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MODEL SPACE TIME AUTOREGRESSIVE INTEGRATED (STARI) UNTUK DATA DEBIT AIR SUNGAI CITARUM DI PROVINSI JAWA BARAT Alawiyah, Mutik; Kusuma, Dianne Amor; Ruchjana, Budi Nurani
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 14 No 1 (2020): BAREKENG: Jurnal Ilmu Matematika dan Terapan
Publisher : MATHEMATIC DEPARTMENT, FACULTY OF MATHEMATICS AND NATURAL SCIENCES, UNIVERSITY OF PATTIMURA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (911.908 KB) | DOI: 10.30598/barekengvol14iss1pp147-158

Abstract

Rainfall in West Java during the rainy season is quite high. This causes the area around the watershed to experience flooding. However, in the dry season the Citarum watershed experiences drought. Changes in the Citarum river water discharge from time to time is not only influenced by time but also influenced by the location around it. To forecast the Citarum river water discharge data, the Space Time Autoregressive Integrated (STARI) model can be used. In this study, the STARI model was applied to the Citarum river water discharge data at all four observation sites. Based on the stationary data, it showed that the data is not stationary, so the differencing process must first be done 1 time. The identification of the order of the AR model was one because the PACF plot was truncated in lag 1. The spatial lag used in this study was the spatial lag of order 2, so the Citarum river water discharge could be predicted with the STARI model. Estimation of STARI) model parameters with a uniform weight matrix was ​estimated by the MLE method with the help of R and S-Plus 8.0 softwares. STARI model with MAPE less than 10% was used for predicting Citarum river water discharge data for the four observation locations, thus the STARI model can be recommended to predict Citarum river water discharge data.
PENERAPAN METODE UNIVERSAL KRIGING (UK) UNTUK PREDIKSI KONSENTRASI PARTICULATE MATTER 2.5 (PM2.5) DI KOTA BANDUNG Putri, Salsabila Eka; Kusuma, Dianne Amor; Ruchjana, Budi Nurani
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 14 No 2 (2020): BAREKENG: Jurnal Ilmu Matematika dan Terapan
Publisher : MATHEMATIC DEPARTMENT, FACULTY OF MATHEMATICS AND NATURAL SCIENCES, UNIVERSITY OF PATTIMURA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (910.837 KB) | DOI: 10.30598/barekengvol14iss2pp285-296

Abstract

The tendency of increasing industrial and population activities in the city of Bandung causes a decrease in air quality. One material that causes air pollution which is very dangerous for health is particulate matter 2.5 (PM2.5). Efforts to control and overcome PM2.5 concentration are carried out through measurements in several locations. However, due to limitations of measuring devices and costs, so not all locations in the city of Bandung can be measured PM2.5 concentration. PM2.5 concentration data tends not to be stationary. Therefore it is necessary to interpolate the PM2.5 concentration data using the Universal Kriging method. In this paper, the Universal Kriging method can be applied to predict PM2.5 concentrations in locations that are not sampled because the observed PM2.5 concentration data are spatial data that have different PM2.5 concentrations at each location. Data were analyzed with the help of software R 3.5.3 and ArcGIS 10.4 to create contour maps. Based on the prediction results of PM2.5 concentrations at locations that were not sampled, obtained a first order trend equation is better used to predict PM2.5 concentrations because it has a minimum Universal Kriging error variance value compared to the second order trend equation. The results showed that the location with high PM2.5 concentration was in the northwest of Bandung City. Contour maps show locations that have low to high PM2.5 concentrations
GSTARI-ARCH MODEL AND APPLICATION ON POSITIVE CONFIRMED DATA FOR COVID-19 IN WEST JAVA Alawiyah, Mutik; Kusuma, Dianne Amor; Ruchjana, Budi Nurani
MEDIA STATISTIKA Vol 14, No 2 (2021): Media Statistika
Publisher : Department of Statistics, Faculty of Science and Mathematics, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/medstat.14.2.146-157

Abstract

Time series model that is commonly used is the Box-Jenkins based time series model. Time series data phenomena based on Box-Jenkins can be combined with spatial data, it is called the space time model One model based on Box-Jenkins model with heterogeneous location characteristics is the Generalized Space Time Autoregressive Integrated (GSTARI) model for a model that assumes data is not stationary or has a trend. This paper discusses the development of the GSTARI model with the assumption that the error variance is not constant which is applied to positive data confirmed by Covid-19 in West Java Province, especially in 4 regencies/cities that have cases in the high category from 6 March 2020 until 31 December 2020. Four regencies/cities are Depok City, Bekasi City, Bekasi Regency, and Karawang Regency. Parameter estimation method for the assumption of non-constant error variance can use Autoregressive Conditional Heteroscedasticity (ARCH) method. GSTARI-ARCH modeling procedure followed three Box-Jenkins stages, namely the identification process, parameter estimation and checking diagnostic. Application of the GSTARI-ARCH Model to Covid-19 positive confirmed data in 4 regencies/cities has a minimum value of RMSE in Bekasi City. The plot of forecast results for the four regencies/cities has a similar pattern to the actual data only applicable for a short time for 1-2 days.
THE RELATIONSHIP BETWEEN MUSICAL INTELLIGENCE AND THE ENHANCEMENT OF MATHEMATICAL CONNECTION ABILITY USING ETHNOMATHEMATICS AND THE MOZART EFFECT Dianne Amor Kusuma; Estiyan Dwipriyoko
Jurnal Infinity Vol 10, No 2 (2021): VOLUME 10, NUMBER 2, INFINITY
Publisher : IKIP Siliwangi and I-MES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v10i2.p191-202

Abstract

The background of this study is mathematics learning outcomes of junior high school students in agricultural areas are still low because they are less motivated to learn mathematics, so that is has an impact on their low learning outcomes. This study aims to find the relationship between musical intelligence and the enhancement of mathematical connection ability by applying Ethnomathematics and the Mozart Effect for increasing students’ motivation to learn mathematics. This study used a quasi-experimental non-equivalent control group design in grade 7 students at SMPN Bojongsoang 1, Kabupaten Bandung. The instruments used were the test of mathematical connection ability, musical intelligence questionnaire, and observation sheets. The results showed that: (1) there were differences in mathematical connection ability of students who received Ethnomathematics and the Mozart Effect learning with students who received direct learning; (2) musical intelligence has a positive impact on the enhancement of students' mathematical connection ability; and (3) students have a positive attitude towards learning with application of Ethnomathematics and the Mozart Effect, and more motivated to learn mathematics. The conclusion of this study is that there is a relationship between musical intelligence and the enhancement of mathematical connection ability, and students are more motivated to learn mathematics. Implication of this research for future research and learning practice is that students' mathematical connection ability can be explored and improved in various ways, one of which is by applying Ethnomathematics and the Mozart Effect in mathematics learning, and can be influenced by many things, one of them is musical intelligence. Therefore, in future research, it would be recommended to study the relationship between musical intelligence and the enhancement of other mathematical abilities using Ethnomathematics and the Mozart Effect.
Pemanfaatan Limbah Plastik untuk Pembuatan Paving Block di Desa Cileunyi Kulon Dianne Amor Kusuma
Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 2, No 3 (2019): Kumawula: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kumawula.v2i3.24554

Abstract

Tujuan kegiatan KKN tematik Citarum Harum yang berlokasi di Desa Cileunyi Kulon ini adalah untuk menanamkan kepribadian yang kuat pada mahasiswa tentang nasionalisme, jiwa Pancasila, tanggungjawab, kepemimpinan, kewirausahaan, serta meningkatkan empati dan kepedulian mahasiswa secara langsung dengan kehidupan masyarakat. Dalam kegiatan ini yang menjadi fokus perhatian adalah membantu masyarakat mencari solusi dari permasalahan-permasalahan yang berkenaan dengan lahan kritis, konservasi air dan pengendalian erosi, pengelolaan sampah dan limbah pertanian, sanitasi, serta mitigasi bencana, melalui penyelenggaraan beberapa workshop/pelatihan kepada masyarakat, melakukan berbagai kegiatan sosial seperti kerjabakti, olahraga bersama, beribadah bersama, berdialog dengan para perangkat desa dan masyarakat Desa Cileunyi Kulon, memberikan beberapa tong sampah, serta poster-poster yang berisi himbauan untuk hidup sehat dan menjaga keberlanjutan alam. Berdasarkan hasil survei, wawancara, dan observasi yang dilakukan terhadap masyarakat sekitar Desa Cileunyi Kulon terutama masyarakat sekitar DAS Citarum, bahwa keperdulian masyarakat terhadap pengolahan sampah sangat minim yang dapat menimbulkan dampak negatif terhadap kesehatan dan mengganggu kelestarian fungsi lingkungan, baik lingkungam pemukiman, hutan, persawahan, dan sungai. Untuk mengurangi volume timbunan sampah yang tidak terkelola dengan baik, maka dilakukan upaya pemanfaatan limbah plastik untuk pembuatan paving block di Desa Cileunyi Kulon. Sasaran dari kegiatan KKN ini adalah seluruh masyarakat Desa Cileunyi Kulon. Metode pengumpulan data yang dilgunakan dalam kegiatan KKN ini adalah survei, wawancara, dan observasi. Hasil dari kegiatan KKN ini secara umum adalah antusiasme dari masyarakat untuk menjaga kebersihan lingkungan lebih meningkat. Hal itu diperlihatkan dengan banyaknya masyarakat yang terlibat dalam kegiatan kerjabakti yang diselenggarakan oleh mahasiswa, bertambahnya jumlah masyarakat yang menyediakan tong sampah di depan tempat tinggal mereka, serta limbah plastik di Desa Cileunyi Kulon dapat dikelola dengan lebih baik.   The Citarum Harum thematic KKN program, which is located in the village of Cileunyi Kulon, generally aims to instill strong personalities in students about nationalism, the spirit of Pancasila, responsibility, leadership, entrepreneurship, as well as increasing student empathy and concern towards people's lives. In this program the focus of attention is helping the community find solutions to various problems, one of which is the management of waste and plastic waste. Based on the results of surveys, interviews, and observations made on the communities around the village of Cileunyi Kulon, especially communities around the Citarum watersheds, that communities care for waste management is very minimal and there are many piles of plastic waste that can cause negative impacts on health and disturb the preservation of environmental functions, neighborhoods, forests, rice fields, and rivers. To reduce the volume of plastic waste that is not managed properly, an attempt is made to utilize plastic waste for the manufacture of paving blocks in Cileunyi Kulon Village. The method used in the effort to utilize plastic waste is by providing counseling and assistance to the people of Cileunyi Kulon Village about the process of collecting plastic waste, management, and how to market online the results of plastic waste management. The results of efforts to utilize plastic waste for the manufacture of paving blocks in the village of Cileunyi Kulon are very good response and enthusiasm of the community. So that the utilization of plastic waste can be sustainable, it is advisable to provide regular counseling to the community of Cileunyi Kulon village.
PENERAPAN PROGRAM DARMASAN (SADAR MASKER PADA ANAK-ANAK) DALAM UPAYA MENGURANGI PENYEBARAN COVID-19 Dianne Amor Kusuma
Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 4, No 1 (2021): Kumawula: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kumawula.v4i1.32019

Abstract

Akhir-akhir ini penyebaran Covid-19 di Indonesia sangat tinggi. Ini disebabkan ketidakpatuhan sebagian besar masyarakat terhadap himbauan pemerintah untuk selalu melakukan gerakan 3M (memakai masker, menjaga jarak, dan mencuci tangan menggunakan sabun dengan air mengalir). Kegiatan penerapan program Darmasan (Sadar Masker pada Anak-Anak) ini dilaksanakan dengan tujuan untuk membantu pemerintah dalam upaya memutus rantai penyebaran Covid-19 terutama di kalangan anak-anak. Yang menjadi fokus perhatian dalam kegiatan ini adalah anak-anak dan para orang tua yang masih mengabaikan himbauan pemerintah untuk selalu memakai masker di masa pandemi ini. Berdasarkan hasil wawancara, survei, dan observasi yang dilakukan, ditemukan bahwa masih terdapat anak-anak di beberapa daerah di Indonesia yang belum menyadari dampak negatif tidak memakai masker ketika beraktivitas di luar rumah, di masa pandemi ini. Untuk mengatasi masalah tersebut, metode yang dilakukan adalah memberikan pemahaman dan pendampingan agar mereka menyadari pentingnya memakai masker, terutama pada anak-anak, yang sangat rentan terpapar Covid-19.Hasil dari penerapan program Darmasan ini adalah respon yang sangat positif dari para orang tua yang merasa terbantu dengan adanya kegiatan ini dan berharap agar kegiatan ini dilakukan secara berkelanjutan.
KEGIATAN PEMBERIAN BANTUAN SOSIAL PANDEMI COVID-19 DI DESA SEKITAR KAMPUS UNPAD JATINANGOR Wahyu Gunawan; Dianne Amor Kusuma
Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 3, No 3 (2020): Kumawula: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kumawula.v3i3.28626

Abstract

Tujuan dilaksanakannya kegiatan solidaritas sosial pandemi Covid-19 ini adalah sebagai wujud empati serta kepedulian beberapa dosen Universitas Padjadjaran (Unpad) terhadap masyarakat terdampak Covid-19. Fokus perhatian dalam kegiatan solidaritas sosial ini adalah membantu  masyarakat di beberapa desa sekitar kampus Unpad Jatinangor yang kekurangan bahan pangan. Hasil survei dan pendataan yang dilakukan, tercatat beberapa desa yang sangat membutuhkan bahan pangan disebabkan sebagian besar masyarakatnya kehilangan mata pencaharian akibat pandemi Covid-19. Oleh karena itu perlu dilakukan upaya yang dapat meringankan beban mereka. Metode yang dilakukan dalam upaya membantu meringankan beban masyarakat adalah dengan cara melaksanakan kegiatan solidaritas di desa-desa sekitar kampus Unpad Jatinangor. Hasil dari kegiatan ini adalah tanggapan positif dari masyarakat karena mereka sangat terbantu dengan adanya kegiatan solidaritas ini dan sangat berharap agar kegiatan ini dilakukan secara berkelanjutan dan lebih merata.
SOSIALISASI GERAKAN “SARTAMASCITA” DI KALANGAN PENJAJA MAKANAN KELILING UNTUK MENEKAN PENYEBARAN COVID-19 Dianne Amor Kusuma; Budi Nurani Ruchjana
Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 5, No 1 (2022): Kumawula: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kumawula.v5i1.35629

Abstract

Penyebaran Covid-19 di Indonesia pada pertengahan bulan Juni 2021 hingga saat ini mengalami lonjakan yang sangat tinggi. Hal ini disebabkan perilaku sebagian besar masyarakat Indonesia yang abai terhadap protokol kesehatan. Sosialisasi gerakan Sartamascita dilaksanakan dalam upaya membantu pemerintah mengurangi penyebaran Covid-19 di kalangan penjaja makanan keliling yang masih abai terhadap protokol kesehatan sehingga berpeluang menyebarkan Covid-19 kepada pembeli. Fokus perhatian dalam kegiatan sosialisasi ini adalah para penjaja makanan keliling yang tidak mematuhi himbauan pemerintah untuk selalu menjalankan protokol kesehatan ketika berjualan, seperti memakai masker, memakai sarung tangan plastik, dan mencuci tangan. Hasil survei, wawancara, dan pengamatan, menunjukkan bahwa masih terdapat penjaja makanan keliling di beberapa lokasi di Bandung, Bogor, dan Cirebon yang belum menerapkan prokes ketika berjualan. Untuk mengatasi masalah itu, metode yang dilakukan yakni memberikan sosialisasi kepada para penjaja makanan keliling tentang gerakan Sartamascita. Hasil dari sosialisasi gerakan Sartamascita  ini adalah tanggapan positif dari para pembeli dan para penjaja makanan keliling, karena mereka lebih menyadari pentingnya menerapkan protokol kesehatan ketika berjualan agar tidak berpeluang menyebarkan Covid-19 kepada pembeli.
PENINGKATAN PENJUALAN DANDANG MENGGUNAKAN METODE VIRAL MARKETING DI DESA CILEUNYI KULON Dianne Amor Kusuma
Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 3, No 2 (2020): Kumawula: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kumawula.v3i2.26267

Abstract

KKN Kewirausahaan di Desa Cileunyi Kulon ini secara umum bertujuan menanamkan jiwa nasionalisme, jiwa Pancasila, rasa tanggungjawab, kepemimpinan, kewirausahaan, serta meningkatkan empati dan kepedulian mahasiswa pada kehidupan masyarakat. Fokus kegiatan KKN ini adalah membantu masyarakat mengidentifikasi dan mengembangkan potensi usaha di Desa Cileunyi Kulon.  Berdasarkan hasil survei, wawancara, dan pengamatan, ditemukan masalah, yaitu  beberapa pengrajin dandang di Desa Cileunyi Kulon kesulitan memasarkan hasil usaha mereka.   Alternatif metode pemasaran, yakni viral marketing diperkenalkan pada pelaku usaha dandang mengatasi masalah tersebut.  Workshop mengenai metode viral marketing bagi pelaku usaha dandang di  di Desa Cileunyi Kulon  mendapat tanggapan yang sangat positif dari masyarakat Desa Cileunyi Kulon. Agar penerapan metode viral marketing ini dapat berkelanjutan, maka penyuluhan dan pelatihan pada masyarakat Desa Cileunyi Kulon secara rutin perlu dilakukan.The aims of entrepreneurship community service (KKN) activity in Cileunyi Kulon village in general is to instill the spirit of nationalism, the spirit of Pancasila, responsibility, leadership, entrepreneurship, as well as increasing students’ empathy and their concern for community life. The focus of attention in this KKN activity is to help the community for identifying business potential in Cileunyi Kulon village and help to develop it. Based on the results of surveys, interviews, and observations, it was found that there were problems that some craftsmen of dandang in Cileunyi Kulon village difficult to market their products. It is necessary to apply an appropriate alternative marketing method, namely viral marketing, for solving the problem. The method used in the effort to apply viral marketing is by providing counseling and training to the people of Cileunyi Kulon village. The result of applying the viral marketing method in Cileunyi Kulon village was a very positive and enthusiastic response from the people of Cileunyi Kulon village. In order to the implementation of viral marketing method could be sustainable, it is advisable to hold counseling and training to the people of Cileunyi Kulon village regularly. 
Rainfall Model Using Principal Component Regression Analysis with R Software in Sulawesi Annisa Alma Yunia; Dianne Amor Kusuma; Bambang Suhandi; Budi Nurani Ruchjana
Desimal: Jurnal Matematika Vol 3, No 3 (2020): Desimal: Jurnal Matematika
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1960.287 KB) | DOI: 10.24042/djm.v3i3.6108

Abstract

Indonesia is a tropical country that has two seasons, rainy and dry. Nowadays, the earth is experiencing the climate change phenomenon which causes erratic rainfall. The rainfall is influenced by several factors, one of which is the local scale factor. This research was aimed to build a rainfall model in Sulawesi to find out how the rainfall relationship with local scale factor in Sulawesi. In this research, the data used were secondary data which consisted of 15 samples with 6 variables from Badan Pusat Statistik (BPS). The limitation of the sample size in this study was due to the limited secondary data available in the field. The data was processed using Principal Component Regression Analysis. The first step was reducing local scale factor variables so that the principal component variable could be obtained that can explain variability from the original data which then that variable was analyzed using principal regression analysis. The data were analyzed by utilizing R Studio software. The results show that two principal component variables can explain 75.2% of the variability of original data and only one principal component variable that was significant to the rainfall variable. The regression model explained that the relationship between rainfall, humidity, air temperature, air pressure, and solar radiation was in the same direction while the relationship between rainfall and wind velocity was not in the same direction. Overall, the results of the study provided an overview of the application of the Principal Component Regression analysis to model the rainfall phenomenon in the Sulawesi region using the R program.