Automatic vectorization of point symbols on archive maps using deep convolutional neural network

Archive topographical maps are a key source of geographical information from past ages, which can be valuable for several science fields. Since manual digitization is usually slow and takes much human resource, automatic methods are preferred, such as deep learning algorithms. Although automatic vectorization is a common problem, there have been few approaches regarding point symbols. In this paper, a point symbol vectorization method is proposed, which was tested on Third Military Survey map sheets using a Mask Regional Convolutional Neural Network (MRCNN). The MRCNN implementation uses the ResNet101 network improved with the Feature Pyramid Network architecture and is developed in a Google Colab environment. The pretrained network was trained on four point symbol categories simultaneously. Results show 90% accuracy, while 94% of symbols detected for some categories on the complete test sheet.

ANALISIS KEMAMPUAN BERPIKIR KREATIF MATEMATIKA DAN METAKOGNITIF SISWA SELAMA PANDEMI COVID-19 DI SMA NEGERI 1 ANDAM DEWI

This study aims to describe mathematic creative thinking ability and student’s metacognitive during Covid-19 pandemic in SMA Negeri 1 Andam Dewi. This research was conducted by applying descriptive quantitative method. Sample of this research is 20 students which taken by using cluster random sampling technique from 36 students. Questionnaire and test were used in collecting the data. Questionnaire sheet shows the average of students’ metacognitive is 78.61 (good category) and test sheet shows the average of mathematic creative thinking ability is 83.53 (high category). Futhermore by using ttest Kolmogorov- Sminov shows significant value is less than 0.05 (0.000<0.05). It means there is any significant influence of students’ metacognitive on mathematic creative thinking ability during Covid-19 pandemic in SMA Negeri 1 Andam Dewi.

CRITICAL READING AS AN APPROACH TO ENHANCE ESSAY WRITING IN TAMIL AMONG FORM 2 STUDENTS

This study was conducted to evaluate respondents' writing ability through the Bloom’s Taxonomy 1956 theory using a critical reading approach. This study was based on three objectives: assessing respondents’ essay writing quality before introducing critical reading, assessing respondents' writing quality after critical reading exposure, and examining the perspective of exposing the critical reading approach. There were 10 form 2 students from an intermediate school located in Negeri Sembilan who were enrolled in the study. All data was collected and analysed from a test sheet, questionnaire and essay marking scheme. There are four reading passages used from form one and two textbooks. The respondents were evaluated by a post test to determine the effectiveness of the teaching of learning about critical reading applications in essay writing. This teaching process has been conducted for four weeks and the respondents have improved their essay writing skills with a critical reading approach. At the end of this study it was realized that critical reading approach can improve essay writing.

Design and simulation of mechanical press for testing of coining tools with nanostructured coatings

The present study proposes the design, simulation, and finite element analysis (FEA) of a mechanical press to test coining tools that contain nanostructured coatings. The designed mechanical testing press has a nominal force capacity of 800 kN with a ram stroke of 100 mm. CAD modeling of components, assemblies, and press structure is developed. The validation of the safety factor of the stress of the press is implemented by FEA analysis. Axisymmetric 2D FEA simulation is applied to determine the nanostructured coating behavior when subjected to high loads, the results are promising for future simulation studies on coatings. A displacement mechanism was designed for the test sheet, offering versatility and a variety of options for testing the coining tools as often as necessary under different load conditions. The final results of the machine operation simulation are satisfactory.

Simple Modeling of Crystal Structure of Carbon Tetrachloride, Diamond, and Fullerene using Molymods

This research aims to make simple modeling of the crystal structure of carbon tetrachloride, diamond, and fullerenes using molymod. The method used is a descriptive quantitative with the research stages including the selection, making, and testing the feasibility of crystal structure. The feasibility of the crystal structure was assessed using a product feasibility test sheet and analyzed using the ideal standard mean equation. The development of a crystal structure model was carried out using a simple and easy method to obtain equipment in the form of molymod. The results of this research indicate that the crystal structure of carbon tetrachloride, diamond, and fullerenes can be interpreted significantly and easily with the help of molymod. The simple model of the crystal structure is also suitable for use as a physics learning medium that can help students understand abstract crystal structure material.

The Correlation Between Work Motivation and Work Discipline on Teacher Performance

This study aims to determine the correlation between work motivation and work discipline on teacher performance. The formulation of the problems in this study: (1) is there a correlation between work motivation and teacher performance?, (2) is there a correlation between work discipline and teacher performance?, (3) is there a correlation between work motivation and work discipline on teacher performance. This type of research is descriptive quantitative. The sample in this study amounted to 74 students. Data collection techniques in the form of tests and documentation. The instrument used was a test sheet. The theories used are teaching and learning strategy theory and learning evaluation theory. The results of this study. Based on the respondents' perceptions of work motivation, a score range of 116-150 was obtained, with a total score of 20409 and an average score of 130.79 which in this case was categorized as quite good. Respondents' perceptions about the effect of work discipline on teacher performance obtained a score range of 107 - 151, with a total score of 20191.00 and an average score of 134.43 which is in the good category. The degree of influence of the work motivation variable (X1) and the work discipline variable (X2) on teacher performance (Y) was 0.73 or 73%. This shows that the teacher's performance (Y) is jointly (simultaneously) influenced by the work motivation variable (X1) and the work discipline variable (X2) by 73% while the remaining 27% is influenced by other factors outside the equation model.

Penerapan Pembelajaran Inquiry Terbimbing Untuk Meningkatkan Motivasi Dan Hasil Belajar IPA Pada Materi Gaya Dan Hukum Newton Terhadap Siswa SMP Negeri 2 Tanete Riaja Kabupaten Barru

This study aims to determine the motivation and learning outcomes of class VIII-3 students who are taught by a guided inquiry learning model on the material of Newton's Law and style. This research is a classroom action research consisting of two cycles. Each cycle consists of four stages including planning, acting, observing, and reflecting. In this study, there are two types of variables studied, namely: problem variables, namely motivation and science learning outcomes, and action variables, namely the application of guided inquiry learning. The instrument used to measure in this study was a motivation questionnaire instrument and a test sheet. The data analysis used was descriptive statistics. The results of this study indicate that the application of Guided Inquiry learning can improve motivation and science learning outcomes in Newtonian force and law material for class VIII-3 students of SMP Negeri 2 Tanete Riaja.

Kemampuan Menulis Puisi Bebas Menggunakan Media Gambar Pada Siswa SMPK Santo Aloysius

This study aims to determine the ability to write free poetry using picture media in VII grade students of St. Aloysius Lengko Middle School, Golo Wangkung Village, Sambi Rampas District, East Manggarai Regency. The formulation of the problem in this research is how is the ability to write free poetry using picture media in VII grade students of St. Aloysius Lengko Middle School, Golo Wangkung Village, Sambi Rampas District, East Manggarai Regency? This type of research is quantitative descriptive. The sample in this study amounted to 40 students. Data collection techniques in the form of tests and documentation. The instrument used was a test sheet. The theory used is the theory of writing poetry, theory of learning strategies and learning evaluation theory. The results of the study of the ability to write poetry by using media images in students of the St. Aloysius Lengko Middle School VII class as a whole are classified as good with an average achievement of 77.47%. Completed students numbered 31 people with a percentage of 77.5%. While students who did not complete a total of 9 people with 22.5% presentse. Abstrak: Penelitian ini bertujuan untuk mengetahui kemampuan menulis puisi bebas menggunakan media gambar pada Siswa kelas VII SMPK Santo Aloysius Lengko Ajang Kelurahan Golo Wangkung, Kecamatan Sambi Rampas, Kabupaten Manggarai Timur. Rumusan masalah dalam penelitian ini adalah bagaimanakah kemampuan menulis puisi bebas menggunakan media gambar pada Siswa kelas VII SMPK Santo Aloysius Lengko Ajang Kelurahan Golo Wangkung, Kecamatan Sambi Rampas, Kabupaten Manggarai Timur? Jenis penelitian ini adalah deskriptif kuantitatif. Sampel dalam penelitian ini berjumlah 40 orang siswa. Teknik pengumpulan data berupa tes dan dokumentasi. Instrument yang digunakan adalah lembar tes. Teori yang digunakan adalah teori menulis puisi, teori startegi belajar mengajar dan teori evaluasi pembelajaran. Hasil penelitian kemampuan menulis puisi dengan menggunakan media gambar pada siswa SMPK Santo Aloysius Lengko Ajang kelas VII secara keseluruhan tergolong baik dengan rata-rata pencapaian 77,47%. Siswa yang tuntas berjumlah 31 orang dengan presentase 77,5%. Sedangkan siswa yang tidak tuntas bejumlah 9 orang dengan presentse 22,5%.

PENDEKATAN DISCOVERY UNTUK MENINGKATKAN AKTIVITAS BELAJAR DAN PENGUASAAN KOSAKATA PADA SISWA KELAS B2 TK MUTIARA INSANI BANDAR LAMPUNG

The purpose of this study was to describe the improvement of vocabulary learning achievement by applying the discovery approach of B2 grade students of Mutiara Insani Kindergarten, Bandar Lampung. The method used in this research is Classroom Action Research (PTK). The research subjects were students of class B2 even Semester TK Mutiara Insani Bandar Lampung, totaling 20 students. Data obtained from observer observation sheet notes on the learning process planned by the researcher, learning activity sheet, and test sheet to determine learning achievement. The data were analyzed using simple statistics, namely the percentage. The action was carried out from January to March 2019. The results of the study were 65% active cycle 1 learning activity, 75% active cycle II increased 10%, 85% active cycle III, increased 10%. While learning achievement in cycle I completed 65%, cycle II completed 75%, increased by 10%, cycle III completed 95%, increased by 20%, and records of observers who partnered with researchers showed good average criteria. The conclusion of this research is that the application of discovery learning approach can increase vocabulary learning activity and achievement in class B2 students of Mutiara Insani Kindergarten, Bandar Lampung.