Judul: Rekomendasi Penambahan Link pada Web Berdasarkan Pola Akses Pengguna
Abstrak: Struktur web yang baik sangat diperlukan dalam pengembangan sebuah web. Akan tetapi, struktur yang baik menurut pengembang belum tentu sesuai dengan harapan pengguna. Halaman atau informasi yang dicari pengguna (halaman target) seringkali tidak ditemukan pada lokasi yang diharapkan pengguna (lokasi harapan), tetapi berada pada lokasi lain yang telah ditentukan pengembang (lokasi aktual). Oleh karena itu, diperlukan suatu cara untuk memperbaiki struktur web sehingga struktur web secara logik sesuai dengan harapan pengguna.
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Judul: The Recommendation System of Hyperlink Addition on a Website based on Website's Data Log.
Abstrak: A good website structure is needed by the website visitors. The website structure which is created by the website developer should be in accordance with user preferences. The easier the user can find the target page, the better the website structure is. However if the user still get some difficulties in finding the location of the target page, website developer must change the website structure. Data logs from the website can help developers to improve the structure of the website. Data log should pass through the process of data preprocessing which are data cleaning, user identification, session identification, path completion and transaction identification. After that, expectation location will be searched in the data log by using Find Expectation Location algorithm. Location expectations are then processed using the optimization algorithm (FirstOnly and OptimizeBenefit) to get the recommendation of adding a page link. Finally the improved structure will be displayed using a scalable vector graphic (SVG). Keyword : website structure, find expectation location algorithm, data preprocessing, visualitation, scalable vector graphic (svg).
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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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