PERANGKAT LUNAK DETEKSI UANG PALSU BERBASIS LVQ MEMANFAATKAN ULTRAVIOLET

This research is aimed to colaborate digital image processing and neural network using Linear Vector Quantization (LVQ) method to make a money counterfeit system detection. The input image of the system is the dancer object image of Rp. 50.000,- money fluorescend by ultraviolet light. The acquisition data was taken from conventional banks. The LVQ method was used to recognize whether the money being recognized is conterfeit or not. The coding was carried out using visual programme language. The size of the dancer recognized object was in 90x114 px, and its RGB was extracted. The experimental results show that the system has an accuracy 100% of detecting 20 real test case data, as well as detecting 14 simulated test case data. The simulated case data was generated by varying the brightness of the data image. The real test case data contains of 10 counterfeit money and 10 original money. The simulated case data contains of 3 original money and 11 counterfeit money. Keywords: detection system, counterfeit money, neural network, LVQ, digital image processin

PERANGKAT LUNAK DETEKSI UANG PALSU BERBASIS LVQ MEMANFAATKAN ULTRAVIOLET

ABSTRAK   Penelitian ini bertujuan untuk mengaplikasikan pemrosesan citra digital dan jaringan syaraf metode LVQ guna menghasilkan sebuah perangkat lunak deteksi uang palsu. Citra masukan berupa citra penari yang muncul dari uang kertas limapuluh ribuan rupiah akibat pendaran cahaya lampu ultraviolet. Metode penelitian meliputi studi literatur yang berkompeten, metode pengumpulan data citra uang palsu dari bank-bank konvensional, dan implementasi pengkodean menggunakan bahasa pemrograman Visual. Citra ciri bergambar penari berukuran 90x114 piksel dilekstraks nilai RGB-nya. Nilai RGB ini menjadi variabel masukan bagi LVQ. Hasil yang diperoleh dari penelitian berupa perangkat lunak deteksi uang palsu berbasis LVQ, dengan keberhasilan pendeteksian hingga 100% baik pada 20 buah data citra uji iluminasi maupun 14 buah simulasi data citra uji kecerahan. Data citra uji iluminasi terdiri dari 10 citra uang palsu dan 10 citra uang asli. Data citra uji kecerahan terdiri dari 3 citra uang asli dan 11 citra uang palsu. ABSTRACT This research is aimed to colaborate digital image processing and neural network using Linear Vector Quantization (LVQ) method to make a money counterfeit system detection. The input image of the system is the dancer object image of Rp. 50.000,- money fluorescend by ultraviolet light. The acquisition data was taken from conventional banks. The LVQ method was used to recognize whether the money being recognized is conterfeit or not. The coding was carried out using visual programme language. The size of the dancer recognized object  was in  90x114 px, and its RGB was extracted. The experimental results show that the system has an accuracy 100% of detecting 20 real test case data, as well as detecting 14 simulated test case data. The simulated case data was generated by varying the brightness of the data image. The real test case data contains of 10 counterfeit money and 10 original money. The simulated case data contains of 3 original money and 11 counterfeit money. Keywords:      detection system, counterfeit money, neural network, LVQ, digital image processin

ANALISIS MISKONSEPSI GERAK MELINGKAR PADA BUKU SEKOLAH ELEKTRONIK (BSE)FISIKA SMA KELAS X SEMESTER I

ABSTRACT Nurul Fitrianingrum. THE ANALYSIS OF CIRCULAR MOTION MISCONCEPTION IN PHYSICS ELECTRONIC BOOKS OF SENIOR HIGH SCHOOL FIRST GRADE AT FIRST SEMESTER. Thesis, Teacher Training and Education Faculty Sebelas Maret University. January 2013. The research has purpose to investigate the books of physics, such as (1) the existance of misconseptions, (2) the percentage of misconceptions, and (3) other identification of aspects which has potential to cause misconception in circular motion particularly. These books are: (a) Tri Widodo, Fisika untuk SMA dan MA Kelas X, (b) Dudi Indrajit, Mudah dan Aktif Belajar Fisika untuk Kelas X Sekolah Menengah Atas/Madrasah Aliyah, and (c) Setya Nurachmandani, Fisika 1 untuk SMA/MA Kelas X first edition 2009 published by Pusat Perbukuan Kemendikbud. The research is a descriptive qualitative research. The object of this research is the circular motion’s concepts. The techniques of data collection in this research were done by literature and interview the expertise to get the true concept. The techniques of data validation was persistence or constancy of observation. Data analysis technique that is used in this research is a qualitative descriptive analysis consist of four stages; data collection, data reduction, data display, and conclusions drawing and verifying. Based on data analysis it can be concluded that: (1) there are no misconceptions, (2) the percentage of misconceptions are 0%, and (3) other descriptions identification are: correct concept, the concept does not exist, the picture correction, writing notation correction, writing unit corrections, writing formulation correction, writing result calculation correction, and correction for writing explanation formula in correction the concept of circular motion in the three electronic books. Keyword: misconception, physics elektronic books, circular motion

Waste recycling being Biomassa and high economic potency handmade to solve the waste problematic and to solve the poverty

Waste recycle has done for TPA Winong Boyolali at Winong Village. Organic waste was recycled being biomassa and the anorganic waste (plastic) was recycled to be unique bags handmade. Some of waste were made into products which has high economic in order to increase the income for Winong village society. Methodology of the program has 3 steps, First, socialization ofdisadvantages of waste and the economics potency. Second, biomassa and bags handmade training. Third, supervising for the production and then the marketing penetration indeed. The products from the program were lifeskills making biomassa and bags handmade. Biomassa center have made the biomassa 35 kg per week succesfully, and trashion center (bags handmade) have made 10 kinds of bags i.e. sandals, small bags and medium bags. The products were sold by consignment system in the stores. Keywords: recycle, waste, handmade, biomassa, winon

PENGEMBANGAN BAHAN AJAR FISIKA DASAR I BERVISI SETS DENGAN APLIKASI SPREADSHEET

Salah satu langkah yang dapat dilakukan untuk meningkatkan kualitas sumber daya manusia adalah dengan meningkatkan kualitas pendidikan sains (IPA). Dalam pembelajaran sains sedapat mungkin diusahakan agar konsep yang diajarkan mudah ditemui siswa di lingkungan sekitarnya. Pembelajaran bervisi SETS merupakan salah satu pendekatan pembelajaran yang diharapkan dapat mengembangkan kemampuan berfikir sehingga saat mempelajari sains siswa dapat mengintegrasikannya dengan unsur-unsur yang lain seperti teknologi, lingkungan dan masyarakat. Dalam pembelajaran fisika, pemahaman konsep sangatlah penting. Pemodelan gejala fisika secara matematis ini dapat menimbulkan kesulitan bagi mahasiswa untuk memahami makna fisis dari fenomena alam yang sesungguhnya terjadi. maka dipandang perlu untuk dibuat bahan ajar fisika bervisi SETS yang dilengkapi dengan beberapa aplikasi Spreadsheet untuk memvisualisasikan persamaan-persamaan matematis tersebut dalam bentuk tabel dan grafik agar lebih mudah dipahami.Tujuan penelitian ini adalah menghasikan bahan ajar fisika dasar I bervisi SETS dengan aplikasi Spreadsheet yang sesuai untuk mahasiswa SBI. Jenis penelitian yang digunakan dalam penelitian ini adalah penelitian pengembangan (R and D) yang meliputi tahap (1) studi pendahuluan dan (2) pengembangan model.  Penelitian ini dilaksanakan di Pendidikan Matematika  Jurusan PMIPA FKIP UNS. Data penelitian dikumpulkan melalui tes, wawancara dan angket. Data dari wawancara dan angket dianalisis dengan teknik deskriptif kualitatif sedangkan hasil tes dianalisis dengan gain ternormalisasi.Berdasarkan hasil uji coba bahan ajar Susunan bahan ajar fisika dasar I bervisi SETS dengan aplikasi Spreadsheet yang sesuai untuk mahasiswa SBI adalah bahan ajar  memenuhi urutan berikut: pendahuluan (uraian tentang pokok materi yang akan dipelajari dan hubungannya dengan SETS), analisis fenomena fisika dengan pendekatan matematik/pendekatan analitik tanpa bantuan Spreadsheet Excel, analisis fenomena fisika dengan pendekatan analitik dengan bantuan Spreadsheet Excel, analisis fenomena fisika dengan pendekatan numerik dengan bantuan Spreadsheet Excel, dan pendalaman materi berdasarkan analisis SETS. Hasil uji coba model praktikum dengan prinsip One on One  menunjukkan skor gain 0,54 yang tergolong sedang, hasil uji coba kelompok kecil menunjukkan skor gain 0,57. Gain diperoleh pada uji coba yang lebih luas adalah 0,50 yang tergolong sedang. Kata Kunci: Spreadsheet Excel, SETS, pemahaman konse

Kajian Pustaka Pengaruh Porositas Buatan Pada Adsorber Terhadap Kualitas Transfer Panas Dan Massa

Pada mesin pendingin tenaga panas, efisiensi kerja mesin sangat dipengaruhi oleh kemampuan adsorber dalam menyerap refrigeran dalam jumlah yang banyak dan melepaskannya dalam waktu yang singkat. Kecepatan tersebut akan meningkat jika memiliki kecepatan transfer panas dan massa yang tinggi.Penelitian ini bertujuan untuk mengetahui pengaruh variasi besar pori-pori adsorber padat terhadap laju transfer massa dan panas pada karbon aktif. Metode penelitian ini menggunakan kajian pustaka dari berbagai sumber atau referensi yang relevan.Hasil penelitian pustaka yang diperoleh adalah bahwa semakin besar volume pori menyebabkan transfer massanya dan panas tinggi namun terlalu banyak pori menjadikan volume adsorber menjadi kecil sehingga transfer massa mencapai titik maksimal dan menurun. Kata Kunci : karbon aktif, pair adsorber, mesin pendingi

Upaya Meningkatkan Kemampuan Kognitif dan Minat Belajar Siswa Menggunakan Modul Berbasis Scientific Approach Kelas VII C SMP Negeri 4 Surakarta

The objectives of this research are: (1) to improve the students\u27 cognitif competence of 7th grade students of SMPN 4 Surakarta in the second semester, 2014/2015 academic year particulary in temperature, heat and heat transfer material by using scientific approach-based modul, and (2) to improve the learning interest.This Classroom Action Research (CAR) adopts Kurt Lewin model. It was conducted collaboratively between the researcher and the teacher within two cycles. Each cycle began with preparation stage then followed by implementation of using the modul within the cycle stage which covers planning, action, observing, and reflection stage. The subject of the research was 33 students at the 7th grade in SMPN 4 Surakarta in the 2014/2015 academic year. The research was particularly conducted to teach temperature, heat and heat transfer material. The data were collected through observation, interview with teacher and students, post test, questionnaire, and document analysis. The data were validated through triangulation technique. The data analysis employed used qualitative and quantitative technique.The finding of this research shows that: (1) The students\u27 cognitive competence improved as much as 2,73% surpassing the expected target. The number of students who met the passing grade was 72,73%, with the passing score of 86. (2) the students\u27s learning interest also improved as much as 2,5% surpassing the expected target. The aspects of learning interest that became the focus of this research improved such as: (1) the willingness which improved to 82,89%, (2) the attention which improved to 76,08%, (3) and the participation which improved to 78,57%

Guided inquiry lab: Its effect to improve student’s critical thinking on mechanics

Learning trends in the 21st-century require students to have the ability to sort appropriate information from certain sources. To do this, students must have critical thinking skills. One of the learning models that can facilitate students to think critically is a guided-inquiry lab. Thus, the purpose of this study was to quantitatively analyze the impact of the implementation of the guided-inquiry lab model on students' critical thinking skills on mechanics material. A pre-experimental method employing one group pretest-posttest only design was applied to obtain students' critical thinking skills data before and after the implementation of the guided-inquiry lab model. A total of 32 students from a junior high school in the city of Karanganyar, Central Java, were involved as the samples in this study. The data obtained were then analyzed using N-gain calculations. Based on the data analysis, there are 81.25% of students have medium creative thinking skills after being taught with a guided-inquiry lab, meaning there is an increase in the average score of students after being taught using a guided-inquiry lab model. It can be concluded that the implementation of the guided-inquiry lab model is effective to improve students' critical thinking skill

Students’ Creative Thinking Skills on Heat Phenomena Using POGIL Learning Model

This research aimed to analyze the improvement of students' creative thinking skills on the topic of heat and its transfer using the POGIL model. The matter concerning heat and its transfer has some characteristics that enable students to carry out practicum and trigger them to develop their higher-order thinking skills. The method used in this research was pre-experimental with one group pretest-posttest design. A total of 32 seventh grade students at SMPN 1 Jaten Karang Anyar, Central Java, were randomly selected as the participants in this research. To measure the increase in students' creative thinking skills, a multiple-choice test had been developed based on the indicators of creative thinking skills. Based on the results of data analysis, the values of N-gain on the indicators consisting of fluency, flexibility, originality, and elaboration were 0.56, 0.60, 0.46, and 0.53, respectively. Those numbers meant that creative thinking was in the medium category. Further analysis shows that, by using the POGIL model on the topic of heat and its transfer learning, students’ creative thinking skills can be increased, especially on the indicators of fluency and flexibility

Harvesting Energy Panas Matahari Menggunakan Thermoelectric dan Photovoltaic

Paper ini bertujuan untuk: (1) Membuat prototipe Harvesting Energy panas matahari menggunakan Thermoelectric dan Photovoltaic; dan (2) Mengetahui pengaruh variasi suhu dan intesitas cahaya terhadap arus dan tegangan yang dihasilkan dari Thermoelectric dan Photovoltaic. Makalah ini disusun berdasarkan kajian literatur seperti buku, jurnal, internet, dan literatur lainnya yang membahas tentang pemanfaatan modul Thermoelectric dan Photovoltaic sebagai alat konversi energi panas dan cahaya Matahari menjadi energi listrik. Metode penelitian dalam Eksperimen Fisika II ini adalah metode eksperimen sedangkan teknik analisis data yang digunakan yaitu analisis kuantitatif dan grafik. Hasil analisis data dibandingkan dengan teori yang sudah ada. Percobaan ini dilakukan dengan cara merangkai seri 4 buah modul Thermoelectric kemudian memberikan perbedaan suhu pada kedua permukaan modul Thermoelectric yakni pada sisi panas diberikan suhu lebih tinggi dan pada sisi dingin diberikan suhu yang lebih rendah. Lalu dari keluaran modul dihitung nilai tegangan dan arus yang dihasilkan. Kemudian untuk modul Photovoltaic yang diberi pancaran cahaya Matahari yang diubah menjadi arus dan tegangan listrik yang masing-masing keluaran dari modul diperkuat oleh rangkaian Blocking Oscilator. Dengan diperolehnya data tegangan, arus, dapat digunakan untuk mencari berapa lama waktu yang diperlukan untuk mengisi baterai 2,4 V dengan kapasitas 2000 mAh. Dari hasil percobaan yang dilakukan dengan waktu pengamatan yang berbeda diperoleh bahwa tegangan maksimal yang mampu dihasilkan oleh sistem adalah V = 3,115 volt, dan arus I = 47,07 mA, sehingga waktu yang dibutuhkan baterai agar terisi secara penuh dapat dihitung dengan persamaan Kapasitas Baterai (mAh) = Kapasitas Charger (mA) x Waktu Pengisian (h), dari perhitungan diperoleh lama waktu pengisian baterai adalah t = 42,49 jam