The Eccentrically Braced Frame (EBF) system limits the inelastic behavior of the beam links between two eccentric bracings. Tubular shear links have better ductility than WF shear links. This indicates that tubular links are more stable to withstand cyclic loads. In this study, an evaluation of the behavior of the 10-story vertical eccentrically braced frame system using the SAP 2000 application and numerical validation modeling based on the Rahnavard journal with cyclic load analysis using Abaqus was carried out. The SAP 2000 modeling shows that the use of King Cross columns, beams and bracing using Wide Flange, double tubular SHS links with a vertical link length of 400 mm and a distance between vertical links of 800 mm is in accordance with the design control. The results obtained from validation and journalsproduce shear force of 389.9 kN and 400 kN, respectively, with a difference of 2.75%. Kata kunci: rangka bresing eksentrik vertikal, tubular ganda, analisis beban siklik, kontrol desain Abstrak Sistem struktur Eccentrically Braced Frame (EBF) membatasi perilaku inelastis pada link balok yang terletak di antara dua bracing eksentris. Link geser tubular memiliki daktilitas yang lebih baik dari link geser WF. Hal ini menunjukkan bahwa link tubular lebih stabil menahan beban siklik. Dalam penelitian ini, dilakukan evaluasi perilaku sistem rangka bresing eksentrik vertikal 10 lantai menggunakan aplikasi SAP 2000 dan pemodelan validasi numerik berdasarkan jurnal Rahnavard dengan analisis beban siklik menggunakan Abaqus. Pemodelan SAP 2000 menunjukkan bahwa penggunaan kolom King Cross, balok dan bracing menggunakan Wide Flange, link SHS tubular ganda dengan panjang link vertikal 400 mm dan jarak antar link vertikal 800 mm telah sesuai dengan kontrol desain. Pemodelan validasi dan jurnal menghasilkan gaya geser masing-masing sebesar 389,9 kN dan 400 kN dengan selisih 2,75%.
The Covid-19 virus infection has spread rapidly worldwide, making it the first pandemic of the 21st century to have caused many deaths (more than 2 million people died). Some shreds of evidence from a range of sources suggest that the rate of Covid-19 cases in children is relatively low, commonly have asymptomatic or mild symptoms, and have low mortality rates. Data released by the Indonesian Pediatrician Association (IDAI) regarding the mortality rate of children infected with Covid-19 is 42% are infants under one year of age. In addition, there are new reports of severe and life-threatening cases of Covid-19 complication in children, which occur 4-6 weeks after infection, known as Multisystem Inflammatory Disease in Children (MIS-C). In order to control the spreading of Covid-19 infection in children, many countries considered temporarily closing the school. However, in September 2021, the Ministry of Education and Culture of Indonesia decided to reopen the school. Schools that provide face-to-face learning for students are schools located in yellow zones or moderate-risk areas. In order to reopen the school safely, the children, teachers, and parents have to obey some strict safety protocols. Even though physically reopening schools might potentially increase the transmission in the community. Due to anticipate the increase in morbidity and mortality, it is very important to increase public knowledge about the signs and symptoms of COVID-19 in children.
Indeks ROX merupakan rasio saturasi oksigen terhadap fraksi oksigen pada tiap laju pernapasan per menit. Beberapa studi melaporkan indeks ROX bermanfaat sebagai prediktor keberhasilan terapi HFNC pada pasien dewasa. Indeks ROX membantu memprediksi kebutuhan ventilasi mekanik invasif, sehingga menurunkan angka mortalitas dan morbiditas yang terkait dengan penggunaan ventilasi mekanik. Namun literatur mengenai penggunaan indeks ROX pada populasi anak sangat terbatas. Padahal penggunaan HFNC pada pasien anak mengalami peningkatan pesat dan sampai saat ini belum ada indikator keberhasilan HFNC yang bersifat objektif dan baku untuk pasien anak. Tinjauan pustaka ini akan membahas indikasi pemberian HFNC, mekanisme kerja, dan penggunaan indeks ROX pada pasien anak sakit kritis dengan distres napas.
Kerusakan demi kerusakan terus terjadi di dunia. Tidak hanya berupa kerusakan alam, tetapi juga kerusakan sosial. Al-Qur’an sebagai petunjuk dan pedoman bagi manusia dalam menjalani kehidupan, telah menyebutkan tentang fenomena kerusakan (al-fasad) yang terjadi. Al-Qur’an telah menyebut secara umum penyebab terjadinya kerusakan, siapa pelakunya, bagaimana pencegahan dan penyembuhnya. Dalam penelitian ini, kerusakan dipandang sebagai suatu penyakit yang dapat menular dan mewabah. Penelitian ini membahas model matematika tentang penyebaran kerusakan akibat interaksi subpopulasi Faasid (sesuatu yang rusak) dengan subpopulasi rentan kerusakan. Model yang dikonstruksi kemudian disimulasikan dengan Metode Runge-Kutta Orde Empat. Hasil simulasi numerik menunjukkan bahwa tingkat kerentanan individu terhadap kerusakan berperan penting dalam penyebaran kerusakan di suatu lingkungan.
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