Articles
Coupling of Finite Element and Boundary Element Methods for Structural Analysis of Shear Wall - Frame Building
Made Suarjana;
Ari Wibowo
Jurnal Teknik Sipil Vol 17 No 1 (2010)
Publisher : Institut Teknologi Bandung
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DOI: 10.5614/jts.2010.17.1.2
Abstract. In this study a method to couple the finite element method (FEM) and the boundary element method (BEM) for solving structural analysis problems is investigated and implemented. The investigation is focused on developing and selecting a practical method for integrating the system of linear equations derived from the FEM and the BEM into a combined global system, and to study the efficiency and accuracy of the coupled method. A coupling method that based on transforming the system of equation from the BEM into a form that can be assembled to the global system of equation of the FEM is implemented. The coupled method is useful for solving structural analysis problem of shear wall-frame building. Shear walls are modeled as plane stress BEM regions, while frames are modeled as beam-column FEM regions. The accuracy and efficiency of the coupled method is studied by solving structural analysis problems of an 8 stories shear wall-frame building model. The coupled FEM and BEM method has been implemented for structural analysis of shear wall-frame building in a personal computer program. The coupled method is much more complicated to implement compared to the FEM. However, the benefit of reduced complexity in mesh generation and increased efficiency in both memory requirement and computing time can be very significant.Abstrak. Pada studi ini diteliti metode untuk menggabungkan metode elemen hingga (FEM) dengan metode elemen batas (BEM) dalam menyelesaikan masalah-masalah analisis struktur. Fokus penelitian adalah mengembangkan dan memilih metode yang praktis untuk menggabungkan sistem persamaan linier yang diturunkan dari FEM dan BEM menjadi satu sistem persamaan global, dan untuk mempelajari efisiensi dan akurasi dari metode gabungan. Metode penggabungan yang diterapkan pada dasarnya mentransformasikan sistem persamaan BEM menjadi bentuk yang dapat dirakit ke sistem persamaan global FEM. Sistem gabungan dipergunakan untuk menyelesaikan masalah analisis struktur gedung dengan sistem struktur portal dan dinding geser. Dinding geser dimodelkan dengan BEM plane stress, sedangkan portal dimodelkan dengan FEM balok-kolom. Metode gabungan diterapkan menjadi program komputer. Akurasi dan efisiensi metode gabungan dipelajari dengan menyelesaikan analisis struktur gedung 8 lantai dengan sistem portal-dinding geser. Sistem gabungan lebih rumit dalam proses pemrogramannya, tetapi keuntungan diperoleh dari kemudahan pembuatan model struktur dan peningkatan efisiensi dalam pemakaian memori komputer dan waktu penyelesaian.
Culture-Based Da’wah Digitization to Strengthen Social Harmony in Religion on Plural Netizens
Amin, Risma Fahrul;
Zainuddin, Zainuddin;
Wibowo, Ari
Mawaizh : Jurnal Dakwah dan Pengembangan Sosial Kemanusiaan Vol 14 No 1 (2023): Dakwah And Islamic Civilization
Publisher : Faculty of Da’wa and Islamic Communication, State Institute for Islamic Studies of Syaikh Abdurrahman Siddik Bangka Belitung
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DOI: 10.32923/maw.v14i1.3282
This paper explained how the da'wah digitization which in this era was a major challenge that must be faced by plural netizens in Indonesia. To strengthen social harmony in religion, it was needed culture-based da'wah digitization, especially moderate da'wah to create netizens that would be able to interact well with one another on the internet. Social-religious harmony in cyberspace needed to be strengthened because with a strong social harmony in religion on plural netizens, the harmony of life between religious people or religious communities will be achieved and survived on the plural netizens in particular. The existence of supporting factors and inhibiting factors for the occurrence of social and religious harmony in the plural netizens showed that there was a relation between socio-religious harmony and culture-based da’wah digitization.
Analisis Penawaran dan Permintaan Daging Sapi di Kalimantan Timur
Nazarius, Nadesta;
Wibowo, Ari
Journal of Livestock and Animal Health Vol. 7 No. 1 (2024): February
Publisher : Politeknik Pertanian Negeri Payakumbuh
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DOI: 10.32530/jlah.v7i1.29
Daging Sapi menjadi salah satu komoditas sub-sektor yang banyak dikonsumsi di Kalimantan Timur. Harga daging sapi dapat terbentuk oleh adanya penawaran dan permintaan daging sapi dan ketidakseimbangan produksi dan konsumsi daging sapi mampu menyebabkan kebutuhan yang tidak tercukupi dan perubahan harga. Penelitian ini bertujuan untuk: (1) mengetahui bagaimana pengaruh faktor yang diduga mempengaruhi jumlah permintaan daging sapi di Kalimantan Timur, (2) dan mengetahui bagaimana pengaruh faktor yang diduga mempengaruhi penawaran daging sapi di Kalimantan Timur. Penelitian ini dilakukan pada bulan Agustus 2022 hingga bulan Maret 2023 serta data sekunder dikumpulkan dengan jumlah sampel 10 tahun (2012-2021). Purposive sampling dilakukan dalam menentukan sampel dan lokasi penelitian. Metode regresi linier berganda digunakan dalam analisis data dengan software SPSS 25. Hasil penelitian ini menunjukkan bahwa tidak ada hubungan yang signifikan antara faktor-faktor yang diteliti dengan permintaan dan penawaran daging sapi di Kalimantan Timur. Faktor-faktor ini adalah harga daging sapi, harga daging ayam broiler, harga telur ayam broiler, PDRB per kapita atas dasar harga berlaku, jumlah penduduk, harga sapi hidup, populasi sapi, dan pemasukan daging sapi. Hasilnya menunjukkan bahwa ada faktor-faktor lain yang mungkin memainkan peran yang lebih signifikan dalam mempengaruhi permintaan dan penawaran daging sapi di Kalimantan Timur. Secara keseluruhan, penelitian ini memberikan wawasan tentang faktor-faktor yang dapat memengaruhi permintaan dan penawaran daging sapi di Kalimantan Timur. Namun, penelitian lebih lanjut diperlukan untuk mengidentifikasi faktor-faktor lain yang mungkin berkontribusi terhadap dinamika pasar daging sapi di wilayah ini.
Independensi Kejaksaan Dalam Penegakan Hukum Terhadap Terdakwa Oknum Anggota Kejaksaan Berdasarkan Sistem Peradilan Pidana Di Indonesia
Rinaldi, Ferdian;
Wibowo, Ari;
Fani, Ryan
Cendekia : Jurnal Hukum, Sosial dan Humaniora Vol. 2 No. 3 (2024): Cendekia : Jurnal Hukum, Sosial dan Humaniora
Publisher : Lembaga Pusat Studi Sosial dan Humaniora [LPS2H]
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DOI: 10.5281/zenodo.13308851
Independensi Jaksa hingga sekarang banyak menuai perdebatan. Independensi jaksa penuntut umum ketika menangani perkara yang pelaku atau terdakwanya berasal dari kejaksaan saat ini masih menuai perdebatan, dikarenakan dalam beberapa kasus oknum Jaksa didakwa atau dituntut ringan oleh Jaksa penuntut umum. Semestinya terhadap oknum Jaksa yang melakukan tindak pidana didakwa atau dituntut lebih berat dari masyaraakat umum biasa, dikarenakan sebagai aparat penegak hukum diharapkan tidak melanggar hukum. Adapun Permasalahan bagaimakah Independensi Jaksa penuntut umum dalam menangani perkara oknum Jaksa dan bagaimanakah upaya mewujudkan independensi Jaksa penuntut umum dalam menegakan hukum dihubungkan dengan asas persamaan di muka hukum .Independensi Jaksa penuntut umum dalam menangani perkara oknum Jaksa harus mendapatkan perhatian khusus oleh kejaksaan, dikarenakan rentan terjadinya keberpihakan terhadap oknum Jaksa yang menjadi terdakwa, tidak dapat dipungkiri bahwa kedekatan sebagai sesame anggota kejaksaan tentunya berpengaruh terhadap tuntutan Jaksa. Dengan melakukan penuntutan secara profesional dan integritas Jaksa penuntut umum dapat mengubah kecurigaan atau sentiment negatif terhadap Jaksa penuntut umum, tentunya dapat melahirkan kepercayaan Masyarakat bahwa jaksa penuntut umum sudah menerapkan persamaan di muka hukum. Upaya mewujudkan independensi Jaksa penuntut umum dalam menegakan hukum dihubungkan dengan asas persamaan di muka hukum, diawali dengan membebaskan atau memerdekaan Jaksa penuntut umum dari interfensi baik dari atasan maupun pihak eksternal penguasa atau pemerintah.
Sentiment Analysis of Covid-19 Handling in Indonesia Based on Lexicon Weighting
Ependi, Usman;
Aliya, Sabeli;
Wibowo, Ari
Jurnal Sisfokom (Sistem Informasi dan Komputer) Vol 12, No 1 (2023): MARET
Publisher : ISB Atma Luhur
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DOI: 10.32736/sisfokom.v12i1.1615
Covid-19, a contagious disease, has been classified as a global pandemic. Indonesia, as one of the ASEAN countries, has taken various measures to combat the spread of this disease. One of the government's initiatives to tackle the pandemic is the PeduliLindungi application, through which the public provides feedback on government policies. However, analyzing and comprehending public opinions in a non-subjective manner poses a challenge in objectively evaluating government services. This study aims to address this issue by conducting a sentiment analysis of Covid-19 handling in Indonesia, using a lexicon-based weighting system that includes SentiStrengthID and InSet. The decision tree (DT) machine learning algorithm is utilized to evaluate the polarity results provided by the lexicon. The results indicate that the sentiment polarity towards Covid-19 handling in Indonesia is negative based on both SentiStrengthID and InSet weights. Evaluating machine learning performance with the SentiStrengthID lexicon, the DT-entropy and DT-gini models achieved an accuracy of 82% and 83%, respectively. Similarly, evaluating machine learning performance with the InSet lexicon, the DT-entropy and DT-gini models achieved an accuracy of 81% and 82%, respectively.
Analysis of Students' Errors in Solving Mathematics Story Problems on the System of Linear Equations with Two Variables
Wibowo, Ari;
SYAEKHU, Ahmad;
AMIN, Rahmasinar
JOURNAL OF DIGITAL LEARNING AND DISTANCE EDUCATION Vol. 2 No. 12 (2024): Journal of Digital Learning and Distance Education (JDLDE)
Publisher : RADINKA JAYA UTAMA PUBLISHER
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DOI: 10.56778/jdlde.v2i12.259
This research aims to describe the types of errors and the causes of students making mistakes in solving mathematics story problems. The research method used is qualitative descriptive research. The population of this research was students in Makassar with a total of 23 students and 2 students were determined as the research sample. The results of the research found that most students experienced errors due to a lack of understanding of the existing material and behavior that tended to be careless and hasty so they made mistakes in solving math story problems. There were 4 types of student errors, namely (1) errors in reading the questions occurred because the participant's students failed to understand the content or meaning of story problems and were not able to identify relevant information in mathematics story problems (2) Conceptual errors occur because students do not understand and master the concepts of the material being taught so they are confused when determining what method is appropriate for solving story problems mathematics, (3) errors in procedures/steps occur. After all, students are not careful in carrying out calculation operations. This can be seen in the ability test of students who make calculation errors in the stages of solving story problems. (4) Errors in concluding occur because students think that concluding is not important, they assume that if they have got the final score from the calculation then the solution to the story problem has been completed.
The Importance of Social Capital in Developing Students' Literacy Skills in Elementary Schools
Wibowo, Ari;
Gularso, Dhiniaty;
Purwaningsih, Okti
Indonesian Journal of Educational Research and Review Vol. 7 No. 1: April 2024
Publisher : Universitas Pendidikan Ganesha
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DOI: 10.23887/ijerr.v7i1.68144
Instilling literacy skills from an early age has a significant impact in forming the basis of a child's development and leads to strong literacy skills in the future. This research aims to analyze the role of social capital in growing student literacy in elementary schools. The method used in this research is library research. The procedures for researching this literature are (a) formulating the problem, (b) collecting data, (c) evaluating the suitability of the data, (d) analyzing and interpreting relevant data, and (e) organizing and presenting the results. Recognition of the important role of social capital in fostering literacy skills from an early age in elementary school is key to ensuring that future generations have a strong literacy foundation that will help them succeed in their education and everyday life. This article explains the importance of social capital in fostering literacy skills from an early age through the role of family, school and community. The results of this research support that investing in social capital for students' literacy education has a long-term impact in improving their literacy skills in the future.
TINJAUAN YURIDIS PENISTAAN MAKAM ULAMA DI INDONESIA
Masruroh, Ainul;
Afiyah, Siti;
Wibowo, Ari
HUMANIS: Jurnal Ilmu-Ilmu Sosial dan Humaniora Vol 15 No 2 (2023): Juli
Publisher : LPPM UNISDA
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The act of verbally insulting a deceased person is a crime regulated by the legal rules in force in Indonesia (KUHP). Open access allows various lectures and writings to become narratives that encourage hostility and hatred. In this case, insulting the cleric's grave gave rise to polarization and demonstrations. For this reason, it is necessary to study in more depth the elements of criminal liability that can be given to perpetrators of insults. The aim of this research is to find out how positive law regulates acts of insulting people who have died, even though the person being insulted has died. The research carried out is normative juridical research using primary, secondary, and tertiary legal materials. After the data is collected, it is then analyzed systematically and linked to legal materials. The results of this research show that even though the object of insult is a person who has died, the law regulates criminal acts of insult, which can be applied to insulting the graves of ulama. These regulations are regulated in articles 320 and 321 of the Criminal Code and articles 27 and 28 of the ITE Law.
Miskonsepsi Mahasiswa Pendidikan Guru Madrasah Ibtidaiyah Tentang Higher Order Thinking Skill (HOTS)
Wibowo, Ari;
Bisri , Moh.;
Rahma Dewi , Erlinda;
Astuti , Wiwin
Dirasah : Jurnal Studi Ilmu dan Manajemen Pendidikan Islam Vol. 7 No. 1 (2024): DIRASAH
Publisher : Institut Agama Islam (IAI) Faqih Asy'ari Kediri
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DOI: 10.58401/dirasah.v7i1.792
This research is aimed at discussing misconceptions of college students of Islamic elementary school teacher education about higher-order thinking skills (HOTS). The method used in this research is qualitative and quantitative descriptive method. This research is conducted in the odd semester of the 2022/2023 academic year. The respondents are 64 fifth-semester college students of an Islamic elementary school teacher education study program, education faculty, State Islamic University of Raden Mas Said Surakarta. Twenty-five true-false questions are used to review misconceptions about HOTS. Most questions (63 %) are of medium-level difficulty, 30 % of questions are difficult, and 7 % questions are easy. Misconceptions about HOTS that are difficult for respondents, namely: (1) Kind of HOTS questions will be HOTS questions although tested at different time, (2) The questions having been made by using Bloom Taxonomy auxiliary verbs, they have been able to measure wished question level, (3) HOTS questions must be made in scientific sentences and need very good ability to understand those sentences, (4) By discussing contextual problem, automatically the questions will be HOTS, (5) Questions dealing with stimulus and contextual are always HOTS questions, and (6) LOTS (Low Order Thinking Skill) questions without stimulus will be HOTS questions by adding stimulus.
Identifikasi Karakteristik Morfometrik Ayam Broiler (Gallus domesticus) Di Kandang Closed House Kebun Percobaan Fakultas Pertanian Universitas Mulawarman Kota Samarinda
Isnadi;
Suhardi;
Wibowo, Ari
Jurnal Sains Peternakan Vol 12 No 01 (2024): Jurnal Sains Peternakan
Publisher : Fakultas Peternakan, Universitas PGRI Kanjuruhan Malang
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DOI: 10.21067/jsp.v12i01.10264
Penampakan morfometrik ayam broiler strain Lohman (MB 202) yang dipelihara menggunakan kandang closed house penting untuk diketahui guna mendukung program pembudidayaan yang berkelanjutan dengan proses pembibitan yang baik dan terkontrol. Penelitian ini dilakukan untuk mengidentifikasi karakteristik kualitatif dan kuantitatif ayam broiler strain Lohman (MB 202), menggunakan 55 ekor ayam broiler strain Lohman (MB 202) yang dipelihara di kandang closed house kebun percobaan Fakultas Pertanian Universitas Mulawarman Kota Samarinda dengan mengambil data primer dan sekunder lalu diolah secara deskriptif dan konfirmatif dengan variabel yang diukur adalah rata-rata yang didapat dari setiap variabel yang dimasukan. Penelitian ini menunjukan bahwa karakteristik kualitatif ayam broiler strain Lohman strain Lohman (MB 202), pada umur 5 minggu memiliki keseragaman 100% dalam semua sifat, seperti warna jengger yang berwarna merah pucat, warna paruh dan warna ceker berwarna kuning, warna bulu adalah putih. Karakteristik kuantitatif ayam broiler strain Lohman (MB 202) pada beberapa bagian seperti bobot badan, lingkar badan, lebar badan, panjang badan, panjang leher, panjang sayap, panjang femur dan shank terus mengalami peningkatan pertumbuhan yang pesat hingga umur minggu 4, sedangkan pada minggu ke-4 menuju minggu ke-5 pertumbuhannya menurun karena sudah mendekati umur dewasa kelamin sehingga pertumbuhan tulangnya menurun. Panjang punggung sekali tidak mengalami pertumbuhan sedikitpun pada minggu ke-2 menuju minggu ke-3. Pada bagian paruh dan tibia terus menerus mengalami pertumbuhan namun sangatlah lambat.