Judul: Factors Affecting Bogor Agricultural  University Students' Academic Achievement in Online and Offline Learning
Abstrak: Meski pandemi Covid-19 telah berlalu, penerapan pembelajaran daring sebagian masih terus berlanjut. Alasan utamanya adalah, sistem ini memiliki fleksibilitas yang tinggi serta infrastruktur penunjangnya semakin baik, sehingga sistem perkuliahan hibrid menjadi suatu pilihan. Keberhasilan aktivitas perkuliahan tidak saja ditentukan oleh sistem perkuliahan yang digunakan namun terdapat faktor lainnya, baik dari sisi mahasiswa maupun institusi pendidikan, seperti faktor inteligensi, motivasi, kebiasaan, emosi, lingkungan belajar, lingkungan sosial, sarana kampus, dan sarana daring. Penelitian ini ditujukan untuk menguji pengaruh faktor-faktor tersebut terhadap prestasi belajar. Penelitian ini melibatkan 170 mahasiswa S1 Institut Pertanian Bogor yang mengikuti kuliah daring dan luring. Pengumpulan data dilakukan melalui voluntary sampling techniques, dimana kuesioner disampaikan melalui media sosial kepada target responden. Structural Equation Modeling digunakan untuk menduga koefisien model yang menjelaskan hubungan kausalitas antara prestasi belajar dengan faktor-faktor yang memengaruhinya. Hasil penelitian menunjukan, inteligensi mahasiswa menjadi faktor yang paling berpengaruh terhadap prestasi diikuti faktor lingkungan sosial., Although the COVID-19 pandemic has passed, the implementation of online learning continues partially. The main reasons are the high flexibility of this system and the improvement of supporting infrastructure, making the hybrid learning system a viable option. The success of lecture activities is not only determined by the lecture system used but also by other factors from both students and educational institutions, such as intelligence, motivation, habits, emotions, learning environment, social environment, campus facilities, and online facilities. This study aims to examine the influence of these factors on academic achievement. The study involved 170 undergraduate students from Bogor Agricultural University who participated in both online and offline learning. Data collection was conducted through voluntary sampling techniques, where questionnaires were distributed via social media to the target respondents. Structural Equation Modeling was used to estimate the model coefficients that explain the causal relationships between academic achievement and the influencing factors. The results show that student intelligence is the most influential factor on academic achievement, followed by the social environment factor.
Keyword: online learning, hasil pembelajaran, pembelajaran daring, pembelajaran efektif, prestasi mahasiswa, structural equation modeling, learning effectiveness, learning outcomes, student achievement

Judul: Dampak Pembelajaran Jarak Jauh (Distance Learning) Terhadap Pencapaian Tujuan Pembelajaran (Studi Kasus Mahasiswa S1 IPB)
Abstrak: Pembelajaran jarak jauh (online) merupakan salah satu solusi metode pembelajaran pada saat pandemi Covid-19. Namun demikian, hasil dari beberapa penelitian mengungkapkan bahwa pembelajaran jarak jauh dapat berdampak negatif terhadap pencapaian tujuan pembelajaran. Berdasarkan informasi tersebut, penelitian ini ditujukan untuk mengungkap lebih jauh faktor-faktor lain yang diduga mempengaruhi pencapaian tujuan pembelajaran yang dilakukan secara online. Penelitian ini melibatkan 201 mahasiswa S1 IPB yang pernah mengikuti kuliah offline dan online yang dipilih secara purposive voluntary sampling technique. Sementara itu Structural Equation Model (SEM) digunakan sebagai basis analisis untuk menduga koefisien model kausalitas antar faktor. Hasil penelitian menunjukkan bahwa pembelajaran secara online signifikan menurunkan kemampuan mahasiswa dalam mencapai tujuan pembelajaran. Dari lima faktor yang mempengaruhi kinerja pembelajaran online, tiga diantaranya yaitu: faktor karakteristik mahasiswa, karakteristik dosen, dan motivasi memiliki pengaruh positif, baik terhadap pembelajaran secara online maupun pencapaian tujuan pembelajaran. Sebaliknya, faktor lingkungan secara langsung berdampak negatif terhadap pembelajaran secara online maupun pencapaian tujuan pembelajarannya. Sedangkan teknologi secara langsung berdampak negatif terhadap pembelajaran secara online dan berdampak positif terhadap pencapaian tujuan pembelajaran. Sehingga secara agregat faktor teknologi dan lingkungan masih belum mampu mendukung pencapaian tujuan pembelajaran yang dilakukan secara online., Distance learning (online) is one of solution to the learning method during the Covid-19 pandemic. However, the results of several studies reveal that distance learning can have a negative impact on the achievement of learning objectives. Based on this information, this research is aimed to reveal further of the other factors that influence online learning objectives. This study involved 201 IPB undergraduate students who had attended offline and online lectures selected by purposive voluntary sampling technique. Meanwhile, the Structural Equation Model (SEM) is used as the basis of analysis to estimate the coefficients of the causality model between factors. The results showed that online learning significantly reduced students' ability to achieve learning objectives. Of the five factors that influence online learning performance, three of them: students characteristic, lecturer characteristics, and students motivation have a positive influence, both on online learning and learning objectives. On the other hand, environmental factors directly have a negative impact on learning and learning objectives. Meanwhile, technology has also a negative impact on online learning but has a positive impact on educational learning objectives. So that in aggregate, technological and environmental factors are still not able to support the learning objectives carried out online.
Keyword: distance learning (online), learning objectives, online structural   learning model (SEM), voluntary sample

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4