bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis Of L-Menthyl Acetic by Esterification L-Menthol and Acetic Anhydride with Variation Of Time
Authors: Suryani Novia , Fasya A Ghanaim , Retnowati Rurini , Jannah Akyunul
Published: July 2020

l-menthyl acetic is an ester with specific aroma that synthesized by reaction of l-menthol and acetic anhydride and useful in fragrance industry. This paper reports influenced variation of time reaction toward ester product and characteristics l- menthyl acetic based on TLC, FTIR, GC and GC-MS. Reaction using l-menthol, acetic anhydride and catalyst H­2­SO­4­ 98 % in diethyl eter solvent at temperature 60 °C with variation of time reaction (45, 60, 75, 90, 105 minutes). The result of research is variation of time influence product with highest yield 88,43 % for 90 minutes. Monitoring TLC achived R­f­ = 0,82; analysis by FTIR achived specific wave number ester 1736,96 cm-1; analysis by GC achived t­r­ = 14,82 minutes and analysis by GC-MS achived t­r­ = 16,13 minutes with base peak m/z = 95.
IMPLEMENTASI PENDIDIKAN ANTI KORUPSI PADA PROGRAM STUDI PGMI IAIN KENDARI
Authors: Ilham Muhammad , Hardiyanti Waode Eti
Published: July 2020

AbstrakPenelitian ini bertujuan untuk mengkaji implementasi model pendidikan anti korupsi pada program studi PGMI IAIN Kendari, mengetahui dampak dari implementasi model pendidikan anti korupsi tersebut, dan mengetahui model kurikulum pendidikan anti korupsi mana yang lebih memahamkan mahasiswa. Penelitian ini merupakan penelitian deskriptif kualitatif dengan subjek penelitian adalah 75 mahasiswa program studi PGMI IAIN Kendari semester IV. Teknik pengumpulan data menggunakan kuesioner dan wawancara mendalam kemudian dianalisis dengan reduksi data, penyajian data, dan verifikasi data. Hasil penelitian menunjukkan bahwa implementasi model kurikulum pendidikan anti korupsi tidak 100% murni menerapkan model mata kuliah sendiri, tetapi mengintegrasikan pembelajaran tidak langsung, seperti pembiasaan dan pemberian nasihat. Implementasi model pendidikan anti korupsi tersebut sudah cukup memberikan pemahaman kepada mahasiswa mengenai kajian korupsi. Model kurikulum dengan mata kuliah sendiri masih merupakan model yang paling memberi pengetahuan bagi mahasiswa terhadap materi anti korupsi, namun dengan penambahan program pembelajaran di luar kelas. Abstract This study aimed to analyze the model of anti-corruption education implemented in PGMI (Islamic elementary school teacher) department at IAIN Kendari, to know the impact of the implementation of anti-corruption education model, and to find the most effective curriculum model of anti-corruption education. This research used qualitative descriptive method and the research subject was the 4th semester students of PGMI department at IAIN Kendari. The data collecting used were questionnaire and depth interview. The data were analyzed by data reduction, data presentation, and data verification. The findings indicated that anti-corruption education as regular subject in department of PGMI IAN Kendari was not the only method applied,but it integrated into indirect teaching such as getting them wonted and giving them advice. The implementation of anti-corruption education model made the students understand about corruption studies. Anti-corruption education as regular subject was the effective model to help the students understand the corruption, although an additional teaching method should be considered.
STUDENTS’ PERCEPTION ON THE USE OF HUMOR IN ENGLISH TEACHING PROCESS
Authors: Muthi'ah Muthi'ah , Galib Syamsul Arif
Published: July 2020

This study examines the use of humor in the teaching process of the English Education Department as perceived by the students. Three main points are discussed in this study: (1) the kinds of lecturers that the students mostly expect to keep them engaged with English tasks in classroom environment, (2) the students’ perception on the use of humor as learning motivator, and (3) the students’ perception on the Lecturers’ Teaching Characters. The participants of the research were the students of the English Education Department at UIN Alauddin Makassar. This research is descriptive. The data were collected using a survey and depth interviews with the students. The results show that the most preferable lecturers are the ones who can make the class/course interesting. Also, while 96% of the students think that using humor in the classroom is important as a learning motivator, the researchers found that lecturers in the English Education Department rarely use humor in the teaching process.
UTILIZING VIDEOCAST: FOSTERING STUDENTS’ LISTENING COMPREHENSION
Authors: Nawir Muhammad Syahruddin
Published: July 2020

Listening has an important role in communication which is applied in foreign language classroom and it is considered as necessary skill because it has an essential role in facilitating learners to master English proficiency. The aims of this research were to find out the extent to which videocast improves listening comprehension of the fourth semester students of Makassar Islamic University and the students’ perceptions toward the utilization of videocast in teaching and learning activities. This research was carried out in the fourth semester students of English Department of Makassar Islamic University. The method used was quasi-experimental design with pre-test, eight meetings of treatment, and post-test. The data were collected using two kinds of research instruments: listening test and questionnaire. The data were then analyzed by means of statistical analysis through the independent sample t-test and the frequency of questionnaire. The result showed that the independent t-test which compared the students’ score on post-test revealed a value of p<0.05. It means there is a significant difference between listening comprehension of the students who were taught by utilizing videocast and the students who were not taught by utilizing videocast. Furthermore, the analysis of questionnaire indicated that the students’ perceptions toward the utilization of videocast were very positive. It can be concluded that utilizing videocast improves significantly students’ listening comprehension.
ASTROLABE; INSTRUMEN ASTRONOMI KLASIK DAN KONTRIBUSINYA DALAM HISAB RUKYAT
Authors: Rausi Fathor
Published: July 2020

AbstrakKontribusi Astrolabe sebagai instrumen astronomi klasik tidak boleh dipandang sebelah mata. Peran dan kontribusinya cukup signifikan dalam perkembangan astronomi. Astrolabe secara umum berfungsi untuk menentukan waktu surya (solar time) dengan memanfaatkan fenomena alam, yaitu Matahari pada siang hari dan pengamatan bintang pada malam hari. Kehadiran Astrolabe dengan fungsinya tersebut sangat membantu aktivitas manusia sehari-hari dalam beberapa lini. Astrolabe mengalami modifikasi di tangan umat Islam, karena fungsi instrumen klasik ini selaras dengan syariat Islam, khususnya dalam penentuan awal waktu salat. Masuknya waktu salat dalam hukum Islam didasarkan kepada fenomena alam, seperti tergelincirnya Matahari (zawāl) sebagai tanda masuknya waktu salat zuhur. Kata Kunci: Astrolabe, instrumen astronomi klasik dan hisab rukyat.
Menelaah Perkembangan Kajian Hisab Rukyah di Indonesia
Authors: Zulhadi Heri
Published: July 2020

Abstract Hisab and rukyah are two methods of study used by Muslims to determine the start time of prayer, fasting, hajj and so forth. Periodesasi hisab rukyah, at a glance must have imagined what is meant by hisab rukyah. In the discourse about the Hijri calendar known by the term hisab and rukyah. Hisab is a calendar calculation system based on the average circulation of the moon that surrounds the earth and is conventionally defined. This reckoning system began since the establishment of Caliph Umar ibn Khattab ra (17H) as a reference for composing an enduring Islamic calendar. Another opinion says that this calendar system started in 16 H or 18 H, but the more popular is the year 17 H. While Rukyah is seeing the hilal directly with the naked eye or with the help of tools such as telescopes or other tools that support to see the new moon every end of Qamariyah month. The word rukyah is more famous as rukyatul hilalyaitu see moon. In this study, the author will describe a little about the history of hisab and rukyah in the period of prophets, companions, tabi'in, mid to modern period today. In this study, the scope of hisab rukya includes prayer times, Qibla direction, the beginning of Qamariyah month, eclipse and hijri calendar. Keyword: Hisab, Rukyah.
POSISI MATAHARI DALAM MENENTUKAN WAKTU SHALAT MENURUT DALIL SYAR’I
Authors: ZAINUDDIN ZAINUDDIN
Published: July 2020

ABSTRAKSecara astronomis, yang menjadi patokan untuk menentukan awal dan akhirnya waktu salat adalah letak posisi matahari dalam perjalanan semu di sekitaran Ekliptika. Awal waktu salat Zuhur yaitu pada saat posisi matahari berada di titik 0o derajat atau berada tepat di garis meridian langit. Masuknya awal waktu Asar dimulai saat posisi matahari berada di titik 51o derajat, terhitung dari garis meridian langit. Masuknya awal waktu Magrib dimulai pada saat posisi matahari -01o derajat dibawah ufuk bagian barat atau 91o derajat dari garis meridian. Sedangkan, masuknya awal waktu salat Isya dimulai pada saat posisi matahari -18o derajat di bawah ufuk barat atau 108o derajat dari garis meridian. Dan awal waktu Subuh dimulai pada saat posisi matahari berada di titik -20o derajat di bawah ufuk timur atau 110o derajat dari garis meridian. Dalam Hukum Islam masuknya waktu salat  ditandai dengan hal-hal sebagai berikut, salat Zuhur dimulai saat matahari tergelincir hingga bayangan suatu benda sama panjangnya dengan benda tersebut. Waktu salat Asar dimulai saat berakhirnya waktu Zuhur yakni, bayangan suatu benda melebihi bendanya sedikit sampai sempurna terbenamnya piringan Matahari. Waktu salat Magrib dimulai saat terbenamnya Matahari sampai hilang mega merah. Waktu salat Isya dimulai saat telah hilang mega merah sampai terbit fajar kedua, yakni fajar shadiq. Waktu salat Subuh dimulai ketika tampak fajar kedua, sampai terbit bagian atas piringan Matahari.Keyword : Matahari, Waktu salat dan dalil syar’i
Gender dan Legitimasi Penentuan Awal Bulan Kamariah
Authors: Machzumy Machzumy , Syarif Muh Rasywan
Published: July 2020

Rukyatul hilal activity is an annual agenda of the Ministry of Religion of the Republic of Indonesia to determine the entry of the early lunation month. As for the focus of the hilal rukyatul activity is the emergence of the new moon itself. So far, the determination of the beginning of the month is only done by male seaman, whereas women celestial experts also have the same opportunities and rights. But so far, the authors have not found any reports of hilal rukyat from women. This research uses library research method with a qualitative approach. The results of this study indicate that in the initial determination of the lunar month, female astronomers do not yet have the same rights and position as men.Keyword: Determination of Kamariah, Gender
OPTIMALISASI KEANDALAN SISTEM PROTEKSI FEEDER DENGAN RELAY PENUTUP BALIK (AUTO RECLOSER) PADA GARDU INDUK TELLO
Authors: AMIRUDDIN AMIRUDDIN , HASYIM MUHAMMAD
Published: July 2020

Seiring sejalan dengan pertumbuhan ekonomi dan jumlah penduduk, kebutuhan energi listrik semakin besar pula. Apalagi dengan pesatnya pertumbuhan  industri dan semakin beragamnya peralatan konsumen yang menggunakan tenaga listrik. Semakin berkembang sistem tenaga listrik dapat mengakibatkan lemahnya performansi system peralatan tenaga listrik ketika mengalami gangguan. Objek penelitian ini adalah bekerjanya relay penutup balik (auto recloser) tiga fasa diakibatkan oleh gangguan pada gardu induk di PLN Sektor Tello dalam jangka periode Juni 2018 – Mei 2019. Adapuncara atau  teknik analisis data yang digunakan dalam penelitian ini ialah teknik analisis deskriptif, yaitu mendeskripsikan data dengan memanfaatkan table jumlah gangguan dan lama waktu gangguan guna memutuskan keandalan sistem proteksi feeder relay penutup balik (auto recloser). Total daya yang tidak tersalur diakibatkan oleh gangguan pada feeder yang tidak memakai auto recloser yaitu 58 kali gangguan dengan jumlah waktu pemutusan atau pemadaman 0,94 jam. rata-rata beban feeder yang tidak menggunkan auto recloser adalah 63 Ampere, sedangkan jumlah daya yang tidak tersalur karena akibat gangguan pada feeder yang menggunakan auto recloser yaitu 146 kali gangguan dengan jumlah waktu pemadaman 2,45 jam Kata Kunci: Analisis. relay penutup balik. Kehandalan
SISTEM PAKAR PENDETEKSI PENYAKIT PADA BALITA MENGGUNAKAN METODE COSINE SIMILARITY DAN ALGORTIMA NAZIEF ADRIANI
Authors: RIDWANG RIDWANG , AFIF NUR , SYAHYADI ASEP INDRA
Published: July 2020

Kesehatan merupakan prioritas utama bagi umat manusia. Sebagian dari para orang tua banyak yang salah dalam menyikapi gejala – gejala penyakit yang timbul pada balita dan sering melakukan pengobatan sendiri tanpa adanya bimbingan dari dokter atau pakar sehingga bisa berakibat fatal pada pertolongan pertama kepada balita. Penelitian ini bertujuan untuk memberikan petunjuk kepada orang tua dalam melakukan pertolongan pertama pada balita. Aplikasi di rancang dengan menggunakan metode Cosine Similarity dan Algoritma Nazief & Adriani untuk melakukan klasifikasi text sehingga didapatkan jenis penyakit dan cara pencegahannya berdasarkan gejala – gejala yang di masukkan oleh orang tua atau keluarga pasien dalam bentuk kalimat.Kata Kunci : Sistem Pakar, penyakit balita, Cosine Similarity, Nazief & Adriani
IMPLEMENTASI ALGORITMA A* PADA GAME EDUKASI PUZZLE TENTANG JENIS PERAHU TRADISIONAL BERBASIS ANDROID
Authors: JUMARLIS MILA
Published: July 2020

Puzzle merupakan permainan mengatur gambar, dimana gambar yang terhambur, dicoba disusun dan dihubungkan kembali menjadi sebuah gambar/view yang utuh dan bermakna. Penelitian ini bertujuan untuk memberikan pengetahuan tentang perahu-perahuyang ada di Sulawesi Selatan agar dapat mwemberikan wawasan kepada masyarakat. Algoritma yang digunakan dalam menyelesaiakan permasalahan tersebut adalah A Star. Untuk desain penelitian yang digunakan adalah UML(Unifeid Modeling Language) yang terdiri dari Ussecase Diagram, Activitya diagram, Sequence Diaghram, Java dan Adobe Flash Professiona adalah Bahasa Pemrograman yang digunakan pada sistem ini. Hasil penelitian menunjukan bahwa game edukasi ini memberikan manfaat dan kemudahan dalam belajar mengenal jenis-jenis perahu yang ada di sulawesi selatan, maka pembelajaran tentang perahu di Sulawesi Selatan jadi lebih efektif dan lebih objektif dan dengan menggunakan metode A Star akan mengacak objek dan kuis yang ada pada dame puzzle  tersebut sehingga lebih menarik bermain puzzle. Kata Kunci: A Star, Edukasi, Puzzle,Perahu
PEMANFAATAN KODE QR PADA PENINGKATAN PELAYANAN DAN KEPUASAN PELANGGAN PADA RESTORAN
Authors: FAISAL FAISAL , FAUZAN ANAS MUHAMMAD AZMI
Published: July 2020

Kode QR merupakan sebuah system yang menggunkan kode gambar dua deimensi yang juga berasal dari evolusi Barcode. Penggunaan kode QR sudah sangat lazim di berbagai negara. Hal ini dikarenakan kemampuannya menyimpan data yang lebih besat daripada barcode sehingga mampu mengkodekan informasi dalam berbagai macam Bahasa. Kode QR menggunakan suatu jenis kode matriks atau kode dalam bentuk dua dimensi yang dikembangkan oleh Denso Wave.            Dalam penelitian ini, jenis penelitian yang digunakan adalah penelitian deskriptif kualitatif adapun metode kualitatif. Adapun metode perancangannya menggunakan unified modelling languange (UML). Analisis yang dilakukan mencakup analisis sistem yang berjalan dan analisis sistem yang diusulkan,            Hasil penelitian ini berupa aplikasi berbasis android yang dapat memudahkan system pemesanan dan pelayanan pada restoran dengan menggunkan bantuan teknologi kode QR. Kata Kunci : QR code, Android, Reservasi
STUDI EVALUATIF SISTEM PEMBELAJARAN BAHASA ARAB DI MA PUTRA PONDOK MODERN DARUSSALAM LIABUKU KOTA BAU BAU
Authors: Talim Ahmad
Published: July 2020

The focus of this research is the Arabic learning system in MA Putra Bau Bau Darussalam Islamic Boarding School in Bau Bau City. From these problems, this study aims to evaluate the Arabic learning system in Darussalam Islamic Boarding School which is focused on the main issues, namely: 1) How is the compatibility of the Antasedent Arabic learning system entry in Darussalam Liabuku Bau Bau Islamic boarding school with the process standard?This type of research is a program evaluation with a descriptive qualitative approach, in this study the authors assess the quality level and conditions of the Arabic language learning system in Darussalam Islamic Boarding School Liabuku Bau Bau. To obtain the data, three data collection techniques were used, namely observation, interviews and documentation. After data collection, the data processing is then processed through three stages, namely: 1) data reduction, 2) data display, 3) and drawing conclusions / verification.The results of this study indicate that learning Arabic in MA Putra Darussalam Liabuku Islamic boarding school is fulfilled with 3 standard processes, namely: achieving the existing Arabic learning objectives, teachers in MA Kulliyatul Muallimin al-Islamiyah Darussalam Liabuku Islamic boarding school Bau Bau make I 'dad al-Tadrīs to support the existing Arabic teaching and learning activities, because all of his learning uses Arabic as the medium. In evaluating students 'theoretical or practical language skills, the teacher evaluates learning in the form of oral examinations (imtihᾶn syafahi) and written examinations (imtihᾶn tahrīrī), so that the assessment of students' Arabic Arabic abilities cannot be separated in the four language skills.From this research, a strategic recommendation can be adopted in improving the learning system of KMI Pondok Modern Darussalam Liabuku, namely teachers working with Language Builders in language programs to improve the ability of the Santri Arabic language and provide a Language Laboratory to improve students' listening skills.
AL-JAMI CAMPUS INSTITUTIONAL STRATEGY IN FORMING THE UNDERSTANDING OF RELIGION IN STUDENTS
Authors: Ramadhan Syahru
Published: July 2020

This paper discusses the al-Jami Campus Da'wah Institute strategy in shaping religious understanding among students, al-Jami Campus Da'wah Institute is the first intra-campus institution in the UIN Alauddin Makassar environment, as the central preaching in the campus environment until now, as for the objectives the establishment of this institution as a means to instill understanding of Islam in the form of the values of faith, worship and morals among students, over time the Campus Preaching Institutions that exist on campus have emerged, so that the existence of LDK al-Jami sometimes does not have an existence as a missionary institution on campus in preaching because of the many preaching institutions that have sprung up, both in the name of intra and extra-campus institutions, the preaching strategy undertaken by the campus missionary institution by using several patterns so that it can attract students to join and conduct ongoing coaching through mentors ing, general studies, and special studies. This paper tries to examine the pattern of coaching conducted by LDK al-Jami in preaching in the UIN Alauddin Makassar environment.
THE ROLE OF SCHOOL PRINCIPAL LEADERSHIP ON QUR'ANIC GENERATION DEVELOPMENT PROGRAM (QGDP) IN ISLAMIC PRIMARY SCHOOL ATHIRAH 1 KAJAOLALIDO MAKASSAR
Authors: Harisman Harisman
Published: July 2020

The main problem of this research is how the Principal's role in the implementation of the Qur'anic Generation Development Program (Tahsin, Tahfidz, and Tadabbur) in Athirah I Islamic Elementary School Makassar. This research uses qualitative research. The data sources of this research are the Principal, Coordinator of the Koran, and students' participation. Furthermore, the data collection methods used are, observation, and reference tracking. Then, data processing and analysis techniques are carried out through three stages, namely: data reduction, data presentation, and concluding. The results of this study indicate that there are seven steps in the implementation of tahsin, tahfidz, and tadabbur in learning to read the Koran at SD Athirah 1 Makassar, namely: Opening, Apperception, Concept Planting, Concept Understanding, Exercise/Skills, Evaluation, Closing, both in terms of Individual, classical individual, and classical reading.
THE METHODS OF GIRLS ASY’ADIYAH ISLAMIC SENIOR HIGH SCHOOL IN WAJO TO OVERCOME LEARNING DIFFICULTIES AMONG THE FLUNKED STUDENTS
Authors: Hasmah Hasmah
Published: July 2020

This article mainly concerned about factors that cause students to stay in class have difficulty learning in the subjects of Islamic Cultural History there are two factors, namely internal factors, and external factors. Slow learner students experience learning difficulties in Islamic Cultural History subjects due to internal factors in the form of health that is often disrupted, prenatal disorders, and low intelligence, also caused by external factors from the family environment. The learning difficulties of underachiever students in Islamic Cultural History subjects are influenced by internal factors in the form of no interest in learning in Islamic Cultural History subjects, causing students to lack attention, motivation, and lack of readiness in following the learning process.
THE IMPLEMENTATION OF CHARACTER EDUCATION IN ISLAMIC BOARDING SCHOOL
Authors: Hidayat Nur , Bujuri Dian Andesta
Published: July 2020

Abstract:The aim of this research was to find out the implementation of character education in Islamic boarding school (Ponpes) of Ibnul Qoyyim in Yogyakarta and Al-Hidayah in Jambi. The method used of this research was qualitative method with case study approach. The data were obtained through interview, observation, and documentation. The research subjects were selected using purposive sampling. Data analysis technique used referred to Miles and Huberman model, namely reducing data, displaying data, and concluding. The findings indicated that there were similar methods applied to teach character education in both Ponpes. Both of them integrated vision, mission, and all activities program into character education values through co-curricular, intracurricular, extracurricular, and habituation. Islamic students (Santri) practiced the values such as religious, politeness, discipline, honest, hard work, independent, responsible, mutual help, tolerant, caring the social environment in daily activities. The minimum control was able to give opportunity for Santri to avoid negative behavior. The character education which was programmed and integrated to all activities in those Ponpes was quite effective to build Islamic students’ character which needed intensive collaboration between parents and society to educate and to control Santri when they were outside Ponpes area.Abstrak:Tujuan penelitian ini adalah untuk mempelajari pelaksanaan pendidikan karakter di pesantren Ibnul Qoyyim di Yogyakarta dan Al-Hidayah di Jambi. Metode yang digunakan dalam penelitian ini adalah metode kualitatif dengan menggunakan studi kasus. Data diperoleh melalui wawancara, observasi, dan dokumentasi. Subjek penelitian dipilih menggunakan purposive sampling. Teknik analisis data yang digunakan mengacu pada model Miles dan Huberman, yaitu mereduksi data, menampilkan data, dan menyimpulkan. Hasil penelitian menunjukkan adanya kesamaan metode yang digunakan kedua Ponpes tersebut. Keduanya mengintegrasikan visi, misi, dan program kegiatan ke dalam nilai-nilai pendidikan karakter melalui ko-kurikuler, intrakurikuler, ekstrakurikuler, dan habituasi. Santri mempraktikkan nilai-nilai seperti agama, kesopanan, disiplin, jujur, kerja keras, mandiri, bertanggung jawab, saling membantu, toleran, peduli terhadap lingkungan sosial dalam kehidupan sehari-hari. Kontrol minimum mampu memberi kesempatan bagi Santri untuk menghindari perilaku negatif. Pendidikan karakter yang diprogramkan dan terintegrasi ke semua kegiatan di Ponpes cukup efektif untuk membangun karakter Santri yang membutuhkan kolaborasi intensif antara orang tua dan masyarakat untuk mendidik dan mengontrol Santri ketika mereka berada di luar wilayah Ponpes.
THE CORRELATION OF THE LECTURERS’ TEACHING METHODS AND COMPETENCIES TO THE STUDENTS’ LEARNING ACHIEVEMENT
Authors: Mindani Mindani , Trinova Zulvia , Lindra Afni , Alimir Alimir
Published: July 2020

Abstract: The lecturers' teaching methods and competencies vary at IAIN Bukittinggi so that it is important to know the correlation of the lecturers’ teaching methods and competencies to the students’ learning achievement at IAIN Bukittinggi. The method used of this research was quantitative method with ex post facto design. This research involved all lecturers and students of IAIN Bukittinggi as population and the sample was consisted of 40 people. The instrument used to collect the data was closed-questionnaire. The data were processed by scoring and inferential analyzing. The finding indicated that most of the lecturers at IAIN Bukittinggi applied lecture, question-answer, discussion, assignment, and problem solving methods. It was also found that the correlation of the lecturers’ teaching methods and competencies to the students’ achievement was only 2.8%. Therefore, there was low correlation of the lecturers’ teaching methods and competencies to the students’ achievement in IAIN Bukittinggi.Abstrak: Metode dan kompetensi mengajar dosen bervariasi di IAIN Bukittinggi sehingga penting untuk mengetahui hubungan antara metode pengajaran dan kompetensi dosen dengan prestasi belajar mahasiswa di IAIN Bukittinggi. Metode yang digunakan dalam penelitian ini adalah metode kuantitatif dengan desain ex post facto. Penelitian ini melibatkan semua dosen dan mahasiswa IAIN Bukittinggi sebagai populasi dan sampel terdiri dari 40 orang. Instrumen yang digunakan untuk mengumpulkan data adalah kuesioner tertutup. Data diproses dengan penilaian dan analisis inferensial. Temuan menunjukkan bahwa sebagian besar dosen di IAIN Bukittinggi menerapkan metode ceramah, tanya jawab, diskusi, penugasan, dan pemecahan masalah. Ditemukan juga bahwa korelasi antara metode pengajaran dan kompetensi dosen dengan prestasi belajar siswa hanya 2,8%. Oleh karena itu, ada korelasi yang rendah antara metode pengajaran dan kompetensi dosen dengan prestasi siswa di IAIN Bukittinggi.
The Effect of E-WOM, Ease of Use and Trust on Purchase Decisions (Study on Tokopedia Application Users)
Authors: Badir Mailal , Andjarwati Anik Lestari
Published: July 2020

The purpose of this study is to determine the effect of e-WOM, convenience, and trust in purchasing decisions. The development of internet-based trading systems or e-commerce changes the patterns of consumer behavior from conventional shopping to shopping digitally or online. The sample in this study was 200 respondents of Tokopedia users. The analyis uses multiple regression analysis. The results showed there was no significant effect of the e-WOM variable on purchasing decisions, and there was a substantial influence on the easiness and trust variables on buying decisions.
Kontribusi Partai Politik di Tengah Pandemi Covid-19 di Kabupaten Gowa
Authors: Ramlah Ramlah
Published: July 2020

Tulisan ini mencoba mencari fakta dan pendapat masyarakat tentang peran partai politik di Kecamatan Tompobulu Kabupaten Gowa di tengah pandemi Covid-19. Secara garis besar, tulisan ini bertujuan untuk memahami dan mengetahui peran partai politik dalam membantu penanganan Covid-19 dan untuk mengetahui bagaimana pandangan masyarakat tentang peran partai dalam membantu penanggulangan Covid-19. Penelitian ini menggunakan metode penelitian kualitatif deskriptif untuk menggambarkan sejauhmana partai politik berkontribusi dalam penanganan pandemi Covid-19 di Tompobulu. Kesimpulan tulisan ini adalah bahwa beberapa partai politik berkontribusi dengan cara membagi Alat Pelindung Diri (APD) ke Puskesma Tompobulu, namun demikian masyarakat menginginkan kontribusi yang lebih.
On the Borel Classes of Set-Valued Maps of Two Variables
Authors: Holá Ľubica , Kwiecińska Grażyna
Published: July 2020

Using the Borel classification of set-valued maps, we present here some new results on set-valued maps which are similar to some of the well known theorems on functions due to Lebesgue and Kuratowski. We consider set-valued maps of two variables in perfectly normal topological spaces. It was proved in [11] that a set-valued map lower semicontinuous (i.e. of lower Borel class 0) in the first and upper semicontinuous (i.e. of upper Borel class 0) in the second variable is of upper Borel class 1 and also (with stronger assumptions) of lower Borel class 1. This result cannot be generalized into higher Borel classes. In this paper we show that a set-valued map of the upper (resp. lower) Borel class α in the first and lower semicontinuous and upper quasicontinuous (upper semicontinuous and lower quasicontinuous) in the second variable is of the lower (resp. upper) Borel class α + 1. Also other cases are considered.
Establishing Standard Protocols for Bacterial Culture in Biological Research in Canisters (BRIC) Hardware
Authors: Fajardo-Cavazos Patricia , Nicholson Wayne L.
Published: July 2020

The NASA GeneLab Data System (GLDS) was recently developed to facilitate cross-experiment comparisons in order to understand the response of microorganisms to the human spaceflight environment. However, prior spaceflight experiments have been conducted using a wide variety of different hardware, media, culture conditions, and procedures. Such confounding factors could potentially mask true differences in gene expression between spaceflight and ground control samples. In an attempt to mitigate such confounding factors, we describe here the development of a standardized set of hardware, media, and protocols for liquid cultivation of microbes in Biological Research in Canisters (BRIC) spaceflight hardware, using the model bacteria Bacillus subtilis strain 168 and Staphylococcus aureus strain UAMS-1 as examples.
Lower Leg Anatomical Correlates to Performance and Metabolism from Flywheel-based Exercise
Authors: Perry Rachel A. , Martin Jake L. , Vickers Samantha D. , Cesarz Greta M. , Bai Ling , Selimovic Ema A. , Muntis Frank , Parmar Prashant J. , Caruso John F.
Published: July 2020

Lower leg exercises are impacted by the anatomy of the triceps surae-Achilles tendon complex. Such exercises may utilize series elastic energy (SEE), temporarily stored within the Achilles tendon, to augment forces exerted by the triceps surae. While SEE's contribution to bipedal jumping and walking have been assessed, other lower leg exercises yet to receive similar scrutiny include seated calf presses done on flywheel-based hardware. Current subjects did two identical calf press workouts on a flywheel ergometer. The following three variables were obtained from workouts–the total work (TW) performed, net energy costs, and peak blood lactate concentration ([BLa−]). With multivariate regression, four variables correlated with each criterion measures’ variance–lower leg length (LLL) and cross-sectional area (CSA), as well as the lengths of the triceps surae (ML) and Achilles tendon (ATL). Our predictor variables correlated to significant amounts of TW and net energy cost, but not [BLa−] variance. Univariate matrices showed CSA was the best overall predictor for our criterion measures, while ML and ATL were generally weaker correlates. ATL did not have as great an impact as with other lower leg exercises; likely because the slow rate of ankle joint movement greatly limited SEE activity. The limited degree of foot support for ergometer repetitions was also a factor that likely weakened ATL's impact as a correlate. More research on anatomy's impact on this novel form of exercise is warranted.
Chronic Exposure to Altered Gravity During the Pregnancy-to-Lactation Transition Affects Abundance of Cytoskeletal Proteins in the Rat Mammary Gland
Authors: Alula Kibrom M. , Resau James H. , Patel Osman V.
Published: July 2020

The mammogenic, lactogenic, and lactopoetic effects of prolactin (PRL) in the mammary gland are mediated through a specific cytokine receptor, the PRL-receptor (PRLR). PRLR is anchored to the cytoskeleton and its activation, and subsequent signal transduction, is dependent on an integral/intact cytoskeletal organization. Previous studies revealed a down-regulation of PRLR and reduced metabolic output in the mammary gland of rats exposed to hypergravity (HG). Therefore, the objective of this study was to use quantitative immunohistochemistry to determine the effects of HG exposure during pregnancy on the pre- and postpartum abundance of the cytoskeletal proteins in the rat mammary gland. Pregnant rats were exposed to either 2xg [HG] or 1xg [Stationary control (SC)] from days 11 to 20 of gestation (G20) through postpartum days 1 (P1) and 3 (P3). Spectral characterization and quantitation of each antigen (actin, tubulin, cytokeratin, and vimentin) per lobule (n=3–7 lobules/micrograph; 4 micrographs/slide) was computed using the CRi Nuance multispectral system. At G20 and P3, increased (p<0.001) amounts of actin, tubulin, cytokeratin, and vimentin were detected in HG rats. Tubulin, cytokeratin, and vimentin were overexpressed (p<0.01) in HG group compared to SC at P1. These results suggest that atypical composition of cytoskeletal proteins contribute to the aberrant lactogenic signal transduction and associated reduced postpartum mammary metabolic output in rats exposed to altered inertial environment.
Approaches for Surveying Cosmic Radiation Damage in Large Populations of Arabidopsis thaliana Seeds – Antarctic Balloons and Particle Beams
Authors: Califar Brandon , Tucker Rachel , Cromie Juliana , Sng Natasha , Austin Schmitz R. , Callaham Jordan A. , Barbazuk Bradley , Paul Anna-Lisa , Ferl Robert J.
Published: July 2020

The Cosmic Ray Exposure Sequencing Science (CRESS) payload system was a proof of concept experiment to assess the genomic impact of space radiation on seeds. CRESS was designed as a secondary payload for the December 2016 high-altitude, long-duration south polar balloon flight carrying the Boron and Carbon Cosmic Rays in the Upper Stratosphere (BACCUS) experiment. Investigation of the biological effects of Galactic Cosmic Radiation (GCR), particularly those of ions with High-Z and Energy (HZE), was of interest due to the genomic damage this type of radiation inflicts. The biological effects of radiation above Antarctica (ANT) were studied using Arabidopsis thaliana seeds and compared to a simulation of GCR at Brookhaven National Laboratory (BNL) and to laboratory control seeds. The CRESS payload was broadly designed to 1U CubeSat specifications (10 cm × 10 cm × 10 cm, ≤1.33 kg), maintained 1 atm internal pressure, and carried an internal cargo of 580,000 seeds and twelve CR-39 Solid-State Nuclear Track Detectors (SSNTDs). Exposed BNL and ANT M0 seeds showed significantly reduced germination rates and elevated somatic mutation rates when compared to non-irradiated controls, with the BNL mutation rate also being higher than that of ANT. Genomic DNA from plants presenting distinct aberrant phenotypes was evaluated with whole-genome sequencing using PacBio SMRT technology, which revealed an array of structural genome variants in the M0 and M1 plants. This study was the first whole-genome characterization of space-irradiated seeds and demonstrated both the efficiency and efficacy of Antarctic long-duration balloons for the study of space radiation effects on eukaryote genomes.
Does Oxygen Uptake Before Physical Exercise Affect Tear Osmolarity?
Authors: Wylęgała Adam , Pilch Jan , Bolek Bartłomiej , Sędziak-Marcinek Bogumiła , Wylęgała Edward
Published: July 2020

Recently, it has been reported that tear osmolarity (Tosm) is correlated with plasma osmolarity and will increase during exertion. We aimed to assess whether inhaling oxygen-enriched air between exercises could significantly change the Tosm value. Thirty men aged 24.9 years were included in the study. A cycloergometer was used to perform the exercise protocol. We recorded the participants’ Tosm (mOsm/L), heart rate (HR, beats/minute), oxygen saturation, and blood pressure values. After the first exhaustive exercise (T1), participants inhaled oxygen in the experimental group and a placebo in the control group. After the second exercise (T2), another set of measurements was obtained. The Tosm value before exercise was 297.4 ± 1.21 and 296.53 ± 1.11 mOsm/L (p = 0.61718) and the HR was 72.6 ± 2.59 and 73 ± 2.59 beats/minute (p = 0.39949) in the study and the control group, respectively. At T1, Tosm was 303.67 ± 1.25 and 302.2 ± 1.25 mOsm/L (p = 0.41286) and the HR reached 178.04 ± 2.60 and 176.4 ± 2.60 beats/minute (p = 0.65832), respectively. At T2, Tosm in the study group reached 305.73 ± 0.86 mOsm/L (correlation with the use of oxygen: r = −0.3818), and in the control group, it was 308.4 ± 0.86 mOsm/L (p = 0.0373), while the HR reached 172.20 ± 2.53 beats/minute in the study group and 178.2 ± 2.53 beats/minute in the control group (p = 0.057). It was concluded that inhaling oxygen before and after exercise could increase the rate of recovery after exhaustive exercise.
A Finite Element Model for Estimation of Contact Dynamics During a Jumping Movement on a Trampoline
Authors: Qian Jingguang , Mao Yiling , Tang Xiao , Li Zhaoxia , Wen Chen , Zhang Songning
Published: July 2020

In order to fully understand contact dynamics on a trampoline, a simulation approach using a musculoskeletal model coupled with a dynamic model of the trampoline is essential. The purpose of the study was to examine dynamics and selected lower extremity muscle forces in a landing and jumping movement on a trampoline, using a combination of finite element modeling and musculoskeletal modeling. The rigid frame of the trampoline was modeled in ADAMS and coupled with a finite element model of the elastic trampoline net surface in ANSYS. A musculoskeletal model of an elite trampoline athlete was further developed in LifeMod and combined with the finite element model of the trampoline. The results showed that the peak trampoline reaction forces (TRF) were 3400 N (6.6 BW) and 2900 N (5.6 BW) for the left and right limb, respectively. The right hip, knee and ankle joint reaction forces reached the maximum between 3000-4000 N (5.8 – 7.7 BW). The gluteus maximum and quadriceps reached the maximum muscle force of 380 N (0.7 BW) and 780 N (1.5 BW), respectively. Asymmetric loading patterns between left and right TRFs and lower extremities joint reaction forces were observed due to the need to generate the rotational movement during the takeoff. The observed rigid and erect body posture suggested that the hip and knee extensors played important roles in minimizing energy absorption and maximizing energy generation during the trampoline takeoff.
Kinematic Mobile Drop Jump Analysis at Different Heights Based on a Smartphone Inertial Sensor
Authors: Mateos-Angulo Alvaro , Galán-Mercant Alejandro , Cuesta-Vargas Antonio Ignacio
Published: July 2020

The purpose of this study was to describe the acceleration variables in a plyometric jump test using the inertial sensor built into an iPhone 4S® smartphone, and the jumping variables from a contact mat. A cross-sectional study was conducted involving 16 healthy young adults. Linear acceleration, flight time, contact time and jump height were measured in a drop jump test from 60 cm and from 30 cm. Greater acceleration values were found in the drop jump test from 60 cm; the same was observed for the values from the contact mat. Multiple regression analysis was performed for each drop jump test: jump height was used as the dependent variable, and the most relevant variables were used as predictor variables (weight and maximum angular velocity in the Y axis for analysis of the drop jump from 60 cm, and weight and maximum acceleration in the Z axis for the drop jump from 30 cm). We found a significant regression model for the drop jump test from 60 cm (R2 = 0.515, p “ 0.001) and for the test from 30 cm (R2 = 0.460, p “ 0.01). According to the results obtained in this study, the built-in iPhone 4S® inertial sensor is able to measure acceleration for healthy young adults performing a vertical drop jump test. The acceleration kinematic variables are higher in the drop jump test from 60 cm than from 30 cm.
Push-Ups are Able to Predict the Bench Press 1-RM and Constitute an Alternative for Measuring Maximum Upper Body Strength Based on Load-Velocity Relationships
Authors: Tillaar Roland van den , Ball Nick
Published: July 2020

The aims of this study were firstly to compare the similarity in upper-body muscle activation between the bench press and push-up at similar loads, and secondly to establish a 1-RM prediction equation between the two exercises based upon the load-velocity relationship. Twenty resistance-trained male athletes (age 22.5 ± 5.24 years, body mass 83.7 ± 10.7 kg, body height 1.80 ± 0.06 m) performed push-ups and bench presses with four different loads. Push-ups were performed without a weight vest and with a 10-20-30 kg weight vest. Bench presses were performed at 50-80% of athletes’ assumed 1 repetition max (1-RM) in 10 kg steps, while a linear encoder measured performance during the exercises. A load-velocity relationship was established as a product of the load and velocity for the push-up and bench press per participant and the equation was used to establish a predicted 1-RM. Mean muscle activation of eight upper body muscles was recorded for each exercise and each load. The main findings of this study demonstrate an extremely large association between the predicted 1-RM loads performed with the push-up and bench press (r = 0.93) in experienced resistance trained men. Furthermore, most muscles showed similar activations between the two exercises with the different loads except the deltoid and biceps brachii muscles. It may be concluded that it is possible to predict a cross-over 1-RM between the two exercises based upon the load-velocity relationship in each exercise, and that training push-ups largely targets the same muscles as the bench press except the deltoid and biceps muscles. For coaches and athletes, the use of this method is a low cost and time-effective alternative for standard 1-RM bench press testing to predict maximal upper body strength.
Analysis of Morphofunctional Variables Associated with Performance in Crossfit® Competitors
Authors: Gómez-Landero Luis Arturo , Frías-Menacho Juan Miguel
Published: July 2020

CrossFit® is a competitive sport and fitness modality characterized by multiple physical capabilities and multi-joint movements. This study aimed to analyse and classify variables related to CrossFit® competitors’ specific performance. Fifteen male CrossFit® competitors were selected (n = 15; 30.57 ± 5.5 years; 1.76 ± 0.06 m; 78.55 ± 9.12 kg). Mean values were obtained for body mass index (25.3 ± 2.14 kg/m2), 4 skinfolds, 1 repetition maximum in the squat (137.60 ± 19.65 kg) and the bench press (101.67 ± 10.64 kg), maximum pull-ups (18.87 ± 5.05), sit-ups in 60 s (46.60 ± 4.22), peak power in the countermovement jump (3908.04 ± 423.68 W), VO2max with a shuttle run test (47.70 ± 4.79 ml kg-1·min-1), and time in the Workout of the Day (WOD) “Fran” (337.13 ± 119.19 s) and “Donkey Kong” (417.47 ± 98.44 s) components. Principal component analysis was conducted to classify variables and to select those most related to each new component (“strength and muscle mass”, “adiposity” and “aerobic capacity”). The correlation matrix was analysed, indicating significant correlations between “Donkey Kong” and VO2max (r = -.675; p “ .01), suprailiac skinfold (r = .713; p “ .01) and sit-ups (r = -.563; p “ .05); and between “Fran” and squat (r = -.528; p “ .05). Three important components characterizing CrossFit® competitors were identified: “strength and muscle mass”, low “adiposity” and “aerobic capacity”. Significant relationships between morphofunctional variables and Crossfit® performance were found in Crossfit® competitors.
Does Photobiomodulation Therapy Enhance Maximal Muscle Strength and Muscle Recovery?
Authors: Tsuk Sharon , Lev Yarden Har , Fox Orly , Carasso Rafael , Dunsky Ayelet
Published: July 2020

Photobiomodulation has been shown to improve tissue and cell functions. We evaluated the influence of photobiomodulation, using a B-Cure laser, on: 1) maximal performance, and 2) muscle recovery after resistance exercise. Two separate crossover randomized double-blinded placebo-controlled trials were conducted. Sixty healthy physical education students (28 men, 32 women), aged 20-35, were recruited (30 participants for each trial). Participants performed two interventions for each experiment, with real lasers (GaAlAs, 808 nm) on three quadricep locations in parallel (overall treatment energy of ~150J) or sham (placebo) treatment. In the first experiment muscle total work (TW) and peak torque (PT) were measured by an isokinetic dynamometer in five repetitions of knee extension, and in the second experiment muscle recovery was measured after the induction of muscle fatigue by evaluating TW and PT in five repetitions of knee extension. There were no differences between treatments (real or sham) regarding the TW (F(1,28) = 1.09, p = .31), or PT (F(1,29) = .056, p = .814). In addition, there was no effect of photobiomodulation on muscle recovery as measured by the TW (F(1,27) = .16, p = .69) or PT (F(1,29) = .056, p = .814). Applying photobiomodulation for 10 min immediately before exercise did not improve muscle function or muscle recovery after fatigue.
Set-to-set Performance Variation in Tennis Grand Slams: Play with Consistency and Risks
Authors: Cui Yixiong , Liu Haoyang , Gómez Miguel-Ángel , Liu Hongyou , Gonçalves Bruno
Published: July 2020

The study analysed the set-to-set variation in performance using match statistics of 146 completed main-draw matches in Australian Open and US Open 2016-2017 men’s singles. Comparisons of technical-tactical and physical performance variables were done between different sets; and the within-match coefficients of variation (CV) of these variables were contrasted between match winning and losing players. All comparisons were realized via standardized (Cohen’s d) mean differences and uncertainty in the true differences was assessed using non-clinical magnitude-based inferences. Results showed that there was possibly to very likely decreases in the serve, net and running related variables (mean difference, ±90%CL: -0.16, ±0.14 to -0.45, ±0.24, small) and an increase in the return and winner related variables (0.17, ±0.24 to 0.24, ±0.14, small) in the last sets when compared to the initial sets, indicating the influence of match fatigue and the player’s choice of match tactics and pacing strategy. Besides, winning players were revealed to have lower CV values in most of performance variables (-0.16, ±0.24 to -0.82, ±0.23, small to moderate) except for the second serve, winner, and physical performance variables (0.25, ±0.26 to 1.6, ±0.25, small to large), indicating that they would sacrifice the consistency to gain more aggressiveness and to dominate the match.