Judul: Sistem Pendeteksi Dokumen Plagiat Harfiah pada Dokumen Teks Berbahasa Indonesia dengan Memanfaatkan Mesin Pencari
Abstrak: Search engines can be used to detect plagiarism because search engines are one of the gateways to get source documents. This research aims to establish a corpus of document plagiarism and develops a system that can detect plagiarism by utilizing search engines. The corpus is created by copying passages from 1-3 source documents and restructuring the source documents by translating back and forth with Google Translate. The corpus consists of 100 documents. The documents are extracted into segments consisting of 4-20 words. The segments will be weighted based on the words existence in Indonesian dictionary where words not found in dictionary are given higher weights. Using Google’s search engine, this study successfully detects 100% of the plagiarized documents using only a maximum of 31% segments. On the other hand, using Bing and 40% segment documents only detects 30% of the corpus. The results of this study show that the performance of online plagiarism detection depends on the quality of the search results provided by search engines
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Judul: Sistem Pendeteksi Plagiat Pada Dokumen Teks Berbahasa Indonesia Menggunakan Metode Rouge-N, Rouge-L Dan Rouge-W
Abstrak: Plagiarism is a serious problem in education. This research uses ROUGE-N (N = 3 or trigrams), ROUGE-L, and ROUGE-W (with weighted function f(x2)) at the sentence level to detect plagiarism on Indonesian language text documents. This research aim to obtain a suitable preprocessing for each method of assessment. The preprocessing includes stopword removal and stemming. This research uses clipping based on recall, precision, and f-measure. Analysis is restricted to preprocessing and calculation method used in each assessment method. Stemming improves ROUGE-N, while stopword removal negatively effects ROUGE-N. ROUGE-L and ROUGE-W performs well with f-measure clipping. ROUGE-W is better without stemming.
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Judul: Daily Behavior of Axolotl (Ambystoma mexicanum) in Aquarium Maintenance
Abstrak: Ambystoma mexicanum atau axolotl adalah salamander yang termasuk jenis eksotis dari Meksiko. Salamander ini potensial dipelihara sebagai hewan eksotis didukung insang eksternal dan warna kulit yang bervariasi. Pemeliharaan axolotl masih menjadi masalah utama, karena dapat menurunkan kesejahteraan hidup axolotl apabila informasi terbatas bagi pemelihara. Kesejahteraan hidup dipengaruhi oleh kondisi hewan dan kondisi lingkungan. Penelitian bertujuan mempelajari perilaku harian axolotl berdasarkan warna kulit, jumlah individu di akuarium, dan periode waktu. Pemeliharaan axolotl dilakukan di akuarium dengan suhu 22,3–23,0 °C serta pencahayaan (12/12 jam). Objek penelitian terdiri dari axolotl dengan warna kulit merah muda (leucistic), kuning (golden), dan kecoklatan berbintik hitam (marble). Observasi perilaku harian axolotl menggunakan metode focal animal sampling dengan total 264 jam pengamatan. Perilaku harian yang diamati meliputi sosial, agonistik, dan lokomosi. Data dianalisis menggunakan uji ANOVA. Hasil penelitian menunjukkan interaksi antara warna kulit, jumlah individu, dan periode waktu tidak memengaruhi perilaku harian axolotl. Masingmasing faktor periode waktu dan jumlah individu mempengaruhi perilaku harian axolotl. Faktor warna kulit hanya memengaruhi perilaku sosial. Axolotl golden paling banyak melakukan aktivitas sosial. Axolotl lebih banyak beraktivitas pada siang hari daripada malam hari. Populasi tiga individu di akuarium meningkatkan perilaku sosial dan agonistik, namun menurunkan lokomosi, Ambystoma mexicanum or axolotl is an exotic type of salamander from Mexico. Axolotl has the potential as an exotic animal because of its external gills and varied skin color. Axolotl maintenance is still a major problem, which could reduce the welfare if the information is limited for keepers. The animal and environmental conditions influence welfare. The research aims to study the daily behaviour of axolotls based on skin color, number of individuals, and time period. Axolotl was maintained in an aquarium with temperature (22.3–23.0 °C) and lighting (12/12 hours). The objects consisted of axolotls in pink (leucistic), yellow (golden) and brownish skin with black spots (marble). Daily behaviour were observed by focal animal sampling (total of 264 hours). Daily behaviours included social, agonistic, and locomotion. Data were analyzed with an ANOVA test. The results showed that interaction between skin color, number of individuals and time period didn’t affect the daily behaviour of axolotls. The time period and the number of individuals influenced daily behaviour. The skin color only influenced social behaviour. Golden axolotl carried the most social activities. Axolotls were more active during the day than at night. Populations of three individuals in an aquarium increased social and agonistic, but decreased locomotion.
Keyword: aggressiveness, external gills, leucistic, solitary