Judul: Interpersonal Communication Barriers among International Students at Graduate School of Bogor Agricultural University
Abstrak: This study focused on interpersonal communication barriers, the sociocultural and language difficulties of adaptation among international students can lead to academic issues. and aimed to identify the barriers and factors which influence interpersonal communication among international students and to examine the extent to which these factors have affected international students’ adaptation to cultural transition in learning and living in the Bogor agricultural University. This study involved both quantitative and qualitative methods. The quantitative component utilized data collected through semi structured questionnaires on 40 International students representing international students from postgraduate school of Bogor agricultural University, the qualitative component of this research utilized interviews method, while the data analysis techniques used to answer the research hypothesis is statistical analysis with SPSS and correlation. The study reached to many results, the most important of them are, there was a significant difference with respect to Characteristics of individuals in the perception of barriers to interpersonal communication among international students, though there was a significant difference in opinion among international students regarding various dimensions of academic adaptation. The majority of international students mentioned that barriers were due to the source of communication especially in Indonesian language, where 77% student are bad in speaking Indonesian language, and 80% of international students speak English very well. in addition, the results revealed that, around (54%) student find slight difficulty to understand and accept the Indonesian culture, and Correlation between GPA and Proficiency of English language was significant while in Proficiency of Indonesian language was not significant.
Keyword: Academic Adaptation, Cultural Barriers, Language Barriers, Sociocultural Adaptation

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: Sintesis dan Pencirian Natrium Titanat (Na2Ti2O4(OH)2) Berbahan Dasar Titanium Dioksida
Abstrak: TiO2 can be utilized as basic material for synthesis of sodium titanate (Na2Ti2O4(OH)2). This research was purposed to synthesize and characterize sodium titanate from TiO2 rutile powder as a basic material. Sodium titanate was synthesized by hydrothermal process at temperature 130 °C by mixing TiO2 rutile powder with 5 M and 10 M NaOH solution, then each was calcinated at temperature 700 °C. The energy dispersive X-ray analysis showed that sodium titanate has been successfully synthesized. This result was also supported by functional group analysis with Fourier transform infrared (FTIR) spectrofotometer showing the existence of Ti-O-Na vibration band at 989.42 cm-1. The formation of sodium titanate was depend on the reaction condition such as temperature, reaction time, and NaOH concentration. Scanning electron microscope image indicated that sodium titanate synthesized at 130 °C in 20 hours reaction time with 10 M NaOH had crystal size of 99.37 nm.
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