bluuebunny/crossref_metadata_2025_split huggingface dataset:
SISTEM PENGATUR GORDEN PADA LAMPU BERBASIS PLC
Authors: Hartono Budi Santoso  , Agoeng H Rahardjo  , Risa Utami Arsaf  
Published: November 2021

When we leaving house in the empty situation which usually let the lamp on make wasting the energy we used and invited wickedness like robbing. Based on this situation the author create some device which give a savety when leaving house. Function of this device are to control curtain and lamp automatically. So we can spit people that
house not empty. The principle of this device is if user turn on the system with press the push button then at the sun rise curtain automatally open until the lamp will off, and the other way curtain will automatically close and lamp will be on at the sunset. The system consists of two subsystem: motor and railway curtain track. The whole system is
controlled by PLC type OMRON CPM 1A. LDR is a sensor to detect the light which places in out site room. Limit switch placed at the end of railway curtain track which used to stop the motor. After testing, we know that the system need 3 minutes for open the curtain and 5 minutes 20 second for close the curtain.
PELUANG PENGHEMATAN ENERGI PADA BILLBOARD UKURAN SEDANG DAN BESAR SE-KOTA BANDUNG
Authors: Sapto Parjogo  
Published: November 2021

Billboard is the type of outdoor advertising. For this reasonable effectiveness of the billboards were placed and selected on the road that has high traffic density. Furthermore, in order to attract attention, the billboard is equipped with powerful lights large enough to get eye catching effect. At certain hours of relatively low traffic density, so that the expected level of effectiveness of billboards as a function of promotion will also be decreased. In these conditions for reasons of energy saving light energy should be reduced or even turned off. The problem is what time the street has low traffic density. Based on these reasons, it is necessary to conserve energy on billboards as the city of Bandung by conducting a review the level of traffic density per hour and determine the feasibility level of energy use electricity for lighting
Billboards.
TEKNIK SWITCHING UNTUK KONVERSI ENERGI DC EFISIENSI TINGGI
Authors: S P Mursid  
Published: November 2021

Konversi energi listrik DC dengan menggunakan konverter linier memiliki kelemahan utama yaitu hanya dapat mengkonversikan dari tegangan tinggi ke tegangan lebih rendah dengan disipasi daya relatif tinggi. Sampai saat ini beragam perangkat pengkonsumsi energi listrik, khususnya perangkat elektronik, misih banyak menggunakan konverter linier. Kelemahan pada konverter linier dapat diatasi dengan menggunakan teknik konverter switching. Kelebihan utama dari konverter switching adalah
kemampuannya untuk melakukan konversi tegangan DC dua arah yakni menaikkan tegangan dan juga menurunkan tegangan. Kelebihan penting lainnya adalah efisiensi konversi energi yang sangat tinggi. Dalam diskusi akan diberikan perbandingan peluang rugi - rugi pada konversi linier, konsep dasar konverter switching dan contoh merercanakan konversi energi listrik DC menggunakan konverter switching.
POTENSI PLTMH PADA FASILITAS BPT MILIK PDAM - SUATU STUDI KASUS DI PDAM KABUPATEN WONOGIRI
Authors: Wahyu Budi Mursanto  
Published: November 2021

Sumber air minum untuk suatu kota atau daerah, banyak yang berasal dari sumber air yang berada di pegunungan. Dikarenakan letaknya yang cukup tinggi, untuk mengalirkan air tersebut pihak PDAM menggunakan pipa - pipa tertutup secara gravitasi. Jika jarak pengalirannya cukup jauh, maka pipa – pipa tersebut dilengkapi dengan Bak Pelepas Tekanan (BPT). Fungsi dari BPT adalah melepaskan energi air yang ada di pipa bertekanan agar tidak merusak atau memecahkan pipa. Pada penelitian ini akan dihitung potensi energi air yang ada pada suatu BPT untuk dimanfaatkan sebagai PLTMH. Sebagai studi kasus, dipilih salah satu BPT milik PDAM Kabapaten Wonogiri, Jawa Tengah yang mempunyai fasilitas pompa sumur dalam yang digerakkan dengan motor listrik (14,92 kW) yang energi listriknya berasal dari genset diesel (23,87 kW). Air dari sumur dalamvtersebut digunakan untuk menambah pasokan air minum pada saat musim kemarau. Hasil penelitian memperlihatkan bahwa ditemukan solusi untuk menggantikan mesin genset diesel dengan PLTMH yang menggunakan turbin pelton maupun crossflow. Pemilihan penggunaan turbin crossflow untuk penelitian ini, karena turbin ini mampu memenuhi spesifikasi yang diinginkan, harganya lebih murah serta diproduksi secara lokal di lndonesia.
ALIRAN DUA FASA LIQUID-GAS PADA PIPA HORIZONTAL DIAMETER 46 MM
Authors: Arya Wulung  , Antariksa Pebriani  
Published: November 2021

Boiler merupakan alat yang berfungsi untuk memanaskan air menjadi steam. Pada saat boiler bekerja akan terbentuk gelembung uap air yang terkadang terperangkap dalam boiler, sehingga dapat mengurangi efisiensi suatu boiler. Dari contoh kasus tersebut, maka dengan pemahaman aliran dua fasa akan didapatkan parameter kualitatif dalam perancangan berbagai aplikasi yang menggunakan sistem aliran dua fasa, baik untuk sistem adiabatik maupun sistem dengan perubahan fasa seperti pada boiler dan kondensor. Penelitian ini bertujuan membuat visualisasi gambar pola aliran pipa horizontal saat aliran dua fasa dalam pipa. Selanjutnya, mendeskripsikan bentuk - bentuk gelembung yang ditemukan dalam aliran dengan metode eksperimen. Hasil visualisasi pola aliran dua fasa pada kecepatan supervisial liquid (USL) dengan range yang sama USL 0,l93 meter per detik sampai 0,256 meter per detik untuk ke empat jenis aliran USG : 0,88 meter per detik sampai 1,7 meter per detik membentuk pola aliran bubble, pada USG : 1,7 meter per detik sampai 2,3 meter per detik membentuk pola aliran kantong, pada USG : 6,7 meter per detik sampai 8,7 meter per detik membentuk pola aliran strata gelombang dan pada USG : 3,2 meter per detik sampai 5,8 meter per detik membentuk pola aliran peluru. Namun, dalam eksperimen tersebut tidak ditemukan aliran gelembung gelang seperti yang telah disebutkan Weisman.
PEMBERIAN PRA-PERLAKUAN (PRE-TREATMENT) PADA ECENG GONDOK SEBAGAI BAHAN BAKU DALAM PEMBUATAN BIOGAS
Authors: Purwinda Iriani  
Published: November 2021

Pembuatan biogas merupakan salah satu upaya diversifikasi proses pengadaan sumber energi terbarukan yang saat ini pengembangan teknik dalam kombinasi bahan baku biomassa dan kotoran sapi masih terus dilakukan. Pada penelitian ini, dilakukan produksi biogas dengan tujuan mengukur pengaruh pemberian pra-perlakuan pada
eceng gondok terhadap potensi energi yang dihasilkan, dibandingkan pada eceng gondok yang tidak diberi pra-perlakuan (kontrol). Dilakukan dua jenis pra-perlakuan yaitu pra-perlakuan secara fisik (dengan menggunakan pengeringan alami oleh cahaya matahari) dan kimiawi (perendaman bahan baku menggunakan NaOH 3%). Bahan baku yang digunakan adalah campuran eceng gondok dan kotoran sapi dengan perbandingan komposisi 3:1. Pembuatan biogas dilakukan di dalam digester 19 L dengan menggunakan fermentasi anaerob dengan sistem batch dengan waktu inkubasi selama 42 hari pada suhu ruang. Hasil penelitian menunjukkan bahwa nilai potensi energi paling tinggi diperoleh pada digester dengan pra-perlakuan kimia dengan nilai 1618,77 kJ per liter di hari ke-10, sedangkan pada digester pra-perlakuan fisik adalah 1146,22 kJ per liter di hari ke-6 dan pada kontrol adalah 1412,95 kJ per liter.
DAMPAK VIBRASI MEKANIK TERHADAP KONSUMSI LISTRIK MOTOR INDUKSI POMPA AIR PENDINGIN
Authors: Conny K Wachjoe  , Metius Zingiber Sianturi  
Published: November 2021

Pompa air pendingin merupakan komponen pendukung vital pada pembangkit listrik tenaga air (PLTA), sehingga pompa air pendingin harus bekerja optimal setiap saat. Penggerak pompa air pendingin dihasilkan melalui motor listrik. Pada sistem pompa air dengan kapasitas besar, motor dan pompa air terhubung dengan poros kopling agar selalu lurus (align) antar ke duanya. Keausan pada bearing dan dudukan motor dan pompa akibat putaran akan meningkatkan vibrasi mekanik. Energi mekanik yang dibangkitkan motor listrik ke pompa air dipengaruhi oleh tingkat vibrasi mekanik yang timbul. Dampak vibrasi mekanik terhadap kinerja motor listrik kapasitas I50 kW dicermati melalui studi kasus yang dilakukan pada Unit I PLTA Cirate. Metode pengamatan dilakukan melalui perangkat vibration analyzer terpasang dibandingkan dengan standar vibrasi mekanik ISO 10816-3. Dampak vibrasi mekanik terhadap umur mesin dan konsumsi energi listrik didekati berdasarkan pendekatan empirik pada kondisi misalignment antara motor dan pompa air. Dampak vibrasi mekanik terhadap umur mesin menunjukkan bahwa motor listrik masih dapat dioperasikan selama 15% dari umur mesin normal pada kondisi vibrasi mekanik maksimum dengan total offset sebsesar 1,0 mm per sekon. Sedangkan, dampak vibrasi mekanik terhadap konsumsi
energi motor listrik meningkat sebesar 6,92% pada konsumsi energi sebesar 122 kW pada total offset vibrasi mekanik sebesar l,61 mm per sekon.
PENGARUH PENGGUNAAN LARUTAN NaOH 1% PADA PRA-PERLAKUAN ECENG GONDOK UNTUK PRODUKSI BIOGAS
Authors: Purwinda Iriani  , Akmalurijal Asyipa  
Published: November 2021

Biogas merupakan salah satu bahan bakar terbarukan yang dapat diproduksi dengan berbagai bahan baku biomassa. Salah satu sumber biomassa yang ketersediaannya
berlimpah yaitu eceng gondok, mempunyai kandungan polisakarida berupa selulosa dan hemiselulosa cukup.tinggi, sedangkan produksi biogas membutuhkan bahan baku dengan kandungan polisakarida yang rendah. Metode pemecahan ikatan polisakarida menjadi monomer - monomernya menggunakan metode hidrolisis alkali. Produksi biogas dilakukan dengan menggunakan sistem fermentasi tipe batch secara anaerob.. Digester biogas berkapasitas 19 L dengan pra-perlakuan menghasilkan persentase CH4 paling tinggi yaitu 34,12%, dibandingkan dengan tanpa pra-perlakuan (29,77%). Total potensi energi yang dihasilkan pada produksi biogas dengan pra-perlakuan (94 kJ), dimana lebih besar 90,16% dari tanpa pra-perlakuan ( 49,43 kJ).
DEPENDENT DAN INDEPENDENT SPEAKER UNTUK KONTROL PERALATAN RUMAH TANGGA MELALUI PENGENALAN WICARA
Authors: Sri Utami  
Published: November 2021

Konsumsi energi dapat dikurangi, salah satunya dengan pengontrolan dan monitoring peralatan rumah tangga setiap waktu. Pengontrolan akan lebih efektif bila bisa dilakukan setiap saat dan melalui pengenalan wicara. Pengenalan wicara diimplementasikan untuk mengontrol dan memonitoring perlatan rumah tangga jarak jauh. Proses kontrol dilakukan dari PC client ke PC server. Sistem ini menpunyai input berupa dependent dan independent speaker. Independent speaker digunakan untuk mengetahui sistem bisa bekerja untuk speaker yang bukan merupakan speaker standar. Proses yang digunakan dalam penelitian ini adalah pengambilan sinyal, sampling frame, windowing, LPC (Linear Prediction Code). Proses - proses tersebut dinamakan sebagai proses ekstraksi. Setelah itu dilakukan proses Dynamic Time Warping (DTW) untuk memadamkan sinyal masukan dengan sinyal standar. Proses ekstraksi dan Dynamic Time Warping dilakukan pada PC client, hasilnya dikirim ke server untuk mengontrol alat yang diinginkan. Setelah alat terkontrol, perangkat keras akan memberikan feedback ke PCserver kemudian mengirimkannya ke PC client. Di PC client dapat diketahui kondisi peralatan yang dikontrol. Alat yang dikontrol adalah empat buah lampu. Sistem yang dibangun mempunyai prosentase keberhasilan rata - rata l00% dependent speaker (pengucap yang suaranya dipakai sebagai standar) dan prosentase keberhasilan rata - rata 7l,88% untuk independent speaker (pengucap yang suaranya tidak dipakai sebagai standar).
Pengaruh Receivable Turnover dan Working Capital Turnover terhadap Profitability pada Perusahaan Farmasi yang Terdaftar di BEI Periode 2014-2018
Authors: Maisa Salma , Tripuspitorini Fifi Afiyanti , Masli Lili 
Published: November 2021

This final project research is aimed to determine the effect of RTO and WCTO on ROA on pharmaceutical companies listed on the Indonesia Stock Exchange (IDX) period 2014-2018 period. The techniques are used in this research is Purposive Sampling and obtained 7 Pharmaceutical Companies on the IDX which were used as research samples. Secondary data are used in the form of company annual financial statements. The research method used are descriptive and quantitative research. The test is done by panel data regression method which is processed using eviews 10. The selected panel data regression method is the Fixed Effect Model. The results showed that simultaneously RTO and WCTO had a significant effect on profitability (ROA) of pharmaceutical companies listed on the IDX. The partial results showed that RTO had a significant negative effect on profitability (ROA) while WCTO had no significant effect on profitability (ROA) for pharmaceutical companies listed on the IDX.
An Analysis of Language Teachers’ Beliefs in Their Teaching Learning Process
Authors: Handiani Dini 
Published: November 2021

Language teachers play a very important part in language education and learning. What they do in classroom is a reflection of what they know and believe about issues related to their professional practices. Their knowledge and beliefs provide them with the underlying framework guiding their teaching learning process related to the content, approach, and evaluation of teaching and learning. The objective of this paper, therefore, was to examine the beliefs of language techers in teaching learning process. Based on the discussions and conclusions, it is recommended that the English language teachers need to have clear beliefs about their teaching learning process, and be very much willing to improve the language pedagogy through self-reflection/self-study. Key words: teaching learning process, beliefs
SPEECH ACT EXPRESSIONS IN THE ADVERTISEMENTS ON TELEVISION: A Case Study of Three Advertisements Both Food & Health Products and Cell-Phone Provider
Authors: Halim Puspita 
Published: November 2021

The study entitled “Speech Act Expressions in the Advertisements on Television: A Case Study of Three Advertisements Both Food & Health Products and Cell-phone Provider” seeks to illuminate the types of speech acts based on Searle (1979) and the approaches of advertisements proposed by Book and Schick (1996). This study mainly uses a qualitative method to analyze the collected data in this research. The data sources are in the form of verbal texts, namely, statements of the speaker’s dialogue and narration both Food & Health Product and cell-phone provider advertisements. These advertisements were taken from several private TV stations aired during 1st March – 30th April 2010. The three advertisements were selected and categorized into four styles, namely, dramatizations, demonstrations, presentations, and testimonials. These commercials were classified into three tones, namely, factual, emotional, and humorous. Furthermore, the research was conducted to investigate the types of speech acts expressed in these different styles and tones of advertisements, namely representatives, directives, commissives, expressive, and declaratives. The study has discovered three tones within testimonial, demonstration, and presentation styles. Furthermore, it has exposed one emotional tone within presentation style. And two factual tones within testimonial and demonstration styles. This research has obtained linguistic notion and comprehension for students who are engaged in learning speech act expression in several utterances, mainly advertisements. Keywords: speech act, advertisement, style, tone
A PRAGMATIC ANALYSIS OF THANKING STRATEGIES AMONG INDONESIAN EFL LEARNERS BASED ON SOCIAL STATUS AND SOCIAL DISTANCE
Authors: Kustini Siti , Sulyaningsih Iis 
Published: November 2021

This study attempts to investigate thanking strategies used by Indonesian EFL learners based on contextual factors i.e. social status and social distance. The participants were 50 semester three students studying English for Business at a state polytechnic in Bandung. The participants were both male and female, aging from 19-20 years old. Data were collected via a Discourse Completion Task (DCT) adopted from Cheng (2005) and analyzed using thanking strategy taxonomy proposed by the same author. The DCT consisted of ten different scenarios describing the most common situations that students may encounter in their college life. The results of this study indicated that the most preferred thanking strategies used by Indonesian EFL learners were thanking, alerters (i.e., title) and positive feelings. In terms of social status and social distance, the findings revealed that thanking and apology strategies were the most used strategies in equal-status with low-familiarity situations. In situations within which learners shared equal-status with high-familiarity, the most strategies employed were thanking and positive feelings. Regarding thanking strategies used in low-status with low-familiarity situations, thanking and repayment strategies seemed to be the most preferred ones. Keywords: thanking, strategies, social status, social distance
ANALISIS KUALITAS TERJEMAHAN ARTIKEL MEDIA OLEH MAHASISWA PRODI D-3 BAHASA INGGRIS POLITEKNIK
Authors: Sutantohadi Alief 
Published: November 2021

This qualitative–inductive research is conducted to identify and describe the translation technics used by the students of D-3 programe of English Department of State Polytechnics of Madiun in translating the articles from The Jakarta Post daily newspaper. This research will also analise the the quality of translation result and its relationship with the students’ competence in translation. The data in this research will be analised by using Content Analisis from Spradley. By using this technic, the data will be analised through some steps as domain analysis, taxonomic analysis, componential analysis and taking the cultural findings. The result of the quality assesment of translation shows that the students’ competence in translation is adequate. This achievement is based on the result of assesment on the accuracy and the acceptability of the translation. The assesment on the accuracy of the translation shows from total 105 data were translated accurately for 66 data (62.86%) and then 21 data (20%) were translated less accurately and the rest for 18 data (17.14 %) were translated inacurately. The assesment result on acceptability of the translation shows from total 105 data were translated acceptable for 73 data (69.52%) and then 20 data (19.05%) were translated less acceptable and the rest for 12 data (11.43%) were translated unacceptable.Key Words : the quality of translation, translation technique.
THE INVESTIGATION OF INDONESIAN EFL LEARNERS’ ERRORS ACROSS THREE PROFICIENCY LEVELS
Authors: Saudin Saudin 
Published: November 2021

The study analyzed the errors made by students across three different levels of proficiency (Advanced, Intermediate and Elementary) in their writing pieces. Three students were selected purposively to represent their respective level. So, nine pieces of writing altogether were to be investigated in this study. The errors committed by the purposive samples were first grouped into fifteen linguistic classifications such as verb form, preposition, mechanics and so forth, then subsumed under two broader categories: negative interlingual and intralingual transfer. The investigation revealed that the learners made more errors of intralingual transfer than those of negative interlingual one. However, in terms of errors based on the linguistic classifications, this study showed surprising findings. Advanced learners, though committing the least errors, performed worst by making errors in the most linguistic classifications (seven altogether): plural-singular form, omission of constituent, verb form, article, vocabulary, pronoun and comparative. Intermediate learners came next by committing errors in less number of linguistic areas (five), namely mechanics, preposition, derivative, auxiliary verb and clause formation. Elementary learners came last by giving poor performances on the least number of just three linguistic areas: tense, word order and genetives. Across levels, however, three areas (consecutively mechanics, plural/singular form and omission of constituent) appeared to be where errors were most commonly committed. With findings as such, the study is expected to impart theoretical contributions to SLA, especially to studies on error analysis. The findings hopefully can also inspire teachers to teach students of these three proficiency levels in ways that meet their needs more. Keywords: purposive samples, linguistic classifications, negative interlingual tranfer, intralingual transfer, SLA.
The effectiveness of Washback for Learning Activities for Vocational Studies: A study of Language Assessment in an Indonesian Polytechnic
Authors: Fadillah Nurul 
Published: November 2021

Regarding the importance of English for international communication, Indonesian government set up the regulation and included English in the curriculum for schools. English accordingly should be taught from junior high school to university level. Some primary schools in Indonesia even put English as their optional subject beginning in the third year. The regulation may lead to the improvement of human resources especially in education sector because the government believes that will develop national prosperity. In addition, it is also important to improve educational subjects (person who take part in education) for instance teacher, students, academics, etc to maintain the quality in educational sector. The research discusses the effectiveness of using washback to introduce the use of test influences on language teachers and learners activities in the classroom and also examine the concept of washback and language assessment as the instances of the consequential aspect of validity, authentic and direct assessment and difficulty in the test. Keywords: washback, assessment, effectiveness, validity, education, test
Students’ Self Revision in Essay Writing
Authors: Febryanto Mohammad 
Published: November 2021

This study investigates self-revision in essay writing conducted by 6 students. The analysis is based ondetermining common revised errors. The data have been reduced based on Language Related Episodes (LREs). The result shows that there are revision consisting of 1 change in punctuation both in first and second essay, 5 changes spelling in first essay, 19 changes vocabulary in the first essay and 6 changes in second essay, 25 changes in word form correction in the first essay and 27 changes in the second essay, and there are 19 changes in sentence level the first essay and 13 changes in the second one. This indicates that the self-revision is predominantly focused onthe word level changes particularly in morphology. Keywords: self-revision, common revised errors, Language Related Episodes (LREs)
Possessive Relational Process Clauses in Scientific Text: Implication on ESP Teaching
Authors: Khorina Mulyati 
Published: November 2021

This paper focuses of this paper aimsis possessive relational process clauses which is a type of relational process clauses in which relational processes work. Threepoints concerning possessive relational process clauses are discussed in this paper. First, the relational process type which is dominant possessed by possessive relational process clauses. Second, the lexical verbs which realize the dominant type of relational process. The last, the roles played by possessive relational process clauses. The data for this study were taken from Electrical Circuit Theory and Technology, Fundamentals of Electronics Circuits, Electronics Devices, Flow Version, and A Textbook of Electrical Technology, all of which are used as references by Electronics Engineering students of PoliteknikNegeri Bandung. To analyse the data, Systemic Functional Linguistics (SFL) was employed. The results showed that possessive relational process clauses in scientific texts operate solely on attributive relational process. The attributive relational process is realized by lexical verbs have, consist, include, make which represent the possessive relational process clauses as Classification, Composition and Feature.