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FITRIA, NOVI
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PREDICTION OF HIGHER HEATING VALUE OF VARIOUS BIOMASSES USING THE EQUATION FOR THE HYDROTHERMAL CARBONIZATION METHOD ON BANANA BUNCHES Sulaiman, Sani Maulana; Nugroho, Gunawan; Putra, Herlian Eriska; Fitria, Novi; Sukmawati, Wina Ike
Jurnal Reka Lingkungan Vol 12, No 1 (2024)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekalingkungan.v12i1.81-92

Abstract

When designing many variables influence the thermal conversion system for homogeneous biomass and heterogeneous biomass. The factor that can have an important influence is the higher the calorific value (HHV). Many correlation models have been developed to estimate the HHV of homogeneous and heterogeneous biomass to reduce analysis costs. Unfortunately, the correlation model for predicting biomass HHV still has shortcomings when predicting biomass data from different thermal conversion processes and different types of biomass. In this study, four new correlations based on proximate and ultimate analysis of homogeneous biomass with the hydrothermal carbonization (HTC) method used for HHV prediction are presented. The multiple linear regression method is used to produce correlations from homogeneous biomass data then compare biomass models from open literature and compare correlation accuracy for data from the literature. It was found that the correlation obtained from proximate analysis (HHV =967.171 -8.684Ash -9.299VM -9.913FC) was more accurate than that obtained from proximate.
Students' opinion on the transition from EFL to ELF: Revisiting English pedagogy in vocational higher education Sariani, Sariani; El Khairat, Mutia; Marzuki, Dony; Fitria, Novi; Damaiyanti, Muthia; Astuti, Indri; Binti Yusof , Ts Ummu Hani
JEES (Journal of English Educators Society) Vol 11 No 1 (2026): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/jees.v11i1.1973

Abstract

As workforce diversity increases in the globalization era, vocational education plays a crucial role in preparing students to be competent and industry-ready, with English serving as a key medium for professional integration. English as a Lingua Franca (ELF) has emerged as a flexible mode of communication, facilitating interaction not only between native and non-native speakers but also among non-native speakers from varied linguistic backgrounds. This study examines the perceptions of Indonesian Vocational Higher Education (VHE) students regarding the role and relevance of ELF in meeting global workplace communication demands. Participants consisted of sixty-nine sixth-semester English majors who had completed two- to three-month internships in various industries. Data were collected through a five-point Likert-scale questionnaire and semi-structured interviews, enabling both quantitative and qualitative insights. Statistical analysis using a t-test, following the Shapiro-Wilk normality test, revealed mean differences ranging from M = 2.95 (Q10) to M = 4.28 (Q14). These findings were supported by interview data, indicating that most participants viewed ELF as more suitable for workplace communication than traditional English as a Foreign Language (EFL) norm. The study highlights the need to align English Language Teaching (ELT) in vocational education with ELF-oriented principles to enhance communicative effectiveness in global professional settings.
Co-Authors Agie Adhitya Gunawan Alam, Firdha Cahya Alam, Vania Aramintana Binti Yusof , Ts Ummu Hani Desy Rahmadani Telaumbanua Dony Marzuki El Khairat, Mutia Elkhairat, Mutia Gunawan Nugroho Herlian Eriska Putra Indri Astuti Istiqomah Shariati Zamani Keukeu Kaniawati Rosada Lilimiwirdi, Lilimiwirdi LINDASARI, EVA LINDASARI, EVA M. Faisi Ikhwali Marcelina Jelsih Muthia Damaiyanti Putra, Herlian Eriska Rifka Noor Azizah Roni Tri Putra Royana Chairani Rusdi Hasan Sariani, Sariani SETIAWATI, FUJI Sukatik Sukatik Sukmawati, Wina Ike Sulaiman, Sani Maulana Tiny Agustini Koesmawati Umi Hamidah Wisnu Prayogo Wisnu Prayogo Yaningsih, Yaningsih