Kemampuan Pemecahan Masalah Siswa pada Materi Bangun Datar di SMP

: This research aims to describe the problem solving ability of students on the material about plane in grade VII SMP Negeri 3 Teluk Keramat. The method used is descriptive method with the survey of the research. The sample of research is 34 the students of graude VIII SMP Negeri 3 Teluk Keramat. Data collection tools that used are a essay test and unstructured interview guides. The result data analysis showed that the students\u27 ability to understand the problems classified is the middle with the percentage of 45.8% ; students\u27 ability to prepare planing for the problems is low with the percentage of 31.6% ; students\u27 ability to resolve the planing in accordancing is low with the percentage of 18.2%; and students\u27 ability to re-examine the procedures and results of the completion is low with the percentage of 16.4%

Using Rural Household Income Survey Data to Inform Poverty Analysis: An Example from Mozambique

This paper demonstrates that income survey data can be very informative in explaining the variation across households in the incidence and severity of absolute poverty using a rural household income data set for Mozambique. Results from regression analysis of the sources of variation are used to simulate the impact of alternative agricultural interventions or strategies on rural poverty. Complementarities in the insights gained from consumption expenditure and income surveys may justify the collection and analysis of both types of information, especially in Sub-Saharan Africa, the one region of the world where the incidence of poverty is increasing.Poverty analysis, household income surveys, agricultural development, Millenium Development Goals, Mozambique, Consumer/Household Economics, Food Security and Poverty, C21, I3, O13, O2, Q18,

INVESTIGASI TEKNIK “CLUSTERING” DALAM METODE PERHITUNGAN EMISI SECARA TOP-DOWN DARI INDUSTRI SEMEN

Abstrak: Industri semen sering dipertimbangkan sebagai salah satu industri kunci yang cenderung mencerminkan aktivitas ekonomi secara umum suatu negara. Di Indonesia industri semen juga termasuk dalam industri lahap energi yang memberikan kontribusi melepas pencemar udara yang cukup banyak ke udara ambien. Sumber emisi pencemar udara pada proses pembuatan semen Portland dikategorikan menjadi dua yaitu, sumber emisi dari proses produksi (tanpa pembakaran) dan sumber emisi dari proses pembentukkan energi dari pembakaran bahan bakar untuk kebutuhan produksi. Pada proses produksi pembuatan semen, terdapat tiga proses utama yang dikategorikan menghasilkan pencemar udara, yaitu : persiapan bahan baku, pembuatan klinker di kiln, dan pembuatan semen itu sendiri. Pada penelitian ini dilakukan perhitungan inventarisasi emisi dari sektor industri semen dengan parameter CO, NOx, SOx, dan PM. Untuk mendapatkan data mendetail yang dibutuhkan dalam inventarisasi emisi dilakukan metode clustering. Prinsip teknik clustering adalah membagi beban emisi dari sumber titik menjadi sumber area. Dasar pembagiannya adalah satuan wilayah terkecil dengan proporsi terbesar pada daerah yang terdapat industri pembuatan semen. Untuk mengetahui signifikansi data yang digunakan untuk teknik clustering maka dilakukan uji ANOVA. Kata kunci: Industri semen, Indonesia, emisi pencemar udara, clustering, ANOVA. Abstract: Cement industry is often considered as one of the key industries that tend to reflect the economy activity of a country. In Indonesia, cement industry is included as one of hunger energy industries that contribute enough emit air pollution to ambient. Sources of air pollutant emissions in the production of Portland cement generally are categorized into two categories, the source of emissions from the production process (without combustion) and the source of emissions from fuel combustion for production energy needs. There are three main categorized that generate air pollutants in the production process of cement manufacture: preparation of raw materials, clinker making in the kiln, and cement-making itself. This research calculates the emissions inventory from cement industry with the parameters are CO, NOx, SOx, and PM. To obtain the data required for detailed emissions inventory conducted clustering method. The principle of clustering techniques is to divide the load emissions from point sources into the source area. Basically, the division is a unit of the smallest region with the largest proportion which located the cement manufacturing industry. To know the significance of the data used for clustering technique, this research performs ANOVA test. Key words: Cement Industry, Indonesia, pollutant emission, clustering, ANOVA

Observasi Citra Paru Menggunakan Active Shape Model Sebagai Opini Teknologi Medis

Paru merupakan salah satu organ tubuh yang berfungsi untuk proses pernapasan. Sesuai dengan fungsinya, kondisi dan kesehatan organ paru sangat di butuh dalam kehidupan manusia. Untuk mengetahui kondisi kesehatan organ paru dibutuhkan upaya observasi kondisi paru secara rutin. Tujuan dari penelitian ini tidak lain adalah mengembangkan perangkat lunak untuk dijadikan desain prototipe observasi citra paru sebagai opini teknologi medis menggunakan active shape model. Upaya untuk melakukan observasi kondisi organ paru dalam penelitian ini menggunakan data citra paru yang dihasilkan dari perangkat Computed Tomography Scan (CT-Scan) 2D. Data citra paru tersebut di evaluasi dengan proses segmentasi dengan metode active shape model. Hasil dari penelitian ini berupa perangkat lunak prototype observasi citra paru manusia sebagai opini teknologi medis menggunakan active shape model

Remediasi Miskonsepsi Menggunakan Concept Attainment Berbantuan Mind Map Pada Rangkaian Listrik Arus Searah

This research aims to know effectiveness remediation using Concept Attainment instruction model assisted Mind Map. The research method that used is a pre-experimental with one group pretest posttest design. This research involve 9 students grade X SMA Santun Untan Pontianak that choosed at random used intact group technique. Instrument that used were test and non test. Test in the form of pretest and posttest multiple choice with three answer choice that enclosed with reason while non test in the form interview. Statistic test that used is Wilcoxon test, obtained Tkhitung(0,0)<Ttabel(6) so that occur significant misconception difference. The average reduction misconception of student is 40,5%. Calculation effect size use Gene Glasss formula, obtained in the amount of 3,22 and its amount more than 0,7 so that its effectiveness is high. Students response obtained from interview. Student give positive response on an average Concept Attainment instruction model assisted Mind Map

Pengaruh Model Kooperatif Tipe Nht Terhadap Hasil Belajar Materi Momentum Dan Impuls Di SMA

Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran kooperatif tipe Numbered Head Together (NHT) terhadap hasil belajar siswa pada materi momentum dan impuls kelas XI IPA SMA Negeri 5 Pontianak. Bentuk penelitian kuasi eksperimental dengan rancangan nonequivalent control group design. Sampel penelitian ini yaitu XI IPA 1 sebagai kelas eksperimen dan XI IPA 3 sebagai kelas kontrol. Instrumen yang digunakan berupa pilihan ganda dan essay Rata-rata hasil belajar siswa kelas eksperimen adalah 73.38, sedangkan rata-rata hasil belajar siswa kelas kontrol adalah 68.44. Berdasarkan hasil analisis uji t dengan taraf signifikan α=5% menunjukkan bahwa terdapat perbedaan antara hasil belajar siswa yang menggunakan model pembelajaran kooperatif tipe Numbered Head Together (NHT) dengan siswa yang menggunakan pembelajaran konvensional. Nilai Effect Size yang diperoleh sebesar 0.7 dengan kategori sedang dan memberikan kontribusi sebesar 25.80%, artinya model pembelajaran kooperatif tipe Numbered Head Together (NHT) berpengaruh terhadap hasil belajar siswa. Kata Kunci : Model Pembelajaran Kooperatif Tipe NHT, Hasil Belajar, Momentum dan Impuls Abstrack: The purpose of this research was to know the influence type of cooperative larning model Numbered Head Together (NHT) toward learning outcomes in momentum and impulse materials on grade XI IPA SMAN 5 Pontianak. The form of this research was a quasy experimental design with nonequivalent control group design. The sample of this research are XI IPA 1 as experiment class and XI IPA 3 as control class. The instrument that been used was multiple choice and essay. The average learning outcomes of students in experiment class is 73.38, while the average learning outcomes of students in control class is 68.44. Based on the t test with significance level α = 5% indicated there were differences between students that taught by using type of cooperative larning model Numbered Head Together (NHT) with students that taught by using conventional learning model. The value of effect size is 0,7 with moderate category and gave the contribution 27,64%, it means type of cooperative larning model Numbered Head Together (NHT) gave effect on student learning

Remediasi Kesalahan Menyelesaikan Soal USAha Energi Menggunakan Strategi Systematic Approach To Problem Solving Berbasis Multirepresentasi di SMA

This study aims to determine the effectiveness of remediation using the systematic approach to problem solving strategy based on multiple representations to reduce the number of errors in answering essay test about work and energy in grade XI MIA SMAN 7 Pontianak. The study uses the form of one group pretest-posttest design and the research instrument used is test descriptions that consist of five items. The population in this study is XI MIA students of SMAN 7 Pontianak who have studied about work and energy. Sampling was carried out with the intact group and obtained class XI MIA 3 which consists of 34 students. The analysis showed there was an average decrease in the percentage of the number of errors in answering the test by 59.83% moderate. The study also found the decrease in the number of errors for each student with the highest number in the high category as many as 24 students

Peningkatan Aktivitas dan Hasil Belajar Fisika melalui Strategi Pembelajaran dan Lks Berbasis Predict-observe-explain di SMP

The purpose of this research is to improve students\u27 learning activity and the result through LKS and learning strategy based on Predict-Observe-Explain (POE) on Archimedes Law in class VIIIA of SMP Negeri 2 Sanggau. This research is a Classroom Action Research (CAR) which done in two cycle with two meetings. Every cycle has four steps, planning, implementing, observing, and reflecting. The subject of this research are 30 students from the destined class. In collecting the data the researcher used observation paper and test item. The result shows that there is an improvement in students\u27 learning activity in the active stage and very active stage from 1st cycle to the 2nd cycle that is 6,66%, from 66,67% to 73,33%. This improvement affecting the result if students\u27 learning activity to reach the KKM from the 1st cycle to the 2nd cycle that is 3,33%, from 90% to 93,33%

Penggunaan Learning Cycle Untuk Meremediasi Miskonsepsi Siswa Pada Materi Tekanan Zat Cair Di SMP

This study aims to find out the effectiveness of Learning Cycle Model in remediating students' misconception for Grade VIII students of SMP Muhammadiyah 2 Pontianak in the topic about Liquid Pressure. The method used is pre-experimental with one group pretest posttest design. The data collecting instrument was a multiple choice test without explanation, which was tested to 29 students sampled by using intact group. The result shows that the students' average misconceptions in the pretest and posttest are 63,18% and 24,13% respectively. Mc Nemar test obtained X2table (3,84) bigger than X2 count for dk = 1 and α = 5%, therefore, overall there is a significant conceptual improvement and the proportion value of the decreasing number of misconceptions is 0,62 (moderate). As the result, remediation by using the Learning Cycle Model is effective to decrease the number of students' misconceptions. This study is expected to be used as an alternative way of implementing remediation to the students' misconceptions on liquid pressure