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All Journal Bulletin of Scientific Contribution : Geology MATICS : Jurnal Ilmu Komputer dan Teknologi Informasi (Journal of Computer Science and Information Technology) IJOG : Indonesian Journal on Geoscience Jurnal Sosial Ekonomi Pekerjaan Umum JATI (Jurnal Mahasiswa Teknik Informatika) JIIP (Jurnal Ilmiah Ilmu Pendidikan) Journal of Industrial Engineering & Management Research (JIEMAR) Informatics Management, Engineering and Information System Journal Electronic, Business, Management and Technology Journal Journal of Economics, Management, and Entrepreneurship Journal of Economics, Management, and Entrepreneurship

Adjat Sudrajat

Pusat Aplikasi Teknologi Isotop dan Radiasi

Author-ID : 388357

Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Industrial & Manufacturing Engineering Library & Information Science Mathematics Social Sciences Other

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Web-Based Application for Sales of Water Depot Accessories and Equipment at VQ Air Store Adawiah, Sania; Sudrajat, Adjat; Fauka, Ahfi; Parghani, Rizal
Journal of Economics, Management, and Entrepreneurship Vol. 2 No. 1 (2024): Journal of Economics, Management, and Entrepreneurship
Publisher : P3M, STIE Pasundan, Bandung, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55208/jeme.v2i1.134

An online shop website refers to a website that is equipped with an e-commerce system, allowing users to engage in transactions. In addition to the requirement of loading product offerings, the website must also possess inventory management capabilities, automated shipping cost estimates, and support for manual and automated payments using a Payment Gateway. This research aims to develop an application that facilitates the sale of accessories and supplies required for a gallon of drinking water depot at the VQ WATER store. This application will be directly linked to the website and provide comprehensive information about the VQ Water Depot Gallon Shop, including prices and purchasing instructions. The aim is to enhance user convenience when locating depot equipment. The research methodology employed in this final project is the Waterfall approach, which incorporates UML modeling. The attained outcomes manifest as an internet-based sales application accessible through a website, facilitating the exploration of depot equipment requirements. The final project entails the development of a website-based online sales application that facilitates the convenient purchase of gallon depot products. This application provides users with visual representations of accessories and equipment, their respective costs and purchasing instructions.

TEKTONIK SESAR CIMANDIRI, PROVINSI JAWA BARAT Haryanto, Iyan; Hutabarat, Johanes; Sudrajat, Adjat; Ilmi, Nisa Nurul; Sunardi, Edy
Bulletin of Scientific Contribution Vol 15, No 3 (2017): Bulletin of Scientific Contribution:GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

ABSTRACTCimandiri fault formed during stage II orogenesis is the oldest fault at the end of the middle Eocene. The Cimandiri fault is the active fault that developed a paleo high and uplifted the Ciletuh Formation within front arc basin. The stage III orogenesis at the Late Eocene indicated by regional compression in the Java that affected to reactivation fault. This fault known to be the same as the Baribis thrust fault. Finally, the compression tectonic decreased that it created the normal fault on Cimandiri thrust-fold. Therefore, we can define the Cimandiri fault into two regional fault patterns. The first pattern, the thrust fault that indicated by high bedding inclined. The second pattern, the next pattern is the normal fault that revealed by fault scarps inclination more than 50o or even vertical in some locations. Keywords: Cimandiri fault, front arc basin, Ciletuh valley, Cimandiri Valley. ABSTRACKSesar Cimandiri merupakan sesar tua yang terbentuk selama berlangsungnya orogenesa tahap II, yaitu pada waktu Akhir Eosen Tengah. Pada saat itu batuan sedimen Formasi Ciletuh berumur Eosen Tengah yang terbentuk di dalam Cekungan Depan Busur sudah terangkat ke permukaan. Sesar ini terus aktif hingga menyebabkan terbentuknya tinggian purba (paleo-hight) antara Lembah Ciletuh dan Lembah Cimandiri. Pada Akhir Tersier, tektonik kompresi kembali terjadi, menyebabkan untuk ketiga kalinya sesar Cimandiri teraktifkan kembali sebagai sesar naik. Peristiwa ini disimpulkan sebagai orogenesa ke III di Pulau Jawa. Salah satu struktur sesar regional yang terbentuk pada saat itu adalah Sesar Baribis. Setelah tektonik kompresi berkurang terjadi kesetimbangan menyebabkan terbentuknya sesar normal pada jalur lipatan anjakan Cimandiri. Oleh karena itu, Sesar Cimandiri terdiri atas dua sesar regional yang pertama sebagai sesar naik yang dicirikan oleh deformasi lipatan batuannya yang umumnya tegak, dan sebagai sesar normal yang dicirikan dengan terbentuknya gawir sesar dengan kemiringan di atas 50° bahkan di beberapa lokasi mendekati vertical. Kata Kunci: Sesar Cimandiri, Cekungan Depan Busur, Lembah Ciletuh, Lembah Cimandiri.

Anomali Imbuhan Pada Segmen Zona Transfer Sistem Fluvial Cikapundung, Jawa Barat Tanuwijaya, Zamzam A. J.; Hendarmawan, Hendarmawan; Sudrajat, Adjat; Kuntjoro, W.
Bulletin of Scientific Contribution Vol 14, No 3 (2016): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Terdapat indikasi adanya gejala kehilangan debit sungai yang bersifat alami (non-rekayasa) pada segmen zona transfer Cikapundung, yaitu pada jalur sungai antara daerah Maribaya dan Curug Dago. Karena segmen ini bersifat effluent (air tanah mengisi air sungai) maka gejala imbuhan yang terjadi pada segmen ini merupakan suatu anomali influent (air sungai mengisi air tanah). Bagian dasar sungai pada zona ini ditutupi oleh lapisan lava basal yang masif, sehingga proses imbuhan yang terjadi diduga melalui struktur rekahan batuan. Berdasarkan hasil pengujian statistik dapat disimpulkan bahwa pada zona transfer memang terjadi gejala anomali imbuhan, yaitu pada sub-segmen sungai yang bergradien rendah dan berdensitas kelurusan regional tinggi. Sub-segmen yang berdensitas kelurusan tinggi secara umum memiliki densitas rekahan batuan yang tinggi pula.Kata kunci: zona transfer, imbuhan, effluent, influent There is an indication of a natural loss of discharge phenomenon within the zone transfer of Cikapundung which are located between Maribaya area and Curung Dago. Because this segment is effluent in nature, the symptom of recharge that happened in this segment is an anomaly. The river bed in this zone is covered by massive basalt layers. Therefore the recharge process that happened is through the fractured of basalt. The results of a statistical test conclude that in the transfer zone there is a recharge anomaly phenomenon which is in the sub-segment of the river which has both a low gradient and a high regional lineament density. In general, the sub-segment that is of a high lineament density also shows high fracture density.Keywords: transfer zone, recharge, effluent, influent

Basin Classification Based on Quantitative Geological Risk Factors Irham, Syamsul; Sulaksana, Nana; Sudrajat, Adjat; Burhanidunnur, Muhammad
Bulletin of Scientific Contribution Vol 16, No 2 (2018): Bulletin of Scientific Contribution GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Abstract. Indonesia's oil and gas reserves are small and certainly will run out quickly if production is not followed by additional efforts. Exploration activities are not only one effort but also the first step of all efforts to increase reserves through the discovery of oil and gas resources. Efforts are needed to attract exploration investment interests, including access into available data, presentation of results from exploration activities and geological risk. The present research aims to study the characteristics of the geological risk in several basins based on the quantitative geological factors. In conducting the quantitative analysis, there are some factors of petroleum system that have to be recognized inter alia, source rock, reservoir, seal, trap, migration, fault and fold. For this purpose, six basins were selected representing frontier, semi mature and mature basins. Three basins were taken from the western part of Indonesia, and three others from the eastern part.

Design Of Financial Information System in Web-Based Trading Unit: Case Study of Lerta Rahayu Village Owned Business Entity, Samida Village Septiani, Windi Centia; Sudrajat, Adjat; F, Ganjar Nurul; Dianto, Aris
Electronic, Business, Management and Technology Journal Vol. 2 No. 2 (2024): Electronic, Business, Management and Technology Journal
Publisher : P3M, STIE Pasundan, Bandung, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55208/ebmtj.v2i2.169

The swift advancement of technology has heightened awareness regarding the significance of employing technology throughout many facets of life, particularly information technology. An example of this is financial information systems, which facilitate efficient data administration within firms. The Village-Owned Enterprise Kerta Rahayu in Samida Village, a nascent institution, encounters difficulties in overseeing its business divisions and financial management, which are still traditionally organized and susceptible to inaccuracies, especially within the trading unit. This study intends to construct a web-based Financial Information System utilizing the Extreme Programming methodology, PHP, MySQL, and the CodeIgniter3 framework. This system aims to enhance efficiency and mitigate the risk of errors in handling financial and inventory data, hence facilitating improved company management. The ramifications of this discovery are substantial. Implementing this Financial Information System will improve transparency and accountability in financial operations, facilitating expedited decision-making via real-time data availability. The system could also be a prototype for other village-owned firms encountering analogous issues, fostering more technology integration in local governance and business administration. This research ultimately aids in formulating sustainable practices that can improve the community's economic welfare. The financial information system comprises four primary participants: the master administrator, the village chief, the general director or chairman of BUMDes, and the BUMDes treasurer. The master administrator oversees the system to guarantee efficient functioning, while the other participants operate as report evaluators.

Karakteristik Musiman Debit Sungai Cikapundung di Kawasan Bandung Utara, Jawa Barat Tanuwijaya, Zamzam A.J.; Hendarmawan, .; Sudrajat, Adjat; Kuntjoro, W.
Bulletin of Scientific Contribution Vol 16, No 1 (2018): Bulletin of Scientific Contribution GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (788.612 KB)

Debit sungai di DAS Cikapundung KBU (Kawasan Bandung Utara) secara umum mengandung oleh komponen musiman dan komponen anomali. Dalam penelitian ini diterapkan analisis harmonik terhadap komponen musiman untuk mengekstrak siklus-siklus yang membangun komponen ini. Hasil penelitian memperlihatkan bahwa rataan normal debit dibangun oleh tiga siklus utama: siklus tahunan, tengah tahunan, dan 4 bulanan. Hasil ini diperkuat oleh analisis spektral terhadap data mentah debit yang memunculkan sinyal-sinyal signifikan pada tiga periode tersebut. Berdasarkan analisis spektrum silang dan koherensi, dapat disimpulkan bahwa determinan utama variasi debit adalah pola curah hujan di cekungan drainase Lembang (DAS Cikapundung Hulu). Puncak debit sungai rata-rata terjadi pada masa musim penghujan kedua (Monsun Australia), sedangkan puncak curah hujan rata-rata terjadi pada masa musim penghujan pertama (Monsun Asia). Kata kunci: debit, musiman, monsun, harmonik, koherensi

PERUBAHAN LINGKUNGAN PENGENDAPAN PADA KALA MIOSEN AKHIR-PLIOSEN AWAL BERDASARKAN KUMPULAN FORAMINIFERA BENTONIK KECIL PADA LINTASAN KALI JRAGUNG, KABUPATEN DEMAK, JAWA TENGAH Jurnaliah, Lia; Syafri, Ildrem; Sudrajat, Adjat; Kapid, Roebiyanto
Bulletin of Scientific Contribution Vol 15, No 1 (2017): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (724.689 KB)

ABSTRACTResearch area is located in Demak regency, Northern Central Java. Sixteen samplesediments was carried out from 140 meter section in Jragung River with 10 meter interval.Species and specimen of small benthic foraminifera was quantified in every 1 (one) gramdry sample sediment. Cluster analyses of small benthic foraminifera assemblages showedthat research area is comprises of 4 (four) biofacies. There are Biofacies A-JR (deep seawith middle bathyal zone), biofacies B-JR (shallow sea with outer shelf zone), biofacies C-JR (deep sea with middle bathyal – abyssal zone) and biofacies D-JR (deep sea withmiddle bathyal – lower bathyal zone). Eventually, during Late Miocene – Early Pliocenethere were 8 (eight) times fluctuate environmental (bathymetric zone) changes from deepsea to shallow sea.Key words: Small benthic foraminifera, biofacies, deep sea, shallow seaABSTRAKDaerah penelitian terletak di Kabupaten Demak, Jawa Tengah. Sebanyak 16 sampelsedimen diambil pada LIntasan Kali Jragung sepanjang 140 meter dengan interval 10meter. Penghitungan jumlah spesies dan jumlah individu foraminifera bentonik kecildilakukan pada setiap 1 (satu) gram sampel sedimen kering. Berdasarkan analisis klusterterhadap kumpulan foraminifera bentonik kecil, daerah penelitian terbagi menjadi 4(empat) biofasies, yaitu: Biofasies A-JR dengan lingkungan laut dalam (zona batialtengah); Biofasies B-JR dengan lingkungan laut dangkal (zona paparan luar); BiofasiesC-JR dengan lingkungan laut dalam (zona batial tengah-zona abisal) dan Biofasies D-JRdengan lingkungan laut dalam (zona batial tengah-zona batial bawah). Selama KalaMiosen Akhir-Pliosen Awal daerah penelitian mengalami 8 (delapan) kali perubahanlingkungan laut (zona batimetri) yang fluktuatif dari laut dalam menjadi laut dangkal.Kata Kunci: Foraminifera bentonik Kecil, biofasies, laut dalam, laut dangkal

ANOMALI IMBUHAN PADA HULU ZONA DEPOSISI SISTEM FLUVIAL CIKAPUNDUNG, JAWA BARAT Tanuwijaya, Zamzam A.J.; Hendarmawan, Hendarmawan; Sudrajat, Adjat; Kuntjoro, W.
Bulletin of Scientific Contribution Vol 15, No 1 (2017): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (673.772 KB)

Abstrak Terdapat adanya indikasi kehilangan debit sungai Cikapundung yang bersifat alami pada segmen Maribaya-Gandok. Segmen ini secara umum bersifat effluent (air tanah mengisi air sungai), sehingga gejala imbuhan influent (air sungai mengisi air tanah)yang terjadi pada segmen ini merupakan suatu anomali. Gejala imbuhan terbesar diduga terjadi di daerah Gandok yang merupakan area hulu zona deposisi. Penelitian ini dilakukan untuk menguji dugaan tersebut. Dilakukan survey debit sungai dan identifikasi kondisi-kondisi geologi pada sepanjang segmen yang diteliti. Adapun pengujian secara statistik terkait pengaruh variabilitas debit sungai terhadap muka air tanah dilakukan melalui analisis deret waktu. Hasil penelitian menunjukkan bahwa proses imbuhan terbesar memang terjadi di area yang telah diduga, yaitu pada segmen yang memiliki faktor gradien terendah dan berdensitas kelurusan tinggi. Proses imbuhan terjadi khususnya melalui zona kontak perlapisan antara formasi Cibeureum dan Cikapundung.Kata kunci: zona deposisi, imbuhan, efluent, influentAbstract There is an indication of the natural discharge loss of the Cikapundung river in the Maribaya-Gondok segment. Generally, the characteristic of this segment is effluent, so the influent process in this segment is an anomaly. It is suspected that the major recharge happened in the Gandok area which is an upper area of the deposition zone. This research examines this hypothesis. The process of surveying discharge and identifying the supporting geological conditions has done along the segment. While the statistical testing is used to measure the influence of discharge variability to the water table through time series analysis. The result of this study shows that the major recharge happens in the suspected area, which is in the segment that has the lowest gradient factor and high density lineaments. The process of recharge happens especially through the contact zone between the Cibeureum and the Cikapundung formation.Keywords: deposition zone, recharge, effluent, influent

ANALISA KELAYAKAN WEBSITE JAKEVO PADA REMAJA DI KELURAHAN CIPINANG MENGGUNAKAN METODE USABILITY TESTING Ispandi, Ispandi; Kusuma Atmaja, Rahdian; Ramadan, Rino; Sudrajat, Adjat
JATI (Jurnal Mahasiswa Teknik Informatika) Vol. 9 No. 4 (2025): JATI Vol. 9 No. 4
Publisher : Institut Teknologi Nasional Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jati.v9i4.14135

Jakarta Evolution (JAKEVO) merupakan sebuah platform digital berbasis website dan aplikasi yang dikembangkan oleh Pemerintah Provinsi DKI Jakarta guna memfasilitasi masyarakat dalam pengurusan perizinan. Evaluasi kebergunaan dilakukan untuk memastikan bahwa aplikasi berfungsi dengan baik, sehingga dapat mempermudah pengguna dan memberikan kepuasan dalam penggunaannya. Namun, masih terdapat beberapa kekurangan dalam aplikasi ini, Penelitian ini bertujuan untuk menganalisis tingkat kebergunaan aplikasi JAKEVO dengan menggunakan metode usability testing, yang meliputi lima variabel utama: Learnability, Efficiency, Memorability, Error, dan Satisfaction. Pengukuran dilakukan berdasarkan respon masyarakat khususnya remaja di wilayah Kelurahan Cipinang Muara yang menggunakan aplikasi tersebut. Berdasarkan hasil pengujian terhadap aspek-aspek tersebut, aplikasi JAKEVO menunjukkan performa usability yang sangat baik. Nilai rata-rata yang diperoleh dari masing-masing variabel adalah: learnability 96,25%, efficiency 95,25%, memorability 94,5%, error 93,5%, dan satisfaction 96% Hasil pengujian menunjukkan bahwa aspek-aspek kebergunaan dalam aplikasi JAKEVO telah mencapai tingkat yang baik, dengan kelima variabel berada dalam kategori sangat baik. Secara keseluruhan, aplikasi JAKEVO telah memenuhi standar kebergunaan yang optimal.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55208/jeme.v2i1.134

An online shop website refers to a website that is equipped with an e-commerce system, allowing users to engage in transactions. In addition to the requirement of loading product offerings, the website must also possess inventory management capabilities, automated shipping cost estimates, and support for manual and automated payments using a Payment Gateway.This research aims to develop an application that facilitates the sale of accessories and supplies required for a gallon of drinking water depot at the VQ WATER store. This application will be directly linked to the website and provide comprehensive information about the VQ Water Depot Gallon Shop, including prices and purchasing instructions. The aim is to enhance user convenience when locating depot equipment. The research methodology employed in this final project is the Waterfall approach, which incorporates UML modeling. The attained outcomes manifest as an internet-based sales application accessible through a website, facilitating the exploration of depot equipment requirements. The final project entails the development of a website-based online sales application that facilitates the convenient purchase of gallon depot products. This application provides users with visual representations of accessories and equipment, their respective costs and purchasing instructions.

Co-Authors Achmad Rizal Achmad, Achmadi Adawiah, Sania Aziz, Faruq Burhanidunnur, Muhammad Darmawan, Fahrizal Dianto, Aris Edy Sunardi F, Ganjar Nurul Fajri, Efrizal Nurul Faturohman, Ofa Fauka, Ahfi Ghoer, Hilman Farouq Hanafiah Hendarmawan Hendarmawan, Hendarmawan Hendarmawan, . Hill Gendoet Hartono Iim Wasliman Iis Aisah, Iis Ildrem Syafri Ispandi Ispandi, Ispandi Iyan Haryanto, Iyan Johanes Hutabarat Kapid, Roebiyanto Lia Jurnaliah Mega Fatimah Rosana N Dede Khoeriah Nana Sulaksana Nisa Nurul Ilmi Parghani, Rizal Rahdian Kusuma Atmaja Restiany, Tanty Rino Ramadan Rostini, Deti Said, Fadillah Septiani, Windi Centia Setiawan, Muhammad Ridwan Sugesti, Yeti Amal Syamsul Irham, Syamsul Tanuwijaya, Zamzam A.J. Tedjawiani, Ida Toni Kusnandar W. Kuntjoro, W. Yanuar, Yerry Zakaria, Zulfiadi Zamzam A. J. Tanuwijaya, Zamzam A. J. Zuzy Anna

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