Meningkatkan Hasil Belajar Siswa Pembelajaran Pecahan dengan Demonstrasi Kelas III Sdn 31 Pontianak Barat

: This research aims to increasing the study result of students on Math Learn especially about fraction with applaying demonstration metodh. The Metodh that used was a description metodh. The form that used was a classroom action research. Learning with utilize demonstration metodh on math learn able increasing the study result of students on Third Grade of Elementary School 31 in West Pontianak, it show on the average of study result on the first cycle with demontration metodh was 65,83 (83,33%) a mount of students who can complete and (16,67%) the students who can not complete. The average of study result of students on the second cycle have increasing again to be was 80,28 (94,44%) the students who can complete and (5,56%) the students who can not complete. It means with utilize demontrasion metodh on math learn on Third Grade of Elementary School 31 in West Pontianak can increasing the study result of students

Meningkatkan Hasil Belajar pada Materi Struktur dan Fungsi Jaringan Tumbuhan dengan Model Discovery

Absrak: Penelitian dengan model discovery learning bertujuan untuk mengetahui proses pembelajaran dan meningkatkan hasil belajar siswa di kelas VIII SMP Negeri 2 Sungai Kunyit pada materi struktur dan fungsi jaringan tumbuhan. Penelitian ini merupakan penelitian tindakan kelas (PTK) yang dilakukan dalam dua siklus. Setiap siklus terdiri dari empat tahapan yaitu perencanaan, tindakan, observasi, dan refleksi. Alat pengumpul data meliputi lembar observasi pembelajaran dan soal tes hasil belajar. Hasil penelitian menunjukkan proses pembelajaran dengan menggunakan model discovery learning pada siklus 1 dengan persentase 87,50% dan pada siklus II dengan persentase 97,50%. Pembelajaran dengan menggunakan model discovery learning dapat meningkatkan hasil belajar siswa pada siklus 1 sebesar 70,58% dan pada siklus II sebesar 88,24%. Kata Kunci : Hasil Belajar, Model Discovery. Absract: Research by discovery learning model aiming to know about learning process and improving student learning outcomes in VIII grade of SMP Negeri 2 Sungai Kunyit with material of structure and function of plant tissue. This research is a class action research (PTK) conducted in two cycles with II meetings. Each cycles consist of four phases planning, action, observation and reflection. Data instruments sheets of observation learning and questions of learning outcomes. The research result showed that learning process which used discovery learning model at first cycles with percentages about 87,50%. And at second cycles with percentages about 97,50%. It showed, there were enhancement about 10%. Learning by using discovery learning model could incresed the student learning result. At first cycles with completeness percentages about 70,58% and at second cycles with completeness percentages about 88,24%

Pengaruh Fasilitas dan Minat Belajar terhadap Hasil Belajar Mata Pelajaran Pemasaran Siswa Smk Negeri 1 Pontianak

This study examines the influence of the facility and interest in learning on learning outcomes of subjects marketing of goods and services in class XI marketing course student of SMK Negeri 1 Pontianak. Indicators of learning facilities in the study include learning media, learning tools and school supplies, indicators of interest to learn that taste like/ pleasure in learning activities, an interest in learning, the awareness to learn without prompting, participate in learning activities, give attention large in the study. This study uses a quantitative approach to the form of multiple linear regression. Collecting data using questionnaires, interview and observation sheet. The results of the analysis are: (1) there is the influence of the facility on student learning outcomes was 35,8% as evidenced by tcount> ttable, is 4.016> 2.007; (2) a significant difference between the interest on student learning outcomes was 71,2% as evidenced by tcount> ttable, is 15.341> 2.007; (3) a significant difference between the facility to the students' interest was 37,2% as evidenced by tcount> ttable, is 5.017> 2.007; (4) a significant difference between the facility and the interest on student learning outcomes was 71,2% as evidenced by the value of Fcount> F table, is 117.124> 3.179

CFD analysis of a regular sector of the ITER vacuum vessel. Part II: Thermal-hydraulic effects of the nuclear heat load

The 3D Computational Fluid Dynamic (CFD) steady state analysis of the regular sector #5 of the ITER vacuum vessel (VV) is presented in these two companion papers using the commercial software ANSYS-FLUENT®. The pure hydraulic analysis, concentrating on flow field and pressure drop, is presented in Part I. This Part II focuses on the thermal-hydraulic analysis of the effects of the nuclear heat load. Being the VV classified as safety important component, an accurate thermal-hydraulic analysis is mandatory to assess the capability of the water coolant to adequately remove the nuclear heat load on the VV. Based on the recent re-evaluation of the nuclear heat load, the steady state conjugate heat transfer problem is solved in both the solid and fluid domains. Hot spots turn out to be located on the surface of the inter-modular keys and blanket support housings, with the computed peak temperature in the sector reaching ∼290 C. The computed temperature of the wetted surfaces is well below the coolant saturation temperature and the temperature increase of the water coolant at the outlet of the sector is of only a few C. In the high nuclear heat load regions the computed heat transfer coefficient typically stays above the 500 W/m2K target

CFD analysis of a regular sector of the ITER vacuum vessel. Part I: Flow distribution and pressure drop

The 3D steady-state Computational Fluid Dynamics (CFD) analysis of the ITER vacuum vessel (VV) regular sector #5 is presented, starting from the CATIA models and using a suite of tools from the commercial software ANSYS FLUENT ®. The peculiarity of the problem is linked to the wide range of spatial scales involved in the analysis, from the millimeter-size gaps between in-wall shielding (IWS) plates to the more than 10 m height of the VV itself. After performing several simplifications in the geometrical details, a computational mesh with ∼50 million cells is generated and used to compute the steady-state pressure and flow fields from a Reynolds-Averaged Navier-Stokes model with SST k-ω turbulence closure. The coolant mass flow rate turns out to be distributed 10% through the inboard and the remaining 90% through the outboard. The toroidal and poloidal ribs present in the VV structure constitute significant barriers for the flow, giving rise to large recirculation regions. The pressure drop is mainly localized in the inlet and outlet piping