rule of law. But if we observe it in the doelmatigheid aspect, we will find out similar with justice which is dominated by human principles in justice and civilized of Pancasila.
PENDEKATAN SISTEM ETIK DALAM PENGAMBILAN KEPUTUSAN MENGENAI TINDAKAN ABORSI Ahmad Basuki
Perspektif Vol 9, No 1 (2004): Edisi Januari
Publisher : Institute for Research and Community Services (LPPM) of Wijaya Kusuma Surabaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30742/perspektif.v9i1.263

Abstract

A process is applied to compile complex infirmation, values and interests that compete to one another to justify a particular ethical decision on abortion measures. In this case there are three standpoints namely conservative, liberal and democrat. Approach of ethical system in decision making on abortion measures that a fetus is an initial indication of a person’s life. Therefore, its growth and development must be respected both in view of its biological and social facets.
BEBERAPA ASPEK RESERVASI DALAM PERJANJIAN INTERNASIONAL Ahmad Basuki
Perspektif Vol 6, No 4 (2001): Edisi Oktober
Publisher : Institute for Research and Community Services (LPPM) of Wijaya Kusuma Surabaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30742/perspektif.v6i4.536

Abstract

Setiap negara mempunyai hak untuk mengajukan reservasi ke lembaga internasional, penolakan atau penerimaan mempunyai akibat hukum dan konsekuensi tertentu, hal demikian disesuaikan dengan maksud dan tujuan dari suatu perjanjian internasional.