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All Journal Wacana, Jurnal Sosial dan Humaniora Pi: Mathematics Education Journal Desimal: Jurnal Matematika Jurnal SOLMA SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan JURNAL PENDIDIKAN TAMBUSAI JIKA: Jurnal Ilmu Keuangan dan Perbankan ComTech: Computer, Mathematics and Engineering Applications Jurnal Mantik Value: Jurnal Manajemen dan Akuntansi Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Jurnal Diferensial Jurnal Media Akuakultur Indonesia Indo-MathEdu Intellectuals Journal Jurnal Pijar MIPA Jurnal Sintak Mathematical Sciences and Applications Journal
Widya Reza
Institut Teknologi Batam
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Estimator’s Property of Spatially Corrected Blundell-Bond on Dynamic of Spatial Durbin Panel Model Using Monte Carlo Simulation reza, widya; Pramoedyo, Henny; Fitriani, Rahma
ComTech: Computer, Mathematics and Engineering Applications Vol 10, No 2 (2019): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v10i2.5665

Abstract

This research discussed the properties of Spatially Corrected Blundell-Bond (SCBB) in overcoming the problem of endogeneity and spatial dependence that occur in dynamic Spatial Durbin Model (SDM) panels. The properties of the estimator tested were unbiased and normality. The properties test of the estimator was carried out using the Monte Carlo simulation approach. From the results of this research, it finds that the SCBB estimator has unbiased properties and follows a normal distribution. Based on the property of the estimator obtained, the SCBB parameter estimation method in the dynamic SDM panel model works well in overcoming endogeneity and spatial dependence problems.
Analyze breaking palm oil dormancy through chemical processes using multivariate analysis of variance Widya Reza; Vitri Aprilla Handayani; Eko Sulistyono
Jurnal Pijar Mipa Vol. 17 No. 3 (2022): May 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (213.341 KB) | DOI: 10.29303/jpm.v17i3.3449

Abstract

Palm oil is a dormant plant. The main cause of oil palm seed dormancy is the hard and thick seed coat or shell, inhibiting the effective absorption of water and gases. The presence of a seed coat barrier causes the germination process of oil palm seeds to be hampered. This study aims to determine the effect of chemical treatment on breaking palm oil dormancy by immersion in a solution of strong acids, namely H2SO4, KNO3, and HCl. This study used a completely random design (CRD) with three treatments, four observations, and five replications. The results of the following study were analyzed using MANOVA with the parameters observed were germination rate, germination rate, seedling height, and most extended root length. Based on the analysis results, it was found that immersion with a solution of a strong acid, namely H2SO4, KNO3, and HCl, had different effects on breaking palm oil dormancy. The highest average germination rate was through immersion with HCl, which produced an average of 65.24. The highest average germination was through immersion in H2SO4 with an average of 8.52. In contrast, the average seedling height and most extended root length were soaked in HCl with an average of 35.28, and 15, respectively. Based on the results obtained, the best chemical treatment for breaking palm oil dormancy is through soaking with HCl.
Estimator’s Property of Spatially Corrected Blundell-Bond on Dynamic of Spatial Durbin Panel Model Using Monte Carlo Simulation widya reza; Henny Pramoedyo; Rahma Fitriani
ComTech: Computer, Mathematics and Engineering Applications Vol. 10 No. 2 (2019): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v10i2.5665

Abstract

This research discussed the properties of Spatially Corrected Blundell-Bond (SCBB) in overcoming the problem of endogeneity and spatial dependence that occur in dynamic Spatial Durbin Model (SDM) panels. The properties of the estimator tested were unbiased and normality. The properties test of the estimator was carried out using the Monte Carlo simulation approach. From the results of this research, it finds that the SCBB estimator has unbiased properties and follows a normal distribution. Based on the property of the estimator obtained, the SCBB parameter estimation method in the dynamic SDM panel model works well in overcoming endogeneity and spatial dependence problems.
PENGARUH PENGGUNAAN APLIKASI GEOGEBRA TERHADAP MINAT BELAJAR SISWA PADA PEMBELAJARAN MATEMATIKA Faradiba Jabnabillah; Widya Reza
Pi: Mathematics Education Journal Vol. 5 No. 2 (2022): Oktober
Publisher : Program Studi Pendidikan Matematika Universitas PGRI Kanjuruhan Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21067/pmej.v5i2.7468

Abstract

Pada dunia pendidikan saat ini, guru dituntut untuk menggunakan berbagai macam media dalam proses belajar mengajar di kelas. Adanya media dapat dijadikan alat untuk membangkitkan minat belajar siswa. Salah satu media pembelajaran yang sering digunakan adalah Geogebra. Aplikasi ini dikembangkan untuk proses belajar mengajar matematika di sekolah dengan beberapa kegunaan yaitu: sebagai media pembelajaran matematika, alat bantu membuat bahan ajar matematika dan sebagai media dalam menyelesaikan soal matematika. Adapun tujuan penelitian ini adalah untuk mendeskripsikan pengaruh penggunaan aplikasi GeoGebra terhadap minat belajar siswa dalam pembelajaran matematika. Penelitian ini dilakukan di SMK Putra Jaya School Batam pada kelas X TKJ dengan jumlah siswa 20 orang. Penelitian ini menggunakan pendekatan kuantitatif deskriptif. Teknik pengumpulan data yang digunakan adalah metode observasi dan kuesioner. Teknik analisis data menggunakan metode uji t, analisis regresi sederhana dan koefisien determinasi. Hasil pada penelitian ini menjelaskan bahwa respon siswa dalam menggunakan aplikasi GeoGebra berpengaruh terhadap minat belajar secara signifikan. Sementara itu, pengaruh dari variabel respon siswa terhadap minat belajar bernilai positif yang artinya jika respon siswa meningkat maka minat belajar juga akan mengalami peningkatan. Sedangkan pada koefisien determinasi menunjukkan hasil bahwa respon siswa memiliki proporsi pengaruh terhadap minat belajar sebesar 47,5% pada pembelajaran matematika.
Structural equation modeling (SEM) analysis based on UTAUT2 theory on e-commerce adoption Widya Reza; Faradiba Jabnabillah
Jurnal Pijar Mipa Vol. 18 No. 2 (2023): March 2023
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v18i2.4804

Abstract

E-commerce adoption with the UTAUT 2 model is a complex and multidimensional issue that connects multiple dimensions. A statistical method that can explain the relationship between one latent variable and another variable is Structural Equation Modeling (SEM). This study aims to create a structural model of e-commerce adoption using SEM based on indicators in the UTAUT2 theory. The data used in this study is primary data obtained through a survey of MSME actors in Batam City using a questionnaire with the purposive sampling method. The sample used was 200 MSMEs. The analysis results show that the  value on the Behavioral Intention variable was 88.6%, and the Use Behavior variable was 76.8%.  value of 97.4% indicates that the exogenous latent variable strongly affects the endogenous latent variable. The goodness of the fit value suggests that the SEM model in this study can explain empirical data or field data by 83%. The hypothesis testing results are that Behavioral intention significantly affects effort expectancy, facilitating condition, performance expectancy, and price value. Related to indirect effect, variables that affect user behavior through behavioral intention are significantly the variables of effort expectancy, facilitating condition, habit, performance expectancy, and price value.
Pelatihan Penggunaan Aplikasi GeoGebra Sebagai Media Pembelajaran Interaktif Pada Pembelajaran Matematika Widya Reza; Faradiba Jabnabillah; Sabariansyah
Jurnal SOLMA Vol. 12 No. 1 (2023)
Publisher : Universitas Muhammadiyah Prof. DR. Hamka (UHAMKA Press)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/solma.v12i1.10615

Abstract

Background: Pada era digital media pembelajaran komputer dapat diaplikasikan dalam pembelajaran matematika salah satunya GeoGebra. Pemanfaatan aplikasi GeoGebra memberikan beberapa keuntungan diantaranya dapat menghasilkan gambar–gambar berupa grafik dengan cepat dan teliti, dan memberikan pengalaman visual yang lebih jelas. Kegiatan ini bertujuan mendeskripsikan respon dan minat belajar siswa terhadap penggunaan GeoGebra pada pembelajaran matematika Metode: Penelitian menggunakan metode deskriptif kuantitatif dengan pengumpulan data melalui observasi dan kuesioner. Responden merupakan siswa dari SMK Putra Jaya School Batam kelas X Jurusan Teknik Komputer Jaringan sebanyak 20 orang. Kegiatan ini dilakukan dengan 3 tahapan yaitu tahap persiapan, pelaksanaan dan tahap akhir. Hasil: Meningkatnya antusias dan minat belajar siswa terhadap pelajaran matematika khususnya Trigonometri. Hal ini dapat dilihat berdasarkan nilai persentase respon siswa adalah sebesar 82% berada pada kategori sangat baik dan pesrsentase minat belajar siswa yaitu sebesar 80% berada pada kategori baik. Kesimpulan: Siswa lebih cepat memahami materi tersebut dengan menggunakan aplikasi GeoGebra. Dengan terlaksananya kegiatan pelatihan aplikasi GeoGebra ini diharapkan siswa mampu memahami materi matematika dengan baik, dan diharapkan guru dapat memanfaatkan aplikasi GeoGebra dalam setiap proses pembelajaran matematika untuk meningkatkan minat dan pemahaman siswa pada mata pelajaran matematika.
Comparison of the accuracy of seasonal data prediction values using SARIMA and winter exponential smoothing on the number of ship passengers in Batam City Widya Reza
Jurnal Pijar Mipa Vol. 18 No. 4 (2023): July 2023
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v18i4.5469

Abstract

Sea transportation is one of the keys to the success of the tourism industry in a region. One of the problems faced in sea transportation is the increase in the number of passengers that is not balanced with the number of ships available. An accurate prediction model is very important in forecasting the number of passengers of a ship in order to prepare the number of ships according to the number of passengers. This study aims to compare the accuracy of prediction models on the number of ship passengers in Batam City whose data is fluctuating and contains seasonal patterns. In this study, secondary data was used in the form of the number of ship passengers in Batam City from January 2014 to December 2022. The methods used are SARIMA and Winter Exponential Smoothing. The results of this study show that the selected SARIMA model in forecasting the number of passengers in Batam City is SARIMA is SARIMA (0,1,1)(0,1,1)12 with an MSD value of 0.0000021. In contrast, the selected Winter Exponential Smoothing model is Winter Exponential Smoothing at alpha = 0.9, beta = 0.1, and delta = 0.1 with an MSD value of 0.00000. Based on these two models, the most accurate prediction model with the lowest MSD value in forecasting the number of ship passengers in Batam City is the Winter Exponential Smoothing model with values alpha = 0.9, beta = 0.1, and delta = 0.1.
Moderation effect of individualism/collectivism, uncertainty avoidance and long term orientation on adoption e-commerce in batam city SMEs: development of the UTAUT 2 Widya Reza; Vitri Aprilla Handayani
Jurnal Mantik Vol. 7 No. 2 (2023): Agustus: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mantik.v7i2.3937

Abstract

Batam City MSME actors still encounter several obstacles in running their business, such as determining market share, operational costs, marketing outreach, and customer loyalty. To overcome this problem, MSME players in Batam City are required to be more creative in utilizing technology such as e-commerce. This study aims to analyze the factors that influence the adoption of e-commerce in MSMEs in Batam City using the UTAUT 2 model by considering cultural factors. The data used in this study is primary data obtained through a survey of Batam City SMEs using a questionnaire with a purposive sampling method. The sample used was 250 MSME actors. The analytical method used in this study is Structural Equation Modeling (SEM). Based on the results of the analysis, it was found that facilitating conditions, habits, and behavioral intentions directly affect the use behavior variable. Cultural factors of individualism/collectivism, uncertainty avoidance, and long-term orientation also managed to moderate the influence of behavioral intention variables on user behavior.
Edukasi Perencanaan Dana Pensiun secara Mandiri Bagi Karyawan Swasta SMK Terpadu Putra Jaya Batam Widya Reza; Andini Setyo Anggraeni; Sabarinsyah
Jurnal SOLMA Vol. 12 No. 2 (2023)
Publisher : Universitas Muhammadiyah Prof. DR. Hamka (UHAMKA Press)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/solma.v12i2.11280

Abstract

Background: One of the phenomena surrounding Indonesian society is the lack of awareness of pension fund planning, so there are often financial problems in retirement. This activity aims to educate the public about the importance of independent pension fund planning, especially private employees. Method: This activity was carried out at SMK Terpadu Putra Jaya Batam with 25 participants. This activity lasted for six weeks, with the intervention providing education on pension fund planning and calculating pension fund needs independently. This series of activities consists of a pretest, material description, discussion session, and post-test. Results: This activity increased participants' understanding of the importance of independent pension fund planning for private employees. The pretest results showed that participants who understood and were interested in planning pension funds only amounted to 5%. The post-test results showed that 98% of participants understood and intended to prepare pension funds. Participants also learned about calculating the time value of money for pension funds and choosing suitable investments. Conclusion: The participants were very enthusiastic about participating in this activity which was shown by an increased understanding and interest in planning pension funds independently. Even though they already have high knowledge, private employees should also be able to control themselves to have good retirement fund planning.
Structural Equation Modeling Pada Adopsi Sistem Informasi Akuntansi Berbasis E-Commerce Menggunakan UTAUT2 Widya Reza; Faradiba Jabnabillah; Andini Setyo Anggraeni
Value : Jurnal Manajemen dan Akuntansi Vol. 18 No. 1 (2023): Januari - April 2023
Publisher : Prodi Ilmu Manajemen, Fakultas Ekonomi Universitas Muhammadiyah Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32534/jv.v18i1.3886

Abstract

Batam City MSME players still encounter obstacles in the adoption of e-commerce-based Accounting Information Systems (AIS). This study aims to analyze the factors that influence the adoption of an e-commerce-based accounting information system for MSMEs in Batam City using the UTAUT2 model by considering cultural factors. The data used in this study is primary data obtained through a survey of MSME actors in Batam City using a questionnaire with the purposive sampling method. The sample used was 150 MSME actors. Hypothesis testing is carried out using Structural Equation Modeling (SEM) using SmartPLS. The results of the study proved that facilitating conditions, habits and behavioural intentions affect the use behavior variable directly. Cultural factors of individualism collectivism, uncertainty avoidance and long term orientation also succeeded in moderating the influence of behavioural intention variables on use behavior. The results of this study imply that the government can consider cultural factors in developing a strategy to increase the adoption of MSME e-commerce accounting information systems in Batam City to improve business performance. Keywords: SEM, AIS, E-commerce, UTAUT2
Co-Authors Afriza Media Andini Setyo Anggareni Anggraeni, Andini Setyo candra, joni eka Dia Cahya Wati Dwiakila Ramadhan , Achiles Eko Sulistyono Sulistyono Emra, Raysa Rizkika Ramadhani Fadilah, Alya Febriana, Ramanda Febrya Christin Handayani Buan Fidya Farasalsabila Fitria, Yanti Handayani*, Vitri Aprilla Handayani, Vitri Aprilla Handayani, Vitri Aprilla Hazimah, Hazimah Henny Pramoedyo Henny Pramoedyo Henny Pramoedyo Ikhlas Ul Aqmal Islamiati, Dian Jabnabillah, Faradiba Kurnia, Okki Masniladevi, Masniladevi Nabillah, Faradiba Nasution, Nadia Widari Puri Rahayu Nengsi Rahma Fitriani Rahma Fitriani Rahma Fitriani Rusmadi, Garry Sabariansyah Sabarinsyah, Sabarinsyah Sanipar Simatupang, Devid Trinaldo Siti Nurmardia Abdussamad Vitri Aprilla Handayani Wahyu Aranski, Alvendo Yesi Anita Zofar Agluis Banunaek Zuchri Abdussamad