Judul: Performance of Earthworms (Lumbricus rubellus) Against the Addition of Banana Midribs to Cow Manure and Goat Manure Media
Abstrak: Tanaman pisang adalah tanaman tropis yang dapat hidup di daerah dataran tinggi maupun di daerah dataran rendah. Hampir semua bagian tanaman pisang bisa dimanfaatkan. Pelepah pisang banyak menumpuk menjadi limbah. Media yang cocok untuk budidaya cacing tanah adalah kotoran ternak diantaranya kotoran sapi dan kotoran kambing. Penelitian ini bertujuan untuk menganalisis pengaruh media kotoran sapi dan kotoran kambing dengan penambahan pelepah pisang terhadap performa cacing Lumbricus rubellus berupa bobot badan cacing, panjang badan cacing, jumlah kokon, bobot total cacing, produksi vermikompos, serta suhu, kelembapan, dan pH media. Penelitian ini menggunakan rancangan acak lengkap dengan tiga ulangan. Penelitian ini juga menggunakan uji Tukey sebagai uji lanjutan. Hasil penelitian ini menunjukkan bahwa perlakuan berpengaruh nyata (P<0,05) terhadap performa cacing tanah dan tidak berpengaruh nyata (P>0,05) terhadap suhu media antar kotak perlakuan. Perlakuan dengan hasil terbaik pada penelitian ini adalah kelompok media kotoran sapi dan taraf perlakuan 30% pelepah pisang., Banana plants are tropical plants that can live in highland areas as well as in lowland areas. Almost all parts of the banana plant can be used. Banana fronds accumulate a lot of waste. Suitable media for cultivating earthworms is livestock manure including cow manure and goat manure. This study aims to analyze the effect of cow dung and goat dung media with the addition of banana stems on the performance of Lumbricus rubellus worms in the form of worm body weight, worm body length, number of cocoons, the total weight of worms, vermicompost production, as well as temperature, humidity, and pH of the media. This study used a completely randomized design with three replications. This study also uses the Tukey test as a follow-up test. The results of this study showed that the treatment had a significant effect (P<0.05) on the performance of earthworms and had no significant effect (P>0.05) on the temperature of the media between the treatment boxes. The treatment with the best results in this study was the cow dung media group and the treatment level was 30% banana midrib.
Keyword: banana midrib, earthworm, livestock manure, performance

Judul: Performa Cacing Tanah (Lumbricus rubellus) pada Media Kotoran Sapi dengan Penambahan Tepung Kulit Kakao
Abstrak: Earthworms are one of the decomposer organisms, decomposition by hworms can be 3-5 times faster than microbes. Earthworm media from cow ng can be added to other wastes that have been fermented or decomposed. Cow ng and cocoa shell waste can be used as a medium for growing earthworms. s study aims to analyze the performance of worms (Lumbricus rubellus) on le manure with the addition of cocoa shell as a living medium with different els. The design used in this study was a completely randomized design (CRD) h 4 (four) treatments and 1 (one) control, each of which was repeated 3 (three) es and analyzed by Tukey's follow-up test. The rearing medium with the ition of cocoa shell flour had an effect (P<0.05) on improving the performance earthworms (Lumbricus rubellus). The addition of cocoa shell powder to cow ng media is up to 15% better than other treatments because it can improve the formance of earthworms (Lumbricus rubellus) including the total worm weight 111.67 grams, cocoon production of 134.00 grains and an average reduced dia of 569.33 grams.
Keyword: cattle manure, cocoa shell, earthworm, performance

Judul: Penerapan teknik watermarking untuk penandaan hak cipta pada peta vektor dengan format DXF
Abstrak: Drawing Interchange Format (DXF) is one of the general file in the field of the vector image commonly used for making maps. The DXF format is a tagged data representation of all the information contained in an AutoCAD drawing (DWG) file. Tagged data means that each data element in the watermark is preceded by an integer number called the group code. The study was carried out because there is still no tools of labeling the copyright on digital mapping using DXF file. This study aims to generate an application for copyright labeling on vector map with DXF format that can be applied to any types of spatial objects in the map. The technique used is changing the code inside the vector image. The insertion of the watermark is done by utilizing ENTITIES section by multiplying objects for sets of binary values. The results showed that the image after the watermarking insertion process is the same as the original vector image. Embedded watermark is resistant to rotation and scaling, however it has the possibility of one-third to be broken in the attack on specific object. This study has successfully implemented watermarking technique for copyright labeling on the vector map with DXF format.
Keyword: Drawing Interchange Format, Robust Watermark, Tagged Data, Vector Image, Watermarking