Thermocouples are mainly used for accurate temperature measurements, but they can also be used for the generation of electric energy at low voltage and low power. If inserted into wearable garments, these thermocouples can be used to supply the electric energy required by portable electronic devices. The heat from the human body gives rise to a temperature gradient which can be converted into electric power. In this article, we study the possibility to create a thermocouple and thermopile from pure conductive textile yarns. Among the materials tested, nickel-coated carbon fiber in combination with stainless steel yarn, polypyrrole-coated carbon fiber, or carbon fiber has good potential to be a textile-based thermocouple. We also successfully made a 10-pair carbon fiber-nickel-coated carbon fiber junction thermopile from a single nickel-coated carbon fiber yarn by removing the nickel selectively through etching process.

Penelitian ini merupakan jenis penelitian pre-eksperimental design, dikatakan pre-eksperimental design karena penelitian ini belum merupakan eksperimen sungguh-sungguh. Desain penelitian yang digunakan yaitu One-Group Pretest-Posttest Design yaitu eksperimen yang dilaksanakan pada satu kelompok saja tanpa kelompok pembanding. Pada desain ini menggunakan pretest sebelum diberi perlakuan. Dengan demikian, hasil perlakuan dapat diketahui lebih akurat, karena dapat membandingkan keadaan sebelum perlakuan. Populasi dalam penelitian ini adalah seluruh mahasiswa pendidikan guru sekolah dasar semester empat tahun ajaran 2018/2019 yang berjumlah 360 mahasiswa yang terdiri dari 9 kelas. Sampel diambil secara random atau acak karena terdiri dari 9 kelas dan yang terpilih menjadi sampel dalam penelitian ini adalah Mahasiswa PGSD kelas IV F yang berjumlah 43 mahasiswa. Berdasarkan hasil analisis data deskriptif  menunjukkan bahwa rata-rata hasil belajar matematika sebelum penerapan Model Pembelajaran Paikem Gembrot adalah 50,35 sedangkan rata-rata hasil belajar matematika setelah penerapan Model Pembelajaran Paikem Gembrot adalah 79,19. Adapun analisis statistik inferensial untuk instrumen dalam bentuk tes menunjukkan nilai  dan nilai  sehingga nilai F yang dicari = 1,56. Dengan demikian > atau F > 1, berarti Model Pembelajaran Paikem Gembrot efektif dalam meningkatkan hasil belajar matematika pada mahasiswa kelas IV F.

The problem of teacher turnover, especially private teachers is a quite worrying in Indonesia and other developing countries. The high rate of teacher turnover will disrupt the achievement of educational goals. The main objective of this study was to see the effect of reward and job satisfaction on teachers' turnover intentions. This study uses a quantitative approach with a survey method. The sample of the study was all private junior high school teachers in Rokan Hulu District, consisting of 235 people selected from 20 schools. Samples size determination was done by using Slovin formula. The sample was taken by using simple random technique. Based on the results of calculations, it is known that the number of sample size in this study was 149 participants. Data collection technique used a Likert scale questionnaire. The questionnaire was first tested for its validity and reliability. The results of the study showed that there is a direct negative effect of rewards on turnover intention, and there is a direct negative effect of job satisfaction on turnover intention and lastly there is a direct positive effect of reward on job satisfaction.

ACDP (Analytical and Capacity Development Partnership) data suggests that 10% of teachers did not attend school and 14% of those attending did not attend the class. This number indicates the teacher is not satisfied with their work. Teacher job satisfaction needs to be improved so that education can run better. Teachers who are satisfied at work will feel happy with their work, happy with the work environment and so on. Unsatisfied teachers can cause low performance and even increase the desire to move or stop working. Therefore, efforts need to be made to optimize teacher work satisfaction. Two ways that can be done to improve teacher job satisfaction are by giving appropriate rewards and increasing motivation.

Thermocouples made of etched and non-etched nickel-coated carbon yarn (NiCCY) were investigated. Theoretic Seebeck coefficients were compared to experimental results from measurements of generated electric voltage by these thermocouples. The etching process for making thermocouples was performed by immersion of NiCCY in the solution containing a mixture of hydrochloric acid (HCl) (37% of concentration), and hydrogen peroxide (H2O2) in three different concentrations—3%, 6%, and 10%. Thirty minutes of etching to remove Ni from NiCCY was followed by washing and drying. Next, the ability to generate electrical voltage by the thermocouples (being a junction of the etched and the non-etched NiCCY) was measured in different ranges of temperatures, both a cold junction (291.15–293.15 K) and a hot junction (293.15–325.15 K). A formula predicting the Seebeck coefficient of this thermocouple was elaborated, taking into consideration resistance values of the tested samples. It was proven that there is a good agreement between the theoretical and experimental data, especially for the yarns etched with 6% and 10% peroxide (both were mixed with HCl). The electrical resistance of non-fully etched nickel remaining on the carbon fiber surface (R1) can have a significant effect on the thermocouples’ characteristics.

Guru dan tenaga kependidikan perlu memiliki perilaku kerja inovatif agar tujuan pendidikan dapat dicapai secara optimal. Apalagi saat pandemi covid-19 ini, sangat diperlukan guru dan tenaga kependidikan yang memiliki inovasi dalam bekerja. Kajian perilaku kerja inovatif di Indonesia lebih dominan di teliti pada organisasi yang menghasilkan produk atau perusahaan. Tujuan penelitian ini adalah untuk menganalisis variabel-variabel apa saja yang mempengaruhi dan dipengaruhi oleh variabel perilaku kerja inovatif dalam lembaga pendidikan serta bertujuan untuk mengetahui bentuk inovasi yang dilakukan guru dan tenaga kependidikan dalam melaksanakan kegiatan belajar mengajar. Metode penelitian ini menggunakan kajian kepustakaan. Artikel yang dikaji dalam penelitian ini adalah artikel yang dipublikasikan dari tahun 2017. Pencarian dilakukan dengan google scholar menggunakan kata kunci perilaku kerja inovatif dan innovative work behavior. Hasil pencarian ditemukan 27 artikel pada jurnal atau prosiding nasional dan internasional. Berdasarkan hasil penelitian ditemukan enam belas variabel yang mempengaruhi perilaku kerja inovatif guru atau tenaga kependidikan. Enam variabel menjadi variabel intervening untuk melihat perilaku kerja inovatif. Variabel perilaku kerja inovatif mempengaruhi dua variabel, yaitu kinerja dan Organizational Citizenship Behavior (OCB). Perilaku kerja inovatif juga menjadi variabel intervening dari variabel hard skill, soft skill, organisasi pembelajar dan motivasi yang mempengaruhi kinerja. Selain juga ditemukan perilaku inovasi guru dalam melaksanakan pembelajaran.

Energy currently has a crucial role in human life. So far, the primary buffer of energy needs still relies on petroleum. Meanwhile, petroleum is inevitably increasingly scarce and expensive. With the state of the depletion of fossil energy sources, in today's world, there is a shift from the use of non-renewable energy sources to renewable energy sources. Of the many renewable energy sources, the use of energy through solar cells is the most potent alternative to applied in Indonesia. Solar energy is one of the energies currently actively developed by the Indonesian government because as a tropical country, Indonesia has considerable solar energy potential. Solar energy is extraordinary because it is not a pollutant, cannot use up, can trust and does not buy. There are many ways to harness energy from the sun. The electricity we can use today is electricity produced from the process of burning fossil fuels such as coal, oil or natural gas. The combustion results will produce carbon dioxide gas which can damage or adversely affect the environment. Solar electricity can provide electricity continuously because its energy source is a renewable energy source and is also a clean and environmentally friendly energy, to reduce greenhouse gas emissions. Besides, solar electricity can provide electricity quickly and does not require individual costs for maintenance and can provide electricity needs in rural areas, isolated areas, and islands that not electrified by the government.

Perkembangan teknologi informasi yang semakin pesat memberi pengaruh yang besar, Salah satunya adalah kriptografi dimana pesan disamarkan menjadi pesan tersandi. Dalam proses penyandian, penyandian yang digunakan adalah Enigma dan RSA (Rivest Shamir Adleman) . Dimana Enigma sebagai proses penyandian simetris pada pesan dan RSA (Rivest Shamir Adleman) sebagai proses penyandian asimetris pada kunci sehingga terjadinya Kriptografi Hybrid. Kriptografi Hybrid sebenarnya metode yang sangat aman dikarenakan memakai dua jenis algoritma yaitu algoritma simetris dan asimetris, untuk algoritma simetris Ciphertext yang dihasilkan akan sama panjang dengan Plaintext yang di enkripsi, lain halnya dengan algoritma asimetris yang berfungsi hanya untuk proses enkripsi kunci pada penelitian ini, karena jika algoritma asimetris dipakai untuk enkripsi maka Ciphertext yang dihasilkan akan lebih besar jumlah datanya.