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ANALISA FUNGSI KARAKTERISTIK SEBAGAI PENCIRI DISTRIBUSI PELUANG Dwinata, Alona
Jurnal Gantang Vol 1 No 1 (2016): "Matematika, Permasalahan, dan Solusinya dalam Meningkatkan Kualitas Pembelajara
Publisher : Program Studi Pendidikan Matematika, Fakultas Keguruan dan Ilmu Pendidikan Universitas Maritim Raja Ali Haji

The Role of Technology in Supporting Students Thinking Process Level C3 in Learning of Set Operation through the Use of Swish Max4 Arinaldi, Arinaldi; Rahmatina, Desi; Dwinata, Alona
Jurnal Gantang Vol 3 No 1 (2018): Pembelajaran dan Media Pembelajaran Matematika yang Inovatif
Publisher : Program Studi Pendidikan Matematika, Fakultas Keguruan dan Ilmu Pendidikan Universitas Maritim Raja Ali Haji

Technological developments in the 21st century has been very rapid, forcing teachers to become more creative in terms of creating innovative learning media, interesting, and not left behind. By using visual media the teacher can provide certain visuals to the students in the learning process, which will be expected to help the students in thinking at C3 level. The background of the study is the low ability of students in working on the application of operations in the set in everyday life as well as visualize the operation of the set, based on a survey of researchers through interviews with teachers of SMP Negeri 11 Tanjungpinang. In this study the researcher uses multimedia-based visual media by the use of swish max4 software, to help students think up to level C3 or in the realm of applying especially on the material of the operation of the set and also can visualize the operation set in everyday life. Experiments were conducted in class VII.1 and class VII.2 at SMP Negeri 11 Tanjungpinang, obtaining posttest result of experiment class higher 76,24 compared to control class 66,92, It was proved that class given swish max4 media treatment can help students in Thinking up to C3 level or applying. Keywords: Swish max4, think level C3, Problem application of set operation

Analisis Kesalahan Siswa Dalam Pemecahan Problematika Kaidah Pencacahan Titik Sampel Dwinata, Alona; Ramadhona, Rezky
Jurnal Gantang Vol 3 No 2 (2018): September
Publisher : Program Studi Pendidikan Matematika, Fakultas Keguruan dan Ilmu Pendidikan Universitas Maritim Raja Ali Haji

Penelitian ini bertujuan untuk mengetahui jenis kesalahan siswa dalam menyelesaikan kaidah pencacahan titik sampel. Metode penelitian menggunakan pendekatan deskriptif kualitatif. Subjek penelitian adalah siswa kelas XII SMA N 1 Bintan Timur, Kabupaten Bintan, Provinsi Kepulauan Riau. Tahapan pengumpulan data dilakukan dengan tes dan wawancara. Teknik analisis data dilakukan dengan menyiapkan dan mengorganisir data kesalahan siswa untuk dianalisis. Selanjutnya proses eksplorasi dan pengkodean data untuk membangun deskripsi dan jenis kesalahan. Proses dilanjutkan dengan representasi dan interpretasi temuan jenis kesalahan siswa serta memvalidasi keakuratan temuan. Berdasarkan hasil penelitian disimpulkan bahwa jenis kesalahan mayoritas dialami siswa adalah reading dengan persentase maksimum kesalahan 66,7%, diikuti kesalahan comprehension dengan persentase maksimum kesalahan 64%. Kesalahan reading dan comprehension menunjukkan rendahnya kemampuan berpikir siswa dalam memahami permasalahan pada soal cerita matematis. Selanjutnya kesalahan transformation dengan persentase maksimum kesalahan 59,1% dan diikuti kesalahan process skill dengan persentase maksimum kesalahan 52,2%. Jenis kesalahan transformation dan process skill memperlihatkan kurangnya kemampuan kognitif siswa dalam memahami konsep untuk setiap kaidah pencacahan titik sampel yang ditemukan dalam soal. Jenis kesalahan yang paling sedikit dialami siswa adalah encoding dengan persentase maksimum kesalahan hanya 18,2%. Encoding menunjukkan ketelitian siswa menyelesaikan operasi matematika secara tertulis dengan benar berdasarkan konsep matematis yang digunakan dalam menyelesaikan soal. Kata kunci: analisis kesalahan; Newmanâs error analysis; kaidah pencacahan titik sampel This study aims at recognizing the type of studentsâ error on counting problem in sample space. This research uses qualitative descriptive method. The subjects of this study were students of class XII SMA N 1 Bintan Timur, Bintan Regency, Kepulauan Riau Province. Data collection was done by tests and interviews. Technique of data analysis was performed by preparing and organizing the data to be analyzed. Exploration and data coding were done for building description and types of errors. This process was followed by the representation and interpretation of findings about the type of student error as well as validating the accuracy of findings. The result of this research concluded based on maximum percentage of error. The first is reading with 66,7%, the second is comprehension with 64%. These two types of errors indicate low order thinking of student in understanding the problem of the questions. The third is transformation with 59,1% and then the fourth is process skill with 52,2%. Both types of studentâs error showed lack cognitive ability of students to understand the rule of concept. Finally encoding with 18,2%. Encoding was concerned to show the accuracy of students working on mathematical operation in written form correctly based on the mathematical concepts used to solve the problems. Keywords: error analysis; Newmanâs error analysis; counting in sample space.

Analisis Partisipasi Politik Masyarakat Kelurahan Tanjungpinang Kota Dalam Pemilihan Gubernur Provinsi Kepulauan Riau Tahun 2015 dwi putri, nur aslamaturrahmah; Dwinata, Alona
Kemudi Vol 1 No 2 (2017): KEMUDI: Jurnal Ilmu Pemerintahan
Publisher : Program Studi Ilmu Pemerintahan Fakultas Ilmu Sosial dan Ilmu Politik Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (723.067 KB)

Partisipasi politik adalah merupakan salah satu wujud dari sebuah proses demokrasi. Hal ini dapat kita lihat di dalam pelaksanaan pemilihan umum seperti pemilihan umum kepala daerah. Sukses tidaknya pelaksanaan dari sebuah demokrasi dapat diukur dari tinggi rendahnya partisipasi politik dari masyarakat. Namun belakangan ini partisipasi dari masyarakat cenderung turun dapat dilihat dari angka golput yang tinggi seperti yang terjadi pada pemilihan umum kepala daerah Kota Tanjungpinang di Tahun 2012. Tepatnya di Kelurahan Tanjungpinang Kota yang angka golputnya tertinggi se Kota Tanjungpinang yaitu mencapai 51,4%. Ternyata hal yang terjadi pada pemilu walikota tahun 2012 lalu juga terjadi pada pemilu gubernur kepulauan riau tahun 2015 lalu yaitu 38,3%. Perubahan sistem pemilihan yang tadinya dilaksanakan serentak dan sekarang serentak ternyata tidak mempengaruhi tingganya angka golput. Untuk itu dalam tulisan ini akan dibahas factor-faktor apa yang mempengaruhi rendahnya partisipasi politik masyarakat khususnya masyarakat kelurahan Tanjungpinang kota.

A Combination of Generalized Linear Mixed Model and LASSO Methods for Estimating Number of Patients Covid 19 in the Intensive Care Units Dwinata, Alona; Notodiputro, Khairil Anwar; Sartono, Bagus
CAUCHY Vol 7, No 1 (2021): CAUCHY: Jurnal Matematika Murni dan Aplikasi
Publisher : Mathematics Department, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/ca.v7i1.11575

Generalized linear mixed models (GLMM) combined with the L1 penalty (Least Absolute Shrinkage and Selection Operator/LASSO) is called LASSO GLMM. LASSO GLMM reduces overfitting and selects predictor variables in modeling. The aim of this study is to evaluate the model's performance for predicting Covid-19 patients with certain congenital disease that require ICU based on the results of blood tests laboratory and patientâ€™s vital signs. This study used binary response variables, 1 if the patient was admitted to the ICU and 0 if the patient was not admitted to the ICU. The fixed effect predictor variables are the results of blood tests laboratory and patientâ€™s vital signs. The random effect predictor variable is patient's congenital disease. The result showed that the average of accuracy and AUC from LASSO GLMM is more than the average of accuracy and AUC from LASSO GLM by using 5% level of significance. Respiratory rate and Lactate show a significance effect to predict the ICU needs of Covid-19 patients. The random effects patient's congenital disease has significance effect at 5% level of significance. It means that the ICU needs for Covid-19 patients varies among patient's congenital disease. We can conclude that GLMM LASSO with the random effect of patientâ€™s congenital diseases has better modeling performance to predict the ICU needs of Covid-19 patients based on the results of blood tests laboratory and patientâ€™s vital signs. The results of this modeling can quickly detect Covid-19 patients who need the ICU and can help medical staff use ICU resources optimally

ANALISA KESALAHAN KONSEP PECAHAN PADA SISWA KELAS VII A SMP NEGERI 13 SATU ATAP TANJUNGPINANG Alifah Yulianingsih; Febrian Febrian; Alona Dwinata
Mosharafa: Jurnal Pendidikan Matematika Vol 7, No 2 (2018)
Publisher : Institut Pendidikan Indonesia

AbstrakStudi ini bertujuan untuk mengetahui kesalahan konsep pecahan pada siswa dengan menganalisa lebih dalam kesalahan yang siswa lakukan saat mengerjakan beberapa soal yang diberikan, sehingga studi ini mengambil desain studi kasus, dengan mengambil subjek studi siswa kelas VII A SMP Negeri 13 Satu Atap Tanjungpinang yang berjumlah 30 orang. Instrumen yang digunakan adalah tes dan wawancara, tes yang digunakan merupakan tes jawaban singkat dan tes uraian yang berjumlah 14 soal dengan indikator soal yang berbeda-beda, untuk membantu peneliti mengetahui lebih dalam cara berfikir siswa saat mengerjakan tes maka digunakan instrumen wawancara terstruktur terbuka dengan bantuan alat perekam suara (audio recorder). Hasil analisa yang dilakukan ditemukan bahwa siswa melakukan kesalahan konsep dihampir semua soal dengan persentasi kesalahan di soal 1 sebesar 62%, soal 3 sebesar 80%, soal 4 sebesar 25%, soal 5 sebesar 50%, soal 6a dan 6c sebesar 83%, soal 6b, 6d, 6e sebesar 100%, dan soal cerita di soal 8 dan 9 sebesar 86% dan 7%.Kata kunci: kesalahan konsep, pecahan, SMPN 13 satap TPI AbstractThis study aims to find out the fraction of the concept of fractions in students by analyzing more in the mistakes that students do while working on some given questions, so this study takes the case study design, by taking the subject of the study of class VII A SMP Negeri 13 Satu Atap Tanjungpinang which amounted to 30 person. The instruments used were tests and interviews, the test used was a short answer test and a 14 description test with different problem indicators, to help researchers know more in the way students think when doing the test then used an open structured interview instrument with the help audio recorder. The result of the analysis found that the students did the mistake of the concept in almost all the problems with the percentage of error in problem 1 of 62%, the problem 3 by 80%, the problem of 4 by 25%, about 5 by 50%, about 6a and 6c by 83% 6b, 6d, 6e by 100%, and the story in problem 8 and 9 is 86% and 7%Keywords: concept error, fractional, SMPN 13 satap TPI

ANALISA FUNGSI KARAKTERISTIK SEBAGAI PENCIRI DISTRIBUSI PELUANG Alona Dwinata
Jurnal Gantang Vol 1 No 1 (2016): "Matematika, Permasalahan, dan Solusinya dalam Meningkatkan Kualitas Pembelajaran
Publisher : Universitas Maritim Raja Ali Haji

Fungsi karakteristik dari sebuah peubah acak mempunyai peranan penting dalam mengkaji kekonvergenan suatu fungsi distribusi. Salah satu teorema penting dalam kekonvergenan suatu fungsi distribusi adalah Teorema Limit Pusat Le’vy. Teorema Limit Pusat Le`vy menjelaskan bahwa jumlah dari peubah acak yang saling bebas, berdistribusi identik, dan mempunyai variansi akan mendekati distribusi Normal untuk n yang cukup besar. Jika (?n) merupakan barisan fungsi karakteristik dari barisan fungsi distribusi (Fn) yang saling bebas dan berdistribusi identik dan ? merupakan fungsi karakteristik dari fungsi distribusi F, maka apakah jika barisan (Fn) konvergen ke F akan diikuti kekonvergenan (?n) ke ??. Berdasarkan kajian pustaka diperoleh jawaban bahwa kekonvergenan barisan fungsi distribusi (Fn) ke fungsi distribusi F akan diikuti kekonvergenan (?n) ke ? dengan syarat : FnF syarat perlu ? kontinu pada t = 0 syarat cukup. Kata Kunci : Fungsi distribusi, Fungsi Karakteristik, Kekonvergenan Characteristics function from a random variable has a crucial role in examining the convergence of a particular distribution function. One of important theorems in convergence of a distribution function is theorem of Le’vy’s central limit. It implies that sum of some independently random variables, identically distributed, and having variance, will approach normal distribution for great enough value of n. Given as series of characteristics function from series of distribution function which is independent each other and identically distributed and as characteristics function of distribution function F, then if given series convergent to F, will it be implied by convergence of to ?. Based on literature study, it is obtained that the convergence of series of distribution function to distribution function F will be followed by the convergence of to under these following conditions: FnF necessary condition ? continue on t = 0 sufficient condition. Keywords: distribution function, characteristics function, convergence

Peranan Teknologi dalam Mendukung Proses Berpikir Level C3 Siswa pada Materi Operasi Himpunan melalui Penggunaan Swish Max4 Arinaldi Arinaldi; Desi Rahmatina; Alona Dwinata
Jurnal Gantang Vol 3 No 1 (2018): Pembelajaran dan Media Pembelajaran Matematika yang Inovatif
Publisher : Universitas Maritim Raja Ali Haji

Technological developments in the 21st century has been very rapid, forcing teachers to become more creative in terms of creating innovative learning media, interesting, and not left behind. By using visual media the teacher can provide certain visuals to the students in the learning process, which will be expected to help the students in thinking at C3 level. The background of the study is the low ability of students in working on the application of operations in the set in everyday life as well as visualize the operation of the set, based on a survey of researchers through interviews with teachers of SMP Negeri 11 Tanjungpinang. In this study the researcher uses multimedia-based visual media by the use of swish max4 software, to help students think up to level C3 or in the realm of applying especially on the material of the operation of the set and also can visualize the operation set in everyday life. Experiments were conducted in class VII.1 and class VII.2 at SMP Negeri 11 Tanjungpinang, obtaining posttest result of experiment class higher 76,24 compared to control class 66,92, It was proved that class given swish max4 media treatment can help students in Thinking up to C3 level or applying. Keywords: Swish max4, think level C3, Problem application of set operation

Analisis Kesalahan Siswa Dalam Pemecahan Problematika Kaidah Pencacahan Titik Sampel Alona Dwinata; Rezky Ramadhona
Jurnal Gantang Vol 3 No 2 (2018): September
Publisher : Universitas Maritim Raja Ali Haji

Penelitian ini bertujuan untuk mengetahui jenis kesalahan siswa dalam menyelesaikan kaidah pencacahan titik sampel. Metode penelitian menggunakan pendekatan deskriptif kualitatif. Subjek penelitian adalah siswa kelas XII SMA N 1 Bintan Timur, Kabupaten Bintan, Provinsi Kepulauan Riau. Tahapan pengumpulan data dilakukan dengan tes dan wawancara. Teknik analisis data dilakukan dengan menyiapkan dan mengorganisir data kesalahan siswa untuk dianalisis. Selanjutnya proses eksplorasi dan pengkodean data untuk membangun deskripsi dan jenis kesalahan. Proses dilanjutkan dengan representasi dan interpretasi temuan jenis kesalahan siswa serta memvalidasi keakuratan temuan. Berdasarkan hasil penelitian disimpulkan bahwa jenis kesalahan mayoritas dialami siswa adalah reading dengan persentase maksimum kesalahan 66,7%, diikuti kesalahan comprehension dengan persentase maksimum kesalahan 64%. Kesalahan reading dan comprehension menunjukkan rendahnya kemampuan berpikir siswa dalam memahami permasalahan pada soal cerita matematis. Selanjutnya kesalahan transformation dengan persentase maksimum kesalahan 59,1% dan diikuti kesalahan process skill dengan persentase maksimum kesalahan 52,2%. Jenis kesalahan transformation dan process skill memperlihatkan kurangnya kemampuan kognitif siswa dalam memahami konsep untuk setiap kaidah pencacahan titik sampel yang ditemukan dalam soal. Jenis kesalahan yang paling sedikit dialami siswa adalah encoding dengan persentase maksimum kesalahan hanya 18,2%. Encoding menunjukkan ketelitian siswa menyelesaikan operasi matematika secara tertulis dengan benar berdasarkan konsep matematis yang digunakan dalam menyelesaikan soal. Kata kunci: analisis kesalahan; Newmanâ€™s error analysis; kaidah pencacahan titik sampel This study aims at recognizing the type of studentsâ€™ error on counting problem in sample space. This research uses qualitative descriptive method. The subjects of this study were students of class XII SMA N 1 Bintan Timur, Bintan Regency, Kepulauan Riau Province. Data collection was done by tests and interviews. Technique of data analysis was performed by preparing and organizing the data to be analyzed. Exploration and data coding were done for building description and types of errors. This process was followed by the representation and interpretation of findings about the type of student error as well as validating the accuracy of findings. The result of this research concluded based on maximum percentage of error. The first is reading with 66,7%, the second is comprehension with 64%. These two types of errors indicate low order thinking of student in understanding the problem of the questions. The third is transformation with 59,1% and then the fourth is process skill with 52,2%. Both types of studentâ€™s error showed lack cognitive ability of students to understand the rule of concept. Finally encoding with 18,2%. Encoding was concerned to show the accuracy of students working on mathematical operation in written form correctly based on the mathematical concepts used to solve the problems. Keywords: error analysis; Newmanâ€™s error analysis; counting in sample space.

Pengembangan Lembar Kerja Peserta Didik Berbasis Realistic Mathematics Education dengan Konteks Kemaritiman untuk Peserta Didik SMA Kelas XI Maimunah; Nur Izzati; Alona Dwinata
Jurnal Gantang Vol 4 No 2 (2019): Jurnal Gantang
Publisher : Universitas Maritim Raja Ali Haji

The lack of use of teaching materials that are able to help learners to understand mathematics learning in schools causes the achievement of students' mathematical skills are still in the low category. The aims of this study is to develop a valid, practical and effective LKPD based on RME approach by using maritime context. This research is a type of Research and Development (R&D) research with a limited ADDIE development model that are Analysis, Design, and Development (ADD) stage. Data in the study were collected by the test and questionnaire methods. The research instruments used were expert validation sheets, student questionnaire response sheets, and test sheets. Data was analyzed with descriptive analysis to measure the validity of LKPD, Rasch modeling to measure the practicality of LKPD, and compare individual and classical minimum completeness criteria from students' post-test results to measure the effectiveness of LKPD. The results showed that LKPD based on RME fulfilled valid criteria with the dominance of the assessment in the good category, practical criteria with the dominant response of students in the practical category, and effective with a percentage of completeness of 87%.

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