Judul: The Effect of Self-Efficacy, Self-Directed Learning Readiness, Academic Motivation, and Self-Regulated Learning towards Academic Stress Undergraduate Student
Abstrak: Pembelajaran daring yang pada masa Covid-19 mengakibatkan mahasiswa mengalami stres akademik. Penelitian ini bertujuan untuk menganalisis pengaruh karakteristik individu, karakteristik keluarga, efikasi diri, kesiapan belajar mandiri, motivasi akademik, dan pengaturan diri dalam belajar terhadap stres akademik pada mahasiswa. Penelitian ini menggunakan desain eksplanatori yang melibatkan 238 mahasiswa di salah satu perguruan tinggi di Bogor. Penelitian ini dilakukan secara daring dengan teknik purposive sampling. Hasil uji menunjukkan hubungan antara jenis kelamin dengan beberapa variabel. Laki-laki lebih rendah dari perempuan dalam efikasi diri, kesiapan belajar mandiri, dan pengaturan diri dalam belajar. Laki-laki juga lebih rendah dari perempuan dalam tingkat stres akademik. Selain itu, usia mahasiswa berhubungan negatif signifikan dengan motivasi akademik. Hasil uji regresi linier berganda menunjukkan bahwa jenis kelamin, efikasi diri, dan motivasi akademik berpengaruh negatif signifikan terhadap stres akademik sedangkan pengaturan diri dalam belajar berpengaruh positif signifikan terhadap stres akademik., Online learning during the Covid-19 period resulted in students experiencing academic stress. This study aims to analyze the effect of individual characteristics, family characteristics, self-efficacy, readiness for independent learning, academic motivation, and self-regulation in learning on academic stress in students. This study used an explanatory design involving 238 students at a university in Bogor. This research was conducted online using a purposive sampling technique. The test results show a relationship between gender and several variables. Men are lower than women in self-efficacy, self-directed learning readiness, and self-regulated learning. Boys are also lower than girls in terms of academic stress. In addition, student age has a significant negative relationship with academic motivation. The results of multiple linear regression tests show that gender, self-efficacy, and academic motivation have a significant negative effect on academic stress, while self-regulated learning has a significant positive effect on academic stress.
Keyword: academic motivation, academic stress, self-directed learning readiness, self-efficacy, self-regulated learning

Judul: The Influence of Self-Efficacy, Self-Regulated Learning, and Procrastination towards Academic Stress of High School Students during the Covid-19 Pandemic
Abstrak: Pembelajaran online dampak dari pandemi Covid-19 berpotensi memicu munculnya stres akademik. Penelitian ini bertujuan untuk menganalisis hubungan antar variabel dan pengaruh karakteristik siswa dan keluarga, self-efficacy, self-regulated learning, dan prokrastinasi terhadap stres akademik siswa SMA di Kabupaten Banyuwangi. Penelitian ini menggunakan desain eksplanatori dan teknik purposive sampling dengan sampel sejumlah 142 siswa yang berusia 15-18 tahun. Diketahui terdapat hubungan positif signifikan antara self-efficacy dengan self-regulated learning dan antara prokrastinasi dengan stres akademik. Selain itu, terdapat hubungan negatif signifikan antara self-efficacy dengan prokrastinasi akademik, self-efficacy dengan stres akademik, self-regulated learning dengan prokrastinasi akademik, serta self-regulated learning dengan stres akademik. Hasil uji pengaruh menunjukkan bahwa self-efficacy berpengaruh negatif signifikan terhadap stres akademik yang berarti tingginya self-efficacy dapat menurunkan tingkat stres, serta prokrastinasi berpengaruh positif signifikan terhadap stres akademik., Online learning as a result of the Covid-19 pandemic has the potential to trigger academic stress. This research aims to analyze the relationship between variables and the effect of student and family characteristics, self-efficacy, self-regulated learning, and procrastination on high school students' academic stress in Banyuwangi Regency. This research used an explanatory design and purposive sampling technique to obtain a sample of 142 students aged 15-18 years. It is known that there is a significant positive relationship between self-efficacy and self-regulated learning and between procrastination and academic stress. In addition, there is a significant negative relationship between self-efficacy and academic procrastination, self-efficacy and academic stress, self-regulated learning and academic procrastination, also self-regulated learning and academic stress. The results of the influence test show that self-efficacy has a significant negative effect on academic stress, which means that high self-efficacy can reduce stress levels, and procrastination has a significant positive effect on academic stress.
Keyword: ovid-19, prokrastinasi, self-efficacy, self-regulated learning, stres akademik

Judul: Hydrothermal Synthesis of Biphasic Calcium Posphate
Abstrak: Biphasio calsium phosphate (BCP), which was a mixture of hydroxypatite (HA) and tricalcium phosphate (TCP), was synthesized by hydrothermal method followed by sintering process. Hydroxyapatite was produced by using natural calcium source CaO from hen's eggshell and (NH4)2HPO4 as phosphate souce, other hydroxyapatite sample was produce by using synthetic calcium source Ca(OH) and H3PO4 as phosphate source.
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