bluuebunny/crossref_metadata_2025 huggingface dataset:
Analisis Struktur Lapisan Tanah dengan Metode Geolistrik Resistivitas Schlumberger Vertikal di Toladan Kabupaten Jayapura
Authors: Y.Y. Mantiri Steven , Napitupulu Daniel , Sutarman Tatang
Published: September 2023

Kajian analisis struktur tanah untuk keperluan penyelidikan endapan airtanah dengan metode geolistrik resistivitas Schlumberger sounding dilakukan di Toladan, Desa Sentani Kota, Kecamatan Sentani, Kabupaten Jayapura. Penelitian ini bertujuan untuk memperkirakan letak dan kedalaman lapisan tanah yang mengandung airtanah (akuifer). Metode geolistrik resistivitas paling cocok untuk eksplorasi air tanah, mineral logam dan lapisan batuan keras. Penelitian dengan metode geolistrik ini menggunakan konfigurasi elektroda Schlumberger. Model investigasi dilakukan secara vertikal – 1 dimensi (sounding). Metode penelitian yang digunakan adalah metode survei lapangan dan analisis geofisika lanjutan. Penelitian dilakukan pada titik dengan koordinat 2°33'10.70"LS 140°31'51.00"BT. Hasil penelitian menunjukkan bahwa lapisan akuifer yang terdeteksi adalah lapisan akuifer dalam. Litologi geologi lokasi penelitian didominasi oleh batuan ultramafik padat dan keras. Selain itu, pasir kasar dan halus mendominasi di daerah penelitian. Struktur tanah keras dan lapisan deposit air tanah ditemukan di lokasi penelitian. Lapisan yang mengandung airtanah ditemukan pada kedalaman 67,60 m dengan resistivitas 45,50 m. Jenis akuifer yang terdeteksi adalah akuifer jernih karena berada di lingkungan batuan keras ultrabasa dan pasir berasosiasi dengan tanah, kerikil dan kerikil.
Model dan Visualisasi Struktur Molekular Organik Ikatan Sederhana p-p dan s-p Hibrida
Authors: Ngaderman Hubertus , Srivajawaty Sinaga Ego , Napitupulu Daniel
Published: September 2023

Tujuan utama dari riset ini adalah memodelkan struktur molekul organik hibrida . Untuk memodelkan dan memvisualisasikan struktur rumit tersebut, pertama-tama dihadirkan konsep mendasar didalam mekanika kuantum yang dinyatakan secara eksplisit dengan fungsi gelombang . Dari fungsi gelombang  maka struktur molekul paling sederhana yaitu  kita pahami. Visualisasi molekul  telah dibuat dan selanjutnya untuk ikatan kovalen lainnya yaitu ikatan  (, dan ), ikatan  (, dan ) dan ikatan hibrida  (, dan ). Konsep molekul  adalah konsep paling sederhana dan dasar didalam memahami struktur paling rumit didalam ikatan molekular organik. Disini struktur rumit tersebut adalah ikatan hibrida . Salah satu contoh ikatan tersebut adalah benzena . Sesudah memahami kajian diatas maka fenomena mendasar yaitu konduktivitas listrik didalam material organik diharapkan dapat dipahami.
Analisis Mikrometer dengan Metode HVSR (Horizontal to Vertical Spectral Ratio) di Distrik Jayapura Utara, Kota Jayapura
Authors: Kayame Elisabeth , Y.Y. Mantiri Steven , Marsell Romi
Published: September 2023

Tujuan penelitian ini yaitu untuk menentukan nilai amplifikasi getaran tanah dalam kaitannya dengan frekuensi dominan tanah di Distrik Jayapura Utara, Kota Jayapura dan Menentukan nilai periode dominan tanah di Distrik Jayapura Utara, Kota Jayapura. Metode penelitian yang digunakan adalah Metode Survei Lapangan, dimana dilakukan pengukuran langsung di lapangan dengan mengunakan alat perekaman mikrotremor. Nilai frekuensi dominan, periode dominan, dan amplifikasi, akan ditentukan berdasarkan analisis rekaman sinyal mikrotremor dengan metode HVSR. Nilai frekuensi dominan, periode dominan, dan amplifikasi dengan metode HVSR akan dihitung dengan bantuan software Geopsy versi 2.0.9. Nilai amplifikasi getaran tanah maksimum 17,976800  dengan nilai frekuensi dominan tanah 0,573656 Hz berlokasi di titik JU02 (Halaman Masjid AURI Angkasapura) dan nilai frekuensi dominan amplifikasi getaran tanah minimum 1,410200 dengan frekuensi dominan 0,681167 Hz berlokasi di titik pengukuran JU17. Lokasi disekitar titik JU02 (Halaman Masjid AURI Angkasapura) lebih rawan terhadap gempabumi relatif terhadap yang lain dan lokasi di sekitar titik pengukuran JU17 (Halaman Kantor Pos Jayapura) lebih aman terhadap gempabumi relatif dibandingkan dengan lokasi yang lain. Nilai Periode dominan tanah maksimum 1,847194 s  berlokasi di titik pengukuran JU12 (Bayangkara) dan periode dominan tanah Minimum 0,090822 s berlokasi disekitar titik JU02 (Bayangkara) lebih rawan terhadap gempabumi  relatif terhadap yang lain dan lokasi disekitar titik pengukuran JU09 (Angkasa Lembah Sunyi) lebih aman terhadap gempabumi relatif dibandingkan dengan lokasi yang lain.
Model Karakteristik Kontak Logam Semikonduktor, Konsentrasi Muatan Dan Medan Listrik Di dalam Junction Logam Semikonduktor
Authors: Ngaderman Hubertus , Sinaga Ego Srivajawaty
Published: September 2023

Telah dilakukan pemodelan karakteristik untuk logam dan semikonduktor pada saat mereka dihubungkan secara kontak intim. Muatan dan distribusi medan juga ditampilkan di dalam pemodelan ini, dimana grafik antara luas wilayah muatan dan konsentrasi muatan dan juga medan listrik di dalam junktion telah divisualisasi.  Tujuan penelitian ini adalah visualisasi untuk kontak antara logam dan semikonduktor, dimana kontak tersebut adalah kontak mikroskopis yang melibatkan pita-pita energi antara dua material. Untuk menampilkan visualisasi tersebut maka beberapa parameter utama akan terlibat yaitu: pita konduksi, pita valensi, pita gap, level-level Fermi, level vakum, fungsi kerja logam, fungsi kerja semikonduktor, afinitas elektron semikonduktor, afinitas elektron logam, ketinggian penghalang dan potensial built-in. Visualisasi tersebut adalah meliputi keadaan dimana kedua material tersebut terisolasi maupun dikontakkan (tak terisolasi).
Analisis Struktur Lapisan Bawah Permukaan Untuk Pembangunan Dermaga Menggunakan Metode Geolistrik Di Kampung Abar, Distrik Ebungfauw, Kabupaten Jayapura
Authors: Nengkey Lily H , Bungkang Yusuf , Kareth Zakaria V.
Published: September 2023

Kampung Abar Distrik Ebungfauw terdapat sebuah dermaga yang dibuat oleh masyarakat setempat sebagai penghubung antar kampung lainnya. namun dermaga tersebut sudah sangat tua hingga harus dibuat dermaga yang baru, oleh sebab itu perlu dilakukannya survey struktur bawah permukaan. Penelitian ini bertujuan untuk menginformasikan kepada masyarakat setempat keadaan struktur bawah permukaan tanah agar bisa dilakukannya pengeboran untuk melakukan penanaman tiang pancang baru buat dermaga. Metode penelitian yang akan digunakan adalah metode geolistrik tahanan jenis konfigurasi schlumberger untuk survey bawah permukaan secara vertikal dan akan dikorelasi dengan hasil dari data metode boring. Penelitian akan dilakukan di Kampung Abar Distrik Ebungfauw, dengan pengambilan data sebanyak 2 (dua) titik survey. Instrumen yang digunakan adalah ResistivityMeter yang dilengkapi dengan dua pasang elektroda arus dan potensial. Hasil penggolahan data akan berupa penampang struktur lapisan secara vertikal yang menunjukan keadaan sturktur bawah permukaan. Pada penelitian ini didapatkan bahwa struktur bawah permukaan Dermaga Kampung Abar didominasi oleh lapisan yang terdiri dari material lempung bercampur pasir padat dengan nilai resistivitas 1917 hingga 38494 m. Selain itu, terdapat lapisan batuan keras berupa kerikil bercampur lumpur dengan nilai resistivitas 6,1 sampai dengan 1,248 m. direkomendasikan untuk kedalaman pondasi pada titik 6 sampai 15 meter, dan hasil data metode pemboran dibor sedalam 10 meter.
Pore Pressure Estimation Using Bowers Methods in Shale Gas Reservoir Jambi Sub-Basin
Authors: Bungasulu Benny A.
Published: September 2023

Pore pressure prediction has important implications in determining the success of a drilling activity. Information of subsurface pore pressure prediction in hydrocarbon exploration and production is very important. For geologist this information can be used to determine of hydrocarbon generation and maturation within a basin, while for petroleum engineer pore pressure prediction is very important to maintain the production rate and for drilling engineer this information is useful for mud weigh and casing designs prior drilling activities to prevent blow out. This study is conducted in the well A and B, Field "X", Jambi Sub-Basin. Wells A and B have problems when drilling operations are carried out, such as blow out and pipe sticking which causes high non-productive time (NPT). So, optimum pore pressure prediction analysis must be carried out to avoid downhole problems in the implementation of further development well drilling. First, this study identifies the mechanism of overpressure formation, then predicts pore pressure using the Bowers method and subsequently performs modeling of subsurface 3D pore pressure. The results of the analysis showed that overpressure occurred in the Gumai and Talang Akar Formations, overpressure mechanism in the formation was caused by compaction, fluid expansion (kerogen maturation), and based on analysis of 3D pore pressure modeling many overpressure zones were found in the Gumai Formation, Jambi Sub-Basin
Delineasi Struktur Patahan di Wilayah Kabupaten Nabire Papua Menggunakan Analisis Horisontal Derivatif Orde Pertama (FHD) dan Orde Kedua (SHD) Berdasarkan Data Anomali Gravitasi
Authors: Sudrajad Bangkit
Published: September 2023

Wilayah Kabupaten Nabire di bagian Utara leher Pulau Papua memiliki kondisi geologi kompleks dan seismisitas tinggi akibat interaksi tumbukkan lempeng Benua Australia dan Samudra Pasifik. Penelitian metode gravitasi ini bertujuan untuk mendelineasi struktur patahan akibat hadirnya mekanisme ekstensional di daerah tersebut melalui analisis horisontal derivatif berdasarkan data anomali gravitasi GGMplus. Analisis horisontal derivatif yang digunakan untuk mendelineasi batas kontak densitas struktur dilakukan dalam orde pertama (first horizontal derivative) dan orde kedua (second horizontal derivative) yang kemudian dikorelasi dengan data mekanisme fokus (focal mechanism). Hasil delineasi menunjukkan bahwa dari analisis horisontal derivatif pada 7 penampang yang memotong struktur patahan yang ada di wilayah penelitian diperoleh 31 batas kontak densitas pada patahan-patahan prediksi dan batas litologi batuan. Kontak densitas ini selain sesuai dengan data struktur dan batas litologi formasi batuan juga bersesuaian dengan sebaran seismisitas gempabumi yang juga mengkonfirmasi keberadaan struktur patahan di wilayah tersebut.
Analisis Tingkat Kebisingan Menggunakan Sound Level Meter Berbasis Mikrokontroler
Authors: Hamzah Hardi , Agriawan Muhammad Nurkhalis , Kadir Muh. Ridwan
Published: September 2023

Penelitian ini bertujuan untuk menganalisis tingkat kebisingan di Kabupaten Polewali Mandar. Alat yang digunakan untuk mengukur kebisingan yaitu Sound Level Meter (SLM) berbasis mikrokontroler. Jenis mikrokontroler yang digunakan adalah arduino uno. Pengambilan data dilakukan pada kondisi pada saat ramainya penduduk sedang beraktivitas. Pengukuran dilakukan pada siang dengan kondisi cuaca cerah 330C, kelajuan angin STG 5 km/jam, kelembapan 72% dan sesuai dengan tingkat keramaian jalan raya. Hal ini dimaksudkan agar proses pengukuran dapat memperoleh hasil yang akurat. Pengukuran dilakukan di tempat terbuka untuk menghindari pantulan suara. Ketinggian sound level meter sekitar 1,2 meter dari atas permukaan tanah. Jarak pengamat ke sound level meter diatur sekitar 0,5 meter untuk menghindari efek pemantulan bunyi. Penelitian dilakukan di sepuluh titik pada kecamatan yang ada di Kabupaten Polewali Mandar. Diperoleh hasil bahwa  sembilan titik kecamatan memiliki rata-rata tingkat kebisingan di bawah nilai ambang batas kebisingan 85 dB dan satu titik yaitu Kecamatan Wonomulyo memiliki rata-rata tingkat kebisingan 86 dB melampaui nilai ambang batas kebisingan.
Profil Peningkatan Literasi Sains Peserta Didik pada Pembelajaran Fisika di Sekolah Menengah Pertama
Authors: Mauladhani Anisa Eka , Safitri Indah Ayu , Fakhira Arini Azrin , Rohman M. Fatur , Mahardika I Ketut , Baktiarso Singgih
Published: September 2023

Penelitian ini bertujuan untuk membangun kesadaran literasi sains pada pembelajaran fisika di SMP tahun 2022. Berdasarkan data PISA, Indonesia berada diperingkat rendah pada bidang sains, membaca, dan metematika. Metodologi penelitian yang digunakan adalah kajian Pustaka. Keberhasilan pembelajaran literasi sains ditunjukkan apabila peserta didik memahami apa yang dipelajari serta dapat mengaplikasikannya dalam kehidupan sehari-hari. Literasi sains dinilai cocok dan penting dalam mengembangakan pembelajaran fisika tahun 2022.
Peranan Perkembangan Sains dalam Perkembangan Teknologi Transportasi Pesawat Sebagai Sumber Belajar Fisika
Authors: Sari Kamalia Zahra Ratna , Maharika Mayang , Ardana Raras Pratita
Published: September 2023

Tujuan dalam penulisan penelitian ini adalah untuk mendeskripsikan secara mendalam pengaruh-pengaruh sains pada perkembanga teknologi sebagai pembelajaran fisika. Metode dalam penelitian ini adalah deskriptif-analitis yaitu metode yang mendeskripsikan suatu objek yang diteliti melalui data yang telah dikumpulkan apa adanya tanpa melakukan analisis dan membuat kesimpulan yang berlaku untuk umum. Sayap merupakan komponen penting yang ada pada badan pesawat yang berfungsi untuk menghasilkan kecepatan yang mampu mengimbangi gesekan dengan udara, sehingga bisa menghasilkan gaya angkat dan mampu mengatasi berat badan pesawat. Sayap pesawat terbang memiliki bentuk lebar dan panjang yang berfungsi agar aliran udara dapat bergerak lebih cepat di sayap bagian atas dari pada bagian bawah pesawat. Sisi atas pesawat lebih melengkung menyebabkan kecepatan udara dibagian atas lebih cepat dari pada bagian bawah, sehingga tekanan diatas pesawat lebih rendah daripada di bawah pesawat. Perbedaan tekanan tersebut menghasilkan gaya angkat pesawat terbang. Pesawat dapat terangkat keatas apabila berat dari pesawat lebih ringan daripada gaya angkat pesawat. Pesawat dapat terbang bergantung pada kecepatan, berat, dan lebar pesawat itu sendiri.
Peranan Laboratorium Fisika dalam Menunjang Pembelajaran Fisika di SMA
Authors: Puspitasari Nara Ratih Nur , Shabitna Flapreliani Syafa , Anggraeni Diva Kanaya , Wulandari Febby Putri , Baktiarso Singgih , Mahardika I Ketut
Published: September 2023

Anggapan sebagai mata pelajaran yang penting, fisika diajarkan sebagai mata pelajaran tersendiri dengan berbagai pertimbangan. Kajian teori dan pengamatan di laboratorium fisika merupakan dua komponen esensial pendidikan fisika yang saling bergantung dan tidak dapat dipisahkan. Keduanya tidak dapat dipisahkan, saling melengkapi, dan saling bergantung. Fisika dipandang sebagai proses dan produk, sehingga belajar fisika dengan sukses membutuhkan fokus pada pembelajaran yang efektif dan efisien. Kelas fisika memberi siswa kesempatan untuk memperluas dan menyempurnakan pemikiran mereka. Kemampuan kognitif ini membantu dalam mencapai tingkat pendidikan yang lebih tinggi dan membantu dalam penyelesaian masalah sehari-hari. Laboratorium sangat penting bagi keberhasilan kegiatan pendidikan di sekolah. Laboratorium adalah tempat di mana eksperimen dan investigasi dalam fisika, kimia, biologi, dan disiplin ilmu lainnya dilakukan. Siswa dapat mendemonstrasikan dan membuktikan fenomena alam dan konsep fisika yang dibahas melalui kegiatan praktikum langsung.
Analisis Deskriptif Perbandingan Data Sekunder Gravitasi GGMplus Terhadap Data Gravitasi Lapangan Panas Bumi Gunung Lawu dan Data Gravitasi Stasiun Referensi (gravity base station) di Pulau Papua
Authors: Sudrajad Bangkit
Published: September 2023

Penelitian dengan metode gravitasi dapat dilakukan menggunakan data primer maupun data sekunder. Data sekunder gravitasi berguna untuk survei pendahuluan pada target geologi yang besar atau sulit dijangkau di lapangan. Data sekunder gravitasi GGMplus merupakan data model gravitasi global yang memiliki resolusi sangat tinggi. Namun sebelum memanfaatkan data sekunder gravitasi GGMplus untuk tujuan penelitian, perlu diketahui seberapa akurat data tersebut dibandingkan data pengukuran langsung di lapangan. Pada kajian ini penulis melakukan validasi melalui analisis deskriptif perbandingan data gravitasi GGMplus terhadap data gravitasi lapangan panas bumi Gunung Lawu dan data gravitasi stasiun referensi di Pulau Papua. Dari hasil analisis yang dilakukan diperoleh bahwa data gravitasi GGMplus mampu memberikan nilai anomali gravitasi dengan akurasi yang baik pada titik pengukuran yang berada pada lokasi dengan kontur topografi yang tidak kasar dan pada kondisi litologi yang tidak terlalu kompleks. Sedangkan pada lokasi titik pengukuran dengan kondisi sebaliknya, data gravitasi GGMplus memiliki keterbatasan untuk menangkap anomali yang dangkal atau anomali dari struktur yang terlalu lokal.
Analisis Struktur Lapisan Tanah Untuk Keperluan Pencarian Deposit Air Tanah Dengan Metode Geolistrik Resistivitas Schlumberger Vertikal Di Kampung Padang Pasir, Kelurahan Sentani Kota, Distrik Sentani, Kabupaten Jayapura
Authors: Mantiri Steven Y.Y. , Napitupulu Daniel
Published: September 2023

Penelitian tentang analisis struktur lapisan tanah untuk keperluan pencarian deposit air tanah dengan metode geolistrik resistivitas dilakukan di Kampung Padang Pasir, Kelurahan Sentani Kota, Distrik Sentani, Kabupaten Jayapura. Penelitian ini bertujuan untuk menganalisis lapisan tanah yang mengandung air tanah dan menduga kedalaman lapisan air tanah (lapisan akuifer). Penelitian dengan metode geolistrik ini menggunakan konfigurasi elektroda Schlumberger secara vertikal – 1 dimensi (sounding). Metode yang digunakan adalah metode survei lapangan dan analisis geofisika lanjutan. Metode survei lapangan yaitu pengukuran menggunakan alat geolistrik Resistivity Meter merek IRES T300f. Metode analisis geofisika lanjutan yaitu pengolahan data pengukuran dengan bantuan perangkat lunak geolistrik sounding yaitu IP2Win version 3.0.1 versi bebas. Hasil penelitian menunjukkan bahwa titik-titik survei memiliki kemiripan struktur lapisan dan kesamaan litologi tanah yaitu didominasi oleh batuan ultramafik serta pasiran kasar dan halus. Lapisan yang mengandung air tanah (akuifer) ditemukan pada semua titik penelitian yang terdiri atas lapisan akuifer dangkal dan akuifer dalam, tidak terdapat akuifer menengah. Lapisan akuifer dangkal pada titik 1 dengan resistivitas 83,10 Ωm pada kedalaman 17,80 m dengan ketebalan 17,40 m dan pada titik 2 dengan resistivitas 31,50 Ωm pada kedalaman 5,27 m dengan ketebalan 5,05 m. Lapisan akuifer dalam pada titik 1 dengan resistivitas 7,70 Ωm pada kedalaman 61,70 m dan pada titik 2 dengan resistivitas 28,00 Ωm pada kedalaman 5,27 m dengan ketebalan 5,05 m. Jenis akuifer yang terdeteksi adalah akuifer yang jernih karena berada di lingkungan batuan keras ultramafik dan pasiran terasosiasi dengan tanah, kerikil dan kerakal.
Peningkatan Keterampilan Berpikir Tingkat Tinggi (Higher Order Thinking Skills) Peserta Didik Menggunakan Modul Pembelajaran Fisika Yang Berbasis Pendekatan Saintifik Materi Suhu Dan Perubahannya
Authors: Nurhidayah Midah , Listianingrum Febri , Sari Wahyu Kumala
Published: September 2023

The purpose of this study is to find out the increase in the HOTS of students using learning modules based on a scientific approach to the material of temperature and its changes. The sample taken in this study was 34 students of grade 7 MTs. Jayapura City State. This study uses a classroom action research method that uses 3 cycles to determine the increase in HOTS. The results showed that in learning using the module, students' HOTS increased with the n-Gain value of the cycle (1) of 0.57, (2) of 0.58, and (3) of 0.64 with an average n-Gain value. of 0.60 medium categories. Based on this, it can be concluded that students have sufficient higher-order thinking skills (HOTS).
Pengukuran Nilai Kosntanta Dielektrik Dan Kandungan Padatan Terlarut Air Danau Sentani
Authors: Bungasalu Benny A. , Papilaya Eva , Bunga Martina , Dahlan Khaeriah , Hamzah Hardi
Published: September 2023

Telah dilakukan penelitian analisis kosntanta dilektik dan pengukuran  total padatan atau partikel terlarut dalam  air danau Sentani. Penelitian ini dilakukan untuk mengetahui besar nilai dari konstanta dielektrik dan nilai padatan yang terlarut pada air danau sentani. Penelitian ini mengambil sample di sekitran kampung yoboi kabupaten Jayapura. Dimana dari penelitian ini didapatkan  rata rata nilai padatan 112.8 ppm. Untuk penentuan konstanta dielektrik tiap konsentrasi larutan dilakukan pengukuran kapasitansi dengan variasi jarak antar plat. Sebelum pengukuran konstanta dielektrik larutan, dilakukan kalibrasi dahulu terhadap alat dengan mengukur konstanta dilektrik udara dan didapatkan nilai sebesar 1,05. Nilai ini berbeda dengan konstanta dielektrik udara referensi sebesar 1,00054 sehingga didapatkan eror sebesar 4,9 %. Nilai eror ini masih dalam tahap wajar sehingga alat dapat digunakan untuk mengukur konstanta dielektrik larutan. Pengukuran kapasitansi dilakukan dengan range frekuensi 100 – 2000 Hz dengan interval 50 Hz. Hasil penelitian menunjukkan bahwa metode dielektrik dapat digunakan untuk mengukur nilai kapasitansi dan konstanta dielektrik pada cabe air danau sentani. Nilai kapasitansi dan konstanta dielektrik semakin menurun dengan bertambahnya frekuensi.
Perbandingan Nilai Konstanta Dielektrik Dari Sampel Air Kali Acai Dengan Air Baku Minum di Kota Jayapura
Authors: Wiryani Kristin , Rahman Rahman , Hamzah Hardi , Bunga Martina , Napitupulu Daniel
Published: September 2023

Perbandingan nilai konstanta dielektrik dari sampel air Kali Acai Abepura dengan air baku minum di Kota Jayapura sudah dilakukan pengukuran di Laboratorium Fisika Lanjut Universitas Cenderawasih. Tujuan dari penelitian ini adalah melihat nilai konstanta dielektrik air, dari air limbah pada Kali Acai Abepura, membandingkan dengan air kemasan Kota Jayapura. Konstruksi sampah adalah sisa kegiatan sehari-hari manusia atau proses alam yang berbentuk padat, sedangkan limbah cair sebagai akibat masuknya air eksternal ke dalam timbunan limbah atau sampah kemudian membilas dan melarutkan materi yang ada di dalam timbunan tersebut, sehingga memiliki variasi kandungan polutan organik dan nonorganik. Pengukuran nilai konstanta dieletrik air limbah dilakukan dengan menggunakan metode pelat sejajar yang diletakkan pada wadah yang berisi air tanah. Hasil dari penelitian adalah melihat pengukuran dan pembandingan nilai koefisian dan kapasitansi. Frekuensi terhadap nilai konstanta dielektrik air sampel, yaitu semakin besar frekeunsi, maka nilai koefisien dan kapasitansi semakin kecil.
Analisis Perbandingan Nilai Konstanta Dielektrik Dari Minyak Goreng Kemasan, Minyak Goreng Curah dan Minyak Jelantah
Authors: Usman Yulfirly , Rahman Rahman , Papilaya Eva
Published: September 2023

Metode dielektrik yaitu pengukuran yang dilakukan pada dua plat kapasitor keping sejajar dan diantara kedua pelat tersebut diberi bahan dielektrik dengan frekuensi tetap LCR meter mulai dari 100 Hz sampai 10.000Hz. Tujuan dari penelitian ini adalah Menganalisis pengaruh perbandingan antara minyak goreng kemasan, minyak goreng curah dan minyak jelantah berdasarkan konstanta dielektrik dengan menggunakan metode plat sejajar. Hasil analisis menunjukan nilai maksimum dari konstanta dieletrik untuk ketiga sampel dicapai pada frekuensi 100 Hz, yaitu minyak goreng kemasan sebesar 2,856, minyak goreng curah 2,806 sedang minyak goreng jelantah sebesar 4,669, sedangkan nilai konstanta dielektrik terkecil dari sampel pengukuran didapat pada frekuensi sebesar 10.000 Hz, yaitu minyak goreng kemasan bernilai 1,215, minyak goreng curah bernilai 1,265 sedangkan minyak goreng jelantah sebesar 3,020. Dari hasil pengukuran dapat disimpulkan bahwa sampel minyak goreng mengalami perubahan peningkatan nilai kapasitansi dan penentuan konstanta dielektrik setelah penambahan frekuensi pada masing-masing sampel minyak goreng.
Penentuan Jalur Evakuasi Tsunami Dan Tempat Evakuasi Sementara (Tes) Di Kawasan Pesisir Distrik Muara Tami Kota Jayapura
Authors: Handayani Ragil Tri , Kareth Zakaria Victor , Baru Netty Yufita
Published: September 2023

Tsunami merupakan bencana yang tidak dapat diprediksi waktu kemunculannya, namun jika terjadi dapat menimbulkan kerusakan dan dampak yang besar. Oleh sebab itu diperlukan TES untuk digunakan sebagai tempat evakuasi sementara apabila terjadi bencana seperti tsunami. Penentuan jalur dan tempat evakuasi sementara dilakukan dengan menggunakan metode Kuantitafif dengan wawancara dan kuisioner terhadap responden untuk menganalisis data agar terukur. Serta menggunakan metode Kualitatif yaitu berupa data sekuder pengolahan gempabumi dan data history tsunami di Papua untuk menentukan peta ancaman tsunami di wilayah penelitian Hasil dari penelitian adalah tempat yang bisa dijadikan tempat evakuasi memiliki jarak serta waktu yang kurang efisien oleh karena itu diperlukan selter vertikal di area dekat pantai. Dan Semakin tinggi gelombang tsunaminya maka selter yang diperlukan juga semakin tinggi.
Analisis Struktur Lapisan Tanah Menggunakan Metode Geolistrik Resistivitas Konfigurasi Schlumberger Vertikal di Kompleks Perumahan Dosen Uncen Kali Acai, Kulurahan VIM, Distrik Abepura, Kota Jayapura
Authors: Mantiri Steven Yohanes Yulianus , Alwendzani Vinexa , Napitupulu Daniel , Sutarman Tatang
Published: September 2023

Research on the analysis of the structure of the soil layer using the Vertical Schlumberger Geoelectric method in the Lecturer Housing Complex of Uncen Kali Acai, VIM Village, Abepura District, Jayapura City. This study aims to determine the soil layer, determine the location and depth of the soft soil layer, determine the soft and hard soil. Data retrieval using geoelectric resistivity method with vertical Schlumberger configuration. The instrument used for subsurface surveys is the HV 500 AK resistivity meter. Field measurements obtained electric current and voltage values and then calculated the apparent resistivity values obtained from analysis using IP2win software to see the distribution profile, depth, and thickness of the soil layer.After doing research in the field, it can be seen that the subsurface structure at the research site is dominated by soft clay material with a resistivity value of 0.24 -692.00 Ωm. . In addition, there is a layer of hard rock in the form of a mixture of limestone with a resistivity value of 1181.00 - 8319.00 Ωm.. And the types of subsurface rocks found at the research site are clay, sandstone and limestone.
Relationship between Oil Prices and Russia Exchange Indices: Analysis of Frequency Causality
Authors: Akbulaev Nurkhodzha , Muradzada Imangulu , Hasanov Ziyadhan
Published: September 2023

One of the important research topics is the potential impact of changes in oil supply and demand on current and future price movements or financial market instruments. Especially in developing countries such as Russia, which is an oil and natural gas exporter, sanctions on oil exports affect the country on a macroscale and businesses on a microscale. In this context, the aim of the aforementioned study is to examine the causality relationship between Brent oil price, which is an important input for the chemistry and transportation sectors, and the Moscow Stock Exchange MOEX Chemicals, MOEX Transport, and MOEX Financials indices using Breitung and Candelon frequency causality analysis. For this purpose, monthly data for the period January 2015–December 2022 were analysed first with traditional Granger causality analysis, Toda and Yamamoto causality analysis, and finally with Breitung and Candelon frequency causality analysis. Traditional Granger causality analysis (Toda and Yamamoto causality analysis) revealed a bidirectional causality relationship between Brent Petrol and the MOEX Chemistry and MOEX Finance Indices. However, there is no causality between Brent Petroleum and MOEX Transport. As a result of the Breitung and Candelon frequency causality analysis, causality has been determined from oil prices to stock prices in the chemical sectors, both in the short term, in the medium term, and in the long term. Only short-term causality has been found between Brent oil prices and stock prices in the financial and transportation sectors.
Forecasting the Total Non-coincidental Monthly System Peak Demand in the Philippines: A Comparison of Seasonal Autoregressive Integrated Moving Average Models and Artificial Neural Networks
Authors: Parreno Samuel John
Published: September 2023

This paper aims to determine suitable seasonal autoregressive integrated moving average (SARIMA) and feed-forward neural network (FFNN) models to forecast the total non-coincidental monthly system peak demand in the Philippines. To satisfy the stationary requirement of the SARIMA model, seasonal differencing, and first-differencing were applied. The findings reveal that SARIMA (0,1,1)(0,1,1)12 is the appropriate SARIMA model. All the model parameters were statistically significant. Also, the residuals were normally distributed. For the feed-forward neural networks, the NNAR (10,1,6)12 was found to be the appropriate model. The evaluation statistics indicate that the models developed are suitable for forecasting. A comparison of the models has been performed by examining their respective root mean square error (RMSE), mean absolute error (MAE), and mean absolute percent error (MAPE) values. It was found that the FFNN performs better and is the most suitable model to forecast peak demand.
Momentum in Low Carbon and Fossil Fuel Free Equity Investing
Authors: Gurrib Ikhlaas
Published: September 2023

The Conference of the Parties to the United Nations Framework Convention on Climate Change (COP27) reiterated that climate change remains a critical issue for humanity.  Especially, it stressed on the need to encourage a clean energy mix, including renewable and low-emission energies, as part of the continuing transition toward a cleaner and sustainable energy.  Using daily indices data covering the period 1st January 2017 to 28th February 2023, this paper studies the performance of 2 family classes among sustainability indices, namely, low carbon and fossil fuel free indices.  Specifically, this study sheds further light by assessing the performance of trading strategies which are based on the momentum of low carbon and fossil-fuel free based indices.  The performance is based on a thorough analysis of the Relative Strength Index (RSI) and is captured through the Sharpe and Sharpe per trade measures.  We decompose the analysis into pre and post COVID-19 to provide some insights how these sustainable energy investments were impacted by the coronavirus pandemic.  Findings support an adjusted overbought/oversold RSI 75(25) model resulted in less false signals than the traditional 70 (30) model.  Relative to the post COVID-19 period, all selected equity indices performed poorly in the pre- COVID-19 period, with negative returns, except for the MSCI World Low Carbon Leaders and the SPDR MSCI Emerging Markets Fossil Fuel Free equity indices.  Comparatively, in the post COVID-19 period, all indices witnessed superior return performance, with also increased risk levels.  SPDR MSCI Emerging Markets Fossil Fuel Free index ranked first, even after adjusting for number of trades.  Investments post COVID-19 early impact period performed better than a naive buy-and-hold strategy for greener investments like low carbon and fossil fuel free equity indices.
The Volatility Assessment of CO2 Emissions in Uzbekistan: ARCH/GARCH Models
Authors: Kuziboev Bekhzod , Vysušilová Petra , Salahodjaev Raufhon , Rajabov Alibek , Rakhimov Tukhtabek
Published: September 2023

The study is pioneer to investigate the volatility of CO2 emissions in Uzbekistan. To this end, ARCH (Autoregressive Conditional Heteroskedasticity) and GARCH (Generalized Autoregressive Conditional Heteroskedasticity) models are used spanning the period 1925-2021 for the annual data of CO2 emissions. The results indicate that ARCH model is more adequate that GARCH model in the volatility assessment. Furthermore, it is found that the volatility of CO2 emissions in Uzbekistan is very high. The policymakers have to consider the high volatility of CO2 emissions in the environmental policy measures dedicated to reduce carbon dioxide emissions.
Islamic Financial Surplus for Energy and Gas Investment: Towards Financial Inclusion for Improving Living Condition of Needy and Poor in Nigeria
Authors: Amuda Yusuff Jelili
Published: September 2023

Undoubtedly, Nigeria is the topmost producer of energy and gas in the entire African continent. However, there is an abject poverty in the country and the global financial crisis and weaknesses of conventional financial system in predominant Muslim countries including Nigeria have not made the experts to critically explore Islamic financial surplus for energy and gas investment in order to solve the problems of needy and poor in the country.  There is need to bridge the gap of financial inclusion with specific attention on energy and gas investment with specific attention on Islamic financial surplus in order to improve the living conditions of the needy and poor in the country.  It is essential to utilize financial surplus derivable from energy and gas investment for sustainable financial inclusion for enhancing living condition of the needy and poor people in the society. Shari’ah compliant investment is emphatically stressed as a central climax of this study. Qualitative research design was employed in this paper using content analysis and   systematic literature review. The results of the study demonstrated that Islamic financial surplus can be instrumentally related to energy and gas investment where the surplus can be adequately used for empowerment of the needy and poor people in the society. By emphasizing on Islamic financial surplus especially in connection with energy and gas investment, it will expand the understanding about Islamic economy system for financial inclusion beyond banking sector. Thus, adequate use of Islamic financial surplus in energy and gas sector will practically reduce high rate of abject poverty among the needy and the poor in the Nigerian society by attaining economic growth.  Most studies on Islamic financial surplus are emphatically on banking sector. This study expands the understanding of the Islamic financial surplus by importantly relating it to energy and gas sector.
Electricity - Saving Behavioral Intention of Farmers
Authors: Mai Van Nam , Nguyen Quoc Nghi
Published: September 2023

The study applied the Theory of Planned Behavior - TPB (Ajzen, 1991) and the Norm Activation Model - NAM (Schwartz, 1977) to demonstrate the affecting factors on behavioral intention in energy saving of farmers in the Mekong Delta, Vietnam. Research data were collected from 204 farmer households using electricity in four provinces: Tien Giang, Dong Thap, An Giang, and Kien Giang. Applying the structural equation modeling (SEM), the study has pointed out the affecting factors mentioned above, including personal ethical standards, subjective norms, perceived behavioral control, perceived benefit, attitude, product quality, and energy policy. Besides, the study has shown that the intention to save electricity positively impacts the electricity-saving behavior of farmers
Features of Stimulating the Issue of Green Bonds in the Modern Economy
Authors: Borodin Alex , Zaitsev Vladislav , Shash Nataliya , Chibisov Kirill
Published: September 2023

There are large number of companies that form investment portfolios of modern investors have a high level of CO2 emissions. In particular, such sectors of the economy include the oil and gas sector, metallurgy, electricity. For the transition of these sectors of the economy to a car-bon-neutral status, it is necessary to attract significant funding. One of the main instruments of such financing is green bonds. The purpose of the study is to develop a mechanism to encourage companies to implement green projects by issuing green bonds with coupon payments, which will be partially compensated. In the course of studying the problem posed, possible options for linking the Carbon Border Adjustment Mechanism (CBAM) and green bonds were also considered. The study was conducted on the basis of methods of comparison, modeling, analysis and deduction. The result of the work is the developed mechanism of tax incentives for the issuance of green bonds by companies, which can be applied in any country. The study was conducted taking into account the introduction of additional reducing coefficients to the mineral ex-traction tax, property tax and income tax. The study showed that in the case of partial compensation of coupon payments on bonds, the state does not need to introduce lowering coefficients to the tax rate, it is enough to use a tax deduction from income tax in the amount of the planned compensation of coupon payments.
The Relationship between the Share of Renewable Energy in Total Energy Consumption and Economic Growth: Kazakhstan and Turkiye Comparision
Authors: Abdibekov Saken Ualikhanovich , Kulbay Bauyrzhan Susaruly , Gridneva Yelena Evgenevna , Kaliakparova Gulnar Shaimardanovna , Ashimbayev Tolendi Aripbaevich , Perneyeva Gulmira Amangeldiyevna
Published: September 2023

This study examines the relationship between the share of renewable energy sources in total energy consumption and economic growth by comparing the data of Kazakhstan and Turkiye using the annual data for the 1991-2019 period. We collected the data from the World Bank website (https://data.worldbank.org/indicator/). Impulse - Response Analysis and Variance Decomposition Analysis were applied to the data using the Vector Autoregressive (VAR) model. Research findings showed that although there is a relationship between renewable energy consumption and economic growth for Kazakhstan, this is not valid for Turkiye. The causality of this relationship, which is valid for Kazakhstan, is determined by the Granger causality analysis. According to the analysis, renewable energy consumption affects Kazakhstan's economic growth, but this effect does not translate into a causal relationship. Again, for both countries, we see that the impact of renewable energy shocks on economic growth remained limited and faded in a few periods. Another important finding is that the share of renewable energy consumption in the economic growth variance decomposition is higher for Kazakhstan.
Simulating Generalised Locational Marginal Pricing for Power Markets in East Africa
Authors: Mabea Geoffrey
Published: September 2023

There is an enormous opportunity for adopting a wholesale electricity market under locational marginal pricing. Besides ensuring competition and accounting for network congestion, the price signal reflects a space-time electricity economy. This paper examines the prospects of introducing a single East African electricity market in five selected partner states. It reports on a pioneering effort to simulate the coupling of power markets, estimate locational marginal prices, and determine the economic benefits of cross-border power trade and competition across these five countries. The nodes representing the primary power systems in these five countries are simulated in an optimal power flow model using optimisation software GAMS. The total welfare of electric power market integration is estimated at $ 4.8 million/hr, representing a welfare gain of $ 2.6 million/hr, thus, net total welfare increases by 118%. The simulation also investigates the implications for locational prices and power flows under constrained and unconstrained scenarios. To secure the benefits of an integrated electricity market, it is vital to pursue significant institutional restructuring, a robust transmission infrastructure, and the harmonisation of energy policies.
Examining the Dynamics of Labour Force Participation, Carbon Dioxide Emission and Population Health in Sub-Saharan Africa
Authors: Oyedele Ovikuomagbe , Tella Sheriffdeen Adewale
Published: September 2023

This study examined the dynamic causal relationship between population health, carbon dioxide (CO2) emission and labour force participation. The study employed the block exogeneity wald test after estimating a panel VAR model using data for 24 sub-Saharan African countries from 1990 to 2018. The dynamic interactions among the variables and effect of shocks was also examined using the variance decomposition analysis and impulse response functions. For robustness, the estimation was done using both aggregate labour force participation and disaggregated labour force participation inorder to investigate the differentials by gender. The results showed evidence of a feedback effect between life expectancy and total labour force participation. This also holds for male labour force participation however, a unidirectional causality was found from female labour force participation to life expectancy. A one standard deviation shock in CO2 emission had a negative impact on life expectancy. Life expectancy also had the greatest contribution to variations in CO2 emission. Male labour force participation shocks had a consistently negative impact over the ten-year period, however, shocks from female labour force participation had the least impacts on CO2 emission. Environmental reforms encouraging less polluting energy and technology use is important for CO2 emission reduction, which further increases life expectancy and ultimately labour force participation rates.
Ukraine`s Bioenergy Sector: Trends and Perspectives for the Post-war Green Energy Transition
Authors: Kurbatova Tetiana , Sotnyk Iryna , Trypolska Galyna , Gerlitz Laima , Skibina Tetiana , Prokopenko Olha , Kubatko Oleksandra
Published: September 2023

The paper investigates trends in bioenergy development in Ukraine and its role in accelerating the green energy transition in the post-war period. The focus of the article is on the use of bioenergy resources for electricity generation, heat energy and liquid biofuel production. In this context, the potential of biomass, state support mechanisms, the results of their influence on bioenergy capacities deployment and the barriers restraining this sector development are considered. The study’s results proved that the inconsistency of the state policy and the failure to consider the specifics of energy production based on various bioenergy resources caused a significant lag in its development compared to other renewable energy technologies. With this in mind, the article systematizes strengths and weaknesses, opportunities and threats, and based on them, strategic recommendations for bioenergy development in Ukraine in the post-war period are developed.
Unveiling the Role of Business Freedom to Determine Environmental Degradation in Developing Countries
Authors: Audi Marc , Ali Amjad
Published: September 2023

Presently, environmental degradation is the prime concern of the world economies as a whole. Following this concern, Sustainable Development Goals designed by the UNDP raise the slogan “Clear Environment for All”. This paper has analyzed the impact of business freedom on environmental degradation in the case of 110 developing countries from 2000 to 2020. Panel least squares and generalized moments methods have been applied to check the impact of explanatory variables on dependent variables. The results show that business freedom and renewable energy consumption have a negative and significant impact on environmental degradation in selected developing countries. The results explain that financial development has a positive and significant impact on environmental degradation in developing countries. Whereas urbanization has a positive and significant impact on environmental degradation. Thus, for the reduction of environmental degradation business freedom and renewable energy consumption should be promoted, whereas negative linkages of urbanization and financial development should be reduced.
Exploring the Economic Recovery of Italy’s Regions Post-COVID-19: A focus on Energy, Services, ICT Opportunities, and the Digital Divide
Authors: Marino Alfonso , Pariso Paolo , Picariello Michele
Published: September 2023

The World is gradually coming out of the COVID-19 emergency and what emerges from the Italian scenario presents two sides of the same coin. A large part of the investments made at this juncture have been distributed directly to the regions. Unfortunately, in the last nine years, the twenty Italian regions have adopted different ITCs and distributed different levels of services and wealth. In doing so, there has been a lack of opportunity and development. The paper aims to understand how the Italian regions have recovered economically by analyzing variables such as services, the digital divide, energy management and the economic inequality. The investigation with a qualitative and quantitative analysis helps to understand these issues for Italian and non-governmental institutions.
Scaling up Renewable Energy Financing through Islamic Blended Finance: Case Study in Indonesia
Authors: Mukhtasor Mukhtasor , Listiana Lisa , Hermala Irvan , Nur Fauziah Najim
Published: September 2023

This paper outlines to explore the influencing factors of unachieved target of the energy mix from renewable energy (RE) sources in Indonesia, to develop an integrated Islamic blended finance model for financing RE projects in Indonesia, and to analyse the costs and benefits of the proposed model. This research employs an exploratory sequential mixed method with the qualitative phase through in-depth interviews and Focus Group Discussions (FGD) and quantitative phases using primary and secondary data to simulate the Agent-Based Model (ABM) of the proposed model. The paper found three main financing issues on RE sector in Indonesia, including high investment costs and long payback period of RE projects, high risk perception to finance RE projects, and the uncertainty of investment return for RE developers. Besides, based on ABM simulation, Islamic blended finance can contribute to reduce the required period to achieve the energy mix target. Despite the less familiarity of Islamic finance instrument for the RE sector, an initial of a pilot project in place of the proposed business model might increase common awareness regarding this potential. Hence, policy implication delivered in this paper should be a key component to scale up RE sector via Islamic blended finance instrument.
The Impact of Electricity Energy Production, Fossil Energy Consumption, Renewable Energy Consumption, Deforestation, and Agriculture towards Climate Change in Middle-Income Countries
Authors: Sasana Hadi , Prasetyanto Panji Kusuma , Wijayanti Diah Lufti , Fatimah Ari Nurul
Published: September 2023

This study aims to determine the effect of electrical energy production, fossil energy consumption, renewable energy consumption, deforestation and agriculture on climate change in middle-income countries. The method of analysis uses the Fixed Effect Model Cross-section weight regression model. The results of the study found that the production of electrical energy, the consumption of fossil energy had a significant positive effect on climate change. The development of environmentally friendly technologies in the agricultural sector needs to be carried out so that the sector does not damage the climate in middle-income countries. Reducing deforestation and consumption of renewable energy in middle-income countries has a positive effect on efforts to cure climate change.
Electricity Trade and Economic Growth in South Africa
Authors: Hlongwane Nyiko Worship , Daw Olebogeng David
Published: September 2023

The study investigates the relationship between electricity trade and economic growth in South Africa. The study utilised time series data spanning from 1985 to 2022 collected from secondary sources like the Quantec. The study employed DF-GLS and KPSS unit root, ARDL Bounds cointegration test, ARDL ECM model, Granger causality and residual diagnostics tests. The study discovered the presence of short and long run negative relationships between electricity trade and economic growth in South Africa. The Granger causality revealed unidirectional causality running from economic growth to electricity generation in South Africa. The study recommends the reduction of electricity trade to boost economic growth in South Africa for the period understudy. The study further makes the following recommendations, in future the studies should consider investigating electricity infrastructure and economic growth in South Africa utilising either time series or panel data analysis.