Judul: Masalah penugasan guru : kasus khusus masalah transportasi dengan beban tetap
Abstrak: Masalah Penugasan Guru merupakan masalah penjadwalan mata pelajaran pada guru. Diasumsikan setiap guru dapat mengajar semua mata pelajaran. Dengan keterbatasan waktu luang yang dimiliki oleh masing-masing guru maka diharapkan setiap guru mengajar sesedikit mungkin mata pelajaran yang berbeda. Masalah Penugasan Guru dapat dipandang sebagai kasus khusus dari masalah transportasi. Masalah transportasi berkaitan dengan pengiriman sejumlah barang (unit produksi) dari sumber ke tujuan. Pada masalah penugasan guru, mata pelajaran mewakili "sumber" dan guru mewakili "tujuan". Penawaran yang tersedia di setiap sumber adalah total jam mata pelajaran per minggu, sedangkan permintaan yang diperlukan di setiap tujuan adalah maksimum total jam mengajar guru per minggu. Masalah penugasan guru merupakan masalah pemrograman linear integer campuran. Metode yang ada pada masalah transportasi dapat digunakan untuk menyelesaikan masalah penugasan guru. Solusi optimal ditentukan dengan menggunakan Algoritma Branch and Bound (Pencabangan dan Pembatasan).
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Judul: Penugasan Dosen di Masa Pandemi dengan  Mempertimbangkan Preferensi dan Pemerataan Beban Menggunakan Goal  Programming
Abstrak: Salah satu masalah penjadwalan adalah penjadwalan pengajar di dalam suatu institusi pendidikan. Terdapat beberapa pertimbangan pada penjadwalan pengajar yaitu ketersediaan waktu mengajar, ketersediaan mengajar secara online dan offline, preferensi mengajar dosen, kesesuaian materi yang diajarkan dengan bidang keahlian pengajar, sampai meratanya beban tugas mengajar bagi tiap pengajar. Salah satu penyelesaian masalah penjadwalan ini adalah dengan goal programming. Terdapat dua jenis kendala yang perlu ditinjau, yaitu hard constraints dan soft constraints. Dalam goal programming, akan diminimumkan peubah simpangan yang mengakibatkan soft constraints menyimpang dari nilai yang diharapkan. Model penjadwalan pengajar ini diaplikasikan pada data kasus penjadwalan dosen di Jurusan Matematika Universitas XYZ yang melibatkan penjadwalan untuk mata kuliah dua program studi sarjana, satu program studi magister dan 31 kelas paralel pada program tingkat pertama. Dari hasil implementasi, diperoleh penjadwalan yang memenuhi kendala-kendala dan meratakan beban mengajar dosen selama setahun akademik., One of the scheduling problems is the scheduling of teachers in an educational institution. There are several considerations in teacher scheduling, namely the availability of teaching time, the availability of online and offline teaching, lecturers' teaching preferences, the suitability of the material taught with the teacher's field of expertise, to the even distribution of the teaching task load for each teacher. One solution to this scheduling problem is goal programming. There are two types of constraints reviewed, hard constraints and soft constraints. In goal programming, we minimize the deviation variables, which causes soft constraints to deviate from the expected value. This teacher scheduling model is applied to the case data of lecturer scheduling at the Mathematics Department of XYZ University which involves scheduling for courses for two undergraduate study programs, one master study program and 31 parallel classes in the Joint first level program. The result of the implementation, is a scheduling satisfies the constraints and evens out the teaching load of the lecturers during the academic year.
Keyword: beban mengajar, goal programming, pandemi, penjadwalan dosen

Judul: Co-infection of Infectious Myonecrosis Virus (IMNV) and Vibrio harveyi in Pacific White Shrimp (Litopenaeus vannamei)
Abstrak: L. vannamei production in Indonesia was growing intensively. In 2006, IMN (infectious myonecrosis) disease was confirmed spread to Indonesia shrimp farm and declined shrimp production. The study was conducted to investigate effect of dose of V. harveyi on co-infection with IMNV in L. vannamei as well as development of viral infection. Shrimps juvenile were oral infected with IMNV infected shrimps 10 % feeding rate during 3 days and co-infected with 106, 107 and 108 cfu/ml V. harveyi. Mortality rate was 0 % in control and single infection of V. harveyi except 108 cfu/ml treatment. Mortality pattern demonstrated on co-infection was faster and higher than single IMNV infection in 14 days observation. The density of green colony Vibrio in hepatopancreas of co-infected shrimps collected in 2, 4, 6, 8 and 10 days post infection were higher than V. harveyi single infected (significantly in 10 days post infection). There were no difference of IMN disease development between co-infection and IMNV single infection. It was confirmed by visual gross sign appeared, tissue and lymphoid organ histophatology, organ abnormality, and PCR test. In conclusion, IMN disease caused higher and faster mortality on co-infection with V. harveyi, but not affect to IMN disease development.
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