1,720,958 research outputs found
APLIKASI METODE GAYA BERAT UNTUK INVESTIGASI STRUKTUR BAWAH PERMUKAAN LAPANGAN PANAS BUMI IE JU, ACEH BESAR
Full text linkA Comparison of Geologic Structure Detection of Sumatera Island Using Goce Satellite Gravity Data and Sgg-Ugm-2 Data
Full text linkGOCE gravity satellite data can be used for regional fault detection because the observation area is wide and not limited by area. In this study, GOCE satellite data is used to detect geological structures on the island of Sumatra, the results of which are used as the basis for disaster mitigation. GOCE data and SGG-UGM-2 were processed using the GOCE User Toolbox (GUT) software to produce a gravity disturbance map and a complete bouguer anomaly map. The GOCE obtained results were validated using the SGG-UGM-2 high-resolution gravity model data. The calculation results obtained that the gravity disturbance value from the GOCE data was around -140 to 200 mGal, while the value of the gravity disturbance from the SGG-UGM-2 data was around -180-300 mGal. The GOCE gravity disturbance map and the SGG-UGM-2 can detect the Subduction Trench, Mentawai Fault, and West Andaman Fault on Sumatra Island with negative values, while the Sumatran Fault Zone (SFZ) along Sumatra Island with positive values in line with the presence of mountain ranges. The results of the SGG-UGM-2 data processing for the gravity disturbance are more detailed than GOCE because the SGG-UGM-2 data degree is higher than that of GOCE. GOCE complete bouguer anomaly value is around 40-560 mGal, while the value of complete bouguer anomaly SGG-UGM-2 is around 60-560 mGal. The complete bouguer anomaly maps from GOCE and SGG-UGM-2 can detect patterns from the Subduction Trench, Mentawai Fault, and West Andaman Fault but cannot clearly detect SFZ. The complete bouguer anomaly can also detect differences between oceanic and continental crust. The GOCE and the SGG-UGM-2 complete bouguer anomaly map show almost similar patterns and the ability to detect geological structures for sub and regional Sumatra Island. In addition, GOCE data detect geological structures more clearly than GRACE data
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Socio-Economic Vulnerability of Coastal Communities in Geospatial Aspects Toward Tanjung Carat Port Establishment (Case Study of Sungsang Village, Banyuasin II)
Full text linkThe establishment of an international port at Tanjung Carat is part of the National Strategic Projects initiated by the South Sumatra Provincial Government to boost local economic growth. However, the development of the port will involve converting a 60-hectare mangrove forest and imposing restrictions on fishing areas near the port. This will have a negative impact on the socio-economic conditions of the coastal communities in Sungsang Villages, as they heavily depend on marine catches. Therefore, it is essential to analyze and map the socio-economic vulnerabilities of the village community in order to minimize and prevent adverse impacts. This study aims to investigate the level of socio-economic vulnerability of the coastal community to the development of Tanjung Carat port and to provide policy directives as mitigation strategies. The research utilized the ArcGIS Software to weight selected social and economic indicators and convert them into raster data. The Spatial Multi-Criteria Evaluation (SMCE) method was applied to produce social, economic, and socio-economic vulnerability maps, and policy directives were formulated using descriptive analysis. The results revealed that the total socio-economic vulnerability in the four villages falls into the highly vulnerable category, mainly due to the predominant profession as traditional fishermen with relatively low income and education. Formulating policy directives based on applicable regulations in various aspects could be an initial effort to reduce the socio-economic vulnerability. Furthermore, applicable programs are needed to help restore the economy of the impacted fishermen
LAND SURFACE TEMPERATURE DI KABUPATEN OGAN KOMERING ILIR SUMATERA SELATAN AKIBAT KEBAKARAN LAHAN
Full text linkABSTRACT
Land fires are one of the disasters that often occur in South Sumatra Province, especially in Ogan Komering Ilir Regency. During the dry season, the potential for hotspots and land fires is very high. Fire will cause the land temperature to change and heat up; this heating can be directly proportional to the size of the fire that occurs. Monitoring land surface temperature (LST) is necessary to find out information on land temperature values when fires occur in September 2023 in Ogan Komering Ilir Regency. Landsat 9 Remote Sensing data is processed using the raster data analysis method with the TOAA, Brightness, NDVI, PV, emissions processes, and finally the LST process to sharpen the hot spot data analysis that is also used in this research. The research results show that the highest distribution of high hot spots is in Pampangan District, with 88 spots, and Pedamaran, with 5 spots, while the least is in Jejawi District, with 0 high hot spots out of a total of 1,333 hotspots in nine sub-districts. The ground surface temperature in the study area was the lowest 17.6°C and the highest temperature 61.7°C. On September 29, 2023, the area worst affected by land fires based on hotspots and ground surface temperature was Pedamaran District with an area of 7941.68 ha, followed by Pampangan District with 6165.66 ha, and the lowest was Sirah Pulau Padang District with 496.27 ha.
Keywords :Landfire, Remote Sensing, Land Surface Temperature
ABSTRAK
Kebakaran lahan salah satu bencana yang sering terjadi di Provinsi Sumatera Selatan terutama di Kabupaten Ogan Komering Ilir, saat musim kemarau potensi adanya titik api dan kebakaran lahan sangat tinggi. Kebakaran akan membuat temperature lahan berubah dan memanas, pemanasan tersebut dapat berbanding lurus dengan besarnya kebakaran yang terjadi. Pemantauan land surface temperature (LST) perlu dilakukan untuk mengetahui informasi nilai temperature lahan pada saat kebakaran yang terjadi di bulan September tahun 2023 di Kab. OKI. Data penginderaan jauh Landsat 9 diolah dengan metode analisis data raster dengan proses TOAA, Brigness, NDVI, PV, Emisi dan terakhir proses LST, untuk mempertajam analisa data titik panas juga digunakan dalam penelitian ini. Hasil penelitian memperlihatkan bahwa sebaran titik panas tinggi paling banyak ada di Kecamatan Pampangan 88 titik dan Pedamaran 5 titik sedangkan paling sedikit ada di Kecamatan Jejawi 0 titik panas tinggi dari total keseluruhan titik panas disembilan kecamatan sebanyak 1.333 titik. Temperature permukaan tanah pada area kajian terendah 17.6°C dan temperatur tertinggi 61.7°C. Pada tanggal 29 September 2023 daerah paling parah terkena dampak kebakaran lahan berdasarkan titik api dan temperatur permukaan tanah adalah wilayah Kecamatan Pedamaran dengan luasan 7941,68 Ha disusul oleh Kecamatan Pampangan 6165,66 Ha dan terendah adalah Kecamatan Sirah Pulau Padang 496,27 Ha.
Keywords : Kebakaran Lahan, Penginderaan Jauh, Land Surface Temperatur
- …
