bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengembangan Media Pembelajaran Pendidikan Agama Islam Berbasis Information and Communications Technology
Authors: Pambudi Muhammad Sidiq , Makhrus Makhrus
Published: May 2022

Perkembangan zaman saat ini cukup memberikan pengaruh signifikan di setiap lini kehidupan, tidak terkecuali dalam bidang pendidikan. Penelitian ini memiliki tujuan dalam mengkaji penggunaan dan pengembangan media pembelajaran ICT di SMK Muhammadiyah 1 Purbalingga lebih spesifiknya terhadap pra, proses, dan pasca pembelajaran PAI. Jenis penelitian yang digunakan adalah penelitian lapangan (field research) dengan pendekatan kualitatif kuantitatif (campuran). Sumber data yang yang peneliti gunakan meliputi data primer berupa wawancara dengan narasumber yaitu kepala sekolah dan guru PAI, dan sekunder yang meliputi buku, jurnal, dan literatur teks lainnya. Peneliti mengumpulkan data berdasarkan hasil wawancara, observasi, dokumentasi, dan angket yang dibagikan kepada peserta didik. Kemudian untuk analisis data yang peneliti gunakan meliputi reduksi data, sajian data, dan penarikan kesimpulan/verifikasi. Information and Communication Technology (ICT) memiliki istilah umum dimana merujuk pada teknologi komputer. Penggunaan dan pengembangan menjadi suatu hal yang penting dalam pelaksanaan pembelajaran, terutama media pembelajaran. Perkembangan cukup pesat juga menjadi sebuah keharusan dalam adaptasi dengan situasai karena kehadiran teknologi-teknologi masa kini. Penggunaan ICT di SMK Muhammadiyah 1 Purbalingga e-learning menjadi media utama dalam pelaksanaan pembelajaran dengan pesatnya perkembangan dan teknologi apalagi masih dalam situasi pandemi Covid-19. Media ICT tersebut memberikan kemudahan dalam pelaksanaan pembelajaran khususnya mata pelajaran PAI. Kemudian, selain dari pada manfaat terdapat kendala dalam pelaksanaan pembelajaran menggunakan media ICT tersebut seperti guru yang lanjut usia karena mereka belum terbiasa dengan ICT tersebut sehingga mengharuskan adaptasi dan memerlukan. Pelaksanaan pembelajaaran menggunakan media ICT dalam terhadap mata pelajaran PAI adalah guru mempersiapkan perlengkapan mengajar berupa; administrasi, laptop, dan internet guna membuka laman elearning.smkmusaga.sch.id sebagai media utama dalam pelaksanaan pembelajaran. Selain laman tersebut guru juga menggunakan media lain guna mendukung pemaksimalan pembelajaran PAI. Setelah pembelajaran terlaksana dengan baik guru mengevaluasi hasil belajar peserta didik, seperti memberikan soal menggunakan laman elearning.smkmusaga.sch.id, selain laman tersebut guru juga menggunakan google form.
Efektivitas Media Microsoft Power Point dalam Peningkatan Minat Belajar Pendidikan Agama Islam
Authors: Sari Atika , Darodjat Darodjat
Published: May 2022

Penelitian ini bertujuan untuk mengkaji bagaimana keefektifan media Microsoft Power Point dalam peningkatkan minat belajar PAI pada siswa kelas X di SMK Muhammadiyah 1 Ajibarang. Penelitian ini merupakan jenis penelitian pelaksanaan tindakan kelas (PTK). Teknik pengumpulan data menggunakan observasi, wawancara, dokumentasi dan angket dengan Teknik analisis data menggunakan deskriptif kualititaf berupa reduksi data, penyajian data, menarik kesimpulan dan rumus efektifitas dan kuantitaf menggunakan rumus rata-rata dan presentase. Hasil dari penelitian menunjukan bahwa efektivitas media microsoft power point dalam peningkatan minat belajar Pai pada siswa kelas X di SMK Muhammadiyah 1 Ajibarang yaitu efektif dengan siswa aktif dan antusias pada saat pembelajaran. berdasarkan nilai rata pada angket juga mengalami kenaikan pada saat siklus pertama 68,8% sedangkan pada siklus ke dua 76,14 jadi ada peningkatan minat belajar PAI.
Efektivitas Implementasi Pendekatan Kontekstual dalam Pembelajaran Aqidah Akhlak Materi Berpakaian Sesuai Syariat Islam
Authors: Wulandari Wulandari , Wage Wage
Published: May 2022

Learning Aqidah Akhlak as one of the lessons that is quite liked. Especially if the  subject matter is delivered with an interesting approach. Students enthusiastically and diligently carry out every lesson created by the teacher and are willing to carry out practical activities ordered by the teacher when teaching. For this reason, a teaching approach that meets these requirements is needed. One teaching approach that can be judged to meet the requirements and conceptual framework is the contextual approach. The purpose of this study was to describe the course of learning the moral aqidah material on dressing according to Islamic shari'ah for class X students of SMK Muhammadiyah 1 Ajibarang and to determine the effectiveness of implementing a contextual approach in learning aqidah morals material dressing according to Islamic law for class X students of SMK Muhammadiyah 1 Ajibarang. This research method uses field research, namely the author directly conducts research on the spot to obtain interview data, observation and documentation. Qualitative description is used to present the data, and the type of research used in this study is qualitative descriptive research. This study shows that the effectiveness of the implementation of the contextual approach in learning aqidah morals for class X in dressing according to Islamic law at SMK Muhammadiyah 1 Ajibarang has been going well and has proven to be effective, it can be seen from the results of the assessment carried out by the teacher after the lesson is finished.
Kegiatan Kelompok Kerja Kepala Madrasah Aliyah dalam Meningkatkan Kualitas Guru Pendidikan Agama Islam
Authors: Majiid Muhammad Luthful , Sulaeman A.
Published: May 2022

This study aims to determine the process, and the activities of the working group of the Head of Madrasah Aliyah in improving the quality of teachers of Islamic religious education subjects in Banyumas Regency. This type of research is descriptive qualitative. Data collection methods used in this study are observation, interviews, and documentation. Then the data analysis used by the researcher is qualitative data analysis, while the data analysis technique uses data reduction, data presentation, and data verification. With the efforts carried out such as Discourse on planning and training for teachers with the theme of making grids and questions, finalizing the cost of the end of the semester assessment, deliberations regarding the acceptance of new students, preparation of the national standard madrasah examination committee, deliberations on the national standard madrasa exam model are computer best tests, reports national standard madrasah examination committee, submission of master questions, socialization of school operational costs for national standard madrasa final exams and input for template 2, madrasa exam committee reports and reports from the education and training committee, meeting with the head of the madrasa education section, plans for the new school year and reports from the education committee and exercises, meetings with curriculum groups, curriculum development at the education unit level, meetings with madrasah operator forums, evaluation of HOTS-based learning, and so on. While the obstacles faced, there were obstacles in the Final Semester Assessment (PAS) related to grids and questions. The application used in the National Standardized Madrasah Examination (UMBN) cannot be duplicated, many shopping posts have been found that cannot be accounted for, there are Madrasah Aliyah which took part in the training rehearsal but did not send the results, the Madrasah exam was running smoothly temporarily, there were some questions that were still pending. need to be corrected on the input side of the template, there are many complaints about the online learning process in the field of Islamic Religious Education, face-to-face training activities are not permitted, the most obstacles in online learning are related to the delivery of material by teachers in the field of Islamic religious education and the evaluation process of learning outcomes.
Pendidikan Agama dalam Perspektif Sosiologis
Authors: Ishomuddin Ishomuddin
Published: May 2022

Penjelasan tentang perilaku manusia atau individu tidak cukup dengan eksplanasi naturalistic dan individualistic meskipun teori itu sudah sangat lama bertahan di kalangan sosiolog tetapi selalu mendapat kritik yang oleh sosiolog kontemporer. Eksplanasi naturalistic dan individualistic perilaku manusia seolah-olah berada dalam dunianya sendiri lepas dari sosial yang mengitarinya. Itulah kritik sosiolog mainstream seperti Emile Durkheim, Max Weber, and psikolog B. F. Skinner. Di dalam sosiologi selain kritik dua eksplanasi tersebut di atas juga ada perbedaan teoretik melihat manusia dalam perannya subjek atau obyek. Meskipun ketiga tokoh tersebut berada dalam perspektif yang sama, sosiologi, tetap menarik untuk dipelajari. Rumitnya melihat peran manusia dari dimensi sosiologis hingga dalam dunia pendidikan mengatakan manusia itu subyek sekaligus obyek pendidikan. Lebih kompleks jika kajian manusia dipandang dari sudut paradigma irfani di luar nalar manusia berbeda dengan sudut pandangan bayani dan burhani. Manusia tidak cukup dikatakan sebagai makhluk unik, misteri tetapi manusia itu senantiasa bersama ruh atau hati dalam arti substansial yang tidak dilihat dalam perspektif sosiologis.
Face-To-Face Or Online Speaking Practice: A Comparison of Students’ Foreign Language Classroom Anxiety Level
Authors: Yaniafari Rahmati Putri , Rihardini Ajeng Ayu
Published: May 2022

Speaking using foreign language in front of other people can be one of the most anxiety-provoking situations. Learners who does not enjoy interacting with other people or being the center of attention may exhibit extreme anxiety when they are asked to take parts in oral presentation, discussion, or any other kind of language activities. A study found that online discussion may decrease the effect. It provides a non-threatening situation for learners who are shy and withdrawn. This survey study aims to see whether it is also applied in Indonesian tertiary education by investigating and comparing the learners' level of anxiety in face to face speaking class before Covid-19 pandemic and online speaking class during the pandemic. 120 students who experienced both speaking courses before and during the pandemic participated in the survey.  Consistent with the result of other studies, this study found that in average, learners feel less anxious during during online speaking class (48,41%) compare to face-to-face class (60,96%).
Peer Instruction In A Flipped Learning Environment: Examining ESL Students’ Participation In Writing Argumentative Essays
Authors: Singh Amreet Kaur Jageer
Published: May 2022

Over the years, peer instruction and flipped learning approach has indicated its usefulness in teaching and learning. However, studies on how peer instruction in a flipped learning environment encourage active student participation in writing remain limited in Malaysia. Therefore, this study examines ESL students' participation during peer instruction in the flipped learning environment when composing argumentative essays. A total of 120 upper intermediate students undergoing an English proficiency course at a teacher education institution in Malaysia participated in this study. Qualitative data were gathered from student assessment forms (pair work and group work), lesson study logs, EdPuzzle video quizzes, and samples of student worksheets. Descriptive interpretations and thematic analysis were used to analyse textual data. The findings revealed that ESL students participated in this study by engaging themselves in interactions during in-class writing activities, contributing knowledge to others, getting prepared with the essential concepts and content before class, focusing on the task, and assessing the quality of argumentative writing. The findings implicate that teachers should consider the use of peer instruction in a flipped learning environment for students to engage actively in the teaching and learning of argumentative essay writing.
Describing A Systematic Reflection for Pre-Service Teachers’ Professional Identity: A Case Study
Authors: Cendra Anastasia Nelladia , Budiraharjo Markus
Published: May 2022

To fill the gap and add literature on systematic reflections in the area of teacher identity developments, this research, which is a part of a larger case study, described how reflection class followed by pre-service teachers of English language in a teacher development program in Indonesia (PPG Pra-jabatan) was conducted. Using a single case study with embedded design and multiple data sources (observations, interviews, and document analysis), this research found that in its effort to help pre-service teachers' identity development, the reflection class followed a certain procedure that comprises of two phases (i.e. reflection phase and publication preparation phase). In addition, this research also found some protocols that were adhered by the reflection class (i.e. involving social reflection, providing a safe and secure learning environment, feedback provision to the reflections, and giving appropriate prompts). This research recommends the teacher education and teacher professional development programs give more attention to how reflection is conducted. In particular, it is suggested that some protocols of conducting a good reflection are considered so that the pre-service teachers can make the most of the reflective activities.
Pengaruh Pemberdayaan Kinerja Fungsional Pustakawan Terhadap Kualitas Perpustakaan (Studi Kasus Perpustakaan Daerah Kota Kediri)
Authors: Hariyanti Sri , Noviliya
Published: May 2022

Perpustakaan memiliki peran yang penting dalam menunjang sebuah mutu pendidikan. Hal ini perlu di sadari bahwa dari tahun ke tahun terjadi penurunan dari segi sektor pendidikan. Dengan adanya pemberdayaan dalam tenaga fungsional pustakawan diharapkan dapat meningkatkan kualitas perpustakaan, dimana akan berimbas pada kualitas pendidikan karena dalam lembaga atau sekolah, perpustakaan merupakan salah satu faktor penunjang dalam aktifitas belajar mengajar. Berdasarkan hal tersebut, peneliti akan membahas mengenai pemberdayaan kinerja dalam kegiatan fungsional pustakawan, dan beberapa faktor yang mempengaruhi pemberdayaan kinerja pustakawan, serta mengidentifikasi faktor-faktor yang menjadi penghambat atau kendala pada kegiatan fungsional pustakawan dalam mengembangkan kualitas perpustakaan. Dalam penelitian ini digunakan metode kualitatif yaitu melalui observasi dan wawancara, serta menggunakan studi literatur. Hasil yang didapatkan dari penelitian ini menunjukkan bahwa adanya pengaruh pemberdayaan kinerja pustakawan dengan kualitas perpustakaan di perpustakaan daerah kota kediri , dimana pustakawan dituntut untuk lebih professional, memiliki etos kerja yang tinggi, kompeten dalam bidangnya, serta adanya upaya-upaya perbaikan beberapa faktor penghambat.
Fungsi Pengawasan dalam Lembaga Pendidikan di Era Revolusi Industri 4.0 Guna Menciptakan Profesionalitas Kerja
Authors: Yaqin Ainul , Syafi’i Imam
Published: May 2022

Pengawasan dalam lembaga pendidikan Islam merupakan upaya untuk meningkatkan kualitas baik itu individu atau seluruh komponen yang terdapat dalam sebuah lembaga/ instansi yang terkait guna menciptakan suatu lembaga yang berkompeten dan berkualitas. Ada beberapa cara yang dapat kita tempuh guna menciptakan lembaga yang berkompeten yakni diantaranya adalah membentuk pribadi individu pekerja yang profesionalitas yaitu bisa melalui diklat atau training yang menunjang kemampuan tiap-tiap bagian individu tersebut, selain itu bisa dilakukan cara lain yaitu dengan cara pengawas menilai tiap individu yang ada dalam lembaga tersebut apakah performa kerjanya sudah cukup baik atau dirasa kurang baik jikalau kurang maka harus segera dilakukan evaluasi kerja supaya nantinya tidak berdampak kepada penilaian kepuasan konsumen. Di era industri 4.0 banyak sekali persaingan baik itu di dalam dunia kerja/ maupun antar lembaga pendidikan terlebih lagi dalam penggunaan media sosial maka dizaman yang saat ini serba menggunakan media elektronik kita harus menguasainya agar lembaga kita tidak kalah saing dengan lembaga yang lainnya, lembaga islam harus berinovasi seiring dengan perkembangan zaman supaya masih di minati oleh orang tua siswa karena pada saat ini lembaga pendidikan islam kadang dianngap remeh karena kadang lulusannya kurang bersaing ketika terjun disebuah masyarakat, ataupun program yang disuatu sekolah tersebut kurang menarik jikalau dibandingkan lembaga pendidikan yang lainnya. Maka disini penulis berupaya memberikan solusi terkait permasalahan diatas.
Preferensi Masyarakat dalam Pemilihan Lembaga Pendidikan Islam: Studi Pada SD NU Insan Cendekia Kediri
Authors: Khasbulloh Muhammad Nabil
Published: May 2022

Pendidikan semakin mendapatkan perhatian dari berbagai kalangan. Tuntutan dan kebutuhan masyarakat akan pendidikan yang berkualitas semakin tinggi. Mayarakat memerlukan pendidikan yang dapat mengikuti perkembangan zaman. Konsekuensinya, lembaga pendidikan dituntut untuk dapat memenuhi kebutuhan masyarakat akan ilmu-ilmu yang aktual. Masyarakat sebagai orang tua calon siswa memiliki andil besar dalam penentuan sekolah anaknya. Masyarakat akan mencari sekolah yang bermutu bagi anak mereka termasuk sekolah dasar (SD). Menanggapi hal tersebut, setiap lembaga pendidikan akan berlomba-lomba untuk dapat menarik minat masyarakat khususnya orang tua dalam menyekolahkan anaknya. SD NU Insan Cendekia Kediri merupakan sekolah dengan konsep Islamic dan fullday school yang memiliki citra baik dan favorit di masyarakat. Keberhasilan sekolah tersebut dalam kiprahnya sebagai lembaga pendidikan Islam menjadi menarik untuk diteliti. Penelitian ini menggunakan pendekatan kualitatif, sedangkan jenis penelitiannya menggunakan studi kasus. Sumber data langsung bisa dikumpulkan dengan latar alami (natural setting). Pengumpulan data dilakukan dengan metode wawancara, observasi, dan dokumentasi. Data dianalisis dengan cara mereduksi, display, mengambil kesimpulan dan verifikasi data. Untuk menguji keabsahan data dilakukan melalui kredibilitas, transferabilitas, dependabilitas, dan konfirmabilitas. Hasil penelitian ini adalah: preferensi masyarakat dalam pemilihan lembaga pendidikan Islam SD NU Insan Cendekia Kediri, yaitu: pertama, sekolah yang berbasis keagamaan (religiusitas), kedua, sekolah memiliki fasilitas sarana-prasarana yang representatif dan memadai, ketiga, sekolah memiliki budaya yang baik, keempat, sekolah menawarkan berbagai kekhasan dan keunggulan, kelima, sekolah sebagai lembaga pendidikan yang berkualitas, keenam, lokasi sekolah strategis.
The Role of Parents from Various Backgrounds Toward Online Learning In Elementary School Due to The Covid-19 Pandemic At Sidoarjo
Authors: Zuhrotunisa Eviana Indah Kumala  , Ahmad Misbahul Munir  , Bakhrul Huda
Published: May 2022

The purpose of this research was to identify how the implementation model of online learning is conducted by children aged 8-10 years in Sidoarjo and how the role of their parents with different backgrounds in online learning. The research method used was qualitative research with a case study. Data collection techniques in this study used interviews and documentation. For data analysis, there were two stages utilized, namely data reduction, and data presentation. The findings of this study showed that the implementation of online learning was by utilizing the WhatsApp application because it is considered to be more universal and straightforward. Thus, children aged 8 to 10 years old in Sidoarjo could learn online. In addition, Google Classroom was employed for exercises or exams. While the involvement of parents from several backgrounds in online learning was highlighted to be quite similar, such as (1) assisting children in learning and doing assignments, (2) supervising children in using cell phones, (3) explaining the material if they did not understood, (4) providing learning facilities such as cellphones or internet quotas, and (5) affording motivation or support.
Penguatan dan Peningkatan Mutu Pembelajaran Al Quran Melalui Training Metode Baca Tulis dan Menghafal Al Quran Yanbu’a Bagi Pengajar dan Santri
Authors: Khunaifi A’an Yusuf , Muhamad Hasan Sadili
Published: May 2022

Al-qur’an adalah sumber utama ajaran agama islam yang dijadikan pedoman dalam pendidikan agama Islam. Untuk itu pembelajaran al-Qur’an sangatlah penting dan menjadi dasar dalam pendidikan agama Islam. Pembelajaran al-Quran dengan menggunkan metode yang baik tentu akan dapat memberikan hasil yang baik pula dalam meningkatkan mutu generasi al-Qur’an serta pendidikan al-Qur’an. Pembelajaran al-Qur’an yang menggunakan metode yanbu'a bisa dijadikan solusi untuk mengatasi problem penuruan kualitas generasi al-Qur’an. Pendekatan penelitian yang digunakan dalam penelitian ini adalah kualitatif dengan jenis studi kasus. Dalam penelitian ini teknik pengumpulan data adalah wawancara, observasi, dan dokumentasi. Pengujian validitas data dilaksanakan dengan cara menerapkan teknik triangulasi. Hasil penelitian ini menunjukkan pertama: penambahan kegiatan sorogan metode yanbu'a yang membuat para santri dan tenaga pengajar semakin antusias; kedua: para santri dan tenaga pengajar setiap hari langsung mempraktikkan metode yanbu'a yang langusng diawasi oleh pemateri sehingga hasil evaluasi terdapat penguatan mengajar bagi para guru dan peningkatan mutu membaca al-Qur'an bagi para santri; ketiga: dengan adanya training ini yayasan ulumiyah al-makruf memiliki calon pengajar metode yanbu'a yang memadai sehingga tidak terjadi kekosongan pemateri dalam pembelajaran membaca alqur'an dengan metode yanbu'a.
Strategi Ustadzah Untuk Meningkatkan Motivasi Lansia Dalam Pembelajaran al-Qur’an
Authors: Aprilia Ayu Nila Sari  , Faridi  , Zulfikar Yusuf
Published: May 2022

This study aims to describe the efforts of muslim teacher in providing motivation to the elderly in the Ta'lim Nur Hasanah Sawojajar Malang Council. This research uses a qualitative approach with the type of case study research. While the objects in this study were the chairman of the assembly, ustadzah and 5 elderly people at the Ta'lim Council of Nur Hasanah Sawojajar Malang. The selection of the Ta'lim Council of Nur Hasanah Sawojajar Malang as a research site was based on the lack of people who no longer studied the Qur'an, but it turned out that there were still elderly people who had various limitations starting to study the Qur'an. With these limitations, the researcher wants to know the efforts of the cleric in motivating the elderly to continue to be istiqomah in studying the Qur'an. Data was collected through observation, interview, and documentation techniques. Meanwhile, data analysis was carried out by collecting data, reducing data, presenting data and making conclusions. The results showed that: the efforts given by the cleric were: 1). Awakening the interest of the elderly to return to reading the Qur'an, 2). Creating a pleasant learning atmosphere, and 3). Instilling positive values ​​in everyday life.
Quantitative Phytochemical Screening and In-vitro Antioxidant Activities of Jatropha gossypifolia L. Leaf Extracts Aiming Antimicrobial and Therapeutical Applications
Authors: Dezoumbe Donhai Honoré , James Ronald Bayoï , Roger Djoulde Darman , François Xavier Etoa
Published: May 2022

Total phenolic (polyphenols, flavonoids, and condensed tannins) contents and antioxidant property (DPPH, ABTS, FRAP) were evaluated in hexane (HE), acetone (AC), ethanol (ET), 70% (v/v) ethanol/water (EW), and powder extracts of Jatropha gossypifolia leaves using spectrophotometric methods. The lowest and highest contents of polyphenols (10.27 ± 0.36 and 21.23 ± 0.95 mg GAE/g), flavonoids (4.83 ±0.42 and 12.53 ±0.58 mg QE/g), and condensed tannins (3.03 ± 0.18 and 7.13 ± 0.12 mg CE/g) were recorded in powder and EW, respectively. EW exhibited the highest scavenging activities displayed by the lowest IC50 values (0.23±0.01 mg/mL DPPH and 0.2±0.03 mg/mL ABTS). Moreover, it recorded the highest reducing power (92.85±1.25 mg AAE/g), followed by HE (72.73±1.99 mg AAE/g) and AC (41.84±0.47 mg AAE/g). Relevant correlations were found between the polyphenols, flavonoids, condensed tannins and reducing antioxidant power (r = 0.986, p < 0.01; r = 0.958, p < 0.01; r =0.950, p < 0.05; respectively). Based on their phytochemical and antioxidant properties, PCA classified the five extracts into three distinct clusters. The results of this study indicate that EW contains powerful bioactive molecules with noteworthy antiradical and electron donating properties. Therefore, it may be a promising candidate in the search for natural compounds with therapeutic and food/crop preservative applications.
ОСОБЕННОСТИ ЧИСЛЕННОГО МОДЕЛИРОВАНИЯ ВОСПЛАМЕНЕНИЯ БЕДНЫХ ВОДОРОДНО-ВОЗДУШНЫХ СМЕСЕЙ
Authors:   Федеральный исследовательский центр химической физики им. Н. Н. Семенова Российской академии наук, ТЕРЕЗА А.М. , АГАФОНОВ Г.Л. ,   Федеральный исследовательский центр химической физики им. Н. Н. Семенова Российской академии наук, АНДЕРЖАНОВ Э.К. ,   Федеральный исследовательский центр химической физики им. Н. Н. Семенова Российской академии наук, МЕДВЕДЕВ С.П. ,   Федеральный исследовательский центр химической физики им. Н. Н. Семенова Российской академии наук, ХОМИК С.В. ,   Федеральный исследовательский центр химической физики им. Н. Н. Семенова Российской академии наук
Published: May 2022

Проведено численное моделирование задержек воспламенения т и скорости ламинарного горения Sl бедных водородно-воздушных смесей. Рассчитаны задержки воспламенения т и скорость ламинарного горения SL в диапазоне от 6% до 14% водорода при начальном давлении 1 и 6 атм и температуре 800-2000 К. Анализ расчетов с использованием различных детальных кинетических механизмов (ДКМ), представленных в литературе, показал, что полученные расчетные значения т и SL достаточно близки. В то же время зависимости задержки т и величины тепловыделения от температуры ведут себя по-разному с ростом начального давления. Показано, что в бедных смесях увеличение начальной концентрации Н2 приводит к незначительному уменьшению значения т. Сделан вывод, что для прогнозирования пожаровзрывобезопасности бедных водородно-воздушных смесей можно использовать любой из представленных ДКМ.
ИССЛЕДОВАНИЯ ВЛИЯНИЯ ДОБАВКИ ДИМЕТИЛЭФИРА НА КИНЕТИКУ САЖЕОБРАЗОВАНИЯ В МОДЕЛЬНОМ ПЛОСКОМ ЛАМИНАРНОМ ПЛАМЕНИ ПРЕДВАРИТЕЛЬНО ПЕРЕМЕШАННЫХ ЭТИЛЕНА И ВОЗДУХА
Authors:   Объединенный институт высоких температур Российской академии наук, ГУРЕНЦОВ Е.В. , ДРАКОН А.В. ,   Объединенный институт высоких температур Российской академии наук, ЕРЕМИН А.В. ,   Объединенный институт высоких температур Российской академии наук, КОЛОТУШКИН Р.Н. ,   Объединенный институт высоких температур Российской академии наук, ХОДЫКО Е.С. ,   Объединенный институт высоких температур Российской академии наук
Published: May 2022

Представлены результаты экспериментального исследования сажеобразования при добавках диметилэфира (от 0% до 100%) к этиленовоздушному пламени предварительно перемешанных газов. Объемная фракция конденсированной фазы определялась при помощи метода лазерной экстинкции на длине волны 520 нм. Профили температуры в пламени измерялись с помощью термопар. Показано, что добавки диметилэфира в пламя этилена приводят к изменению профиля температуры в пламени и к существенному снижению объемной фракции конденсированной фазы. При замещении от 30% до 60% этилена диметилэфиром наблюдалось снижение объемной фракции сажи до 0,01 ppm, что на порядок меньше этого значения в чисто этиленовом пламени. Проведено кинетическое моделирование роста объемной фракции сажевых частиц во всех исследованных пламенах при помощи кинетических механизмов CREСK и открытого программного пакета OpenSMOKE++. Получено хорошее согласие междуэкспериментальнымиирасчетнымиданнымидляэтиленовоздушныхпламенипламенсдобавками 15%-60% диметилэфира. Для пламен 75%, 90% диметилэфира + этилен и 100% диметилэфира с воздухом экспериментальные значения объемной фракции конденсированной фазы лежали ниже предела чувствительности измерений, а расчетные значения указывали на снижение объемной фракции более чем на два порядка относительно чисто этиленового пламени.
ПОИСК ОПРЕДЕЛЯЮЩИХ ФИЗИЧЕСКИХ ФАКТОРОВ В ВАЛИДАЦИОННЫХ РАСЧЕТАХ ЭКСПЕРИМЕНТАЛЬНОЙ МОДЕЛИ ONERA LAPCAT II С УЧЕТОМ ШЕРОХОВАТОСТИ СТЕНОК КАНАЛА
Authors:   Французская аэрокосмическая лаборатория (ONERA), САБЕЛЬНИКОВ В.А. ,   Центральный аэрогидродинамический институт (ЦАГИ), ТРОШИН А.И. ,   Центральный аэрогидродинамический институт (ЦАГИ),   Московский физико-технический институт (МФТИ), БАХНЭ С. ,   Центральный аэрогидродинамический институт (ЦАГИ),   Московский физико-технический институт (МФТИ), МОЛЕВ С.С. ,   Центральный аэрогидродинамический институт (ЦАГИ), ВЛАСЕНКО В.В. ,   Центральный аэрогидродинамический институт (ЦАГИ),   Московский физико-технический институт (МФТИ)
Published: May 2022

Описаны результаты второго этапа численного моделирования эксперимента ONERA LAPCAT II по высокоскоростному горению водорода в модельном канале. На данном этапе расчеты проводились с учетом шероховатости стенок канала. Представлены результаты расчетов на базе подхода IDDES-SST. Показано, что влияние шероховатости стенок существенно, но не позволяет достичь хорошего согласования с экспериментальными данными. Поиск определяющих физических факторов проводился на базе RANS-расчетов (RANS - Reynolds-averaged Navier-Stokes). Проверено влияние химической кинетики, переменного турбулентного числа Прандтля и высоты шероховатости. Наибольшее влияние на распределение давления по стенкам канала кроме шероховатости оказывает температура стенок канала. Найдена температура стенок, обеспечивающая хорошее согласование с экспериментом ONERA.
PERANCANGAN ALAT UKUR KETINGGIAN PERMUKAN AIR BERBASIS SENSOR ULTRASONIK MAXSONAR MB7389 DAN MIKROKONTROLER ATMega328P
Authors: Padang Elohansen , Afkril Baina , Lewerissa Richard , Morin Jacson Viktor , Mujasam Mujasam
Published: May 2022

In this study, a low-cost water level measurement device based on an ultrasonic sensor was developed. The ultrasonic sensor used is Maxsonar MB7389, and the data acquisition system uses the ATMega328P Microcontroller. Meanwhile, water level measurement data is displayed in real-time on a computer and also stored in a microSD card where data can be retrieved at any time for analysis. The choice of the Maxsonar MB7389 sensor for sensing water levels is based on its superiority in water resistance so that it can be applied in the field, and the measurement resolution is up to millimeters. Meanwhile, the ATMega328P microcontroller contained in the Arduino Uno board has advantages in terms of its relatively low-cost price, ease to program using the open-source Arduino IDE software, supported by many libraries, and modules. Based on the results of laboratory-scale testing, the measurement device developed can measure the water level quite accurately. That can be seen from the average water level measurement error for sensors without a casing of 0.31 cm and sensors with a PVC pipe sheath of 0.25 cm. Then, the value of the Pearson correlation coefficient (R2) is 0.99 for sensors without pipe casings, and 1 for sensors with PVC pipe casings. Then, based on the ripple comparison of the results of the water level measurement, it can be suggested for the measurement of the highly fluctuating water level (such as sea and river) should use a pipe casing. Meanwhile, for measuring the water level in the tank that is not too volatile, you can use a sensor without a pipe casing.
Identifikasi Zona Akuifer Dengan Menggunakan Metode Tahanan Jenis (Resistivity) Konfigurasi Dipole-Dipole Di Kota Manokwari, Papua Barat
Authors: Pamuji Khristian Enggar , Tukan Tobias T , Musyafa Ahmad
Published: May 2022

Penelitian untuk mengidentifikasi keberadaan zona akuifer di Kota Manokwari Provinsi Papua telah dilakukan menggunakan metode Tahanan Jenis (resistivity) konfigurasi dipole-dipole. Lokasi penelitian berada pada satuan fisiografi Terumbu Koral Terangkat. Akuisisi data dilakukan pada 15 lintasan. Panjang masing-masing lintasan survei bervariasi dari 80 m sampai dengan 200 m, dengan spasi elektroda antara 10 sampai dengan 25 m. Hasil penelitian didapatkan bahwa nilai tahanan jenis yang bervariasi, mulai dari yang terendah yakni 9 Ωm sampai yang tertinggi 11.954 Ωm. Variasi tahanan jenis tersebut dipengaruhi oleh kondisi geologi, khususnya kondisi fisiografi Kota Manokwari yang berupa Terumbu Koral Terangkat. Akibat fisiografi tersebut, keberadaan akuifer tersebar tidak merata. Di beberapa lokasi penelitian, zona akuifer dapat dijumpai pada kedalaman 2 meter sampai 60an meter, namun demikian, keberadaan zona akuifer tidak terdeteksi di semua lokasi penelitian.
Klasifikasi Varietas Buah Kiwi dengan Metode Convolutional Neural Networks Menggunakan Keras
Authors: Jakaria Aldi , Mu’minah Sofiyatul , Riana Dwiza , Hadianti Sri
Published: May 2022

Kiwi fruit is known as a fruit rich in benefits because it contains many nutrients, sources as well as high antioxidants. In Indonesia, there are two varieties of kiwi fruit sold in the market, namely green kiwi and golden kiwi and there is one more variety, namely red kiwi. The content of the three varieties is different and the price is also different. Gold kiwi has the highest nutritional content so that the price is above other kiwi varieties, but from the outside the appearance of this kiwi fruit at a glance is the same and many people do not recognize the kiwi variety they will buy even though these three kiwi varieties have different tastes and nutritional content. For this reason, the researcher proposes a classification system for kiwi fruit varieties using the hard CNN method. The CNN method is one of the deep learning methods that can be used to recognize and classify an object in a digital image. Then the preprocessing process is carried out using labeling on the data. Then the CNN architecture is designed with Input containing 320x258x3 neurons. The data was then trained using 25 epochs with an accuracy rate of 0.98. Then the test data using test data get an average accuracy value of 0.987, while for precision and recall it is also the same at 0.987
Kombinasi 3D Convolutional Neural Network Dalam Klasifikasi Citra Hiperspektral Pada Tutupan Lahan
Authors: Florensia Yesinta , Saparudin Saparudin , Samsuryadi Samsuryadi
Published: May 2022

Land cover information is one of the basic variables in determining phenomena on the earth's surface as well as a measuring variable for the development of an area. Land cover with hyperspectral imagery can provide accurate information on the earth's surface. Limited labeled samples and imbalances data are common in land cover hyperspectral image classification. However, the data that available publicly is very limited makes it difficult to evaluate the performance of existing algorithms. Various methods were developed with several public datasets using as few training samples as possible to produce a method that is robust against sample limitations and imbalances data, but these studies have complicated parameters and the accuracy results are not optimal. In this study, several combination of Multiple Spectral Resolution (MSR), 3D Spectral Dilated Convolution (SDC) and Hybrid Convolutional Neural Network (HybridSN) were carried out to increase accuracy in hyperspectral image classification with very small training samples and simpler parameters and computations. This method was tested on two public datasets Indian Pines (IP) and Salinas (SA) with 5% and 1% training data respectively (only 500 training samples) and showed high accuracy results in land cover hyperspectral image classification. The best results were obtained with a combination of SDC and HybridSN methods which were optimized with Adam with 96.58% % Overal Accuracy (OA), 87.83% Average Accuracy (AA) and 96.09% kappa on the IP dataset, and 99.08% Average Accuracy (AA), 99.00% kappa on the SA dataset
Sistem Pendukung Keputusan Penilaian Kinerja Mekanik Menggunakan Metode AHP dan TOPSIS
Authors: Arianto Noprida , Nurahman Nurahman
Published: May 2022

Decision Support (DSS) is a system that was built to solve problems that are managerial or corporate organization designed to develop the effectiveness and productivity of managers to solve problems. PT. Auto Mobil Prima is one of the most popular Hino dealers in Sampit. This dealer is located in Central Kalimantan, precisely on Jl. General Sudirman Km. 2 Sampit and has branches in Pangkalan Bun and Palangka Raya. This study aims to assess the performance of the mechanical employees at PT. Prime Cars. In the assessment process, it is difficult for management to give weight to each criterion. So that it takes quite a long time, there is no system for decision makers that supports the performance appraisal of employees in the mechanics department. From the problems above and based on previous research, it is necessary to have a decision support system for evaluating the performance of employees in the mechanics department at PT. Auto Mobil Prima, one of the methods that can be used is AHP (Anailitycal Hierarchy Process) and TOPSIS (Technique For Others Reference by Similarity to Ideal Solution). This method was chosen because it is able to complete employee performance appraisals based on predetermined criteria. The results of this study are a website for a mechanical performance appraisal decision support system using the AHP (Anailitycal Hierarchy Process) and TOPSIS (Technique For Others Reference by Similarity to Ideal Solution) methods. So it is hoped that it can help PT. Auto Mobil Prima is a more objective mechanical performance decision maker
Sistem Pendukung Keputusan Pemilihan Supplier Dengan Metode AHP Pada Apotek & Laboratorium Klinik Interna Berbasis Web
Authors: Putri Awanda Octavianti , Prasetyaningrum Eka
Published: May 2022

Inventory of products or goods in the form of medicines and others is one of the work activities. In procuring products, in this case drugs, the selection of drug suppliers is very important for a drugstore business, pharmacy or regional hospital. Interna Pharmacy & Clinical Laboratory is a private pharmacy located in Sampit, East Kotawaringin, Central Kalimantan. The problem that exists at the Internal Pharmacy & Clinical Laboratory is the selection of suppliers by comparing several suppliers or only based on the thoughts of the owner, pharmacist or pharmacist assistant. Suppliers are selected based on price, number of discounts given, speed of delivery of goods, completeness of drugs and drug packaging. Selection of suppliers with a system that has been running with various criteria resulted in the selection of suppliers is not accurate and takes time. Based on the problems above, it is very necessary to have a decision support system website using the Analytical Hierarchy Process method. By using a decision support system with the Analytical Hierarchy Process method, the Pharmacy & Internal Clinical Laboratory can make an assessment by comparing each criterion. The output of this research is a decision support system using the Analytical Hierarchy Process method. This study aims to make it easier to select drug suppliers from various criteria, save time in selecting drug suppliers, get good suppliers for the procurement of the necessary drugs
Evaluasi User Experience Platform Video Communication dengan User Experience Questionaire (UEQ)
Authors: Sylvia Chatrine , Angela Angela , Halim Fandi
Published: May 2022

The learning from home (home-based learning) and working from home (work from home) policy which has been going on for more than 1 year since March 2020 after being set by the Minister of Education and Culture (Kemendikbud) has brought many changes in the way to work and study for the academic community, especially students and lecturers. This is also felt by the academic community at STMIK Mikroskil, especially in Information Systems study program who changes their learning from offline to online by utilize various available application platforms such as Microsoft Teams and the Zoom application, especially for its video conferencing features as audio-visual media. With the use of both communication platforms in online learning activities, it is necessary to evaluate its user experience as information to support decision making in order to improve learning management and academic activities in university environment. However, this evaluation activity has never been carried out for the two applications that being used. This study aims to measure the user experience of Microsoft Teams and the Zoom application, especially for its video conference to support the lecturers and students in Information Systems Study Program at STMIK Mikroskil. This measurement is intended to predict and compare the ability of technology elements in the form of user experience of those two applications through an analytical study by applying the User Experience Questionnaire (UEQ) method. The target respondents are lecturers and students, especially in the Information Systems study program in the STMIK Mikroskil environment. The results showed that the comparison of the Microsoft Teams means value was superior to the Zoom application. Therefore, Microsoft Teams is a video conferencing and communication platform that is preferred by students and academics of the STMIK Mikroskil Information Systems study program compared to the Zoom application
Reengineering Proses Bisnis Toko Oleh-Oleh Menggunakan Enterprise Resource Planning Odoo 13 dengan User Acceptance Test sebagai Metode Pengujian Sistem
Authors: Suabdinegara I Kadek , Ayu Putri Gusti Agung , Raharja I Made Sunia
Published: May 2022

Business process engineering is carried out on the business process of Wardani’s souvenir shop which is located at Jl. Monkey Forest, Ubud. This shop was chosen as the research use case because the shop is located in a strategic tourist location in the center of Ubud. Reengineering is focused on the Wardani Store’s business activities in the purchasing, inventory, and sales business functions, where at the time the research was conducted, all processes were still using the manual method. This method often causes problems, such as uncontrolled purchasing of goods, errors in recording purchases and sales of goods, length of calculation in transactions, and unclear information on availability of goods. Therefore, an approach is needed in developing an integrated system in the company's operational activities, and the application of Enterprise Resource Planning (ERP) can be an alternative in overcoming the problems experienced. ERP implementation is carried out by identifying ongoing business processes for purchasing, inventory, and selling goods, then making an integrated system proposal by implementing Odoo 13. System testing is carried out using the User Acceptance Test (UAT) method which is a final testing method for developing a product to validate whether the system built is in accordance with the user's needs or not. The system test results show that the Odoo ERP application is considered quite successful in helping companies in purchasing, inventory, and selling goods, so that business processes become more effective and efficient
Pembobotan Kriteria Dalam Prediksi Meningitis Tuberkulosis Menggunakan Metode SWARA dan Nearest Neighbor
Authors: Assrani Dwika , Sirait Pahala , Andri Andri
Published: May 2022

Weights greatly affect the value and results of decisions or predictions of a test data, a problem that often occurs in the results of the prediction process is the weighting of symptom attributes which is less certain of the value of the weight, thus affecting the prediction results and the level of accuracy of a prediction itself. This study predicts a data using the Nearest Neighbor method where in the process of predicting the attribute weight value does not yet have a definite value for testing. Then we need an attribute weighting for each test attribute to get a definite weight value result. One method that can be applied to attribute weighting is the SWARA method. Based on research conducted to compare the prediction of Meningitis Tuberculosis without SWARA weighting and with SWARA weighting, testing with a ratio of 90:10, 80:20, 70:30 results in disease prediction using the Nearest Neighbor method, there are differences in results and levels of prediction accuracy and the process in prediction helps shorten the time to find prediction results, the highest prediction result using the swara method is 100% accurate and without weighting method is 91%.
Kluster Rata-Rata Lama Sekolah (RLS) Menurut Jenis Kelamin di Provinsi Jawa Tengah dengan K-Means
Authors: Wulandari Ajeng Tiara , Sumarah Jati
Published: May 2022

The average length of school (RLS) describes the level of achievement in school activities of each citizen in a given area. The higher the number of years of schooling, the higher the population's level of education, hence this indicator is critical since it can reveal the quality of a region's human resources. Furthermore, numerous studies have found that the average length of schooling has a major impact on economic growth. This indicates that when the average length of schooling rises, the number of unemployed and poor people in a given area declines, resulting in a positive and considerable impact on economic growth. The goal of the study was to use artificial intelligence to undertake an analysis in the form of a cluster mapping of the Average Length of Schooling in Regencies and Cities in Central Java (AI). This is necessary in order to gain a macro picture of the average years of schooling's progress over the last few years through regional mapping. The data was taken from the Central Java Statistics Agency (BPS) website, and it was based on the subject Average Length of School (RLS) by gender from 2017 to 2019. The k-means method, which is part of clustering data mining, was employed as the solution method. There were two types of clusters used in this study: high and low clusters. RapidMiner software is used to aid the analyzing process. Preprocessing is done before the k-means approach by taking the average value of the number of RLS based on gender from 2017 to 2019. K-means will be used to process the results of the average value obtained. According to the findings, eight provinces (23 percent) were in the high cluster (cluster 1) while 27 provinces (77 percent) were in the low cluster (cluster 0). According to the findings, RLS levels are still low in over 70% of Central Java's locations.
Implementasi Pemilihan Pimpinan Karyawan Operasioal Konveksi Pakaian Menggunakan Metode ROC (Rank Order Centroid) dan TOPSIS
Authors: Hutahaean Jeperson , Mulyani Neni
Published: May 2022

The selection of employee leaders which is an important process for the company and is the most awaited thing by other employees to improve social status, salaries and many others, it is necessary to select employee leaders to become role models and examples and assist company leaders in managing and monitoring other employees for can work as expected by the leadership of the company, in the selection of company leaders it is necessary to choose a computerized process, namely making a decision support system to get the right and good results based on the system and not based on personal interests, in the decision-making process the ROC and Topsis methods are used as a step procedure that helps get a value with a high level of accuracy, the ROC method is used as a method of finding the weight value of each criterion and will continue the process of finding the highest value using the Topsis method as a ai the chosen alternative. The results obtained were 0.591835 as the highest score and the selected candidates in the selection used the ROC and TOPSIS methods