Judul: Simulasi Master Data untuk Data Exchange Evaluasi Kinerja Dosen Berbasis Replikasi Basis Data
Abstrak: Integration of heterogenous databases is a difficult but important task. One of the benefits of integrated data is to ease the process of filling the lecturer’s performance evaluation forms. The required data to fill these forms are spreaded in various database of the existing systems. For example, the lecturer’s identity data are stored in the employee information system database, the education and teaching data are stored in the academic information system database, whereas the research and sevice data are stored in the research and journal information system database. One way to integrate these data is to create data master. This research presents a simulation to create a data master based on data replication which creates an application for the data provider. This application provides the requested data from the master database which are synchronized with the source database. The result of simulation shows that synchronization process will be done when there is a change from the source of database. This synchronization requires about one second to process eight thousand data. Thus, the master database will have the accurate data for filling the lecturer’s performance evaluation forms
Keyword: database synchronization, database replication, data master, database

Judul: Discrete Event Simulation for Modeling Concurrency Control in Distributed Database System
Abstrak: Simulasi komputer merupakan metode untuk menggambarkan suatu sistem pada dunia nyata ke dalam suatu representasi pada komputer. Langkah awal pada proses simulasi adalah memodelkan sistem dalam dunia nyata itu ke dalam suatu model simulasi. Salah satu jenis simulasi komputer adalah Simulasi Kejadian Diskrit, jenis simulasi ini menekankan pemodelan suatu sistem yang berubah pada waktu-waktu tertentu pada suatu selang waktu. Salah satu penerapan Simulasi Kejadian Diskrit adalah pada pemodelan sistem basis data tersebar yang menggunakan Two Phase Request Distributed Scheduler sebagai algoritma kontrol konkurensinya. Kontrol konkurensi adalah pengaturan terhadap konkuren akses terhadap suatu data pada basis data. Pengaturan konkuren akses diperlukan karena terkadang konkuren akses dapat berakibat fatal terhadap informasi yang terdapat pada suatu basis data. Salah satu contohnya adalah dua konkuren akses yang berusaha mengubah nilai suatu data pada basis data; jika tidak ada mekanisme yang mengaturnya, ada kemungkinan hanya efek dari dari salah satu akses saja yang terjadi pada basis data. Pada model simulasi ini didefinisikan kejadian-kejadian yang muncul pada suatu sistem basis data tersebar yang menggunakan Two Phase Request Distributed Scheduler sebagai algoritma kontrol konkurensinya. Selain itu diberikan pula tipe data serta pseudo-code yang digunakan untuk merepresentasikan model simulasi di atas ke dalam suatu bahasa pemrograman, sehingga memungkinkan adanya implementasi dari model simulasi di atas.
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Judul: Insecticidal Activity of Essential Oils Leaves of Cinnamomum spp. (Lauraceae) against Crocidolomia pavonana and Their Phytotoxicity on Broccoli Seedlings
Abstrak: Essential oils from leaves of 13 species of Cinnamomum were tested for their insecticidal activity on the cabbage head caterpillar Crocidolomia pavonana with leaf immerse method. The results showed that the treatment with 1% (w/v) essential oils leaves of C. celebicum, C. multiflorum, C. sintoc, and C. verum caused 21.45, 93.65, 60.30, and 76.10% mortality, respectively. Based on the results of phytotoxicity and insecticidal activity tests, C. multiflorum oil was further tested at 6 concentration levels. In all treatments, larval mortality has occurred at 24 hours after treatment (HAT) and increased at 48 HAT. LC50 of C. multiflorum oil at 24 and 48 HAT was 0.504 and 0.396%, respectively. The treatment with C. multiflorum oil at ≤0.31% did not inhibit the development of C. pavonana larvae. Determination of the chemical constituents of Cinnamomum oils were carried out by gas chromatography-mass spectrometry (GCMS). Totally, 345 compounds were identified. Methyleugenol constituted the main component (49.4%) of leaf essential oil of C. multiflorum and was assumed to be responsible for the insecticidal activity of the oil against C. pavonana larvae. LC50 of pure methyleugenol obtained at 0.365% (48 HAT) and 0.363% (72 HAT). The results showed that C. multiflorum was more effective with LC50 value equivalent to methyleugenol content of 0.32% (24 HAT) and 0.24% (48 HAT).
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