bluuebunny/crossref_metadata_2025_split huggingface dataset:
Identifikasi Bulir Superparamagnetik sebagai Prekursor Longsor di Daerah Bukit Lantiak Kecamatan Padang Selatan Kota Padang
Authors: Effendi Sundari Fatma , Budiman Arif 
Published: November 2019

Telah dilakukan penelitian mengenai identifikasi bulir super paramagnetik sebagai prekursor longsor di Bukit Lantiak Kecamatan Padang Selatan Kota Padang. Sampel diambil pada empat lintasan, dengan setiap lintasan terdapat sepuluh titik pengambilan sampel. Pengukuran nilai suseptibilitas magnetik menggunakan Bartington Magnetic Suseptibility MeterÂ yang diukur pada dua frekuensi, yaitu low frequency 0,465 kHz (Ï‡LF) dan high frequency 4,65kHz (Ï‡HF). Hasil pengukuran nilai suseptibilitas volum yang didapat dari sampel merupakan mineral Ferrimagnetik, dan nilai suseptibilitas massa yang didapat sampel mengandung mineral Hematit (Fe2O3). Dari analisis hubungan antara ketinggian dan suseptibilitas magnetik sampel, diduga dua lintasan mengalami erosi. Hal ini dikarenakan nilai suseptibilitas magnetik bertambah dengan berkurangnya dengan ketinggian. Berdasarkan keberadaan bulir superparamagnetik, Lintasan C dan D memiliki butiran lebih banyak dibandingkan sampel lokasi A dan B. Tanah yang memiliki butiran halus lebih mudah menyerap air karena memiliki luas permukaan yang lebih besar. Air yang terserap ke dalam tanah akan terakumulasi di atas bidang gelincir, sehingga dapat menyebabkan timbulnya gerak lateral pada tanah atau longsor. Berdasarkan hal tersebut Lintasan C dan D lebih besar kemungkinan terjadinya bencana longsor dibandingkan dengan Lintasan A dan B.Kata kunci: Bulir Superparamagnetik, Prekursor, Longsor, Suseptibilitas magnetik, Bukit Lantiak
Rancang Bangun Sistem Deteksi dan Informasi Lokasi Banjir Berbasis GSM
Authors: Efendi Lilian , Wildian Wildian 
Published: November 2019

Alat pendeteksi banjir nirkabel berbasis GSM telah dirancang dengan menggunakan sensor ultrasonik HC-SR04.Â Alat ini bekerja berdasarkan tinggi permukaan air yang tergenang di jalan raya. Alat terdiri dari sensor ultrasonik yang diletakkan pada ketinggian 150 cm pada tiang jalan raya. Pada saatketinggian air mencapai 40 cm, maka Arduino uno sebagai pengolah data dengan menggunakan bahasa C akan mengontrol program SIM800L untuk mengirim SMS sebanyak satu kali dengan rata-rata waktu pengiriman selama 12:06 s sampai ke nomor yang telah di daftarkan. Setelah SIM800L mengirim SMS Â yang berisi link lokasi banjir, SIM800L akan memberikan peringatan bahwasanya ada SMS masuk dengan cara me-misscall nomor yang telah didaftarkan sebanyak dua kali. Link tersebut dapat diakses dan kemudian dapat dilihat dimana lokasi banjir terjadi.Kata kunci : GSM, sensor Ultrasonik HC-SR04, Arduino Uno, Bahasa C, SMS, link, misscall
Morfologi Dan Sifat Optik Lapisan Tipis Opal yang Dideposisi Menggunakan Metode Modified Vertical Deposition
Authors: Rahayu Sri , Muldarisnur Mulda 
Published: November 2019

Telah dilakukan pembuatan lapisan tipis opal dengan menggunakan metode modified vertical deposition. Pada penelitian ini dilakukan analisis pengaruh kecepatan penarikan substrat dari suspensi koloid polysterene terhadap sifat optik dan homogenitas ketebalan lapisan tipis opal. Pembuatan sampel dilakukan dengan kecepatan penarikan 1 mm/jam, 5 mm/jam, 10 mm/jam dan 12 mm/jam. Sampel dikarakterisasi menggunakan mikroskop optik, spektrofotometer UV-Vis dan SEM (Scanning Electron Microscopy). Mikroskop Optik menunjukkan ketebalan lapisan opal yang tidak homogen. Karakterisasi UV-Vis menunjukkan adanya puncak absorbansi pada lapisan opal pada kecepatan 1 mm/jam sedangkan SEM menunjukkan adanya lapisan opal yang multilayer (berlapis banyak) pada kecepatan penarikan 1 mm/jam.Â Kata kunci: Lapisan tipis opal, Mikroskop Optik, SEM, UV-Vis, variasi kecepatan.
Efek Variasi Komposisi dan Waktu Milling terhadap Sifat Fisis dan Kuat Tekan Keramik Clay
Authors: Mahdalena Afifah Alif , Mora Mora 
Published: November 2019

Telah dilakukan penelitian mengenai efek variasi komposisi dan waktu milling terhadap sifat fisis dan kuat tekan keramik clay. Clay dimilling menggunakan ball mill dengan variasi waktu 5 dan 10 jam. Sampel dibuat dengan perbandingan massa clay yang tidak dimilling dengan clay yang dimilling adalah 100%:0%, 90%:10%, 80%:20%, 70%:30%, 60%:40%, 0%:100%. Susut bakar keramik clay minimum adalah 17,3% yang terdapat pada komposisi campuran massa 60%:40 % yang dimilling selama 5 jam. Nilai densitas keramik tertinggi terdapat pada komposisi massa 60%:40% clay yang dimilling 5 jam yaitu 1,853 gr/cm3. Porositas terendah pada komposisi massa 80 %:20% clay yang dimilling 5 jam yaitu 25,21 %. Kuat tekan tertinggi pada komposisi massa 60%:40% yang dimilling 5 jam yaitu 584,03 kg/cm2. Hasil XRD menunjukan clay mengandung mineral kaolinit, illite, dan kuarsa. Ukuran kristal clay tidak dimilling yaitu 105,381 nm, setelah dimilling 5 jam menjadi 100,058 nm dan setelah milling 10 jam menjadi 94,335 nm. Hasil SEM menunjukan ukuran partikel clay tidak dimilling adalah 12,083 Î¼m, setelah dimilling 5 jam menjadi 9,005 Î¼m dan setelah dimilling 10 jam menjadi 18,9 Î¼m.Â Kata kunci : keramik clay, clay, milling, susut bakar
Rancang Bangun Sistem Peringatan Dini Banjir Berdasarkan Tingkat Kekeruhan Air Hulu Sungai dengan Turbidity Sensor SEN0189 dan Transceiver nRF24L01+
Authors: Ammari Syafiq , Wildian Wildian , Harmadi Harmadi 
Published: November 2019

Telah dilakukan rancang bangun sistem peringatan dini banjir berdasarkan tingkat kekeruhan air hulu sungai dengan turbidity sensor SEN0189 dan transceiver nRF24L01+.Â Â Alat yang dirancang terbagi menjadi unit transmitter dan unit receiver. Unit transmitter terdiri dari turbidity sensor SEN0189, modul Arduino UNO R3 dan transceiver nRF24L01+. Unit receiver terdiri dari LCD, transceiver nRF24L01+, modul Arduino UNO R3 dan buzzer. Sensor mengindra tingkat kekeruhan air kemudian nilainya ditransmisikan dari transmitter ke receiver oleh transceiver nRF24L01+. Data kekeruhan air diproses oleh mikrokontroler pada modul Arduino UNO R3 untuk ditampilkan pada LCD dan mengaktifkan peringatan melalui buzzer. Jarak maksimum transmisi data sejauh 500 m tanpa penghalang dan 300 m dengan penghalang berupa pepohonan. Hasil pengukuran oleh alat yang dirancang memiliki persentase kesalahan rata-rata sebesar 29,48% dibanding alat standar turbidimeter HACH 2100N. Nilai akurasi tertinggi diperoleh pada tingkat kekeruhan air di atas 390 NTU dengan persentase kesalahan kurang dari 5%. Peringatan dini banjir diaktifkan ketika kekeruhan air di atas 467 NTU berupa nyala buzzer dan tulisan â€œBERPOTENSI BANJIRâ€ pada LCD. Buzzer mati secara otomatis dan LCD menampilkan tulisan â€œNORMALâ€ ketika kekeruhan air kurang dari 467 NTU. Alat yang dirancang mampu menampilkan nilai kekeruhan air secara realtime dan memberi peringatan sesuai dengan tingkat kekeruhan air.Kata kunci: nRF24L01+, peringatan dini, tingkat kekeruhan air, transmisi data, turbidity sensor
PEMODELAN PENENTUAN KREDIT SIMPAN PINJAM MENGGUNAKAN METODE ADDITIVE RATIO ASSESSMENT (ARAS)
Authors: Maulana Charis , Hendrawan Aria , Pinem Agusta Praba Ristadi 
Published: November 2019

<p>Beberapa koperasi dalam memberikan pinjaman ke anggotanya sangat bergantung pada masing-masing pemberi keputusan dan bobot penilaian yang berbeda untuk setiap kriteria. Berbeda dengan pinjaman di bank, pinjaman pada koperasi memiliki kriteria yang mengacu pada aturan tiap koperasi. Hal ini menjadi menarik untuk dilakukan penelitian dengan menerapkan metode Additive Ratio Assessment dalam suatu sistem pendukung keputusan, sehingga dapat membantu dalam menentukan penerima pinjaman koperasi untuk menghindari kredit macet. Sistem Pendukung Keputusan (SPK) adalah sistem yang dapat membantu seseorang, dalam mengambil suatu keputusan yang akurat dan tepat sasaran. Banyak permasalahan yang dapat diselesaikan dengan menggunakan SPK, contohnya membangun model sistem pendukung keputusan penentuan anggota koperasi potensial dalam pengajuan pinjaman untuk menghasilkan informasi anggota koperasi potensial untuk menghindari kredit macet.<strong></strong></p><p><strong> </strong></p>
Utilização de Índices Físicos a partir de Imagens OLI – TIRS para o Mapeamento de Uso e Cobertura da Terra no entorno do Aeroporto Internacional do Recife/Guararapes – Gilberto Freire
Authors: De Souza Oliveira Claudianne Brainer 
Published: November 2019

Atualmente o uso de índices físicos NDVI (Normalized Difference Vegetacion Index), NDBI (Normalized Difference Built-up Index) e NDWI (Normalized Difference Water Index) vêm sendo muito utilizados como suporte para o mapeamento e monitoramento de uso e ocupação da terra. A área de estudo abrange o Aeroporto Internacional do Recife/Guararapes – Gilberto Freyre e o seu entorno, uma região na qual estão inseridos os municípios de Jaboatão dos Guararapes e Recife, ambos no Estado de Pernambuco. Utilizando imagens do satélite LANDSAT-8, sensor OLI de 18-06-2016, orbita-ponto 214-066, aplicou-se a técnica de fusão RGB-IHS para se obter uma melhor resolução espacial, logo após foram calculados os índices físicos, com o objetivo de avaliar o uso e ocupação do solo da área em questão. Como resultado final, obteve-se um mapa de uso e cobertura da terra, contendo quatro classes (solo exposto, água, vegetação e área construída), na escala de 1:50.000, no sistema de referência geodésico WGS84. Physical indexes from OLI - TIRS images as tools for land use and coverage mapping around the airport International Recife / Guararapes - Gilberto Freire A B S T R A C TCurrently the use of NDVI (Normalized Difference Vegetation Index), NDBI (Normalized Difference Built-up Index) and NDWI (Normalized Difference Water Index) have been widely used as support for mapping and monitoring land use and occupation. The study area covers the Recife / Guararapes - Gilberto Freyre International Airport and its surroundings, a region in which the municipalities of Jaboatão dos Guararapes and Recife are located, both in the State of Pernambuco. Using images from the LANDSAT-8 satellite, OLI sensor of 06-06-2016, orbit-point 214-066, the RGB-IHS fusion technique was applied to obtain a better spatial resolution, after the physical indexes were calculated, with the objective of evaluating the land use and occupation of the area in question. As a final result, a land use and land cover map was obtained, containing four classes (exposed soil, water, vegetation and built area), in the 1: 50.000 scale, in the WGS84 geodetic reference system.Keywords: physical indexes, remote sensing, urban area, use and land cover.
Roteiro teórico-metodológico para a pesquisa em Geomorfologia Estrutural
Authors: Moura-Fé Marcelo Martins 
Published: November 2019

Metodologicamente, a pesquisa com ênfase nos aspectos evolutivos do relevo apoia-se em diferentes pressupostos teóricos e metodológicos, fazendo com que não se tenha o estabelecimento de caminho teórico-metodológico pronto, a ser aplicado e seguido. Nesse contexto de indefinição ou imprecisão que, para alguns, pode ser interpretado como um problema, para outros, pode ser visto como um campo fértil de possiblidades e inovações. Neste trabalho, o objetivo principal é o de apresentar uma dessas possibilidades, mais precisamente, um roteiro teórico-metodológico para a pesquisa em geomorfologia estrutural. De maneira geral, esse roteiro tem ênfase na análise morfoestrutural, alicerçada nos princípios morfoestratigráficos e na teoria da etchplanação. Associado, há um contingente metodológico compartimentado em etapas de gabinete, com levantamentos bibliográfico e cartográfico, na realização de levantamentos de campo e na análise integrada de todos os dados na etapa de laboratório. Assim, sob a inspiração teórica de Penck e os postulados modernos da geomorfologia estrutural pode ser desenvolvido o trabalho de compartimentação e análise geomorfológica de qualquer região, etapas fundamentais para a compreensão dos processos evolutivos pretéritos e atuais. Theoretical-methodological guide for the research in structural geomorphology A B S T R A C T Methodologically, the research with emphasis on the evolutionary aspects of relief is based on different theoretical and methodological assumptions, so that the theoretical and methodological path is not established, to be applied and followed. In this context of vagueness or imprecision which, for some, can be interpreted as a problem, for others it can be seen as a fertile field of possibilities and innovations. In this work, the main objective is to present one of these possibilities, more precisely, a theoretical-methodological roadmap for research in structural geomorphology. In general, this script has an emphasis on morphostructural analysis, based on morphostratigraphic principles and the theory of etchplanation. Associated, there is a methodological contingent compartmentalized in cabinet steps, with bibliographical and cartographic surveys, in the field surveys and in the integrated analysis of all the data in the laboratory stage. Thus, under the theoretical inspiration of Penck and the modern postulates of structural geomorphology can be developed the work of compartmentalization and geomorphological analysis of any region, fundamental steps for the understanding of past and present evolutionary processes.Key Words: Morphostructure, Morphosculpture, Morphostratigraphy. Etchplanation, Methodology.
Degradação de áreas com processo de Arenização na Bacia do Córrego Guanabara, município de Reserva do Cabaçal –MT (Degradation of areas with sandstones process in the Guanabara Stream Basin, Municipality Reserva the Cabaçal - MT)
Authors: Nogueira Adivane Morais , Tocantins Nely , Salomão Fernando Ximenes de Tavares 
Published: November 2019

A microbacia do córrego Guanabara, pertencente à Bacia do Alto Paraguai (BAP), abrange uma área de cerca de 28, 19 km2 no município de Reserva do Cabaçal, Mesorregião Sudeste Mato-Grossense, apresentando áreas de exposição superficial de solos arenosos, sem cobertura vegetal, tidas para esse trabalho como areais. O objetivo deste estudo foi caracterizar os areais, destacando as condições de degradação do solo. Neste sentido, foi aplicada uma analise comparativa de duas áreas da bacia em questão, sendo uma submetida ao processo de arenização e outra conservada com bioma Cerrado, por meio de diagnóstico morfológico do perfil de solo e análises físicas e químicas. O processo de formação das áreas arenizadas envolve as características de fragilidade ambiental, a forma de uso e ocupação da terra favorecendo a perda da fertilidade do solo e dificultando a fixação e permanência das espécies vegetais levando a surgência de manchas arenosas exposta a degradação por processos erosivos. A extensão dessas áreas foi estimada em 1,9% da área da bacia no ano de 2005, tendo evoluído para 4, 2% em 2015, chegando a 0,17km2. Sendo a bacia pertencente às cabeceiras do pantanal Mato-Grossence necessita-se de medidas de prevenção e recuperação destas áreas tendo em vista a contenção dos processos de degradação. A B S T R A C TThe Guanabara cachment, (28,19km2) part of the high portion of Paraguai basin (BAP), within Reserva do Cabaçal country, southeast of Mato Grosso state, presents sand soils on surface with no savana covegare, considered as sandization. The goal of the work was to study the sandy areas, highlighting the soil degradation aftereffect. We applied a comparative analysis between conserved and sandizaded areas, by soil profile morphological diagnosis and physico-chemical analysis. The sandization process includes environmental fragility and the land use favoring loss of soil fertility, preventing the fixation of plants and allowing the emergence of sandy areas, which will be easily eroded by hillslope process. We calculated the sandy areas as 1,9% of the cachment on 2005, increasing to 4,2% in 2015, covering 0,17 km2. As the area feeds the wetlands of the Brazilian “pantanal” it is important to apply prevention and recovery actions aiming the reduction of degradation process. Keywords: Sandization, degradation, environmental fragility
Estudo da erosão no Seridó paraibano como indicador do processo de desertificação: Juazeirinho, Paraíba (Study of erosion in Seridó paraibano as an indicator of desertification: Juazeirinho, Paraíba)
Authors: De Oliveira Edinete Maria de Oliveira Maria , Selva Vanice 
Published: November 2019

O estudo da erosão em regiões semiáridas, principalmente quando o solo e a vegetação tornam-se vulneráveis por meio de atividades antrópicas, sem que haja conservação do ambiente explorado, indica que além do processo erosivo natural, o ambiente erodido pode sofrer um processo de desertificação. Diante desse contexto foi possível observar e analisar a erosão, a vulnerabilidade e os riscos na região do Seridó paraibano, especialmente no município de Juazeirinho, por apresentar uma fisiografia de Caatinga, solo arenoso e baixa pluviosidade, além de apresentar econômica e socialmente, explorações de minérios, sobretudo, da rocha caulim. As proposições metodológicas colocadas no trabalho, às coletas feitas in loco e a ferramenta do SIG contribuiu para apontar indicadores de riscos à erosão tanto do processo natural quanto o antropogênico. Os resultados apontaram uma vulnerabilidade natural média e alta para a região estudada, devido às instabilidades pluviométricas e a condições geomorfológicas da área. O processo erosivo pela ação antrópica mostrou um alto e severo risco à erosão, consequentemente deixando o ambiente propicio à desertificação em que se constatou um valor de 217.686,12km², (46,56%) da área do município, praticamente a metade do mesmo, gerando, portanto, uma preocupação grave pelo empobrecimento do solo e da cobertura vegetal nativa. A B S T R A C TThe study of erosion in semiarid regions, especially when the soil and vegetation become vulnerable through anthropogenic activities without environmental conservation explored, indicates that besides the natural erosive process, the eroded environment can suffer a process of desertification. In this context it was possible to observe and analyses the erosion, the vulnerability and risks in the Northeast region of Brazil, especially in the municipality of Juazeirinho by presenting a physiography of Caatinga, sandy soil and low rainfall, as well as present economic and socially, holdings of ores, especially, caulim rock. The methodological propositions placed on the work, the collections made on the spot and the GIS tool contributed to point indicators of risks erosion of both the natural process as anthropogenic. The results showed a natural medium and high vulnerability to the region studied, due to rainfall and geomorphologic conditions instability of the area. The erosive process by anthropic action showed a high and severe erosion risk, consequently leaving the environment propitious to desertification in which if found in a value of 217,686.12 Km ², (46.56%) the area of the city, practically half of the same, generating thus a serious concern by the impoverishment of soil and vegetation cover.Keywords: Erosion, vulnerability, Risks, Process of desertification, Mapping.
Partnership Between Government And Private Vocational School In Public Services (Study At The Village Fishermen Filling Station Sumber Jaya Sub-District Of Kampung Melayu City Of Bengkulu)
Authors: Patrisia Novliza Eka , Adriadi Rekho 
Published: November 2019

Partnerships between Government and the Private Sector in Public Services. Quality of public services will result in a positive response from the public so it needs a specific strategy in its implementation, one of which is by using Public Private Partnership (PPP). This study aims to describe and analyze the partnership that exists between the government and the private sector, describe and analyze the public response to the quality of service as well as explain the enabling and inhibiting factors in the implementation of public service in Fuel Filling Station of Fishermen (SPBN) Kampung Bahari, of Bengkulu city. The method used in this study used a qualitative approach. Quality of public services in SPBN Kampung Bahari get an appraisal "Good" of users but in terms of access and tangible gain diverse assessment due to locations that are not easily accessible by all users and the number of facilities SPBN that were in poor condition.
Building Independent Villages through Collaborative Governance by Village-Owned Enterprises (Best Practice from Panggungharjo Village, Central Java, Indonesia)
Authors: Astuti Sri Juni Woro , Suaedi Falih 
Published: November 2019

This study aims to develop a collaborative governance model applied by village-owned enterprises called "BUMDes" which has become one of the keys to the success of the village government in improving the economy and welfare of rural communities becoming an independent village. The research method used is descriptive qualitative method with a case study approach that is by taking the setting and research focus on the success of BUMDes in the village of Panggungharjo, Bantul Regency, Central Java Province. Primary data collection was carried out through in-depth interviews with several key informants and supporting informants, which were determined by snowball sampling. The main informants consisted of: the village head, the head of the village deliberation body, and the village secretary who then rolled out to several supporting informants consisting of the BUMDes officials, community leaders, and the private sector who collaborated with the Panggungharjo BUMDes. In addition, secondary data needed is obtained through documentary studies. This research will produce a collaborative governance model that is expected to be used as a reference for the management
Students’ Perceptions on the Application of Standardized English Language Proficiency Test as Graduation Requirement in Tourism Higher Education in Indonesia (A Case Study at Trisakti School of Tourism)
Authors: Rahayu Nurti 
Published: November 2019

The growing importance of English competence in various industries is one of the pull factors of the increasing need of English Language Proficiency (ELP) for university graduates. One of the ways to motivate students’ English competence is to set English language proficiency as graduation benchmark. This study aims to describe students’ perspectives on such policy and how it affects the students’ learning. A descriptive qualitative research is employed. A questionnaire is used to gain the primary data. The research participants are students of Trisakti School of tourism who has experienced such policy. The questionnaires comprise of two parts: demographic data and questions of students’ perceptions on various aspects on the usage of English language proficiency tests. Students’ perception on various campus program to improve English competence is also asked. The results reveal that students are familiar with the international standardized tests such as TOEIC, TOEFL and IELTS and they do make various preparation for the tests. As much as 60% of the respondents agree with the campus policy to set TOEIC and TOEFL score for graduation requirements. As for students’ perception on campus program, the results reveal that awarding scholarship for the top achiever students and live in program in English speaking program are considered to be the most effective program. The least effective programs are class grouping based on test score. The results can be of a valuable source for policy makers in the institution to develop a more effective program ti improve the students’ English competence.