Judul: Perbandingan kinerja beberapa ukuran kesamaan pada temu kembali informasi dokumen xml
Abstrak: Penggunaan XML sebagai media penyimpanan dan format pertukaran data semakin meluas seiring dengan meningkatkan penggunaan internet, sehingga dibutuhkan suatu metode yang dapat mengeksplorasi data dalam koleksi dokumen XML secara efisien dan efektif. Beberapa penelitian sudah dilakukan terkait denagn pengembangan metode temu kembali pada dokumen XML, salah satunya adalah pendekatan kueri dengan menggunaakn XML fragments yang dikembangkan oleh Carmel al. (2002). metode XML fragments ini lebih bersifat temu kembali informasi (information retrieval) daripada bahasa kueri XML yang cenderung bersifat temu kembali data (data retrieval).
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Judul: XML retrieval untuk dokumen Bahasa Indonesia
Abstrak: XML (eXtensible Markup Language) retrieval is the content based retrieval of documents structured with XML and aims to implement focused retrieval strategies aiming at returning document components, which is XML elements instead of whole documents in response to a user query. Query languages for XML retrieval can be classified into content only (CO) and content and structure (CAS) query languages. Content only queries usually used for information retrieval where user does not know structure of a document but can get a specific answer from the query. Whereas, for content and structure queries used for XML retrieval systems which aims to answering user query on retrieve specific part of a document from content and structure XML documents. In this research queries are use content and structure (CAS) character with XML query additional fragments tagging of documents structured with XML. The purpose of this reasearch is to implement XML retrieval for document in Bahasa Indonesia using XML query additional fragments tagging with SIMNOMERGE similarity. The testing used 2 documents i.e. agricultural document and medicinal plants document. For the testing agricultural documents used 30 queries and 1000 documents. Whereas for medicinal plants documents used 13 queries and 93 documents. The testing result showed that the perfomance of information search engine is better when we use the medicinal plants documents than agricultural document. However, the performance of search engine with XML query additional fragment tagging with content and disease in madicinal plants document gave good result with around 0.8589 average precision and for XML query additional fragment tagging with text in agricultural document gave result with around 0.6156 average precision
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Judul: Detoxification of Cassava’s Acid Hydrolyzate by Activated Carbon Method for Bioethanol Production
Abstrak: Cassava is one of natural resources for carbohydrate that also available for bioethanol production. Starch and fibers hydrolysis maybe conducted on acid condition. The restriction in acid hydrolysis is 5-hydroxymethyl furfural (HMF) and furfural formation, which inhibit yeast fermentation. This study applied two stages of detoxification, which are overliming and activated carbon adsorption methods for lowering HMF and furfural concentrations. In order to obtain tolerable amount in sugar solution, detoxification by activated carbon adsorption was done by concentration of 1%, 2.5%, 5% and 10% and duration of contact are 30 45 and 60 minutes. The results showed that overliming method decreased HMF and furfural concentrations 34.38% and 60.81%, respectively. Overliming followed by 5% activated carbon adsorption for 30 minutes produced the best sugar solution which has a lower HMF and furfural concentrations by 72.03% and 89.11%, respectively. Adsorption constants of HMF and furfural by 5% activated carbon were 0.044 g/min and 3,7 x 10-5 g/min, respectively. The concentration of ethanol produced was 5.00% (b/v) or 63.22% higher than obtained from detoxification by neutralization (NH4OH) which produced ethanol only 3.06%.
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