ANALISIS PERBANDINGAN TINGKAT KOMPETENSI SISWA ANTARA YANG MENGGUNAKAN INTERNET DAN TANPA INTERNET DALAM PEMBELAJARAN BERBASIS CONTEXTUAL TEACHING LEARNING (CTL) PADA POKOK BAHASAN RUANG DIMENSI 3 (Studi Eksperimen di MA Al-Ishlah Bobos Dukupuntang Cirebon)

Analisis Perbandingan Tingkat Kompetensi Siswa antara yang Menggunakan Internet dan Tanpa Internet dalam Pembelajaran Berbasis Contextual Teaching Learning (CTL) Pada Pokok Bahasan Ruang Dimensi 3 Penelitian eksperimen ini bertujuan untuk membuktikan apakah peningkatan tingkat kompetensi dan respon belajar siswa yang diajarkan melalui penggunaan internet dalam pembelajaran berbasis CTL lebih tinggi dari pada peningkatan tingkat kompetensi dan respon belajar siswa yang diajarkan dengan pembelajaran berbasis CTL tanpa internet pada pokok bahasan ruang dimensi 3. Populasi yang diperoleh adalah seluruh kelas X MA Al-Ishlah Bobos tahun ajaran 2014/2015 berjumlah 60 siswa. Menggunakan tekhnik non probability sampling diperoleh 2 kelas menjadi sampel penelitian yaitu kelas eksperimen (X-B) dan kelas kontrol (X-A). Berdasarkan data yang diperoleh, nilai rata-rata tingkat kompetensi siswa kelas eksperimen adalah sebesar 0,52, nilai tersebut lebih tinggi dari pada nilai rata-rata pada kelas kontrol yang hanya sebesar 0,35. Peningkatan kompetensi siswa kelas eksperimen adalah sebesar 52% sedangkan kelas kontrol sebesar 35% dengan selisih kanaikkan sebesar 17%. Kedua kelas diuji beda dengan uji independen t-test diperoleh nilai signifikan kompetensi siswa sebesar 0,000 < 0,05 dan nilai signifikansi respon siswa sebesar 0,000 < 0,05, berarti peningkatan tingkat kompetensi dan respon belajar siswa yang diajarkan melalui penggunaan internet dalam pembelajaran berbasis CTL lebih tinggi dari pada peningkatan tingkat kompetensi dan respon belajar siswa yang diajarkan dengan pembelajaran berbasis CTL tanpa internet pada pokok bahasan ruang dimensi 3

Determination of substantial chemical compounds of agarwood oil for quality grading

Agarwood is a resin saturated heartwood producing its ownessential oil. This oil comprises of a complex mixture of chromone derivatives, oxygenated sesquiterpenes and sesquiterpene hydrocarbons. This mixture has a heavy woody scentand is one of the contributors to the Agarwood oil quality. In this paper, a study that focuses on the approach to select the substantial chemical compounds for Agarwood quality grading was carried out. GC-MS analysis was used to extract the chemical compounds from the Agarwood oil. The data were then pre-processed using techniques such as missing values ratio, natural logarithm and min. max. normalization. Next, synthetic data were generated using MUNGE to fulfil the passing condition of sampling adequacy test. To determine the substantial compounds, PCA and Pearson’s correlation were used. This approach was successful in determining three substantial compounds namely β-agarofuran, α-agarofuran and 10-epi-γ-eudesmol. These substantial chemical compounds will be used later to predict the quality of Agarwood oil

Influence of the Reflex Math Fact Fluency Program on Math Scores

Researchers have shown a correlation between students’ math fact fluency and their achievement in higher-level math. The problem investigated by this study was that 59% of students in intermediate elementary grades at the local school were not proficient in math. Guided by Miller’s information processing theory, the purpose of this quantitative, causal-comparative study was to examine the influence of the Reflex Math Fact Fluency Program on 2nd graders’ math achievement scores (as a whole group and by gender) after 1 school year of program use. Archival data was purposefully sampled for 98 2nd grade students (n = 50 boys; n = 48 girls) who were continuously enrolled for the entire 2018-19 school year and completed both the Fall 2018 and Spring 2019 Star Math Assessments prior to and following exposure to the Reflex Math Fact Fluency Program. Results of a repeated measures t test showed students’ scores after using the program for 1 school year were significantly higher than the same students’ scores before the program. Additionally, a mixed-design ANOVA revealed a significant interaction effect such that girls’ scores before the program were higher than the boys’ scores but were lower than the boys’ scores after the program. Findings suggest that the Reflex Math Fact Fluency Program can be a valuable tool for elementary level students, especially boys, who are learning basic math skills. Implications for positive social change include providing the school’s stakeholders with a policy recommendation that may influence students’ access to additional instructional opportunities in math which could, in turn, lead to improved student achievement in math over time

Radio frequency interference in microwave radiometry: statistical analysis and study of techniques for detection and mitigation

Microwave radiometry field has been increasing its performance with higher accuracy measurements, leading to a more presence in the remote sensing field. Several space-borne, air-borne and ground-based radiometers have been developed to perform measurement campaigns; however, the actual sensitivity of a radiometer is often limited by man-made radio emissions such as radars, broadcasting emissions, wireless communications and many other communication systems based on electromagnetic waves, limiting the improvement in the radiometers¿ performance. Consequently, in order to maintain the accuracy in the radiometric measurements, it has been researched in the Radio Frequency Interference (RFI) detection and mitigation systems and algorithms for the microwave radiometry field. The scope of this doctoral thesis is the development and testing of RFI detection and mitigation algorithms in order to enhance radiometric measurements performed by the Multifequency Experimental Radiometer with Interference Tracking for Experiments over Land and Littoral (MERITXELL). The MERITXELL has been developed during this thesis with the idea studying the RFI present in several radiometric bands and the way to mitigate it, as well as to obtain data from diverse frequency bands and devices in only one measurement campaign