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Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
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ISSN : 19075995     EISSN : -     DOI : -
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Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 905 Documents
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PENGARUH NUMBER OF NEIGHBORS TERHADAP PERHITUNGAN ORDINARY KRIGING DAN COKRIGING calvin maharza
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Penelitian ini bertujuan untuk membandingkan akurasi perhitungan dengan metode kriging dan cokriging serta pengaruh number of neighbors terhadap perhitungan. Metode penelitian meliputi analisis assay sebanyak 24 buah. Pemilihan model menghasilkan spherical dengan arah orientasi anisotropic. Hasil penelitian untuk cross validation pada metode kriging dengan number of neighbour paling baik menghasilkan nilai 0,772 dan berturut-turut nilai SE, R2, Y-intercept dan SE prediction adalah 0,338; 0,191; 0,85; dan 1,196. Sedangkan hasil penelitian untuk cross validation pada metode cokriging dengan number of neighbour paling baik menghasilkan nilai 1,279 dan berturut-turut nilai SE, R2, Y-intercept dan SE prediction adalah 0,070; 0,938; -1,01 dan 0,330. Berdasarkan parameter tersebut disimpulkan bahwa pengaruh number of neighbour terhadap perhitungan bernilai positif sesuai dengan jarak pengaruh dari suatu sampel dan perhitungan dengan menggunakan metode cokriging memiliki akurasi yang lebih baik dibandingkan dengan metode ordinary kriging.
PERBANDINGAN GEOSTATISTIK METODE KRIGING DAN CO-KRIGING MENGGUNAKAN ESTIMASI POINT KRIGING Arief Pambudi Nugraha
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

This study aims to determine a variogram model with kriging and co-kriging with point kriging and point co-kriging estimation based on linear, exponential, spherical, gaussian variogram models and in isotropic and anisotropic orientations. The research method includes assay analysis of 132 data with the primary variable (Ur) having 24 data and the secondary variable (C) having 126 data. Data processing was done by looking for a model for each method in isotropic and anisotropic orientations. The determination of the model used cross validation by looking at the regression parameters R2, SE, and SE prediction. The results obtained are the kriging method, the best model is the spherical and the co-kriging method is the exponential model. From the comparison of the two methods, the isotropic orientation is better than anisotropic in terms of error and the results of the co-kriging method have a better estimate than kriging.
Tinjauan Literatur: Evaluasi dan Keandalan Klasifikasi Massa Batuan Menggunakan Uji Beban Titik Astika Putri Roshinta; Singgih Saptono; S. Koesnaryo; Tedy Agung Cahyadi; Eddy Winarno
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Rock mass classification is used as an important parameter in determining rock reaction to a construction, one of several rock mass classification methods is point load test. Point load test is preferred because of its ease in determining rock mass classes, both in terms of cost and time. Until now, many research results have been found that discuss the point load test with the aim of reducting the error value from the test result. In this research, a literature review was conducted from several research results to find outlines of things that must be considered and determine its superiority in converting to other test values. The results showed that the operator's ability, cone plate geometry, periodic tool maintenance, loading arm length and sample geometry as things to consider in point load test and point load index value can be converted to uniaxial compressive strength value, taking into account the geological conditions and correction values for each rock type.Keyword : PLT, rock mass classification, tool, test
A Review of Artificial Intelligent for Prediction Ground Vibration in Blasting Risaldi Hidayat; Tedy Agung Cahyadi; Eddy Winarno; Singgih Saptono; S. Koesnaryo
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Blasting activities cause ground vibrations that affect the potential for ground displacement in surface mining. That will have an impact on the stability of the slope and environmental problems. Therefore, it is necessary to analyze the prediction ground vibrations measured by peak particle velocity (PPV). Artificial Intelligent (AI) has an important role to overcome the limitations of parameters used, uncertainty, and inaccuracy than conventional methods. AI for prediction ground vibration has grown a lot in recent years. To find out an accurate and effective AI technique, the authors compare several techniques by evaluating their strengths and weaknesses based on literature studies. The ICA-M5Rules model and ICA-ANN model are techniques that have high accuracy and flexibility of use than other presented techniques. And related to the use of parameters, there are other parameters that play an important role which will be reviewed in this journal.
Tinjauan Literatur: Pelapukan dan Pengaruhnya terhadap Kekuatan Batuan Dwi Yolanda Sumbung; S. Koesnaryo; Eddy Winarno; Singgih Saptono; Tedy Agung Cahyadi
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Rock strength can be known from it's physical and mechanical properties which are strongly influenced by weathering. It requires a lot of time and research cost to find out about the effect of weathering on rock strength in various types of rock, therefore research was conducted in a literature review. The higher of weathering class affect the decrease of rock strength.
FAKTOR-FAKTOR YANG MEMPENGARUHI KONDISI EKONOMI MASYARAKAT PEMUKIMAN KUMUH MENGGUNAKAN REGRESI BERGANDA ridayati
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Potensi sumber daya alam di kawasan pesisir yang beranekaragam menjadi daya tarik masyarakat untuk memenuhi kebutuhan hidupnya. Hal ini membentuk pemukiman nelayan yang bervariasi sesuai dengan tingkat kehidupan masyarakatnya. Kampung wuring dan Bebeng Alok Barat adalah salah satu contoh kampung pemukiman kumuh. Permasalahan kawasan permukiman ini memiliki tingkat pelayanan akan kebutuhan sarana dan prasarana dasar lingkungan yang sangat terbatas. Permasalahan permukiman berawal dari pembangunan rumah yang tidak beraturan sehingga penyediaan sarana dan prasarana yang tidak terencana dengan baik. Tujuan penelitian ini adalah memberikan informasi mengenai kondisi sosial ekonomi masyarakat pemukiman kumuh. Metode penelitian yang dipakai adalah deskriptif evaluatif serta Inferensial yaitu regresi linear berganda untuk memprediksi pengaruh kondisi social, kualitas lingkungan, pendistribusian barang terhadap kondisi social ekonomi masyarakat pemukiman kumuh. Hasil analisis menunjukkan bahwa secara simultan ketiga faktor tersebut berpengaruh signifikan terhadap kondisi ekonomi dengan persamaan regresi = 0,625 - 0,096 + 0,135 + 0,072 + e.
Analisis Litofasies dan Lingkungan Pengendapan Formasi Nanggulan Lintasan Kali Songgo, Kabupaten Kulon Progo Delvina Syaifira Norma Hani; Al Hussein Flowers Rizqi; Hita Pandita
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The Nanggulan Formation has a very narrow spread compared to other formations. In Kulon Progo formation has the oldest age in the Middle Eocene-Early Oligocene. This research is located on the Songgo River at coordinates 07 ° 44 '00.7 "S - 110 ° 12' 17.5" E to 07 ° 44 '15.3 "S - 110 ° 11' 53.6" E. This research intends to reveal the types of depositional environments that are developed along the Kali Songgo track using measured stratigraphic log analysis. The stratigraphic log's interpretation indicated lithofacies, facies associations, and the depositional environment. The lithofacies that compiled the research location based on lithological data and sedimentary structure can be divided into ten types: a.Bedded claystone, b.Laminated sandstone, c.Cross-bedding sandstone, d.Bedded sandstone, e.Bedded siltstone, f.Massive claystone, g.Laminated siltstone, h.Graded-bedding sandstone, i.Wavy sandstone, and j.Massive sandstone. Three facies associations are recognized based on the lithofacies grouping: 1. Mud flats, 2. Mixed flats, and 3. Sand flats. The depositional environment that developed along Kali Songgo track was Tidal flats.
Ekstraksi Dalam Kolom Unggun Tetap dan Pemurnian secara Simultan pada Isolasi Minyak Dedak Padi Haryono
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Pada proses penggilingan padi menjadi beras dihasilkan 8-10% dedak padi. Pemanfaatan dedak padi umumnya baru sebatas sebagai pakan ternak. Padahal pada dedak padi terdapat minyak sekitar 10-26% dari berat dedak padi. Minyak dedak padi dilaporkan sebagai minyak nabati unggul karena minyak tersebut didoninasi oleh asam lemak tak jenuh. Minyak dedak padi mengandung sekitar 32-35% asam linoleat. Asam linoleat dilaporkan mampu menurunkan kolesterol darah dan mencegah aterosklerosis. Berbagai metode ekstraksi telah diterapkan untuk mengekstraksi minyak dedak padi. Metode ekstraksi soxhlet merupakan metode yang dianggap paling cocok untuk mengektraksi minyak dedak padi. Namun metode tersebut umumnya hanya diterapkan pada ekstraksi skala kecil. Tujuan penelitian ini adalah memodifikasi metode ekstraksi soxhlet menjadi metode ekstraksi kolom unggun tetap, dan mempelajari pengaruh jenis pelarut dan ketinggian unggun (dedak padi) terhadap rendemen dan sifat fisiko-kimia dari minyak dedak padi yang dihasilkan. Hasil penelitian menunjukkan bahwa penggunaan pelarut etil asetat menghasilkan rendemen minyak dedak padi lebih banyak dibandingkan dengan pelarut etanol untuk semua variasi ketinggian unggun dedak padi. rendemen maksimum minyak dedak padi sebanyak 18,2% diperoleh pada ekstraksi dengan pelarut etil asetat dan pada ketinggian unggun dedak 5 cm. Pada kondisi ekstraksi tersebut dihasilkan minyak dedak padi dengan sifat fisiko-kimia paling optimal, yaitu dengan bilangan asam, bilangan penyabunan, bilangan iod, densitas, indeks bias, dan viskositas berturur-turut sebesar 48,3 mg KOH/g, 252,1 mg KOH/g, 105,4 g I2/100 g, 0,910 g/mL, 1,463, dan 6,3 mPa s.
Aplikasi Logika Fuzzy Pada Pengelompokan Nilai SWR Ideal Antena dengan Bahan Dasar Allumunium roni kartika pramuyanti
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The SWR is a comparison of the resistance value, here the SWR value is classified. Assisted by the FIS editor of the Matlab program, several classification results will be obtained. With the Fuzzification process, 3 types of classifications will be obtained, namely less than ideal, ideal and not ideal. There are 2 ways to calculate the SWR which all produce ideal results that are almost the same as the results of the observations. The use of the FIS editor in the classification here is in the form of traces, each of which has a range of values, although each input / input only has one value, so the FIS editor uses the triangle membership function. It can be concluded that the SWR value that can make an instrument operate properly is not necessarily ideal because instruments such as antennas will be heavily influenced by external environmental factors.
Survey dan Inventarisasi Potensi Sumber Daya Air Baku di Wilayah Sungai Progo Opak Serang Edy Sriyono
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The purpose of conducting a survey and inventory of raw water resources in the Progo Opak Serang River Basin is to find out how much potential raw water resources in the river area can be used as raw water for drinking water. Inventory of potential raw water resources is carried out by searching the location, inventorying various potential existing water resources and other relevant information on the location of water resources and the network path to be traversed in order to obtain: information of water resources management planning, secondary data collection and primary data collection. From the potentials of water sources, a score is made to determine the most potential water sources for planning. Scoring is required to determine the location of the selected water source. The survey and inventory results show that the potential of raw water resources that can be utilized in the Progo Opak Serang River Basin as a whole is 68 liters / second. As for the method of taking raw water in general, it can be done with a gravity system, a pump or a combination of both.

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