bluuebunny/crossref_metadata_2025 huggingface dataset:
Kajian ritel modern berdasarkan analisis space syntax di Kota Semarang
Authors: Adriyanto Rizky , Aliyah Istijabatul , Yudana Galing
Published: July 2022

Ritel modern di Kota Semarang berkembang pesat, sehingga penentuan lokasinya perlu diperhatikan agar dapat memberikan pelayanan yang efisien. Dalam menentukan lokasi ritel modern yang baik, faktor aksesibilitas menjadi penting agar dapat mudah terjangkau oleh pengunjung. Analisis space syntax merupakan alat yang digunakan untuk menganalisis aksesibilitas melalui 3 variabel utama yaitu konektivitas, integrasi, dan intelligibility. Penelitian ini bertujuan untuk menganalisis keberadaan ritel modern di Kota Semarang berdasarkan analisis space syntax dan overlay menggunakan sistem informasi geografis. Hasil analisis menunjukkan bahwa sebagian besar ritel modern di Kota Semarang sudah berlokasi pada area dengan tingkat aksesibilitas tinggi yang ditunjukkan dengan berlokasi pada area dengan nilai konektivitas dan integrasi yang tinggi. Secara umum, lokasi ritel modern di Kota Semarang sudah sesuai berdasarkan dari hasil analisis space syntax.
Manifestasi konsep kosmologi Jawa dalam perkembangan pola ruang kawasan pusat pemerintahan Surakarta
Authors: Urfan Arnindya Afifah , Aliyah Istijabatul , Yudana Galing
Published: July 2022

Pusat pemerintahan merupakan tempat berlangsungnya kegiatan politis dan administratif bagi suatu wilayah. Kota Surakarta yang sebelumnya merupakan ibukota Kerajaan Mataram Islam telah mengalami banyak perkembangan termasuk pada kawasan pusat pemerintahan. Terbentuknya Kota Surakarta pada awalnya didasari oleh konsep kosmologi Jawa, yaitu  kepercayaan dan cara pandang masyarakat Jawa terhadap dunia, serta keterkaitan manusia dan lingkungan pada penataan ruang. Sebagai kota budaya pada masa kini, elemen kebudayaan tidak lagi menonjol dalam penataan pusat pemerintahan. Hal ini melatarbelakangi kajian manifestasi konsep kosmologi Jawa pada dinamika pola ruang pusat pemerintahan Kota Surakarta. Pada penelitian ini digunakan analisis deskriptif yang mencakup (1) identifikasi konsep kosmologi Jawa, (2) analisis pola ruang pusat pemerintahan berdasarkan kosmologi Jawa, dan (3) perkembangan pola ruang pusat pemerintahan berdasarkan kosmologi Jawa. Hasil penelitian menunjukkan bahwa Keraton Kasunanan Surakarta adalah satu-satunya pusat pemerintahan yang menggunakan kosmologi Jawa dalam penataan ruangnya. Walaupun demikian, beberapa konsep dari kosmologi Jawa, seperti mancalima dan mancapat, saat ini sudah hilang akibat peristiwa politik dan sosial yang terjadi di Kota Surakarta.
Perubahan penggunaan lahan dan faktor-faktor yang mempengaruhi di kawasan Jalan Ahmad Yani Kartasura berdasarkan persepsi masyarakat
Authors: Mulya Qonnita Putri , Aliyah Istijabatul , Yudana Galing
Published: July 2022

Pesatnya perkembangan Kota Surakarta berdampak pada kawasan di sekitarnya. Salah satu kawasan yang terdampak adalah Kartasura di Kabupaten Sukoharjo yang berkembang pesat didukung oleh keberadaan Jalan Ahmad Yani sebagai jalan arteri primer yang melayani kegiatan dalam skala luas. Perkembangan Kartasura terlihat dari perubahan penggunaan lahan pada kawasan Jalan Ahmad Yani Kartasura. Penelitian ini dilakukan untuk mengetahui faktor-faktor yang mempengaruhi perubahan penggunaan lahan pada kawasan Jalan Ahmad Yani Kartasura berdasarkan persepsi masyarakat menggunakan analisis skoring. Pendekatan yang digunakan adalah pendekatan deduktif dengan menggunakan kuesioner untuk memperoleh persepsi masyarakat. Hasil penelitian menunjukkan bahwa perubahan penggunaan lahan pada kawasan penelitian terjadi karena faktor-faktor peluang ekonomi, ketersediaan sarana dan prasarana, aksesibilitas, kondisi fisik lingkungan, kebijakan pengembangan, harga lahan, dan sosial ekonomi.
Kesesuaian aksesibilitas kawasan wisata budaya Kota Surakarta ditinjau dari jalur pedestrian sebagai NMT
Authors: Nugraheni Indah , Yudana Galing , Rini Erma Fitria
Published: July 2022

Kota Surakarta sebagai Kota Budaya memiliki beragam destinasi wisata budaya sebagai komponen pengembangan kota. Aksesibilitas merupakan hal pendukung penting  yang dipenuhi dengan menyediakan sarana transportasi publik untuk menunjang pergerakan wisatawan. Integrasi transportasi berbasis kendaraan (motorized transport, MT) dengan non kendaraan (non-motorized transport, NMT), seperti jalur pedestrian sebagai feeder bagi transportasi publik, dibutuhkan untuk menciptakan transportasi yang berkelanjutan. Namun, aksesibilitas pada kawasan wisata budaya Kota Surakarta belum didukung oleh keberadaan jalur pedestrian yang baik. Penelitian ini bertujuan untuk mengetahui kesesuaian jalur pedestrian sebagai non-motorized mode feeder untuk mendukung aksesibilitas di kawasan wisata budaya Kota Surakarta. Hasil skoring menggunakan skala Guttman menunjukan bahwa kesesuaian jalur pedestrian sebagai non-motorized mode feeder untuk mendukung aksesibilitas di kawasan wisata budaya Kota Surakarta termasuk dalam kategori mendekati tidak sesuai dengan capaian kesesuaiannya sebesar 41,26%. Hanya aspek keamanan  yang memiliki capaian lebih dari 50%. Untuk aspek lainnya yaitu aspek konektivitas, kenyamanan, dan kemudahan masih di bawah 50%. Hal ini menunjukan bahwa masih diperlukan peningkatan jalur pedestrian agar dapat mencapai kondisi yang sesuai pada masing-masing segmen dari segi keamanan, konektivitas, kenyamanan, dan kemudahan.
Backlog kepenghunian rumah di Kota Surakarta dan faktor yang mempengaruhinya
Authors: Hanifa Dian Rivia , Yudana Galing , Rini Erma Fitria
Published: July 2022

Perkembangan Kota Surakarta yang cukup pesat mengakibatkan jumlah penduduk yang meningkat dan berpengaruh terhadap kebutuhan rumah di Kota Surakarta. Kebutuhan rumah yang tidak diimbangi dengan penyediaan perumahan menyebabkan terjadinya backlog kepenghunian rumah yang besar di Kota Surakarta. Berdasarkan data Badan Pusat Statistik Susenas tahun 2018, jumlah backlog kepenghunian rumah di Kota Surakarta sebesar 33.446 KK. Tujuan dari penelitian ini adalah mengetahui faktor-faktor yang berpengaruh terhadap angka backlog kepenghunian rumah di Kota Surakarta. Dengan menggunakan pendekatan deduktif kuantitatif, analisis faktor dilakukan terhadap data kuesioner oleh 100 responden yang tersebar di Kota Surakarta. Hasil penelitian didapatkan faktor yang mempengaruhi backlog kepenghunian rumah terbagi dalam 3 kelompok faktor, yaitu: (1) Faktor ekonomi mampu menjelaskan 42,436% dari keragaman total, terdiri atas pendapatan, jenis pekerjaan, harga sewa rumah, dan kemudahan pinjaman; (2) Faktor infrastruktur dapat menjelaskan 13,612% dari keragaman total, terdiri atas kemudahan transportasi, prasarana lingkungan, sarana lingkungan, dan jarak dengan pusat kota; (3) Faktor pertumbuhan penduduk, terdiri atas tingkat pertumbuhan penduduk dengan besar varian terkecil yaitu sebesar 12,213%. Kelompok faktor ekonomi memiliki pengaruh paling besar dalam mempengaruhi backlog kepenghunian rumah di Kota Surakarta.
Kesesuaian sepuluh destinasi wisata terhadap konsep Community-based Tourism di Kecamatan Ngargoyoso, Karanganyar
Authors: Widyaningsih Aulia Basundhari , Aliyah Istijabatul , Putri Rufia Andisetyana
Published: July 2022

Kecamatan Ngargoyoso merupakan kecamatan yang dicanangkan menjadi wisata dengan Konsep Community Based Tourism. Potensi wisata yang dikembangkan antara lain pelestarian budaya lokal, makanan khas setempat, sumber mata air yang melimpah, serta pelibatan masyarakat dalam berbagai bentuk. Namun, terdapat beberapa atraksi yang ditengarai merusak lingkungan lokal seperti wisata di tengah kebun teh dan pembangunan goa di ujung tebing. Peberdaan tersebut memunculkan kebutuhan penelitian yang bertujuan menganalisis kesesuaian pengembangan destinasi wisata terhadap Konsep Community Based Tourism di Kecamatan Ngargoyoso. Dengan pendekatan penelitian kuantitatif deskriptif, data dikumpulkan melalui observasi lapangan, wawancara, dan kuesioner. Berdasarkan hasil penelitian didapatkan bahwa terdapat 15 sub komponen dari total 23 komponen yang tidak sesuai dengan pengembangan destinasi wisata terhadap Konsep Community Based Tourism.
Faktor-faktor yang mempengaruhi manajemen informasi spasial untuk perencanaan pembangunan (studi kasus: Bappeda Provinsi Daerah Istimewa Yogyakarta)
Authors: Faizal Muhammad Yudha , Djunaedi Achmad
Published: July 2022

Data dan informasi spasial merupakan unsur penting dalam setiap proses perencanaan, termasuk perencanaan pembangunan yang dijalankan oleh pemerintah daerah. Visualisasi keruangan yang disajikan oleh data dan informasi spasial memberikan perspektif baru yang menentukan produk dan luaran dari sebuah rencana. Hal ini melatarbelakangi Bappeda DIY untuk mendorong penggunaan informasi spasial pada kegiatan penyusunan Rencana Kerja Pembangunan Daerah (RKPD) pada dua tahun terakhir. Pada pelaksanaannya, Bappeda DIY telah mampu untuk mengintegrasikan kegiatan manajemen informasi spasial dengan kegiatan perencanaan pembangunan daerah. Penelitian ini bertujuan mengidentifikasi faktor-faktor yang mempengaruhi kegiatan manajemen informasi spasial yang dilakukan oleh Bappeda DIY. Dengan menggunakan desain studi kasus yang menonjolkan keunikan, pendekatan abduksi menunjukkan bahwa terdapat beberapa perbedaan dari model yang telah berkembang. Kegiatan manajemen informasi spasial yang dijalankan oleh Bappeda DIY memiliki beberapa perbedaan dengan Model IMGC dan Model POSMAD. Perbedaan tersebut dipengaruhi oleh empat hal, yaitu faktor sumber daya manusia, faktor kebijakan atau regulasi, faktor teknologi, dan faktor karakter informasi. Hasil temuan ini dapat digunakan sebagai acuan pemerintah daerah lain untuk mengembangkan manajemen informasi spasial.
Sektor informal: peninjauan kembali dalam perspektif konseptual
Authors: Khairi Dhoni Arya , Marsoyo Agam
Published: July 2022

Pada tahun 1972, ILO sebagai institusi ketenagakerjaan internasional memperkenalkan tujuh kriteria konsep sektor informal. Kemunculan konsep sektor informal tersebut lahir di tengah geliat pembangunan negara dunia ketiga yang semangat dengan konsep pertumbuhan ekonomi melalui industrialisasi. Memasuki dekade 2000-an dan 2010-an, eksistensi sektor informal tetap dirasakan keberadaannya di berbagai negara. Namun, keberadaannya di tengah konsep pembangunan tidak hanya sekedar mengejar pertumbuhan ekonomi, tetapi juga lebih mengedepankan konsep pembangunan yang komprehensif dan berkelanjutan. Penelitian ini memiliki tujuan meninjau kembali konsep sektor informal dari awal kemunculannya hingga saat ini dalam konteks teori pembangunan. Hal ini menggunakan metodologi analisis isi induktif-kualitatif yang selanjutnya 28 kasus penelitian sektor informal pedagang kaki lima di berbagai negara dianalisis ke dalam unit-unit informasi, kategori, dan konsep dalam konteks teori pembangunan. Hasil penelitian menunjukkan adanya evolusi konsep sektor informal seiring dengan evolusi teori pembangunan. Konsep sektor informal mengalami evolusi dari dekade 1970-an hingga 2010-an yang ditandai dengan semakin banyak konsep sektor informal yang memiliki keterkaitan langsung dengan teori pembangunan. Bentuk evolusi konsep sektor informal juga ditunjukkan dengan adanya perbedaan antara konsep sektor informal menurut ILO (1972) yang terdiri dari tujuh kriteria dengan konsep sektor informal dekade 2010-2019 yang terdiri dari 16 kriteria.
Identifikasi penerapan peraturan garis sempadan bangunan (GSB) pada ruas Jalan Kelapa Gading di Jakarta Utara
Authors: Himawan Muchamad Taufiqur , Akmal Muhamad Faiz , Hantono Dedi
Published: July 2022

Perkembangan kegiatan ekonomi dan bisnis di DKI Jakarta berdampak pada intensitas penggunaan lahan yang tinggi dan munculnya pelanggaran peraturan garis sempadan bangunan, terutama pada muka bangunan. Salah satu titik perekonomian di DKI Jakarta berada di sepanjang Jalan Boulevard Raya yang berbatasan dengan daerah Kayu Putih di bagian selatan dan daerah Koja di bagian utara. Penelitian inin melakukan analisis pelanggaran peraturan garis sempadan bangunan (GSB) serta pengaruh penerapan aturan GSB terhadap kenyamanan pengguna lain di sekitarnya. Penilaian terhadap penerapan GSB didasarkan pada Pergub No. 135 tahun 2019 tentang Pedoman Tata Bangunan. Hasil penelitian menunjukkan bahwa dari 765 bangunan di Jalan Boulevard Raya,  terdapat 39,7% bangunan melanggar peraturan GSB. Adapun dampak dari pelanggaran garis sempadan bangunan yang terjadi adalah kemacetan, minimnya ruang terbuka, aktivitas parkir di ruas jalan, dan hilangnya jalur pedestrian.
Inisiasi model konseptual Transfer of Development Rights (TDR) bagi kawasan cagar budaya
Authors: Rahadyan Gusti Aditya , Iskandar Doddy Aditya
Published: July 2022

Kawasan Pecinan Ketandan di Kota Yogyakarta sebagai salah satu bagian dari kawasan permukiman etnis Tionghoa memiliki keterbatasan dalam hal pengembangan bangunan setelah ditetapkan sebagai kawasan cagar budaya. Akibatnya, timbul kesulitan bagaimana menyetarakan hak milik dan hak pembangunan dikarenakan fungsi perlindungan dan pelestarian yang melekat tersebut. Untuk mengatasi hal tersebut, pemerintah telah membentuk instrumen salah satunya melalui pengalihan hak membangun (transfer of development rights/TDR). Agar dapat berfungsi secara optimal sebagai sebuah kebijakan, maka perlu dirumuskan model konseptual TDR melalui pendekatan ahli. Dengan memilih Kawasan Pecinan Ketandan di Kota Yogyakarta sebagai studi kasus, perumusan model konseptual TDR dilakukan melalui metode deskriptif kualitatif dengan alat analisis Delphi. Hasil penelitian menghasilkan model konseptual TDR di Kawasan Pecinan Ketandan yang terdiri atas tahap awal, tahap transaksi serta tahap akhir dan evaluasi. Didalam model tersebut telah termuat indikator-indikator utama keberhasilan TDR, yaitu adanya area pengirim, area penerima, pasar TDR, dan nilai TDR.
Efektivitas perencanaan partisipatif dan perancangan model perencanaan partisipatif dalam musrenbang RKPD Kecamatan Tebing Syahbandar, Kabupaten Serdang Bedagai, Sumatera Utara
Authors: Saragih Jef Rudiantho , Ritonga Nisma Khairani , Harmain Ummu
Published: July 2022

Perencanaan partisipatif merupakan konsekuensi logis dari perubahan paradigma perencanaan sentralistik ke perencanaan desentralistik. Melalui pelibatan masyarakat dan para pemangku kepentingan, musrenbang merupakan bentuk partisipasi, transparansi, dan akuntabilitas. Penelitian ini bertujuan untuk: (1) mendeskripsikan implementasi perencanaan partisipatif (musrenbang); (2) menganalisis efektifitas perencanaan partisipatif; dan (3) merancang model perencanaan partisipatif dalam musrenbang RKPD.  Penelitian dilaksanakan bulan Februari-Maret 2020 dengan mengambil satuan analisis pelaksanaan Musrenbang RKPD Kecamatan Tebing Syahbandar, Kabupaten Serdang Bedagai, Sumatera Utara pada tahun 2020.  Pengambilan sampel dan narasumber ditetapkan dengan kuota sampling sebanyak 60 orang responden pemangku kepentingan musrenbang. Data dianalisis dengan menggunakan metode deskriptif, direct rating method (DRM), dan analisis SWOT.  Musrenbang kecamatan dilaksanakan dengan tahapan: musrenbang desa, pramusrenbang kecamatan, input ke e-planning, musrenbang kecamatan, dan pascamusrenbang kecamatan.  Efektivitas musrenbang diukur dari tiga dimensi, yaitu pencapaian tujuan, integritas, dan adaptasi.  Dimensi pencapaian tujuan berada pada skor 3,39 (cukup efektif), dimensi integritas 3,49 (efektif), sementara dimensi adaptasi 3,44 (efektif).  Hasil analisis SWOT menunjukkan bahwa pelaksanaan musrenbang berada pada jalur yang tepat, namun berbagai aspek perlu ditingkatkan. Strategi agresif difokuskan pada Strategi SO, yaitu: (1) meningkatkan fungsi kecamatan dan integritas pelaku musrenbang untuk meningkatkan partisipasi masyarakat, (2) meningkatkan kesesuaian program yang diajukan berdasarkan aspirasi masyarakat, (3) meningkatkan pemahaman dan pemanfaatan aplikasi e-planning dalam proses musrenbang kecamatan, dan (4) meningkatkan penggunaan teknologi informasi secara daring untuk mendorong transparansi, akuntabilitas, dan partisipasi publik.
TINGKAT KEMIRIPAN DAN KOMPETISI STRUKTUR EKSPOR KOMODITAS REMPAH-REMPAH INDONESIA DI PASAR INTERNASIONAL
Authors: Anggrasari Herdiana , Mulyo Jangkung Handoyo
Published: July 2022

Economic globalization provides greater opportunities and challenges for the agricultural sector, especially those of spices throughout the world. The commodity does not only need to compete in the outside market, therefore it is in the free market and has an important one. The purpose of this study is 1) to find out the potential and opportunities for the export of Indonesian goods by looking at the level of similarity in the structure of exports and 2) knowing the level of competition with Indonesia and other countries in the International Market. This study uses secondary data obtained from UNComtrade within a period of 15 years (2000-2017). The data used are Vietnamese exports with India, the Netherlands, China and Madagascar. Export of Compatibility Index (ESI) and Export Overlap Index (IEO) to determine the level of similarity and level of competition for spice exports. The results of the study show that 1) Trade in spice commodities between Indonesia and countries that have similarity levels that are looking for decline and 2) competition between Indonesia and consumer countries (below 30). The findings show the potential and opportunities of Indonesian exports in the International Market are still wide open.
PENGARUH PENERAPAN TEKNOLOGI INFORMASI TERHADAP PENINGKATAN KEUNGGULAN KOMPETITIF PADA USAHA KEDAI KOPI DI KOTA BANDUNG
Authors: Waringga Kristoforus Farian , Riana Fitria Dina , Aprilia Anisa
Published: July 2022

A coffee shop is a business that is currently a very profitable choice so that it is increasingly popular with business people in Indonesia. Challenges arise due to the intense competition and environmental uncertainty in the market. Information technology becomes a bridge in order to have a more responsive, effective and efficient performance. This research was conducted with the aim of examining the effect of the application of information technology on increasing competitive advantage through supply chain performance variables, information sharing, and supply chain integration. In this study, 59 coffee shops located in Bandung were used as research samples. Furthermore, the data will be analyzed using SEM-PLS in order to know how the influence between variables using the WarpPLS v7.0 software. The results show that information technology has a significant effect on increasing competitive advantage through supply chain performance variables, information sharing, and supply chain integration. So, coffee shop owners or managers can improve their supply chain performance by utilizing information technology because information technology helps coffee shop businesses work effectively and efficiently, is more responsive, has an integrated work system and knows consumer needs because it can be closer to consumers
KONTRIBUSI USAHATANI TEMBAKAU TERHADAP PENDAPATAN RUMAH TANGGA DI DESA WUNGUREJO KECAMATAN RINGINARUM KABUPATEN KENDAL
Authors: Selfia Yeni , Hidayati Nanik , Majid Abdul , Hikmah Mei Shinta Kussetyaning
Published: July 2022

The area of tobacco plantations owned by farmers in Wungurejo Village does not guarantee the high yields produced so that it greatly affects the household income of farmers. The purpose of this study was to determine how much tobacco farming contributes to farmers' household income and what are the driving and inhibiting factors for tobacco farming in Wungurejo Village. Determination of respondents was done by purposive sampling method amounted to 38 tobacco farmers. The research phase starts from the pre-field stage, the field work stage, and the data analysis stage. This study uses a descriptive qualitative and quantitative approach. The results showed that in general the total household income of tobacco farmers was 60.53% with a total income of > 5,000,000-7,500,000 per month. Tobacco farming income gave the largest contribution, namely 58.26% of the total household income. This shows that more than half of the household income of farmers in Wungurejo Village comes from tobacco farming. Factor driving farmers in the Wungurejo to run a tobacco farm is suitable climatic conditions, the status of private land ownership, and availability of labor. While the inhibiting factors experienced by farmers such as limited business capital, lack of understanding of farmers about tobacco cultivation, and the government has never held counseling on tobacco cultivation.
ANALISIS USAHA DAN STRATEGI PENGEMBANGAN USAHA KECIL MENENGAH (UKM) GETHUK TAKE, TAWANGMANGU KARANGANYAR
Authors: Khasanah Tisa Nur , Marwanti Sri , Qonita Aulia
Published: July 2022

The research aims to determine the amount of costs, revenues, profits, and business efficiency, determine the conditions of internal factors and external factors, develop alternative development strategies, and determine strategic priorities that are suitable for developing UKM Gethuk Take. The basic method of research is descriptive analytical method. The method of determining the location is purposive. Determination of key informants is done puposive. The analysis method used is (1) analysis of costs, revenues, profits, business efficiency (2) IFE and EFE matrices (3) IE and SWOT matrices (4) QSP matrix. The results showed that the total costs incurred by UKM Gethuk Take in December 2020 IDR 146,528,402.78 with fixed costs IDR 4,127,902.78 and variable costs IDR 142,400,500. Receipts IDR 176,622,00. Profit IDR 30,093,597.22. Business efficiency is 1.26 meaning UKM Gethuk Take is already efficient in running its business. The main internal factors that influence business conditions are that the capital is carried out independently (strengths) and the management of marketing management is less than optimal (weaknesses). The main external factor affecting business conditions is the proximity to tourist attractions (opportunities) and the Covid-19 outbreak has reduced people's purchasing power and limited tourism activities (threats). There are 14 alternative strategies generated from the SWOT matrix. The strategic priority for the development of Gethuk Take is to maximize the use of all digital marketing by taking advantage of developments in information and communication technology.
RESPON PENAWARAN PETANI BAWANG PUTIH DI TENGAH PANDEMI COVID-19
Authors: Zainuddin Ahmad , Setyawati Intan Kartika , Magfiroh Illia Seldon , Rahman Rena Yunita , Septiadi Dudi
Published: July 2022

Garlic is one of the main staples contributing to the biggest inflation in Indonesia because domestic prices tend to increase. On the other hand, imports of Indonesian garlic have an increasing trend even during the Covid-19 pandemic. This will certainly affect the supply of garlic farmers. The purpose of this study was to determine the response of garlic farmers to changes in domestic and import prices during the Covid-19 pandemic. This study was used secondary data in the form of annual time series data with a period of 30 series, from 1990 to 2020. In this study, an attempt has been made to examine the supply response of garlic farmers in Indonesia by using Error Correction Model (ECM). The results showed that the Covid-19 pandemic caused garlic farmers to be very responsive to domestic prices, but not responsive to import prices. Therefore, high prices are also an incentive for farmers to increase their income of garlic farmers.
PEMETAAN POTENSI KOMODITAS PANGAN DI PULAU JAWA
Authors: Achsa Andhatu , Destiningsih Rian , Verawati Dian Marlina , Hutajulu Dinar Melani
Published: July 2022

The focus of this research is mapping the pattern and structure of provincial economic growth in Java with the Klassen typology approach, the potential of provincial food commodities in Java with the Static location quotient (SLQ)- Dynamic location quotient (DLQ) approach, and identifying the level of accessibility of provinces in Java with the Connectivity quotient CQ approach. Food commodities in this case include rice, corn, soybeans, peanuts, green beans, cassava, sweet potatoes. The results show that (1) DKI Jakarta occupies the position of quadrant I; (2) potential rice , corn and mung bean commodity in Central Java Province, , soybean commodity in East Java Province, peanut commodity in DIY, cassava commodity in West Java Province, as well as potential sweet potato commodities in the Provinces of Central Java and East Java; (3) furthermore, the high level of accessibility in four provinces in Java Island and the rest, namely Banten and East Java Provinces are classified as low accessibility levels.
HUBUNGAN KARAKTERISTIK PETANI TERHADAP KEBERHASILAN USAHATANI JAGUNG
Authors: Arita Bambang , Managanta Andri Amaliel , Mowidu Ita
Published: July 2022

Corn is an important food commodity after rice. Corn is used as food, animal feed, and industrial raw materials. The increase in harvested area is due to the increase in demand for corn from year to year. This study aims to determine the relationship between farmer characteristics and the success of corn farming and how much income is corn farmers in Dataran Bugi Village Tojo District Tojo Una-Una Regency. This study uses a survey method with descriptive correlational analysis. The results showed that land area and social capital are important factors in increasing the production and income of corn farmers in Dataran Bugi Village Tojo District Tojo Una-Una Regency. The average cost incurred by corn farmers is IDR 3,905,567/growing season and the average farmer income is IDR 14,912,433/growing season. Corn farming in Dataran Bugi Village is feasible with an R/C Ratio of 4.82
ANALISIS KETAHANAN PANGAN RUMAH TANGGA PETANI PADA MASA PANDEMI COVID-19 MELALUI BERUSAHATANI DARI RUMAH (FARM FROM HOME)
Authors: Ningsih Kustiawati , Sustiyana Sustiyana
Published: July 2022

To meet the family's food needs during the Covid-19 pandemic, the farmer households of Blumbungan Village do farming from home, one way is to use their yard by cultivating vegetables. Vegetable cultivation in the yard has a strategic role to increase the diversity of food consumption patterns and increase the nutrition of farmer households, and is expected to be able to meet the needs of vegetables at the household level while at the same time assessing the high aesthetic value. The purpose of this study was to examine in depth the analysis of the food security of farmer households during the Covid-19 pandemic through farming from home (farm from home). The research method uses descriptive analytical method, by determining the sample by quota, namely the number of 30 farmer households in Blumbungan Village, Larangan District, Pamekasan Regency. Data analysis was carried out descriptively and equation analysis of Food Expenditure Proportion (PPP), Energy Consumption Level (TKE), and quadrant analysis. The results showed that the household food expenditure of farmers was greater than the non-food expenditure. The degree of food security of farmhouses based on the proportion of expenditure and the level of energy consumption is in the category of food insecurity at 43.33%, food shortages at 50% and food insecurity at 6.67%. So it can be concluded that farming from home through corn farming, use of yard land and livestock has a role in the degree of food security of farmers' households.
Identifying Anomalies in Seismic Velocity and Scattering Property Changes at Active Volcanoes Based on Seismic Interferometry and the Local Outlier Probability Method
Authors: Hirose Takashi ,   National Research Institute for Earth Science and Disaster Resilience (NIED)  3-1 Tennodai, Tsukuba, Ibaraki 305-0006, Japan, Ueda Hideki , Fujita Eisuke
Published: July 2022

The identification of anomalies in seismic wave interferometry data is important in the prediction of imminent volcanic eruptions. Herein, we propose using the local outlier probability (LoOP) method to evaluate the degree of anomaly in seismic wave velocities and scattering properties, estimated via seismic wave interferometry. LoOP is the likelihood that an observation is anomalous and is always in the range of 0–1 (0–100%). We quantitatively evaluated the degree of anomaly in seismic wave velocities and scattering properties before and after the eruption of Mt. Aso, Japan, in October 2016 and Mt. Shinmoedake, which lies within the Mt. Kirishima cluster of volcanoes, Japan, in 2017 and 2018. We found that LoOP exceeded 70% 2 to 3 days before Mt. Aso erupted on October 8, 2016, and it exceeded 70% 1 to 5 days before Mt. Shinmoedake erupted on October 11, 2017 and March 6, 2018. Adjusting the reference and quiet periods for the estimation of changes in seismic velocity/scattering property and LoOP calculations can allow the tracking of repeated, significant LoOP increases during times of high volcanic activity. The quantitative evaluation of temporal anomalies in seismic datasets will improve the precision of predictions of imminent volcanic eruptions.
Construction and Provision of Digital Photographic Archives by Using the Japan Volcanological Data Network System: Application to the 1990–1995 Mount Unzen Eruption Disaster
Authors: Kohno Yuhki ,   National Research Institute for Earth Science and Disaster Resilience (NIED) 3-1 Tennodai, Tsukuba, Ibaraki 305-0006, Japan, Ueda Hideki , Nakada Setsuya
Published: July 2022

Sharing volcano-related photographic data is necessary for deepening understanding of volcanic phenomena. Therefore, a new function for archiving, displaying, and providing digital photographic data has been added to the Japan Volcanological Data Network (JVDN) system to enable users to share photographs of volcanoes and their related metadata. The new function was developed in order to facilitate widespread use in research involving data owned by individuals or organizations, and it solved a number of issues: the issue of preventing the loss of photographs or their associated metadata, issues related to copyright ownership of photographs, information-management issues related to photographic data, and the issue of the extent of disclosure of photographic data. We have uploaded photographic data related to the eruption disaster of Mount Unzen (1990–1995) onto the JVDN system and have started to provide these data to interested parties. These photographic data are related to various aspects including volcanic-eruption phenomena, volcanic disasters, and disaster countermeasures. We expect that such data will be effectively utilized in various fields in the future. We believe that sharing of photographic data by means of the new functions will contribute toward the development of volcanology and the mitigation of volcanic disasters.
A Simple Method for the Analysis of Fumarolic Gases Using Response-Adjusted Sensors with a UAV
Authors: Matsu’ura Kouki , Terada Akihiko , Mori Toshiya , Ono Takato ,   Volcanic Fluid Research Center, School of Science, Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan,   Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo, Japan
Published: July 2022

Recent developments in unmanned aerial vehicle (UAV) technology have made it possible to measure gas compositions in volcanic plumes using lightweight compact gas sensors. However, the differences in the responses of each gas sensor can be critical in estimating gas compositions based on regression scatter plots, particularly for small plumes emitted during volcanic unrest and non-eruption periods. Based on the laboratory experiments, we show that air blowers easily adjust sensor responses and improve correlation on regression scatter plots, allowing quick composition estimates without the use of mathematical applications. Applying our measurement system, lightweight compact gas sensors for H2S, SO2, CO2, and H2O, with air blowers suspended from a UAV, were used to determine the compositions of a small plume at Io-yama, Kirishima volcano, Japan. The compositions of the plume estimated by our system were reasonably consistent with those obtained by laboratory analysis of volcanic gas collected at ground level near the vent, with fluctuations in CO2 ratios and lower H2O ratios, relative to other gases, being observed. For more accurate estimations of CO2 and H2O concentrations, low humidity conditions at a distance from the fumarole are preferable for analysis of plumes diluted by ambient dry air. Our measurement system is simple, easy to set up, and useful for estimating the compositions of small passive fumarolic gas plumes during volcanic unrest and non-eruption periods, without mathematical applications.
Magnetization Structure and its Temporal Change of Miyakejima Volcano, Japan, Revealed by Uncrewed Aerial Vehicle Aeromagnetic Survey
Authors: Koyama Takao , Kaneko Takayuki , Ohminato Takao , Watanabe Atsushi , Honda Yoshiaki , Akiyama Takahiro , Tanaka Shinichi , Gresse Marceau , Uyeshima Makoto , Morita Yuichi ,   Earthquake Research Institute, The University of Tokyo 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan,   Center for Environmental Remote Sensing, Chiba University, Chiba, Japan,   National Research Institute for Earth Science and Disaster Resilience (NIED), Tsukuba, Japan
Published: July 2022

Miyakejima volcano experienced its latest eruption in 2000 with the summit subsidence, and the next event is expected in the near future. An aeromagnetic survey in Miyakejima was conducted in March 2021 in order to investigate the current state of its magnetization structure to identify the potential for another eruption and, thus, mitigate volcanic disaster. The survey flight was conducted using an uncrewed aerial vehicle (UAV), a multirotor drone, to deploy a scalar magnetometer. After processing geomagnetic field data from this survey, in combination with data from previous surveys conducted by using another UAV, an uncrewed helicopter, the average magnetization intensity was determined to be 12.4 A/m. Further, the surrounding area of the crater was relatively highly magnetized; however, the crater rim had a low magnetization intensity. Temporal variation was detected between 2014 and 2021 and dominated the central part of the observation area. Decreased magnetization intensity was identified beneath the caldera, which may become recently demagnetized due to heat supply traveling through fractures in the impermeable layer from the deep heat reservoir.
A Half-Year Long Observation at Sakurajima Volcano, Japan Using a Multi-Channeled Seismometer System with Phase-Shifted Optical Interferometry
Authors: Nakamichi Haruhisa , Hirayama Yoshiharu , Ikeda Toshiharu , Ando Hiroshi , Takeuchi Keiji ,   Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kyoto University 1722-19 Sakurajima-Yokoyama-cho, Kagoshima, Kagoshima 891-1419, Japan,   Hakusan Corporation, Fuchu, Japan
Published: July 2022

The performance of a multi-channel seismometer system with phase-shifted optical interferometry was improved by newly introduced sensors and a processing unit. The current version of the system consists of three optical wired seismometers and the unit. We deployed the system at Sakurajima Volcano and successfully operated it from June to December 2019. As the Sakurajima Volcano frequently erupts, a number of eruption events were observed during the observation period, as were a number of lightning strikes. In this study, we evaluated the observation performance of the volcanic earthquake and the noise caused by the lightning, using the spectrum and amplitude of the waveform. The results show that this sensor can observe earthquakes caused by eruptions as well as ordinary seismometers do. When the lightning struck, pulsed noise with power in a wide frequency band was observed in the existing seismometer, but not in the new sensor. Therefore, the observation was not affected by lightning. In addition, this system was found to be effective in the array analysis of volcanic earthquakes.
Introduction to Automated Tools for the Analysis of Volcanic Ejecta Built on an Analysis Platform Developed in the INeVRH Project
Authors: Yasuda Atsushi ,   Earthquake Research Institute, The University of Tokyo 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan, Hokanishi Natsumi
Published: July 2022

Volcanic activity is diverse. Therefore, a lot of volcanic ejecta need to be analyzed to properly assess the condition of a volcano. However, until now, rapid analysis in this regard has been insufficient. To accurately evaluate both the transition and the characteristics of eruptions, we constructed a platform to efficiently analyze volcanic ejecta incorporating a number of automatic processing functions into a data processing system composed of an electron beam microprobe analyzer (EPMA) and personal computers. A number of time-consuming tasks, such as crystal size distribution analysis and ash particle classification, were automated. Further, the analysis platform is equipped with a database function for collecting various analytical data as the basis for the future development of volcanology. Various quantitative values related to the composition and microtexture of the volcanic ejecta were collected and entered into the database. This paper introduces an outline of the system, collected data, and usage examples.
Geologic and Petrologic Characteristics of the Lahar Deposits at the Western Foot of Zao Volcano
Authors: Ban Masao , Kawashima Konosuke , Tsunematsu Kae , Imura Takumi , Kataoka Kyoko S. , Yamanoi Tohru ,   Faculty of Science, Yamagata University 1-4-12 Kojirakawa-machi, Yamagata, Yamagata 990-8560, Japan,   Graduate School of Science and Technology, Yamagata University, Yamagata, Japan,   Research Institute for Natural Hazards and Disaster Recovery, Niigata University, Niigata, Japan
Published: July 2022

The lahars are one of the most hazardous volcanic phenomena causing the third greatest causalities among the volcanic hazards since the 16th century worldwide. Lahars can flow down a long distance and cause tremendous disaster at the foot of volcanoes often beyond the areas of primary volcanic impacts of pyroclastic fall and pyroclastic density currents. Therefore, the research on lahar history of active volcanoes approaching from an analysis of a geological record in distal volcanic regions is significant for lahar hazard risk evaluation. Zao volcano has high risks of future eruptions, because volcanic tremors have been detected since 2013. The presence of a crater lake at the summit area, and steep slopes at the high altitude of Zao indicates high potential energy for future lahars, if triggered by an eruption starting underneath the crater lake. This study firstly reports the existence of lahar deposits at the western foot of Zao and discusses the depositional features and the origin of these as well as the lahar hazard risk at this volcano. The lahar deposits were exposed during the archaeological excavation of the Fujiki ruin, western foot of the Zao volcano. Two major lahar units, L1 and L2, were recognized. Based on the 14C dating and stratigraphic relationships, the ages of units L1 and L2 were estimated to be <ca. 4.0 and ca. 4.6 cal ka, respectively. The lithology, granulometry, and componentry features of the lahar deposits revealed the depositional features and the source materials. The upper part of L1 (L1-1) unit and lower part of L2 (L2-2) unit were deposited from a hyperconcentrated flow, whereas, the lower part of L1 (L1-2) unit and upper part of L2 (L2-1) unit were formed by a debris flow. The sources of both units were phreatomagmatic eruption products that may have erupted shortly before the lahar events. This implies that these eruptions were the most plausible trigger for the lahars. These results suggest that lahar risk will increase especially after the phreatomagmatic eruptions as well as phreatic eruptions, even in the western foot of this volcano.
Reexamination of Eruptive Activity of Akanfuji in the Me-Akan Volcano, Eastern Hokkaido, Japan
Authors: Sato Eiichi , Wada Keiji , Minami Yusuke , Ishizuka Yoshihiro , Nakagawa Mitsuhiro ,   Hokkaido University of Education 9 Hokumoncho, Asahikawa, Hokkaido 070-8621, Japan,   Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan,   Department of Natural History Sciences, Graduate School of Science, Hokkaido University, Sapporo, Japan
Published: July 2022

Eruption history of Akanfuji in the Me-akan volcano, eastern Hokkaido, has been examined by comparing multiple natural outcrops. In a previous study, at least 17 layers of scoria fall deposits were recognized. To obtain more detailed geological information and reexamine the eruptive activity of Akanfuji, we conducted trench surveys. At each survey site, the scoria fall deposits from Akanfuji are layered with a total thickness of several tens of centimeters to 1 m. A light brown volcanic ash layer is deposited just under the lowest layer of Akanfuji, and the fresh glass in the light brown volcanic ash shows the glass composition of the volcanic ash that erupted at Tarumai volcano 2500 BP. In addition, volcanic ash ejected from Ponmachineshiri of the Me-akan volcano is deposited on top of the newest deposits in the Akanfuji series with a thin soil layer in between. The volcanic ash ejected from Ponmachineshiri contains patches of volcanic ash from the Mashu volcano that erupted 1000 years ago. Therefore, Akanfuji was active from about 2500 to 1000 years ago. Akanfuji ejected scoria fall deposits at least 17 times (Akf-1 to Akf-17), and assuming that it erupted an average number of times during the activity period, it would be once every 90 years. The eruption rate was estimated to be 0.12 km3 DRE/ka.
Numerical Simulations of Dome-Collapse Pyroclastic Density Currents Using faSavageHutterFOAM: Application to the 3 June 1991 Eruption of Unzen Volcano, Japan
Authors: Shimizu Hiroyuki A. ,   National Research Institute for Earth Science and Disaster Resilience 3-1 Tennodai, Tsukuba, Ibaraki 305-0006, Japan
Published: July 2022

Pyroclastic density currents (PDCs) are one of the most dangerous but least understood phenomena of volcanic eruptions. An open-source numerical depth-averaged model of dense granular currents controlled by physical processes such as energy dissipation, basal deposition, and erosion (faSavageHutterFOAM) was applied to investigate the basal concentrated region of a dome-collapse PDC generated on June 3, 1991 at Unzen volcano (Japan) to assess the effects of the physical processes (and their interplay) on the flow dynamics and run-out area of the PDC. Numerical simulations show that energy dissipation process decreases the flow velocity and increases the basal deposition rate, which reduces the run-out distance. The simulations also reveal that erosion process during flow propagation decreases the flow velocity and increases the run-out distance. The numerical results are sensitive to the parameters of energy dissipation (dry friction coefficient μ and collisional or turbulent friction coefficient χ) and erosion (specific erosion energy eb). The results are fitted to field data for run-out distance and flow velocity when μ is between 0.01 and 0.1 with χ∼103 m-1 s-2 (or when χ is between 104 and 105 m-1 s-2 with μ∼0.2) and eb∼102 m2 s-2. The estimated value of eb suggests that re-entrainment of deposit mass played an important role in controlling the flow dynamics and run-out area of the PDC. The estimated values of μ and χ are correlated, but the estimation of these parameters might be improved by further constraints from field data. The presented results serve as a basis to make further quantitative estimations of the model parameters (μ, χ, and eb) for applying the faSavageHutterFOAM model to hazard assessments of PDCs.
Continuously Operable Simulator and Forecasting the Deposition of Volcanic Ash from Prolonged Eruptions at Sakurajima Volcano, Japan
Authors: Iguchi Masato , Nakamichi Haruhisa , Takishita Kosei , Poulidis Alexandros P. ,   Disaster Prevention Research Institute, Kyoto University 1722-19 Sakurajima-Yokoyama-cho, Kagoshima, Kagoshima 891-1419, Japan,   Division of Earth and Planetary Sciences, Graduate School of Science, Kyoto University, Kyoto, Japan,   Institute of Environmental Physics, University of Bremen, Bremen, Germany
Published: July 2022

At Sakurajima volcano, frequent Vulcanian eruptions have been seen at the summit crater of Minamidake since 1955. In addition to this eruption style, the eruptive activities of Strombolian type and prolonged ash emission also occur frequently. We studied the design of a simulator of advection-diffusion-fallout of volcanic ash emitted continuously. The time function of volcanic ash eruption rate is given by a linear combination of the volcanic tremor amplitude and the volume change of the pressure source obtained from the ground motion. The simulation is repeated using discretized values of the eruption rate time function at an iteration time interval of the simulation. The integrated value of the volcanic ash deposition on the ground obtained from each individual simulation is used to estimate the value of the ash fallout. The plume height is given by an empirical equation proportional to a quarter of the power of the eruption rate. Since the wind velocity field near the volcano is complicated by the influence of the volcanic topography, the predicted values published by meteorological organizations are made in high resolution by Weather Research and Forecasting (WRF) for the simulation. We confirmed that an individual simulation can be completed within a few minutes of iteration interval time, using the PUFF model as the Lagrangian method and FALL3D-8.0 as the Eulerian method on a general-purpose PC. Except during rainfall, the radar reflectivity, the count of particles per particle size, and fall velocity obtained by the disdrometers can be used for the quasi-real time matching of the plume height calculated from the eruption rate and the ash fall deposition rate obtained from the simulation.
A Consideration on Volcanic Ash Ingress into the Horizontal Air Intake of Air Conditioning
Authors: Otsuka Kiyotoshi , Nobata Arihide , Suwa Hitoshi , Kubo Tomohiro , Miyagi Yousuke , Miyamura Masamitsu ,   Technology Research Institute, Obayashi Corporation 4-640 Shimo-kiyoto, Kiyose, Tokyo 204-8558, Japan,   Mount Fuji Research Institute, Yamanashi Prefectural Government, Fujiyoshida, Japan,   National Research Institute for Earth Science and Disaster Resilience (NIED), Tsukuba, Japan
Published: July 2022

A preliminary consideration is conducted on the amount of vertically falling volcanic ash sucked into the horizontal air intakes of the exterior device for air conditioning (AC) using a numerical calculation code consisting of transport equations of airborne ash concentration, equations of motion of ash particles, and a simplified airflow model. This study focuses on the effect of the inertia force acting on the ash particle on the process of ash ingress into the horizontal air intake of AC. The results with the ash particle of sphericity 0.8 indicate that the inertia force reduces the amount of the ash ingress into the air intake by 22, 31, and 51% for the diameters of 67.5, 125, and 250 μm, respectively, as compared to the case neglecting the inertia force. The ashfall depths (thickness of deposited ash) derived as the ones leading to reduction of the performances of AC from our previous laboratory experiment on an open-type cooling tower are re-evaluated with the code. The results suggest that the ashfall depth affecting AC performances can be larger by a factor of 1.6 to 2.1, depending on the particle sphericity, than that obtained in the experiment where the inertia force was neglected in the conversion from the ash amount provided to the test piece to the “actual” ashfall depth. Simulations on the effect of installing a hood over the air intake are also made, indicating limited but substantial reduction of the expected ash ingress. The importance of mitigating ashfall impacts is stressed.