Judul: Pengaruh diameter pelet dan lama penyimpanan terhadap kualitas fisik pelet daun legum Indigofera sp.
Abstrak: The experiment investigated the effect of different pellet diameter and time of storage on physical properties of pelleted Indigofera-leaves. This study consisted of two experiment; the first experiment was investigation of the die size (die 3, 5 and 8 mm) effects on physical properties using a Completely Randomized Design (CRD) with 3. The second experiment was the effect of storage quality on physical quality of pellets of the Indigofera-leaves. A factorial Completely Randomized Design (CRD) was applied with 3 replications, the first factor was die diameter consisting of 3, 5 and 8 mm and the second factor was the storage time (0, 7, 15, 30 and 60 days). The Observed physical properties of the tested pellets were water content, specific gravity, bulk density, compacted bulk density, respone of angle and pellet durability index (PDI), water activity and organoleptic test. The result of this experiment indicates that specific gravity, bulk density, and compacted bulk density of pellet higher than Indigofera leaves powder so that is more efficient for conveying and storing. The diameter difference of pellet did not have much influence on physical pellet quality which can‟t be broken easily. Leaves pellet of Indigofera sp. stored up to sixty days showed the result constantly so pellet can be stored in a long time.
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Judul: Pengaruh Diameter Pelet dan Lama Penyimpanan Terhadap Kualitas Fisik Pelet Daun Legum Indigofera sp.
Abstrak: The experiment investigated the effect of different pellet diameter and time of storage on physical properties of pelleted Indigofera-leaves. This study consisted of two experiment; the first experiment was investigation of the die size (die 3, 5 and 8 mm) effects on physical properties using a Completely Randomized Design (CRD) with 3. The second experiment was the effect of storage quality on physical quality of pellets of the Indigofera-leaves. A factorial Completely Randomized Design (CRD) was applied with 3 replications, the first factor was die diameter consisting of 3, 5 and 8 mm and the second factor was the storage time (0, 7, 15, 30 and 60 days). The Observed physical properties of the tested pellets were water content, specific gravity, bulk density, compacted bulk density, respone of angle and pellet durability index (PDI), water activity and organoleptic test. The result of this experiment indicates that specific gravity, bulk density, and compacted bulk density of pellet higher than Indigofera leaves powder so that is more efficient for conveying and storing. The diameter difference of pellet did not have much influence on physical pellet quality which can‟t be broken easily. Leaves pellet of Indigofera sp. stored up to sixty days showed the result constantly so pellet can be stored in a long time.
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Judul: Sistem Pengklasifikasian Entitas pada Pesan Twitter Menggunakan Ekspresi Regular dan Naïve Bayes
Abstrak: The widespread use of social networks like Twitter encourages some institutions to find out the entities that are discussed and the sentiment toward the entities. This research aims to build a system that can extract entities in tweets and classify the sentiment from the tweets. Entity extraction process is done using regular expressions. Writing regular expressions can capture the diverse entities. Sentiment classification is performed using naïve Bayes classification with Multinomial and Bernoulli models. Sentiment in this research consists of three classes, namely positive, negative, and neutral. Before entering the classification, tweets are normalized by replacing the non-standard words with the standard ones. The test results show that regular expression is quite effective for the entity extraction process. As for the results of the classification, naïve Bayes method produces high accuracy (96.75% for Multinomial and 96.33% for Bernoulli). However, the accuracy obtained depends on the neutral class which amounts to 97.88% for Multinomial and 99.95% for Bernoulli, while the positive class are 85.66% and 33.13% and negative class are 33.67% and 0%.
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