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PEMANFAATAN METODE GEOGRAPHICALLY WEIGHTED REGRESSION (GWR) UNTUK MERAMALKAN DEBIT PUNCAK PADA DAERAH ALIRAN SUNGAI Atikah, Nur
MAGISTRA Vol 26, No 87 (2014): Magistra Edisi Maret
Publisher : MAGISTRA

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Abstract

Debit puncak daerah aliran sungai dipengaruhi beberapa faktor, salah satu faktor yang mempengaruhi adalah faktor posisi geografis. Analisis regresi merupakan salah satu analisis untuk menentukan tingkat pengaruh suatu variabel independen dan variabel dependen. Masalah utama dari metode ini adalah jika metode ini diterapkan pada data spasial. Mengatasi permasalahan pada data spasial, metode statistik yang akan digunakan adalah Geographically Weighted Regression (GWR), yaitu model yang menggunakan faktor geografis sebagai variabel independen yang dapat mempengaruhi variabel dependen. Kata kunci : Regresi, Data Spasial, Geographically Weighted Regression (GWR)
SIMULASI MODEL DINAMIK PENGANGKUTAN CRUDE PALM OIL (CPO) DI PT. XYZ UNTUK MEMINIMALKAN BIAYA TRANSPORTASI PENGADAAN BAHAN Atikah, Nur; Sutopo, Wahyudi
J@ti Undip : Jurnal Teknik Industri Volume 9, No.2, Mei 2014
Publisher : Departemen Teknik Industri, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (211.58 KB) | DOI: 10.12777/jati.9.2.125-134

Abstract

Adanya krisis ekonomi di Eropa membuat harga komoditas Crude Palm Oil (CPO) menurun. Disisi lain, biaya operasi dari proses produksi CPO ini meningkat 9,8% karena biaya transportasi yang tinggi.  Dipandang dari sistem kajian manajemen sistem rantai pasok, kerugian atas menurunnya harga ditambah dengan tingginya biaya transportasi akan semakin merugikan PT. XYZ. Dalam upaya menekan kerugian yang terjadi, meminimasikan biaya transportasi pengadaan bahan dapat menjadi salah satu alternatif solusinya. Kebijakan pada level strategis yang dapat dijadikan usulan, salah satunya dengan mengajukan alternatif moda transportasi dengan memperhatikan faktor kedinamisan dan ketidakpastian. Faktor-faktor tersebut dapat diimplementasikan dengan penerapan simulasi model dinamik. Hasil dari model dinamik yang diusulkan, penurunan biaya transportasi dicapai dengan pemilihan dan penentuan jumlah dari setiap alternatif moda transportasi yang diusulkan pada setiap level pada elemen sistem yang telah didefinisikan. Kata kunci : model dinamik, biaya transportasi, pengadaan crude palm oil Abstrct The economic crisis in Europe makes the price of commodities such as Crude palm Oil (CPO) declined. On the other hand, the operating cost of the CPO production increased 9.8% due to high transportation costs. From the point of view of supply chain management systems assessment, loss on declining prices coupled with the high transportation costs will be more detrimental to PT. XYZ. In an effort to reduce the loss, transportation cost of procurement cycle can be an alternative solution. The strategic level policy that can be proposed, is proposing an alternative mode of transportation were attentive to dynamics and uncertainty factors. The factors can be implemented by the application of dynamic simulation models. Results of the proposed dynamic model, reduced transportation costs achieved by the selection and determination of the amount of each proposed alternative transportation modes at each level of the system elements has been defined. Keywords : dynamic models, transportation cost, procurement of crude palm oil
Rancang Bangun Alat Pasteurisasi Susu Tenaga Surya Menggunakan Sistem Kolektor Surya dan Pengukur Suhu Berbasis Sensor DS18B20 Waterproof Atikah, Nur; Lapanporo, Boni Pahlanop; Nurhasanah, Nurhasanah
PRISMA FISIKA Vol 6, No 3 (2018)
Publisher : Jurusan Fisika, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (511.073 KB) | DOI: 10.26418/pf.v6i3.28875

Abstract

Telah dibuat alat pasteurisasi susu tenaga surya menggunakan sistem kolektor surya dan pengukur suhu berbasis sensor DS18B20 waterproof. Aplikasi pasteurisasi yang diterapkan adalah pasteurisasi metode LTLT (Low Temperature Long Time), yaitu proses pasteurisasi dengan memanaskan susu pada suhu 60oC-65oC yang dipertahankan minimal selama 30 menit. Perancangan alat terdiri dari perancangan kolektor surya, pelat absorber, dan tangki pasteurisasi kemudian dilanjutkan pada proses pembuatan alat. Selain itu, alat ini juga dilengkapi dengan sistem pengukur suhu menggunakan sensor DS18B20 waterproof pada tangki pasteurisasi, kolektor surya, dan lingkungan. Data yang diambil berupa suhu pada kolektor surya, tangki pasteurisasi, dan lingkungan. Dari hasil pengujian yang dilakukan, suhu pasteurisasi yang dihasilkan oleh alat sebesar 63oC sampai 65oC. Efisiensi kolektor rata-rata sebesar 46,7% sedangkan efisiensi kolektor total sebesar 44%. Berdasarkan hasil uji fisik, susu pasteurisasi dapat bertahan selama 8 jam pada suhu ruang (28oC-32oC) dan 7 hari pada suhu pendingin (±10oC). Sedangkan berdasarkan hasil uji bakteri, nilai ALT dan koliform pada susu pasteurisasi telah memenuhi standar Badan Pengawas Obat dan Makanan (BPOM) tahun 2016 dan tidak terdapat cemaran bakteri Escherichia coli.
PENGARUH MODEL REALISTIC MATHEMATICS EDUCATION BERBASIS ETNOMATEMATIKA TABUT TERHADAP KEMAMPUAN KOMUNIKASI MATEMATIKA SISWA KELAS IV SDN DI KOTA BENGKULU Atikah, Nur; Karjiyati, Victoria; Noperman, Feri
JURIDIKDAS Vol 3, No 1 (2020)
Publisher : PGSD FKIP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/juridikdas.3.1.25-32

Abstract

The purpose of this study is to determine the effect of the use of relistic mathematics education model based tabut ethnomatematics on mathematical communication skills. This research is quantitative. The method used quasi experimental design with the matching only pretest-posttest group design. The population in this study is all students of class IV SD is tabut harmony familly. Subjects in this study was study group IV A in SDN 09 Kota Bengkulu as experimental class and study group IV C in SDN 02 Kota Bengkulu as cotrol class. The sampling technique used cluster random sampling. The research instrument used description test sheet. Taking the test twice before and after giving treatment to sample class. Of this research by using SPSS 16.0 for windows. Based on analysis of research data is the result of difference between the pretest-posttest control class and experimental class. This difference is evidenced by the significance value od the t test 0,00 < 0,05 means.From these results, it can be concluded that there are difference in the use of relistic mathematics education models bases tabut etnomatematics on mathematical communication skills.Keywords: Realistic Mathematics Education Model, tabut ethnomatematics, Communication Skills, Mathematics
Analisis Hasil Belajar Siswa Ditinjau dari Peran Orang Tua Atikah, Nur; Marlina, Marlina; Desyandri, Desyandri
Jurnal Pendidikan Tambusai Vol. 5 No. 1 (2021): 2021
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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Abstract

Tujuan dari penelitian ini adalah untuk mendeskripsikan peran orang tua terhadap hasil belajar siswa di Sekolah Dasar (SD). Metode yang digunakan dalam penelitian ini yaitu metode library research atau studi kepustakaan. Teknik pengumpulan data yang digunakan adalah dengan menganlisis literature yang sesuai dengan kriteria peneliti sehingga menjawab pertanyaan peneliti dan menjadi acuan ketika mendeskripsikan fenomena-fenomena. Teknik analisis data yang digunakan yaitu deskriptif kualitatif. Dapat disimpulkan bahwa orang tua yang terlibat langsung dalam dunia pendidikan anaknya dapat meningkatkan hasil belajar siswa secara signifikan serta meningkatkan prilaku-prilaku baik pada diri siswa.
An Analysis of Mathematics-Integrated Scientific Literacy Competence of in-Service Teachers in Elementary School Fitria, Yanti; Atikah, Nur
International Conference on Elementary Education Vol. 4 No. 1 (2022): Proceedings The 4th International Conference on Elementary Education
Publisher : Elementary Education Study Program School of Postgraduate Studies Universitas Pendidikan Indonesia in collaboration with UPI PRESS

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Abstract

Living in the era of globalization, people are required to have literacy competencies in order to build and validate the knowledge received. Furthermore, rapid technological developments demand everyone to be better able to sort out opinions and facts, and to recognize biased content or fake news. Therefore, teachers, especially in-service teachers have an important role in improving literacy competence of elementary school students. They have to meet three scientific literacy competencies that are integrated in mathematics to improve their quality as educators. This study then aims to determine the integrated mathematical literacy competence of in-service teachers in elementary school. The competence consists of three indicators, including 1) being able to explain scientific phenomena, 2) being able to assess and apply scientific procedures, 3) and being able to interpret data. This descriptive study employs a test of ten questions as an instrument. The results of data analysis show that mathematics-integrated scientific literacy competence of in-service teachers in elementary school in explaining scientific phenomena, and assessing and applying scientific procedures is high. Meanwhile, integrated mathematics scientific literacy competence of the teachers in interpreting data is low.
E-Module Based on RME Approach in Improving the Mathematical Communication Skills of Elementary Students Gistituati, Nurhizrah; Atikah, Nur
Jurnal Ilmiah Sekolah Dasar Vol 6, No 1 (2022): February 2022
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jisd.v6i1.42314

Abstract

The low learning outcomes of mathematics are caused by the ineffectiveness of learning carried out by teachers. Innovation is needed that is in line with the development of communication technology. One of the innovations in the development of teaching materials in the form of e-modules that are contextualized with students' daily lives. The purpose of this study is to ditermined the effectiveness of the developed mathematics e-modules using the Realistic Mathematic Education (RME) approach in improving the mathematics communication skills of the elementary students. This study is a follow-up to the results of the validity and practicality tests of the e-module that has been developed. The development of e-modules using 4Ds models. In the previous studies, the validity of the developed e-module was tested through expert judgement, and the practicality was tested through individuals, small and large group trials. The effectiveness of the developed e-module was tested through pretest-posttest control group design using essay test; with 26 students at the experimental class and 24 students at the control class. Data were analyzed using t-test and N-gain score. The research found that the t score is 3,706; and the N-gain score is 63.81% for experimental class, and 58,85% for control class.  These results indicate that the use of developed e-modules based on the RME approach can improves student mathematical communication skills. Thus, it can be concluded that the developed e-module-based on RME approach is effective to improve the mathematical communication skills of the elementary students.
PUBLIC PERCEPTION REGARDING THE SELECTION OF CHEMICAL AND TRADITIONAL MEDICINE FOR HYPERCHOLESTEROLEMIA IN SUKOREJO GIRITIRTO WONOGIRI Atikah, Nur; Murwati; Batrisyia, Amalia
Jurnal Jamu Kusuma Vol. 4 No. 1 (2024): JURNAL JAMU KUSUMA
Publisher : Poltekkes Kemenkes Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37341/jurnaljamukusuma.v4i1.87

Abstract

Hypercholesterolemia can trigger cardiovascular disease, and treatment options use chemical drugs and traditional medicine. The aim of the research was to determine public perceptions regarding the choice of chemical drugs and traditional medicines for hypercholesterolemia in the Sukorejo Giritirto Wonogiri area. The research method used a descriptive cross-sectional approach, with a purposive sampling technique for respondents who met the inclusion criteria, namely aged > 17 years, had a history of hypercholesterolemia and had used chemical drugs, traditional medicines, and a combination of chemical and traditional medicines. Meanwhile, the exclusion criteria are respondents who are not willing to take part in the research. The sample obtained was 80 people. The 24-question questionnaire has been tested for Pearson product moment validity with a p value <0,05, and a Cronbach's Alpha reliability value of 0,826. Data analysis uses percentage calculations, and the median value as a cut-off point. The perception assessment criteria are positive perception ≥ median value and negative perception ≤ median value. The results showed that 51,25% of respondents had a positive perception of the choice of chemical drugs, 60% of respondents had a positive perception of the choice of traditional drugs, and 53,75% of respondents had a positive perception of the choice of combination drugs (chemical and traditional) as well as a positive perception of selection of drugs, both chemical drugs and traditional drugs for hypercholesterolemia based on the Health Belief Model (HBM). In conclusion, the majority of Sukorejo people have a positive perception regarding the choice of chemical drugs and traditional medicines for hypercholesterolemia
IMPACT OF KIPI COMPANY DEVELOPMENT IN TANAH KUNING Atikah, Nur; Adi; al amrie, machmud
Jurnal Ekonomi Pembangunan dan Manajemen Vol 2 No 2 (2023): Jurnal Ekonomi Pembangunan dan Manajemen
Publisher : Fakultas Ekonomi Universitas Kaltara

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Abstract

The development of a company in an area can bring both positive and negative impacts. This document aims to provide an abstract on the potential impacts of building a company, specifically on land in the Kuning area. Firstly, it is important to note that land development for commercial purposes can lead to economic growth and job opportunities. The company itself may provide employment opportunities for the local community, as well as attract other businesses and investments to the area. This can lead to an increase in income levels and a boost in the overall economy of Kuning. However, the development of a company on land may also have negative consequences, particularly on the environment. The construction process may involve deforestation, pollution of air and water sources, and destruction of wildlife habitats. Additionally, the continuous operation of the company may lead to increased traffic, noise pollution, and waste production. Furthermore, the presence of a company on land can also have social impacts. It may cause displacement of local communities or changes in their way of life. This can result in cultural conflicts and loss of traditional practices. The influx of new employees and potential gentrification may also cause changes in the social dynamics of the area. In conclusion, while the development of a company on land in Kuning may bring economic benefits, it is important to carefully consider its potential impacts on the environment and society. Measures must be taken to mitigate any negative effects and ensure sustainable development for both the company and the community. This abstract serves as a brief overview of the possible consequences and highlights the importance of responsible decision-making when it comes to land development for commercial purposes. So, it is important for stakeholders to conduct thorough research and engage in open communication with local communities before proceeding with any project. By doing so, we can strive towards achieving balance between economic growth and environmental sustainability in Kuning.
The Cyclical Behavior of Capital Buffer of Indonesian Islamic and Conventional Banks Atikah, Nur; Susamto, Akhmad Akbar; Saleh, Samsubar; Abdic, Ficrat
International Journal of Islamic Economics and Finance (IJIEF) Vol 6, No 1 (2023): IJIEF Vol 6 (1), January 2023
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/ijief.v6i1.13154

Abstract

This paper is aimed at analyzing the cyclical behavior of capital buffer of Islamic and conventional banks in Indonesia. More specifically, this paper has three objectives. First, to test whether capital buffer in Indonesian banking industry as a whole is countercyclical or procyclical. Second, to test whether there is a difference in the level of capital buffer of Islamic banks as compared to the level of capital buffer of conventional banks. Third, to test whether there is a difference in the cyclicality of capital buffer of Islamic and conventional banks. The analysis in this paper is conducted using the standard dynamic system generalized method of moments (system GMM) regressions and includes a panel of 108 banks over the period between 2004 and 2019. From the results, it can be concluded that the capital buffer of Islamic and conventional banks in Indonesia is procyclical. From the results, it can also be concluded that no difference exists in the level of capital buffer of Islamic banks as compared to conventional banks and in the cyclicality of capital buffer in Islamic and conventional banking. If the countercyclical capital buffer is achieved, a policy measure to alter the cyclical behavior of capital buffer of Islamic and conventional banks in Indonesia therefore is a must. Such policy measure needs not to be specified for Islamic or conventional banking industry.