OJS Universitas Tadulako
Not a member yet
186 research outputs found
Sort by
The Effect of Combined Problem Based Learning and Scaffolding Models on Students’ Critical Thinking Ability
Full text linkThis study aims to determine the effect of Combined problem-based learning and scaffolding models on students’ critical thinking ability at SMP Negeri 21 Palu. This type of research is a quasi experiment. The research was conducted in two class groups: class VII and class VIII B as the experimental class. The data collection technique uses purposive sampling. The main instrument used was the 7th-grade of critical thinking essay test which consisted of 8 questions. Data were analyzed by a non-parametric test. It is the Wilcoxon test signed ranks test. Obtained the results that Asymp.Sig (2-tailed) is 0,000 on the critical thinking ability test, H1 is accepted, this means that there is a significant effect of the combined problem-based learning and scaffolding models on the critical thinking ability of students at SMP Negeri 21 Palu in the 2019 / 2020 school year
Identifikasi Karakteristik Fisik Berbagai Jenis Agregat Halus dan Korelasinya pada Sifat Beton Segar dan Beton Padat
Full text linkOne of the main constituents of concrete is fine aggregate or sand. As a filler, the characteristics of sand affect the properties of both fresh and hardened concrete. The aim of this research is to identify the characteristics of various types of sand and to correlate them with the properties of the concrete. The type of sand used in the experiment is common type of sand used in construction; for instance, silt sand, river sand, and beach sand, as well as recycled sand from concrete waste. The examination on physical characteristics includes visualization with a digital microscope, specific gravity, water absorption, fine modulus, and impurities content. This characteristic is compared with the value of slump, concrete unit weight, and concrete compressive strength. Quarry sand has denser particles and a fairly coarse texture, while recycled sand has the finest, hollowest, lightest particles and a lighter color than other sands. According to the properties of fresh concrete, silt sand produces the lowest slump value while recycled sand has the highest slump value. A positive correlation in the form of y = 1,55x + C is obtained from the relationship of the specific gravity of sand (x) to the compressive strength of concrete (y) and constants (C). the same correlation but in a negative relationship is obtained from the influence of water absorption characteristic
Pemodelan Estimasi Kecepatan Rambat Gelombang Geser Tanah (VS30) Berbasis Topografi, Geomorfologi dan Geologi
Full text linkThe 30 m top layer of soil as the medium of propagation of the earthquake wave is the closest to the structure of the building, and could have different effects depending on the type of soil and topography. The Indonesian earthquake code for building and non building structures known as SNI 1726-2012 using the directly measured VS30 as the primary parameter to identify the stiffness effect of sediment. The VS30 can be measured using non invasive methods, such as multi-channel analysis of surface waves (MASW). Direct, invasive measurements of VS30 around Indonesia would be difficult to implement due to the vastness of the country and the high cost nature of the testing. To provide an alternative to the direct measurement, VS30 estimation models have been developed. VS30 estimates using topography in the form of slopes are commonly used in North America, while geomorphological units are used in Japan. This research was carried out by correlating VS30 direct measurements with topographical, geomorphological and geological attributes. The VS30 obtained from series of MASW tests, the topographic slope and elevation from the Shuttle Radar Topography Mission (SRTM) 30 arcsec data, the geomorphology units data which are Structural, Karst, Vulkanik, Fluvial and Marine from landsystem map and the geologic age data from Geological Survey Centre (PSG). Data were analyzed by linear regression and spatial analysis. VS30 estimation modeling produces models with four variables, namely elevation, slope, geomorphological unit and geological age in the regions of Palu. Four proxy based estimates provide values that are slightly higher or lower but in a range not so far from direct measurements. The results of data processing analysis shows that local conditions greatly affect VS30 estimates in Palu. The VS30 estimation model in the form of a logarithmic equation is as follows, Log VS30 = -3.925 + 0.062 log(s) + 0.069 log(Ev) + 0.665 log(G) + 1.824 log(A) gives a slightly higher or lower value but in a range not far from direct measurement. This VS30 estimation model is suitable for soil classification on a regional scale and can be adopted for microzonation maps or real-time shake map
Analisis Struktur Baja dengan Perhitungan Beban Gempa Menggunakan Metode Time History Berdasarkan SNI 1726:2012 dan SNI 1729:2015
Full text linkThe selection of material types used in designing a building is one of essential parts since every type of material consisted of different elements. One of primary materials in constructing building structure is steel. The use of steel has been implemented in most building structures nowadays for its high performance of ductility compared to concrete and wood. Ductility is an important requirement to achieve building structure that is resistant to earthquake. In this thesis, there will be an elaboration of an earthquake resistant and steel structured building. The designed building will be a five-floor office configured by an organized structure. The steel framework system of specialized moment loader is used as structure system of earthquake resistance and analysed using time history method. The steel material used has A36 grade (fy = 250 MPa; fu = 400 MPa), and the concrete grade f’c = 30 MPa. The preparation process results in a design of an earthquake steel resistant structure building that meets the requirement of intersection between each floor and the maximum intersection value occurs on second floor with 93,5 mm where the legal supposed intersection has been valued on 95 mm. The dimension of structure element used is profile block W 14 x 6,75 x 38 for the x-axis and W 16 x 7 x 40 for y-axis. It also has 12 cm of plate thickness on every level with profile column of Wx14x16x28
The Diffrences in Student’s Grade Point Average (GPA) Based on SBMPTN of UTBC and UTBK and External Motivation in Choosing PMIPA Majors of Tadulako University
Full text linkThis study aims to describe the differences in student's GPAs at the Mathematics and Natural Science Education (PMIPA) Department of Tadulako University who enter through the Joint Selection to Enter State Universities (SBMPTN) pathway with the Print-Based Written Test (UTBC) in 2018 and Computer-Based Writing Examination (UTBK) systems in 2019, describe the relationship of external motivation of students in choosing majors with GPA based on the SBMPTN (UTBC and UTBK) pathway. The samples used were all students at the PMIPA Study Program of Tadulako University who entered through the UTBC SBMPTN pathway in 2018 as many as 134 students and 130 students of UTBK 2019. There is an insignificant difference in the students' GPA through the UTBC and UTBK SBMPTN pathway. The students of UTBK have a higher GPA in the second semester than the students of UTBC, with the average GPA of UTBC students is 3.407, and the average GPA of UTBK students is 3.525. There is no relationship between students' external motivation in choosing a major against students' GPA at the PMIPA department of Tadulako University, but factors of interest and self-will influence it
Tinjauan Faktor-Faktor yang Mempengaruhi Karakteristik Tukang Terhadap Prestasi Kerja (Studi Kasus Proyek Area Kota Palu)
Full text linkHuman resources are one of the most important factors in determining the success of a project. Measurement of human resources is expressed in numerical values measured by workers based on influencing variables. The purpose of this study was to determine what factors influence the characteristics of workers on the work performance of a construction project. The method used in this study is a quantitative descriptive method by distributing questionnaires directly with the contents in accordance with the expected research, then the questionnaires are distributed in the field (Fence Rehabilitation Work at the Central Sulawesi BPS Office and Building Construction Work for the Meteorology, Climatology, and Geophysics Office Classroom). I) with a total o f 30 respondents. After obtaining data from the field with the help of questionnaires, then data processing is carried out which includes reliability tests, descriptive analysis, and Relative Rank Index (RRI) analysis. The results of the study indicate that the main factors that greatly affect the work performance of construction workers in the implementation of construction projects in Palu are the discipline factor with a 50% value presentation, the motivation factor with a 30% presentation and 20% productivity
Analisis Kinerja Jaringan Irigasi Ogoamas 1, Kecamatan Sojol Utara, Kabupaten Donggala
Full text linkIrrigation performance is influenced by several aspects, namely: physical infrastructure, crop productivity, supporting facilities and infrastructure, personnel organization, documentation, and water user farmer associations (P3A). The purpose of this study was to determine the performance of the irrigation network in the Ogoamas 1 Irrigation Area based on the Regulation of the Minister of Public Works No.12/PRT/M/2015. The research method was carried out by direct survey to the location, interviews and documenting the irrigation network to obtain primary and secondary data. secondary. After that, data analysis was carried out. From the results of the analysis it can be concluded that the weight value of the physical infrastructure condition is 33.21%, the condition of crop productivity is 10.40%, the condition of supporting facilities is 8.75%, the personnel organization condition is 11.40%, the documentation condition is 3.80. %, and the P3A condition is 6.15%. The result of the overall weight value of the performance of the Ogoamas 1 irrigation network is 73.71% with good performance category.Kinerja irigasi dipengaruhi oleh beberapa aspek, yaitu: prasarana fisik, produktivitas tanam, sarana dan prasarana penunjang, organisasi personalia, dokumentasi, dan perkumpulan petani pemakai air (P3A). Tujuan penelitian ini adalah untuk mengetahui kinerja jaringan irigasi pada Daerah Irigasi Ogoamas 1 berdasarkan Peraturan Menteri Pekerjaan Umum No.12/PRT/M/ 2015. Metode penelitian dilakukan dengan cara survai langsung ke lokasi, wawancara dan mendokumentasikan jaringan irigasinya untuk mendapatkan data primer dan data sekunder. Setelah itu dilakukan analisis data. Dari hasil analisis dapat disimpulkan bahwa nilai bobot kondisi prasarana fisik sebesar 33,21%, kondisi produktivitas tanam sebesar 10,40%, kondisi sarana penunjang sebesar 8,75%, kondisi organisasi personalia sebesar 11,40%, kondisi dokumentasi sebesar 3,80%, dan kondisi P3A sebesar 6,15%. Hasil nilai bobot keseluruhan kinerja jaringan irigasi Ogoamas 1 sebesar 73,71% dengan kategori kinerja bai
Analisis Tingkat Kebisingan Lalu Lintas pada Kawasan Kampus 1 Universitas Negeri Gorontalo Ditinjau dari Tingkat Baku Mutu Kebisingan yang Diizinkan
Full text linkAn increase in traffic volume causes several negative impacts, one of which is noise. The Campus 1 area of the State University of Gorontalo is one of the education zones where the traffic flow is quite heavy, so a study was conducted to analyze the noise level due to traffic in the area and compare the noise level with the Noise Quality Standard KEP-48/MENLH/11/1996. This research was conducted on roads adjacent to Campus 1 State University of Gorontalo, namely on the roads Jenderal Sudirman (point 1) with road type 2/2 UD, the roads Ir. Hi. Joesoef Dalie (point 2) with road type 4/2 D, and the roads Dewi Sartika (point 3) with road type 2/2 UD. The method used is called "Calculation of Road Traffic Noise (CoRTN). The highest noise level on the road General Sudirman (point 1) is 69,36 dB(A) on Monday, 69,56 dB(A) on Wednesday, and 67,74 dB(A) on Saturday. On Monday, the highest noise level on the roads of Ir. Hi. Joesoef Dalie (point 2) is 72,28 dB(A), on Wednesday, 72,69 dB(A), and on Saturday, 69,90 dB(A). The highest noise level on the road Dewi Sartika is 67,77 dB(A) on Monday, 67,41 dB(A) on Wednesday, and 67,57 dB(A) on Saturday. These results indicate that the noise level in the Campus 1 area of the State University of Gorontalo has exceeded the permitted noise quality standard according to the Decree of the State Minister of the Environment No. 48 of 1996 concerning the noise quality standard for educational areas, which is 55 dB (A)
Improving Students' Independent Learning Outcomes and Science Through Discovery Learning
Full text linkThis study aims to improve student learning outcomes and independence through discovery learning in science subjects. Class action research methods. In the pre-action, there were 5 students (26.3%) who had fulfilled the KKM and there were 14 students (73.7%) who had not. In cycle I there were 10 students (52.7%) who fulfilled the KKM and 9 students (47.3%) who did not. Student independence was obtained by 12 students (63.16%) with sufficient criteria. and 7 students (36.84%) in less criteria. In cycle II there were 15 students (78.9%) who fulfilled the KKM and 4 students (21.1%) who had not, obtained student independence, namely there were 7 students (36.84%) with good criteria, there were 10 students (52.63 %) was sufficient, and there were 2 students (10.53%) lacking. The percentage of students who scored above the KKM in cycle I was 52.6% and cycle II was 78.9%, this shows that the discovery learning method was able to improve students' science learning outcomes
Application of the STAD Type Cooperative Learning Model Based on Real Experience in Improving Student Learning Outcomes in Science Learning Subjects of Movement in the Movement of Animals and Plants in Junior High Schools
Full text linkThe research method uses the Hopkins model design which consists of 4 stages, namely planning, implementation, observation and reflection. Data collection techniques using observation and test methods. The results showed that the percentage of student activity in cycle I was 69% (enough), increased in cycle II to 88% (very good), the percentage of teacher activity in cycle I was 72% (enough), increased in cycle II to 91% (very good). Good). Likewise with the assessment of student learning outcomes; the percentage of attitude evaluation in cycle I was 87% increased in cycle II to 90%, evaluation of the realm of knowledge in cycle I for Classical absorption (CA) 74% and Classical Learning Mastery (KKB) 83% increased in cycle II to Classical absorption (CA) 80% and Classical Learning Mastery (PKK) 93%, the assessment of the domain of skills in cycle I was 69% increased in cycle II to 94%. Based on these results it can be concluded that the application of the STAD type cooperative learning model based on real experience can improve the learning outcomes of class VIII students in learning science on the movement of animals and plants at SMP Negeri 1 Tombusabora Sindue