OPTIMASI TOPOLOGI DAN UKURAN PENAMPANG STRUKTUR RANGKA BATANG BAJA DENGAN METODE METAHEURISTIK

Optimasi topologi dari struktur rangka batang baja memberikan hasil yang lebih optimal dibandingkan optimasi ukuran penampang karena batang dan nodes yang tidak berguna pada struktur dapat dihilangkan. Fungsi objektif dari algoritma metaheuristik adalah untuk meminimalkan massa struktur rangka batang baja terhadap constraints statis dan dinamis berdasarkan studi kasus dan spesifikasi bangunan baja struktural Indonesia, SNI 1729:2015. Empat algoritma yang digunakan pada studi ini adalah: Particle Swarm Optimization, Differential Evolution, Teaching-Learning-Based Optimization, dan Symbiotic Organisms Search. Keempat algoritma tersebut diuji pada studi kasus 24-bar truss. Performa dari algoritma diukur dari lima kriteria massa, yaitu: massa terbaik, terburuk, rata-rata, standar deviasi, dan median dari struktur rangka batang baja. Hasil penelitian menunjukkan SOS menunjukkan performa terbaik pada studi kasus 24-bar truss.

Crack-Brained Professors and Baby Radicals

This chapter chronicles the student newspaper’s evolution to an on-campus daily publication in the 1920s, and how it rapidly professionalized and became both a critical laboratory for aspiring journalists, and helped to push for the creation of a school of journalism at UNC. The chapter also discusses causes the paper fought for or against, including defeat of the 1925 anti-evolution teaching bill in the state legislature, promotion of labor unions and rights in North Carolina’s mills and factories, and freedom for the students to have speakers on campus of all political persuasions. The chapter examines the universities growing reputation as a liberal institution, both in the classical sense and politically, and the beginnings of state politicians and media to question these issues, most notably David Clark. The first attempt to racially integrate the school, by Pauli Murray, is examined. Other topics covered include the Great Depression, the major university cheating scandal of 1936, the burning of all issues of a campus humor magazine considered indecent in 1939, and the anti-war sentiment at UNC, 1939-1941.